CN114623125A - High-speed switch valve performance test system - Google Patents
High-speed switch valve performance test system Download PDFInfo
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- CN114623125A CN114623125A CN202210300879.6A CN202210300879A CN114623125A CN 114623125 A CN114623125 A CN 114623125A CN 202210300879 A CN202210300879 A CN 202210300879A CN 114623125 A CN114623125 A CN 114623125A
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- electromagnetic directional
- way electromagnetic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/855—Testing of fluid pressure systems
Abstract
A performance test system for a high-speed switch valve relates to the technical field of performance test of high-speed switch valves. The problems that the existing product for detecting the performance of the high-speed switch valve is single in testing function and small in load adjusting range are solved. The test system can be simultaneously provided with the two-position three-way high-speed switch valve and the two-position two-way high-speed switch valve, and the performance tests of the two high-speed switch valves are respectively realized by opening and closing different stop valves. The first proportional overflow valve can adjust the inlet pressure and flow of the test valve and keep the inlet pressure and flow constant, and the second proportional overflow valve and the throttle valve can adjust the outlet pressure and flow of the two-way valve and the three-way valve to be tested and keep the outlet pressure and flow constant. The two signal generators can adjust the duty ratio of the control signal of the high-speed switch valve and test the relevant characteristics of the high-speed switch valve. And the static flow test is realized by opening or closing the third stop valve or the fourth stop valve. The invention is suitable for testing the high-speed switch valve.
Description
Technical Field
The invention relates to the technical field of performance testing of high-speed switching valves.
Background
The hydraulic transmission has the advantages of large power density, compact structure, flexible arrangement, high control precision and the like, and is widely applied to various electromechanical systems, and the hydraulic valve is used as an important control element of the hydraulic system, and the performance of the hydraulic valve directly influences the service performance of the hydraulic system.
In recent years, digital hydraulic pressure is continuously developed, and digital hydraulic valve products are continuously presented. Among numerous products, the high-speed switch valve is the most basic and mature digital hydraulic valve, and the outstanding characteristics of the high-speed switch valve in the aspects of connection mode, structural composition, environment friendliness, processing cost, working performance, cleanliness and the like between the high-speed switch valve and a PC end are incomparable with traditional hydraulic valves such as other proportional valves, servo valves and the like, and the high-speed switch valve has two types, namely a two-position two-way valve and a two-position three-way valve, and the two types are normally open and normally closed. The basic idea of such a valve is: the modulated pulse signal is used to control the high-speed switch of valve port to change the time ratio between opening and closing of valve port to regulate the average flow or pressure output by valve. The valve port of the high-speed switch valve has only two determined positions, and the product is very convenient to be connected with a computer interface.
Therefore, the performance of the high-speed switch valve is detected as an indelible link in product design and production, the product design is facilitated through the performance detection of the high-speed switch valve, the product performance is improved, and the production quality of the hydraulic valve is controlled. The performance test system of the general high-speed switch valve has the problems of single function, small load adjusting range and the like, and different test systems are required to be replaced to test each performance index of the valve.
Disclosure of Invention
The invention aims to solve the problems of single test function and small load regulation range of the existing product for detecting the performance of a high-speed switch valve, and provides a performance test system of the high-speed switch valve.
