Airtightness technological process testing device

Abstract

The invention relates to the technical field of air tightness testing devices, and particularly discloses an air tightness technological process testing device which comprises a base, a limiting assembly and a testing assembly, the testing assembly is located above the base, the base is arranged in a door shape, and notches are formed in the two sides of the base; the limiting assembly comprises a first hydraulic cylinder, a transmission block, a connecting rod, a limiting strip, a displacement frame, a fixing block, a spring and a positioning block, the first hydraulic cylinder is located below the base and is a bidirectional hydraulic cylinder, the transmission block is fixedly connected to the first hydraulic cylinder, and the connecting rod is fixedly connected between the transmission block and the displacement frame. The valve can be limited and fixed, the position of the valve does not need to be manually adjusted, the testing efficiency is improved, the air tightness of the valve at different temperatures can be tested through the device, and the performance of the valve can be evaluated more accurately and comprehensively.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness testing devices, and in particular to an air tightness process flow testing device. Background Art

[0002] The valve air tightness test device is a device used to test whether the valve has leakage. It tests the sealing performance of the valve under working pressure by applying air pressure or other gas to the valve to ensure that the valve can work normally in actual application and avoid leakage from damaging the system. Air tightness testing is a very important step in the process of valve manufacturing, installation and maintenance, and is widely used in petroleum, chemical, electric power, water treatment and other fields.

[0003] At present, the existing technology still has the following areas for improvement: different types of valves have different structures. When testing the air tightness of different valves, it is necessary to manually adjust the valve to the most suitable position, which is time-consuming and labor-intensive, and the test efficiency is low. Temperature will affect the air tightness of the valve. The existing valve air tightness test device can usually only test the air tightness of the valve at room temperature, and cannot test the air tightness of the valve at different temperatures. The test results are very limited and cannot fully evaluate the valve performance. Summary of the invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention provides an airtight process flow testing device, which can limit and fix the valve without manual adjustment of the valve position, thereby improving the testing efficiency. The device can test the airtightness of the valve at different temperatures, thereby facilitating a more accurate and comprehensive evaluation of valve performance.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An airtight process flow testing device comprises a base, a limit assembly and a testing assembly, wherein the testing assembly is located above the base, the base is arranged in a door shape, and notches are arranged on both sides of the base;

[0007] The limiting assembly includes a first hydraulic cylinder, a transmission block, a connecting rod, a limiting bar, a displacement frame, a fixed block, a spring and a positioning block. The first hydraulic cylinder is located below the base. The first hydraulic cylinder is a bidirectional hydraulic cylinder. The transmission block is fixedly connected to the first hydraulic cylinder. The connecting rod is fixedly connected between the transmission block and the displacement frame. The limiting bars are provided in multiple groups. The multiple groups of limiting bars are respectively provided on both sides of the displacement frame. The displacement frame is slidably connected to the limiting bars.

[0008] The test assembly includes a bracket, a test fixture, an intake pipe, a support frame, an auxiliary rod, a second hydraulic cylinder, a connecting frame, a pressure sensor and a test bench. The bracket is fixedly connected to the top of the base, and the test bench is fixedly connected to the middle of the base. The upper end surface of the bracket is provided with a plurality of through holes. The second hydraulic cylinder passes through the through holes of the bracket and is fixedly connected to the bracket and the connecting frame. Two groups of auxiliary rods are provided. The two groups of auxiliary rods are arranged on both sides of the connecting frame. The two groups of auxiliary rods pass through the through holes of the bracket and are fixedly connected to the support frame.

[0009] Preferably, the fixing blocks are provided in multiple groups, the multiple groups of fixing blocks are respectively fixedly connected to both sides of the displacement frame, the side end surfaces of the fixing blocks and the side end surfaces of the displacement frame are on the same horizontal plane, and the spring is fixedly connected between the fixing blocks and the positioning blocks.

[0010] Preferably, the positioning block is provided with a protruding section, the displacement frame is provided with a groove, the groove of the displacement frame matches the protruding section of the positioning block, the protruding section of the positioning block is arranged at the groove of the displacement frame, and the positioning block is slidably connected to the displacement frame via the protruding section of the positioning block.

[0011] Preferably, the connecting frame is U-shaped, protruding blocks are provided on both sides of the connecting frame, the connecting frame is slidably connected to the supporting frame, and the protruding blocks of the connecting frame are located on the inner side of the supporting frame.

[0012] Preferably, the height of the protruding block of the connecting frame is smaller than the height of the inner space of the supporting frame.

