CN219865727U - Hydraulic system for performance test of centrifugal pump - Google Patents
Hydraulic system for performance test of centrifugal pump Download PDFInfo
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- CN219865727U CN219865727U CN202320987167.6U CN202320987167U CN219865727U CN 219865727 U CN219865727 U CN 219865727U CN 202320987167 U CN202320987167 U CN 202320987167U CN 219865727 U CN219865727 U CN 219865727U
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- 238000011056 performance test Methods 0.000 title abstract description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 35
- 238000012360 testing method Methods 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003637 basic solution Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
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Abstract
The utility model provides a hydraulic system for centrifugal pump performance test, including oil tank (1), hydraulic pump (2) with the oil tank intercommunication, overflow valve (3) with the hydraulic pump intercommunication, reversing valve (4) with the hydraulic motor (5) of hydraulic pump intercommunication, closed reservoir (6), be connected with the hydraulic motor transmission await measuring centrifugal pump (7), vacuum pump (8) with closed reservoir (6) intercommunication, air-vent valve (9), detect reversing valve (4) feed-water pressure's first pressure sensor (10), detect rotational speed table (11) of awaiting measuring centrifugal pump (7) rotational speed, detect second pressure sensor (12) of awaiting measuring centrifugal pump (7) inlet pressure, detect third pressure sensor (13) of awaiting measuring centrifugal pump (7) outlet pressure, detect flowmeter (14) of awaiting measuring centrifugal pump (7) outlet flow, governing valve (15), detect vacuum gauge (16) of closed reservoir (6) vacuum.
Description
Technical Field
The utility model relates to the technical field of performance test of centrifugal pumps, in particular to a hydraulic system for performance test of a centrifugal pump.
Background
Centrifugal pumps are very widely used and are almost an indispensable device in a flow system. The centrifugal pump has the outstanding advantages of small volume, simple operation and use and long service life.
After the centrifugal pump is started, the pump shaft drives the impeller to perform high-speed rotation together, liquid filled between the blades in advance is forced to rotate, and the liquid moves radially from the center of the impeller to the periphery under the action of inertial centrifugal force. The liquid medium will acquire energy during the movement through the impeller, resulting in an increase in static pressure energy and an increase in flow rate. When the liquid leaves the impeller and enters the pump shell, the flow passage in the shell gradually expands to decelerate, part of kinetic energy is converted into static pressure energy, and finally the static pressure energy flows into the discharge pipeline along the tangential direction. When the liquid is thrown from the center of the impeller to the periphery, a low pressure area is formed in the center of the impeller, and the liquid is sucked into the center of the impeller under the action of the total potential energy difference between the liquid level of the storage tank and the center of the impeller. By virtue of the continuous operation of the impeller, liquid is continuously sucked in and discharged. The mechanical energy obtained by the liquid in the centrifugal pump is finally manifested as an increase in static pressure energy.
Certain materials conveyed by the centrifugal pump have great viscosity characteristic difference at different temperatures, the change of parameters such as viscosity and the like has important influence on the operation of the centrifugal pump, and the measurement of the self-priming capability and the like of the centrifugal pump under various working conditions has important significance for guaranteeing the normal operation of the centrifugal pump under the corresponding working conditions, but corresponding technical reports are not seen at present, and a low-cost and reliable testing technology is lacked. Therefore, developing a technique for testing performance of a centrifugal pump is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The present utility model is directed to solving at least one of the deficiencies of the prior art. Therefore, the technical problem solved by the utility model is to provide the hydraulic system for testing the performance of the centrifugal pump, which can simulate the running conditions of the centrifugal pump to be tested under different rotating speeds and liquid suction working conditions, detect corresponding performance parameters and conveniently detect the performances such as self-priming capability and the like of the centrifugal pump under different working conditions.
In order to solve the technical problems, the hydraulic system for testing the performance of the centrifugal pump comprises an oil tank, a hydraulic pump with an oil inlet communicated with the oil tank, an overflow valve with an oil inlet communicated with an oil outlet of the hydraulic pump, a reversing valve with an oil inlet communicated with an oil outlet of the hydraulic pump, a hydraulic motor with an oil inlet communicated with one working oil port of the reversing valve, a closed liquid storage tank, a centrifugal pump to be tested with an inlet communicated with a liquid area of the closed liquid storage tank through a pipeline and in transmission connection with the hydraulic motor through a coupling, a vacuum pump communicated with a liquid-free area of the closed liquid storage tank through a pipeline, a first pressure sensor for detecting the pressure of the reversing valve, a tachometer for detecting the rotational speed of the hydraulic motor or the centrifugal pump to be tested, a second pressure sensor for detecting the inlet pressure of the centrifugal pump to be tested, a third pressure sensor for detecting the outlet pressure of the centrifugal pump to be tested, a flowmeter for detecting the flow of the centrifugal pump to be tested, a regulating valve for regulating the outlet pressure and the flow of the centrifugal pump to be tested, and a vacuum regulating valve for detecting the vacuum degree of the closed liquid storage tank.
