CN210343747U - Pump hydraulic test system - Google Patents
Pump hydraulic test system Download PDFInfo
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- CN210343747U CN210343747U CN201920940967.6U CN201920940967U CN210343747U CN 210343747 U CN210343747 U CN 210343747U CN 201920940967 U CN201920940967 U CN 201920940967U CN 210343747 U CN210343747 U CN 210343747U
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Abstract
The utility model provides a pump hydraulic test system, which comprises a high-voltage electric starting subsystem, a motor driving subsystem, a high-voltage storage tank subsystem, a process pipeline subsystem and a data acquisition subsystem; the high-voltage power-on subsystem is connected with the motor driving subsystem and is used for providing power for the motor driving subsystem and enabling the motor driving subsystem to realize adjustable rotating speed; the motor driving subsystem is used for providing a rotary driving force for the pump; the pump is connected with the high-pressure storage tank subsystem through the process pipeline subsystem; the high-pressure storage tank subsystem is used for providing a water source and adjusting the pressure of the purified water at the inlet of the pump; the process pipeline subsystem is used for realizing the transportation and the discharge of purified water and the transportation and the discharge of gas; the data acquisition subsystem is used for acquiring the pressure, the temperature, the flow, the rotating speed, the torque and the input power of the pump in real time. The utility model discloses can carry out hydraulic performance test and cavitation test to the pump, judge and provide accurate test data support with the product improvement design for the performance of pump.
Description
Technical Field
The utility model belongs to the technical field of the high-speed pump test, concretely relates to high-speed high-power pump hydraulic test system.
Background
As an important component of a liquid rocket engine, a turbopump is high in rotating speed generally in a working state, complex in stress condition and strict in performance requirement. Therefore, the performance of the designed product cannot be confirmed only by theoretical calculation, and the severe requirements of the engine on the performance of the turbopump can be met only by various experimental verifications.
In particular, it must be ensured that the pump reaches the rated head, flow and efficiency at the rated speed, while it must be ensured that it has cavitation resistance. Therefore, in order to meet the requirements of research, development and production of the high-power turbopump, a high-speed high-power pump hydraulic test system needs to be developed to simulate the working condition of the turbopump and test the performance of the turbopump by using the rotating speed, the power and the like. The hydraulic test system for the high-speed high-power pump needs to have good performance in a high-rotating-speed state, and is stable in structure and stable in operation.
Disclosure of Invention
For overcoming the problem that exists in the correlation technique at least to a certain extent, the utility model provides a high-speed high-power pump hydraulic test system.
According to an embodiment of the present invention, the present invention provides a pump hydraulics testing system, which includes a high-voltage electric starting subsystem, a motor driving subsystem, a high-voltage storage tank subsystem, a process pipeline subsystem and a data acquisition subsystem;
the high-voltage power-on subsystem is connected with the motor driving subsystem and is used for providing power for the motor driving subsystem and enabling the motor driving subsystem to realize adjustable rotating speed;
the motor driving subsystem is used for providing a rotary driving force for the pump; the pump is connected with the high-pressure storage tank subsystem through the process pipeline subsystem;
the high-pressure storage tank subsystem is used for providing a water source and adjusting the pressure of purified water at the pump inlet;
the process pipeline subsystem is used for realizing the transportation and the discharge of purified water and the transportation and the discharge of gas;
the data acquisition subsystem is used for acquiring the pressure, the temperature, the flow, the rotating speed, the torque and the input power of the pump in real time.
In the hydraulic test system of the pump, the high-voltage electric starting subsystem comprises a 10kV high-voltage power supply, a frequency converter and a switch cabinet; the 10kV high-voltage power supply is connected with a frequency converter, the frequency converter is connected with a switching cabinet, and the switching cabinet is connected with a motor driving subsystem.
Further, the motor driving subsystem comprises a variable-frequency three-phase asynchronous motor, a low-speed coupler, a speed-up gear box and a high-speed coupler; the variable-frequency three-phase asynchronous motor is connected with the input end of the low-speed coupler, the output end of the low-speed coupler is connected with the input end of the speed-increasing gear box, and the output end of the speed-increasing gear box is connected with the input end of the pump.