[0013] Preferably, the pressure sensor is provided between the connecting frame and the supporting frame, and the pressure sensor is fixedly connected to the supporting frame.

[0014] Preferably, the support frame is fixedly connected to the top of the test fixture, the air inlet pipe is connected to the test fixture, and the test fixture is provided with a ventilation pipe, a heating pipe, a guide plate, a transition plate and an air outlet. The ventilation pipe is radially arranged, and a plurality of ventilation heads are provided on the ventilation pipe.

[0015] Preferably, the transition plate is arranged below the vent head, and a plurality of through holes are formed on the transition plate, and positions of the through holes of the plurality of transition plates correspond one-to-one to positions of the plurality of vent heads.

[0016] Preferably, a plurality of the heating tubes are arranged below the transition plate, and the positions of the plurality of the heating tubes correspond one-to-one to the positions of the plurality of the ventilation heads. A heating wire is arranged inside the heating tubes. The guide plate is arranged below the heating tubes, and the guide plate is arranged in a funnel shape. The air outlet is arranged at the outlet of the guide plate funnel.

[0017] Preferably, the transmission block is arranged at the notch of the base.

[0018] The beneficial effects of the present invention are:

[0019] (1) By setting the base and the limit assembly, the technical effect that can be achieved is that the base is set in a door shape, with notches on both sides of the base, the first hydraulic cylinder is located below the base, and the space utilization rate is high. The transmission block is set at the notch of the base, which is convenient for the first hydraulic cylinder to drive the transmission block to move inward or outward on both sides. The positioning block can be displaced by cooperating with the displacement frame, the fixing block, the spring and the positioning block, which is convenient for the device to adapt to valves of different shapes and specifications, thereby improving the versatility of the device. By setting the limit assembly, the valve can be limited and fixed, without the need to manually adjust the valve position, thereby improving the test efficiency.

[0020] (2) By setting up the test assembly, the technical effect that can be achieved is that the protruding block of the connecting frame is located on the inner side of the supporting frame, the height of the protruding block of the connecting frame is smaller than the height of the inner space of the supporting frame, a pressure sensor is arranged between the connecting frame and the supporting frame, and the pressure sensor is fixedly connected to the supporting frame. When performing an air tightness test, the connecting frame can slide downward after being subjected to the pressure applied by the second hydraulic cylinder to apply a preset pressure to the pressure sensor, and the pressure sensor transmits data to the control system, which is convenient for real-time monitoring of data during the test process and ensures the accuracy of the test results.

[0021] (3) By setting up the test assembly, a technical effect that can be achieved is that the vent pipe is arranged in a radial shape, so that the gas introduced can flow downward more evenly, so that the gas can be evenly heated when it is subsequently heated, and the gas temperature can be quickly changed, thereby improving the temperature change efficiency. A plurality of heating pipes are arranged below the transition plate, and the positions of the plurality of heating pipes correspond to the positions of the plurality of vent heads. An electric heating wire is arranged inside the heating pipe, so that the gas can be heated and the temperature can be changed, so that the device can test the air tightness of the valve under different temperature conditions, so as to more accurately and comprehensively evaluate the valve performance. The guide plate is arranged in a funnel shape, so as to facilitate the drainage of the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 is a first stereogram of the present invention;

[0024] Figure 2 It is a right side view of the present invention;

[0025] Figure 3 is a second stereogram of the present invention;

[0026] Figure 4A top view of the present invention;

[0027] Figure 5 is a first cross-sectional view of a portion of a test assembly in the present invention;

[0028] Figure 6 is a second cross-sectional view of a portion of the test assembly of the present invention;

[0029] Figure 7 The internal structure diagram of the test tool in the present invention;

[0030] Figure 8 It is a structural diagram of the limit assembly and the test bench in the present invention;

[0031] Fig. 9 is a structural diagram of the connecting frame in the present invention;

[0032] Description of main component symbols:

[0033] In the figure: 1. base; 1101. ventilation pipe; 1102. ventilation head; 1103. heating pipe; 1104. heating wire; 1105. guide plate; 1106. transition plate; 1107. air outlet; 2. first hydraulic cylinder; 3. transmission block; 4. connecting rod; 5. limit strip; 6. displacement frame; 7. fixing block; 8. spring; 9. positioning block; 10. bracket; 11. test fixture; 12. air inlet pipe; 13. support frame; 14. auxiliary rod; 15. second hydraulic cylinder; 16. connecting frame; 17. pressure sensor; 18. test bench. DETAILED DESCRIPTION

