CN217953867U

CN217953867U - Check valve performance detection device

Info

Publication number: CN217953867U
Application number: CN202222403256.XU
Authority: CN
Inventors: 董连俊; 刘振海; 佟强; 李明
Original assignee: Dalian Eastop Industrial Equipment Co ltd
Current assignee: Dalian Eastop Industrial Equipment Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-12-02
Anticipated expiration: 2032-09-09

Abstract

The utility model discloses a check valve performance detection device, including the oil tank, the level gauge, the fuel outlet valve, electric heater, air cleaner, electric contact thermometer, the oil absorption filter, a motor, the hydraulic pump, high pressure cleaner, the overflow valve, the electronic flowmeter, the manometer, electronic throttle valve, the solenoid-operated directional valve, first stop valve, the second stop valve, first pressure measurement connects, the second pressure measurement connects, first pressure sensor, second pressure sensor, the third stops the valve, the fourth stop valve, first temperature sensor, second temperature sensor, the graduated flask, the liquid level monitor, the check valve is surveyed, a controller, first oil return pipe, the second oil return pipe, third oil return pipe and fourth oil return pipe. Compared with the prior art, the utility model the advantage lies in: can carry out each item performance detection of check valve conveniently.

Description

Check valve performance detection device

Technical Field

The utility model relates to a mechanical equipment performance detection device technical field specifically indicates a check valve performance detection device.

Background

The check valve is a valve which can make fluid medium only flow along one direction of inlet and can not flow back along reverse direction of outlet. Before the one-way valve leaves a factory, various performance indexes of the one-way valve need to be detected according to relevant standards, and the performance indexes mainly comprise reverse pressure resistance, internal leakage, forward pressure loss, opening pressure, durability and the like. At present, the performance of the check valve is generally detected through manual batch operation, so that the detection efficiency is low, the detection result is inaccurate, the performance of the check valve cannot meet the technical requirements, and adverse effects are caused on the use of subsequent equipment.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art shortcoming, provide a check valve performance detection device, it is rational in infrastructure, can carry out each item performance detection of check valve conveniently.

In order to solve the technical problem, the performance detection device of the one-way valve comprises an oil tank, a liquid level meter, an oil discharge valve, an electric heater, an air filter, an electric contact thermometer, an oil suction filter, a motor, a hydraulic pump, a high-pressure filter, an overflow valve, an electronic flowmeter, a pressure gauge, an electric throttle valve, an electromagnetic directional valve, a first stop valve, a second stop valve, a first pressure measuring joint, a second pressure measuring joint, a first pressure sensor, a second pressure sensor, a third stop valve, a fourth stop valve, a first temperature sensor, a second temperature sensor, a measuring cup, a liquid level monitor, a tested one-way valve, a controller, a first oil return pipe, a second oil return pipe, a third oil return pipe and a fourth oil return pipe.

Furthermore, the high-pressure filter comprises a bypass valve and a filter element blockage signal transmitter, the overflow valve is connected with the high-pressure filter in parallel, and the outlet of the overflow valve is connected with one end of the first oil return pipe in a matching manner.

Furthermore, the electromagnetic directional valve is a two-position four-way electromagnetic directional valve, an oil return port of the electromagnetic directional valve is connected with an inlet of the electronic flowmeter in a matched mode, and an outlet of the electronic flowmeter is connected with the second oil return pipe in a matched mode.

Furthermore, the outlet of the tested one-way valve is connected with the inlet of a fourth stop valve, a second temperature sensor, the inlet of a second stop valve, a second pressure measuring joint and a second pressure sensor in a matched mode, and the outlet of the fourth stop valve is connected with a third oil return pipe.

Furthermore, an outlet of the first stop valve is connected with a first pressure measuring joint, a first pressure sensor, a first temperature sensor, an inlet of the third stop valve and an inlet of the tested one-way valve in a matching manner, an outlet of the third stop valve is connected with a fourth oil return pipe, one end of the fourth oil return pipe is inserted into the measuring cup, and the measuring cup is provided with a liquid level monitor.

Furthermore, one end of each of the first oil return pipe, the second oil return pipe and the third oil return pipe penetrates through and extends into the oil tank.

Furthermore, the electric heater, the electric contact thermometer, the motor, the high-pressure filter, the overflow valve, the electronic flowmeter, the electric throttle valve, the electromagnetic directional valve, the first pressure sensor, the second pressure sensor, the first temperature sensor, the second temperature sensor and the liquid level monitor form a circuit loop with the controller.

