High-precision multi-range static pressure bursting test device

Abstract

The utility model relates to a high-precision multi-range static pressure bursting test device, which relates to the technical field of instrument testing, and comprises a pressure testing pipeline, and a plurality of pressure gauges for testing are arranged on the pressure testing pipeline. The pressure testing pipeline is respectively in pipeline connection with a pre-pressing assembly used for preliminarily filling oil into the pressure testing pipe and pre-pressing the pressure testing pipe, a low-pressure input assembly used for outputting low pressure and a high-pressure input assembly used for outputting high pressure, and the low-pressure input assembly and the high-pressure input assembly are in pipeline connection with an input gas source. According to the invention, double pressure input assemblies including the low-pressure input assembly and the high-pressure input assembly are adopted, and the pressure input by the double pressure input assemblies is matched, so that the range of the pressure test is increased.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of instrument testing, in particular to a high-precision multi-range static pressure burst test device. BACKGROUND

[0002] During the production process of a pressure gauge spring body, static pressure process and burst test need to be performed. When the existing pressure gauge spring body is subjected to static pressure and burst test, due to factors of a control system and an execution component, the control system adopts a traditional relay contactor to control a motor to drive a pressure pump, and starting and stopping rely on contact point switches of a pressure gauge, so that the response speed is slow, overshoot is prone to existing, and the peak pressure during burst is not convenient to observe.

[0003] In the related art, only five kinds of products can be tested on one device, the pressure control precision is not high, multi-range pressure test cannot be performed, and when the pressure test range is replaced, accessories need to be replaced. SUMMARY

[0004] In order to improve the range of pressure test, the application aims to provide a high-precision multi-range static pressure burst test device.

[0005] The high-precision multi-range static pressure burst test device provided by the application adopts the following technical scheme:

[0006] The high-precision multi-range static pressure burst test device comprises a pressure test pipeline, a plurality of pressure gauges for test are arranged on the pressure test pipeline, a pre-pressing assembly for initially pre-pressing the pressure test pipeline with oil, a low-pressure input assembly for outputting low pressure, and a high-pressure input assembly for outputting high pressure are respectively connected to the pressure test pipeline in a pipeline mode, and the low-pressure input assembly and the high-pressure input assembly are connected with an input gas source in a pipeline mode.

[0007] By adopting the above technical scheme, the pressure test pipeline is pre-pressurized with oil by the pre-pressing assembly during test, so that the pressure test pipeline is filled with test oil, then the pressure test pipeline is supplied with pressure by the low-pressure input assembly and the high-pressure input assembly, and the pressure output by the low-pressure input assembly and the high-pressure input assembly is adjusted, so as to expand the pressure range of the test oil in the pressure test pipeline, thereby increasing the test range of the pressure gauge.

[0008] In addition, the test oil can quickly act on the pressure gauge after being subjected to pressure, so that the precision of pressure control can be effectively improved.

[0009] Optionally, the pre-pressing assembly comprises a pre-pressing pump, the input end of the pre-pressing pump is connected with a pre-pressing oil tank in a pipeline mode, the output end of the pre-pressing pump is connected with a pre-pressing check valve in a pipeline mode, and the pre-pressing check valve is connected with the pressure test pipeline.

[0010] By adopting the technical scheme, the pre-pressing pump is driven to send the test oil in the pre-pressing oil tank into the pressure test pipe to pre-press the pressure test pipe.

[0011] Optionally, the low-pressure input assembly comprises a low-pressure proportional pressure reducing valve connected with the input gas source pipeline, an output end of the low-pressure proportional pressure reducing valve is connected with a low-pressure gas-liquid booster through a pipeline, an output end of the low-pressure gas-liquid booster is connected with a low-pressure check valve through a pipeline, and the low-pressure check valve is connected with the pressure test pipe.