As a further improved technical scheme, the hydraulic system for testing the performance of the centrifugal pump is provided with the first filter on the oil return pipe of the hydraulic motor, and the second filter on the return pipe of the centrifugal pump to be tested.
As a further improved technical scheme, the hydraulic system for testing the performance of the centrifugal pump provided by the utility model is further provided with an air filter connected with the oil tank.
According to the technical scheme provided by the utility model, the running conditions of the centrifugal pump to be tested under different rotating speeds and liquid suction working conditions can be simulated, corresponding performance parameters are detected, the rotating speed, flow, pressure and other parameters of the centrifugal pump to be tested can be conveniently adjusted in the detection process, and the self-priming capability of the centrifugal pump to be tested can be rapidly and conveniently tested by adjusting the vacuum degree of the liquid-free area of the closed liquid storage tank.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
fig. 1 is a schematic structural diagram of a hydraulic system for testing performance of a centrifugal pump according to an embodiment.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
The hydraulic system for testing the performance of the centrifugal pump shown in fig. 1 comprises an oil tank 1, a hydraulic pump 2 with an oil inlet communicated with the oil tank 1, an overflow valve 3 with an oil inlet communicated with an oil outlet of the hydraulic pump 2, a reversing valve 4 with an oil inlet communicated with an oil outlet of the hydraulic pump 2, a hydraulic motor 5 with an oil inlet communicated with one working oil port of the reversing valve 4, a closed type liquid storage tank 6, a centrifugal pump 7 to be tested with an inlet communicated with a liquid area of the closed type liquid storage tank 6 through a pipeline and in transmission connection with the hydraulic motor 5 through a coupling, a vacuum pump 8 communicated with a liquid-free area of the closed type liquid storage tank 6 through a pipeline, a pressure regulating valve 9 arranged on a pipeline between the liquid storage tank 6 and the vacuum pump 8, a first pressure sensor 10 for detecting the inlet pressure of the reversing valve 4, a tachometer 11 for detecting the rotating speed of the hydraulic motor 5 or the centrifugal pump 7 to be tested, a third pressure sensor 13 for detecting the outlet pressure of the centrifugal pump 7 to be tested, a flow meter 14 for detecting the outlet pressure of the centrifugal pump 7 to be tested, a vacuum flow meter 14 for detecting the outlet of the centrifugal pump to be tested, a vacuum flow meter for regulating valve for regulating the pressure meter 15, and a vacuum flow meter for regulating the vacuum pump to be tested 6.
Working principle: the hydraulic pump 2 provides a pressure oil source for the hydraulic motor 5, and the overflow valve 3 limits the highest pressure of the system, so that the safety protection function is realized. When the electromagnetic directional valve 4 is powered off, hydraulic oil pumped by the hydraulic pump 2 directly returns to the oil tank 1 through the directional valve 4, working pressure cannot be built by the system, the hydraulic motor 5 does not rotate, when the electromagnetic directional valve 4 is powered on, the hydraulic oil enters the hydraulic motor 5 to drive the hydraulic motor 5 to operate, the first pressure sensor 10 detects the working pressure of the hydraulic oil input into the hydraulic motor 5 in real time, and the rotating speed of the hydraulic motor 5 can be adjusted by adjusting the pressure and flow of the hydraulic oil entering the hydraulic motor 5, so that the rotating speed of the centrifugal pump 7 to be tested in the test process is adjusted. The pressure and flow of the hydraulic oil entering the hydraulic motor 5 can be adjusted by adjusting the overflow pressure setting parameter of the overflow valve 3, the rotating speed of the variable frequency motor of the hydraulic pump 2, a throttle valve and the like. The closed liquid storage tank 6 is of a closed structure, in the testing process, the vacuum pump 8 can vacuumize a liquid-free area of the closed liquid storage tank 6, the vacuum degree in the closed liquid storage tank 6 is regulated through the pressure regulating valve 9, and the self-priming capability of the centrifugal pump 7 to be tested under a certain working condition under the atmospheric pressure can be tested through regulating the vacuum degree of the liquid-free area of the closed liquid storage tank 6. The centrifugal pump 7 to be tested is in transmission connection with the hydraulic motor 5 through a coupling, the output flow of the centrifugal pump 7 to be tested can be adjusted through the adjusting valve 15, and a loading test is carried out, the rotating speed of the centrifugal pump 7 to be tested can be detected through the rotating speed meter 11, the inlet pressure of the centrifugal pump 7 to be tested can be detected through the second pressure sensor 12, the vacuum degree in the closed type liquid storage tank 6 can be detected through the vacuum pressure meter 16, so that the parameter of self-analysis capacity is obtained, the outlet pressure of the centrifugal pump 7 to be tested can be detected through the third pressure sensor 13, so that the parameter of the stroke of the analysis pump is obtained, the outlet flow of the centrifugal pump 7 to be tested can be detected through the flowmeter 14, and thus the parameter of the flow of the centrifugal pump 7 to be tested is obtained. In the test process, the system can detect working states such as working pressure, flow and the like of the system in real time.