[0034] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside" or "outside" is based on the orientation or position described in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0036] Reference Figures 1 to 9The present invention discloses an airtight process flow testing device, comprising a base 1, a limit assembly and a testing assembly, wherein the testing assembly is located above the base 1, the base 1 is door-shaped, and notches are arranged on both sides of the base 1;

[0037] The limiting assembly includes a first hydraulic cylinder 2, a transmission block 3, a connecting rod 4, a limiting bar 5, a displacement frame 6, a fixing block 7, a spring 8 and a positioning block 9. The first hydraulic cylinder 2 is located below the base 1, and has a high space utilization rate. The first hydraulic cylinder 2 is a bidirectional hydraulic cylinder. The transmission block 3 is fixedly connected to the first hydraulic cylinder 2, and the connecting rod 4 is fixedly connected between the transmission block 3 and the displacement frame 6. There are multiple groups of limiting bars 5, and the multiple groups of limiting bars 5 are respectively arranged on both sides of the displacement frame 6. The displacement frame 6 is slidably connected to the limiting bars 5, which is convenient for limiting the moving direction of the displacement frame 6 and for subsequent limiting and fixing of the valve; the transmission block 3 is arranged at the notch of the base 1, so that the first hydraulic cylinder 2 can drive the transmission block 3 to move inward or outward on both sides;

[0038] The test assembly includes a bracket 10, a test tool 11, an intake pipe 12, a support frame 13, an auxiliary rod 14, a second hydraulic cylinder 15, a connecting frame 16, a pressure sensor 17 and a test bench 18. The bracket 10 is fixedly connected to the top of the base 1, and the test bench 18 is fixedly connected to the middle of the base 1. The upper end surface of the bracket 10 is provided with a plurality of through holes. The second hydraulic cylinder 15 passes through the through holes of the bracket 10 and is fixedly connected to the bracket 10 and the connecting frame 16. Two groups of auxiliary rods 14 are provided, and the two groups of auxiliary rods 14 are arranged on both sides of the connecting frame 16. The two groups of auxiliary rods 14 pass through the through holes of the bracket 10 and are fixedly connected to the support frame 13.

[0039] Reference Figures 1 to 4 as well as Figure 8 There are multiple groups of fixed blocks 7, which are respectively fixedly connected to both sides of the displacement frame 6, the side end surfaces of the fixed blocks 7 and the side end surfaces of the displacement frame 6 are on the same horizontal plane, and the spring 8 is fixedly connected between the fixed blocks 7 and the positioning blocks 9.

[0040] Reference Figures 1 to 4 as well as Figure 8 The positioning block 9 is provided with a protruding section, and the displacement frame 6 is provided with a groove. The groove of the displacement frame 6 matches the protruding section of the positioning block 9. The protruding section of the positioning block 9 is arranged at the groove of the displacement frame 6. The positioning block 9 is slidably connected to the displacement frame 6 through the protruding section of the positioning block 9. The displacement frame 6, the fixing block 7, the spring 8 and the positioning block 9 cooperate to enable the positioning block 9 to be displaced, which is convenient for the device to adapt to valves of different shapes and specifications, thereby improving the versatility of the device.

[0041] By setting the limit assembly, the valve can be limited and fixed without manual adjustment of the valve position, thus improving the test efficiency.

[0042] Reference Figures 1 to 3 as well as Figure 5 , Figure 6 and Fig. 9 The connecting frame 16 is U-shaped, and protruding blocks are arranged on both sides of the connecting frame 16. The connecting frame 16 is slidably connected to the supporting frame 13, and the protruding blocks of the connecting frame 16 are located on the inner side of the supporting frame 13; the height of the protruding blocks of the connecting frame 16 is less than the height of the inner space of the supporting frame 13; a pressure sensor 17 is arranged between the connecting frame 16 and the supporting frame 13, and the pressure sensor 17 is fixedly connected to the supporting frame 13. When performing an air tightness test, the connecting frame 16 can slide downward after being subjected to the pressure applied by the second hydraulic cylinder 15 to apply a preset pressure to the pressure sensor 17, and the pressure sensor 17 transmits data to the control system, which is convenient for real-time monitoring of data during the test and ensuring the accuracy of the test results.