The invention relates to a performance test system of a high-speed switch valve, which comprises an oil tank, a first proportional overflow valve, a variable hydraulic pump, a speed regulating valve, a proportional pressure reducing valve, a first two-position three-way electromagnetic directional valve, a first signal generator, a second signal generator, a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a second two-position three-way electromagnetic directional valve, a third two-position three-way electromagnetic directional valve, a second proportional overflow valve, a throttle valve, a hydraulic cylinder, a thrust sensor and a displacement sensor, wherein the first proportional overflow valve is arranged on the oil tank;
oil is contained in an oil tank, an oil outlet of the oil tank is communicated with an oil inlet of a variable hydraulic pump, the variable hydraulic pump is used for adjusting the pressure of the oil flowing through the variable hydraulic pump, the oil outlet of the variable hydraulic pump is simultaneously communicated with an oil inlet of a first proportional overflow valve and an oil inlet of a speed regulating valve, the oil outlet of the first proportional overflow valve is connected with the oil tank, and the first proportional overflow valve is used for adjusting the oil pressure at the oil outlet side of the variable hydraulic pump;
An oil outlet of the speed regulating valve is communicated with an oil inlet of the proportional pressure reducing valve, an oil outlet of the proportional pressure reducing valve is communicated with a liquid inlet P of the first two-position three-way electromagnetic directional valve, a control port A of the first two-position three-way electromagnetic directional valve is used for being connected with a liquid inlet of a three-way valve to be tested, one liquid outlet of the three-way valve to be tested is directly connected with an oil tank, and the other liquid outlet of the three-way valve to be tested is connected with a liquid inlet of the third stop valve and a liquid inlet of the fourth stop valve through the first stop valve;
the liquid outlet B of the first two-position three-way electromagnetic directional valve is connected with the liquid inlet of the to-be-tested two-way valve, and the liquid outlet of the to-be-tested two-way valve is connected with the third stop valve and the fourth stop valve through the second stop valve;
the liquid outlet of the third stop valve is connected with an oil tank;
a liquid outlet of the fourth stop valve is connected with a liquid inlet P of a second two-position three-way electromagnetic directional valve, a liquid outlet B of the second two-position three-way electromagnetic directional valve is connected with a liquid inlet of an upper cavity of the hydraulic cylinder, and a liquid outlet of a lower cavity of the hydraulic cylinder is connected with an oil tank;
one end of a piston rod of the hydraulic cylinder is aligned to a square block, a thrust sensor is arranged between the square block and one end of the piston rod, and the thrust sensor is used for collecting thrust of the piston rod to the square block; the displacement sensor is used for acquiring the moving displacement of the square block;
And a control port A of the second two-position three-way electromagnetic directional valve is connected with a liquid inlet P of a third two-position three-way electromagnetic directional valve, the control port A of the third two-position three-way electromagnetic directional valve is connected with a liquid inlet of the second proportional overflow valve, and a liquid outlet B of the third two-position three-way electromagnetic directional valve is connected with a liquid inlet of the throttle valve.
Further, the oil filter further comprises a first filter, wherein the first filter is arranged between the oil and the variable displacement hydraulic pump and is used for filtering the oil entering the variable displacement hydraulic pump.
Further, the invention also comprises a one-way valve and a silencer; the one-way valve and the silencer are sequentially arranged between the variable hydraulic pump and the speed regulating valve, and the silencer is used for reducing the pressure and flow pulsation of hydraulic oil discharged by the variable hydraulic pump.
Further, the invention further comprises a first flow sensor, a first pressure sensor and a first temperature sensor, wherein the first flow sensor, the first pressure sensor and the first temperature sensor are all arranged between the oil outlet of the proportional pressure reducing valve and the liquid inlet of the first two-position three-way electromagnetic directional valve.
Further, the invention also comprises a second temperature sensor, a second pressure sensor and a second flow sensor; and the second temperature sensor, the second pressure sensor and the second flow sensor are arranged between the liquid outlets of the first stop valve and the second stop valve and the liquid inlets of the third stop valve and the fourth stop valve.
Furthermore, the invention also comprises a heater, a cooler, a fourth two-position three-way electromagnetic directional valve and a quantitative hydraulic pump;
the liquid inlet of the quantitative hydraulic pump is connected with an oil tank, the liquid outlet of the quantitative hydraulic pump is connected with the liquid inlet P of a fourth two-position three-way electromagnetic directional valve, the control port A of the fourth two-position three-way electromagnetic directional valve is communicated with the liquid inlet of a heater, and the liquid outlet of the heater is communicated with the oil tank;
and a liquid outlet B of the fourth two-position three-way electromagnetic directional valve is communicated with a liquid inlet of the cooler, and a liquid outlet of the cooler is connected with an oil tank.
Furthermore, the invention also comprises a third temperature transmission valve, an exhaust valve and a liquid level meter; the third temperature sensor is used for collecting the temperature of oil in the oil tank; the discharge valve sets up on the oil tank for carry out the exhaust step-down to the oil tank, the level gauge is used for gathering the liquid level signal of fluid in the oil tank.
Further, the invention also comprises a second filter; the second filter is arranged between the quantitative hydraulic pump and the oil tank and used for filtering oil entering the quantitative hydraulic pump.
Further, in the invention, when the three-way valve is tested, the first two-position three-way electromagnetic directional valve is powered off, the first stop valve is opened, and the second stop valve is closed.
Further, in the invention, when the two-way valve is tested, the first two-position three-way electromagnetic directional valve is electrified, the first stop valve is closed, and the second stop valve is opened.
