Device for realizing water pressure pulse through servo valve

Abstract

The utility model discloses a device for realizing water pressure pulse through a servo valve, which relates to the technical field of pressure pulse devices, and comprises a tested piece, a pulse pressure output assembly is arranged on one side of the tested piece, the pulse pressure output assembly comprises a high and low temperature testing machine, and the high and low temperature testing machine is arranged on the side edge of the tested piece; the high and low temperature testing machine can output fluid with constant flow and certain pressure; the input end of the servo valve is connected with the output end of the high and low temperature testing machine, one output end of the servo valve is connected with the input end of the high and low temperature testing machine, and the input end of the pressure sensor is connected with the other output end of the servo valve. According to the utility model, the pulse pressure output assembly is arranged, the servo valve is used for shunting fluid, and the pressure sensor is matched with the pressure regulating ball valve, so that the pressure can be periodically changed along with time, and the maximum water pressure can be regulated, and therefore, the battery performance module can be conveniently tested.

Description

Technical Field

[0001] The utility model relates to the field of pressure pulse devices, in particular to a device for realizing water pressure pulses through a servo valve. Background Art

[0002] Pulse is actually a kind of signal. Pulse generally refers to a short-term pulse-like electric shock (voltage or current) signal often used in electronic technology. Its main characteristic parameters are waveform, amplitude, width and repetition frequency. The main meaning of water pressure pulse is to control the pressure so that the fluid forms a pulse.

[0003] In recent years, new energy vehicles have developed rapidly, and the battery performance module test has been increasingly improved. Some customers need to realize the pressure pulse function: the output pulse pressure needs to be Figure 1 As shown: the horizontal axis in the figure is time, and the vertical axis in the figure is water pressure. For this reason, we propose a device to realize water pressure pulse through a servo valve. Utility Model Content

[0004] The purpose of the utility model is to provide a device for realizing water pressure pulses through a servo valve. By setting the pulse pressure output component, the device utilizes the servo valve to divert the fluid. Through the cooperation of the pressure sensor and the pressure-regulating ball valve, the pressure can be changed periodically over time, and the maximum water pressure can be adjusted, thereby facilitating the testing of the battery performance module.

[0005] To achieve the above object, the utility model provides the following technical solution: a device for realizing water pressure pulse through a servo valve, comprising a measured object, a pulse pressure output component is provided on one side of the measured object, and the pulse pressure output component comprises:

[0006] A high and low temperature testing machine, which is arranged on the side of the tested object; and the high and low temperature testing machine can output a fluid with a constant flow rate and a certain pressure;

[0007] A servo valve, the input end of which is connected to the output end of the high and low temperature testing machine, and the servo valve can divert fluids with a constant flow rate and a certain pressure, and one of the output ends of the servo valve is connected to the input end of the high and low temperature testing machine,

[0008] A pressure sensor, the input end of which is connected to the other output end of the servo valve, and the pressure sensor can read the pressure value in real time and transmit it back to the PLC;

[0009] A pressure regulating ball valve, the input end of which is connected to the output end of the pressure sensor, and the tested piece is located between the input end of the pressure regulating ball valve and the output end of the pressure sensor, and the output end of the pressure regulating ball valve is connected to the input end of the high and low temperature testing machine.

[0010] Preferably, a one-way valve is provided between the output end of the pressure regulating ball valve and the input end of the high and low temperature testing machine.

[0011] Preferably, a first bypass is provided on one side of the servo valve, and one end of the first bypass is connected to the output end of the high and low temperature testing machine, and the other end of the first bypass is connected to the input end of the pressure sensor, and a regulating ball valve is installed in the middle of the first bypass.

[0012] Preferably, a second bypass is provided on one side of the pressure regulating ball valve, and one end of the second bypass is connected to the input end of the pressure regulating ball valve, and the other end of the second bypass is connected to the input end of the high and low temperature testing machine, and a regulating ball valve 2 is installed in the middle of the second bypass.

[0013] Preferably, the servo valve realizes the pressure pulse function for the tested object by adjusting the ratio of the two branch fluids, one of which enters the tested object and the other returns to the high and low temperature testing machine.

[0014] Technical effects and advantages of the utility model:

[0015] The fluid with constant flow and certain pressure is output by the high and low temperature tester, and is diverted by the servo valve. One way enters the test piece, mainly passes through the pressure sensor, the test piece and the pressure regulating ball valve in sequence, and finally returns to the high and low temperature tester. One way directly returns to the high and low temperature tester. The servo valve realizes the pressure pulse function for the test piece by adjusting the ratio of the two branch fluids. The pressure sensor can read the pressure value in real time and send it back to the PLC. The upper limit of the pressure can also be adjusted by the pressure regulating ball valve, which is convenient for testing the battery performance module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of pulse pressure change in the prior art.

[0017] Figure 2 This is a schematic diagram of the structure of the water pressure pulse device implemented in the utility model.