Furthermore, the high-pressure storage tank subsystem comprises a high-pressure storage tank and a water adding pipeline, a purified water source is connected with a water inlet of the high-pressure storage tank through the water adding pipeline, and a water adding electromagnetic valve and a water adding hand valve are arranged on the water adding pipeline;
the water adding solenoid valve and the water adding hand valve are both used for opening or closing the water adding pipeline.
Furthermore, the process pipeline subsystem comprises a purified water conveying pipeline subsystem, a pressurization pipeline subsystem and a vacuum exhaust pipeline subsystem;
the purified water conveying pipeline subsystem is used for conveying purified water for the pump, and the pressurization pipeline subsystem is used for providing pressurization gas for the pump hydraulic test system; and the vacuum exhaust pipeline subsystem is used for changing the pressure of the pump inlet pipeline when the pump is subjected to a cavitation performance test.
Furthermore, the purified water conveying pipeline subsystem comprises a water outlet electric gate valve, a pump inlet filter, a metal corrugated hose, a metal corrugated pipe, an electric regulating valve, a pump outlet filter and a water return electric gate valve;
the water outlet of the high-pressure storage tank is connected with the inlet of the pump sequentially through the water outlet electric gate valve, the pump inlet filter and the metal corrugated hose, and the outlet of the pump is connected with the water return port of the high-pressure storage tank sequentially through the metal corrugated pipe, the electric regulating valve, the pump outlet filter and the water return electric gate valve.
Further, the pressurization pipeline subsystem comprises a pressurization pipeline and a pressurization electromagnetic valve; the pressurization gas source is connected with the gas inlet of the high-pressure storage tank through the pressurization pipeline, and the pressurization pipeline is provided with a pressurization electromagnetic valve which is used for opening or closing the pressurization pipeline.
Furthermore, the vacuum exhaust pipeline subsystem comprises a vacuum pump and a vacuum exhaust electromagnetic valve; the vacuum pump is connected with a high-pressure storage tank exhaust pipeline through a vacuum exhaust pipeline, the vacuum exhaust pipeline is provided with a vacuum exhaust electromagnetic valve, and the vacuum exhaust electromagnetic valve is used for opening or closing the vacuum exhaust pipeline.
Furthermore, the data acquisition subsystem comprises a pump inlet pressure sensor, a pump outlet pressure sensor, a pump inlet water temperature sensor, a pump outlet water temperature sensor, a pump inlet flowmeter, a pump outlet flowmeter and a torque meter;
the pump inlet pressure sensor is arranged at a position 2 d-5 d away from the inlet of the pump, and the pump outlet pressure sensor is arranged at a position 2 d-5 d away from the outlet of the pump, wherein d represents the diameter of the purified water conveying pipeline;
the pump inlet water temperature sensor is positioned on the purified water conveying pipeline close to the water outlet of the high-pressure storage tank and is arranged between the water outlet electric gate valve and the pump inlet filter; the water outlet temperature sensor is positioned on the purified water conveying pipeline close to the water return port of the high-pressure storage tank and is arranged between the pump outlet filter and the water return electric gate valve.
The pump inlet flowmeter is positioned on the purified water conveying pipeline close to the pump inlet and is arranged between the pump inlet filter and the metal corrugated hose; the pump outlet flow meter is positioned on the purified water conveying pipeline close to the pump outlet and is arranged between the electric regulating valve and the pump outlet filter;
the torque meter is arranged between the speed-increasing gear box and the pump, the input end of the torque meter is connected with the output end of the speed-increasing gear box, and the output end of the torque meter is connected with the input end of the pump.
Furthermore, a first high-point exhaust valve is arranged on the purified water conveying pipeline and between the pump inlet filter and the metal corrugated hose; a second high-point exhaust valve is arranged between the pump outlet filter and the backwater electric gate valve;
first high point discharge valve and second high point discharge valve all are used for exhausting pure water conveying pipeline.
According to the above embodiments of the present invention, at least the following advantages are obtained: the utility model discloses can carry out hydraulic performance test and cavitation test to the pump, the result of use is good, satisfies the designing requirement, can provide accurate test data support for the performance judgement and the product improvement design of pump.
