CN214837050U - Performance test system of electro-hydraulic proportional control axial plunger pump - Google Patents
Performance test system of electro-hydraulic proportional control axial plunger pump Download PDFInfo
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- CN214837050U CN214837050U CN202120042533.1U CN202120042533U CN214837050U CN 214837050 U CN214837050 U CN 214837050U CN 202120042533 U CN202120042533 U CN 202120042533U CN 214837050 U CN214837050 U CN 214837050U
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Abstract
The utility model provides a performance test system of an electro-hydraulic proportional control axial plunger pump, which comprises a pump body, an electro-hydraulic proportional electromagnet and a control element; the testing system comprises an oil tank and a testing loop connected with the oil tank, wherein the testing loop comprises a plunger pump, a one-way valve, a pressure sensor I, a flow sensor I and a cooler which are sequentially connected through a pipeline; the plunger pump is driven by the first motor, and a rotating speed and torque sensor is connected between the plunger pump and the first motor. The utility model provides an electricity liquid proportional control axial plunger pump capability test system for the collection of pressure, flow data is accomplished in the test of the static characteristic and the dynamic characteristic of electricity liquid proportional control axial plunger pump. The testing device is strong in anti-interference capability and stable and reliable in performance, and can effectively test the performance of the electro-hydraulic proportional axial plunger pump.
Description
Technical Field
The utility model relates to a detect technical field, more specifically relates to a performance test system of electro-hydraulic proportional control axial plunger pump.
Background
The hydraulic transmission has the advantages of compact structure, large power-weight ratio, easy acquisition of larger driving force and torque, realization of stepless speed regulation in a large range, easy realization of automation, and wide application in the fields of machine manufacturing, engineering machinery and the like. The hydraulic pump is the power element of the hydraulic system. The electro-hydraulic proportional control axial plunger pump is widely used in injection molding machinery, and the performance of the electro-hydraulic proportional control axial plunger pump determines the working performance of a hydraulic system. Therefore, the design of the performance test system for the electro-hydraulic proportional control axial plunger pump is of great significance.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electricity liquid proportional control axial plunger pump capability test system for the collection of pressure, flow data is accomplished in the test of the static characteristic and the dynamic characteristic of electricity liquid proportional control axial plunger pump.
The above object of the present invention is achieved by the following technical solutions:
a performance test system of an electro-hydraulic proportional control axial plunger pump comprises a pump body, an electro-hydraulic proportional electromagnet and a control element; the testing system comprises an oil tank and a testing loop connected with the oil tank, wherein the testing loop comprises a plunger pump, a one-way valve, a pressure sensor I, a flow sensor I and a cooler which are sequentially connected through a pipeline; the plunger pump is driven by the first motor, and a rotating speed and torque sensor is connected between the plunger pump and the first motor.
Testing arrangement mainly be used for testing pressure value and the flow value of electric liquid proportional control axial plunger pump (hereinafter for short test pump).
When the test pump is used for testing static characteristics, the input end of the electro-hydraulic proportional electromagnet is connected with a signal generator device, a direct-current signal is input to the electro-hydraulic proportional electromagnet through the signal generator device, the control and regulation of the current of the electromagnet from high to low and from low to high are realized, and the static pressure and flow value of the test pump are collected from the pressure sensor I and the flow sensor I.
When the dynamic characteristic of the test pump is tested, different given step signals are generated by the signal generator and input to the electro-magnet of the feed-liquid proportion, and the dynamic pressure and flow values of the test pump are collected from the pressure sensor I and the flow sensor I.
The oil tank is provided with a liquid level control relay, an electric contact thermometer, an air filter and an electric heater; an oil discharge valve is arranged at the bottom of the oil tank. The oil temperature in the test loop can be monitored in real time through the electric contact thermometer, the electric heater and the cooler can monitor the oil temperature in the oil tank, and the oil temperature can be automatically adjusted to meet the relevant requirements of a hydraulic pump performance test experiment.
And a pilot overflow valve is connected between the one-way valve and the first flow sensor. The pilot operated overflow valve is used for simulating the load, and the size of the load is adjusted by adjusting the opening pressure of the overflow valve.
The test loop is connected with a throttling loading branch in parallel, and the throttling loading branch is connected with a high-pressure ball valve, a throttle valve, an electro-hydraulic reversing valve and a flow sensor II in sequence; the throttling loading branch is connected to two sides of the first flow sensor.
The flow sensor has the following functions: and detecting the flow value of the oil passing through the throttling loading branch.
The energy accumulator is connected to the test loop in parallel, and a pressure gauge is connected to an inlet of the energy accumulator. The accumulator is arranged in the testing device, so that pressure pulsation in the hydraulic system can be reduced.
The pressure sensor was an HDA3700 series pressure sensor produced by HYDAC, germany. The pressure sensor is an HDA3700 series pressure sensor produced by Germany HYDAC, has the characteristic of strong anti-interference capability, can achieve the test response time of 0.5ms, and can meet the measurement requirements of the dynamic change process of the control pressure and the control cavity pressure of the variable mechanism.
The first flow sensor adopts a non-contact displacement sensor SDVB/G/N. The requirements of the experimental system on sampling frequency and testing precision can be met by adopting the SDVB/G/N.
The auxiliary loop is connected with the oil tank and comprises an oil filter I, an oil pump and an oil filter II which are sequentially connected through pipelines; the oil pump is driven by the second motor. The auxiliary loop has a filtering effect on oil in the oil tank so as to ensure the normal operation of the experiment. The second motor and the oil pump form a power supply source of the auxiliary loop.
Overflow valves are connected in parallel at two ends of the oil filter II. The overflow valve can realize overflow when the oil filter II is prevented from being blocked.
And a second pressure sensor is connected to the inlet of the cooler.
The oil pump is a gear pump, and the first motor and the second motor are both alternating current motors.
The utility model discloses following beneficial effect has:
the performance test system of the electro-hydraulic proportional control axial plunger pump is provided with a test loop communicated with an oil tank, and can test the static characteristic and the dynamic characteristic of the test pump; in order to further simulate the actual working condition, a liquid level control relay, an electric contact thermometer, an air filter and an electric heater are arranged on the oil tank, the liquid level and the oil temperature in the oil tank can be controlled, and the liquid level control relay, the electric contact thermometer, the air filter and the electric heater are used for testing the performance of the pump under the conditions of different liquid levels and oil temperatures. And a throttling loading branch is connected in parallel on the test loop to control the liquid flow in the pipeline, so as to test the performance of the test pump under different flow conditions.
The testing system is characterized in that the testing loop is connected with an energy accumulator in parallel, the first pressure sensor adopts an HDA3700 series pressure sensor produced by Germany HYDAC, and the first flow sensor adopts a non-contact displacement sensor SDVB/G/N, so that the testing system is high in anti-interference capability, stable and reliable in performance and capable of effectively testing the performance of the electro-hydraulic proportional axial plunger pump.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a performance testing system of an electro-hydraulic proportional control axial plunger pump.
The device comprises an oil tank 1, a liquid level control relay 2, an electric contact thermometer 3, an air filter 4, an electric heater 5, an energy accumulator 6, a throttle valve 7, an electro-hydraulic reversing valve 8, a pressure gauge 9, a pressure sensor I10, a high-pressure ball valve 11, a pressure sensor II 12, a pilot-operated overflow valve 13, a flow sensor I14, a cooler 15, a check valve 16, a pump body 17, a speed and torque sensor 18, a motor I19, a motor II 20, an oil pump 21, an oil filter I22, an oil filter II 23, an overflow valve 24, an oil discharge valve 25, an electro-hydraulic proportional electromagnet 26 and a flow sensor II 27.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example 1
The embodiment provides a performance test system of an electro-hydraulic proportional control axial plunger pump, wherein the electro-hydraulic proportional control axial plunger pump comprises a pump body 17, an electro-hydraulic proportional electromagnet 26 and a control element; the testing system comprises an oil tank 1 and a testing loop connected with the oil tank 1, wherein the testing loop comprises a plunger pump, a one-way valve 16, a pressure sensor I10, a flow sensor I14 and a cooler 15 which are sequentially connected through a pipeline; the plunger pump is driven by a first motor 19, and a rotating speed and torque sensor 18 is connected between the plunger pump and the first motor 19.
The oil tank 1 is provided with a liquid level control relay 2, an electric contact thermometer 3, an air filter 4 and an electric heater 5; an oil drain valve 25 is installed at the bottom of the oil tank 1.
A pilot-operated overflow valve 13 is connected between the check valve 16 and the first flow sensor 14.
A throttling loading branch is connected in parallel to the test loop, and a high-pressure ball valve 11, a throttling valve 7, an electro-hydraulic reversing valve 8 and a flow sensor II 27 are sequentially connected to the throttling loading branch; the throttling loading branch is connected to two sides of the first flow sensor 14.
The testing loop is connected with an energy accumulator 6 in parallel, and an inlet of the energy accumulator 6 is connected with a pressure gauge 9.
The auxiliary loop is connected with the oil tank 1 and comprises a first oil filter 22, an oil pump 21 and a second oil filter 23 which are sequentially connected through pipelines; the oil pump 21 is driven by the second motor 20.
And a second pressure sensor 12 is connected to the inlet of the cooler 15.
The oil pump 21 is a gear pump, and the first motor 19 and the second motor 20 are both alternating current motors.
When the test pump is used for static characteristic test, a signal generator device is connected to the input end of the electro-hydraulic proportional electromagnet 26, direct current signals are input to the electro-hydraulic proportional electromagnet 26 through the signal generator, control and regulation of the current of the electro-hydraulic proportional electromagnet from high to low and from low to high are achieved, and static pressure and flow values of the electro-hydraulic proportional control axial plunger pump are collected from the pressure sensor I10 and the flow sensor I14.
