An airbag device for water tightness testing

Abstract

This utility model provides an airbag device for a water tightness test, relating to the field of pipeline engineering testing technology. It includes a set of supports; a drain pipe fixedly installed on the top of the supports; and a fixing assembly symmetrically arranged inside the drain pipe. The fixing assembly includes an airbag body, a fixing ring, and a hydraulic cylinder. A fixing block is fixedly installed on the outer surface of the airbag body, and a slot is formed on the outer surface of the fixing block. A connecting block is slidably connected to the outer surface of the fixing block. This utility model, through the action of the fixing assembly, can form a stable limit and rigid fixation for the airbag body, effectively avoiding its axial displacement under water flow impact and uneven water pressure distribution. Simultaneously, the linkage of the mechanical structure enables convenient pulling out of the airbag, facilitating quick removal after the test, thereby improving the operational efficiency of the water tightness test and ensuring the sealing stability throughout the test.

Description

Technical Field

[0001] This utility model relates to the field of pipeline engineering testing technology, and in particular to an airbag device for water tightness testing. Background Technology

[0002] In urban infrastructure construction, drainage pipeline systems bear the important responsibility of sewage discharge and rainwater diversion. Their engineering quality is directly related to the normal operation of the city and the sustainable development of the ecological environment. In order to ensure that drainage pipelines have good tightness after being put into use and to avoid problems such as leakage and sewage overflow, water tightness test is widely used as a key testing method in the pipeline construction and acceptance process.

[0003] In existing water tightness tests, airbags are usually used to quickly seal both ends of the drain pipe to create a closed test space, thereby enhancing the sealing performance and improving the accuracy of the test results.

[0004] However, when existing airbags are inserted into drain pipes for water tightness tests, the airbags are inserted from both ends of the drain pipe. After the airbags are inflated, they form a tight fit with the inner wall of the pipe. After the test, due to the friction of the contact surface and the negative pressure adsorption, they are often difficult to remove quickly, which prolongs the operation time. Moreover, when water is injected into the drain pipe, the impact of water flow and uneven water pressure distribution can easily cause the airbags to shift axially, destroying the original sealing state and causing leakage in the test section, thus affecting the sealing performance of the water tightness test. Utility Model Content

[0005] This invention utilizes a fixing component to provide stable positioning and rigid fixation for the airbag body, effectively preventing axial displacement under water flow impact and uneven water pressure distribution. Simultaneously, the linkage of the mechanical structure enables convenient pulling out of the airbag, facilitating quick removal after the test. This improves the efficiency of the water tightness test and ensures the sealing stability throughout the test, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an airbag device for water tightness testing, and a set of supports;

[0007] A drain pipe is fixedly installed on the top of the bracket;

[0008] The fixing components are symmetrically arranged inside the drain pipe;

[0009] The fixing assembly includes an airbag body, a fixing ring, and a hydraulic cylinder. A fixing block is fixedly installed on the outer surface of the airbag body. A slot is formed on the outer surface of the fixing block. A connecting block is slidably connected to the outer surface of the fixing block. Triangular grooves are formed on both outer surfaces of the connecting block. Triangular blocks are slidably connected to the inner walls of a set of triangular grooves. A first damper is fixedly installed on the outer surface of a set of triangular blocks. A first spring is provided on the outer surface of a set of first dampers. A positioning block is fixedly installed on the outer surface of a set of first dampers. A pull rod is fixedly connected to the outer surface of a set of positioning blocks. A positioning pin is slidably connected to the inner wall of a set of positioning blocks.

[0010] Preferably, the outer surface of a set of positioning blocks is slidably connected to the inner wall of the slot, and the outer surface of the airbag body is in contact with the inner wall of the drain pipe.

[0011] Preferably, a connecting plate is fixedly connected to the outer surface of the fixed ring, and a sealing ring is adhesively connected to the outer surface of the connecting plate.

[0012] Preferably, a movable plate is fixedly connected to the outer surface of the connecting plate near the center, the telescopic end of the hydraulic cylinder is fixedly installed to the outer surface of the movable plate, and the outer surface of the sealing ring is in contact with the inner wall of the drain pipe.

[0013] Preferably, the bottom of the bracket is provided with a shock-absorbing component;

[0014] The shock absorption assembly includes a base plate, and a second damper is fixedly installed on the top of the base plate near the four corners. A second spring is provided on the outside of each set of the second dampers.

