Where to call emergency service Call masters at home Nabat Rostov Bataysk. Automatics unit for pumps Automation unit Djilex goes into defense

/ Automation unit for pump

We offer to sell modern automation blocks for pumps manufactured by Djilex. Before buying an automatic device, we suggest familiarize yourself with its characteristics.

The automation unit (automatic device) allows you to automate the operation of the electric pump, start it with a decrease in pressure (when the crane is opened) and stop when the water flow is stopped in the water supply system (when the crane is closed). In addition, the automation unit ensures the protection of the pump from it without water ("dry stroke").

The automation unit is designed for pumping pure water that does not contain solid particles. In the presence of solid particles, you need to install the filter at the inlet in the automation unit. The presence of a pressure gauge provides visual pressure control in the water supply system.

Operating principle

The automation unit starts the electric pump for 20-25 seconds after connecting to the supply network. Subsequent launches of the electric pump occur when the starting pressure is reached, under the influence of the opening of the crane. Unlike systems with a relay pressure-tank, the condition of stopping the electric pump is not dictated by the achievement of a certain pressure in the system, and is determined by the reduction of the flow to the minimum values. Once the automation unit determines this condition, it stops the electric pump with a delay in the range of 7 + 15 seconds, the timing logic is aimed at reducing the frequency of the electric pump in low flow conditions.

The automation unit can be used in conjunction with

Installation

1. The pressure gauge can be mounted on one of the two sides of the automation unit, with the help of a ring seal and two fastening screws. By selecting the convenient location of the pressure gauge, from the opposite side, stop the hole using a screw without using any seal. Install the automation block strictly in a vertical position at any point located between the pump feed and the first point of the water intake (Crane) so that the inlet (outer thread 1 ") connects to the direction of water flow from the pump, and the side outlet (outer thread 1 ") corresponded to the direction of flow in the pipeline. Make sure in the complete tightness of the hydraulic connections. In the case of using an electric pump with a maximum pressure above 10 bar, you must install the pressure reducer at the inlet in the automation unit.

2. For electrical connections, follow the circuit shown on the casing of the circuit board. When using the automatic unit with three-phase or single-phase electric pumps, which are switched over 10 and use an electromagnetic starter. It is necessary to use an electrical cable with thermal resistance not lower than 99 ° C.

3. The starting trigger pressure is adjusted by 1.5 atm., Which is the best value for most cases of use. This value can be changed using an adjusting screw located on the upper part of the automation unit with the "+" and "-" marking.

Starting the automatic block

ATTENTION: In case the level of water flowing below is below which the pump is installed, it is mandatory to use a bottom feed valve on the suction tube.

1. Before starting, it is completely filled with a suction pipe and an electric pump and start the launch, thereby giving the network automation unit "Network". After stopping the electronasus, open the crane located at the top point.

2. The setting is correct if the electric pump works continuously, and on the outlet of the crane, the regular flow of water. In the absence of water flow, you can extend the operation of the electric pump while the "Reset" button is kept, for a period that exceeds the time time of the automation unit. If there is no stream in this case, it is necessary to turn off the power supply of the electric pump, and repeat the procedure, starting in paragraph 1.

Dry Code Protection

The red "Protection" indicator lights up with the shutdown of the electric pump, signaling the danger of dry stroke. After you make sure that the suction highway is filled with water, run the electric pump by pressing the "Reset" button.

Specifications

Voltage - 230-240 B 50/60 Hz
Maximum switched current - 10 (6) A
Starting pressure - 1.5 + 3.5 atm.
Maximum flow of water - 80 l / min
The maximum allowable pressure is 10 atm.
Maximum water temperature - 60 ° С
Connecting Sizes - 1 "
Degree of protection - 1p65

ATTENTION:
The check valve located between the electric pump and the automatic unit, and also after the automatic unit, it may cause incorrect operation of the automation unit itself.
Adjusting starting pressure should be carried out by competent personnel in compliance with all safety standards.
This operation is aimed at changing the starting pressure of the electric pump.
The disabling pressure of the automation unit is not adjustable, and corresponds to the maximum pressure of the electric pump created.

Read 5 min.

Dzhelex automation - multifunctional, easy to install, acceptable at cost. It can work with both native pumps and pumps from other manufacturers to automate water supply.