The system can realize performance tests of pressure, flow, valve core opening and closing time and the like of the high-speed switch valve, the load can be adjusted by adjusting the size of the square block, and the performance test of the high-speed switch valve under high and low temperature environments can also be realized; the test system also provides two high-speed switch valve installation positions so as to be convenient for the performance test of two-position two-way and two-position three-way high-speed switch valves in two different forms, and the universality of the test system is effectively improved.
Drawings
FIG. 1 is a schematic diagram of the connection of the high speed switch valve performance test system of the present invention;
fig. 2 is a schematic diagram of the connection of the heater and the cooler.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The first embodiment is as follows: the present embodiment is described below with reference to fig. 1, and the performance testing system for a high-speed switching valve according to the present embodiment includes an oil tank 1, a first proportional overflow valve 2, a variable hydraulic pump 4, a speed regulating valve 7, a proportional pressure reducing valve 8, a first two-position three-way electromagnetic directional valve 12, a first signal generator 13, a second signal generator 14, a first stop valve 15, a second stop valve 16, a third stop valve 20, a fourth stop valve 21, a second two-position three-way electromagnetic directional valve 22, a third two-position three-way electromagnetic directional valve 23, a second proportional overflow valve 24, a throttle valve 25, a hydraulic cylinder 26, a thrust sensor 27, and a displacement sensor 28;
oil is contained in an oil tank 1, an oil outlet of the oil tank 1 is communicated with an oil inlet of a variable hydraulic pump 4, the variable hydraulic pump 4 is used for adjusting the pressure of the oil flowing through the variable hydraulic pump 4, the oil outlet of the variable hydraulic pump 4 is simultaneously communicated with an oil inlet of a first proportional overflow valve 2 and an oil inlet of a speed adjusting valve 7, the oil outlet of the first proportional overflow valve 2 is connected with the oil tank 1, and the first proportional overflow valve 2 is used for adjusting the oil pressure at the oil outlet side of the variable hydraulic pump 4;
An oil outlet of the speed regulating valve 7 is communicated with an oil inlet of a proportional pressure reducing valve 8, an oil outlet of the proportional pressure reducing valve 8 is communicated with a liquid inlet P of a first two-position three-way electromagnetic directional valve 12, a control port A of the first two-position three-way electromagnetic directional valve 12 is used for being connected with a liquid inlet of a three-way valve to be tested, one liquid outlet of the three-way valve to be tested is directly connected with the oil tank 1, and the other liquid outlet of the three-way valve to be tested is connected with a liquid inlet of a third stop valve 20 and a liquid inlet of a fourth stop valve 21 through a first stop valve 15;
a liquid outlet B of the first two-position three-way electromagnetic directional valve 12 is connected with a liquid inlet of a to-be-tested two-way valve, and a liquid outlet of the to-be-tested two-way valve is connected with a third stop valve 20 and a fourth stop valve 21 through a second stop valve 16;
the liquid outlet of the third stop valve 20 is connected with the oil tank 1;
a liquid outlet of the fourth stop valve 21 is connected with a liquid inlet P of a second two-position three-way electromagnetic directional valve 22, a liquid outlet B of the second two-position three-way electromagnetic directional valve 22 is connected with a liquid inlet of an upper cavity of a hydraulic cylinder 26, and a liquid outlet of a lower cavity of the hydraulic cylinder 26 is connected with an oil tank 1;
one end of a piston rod of the hydraulic cylinder 26 is aligned to a square block, a thrust sensor is arranged between the square block and one end of the piston rod, and the thrust sensor 27 is used for collecting thrust of the piston rod to the square block; the displacement sensor 28 is used for acquiring the moving displacement of the square;
A control port A of the second two-position three-way electromagnetic directional valve 22 is connected with a liquid inlet P of a third two-position three-way electromagnetic directional valve 23, the control port A of the third two-position three-way electromagnetic directional valve 23 is connected with a liquid inlet of a second proportional overflow valve 24, and a liquid outlet B of the third two-position three-way electromagnetic directional valve 23 is connected with a liquid inlet of a throttle valve 25.
