Pipeline gas valve airtightness detection device

Abstract

The utility model relates to the field of gas valve detection, in particular to a pipeline gas valve airtightness detection device, which comprises a sealing detection box, a detection mechanism mounted at the upper end of the sealing detection box, and a mounting mechanism. Before operation of the device, a locking bolt is firstly unscrewed and a sealing door is opened, then a motor is started, and through rotary connection between a rotating shaft and a sealing detection box and fixed connection between the rotating shaft and a turnover door, after the motor is started, the turnover door can rotate with the rotating shaft as the center; after the turnover door rotates to 120-150 degrees, driving of the motor is stopped, in this way, the back face of the turnover door can directly leak out to facilitate installation of the gas valve body, the situation that a pipe structure is seriously squeezed and damaged can be avoided, and therefore the structure, used for installing the gas valve body, of the device can be directly seen; therefore, the situation that the gas valve body is easily ineffectively installed during installation is avoided.

Description

Technical Field

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

[0002] Gas valves are a new safety device for gas pipeline projects. They are used to cut off, connect, and regulate gas in pipelines, offering excellent control characteristics and sealing performance. They are suitable for use on pipelines carrying various fuel media, including city gas, liquefied petroleum gas, natural gas, and oxygen.

[0003] A search of the patent document with publication number CN219810578U reveals "a pipeline gas valve air tightness detection device. During operation, the device removes the seal from the access tube, then passes the gas valve body through the access tube and places it inside the inspection box. The gas supply pipe is then connected and installed to the gas valve body using a first connector, and the gas extraction pipe is connected and installed to the gas valve body using a second connector."

[0004] When the above-mentioned device is in operation, the gas valve to be tested needs to be placed inside the inspection box, and then a series of installation operations are performed on the gas valve only through the space for taking and placing the pipe. In this way, it is difficult for the operator to fully see the internal structure during installation, which takes a lot of time. It is also easy to cause the installation position of the gas valve to be not completely sealed or to become loose and offset after installation, thereby causing inaccurate test results. Utility Model Content

[0005] The purpose of the present utility model is to provide a pipeline gas valve air tightness detection device in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A pipeline gas valve air tightness detection device includes a sealing detection box, a detection mechanism is installed on the upper end of the sealing detection box, and also includes a mounting mechanism;

[0008] The mounting mechanism includes a rotating shaft, which is rotatably connected to the interior of the front end of the sealing detection box, a motor is installed at the input end of the rotating shaft, a flip door is fixed on the periphery of the rotating shaft, two electric push rods are installed at the rear end of the flip door, and the telescopic ends of the two electric push rods are arranged opposite to each other, and the telescopic ends of the two electric push rods are fixed with top plates, and a gas valve body is arranged between the two top plates, an air intake structure is installed at one end of the sealing detection box, and an air exhaust structure is installed at the other end of the sealing detection box, two fixed plates are fixed to the front side of one end of the sealing detection box, and a sealing door is rotatably connected between the two fixed plates, a locking bolt is provided at one end of the sealing door, and the locking bolt passes through the sealing door and is threadedly connected to the front end of the sealing detection box, and a sealing gasket is fixed to the edge of the flip door corresponding to the rear end of the sealing door.

[0009] Preferably, a sealing layer is provided on the outer wall of the flipping door, and a sealing layer is provided on the inner wall of the square hole of the sealing detection box corresponding to the flipping door.

[0010] Preferably, a layer of rubber material is wrapped around the outer walls of the two top plates at the telescopic ends of the two electric push rods.

[0011] Preferably, the air intake structure includes an air intake pump installed at one end of the sealing detection box. A gas inlet pipe is fixed to the output end of the air intake pump. A connector is installed at the output end of the gas inlet pipe, and the output end of the gas inlet pipe is connected to one end of the gas valve body through the connector. A first ring frame is fixed at the position corresponding to the pipe body of the gas inlet pipe at the rear end of the flipping door, and the gas inlet pipe passes through the two annular structures of the first ring frame.

[0012] Preferably, the air extraction structure includes an air extraction pump installed at the other end of the sealing detection box. An air extraction pipe is installed at the input end of the air extraction pump. A connector is installed at the intake end of the air extraction pipe, and the intake end of the air extraction pipe is connected to the other end of the gas valve body through the connector. A second ring frame is fixed at the position corresponding to the pipe body of the air extraction pipe at the rear end of the flipping door, and the air extraction pipe passes through the two annular structures of the second ring frame.

[0013] Preferably, the detection mechanism includes a mounting block fixed to the upper end of the sealing detection box. A pressure gauge is installed on the upper end of the mounting block. A vacuum machine is installed on one side of the pressure gauge, and the detection end of the pressure gauge and the intake end of the vacuum machine are both located inside the sealing detection box.

