Multipurpose pressure testing system and mounting structure thereof

Abstract

The utility model relates to a multipurpose pressure test system and an installation structure thereof, and relates to the technical field of pressure test.The multipurpose pressure test system comprises an oil storage tank, a hydraulic pump, a one-way valve, a throttling valve, an inlet stop valve and a test pipeline which are connected in sequence, the test pipeline is connected with the oil storage tank, and the oil storage tank is used for storing hydraulic oil; the testing pipeline comprises a testing pipeline and a meter testing pipeline, the testing pipeline and the meter testing pipeline are arranged between the inlet stop valve and the oil storage tank in parallel, the testing pipeline is used for testing pipe fittings, and the meter testing pipeline is used for testing meter fittings; a pressure sensor is arranged at an outlet of the inlet stop valve. The pressure testing system has the effect of being capable of detecting the large-volume pressure device and the high-precision pressure gauge at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of pressure testing, and in particular to a multi-purpose pressure testing system and an installation structure thereof. Background Art

[0002] Pressure testing equipment is used to perform pressure tests on pressure devices, such as pipes or pressure gauges, to verify or calibrate them. With the development of the pressure device industry, the requirements for pressure testing equipment are becoming increasingly stringent. Existing pressure testing equipment has a single function and can typically only test one type of pressure device. It lacks the ability to simultaneously test large-volume pressure devices and high-precision pressure gauges.

[0003] Based on the above analysis, there is an urgent need for a multi-purpose pressure testing system that can test both large-volume pressure devices and high-precision pressure gauges. Utility Model Content

[0004] In order to enable the pressure testing system to have the ability to detect large-volume pressure devices and high-precision pressure gauges at the same time, the present application provides a multi-purpose pressure testing system and its installation structure.

[0005] In a first aspect, the present application provides a multi-purpose pressure testing system, which adopts the following technical solutions:

[0006] A multi-purpose pressure testing system includes an oil storage tank, a hydraulic pump, a one-way valve, a throttle valve, an inlet stop valve and a test pipeline connected in sequence, wherein the test pipeline is connected to the oil storage tank, and the oil storage tank is used to store hydraulic oil;

[0007] The test pipeline includes a test pipe pipeline and a meter test pipeline, and the test pipe pipeline and the meter test pipeline are arranged in parallel between the inlet stop valve and the oil storage tank;

[0008] The test pipe pipeline includes a first pipeline, a second pipeline and a test pipe outlet stop valve arranged in sequence. The first pipeline is connected to the inlet stop valve, the second pipeline is connected to the test pipe outlet stop valve, and the test pipe outlet stop valve is connected to the oil storage tank. The outlet of the first pipeline and the inlet of the second pipeline are used to install the tested pipe fitting;

[0009] The meter measuring pipeline includes a third pipeline and a meter measuring outlet stop valve connected in sequence, the third pipeline is connected to the inlet stop valve, the third pipeline is connected to a meter measuring port, the meter measuring port is used to install the meter to be measured, and the meter measuring outlet stop valve is connected to the oil storage tank;

[0010] A pressure sensor is provided at the outlet of the inlet stop valve;

[0011] When testing the meter, the outlet of the first pipeline is blocked; when testing the pipe, the meter inspection port is blocked.

[0012] By adopting the above technical solution, when testing a pipe fitting, the pipe fitting to be tested is installed between the first pipeline and the second pipeline, the pipe inspection outlet stop valve is closed, and the hydraulic pump supplies oil to the interior of the pipe fitting so that the pipe fitting is under hydraulic action. The pressure sensor detects the hydraulic pressure value to feedback the hydraulic pressure applied to the pipe fitting, thereby realizing the detection of the pipe fitting pressure. Then, the inlet stop valve is closed to keep the pipe fitting in a pressure-maintaining state, thereby realizing the pressure resistance test of the pipe fitting.

[0013] When testing the pressure gauge, install the pressure gauge to be tested on the gauge inspection port, close the gauge inspection outlet stop valve, and supply oil to the gauge inspection port with the hydraulic pump to put the pressure gauge under hydraulic action. The pressure sensor detects the hydraulic pressure value to feedback the hydraulic pressure on the gauge, thereby realizing the detection of the gauge pressure. This enables the pressure testing system to have the ability to detect large-volume pressure devices and high-precision pressure gauges at the same time.