[0043] Reference Figures 1 to 3 and Figures 5 to 7 The support frame 13 is fixedly connected to the top of the test fixture 11, the air inlet pipe 12 is connected to the test fixture 11, and the test fixture 11 is provided with a ventilation pipe 1101, a heating pipe 1103, a guide plate 1105, a transition plate 1106 and an air outlet 1107. The ventilation pipe 1101 is radially arranged to facilitate the more uniform downward flow of the gas introduced, so that the gas can be evenly heated during the subsequent heating, the gas temperature can be quickly changed, and the temperature change efficiency is improved. A plurality of ventilation heads 1102 are arranged on the ventilation pipe 1101.

[0044] Reference Figures 5 to 7 A transition plate 1106 is arranged below the vent head 1102, and a plurality of through holes are provided on the transition plate 1106, and the positions of the through holes of the plurality of transition plates 1106 correspond one-to-one to the positions of the plurality of vent heads 1102; a plurality of heating tubes 1103 are arranged below the transition plate 1106, and the positions of the plurality of heating tubes 1103 correspond one-to-one to the positions of the plurality of vent heads 1102, and an electric heating wire 1104 is arranged inside the heating tube 1103, which is convenient for heating and changing the temperature of the gas, so that the device can test the air tightness of the valve under different temperature conditions, and is convenient for more accurate and comprehensive evaluation of the valve performance, and a guide plate 1105 is arranged below the heating tube 1103, and the guide plate 1105 is arranged in a funnel shape, which is convenient for guiding the gas, and an outlet 1107 is arranged at the outlet of the funnel of the guide plate 1105.

[0045] The working principle and use process of the present invention are as follows: the valve is placed on the test bench 18, and the first hydraulic cylinder 2 is started to move inward from both sides. The first hydraulic cylinder 2 drives the transmission block 3 and the displacement frame 6 to move. The displacement frame 6 drives the fixed block 7, the spring 8 and the positioning block 9 to move until the positioning block 9 is against the valve, and the position of the valve is fine-tuned and positioned to assist in fixing the valve to prevent the valve from shaking during testing and affecting the test data.

[0046] Start the second hydraulic cylinder 15 to move downward, drive the connecting frame 16 to move downward, the connecting frame 16 slides downward, drive the support frame 13 to move downward, when the connecting frame 16 slides downward, a preset pressure is applied to the pressure sensor 17, the pressure sensor 17 transmits the data to the control system, it is convenient to monitor the data in the test process in real time, to ensure the accuracy of the test results, the support frame 13 drives the test fixture 11 to move downward until it contacts the valve, the gas is passed from the air inlet pipe 12 into the test fixture 11, the gas is passed from the air inlet pipe 12 into the ventilation pipe 1101, and the ventilation head 1102 arranged on the ventilation pipe 1101 flows downward through the transition plate 1106, the heating pipe 1103 and the guide plate 1105 to the outlet 1107, the air tightness test of the valve is performed.

[0047] When it is necessary to test the air tightness of the valve at different temperatures: place the valve on the test bench 18, start the first hydraulic cylinder 2 to move inward from both sides, the first hydraulic cylinder 2 drives the transmission block 3 and the displacement frame 6 to move, the displacement frame 6 drives the fixed block 7, the spring 8 and the positioning block 9 to move until the positioning block 9 is against the valve, fine-tune the position of the valve and assist in fixing the valve to prevent the valve from shaking during the test and affecting the test data.

[0048] Start the second hydraulic cylinder 15 to move downward, driving the connecting frame 16 to move downward. The connecting frame 16 slides downward to drive the support frame 13 to move downward. When the connecting frame 16 slides downward, a preset pressure is applied to the pressure sensor 17. The pressure sensor 17 transmits data to the control system to facilitate real-time monitoring of data during the test process to ensure the accuracy of the test results. The support frame 13 drives the test tooling 11 to move downward until it contacts the valve.

