The content of non-ferrous metals in the pumping unit etsv. Rules for the operation of pumps ecv. Favorable offers of the company "Voda-People"

ETsV pumps are deep vertical centrifugal pumps, which are used to supply water from a well or well. Most often they are placed at water intake stations and other enterprises where it is necessary to ensure the rise of water from deep mines. It should be noted that such pumps are also often used in oil and gas production.

Deep well vertical pumps are multistage and have a vertical shaft, which operates with a backwater, the size of which is one meter. The stages of such pumps are of semi-axial and radial type, and the bearings and electric motors are cooled and lubricated with moisture. The ECV pump works only in a vertical position.

ECV pumps are extremely popular in our country and are often used for pumping units in industrial wells. With their help, it is possible to provide water supply to entire villages and horticultural societies.

Rules and procedure for installing an ECV pump

ETsV pumps are placed on wells, the diameter of which is from one hundred to five hundred millimeters. The water supply of such a device can be from 6 m3 / h to 12000 m3 / h.

As a rule, during installation, a significant depth of the well is taken into account, as well as a large pump head, and pipes made of steel are taken for drainage, interconnected by threads or using flange connections. In this case, the safety cable is not used.

Installation, replacement and installation borehole vertical ECV pump can be produced using a truck crane. Before starting the installation of the pump, it should be carefully and carefully inspected so that there are no plugs, stickers or other things on it. After that, the pump cable is connected to the power supply cable using heat shrink sleeves. Next, the pump is connected to a metal drainage pipe, the second end of which is hooked with a truck crane. The height of the crane boom determines the length of the drainage pipe. The pump and pipe are lifted by a crane, after which they are placed in the wellhead with installed device for fixing a column of pipes for water drainage. After the pump is placed in the well, top part the pipe is attached to the wellhead and braced with a truck crane, which then lifts the second pipe, which leads to the well and connects to the first. The first pipe is removed from fixation and two pipes are placed inside the well. After that, the upper part of the second pipe is attached to the wellhead and another pipe is connected to it, and so on. The pump is lowered until it reaches the required depth. While the pump is lowering, with the help of plastic clamps, the cable is attached to the drainage pipes.

Further, the control of the ECV pump is carried out thanks to the Control and Protection Station, which protects the equipment in case of electricity overload, if the pump is turned off due to a phase failure, after emergency shutdown and others.

Starting the ECV pump

After the pump is installed inside the well, commissioning begins. Electrical engine after immersion, filled with water and the first switch on this machine performed when the valve is open. The voltage at the system terminals must be at least 360 V.

When starting systems, it is important to correctly determine the direction of rotation. After the device is turned on, for some time they look at what the supply and pressure of water will be. After that, they turn it off, change the location of any two phases and turn it on again, monitor the pressure and water quality.

If the direction is chosen correctly, then the pressure will be strong. Next, the pump is put into operation, and the water pressure is regulated using a special valve. If mechanical impurities appear in the water supplied by the pump, then the degree of supply is reduced. If this does not help, then the device is turned off and they look for the cause of the appearance of impurities, eliminate it and turn on the unit again.

The pump must be selected taking into account the fact that the flow rate of the well must be at least a quarter more than the nominal flow of the apparatus. At the same time, the maximum depth for the pump should not be greater than the nominal water lifting height. In order for the motor to cool properly, lower part the apparatus is placed above the well filter zone per meter.

Dismantling and replacing the pump

Replacement and dismantling of the pump can be carried out for a variety of reasons:

As a rule, the pump worked for quite a long time without failures, but its performance began to fail and deteriorate over time. Gradually, he stops pumping water altogether. If this happens, then the device needs to ring and if the motor winding produces a short circuit or an open circuit, then the pump is taken out of the well, the cause of the breakdown is found out and eliminated.
Silting or the appearance of sand in the well. In this case, the pump must be dismantled and cleaned, as well as the well itself must be cleaned.
Due to the wear of the impellers, the water supply part of the pump may not function.
If special protection is not supplied to the pump, then the device may break down due to a voltage drop. The relay and accumulator output fail and the pump turns off and on frequently. As a result, the motor quickly breaks down.
If the pump was selected and installed from the very beginning incorrectly in relation to the parameters of the well, then it quickly becomes unusable. The dynamic moisture level must always be above the part of the pump where its suction cavity is located.
If errors were made during operation, the pump will also need to be dismantled for repair or troubleshooting.

