Pressure valve airtightness detection device

Abstract

The utility model provides a pressure valve airtightness detection device, which relates to the technical field of valve detection and comprises a box body, a placing assembly, a clamping assembly and a valve body are arranged in the box body, the clamping assembly is fixed on the surface of the placing assembly, and the valve body can be fixed on the surface of the placing assembly through the clamping assembly; the box body comprises a detection bin, a purification bin and exhaust holes formed in the surface of the purification bin. According to the device, nitrogen is introduced into the valve body through the connecting pipe, once the problems of air leakage and the like occur in the valve body, the nitrogen can react with air to generate brownish red gas, so that a worker can visually observe the air tightness problem of the valve body, and meanwhile, a plurality of recorders arranged in the detection bin are matched; the valve body can be recorded without dead corners, so that leakage points of the valve are accurately positioned, and the filter plate can filter and purify gas generated by reaction to avoid pollution to air.

Description

Technical Field

[0001] The utility model relates to an air tightness detection device, in particular to an air tightness detection device for a pressure valve, belonging to the technical field of valve detection. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. Valves are control components in pipeline fluid conveying systems, used to change the cross-section of the passage and the flow direction of the medium, and have functions such as diversion, shutoff, throttling, check, diversion, or overflow pressure relief. From the simplest shut-off valve to the various valves used in extremely complex automatic control systems, there are many varieties and specifications. Valves for oilfield wellheads are one of them. When producing oilfield wellhead valves, the valves need to undergo strict air tightness testing to prevent leakage problems during use. The air tightness of the valve determines the quality of the valve, so factory testing is required to ensure the production quality of the valve.

[0003] The existing air tightness test is mainly based on water pressure. The valve that has been injected with compressed air is sunk into a container filled with water, and the air tightness of the valve is judged by observing whether bubbles appear in the water. This existing technology has the following defects: judging the air tightness of the valve by whether bubbles appear cannot intuitively observe the leakage point of the valve, and the air tightness detection effect is poor. At the same time, after the test is completed, the water in the valve needs to be blown and wiped clean by compressed air, which not only affects the test efficiency but also increases the labor cost. Utility Model Content

[0004] The utility model provides a pressure valve air tightness detection device to solve the problem in the prior art that the valve leakage point cannot be observed intuitively.

[0005] The utility model is implemented through the following technical solutions: a pressure valve air tightness detection device, comprising a box body, wherein a placement component, a clamping component and a valve body are arranged inside the box body, the clamping component is fixed to the surface of the placement component, and the valve body can be fixed to the surface of the placement component through the clamping component;

[0006] The box body includes a detection chamber, a purification chamber, and an exhaust hole opened on the surface of the purification chamber;

[0007] The placement assembly includes a placement table and a drive motor, a first threaded rod, a second threaded rod, a moving block and a connecting rod arranged inside the placement table, and the clamping assembly is fixed to the upper end of the connecting rod;

[0008] The clamping assembly includes a fixing frame, a telescopic rod and a fixing plate arranged on the side of the fixing frame, and the fixing plate can be tightly fitted with the valve body;

[0009] A filter plate is further provided inside the box, and the detection chamber and the purification chamber are separated by the filter plate.

[0010] Furthermore, a slider is fixed to the lower surface of the placement table, and a slide groove is opened on the surface of the inspection chamber. The slider can be slidably connected in the slide groove, and the placement table can be movably connected to the inspection chamber through the slider and the slide groove. There are two groups of sliders and slide grooves, and they are symmetrically arranged on the lower surface of the placement table. The slider and the slide groove are interference fit.

[0011] Furthermore, a transmission compartment is provided inside the placement table, the drive motor is fixed to the inner wall of the transmission compartment, one end of the first threaded rod is fixed to the output shaft of the drive motor, one end of the second threaded rod is fixed to the other end of the first threaded rod, and the other end of the second threaded rod is fixed to the inner wall of the transmission compartment through a bearing, and the thread directions of the surfaces of the first threaded rod and the second threaded rod are opposite.

[0012] Furthermore, the moving block is arranged on the surface of the first threaded rod, and a thread is provided in the inner hole of the moving block. The moving block can be movably connected to the first threaded rod through the thread. The connecting rod is fixed on the upper surface of the moving block, and a movable groove is provided on the surface of the transmission warehouse. The upper end of the connecting rod is passed through the movable groove. There are two moving blocks and two connecting rods, and they are symmetrically arranged on the surfaces of the first threaded rod and the second threaded rod.

