High-pressure-resistant stop valve detection device

Abstract

The utility model relates to the technical field of stop valve airtightness high-pressure detection devices, in particular to a high-pressure-resistant stop valve detection device which comprises a water tank, the bottom end of one side of the outer surface of the water tank is fixedly connected with an air pump, the top end of the air pump is connected with an air inlet pipe, and the end, away from the air pump, of the air inlet pipe is connected with an air conveying pipe through a connector. An air outlet pipe is arranged on the outer side of the air conveying pipe, a plurality of valve bodies are evenly arranged between the air conveying pipe and the air outlet pipe, the two sides of each valve body are connected with the air conveying pipe and an air outlet pipe flange respectively, supporting frames capable of moving up and down are arranged at the bottom ends of the air conveying pipe and the air outlet pipe, and lifting parts for controlling the supporting frames to move up and down are arranged around the outer surfaces of the supporting frames. The periphery and the top of the outer surface of the water tank are fixedly connected with a fixing frame, and a transmission part plug for driving the lifting part to work is arranged in the center of the bottom end of the fixing frame. According to the device, the transmission part and the lifting part are arranged, so that the purpose of simultaneously detecting a plurality of valve bodies is achieved, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure detection devices for the air tightness of globe valves, and particularly relates to a high-pressure detection device for high-pressure resistant globe valves. Background Technique

[0002] A globe valve, also called a stop valve, is one of the most widely used valves. It is widely popular because of the small friction between the sealing surfaces during the opening and closing process, relatively durable, small opening height, easy to manufacture, convenient to repair, and applicable not only to medium and low pressures but also to high pressures. The closing principle of the globe valve is to rely on the valve stem pressure to make the sealing surface of the valve flap closely fit with the sealing surface of the valve seat to prevent the medium from flowing through.

[0003] After retrieval, a Chinese utility model patent with the authorization announcement number of CN 209067933 U discloses a high-pressure detection device for a globe valve model, including a main body and a workbench. At the top inside the main body, there is an air bucket, and a piston is arranged inside the air bucket. An adjusting rod is connected above the piston. A gas chamber is placed on the right side of the main body, and an air extraction pump is arranged at the bottom right inside the gas chamber. An air suction pump is placed on the left side of the air extraction pump. A fan blade is arranged at the bottom inside the main body. A mounting plate is installed below the air bucket. Fixing plates are fixed on the left and right side walls inside the main body. The sliding rod is fixedly welded to the fixing plate. A clamping groove is arranged on the surface of the workbench, and the workbench is located below the mounting plate. This high-pressure detection device for the air tightness of the globe valve is provided with a main body. An air bucket is arranged above the main body. The air bucket and the piston are mutually embedded and cooperate with each other to form a piston device. The piston is connected to the gas chamber through an adjusting rod.

[0004] Although the above device can achieve the air tightness detection of the valve body, there are still the following technical problems:

[0005] 1. When the air extraction pump extracts air, the air inside the main body is discharged. At this time, a pressure difference is formed inside and outside the main body, and the rapid flow of air will inevitably drive the fan blade to rotate, thus affecting the accuracy of the air tightness detection.

[0006] 2. The operation difficulty of the above device is large. It is necessary to completely exhaust the air in the gas chamber to reach a vacuum state, and the technical difficulty of achieving the above effect is very high, with excessive energy consumption.

[0007] 3. The above device can only detect the air tightness of the valve body itself, but cannot detect the problem of poor air tightness caused by the manufacturing precision problem of the valve body after installation.

[0008] In summary, it is very necessary to provide a new high-pressure resistant globe valve detection device. Content of the Utility Model

[0009] In view of the deficiencies of the prior art, the utility model provides a high-pressure resistant globe valve detection device, which effectively solves the technical problems proposed in the background art.

