Leakage-proof detection device for valve

Abstract

The utility model discloses a valve leakage-proof detection device, which comprises a bottom plate, a supporting block fixedly connected to the bottom surface of the bottom plate, a detection box fixedly connected to the top surface of the bottom plate, a nitrogen detector fixedly connected to the inner wall of the detection box, a sealing door opening assembly for placing a valve in a supporting mechanism, and a sealing door resetting assembly for resetting the sealing door assembly. The driving assembly is started to drive the sealing cover to move through the bidirectional threaded rod, the detection box and the threaded sleeve to make contact with a valve port, the valve is sealed by extruding the sealing gasket, the telescopic air inlet mechanism is started to suck nitrogen and inject the nitrogen into the valve, the nitrogen concentration in the detection box is detected through the nitrogen detector, and then whether leakage exists in the valve or not can be detected. According to the valve leak-proof detection device, the aim of quickly mounting and dismounting the valve during leak-proof detection of the valve is achieved, and the problems that the leak-proof detection speed of the valve is slow and the workload of workers is greatly increased due to the fact that most of existing detection devices are connected with the port of the valve through bolts are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve leakage prevention, in particular to a valve leakage prevention detection device. Background Art

[0002] Valves are control components in fluid delivery systems, performing functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion, or overflow and pressure relief. Valves used in fluid control systems come in a wide variety of types and specifications, from the simplest shutoff valves to the most complex valves used in automatic control systems.

[0003] After the valve is produced, it is necessary to use a detection device to test the sealing of the valve. Usually, the valve port is connected to the detection device with bolts, and then nitrogen gas for detection is injected into the valve through the detection device. The amount of nitrogen leakage in the detection device is used to determine whether the valve is leaking.

[0004] Due to the installation and connection characteristics of the valve, the valve is usually connected to the detection device by bolts and flanges. The bolt connection process is very cumbersome. Therefore, when the detection device needs to detect multiple valves, the valve disassembly and detection speed is very slow, which greatly increases the workload of the staff. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a valve leakage detection device for solving the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A valve leakage detection device comprises a base plate, the bottom surface of the base plate is fixedly connected to a support block, the top surface of the base plate is fixedly connected to a detection box, the inner wall of the detection box is fixedly connected to a nitrogen detector, the inner wall of the detection box is rotatably connected to a bidirectional threaded rod, the surface of the bidirectional threaded rod is threadedly connected to a threaded sleeve, the inner wall of the threaded sleeve is fixedly connected to a sealing cover, the inner wall of the sealing cover is fixedly connected to a sealing gasket, the top surface of the detection box is provided with a telescopic air intake mechanism, the back of the detection box is provided with a drive assembly, the inside of the detection box is provided with a support mechanism, and the top surface of the detection box is provided with a sealing door assembly.

[0008] Preferably, the telescopic air intake mechanism consists of a booster pump, a connecting pipe and a bellows, the booster pump is fixedly connected to the top surface of the detection box, the air inlet end of the connecting pipe is fixedly connected to the air outlet end of the booster pump, and the air outlet end of the connecting pipe is fixedly connected to the inner wall of the detection box, the air inlet end of the bellows is fixedly connected to the air outlet end of the connecting pipe, and the air outlet end of the bellows is fixedly connected to the inner wall of the sealing cover.

[0009] Preferably, the driving assembly consists of a servo motor, a driving wheel, a transmission belt and a driven wheel. The servo motor is fixedly connected to the back of the detection box, the driving wheel is fixedly connected to the output end of the servo motor, the transmission belt is engaged with the inner wall of the driving wheel, and the driven wheel is fixedly connected to the surface of the bidirectional threaded rod.

[0010] Preferably, the support mechanism consists of a support rod and a support plate, the support rod is fixedly connected to the inner wall of the detection box, and the support plate is fixedly connected to the inner wall of the support rod.

[0011] Preferably, the sealed door assembly consists of a hinge, a sealed door and a door lock, the hinge is fixedly connected to the top surface of the detection box, the sealed door is hingedly installed on the detection box through the hinge, and the sealed door overlaps the front of the detection box, and the door lock is fixedly connected to the inner wall of the sealed door.

[0012] Preferably, there are multiple bidirectional threaded rods, and all of the multiple bidirectional threaded rods are rotatably connected to the inner wall of the detection box.