[0014] Optionally, the outlet of the inlet stop valve is connected to a fine-tuning cylinder, the outlet of the inlet stop valve is communicated with the rodless chamber of the fine-tuning cylinder, the movable end of the fine-tuning cylinder is connected to a screw nut pair, and the nut of the screw nut pair is fixedly connected to the movable end of the fine-tuning cylinder.

[0015] By adopting the above technical solution, the fine-tuning cylinder driven by the screw-nut pair can finely adjust the change in pressure at the outlet of the inlet stop valve. After the hydraulic pump is pressurized, the pressure value output by the hydraulic pump usually has a slight difference from the preset pressure value. The screw-nut pair can drive the fine-tuning cylinder to contract to squeeze the hydraulic oil in the rodless cavity of the fine-tuning cylinder into the test pipeline. The squeezed part of the hydraulic oil can finely adjust the pressure value to reach the preset pressure value.

[0016] Optionally, a two-position three-way solenoid valve is arranged between the one-way valve and the throttle valve. The two-position three-way solenoid valve adopts a one-in-one-out normally closed setting. Interface 1 of the two-position three-way solenoid valve is connected to the throttle valve, interface 2 of the two-position three-way solenoid valve is connected to the one-way valve, and interface 3 of the two-position three-way solenoid valve is connected to the oil storage tank. When the coil of the two-position three-way solenoid valve is energized, interface 2 of the two-position three-way solenoid valve leads to interface 1, and interface 3 of the two-position three-way solenoid valve is closed. When the coil of the two-position three-way solenoid valve is de-energized, interface 2 of the two-position three-way solenoid valve is closed, and interface 1 of the two-position three-way solenoid valve leads to interface 3.

[0017] By adopting the above technical solution, the two-position three-way solenoid valve controls the system oil circuit, making the oil supply and pressure relief of the test system more convenient.

[0018] Optionally, an overflow valve is provided between the outlet of the hydraulic pump and the oil storage tank.

[0019] By adopting the above technical solution, the oil supply pressure of the test system is not easily overloaded.

[0020] Optionally, a liquid level sensor is provided in the oil storage tank, the liquid level sensor is electrically connected to a controller, the controller is electrically connected to an alarm, the liquid level sensor is used to output a liquid level signal, the controller responds to the liquid level signal, and is used to control the alarm to sound an alarm.

[0021] By adopting the above technical solution, the user can promptly know that the oil level in the oil storage tank is lower than the set oil level according to the alarm of the alarm, so that the oil storage tank can be replenished in time.

[0022] In a second aspect, the present application provides an installation structure for a multi-purpose pressure testing system, which adopts the following technical solutions:

[0023] A multi-purpose pressure test system installation structure, used for installing the multi-purpose pressure test system described above, comprising a control box assembly and a test box assembly;

[0024] The control box assembly includes an upper box, a lower box and a display operation cover, and the upper box includes an upper box shell and a bottom plate;

[0025] The bottom plate is arranged at the opening at the bottom end of the upper box shell, the upper box shell is arranged at the top end of the lower box body, and the display operation cover plate is arranged at the top end of the upper box shell;

[0026] The fine-tuning oil cylinder, screw nut pair, inlet stop valve, pipe inspection outlet stop valve, meter inspection outlet stop valve and pressure sensor are all installed on the bottom plate; among them, the screw of the screw nut pair is passed through the side wall of the upper box shell, and the valve stems of the inlet stop valve, pipe inspection outlet stop valve and meter inspection outlet stop valve are all passed through the display operation cover plate;

[0027] The oil storage tank, hydraulic pump, one-way valve, throttle valve and two-position three-way solenoid valve are all installed in the lower box;

[0028] The third pipeline and the meter inspection port are both installed in the upper box shell, wherein the meter inspection port is provided on the top of the upper box shell;

[0029] The test box assembly includes a test box and a test slot. The test box is installed on the same side of the upper box and the lower box, and the test slot is installed in the test box.

[0030] The first pipeline is installed on the bottom plate and passes through the upper box shell and the test box body. The second pipeline is installed in the test box body. One end of the second pipeline passes through the test slot and the other end passes through the test box body and the lower box body.

[0031] By adopting the above technical solution, the installation of the test system is realized through the upper box, the lower box and the test box, so that both pipe fittings and gauges are convenient for pressure testing. Through the modular installation method, the test system is convenient for transportation, so that the test system can be flexibly carried and used after installation.