[0013] Furthermore, the fixing frame is fixed to the upper end of the connecting rod, the telescopic rod is fixed to the inner wall of the fixing frame, the fixing plate is fixed to one end of the telescopic rod, a spring is sleeved on the surface of the telescopic rod, there are multiple telescopic rods, springs and fixing plates, and they are evenly arranged on the side of the fixing plate, there are two clamping assemblies, and they are symmetrically arranged on the upper ends of the two connecting rods.

[0014] Furthermore, a connecting pipe is connected to the side of the valve body through a flange, a through hole corresponding to the connecting pipe is opened on the surface of the detection chamber, and the connecting pipe is connected to an external air pump.

[0015] Furthermore, the surface of the box body is movably connected to a box door via a hinge, an observation window is provided on the surface of the box door, and a plurality of recorders are fixed to the inner wall of the detection chamber, and the positions of the recorders correspond to the valve body.

[0016] Furthermore, an exhaust fan can be fixed inside the purification chamber.

[0017] The utility model provides a pressure valve air tightness detection device, which has the following beneficial effects:

[0018] 1. The pressure valve air tightness detection device introduces nitrogen into the valve body through the connecting pipe. Once the valve body has problems such as air leakage, the nitrogen can react with the air to produce brown-red gas, so that the staff can intuitively observe the air tightness problem of the valve body. At the same time, with the multiple recorders installed in the detection chamber, the valve body can be recorded without blind spots, so as to accurately locate the leakage point of the valve, and the filter plate can filter and purify the gas generated by the reaction to avoid air pollution.

[0019] 2. The pressure valve air tightness detection device can not only keep the valve in a stable state by adjusting the assembly and the clamping assembly, so as not to affect the accuracy of the test results due to valve movement, but also prevent air leakage caused by valve loosening during air tightness detection. At the same time, multiple sets of telescopic rods and fixing plates can be adaptively adjusted for valves of different specifications, so that the clamping assembly can clamp and fix the valve body of the specified specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0022] Figure 3 This is a side sectional structural diagram of the present utility model;

[0023] Figure 4 It is a structural schematic diagram of the clamping assembly in the utility model.

[0024] Description of Reference Numerals

[0025] 1. Box body; 101. Inspection chamber; 102. Purification chamber; 103. Chute; 104. Exhaust hole;

[0026] 2. Placement assembly; 201. Placement table; 202. Slider; 203. Transmission compartment; 204. Drive motor; 205. First threaded rod; 206. Second threaded rod; 207. Moving block; 208. Connecting rod; 209. Movable slot;

[0027] 3. Clamping assembly; 301. Fixing frame; 302. Telescopic rod; 303. Fixing plate; 304. Spring;

[0028] 4. Valve body; 5. Connecting pipe; 6. Box door; 7. Filter plate; 8. Recorder. DETAILED DESCRIPTION

[0029] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4, an embodiment of the utility model provides a pressure valve air tightness detection device, including a box body 1, wherein a placement component 2, a clamping component 3 and a valve body 4 are arranged inside the box body 1, the clamping component 3 is fixed on the surface of the placement component 2, and the valve body 4 can be fixed on the surface of the placement component 2 through the clamping component 3; the box body 1 includes a detection chamber 101, a purification chamber 102 and an exhaust hole 104 opened on the surface of the purification chamber 102; the pressure valve air tightness detection device can not only keep the valve in a stable state through the adjustment component and the clamping component 3, and will not affect the accuracy of the detection result due to the movement of the valve, but also prevent the leakage problem caused by the looseness of the valve during the air tightness detection. At the same time, multiple sets of telescopic rods 302 and fixing plates 303 can be adaptively adjusted for valves of different specifications, so that the clamping component 3 can clamp and fix the valve body 4 of different specifications.