The pump hydraulic test system provided by the utility model has stable operation, reasonable structure and strong stability in a high-speed state; and each measured value obtained at high rotating speed is accurate and has high confidence coefficient. The utility model discloses a pump hydraulic test system can provide rotary power for the pump, makes the rotational speed of pump can change in great range, can realize the torque measurement under the high rotational speed simultaneously. The utility model discloses a poisonous, flammable and explosive actual fluid medium is replaced to the pure water, and the security is good.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification of the invention, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a block diagram of an overall structure of a hydraulic test system of a pump according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a high voltage electric starter subsystem in a pump hydraulic test system according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a motor driving subsystem in a pump hydraulic test system according to an embodiment of the present invention.
Fig. 4 is a schematic view of a connection relationship between a process pipeline subsystem and a high-pressure tank subsystem in a pump hydraulic test system according to an embodiment of the present invention.
Description of reference numerals:
1. a high voltage electrical starting subsystem; 11. a 10kV high-voltage power supply; 12. a frequency converter; 13. a switch cabinet;
2. a motor drive subsystem; 21. a variable frequency three-phase asynchronous motor; 22. a low speed coupling; 23. a speed-increasing gear box; 24. a high-speed coupling; 25. a pump frame;
3. a high pressure tank subsystem; 31. a high pressure tank; 32. a water adding pipeline; 33. a water adding electromagnetic valve; 34. adding a water hand valve; 35. a high pressure tank exhaust solenoid valve; 36. a high pressure tank exhaust hand valve;
4. a process piping subsystem;
41. a purified water conveying pipeline subsystem; 411. an electric gate valve for water outlet; 412. a pump inlet filter; 413. a metal corrugated hose; 414. a metal bellows; 415. an electric control valve; 416. an outlet filter; 417. a backwater electric gate valve; 418. a first high point exhaust valve; 419. a second high point exhaust valve;
42. a pressurization pipeline subsystem; 421. a pressurization pipeline; 422. a booster solenoid valve;
43. a vacuum exhaust piping subsystem; 431. a vacuum pump; 432. a vacuum exhaust solenoid valve;
5. a data acquisition subsystem; 51. a pump inlet pressure sensor; 52. a pump outlet pressure sensor; 53. a pump inlet water temperature sensor; 54. a pump-out water temperature sensor; 55. a pump inlet flow meter; 56. an outlet flow meter; 57. a torque meter;
10. and (4) a pump.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the spirit of the present invention will be described in detail with reference to the accompanying drawings, and any person skilled in the art can change or modify the techniques taught by the present invention without departing from the spirit and scope of the present invention after understanding the embodiments of the present invention.
The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention. Additionally, the same or similar numbered elements/components used in the drawings and the embodiments are used to represent the same or similar parts.
As used herein, the terms "first," "second," …, etc. do not denote any order or sequential importance, nor are they used to limit the invention, but rather are used to distinguish one element from another or from another element or operation described in the same technical language.
With respect to directional terminology used herein, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present teachings.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
As used herein, "and/or" includes any and all combinations of the described items.
References to "plurality" herein include "two" and "more than two"; reference to "multiple sets" herein includes "two sets" and "more than two sets".
As used herein, the terms "substantially", "about" and the like are used to modify any slight variation in quantity or error that does not alter the nature of the variation. In general, the range of slight variations or errors that such terms modify may be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments, or other values. It should be understood by those skilled in the art that the aforementioned values can be adjusted according to actual needs, and are not limited thereto.
Certain words used to describe the invention are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the invention.
As shown in fig. 1, the utility model provides a pump hydraulic test system, it includes high-tension electricity start-up subsystem 1, motor drive subsystem 2, high-pressure storage tank subsystem 3, process pipeline subsystem 4 and data acquisition subsystem 5.
The high-voltage power-on subsystem 1 is connected with the motor driving subsystem 2 and is used for providing power for the motor driving subsystem 2 and enabling the motor driving subsystem 2 to achieve adjustable rotating speed.
The motor drive subsystem 2 is used to provide rotational drive to the pump 10. The pump 10 is connected to the high pressure tank subsystem 3 through the process piping subsystem 4.
The high pressure tank subsystem 3 is used to provide a stable and adequate source of water and to regulate the pressure of the purified water at the inlet of the pump 10.
The process pipeline subsystem 4 is used for realizing the transportation and the discharge of pure water and the transportation and the discharge of gas.