The system can simultaneously install the two-position three-way high-speed switch valve and the two-position two-way high-speed switch valve in the embodiment, and the performance test aiming at the two high-speed switch valves is respectively realized by opening and closing different stop valves. The first proportional overflow valve can adjust the inlet pressure and flow of the test valve and keep the inlet pressure and flow constant, and the second proportional overflow valve 24 and the throttle valve 25 can adjust the outlet pressure and flow of the two-way valve and the three-way valve to be tested and keep the outlet pressure and flow constant. The first signal generator 13 and the second signal generator 14 may adjust a duty ratio of a control signal of the high-speed switching valve to test a relevant characteristic of the high-speed switching valve. And the static flow test is realized by opening or closing the third stop valve or the fourth stop valve. The high-speed switch valve pulse signal and the pressure signal can be detected by an oscilloscope, and the opening and closing time of the high-speed switch valve pulse signal and the pressure signal can be measured. By selecting blocks of different masses to vary the load size, no load can be achieved when removing blocks.
The system can test the performance of two-position two-way and two-position three-way high-speed switch valves in different forms, and the test items comprise flow characteristic experiments of the high-speed switch valves and can detect the flow performance and internal leakage of the high-speed switch valves; the pressure characteristic experiment is carried out on the high-speed switch valve, and the pressure characteristic and the sensitivity to the load of the high-speed switch valve can be detected; the high-speed switch valve is subjected to a compressive strength test, so that the compressive strength of the high-speed switch valve can be detected, and the high-speed switch valve is free of mechanical damage; the tightness test is carried out on the high-speed switch valve, and the tightness of the high-speed switch valve and the leakage quantity at an outlet of the high-speed switch valve can be detected; the static flow test is carried out on the high-speed switch valve, and the static flow of the outlet of the high-speed switch valve can be detected; the valve core opening and closing time test is carried out on the high-speed switch valve, and the opening time and the closing time of the high-speed switch valve can be detected; carrying out high and low temperature experiments on the high-speed switch valve, and detecting the pressure-flow characteristics of the high-speed switch valve under different temperature conditions; the load is adjustable.
Further, in the present embodiment, the variable displacement hydraulic pump further includes a first filter 3, and the first filter 3 is disposed between the oil tank 1 and the variable displacement hydraulic pump 4 and is used for filtering the oil entering the variable displacement hydraulic pump 4.
Further, in the present embodiment, the present invention further includes a check valve 5 and a muffler 6; the one-way valve 5 and the silencer 6 are sequentially arranged between the variable hydraulic pump 4 and the speed regulating valve 7, and the silencer 6 is used for reducing pressure and flow pulsation of hydraulic oil discharged by the variable hydraulic pump 4.
In the embodiment, the silencer is used for eliminating the influence of pressure and flow pulsation of the hydraulic pump on performance detection of the high-speed switch valve.
Further, in this embodiment, the proportional pressure reducing valve further includes a first flow sensor 9, a first pressure sensor 10, and a first temperature sensor 11, where the first flow sensor 9, the first pressure sensor 10, and the first temperature sensor 11 are all disposed between an oil outlet of the proportional pressure reducing valve 8 and a liquid inlet of the first two-position three-way electromagnetic directional valve 12.
Further, in the present embodiment, a second temperature sensor 17, a second pressure sensor 18, and a second flow sensor 19; the second temperature sensor 17, the second pressure sensor 18 and the second flow sensor 19 are all arranged between the liquid outlets of the first stop valve 15 and the second stop valve 16 and the liquid inlets of the third stop valve 20 and the fourth stop valve 21.
Further, the present embodiment is described with reference to fig. 2, and in the present embodiment, the present embodiment further includes a heater 29, a cooler 30, a fourth two-position three-way electromagnetic directional valve 31, and a fixed-quantity hydraulic pump 32;
A liquid inlet of the quantitative hydraulic pump 32 is connected with the oil tank 1, a liquid outlet of the quantitative hydraulic pump 32 is connected with a liquid inlet P of the fourth two-position three-way electromagnetic directional valve 31, a control port A of the fourth two-position three-way electromagnetic directional valve 31 is communicated with a liquid inlet of the heater 29, and a liquid outlet of the heater 29 is communicated with the oil tank;
a liquid outlet B of the fourth two-position three-way electromagnetic directional valve 31 is communicated with a liquid inlet of the cooler 30, and a liquid outlet of the cooler 30 is connected with the oil tank 1.
The system of this embodiment can carry out high low temperature experiment, controls the temperature of entering high-speed switch valve fluid through heating or cooling oil tank fluid, guarantees that the fluid temperature who gets into the test valve is invariable.