[0032] Optionally, a first door panel is provided on a side of the upper box shell away from the position where the screw nut pair is inserted, and the pressure sensor is provided close to the first door panel. Opening the first door panel allows the outside to communicate with the interior of the upper box shell.

[0033] By adopting the above technical solution, the pressure sensor is easy to calibrate and verify.

[0034] Optionally, the bottom of the test tank is connected to a conical oil leakage tank, and the bottom of the oil leakage tank is connected to an oil leakage pipe, which is passed through the test box and the lower box. One end of the oil leakage pipe located in the lower box is connected to the oil storage tank.

[0035] By adopting the above technical solution, the hydraulic oil received in the test tank flows into the oil leakage tank, the oil leakage tank collects the hydraulic oil, and the hydraulic oil is returned to the oil storage tank through the oil leakage pipe, so that the hydraulic oil is easy to recycle.

[0036] Optionally, a protective cover is hinged on the top of the test box, and opening the protective cover allows the outside to communicate with the inside of the test box, and a pneumatic support rod is provided between the protective cover and the test box.

[0037] By adopting the above technical solution, the gas pressure strut makes it easy to open and close the protective cover, and the gas pressure strut can provide support force for the protective cover when the protective cover is opened, so that the user can install the pipe to be tested between the first pipeline and the second pipeline.

[0038] Optionally, the protective cover is provided with a transparent protective window, through which the situation inside the test box can be observed.

[0039] By adopting the above technical solution, the situation inside the test box can be observed through the protective window, so that the user can directly observe the pressure test situation of the pipe fitting.

[0040] In summary, this application includes at least one of the following beneficial technical effects:

[0041] 1. By setting up independent measuring pipes and measuring gauges, the pressure testing system can simultaneously detect large-volume pressure devices and high-precision pressure gauges;

[0042] 2. By setting the fine-tuning oil cylinder and the screw nut pair, the pressure value at the outlet of the inlet stop valve can be easily and accurately reached the preset pressure value;

[0043] 3. By arranging the upper box, the lower box and the test box, the test system is modularly installed, so that the test system is easy to install and easy to transport after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a structural diagram of a multi-purpose pressure testing system of the present application;

[0045] Figure 2 This is a structural diagram of the installation structure of a multi-purpose pressure testing system of the present application;

[0046] Figure 3 is a structural diagram of the test system of the present application installed on the mounting structure of the present application;

[0047] Figure 4 This is a structural diagram of the fine-tuning oil cylinder and the lead screw nut pair installed on the base plate;

[0048] Figure 5 This is a schematic diagram of the structure of the liquid level sensor, controller and alarm installed on the oil storage tank;

[0049] Figure 6 This is a structural schematic diagram of the installation structure of a multi-purpose pressure testing system of the present application from another perspective.

[0050] Description of reference numerals:

[0051] 1. Oil storage tank; 2. Hydraulic pump; 3. Check valve; 4. Throttle valve; 5. Inlet stop valve; 6. Test pipeline; 7. Pressure sensor; 101. Liquid level sensor; 102. Controller; 103. Alarm; 201. Overflow valve; 301. Two-position three-way solenoid valve; 501. Fine-tuning cylinder; 502. Screw nut pair; 601. Test pipeline; 6011. First pipeline; 6012. Second pipeline; 6013. Test outlet stop valve; 602. Measuring meter pipeline; 6021. Third Pipeline; 6022, meter inspection outlet stop valve; 6023, meter inspection port; 11, upper box body; 1101, upper box shell; 1102, bottom plate; 1103, first door panel; 12, lower box body; 1201, second door panel; 1202, casters; 13, display operation cover; 14, test box body; 1401, third door panel; 15, test slot; 1501, oil leakage slot; 1502, oil leakage pipe; 16, protective cover; 1601, gas pressure support rod; 1602, handle; 17, protective window. DETAILED DESCRIPTION

[0052] The following is combined with Figure 1-6 This application is described in further detail.

[0053] The present application embodiment discloses a multi-purpose pressure testing system. Figure 1A multi-purpose pressure testing system includes an oil storage tank 1, a hydraulic pump 2, a one-way valve 3, a throttle valve 4, an inlet stop valve 5 and a test pipeline 6 connected in sequence. The test pipeline 6 is connected to the oil storage tank 1, the oil storage tank 1 is used to store hydraulic oil, and a pressure sensor 7 is provided at the outlet of the inlet stop valve 5.