[0014] The beneficial effects compared with the prior art are as follows:

[0015] Before this device operates, first loosen the locking bolts and open the sealing door. Then start the motor. Due to the rotational connection between the rotating shaft and the sealing detection box and the fixed connection between the rotating shaft and the flipping door, when the motor is started, the flipping door can rotate around the rotating shaft. Stop the drive of the motor after the flipping door rotates to 120° - 150°. This can directly expose the back of the flipping door for the installation of the gas valve body, and can also avoid the situation that the pipe structure is severely squeezed and damaged. By doing so, the structure of the device for installing the gas valve body can be directly seen, thus avoiding the situation of ineffective installation of the gas valve body during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of an airtightness detection device for a pipeline gas valve described in the present utility model;

[0018] Figure 2 It is a schematic structural diagram of an installation mechanism of an airtightness detection device for a pipeline gas valve described in the present utility model;

[0019] Figure 3 It is a schematic structural diagram of a sealing door of an airtightness detection device for a pipeline gas valve described in the present utility model;

[0020] Figure 4 It is a schematic structural diagram of a detection mechanism of an airtightness detection device for a pipeline gas valve described in the present utility model.

[0021] The description of the reference numerals is as follows:

[0022] 1. Sealing detection box; 11. Underframe; 12. Fixed bolt; 2. Rotating shaft; 21. Motor; 22. Flipping door; 23. Electric push rod; 24. Gas valve body; 25. Intake pump; 26. Intake pipe; 27. First ring frame; 28. Exhaust pump; 29. Exhaust pipe; 210. Second ring frame; 211. Connector; 212. Fixed plate; 213. Sealing door; 214. Locking bolt; 215. Sealing gasket; 3. Installation block; 31. Pressure gauge; 32. Vacuum machine. Specific embodiments

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] The present utility model will be further described below with reference to the accompanying drawings:

[0026] As Figures 1-4 shown, a pipeline gas valve airtightness detection device includes a sealing detection box 1, a detection mechanism is installed on the upper end of the sealing detection box 1, and an installation mechanism is also included.

[0027] Two chassis 11 are fixed at the lower end of the sealing detection box 1, and a plurality of fixing bolts 12 are provided in the middle of the chassis 11; the device can be fixed to a suitable position through the fixing bolts 12.

[0028] The installation mechanism includes a rotating shaft 2, which is rotatably connected to the inside of the front end of the sealing detection box 1. A motor 21 is installed at the input end of the rotating shaft 2. A turning door 22 is fixed around the rotating shaft 2. Two electric push rods 23 are installed at the rear end of the turning door 22, and the telescopic ends of the two electric push rods 23 are arranged oppositely. The telescopic ends of the two electric push rods 23 are both fixed with top plates. A gas valve body 24 is arranged between the two top plates. An air intake structure is installed at one end of the sealing detection box 1. The air intake structure includes an air intake pump 25, which is installed at one end of the sealing detection box 1. The output end of the air intake pump 25 is fixed with an air intake pipe 26. The output end of the air intake pipe 26 is installed with a joint 211, and the output end of the air intake pipe 26 is connected to one end of the gas valve body 24 through the joint 211. A first ring frame 27 is fixed at the position corresponding to the pipe body of the air intake pipe 26 at the rear end of the turning door 22, and the air intake pipe 26 passes through the two annular structures of the first ring frame 27. An air extraction structure is installed at the other end of the sealing detection box 1. The air extraction structure includes an air extraction pump 28, which is installed at the other end of the sealing detection box 1. The input end of the air extraction pump 28 is installed with an air extraction pipe 29. The air intake end of the air extraction pipe 29 is installed with a joint 211, and the air intake end of the air extraction pipe 29 is connected to the other end of the gas valve body 24 through the joint 211. A second ring frame 210 is fixed at the position corresponding to the pipe body of the air extraction pipe 29 at the rear end of the turning door 22, and the air extraction pipe 29 passes through the two annular structures of the second ring frame 210. Two fixing plates 212 are fixed on the front side of one end of the sealing detection box 1. A sealing door 213 is rotatably connected between the two fixing plates 212. A locking bolt 214 is arranged at one end of the sealing door 213, and the locking bolt 214 passes through the sealing door 213 and is threadedly connected to the front end of the sealing detection box 1. A sealing gasket 215 is fixed at the rear end of the sealing door 213 corresponding to the edge of the turning door 22; Loosen the locking bolt 214 and open the sealing door 213, and then start the motor 21. Due to the rotational connection between the rotating shaft 2 and the sealing detection box 1 and the fixed connection between the rotating shaft 2 and the turning door 22, when the motor 21 is started, the turning door 22 can rotate around the rotating shaft 2. Stop the drive of the motor 21 after the turning door 22 rotates to 120°-150°. This can directly expose the back of the turning door 22 to facilitate the installation of the gas valve body 24, and can also avoid the situation that the pipe structure is severely squeezed and damaged. By doing so, the structure for installing the gas valve body 24 of the device can be directly seen, thus avoiding the situation of ineffective installation of the gas valve body 24 during installation.

[0029] The detection mechanism includes a mounting block 3, which is fixed on the upper end of the sealing detection box 1. A pressure gauge 31 is installed on the upper end of the mounting block 3. A vacuum machine 32 is installed on one side of the pressure gauge 31, and the detection end of the pressure gauge 31 and the air intake end of the vacuum machine 32 are both located inside the sealing detection box 1; The air pressure situation inside the sealing detection box 1 can be detected through the pressure gauge 31, and the air inside the sealing detection box 1 can be pumped out by starting the vacuum machine 32.