[0013] Preferably, the sealing cover is circular in shape and is made of metal material.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the valve leakage detection device opens the sealing door assembly to place the valve in the supporting mechanism, resets the sealing door assembly, starts the driving assembly to drive the sealing cover to move and contact the valve port through the bidirectional threaded rod, the detection box and the threaded sleeve, seals the valve by squeezing the sealing gasket, starts the telescopic air intake mechanism to suck nitrogen into the valve, and detects the nitrogen concentration in the detection box through the nitrogen detector to detect whether the valve is leaking; the goal of facilitating the rapid installation and disassembly of the valve during the leakage detection of the valve is achieved, and the problem of slow valve leakage detection speed and greatly increased workload of the staff is avoided because most existing detection devices are connected to the valve port by bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the structural survey drawing of the utility model;

[0016] Figure 2 This is an enlarged view of the structure A of the utility model;

[0017] Figure 3 This is a front cross-sectional view of the structure of the utility model;

[0018] Figure 4 This is an enlarged view of the structure B of the utility model.

[0019] In the figure: 1. Base plate; 2. Support block; 3. Test box; 4. Nitrogen detector; 5. Bidirectional threaded rod; 6. Threaded sleeve; 7. Sealing cover; 8. Sealing gasket; 9. Booster pump; 10. Connecting pipe; 11. Bellows; 12. Servo motor; 13. Driving pulley; 14. Transmission belt; 15. Driven pulley; 16. Support rod; 17. Support plate; 18. Hinge; 19. Sealing door; 20. Door lock. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Reference Figure 1-4 When the pressure is too high, the pressure on the upper and lower parts of the valve body 2 is too low, and the pressure on the upper and lower parts of the valve body 2 is too low, which can effectively prevent the valve from leaking. The surface is fixedly connected, the air inlet end of the connecting pipe 10 is fixedly connected to the air outlet end of the boost pump 9, and the air outlet end of the connecting pipe 10 is fixedly connected to the inner wall of the detection box 3, the air inlet end of the bellows 11 is fixedly connected to the air outlet end of the connecting pipe 10, and the air outlet end of the bellows 11 is fixedly connected to the inner wall of the sealing cover 7, which is used to suck nitrogen and pressurize it into the valve, so as to facilitate the leakage detection of the valve through high-pressure nitrogen. A driving assembly is provided on the back of the detection box 3, and the driving assembly consists of a servo motor 12, a driving wheel 13, a transmission belt 14 and a driven wheel 15. The servo motor 12 is fixedly connected to the back of the detection box 3, the driving wheel 13 is fixedly connected to the output end of the servo motor 12, the transmission belt 14 is meshed with the inner wall of the driving wheel 13, and the driven wheel 15 is fixedly connected to the surface of the bidirectional threaded rod 5, for driving multiple bidirectional threaded rods 5 to rotate simultaneously, thereby improving the movement stability of the sealing cover 7. A supporting mechanism is provided inside the detection box 3, and a sealing door assembly is provided on the top surface of the detection box 3.

[0022] Specifically, the support mechanism consists of a support rod 16 and a support plate 17. The support rod 16 is fixedly connected to the inner wall of the detection box 3, and the support plate 17 is fixedly connected to the inner wall of the support rod 16, which is used to support and place the valve to facilitate the clamping and installation of the valve.

[0023] Specifically, the sealing door assembly consists of a hinge 18, a sealing door 19 and a door lock 20. The hinge 18 is fixedly connected to the top surface of the detection box 3. The sealing door 19 is hingedly installed on the detection box 3 through the hinge 18, and the sealing door 19 overlaps the front of the detection box 3. The door lock 20 is fixedly connected to the inner wall of the sealing door 19 and is used to open and seal the detection box 3, which facilitates the installation and disassembly of the valve and facilitates nitrogen detection.

[0024] The electrical components mentioned in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that performs control such as a computer.

[0025] During use: first open the door lock 20 and then rotate the sealing door 19 through the hinge 18 to open the valve, place the valve to be tested in the support plate 17, and face the valve connection port to the left and right sides. After resetting the sealing door 19, start the servo motor 12 to drive the driving wheel 13 and the transmission belt 14 to rotate. Through the engagement of the transmission belt 14 with the driven wheel 15, the bidirectional threaded rod 5 is driven to rotate along the inner wall of the detection box 3. Through the threaded connection between the bidirectional threaded rod 5 and the threaded sleeve 6, the sealing cover 7 is driven to move and contact the valve port. The movement of the sealing cover 7 cooperates with the valve port to squeeze the sealing gasket 8. The deformation of the sealing gasket 8 can seal the valve, and the bellows 11 is stretched by the movement of the sealing cover 7. The air inlet end of the booster pump 9 is connected to the nitrogen storage device. The booster pump 9 is started to suck nitrogen and inject it into the valve through the connecting pipe 10 and the bellows 11. The nitrogen concentration in the detection box 3 is detected by the nitrogen detector 4 to detect whether the valve is leaking.

