Air bag plug capable of injecting water into steel pipe

Abstract

The utility model discloses an air bag plug capable of injecting water into a steel pipe, which comprises an air bag plug and a water injection pipe hermetically penetrating through the air bag plug, and an air inlet pipe and an air outlet pipe are arranged on the air bag plug. The beneficial effects of the utility model are that water injection can be carried out after the two ends of the steel pipeline are plugged, the steel pipeline does not need to be erected, the detection of the leakproofness of the steel pipeline on a plane is realized, and the detection difficulty of the leakproofness of the steel pipeline is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering construction technical field, concretely relates to a gasbag plug that can inject water into steel pipe. BACKGROUND

[0002] When the large pipeline is under construction, the pipeline opening needs to be blocked, and then water is injected into it to observe whether the water leaks from the steel pipe, thereby detecting the tightness of the pipeline.

[0003] However, after the pipeline opening is blocked, water cannot be injected, and in the prior art, the steel pipe needs to be blocked at one end and then stood up for water injection detection. This operation is not only very troublesome, but also difficult to stand up if the steel pipe is too heavy and large in size.

[0004] Therefore, it is necessary to provide a gasbag plug that can inject water into a steel pipe, which can inject water after blocking both ends of the steel pipe, without the need to stand up the steel pipe, realizes the detection of the tightness of the steel pipe on the plane, and greatly reduces the detection difficulty of the tightness of the steel pipe. SUMMARY

[0005] The utility model aims at overcoming the prior art, providing a gasbag plug that can inject water into a steel pipe, which can inject water after blocking both ends of the steel pipe, without the need to stand up the steel pipe, realizes the detection of the tightness of the steel pipe on the plane, and greatly reduces the detection difficulty of the tightness of the steel pipe.

[0006] The utility model aims at overcoming the prior art, providing a gasbag plug that can inject water into a steel pipe, which can inject water after blocking both ends of the steel pipe, without the need to stand up the steel pipe, realizes the detection of the tightness of the steel pipe on the plane, and greatly reduces the detection difficulty of the tightness of the steel pipe.

[0007] The support assembly is fixedly sleeved on the water injection pipe and comprises a support seat and at least two oppositely arranged support rods which are slidably arranged on the side of the support seat.

[0008] The support rods are provided with support blocks matched with the inner wall of the steel pipe at the outer end of the support seat.

[0009] The first gear is rotatably arranged in the support seat, the second gears which are matched with the positions and numbers of the support rods are meshed on the side of the first gear, the second gears are rotatably connected with the inner wall of the support seat and are threadedly rotatably sleeved on the support rods, and the drive rod connected with the first gear is rotatably sleeved on the water injection pipe.

[0010] The one-way air inlet assembly is detachably connected with the air outlet pipe.

[0011] The one-way air inlet assembly comprises a body with two open ends and an internal hollow, a first air passage and a second air passage are arranged in the body, a sealing ball is arranged on the first air passage and used for sealing the first air passage, a first reset spring in a compressed state is arranged between the second air passage and the sealing ball and connected to both ends, a sealing threaded interface between the sealing ball and the air bag plug is arranged on the body, and a sealing threaded connector matched with the sealing threaded interface is arranged on the air outlet pipe.

[0012] At least one sealing plate for sealing the sealing threaded interface is slidably arranged on the inner wall of the body, the side close to the sealing threaded interface of the sealing plate is a bevel, and a second reset spring is arranged on the sealing plate.

[0013] The utility model discloses beneficial effects are: through setting up the water injection pipe of sealing gas bag plug, after the air bag plug seals the two end interfaces of steel pipe pipeline, can inject water in through the water injection pipe, need not to set up steel pipe pipeline, realizes the detection of the sealing property of steel pipe pipeline on the plane, greatly reduces the detection difficulty of steel pipe pipeline sealing property. ACCURACY

[0014] Fig. 1 It is the schematic diagram of the utility model;

[0015] Fig. 2 It is the sectional view of support assembly;

[0016] Fig. 3 It is the sectional view of one-way air inlet assembly;

[0017] In the drawing, 1, air bag plug;11, air inlet pipe;12, air outlet pipe;2, water injection pipe;3, support assembly;31, support seat;32, support rod;33, support block;34, first gear;35, second gear;36, drive rod;4, one-way air inlet assembly;41, body;42, first air passage;43, second air passage;44, sealing ball;45, first reset spring;46, sealing threaded interface;47, sealing plate;48, bevel;49, second reset spring. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be described clearly and completely in combination with examples, and obviously, the described examples are only a part of the examples of the utility model, not all the examples. Based on the examples in the utility model, all other examples obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0019] It is explained that the orientation concept of "left", "right", "up", "down", "front", "back", "inner" and "outer" in the following scheme is relative direction, which will not be listed one by one.