[0010] The technical solution adopted by the utility model to solve the above problems is: a high-pressure resistant globe valve detection device, including a water tank, a support frame that can move up and down is arranged in the water tank, an airtightness detection device is arranged on the upper surface of the support frame, a lifting part for controlling the up and down movement of the support frame is arranged around the outer surface of the support frame, a fixed frame is fixedly connected above the water tank, and a transmission part for driving the lifting part to work is arranged at the top of the fixed frame. The airtightness detection device includes an air delivery pipe arranged on one side of the outer surface of the support frame, an air pump is fixedly connected to the outside of the water tank, the output end of the air pump is connected to one end of the air delivery pipe through an air inlet pipe and a connector, an air outlet pipe parallel to the air delivery pipe is slidably connected to the other side of the outer surface of the support frame, detachable pipe plugs are respectively arranged at the two ends of the other end of the air delivery pipe and the air outlet pipe, and a plurality of connecting pipes for connecting with the valve body are evenly fixedly connected to the outer surfaces of the opposite sides of the air delivery pipe and the air outlet pipe.

[0011] Preferably, the support frame includes a frame, a vertical plate is longitudinally connected at the center position of the frame, an arc groove for supporting the bottom of the valve body is arranged on the upper surface of the vertical plate, a water leakage groove for avoiding water accumulation is arranged at the bottom end of the arc groove, a plurality of transverse plates for supporting the air outlet pipe are evenly fixedly connected between the outer surface of one side of the vertical plate and the frame, transverse limiting grooves are respectively arranged on the upper surfaces of the plurality of transverse plates, trapezoidal grooves are respectively arranged on the left and right sides of the inner wall of the limiting groove, limiting sleeves corresponding to the transverse plates are evenly sleeved on the outer surface of the air outlet pipe, and trapezoidal blocks adapted to the trapezoidal grooves are fixedly connected to the bottom ends of the limiting sleeves. Fixed sleeves are respectively fixedly connected to the outer surfaces of the two ends of the air delivery pipe, and the bottom ends of the fixed sleeves are respectively fixedly connected to the two ends of the upper surface of one side of the frame.

[0012] Preferably, T-shaped sliding grooves are respectively arranged on the longitudinal inner walls of the water tank, and T-shaped sliding blocks adapted to the T-shaped sliding grooves are evenly fixedly connected to the outer surface of the frame close to the inner wall of the water tank.

[0013] Preferably, a first box body is fixedly connected to the center position of the top of the fixing frame. A rotatable first transmission shaft penetrates through the center position of the first box body horizontally. A first bevel gear is fixedly connected to the center position of the outer surface of the first transmission shaft. A motor is coaxially fixedly connected to the rear end of the bevel gear located in the longitudinal position. The top end of the motor is fixedly connected to the outer surface of the top end of the fixing frame. Second box bodies are respectively arranged at both ends of the first transmission shaft. A second bevel gear set is arranged inside the second box bodies. Second transmission shafts penetrate through and are rotatably connected to the outer surfaces of the second box bodies longitudinally. The first transmission shaft is connected to the two second transmission shafts respectively through the second bevel gear sets. Third box bodies are respectively fixedly connected to the four peripheral positions of the outer surface of the top end of the fixing frame. Both ends of the second transmission shaft penetrate through the outer surfaces of one side of the third box bodies respectively, and worm gears are fixedly connected to both ends of the second transmission shaft respectively. The worm gears are rotatably connected to the inner walls of the longitudinal two sides of the third box bodies. The inner walls of the bottoms of the four third box bodies are respectively rotatably connected to worm wheels meshing with the worm gears. A threaded rod capable of moving up and down is threadedly connected to the center position of the upper surface of the worm wheels. The bottoms of the four threaded rods are respectively fixedly connected to the four peripheral positions of the upper surface of the support frame.

[0014] Preferably, one end of the air outlet pipe is threadedly connected to a three-way pipe, and a pressure gauge is threadedly connected to the top end of the three-way pipe.

[0015] Preferably, the air inlet pipe is a metal flexible pipe.

[0016] The structure of the utility model is novel, ingeniously conceived, simple and convenient to operate, and has the following advantages compared with the prior art:

[0017] 1. By arranging the support frame, the support for multiple valve bodies is realized, the purpose of detecting multiple valve bodies simultaneously is achieved, and the working efficiency of the device is improved.