[0054] The hydraulic pump 2 draws the hydraulic oil from the oil storage tank 1 and supplies it to the test pipeline 6 through the one-way valve 3, the throttle valve 4, and the inlet stop valve 5 to provide test pressure to the test piece in the test pipeline 6. The pressure sensor 7 detects the hydraulic pressure value in the test pipeline 6 to feedback the hydraulic pressure exerted on the test piece. After the test, the hydraulic oil flows back to the oil storage tank 1 to be recycled.

[0055] Among them, the one-way valve 3 limits the backflow of hydraulic oil so that the pressure of the test system is not easy to drop; the throttle valve 4 can control the oil pressure pressurization speed of the test system so that the test system can meet the pressurization requirements of different test pieces; the inlet stop valve 5 can close the oil supply circuit. During the pressure test, the inlet stop valve 5 is closed to keep the oil circuit of the test system in a pressure-maintaining state.

[0056] Specifically, oil filters are provided between the oil storage tank 1 and the hydraulic pump 2 and between the oil storage tank 1 and the test pipeline 6. The oil filters filter out impurities carried in the hydraulic oil to keep the oil circuit of the test system clean.

[0057] Furthermore, the test pipeline 6 includes a measuring pipe pipeline 601 and a measuring meter pipeline 602. The measuring pipe pipeline 601 and the measuring meter pipeline 602 are arranged in parallel between the inlet stop valve 5 and the oil storage tank 1. The measuring pipe pipeline 601 is used to test large-volume pressure devices, such as pipes, and the measuring meter pipeline 602 is used to test high-precision pressure gauges. Through the measuring pipe pipeline 601 and the measuring meter pipeline 602, the pressure testing system can simultaneously have the ability to detect large-volume pressure devices and high-precision pressure gauges.

[0058] Specifically, the test pipe pipeline 601 includes a first pipeline 6011, a second pipeline 6012 and a test pipe outlet stop valve 6013 arranged in sequence. The first pipeline 6011 is connected to the inlet stop valve 5, the second pipeline 6012 is connected to the test pipe outlet stop valve 6013, and the test pipe outlet stop valve 6013 is connected to the oil storage tank 1. The outlet of the first pipeline 6011 and the inlet of the second pipeline 6012 are used to install the pipe fitting to be tested.

[0059] When testing pipe fittings, the pipe fitting to be tested is installed between the first pipeline 6011 and the second pipeline 6012, the pipe inspection outlet stop valve 6013 is closed, and the hydraulic pump 2 supplies oil to the inside of the pipe fitting to put the pipe fitting under hydraulic action to realize the pressure detection of the pipe fitting. Then, the inlet stop valve 5 is closed to put the pipe fitting in a pressure-maintaining state to realize the pressure resistance detection of the pipe fitting.

[0060] Specifically, the meter measuring pipeline 602 includes a third pipeline 6021 and a meter inspection outlet stop valve 6022 connected in sequence. The third pipeline 6021 is connected to the inlet stop valve 5. The third pipeline 6021 is connected to a meter inspection port 6023, which is used to install the meter to be measured. The meter inspection outlet stop valve 6022 is connected to the oil storage tank 1.

[0061] When testing the pressure gauge, install the pressure gauge to be tested on the gauge inspection port 6023, close the gauge inspection outlet stop valve 6022, and the hydraulic pump 2 supplies oil to the gauge inspection port 6023 to put the pressure gauge under hydraulic pressure to detect the gauge pressure.

[0062] In particular, when testing the meter, the outlet of the first pipeline 6011 is blocked, and when testing the pipe, the meter inspection port 6023 is blocked, so that the pipe and meter tests can be performed independently and are less likely to interfere with each other, thereby improving the test accuracy.

[0063] Furthermore, the outlet of the inlet stop valve 5 is connected to the fine-tuning cylinder 501, and the outlet of the inlet stop valve 5 is communicated with the rodless cavity of the fine-tuning cylinder 501. The movable end of the fine-tuning cylinder 501 is connected to the screw nut pair 502, and the nut of the screw nut pair 502 is fixedly connected to the movable end of the fine-tuning cylinder 501.