[0049] Start the heating wire 1104 and heat it to the preset temperature, and pass the gas into the test fixture 11 from the air inlet pipe 12. The gas passes into the ventilation pipe 1101 from the air inlet pipe 12, and flows downward from the ventilation head 1102 set on the ventilation pipe 1101 through the transition plate 1106 and the heating pipe 1103. The gas is heated in the heating pipe 1103 and then flows downward, and flows to the outlet 1107 through the guide plate 1105 to test the air tightness of the valve.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An airtight process flow testing device, characterized in that: It comprises a base (1), a limit assembly and a test assembly, wherein the test assembly is located above the base (1), the base (1) is arranged in a door shape, and notches are arranged on both sides of the base (1); The limiting assembly comprises a first hydraulic cylinder (2), a transmission block (3), a connecting rod (4), a limiting bar (5), a displacement frame (6), a fixing block (7), a spring (8) and a positioning block (9); the first hydraulic cylinder (2) is located below the base (1); the first hydraulic cylinder (2) is a bidirectional hydraulic cylinder; the transmission block (3) is fixedly connected to the first hydraulic cylinder (2); the connecting rod (4) is fixedly connected between the transmission block (3) and the displacement frame (6); a plurality of groups of limiting bars (5) are provided, and the plurality of groups of limiting bars (5) are respectively provided on both sides of the displacement frame (6); the displacement frame (6) is slidably connected to the limiting bars (5); The test assembly comprises a bracket (10), a test fixture (11), an air intake pipe (12), a support frame (13), an auxiliary rod (14), a second hydraulic cylinder (15), a connecting frame (16), a pressure sensor (17) and a test bench (18); the bracket (10) is fixedly connected to the top of the base (1); the test bench (18) is fixedly connected to the middle of the base (1); a plurality of through holes are arranged on the upper end surface of the bracket (10); the second hydraulic cylinder (15) passes through the through holes of the bracket (10) and is fixedly connected to the bracket (10) and the connecting frame (16); two groups of the auxiliary rods (14) are arranged, the two groups of the auxiliary rods (14) are arranged on both sides of the connecting frame (16); the two groups of the auxiliary rods (14) pass through the through holes of the bracket (10) and are fixedly connected to the support frame (13).

2. The airtight process flow testing device according to claim 1, characterized in that: The fixing blocks (7) are provided in a plurality of groups, and the plurality of groups of the fixing blocks (7) are respectively fixedly connected to both sides of the displacement frame (6), the side end surfaces of the fixing blocks (7) and the side end surfaces of the displacement frame (6) are located on the same horizontal plane, and the spring (8) is fixedly connected between the fixing blocks (7) and the positioning blocks (9).

3. The airtight process flow testing device according to claim 2, characterized in that: The positioning block (9) is provided with a protruding section, and the displacement frame (6) is provided with a groove. The groove of the displacement frame (6) matches the protruding section of the positioning block (9). The protruding section of the positioning block (9) is arranged at the groove of the displacement frame (6). The positioning block (9) is slidably connected to the displacement frame (6) via the protruding section of the positioning block (9).

4. The airtight process flow testing device according to claim 1, characterized in that: The connecting frame (16) is arranged in a U shape, and protruding blocks are arranged on both sides of the connecting frame (16). The connecting frame (16) is slidably connected to the supporting frame (13), and the protruding blocks of the connecting frame (16) are located on the inner side of the supporting frame (13).

5. The airtight process flow testing device according to claim 4, characterized in that: The height of the protruding block of the connecting frame (16) is smaller than the height of the inner space of the supporting frame (13).

6. The airtight process flow testing device according to claim 5, characterized in that: The pressure sensor (17) is arranged between the connecting frame (16) and the supporting frame (13), and the pressure sensor (17) is fixedly connected to the supporting frame (13).

7. The airtight process flow testing device according to claim 1, characterized in that: The support frame (13) is fixedly connected to the top of the test fixture (11); the air inlet pipe (12) is connected to the test fixture (11); a ventilation pipe (1101), a heating pipe (1103), a guide plate (1105), a transition plate (1106) and an air outlet (1107) are arranged inside the test fixture (11); the ventilation pipe (1101) is arranged in a radial shape; and a plurality of ventilation heads (1102) are arranged on the ventilation pipe (1101).

8. The airtight process flow testing device according to claim 7, characterized in that: The transition plate (1106) is arranged below the vent head (1102), and a plurality of through holes are provided on the transition plate (1106), and the positions of the through holes of the plurality of transition plates (1106) correspond one-to-one to the positions of the plurality of vent heads (1102).

9. The airtight process flow testing device according to claim 8, characterized in that: A plurality of heating tubes (1103) are arranged below the transition plate (1106), and the positions of the plurality of heating tubes (1103) correspond one-to-one to the positions of the plurality of ventilation heads (1102). A heating wire (1104) is arranged inside the heating tube (1103). The guide plate (1105) is arranged below the heating tube (1103), and the guide plate (1105) is arranged in a funnel shape. The air outlet (1107) is arranged at the outlet of the funnel of the guide plate (1105).

10. The airtight process flow testing device according to claim 1, characterized in that: The transmission block (3) is arranged at the notch of the base (1).

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