Furthermore, a display screen, a start/stop button, a reverse pressure-resistant detection button, an inner leakage detection button, a forward pressure loss detection button, a starting pressure detection button and an endurance test button are arranged on the controller.

Compared with the prior art, the utility model the advantage lie in:

1. the detection device is convenient to operate and high in automation degree, various tests are controlled and completed through the controller, detection data and curves are automatically recorded and output, and the manual operation cost is saved;

2. the temperature, the pressure, the flow and the like of the hydraulic medium are monitored in real time in the test process, so that the accuracy of a detection result is ensured;

3. the performance test device for the check valve can perform performance test on a plurality of items of the check valve to be tested, and is high in detection efficiency.

Drawings

Fig. 1 is a schematic diagram of the check valve performance detecting device of the present invention.

As shown in the figure: 1. an oil tank; 2. a liquid level meter; 3. an oil drain valve; 4. an electric heater; 5. an air cleaner; 6. an electrical contact thermometer; 7. an oil absorption filter; 8. an electric motor; 9. a hydraulic pump; 10. a high pressure filter; 11. an overflow valve; 12. an electronic flow meter; 13. a pressure gauge; 14. an electric throttle valve; 15. an electromagnetic directional valve; 16. a first shut-off valve; 17. a second stop valve; 18. a first pressure tap; 19. a second pressure tap; 20. a first pressure sensor; 21. a second pressure sensor; 22. a third stop valve; 23. a fourth stop valve; 24. a first temperature sensor; 25. a second temperature sensor; 26. a measuring cup; 27. a liquid level monitor; 28. a tested check valve; 29. a controller; 30. a first oil return pipe; 31. a second oil return pipe; 32. a third oil return pipe; 33. and a fourth oil return pipe.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, a performance detection device for a check valve includes an oil tank 1, a liquid level meter 2, an oil drain valve 3, an electric heater 4, an air cleaner 5, an electric contact thermometer 6, an oil absorption filter 7, an electric motor 8, a hydraulic pump 9, a high pressure filter 10, an overflow valve 11, an electronic flowmeter 12, a pressure gauge 13, an electric throttle valve 14, an electromagnetic directional valve 15, a first stop valve 16, a second stop valve 17, a first pressure measuring joint 18, a second pressure measuring joint 19, a first pressure sensor 20, a second pressure sensor 21, a third stop valve 22, a fourth stop valve 23, a first temperature sensor 24, a second temperature sensor 25, a measuring cup 26, a liquid level monitor 27, a measured check valve 28, a controller 29, a first oil return pipe 30, a second oil return pipe 31, a third oil return pipe 32, and a fourth oil return pipe 33, oil tank 1 is used for the splendid attire to detect the hydraulic medium of usefulness, the connection of one side is equipped with level gauge 2 on the oil tank 1, and level gauge 2 is used for observing the liquid level of hydraulic medium, 2 tops of level gauge are equipped with electric contact thermometer 6, 1 opposite side of oil tank is connected and is equipped with fuel outlet valve 3 and electric heater 4, fuel outlet valve 3 is located electric heater 4 below, the one end connection is equipped with air cleaner 5 on the oil tank 1, inside oil tank 1 is arranged in to oil absorption filter 7 and hydraulic pump 9 all the cooperation, oil absorption filter 7 is connected with the suction inlet cooperation of hydraulic pump 9, motor 8 is connected with the hydraulic pump 9 cooperation, the export cooperation of hydraulic pump 9 is equipped with high pressure filter 10, the exit cooperation of high pressure filter 10 is equipped with electronic choke valve 14, and the first return oil pipe 30 cooperation of electronic choke valve 14 are connected.

High pressure cleaner 10 includes bypass valve and filter core blockage signaling apparatus, overflow valve 11 is parallelly connected with high pressure cleaner 10, the export of overflow valve 11 is connected with the one end cooperation of first time oil pipe 30, solenoid directional valve 15 is two four-way solenoid directional valve, solenoid directional valve 15's oil return port is connected with the entry cooperation of electron flowmeter 12, the export and the second of electron flowmeter 12 return oil pipe 31 cooperation and are connected, the export of being surveyed check valve 28 and fourth stop valve 23 entry, second temperature sensor 25, the entry of second stop valve 17, second pressure measurement joint 19 and the cooperation of second pressure sensor 21 are connected, the export and the third of fourth stop valve 23 return oil pipe 32 are connected, the one end of first time oil pipe 30, second return oil pipe 31 and third return oil pipe 32 all runs through the extension and arranges inside oil tank 1 in.

