Pipeline airtightness detection equipment

Abstract

The utility model discloses pipeline airtightness detection equipment, and relates to the technical field of pipelines. In order to solve the problem that chronic air leakage at the joint of adjacent pipelines is not easy to detect, the key points of the technical scheme are as follows: the device comprises a detection ring, the detection ring is detachably connected to the peripheral wall of the joint of the adjacent pipelines, and a first sealing cavity is formed between the detection ring and the peripheral wall of the pipeline; a second sealing cavity communicated with the first sealing cavity is formed in the detection ring, a plurality of detection strips are slidably connected into the second sealing cavity, and when the volume of gas in the first sealing cavity is larger than the volume of the first sealing cavity, the detection strips slide along the inner wall of the second sealing cavity; according to the utility model, the detection strip slides to detect whether the joint of the pipeline has chronic air leakage, and if the air leakage occurs, a corresponding mark is made to prompt a maintainer to find and maintain the air leakage as soon as possible, so that the waste of resources in the pipeline is reduced, and the air tightness and the safety performance of the pipeline are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, and more specifically, to a pipeline air tightness detection device. Background Art

[0002] Common municipal pipelines in people's lives include: water pipes, drainage pipes, gas pipes, and heat pipes. Municipal pipelines are an important part of urban engineering, providing public products and services to residents for a fee or free of charge.

[0003] A pipeline system usually connects several pipelines together to transport resources. After gas pipelines have been installed and used for a long time, the pipeline joints are more likely to become unstable, resulting in poor airtightness between adjacent pipelines. Traditional pipeline airtightness detection equipment does not have the function of long-term detection of pipelines after installation. When chronic air leakage occurs at the pipeline joints, it is not easy for maintenance personnel to discover and repair it, resulting in waste of resources in the pipeline and posing certain safety hazards to people. Therefore, it is necessary to propose a new structure to solve the problem of chronic air leakage at the connection of adjacent pipelines that is not easy to detect. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a pipeline airtightness detection device, which can detect whether there is a chronic air leak at the connection between adjacent pipelines through a structural setting.

[0005] The above technical purpose of the utility model is achieved through the following technical scheme: it includes a detection ring, which is detachably connected to the outer peripheral wall of the adjacent pipeline connection, a sealed cavity 1 is arranged between the detection ring and the outer peripheral wall of the pipeline, a sealed cavity 2 connected to the sealed cavity 1 is opened in the detection ring, and a plurality of detection strips are slidably connected in the sealed cavity 2. When the volume of gas in the sealed cavity 1 is greater than its own volume, the detection strips slide along the inner wall of the sealed cavity 2.

[0006] The utility model is further configured as follows: a ventilation groove connected with the sealing chamber 2 is provided on the inner peripheral wall of the sealing chamber 1, and the distance between the ventilation groove and the pipeline is smaller than the distance between the ventilation groove and the adjacent pipeline.

[0007] The utility model is further configured as follows: a plurality of sealing grooves communicating with the second sealing cavity are provided at one end of the detection ring close to the adjacent pipeline, and the detection strip is slidably connected in the second sealing cavity between the ventilation groove and the sealing groove.

[0008] The utility model is further configured as follows: one end of the detection strip close to the adjacent pipeline is fixedly connected to a sealing strip detachably connected to the sealing groove, and one end of the sealing strip close to the adjacent pipeline is fixedly connected to a prompt plate.

[0009] The utility model is further configured as follows: the prompt plate has elastic deformation performance, and a limiting ring for limiting the deformation of the prompt plate is slidably connected to the outer peripheral wall of the prompt plate.

[0010] The utility model is further configured as follows: the width of the limiting ring is greater than the width of the sealing groove, the length of the sealing strip is greater than the depth of the sealing groove, and the width of the detection strip is equal to the width of the second sealing cavity.

[0011] The utility model is further configured as follows: a plurality of annular strips are fixedly connected to one end of the detection ring close to the pipeline, and the symmetry axes of adjacent annular strips are perpendicularly arranged to the central axis of the detection ring.

[0012] In summary, the utility model has the following beneficial effects: by setting a detection ring to detect the air tightness of the connection between adjacent pipelines, if there is an air leakage between the pipelines, the gas is collected to drive the detection strip to slide, so as to remind people that there is a sealing problem at the pipeline connection. When the detection strip slides, the sealing strip is driven to slide into the sealing groove to seal it, and the reminder plate is driven to come out to remind people to repair it in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 for Figure 2 A magnified view of part A;

[0016] Figure 4 for Figure 3 Enlarged view of part B.

