CN221764810U - A seal detection device - Google Patents

Abstract

The utility model discloses a sealing element detection device, which relates to the field of sealing detection and comprises a workbench, a driving device and a slide rheostat, wherein a limit ring is arranged on the workbench, a sealing ring to be detected is arranged in the limit ring, and a compression inflation assembly is arranged above the limit ring; an inflation tube is fixedly connected in the limit ring; the compression air charging device can compress the sealing ring to simulate the daily use environment, and can also enable air to enter the second inflator through the air charging pipe, if the sealing ring is qualified, no air leakage exists, and the air can smoothly drive the second piston and the driving rod to move right under the condition of compressing the second spring, so that the sliding rheostat outputs a certain resistance value, and if the resistance value is larger than a standard resistance value, the air quantity entering the second inflator can be judged to be enough, and the sealing ring is indirectly judged to be qualified in sealing; otherwise, the sealing ring is unqualified; the detection result can be obtained once, the sealing ring does not need to be turned over, and the detection is more convenient.

Description

A seal detection device

Technical Field

The utility model relates to the field of sealing detection, in particular to a sealing component detection device.

Background Art

There are many places on existing aviation equipment that need to be sealed, and some special sealing rings are needed for sealing. In order to ensure the sealing performance of the sealing rings, the existing sealing rings are usually inspected visually during factory inspection. During the inspection, the appearance of the sealing rings needs to be visually observed to pick out those with surface defects. The inspection process also requires the sealing rings to be turned over to facilitate inspection of the other side, which is prone to missed inspections. In addition, some subtle defects and gaps are difficult to distinguish through visual inspection, which will bring hidden dangers to later use.

Utility Model Content

The purpose of the utility model is to provide a sealing component detection device to solve the problems mentioned in the above background technology.

A sealing component detection device comprises a workbench, a driving device and a sliding rheostat, wherein a limit ring is arranged on the workbench, a sealing ring to be detected is arranged inside the limit ring, a compression and inflation assembly is arranged above the limit ring, the compression and inflation assembly comprises a hydraulic cylinder, a pressure plate and an air cylinder, the pressure plate is fixedly connected to the bottom of the air cylinder, an air outlet pipe is arranged at the bottom of the air cylinder, the air outlet pipe passes through the pressure plate, a piston is slidably connected inside the air cylinder, a lower pressure rod is fixedly connected to the piston, a cylinder cover is arranged on the top of the air cylinder, the top of the lower pressure rod passes through the cylinder cover and is fixedly connected to a connecting block, the connecting block is fixedly connected to the output shaft of the hydraulic cylinder, and a spring is arranged between the cylinder cover and the connecting block;

An inflation tube is fixedly connected inside the limit ring. The gas cylinder fills the gas into the cavity formed by the pressure plate, the sealing ring and the workbench, and transports the gas to the driving device through the inflation tube. The driving device uses the gas to drive the slider in the sliding rheostat to move. The sliding rheostat is connected to a background device for detecting resistance value. The resistance value is used to determine the amount of gas sent into the driving device, thereby determining whether the sealing ring is leaking.

Preferably, a sealing gasket is provided between the pressure plate and the air cylinder and is sleeved on the outside of the air outlet pipe.

Preferably, a frame is provided on the workbench, the hydraulic cylinder is fixedly connected to the frame, a sliding rod is fixedly connected to the pressure plate, and the sliding rod is slidably connected to the frame.

Preferably, the driving device includes a fixed plate and an air cylinder 2, the left end of the air cylinder 2 is provided with an air inlet connected to the inflation tube, a piston 2 is slidably connected inside the air cylinder 2, a driving rod is fixedly connected to the piston 2, the driving rod passes through the left end of the air cylinder 2 and is fixedly connected to a push plate, and the push plate is fixedly connected to the sliding vane of the sliding rheostat.

Preferably, a baffle and a limit plate are provided between the push plate and the left side wall of the second air cylinder from left to right, the baffle is fixedly connected to the driving rod, the limit plate is fixedly connected to the workbench, the driving rod is slidably connected to the limit plate, and a spring is provided on the driving rod between the baffle and the limit plate.

The advantages of the utility model are:

The compression and inflation device can compress the sealing ring to simulate the daily use environment, and inflate the closed cavity formed by the pressing plate, the workbench and the sealing ring during the downward movement of the piston. The gas then enters the second gas cylinder through the inflation tube. If the sealing ring is qualified, there is no leakage. The gas can smoothly drive the second piston and the driving rod to move right under the condition of compressing the second spring, so that the sliding rheostat outputs a certain resistance value. If the resistance value is greater than the standard resistance value, it can be judged that the amount of air entering the second gas cylinder is sufficient, and indirectly judged that the sealing ring is qualified.