The data acquisition subsystem 5 is used for acquiring parameters such as pressure, temperature, flow, rotating speed, torque and input power of the pump in real time and transmitting the acquired parameters to an external measurement and control system.
In the above embodiment, as shown in fig. 2, the high-voltage electric starting subsystem 1 includes a 10kV high-voltage power supply 11, a frequency converter 12 and a switch cabinet 13. The 10kV high-voltage power supply 11 is connected with the frequency converter 12, the frequency converter 12 is connected with the switch cabinet 13, and the switch cabinet 13 is connected with the motor driving subsystem 2. The frequency converter 12 converts the input 10kV high-voltage alternating current into an alternating current with adjustable voltage and adjustable frequency, and outputs the alternating current to the motor driving subsystem 2 through the switch cabinet 13.
In the above embodiment, as shown in fig. 3, the motor drive subsystem 2 includes a variable frequency three-phase asynchronous motor 21, a low speed coupling 22, a step-up gear box 23, and a high speed coupling 24. The variable frequency three-phase asynchronous motor 21 is connected with the input end of the low-speed coupling 22 through a key, the output end of the low-speed coupling 22 is connected with the input end of the speed-increasing gear box 23 through a key, and the output end of the speed-increasing gear box 23 is connected with the input end of the pump 10.
The motor drive subsystem 2 further comprises a pump mount 25, the pump 10 being mounted on the pump mount 25.
By changing the step-up ratio of the step-up gear box 23, different rotational speeds can be obtained. For example, when the maximum rotation speed output by the inverter three-phase asynchronous motor 21 is 3000rpm and the step-up ratio of the step-up gear box 23 is set to 1:6, 1:8, 1:10, etc., the corresponding maximum rotation speeds finally obtained are 18000rpm, 24000rpm, and 30000 rpm.
By changing the output mode of the step-up gear box 23, different rotation speeds can be obtained. For example, the maximum rotation speed output by the variable-frequency three-phase asynchronous motor 21 is 3000rpm, two output shafts are arranged in the speed-increasing gearbox, the speed-increasing ratio of each output shaft is different and is 1:6 and 1:10 respectively, and finally the system can output two different rotation speeds 18000rpm and 30000rpm simultaneously.
In the above embodiment, as shown in fig. 4, the high-pressure tank sub-system 3 includes the high-pressure tank 31 and the filler pipe 32. The purified water source is connected with the water inlet of the high-pressure storage tank 31 through a water adding pipeline 32, and the water adding pipeline 32 is provided with a water adding electromagnetic valve 33 and a water adding hand valve 34. The water addition solenoid valve 33 is used to open or close the water addition line 32. The water addition hand valve 34 is used to manually open or close the water addition line 32.
The process piping subsystem 4 includes a purified water delivery piping subsystem 41, a pressurization piping subsystem 42, and a vacuum exhaust piping subsystem 43. The purified water conveying pipeline subsystem 41 is used for conveying purified water for the pump 10, and the pressurization pipeline subsystem 42 is used for providing pressurization gas for the pump hydraulic test system. The vacuum exhaust line subsystem 43 is used to vary the pressure in the inlet line of the pump 10 during cavitation performance testing of the pump 10.
The purified water delivery pipeline subsystem 41 comprises a water outlet electric gate valve 411, a pump inlet filter 412, a metal corrugated hose 413, a metal corrugated pipe 414, an electric regulating valve 415, a pump outlet filter 416 and a water return electric gate valve 417.
Wherein, the water outlet of the high-pressure storage tank 31 is connected with the inlet of the pump 10 sequentially through the electric water outlet gate valve 411, the pump inlet filter 412 and the metal corrugated hose 413, and the outlet of the pump 10 is connected with the water return port of the high-pressure storage tank 31 sequentially through the metal corrugated pipe 414, the electric adjusting valve 415, the pump outlet filter 416 and the electric water return gate valve 417.
A first high-point exhaust valve 418 is arranged between the pump inlet filter 412 and the corrugated metal hose 413 on the purified water conveying pipeline; and a second high-point exhaust valve 419 is also arranged between the pump outlet filter 416 and the backwater electric gate valve 417 on the purified water conveying pipeline. The first high-point exhaust valve 418 and the second high-point exhaust valve 419 are both used for exhausting the purified water conveying pipeline so as to fill the purified water conveying pipeline with water.