[0015] Preferably, a tray is fixedly mounted on the top of a set of second dampers.

[0016] Preferably, the top of the tray is fixedly installed on the outer surface of the hydraulic cylinder, and the bottom of a set of brackets is fixedly connected to the top of the tray.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0018] 1. In this utility model, the fixing component can form a stable limit and rigid fixation on the airbag body, effectively avoiding its axial displacement under the impact of water flow and uneven water pressure distribution. At the same time, the linkage of the mechanical structure enables the airbag to be pulled out conveniently, making it easy to remove quickly after the test, thereby improving the work efficiency of the water tightness test and ensuring the sealing stability throughout the test.

[0019] 2. In this utility model, the vibration damping component can reduce the positional displacement of the pipeline caused by continuous vibration, and at the same time reduce the indirect impact of vibration on the sealing state of the airbag body, thereby improving the overall stability of the pipeline system during the water tightness test. Attached Figure Description

[0020] Figure 1 This utility model provides a structural schematic diagram of an airbag device for a water tightness test;

[0021] Figure 2 This utility model provides a schematic diagram of the structure of a partial fixing component of an airbag device for a water tightness test;

[0022] Figure 3 This utility model provides an enlarged view of the structure of some fixing components of an airbag device for a water tightness test;

[0023] Figure 4 This utility model provides a schematic diagram of another fixing component of an airbag device for a water tightness test;

[0024] Figure 5 This utility model provides a schematic diagram of the shock absorption component structure of an airbag device for a water tightness test;

[0025] Figure 6 This utility model provides a structural cross-sectional view of an airbag device for a water tightness test.

[0026] Legend: 1. Bracket; 2. Drain pipe; 3. Fixing component; 301. Airbag body; 302. Fixing block; 303. Slot; 304. Connecting block; 305. Triangular groove; 306. Triangular block; 307. First damper; 308. First spring; 309. Positioning block; 310. Pull rod; 311. Positioning pin; 312. Fixing ring; 313. Connecting plate; 314. Sealing ring; 315. Moving plate; 316. Hydraulic cylinder; 4. Shock absorption component; 401. Base plate; 402. Second damper; 403. Second spring; 404. Tray. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0029] Example 1: Refer to Figure 1 - Figure 6 As shown: an airbag device for a water tightness test, comprising a set of support brackets 1;

[0030] Drain pipe 2 is fixedly installed on the top of bracket 1;

[0031] Fixing components 3 are symmetrically arranged inside the drain pipe 2;

[0032] The fixing component 3 includes an airbag body 301, a fixing ring 312, and a hydraulic cylinder 316. A fixing block 302 is fixedly installed on the outer surface of the airbag body 301. A slot 303 is formed on the outer surface of the fixing block 302. A connecting block 304 is slidably connected to the outer surface of the fixing block 302. Triangular grooves 305 are formed on both outer surfaces of the connecting block 304. Triangular blocks 306 are slidably connected to the inner walls of a set of triangular grooves 305. A first damper 307 is fixedly installed on the outer surface of a set of triangular blocks 306. A first spring 308 is provided on the outer surface of a set of first dampers 307. A positioning block 309 is fixedly installed on the outer surface of a set of first dampers 307. A set of positioning blocks 309 are all fixedly connected to the outer surface of the pull rod 310, and a set of positioning blocks 309 are all slidably connected to the inner surface of the inner surface of the slot 303. The outer surface of the airbag body 301 is in contact with the inner surface of the drain pipe 2. A connecting plate 313 is fixedly connected to the outer surface of the fixing ring 312. A sealing ring 314 is adhesively connected to the outer surface of the connecting plate 313. A moving plate 315 is fixedly connected to the outer surface of the connecting plate 313 near the center. The telescopic end of the hydraulic cylinder 316 is fixedly installed to the outer surface of the moving plate 315. The outer surface of the sealing ring 314 is in contact with the inner surface of the drain pipe 2.

