RU17346U1 - STAND FOR TESTING SUBMERSIBLE ELECTRIC CENTRIFUGAL PUMPS - Google Patents

Abstract

Test bench for submersible centrifugal pumps, including a bed with carriages for installing a test pump with a water supply head at the pump inlet and a high-pressure outlet hose, with instrumentation: flow meters, a tachometer, a torque sensor and a pressure sensor, a booster pump and tanks with working fluid, characterized in that it is equipped with a computer with testing software and a printer for printing the pump performance, and electronic transducers signals of instrumentation connecting the computer with sensors of instrumentation located on the water supply head and on the high pressure hose, and the electric motor of the main drive, and the water supply head - a shaft with splines and spline couplings connecting the electric motor of the main drive to the pump under test, communicated by its cavity with the cavity of the booster pump.

Description

STAND FOR TESTING SUBMERSIBLE CENTRIFUGAL PUMPS

The utility model relates to stands for hydrodynamic testing of machines, and more specifically, to stands for testing pumping units of submersible units of electric centrifugal pumps for the purpose of testing - taking the performance of devices under conditions close to downhole.

Known stands for testing submersible centrifugal pumps containing a bed, tested hydraulic cylinders, high pressure hoses, a drive mechanism and an electro-hydraulic distributor (AS USSR No. 1492112, MKI 4: F15B, 19/00, publ. 07.07.89, bull.№ 25).

A disadvantage of the known stands is the inability to measure the characteristics of the torque due to the lack of a rotary drive and a tachometer and torque sensor.

This drawback was eliminated in the design of the test bench for submersible centrifugal pumps, including a bed with carriages for installing the test pump with a water supply head at the pump inlet and a high pressure hose at the outlet, with instrumentation: flow meters, a tachometer, a torque sensor and a pressure sensor, a booster pump and containers with a working fluid (AS No. 1506184 MKI4: F15B, 19/00, publ. 07.09.89, bull. No. 33 - prototype).

However, the known design also does not allow to quickly obtain the performance of the tested pump in the process of bench research.

The problem solved by the use of the proposed utility model is to ensure prompt receipt of the performance characteristics of the tested pump.

The technical essence of the utility model lies in the fact that the well-known test bench for submersible centrifugal pumps, including a bed with carriages for installing the test pump with a water supply head at the pump inlet and the pressure hose at the outlet, with control and measuring equipment: flow meters, tachometer, torque sensor moment and pressure sensor, a booster pump and containers with a working fluid, is equipped with a computer with testing software and a printer for printing job data characteristics of the pump, and electronic signal converters of instrumentation connecting the computer with

MKI5: O01 M, 10/00 F 04 0.13 / 10 F 15 V, 19/00

sensors of control and measuring equipment located on the water supply head and on the high pressure hose, and the main drive electric motor, and the water supply head - a shaft with splines and splined couplings connecting the main drive electric motor with the test pump communicated by its cavity with the booster pump cavity.

Providing a test bench with a computer with testing software and a printer for printing the pump performance provides the efficiency of processing the data obtained during the study and the visibility of the research results.

The supply of the stand with electronic signal converters of instrumentation, connecting the computer with the sensors of instrumentation, provides computer-recognized signals.

Placing the sensors of the control and measuring equipment on the water supply head and on the high pressure hose ensures a sufficiently high accuracy of the received signals without changing the design of the tested pump.

Providing the stand with the main drive electric motor, and the water supply head with a shaft with splines and splined couplings connecting the main drive electric motor with the test pump communicated by its cavity with the booster pump cavity, ensures the creation of torques on the shaft of the pump under test, as well as test conditions close to downhole.

In FIG. graphic application depicts a basic hydropneumokinematic diagram of the inventive stand.

The proposed device consists of a bed (not shown in FIG.), On which the electric motor of the main drive 1 is placed, the shaft of which is connected via an elastic coupling 2 to the shaft of the water supply head 3, which is connected during the research to the input of the tested pump 4 (shown by a dashed line), the output of which equipped with a high pressure hose 5.

Connected with a water supply head 3: an oil tank 6, a booster pump 7, a pressure reducing valve 8 and instrumentation: a rotation sensor (tachometer) 9 and a pressure sensor 10, the information from which is supplied (in Fig. Shown by arrows) to a computer 11 equipped with an appropriate software and printer 12 for the rapid output of test results.

The booster pump 7 communicates the cavity of the water supply head 3 and then of the test pump 4 through the control valves 13 with the cavity of the test container 14, which is connected by the pump unit 15 with the filter 16 to the tank for running the pumps 17. The tanks 14 and 17 are equipped with level gauges 18.

The high-pressure hose 5 is equipped with: a high-pressure sensor 19 with a converter 20 in communication with a computer 11, a high-pressure filter 21, an electro-pneumatic valve 22 with an electro-pneumatic converter 23, in communication with a computer 11, a check valve 24, an electro-valve 25 in communication with a computer 11 and through a viewing cylinder 26 and reverse

valve 27 - with a container for running the pumps 17. With the cavity of the tank for testing 14, the high-pressure hose 5 is connected through flowmeters 28, 29 and 30 connected to the computer 11, between which valves 13 and the check valve 31 and the solenoid valve 32 connected to the computer eleven.

The proposed device operates as follows.

The shaft of the tested pump 4 is connected by means of a water supply head 3 to the shaft of the electric motor of the main drive 1, and the cavity is connected to the cavity of the test container 14, and also to the computer 11 by means of a rotation sensor 9 and pressure sensor 10. The output of pump 4 is connected by a high pressure hose to a high pressure sensor pressure 19 with a converter 20, a high pressure filter 21, an electro-pneumatic valve 22 with an electro-pneumatic converter 23, a non-return valve 24, an electro-valve 25, and through a viewing cylinder 26 and a non-return valve 27 with a tank for running the pumps 17. With the cavity of the test tank 14, the high-pressure hose 5 is connected through flow meters 28, 29 and 30, between which valves 13 and the check valve 31 and the solenoid valve 32 are located. All control and measuring equipment (high-pressure sensor 19c with converter 20, electropneumatic valve 22 with an electro-pneumatic converter 23, a non-return valve 24, an electrovalve 25, flow meters 28, 29, 30, and an electrovalve 32) located on the hose are connected to a computer 11.

Then they turn on the electric motor of the main drive 1 and take the obtained characteristics of the tested pump 4. Regulation of the input data is achieved by changing the speed of rotation of the shaft of the electric motor 1 and valves 13.

Feasibility or other efficiency.

1. Improving the manufacturability and quality of the testing process.

2. Obtaining operational and highly reliable information about the performance of the pump.

Claims (1)

Test bench for submersible centrifugal pumps, including a bed with carriages for installing a test pump with a water supply head at the pump inlet and a high-pressure outlet hose, with instrumentation: flow meters, a tachometer, a torque sensor and a pressure sensor, a booster pump and tanks with working fluid, characterized in that it is equipped with a computer with testing software and a printer for printing the pump performance, and electronic transducers signals of instrumentation connecting the computer with sensors of instrumentation located on the water supply head and on the high pressure hose, and the electric motor of the main drive, and the water supply head - a shaft with splines and spline couplings connecting the electric motor of the main drive to the pump under test, communicated by its cavity with the cavity of the booster pump.