[0064] The fine-tuning cylinder 501 driven by the screw-nut pair 502 can finely adjust the change in pressure at the outlet of the inlet stop valve 5. After the hydraulic pump 2 is pressurized, the pressure value output by the hydraulic pump 2 usually has a slight difference from the preset pressure value. The screw-nut pair 502 can drive the fine-tuning cylinder 501 to contract to squeeze the hydraulic oil in the rodless cavity of the fine-tuning cylinder 501 into the test pipeline 6. The squeezed part of the hydraulic oil can finely adjust the pressure value to reach the preset pressure value.

[0065] In order to better control the pressure output and pressure relief of the test system, a two-position three-way solenoid valve 301 is arranged between the one-way valve 3 and the throttle valve 4. The two-position three-way solenoid valve 301 adopts a one-inlet and one-outlet normally closed setting. Interface 1 of the two-position three-way solenoid valve 301 is connected to the throttle valve 4, interface 2 of the two-position three-way solenoid valve 301 is connected to the one-way valve 3, and interface 3 of the two-position three-way solenoid valve 301 is connected to the oil tank 1.

[0066] An oil filter is also provided between the interface 3 of the two-position three-way solenoid valve 301 and the oil storage tank 1 to prevent impurities in the oil circuit of the test system from entering the oil storage tank 1 .

[0067] When the coil of the two-position three-way solenoid valve 301 is energized, interface 2 of the two-position three-way solenoid valve 301 is connected to interface 1, and interface 3 of the two-position three-way solenoid valve 301 is closed to achieve oil supply; when the coil of the two-position three-way solenoid valve 301 is de-energized, interface 2 of the two-position three-way solenoid valve 301 is closed, and interface 1 of the two-position three-way solenoid valve 301 is connected to interface 3 to achieve pressure relief. By regulating the system oil circuit through the two-position three-way solenoid valve 301, the oil supply and pressure relief of the test system are made more convenient.

[0068] In order to prevent the oil supply pressure of the test system from being overloaded, an overflow valve 201 is provided between the outlet of the hydraulic pump 2 and the oil storage tank 1 .

[0069] In order to be able to promptly know the amount of hydraulic oil in the oil storage tank 1, a liquid level sensor 101 is provided in the oil storage tank 1. The liquid level sensor 101 is electrically connected to a controller 102, and the controller 102 is electrically connected to an alarm 103. The liquid level sensor 101 is used to output a liquid level signal, and the controller 102 responds to the liquid level signal and is used to control the alarm 103 to issue an alarm; the user can promptly know that the oil level in the oil storage tank 1 is lower than the set oil level based on the alarm of the alarm 103, so that the oil storage tank 1 can be replenished in time.

[0070] The implementation principle of a multi-purpose pressure testing system in an embodiment of the present application is: when in use, the hydraulic pump 2 supplies hydraulic oil to the test pipeline 6, the test pipeline 6 is connected to the pipe fitting or the gauge, the hydraulic oil applies pressure to the pipe fitting or the gauge to perform a pressure test on the pipe fitting or the gauge, and the pressure sensor 7 feeds back the pressure value of the pipe fitting or the gauge, so that the pressure testing system can simultaneously have the ability to detect large-volume pressure devices and high-precision pressure gauges.

[0071] The embodiment of the present application also discloses an installation structure of a multi-purpose pressure testing system, which is used to install the above-mentioned multi-purpose pressure testing system.

[0072] Reference Figure 2 A multi-purpose pressure testing system installation structure includes a control box assembly and a test box assembly. The control box assembly is used to install components of the test system control loop, and the test box assembly is used to install components of the test system test loop. The control box assembly and the test box assembly cooperate to realize the modular installation of the entire test system, thereby facilitating the installation and transportation of the test system.

[0073] Specifically, refer to Figure 2 and Figure 3The control box assembly includes an upper box 11, a lower box 12 and a display operation cover 13. The upper box 11 includes an upper box shell 1101 and a bottom plate 1102. The top part of the upper box shell 1101 is tilted 15°, and the bottom plate 1102 is installed at the opening at the bottom end of the upper box shell 1101. The upper box shell 1101 is detachably installed on the top of the lower box 12 by bolts. The display operation cover 13 is set on the inclined part of the top of the upper box shell 1101. The display operation cover 13 is used to install a display screen, a communication interface and a button keyboard to facilitate users to operate the test system.