[0012] By adopting the technical scheme, the input gas source flows into the low-pressure proportional pressure reducing valve to adjust the gas pressure input into the low-pressure gas-liquid booster, so as to adjust the pressure output from the low-pressure gas-liquid booster into the pressure test pipe.

[0013] Optionally, the low-pressure gas-liquid booster is a 1:16 gas-liquid booster, and a low-pressure liquid supplement tank is connected with the 1:16 gas-liquid booster through a pipeline.

[0014] By adopting the technical scheme, the 1:16 gas-liquid booster converts the input gas pressure into oil pressure and outputs the oil pressure into the pressure test pipe after pressure boosting.

[0015] Optionally, the high-pressure input assembly comprises a high-pressure proportional pressure reducing valve connected with the input gas source pipeline, an output end of the high-pressure proportional pressure reducing valve is connected with a high-pressure gas-liquid booster through a pipeline, an output end of the high-pressure gas-liquid booster is connected with a high-pressure check valve through a pipeline, and the high-pressure check valve is connected with the pressure test pipe.

[0016] By adopting the technical scheme, the input gas source flows into the high-pressure proportional pressure reducing valve to adjust the gas pressure input into the high-pressure gas-liquid booster, so as to adjust the pressure output from the high-pressure gas-liquid booster into the pressure test pipe.

[0017] Optionally, the high-pressure gas-liquid booster is a 1:180 gas-liquid booster, and a high-pressure liquid supplement tank is connected with the 1:180 gas-liquid booster through a pipeline.

[0018] By adopting the technical scheme, the 1:180 gas-liquid booster converts the input gas pressure into oil pressure and outputs the oil pressure into the pressure test pipe after pressure boosting.

[0019] Optionally, the pressure test pipeline is provided with a pressure transmitter for detecting the pressure in the pipeline.

[0020] By adopting the technical scheme, the pressure in the pressure test pipeline can be observed by the pressure transmitter, which is convenient for the staff to use.

[0021] Optionally, the pressure test pipeline is connected with a pressure relief valve, and the pressure relief valve is connected with a pressure relief oil tank.

[0022] By adopting the technical scheme, the pressure relief valve is opened after the test is completed, and the test oil in the pressure test pipeline is discharged, so that the staff tests the next group of pressure gauges.

[0023] To sum up, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The present application adopts a low-pressure input assembly and a high-pressure input assembly dual-pressure input assembly, and increases the range of pressure testing by matching the pressure input by the dual-pressure input assembly;

[0025] 2. The present application adopts a unique design, which is simple to operate and has high pressure accuracy, and can effectively improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the present application;

[0027] BRIEF DESCRIPTION OF DRAWINGS: 1, pressure test pipeline; 2, pre-pressing assembly; 201, pre-pressing pump; 202, pre-pressing oil tank; 203, pre-pressing one-way valve; 3, low-pressure input assembly; 301, low-pressure proportional pressure reducing valve; 302, low-pressure gas-liquid booster; 303, low-pressure one-way valve; 304, low-pressure liquid supplement tank; 4, high-pressure input assembly; 401, high-pressure proportional pressure reducing valve; 402, high-pressure gas-liquid booster; 403, high-pressure one-way valve; 404, high-pressure liquid supplement tank; 5, input gas source; 6, pressure transmitter; 7, test piece connecting pipe; 8, connecting hole; 9, pressure relief valve; 10, oil outlet pipe; 11, pressure relief oil tank. DETAILED DESCRIPTION

[0028] The following will be described in detail in combination with the accompanying Figure 1 The present application will be further described in detail.

[0029] A high-precision multi-range static pressure blasting test device, referring to Figure 1 , comprising a pressure test pipeline 1, a plurality of pressure gauges for testing are arranged on the pressure test pipeline 1, a pre-pressing assembly 2 for initially pre-pressing the pressure test pipeline 1, a low-pressure input assembly 3 for outputting low oil pressure to the pressure test pipeline 1, and a high-pressure input assembly 4 for outputting high oil pressure to the pressure test pipeline 1 are respectively connected to the pressure test pipeline 1, and the low-pressure input assembly 3 and the high-pressure input assembly 4 are connected to an input gas source 5.

[0030] The pre-pressing assembly 2 comprises a pre-pressing pump 201, the input end of the pre-pressing pump 201 is fixedly connected with a pre-pressing oil tank 202 through a pipeline, the output end of the pre-pressing pump 201 is fixedly connected with the input end of a pre-pressing one-way valve 203 through a pipeline, and the output end of the pre-pressing one-way valve 203 is fixedly connected with the pressure test pipeline 1.

[0031] The low-pressure input assembly 3 comprises a low-pressure proportional pressure-reducing valve 301, and an input end of the low-pressure proportional pressure-reducing valve 301 is fixedly connected with an output end of the input gas source 5 through a pipeline. An output end of the low-pressure proportional pressure-reducing valve 301 is fixedly connected with a low-pressure gas-liquid booster 302 with a specification of 1:16 through a pipeline, and is connected with an input end of the low-pressure gas-liquid booster 302 through a pipeline.

[0032] An input end of a low-pressure check valve 303 is connected with an output end of the low-pressure gas-liquid booster 302 through a pipeline, and an output end of the low-pressure check valve 303 is fixedly connected with the pressure test pipeline 1. The low-pressure gas-liquid booster 302 is connected with a low-pressure liquid supplement tank 304 through a pipeline, and the low-pressure liquid supplement tank 304 is used for supplementing test oil for the low-pressure gas-liquid booster 302.

[0033] The high-pressure input assembly 4 comprises a high-pressure proportional pressure-reducing valve 401, and an input end of the high-pressure proportional pressure-reducing valve 401 is fixedly connected with an output end of the input gas source 5 through a pipeline. An output end of the high-pressure proportional pressure-reducing valve 401 is fixedly connected with a high-pressure gas-liquid booster 402 with a specification of 1:180 through a pipeline, and is connected with an input end of the high-pressure gas-liquid booster 402 through a pipeline.

[0034] An input end of a high-pressure check valve 403 is connected with an output end of the high-pressure gas-liquid booster 402 through a pipeline, and an output end of the high-pressure check valve 403 is fixedly connected with the pressure test pipeline 1. The high-pressure gas-liquid booster 402 is connected with a high-pressure liquid supplement tank 404 through a pipeline, and the high-pressure liquid supplement tank 404 is used for supplementing test oil for the high-pressure gas-liquid booster 402.

[0035] The pressure test pipeline 1 is connected with a pressure transmitter 6 for detecting oil pressure in the pipeline through a pipeline. The pressure test pipeline 1 is connected with four test piece connecting pipes 7 through pipelines, and a plurality of connecting holes 8 are formed in the test piece connecting pipes 7. The connecting holes 8 are connected with pressure gauges to be tested through pipelines.

[0036] The four test piece connecting pipes 7 are connected with input ends of relief valves 9, and output ends of the relief valves 9 are connected with oil outlet pipes 10. The oil outlet pipes 10 are connected with a relief oil tank 11 through a pipeline.

[0037] The implementation principle of the embodiment is as follows:

[0038] After the pre-pressing pump 201 is started, test oil in the pre-pressing tank 202 is sent into the pressure test pipeline 1 through the pre-pressing check valve 203, and the pressure test pipeline 1 is filled with the test oil. Meanwhile, backflow of the test oil to the pre-pressing pump 201 is avoided.

[0039] Start the input gas source 5 and input 0.8 MPa gas pressure source to the low-pressure proportional pressure reducing valve 301 and the high-pressure proportional pressure reducing valve 401, and then control the gas pressure input into the corresponding gas-liquid booster according to the range of the low-pressure proportional pressure reducing valve 301 or the high-pressure proportional pressure reducing valve 401, and convert the gas pressure into oil pressure by the corresponding gas-liquid booster and input into the pressure test pipeline 1.