On the contrary, the amount of air entering the second cylinder is insufficient, the sealing ring leaks, and it is judged that the sealing ring is unqualified;

The test result can be obtained at one time without turning over the sealing ring, so the test is more convenient.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is an overall cross-sectional view of the utility model;

FIG2 is a partial enlarged view of point A in FIG1;

Figure 3 is a schematic diagram of the structures above the workbench;

FIG. 4 is a schematic diagram of various structures below the workbench.

In the figure: 1, workbench; 2, driving device; 21, fixing plate; 22, second air cylinder; 221, air inlet; 23, second piston; 24, driving rod; 25, push plate; 26, baffle; 27, limit plate; 28, second spring;

3. Sliding rheostat; 31. Sliding piece; 4. Limiting ring; 5. Sealing ring;

6. Compress the inflation assembly; 60. Hydraulic cylinder; 61. Press plate; 62. Air cylinder 1; 621. Exhaust pipe; 63. Piston 1; 64. Down-pressing rod; 65. Cylinder cover; 66. Connecting block; 67. Spring 1; 68. Sealing pad; 69. Sliding rod; 7. Inflatable tube; 8. Frame.

DETAILED DESCRIPTION

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

As shown in Figures 1 to 4, a sealing component detection device includes a workbench 1, a driving device 2 and a sliding rheostat 3. A limit ring 4 is provided on the workbench 1. The inner side of the limit ring 4 is chamfered to facilitate the installation of a sealing ring 5. A sealing ring 5 to be detected is provided inside the limit ring 4. A compression and inflation component 6 is provided above the limit ring 4. The compression and inflation component 6 includes a hydraulic cylinder 60, a pressure plate 61 and an air cylinder 62. The pressure plate 61 is fixedly connected to the bottom of the air cylinder 62. An air outlet pipe 621 is provided at the bottom of the air cylinder 62, and the air outlet pipe 621 penetrates the pressure plate 61. A piston 63 is slidably connected in the air cylinder 62, and a pressing rod 64 is fixedly connected to the piston 63. A cylinder cover 65 is provided at the top of the air cylinder 62, and the top of the pressing rod 64 passes through the cylinder cover 65 and is fixedly connected to a connecting block 66. The connecting block 66 is fixedly connected to the output shaft of the hydraulic cylinder 60, and a spring 67 is provided between the cylinder cover 65 and the connecting block 66.

An inflation tube 7 is fixedly connected to the limit ring 4, and the gas cylinder 62 fills the gas into the cavity formed by the pressure plate 61, the sealing ring 5 and the workbench 1, and transports the gas to the driving device 2 through the inflation tube 7. The driving device 2 uses the gas to drive the slider 31 in the sliding rheostat 3 to move. The sliding rheostat 3 is connected to the background resistance detection equipment, and the resistance value is used to judge the amount of gas sent into the driving device 2, thereby judging whether the sealing ring 5 is leaking.

In this embodiment, a sealing gasket 68 is further provided between the pressure plate 61 and the air cylinder 62 and is sleeved on the outside of the air outlet pipe 621 .

In this embodiment, a frame 8 is provided on the workbench 1 , the hydraulic cylinder 60 is fixedly connected to the frame 8 , a sliding rod 69 is fixedly connected to the pressing plate 61 , and the sliding rod 69 is slidably connected to the frame 8 .

In this embodiment, the driving device 2 includes a fixed plate 21 and an air cylinder 22. The left end of the air cylinder 22 is provided with an air inlet 221 connected to the inflation tube 7. A piston 23 is slidably connected inside the air cylinder 22. A driving rod 24 is fixedly connected to the piston 23. The driving rod 24 passes through the left end of the air cylinder 22 and is fixedly connected to a push plate 25. The push plate 25 is fixedly connected to the sliding plate 31 of the sliding rheostat 3.

In this embodiment, a baffle 26 and a limit plate 27 are provided from left to right between the push plate 25 and the left side wall of the air cylinder 22. The baffle 26 is fixedly connected to the drive rod 24, and the limit plate 27 is fixedly connected to the workbench 1. The drive rod 24 is slidably connected to the limit plate 27. A spring 28 is provided on the drive rod 24 between the baffle 26 and the limit plate 27. The spring 28 can be used to reset the drive rod 24.

Working process and principle:

The initial position of the piston 23 in this device is located at the leftmost end of the gas cylinder 22. The more the sliding piece 31 of the sliding rheostat 3 moves to the right, the greater the resistance value.

When in use, the sealing ring 5 to be tested is first placed into the limiting ring 4 for positioning.