According to the technical scheme provided by the utility model, the running conditions of the centrifugal pump 7 to be tested under different rotating speeds and liquid suction working conditions can be simulated, corresponding performance parameters are detected, the rotating speed, flow, pressure and other parameters of the centrifugal pump 7 to be tested are conveniently adjusted in the detection process, and the self-priming capability of the centrifugal pump 7 to be tested can be rapidly and conveniently tested by adjusting the vacuum degree of the liquid-free area of the closed liquid storage tank 6.
As one embodiment, on the basis of the basic scheme, the hydraulic system for testing the performance of the centrifugal pump provided by the utility model is characterized in that a first filter 17 is arranged on a return pipe of the hydraulic motor 5, and a second filter 18 is arranged on a return pipe of the centrifugal pump 7 to be tested.
As an example, on the basis of the basic solution described above, the hydraulic system for testing the performance of a centrifugal pump according to the utility model is provided with an air filter 19 connected to the tank 1.
The first filter 17, the second filter 18, and the air filter 19 are hydraulic system auxiliary elements.
The present utility model is not limited to the above preferred embodiments, but various changes and modifications can be made within the spirit of the present utility model as defined in the appended claims and description, and the same technical problems can be solved and the intended technical effects can be obtained, so that it is not repeated. All modifications which may occur to those skilled in the art from the present disclosure are intended to be included within the scope of the utility model as defined in the appended claims.
Claims (3)
1. The hydraulic system for testing the performance of the centrifugal pump is characterized by comprising an oil tank (1), a hydraulic pump (2) with an oil inlet communicated with the oil tank (1), an overflow valve (3) with an oil inlet communicated with an oil outlet of the hydraulic pump (2), a reversing valve (4) with an oil inlet communicated with the oil outlet of the hydraulic pump (2), a hydraulic motor (5) with an oil inlet communicated with one working oil port of the reversing valve (4), a closed liquid storage tank (6), a centrifugal pump (7) with an inlet communicated with a liquid area of the closed liquid storage tank (6) through a pipeline and in transmission connection with the hydraulic motor (5) through a coupling, a vacuum pump (8) in transmission connection with a liquid-free area of the closed liquid storage tank (6) through a pipeline, a pressure regulating valve (9) arranged on the pipeline between the closed liquid storage tank (6) and the vacuum pump (8), a first pressure sensor (10) for detecting the inlet pressure of the reversing valve (4), a rotating speed meter (11) for detecting the rotating speed of the hydraulic motor (5) or the centrifugal pump (7), a second pressure sensor (12) to be tested, a third pressure sensor (13) to be tested for detecting the pressure of the centrifugal pump, and a third pressure sensor (13) to be tested, and a regulating valve (15) for regulating the outlet pressure and flow of the centrifugal pump (7) to be tested and a vacuum pressure gauge (16) for detecting the vacuum degree of the closed liquid storage tank (6).
2. Hydraulic system for testing the performance of a centrifugal pump according to claim 1, characterized in that the return line of the hydraulic motor (5) is provided with a first filter (17) and the return line of the centrifugal pump (7) to be tested is provided with a second filter (18).
3. Hydraulic system for centrifugal pump performance testing according to claim 1, characterized by an air filter (19) connected to the tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320987167.6U CN219865727U (en) | 2023-04-27 | 2023-04-27 | Hydraulic system for performance test of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320987167.6U CN219865727U (en) | 2023-04-27 | 2023-04-27 | Hydraulic system for performance test of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219865727U true CN219865727U (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320987167.6U Active CN219865727U (en) | 2023-04-27 | 2023-04-27 | Hydraulic system for performance test of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219865727U (en) |
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2023
- 2023-04-27 CN CN202320987167.6U patent/CN219865727U/en active Active
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