Further, in the present embodiment, a third temperature sensor 34, an exhaust valve 35, and a liquid level meter 36 are further included; the third temperature sensor 34 is used for collecting the temperature of oil in the oil tank 1; the discharge valve 35 is arranged on the oil tank 1 and used for discharging and reducing pressure of the oil tank 1, and the liquid level meter 36 is used for collecting liquid level signals of oil in the oil tank 1.
Further, in the present embodiment, a second filter 33 is further included; the second filter 33 is disposed between the constant displacement pump 32 and the tank 1, and filters oil introduced into the constant displacement pump 32.
Further, in the present embodiment, when the three-way valve is tested, the first two-way three-way electromagnetic directional valve 12 is de-energized, the first stop valve 15 is opened, and the second stop valve 16 is closed.
Further, in the present embodiment, in the two-way valve test, the first two-way three-way electromagnetic directional valve 12 is energized, the first stop valve 15 is closed, and the second stop valve 16 is opened.
The system can be simultaneously provided with two high-speed switch valves, and the valves can realize the test of the two valves by operating the first two-position three-way electromagnetic directional valve 12, the first stop valve 15 and the second stop valve 16: when the first two-position three-way electromagnetic directional valve 12 is powered off, as in the state of fig. 1, oil passes through the three-way valve, the first stop valve 15 is opened, and the second stop valve 16 is closed, otherwise the oil flows through the first stop valve 16 in a reverse direction; similarly, 12, after the power is switched on, the channel is changed, the oil passes through the two-way valve, the second stop valve 16 is ensured to be opened, and the first stop valve 15 is closed, so that the test of the high-speed valves with different valve port numbers is realized.
And (3) withstand voltage test: when the state of the high-speed valve under the rated pressure is tested, the outlet of the valve needs to be blocked, like a faucet, the faucet is blocked, and the water pressure is adjusted to be high by a water works, so that water leakage can be avoided when people see the high-speed valve. How to plug the valve outlet, by closing the first stop valve 15 or the second stop valve 16, when testing the three-way valve, the first two-position three-way electromagnetic directional valve 12 is powered off, and the first stop valve 15 is closed; when the two-way valve is tested, the first two-position three-way electromagnetic directional valve 12 is electrified, the second stop valve 16 is closed, and the pressure resistance experiment and the sealing experiment are different in that the stop valve at the downstream of the tested valve is required to be closed in the pressure resistance experiment, and then the variable displacement pump works to apply pressure to the tested valve.
And (3) testing the static flow: for other tests of the valve, the valve outlet is loaded, and after passing through the second flow sensor 19, the oil flows directly back to the tank 1 through the third shut-off valve 20, and to ensure this flow, the third shut-off valve 20 is opened and the fourth shut-off valve 21 is closed.
After the static flow is finished, the third stop valve 20 is closed, a link behind the second two-position three-way electromagnetic directional valve 22 is divided into three parts, namely a second proportional overflow valve 24, a throttle valve 25 and a hydraulic cylinder 26, and if oil flows through the hydraulic cylinder 26, the second two-position three-way electromagnetic directional valve 22 is electrified; when the oil flows to the second proportional overflow valve 24 or the throttle valve 25, the second two-position three-way electromagnetic directional valve 22 is powered off, and then the oil is distinguished from flowing to the second proportional overflow valve 24 or the throttle valve 25; when the third two-position three-way electromagnetic directional valve 23 is powered off, the oil flows through the second proportional overflow valve 24 and flows through the throttle valve 25 when the valve is powered on
Flow characteristic test: the third stop valve 20 is closed, the third stop valve 20 is opened, the fourth stop valve 21 is opened, the second two-position three-way electromagnetic directional valve 22 is powered off, and as shown in fig. 1, the second proportional overflow valve 24 regulates the outlet pressure, so that the corresponding valve outlet flow under different outlet pressures can be measured through the flow sensor 19; 25 is regulating the outlet flow so that the corresponding valve outlet flow at different outlet flows can be measured by the second flow sensor 19;
Pressure-flow characteristics: the oil flows through the hydraulic cylinder 26, the second two-position three-way electromagnetic directional valve 22 is electrified, the piston rod of the hydraulic cylinder 26 moves to push the square blocks to simulate the real working state, the number of the square blocks is large, and the load size is changed by adjusting the number of the square blocks like weights.
