CN109854493B - Hydraulic-fuel oil double-loop multifunctional testing equipment - Google Patents
Hydraulic-fuel oil double-loop multifunctional testing equipment Download PDFInfo
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- CN109854493B CN109854493B CN201811335733.5A CN201811335733A CN109854493B CN 109854493 B CN109854493 B CN 109854493B CN 201811335733 A CN201811335733 A CN 201811335733A CN 109854493 B CN109854493 B CN 109854493B
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Abstract
The invention provides a hydraulic-fuel double-loop multifunctional test device, which is characterized in that one path of a tested fuel pump is connected with a pilot type proportional overflow valve through an electric three-way valve to perform a load working condition performance test of the tested fuel pump, and the other path of the tested fuel pump is connected with a proportional throttle valve to perform an impact performance test of the tested fuel pump; one path of the tested hydraulic pump is connected with the pilot-operated proportional overflow valve through the electric three-way valve to perform a load working condition performance test of the tested hydraulic pump, and the other path of the tested hydraulic pump is connected with the two-position three-way electromagnetic directional valve and the pilot-operated proportional overflow valve to perform an impact performance test of the tested hydraulic pump. The invention adopts the throttling mode of a pilot type proportional overflow valve and a proportional throttle valve to generate different pipeline pressures, provides various load working conditions for testing the hydraulic pump and the fuel pump by taking various sensor signals in a loop as feedback adjustment required target values, and realizes the working characteristics of the pressure and the volumetric efficiency, the pressure and the total efficiency, the pressure and the output power, and the pressure and the flow of the hydraulic pump and the fuel pump so as to realize the impact performance test of the hydraulic pump and the fuel pump.
Description
Technical Field
The invention belongs to the technical field of hydraulic and fuel product detection, and particularly relates to a testing device for testing the pressure, flow, working characteristics, impact test and other performances of a plunger pump and a piston pump.
Background
The hydraulic pump and the fuel pump are required to be tested for their working performance, such as pressure, flow, temperature and impact performance, during assembly, shipment and repair. However, at present, the systems for detecting the performance of the hydraulic fuel pump and the fuel pump are independent systems, that is, the hydraulic pump test system and the fuel pump test system are two independent systems respectively, one set of equipment needs one set of power system, and if the two sets of systems are combined into one, the cost can be reduced, and the multifunction of the equipment can be realized. Furthermore, with the continuous progress of science and technology, the nominal pressure of the hydraulic pump and the fuel pump is continuously developed towards high pressure, which puts higher requirements on the hydraulic system for testing the high-pressure hydraulic pump and the compression ignition oil pump. However, the system for detecting the assembling, delivery and repairing performance of the hydraulic pump and key components thereof are relatively laggard.
At present, a pilot-operated overflow valve is widely used for regulating the pressure of a hydraulic system, but the following defects exist in the testing process: the mode that relies on the manpower to adjust the pressure regulating screw carries out the pressure regulating, and degree of automation is poor, and the pressure regulating will have serious potential safety hazard in high-pressure hydraulic system moreover. Furthermore, many hydraulic pumps require shock testing, which requires a given number of periodic changes in pump pressure between zero and nominal for a given period of time. The traditional adjusting mode comprises a manual mode and a mechanical unloading mode, the manual mode has the defects of high labor intensity and low testing frequency, the life safety of operators is seriously threatened, and the mechanical unloading mode has the defects of low automation degree and low testing frequency. At present, a detection system for an automobile fuel pump is too simple and can only detect flow, pressure, temperature, voltage, current and the like, and cannot comprehensively detect the comprehensive performance of the fuel pump, such as the impact performance of the fuel pump.
Disclosure of Invention
In order to solve the above disadvantages of the test of the hydraulic pump and the fuel pump, the invention aims to: the hydraulic-fuel double-loop multifunctional testing equipment has the characteristics of multiple functions, high automation degree, safety and reliability, can realize real-time control, complete the real-time acquisition and processing of various performance parameters of the hydraulic fuel pump with the working condition conversion, display and print in the form of curves and charts, and can also be stored into various required formats.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a hydraulic pressure-fuel double circuit multifunctional test equips, its structure includes: the device comprises an oil tank, an oil filter, a proportional throttle valve, a flow sensor, a pilot-operated proportional overflow valve, a pressure sensor, a pressure gauge, an electric three-way ball valve, a tested fuel pump, a coupler, an electric control clutch, a variable frequency motor, a stop valve, a temperature sensor, a power splitter, a rotating speed and torque sensor, a tested hydraulic pump, a buffer, a two-position three-way electromagnetic directional valve, an electromagnetic one-way valve and an air filter; the power divider is connected with a tested fuel pump and a tested hydraulic pump through an upper electric control clutch and a lower electric control clutch respectively, so that power sharing is realized; the tested fuel pump is connected with an electric three-way ball valve, and one way of the electric three-way ball valve is connected with a pilot type proportional overflow valve to perform a load working condition performance test on an oil way of the tested fuel pump; the other path is connected with a proportional throttle valve to perform an impact test on the fuel pump to be tested; a pressure sensor, an electric pressure gauge and a flow sensor are arranged between the pilot-operated proportional overflow valve and the electric three-way ball valve; and a pressure sensor, a pressure gauge and a flow sensor are arranged between the proportional throttle valve and the electric three-way ball valve. The variable frequency motor is set on the power splitter, and two stop valves are respectively set between the tested hydraulic pump or the tested fuel pump and the oil filter. The electric control clutch is connected with a tested hydraulic pump through a coupler and a rotating speed torque sensor, the tested hydraulic pump is connected with an electric three-way ball valve, one path of the electric three-way ball valve is connected with a pilot type proportional overflow valve to perform a load working condition performance test of an oil path of the tested hydraulic pump, and the other path of the electric three-way ball valve is connected with a two-position three-way electromagnetic directional valve and the pilot type proportional overflow valve to perform an impact performance test of the tested hydraulic pump; and a buffer, a pressure gauge and a pressure sensor are sequentially connected between the measured hydraulic pump and the electric three-way ball valve in an external connection mode.
The oil tank is divided into a hydraulic oil tank and a fuel oil tank by an oil tank partition plate; an air filter and a temperature sensor are arranged in the oil tank; a pilot type proportional overflow valve and a proportional throttle valve in the detection part of the fuel pump are connected with a fuel tank in the fuel tank through a fuel filter; the pilot-operated proportional overflow valve in the hydraulic pump detection part is connected with a hydraulic oil tank of the oil tank through an electromagnetic one-way valve and a flow sensor.
The hydraulic-fuel double-loop multifunctional test equipment is used for detecting a hydraulic pump and a fuel pump through three subsystems of hydraulic system state control monitoring, data acquisition and data processing. The computer is used for carrying out real-time control and working condition conversion on the hydraulic pump and fuel pump test system, completing real-time acquisition of various parameters of the hydraulic pump and the fuel pump, and recording, displaying and printing in the form of a table, a graph and a curve.
The invention has the beneficial effects that: the invention adopts the throttling mode of the pilot-operated proportional overflow valve and the proportional throttle valve to generate different pipeline pressures, uses various sensor signals in a loop as feedback to adjust the required target values, provides various load working conditions for testing the hydraulic pump and the fuel pump, realizes the working characteristics of the pressure and the volumetric efficiency, the pressure and the total efficiency, the pressure and the output power, the pressure and the flow of the hydraulic pump and the fuel pump, and realizes the impact performance test of the hydraulic pump and the fuel pump.
Drawings
FIG. 1 is a hardware layout of the present invention;
FIG. 2 is a data acquisition detection diagram of the present invention;
FIG. 3 is a computer control system diagram of the present invention;
in the figure: 1. an oil tank; 2. filtering oil I; 3. filtering oil II; 4. a proportional throttle valve; 5. a flow sensor I; 6. a pilot type proportional overflow valve I; 7. a pressure sensor I; 8. a pressure gauge I; 9. a flow sensor II; 10. an electric three-way ball valve I; 11. a pressure sensor II; 12. a pressure gauge II; 13. a fuel pump to be tested; 14. a coupler I; 15. an electric control clutch I; 16. a variable frequency motor; 17. a stop valve I; 18. a temperature sensor I; 19. filtering the oil; 20. a power splitter; 21. an electrically controlled clutch II; 22. a coupler II; 23. a rotating speed torque sensor 24 and a coupling III; 25. oil filter
(ii) a 26. A stop valve II; 27. a measured hydraulic pump; 28. an electric three-way ball valve II; 29. a pressure sensor III; 30. a pressure gauge III; 31. a buffer; 32. a pilot type proportional overflow valve II; 33. a two-position three-way electromagnetic directional valve; 34. a pilot type proportional overflow valve III; 35. an electromagnetic one-way valve I; 36. an electromagnetic one-way valve II; 37. a flow sensor III; 38. an air filter; 39. a temperature sensor II; 40. a tank bulkhead.
Detailed Description
The hydraulic-fuel dual-circuit multifunctional test equipment provided by the invention is described in detail below with reference to the accompanying drawings.
The application provides a hydraulic pressure-multi-functional test equipment of fuel oil double circuit, as shown in fig. 1, 2, its structure includes: the system comprises an oil tank 1, an oil filter 2, a proportional throttle valve 4, a flow sensor, a pilot-operated proportional overflow valve, a pressure sensor, a pressure gauge, an electric three-way ball valve, a tested fuel pump 13, a coupler, an electric control clutch, a variable frequency motor 16, a stop valve, a temperature sensor, a power divider 20, a rotating speed and torque sensor 23, a tested hydraulic pump 27, a buffer 31, a two-position three-way electromagnetic directional valve 33, an electromagnetic one-way valve and an air filter 38; the power splitter 20 is connected with the tested fuel pump 13 and the tested hydraulic pump 27 through an upper electric control clutch and a lower electric control clutch respectively, so that power sharing is realized; the electric control clutch I15 is connected with a tested fuel pump 13 through a coupler I14, the tested fuel pump 13 is connected with an electric three-way ball valve I10, one path of the electric three-way ball valve I10 is connected with a pilot-operated proportional overflow valve I6 to perform performance tests on pressure, flow and temperature of an oil path of the tested fuel pump, and the other path of the electric three-way ball valve I10 is connected with a proportional throttle valve 4 to perform an impact performance test on the tested fuel pump 13; a pressure sensor I7, a pressure gauge I8 and a flow sensor II9 are arranged between the pilot-operated proportional overflow valve I6 and the electric three-way ball valve I10; a pressure sensor II11, a pressure gauge II12 and a flow sensor I5 are arranged between the proportional throttle valve 4 and the electric three-way ball valve I10; the oil tank 1 is divided into a hydraulic oil tank and a fuel oil tank by an oil tank partition plate 40; the pilot type proportional overflow valve I6 is connected with a fuel tank of the fuel tank 1 through a fuel filter I2, the proportional throttle valve 4 is connected with the fuel tank of the fuel tank 1 through a fuel filter II3, the tested fuel pump 13 is connected with the fuel tank of the fuel tank 1 through a stop valve I17 and a fuel filter III19, and the fuel tank in the fuel tank 1 is provided with a temperature sensor 18; the hydraulic oil is separated from the fuel by a tank partition 40.
The electric control clutch II21 is connected with the tested hydraulic pump 27 through a coupler II22, a rotating speed torque sensor 23 and a coupler III 24; the tested hydraulic pump 27 is connected with an electric three-way ball valve II28, one path of the electric three-way ball valve II28 is connected with a pilot-operated proportional overflow valve II32 to perform a load working condition performance test of an oil path of the tested hydraulic pump 27, and the other path is connected with a two-position three-way electromagnetic directional valve 33 and a pilot-operated proportional overflow valve III34 to perform an impact performance test of the tested hydraulic pump 27Testing; a buffer 31, a pressure gauge III30 and a pressure sensor III29 are sequentially connected between the tested hydraulic pump 27 and the electric three-way ball valve II28 in an external connection manner; the tested hydraulic pump 27 is connected with the oil filter through a stop valve II26
25 is connected with a hydraulic oil tank of the oil tank 1, and an air filter 38 and a temperature sensor 39 are arranged in the oil tank 1; the two-position three-way electromagnetic directional valve 33 is connected with a hydraulic oil tank of the oil tank 1; the pilot-operated proportional overflow valve II32 is connected with a flow sensor III37 through an electromagnetic check valve II36, the pilot-operated proportional overflow valve III34 is connected with a flow sensor III37 through an electromagnetic check valve I35, and the flow sensor III37 is connected with a hydraulic oil tank of the oil tank 1.
The hydraulic test section is as follows:
in the hydraulic-fuel double-loop multifunctional test equipment, as shown in fig. 1, firstly, an electronic control clutch I15 is separated, an electronic control clutch II21 is closed, an electric three-way ball valve II28 is moved left to be communicated with a hydraulic pump 27 performance test loop, a pilot type proportional overflow valve II32 is adjusted to zero pressure, a stop valve II26 is opened at the same time, the variable frequency motor 16 can be started at the moment, whether the test loop leaks or not is observed, if all the conditions are normal, an instruction for gradually adjusting the pilot type proportional overflow valve II32 can be sent out through a computer program, the pilot type proportional overflow valve II32 is used as a controlled pressure controller, and various loads of the hydraulic pump are realized through a pressure signal of an oil circuit pressure sensor III29 and a flow signal of a flow sensor III37 and the opening degree of the pilot type proportional overflow valve II 32. Under different loads, the voltage and the current of the variable frequency motor, the pressure and the flow of the pilot type proportional relief valve II32 and the speed and torque signals of the speed and torque sensor 23 are measured, and the performance test of the tested hydraulic pump 27 is realized.
After the performance test of the tested hydraulic pump 27 is completed, unloading is performed through the pilot type proportional relief valve II32 until the pressure gauge III30 approaches a zero value, at this time, the variable frequency motor 16 is stopped, and the impact performance test of the tested hydraulic pump 27 is prepared. The electric control clutch I15 is separated, the electric control clutch II21 is closed, the electric three-way ball valve II28 is moved right to be communicated with an impact performance test loop of the tested hydraulic pump 27, a pilot type proportional overflow valve III34 is adjusted to zero pressure, a stop valve II26 is opened at the same time, the variable frequency motor 16 is started at this time, whether the impact performance test loop of the tested hydraulic pump 27 leaks or not is observed, and if all the situations are normal, an instruction for gradually adjusting the pilot type proportional overflow valve III34 can be sent out through a computer program, the pilot type proportional overflow valve III34 is used as a controlled controller, when the pressure value of the pilot type proportional overflow valve III34 reaches a target value, the two-position three-way electromagnetic directional valve 33 is controlled at a certain frequency, impact loading of the tested hydraulic pump 27 is realized, namely, the load of the tested hydraulic pump 27 is changed between a zero value and a maximum value, and through a pressure signal of an oil circuit pressure sensor III29 and a flow, the opening degree of the pilot type proportional relief valve III34 realizes impact tests of various loads of the hydraulic pump. Under different loads, the voltage and the current of the variable frequency motor, the pressure and the flow of the pilot-operated proportional relief valve III34, the speed and the torque signals of the speed and torque sensor 23 and the reversing frequency and the duration of the two-position three-way electromagnetic reversing valve 33 are measured, and the impact performance test of the tested hydraulic pump 27 is realized.
