Valve body sealing detection device

Abstract

The utility model discloses a valve body sealing detection device, which relates to the technical field of valves and comprises a shell, the top of the shell is fixedly connected with an electric hydraulic rod, the bottom of the electric hydraulic rod is fixedly connected with an extrusion disc, and the shell is provided with a fixed chassis close to the right lower part of the extrusion disc. A valve is placed on the top of the chassis shell, the rotating disc is bounced through the operating rod to rotate, the bottoms of the extrusion columns move inwards along threads through limitation of sliding grooves in the chassis shell, and the four extrusion columns move inwards at the same time to extrude the periphery of a flange on the valve; the two ports of the valve correspond to the chassis shell and the extrusion disc correspondingly, the electric hydraulic rod is started to drive the extrusion disc to move downwards, the valve is firmly extruded to the top of the fixed chassis, and the two flange installation discs of the valve are extruded and sealed; the installation time of flange bolts is reduced, and the detection efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a valve body sealing detection device. Background Technology

[0002] In industrial production, valves are key components for controlling fluid transport, and their sealing performance directly affects the safety and stable operation of the system. Whether it is the transport of flammable and explosive media in the petrochemical industry or ensuring a stable supply of water resources in urban water supply systems, the sealing reliability of valves is crucial. Therefore, sealing testing of valve bodies has become a necessary procedure in the production process.

[0003] Existing valve sealing testing devices have numerous problems in practical applications. Regarding fixing methods, traditional devices generally rely on flange bolts to fasten the valve. This process is cumbersome, requiring workers to tighten each bolt individually, which not only consumes significant manpower and time but also makes it difficult to precisely control the torque of each bolt during tightening, resulting in uneven stress around the valve flange. During testing, inconsistent pressure distribution can lead to misjudgments of the valve's local sealing performance, severely affecting the accuracy and reliability of the test results.

[0004] In terms of pressure monitoring and safety protection, most traditional detection devices lack comprehensive pressure regulation and emergency pressure relief mechanisms. When the pressure rises abnormally during the detection process, the device cannot respond in time, which may lead to valve damage due to overpressure or even serious safety accidents such as internal high-pressure media ejection. Utility Model Content

[0005] This invention provides a valve body sealing detection device to solve the problems existing in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A valve body sealing detection device includes a housing, an electro-hydraulic rod fixedly connected to the top of the housing, a pressing plate fixedly connected to the bottom of the electro-hydraulic rod, a fixed base plate disposed directly below the pressing plate on the housing, a pressure relief mechanism disposed on the front side of the fixed base plate, a water pump pipe fixedly connected to the bottom of the fixed base plate, a booster pump fixedly connected to the rear side of the water pump pipe, and a water tank fixedly connected through the bottom end of the water pump pipe.

[0008] A further improvement of the present invention is that: a second water outlet is provided at the bottom of the extrusion plate, and a first water outlet is provided at the top of the outer wall of the extrusion plate, which is connected to the second water outlet.

[0009] A further improvement of the present invention is that: the fixed chassis includes a chassis shell, a cylindrical seat is fixedly connected to the bottom of the chassis shell, a pressure gauge is fixedly connected to the outer wall of the cylindrical seat, and the front side of the cylindrical seat is fixedly connected to the rear end of the pressure relief mechanism.

[0010] A further improvement of this utility model is that: a rotating disk is rotatably connected to the inner wall of the chassis shell, four extrusion columns are provided on the top of the rotating disk, four sliding grooves are provided on the top of the chassis shell, and the outer wall of the extrusion column is slidably connected to the inner wall of the sliding groove.

[0011] A further improvement of the present invention is that: a spiral groove is provided on the top of the rotating disk, and the spiral groove is slidably connected to the bottom end of the four extrusion columns; an operating rod is fixedly connected to one side of the rotating disk, and the operating rod extends to the outside of the chassis shell and is slidably connected to it.