When replacing or dismantling, the pump is lowered into the well in a tube made of metal or plastic. Safety cables or special equipment in the form of cranes can also be used. The pump is centered inside the well, after which it is fixed.

For the correct and efficient replacement of the pump in the well, you need to choose the right device, put it at the calculated depth, and also choose the most suitable pipes to lift water, install, if necessary, an insurance system.

After dismantling the pump, it is worthwhile to conduct video diagnostics of the well, since in this way it is possible to objectively assess its degree of deterioration and performance. The operating periods for wells are determined in different ways. If all the necessary conditions installation and use of the pump are correct, problems are unlikely to occur.

Submersible pumps (ETsV pumps) are subject to natural wear and tear during operation. Therefore, in order to prevent premature failure of the unit, it is periodically dismantled, routine inspection and replacement of worn parts. The frequency of preventive inspections is set by the manufacturers.

It should be noted that during the repair, the disassembly of the unit must be carried out in the sequence established instruction. When disassembling the pump, it is recommended to place all parts in order to maintain their previous position during subsequent assembly.

Repair of the ETsV pump at the factory is carried out in such cases:

If the rubber bearings are swollen due to improper storage of the unit or the pump shaft is jammed with a ball valve. The first sign of such a malfunction is an idle engine and a tripped protection;
If the impellers are clogged. In this case, the unit will not required performance;
If the pump part or unit is not assembled correctly during the revision. A sign of such a malfunction may be water supplied by the unit to the surface in jolts.

It should be noted that manufacturers of pumping units disclaim warranty obligations for the repair of submersible pumpsif the consumer has violated the rules for transportation, storage, installation and operation of the unit.

Probable Causes and there are many signs of malfunction of pumping units.

The main ones are described below.

1. The pump does not start.

1.1. Damage to the conductive cable during transportation. Method of elimination - find the place of damage and eliminate;

1.2. Lack of tension. Remedy - ensure the rated voltage at the terminals of the conductive cable.

2. After a short operation of the pump, protection is activated.

2.1. The electric motor is overloaded. Remedy - reduce the pump flow with a valve;

2.2. Incorrect adjustment of the machine. Remedy - check and adjust the machine for the required trip current;

2.3. Control station malfunction. Remedy - inspect the control station. Check the control and protection circuit.

3. No water supply.

3.1. The pump is above the dynamic water level. Remedy - lengthen the column lifting pipes.

4. The pump delivers water to the surface in jolts.

4.1. The well flow rate is small. Remedy - deepen the unit;

4.2. Incorrect assembly of the pump part or unit during the revision. Remedy - repair at the factory.

5. The pump does not provide the required performance.

5.1. Leakage in the column of water-lifting pipes. Remedy - dismantle the unit and eliminate leaks;

5.2. Clogged protective mesh, high suction resistance. Remedy - clean the grid by back pumping water through the column of water-lifting pipes;

5.3. Wrong direction of rotation. Remedy - change the direction of rotation by swapping two phases;

5.4. Clogged impellers, broken blades. Remedy - repair at the factory.

6. The electric motor does not work, the protection works.

6.1. Due to improper storage, the rubber bearings swell or the pump shaft is jammed by the ball valve. Remedy - repair at the factory.

Dismantling and routine inspections are carried out within the time limits established by the instructions. The ETsV pump must be stopped and dismantled for inspection in any of the the following cases: water supply stopped; the current consumed by the motor exceeds the allowable; supply is 25% less than nominal.

Let's take a closer look at the scheme for installing pumps in a well. Well, this is provided that you have chosen the right pump. You can find out how to choose the right ETsV pump by clicking on the link (.

So, first you need to make sure that the pump is of the right diameter, then prepare water pipes through which water will rise from the well to the surface. Consider two options for lowering the pump into the well.

1 option:

Many still use "The Old Way" iron pipes which is very inconvenient. If the pipes are iron, then lowering the pump into the well can take a whole day. Pipes, as a rule, are 2-3 meters each, but imagine if the pump needs to be lowered, for example, by 80 meters.

The crane lifts the pump on a cable, the first section of the pipe is attached to the pump 2-3 meters, then the pump is lowered a little, the second section is taken, it is also attached and so on until the pump reaches the desired depth. Agree, the "procedure" is not easy?! And if you hire a crane and pay by the hour, then lowering the pump will cost you a lot of money, not counting the cost of the pump.

Option 2:

This option is more modern and less expensive. So, how does everything happen in the second option? Here, compared with the first option, the pipes are plastic, not iron, which immediately facilitates the work several times.