The fuel test section is as follows:
in the hydraulic-fuel double-loop multifunctional test equipment, as shown in fig. 1, firstly, an electronic control clutch II21 is separated, an electronic control clutch I15 is closed, an electric three-way ball valve I10 is moved right to be communicated with a performance test loop of a tested fuel pump 13, a pilot type proportional overflow valve I6 is adjusted to zero pressure, a stop valve I17 is opened at the same time, a variable frequency motor 16 can be started at the moment, whether the test loop leaks or not is observed, if all the conditions are normal, an instruction for gradually adjusting the pilot type proportional overflow valve I6 can be sent out through a computer program, the pilot type proportional overflow valve I6 is used as a controlled pressure controller, and various loads of the fuel pump 13 are realized through a pressure signal of an oil circuit pressure sensor I7 and a flow signal of a flow sensor II9 and the opening degree of the pilot type proportional overflow valve I6. Under different loads, the voltage and the current of the variable frequency motor, the pressure and the flow of the pilot type proportional relief valve I6 and the speed and torque signals of the speed and torque sensor are measured, and the performance test of the tested fuel pump 13 is realized.
After the performance test of the tested fuel pump 13 is completed, unloading is performed through the pilot type proportional overflow valve I6 until the pressure gauge I8 is close to a zero value, at the moment, the variable frequency motor 16 is stopped, and the impact performance test of the tested fuel pump 13 is prepared. The electric control clutch II21 is separated, the electric control clutch I15 is closed, the electric three-way ball valve 10 moves left to be connected with an impact performance test loop of the tested fuel pump 13, the opening of the proportional throttle valve 4 is adjusted to be maximum, meanwhile, the stop valve I17 is opened, the variable frequency motor 16 is started at the moment, whether the impact performance test loop of the tested fuel pump 13 leaks or not is observed, and how to do all the things are normal, namely, an instruction for gradually adjusting the proportional throttle valve 4 is sent out through a computer program, the proportional throttle valve 4 is used as a controlled controller, the proportional throttle valve 4 is controlled at a certain frequency, the load of the tested proportional throttle valve 4 is changed between a zero value and the maximum value, and the requirement of the impact load of the tested fuel pump 13 is provided through the proportional throttle valve 4 through a pressure signal of the oil way pressure. Under different loads, the voltage and the current of the variable frequency motor, the pressure and the flow of the proportional throttle valve 4, the speed and the torque signal of the speed and torque sensor, and the response frequency and the duration of the proportional throttle valve 4 are measured, so that the impact performance test of the tested fuel pump 13 is realized.
As shown in fig. 2, the data acquisition layout of the hydraulic-fuel dual-loop multifunctional testing equipment is schematically illustrated, signals enter a computer from the acquisition, need to pass through an amplifying device of the testing signals and a multifunctional acquisition card, and finally analog signals of various sensors are converted into electric signals with a certain size, and then results are recorded, displayed and printed in forms of tables and graphs through certain operations. The instruction output by the computer is realized by a certain control strategy, as shown in fig. 3, that is, the computer, the motor and the valve, the detected pump and the sensor form a negative feedback control loop, which comprises 4 feedback loops, and the first loop comprises a negative feedback closed loop formed by the computer, the variable frequency motor 16, the pilot type proportional overflow valve II32, the detected hydraulic pump 27, the pressure sensor III29 and the flow sensor III 37; the second one is a negative feedback closed loop formed by a computer, a variable frequency motor 16, a pilot type proportional overflow valve III34, a two-position three-way electromagnetic directional valve 33, a tested hydraulic pump 27, a pressure sensor III29 and a flow sensor III 37; the third one is a negative feedback loop formed by a computer, a variable frequency motor 16, a tested fuel pump 13, a pilot type proportional overflow valve I6, a pressure sensor I7 and a flow sensor II 9; the fourth negative feedback loop is composed of a computer, a variable frequency motor 16, a tested fuel pump 13, a proportional throttle valve 4, a pressure sensor II11 and a flow sensor I5.
