Pressure pulse test experimental device

Abstract

The utility model discloses a pressure pulse test experiment device, which comprises pulse experiment equipment, the pulse experiment equipment comprises a butt joint assembly, a refrigeration unit, a liquid supply unit and a pipeline, the butt joint assembly is used for being connected with a component to be detected, and the liquid supply unit is used for inputting pulse type water pressure to the component to be detected on the butt joint assembly. The refrigerating unit is used for refrigerating and cooling liquid flowing back from the butt joint assembly, the liquid inlet pipe and the liquid outlet pipe are fixedly connected to the end of the test carrier, and the liquid outlet pipe is fixedly connected with a servo valve. By means of the arrangement mode of the butt joint assembly, the refrigeration unit and the liquid supply unit, the refrigeration unit provides a cold source for the whole device, the temperature sensor in the water tank senses the temperature change in the water tank and uploads the temperature change to the temperature controller, and the temperature controller controls the output power of the compressor to adjust the output power of the compressor. And the temperature of the water tank is always controlled in a relatively low temperature range, so that the stability of water temperature during pulse testing of the detection equipment is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure pulse testing, in particular to a pressure pulse testing experimental device. Background Art

[0002] The pressure pulse test experimental device is a device used for pulse test experiments on hydraulic hoses and other hydraulic components. It usually uses a pump body and a solenoid valve to control the rate and pressure of liquid flow, so that the equipment to be tested undergoes a liquid impact experiment with a certain pulse and pressure.

[0003] And during the pressure pulse test experiment, the pulse liquid is usually stored in a water tank, and after the liquid undergoes the pulse test, it flows back to the inside of the water tank. However, after the liquid flows back in the pulse test, the liquid temperature will rise due to the pressure and equipment impact. The liquid with increased temperature will affect the accuracy of the detection equipment, and it is not convenient to cool the returned liquid to ensure the stability of the liquid pressure pulse test temperature. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure pulse test experimental device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure pulse test experimental device, comprising a pulse experimental device, the pulse experimental device comprising a docking assembly, a refrigeration unit, a liquid supply unit and a pipeline, the docking assembly is used to connect with the components to be tested, the liquid supply unit is used to input pulsed water pressure to the components to be tested on the docking assembly, and the refrigeration unit is used to cool the liquid refluxed from the docking assembly;

[0006] The docking assembly comprises a test carrier, a liquid inlet pipe and a liquid outlet pipe, wherein the liquid inlet pipe and the liquid outlet pipe are fixedly connected to the end of the test carrier.

[0007] Preferably, a pressure regulating ball valve is installed on the liquid inlet pipe, a servo valve is fixedly connected to the liquid outlet pipe, and both the liquid inlet pipe and the liquid outlet pipe are connected to external pipelines, and an external ball valve is arranged on the external pipeline.

[0008] Preferably, the refrigeration unit includes a single-stage compressor, an air outlet shock absorber pipe, an oil-gas separator, a shell and tube condenser, a liquid storage tank, a drying filter, a first plate evaporator and a second plate evaporator, one side of the single-stage compressor is connected to the air outlet shock absorber pipe, one side of the air outlet shock absorber pipe is connected to the oil-gas separator, the shell and tube condenser is connected to the liquid storage tank, and the liquid storage tank is connected to the drying filter.

[0009] Preferably, the other side of the single-stage compressor is connected to a return air shock absorber pipe, the return air shock absorber pipe is connected to a gas-liquid separator, the return air shock absorber pipe is connected to a bypass solenoid valve through a pipeline and the oil-gas separator, the bypass solenoid valve is connected to a capillary tube, and a refrigeration solenoid valve and a refrigeration expansion valve are arranged between the drying filter and the first plate evaporator.

[0010] Preferably, a liquid injection solenoid valve and a liquid injection expansion valve are arranged between the gas-liquid separator and the drying filter, a high and low pressure controller is connected between the second plate evaporator and the shell and tube condenser through a pipeline, a low pressure indicator is arranged between the high and low pressure controller and the second plate evaporator, a high pressure indicator is arranged between the high and low pressure controller and the shell and tube condenser, a cooling water filter, a flow regulating valve and a flow switch are arranged on one side of the shell and tube condenser, the flow regulating valve is connected to the cooling water inlet, and the flow switch is connected to the cooling water outlet.

