Valve sealing performance testing device

Abstract

The utility model discloses a valve sealing performance testing device which comprises a water tank, a movable plate is arranged in the water tank in an up-and-down sliding mode, a plurality of groups of first fixed connecting plates and second fixed connecting plates which are parallel to each other are fixed on one side of the movable plate, and a second air cylinder is fixed on one side, located in a connecting frame, of each first fixed connecting plate. The movable end of the second air cylinder penetrates through the first fixed connecting plate and is fixedly provided with a first sealing block, and a second sealing block opposite to the first sealing block is fixed to the center of the second fixed connecting plate. The utility model belongs to the technical field of valve sealing performance testing, and particularly relates to a valve sealing performance testing device.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve sealing property test technical field, specifically point to a valve sealing property testing device. BACKGROUND

[0002] In the valve production and maintenance process, valve sealing detection is a crucial link. The traditional bubble detection method is to place the valve in a liquid environment, fill a certain pressure gas into the valve, and judge the sealing property by observing whether the valve surface has bubbles. However, this method has obvious limitations.

[0003] Because the valve usually has a complex structure, when bubble detection is carried out, only one relative surface of the valve can be observed, and the other surface of the valve, especially the back surface of the valve seat and the hidden parts connected with the pipeline, etc. It is difficult to observe directly, which leads to that in the detection process, even if bubbles are found, it is difficult to determine exactly where the air leakage position is in the specific position of the valve. This uncertainty brings great difficulty to the maintenance and quality control of the valve, prolongs the maintenance time and cost, and reduces the production and maintenance efficiency. UTILITY MODEL CONTENTS

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a valve sealing property testing device, which effectively solves the problem that it is not convenient to determine the specific position of valve air leakage.

[0005] In order to realize the above function, the technical scheme adopted by the utility model is as follows: a valve sealing property testing device, comprising a water tank, a movable plate is slidably arranged in the water tank, a plurality of groups of mutually parallel fixed connection plates one and fixed connection plates two are fixed on one side of the movable plate, a gas cylinder two is fixed on one side of the fixed connection plate one in the connecting frame, the movable end of the gas cylinder two penetrates through the fixed connection plate one and is fixedly installed with a sealing block one, and a sealing block two opposite to the sealing block one is fixed at the center of the fixed connection plate two.

[0006] A U-shaped fixed top frame is arranged above the movable plate and fixed on the top of the water tank, a vertical gas cylinder one is fixedly connected between the top of the fixed top frame and the top of the movable plate, the movable end of the gas cylinder one is fixedly connected to the top surface of the movable plate, and a connecting component is arranged between the movable plate and the fixed connection plate one. Under the drive of the gas cylinder one, the connecting component drives the fixed connection plate one to rotate, so that the valve rotates and multi-directional observation is realized.

[0007] An air outlet channel is arranged in the sealing block one, and an air inlet structure connected to the air outlet channel is further arranged at the rear of the water tank, so as to fill a certain pressure gas into the valve.

[0008] Preferably, the connecting part comprises a gear, a connecting frame, a rack plate and a rotating shaft, the connecting frame is U-shaped and fixed on the fixed connecting plate one, one end of the rotating shaft is rotatably arranged on the outer side of the movable plate, the other end of the rotating shaft is fixed on the outer side of the connecting frame, the gear is fixedly sleeved on the rotating shaft, the rack plate is vertically arranged on the bottom surface of the sink and is in engagement with the gear.

[0009] Preferably, the fixed connecting plate one and the fixed connecting plate two are connected through a threaded rod, the threaded rod is fixed on the fixed connecting plate one and penetrates through the fixed connecting plate two, and two groups of nuts are arranged on the threaded rod and are in threaded connection with the threaded rod.

[0010] Preferably, the air inlet structure comprises an air pump, a connecting pipe, a fixed block and an air inlet pipe, the air pump is fixedly installed on the rear side of the sink, the fixed block is fixed on the rear side of the sink, the connecting pipe is fixed on the fixed block and connected with the air pump, and the air inlet pipe is connected to the air outlet passage of the sealing block one.

[0011] Preferably, the front of the fixed top frame is further provided with an air pressure gauge.

[0012] Preferably, the sink is further provided with a limiting groove, and the movable plate slides up and down relative to the limiting groove.

[0013] The utility model discloses adopt above-mentioned structure and obtain beneficial effect as follows:

[0014] 1, through the lifting drive connecting part of cylinder two multidirectional rotation to valve, when carrying out bubble detection, can in turn expose each face of valve in detection visual field, whether it is conventional external surface or the concealed face that is difficult to observe, can be effectively detected, greatly improves the accuracy of leak point positioning, and subsequent targeted maintenance processing is facilitated.