[0030] Working principle: Before the operation of this device, first loosen the locking bolt 214 and open the sealing door 213. Then start the motor 21. Due to the rotational connection between the rotating shaft 2 and the sealing detection box 1 and the fixed connection between the rotating shaft 2 and the flipping door 22, when the motor 21 is started, the flipping door 22 can rotate around the rotating shaft 2. After the flipping door 22 rotates to 120° - 150°, stop the drive of the motor 21. This can directly expose the back of the flipping door 22 for the installation of the gas valve body 24, and can also avoid the situation that the pipe structure is severely squeezed and damaged. By doing so, the structure of the device for installing the gas valve body 24 can be directly seen, thus avoiding the situation of ineffective installation of the gas valve body 24 during installation. After installing the gas valve body 24 through the two electric push rods 23 and the joint 211, the motor 21 drives in the reverse direction, so that the flipping door 22 rotates in the reverse direction until it resets and then the motor 21 stops driving. Then reset the sealing door 213 and the locking bolt 214 so that the sealing gasket 215 completely blocks the gap between the flipping door 22 and the sealing detection box 1, making the sealing detection box 1 sealed again for subsequent detection and processing. During the detection of the device, starting the air inlet pump 25 can conduct air inlet detection on the closed interior of the gas valve body 24, and at the same time, starting the air extraction pump 28 can conduct air extraction detection on the closed gas valve body 24. During the detection, it can be determined whether there is air leakage in the gas valve body 24 by observing the numerical fluctuation of the pressure gauge 31.

[0031] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the description in the specification only illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A pipeline gas valve air tightness detection device, comprising a sealing detection box (1), wherein a detection mechanism is installed at the upper end of the sealing detection box (1), characterized in that: Also included is a mounting mechanism; The mounting mechanism comprises a rotating shaft (2), the rotating shaft (2) being rotatably connected to the interior of the front end of the sealing detection box (1), a motor (21) being mounted on the input end of the rotating shaft (2), a flip door (22) being fixed on the periphery of the rotating shaft (2), two electric push rods (23) being mounted on the rear end of the flip door (22), and the telescopic ends of the two electric push rods (23) being arranged opposite to each other, the telescopic ends of the two electric push rods (23) being fixed with a top plate, a gas valve body (24) being arranged between the two top plates, and an air intake structure being mounted on one end of the sealing detection box (1). The other end of the sealing detection box (1) is equipped with an exhaust structure. Two fixed plates (212) are fixed to the front side of one end of the sealing detection box (1). A sealing door (213) is rotatably connected between the two fixed plates (212). A locking bolt (214) is provided at one end of the sealing door (213). The locking bolt (214) passes through the sealing door (213) and is threadedly connected to the front end of the sealing detection box (1). A sealing gasket (215) is fixed to the rear end of the sealing door (213) corresponding to the edge of the flip door (22).

2. The pipeline gas valve air tightness detection device according to claim 1, characterized in that: The outer wall of the flip door (22) is provided with a sealing layer, and the inner wall of the square hole of the sealing detection box (1) corresponding to the flip door (22) is provided with a sealing layer.

3. The pipeline gas valve air tightness detection device according to claim 1, characterized in that: The outer walls of the two top plates at the telescopic ends of the two electric push rods (23) are both wrapped with a layer of rubber material.

4. The pipeline gas valve air tightness detection device according to claim 1, characterized in that: The air intake structure comprises an air intake pump (25), the air intake pump (25) being installed at one end of the sealing detection box (1), an air intake pipe (26) being fixed at the output end of the air intake pump (25), a joint (211) being installed at the output end of the air intake pipe (26), and the output end of the air intake pipe (26) being connected to one end of the gas valve body (24) via the joint (211), a first ring frame (27) being fixed at a position corresponding to the body of the air intake pipe (26) at the rear end of the flip door (22), and the air intake pipe (26) passing through two annular structures of the first ring frame (27).

5. The pipeline gas valve air tightness detection device according to claim 1, characterized in that: The air extraction structure comprises an air extraction pump (28), the air extraction pump (28) being installed at the other end of the sealing detection box (1), an air extraction pipe (29) being installed at the input end of the air extraction pump (28), a joint (211) being installed at the air inlet end of the air extraction pipe (29), and the air inlet end of the air extraction pipe (29) being connected to the other end of the gas valve body (24) through the joint (211), a second ring frame (210) being fixed at the rear end of the flip door (22) at a position corresponding to the pipe body of the air extraction pipe (29), and the air extraction pipe (29) passing through two annular structures of the second ring frame (210).

6. The pipeline gas valve air tightness detection device according to claim 1, characterized in that: The detection mechanism comprises a mounting block (3), the mounting block (3) being fixed to the upper end of the sealing detection box (1), a pressure gauge (31) being mounted on the upper end of the mounting block (3), a vacuum machine (32) being mounted on one side of the pressure gauge (31), and a detection end of the pressure gauge (31) and an air inlet end of the vacuum machine (32) being both located inside the sealing detection box (1).

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