The company offers reliable and modern versions of automation for a pump that have a long life and good characteristics. We will understand more.

Total pump automation

Run automation as follows:

Immediately before turning on the device, I fully fill the pump inlet pipe and run it (the "Network" LED should be lighting up). This manipulation will turn on the automation unit. As soon as the pump starts to work and, after some time stop, you need to open the output valve, which is at the highest point.
If the pump is running all the time when the crane is open, and ensures a continuous flow of water - the installation is considered correct. The lack of water flow says that you need to hold the "Restart" button and keep the automatic system operation time. If, with such a manipulation, the flow is still missing, you need to repeat the launch.

Idle protection

When the "Protection" LED lights up on the automation unit, and the pump itself is turned off, it can talk about the danger of idle system. So it works as a preservation.

Check all the systems again. If everything is in order - release water from the incoming system, and pour it again. Then click the "Restart" button.

Optimal automation characteristics for pumps

Vibrating or any other type of pump can be additionally completed with automation systems. But, they have different parameters, properties, etc. What should be purchased?

Technical indicators (optimal):

Operating voltage \u003d 210-250 V;
Frequency \u003d 40/70 Hz;
Minimum operating pressure \u003d 1-4 atm.;
Load current \u003d 6-10 A;
Water flow rate \u003d 70-100 l / min;
The upper pressure threshold \u003d 15 atm.;
Limiting water temperature \u003d 75 degrees;
The diameter of the input pipe \u003d 1 inch;
Degree of protection \u003d 1Р65.

What you need to know?

Important! The valve on the segment of the pipe between the automatic / pumping systems, and the valve that runs on the output tube of the automatic block is the perpetrators of the equipment.

The minimum operating pressure of the equipment cannot be changed independently. This should be done by electrician, who have experience, are familiar with the regulatory documentation and comply with safety standards.

Limit working pressure is not regulated by automation. It corresponds to the indicator of the electric pump.

We offer to sell modern automation blocks for pumps manufactured by Djilex. Before buying an automatic device, we suggest familiarize yourself with its characteristics.

Operating principle

The automation unit can be used in conjunction with the PDM-5 pressure relay

Installation

Starting the automatic block

ATTENTION: In case the level of water flowing below is below which the pump is installed, it is mandatory to use a bottom feed valve on the suction tube.

Dry Code Protection

www.agrovodcom.ru.

1 Total pump automation

Block automation Djilex crab - a device that automates the operation of the electric pump. It turns on the system while reducing the pressure (the crane opens), and turns it off when stopping the flow (the crane is closed). Automation also lies in the protection of the pumping station at its "simple" - work without water, on the "dry go."

The automatic jilex unit is applied only to clean water, which does not contain solid elements. If the latter are available, then for the automation unit, you need to separately purchase a filter element. And if you mount the pressure gauge, the pressure control can be carried out visually.
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1.1 How does it work?

The automatic Djilex unit 9001 turns on 30 seconds after connecting to the power grid. Then it turns off and goes into sleep mode. Further inclusions of the device occur when the pressure changes - the opening and closing of the valve.

As soon as the level of pressure drops to the minimum permissible standard, the automatic control element will turn off the pump. So the safety and efficiency of the device is significantly extended.

After lowering the pressure until the minimum allowable level, the system will not turn off immediately, but after several tens of seconds (as a rule, from five to twenty, depending on the specific model). The delay in turning off the pumps is needed in order to, with a weak pressure of water, it was not systematically turned off. This allows you to extend the service life of the system.
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1.2 Jelex Automation Block: We consider inside (video)

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1.3 Installation

To automate the control of the pump, you need to purchase appropriate additional components for it (depending on your needs), and connect them in the following sequence:

The pressure gauge is attached to the automatic unit on the side with the help of fastening elements that are included. Which side is to fix - "case at discretion." But it is important to carefully fasten the device on the panel without using sealing elements.
The automation unit is mounted exclusively in a vertical position. It can also be fixed in any convenient place, but on the segment between the crane (the first water intake) and the pump feed system. Moreover, it is necessary that the outer inlet of the system is adjacent to the water outlet channel from the pump, and the side outlet was adjacent to the water stream in the pipe.
All connection must be dense fixed. You should make sure of their tightness and double-check the correct connection of all connecting elements.
If automatic equipment is used for electrical pumping systems with a maximum pressure threshold from 15-bar, the pressure reducer is mounted on the automation input.
The device (or circuit board) case contains an electrical automation circuit. Strictly follow it when connected! If one or three-phase pump with a working current of more than 10 amps is used, the automation is mandatory connected via an electromagnetic starter. Cable used to connect the device must be resistant to elevated temperatures (above 100 degrees) and non-combustible.

Automatic adjustment and triggering of systems (the pressure is minimum) is designed for pressure in 2 atm. This option is the most common and optimal for most systems. But this parameter can be easily adjusted if necessary. This is done by rotating the crane, which is located on top of the automatic system, and has a plus markers and minus.

1.4 Starting an automatic system

Important! When the level of the incoming water is below the level on which the pump system is mounted, it is necessary to mount the reverse bottom valve on the input pipe.

Run automation as follows:

Immediately before turning on the device, I fully fill the pump inlet pipe and run it (the "Network" LED should be lighting up). This manipulation will turn on the automation unit. As soon as the pump starts to work and, after some time stop, you need to open the output valve, which is at the highest point.
If the pump is running all the time when the crane is open, and ensures a continuous flow of water - the installation is considered correct. The lack of water flow says that you need to hold the "Restart" button and keep the automatic system operation time. If, with such a manipulation, the flow is still missing, you need to repeat the launch.

1.5 Hope Stroke Protection

When the "Protection" LED lights up on the automation unit, and the pump itself is turned off, it can talk about the danger of idle system. So it works as a preservation.

Check all the systems again. If everything is in order - release water from the incoming system, and pour it again. Then click the "Restart" button.
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2 Optimal characteristics of automation for pumps

Vibrating or any other type of pump can be additionally completed with automation systems. But, they have different parameters, properties, etc. What should be purchased?

Technical indicators (optimal):

Operating voltage \u003d 210-250 V;
Frequency \u003d 40/70 Hz;
Minimum operating pressure \u003d 1-4 atm.;
Load current \u003d 6-10 A;
Water flow rate \u003d 70-100 l / min;
The upper pressure threshold \u003d 15 atm.;
Limiting water temperature \u003d 75 degrees;
The diameter of the input pipe \u003d 1 inch;
Degree of protection \u003d 1Р65.

2.1 What do you need to know?

Important! The valve on the segment of the pipe between the automatic / pumping systems, and the valve that runs on the output tube of the automatic block is the perpetrators of the equipment.

The minimum operating pressure of the equipment cannot be changed independently. This should be done by electrician, who have experience, are familiar with the regulatory documentation and comply with safety standards.

Limit working pressure is not regulated by automation. It corresponds to the indicator of the electric pump.

nasosovnet.ru.

Principle of operation

Despite the fact that the relay regulates the pressure of water, its mechanisms provide electrical components. Under the pressure of water, two contacts are closed, so connecting to the power grid:

when the pressure is below the installed upper pressure limit, the relays are closed, the pump continues to swing water;
if the upper limit is exceeded, the contacts are blocked, the pump stops working.

The principle of operation is not complicated, but some difficulties are in consumers when the pressure relay is adjusted, the installation of the lower and upper limits is carried out.

Adjustment technique

Adjusting the pressure relay by manufacturers on factories is not always accurate or not suitable for local operating conditions. But the design is made so that each owner without any special problems adjusted the necessary parameters. In private houses, pumps at the water supply point in front of the hydroaccumulator should create pressure pressure not lower than 1.4 atmosphere. Otherwise, the adjustment does not make sense, the contacts will not close, and the pump will not turn on. At the point of connection, there must be a pressure gauge, according to its testimony, the pressure is judged:

Relay Connection Scheme to Expansion Baku

We connect the pressure switch to the reception point, how the instruction requires this, the hydroaccumulator is not connected, the plug is installed instead. The pump connects to the network - in this way the operation of the relay with the factory settings and tightness of the network to the relay is checked.
Fix the pressure gauge testimony (3 atmosphere).
Remove the housing cover with the relay.

Pressure limits adjustment screws under the case

Under the housing lid there are large and low nuts with springs, when rotating a large nut clockwise, a locking spring is compressed, the upper limit increases. The upper limit is reduced by the rotation of a large nut counterclockwise.

Adjust the bulk of the pump to turn off the pump, the optimal option is 2.5-3 atmosphere, take 2.8.

Check the pressure in the hydroaccumulator, it should be a separate pressure gauge, we will take it that it is 1.5 atm. Connect the expansion tank to the relay.

Open the faucet at the highest point of the water pipe, if the pressure is not enough, pumped the cycling pump in the expansion tank to the desired pressure.
Opening the water, just follow, with what the value of the relay pressure gauge will include a pump. Fix the lower limit testimony when the pump is turned on when the pressure drops. We will assume that this value will be 1 atmosphere.
2.8-1 - the difference in the lower and upper limits will be 1.8 atm., It is 0.3 atmosphere more pressure in the expansion tank.

The instruction manual determines that the lower limit pressure in the ideal case should be 0.2 atmospheres more than the pressure in the expansion tank. With this installation ratio, the amount of inclusions for the electric pump is optimal, which significantly extends the resource of the pump and relay. The difference can be adjusted with a small bolt with a spring or changing the pressure in the hydroaccumulator, pump or strip air. Properly installed PDM 5 Djilex pressure switch will make the pump mode more economical, reduce the consumption of electricity and will serve for a long time.

domelectrik.ru.

What functions does the device perform?

In private houses, where the water supply is not listed, the question of providing water drinking quality is solved 2 ways:

installation of the container or the device of the basin filled with bridal water;
drilling well to aquifer.

Water supply to the house is carried out using the pump required power. But the pressure of water during its operation is too large to connect the pump unit to the internal water supply networks directly. Therefore, the house is installed in the house with a membrane - a hydroaccumulator, and the required pressure on the network supports the pressure relay of the RDM 5. The device allows you to automate the process of supplying water in autonomous water supply systems.

Operating principle

The device consists of a brass housing with fittings for connecting to a plumbing network, spring valves and an electric relay. Outside the elements are closed with a plastic lid. The scheme of operation of the PDM 5 pressure relay is as follows:

The manufacturer configures the device to the lowest pressure limit of 1.4 bar, the highest - 2.8 bar. When the pressure in the hydroaccumulator is less than the lower limit, the contacts relays are closed, and the pump pumped water into the intermediate membrane tank.
When the pressure has grown to the upper limit (2.8 bar), the spring valve is triggered and the relay contacts the contacts. Water supply is stopped.
When a water-based in the house, the hydroaccumulator begins to be devastated, the pressure decreases, and when the lower threshold is 1.4 bar, the relays are reached again and the pump renews its work.

As a rule, the device RDM 5 is equipped with ready-made pumping stations consisting of a pump, a water battery tank and the actual control relay. The station is configured in factory conditions and is fully ready for operation, it remains only to connect it to the pipe and power grid. But finished products are not suitable for all for the following reasons:

the hydroaccumulator container is insufficient;
the head of the regular pump is small to ensure water supply to the height;
used the deep pump, descended into the well.

In the cases listed cases, the automatic water supply system will have to be assembled from individual elements, and the pressure switch is adjusted accordingly, having coordinated it with a battery tank. Before purchasing and connecting the device, it is recommended to study its specifications:

the pressure control range in the plumbing is from 1 to 4.6 bar;
the range of ambient temperatures - from 0 to +40 ° C;
minimum pressure drop - 1 bar;
supply voltage - 220 V;
the diameter of fittings - Dn 15, attachment - G ¼ ''.

If for some of the technical characteristics of the RDM 5 relay 5 you do not suit you, you will have to search another regulator. But practice shows that the parameters of this device satisfy the requirements of the overwhelming number of autonomous water supply systems.

How to adjust the device?

Adjusting the pressure relay is performed after installing the internal and external water supply network of the house and connecting to the electrical network.

The compounds of external and internal pipelines must be tested by testing so that the leakage emerging subsequently does not interfere with the control process. Due to the leaks of the joints, the pressure to the pump or after it will become spontaneously decline, which will affect the operation of the relay.

Before setting, determine the required pressure. To feed water in all points of water-based, located on different floors, it is necessary to provide the necessary pressure in the hydroaccumulator. The tank membrane efforts should be enough to push the entire volume of water to the height of the height and overcome all local resistance. At home, this pressure value is most often determined experimentally.

The calculation is made simply: 1 m loss of lifting is 10 m of the horizontal portion and corresponds to the pressure of 0.1 bar. The calculation of the most distant water supply branch is taken. Approximately identifying the necessary pressure, it is necessary to create such pressure from the aircraft-accumulator air chamber. To do this, remove the plastic cap from the spool (as a rule, it is in the end of the tank) and the ordinary automotive pump should be drunk the air chamber, controlling the pressure to the pressure gauge.

Without connecting the nozzle of the internal water supply network, check how the relay works together with the pump on the factory settings. At the same time check the tightness of the outer pipeline.
Remove the plastic relay cover that covers the adjusting screws.
A high screw is adjusted the upper limit (disconnection of the pump), small - pressure drop. Adjust the lower limit so that its value is 0.2 bar more than you downloaded to the hydroaccumulator.
To reach accurate values, you will have to set up several times, opening the faucet cranes and the intake of water from the battery. In this case, register the testimony of the pressure gauge when the pump is turned off and on and adjust them with tuning screws.

As a result of the settings, the difference between the lower and the upper limit should not be less than 1 bar. Practice shows that the optimal pressure drop is about 1.5 bar, then the pump will not be turned on too often. At the end of the adjustment, do not rush to put the lid into place, follow within 1 day after the system. Perhaps it will take a small adjustment.

pikucha.ru.

1 Features of the Company Control Block

The main element of automating the process of pumping the company is the automation unit of the jilex. Such a device is connected directly to the pumping machine and reacts to the pressure level in the system.

It consists of a jilex block from a plastic housing with a metal lid. Inside the housing is a spring, an electronic unit, a complied with a pressure relay and a movable mechanism, flushing contacts when the pressure is reduced. For external control of the operation of the device in the side surface of the unit, a pressure gauge is mounted.

The device is designed to work on the basis of a pumping station or another surface pump pumping clean water. Use with a minor content of abrasive impurities is also possible, but in this case the device is completed with an additional filter.
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1.1 Principle of action of the device

Djilex automation functions autonomously from the usual electrical network. After 30 seconds after installing and connecting the unit, it turns on and runs within a few seconds. Next, the device is turned off and activated only if the pressure in the line is changed.

When the valve at the water consumption point opens, the pipe pressure begins to quickly decline. In this case, the unit immediately turns on and when the minimum pressure indicator is reached, the electric pump activates. The device pumps water while the pressure is not aligned again (when the crane is closed). After the crane overlaps, the device works for another 5-20 seconds, continuing to pump water into the line. Such a measure is precaution, in case the pressure in the system falls below the norm and the device is not able to track the pressure level.
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1.2 Jelex Automation Block: We consider inside (video)

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2 Correct installation of the device

Dzhelex 9001 automatics is installed in the supply line included with additional equipment. Therefore, the important stage is the correct installation and configuration of all components. Installing the automation unit The presstructrol from the jilex is carried out in the following order:

First of all, if modification without measuring instruments is purchased, you should purchase a pressure gauge and install it on the sidebar. The mechanism is necessary to control and manag control.
The automatic apparatus itself is crashed into the pipeline of the water supply on the site between the water consumption point (tap) and the pumping device. A block is installed exclusively in a vertical position, a blue metal cover up. In this case, the inlet of the device (indicated in the instruction) must be located on the pump release. The output hole carries further into the supply line.
After the control apparatus is mounted in the line, it is necessary to thoroughly inspect all the joints and compounds for tightness. If the errors are found during installation, they should be sealing with sealant or connecting elements.
Connecting the block to the network is carried out strictly according to the scheme specified in the manual. In this case, if the device completes the pump with a current of more than 10 amps, the magnetic starter is additionally installed. The main requirement to the electrical cable used with the device is increased resistance to high temperatures.

If necessary, the supply line is complemented by filters for water purification and the receiver to align the pressure in the system.

After all the components are mounted in the highway, you need to check the device. For this, the pump inlet on the pipeline is filled with liquid and the pump is turned on. One of the indicators lights up on the unit. This suggests that there is a contact between the block and the pumping machine. For several tens of seconds, the device works and turns off.