Then the hydraulic cylinder 60 is started, and the hydraulic cylinder 60 drives the connection block 66, the lower pressure rod 64 and the piston downward in turn. During the downward movement of the connection block 66, due to the existence of the spring 67, the air cylinder 62 and the pressure plate 61 can move downward along with it, and the pressure plate 61 is pressed tightly on the sealing ring 5. The pressure plate 61 and the air cylinder 62 cannot move further downward, but the lower pressure rod 64 can drive the piston 63 to continue to move downward, the spring 67 is compressed, and the sealing ring 5 is further pressed and sealed.

As piston 1 63 moves downward in gas cylinder 1 62, gas cylinder 1 62 inflates the cavity formed between pressure plate 61, sealing ring 5 and workbench 1, and the gas enters gas cylinder 2 22 through gas filling tube 7, and pushes piston 23 and driving rod 24 to move right by overcoming the elastic force of spring 2 28, and the sliding piece 31 of sliding rheostat 3 moves accordingly, and sliding rheostat 3 outputs a resistance value.

If the sealing ring 5 leaks, the amount of gas entering the gas cylinder 22 is insufficient, the displacement of the driving rod 24 is small, the sliding piece 31 of the sliding rheostat 3 does not move far enough, and the resistance value is less than the standard resistance value, then it can be concluded that the sealing ring 5 is leaking and unqualified;

On the contrary, if the amount of gas entering the gas cylinder 22 is sufficient and the resistance value is greater than the standard value, it can be concluded that the sealing ring 5 is airtight and qualified. The equipment for detecting the sliding rheostat 3 will display the result to the operator through a display, so that the operator can judge.

Afterwards, the hydraulic cylinder 60 is reset, the pressing plate 61 is moved upward, and the piston 1 63 and the piston 23 are reset respectively under the action of the spring 1 67 and the spring 28. Then the tested sealing ring 5 can be taken out.

It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims (5)

1. The utility model provides a sealing member detection device, its characterized in that includes workstation (1), drive arrangement (2) and slide rheostat (3), be equipped with spacing collar (4) on workstation (1), be equipped with sealing washer (5) of waiting to detect in spacing collar (4), the top of spacing collar (4) is equipped with compresses tightly inflation subassembly (6), compress tightly inflation subassembly (6) including pneumatic cylinder (60), clamp plate (61) and inflator first (62), clamp plate (61) fixed connection is in the bottom of inflator first (62), the bottom of inflator first (62) is equipped with outlet duct (621), outlet duct (621) run through clamp plate (61), the sliding connection has piston first (63) in inflator first (62), fixedly connected with down the depression bar (64) on piston first (63), the top of inflator first (62) is equipped with barrel cap (65), the top of depression bar (64) passes barrel cap (65) and fixedly connected with connecting block (66), connecting block (66) and the output shaft of pneumatic cylinder first (62) are fixedly connected with barrel cap (67), be equipped with between connecting block (67);

the utility model discloses a gas-tight sealing device for the gas-tight sealing device of the gas-tight sealing device, including spacing collar (4) internal fixation has gas-filled tube (7), in gas-filled tube (62) fills the cavity that clamp plate (61), sealing washer (5) and workstation (1) formed into to carry gas to drive arrangement (2) through gas-filled tube (7), slide sheet (31) removal in drive arrangement (2) utilized gas drive slide rheostat (3), slide rheostat (3) are connected with the equipment of backstage detection resistance, judge the quantity of sending into gas in drive arrangement (2) through the resistance, thereby judge whether sealing washer (5) leak gas.

2. The sealing member detecting apparatus according to claim 1, wherein a gasket (68) is further provided between the pressing plate (61) and the inflator (62) and is fitted over the outer side of the air outlet pipe (621).

3. A sealing member detection apparatus according to claim 1, wherein the workbench (1) is provided with a frame (8), the hydraulic cylinder (60) is fixedly connected with the frame (8), the pressing plate (61) is fixedly connected with a sliding rod (69), and the sliding rod (69) is slidably connected with the frame (8).

4. The sealing member detection device according to claim 1, wherein the driving device (2) comprises a fixing plate (21) and a second inflator (22), an air inlet (221) connected with an air charging pipe (7) is arranged at the left end of the second inflator (22), a second piston (23) is connected in a sliding manner in the second inflator (22), a driving rod (24) is fixedly connected to the second piston (23), the driving rod (24) penetrates through the left end of the second inflator (22) and is fixedly connected with a push plate (25), and the push plate (25) is fixedly connected with a sliding sheet (31) of the sliding rheostat (3).

5. The sealing element detection device according to claim 4, wherein a baffle (26) and a limiting plate (27) are further arranged between the push plate (25) and the left side wall of the second inflator (22) from left to right, the baffle (26) is fixedly connected with the driving rod (24), the limiting plate (27) is fixedly connected with the workbench (1), the driving rod (24) is slidably connected with the limiting plate (27), and a second spring (28) is sleeved on the driving rod (24) between the baffle (26) and the limiting plate (27).