[0018] 2. By arranging the transmission part and the lifting part for driving the support frame to move up and down, the labor intensity of the user is reduced, and by arranging the air pump, the user only needs to observe whether there are bubbles generated, the operation is simple and the use is convenient.

[0019] 3. By arranging the movable air outlet pipe, the detection requirements for valve bodies of different sizes are met, the applicable range of the device is expanded, and the valve body is flange-connected to the air delivery pipe and the air outlet pipe, achieving the purpose of simulating the working environment of the valve body and improving the detection accuracy.

[0020] 4. By arranging the pressure gauge, the detection of the pressure resistance of the valve body is further realized, and the functionality and practicality of the device are further improved. Description of the Drawings

[0021] Figure 1 It is a three-dimensional view of a high-pressure resistant globe valve detection device of the utility model.

[0022] Figure 2Schematic diagram of the internal structure of the water tank of a high-pressure resistant globe valve detection device of the present utility model.

[0023] Figure 3 Schematic diagram of the top structure of the support frame of a high-pressure resistant globe valve detection device of the present utility model.

[0024] Figure 4 Schematic diagram of the bottom structure of the support frame of a high-pressure resistant globe valve detection device of the present utility model.

[0025] Figure 5 Schematic diagram of the lifting part structure of a high-pressure resistant globe valve detection device of the present utility model.

[0026] Figure 6 Schematic diagram of the transmission part structure of a high-pressure resistant globe valve detection device of the present utility model.

[0027] 1 - water tank, 2 - air pump, 3 - intake pipe, 4 - connector, 5 - air delivery pipe, 6 - outlet pipe, 7 - valve body, 8 - support frame, 9 - T-shaped sliding groove, 10 - fixing frame, 11 - lifting part, 12 - transmission part, 13 - three-way pipe, 14 - pressure gauge, 15 - frame, 16 - vertical plate, 17 - water leakage groove, 18 - T-shaped slider, 19 - horizontal plate, 20 - limiting groove, 21 - fixing sleeve, 22 - limiting sleeve, 23 - trapezoidal block, 24 - trapezoidal groove, 25 - motor, 26 - first box body, 27 - second box body, 28 - third box body, 29 - threaded rod, 30 - first bevel gear set, 31 - second bevel gear set, 32 - first transmission shaft, 33 - second transmission shaft, 34 - worm gear, 35 - worm, 36 - pipe plug. Detailed implementation manners

[0028] The following are specific embodiments of the present utility model, and the technical solutions of the present utility model are further described in conjunction with the accompanying drawings, but the present utility model is not limited to these embodiments.

[0029] Embodiment 1

[0030] As Figure 1-6As shown in the figure, the utility model provides a high-pressure resistant globe valve detection device, which includes a water tank 1. A support frame 8 that can move up and down is arranged in the water tank 1. An airtightness detection device is arranged on the upper surface of the support frame 8. A lifting part 11 for controlling the up and down movement of the support frame 8 is arranged around the outer surface of the support frame 8. A fixed frame 10 is fixedly connected above the water tank 1. A transmission part 12 for driving the lifting part 11 to work is arranged at the top of the fixed frame 10. The airtightness detection device includes an air delivery pipe 5 arranged on one side of the outer surface of the support frame 8. An air pump 2 is fixedly connected to the outside of the water tank 1. The output end of the air pump 2 is connected to one end of the air delivery pipe 5 through an air inlet pipe 3 and a connector 4. A gas outlet pipe 6 parallel to the air delivery pipe 5 is slidably connected to the other side of the outer surface of the support frame 8. Removable pipe plugs 36 are respectively arranged at the two ends of the other end of the air delivery pipe 5 and the gas outlet pipe 6. A plurality of connecting pipes for connecting with the valve body 7 are uniformly and fixedly connected to the outer surfaces of the opposite sides of the air delivery pipe 5 and the gas outlet pipe 6.