After the device is turned off, you must open one of the cranes (if there is a multi-level, then preferably the uppermost). At the same time there are two options:

In the first case, water will go from the crane with a continuous, uninterrupted flow. The block turns on, and the pumping device works throughout the entire period of use of the crane. In this case, the installation of the device is made correctly.
If the water flow is not stable or is absent at all, you can try to restart the device with the "Restart" button. The button is pressed and maintained until the pump device does not work. If, in this case, nothing has changed, a thorough inspection of the device and the whole line is carried out, and if necessary, dismantling and adjustment.

3 Compatible Pump Supports

Djilex automation is a versatile device. With it, the operation of pumping devices from various manufacturers can be adjusted. Regarding the principle of operation, such a pressure leveling mechanism is installed on a vibration, centrifugal, vortex, auger pump.

The most efficiently appliance is complete with pumping devices that meet the following characteristics:

current power in the range of 6-10 A;
device performance up to 100 l / min;
voltage not higher than 250 V;
the maximum temperature limit of the pumped liquid is 75 degrees;
connecting to a pipe with a 1-inch cross section.

4 Other Variants of Jielex Automation

In addition to the automation unit, the company produces less popular automation options for pumping equipment. One of these options is the installation of the crab jilex. The device is responsible for stable pressure in the supply lifting, it starts and turning off the pump if necessary. In addition, the filter element clears the stream from solid inclusions.

Djilex crab consists of such components:

polymer hydrocratic;
tank receiver with a volume of 24 or 50 l, coated with anti-corrosion enamel;
electrical pressure relay;
filter with a replaceable cartridge that is responsible for cleaning the water flow from impurities;
pressure gauge;
two electrical cables;
special bracket for fixing the aggregate on the wall.

The device works on the basis of a standard electrical network by 220 V. Suitable for simultaneously connecting 2-3 points of water intake. The adjustable relay allows you to install before starting the pressure level, which will support the device. Like the previous type of devices, Crab 50 is a versatile device and is suitable for connecting any manufacturer on borehole pumps.
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4.1 RDM-5 Pressure Relay

A simpler version of automation of the pumping station is to install a special RDM-5 relay on it. The compact device is mounted in the highway and is connected to the pumping unit using an electrical cable. The wire is fixed to the contacts of the relay.

The principle of the device is as follows. The device reacts to the pressure level in the line. If the indicator below the set value is connected, the current is fed to the water intake point and the liquid fills the pipeline until the pressure is normalized. When the pressure level comes to normal (this indicator is also exhibited by the user) - Contacts disagree. Current supply to the well unit is interrupted and it turns off.

The minimum and maximum indicators in which the pumping device is triggered by the user. You can carry out their settings using two nuts that fix the degree of voltage of the spring. A larger nut when rotating counterclockwise exhibits the maximum pressure indicator, the nut is smaller when rotating allows you to adjust the difference between the maximum and minimum indicator.

RDM-5 is designed for use exclusively in water. The operating voltage for the apparatus is 220-230 V. The temperature of the pumped liquid is 0-40 degrees. The relay is fixed to the pipeline with a cross section. Mandatory condition when using RDM-5 is high-quality grounding.
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4.2 Float Switch Jieks

For drainage, fecal and surface pumps for water are the cheapest and practical way of automation is the float switch. In the field of use, such devices are divided into light and heavy. Light float are equipped with drainage models, heavy floats are installed at water supply stations and water pumps.

It consists of a construction of an electrical cable with a length of 3.5.8 or 10 m and a plastic float mechanism. Inside the float there are two contacts, switching lever and a ball changing the lever. In the number of wires, two and three-wire floats are highlighted.

In a variant with two wires, they are directly connected to the contacts of the float. When such a mechanism rises with water level to the designated level, the lever presses on the contacts, they climb and supply energy to the pump.

In models with three wires, it is maintained to include the point of the fence in the extreme top and in the extreme lower positions. To do this, one wire goes to one of the contacts, and two other wires depending on the position over the second contact.