The vacuum exhaust piping subsystem 43 includes a vacuum pump 431 and a vacuum exhaust solenoid valve 432. The vacuum pump 431 is connected with the high-pressure storage tank exhaust pipeline through a vacuum exhaust pipeline, a vacuum exhaust solenoid valve 432 is arranged on the vacuum exhaust pipeline, and the vacuum exhaust solenoid valve 432 is used for opening or closing the vacuum exhaust pipeline. The high-pressure tank exhaust pipeline is provided with a high-pressure tank exhaust electromagnetic valve 35 and a high-pressure tank exhaust hand valve 36. The high-pressure tank exhaust solenoid valve 35 is used to open or close the high-pressure tank exhaust line. The high-pressure tank vent hand valve 36 is used to manually open or close the high-pressure tank vent line.
The data acquisition subsystem 5 comprises a pressure sensor, a temperature sensor, a flowmeter and a torque meter. A pump inlet pressure sensor 51 is provided at a position spaced from the inlets 2d to 5d of the pump 10, and a pump outlet pressure sensor 52 is provided at a position spaced from the outlets 2d to 5d of the pump 10, where d represents the diameter of the purified water delivery pipe. The pump inlet pressure sensor 51 is used to collect the inlet pressure of the pump 10 at different rotational speeds, and the pump outlet pressure sensor 52 is used to collect the outlet pressure of the pump 10 at different rotational speeds.
A pump inlet water temperature sensor 53 is arranged between the outlet electric gate valve 411 and the pump inlet filter 412 on the purified water conveying pipeline close to the outlet of the high-pressure storage tank 31. A water outlet temperature sensor 54 is provided between the pump outlet filter 416 and the return electric gate valve 417 on the purified water delivery line near the return port of the high-pressure tank 31. The pump inlet water temperature sensor 53 is used to collect the temperature of the purified water flowing into the inlet of the pump 10, and the pump outlet water temperature sensor 54 is used to collect the temperature of the purified water flowing out of the outlet of the pump 10.
A pump inlet flowmeter 55 is provided on the purified water delivery line near the inlet of the pump 10, between the pump inlet filter 412 and the corrugated metal hose 413. A pump outlet flow meter 56 is provided on the purified water delivery line near the outlet of the pump 10 between the electric control valve 415 and the pump outlet filter 416. The pump inlet flow meter 55 is used for acquiring the inlet flow of the pump 10 at different rotation speeds, and the pump outlet flow meter 56 is used for acquiring the outlet flow of the pump 10 at different rotation speeds.
The torque meter 57 is disposed between the speed-increasing gear box 23 and the pump 10, an input end of the torque meter 57 is connected to an output end of the speed-increasing gear box 23 through a flange, an output end thereof is connected to an input end of the pump 10 through a spline, and the torque meter is used for measuring torque of the pump 10.
The dc regulated power supply 51 is used to supply power to equipment that provides a regulated dc voltage. The ups 52 is used for emergency power supply in case of mains abnormality.
Based on the pump hydraulic test system that provides above, the utility model also provides a pump hydraulic test method, it includes following step:
s1, arranging a pump hydraulic test system; the pump hydraulic test system comprises a high-voltage electric starting subsystem 1, a motor driving subsystem 2, a high-voltage storage tank subsystem 3, a process pipeline subsystem 4 and a data acquisition subsystem 5, wherein the process pipeline subsystem 4 comprises a purified water conveying pipeline subsystem 41, a pressurization pipeline subsystem 42 and a vacuum exhaust pipeline subsystem 43;
the high-voltage power-on subsystem 1 is connected with the motor driving subsystem 2 and is used for providing power for the motor driving subsystem 2 and enabling the motor driving subsystem 2 to realize adjustable rotating speed;
the motor drive subsystem 2 is used for providing a rotary driving force for the pump 10;
the high-pressure storage tank subsystem 3 is used for providing stable and sufficient water source and adjusting the pressure of purified water at the inlet of the pump 10;
the process pipeline subsystem 4 is used for conveying and discharging various kinds of purified water;
the data acquisition subsystem 5 is used for acquiring parameters such as pressure, temperature, flow, rotating speed, torque and input power of the pump 10 in real time.