[0020] A gas bag plug capable of injecting water into a steel pipe, referring to Figs. 1-3 , comprising a gas bag plug 1 and a water injection pipe 2 penetrating the gas bag plug 1. A support assembly 3 is fixedly sleeved on the water injection pipe 2. The gas bag plug 1 is provided with an air inlet pipe 11 and an air outlet pipe 12. The air inlet pipe 11 is provided with a one-way air inlet assembly 4, which is in communication with the air outlet pipe 12.

[0021] The support assembly 3 comprises a support seat 31 fixedly sleeved on the water injection pipe 2. Support rods 32 are slidably penetrated on the upper and lower sides of the support seat 31. The support rods 32 are provided with support blocks 33 at the ends. A first gear 34 is rotatably arranged in the support seat 31, and the first gear 34 is rotatably sleeved on the water injection pipe 2. A driving rod 36 is rotatably sleeved on the water injection pipe 2, and the driving rod 36 is connected with the first gear 34. Second gears 35 are arranged on both sides of the first gear 34 in meshing mode. The support rods 32 are threadedly rotatably penetrated through the second gears 35. The support rods 32 are provided with the support blocks 33 at the ends.

[0022] The one-way air inlet assembly 4 comprises a body 41. The body 41 is hollow inside and open at both ends, and is connected with the air inlet pipe 11. The body 41 is provided with a first air passage 42 and a second air passage 43. A sealing ball 44 for sealing the first air passage 42 is movably arranged on the first air passage 42. A first reset spring 42 in a compressed state is arranged between the sealing ball 44 and the second air passage 43. A sealing threaded interface 46 is formed on the body 41. A sealing threaded connector head matched with the sealing threaded interface 46 is arranged in communication at the end of the air outlet pipe 12. Two sealing plates 47 for sealing the sealing threaded interface 46 are slidably arranged on the inner wall of the body 41. The upper sides of the two sealing plates 47 are inclined surfaces 48. The sealing plates 47 are provided with second reset springs 49.

[0023] When injecting gas, the air outlet pipe 12 is in communication with the one-way air inlet assembly 4, and the sealing threaded connector head pushes the sealing plates open. When deflating is needed, the air outlet pipe 12 is separated from the one-way air inlet assembly 4, and the sealing plates 47 are reset to seal the sealing threaded interface 46.

[0024] The above only describes the preferred embodiments of the present application, and it should be understood that the present application is not limited to the forms disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concepts described herein by the above description or related technical or knowledge. Any modification and change made by the person skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the claims attached hereto.

Claims

1. A bladder closure for water injection into a steel pipe, characterized in that The air bag plug and the water injection pipe penetrating the air bag plug are included.

2. A water-inflatable bladder closure for a steel pipe according to claim 1, wherein: The support assembly is fixed on the water injection pipe and includes a support base and at least two support rods slidingly penetrating the support base.

3. A water-inflatable bladder closure for a steel pipe according to claim 2, wherein: The support rods are provided with support blocks matching the inner wall of the steel pipe.

4. The water- injectable bladder closure of claim 2, wherein: The first gear is rotatably arranged in the support base and is engaged with the second gears corresponding to the positions and numbers of the support rods.

5. The water- injectable bladder plug of claim 1, wherein: The one-way air inlet assembly is detachably connected with the air outlet pipe.

6. A water injectable bladder closure for a steel pipe according to claim 5, wherein: The one-way air inlet assembly includes a hollow body with two open ends, a first air passage and a second air passage.

7. A water injectable bladder closure for a steel pipe according to claim 6, wherein: The first air passage is provided with a sealing ball for sealing the first air passage. The second air passage is provided with a first return spring in a compressed state and connected with the sealing ball. The body is provided with a sealing threaded interface between the sealing ball and the air bag plug. The air outlet pipe is provided with a sealing threaded connector matching the sealing threaded interface. The inner wall of the body is slidingly provided with at least one sealing plate for sealing the sealing threaded interface. The side of the sealing plate close to the sealing threaded interface is a slope. The sealing plate is provided with a second return spring.

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