[0033] In this embodiment, firstly, the airbag body 301 inside the drain pipe 2 is inflated with sufficient gas to give it initial expansion and support capabilities. At this time, the hydraulic cylinder 316 is activated, and the retraction of its telescopic end drives the moving plate 315 to move. During the displacement process, the moving plate 315 will simultaneously push the connecting block 304 into the fixed block 302. As the connecting block 304 gradually slides into the fixed block 302, it will continuously compress the triangular block 306 installed on the inner side of the fixed block 302. The first spring 308 and the first damper 307 connected to the rear end of the triangular block 306 will undergo elastic deformation under the compressive force. When the connecting block 304 slides to the designated position, the triangular block 306 will be affected by the restoring force of the first spring 308 and the buffering effect of the first damper 307. The connecting block 304 is stably inserted into the pre-set slot 303 on the surface of the connecting block 304. Simultaneously, the positioning block 309 is fixed by inserting the positioning pin 311, thus forming a double limit, effectively preventing the triangular block 306 from accidentally slipping out of the slot 303 due to external impact or vibration. This ensures the initial connection stability between the connecting block 304 and the fixing block 302. When the connecting block 304 is completely slid into the fixing block 302, the pre-set triangular groove 305 at its end will precisely align with the triangular block 306. At the moment of alignment, the triangular block 306 will be completely embedded in the triangular groove 305. The self-locking characteristic of the triangular structure further strengthens the fixing effect on the connecting block 304, making the airbag body 301 and the fixing component 3 form a stable whole. This is achieved by... The fixing further enhances structural stability and improves overall impact resistance, effectively resisting the impact force generated when water is injected. Next, clean water is poured in through the inlet pre-reserved above the drain pipe 2. As the water gradually fills the internal space of the drain pipe 2 and contacts the airbag body, the locking mechanism of the hydraulic cylinder 316 is activated to maintain its current extension / retraction state. At this time, the fixed ring 312 and the moving plate 315 connected to the hydraulic cylinder 316 form a support and fixation at the central axis of the airbag body 301. This symmetrically distributed fixing structure effectively counteracts the lateral force and axial thrust generated by the water flow impact. Simultaneously, the elastic sealing ring 314 embedded on the edge of the connecting plate 313 tightly fits against the outer surface of the airbag body 301. Through the sealing ring 314... Compression deformation fills any gaps, further enhancing the seal between the airbag body 301 and the fixed components, preventing water leakage during the test. After completing the above preparations, the tightness test can be conducted according to the standard water tightness test procedure. After the test, the hydraulic cylinder 316 is restarted, controlling its extension end to extend outward. Through mechanical transmission, the moving plate 315 moves in the opposite direction. The pulling force of the moving plate 315 is used to smoothly pull the airbag body 301 out of the drain pipe 2. Then, the positioning pin 311 is pulled out to release the fixing restriction on the positioning block 309. The pull rod 310 on the side of the device is manually pulled. The pull rod 310 drives the triangular block 306 to overcome the elastic force of the first spring 308 and completely disengage from the triangular groove 305 through the linkage mechanism.The locking state of the connecting block 304 and the fixing block 302 is released, thereby separating the airbag body 301 from the fixing component 3. Under the action of the fixing component 3, the airbag body 301 can be stably limited and rigidly fixed, effectively avoiding its axial displacement under water flow impact and uneven water pressure distribution. At the same time, the linkage of the mechanical structure enables the airbag to be easily pulled out, facilitating quick removal after the test, thus improving the work efficiency of the water tightness test and ensuring the sealing stability throughout the test.

[0034] Example 2: According to Figure 1 - Figure 6 As shown: The bottom of the bracket 1 is equipped with a shock-absorbing component 4;

[0035] The shock absorption assembly 4 includes a base plate 401. A second damper 402 is fixedly installed on the top of the base plate 401 near the four corners. A second spring 403 is provided on the outside of each set of second dampers 402. A tray 404 is fixedly installed on the top of each set of second dampers 402. The top of the tray 404 is fixedly installed on the outer surface of the hydraulic cylinder 316. The bottom of a set of brackets 1 is fixedly connected to the top of the tray 404.

[0036] In this embodiment, when water flows into the drain pipe 2, the downward flow will generate inertia. This inertial impact force will be transmitted to the inner wall of the drain pipe 2 through the water flow. At this time, the second damper 402 and the second spring 403 between the bottom tray 404 of the device and the support 1 will first generate elastic deformation and damping buffer. By absorbing part of the impact energy through deformation, the instantaneous impact force brought by the inertia of the water flow is initially alleviated. Under the action of the shock absorption component 4, the positional displacement of the pipe caused by continuous vibration can be reduced, and the indirect impact of vibration on the sealing state of the airbag body 301 can be reduced, thereby improving the overall stability of the pipeline system during the water tightness test.