[0012] A further improvement of the present invention is that the pressure relief mechanism includes a pneumatic rod, one end of which is fixedly connected to a fixed tube, the output shaft of which is fixedly connected to a movable shaft, one end of which is fixedly connected to a sealing plug, the outer wall of which is slidably connected to the inner wall of the fixed tube, a transparent tube being fixedly connected through the rear bottom of the fixed tube, and a drain pipe being fixedly connected to the bottom of the transparent tube.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] 1. This utility model provides a valve body sealing testing device. The valve is placed on top of the chassis shell, and the rotating disk is rotated by the operating lever. At this time, the valve rotates at the bottom of the extrusion column through the spiral groove. The bottom of the extrusion column moves inward along the thread and is restricted by the sliding groove on the chassis shell. Since the thread positions of the four extrusion columns on the spiral groove are different, but the lengths are different, the distances of the four extrusion columns from the center point of the rotating disk are the same. With the same moving speed, the four extrusion columns move inward simultaneously, extruding the flanges on the valve. This ensures that the mounting flanges on the valve are at the center position of the rotating disk, thus ensuring that the pressure around the valve flanges is the same during the test. After the two ports of the valve are aligned with the chassis shell and the extrusion disk respectively, and are now in the center position, the electric hydraulic rod is activated to drive the extrusion disk to move downward, firmly extruding the valve onto the top of the fixed chassis and extruding and sealing the two flange mounting plates of the valve. This reduces the installation time by flange bolts and improves the testing efficiency of the device.

[0015] 2. This utility model provides a valve body sealing detection device. Water from the tank is pumped into the valve through a hole between the base and the cylindrical seat via a water pump pipe. The valve under test is closed, and the pressure gauge reading increases. The pressurizing pump stops and maintains a stable pressure while monitoring the pressure gauge reading to detect the valve's seal. A pressure relief mechanism is provided on the front side of the cylindrical seat. When the internal pressure of the cylindrical seat increases, it squeezes the sealing plug to move into the pneumatic rod. Since the pneumatic rod also contains high-pressure gas that expands, the sealing plug is squeezed to move to the transparent tube only when the internal pressure of the cylindrical seat exceeds the pressure of the pneumatic rod. The high-pressure liquid is then discharged from the transparent tube, preventing the danger caused by excessive internal pressure during the test and improving the safety of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a three-dimensional cross-sectional view of the present invention;

[0018] Figure 3 This is a three-dimensional schematic diagram of the extrusion disc structure of this utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the structural fixing chassis of this utility model;

[0020] Figure 5 This is a three-dimensional schematic diagram of the rotating disk structure of this utility model;

[0021] Figure 6 This is a three-dimensional schematic diagram of the pressure relief mechanism of this utility model.

[0022] In the diagram: 1. Outer shell; 2. Electro-hydraulic rod; 3. Extrusion plate; 4. Fixed chassis; 5. Pressure pump; 6. Pressure relief mechanism; 51. Water pump pipe; 31. Outlet 1; 32. Outlet 2; 41. Chassis shell; 42. Cylindrical seat; 43. Pressure gauge; 45. Rotating disc; 46. Extrusion column; 47. Sliding groove; 451. Spiral groove; 452. Operating lever; 61. Pneumatic rod; 62. Moving shaft; 63. Sealing plug; 64. Transparent tube; 65. Fixed tube. Detailed Implementation

[0023] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments:

[0024] like Figure 1-3As shown, this utility model provides a valve body sealing detection device, comprising a housing 1, an electric hydraulic rod 2 fixedly connected to the top of the housing 1, a pressing plate 3 fixedly connected to the bottom of the electric hydraulic rod 2, a fixed base 4 located directly below the pressing plate 3 on the housing 1, a pressure relief mechanism 6 located on the front side of the fixed base 4, a water pump pipe 51 fixedly connected to the bottom of the fixed base 4, a pressure pump 5 fixedly connected to the rear side of the water pump pipe 51, a water tank fixedly connected to the bottom end of the water pump pipe 51, a second water outlet 32 ​​opened at the bottom of the pressing plate 3, and a first water outlet 31 connected to the second water outlet 32 ​​opened at the top of the outer wall of the pressing plate 3.

[0025] like Figure 4-5 As shown, this utility model provides a technical solution for a valve body sealing detection device: Preferably, the fixed chassis 4 includes a chassis shell 41, a cylindrical seat 42 is fixedly connected to the bottom of the chassis shell 41, a pressure gauge 43 is fixedly connected to the outer wall of the cylindrical seat 42, the front side of the cylindrical seat 42 is fixedly connected to the rear end of the pressure relief mechanism 6, a rotating disk 45 is rotatably connected to the inner wall of the chassis shell 41, four extrusion columns 46 are provided on the top of the rotating disk 45, four sliding grooves 47 are opened on the top of the chassis shell 41, the outer wall of the extrusion column 46 is slidably connected to the inner wall of the sliding groove 47, a spiral groove 451 is opened on the top of the rotating disk 45, and the spiral groove 451 is slidably connected to the bottom end of the four extrusion columns 46. An operating device is fixedly connected to one side of the rotating disk 45. The operating lever 452 extends to the outside of the chassis housing 41 and is slidably connected thereto. The valve is placed on the top of the chassis housing 41. The rotating disk 45 is rotated by the operating lever 452. At this time, it rotates at the bottom of the extrusion column 46 through the spiral groove 451. The bottom of the extrusion column 46 moves inward along the thread and is restricted by the sliding groove 47 on the chassis housing 41. Since the thread positions of the four extrusion columns 46 on the spiral groove 451 are different, but the lengths are different, the distances of the four extrusion columns 46 from the center point of the rotating disk 45 are the same. With the same moving speed, the four extrusion columns 46 move inward at the same time, extruding the flange around the valve, so that the mounting flange on the valve is at the center position of the rotating disk 45.

[0026] As shown in Figure 6, this utility model provides a technical solution for a valve body sealing detection device: Preferably, the pressure relief mechanism 6 includes a pneumatic rod 61, one end of which is fixedly connected to a fixed tube 65, the output shaft of the pneumatic rod 61 is fixedly connected to a movable shaft 62, one end of the movable shaft 62 is fixedly connected to a sealing plug 63, the outer wall of the sealing plug 63 is slidably connected to the inner wall of the fixed tube 65, a transparent tube 64 is fixedly connected through the rear side of the bottom of the fixed tube 65, and a drain pipe is fixedly connected to the bottom of the transparent tube 64. When the internal pressure of the cylindrical seat 42 increases, the sealing plug 63 is squeezed and moved into the pneumatic rod 61. Since the pneumatic rod 61 is also filled with high-pressure gas, only when the internal pressure of the cylindrical seat 42 exceeds the pressure of the pneumatic rod 61 will the sealing plug 63 be squeezed and moved to the transparent tube 64, and the high-pressure liquid will be discharged from the transparent tube 64, thereby preventing certain dangers caused by excessive internal pressure during the test and improving the safety of the device.

[0027] The working principle of this device will be explained in detail below.