[0018] In the figure: 1. High and low temperature testing machine; 2. Regulating ball valve 1; 3. Pressure sensor; 4. Test piece; 5. Servo valve; 6. Pressure regulating ball valve; 7. Check valve; 8. Regulating ball valve 2. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model provides Figure 1-2 A device for realizing water pressure pulse through a servo valve is shown, including a test piece 4, and a pulse pressure output component is arranged on one side of the test piece 4, and the pulse pressure output component includes: a high and low temperature test machine 1, the high and low temperature test machine 1 is arranged on the side of the test piece 4; and the high and low temperature test machine 1 can output a fluid with a constant flow and a certain pressure; a servo valve 5, the input end of the servo valve 5 is connected to the output end of the high and low temperature test machine 1, and the servo valve 5 can divert the fluid with a constant flow and a certain pressure, one of the output ends of the servo valve 5 is connected to the input end of the high and low temperature test machine 1, a pressure sensor 3, the input end of the pressure sensor 3 is connected to the other output end of the servo valve 5, and the pressure sensor 3 can read the pressure value in real time and send it back to the PLC; a pressure regulating ball valve 6, the input end of the pressure regulating ball valve 6 is connected to the output end of the pressure sensor 3, and the test piece 4 Located between the input end of the pressure regulating ball valve 6 and the output end of the pressure sensor 3, the output end of the pressure regulating ball valve 6 is connected to the input end of the high and low temperature testing machine 1; the servo valve 5 realizes the pressure pulse function for the test piece 4 by adjusting the ratio of the two-way fluid, one of which enters the test piece 4 and the other returns to the high and low temperature testing machine 1; when it is necessary to output a pulse pressure, the high and low temperature testing machine 1 outputs a fluid with a constant flow and a certain pressure, which is diverted through the servo valve 5, one of which enters the test piece 4, mainly passes through the pressure sensor 3, the test piece 4 and the pressure regulating ball valve 6 in sequence, and finally returns to the high and low temperature testing machine 1, and the other directly returns to the high and low temperature testing machine 1. The servo valve 5 realizes the pressure pulse function for the test piece 4 by adjusting the ratio of the two-way fluid, wherein the pressure sensor 3 can read the pressure value in real time and transmit it back to the PLC, and the upper limit of the pressure can also be adjusted through the pressure regulating ball valve 6.

[0021] Furthermore, a one-way valve 7 is provided between the output end of the pressure regulating ball valve 6 and the input end of the high and low temperature testing machine 1 ; by providing the one-way valve 7 , liquid backflow can be effectively avoided.

[0022] It should be particularly noted that a first bypass is provided on one side of the servo valve 5, and one end of the first bypass is connected to the output end of the high and low temperature testing machine 1, and the other end of the first bypass is connected to the input end of the pressure sensor 3, and a regulating ball valve 2 is installed in the middle of the first bypass; a second bypass is provided on one side of the pressure regulating ball valve 6, and one end of the second bypass is connected to the input end of the pressure regulating ball valve 6, and the other end of the second bypass is connected to the input end of the high and low temperature testing machine 1, and a regulating ball valve 2 8 is installed in the middle of the second bypass; when the pressure pulse function is not needed, the regulating ball valve 1 2 and the regulating ball valve 2 8 are switched on, and the high and low temperature testing machine 1 outputs a fluid with a constant flow and pressure; when the pressure pulse function is needed, the regulating ball valve 1 2 and the regulating ball valve 2 8 are switched off, and the high and low temperature testing machine 1 outputs a fluid with a constant flow and pressure, so that the user can choose whether to use the pressure pulse function.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A device for realizing water pressure pulse by means of a servo valve, comprising a test piece (4), characterized in that: A pulse pressure output component is provided on one side of the measured object (4), and the pulse pressure output component comprises: A high and low temperature testing machine (1), wherein the high and low temperature testing machine (1) is arranged on the side of the tested object (4); and the high and low temperature testing machine (1) is capable of outputting a fluid with a constant flow rate and a certain pressure; A servo valve (5), wherein the input end of the servo valve (5) is connected to the output end of the high and low temperature testing machine (1), and the servo valve (5) is capable of diverting a fluid with a constant flow rate and a certain pressure, and one of the output ends of the servo valve (5) is connected to the input end of the high and low temperature testing machine (1). A pressure sensor (3), wherein the input end of the pressure sensor (3) is connected to the other output end of the servo valve (5), and the pressure sensor (3) can read the pressure value in real time and transmit it back to the PLC; A pressure regulating ball valve (6), wherein the input end of the pressure regulating ball valve (6) is connected to the output end of the pressure sensor (3), and the tested object (4) is located between the input end of the pressure regulating ball valve (6) and the output end of the pressure sensor (3), and the output end of the pressure regulating ball valve (6) is connected to the input end of the high and low temperature testing machine (1).

2. A device for realizing water pressure pulse by servo valve according to claim 1, characterized in that: A one-way valve (7) is provided between the output end of the pressure regulating ball valve (6) and the input end of the high and low temperature testing machine (1).

3. The device for realizing water pressure pulse by servo valve according to claim 1, characterized in that: A first bypass is provided on one side of the servo valve (5), one end of the first bypass is connected to the output end of the high and low temperature testing machine (1), the other end of the first bypass is connected to the input end of the pressure sensor (3), and a regulating ball valve (2) is installed in the middle of the first bypass.

4. A device for realizing water pressure pulse through a servo valve according to claim 1 or 2, characterized in that: A second bypass is provided on one side of the pressure regulating ball valve (6), one end of the second bypass is connected to the input end of the pressure regulating ball valve (6), and the other end of the second bypass is connected to the input end of the high and low temperature testing machine (1), and a regulating ball valve 2 (8) is installed in the middle of the second bypass.

5. The device for realizing water pressure pulse by servo valve according to claim 1, characterized in that: The servo valve (5) realizes a pressure pulse function for the test piece (4) by adjusting the ratio of the fluid in two branches, one of which enters the test piece (4) and the other returns to the high and low temperature testing machine (1).

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