The first of the advantages is that the crane is no longer needed and you save a lot of money. The pipe is taken of the same length (solid), it is usually wound into a coil. We attach the pipe to the pump using special adapters, I think there is no need to explain where to get them.

Now we mount the pump on the cable, it is desirable that the cable be metal-polymer for borehole pumps(). This cable is specially designed for such tasks and is more reliable, although you can use any other.

In this case, two or three people, with the help of a safety rope and enthusiasm, will be able to install the pump into the well without any problems. For convenience, you can resort to the help of the so-called "tripod" (or winch), with the help of which it is even easier and faster to lower and raise the pump, and most importantly - FREE OF CHARGE.

General requirements

The pump must be located in the well above the filter by at least 1 meter and below the dynamic level by 1 meter. Who does not know what a dynamic level is, you can read.

At the exit from the well, there must be a pressure gauge, a valve and check valve. There should also be a pump control station nearby. Our company has been dealing with stations for many years "Cascade" and they justify themselves. Here you can learn about them more information( . The scheme of installing the pump in the well is shown in the figure.

Local water supply of a number of Moscow region areas requires drilling artesian wells with installation of deep pumps. Away from centralized water supply such a scheme is used by SNT (Gardening Associations), sanatoriums, recreation centers, farms, vast country estates. With significant volumes of water taken (for irrigation, water heating, filling pools, reserve tanks), it is necessary to install pumps that supply water in a very large volume.

The classification of ETsV pumps is very extensive.

Russian consumers for large volumes of water supply most often prefer the installation industrial pumps ECV brand. domestic manufacturer(factories "Energokomplekt", "Livnynasos", "Barnaul"), at a lower cost, produces pumping equipment that is not inferior in performance to the famous brands Grundfos, SPERONI, PEDROLLO.

Centrifugal pumps EVC are divided into surface and submersible. Multistage deep pumping stations ECV stations supplied with a robust housing ( stainless steel, cast iron), impellers made of anticorrosive materials (reinforced polymers, bronze, stainless steel). The ETsV series of pumps lift water from depths of 60–350 meters.

Causes of breakdowns

Causes of breakdowns pumping equipment become natural wear and tear, lack of prevention, accidental damage (lowering of the aquifer, failures of automation).

Statistically common faults are:

depressurization of the pump housing (requires complete replacement equipment);
deformation, destruction of impellers;
breakdown of the stator winding;
breakage of the cable, pump mounts;
check valve failure.

Understand the causes of failure deep pump is possible only after lifting the equipment from the well, disassembling and diagnosing.

Complicated repair, replacement of ETsV pumps

Breaking incorrectly leads to complex operations installed pump. It is unrealistic to manually pull out a broken ECV pump from the well. To retrieve the equipment, a video inspection of the well casing, special cables, traps, grabs, winches, and a truck crane are used.

Replacing the ETsV pump in the Moscow region requires qualified performance of the following operations:

pump lifting;
disassembly (you need a special tool);
fault diagnosis, determination of the possibility of partial repair;
proper installation, installation of new equipment;
automation testing;
checking equipment for functionality.

When replacing the ECV pump in the well, the cost of work increases with the repair of automation (Kaskad, SUZ stations, etc.). This requires diagnostics, replacement of pressure switches, sensors, switches, adjustment of automation.

Favorable offers of the company "Voda-People"

The Moscow company "Voda-Narodu" offers Moscow region enterprises a range of works on the organization of water supply: drilling wells, services for the replacement of industrial-type pumps, repair of equipment, preventive examinations, contract maintenance. The qualifications of the craftsmen, the authority of the company do not allow complaints. The quality of work is confirmed by company guarantees.

Artesian pumps of the ETsV type are subject to natural wear and tear during operation. In order to prevent premature failure of the unit, it is periodically dismantled, preventive diagnostics and replacement of worn parts are carried out. The frequency of routine inspections is set by the manufacturers.

Pumps are repaired in the following cases:

If the rubber bearings are swollen due to improper storage of the unit or the pump shaft is jammed with a ball valve. This can be understood by an idle engine or a tripped protective shutdown;
If the impellers are dirty. In this case, the pumping unit will not give the performance calculated according to the well parameter;
Incorrect centering of the pumping part. A sign of this malfunction may be water supplied by the unit to the surface in jolts.

It should not be forgotten that the manufacturers of ECV pumps withdraw their warranty obligations if the consumer violates the rules for transporting, storing, installing and operating the unit.

Some signs of a malfunctioning pumping unit: