The ECV pump is a domestic brand of equipment that is designed to draw water from fairly deep artesian depressions. Several companies are engaged in the production of this equipment in the Russian Federation, but the largest of them are Livnynasos and Energokomplekt. These companies began to supply their equipment to the equipment market 30 years ago. Their devices are attractive to this day, as they are distinguished by high power and affordable price.
Unit device
The ETsV deep pump is a series of multistage centrifugal units. The design of such units is quite simple and consists of two main elements - this is an electric motor and impellers. These two elements are interconnected by means of a rigid direct coupling. If we talk about the complete set of this pumping equipment, then there are also such elements as: a cable for connecting to electricity, a supply pipe, as well as an automatic object control system.
The case of this device can be made of materials such as cast iron or stainless steel. If we talk about raw materials for the production of impeller wheels, then here can be used a polymer reinforced with fiberglass, or stainless steel with bronze. It is worth noting that the second version of the assembly is used much less frequently. Another distinctive part of the ECV pump device is two pairs of bearings of different types.
The first type is the thrust elements, which are located in the lower part of the housing, and are designed to protect the electric motor from displacement, which can occur due to axial loads. The second type is the rotor parts, which play the role of a locking element. They are also the main, rotating part for the rotor of the motor, and the pumping station.
Work of pump parts
The ECV pump is equipped with a nozzle that is designed to be attached to a pipe that discharges water. This part is also blocked by a mechanical type filter. The mesh installed inside is designed to prevent large mechanical particles of debris from entering the housing. This significantly increases the service life of the device, as the wear of internal parts is greatly reduced.
There are many models of these devices and depending on their belonging to a particular class. The electric drive of the pump is able to develop the speed of rotation of the impellers up to 3 thousand rpm. Engine cooling in ECV pumps is carried out due to the medium that the pump pumps. In order to make this possible, it was necessary to make the stator winding completely moisture resistant.
Instrument Operation
Another small but very important part is the check valve, which is located on the inlet pipe. The main task of this element is to preserve the fluid inside the pump after disconnecting the station from power. Also, this part prevents the engine from rotating in the opposite direction.
If we talk about the principle of operation of deep and submersible ECV pumps, then they are identical. When voltage is applied, the engine starts, which drives the impeller. This movement causes centrifugal force inside the pump casing.
Equipment classification
The ECV pump has a fairly extensive lineup, which includes more than 50 models. There are two types of connection - flange or threaded. Near the abbreviation ECV there are always a few numbers. They indicate the diameter of the casing for which the pump is designed. For example, the ECV 10 pump is suitable for those wells whose internal diameter is 10 inches. If we talk about the performance for each model, then it varies from 4 m 3 / h to 7 m 3 / h. Another important characteristic of pumps is the height of the water intake. The maximum for this parameter is 160 meters, which is a lot. This allowed the use of units for industrial purposes.
It is worth noting that there are models such as ECV 6, which are used for casing pipes with a diameter of 6 inches. A distinctive feature for this model is the increased productivity, which reaches 17 m 3 / h.
Pump Range
It is also important to note that a vast number of types is also divided by such a parameter as the feed rate. It can be 4, 6.5 10, 16, 25 m 3 / h. These feed rates belong to the 6 inch pipe range. One of the most popular models of this branch of devices was the ECV 6 10 80 pump.
The following parameters can be attributed to technical parameters:
- as can be seen from the marking, the flow rate of this pump is 10 m 3 / h;
- pressure for this model, m - 80;
- engine power for such a pump should be at least 4 kW;
- working current strength - 8 A;
- the diameter of the pipeline is 145 mm, and the length is 1200 mm;
- the total weight of the equipment reaches 66 kg.
One of the most powerful devices in this line was 6 16 160 and 6 16 190. The characteristics of the ECV pumps of these models are as follows: they have the same performance of 16 m 3 / h, and both are suitable for 6 inch pipes. These types of units can supply water with a pressure from 160 and 190 m, respectively. Their length is 2000 and 2200 mm, and the power of the engine that is used reaches 13 kW. The total weight is 100 and 104 kg.
Operating modes
When buying such equipment, it is important to know that ECVs can only be operated in tandem with the control station. Of the proven brands that are excellent for such equipment are the CPS and Cascade stations. However, more often the preference is still given to the first category, since the functionality of these devices is much wider than any other.
There are three operating modes:
- Automatic The operating mode is based on data obtained from pressure and water level sensors inside the working pumps. It is possible to connect to a pressure switch.
- Local government. Start and shutdown of the station is carried out using a switch, placed in a convenient place.
- Remote control type. A power cable is connected to the pump, the maximum length of which reaches 2 km.
It should be noted that regardless of which operating mode is activated, these automatic control stations perform a number of functions. In automatic mode, the motor turns off when there is a strong voltage surge or when the phase of the power cable is cut off. It also disconnects the pump from operation if there is too low a water level inside the workspace. It has an alarm signaling overloads or when the pump is in dry running mode.
Cost of equipment
Naturally, the cost of units will depend on their performance. The higher the productivity, the longer the pipe, the more powerful the engine, etc., the higher the price. An ECV pump with not very high technical indicators costs around 10 thousand rubles. Powerful models that are installed on 10-inch pipes and have high performance can cost up to 90 thousand rubles or more.