[0026] To sum up, the valve leakage detection device opens the sealing door assembly to place the valve in the supporting mechanism, resets the sealing door assembly, starts the driving assembly to drive the sealing cover 7 to move and contact the valve port through the bidirectional threaded rod 5, the detection box 3 and the threaded sleeve 6, seals the valve by squeezing the sealing gasket 8, starts the telescopic air intake mechanism to suck nitrogen into the valve, and detects the nitrogen concentration in the detection box 3 through the nitrogen detector 4 to detect whether the valve is leaking, thereby achieving the goal of facilitating the rapid installation and disassembly of the valve during leakage detection, avoiding the problem that most existing detection devices are connected to the valve port by bolts, resulting in slow valve leakage detection speed and greatly increased workload for staff, and is used to solve the problems raised in the above background technology.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve leakage detection device, comprising a bottom plate (1), characterized in that: The bottom surface of the base plate (1) is fixedly connected to a support block (2), the top surface of the base plate (1) is fixedly connected to a detection box (3), the inner wall of the detection box (3) is fixedly connected to a nitrogen detector (4), the inner wall of the detection box (3) is rotatably connected to a bidirectional threaded rod (5), the surface of the bidirectional threaded rod (5) is threadedly connected to a threaded sleeve (6), the inner wall of the threaded sleeve (6) is fixedly connected to a sealing cover (7), the inner wall of the sealing cover (7) is fixedly connected to a sealing gasket (8), the top surface of the detection box (3) is provided with a telescopic air intake mechanism, the back surface of the detection box (3) is provided with a driving assembly, the interior of the detection box (3) is provided with a supporting mechanism, and the top surface of the detection box (3) is provided with a sealing door assembly.

2. A valve leakage detection device according to claim 1, characterized in that: The telescopic air intake mechanism is composed of a booster pump (9), a connecting pipe (10) and a bellows (11); the booster pump (9) is fixedly connected to the top surface of the detection box (3); the air inlet end of the connecting pipe (10) is fixedly connected to the air outlet end of the booster pump (9), and the air outlet end of the connecting pipe (10) is fixedly connected to the inner wall of the detection box (3); the air inlet end of the bellows (11) is fixedly connected to the air outlet end of the connecting pipe (10), and the air outlet end of the bellows (11) is fixedly connected to the inner wall of the sealing cover (7).

3. A valve leakage detection device according to claim 1, characterized in that: The driving assembly is composed of a servo motor (12), a driving wheel (13), a transmission belt (14) and a driven wheel (15); the servo motor (12) is fixedly connected to the back of the detection box (3); the driving wheel (13) is fixedly connected to the output end of the servo motor (12); the transmission belt (14) is meshed with the inner wall of the driving wheel (13); and the driven wheel (15) is fixedly connected to the surface of the bidirectional threaded rod (5).

4. A valve leakage detection device according to claim 1, characterized in that: The support mechanism consists of a support rod (16) and a support plate (17); the support rod (16) is fixedly connected to the inner wall of the detection box (3); and the support plate (17) is fixedly connected to the inner wall of the support rod (16).

5. A valve leakage detection device according to claim 1, characterized in that: The sealing door assembly consists of a hinge (18), a sealing door (19) and a door lock (20), wherein the hinge (18) is fixedly connected to the top surface of the detection box (3), the sealing door (19) is hingedly mounted on the detection box (3) through the hinge (18), and the sealing door (19) overlaps the front surface of the detection box (3), and the door lock (20) is fixedly connected to the inner wall of the sealing door (19).

6. A valve anti-leakage detection device according to claim 1, characterized in that: There are multiple bidirectional threaded rods (5), and all of the multiple bidirectional threaded rods (5) are rotatably connected to the inner wall of the detection box (3).

7. A valve anti-leakage detection device according to claim 1, characterized in that: The sealing cover (7) is circular in shape and is made of metal material.

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