[0011] Preferably, the liquid supply unit includes a circulating water tank, an internal circulation pump, an external circulation pump, a Y-type filter, a liquid outlet ball valve and a liquid return port ball valve, the circulating water tank is connected to the refrigeration unit and the docking assembly, the internal circulation pump is installed between the circulating water tank and the refrigeration unit, the external circulation pump is installed between the circulating water tank and the liquid inlet pipe, the Y-type filter and the liquid outlet ball valve are installed on the liquid inlet pipe, and the liquid return port ball valve is installed on the liquid outlet pipe.

[0012] Preferably, the liquid supply unit also includes a purge port ball valve, a pressure differential regulating valve, a liquid adding funnel and a heating appliance, the purge port ball valve is installed on the liquid outlet pipe, the purge port ball valve is connected to a liquid adding port, the pressure differential regulating valve is installed between the circulating water tank and the liquid outlet pipe, and the liquid adding funnel and the heating appliance are installed on the circulating water tank.

[0013] Technical effects and advantages of the utility model:

[0014] The utility model utilizes the setting mode of docking components, refrigeration units and liquid supply units. The refrigeration unit provides a cold source for the entire equipment, and the temperature sensor in the water tank senses the temperature change in the water tank and uploads it to the temperature controller. The temperature controller controls the output power of the compressor to always control the temperature of the water tank within a lower temperature range, thereby ensuring the stability of the water temperature during the pulse test of the detection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 For this utility model Figure 1 Enlarged structural diagram at A in the middle.

[0017] Figure 3 For this utility model Figure 1 Enlarged structural diagram at B in the middle.

[0018] Figure 4 For this utility model Figure 1 Enlarged structural diagram at point C in the middle.

[0019] Figure 5 This is the pulse pressure waveform diagram of the utility model.

[0020] In the figure: 1. Pulse test equipment; 11. Docking assembly; 111. Test carrier; 112. Liquid inlet pipe; 113. Liquid outlet pipe; 114. Pressure regulating ball valve; 115. Servo valve; 116. External pipeline; 117. External ball valve; 12. Refrigeration unit; 121. Single-stage compressor; 122. Air outlet shock absorber pipe; 123. Oil-gas separator; 124. Shell and tube condenser; 125. Liquid storage tank; 126. Dry filter; 127. Refrigeration solenoid valve; 128. Refrigeration expansion valve; 129. Bypass solenoid valve; 1210. Capillary tube; 1211. First plate evaporator; 1212. Second plate evaporator; 12 13. Liquid injection solenoid valve; 1214. Liquid injection expansion valve; 1215. Gas-liquid separator; 1216. Return air shock absorber pipe; 1217. Low pressure indicator; 1218. High and low pressure controller; 1219. High pressure indicator; 1220. Cooling water filter; 1221. Flow control valve; 1223. Flow switch; 13. Liquid supply unit; 131. Circulating water tank; 132. Internal circulation pump; 133. External circulation pump; 134. Y-type filter; 135. Liquid outlet ball valve; 136. Liquid return outlet ball valve; 137. Purge outlet ball valve; 138. Pressure difference regulating valve; 139. Liquid adding funnel; 1310. Heating appliance. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model provides Figure 1-5A pressure pulse test experimental device shown includes a pulse experimental device 1, which includes a docking component 11, a refrigeration unit 12, a liquid supply unit 13 and a pipeline. The docking component 11 is used to connect with the components to be tested, the liquid supply unit 13 is used to input pulse water pressure to the components to be tested on the docking component 11, and the refrigeration unit 12 is used to cool the liquid refluxed from the docking component 11. The pulse experimental device 1 is an independent system. This device is installed in a box to form an independent module. The box has universal wheels at the bottom to facilitate the movement of the coolant temperature control device. The device realizes the circulation of the test liquid of the device under test through the connecting pipeline, thereby taking away the heat generated when the load is working or completing the heating of the load. This device uses 304 stainless steel pipes with chucks to increase the service life of the equipment pipelines, reduce the maintenance time of each component of the equipment, and reduce the manual maintenance cost.

[0023] Specifically, the docking assembly 11 includes a test carrier 111, a liquid inlet pipe 112 and a liquid outlet pipe 113, the liquid inlet pipe 112 and the liquid outlet pipe 113 are fixedly connected to the end of the test carrier 111, a pressure-regulating ball valve 114 is installed on the liquid inlet pipe 112, a servo valve 115 is fixedly connected to the liquid outlet pipe 113, both the liquid inlet pipe 112 and the liquid outlet pipe 113 are connected to an external pipeline 116, and an external ball valve 117 is provided on the external pipeline 116, so that the component to be tested is installed on the test carrier 111, and the liquid supply unit 13 inputs a pulse liquid into the component to be tested through the liquid inlet pipe 112, so as to detect the sealing of the component to be tested.

[0024] In particular, the refrigeration unit 12 includes a single-stage compressor 121, an air outlet shock-absorbing pipe 122, an oil-gas separator 123, a shell-and-tube condenser 124, a liquid storage tank 125, a drying filter 126, a first plate evaporator 1211 and a second plate evaporator 1212. The first plate evaporator 1211 and the second plate evaporator 1212 can dissipate heat in the flowing liquid, and the first plate evaporator 1211 and the second plate evaporator 1212 are connected in parallel with pipes to speed up the efficiency of liquid heat dissipation. The side of the single-stage compressor 121 is connected to the air outlet shock-absorbing pipe 122, and the liquid in the pipeline can be cooled again under the action of the single-stage compressor 121 and the shell and tube condenser 124. One side of the air outlet shock-absorbing pipe 122 is connected to the oil-gas separator 123, the shell and tube condenser 124 is connected to the liquid storage tank 125, the liquid storage tank 125 is connected to the drying filter 126, and the other side of the single-stage compressor 121 is connected to the return air shock-absorbing pipe 1216, the return air shock-absorbing pipe 1216 is connected to the gas-liquid separator 1215, and the return air shock-absorbing pipe 1216 is connected to the oil-gas separator 123 through a pipeline. There is a bypass electromagnetic valve 129, the bypass electromagnetic valve 129 is connected to a capillary tube 1210, a refrigeration electromagnetic valve 127 and a refrigeration expansion valve 128 are arranged between the drying filter 126 and the first plate evaporator 1211, a liquid injection electromagnetic valve 1213 and a liquid injection expansion valve 1214 are arranged between the gas-liquid separator 1215 and the drying filter 126, a high-low pressure controller 1218 is connected between the second plate evaporator 1212 and the shell and tube condenser 124 through a pipeline, and a low-pressure controller 1218 is arranged between the high-low pressure controller 1218 and the second plate evaporator 1212. A high-pressure indicator 1217 is provided between the high- and low-pressure controller 1218 and the shell and tube condenser 124. The high- and low-pressure controller 1218 can detect the internal pressure of the pipeline through the high-pressure indicator 1219 and the low-pressure indicator 1217, thereby controlling the operation of the valve body to change the pressure inside the pipeline. A cooling water filter 1220, a flow regulating valve 1221 and a flow switch 1223 are provided on one side of the shell and tube condenser 124. The flow regulating valve 1221 is connected to the cooling water inlet, and the flow switch 1223 is connected to the cooling water outlet.

[0025] Furthermore, the liquid supply unit 13 includes a circulating water tank 131, an internal circulating pump 132, an external circulating pump 133, a Y-type filter 134, a liquid outlet ball valve 135 and a liquid return ball valve 136. The circulating water tank 131 is connected to the refrigeration unit 12 and the docking assembly 11. The circulating water tank 131 can store the liquid required for the liquid pulse pressure detection of the component to be detected, and the liquid inside the circulating water tank 131 can be transported to the inside of the docking assembly 11 through the external circulating pump 133 to detect the components to be detected. The liquid inside the circulating water tank 131 can be transported to the inside of the refrigeration unit 12 through the internal circulating pump 132, thereby cooling the liquid inside the circulating water tank 131. The internal circulating pump 132 is installed between the circulating water tank 131 and the refrigeration unit 12. The pump 133 is installed between the circulating water tank 131 and the liquid inlet pipe 112, the Y-type filter 134 and the liquid outlet ball valve 135 are installed on the liquid inlet pipe 112, the return liquid outlet ball valve 136 is installed on the liquid outlet pipe 113, the liquid supply unit 13 also includes a purge port ball valve 137, a pressure difference regulating valve 138, a liquid adding funnel 139 and a heating appliance 1310, the liquid adding funnel 139 can directly add liquid to the liquid supply unit 13, the liquid adding port on the purge port ball valve 137 can directly add liquid to the inside of the pipeline, the purge port ball valve 137 is installed on the liquid outlet pipe 113, the purge port ball valve 137 is connected with a liquid adding port, the pressure difference regulating valve 138 is installed between the circulating water tank 131 and the liquid outlet pipe 113, the liquid adding funnel 139 and the heating appliance 1310 are installed on the circulating water tank 131.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or 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 invention should be included in the protection scope of the present invention.