S2, performing a hydraulic performance test on the pump 10, comprising:
and S21, enabling the purified water to enter a purified water conveying pipeline.
S22, pressurization piping subsystem 42 pressurizes the purified water at the inlet of pump 10.
And S23, changing the output rotating speed of the frequency-conversion three-phase asynchronous motor 21 in the motor driving subsystem 2.
And S24, acquiring parameters such as pressure, temperature, flow, torque and input power of the pump 10 at different rotating speeds through the data acquisition subsystem 5.
And S25, keeping the rotating speed of the pump 10 unchanged, changing the hydraulic characteristics of the purified water conveying pipeline at the outlet of the pump 10, and obtaining data such as different pressures, flow rates, torques and input powers of the pump 10 at constant rotating speed.
S3, performing cavitation performance test on the pump 10, and changing the pressure of the inlet pipeline of the pump 10 through the vacuum exhaust pipeline subsystem 43.
The following description will take a certain type of oxygen pump 10 as an example to describe the specific operation process of the oxygen pump 10 under various working conditions.
Before the test, the oxygen pump 10 is installed on the pump frame 25 and fastened, and the coaxiality and the planeness of the shaft of the pump 10 of the oxygen pump 10 and the output shaft of the variable frequency three-phase asynchronous motor 21 in the motor driving subsystem 2 are calibrated and rechecked. Specifically, the coaxiality is required to be less than or equal to 0.05mm, and the flatness is required to be less than or equal to 0.03 mm.
A high-speed coupling 24 and a torque meter 57 are installed.
The pressurization solenoid valve 422 in the pressurization piping subsystem 42 is opened to pressurize the high-pressure tank 31.
And opening an electric water outlet gate valve 411 connected with the water outlet of the high-pressure storage tank 31 and an electric water return gate valve 417 connected with the water return port, so that the purified water enters the purified water conveying pipeline.
And opening the first high-point exhaust valve 418 and the second high-point exhaust valve 419 to fill the purified water conveying pipeline with water.
When a hydraulic test is carried out, the variable-frequency three-phase asynchronous motor 21 drives the oxygen pump 10 to operate sequentially through the low-speed coupler 22, the speed-increasing gearbox 23 and the high-speed coupler 24, the rotating speed of the oxygen pump 10 is adjusted to a required value by adjusting the output of the frequency converter 12, and a working medium of the oxygen pump 10 flows out of the high-pressure storage tank 31 and flows into the oxygen pump 10 along the purified water conveying pipeline subsystem 41. The pressure at the inlet of the oxygen pump 10 is provided by the level of purified water and the pressure build-up in the high pressure tank 31. The purified water flows out from the outlet thereof by the centrifugal action of the oxygen pump 10 and is returned to the high-pressure tank 31 through the purified water delivery line.
The flow rate of the oxygen pump 10 is gradually increased from 80% of the rated flow rate to 120% of the rated flow rate by changing the opening degree of the electric control valve 415 at the required rotation speed, at which the pressure, temperature and flow rate of the pure water at the inlet and outlet of the oxygen pump 10, and the torque and input power of the shaft of the pump 10 are recorded.
The vacuum exhaust piping subsystem 43 is used to vary the pressure in the inlet piping of the oxygen pump 10 during cavitation performance testing. An electric control valve 415 on the purified water delivery line near the outlet of the oxygen pump 10 is used to consume the pressure head of the oxygen pump 10. The pump 10 is subjected to a cavitation performance test at a certain rotation speed, the inlet pressure of the pump 10 is reduced until a cavitation fracture point, a gas phase appears on the blades of the pump 10, cavitation separation is formed, and the outlet pressure and the flow rate of the pump 10 are rapidly reduced.
The compressed air supplied by the pressurized air source enters the high-pressure storage tank 31 through the pressurizing electromagnetic valve 422, and is pressurized for the purified water at the inlet of the oxygen pump 10. The pressurized gas in the high-pressure tank 31 is discharged through the high-pressure tank discharge solenoid valve 35.
According to the requirements of the test implementation rules on the rotating speed and the working conditions, the output rotating speed of the frequency conversion three-phase asynchronous motor 21 in the motor driving subsystem 2 is changed by adjusting the output of the frequency converter 12 in the high-voltage electric starting subsystem 1.