[0015] 2, can drive multiple valves to rotate simultaneously and observe uniformly, which improves the efficiency of valve detection work as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model discloses a kind of overall structure of valve tightness testing device Figure 1 .

[0017] Figure 2 The utility model discloses a kind of overall structure of valve tightness testing device Figure 2 .

[0018] Figure 3 The utility model discloses a kind of overall structure of valve tightness testing device Figure 3 .

[0019] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0020] Figure 5 This is a schematic diagram of the overall structure of a valve sealing performance testing device proposed in this utility model. Figure 4 .

[0021] The components are as follows: 1. Water tank; 2. Movable plate; 3. Fixed connecting plate one; 4. Fixed connecting plate two; 5. Cylinder two; 6. Sealing block one; 7. Sealing block two; 8. Fixed top frame; 9. Cylinder one; 10. Connecting component; 11. Air outlet channel; 12. Air inlet structure; 13. Gear; 14. Connecting frame; 15. Rack plate; 16. Rotating shaft; 17. Threaded rod; 18. Nut; 19. Air pump; 20. Connecting pipe; 21. Fixed block; 22. Air inlet pipe; 23. Air pressure gauge; 24. Limiting groove. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0024] like Figures 1-5As shown, the present invention proposes a valve sealing performance testing device, including a water tank 1, a movable plate 2 that slides up and down in the water tank 1, and a limiting groove 24 in the water tank 1. The movable plate 2 slides up and down relative to the limiting groove 24 to limit the movable plate 2 and increase its stability. Multiple sets of parallel fixed connecting plates 3 and 4 are fixed on one side of the movable plate 2. A cylinder 5 is fixed on one side of the fixed connecting plate 3 located in the connecting frame 14. The movable end of the cylinder 5 passes through the fixed connecting plate 3 and is fixedly installed with a sealing block 6. A sealing block 7 opposite to the sealing block 6 is fixed at the center of the fixed connecting plate 4. The cylinder 5 drives the sealing block 6 to approach the sealing block 7 to seal and fix the valve, which is convenient for testing. The fixed connecting plate 3 and the fixed connecting plate 4 are connected by a threaded rod 17. The threaded rod 17 passes through the fixed connecting plate 4 and is fixed on the fixed connecting plate 3. Two sets of nuts 18 that are threadedly connected to the threaded rod 17 are abutting on both sides of the fixed connecting plate 4 to fix the position of the fixed connecting plate 3.

[0025] like Figures 1-3 As shown, a U-shaped fixed top frame 8 is fixed to the top of the water tank 1 above the movable plate 2. A vertically arranged cylinder 9 is fixedly connected between the top of the fixed top frame 8 and the top of the movable plate 2. The movable end of the cylinder 9 is fixedly connected to the top surface of the movable plate 2. A connecting component 10 is provided between the movable plate 2 and the fixed connecting plate 3. Driven by the cylinder 9, the connecting component 10 drives the fixed connecting plate 3 to rotate, so that the valve rotates and multi-directional observation is achieved. An air outlet channel 11 is provided inside the sealing block 6. An air inlet structure 12 connected to the air outlet channel 11 is also provided behind the water tank 1 to fill the valve with gas at a certain pressure.

[0026] like Figure 4 As shown, the connecting component 10 includes a gear 13, a connecting frame 14, a rack plate 15, and a rotating shaft 16. The connecting frame 14 is U-shaped and fixed on the fixed connecting plate 3. One end of the rotating shaft 16 is rotatably mounted on the outer surface of the movable plate 2, and the other end of the rotating shaft 16 is fixed on the outer surface of the connecting frame 14. The gear 13 is fixedly sleeved on the rotating shaft 16. A vertically arranged rack plate 15 is fixed on the bottom surface of the water tank 1. The rack plate 15 and the gear 13 are meshed. When the movable plate 2 moves downward, it drives the gear 13 to rotate relative to the rack plate 15, thereby driving the rotating shaft 16 and the connecting frame 14 to rotate as a whole. The connecting frame 14 drives the fixed connecting plate 3 and the fixed connecting plate 4 to rotate as a whole, causing the valve to rotate.

[0027] like Figure 5As shown, the air intake structure 12 includes an air pump 19, a connecting pipe 20, a fixing block 21, and an air intake pipe 22. The air pump 19 is fixedly installed on the rear side of the water tank 1, the fixing block 21 is fixed on the rear side of the water tank 1, the connecting pipe 20 is fixed on the fixing block 21 and connected to the air pump 19, one end of the air intake pipe 22 is connected to the air intake pipe 22, and the other end is connected to the air outlet channel 11 of the sealing block 6 to fill the valve with gas. A pressure gauge 23 is also provided in front of the top frame 8 to facilitate observation of the pressure value.