Pressure characteristic test: the duty ratio is adjusted to adjust the opening size of the two-way valve or the three-way valve, the pressure sensor is used for measuring the change of the outlet pressure, and the valve is tested to perform related operation, at this time, the third stop valve 20 is also closed, the fourth stop valve 21 is opened, the second two-position three-way electromagnetic directional valve 22 is electrified, namely, oil flows through the hydraulic cylinder 26.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (10)
1. A performance test system of a high-speed switch valve is characterized by comprising an oil tank (1), a first proportional overflow valve (2), a variable hydraulic pump (4), a speed regulating valve (7), a proportional pressure reducing valve (8), a first two-position three-way electromagnetic directional valve (12), a first signal generator (13), a second signal generator (14), a first stop valve (15), a second stop valve (16), a third stop valve (20), a fourth stop valve (21), a second two-position three-way electromagnetic directional valve (22), a third two-position three-way electromagnetic directional valve (23), a second proportional overflow valve (24), a throttle valve (25), a hydraulic cylinder (26), a thrust sensor (27) and a displacement sensor (28);
oil is contained in an oil tank (1), an oil outlet of the oil tank (1) is communicated with an oil inlet of a variable hydraulic pump (4), the variable hydraulic pump (4) is used for adjusting the pressure of the oil flowing through the variable hydraulic pump, the oil outlet of the variable hydraulic pump (4) is simultaneously communicated with an oil inlet of a first proportional overflow valve (2) and an oil inlet of a speed adjusting valve (7), the oil outlet of the first proportional overflow valve (2) is connected with the oil tank (1), and the first proportional overflow valve (2) is used for adjusting the oil pressure of the oil outlet side of the variable hydraulic pump (4);
an oil outlet of the speed regulating valve (7) is communicated with an oil inlet of a proportional pressure reducing valve (8), an oil outlet of the proportional pressure reducing valve (8) is communicated with a liquid inlet P of a first two-position three-way electromagnetic directional valve (12), a control port A of the first two-position three-way electromagnetic directional valve (12) is used for being connected with a liquid inlet of a three-way valve to be tested, one liquid outlet of the three-way valve to be tested is directly connected with an oil tank (1), and the other liquid outlet of the three-way valve to be tested is connected with a liquid inlet of a third stop valve (20) and a liquid inlet of a fourth stop valve (21) through a first stop valve (15);
A liquid outlet B of the first two-position three-way electromagnetic directional valve (12) is connected with a liquid inlet of a two-way valve to be tested, and a liquid outlet of the two-way valve to be tested is connected with a third stop valve (20) and a fourth stop valve (21) through a second stop valve (16);
the liquid outlet of the third stop valve (20) is connected with the oil tank (1);
a liquid outlet of the fourth stop valve (21) is connected with a liquid inlet P of a second two-position three-way electromagnetic directional valve (22), a liquid outlet B of the second two-position three-way electromagnetic directional valve (22) is connected with a liquid inlet of an upper cavity of a hydraulic cylinder (26), and a liquid outlet of a lower cavity of the hydraulic cylinder (26) is connected with an oil tank (1);
one end of a piston rod of the hydraulic cylinder (26) is aligned to a square block, a thrust sensor is arranged between the square block and one end of the piston rod, and the thrust sensor (27) is used for collecting thrust of the piston rod to the square block; the displacement sensor (28) is used for acquiring the moving displacement of the square;
the control port A of the second two-position three-way electromagnetic directional valve (22) is connected with the liquid inlet P of the third two-position three-way electromagnetic directional valve (23), the control port A of the third two-position three-way electromagnetic directional valve (23) is connected with the liquid inlet of the second proportional overflow valve (24), and the liquid outlet B of the third two-position three-way electromagnetic directional valve (23) is connected with the liquid inlet of the throttle valve (25).
2. The performance testing system of the high-speed switch valve is characterized by further comprising a first filter (3), wherein the first filter (3) is arranged between the oil tank (1) and the variable hydraulic pump (4) and is used for filtering oil entering the variable hydraulic pump (4).
3. The high-speed switch valve performance testing system of claim 1, further comprising a one-way valve (5) and a muffler (6); the check valve (5) and the silencer (6) are sequentially arranged between the variable hydraulic pump (4) and the speed regulating valve (7), and the silencer (6) is used for reducing the pressure and flow pulsation of hydraulic oil discharged by the variable hydraulic pump (4).
4. A high-speed switch valve performance testing system according to claim 1, 2 or 3, further comprising a first flow sensor (9), a first pressure sensor (10) and a first temperature sensor (11), wherein the first flow sensor (9), the first pressure sensor (10) and the first temperature sensor (11) are all arranged between the oil outlet of the proportional pressure reducing valve (8) and the liquid inlet of the first two-position three-way electromagnetic directional valve (12).