[0074] Reference Figure 2 、 Figure 3 and Figure 4 The fine-tuning cylinder 501, the screw-nut pair 502, the inlet stop valve 5, the pipe inspection outlet stop valve 6013, the meter inspection outlet stop valve 6022 and the pressure sensor 7 are all installed on the base plate 1102; wherein, the screw of the screw-nut pair 502 is passed through the side wall of the upper box shell 1101, and the end of the screw of the screw-nut pair 502 located outside the upper box shell 1101 is connected with a handwheel, so that the user can drive the screw of the screw-nut pair 502 to rotate, and the valve stems of the inlet stop valve 5, the pipe inspection outlet stop valve 6013 and the meter inspection outlet stop valve 6022 are all passed through the display operation cover 13, so that the user can operate the inlet stop valve 5, the pipe inspection outlet stop valve 6013 and the meter inspection outlet stop valve 6022.

[0075] Reference Figure 3 and Figure 5 The oil storage tank 1, hydraulic pump 2, one-way valve 3, throttle valve 4 and two-position three-way solenoid valve 301 are all installed in the lower box body 12. Among them, the liquid level sensor 101, controller 102 and alarm 103 are installed in the lower box body 12 together with the oil storage tank 1, and the overflow valve 201 is installed in the lower box body 12 together with the hydraulic pump 2, realizing the centralized installation of some components of the hydraulic oil supply and facilitating centralized maintenance of the oil supply components of the test system.

[0076] Further, refer to Figure 3 A first door panel 1103 is provided on the side of the upper box shell 1101 away from the position where the screw nut pair 502 is inserted, and the pressure sensor 7 is arranged close to the first door panel 1103. Opening the first door panel 1103 allows the outside to connect to the interior of the upper box shell 1101, thereby facilitating the calibration and verification of the pressure sensor 7.

[0077] Furthermore, refer to Figure 2 and Figure 6A second door panel 1201 is installed on the side wall of the lower box 12 close to the handwheel and the side wall away from the handwheel to facilitate the installation and maintenance of the parts in the lower box 12; four casters 1202 are installed at the bottom end of the lower box 12 to facilitate the movement of the lower box 12.

[0078] The upper box 11 and the lower box 12 realize the installation of the test system control loop and realize the modular installation of the test system control loop. The detachable connection between the upper box 11 and the lower box 12 facilitates the installation and transportation of the test system control loop.

[0079] Specifically, refer to Figure 3 The test box assembly includes a test box 14 and a test slot 15 . The test box 14 is detachably mounted on the same side of the upper box 11 and the lower box 12 by bolts, and the test slot 15 is mounted in the test box 14 .

[0080] The third pipeline 6021 and the meter inspection port 6023 are both installed in the upper box shell 1101, wherein the meter inspection port 6023 is arranged on the horizontal part of the top of the upper box shell 1101, realizing the installation of the pressure gauge test circuit. The meter inspection port 6023 is located at the top of the upper box shell 1101 to facilitate the user to install the pressure gauge. In this application, two meter inspection ports 6023 are provided to improve the detection efficiency of the pressure gauge.

[0081] The first pipeline 6011 is installed on the base plate 1102 and passes through the upper box shell 1101 and the test box 14. The second pipeline 6012 is installed in the test box 14. One end of the second pipeline 6012 passes through the test slot 15, and the other end passes through the test box 14 and the lower box 12, realizing the installation of the pipe fitting test circuit. The pipe fitting is installed between the first pipeline 6011 and the second pipeline 6012 in the test slot 15, so that the hydraulic oil after the pipe fitting test is easy to collect.

[0082] The upper box 11 and the test box 14 realize the installation of the test loop of the test system and realize the modular installation of the test loop of the test system. The test box 14 can be detachably connected to the upper box 11 and the lower box 12, which facilitates the installation and transportation of the test loop of the test system.

[0083] Further, refer to Figure 3 The bottom of the test tank 15 is connected to a conical oil leakage tank 1501, and the bottom of the oil leakage tank 1501 is connected to an oil leakage pipe 1502. The oil leakage pipe 1502 is arranged on the test box body 14 and the lower box body 12. One end of the oil leakage pipe 1502 located in the lower box body 12 is connected to the oil storage tank 1. An oil filter is also provided between the oil leakage pipe 1502 and the oil storage tank 1 to prevent impurities in the oil leakage tank 1501 from entering the oil storage tank 1.

[0084] The hydraulic oil received in the test tank 15 flows into the oil leakage tank 1501 . The oil leakage tank 1501 collects the hydraulic oil and returns the hydraulic oil to the oil storage tank 1 through the oil leakage pipe 1502 , so that the hydraulic oil can be easily recycled.

[0085] Reference Figure 3 The top portion of the test box 14 is tilted 15°. A protective cover 16 is hinged on the tilted portion of the test box 14. Opening the protective cover 16 allows the outside to communicate with the inside of the test box 14. A gas pressure strut 1601 is installed between the protective cover 16 and the test box 14. The gas pressure strut 1601 makes it easy to open and close the protective cover 16, and the gas pressure strut 1601 can provide support for the protective cover 16 when the protective cover 16 is opened, so that the user can install the pipe to be tested between the first pipeline 6011 and the second pipeline 6012.

[0086] A transparent protective window 17 is installed on the protective cover 16. The situation inside the test box 14 can be observed through the protective window 17, so that the user can directly observe the pressure test situation of the pipe. At the same time, the protective window 17 can protect the user. In this application, the protective window 17 is made of an acrylic transparent plate.

[0087] Furthermore, refer to Figure 2 and Figure 6 A handle 1602 is installed on the protective cover 16 to facilitate the user to open or close the protective cover 16; except for the side walls close to the upper box body 11 and the lower box body 12, the other three side walls of the test box 14 are installed with third door panels 1401 to facilitate the user to install components in the test box 14; casters 1202 are also installed at the bottom end of the test box 14 to facilitate the movement of the test box 14.

[0088] A multi-purpose pressure testing system installation structure realizes the installation of the test system through an upper box body 11, a lower box body 12 and a test box body 14, making it easy to perform pressure testing on pipe fittings and gauges. Through a modular installation method, the test system is easy to transport and can be flexibly carried and used after installation.

[0089] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A multi-purpose pressure testing system, characterized by: The invention comprises an oil storage tank (1), a hydraulic pump (2), a one-way valve (3), a throttle valve (4), an inlet stop valve (5) and a test pipeline (6) which are connected in sequence, wherein the test pipeline (6) is connected to the oil storage tank (1), and the oil storage tank (1) is used to store hydraulic oil; The test pipeline (6) comprises a test pipe pipeline (601) and a meter test pipeline (602), and the test pipe pipeline (601) and the meter test pipeline (602) are arranged in parallel between the inlet stop valve (5) and the oil storage tank (1); The test pipe pipeline (601) comprises a first pipeline (6011), a second pipeline (6012) and a test pipe outlet stop valve (6013) which are arranged in sequence. The first pipeline (6011) is connected to the inlet stop valve (5), the second pipeline (6012) is connected to the test pipe outlet stop valve (6013), and the test pipe outlet stop valve (6013) is connected to the oil storage tank (1). The outlet of the first pipeline (6011) and the inlet of the second pipeline (6012) are used to install the pipe to be tested. The meter measuring pipeline (602) comprises a third pipeline (6021) and a meter measuring outlet stop valve (6022) connected in sequence. The third pipeline (6021) is connected to the inlet stop valve (5). The third pipeline (6021) is connected to a meter measuring port (6023). The meter measuring port (6023) is used to install the meter to be measured. The meter measuring outlet stop valve (6022) is connected to the oil storage tank (1). A pressure sensor (7) is provided at the outlet of the inlet stop valve (5); When testing the meter, the outlet of the first pipeline (6011) is blocked; when testing the pipe, the meter inspection port (6023) is blocked.

2. The multi-purpose pressure testing system according to claim 1, characterized in that: The outlet of the inlet stop valve (5) is connected to a fine-tuning oil cylinder (501), the outlet of the inlet stop valve (5) is communicated with a rodless cavity of the fine-tuning oil cylinder (501), the movable end of the fine-tuning oil cylinder (501) is connected to a screw nut pair (502), and the nut of the screw nut pair (502) is fixedly connected to the movable end of the fine-tuning oil cylinder (501).