The inlet pressure of the pump 10 at different speeds is obtained by the pump inlet pressure sensor 51 and the outlet pressure of the pump 10 at different speeds is obtained by the pump outlet pressure sensor 52. The temperature of the purified water flowing into the inlet of the pump 10 is acquired by the pump inlet water temperature sensor 53, and the temperature of the purified water flowing out of the outlet of the pump 10 is acquired by the pump outlet water temperature sensor 54. The inlet flow of the pump 10 at different speeds is obtained by the pump inlet flow meter 55 and the outlet flow of the pump 10 at different speeds is obtained by the pump outlet flow meter 56.
The torque and the input power of the oxygen pump 10 at different rotating speeds are obtained through the torque meter 57.
And obtaining the effective power and efficiency of the oxygen pump at different rotating speeds through real-time calculation.
The rotating speed of the oxygen pump 10 is kept unchanged, the hydraulic characteristic of the pure water conveying pipeline at the outlet of the oxygen pump 10, namely the opening degree of the electric regulating valve 415 is changed for carrying out a test, and data such as different pressures, flow rates, torques, powers and the like of the oxygen pump 10 at a constant rotating speed are obtained.
Adopt the utility model discloses carry out the multiple pump 10 hydraulic performance test and cavitation test, excellent in use effect satisfies the designing requirement, can provide accurate test data support for the performance judgement and the product improvement design of pump 10. The utility model has stable operation, reasonable structure and strong stability in a high-speed state; the measured values obtained at high rotating speed are accurate and have high confidence coefficient.
The utility model discloses a performance test of pump 10 provides a rotational speed and has reached 10000 rs, and power is 300kW ~ 3000 kW's hydraulic test system, and this system provides rotary power for pump 10, makes the rotational speed of pump 10 can change in great range, can realize the torque measurement under the high rotational speed simultaneously. The utility model discloses a poisonous, flammable and explosive actual fluid medium is replaced to the pure water, and the security is good.
The foregoing is only an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present invention should fall within the protection scope of the present invention.
Claims (10)
1. A pump hydraulic test system is characterized by comprising a high-voltage electric starting subsystem, a motor driving subsystem, a high-voltage storage tank subsystem, a process pipeline subsystem and a data acquisition subsystem;
the high-voltage power-on subsystem is connected with the motor driving subsystem and is used for providing power for the motor driving subsystem and enabling the motor driving subsystem to realize adjustable rotating speed;
the motor driving subsystem is used for providing a rotary driving force for the pump; the pump is connected with the high-pressure storage tank subsystem through the process pipeline subsystem;
the high-pressure storage tank subsystem is used for providing a water source and adjusting the pressure of purified water at the pump inlet;
the process pipeline subsystem is used for realizing the transportation and the discharge of purified water and the transportation and the discharge of gas;
the data acquisition subsystem is used for acquiring the pressure, the temperature, the flow, the rotating speed, the torque and the input power of the pump in real time.
2. The pump hydraulics testing system of claim 1, wherein the high voltage electrical starter subsystem includes a 10kV high voltage power supply, a frequency converter, and a switch cabinet; the 10kV high-voltage power supply is connected with a frequency converter, the frequency converter is connected with a switching cabinet, and the switching cabinet is connected with a motor driving subsystem.
3. The pump hydraulics test system of claim 1 or 2, wherein the motor drive subsystem includes a variable frequency three-phase asynchronous motor, a low speed coupling, a step-up gear box, and a high speed coupling; the variable-frequency three-phase asynchronous motor is connected with the input end of the low-speed coupler, the output end of the low-speed coupler is connected with the input end of the speed-increasing gear box, and the output end of the speed-increasing gear box is connected with the input end of the pump.
4. The pump hydraulic test system according to claim 3, wherein the high-pressure tank subsystem comprises a high-pressure tank and a water adding pipeline, a purified water source is connected with a water inlet of the high-pressure tank through the water adding pipeline, and a water adding electromagnetic valve and a water adding hand valve are arranged on the water adding pipeline;
the water adding solenoid valve and the water adding hand valve are both used for opening or closing the water adding pipeline.