When the dynamic characteristic of the test pump is tested, different given step signals are generated by the signal generator and input to the electro-hydraulic proportional electromagnet 26, and dynamic pressure and flow values of the electro-hydraulic proportional control axial plunger pump are collected from the pressure sensor I10 and the flow sensor I14.
The test loop is a main oil circuit of the test system, the test pump 17 is driven by the first motor 19, and the input torque and the rotating speed of the test pump 17 are measured by adopting a torque rotating speed sensor 18 between the first motor 19 and the test pump 17. The pilot relief valve 13 is used for load simulation. The electro-hydraulic directional valve 8 and the throttle valve 7 are used to provide throttling loading to the system. And a pressure sensor I10 is arranged at the outlet of the test pump 17 to measure the pressure. A first flow sensor 14 is mounted at the outlet of the test pump 17 for displaying and recording the output flow of the test pump 17. The pressure sensor is an HDA3700 series pressure sensor produced by Germany HYDAC, has the characteristic of strong anti-interference capability, can achieve the test response time of 0.5ms, and can meet the measurement requirements of the dynamic change process of the control pressure and the control cavity pressure of the variable mechanism. For the measurement of average flow in different pipelines, the flow sensor can meet the requirements of an experimental system on sampling frequency and test precision by adopting a non-contact displacement sensor SDVB/G/N. The oil temperature in the test loop can be monitored in real time through the electric contact thermometer 3, the electric heater 5 and the cooler 15 can monitor the oil temperature in the oil tank, and the oil temperature can be automatically adjusted to meet the relevant requirements of a hydraulic pump performance test experiment.
The auxiliary loop mainly has a filtering effect on oil in the oil tank so as to ensure the normal operation of an experiment. The second motor 20 and the oil pump 21 form a power supply source of an auxiliary loop, and the overflow valve 24 is mainly used for realizing overflow through the overflow valve 24 when the oil filter 23 is prevented from being blocked.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A performance test system of an electro-hydraulic proportional control axial plunger pump comprises a pump body, an electro-hydraulic proportional electromagnet and a control element; the testing system is characterized by comprising an oil tank and a testing loop connected with the oil tank, wherein the testing loop comprises a plunger pump, a one-way valve, a first pressure sensor, a first flow sensor and a cooler which are sequentially connected through pipelines; the plunger pump is driven by the first motor, and a rotating speed and torque sensor is connected between the plunger pump and the first motor.
2. The performance testing system of the electro-hydraulic proportional control axial plunger pump as claimed in claim 1, wherein a liquid level control relay, an electric contact thermometer, an air filter and an electric heater are mounted on the oil tank; an oil discharge valve is arranged at the bottom of the oil tank.
3. The system for testing the performance of the electro-hydraulic proportional control axial plunger pump according to claim 1, wherein a pilot operated overflow valve is connected between the check valve and the first flow sensor.
4. The performance test system of the electro-hydraulic proportional control axial plunger pump according to claim 1, wherein a throttling loading branch is connected in parallel to the test loop, and a high-pressure ball valve, a throttle valve, an electro-hydraulic reversing valve and a flow sensor II are sequentially connected to the throttling loading branch; the throttling loading branch is connected to two sides of the first flow sensor.
5. The system for testing the performance of the electro-hydraulic proportional control axial plunger pump according to claim 1, wherein an accumulator is connected in parallel to the test loop, and a pressure gauge is connected to an inlet of the accumulator.
6. The system for testing the performance of an electro-hydraulic proportional control axial plunger pump according to claim 1, wherein the pressure sensor is an HDA3700 series pressure sensor manufactured by HYDAC, germany.
7. The system for testing the performance of an electro-hydraulic proportional control axial plunger pump according to claim 1, wherein the first flow sensor is a non-contact displacement sensor SDVB/G/N.
8. The performance testing system of the electro-hydraulic proportional control axial plunger pump, as recited in claim 1, further comprising an auxiliary circuit connected with the oil tank, wherein the auxiliary circuit comprises a first oil filter, an oil pump and a second oil filter which are sequentially connected through a pipeline; the oil pump is driven by the second motor.
9. The system for testing the performance of the electro-hydraulic proportional control axial plunger pump according to claim 8, wherein overflow valves are connected in parallel at two ends of the oil filter.
10. The performance testing system of the electro-hydraulic proportional control axial plunger pump according to claim 1, wherein a second pressure sensor is connected to an inlet of the cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120042533.1U CN214837050U (en) | 2021-01-08 | 2021-01-08 | Performance test system of electro-hydraulic proportional control axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120042533.1U CN214837050U (en) | 2021-01-08 | 2021-01-08 | Performance test system of electro-hydraulic proportional control axial plunger pump |
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| Publication Number | Publication Date |
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| CN214837050U true CN214837050U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120042533.1U Active CN214837050U (en) | 2021-01-08 | 2021-01-08 | Performance test system of electro-hydraulic proportional control axial plunger pump |
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| CN (1) | CN214837050U (en) |
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2021
- 2021-01-08 CN CN202120042533.1U patent/CN214837050U/en active Active
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