Claims

1. A pressure pulse test experimental device, characterized in that: The invention comprises a pulse test device (1), wherein the pulse test device (1) comprises a docking component (11), a refrigeration unit (12), a liquid supply unit (13) and a pipeline, wherein the docking component (11) is used to connect with a component to be tested, the liquid supply unit (13) is used to input pulsed water pressure to the component to be tested on the docking component (11), and the refrigeration unit (12) is used to cool and reduce the temperature of liquid refluxed from the docking component (11); The docking assembly (11) comprises a test carrier (111), a liquid inlet pipe (112) and a liquid outlet pipe (113), wherein the liquid inlet pipe (112) and the liquid outlet pipe (113) are fixedly connected to the ends of the test carrier (111).

2. A pressure pulse test experimental device according to claim 1, characterized in that: A pressure regulating ball valve (114) is installed on the liquid inlet pipe (112), a servo valve (115) is fixedly connected to the liquid outlet pipe (113), and both the liquid inlet pipe (112) and the liquid outlet pipe (113) are connected to an external pipeline (116), and an external ball valve (117) is arranged on the external pipeline (116).

3. A pressure pulse test experimental device according to claim 1, characterized in that: The refrigeration unit (12) comprises a single-stage compressor (121), an air outlet shock-absorbing pipe (122), an oil-gas separator (123), a shell and tube condenser (124), a liquid storage tank (125), a drying filter (126), a first plate evaporator (1211), and a second plate evaporator (1212); one side of the single-stage compressor (121) is in communication with the air outlet shock-absorbing pipe (122); one side of the air outlet shock-absorbing pipe (122) is connected to the oil-gas separator (123); the shell and tube condenser (124) is connected to the liquid storage tank (125); and the liquid storage tank (125) is connected to the drying filter (126).

4. A pressure pulse test experimental device according to claim 3, characterized in that: The other side of the single-stage compressor (121) is connected to a return air shock absorber pipe (1216), the return air shock absorber pipe (1216) is connected to a gas-liquid separator (1215), the return air shock absorber pipe (1216) is connected to a bypass solenoid valve (129) through a pipeline and to the oil-gas separator (123), the bypass solenoid valve (129) is connected to a capillary tube (1210), and a refrigeration solenoid valve (127) and a refrigeration expansion valve (128) are provided between the drying filter (126) and the first plate evaporator (1211).

5. A pressure pulse test experimental device according to claim 4, characterized in that: A liquid injection solenoid valve (1213) and a liquid injection expansion valve (1214) are provided between the gas-liquid separator (1215) and the drying filter (126); a high-low pressure controller (1218) is connected between the second plate evaporator (1212) and the shell and tube condenser (124) via a pipeline; a low pressure indicator (1217) is provided between the high-low pressure controller (1218) and the second plate evaporator (1212); a high pressure indicator (1219) is provided between the high-low pressure controller (1218) and the shell and tube condenser (124); a cooling water filter (1220), a flow regulating valve (1221) and a flow switch (1223) are provided on one side of the shell and tube condenser (124); the flow regulating valve (1221) is connected to a cooling water inlet, and the flow switch (1223) is connected to a cooling water outlet.

6. The pressure pulse test experimental device according to claim 1, characterized in that: The liquid supply unit (13) comprises a circulating water tank (131), an internal circulating pump (132), an external circulating pump (133), a Y-type filter (134), a liquid outlet ball valve (135) and a liquid return outlet ball valve (136); the circulating water tank (131) is connected to the refrigeration unit (12) and the docking assembly (11); the internal circulating pump (132) is installed between the circulating water tank (131) and the refrigeration unit (12); the external circulating pump (133) is installed between the circulating water tank (131) and the liquid inlet pipe (112); the Y-type filter (134) and the liquid outlet ball valve (135) are installed on the liquid inlet pipe (112); and the liquid return outlet ball valve (136) is installed on the liquid outlet pipe (113).

7. A pressure pulse test experimental device according to claim 6, characterized in that: The liquid supply unit (13) further comprises a purge port ball valve (137), a pressure differential regulating valve (138), a liquid adding funnel (139) and a heating appliance (1310); the purge port ball valve (137) is installed on the liquid outlet pipe (113); the purge port ball valve (137) is connected to a liquid adding port; the pressure differential regulating valve (138) is installed between the circulating water tank (131) and the liquid outlet pipe (113); and the liquid adding funnel (139) and the heating appliance (1310) are installed on the circulating water tank (131).

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