Under the condition that an electromagnet of the electromagnetic directional valve 15 is not electrified, a pressure oil outlet is connected with an inlet of a first stop valve 16, an outlet of the first stop valve 16 is connected with a first pressure measuring joint 18, a first pressure sensor 20, a first temperature sensor 24, an inlet of a third stop valve 22 and an inlet of a tested one-way valve 28 in a matched mode, an outlet of the third stop valve 22 is connected with a fourth oil return pipe 33, one end of the fourth oil return pipe 33 is inserted into a measuring cup 26, a liquid level monitor 27 is arranged on the measuring cup 26, and the liquid level monitor 27 can measure the content of a hydraulic medium in the measuring cup 26.

The electric heater 4, the electric contact thermometer 6, the electric motor 8, the high-pressure filter 10, the overflow valve 11, the electronic flowmeter 12, the electric throttle valve 14, the electromagnetic directional valve 15, the first pressure sensor 20, the second pressure sensor 21, the first temperature sensor 24, the second temperature sensor 25 and the liquid level monitor 27 all form a circuit loop with the controller 29, and the controller 29 is provided with a display screen, a start/stop button, a reverse pressure-resistant detection button, an internal leakage detection button, a forward pressure loss detection button, a start pressure detection button and an endurance test button.

The utility model discloses when concrete implementation, according to the regulation of JB/T10364-2014 hydraulic pressure check valve standard, the check valve type test should go on under 50 + -2 ℃, and the test of dispatching from the factory should go on under 50 + -4 ℃, to the check valve performance detection project that this design was mentioned, reverse withstand voltage detection, interior leak testing, forward pressure loss detection, opening pressure detection belong to the test project of dispatching from the factory, and endurance test belongs to the test project of type.

Before carrying out reverse pressure resistance detection, internal leakage detection, forward pressure loss detection and opening pressure detection on the one-way valve, adding a certain amount of hydraulic medium into the oil tank 1, and heating the hydraulic medium to 50 +/-4 ℃; the hydraulic medium was heated to 50 ± 2 ℃ before the durability test of the check valve.

Each detection item is described below.

Reverse withstand voltage detection: installing the tested check valve 28 on a detection device according to the direction marked by the schematic diagram, and adjusting the overflow valve 11 to be 2 times of the rated pressure of the tested check valve 28; the electric throttle valve 14 is fully opened, the electromagnetic directional valve 15 is electrified, the left function is activated, a starting button and a reverse pressure resistance detection button of the controller 29 are pressed, the motor 8 is started, the hydraulic pump 9 starts to supply oil according to the rated flow of the detected one-way valve 28, the electric throttle valve 14 starts to slowly regulate towards closing from the fully opened state under the control of the controller 29, the throttle hole of the electric throttle valve 14 is continuously reduced, the oil inlet pressure of the detected one-way valve 28 is continuously increased under the action of back pressure, when the pressure value detected by the second pressure sensor 21 reaches 1.5 times of the rated pressure of the detected one-way valve 28, the controller 29 controls the electric throttle valve 14 to stop regulating and the motor 8 to stop rotating for pressure maintaining for 5 minutes, the controller 29 automatically records data from the second pressure sensor 21 and judges whether the reverse pressure resistance performance meets the requirement, in the whole detection process, the second temperature sensor 25 continuously detects the temperature of the hydraulic medium at the detected one-way valve 28, when the temperature value of the hydraulic medium is beyond the range of 50 +/-4 ℃, the electric contact thermometer 6 feeds back a signal to the controller 29, the controller 29 starts to control the electric heater to heat the hydraulic medium to keep the temperature of the hydraulic medium within the range of 50 +/-4 ℃; after the test is finished, the controller 29 controls the electric throttle valve 14 to be opened, and the hydraulic pressure of the detection device is unloaded.