5. The high-speed switch valve performance testing system of claim 4, further comprising a second temperature sensor (17), a second pressure sensor (18), a second flow sensor (19); and the second temperature sensor (17), the second pressure sensor (18) and the second flow sensor (19) are arranged between the liquid outlets of the first stop valve (15) and the second stop valve (16) and the liquid inlets of the third stop valve (20) and the fourth stop valve (21).
6. The high-speed switch valve performance testing system according to claim 1, 2 or 5, characterized by further comprising a heater (29), a cooler (30), a fourth two-position three-way electromagnetic directional valve (31) and a quantitative hydraulic pump (32);
a liquid inlet of the quantitative hydraulic pump (32) is connected with the oil tank (1), a liquid outlet of the quantitative hydraulic pump (32) is connected with a liquid inlet P of a fourth two-position three-way electromagnetic directional valve (31), a control port A of the fourth two-position three-way electromagnetic directional valve (31) is communicated with a liquid inlet of the heater (29), and a liquid outlet of the heater (29) is communicated with the oil tank;
a liquid outlet B of the fourth two-position three-way electromagnetic directional valve (31) is communicated with a liquid inlet of a cooler (30), and a liquid outlet of the cooler (30) is connected with the oil tank (1).
7. The high-speed switch valve performance testing system of claim 6, further comprising a third temperature sensor (34), an exhaust valve (35) and a liquid level meter (36); the third temperature sensor (34) is used for collecting the temperature of oil in the oil tank (1); the exhaust valve (35) is arranged on the oil tank (1) and used for exhausting and reducing pressure of the oil tank (1), and the liquid level meter (36) is used for collecting liquid level signals of oil in the oil tank (1).
8. The high-speed switching valve performance testing system of claim 7, further comprising a second filter (33); the second filter (33) is arranged between the quantitative hydraulic pump (32) and the oil tank (1) and is used for filtering oil entering the quantitative hydraulic pump (32).
9. A high-speed switch valve performance test system according to claim 1, characterized in that, during the three-way valve test, the first two-position three-way electromagnetic directional valve (12) is de-energized, the first stop valve (15) is opened, and the second stop valve (16) is closed.
10. The performance test system of the high-speed switch valve according to claim 1, wherein during the two-way valve test, the first two-position three-way electromagnetic directional valve (12) is electrified, the first stop valve (15) is closed, and the second stop valve (16) is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210300879.6A CN114623125B (en) | 2022-03-25 | 2022-03-25 | High-speed switch valve performance test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210300879.6A CN114623125B (en) | 2022-03-25 | 2022-03-25 | High-speed switch valve performance test system |
Publications (2)
| Publication Number | Publication Date |
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| CN114623125A true CN114623125A (en) | 2022-06-14 |
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| CN105545877A (en) * | 2015-12-18 | 2016-05-04 | 杰锋汽车动力系统股份有限公司 | Performance test device for transmission valve of automatic transmission |
| CN205937310U (en) * | 2016-08-25 | 2017-02-08 | 山西东润精益电力液压控制有限公司 | Conveniently test test system of servovalve performance |
| US20190178746A1 (en) * | 2017-12-11 | 2019-06-13 | Xuzhou University Of Technology | Load-sensitive multi-path valve testing device and testing method |
| CN111577684A (en) * | 2020-04-15 | 2020-08-25 | 哈尔滨工业大学 | Hydraulic valve performance test experimental system |
| CN112762054A (en) * | 2021-01-14 | 2021-05-07 | 哈尔滨工业大学 | Comprehensive hydraulic valve performance test system |
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| CN105545877A (en) * | 2015-12-18 | 2016-05-04 | 杰锋汽车动力系统股份有限公司 | Performance test device for transmission valve of automatic transmission |
| CN205937310U (en) * | 2016-08-25 | 2017-02-08 | 山西东润精益电力液压控制有限公司 | Conveniently test test system of servovalve performance |
| US20190178746A1 (en) * | 2017-12-11 | 2019-06-13 | Xuzhou University Of Technology | Load-sensitive multi-path valve testing device and testing method |
| CN111577684A (en) * | 2020-04-15 | 2020-08-25 | 哈尔滨工业大学 | Hydraulic valve performance test experimental system |
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