Fig. 3 is a computer control system diagram of the present invention, in the present application, the detection of the hydraulic pump and the fuel pump is realized by three subsystems, i.e., hydraulic system state control monitoring, data acquisition and data processing. The computer is used for carrying out real-time control and working condition conversion on the hydraulic pump and fuel pump test system, completing real-time acquisition of various parameters of the hydraulic pump and the fuel pump, and recording, displaying and printing in the form of a table, a graph and a curve.
While the foregoing is susceptible to embodiments and details, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the inventive concept.
Claims (2)
1. A hydraulic pressure-fuel oil double-circuit multifunctional test equipment, its structure includes: the system comprises an oil tank, an oil filter, a proportional throttle valve, a flow sensor, a pilot-operated proportional overflow valve, a pressure sensor, a pressure gauge, an electric three-way ball valve, a coupling, an electric control clutch, a variable frequency motor, a stop valve, a temperature sensor, a power splitter, a rotating speed and torque sensor, a buffer, a two-position three-way electromagnetic directional valve, an electromagnetic one-way valve and an air filter; the method is characterized in that: when the power divider is applied, the power divider is respectively connected with a tested fuel pump and a tested hydraulic pump through an upper electric control clutch and a lower electric control clutch, so that power sharing is realized;
an electric control clutch above the power splitter is connected with a tested fuel pump through a coupler, the tested fuel pump is connected with an electric three-way ball valve, one path of the electric three-way ball valve is connected with a pilot type proportional overflow valve to perform a load working condition performance test of an oil path of the tested fuel pump, and a pressure sensor, a pressure gauge and a flow sensor are arranged between the pilot type proportional overflow valve and the electric three-way ball valve; the other path is connected with a proportional throttle valve to perform an impact performance test of the tested fuel pump, and a pressure sensor, a pressure gauge and a flow sensor are arranged between the proportional throttle valve and the electric three-way ball valve;
the electric control clutch below the power splitter is connected with a tested hydraulic pump through a coupler and a rotating speed torque sensor, the tested hydraulic pump is connected with an electric three-way ball valve, one path of the electric three-way ball valve is connected with a pilot type proportional overflow valve to perform a load working condition performance test of an oil path of the tested hydraulic pump, and the other path of the electric three-way ball valve is connected with a two-position three-way electromagnetic directional valve and the pilot type proportional overflow valve to perform an impact performance test of the tested hydraulic pump; a buffer, a pressure gauge and a pressure sensor are sequentially connected between the tested hydraulic pump and the electric three-way ball valve in an external mode;
the variable frequency motor is arranged on the power splitter, and two stop valves are respectively arranged between the tested hydraulic pump or the tested fuel pump and the oil filter;
an air filter and a temperature sensor are arranged in the oil tank; a pilot type proportional overflow valve and a proportional throttle valve in the detection part of the fuel pump are connected with a fuel tank in the fuel tank through a fuel filter; a pilot type proportional overflow valve in the hydraulic pump detection part is connected with a hydraulic oil tank of the oil tank through an electromagnetic one-way valve and a flow sensor;
the oil tank is divided into a hydraulic oil tank and a fuel oil tank through an oil tank partition plate.
2. The hydraulic-fuel dual-circuit multifunctional test equipment as claimed in claim 1, characterized in that: the detection of the hydraulic pump and the fuel pump is realized by three subsystems of hydraulic system state control monitoring, data acquisition and data processing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811335733.5A CN109854493B (en) | 2018-11-11 | 2018-11-11 | Hydraulic-fuel oil double-loop multifunctional testing equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811335733.5A CN109854493B (en) | 2018-11-11 | 2018-11-11 | Hydraulic-fuel oil double-loop multifunctional testing equipment |
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| CN109854493A CN109854493A (en) | 2019-06-07 |
| CN109854493B true CN109854493B (en) | 2020-11-17 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110185606B (en) * | 2019-06-17 | 2020-06-02 | 中国民航大学 | Performance test bench for airplane hydraulic pump |
| CN112648263A (en) * | 2021-01-28 | 2021-04-13 | 山重建机有限公司 | Multifunctional hydraulic detection device |
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