[0030] Please refer to Figure 2 and Figure 3 The placement component 2 includes a placement table 201 and a drive motor 204, a first threaded rod 205, a second threaded rod 206, a moving block 207 and a connecting rod 208 arranged inside the placement table 201, and the clamping component 3 is fixed to the upper end of the connecting rod 208; a transmission compartment 203 is opened inside the placement table 201, the drive motor 204 is fixed to the inner wall of the transmission compartment 203, one end of the first threaded rod 205 is fixed to the output shaft of the drive motor 204, one end of the second threaded rod 206 is fixed to the other end of the first threaded rod 205, and the other end of the second threaded rod 206 is fixed to the transmission compartment through a bearing. 203 inner wall, the thread directions of the first threaded rod 205 and the second threaded rod 206 are opposite; the moving block 207 is arranged on the surface of the first threaded rod 205, and the inner hole of the moving block 207 is provided with a thread. The moving block 207 can be movably connected with the first threaded rod 205 through the thread, and the connecting rod 208 is fixed on the upper surface of the moving block 207. A movable groove 209 is provided on the surface of the transmission chamber 203, and the upper end of the connecting rod 208 is passed through the movable groove 209. There are two moving blocks 207 and two connecting rods 208, and they are symmetrically arranged on the surfaces of the first threaded rod 205 and the second threaded rod 206.

[0031] Please refer to Figure 3 and Figure 4 The clamping assembly 3 includes a fixing frame 301 and a telescopic rod 302 and a fixing plate 303 arranged on the side of the fixing frame 301. The fixing plate 303 can fit tightly with the valve body 4; the fixing frame 301 is fixed to the upper end of the connecting rod 208, the telescopic rod 302 is fixed to the inner wall of the fixing frame 301, and the fixing plate 303 is fixed to one end of the telescopic rod 302. A spring 304 is sleeved on the surface of the telescopic rod 302. There are multiple telescopic rods 302, springs 304 and fixing plates 303, and they are evenly arranged on the side of the fixing plate 303. There are two clamping assemblies 3, and they are symmetrically arranged on the upper ends of the two connecting rods 208.

[0032] Please refer to Figure 1 and Figure 2 A slider 202 is fixed to the lower surface of the placement table 201, and a slide groove 103 is opened on the surface of the detection chamber 101. The slider 202 can be slidably connected in the slide groove 103. The placement table 201 can be movably connected to the detection chamber 101 through the slider 202 and the slide groove 103. There are two groups of sliders 202 and slide grooves 103, and they are symmetrically arranged on the lower surface of the placement table 201. The slider 202 and the slide groove 103 are interference fit.

[0033] Please refer to Figure 1 、 Figure 2 and Figure 3 , a filter plate 7 is also provided inside the box body 1, and the detection chamber 101 and the purification chamber 102 are separated by the filter plate 7; a connecting pipe 5 is connected to the side of the valve body 4 through a flange, and a through hole corresponding to the connecting pipe 5 is opened on the surface of the detection chamber 101, and the connecting pipe 5 is connected to the external air pump; a box door 6 is movably connected to the surface of the box body 1 by a hinge, and an observation window is opened on the surface of the box door 6. A plurality of recorders 8 are fixed on the inner wall of the detection chamber 101, and the position of the recorder 8 corresponds to the valve body 4; an exhaust fan can also be fixed inside the purification chamber 102; the pressure valve air tightness detection device introduces nitrogen into the valve body 4 through the connecting pipe 5. Once the valve body 4 has problems such as air leakage, the nitrogen can react with the air to produce a brown-red gas, so that the staff can intuitively observe the air tightness problem of the valve body 4, and at the same time, with the multiple recorders 8 set in the detection chamber 101, the valve body 4 can be recorded without blind spots, thereby accurately locating the leakage point of the valve, and the filter plate 7 can filter and purify the gas generated by the reaction to avoid air pollution.

[0034] When the present invention is in use: first, the device is placed in a suitable position, and then the device is electrically connected to an external power supply. Then the staff opens the box door 6, pulls the placement table 201 out of the detection chamber 101, places the valve body 4 on the placement table 201, and connects the connecting pipe 5 to the valve body 4 through a flange. Then the staff controls the driving motor 204 to operate through the control device, driving the first threaded rod 205 to rotate, and the first threaded rod 205 drives the second threaded rod 206 to rotate synchronously. The first threaded rod 205 and the second threaded rod 206 drive the moving block 207 and the connecting rod 208 fixed on the upper surface of the moving block 207 to move synchronously, and the two connecting rods 208 move toward each other, and the connecting rod 208 drives the fixing frame 301 to move. When the fixing plate 303 on the side of the fixing frame 301 is tightly fitted with the valve body 4, the staff can control the driving motor 204 to stop operating through the control device to complete the fixation of the valve body 4.