[0040] The low-pressure gas-liquid booster 302 has a specification of 1:16, which can output 1.6 MPa, 2.5 MPa, 4 MPa, 6 MPa, and 10 MPa oil pressure in cooperation with the low-pressure proportional pressure reducing valve 301. The high-pressure gas-liquid booster 402 has a specification of 1:180, which can output 16 MPa, 25 MPa, 40 MPa, 60 MPa, and 100 MPa oil pressure in cooperation with the high-pressure proportional pressure reducing valve 401.

[0041] The test oil output by the low-pressure gas-liquid booster 302 or the high-pressure gas-liquid booster 402 can immediately push the test oil inside the pressure test pipeline to make the pressure gauge quickly react.

[0042] After the test is completed, open the pressure relief valve 9 to make the test oil in the pressure test pipeline flow into the pressure relief oil tank 11 to provide space for the test of pressure gauges of other specifications.

[0043] The embodiments of the specific embodiment are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, wherein the same parts are indicated by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A high-precision multi-range static pressure burst test device, comprising a pressure test pipeline (1), a plurality of pressure gauges for testing are arranged on the pressure test pipeline (1), characterized in that: The pressure test pipeline (1) is respectively connected with a pre-pressing assembly (2) for initially pre-pressing the pressure test pipeline (1) with oil, a low-pressure input assembly (3) for outputting low pressure, and a high-pressure input assembly (4) for outputting high pressure.

2. The high-precision multi-range hydrostatic burst test device according to claim 1, characterized in that: The pre-pressing assembly (2) comprises a pre-pressing pump (201), the input end of the pre-pressing pump (201) is connected with a pre-pressing oil tank (202) through a pipeline, and the output end of the pre-pressing pump (201) is connected with a pre-pressing check valve (203), and the pre-pressing check valve (203) is connected with the pressure test pipeline (1).

3. The high-precision multi-range hydrostatic burst test device according to claim 1, characterized in that: The low-pressure input assembly (3) comprises a low-pressure proportional pressure reducing valve (301) connected with the input gas source (5) through a pipeline, the output end of the low-pressure proportional pressure reducing valve (301) is connected with a low-pressure gas-liquid booster (302) through a pipeline, the output end of the low-pressure gas-liquid booster (302) is connected with a low-pressure check valve (303) through a pipeline, and the low-pressure check valve (303) is connected with the pressure test pipeline (1).

4. The high-precision multi-range hydrostatic burst test device according to claim 3, characterized in that: The low-pressure gas-liquid booster (302) is a 1:16 gas-liquid booster, and the 1:16 gas-liquid booster is connected with a low-pressure liquid supplement oil tank (304) through a pipeline.

5. The high-precision multi-range hydrostatic burst test device of claim 1, wherein: The high-pressure input assembly (4) comprises a high-pressure proportional pressure reducing valve (401) connected with the input gas source (5) through a pipeline, the output end of the high-pressure proportional pressure reducing valve (401) is connected with a high-pressure gas-liquid booster (402) through a pipeline, the output end of the high-pressure gas-liquid booster (402) is connected with a high-pressure check valve (403) through a pipeline, and the high-pressure check valve (403) is connected with the pressure test pipeline (1).

6. The high-precision multi-range hydrostatic burst test device according to claim 5, characterized in that: The high-pressure gas-liquid booster (402) is a 1:180 gas-liquid booster, and the 1:180 gas-liquid booster is connected with a high-pressure liquid supplement oil tank (404) through a pipeline.

7. The high-precision multi-range hydrostatic burst test device of claim 1, wherein: The pressure test pipeline (1) is provided with a pressure transmitter (6) for detecting the pressure in the pipeline.

8. The high-precision multi-range hydrostatic burst test device of claim 1, wherein: The pressure test pipeline (1) is connected with a pressure relief valve (9), and the pressure relief valve (9) is connected with a pressure relief oil tank (11).

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