[0031] By flange connecting the valve body 7 through the air delivery pipe 5 and the gas outlet pipe 6, the purpose of simulating the working environment of the valve body is achieved, which is convenient for more accurately detecting the airtightness of the valve body 7.

[0032] The support frame 8 includes a frame 15. A longitudinal plate 16 is longitudinally connected at the central position of the frame 15. An arc-shaped groove for supporting the bottom of the valve body 7 is arranged on the upper surface of the longitudinal plate 16. A water leakage groove 17 for avoiding water accumulation is arranged at the bottom end of the arc-shaped groove. A plurality of transverse plates 19 for supporting the gas outlet pipe 6 are uniformly and fixedly connected between the outer surface of one side of the longitudinal plate 16 and the frame 15. Transverse limiting grooves 20 are respectively arranged on the upper surfaces of the plurality of transverse plates 19. Trapezoidal grooves 24 are respectively arranged on the left and right sides of the inner wall of the limiting groove 20. Limiting sleeves 22 corresponding to the transverse plates 19 are uniformly sleeved on the outer surface of the gas outlet pipe 6. A trapezoidal block 23 adapted to the trapezoidal groove 24 is fixedly connected to the bottom end of the limiting sleeve 22. Fixed sleeves 21 are respectively fixedly connected to the outer surfaces of the two ends of the air delivery pipe 5. The bottom ends of the fixed sleeves 21 are respectively fixedly connected to the two ends of the upper surface of one side of the frame 15.

[0033] By arranging the longitudinal plate 16, the support for the bottom end of the valve body 7 is realized. And by arranging the water leakage groove 17, the discharge of the moisture inside the arc-shaped groove is realized. By arranging the transverse plate 20 and the limiting groove 20, not only the position limitation of the gas outlet pipe 6 is realized to increase the stability of the device, but also the position adjustment of the gas outlet pipe 6 is further realized, meeting the detection requirements of valve bodies of different specifications, expanding the applicable range of the device. By arranging the trapezoidal groove 24, the problem of water accumulation in the groove is avoided.

[0034] T-shaped sliding grooves 9 are respectively arranged on the longitudinal inner walls of the water tank 1. T-shaped sliding blocks 18 adapted to the T-shaped sliding grooves 9 are uniformly and fixedly connected to the outer surface of one side of the frame 15 close to the inner wall of the water tank 1.

[0035] By setting the T-shaped chute 9 and the T-shaped slider 18, the position of the support frame 8 is limited, and the stability of the support frame 8 during the lifting process is increased.

[0036] At the central position of the top of the fixed frame 10, a first box body 26 is fixedly connected. A rotatable first transmission shaft 32 passes through the central position of the first box body 26 horizontally. At the central position of the outer surface of the first transmission shaft 32, a first bevel gear 30 is fixedly connected. At the rear end of the bevel gear in the longitudinal position, a motor 25 is coaxially fixedly connected. The top end of the motor 25 is fixedly connected to the outer surface of the top end of the fixed frame 10. At both ends of the first transmission shaft 32, second box bodies 27 are respectively provided. Inside the second box bodies 27, second bevel gear sets 31 are provided. The outer surfaces of the two second box bodies 27 are respectively longitudinally penetrated and rotatably connected with second transmission shafts 33. The first transmission shaft 32 is connected to the two second transmission shafts 33 respectively through the second bevel gear sets 31. Around the outer surface of the top end of the fixed frame 10, third box bodies 28 are respectively fixedly connected. Both ends of the second transmission shaft 33 respectively penetrate the outer surface of one side of the third box body, and both ends of the second transmission shaft 33 are respectively fixedly connected with worm gears 35. The worm gears 35 are rotatably connected to the inner walls of the longitudinal two sides of the third box body 28. The inner walls of the bottoms of the four third box bodies 28 are respectively rotatably connected with worm wheels 34 meshing with the worm gears 35. At the central position of the upper surface of the worm wheels 34, threaded rods 29 that can move up and down are threadedly connected. The bottoms of the four threaded rods 29 are respectively fixedly connected to the four corners of the upper surface of the support frame 8.