[0028] In practical use, add clean water to the water tank 1, and place the outlet side of the valve against the sealing block 7. The cylinder 5 drives the sealing block 6 to approach the valve inlet, sealing and fixing both ends of the valve. Start the cylinder 9, which drives the movable plate 2 to move downward. The movable plate 2 drives the rotating shaft 16, gear 13, connecting frame 14, and the valve as a whole to move downward. Due to the meshing of gear 13 and rack plate 15, gear 13 and rotating shaft 16 rotate relative to each other during the downward movement, thereby driving the valve to rotate. Rotate the valve to below the clean water surface, start the air pump 19, and enter the air outlet channel 11 through the connecting pipe 20 to the air inlet pipe 22 to fill the valve with gas. Observe the pressure value through the pressure gauge. After reaching the set pressure, observe whether there are bubbles in the water. If the gas is on the back side, start the cylinder 9 again and repeat the above operation to rotate the valve, turning the back side to the front. Observe the position of the bubbles to determine the leakage location. After completing all the tests, turn off the air pump 19, release the cylinder 5, and remove the valve.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A valve sealing performance testing device, characterized in that: Includes a water tank (1), in which a movable plate (2) is slidably installed. On one side of the movable plate (2), there are multiple sets of parallel fixed connecting plates one (3) and fixed connecting plates two (4). On one side of the fixed connecting plate one (3) located in the connecting frame (14), a cylinder two (5) is fixed. The movable end of the cylinder two (5) passes through the fixed connecting plate one (3) and is fixedly installed with a sealing block one (6). At the center of the fixed connecting plate two (4), a sealing block two (7) opposite to the sealing block one (6) is fixed. A U-shaped fixed top frame (8) is fixed above the movable plate (2) and fixed to the top of the water tank (1). A vertically arranged cylinder (9) is fixedly connected between the top of the fixed top frame (8) and the top of the movable plate (2). The movable end of the cylinder (9) is fixedly connected to the top surface of the movable plate (2). A connecting component (10) is provided between the movable plate (2) and the fixed connecting plate (3). Under the drive of the cylinder (9), the connecting component (10) drives the fixed connecting plate (3) to rotate, so that the valve rotates and multi-directional observation is realized. The sealing block (6) is provided with an air outlet channel (11), and the water tank (1) is also provided with an air inlet structure (12) connected to the air outlet channel (11) to fill the valve with gas at a certain pressure.

2. The valve sealing performance testing device according to claim 1, characterized in that: The connecting component (10) includes a gear (13), a connecting frame (14), a rack plate (15), and a rotating shaft (16). The connecting frame (14) is U-shaped and fixed on a fixed connecting plate (3). One end of the rotating shaft (16) is rotatably disposed on the outer side of the movable plate (2), and the other end of the rotating shaft (16) is fixed on the outer side of the connecting frame (14). The gear (13) is fixedly sleeved on the rotating shaft (16). A vertically arranged rack plate (15) is fixed on the bottom surface of the water tank (1). The rack plate (15) and the gear (13) are meshed.

3. The valve sealing performance testing device according to claim 2, characterized in that: The first fixed connecting plate (3) and the second fixed connecting plate (4) are connected by a threaded rod (17). The threaded rod (17) passes through the second fixed connecting plate (4) and is fixed on the first fixed connecting plate (3). Two sets of nuts (18) that are threadedly connected to the threaded rod (17) are located on both sides of the second fixed connecting plate (4).

4. The valve sealing performance testing device according to claim 3, characterized in that: The air intake structure (12) includes an air pump (19), a connecting pipe (20), a fixing block (21), and an air intake pipe (22). The air pump (19) is fixedly installed on the rear side of the water tank (1). The fixing block (21) is fixed on the rear side of the water tank (1). The connecting pipe (20) is fixed on the fixing block (21) and connected to the air pump (19). One end of the air intake pipe (22) is connected to the air intake pipe (22), and the other end is connected to the air outlet channel (11) of the sealing block (6).

5. The valve sealing performance testing device according to claim 4, characterized in that: A pressure gauge (23) is also provided in front of the fixed top frame (8).

6. The valve sealing performance testing device according to claim 5, characterized in that: The water tank (1) is also provided with a limiting groove (24), and the movable plate (2) slides up and down relative to the limiting groove (24).

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