And (3) internal leakage detection: adjusting the overflow valve 11 to be 2 times of the rated pressure of the tested one-way valve 28, closing the first stop valve 16, completely opening the electric throttle valve 14, pressing an internal leakage detection button of the controller 29, automatically reversing the electromagnetic reversing valve 15 for 3 times, then reversing to a left position for activation, starting oil supply by the hydraulic pump 9 according to the rated flow of the tested one-way valve 28, slowly adjusting the electric throttle valve 14 from a completely opened state to a closed trend, continuously increasing the oil inlet pressure of the tested one-way valve 28 under the action of back pressure, opening the third stop valve 22 when the pressure value detected by the second pressure sensor 21 respectively reaches 1MPa and the rated pressure value of the tested one-way valve, allowing the leaked hydraulic medium to enter the measuring cup 26 through the third stop valve 22 and the fourth oil return pipe 33, detecting the hydraulic medium flowing into the measuring cup 26 by the liquid level monitor 27, determining whether the internal leakage meets the requirement, continuously detecting the temperature of the hydraulic medium at the tested one-way valve 28 by the second temperature sensor 25 in the whole detection process, when the temperature value of the hydraulic medium exceeds the range of 50 +/-4 ℃, feeding back a signal of the electric contact 6 to the thermometer 29, and controlling the electric heater to start heating the hydraulic medium to heat the hydraulic medium within the range of 50 +/-4 ℃; after the test is finished, the controller 29 controls the electric throttle valve 14 to be opened, and the hydraulic pressure of the detection device is unloaded.

And (3) detecting the positive pressure loss: the overflow valve 11 is adjusted to be 2 times of the rated pressure of the tested check valve 28, the electric throttle valve 14 is completely opened, the forward pressure loss detection button of the controller 29 is pressed, the hydraulic pump 9 starts to supply oil according to the test flow, hydraulic medium enters from the inlet of the tested check valve 28 and flows out from the outlet, and the first pressure sensor 20 and the second pressure sensor 21 respectively detect the inlet pressure value P of the tested check valve 28 ₁ Outlet pressure value P ₂ And fed back to the controller 29 and recorded, the forward pressure loss Δ P is calculated as follows: the delta P = P1-P2, the controller can output a forward voltage loss curve and judge whether the forward voltage loss meets the requirement; in the whole detection process, the second temperature sensor 25 continuously detects the temperature of the hydraulic medium at the tested one-way valve 28, when the temperature value of the hydraulic medium exceeds the range of 50 +/-4 ℃, the electric contact thermometer 6 feeds back a signal to the controller 29, and the controller 29 controls the electric heater 4 to start heating the hydraulic medium, so that the temperature of the medium is kept within the range of 50 +/-4 ℃.

And (3) detecting the opening pressure: the overflow valve 11 is adjusted to be 2 times of the rated pressure of the tested one-way valve 28, the electric throttle valve 14 is completely opened, a start pressure detection button of the controller 29 is pressed, the hydraulic pump 9 starts to supply oil according to the rated flow of the tested one-way valve 28, the electric throttle valve 14 starts to be slowly adjusted to the closing trend from the completely opened state, the oil inlet pressure of the tested one-way valve 28 starts to be continuously increased from 0 under the action of back pressure, when the pressure value is increased to the point that the electronic flowmeter 12 detects the flow of the hydraulic medium, the pressure value is the start pressure of the tested one-way valve 28, the controller 29 records the start pressure value, and the detection frequency of the start pressure is not less than 3 times; in the whole detection process, the second temperature sensor 25 continuously detects the temperature of the hydraulic medium at the position of the detected one-way valve 28, when the temperature value of the hydraulic medium exceeds the range of 50 +/-4 ℃, the electric contact thermometer 6 feeds back a signal to the controller 29, and the controller 29 controls the electric heater 4 to start heating the hydraulic medium, so that the temperature of the medium is kept within the range of 50 +/-4 DEG C

And (3) endurance test: adjusting the overflow valve 11 to be 2 times of the rated pressure of the tested one-way valve 28, pressing a forward pressure loss detection button of the controller 29, adjusting the electric throttle valve 14 to be the rated pressure of the tested one-way valve 28, starting oil supply to the hydraulic pump 9 according to the test flow, controlling the electromagnetic reversing valve 15 to continuously reverse at the frequency of 20-40 times/minute by the controller 29, recording the action times, stopping the motor 8, stopping reversing the electromagnetic reversing valve 15 after the durability action times specified by relevant standards are reached, completely opening the electric throttle valve 14, unloading the detection device, detaching the tested one-way valve 28, disassembling the tested one-way valve 28, checking the conditions of main parts, and judging the durability of the tested one-way valve 28 according to the relevant standards; in the whole detection process, the second temperature sensor 25 continuously detects the temperature of the hydraulic medium at the tested one-way valve 28, when the temperature value of the hydraulic medium is beyond the range of 50 +/-4 ℃, the electric contact thermometer 6 feeds back a signal to the controller 29, and the controller 29 controls the electric heater 4 to start heating the hydraulic medium, so that the temperature of the medium is kept within the range of 50 +/-2 ℃.