[0037] The working process of the transmission part 12 and the lifting part 11 is as follows: The motor 25 drives the first transmission shaft 32 to work through the first bevel gear set 30. The first transmission shaft 32 drives the two second transmission shafts 33 to work by driving the two second bevel gear sets 31. The two second transmission shafts 33 drive the four worm gears 35 to rotate. During the rotation of the worm gears 35, the worm wheels 34 are driven to rotate. During the rotation of the worm wheels 34, the threaded rods 29 are driven to move up and down, thereby driving the support frame 8 to move up and down. The transmission part 12 can synchronously drive the four threaded rods 29 to move up and down, avoiding the inclination of the support frame 8, further increasing the stability of the device. Moreover, the device adopts a mechanical structure, and the manufacturing and maintenance costs are low.

[0038] The specific usage method of the above solution is as follows:

[0039] Inject water into the water tank 1 with the water surface lower than the support frame 8. Block the air delivery pipe 5 and the air outlet pipe 6 with the pipe plug 36. Then, pull the air outlet pipe 6 so that a valve body 7 can be placed between the air outlet pipe 6 and the air delivery pipe 5. Place multiple valve bodies 7 on the upper surface of the longitudinal plate 16 respectively. First, flange-connect the valve body 7 to the air delivery pipe 5, and then move the air outlet pipe 6. The air outlet pipe 6 is then flange-connected to the valve body 7. Then, drive the lifting part 11 to work through the transmission part 12. The lifting part 11 is driven by the transmission part 12 to move the threaded rod 29 downward, thereby driving the support frame 8 to move downward until the valve body 7 is immersed in the water surface. Then, drive the air pump 2 to work. When the air pump 2 works, it delivers air into the valve body 7 through the air delivery pipe 5. Finally, the gas enters the air outlet pipe 6. If the airtightness of the valve body 7 is poor, there should be bubbles discharged from the water tank 7 at this time. This device can detect multiple valve bodies simultaneously. Since the valve bodies are flange-connected during the detection, the purpose of simulating the working environment of the valve body is achieved, avoiding the problem of poor airtightness caused by errors in the manufacturing accuracy and installation of the valve body. This increases the practicality and functionality of this device.

[0040] Embodiment 2

[0041] The lifting part is four lifting cylinders fixedly connected to the outer surface around the top of the fixed frame 10.

[0042] Embodiment 3

[0043] As Figure 4 shown

[0044] One end of the air outlet pipe 6 is threadedly connected to a three-way pipe 13, and the top of the three-way pipe 13 is threadedly connected to a pressure gauge 14.

[0045] Setting the pressure gauge 14 can simultaneously perform the pressure resistance test of the stop valve when detecting the airtightness of the valve body.

[0046] Generally speaking, this device can batch-detect the airtightness and pressure resistance performance of the valve body, not only improving the detection efficiency, but also further increasing the functionality and practicality of this device. It can be applicable to the detection of valve bodies of different sizes, with a wide range of applications.

[0047] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A high-pressure stop valve detection device, comprising a water tank (1), characterized in that: The water tank (1) is provided with a support frame (8) that can move up and down, an airtightness detection device is provided on the upper surface of the support frame (8), a lifting part (11) for controlling the upward and downward movement of the support frame (8) is provided around the outer surface of the support frame (8), a fixing frame (10) is fixedly connected above the water tank (1), and a transmission part (12) for driving the lifting part (11) to work is provided on the top of the fixing frame (10), the airtightness detection device includes an air delivery pipe (5) arranged on one side of the outer surface of the support frame (8), and the water tank ( An air pump (2) is fixedly connected to the outer side of the support frame (8), the output end of the air pump (2) is connected to one end of the air supply pipe (5) through an air inlet pipe (3) and a connector (4), an air outlet pipe (6) parallel to the air supply pipe (5) is slidably connected to the other side of the outer surface of the support frame (8), the other end of the air supply pipe (5) and the two ends of the air outlet pipe (6) are respectively provided with detachable pipe plugs (36), and the outer surfaces of the opposite sides of the air supply pipe (5) and the air outlet pipe (6) are respectively and evenly fixedly connected with a plurality of connecting pipes for connecting to the valve body (7).