[0035] Then the staff uses an air pump to introduce nitrogen into the connecting pipe 5. Once the valve body 4 has problems such as air leakage, the nitrogen can react with the air to produce brown-red gas, allowing the staff to intuitively observe the air tightness problem of the valve body 4. At the same time, with the help of the multiple recorders 8 set in the detection chamber 101, the valve body 4 can be recorded without blind spots, so as to accurately locate the leakage point of the valve, and the filter plate 7 can filter and purify the gas generated by the reaction to avoid air pollution.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A pressure valve air tightness detection device, comprising a box (1), characterized in that: The box body (1) is provided with a placement component (2), a clamping component (3) and a valve body (4), wherein the clamping component (3) is fixed on the surface of the placement component (2), and the valve body (4) can be fixed on the surface of the placement component (2) through the clamping component (3); The box body (1) comprises a detection chamber (101), a purification chamber (102), and an exhaust hole (104) provided on the surface of the purification chamber (102); The placement component (2) comprises a placement table (201) and a driving motor (204), a first threaded rod (205), a second threaded rod (206), a moving block (207) and a connecting rod (208) arranged inside the placement table (201), and the clamping component (3) is fixed to the upper end of the connecting rod (208); The clamping assembly (3) comprises a fixing frame (301), and a telescopic rod (302) and a fixing plate (303) arranged on the side of the fixing frame (301), and the fixing plate (303) can be closely fitted with the valve body (4); A filter plate (7) is also provided inside the box body (1), and the detection chamber (101) and the purification chamber (102) are separated by the filter plate (7).

2. A pressure valve air tightness detection device according to claim 1, characterized in that: A slider (202) is fixed on the lower surface of the placement platform (201), and a slide groove (103) is opened on the surface of the detection chamber (101). The slider (202) can be slidably connected in the slide groove (103). The placement platform (201) can be movably connected in the detection chamber (101) through the slider (202) and the slide groove (103). There are two groups of sliders (202) and slide grooves (103), and they are symmetrically arranged on the lower surface of the placement platform (201). The sliders (202) and the slide grooves (103) are interference fit.

3. A pressure valve air tightness detection device according to claim 1, characterized in that: A transmission chamber (203) is provided inside the placement table (201), the drive motor (204) is fixed to the inner wall of the transmission chamber (203), one end of the first threaded rod (205) is fixed to the output shaft of the drive motor (204), one end of the second threaded rod (206) is fixed to the other end of the first threaded rod (205), and the other end of the second threaded rod (206) is fixed to the inner wall of the transmission chamber (203) via a bearing, and the thread directions of the surfaces of the first threaded rod (205) and the second threaded rod (206) are opposite.

4. A pressure valve air tightness detection device according to claim 3, characterized in that: The moving block (207) is arranged on the surface of the first threaded rod (205); a thread is provided in the inner hole of the moving block (207); the moving block (207) can be movably connected to the first threaded rod (205) through the thread; the connecting rod (208) is fixed on the upper surface of the moving block (207); a movable groove (209) is provided on the surface of the transmission bin (203); the upper end of the connecting rod (208) is inserted into the movable groove (209); there are two moving blocks (207) and two connecting rods (208), which are symmetrically arranged on the surfaces of the first threaded rod (205) and the second threaded rod (206).

5. The pressure valve air tightness detection device according to claim 1, characterized in that: The fixing frame (301) is fixed to the upper end of the connecting rod (208), the telescopic rod (302) is fixed to the inner wall of the fixing frame (301), the fixing plate (303) is fixed to one end of the telescopic rod (302), a spring (304) is sleeved on the surface of the telescopic rod (302), there are multiple telescopic rods (302), springs (304) and fixing plates (303), and they are evenly arranged on the side of the fixing plates (303), and there are two clamping components (3), which are symmetrically arranged on the upper ends of the two connecting rods (208).

6. A pressure valve air tightness detection device according to claim 1, characterized in that: The side of the valve body (4) is connected to a connecting pipe (5) via a flange, and a through hole corresponding to the connecting pipe (5) is opened on the surface of the detection chamber (101), and the connecting pipe (5) is connected to an external air pump.

7. A pressure valve air tightness detection device according to claim 1, characterized in that: The surface of the box body (1) is movably connected to a box door (6) via a hinge, and an observation window is provided on the surface of the box door (6). A plurality of recorders (8) are fixed to the inner wall of the detection chamber (101), and the positions of the recorders (8) correspond to the valve body (4).

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