5. The pump hydraulics testing system of claim 4, wherein the process piping subsystem includes a pure water delivery piping subsystem, a pressurization piping subsystem, and a vacuum exhaust piping subsystem;
the purified water conveying pipeline subsystem is used for conveying purified water for the pump, and the pressurization pipeline subsystem is used for providing pressurization gas for the pump hydraulic test system; the vacuum exhaust pipeline subsystem is used for changing the pressure of the pump inlet pipeline when the pump performs a cavitation performance test.
6. The pump hydraulic test system of claim 5, wherein the purified water delivery pipeline subsystem comprises an electric water outlet gate valve, a pump inlet filter, a metal corrugated hose, a metal corrugated pipe, an electric regulating valve, a pump outlet filter and a return water electric gate valve;
the water outlet of the high-pressure storage tank is connected with the inlet of the pump sequentially through the water outlet electric gate valve, the pump inlet filter and the metal corrugated hose, and the outlet of the pump is connected with the water return port of the high-pressure storage tank sequentially through the metal corrugated pipe, the electric regulating valve, the pump outlet filter and the water return electric gate valve.
7. The pump hydraulics testing system of claim 5, wherein the booster line subsystem includes a booster line and a booster solenoid valve; the pressurization gas source is connected with the gas inlet of the high-pressure storage tank through the pressurization pipeline, and the pressurization pipeline is provided with a pressurization electromagnetic valve which is used for opening or closing the pressurization pipeline.
8. The pump hydraulics testing system of claim 5, wherein the vacuum exhaust piping subsystem includes a vacuum pump and a vacuum exhaust solenoid valve; the vacuum pump is connected with a high-pressure storage tank exhaust pipeline through a vacuum exhaust pipeline, the vacuum exhaust pipeline is provided with a vacuum exhaust electromagnetic valve, and the vacuum exhaust electromagnetic valve is used for opening or closing the vacuum exhaust pipeline.
9. The pump hydraulic test system of claim 6, wherein the data acquisition subsystem includes a pump inlet pressure sensor, a pump outlet pressure sensor, a pump inlet water temperature sensor, a pump outlet water temperature sensor, a pump inlet flow meter, a pump outlet flow meter, and a torque meter;
the pump inlet pressure sensor is arranged at a position 2 d-5 d away from the inlet of the pump, and the pump outlet pressure sensor is arranged at a position 2 d-5 d away from the outlet of the pump, wherein d represents the diameter of the purified water conveying pipeline;
the pump inlet water temperature sensor is positioned on the purified water conveying pipeline close to the water outlet of the high-pressure storage tank and is arranged between the water outlet electric gate valve and the pump inlet filter; the water outlet temperature sensor is positioned on the purified water conveying pipeline close to the water return port of the high-pressure storage tank and is arranged between the pump outlet filter and the water return electric gate valve;
the pump inlet flowmeter is positioned on the purified water conveying pipeline close to the pump inlet and is arranged between the pump inlet filter and the metal corrugated hose; the pump outlet flow meter is positioned on the purified water conveying pipeline close to the pump outlet and is arranged between the electric regulating valve and the pump outlet filter;
the torque meter is arranged between the speed-increasing gear box and the pump, the input end of the torque meter is connected with the output end of the speed-increasing gear box, and the output end of the torque meter is connected with the input end of the pump.
10. The pump hydraulics test system of claim 6, wherein a first high point vent valve is also provided between the pump inlet filter and the metal bellows, on the plain water delivery line; a second high-point exhaust valve is arranged between the pump outlet filter and the backwater electric gate valve;
first high point discharge valve and second high point discharge valve all are used for exhausting pure water conveying pipeline.
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| CN201920940967.6U CN210343747U (en) | 2019-06-21 | 2019-06-21 | Pump hydraulic test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296087A (en) * | 2019-06-21 | 2019-10-01 | 蓝箭航天技术有限公司 | Pump power pilot system and test method |
| CN114352549A (en) * | 2022-01-05 | 2022-04-15 | 西安航天动力研究所 | Motor-driven hydraulic test device for pre-pressed turbine pump |
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2019
- 2019-06-21 CN CN201920940967.6U patent/CN210343747U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296087A (en) * | 2019-06-21 | 2019-10-01 | 蓝箭航天技术有限公司 | Pump power pilot system and test method |
| CN114352549A (en) * | 2022-01-05 | 2022-04-15 | 西安航天动力研究所 | Motor-driven hydraulic test device for pre-pressed turbine pump |
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