[0037] Working principle: First, the airbag body 301 in the drain pipe 2 is inflated with sufficient gas. The hydraulic cylinder 316 is activated, and its telescopic end retracts, causing the moving plate 315 to move, pushing the connecting block 304 into the fixed block 302. During this process, the connecting block 304 presses against the triangular block 306, causing the first spring 308 and the first damper 307 to deform. Under the action of the restoring force, the triangular block 306 is locked into the slot 303, and the positioning pin 311 is inserted to fix the positioning block 309, forming a double limit. After the connecting block 304 is fully slid in, the triangular groove 305 aligns and engages with the triangular block 306, strengthening the fixation through triangular self-locking. This makes the airbag body 301 and the fixing assembly 3 form a stable whole, enhancing impact resistance. Then, from the drain... Water is poured into the inlet above pipe 2. After contacting the airbag, the locking mechanism of hydraulic cylinder 316 is activated. The fixed ring 312 and the moving plate 315 form symmetrical support on the central axis to offset the lateral force and axial thrust of the water flow impact. The sealing ring 314 on the edge of the connecting plate 313 fits against the surface of the airbag to fill the gap and enhance the sealing performance. When the water flow impacts, the second damper 402 and the second spring 403 between the tray 404 and the bracket 1 absorb energy through elastic deformation and damping buffer to alleviate the instantaneous impact. After the test, the extension end of hydraulic cylinder 316 extends to drive the moving plate 315 to pull out the airbag, pull out the positioning pin 311, and pull the pull rod 310 to make the triangular block 306 disengage from the triangular groove 305, thereby realizing the separation of the airbag from the fixed component.

[0038] By following the instructions above, you can complete the use of the airbag device for the water tightness test.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An airbag device for a water tightness test, characterized in that: A set of supports (1); Drain pipe (2) is fixedly installed on the top of the bracket (1); The fixing component (3) is symmetrically arranged inside the drain pipe (2); The fixing component (3) includes an airbag body (301), a fixing ring (312), and a hydraulic cylinder (316). A fixing block (302) is fixedly installed on the outer surface of the airbag body (301). A slot (303) is formed on the outer surface of the fixing block (302). A connecting block (304) is slidably connected to the outer surface of the fixing block (302). Triangular grooves (305) are formed on both outer surfaces of the connecting block (304). The inner walls of a set of triangular grooves (305) are slidably connected. A set of triangular blocks (306) are connected. A first damper (307) is fixedly installed on the outer surface of each set of triangular blocks (306). A first spring (308) is provided on the outer surface of each set of first dampers (307). A positioning block (309) is fixedly installed on the outer surface of each set of first dampers (307). A pull rod (310) is fixedly connected to the outer surface of each set of positioning blocks (309). A positioning pin (311) is slidably connected to the inner wall of each set of positioning blocks (309).

2. The airbag device for water tightness testing according to claim 1, characterized in that: The outer surface of a set of positioning blocks (309) is slidably connected to the inner wall of the slot (303), and the outer surface of the airbag body (301) is in contact with the inner wall of the drain pipe (2).

3. The airbag device for water tightness testing according to claim 2, characterized in that: A connecting plate (313) is fixedly connected to the outer surface of the fixed ring (312), and a sealing ring (314) is adhesively connected to the outer surface of the connecting plate (313).

4. The airbag device for water tightness testing according to claim 3, characterized in that: A movable plate (315) is fixedly connected to the outer surface of the connecting plate (313) near the center. The telescopic end of the hydraulic cylinder (316) is fixedly installed on the outer surface of the movable plate (315). The outer surface of the sealing ring (314) is in contact with the inner wall of the drain pipe (2).

5. The airbag device for water tightness testing according to claim 1, characterized in that: The bottom of the bracket (1) is provided with a shock-absorbing component (4); The shock absorption assembly (4) includes a base plate (401), and a second damper (402) is fixedly installed on the top of the base plate (401) near the four corners. A second spring (403) is provided on the outside of each set of the second dampers (402).

6. The airbag device for water tightness testing according to claim 5, characterized in that: A tray (404) is fixedly mounted on the top of a set of second dampers (402).

7. The airbag device for water tightness testing according to claim 6, characterized in that: The top of the tray (404) is fixedly installed on the outer surface of the hydraulic cylinder (316), and the bottom of a set of brackets (1) is fixedly connected to the top of the tray (404).

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