The principle of operation of such a float mechanism is that the device automatically turns on the pump when the water level rises to the displayed indicator. In the case of a two-wire device, the float, on the contrary, opens the contacts and turns off the device when water falls below the norm.

byreniepro.ru.

Device and principle of automation for pump

There are different automotive equipment for pumps, among which there are dry stroke blocks, water pressure relays, electronic blocks, sensors, etc. As a rule, the electronics functions together with additional equipment (hydroaccumulator, float switch, etc.). In this case, adjusting the operation of the pumping group can be performed both by pressure and stream. An important component of the element is a pressure gauge that provides visual monitoring of water supply network parameters.

Today there are several generations of automation for pumps. The newest electronic devices are considered to be most effective thanks to high-tech equipment, advanced functional features and more subtle settings.

General principle of work:

when the pressure decreases, the unit independently starts the pump unit (in particular, this happens when the cranes is opened);
in the absence of water consumption, the electric pump is turned off (all cranes are closed);
automatic stopping of the pump group can occur in the event that the fluid flow is not enough (protection against "dry stroke").

www.jeelex.ru.

Device and principle of water pressure relay

Constructively, the relay is performed as a compact block with maximum and minimum pressure springs, the tension of which is controlled by nuts. The membrane associated with springs responds to a change in pressure force. When the minimum value of the spring weakens, with a maximum level, it is shrinking stronger. The impact on the spring causes opening (closure) of the relay contacts, turning off or including the pump.

The presence of a relay in the water supply system allows for continuous pressure in the system and the necessary water pressure. The pump is controlled automatically. Properly exhibited minimum and maximum pressure levels provide its periodic shutdown, which contributes to a significant increase in the time of the trouble-free service.

The sequence of the pump station running the relay is as follows:

Pump pumps water into the tank.
Water pressure is constantly increasing that you can track the pressure gauge.
When the installed limit top pressure is reached, the relay is triggered and disables the pump.
As the water is spent in the tank, pressure is reduced. When it reaches the lower level, the pump will again turn on and the cycle will repeat.

The main parameters of the relay work:

Lower pressure (inclusion level). Relay contacts, including the pump, closes, and water enters the tank.
Top pressure (shutdown level). Relay contacts open, the pump is turned off.
The pressure range is the difference between the two previous indicators.
The value of the maximum allowable shutdown pressure.

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Setting up pressure relay

In the process of assembling the pumping station, special attention is paid to the pressure relay setting. From how correctly its limit levels will be exhibited, the ease of operation of the water supply system, as well as the timing of the trouble-free service of all components of the device, depends.

At the first stage, it is necessary to check the pressure that was created in the tank in the manufacture of a pumping station. Usually, in the factory conditions, the level of inclusion in 1.5 atmosphere is set, and the shutdown is 2.5 atmosphere. Check this with an empty tank and disconnected from the power supply of the pumping station. It is recommended to check the automotive mechanical pressure gauge. It is placed in a metal case, so measurements are obtained more accurate than using electronic or plastic pressure gauges. Their testimony may affect both the air temperature and the charge level of the battery. It is desirable that the limit of the gauge scale is as small as possible. Because on the scale, for example, in 50 atmospheres it will very difficult to accurately measure one atmosphere.

To check the pressure in the tank, you need to unscrew the cap, closing the spool, connect the pressure gauge and remove the reading by its scale. Air pressure should continue to periodically check, for example, once a month. Water should be completely removed from the tank, turning off the pump and opening all the cranes.

Another option is possible - carefully monitor the pump disconnection. If it has increased, it will mean a decrease in air pressure in the tank. The smaller the air pressure is, the greater the supply of water can be created. However, the pressure variation from the fully filled to almost devastated tank is obtained large, and all this will depend on the consumer preferences.

By selecting the desired mode of operation, you need to install it by hiding excess air for that, or drop additional. It should be borne in mind that one should not reduce the pressure to a value of less than one atmosphere, as well as to join it. Because of the small amount of air, the rubber container filled with water inside the tank will touch its walls and sway. And the surplus will not give the opportunity to pump a lot of water, because a significant part of the tank volume will occupy air.