[0028] like Figure 1-6As shown, the valve is first placed on top of the chassis shell 41. The rotating disk 45 is rotated by the operating lever 452. At this time, the valve rotates at the bottom of the extrusion column 46 via the spiral groove 451. The bottom of the extrusion column 46 moves inward along the thread, restricted by the sliding groove 47 on the chassis shell 41. Since the four extrusion columns 46 have different thread positions on the spiral groove 451 but different lengths, the distance between the four extrusion columns 46 and the center point of the rotating disk 45 is the same. With equal moving speeds, the four extrusion columns 46 move inward simultaneously, extruding pressure around the flange on the valve. This ensures that the mounting flange on the valve is now at the center of the rotating disk 45, thus guaranteeing that the pressure around the valve flange is the same during testing. After aligning the two ports of the valve with the chassis shell 41 and the extrusion disk 3 respectively, and ensuring they are in the center position, the electric hydraulic rod 2 is activated, causing the extrusion disk 3 to move downwards, firmly pressing the valve onto the top of the fixed chassis 4, thus installing the two flanges of the valve. The pressure plate performs a compression seal, reducing the installation time via flange bolts. The electro-hydraulic rod 2 ensures the sealing of the upper and lower compression valve ports. At this point, the pressure pump 5 is activated, and water from the tank is pumped through the water pump pipe 51 and the hole between the base shell 41 and the cylindrical seat 42 into the valve. The valve under test is closed, and the pressure gauge 43 begins to increase. The pressure pump 5 then stops and maintains a stable pressure, monitoring the pressure gauge 43 reading to check the valve's seal. A pressure relief mechanism 6 is located on the front of the cylindrical seat 42. When the internal pressure of the cylindrical seat 42 increases, the compression sealing plug 63 moves into the pneumatic rod 61. Since the pneumatic rod 61 also contains high-pressure gas, only when the internal pressure of the cylindrical seat 42 exceeds the pressure of the pneumatic rod 61 will the compression sealing plug 63 move rearward to the transparent tube 64, allowing the high-pressure liquid to drain out. This prevents excessive internal pressure during testing and improves the safety of the device.

[0029] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A valve body sealing detection device, comprising a housing (1), characterized in that: An electric hydraulic rod (2) is fixedly connected to the top of the outer shell (1), and an extrusion plate (3) is fixedly connected to the bottom of the electric hydraulic rod (2). A fixed base (4) is provided on the outer shell (1) directly below the extrusion plate (3). A pressure relief mechanism (6) is provided on the front side of the fixed base (4). A water pump pipe (51) is fixedly connected to the bottom of the fixed base (4). A pressure pump (5) is fixedly connected to the rear side of the water pump pipe (51). A water tank is fixedly connected through the bottom end of the water pump pipe (51).

2. The valve body sealing detection device according to claim 1, characterized in that: The bottom of the extrusion plate (3) is provided with a second water outlet (32), and the top of the outer wall of the extrusion plate (3) is provided with a first water outlet (31) that is connected to the second water outlet (32).

3. The valve body sealing detection device according to claim 1, characterized in that: The fixed chassis (4) includes a chassis shell (41), a cylindrical seat (42) is fixedly connected to the bottom of the chassis shell (41), a pressure gauge (43) is fixedly connected to the outer wall of the cylindrical seat (42), and the front side of the cylindrical seat (42) is fixedly connected to the rear end of the pressure relief mechanism (6).

4. The valve body sealing detection device according to claim 3, characterized in that: The inner wall of the chassis shell (41) is rotatably connected to a rotating disk (45), and the top of the rotating disk (45) is provided with four extrusion columns (46). The top of the chassis shell (41) is provided with four sliding grooves (47), and the outer wall of the extrusion column (46) is slidably connected to the inner wall of the sliding groove (47).

5. A valve body sealing detection device according to claim 4, characterized in that: The top of the rotating disk (45) is provided with a spiral groove (451), and the spiral groove (451) is slidably connected to the bottom end of the four extrusion columns (46). An operating rod (452) is fixedly connected to one side of the rotating disk (45), and the operating rod (452) extends to the outside of the chassis shell (41) and is slidably connected to it.

6. The valve body sealing detection device according to claim 1, characterized in that: The pressure relief mechanism (6) includes a pneumatic rod (61), one end of which is fixedly connected to a fixed tube (65). The output shaft of the pneumatic rod (61) is fixedly connected to a movable shaft (62). One end of the movable shaft (62) is fixedly connected to a sealing plug (63). The outer wall of the sealing plug (63) is slidably connected to the inner wall of the fixed tube (65). A transparent tube (64) is fixedly connected through the rear bottom of the fixed tube (65). A drain pipe is fixedly connected to the bottom of the transparent tube (64).

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