3. The multi-purpose pressure testing system according to claim 2, characterized in that: A two-position three-way solenoid valve (301) is provided between the one-way valve (3) and the throttle valve (4). The two-position three-way solenoid valve (301) is a one-inlet and one-outlet normally closed arrangement. Interface 1 of the two-position three-way solenoid valve (301) is connected to the throttle valve (4), interface 2 of the two-position three-way solenoid valve (301) is connected to the one-way valve (3), and interface 3 of the two-position three-way solenoid valve (301) is connected to the oil storage tank (1). When the coil of the two-position three-way solenoid valve (301) is energized, interface 2 of the two-position three-way solenoid valve (301) is connected to interface 1, and interface 3 of the two-position three-way solenoid valve (301) is closed. When the coil of the two-position three-way solenoid valve (301) is de-energized, interface 2 of the two-position three-way solenoid valve (301) is closed, and interface 1 of the two-position three-way solenoid valve (301) is connected to interface 3.

4. The multi-purpose pressure testing system according to claim 3, characterized in that: An overflow valve (201) is provided between the outlet of the hydraulic pump (2) and the oil storage tank (1).

5. The multi-purpose pressure testing system according to claim 3, characterized in that: A liquid level sensor (101) is provided in the oil storage tank (1), the liquid level sensor (101) is electrically connected to a controller (102), the controller (102) is electrically connected to an alarm (103), the liquid level sensor (101) is used to output a liquid level signal, and the controller (102) responds to the liquid level signal and is used to control the alarm (103) to issue an alarm.

6. A mounting structure for a multi-purpose pressure testing system, used for mounting a multi-purpose pressure testing system according to any one of claims 3 to 5, characterized in that: Including control box assembly and test box assembly; The control box assembly comprises an upper box (11), a lower box (12) and a display operation cover (13); the upper box (11) comprises an upper box shell (1101) and a bottom plate (1102); The bottom plate (1102) is arranged at the opening at the bottom end of the upper box shell (1101), the upper box shell (1101) is arranged at the top end of the lower box body (12), and the display operation cover (13) is arranged at the top end of the upper box shell (1101); The fine-tuning oil cylinder (501), the screw nut pair (502), the inlet stop valve (5), the pipe inspection outlet stop valve (6013), the meter inspection outlet stop valve (6022) and the pressure sensor (7) are all mounted on the bottom plate (1102); wherein the screw of the screw nut pair (502) is passed through the side wall of the upper box shell (1101), and the valve stems of the inlet stop valve (5), the pipe inspection outlet stop valve (6013) and the meter inspection outlet stop valve (6022) are all passed through the display operation cover (13); The oil storage tank (1), the hydraulic pump (2), the one-way valve (3), the throttle valve (4) and the two-position three-way solenoid valve (301) are all installed in the lower box body (12); The third pipeline (6021) and the meter inspection port (6023) are both installed in the upper box shell (1101), wherein the meter inspection port (6023) is provided on the top of the upper box shell (1101); The test box assembly includes a test box (14) and a test slot (15), wherein the test box (14) is installed on the same side of the upper box (11) and the lower box (12), and the test slot (15) is installed in the test box (14); The first pipeline (6011) is installed on the bottom plate (1102) and passes through the upper box shell (1101) and the test box (14). The second pipeline (6012) is installed in the test box (14). One end of the second pipeline (6012) passes through the test slot (15), and the other end passes through the test box (14) and the lower box (12).

7. The installation structure of a multi-purpose pressure testing system according to claim 6, characterized in that: A first door panel (1103) is provided on a side of the upper box housing (1101) away from the position where the lead screw nut pair (502) is inserted, and a pressure sensor (7) is provided close to the first door panel (1103). Opening the first door panel (1103) allows the outside to communicate with the interior of the upper box housing (1101).

8. The installation structure of a multi-purpose pressure testing system according to claim 6, characterized in that: The bottom of the test tank (15) is connected to a conical oil leakage tank (1501), and the bottom of the oil leakage tank (1501) is connected to an oil leakage pipe (1502). The oil leakage pipe (1502) is passed through the test box (14) and the lower box (12), and one end of the oil leakage pipe (1502) located in the lower box (12) is connected to the oil storage tank (1).

9. The installation structure of a multi-purpose pressure testing system according to claim 6, characterized in that: The top of the test box (14) is hinged with a protective cover (16), and the protective cover (16) is opened to allow the outside to communicate with the inside of the test box (14), and a gas pressure support rod (1601) is provided between the protective cover (16) and the test box (14).

10. The installation structure of a multi-purpose pressure testing system according to claim 9, characterized in that: The protective cover (16) is provided with a transparent protective window (17), through which the situation inside the test box (14) can be observed.

Images