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Setting the pressure on and off pressure levels

In pumping stations that are supplied in the assembled form, the pressure switch is pre-configured by the optimal option. But when it is installed from various elements on site, the relay setting must be carried out. This is due to the need to ensure the effective relationship of the relay settings with the tank volume and pump pressure. In addition, it is necessary to change the initial pressure relay setting. The procedure should be as follows:

In practice, the power of pumps is chosen such that does not allow pumping the tank to the extreme limit. Usually, the disconnection pressure is set to a pair of atmospheres above the inclusion threshold.

The installation of limit pressure levels is allowed, which differ from the recommended values. In this way, you can specify your own version of the mode of operation of the pumping station. Moreover, when setting the pressure difference with a small nut, it is necessary to proceed from the fact that the bottom level is installed by a large nut. You can only set the top level within the limits of which the system is calculated. In addition, rubber hoses and other plumbers also withstand pressure, not higher than the estimated. All this must be considered when installing the pumping station. In addition, excessive water pressure from the crane is often completely unnecessary and uncomfortable.

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Adjusting the pressure relay

Adjusting the pressure relay is practiced in cases where it is necessary to set up the levels of the upper and lower pressures in the specified values. For example, you need to set up the upper pressure of 3 atmospheres, the lower is 1.7 atmosphere. The process of adjustment is as follows:

Turn on the pump and pump water to the tank to the pressure value on the pressure gauge 3 atmosphere.
Disable pump.
Open the relay cover and slowly rotate a small nut until the relay works. The rotation of the nut clockwise means an increase in pressure in the opposite direction - a decrease. The upper level is set - 3 atmosphere.
Open a tap and drain the water from the tank to the pressure value on the pressure gauge 1.7 atmosphere.
Close the tap.
Open the relay lid and slowly rotate a large nut before the contacts are triggered. The lower level is set - 1.7 atmosphere. It must be somewhat larger than air pressure in the tank.

If high pressure is specified for shutdown and low - for inclusion, the tank is filled with plenty of water, and there is no need to turn on the pump often. Disadvantages occur only because of the large pressure drop when the tank is complete or almost empty. In other cases, when the pressure range is small, and the pump often has to pump, water pressure in the system is uniform and sufficiently comfortable.

In the next article, you will learn about the connection of the hydroaccumulator to the water supply system - the most common connection schemes.

will extend the service life of the pump;

General principle of work:

When choosing automation for the pump, consider the following specifications:

connecting dimensions in inches;
power consumption;
network voltage;
degree of protection;
the greatest flow of water flow (liter per minute);
maximum powerful pressure;
temperature range of the work environment.

Specifications Description

Without pumping installations, no autonomous water supply network is required. They create the required pressure, providing fluid supply to water separation points. However, the use of water will become really convenient only if there are automation for the pump. This functional block will display the quality of water management to a new level. As a result, the work of the equipment will be optimized.

High-tech and functional automation:

will extend the service life of the pump;
will start and turn off depending on the pressure of the fluid in the pipeline;
protects the pumping group from "dry running";
minimizes the number of emergencies;
will provide automatic maintenance of the necessary technological parameters;
enhance the system management comfort (the user will no longer have to constantly monitor the equipment).

Device and principle of automation for pump

General principle of work:

when the pressure decreases, the unit independently starts the pump unit (in particular, this happens when the cranes is opened);
in the absence of water consumption, the electric pump is turned off (all cranes are closed);
automatic stopping of the pump group can occur in the event that the fluid flow is not enough (protection against "dry stroke").

Specificity of selection and installation of automation for the pump

Installation of the automation unit is performed in a vertical position anywhere located between the pump and the first point of the waterproof (tap). In this case, the outlet is connected to the pipeline, and the inlet nozzle is connected to the outlet metoral pump.

all hydraulic connections must be sealed, the pressure gauge fastener is carried out through the sealing ring;
if a pump with a working pressure is used, exceeding the maximum valid values, the pressure reduction gearbox is installed at the input into the unit;
with a high strength of the current, the magnetic starter is additionally mounted;
for electrical connection, a circuit is activated on the casing of the circuit board;
before the first launch, the suction tube and the electric pump are filled with water, and only then there is an inclusion in the network;
strictly follow the security requirements provided by the manufacturer - this will ensure the stable operation of the system, protects against injuries and emergencies, will retain the right to warranty service.

When choosing automation for the pump, consider the following specifications.