The present invention and its embodiments have been described above, but the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, it should be understood that those skilled in the art should also understand the scope of the present invention without inventively designing the similar structure and embodiments of the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides a check valve performance detection device which characterized in that: comprises an oil tank (1), a liquid level meter (2), an oil drain valve (3), an electric heater (4), an air filter (5), an electric contact thermometer (6), an oil absorption filter (7), a motor (8), a hydraulic pump (9), a high-pressure filter (10), an overflow valve (11), an electronic flowmeter (12), a pressure gauge (13), an electric throttle valve (14), an electromagnetic directional valve (15), a first stop valve (16), a second stop valve (17), a first pressure measuring joint (18), a second pressure measuring joint (19), a first pressure sensor (20), a second pressure sensor (21), a third stop valve (22), a fourth stop valve (23), a first temperature sensor (24), a second temperature sensor (25), a measuring cup (26), a liquid level monitor (27), a measured one-way valve (28), a controller (29), a first oil return pipe (30), a second oil return pipe (31), a third oil return pipe (32) and a fourth oil return pipe (33), wherein the liquid level meter (2) is connected to one side of the oil tank (1), the electric contact thermometer (3) and the electric heater (4) are arranged above the oil drain valve (6), oil drain valve (3) are located electric heater (4) below, one end connection is equipped with air cleaner (5) on oil tank (1), oil absorption filter (7) and hydraulic pump (9) all cooperate and arrange oil tank (1) inside in, oil absorption filter (7) cooperate with the suction inlet of hydraulic pump (9) to be connected, motor (8) are connected with hydraulic pump (9) cooperation, the export cooperation of hydraulic pump (9) is equipped with high pressure filter (10), the exit cooperation of high pressure filter (10) is equipped with electronic choke valve (14), and the export and the first oil return pipe (30) cooperation of electronic choke valve (14) are connected.

2. The check valve performance testing device of claim 1, wherein: the high-pressure filter (10) comprises a bypass valve and a filter element blockage signal transmitter, the overflow valve (11) is connected with the high-pressure filter (10) in parallel, and the outlet of the overflow valve (11) is connected with one end of the first oil return pipe (30) in a matched mode.

3. The check valve performance testing device of claim 1, wherein: the electromagnetic directional valve (15) is a two-position four-way electromagnetic directional valve, an oil return port of the electromagnetic directional valve (15) is connected with an inlet of the electronic flowmeter (12) in a matched mode, and an outlet of the electronic flowmeter (12) is connected with a second oil return pipe (31) in a matched mode.

4. The check valve performance detection device of claim 1, wherein: the outlet of the tested one-way valve (28) is connected with the inlet of a fourth stop valve (23), the inlet of a second temperature sensor (25), the inlet of a second stop valve (17), a second pressure measuring joint (19) and a second pressure sensor (21) in a matched mode, and the outlet of the fourth stop valve (23) is connected with a third oil return pipe (32).

5. The check valve performance testing device of claim 1, wherein: the outlet of the first stop valve (16) is matched and connected with a first pressure measuring connector (18), a first pressure sensor (20), a first temperature sensor (24), an inlet of a third stop valve (22) and an inlet of a tested one-way valve (28), the outlet of the third stop valve (22) is connected with a fourth oil return pipe (33), one end of the fourth oil return pipe (33) is inserted into the measuring cup (26), and a liquid level monitor (27) is arranged on the measuring cup (26).

6. The check valve performance detection device of claim 1, wherein: one end of each of the first oil return pipe (30), the second oil return pipe (31) and the third oil return pipe (32) penetrates through and extends to be arranged inside the oil tank (1).

7. The check valve performance testing device of claim 1, wherein: the electric heater (4), the electric contact thermometer (6), the motor (8), the high-pressure filter (10), the overflow valve (11), the electronic flowmeter (12), the electric throttle valve (14), the electromagnetic directional valve (15), the first pressure sensor (20), the second pressure sensor (21), the first temperature sensor (24), the second temperature sensor (25) and the liquid level monitor (27) form a circuit loop together with the controller (29).

8. The check valve performance testing device of claim 1, wherein: the controller (29) is provided with a display screen, a start/stop button, a reverse pressure-resistant detection button, an inner leakage detection button, a forward pressure loss detection button, a starting pressure detection button and an endurance test button.