2. A high pressure resistant stop valve detection device as claimed in claim 1, characterized in that: The support frame (8) comprises a frame (15), a longitudinal plate (16) is longitudinally connected to the center of the frame (15), an arc-shaped groove for supporting the bottom of the valve body (7) is provided on the upper surface of the longitudinal plate (16), a water leakage groove (17) for preventing water accumulation is provided at the bottom end of the arc-shaped groove, a plurality of transverse plates (19) for supporting the air outlet pipe (6) are evenly fixedly connected between the outer surface of one side of the longitudinal plate (16) and the frame (15), and the upper surfaces of the plurality of transverse plates (19) are respectively provided with transverse limit The limiting groove (20) is provided with a trapezoidal groove (24) on the left and right sides of the inner wall of the limiting groove (20), the outer surface of the air outlet pipe (6) is evenly sleeved with a limiting sleeve (22) corresponding to the horizontal plate (19), the bottom end of the limiting sleeve (22) is fixedly connected with a trapezoidal block (23) adapted to the trapezoidal groove (24), the outer surfaces of the two ends of the air delivery pipe (5) are respectively fixedly connected with fixing sleeves (21), and the bottom ends of the fixing sleeves (21) are respectively fixedly connected to the two ends of the upper surface of one side of the frame (15).

3. A high pressure resistant stop valve detection device as claimed in claim 2, characterized in that: The longitudinal inner wall of the water tank (1) is provided with a T-shaped slide groove (9), and the outer surface of the frame (15) close to the inner wall of the water tank (1) is evenly and fixedly connected with a T-shaped sliding block (18) adapted to the T-shaped slide groove (9).

4. A high pressure resistant stop valve detection device as claimed in claim 3, characterized in that: The center position of the top of the fixed frame (10) is fixedly connected to a first box body (26), a rotatable first transmission shaft (32) is passed through the center position of the first box body (26) in the horizontal direction, a first bevel gear (30) is fixedly connected to the center position of the outer surface of the first transmission shaft (32), a rear end of the bevel gear located in the longitudinal position is coaxially fixedly connected to a motor (25), a top end of the motor (25) is fixedly connected to the outer surface of the top end of the fixed frame (10), two ends of the first transmission shaft (32) are respectively provided with a second box body (27), a second bevel gear set (31) is provided inside the second box body (27), the outer surfaces of the two second box bodies (27) are respectively passed through longitudinally and rotatably connected to second transmission shafts (33), the first transmission shaft (32) The fixing frame (10) is connected to the two second transmission shafts (33) through the second bevel gear sets (31), and the third box body (28) is fixedly connected to the outer surface of the top of the fixing frame (10) at four sides. The two ends of the second transmission shaft (33) respectively penetrate the outer surface of one side of the third box body, and the two ends of the second transmission shaft (33) are fixedly connected to the worm (35), and the worm (35) is rotatably connected to the inner walls of the two longitudinal sides of the third box body (28). The inner walls of the bottom ends of the four third boxes (28) are rotatably connected to worm wheels (34) meshing with the worm wheels (35). The center position of the upper surface of the worm wheel (34) is threadedly connected to a threaded rod (29) that can move up and down, and the bottom ends of the four threaded rods (29) are fixedly connected to the upper surface of the supporting frame (8) at four sides.

5. A high pressure stop valve detection device as claimed in claim 1, characterized in that: One end of the air outlet pipe (6) is threadedly connected to a three-way pipe (13), and the top end of the three-way pipe (13) is threadedly connected to a pressure gauge (14).

6. A high pressure resistant stop valve detection device as claimed in claim 1, characterized in that: The air intake pipe (3) is a metal hose.

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