[0017] In the figure: 1. detection ring; 2. sealing chamber 1; 3. sealing chamber 2; 4. detection strip; 5. ventilation groove; 6. sealing groove; 7. sealing strip; 8. prompt plate; 9. restriction ring; 10. annular strip. DETAILED DESCRIPTION

[0018] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] A pipeline air tightness detection device, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, it includes a detection ring 1, which is connected to the outer peripheral wall of the adjacent pipe connection by bolts, a sealing cavity 2 is arranged between the detection ring 1 and the outer peripheral wall of the pipe, and a sealing cavity 2 3 connected with the sealing cavity 2 is opened in the detection ring 1. When a gas leak occurs at the connection of the adjacent pipes, the gas in the pipe will be transmitted from the connection of the pipe to the sealing cavity 2. As the volume of the gas in the sealing cavity 2 gradually increases, the gas in the sealing cavity 2 enters the sealing cavity 2 3. Two detection strips 4 are slidably connected in the sealing cavity 2 3, and the detection strips 4 are made of rubber. Material, rubber has a good sealing effect on gas, making it less likely for gas to leak into the sealing cavity 2, thereby making the thrust exerted by the gas on the detection strip 4 more stable. As the volume of gas entering the sealing cavity 2 3 gradually increases, the gas exerts a thrust on the detection strip 4 in the direction close to the sealing groove 6, causing the detection strip 4 to slide in the sealing cavity 2 3 along the thrust direction. The detection ring 1 is made of transparent acrylic material, which makes it more convenient for maintenance personnel to observe the position of the detection strip 4 from the outside to determine whether there is a leak at the pipeline connection.

[0020] like Figure 3 and Figure 4 As shown, a ventilation groove 5 is provided on the inner peripheral wall of the sealed cavity 1 2, which is connected to the sealed cavity 2 3. The distance between the ventilation groove 5 and the pipeline is smaller than the distance between the ventilation groove 5 and the adjacent pipeline, so that when the volume of the gas in the sealed cavity 1 2 gradually increases, the gas is concentratedly transported to the sealed cavity 2 3 through the ventilation groove 5, which makes it more convenient to apply a thrust to one side of the detection strip 4 to make it slide. A sealing groove 6 connected to the outside world is provided on the inner wall of the sealed cavity 2 3 close to the adjacent pipeline. The sealing groove 6 can make the end of the sealed cavity 2 3 away from the ventilation groove 5 and the outside atmosphere The pressure is kept balanced. When the gas pressure at one end of the sealing chamber 2 3 close to the ventilation groove 5 increases, the gas generates a thrust on the detection strip 4 away from the ventilation groove 5. A sealing strip 7 for blocking the sealing groove 6 is bonded to the end of the detection strip 4 close to the adjacent pipeline. When the detection strip 4 slides to abut against the inner wall of the sealing chamber 2 3 close to the adjacent pipeline end, the sealing strip 7 passes through the sealing groove 6. The inner wall of the sealing groove 6 squeezes the sealing strip 7, causing the sealing strip 7 itself to deform, thereby achieving the purpose of blocking the sealing groove 6 and reducing the leakage of resources in the pipeline.

[0021] like Figure 3 and Figure 4As shown, a prompt plate 8 is bonded to one end of the sealing strip 7 close to the adjacent pipe. The prompt plate 8 is made of highly elastic rubber material, so that the prompt plate 8 has good elastic deformation performance. A limiting ring 9 for limiting the deformation of the prompt plate 8 is slidably connected to the outer peripheral wall of the prompt plate 8. In the initial state, the prompt plate 8 is compressed to a minimum volume under the action of the limiting ring 9, so that the cross-sectional area of ​​the prompt plate 8 is equal to the cross-sectional area of ​​the sealing groove 6. When gas leakage occurs between the pipes, the gas transmitted between the pipes will first accumulate in the sealing cavity 2. When the gas in the sealing cavity 2 accumulates to a certain volume, the gas will flow out from The sealing chamber 1 2 transmits the thrust to the sealing chamber 2 3 and applies a thrust to the detection strip 4 in the direction close to the sealing groove 6, so that the detection strip 4 slides in the sealing chamber 2 3 along the thrust direction, and the detection strip 4 drives the prompt plate 8 to slide to penetrate from the sealing groove 6, so that the inner wall of the sealing chamber 2 3 applies a thrust to the restriction ring 9 in the direction close to the sealing strip 7. When the restriction ring 9 slides to abut against the side wall of the detection strip 4, the restriction of the restriction ring 9 on the prompt plate 8 disappears, and the prompt plate 8 recovers and becomes larger under its own elastic deformation performance. As the detection strip 4 continues to slide, the sealing strip 7 penetrates into the sealing groove 6 to block it, thereby reducing the volume of gas leakage in the pipeline.

[0022] like Figure 3 and Figure 4 As shown, the width of the limiting ring 9 is greater than the width of the sealing groove 6, so that when the detection strip 4 drives the compressed prompt plate 8 to pass through the sealing groove 6, the limiting ring 9 slides along the outer peripheral wall of the prompt plate 8 toward the direction close to the sealing strip 7. When the compressed prompt plate 8 passes through the sealing groove 6 completely, the limiting ring 9 slides to abut against the surface of the sealing strip 7, and the restriction of the limiting ring 9 on the prompt plate 8 disappears. The prompt plate 8 stretches and becomes larger under its own elastic deformation performance. By coating the surface of the prompt plate 8 with brightly colored paint, people can see it from a farther distance. It was observed that there was a gas leakage at the pipe connection here, which was convenient for relevant maintenance personnel to carry out maintenance work. The width of the detection strip 4 is equal to the width of the sealing cavity 23, so that the sealing performance of the sealing cavity 23 formed by the detection strip 4 is better. Two annular strips 10 are bonded to the end of the detection ring 1 close to the pipe, and the symmetry axes of adjacent annular strips 10 are perpendicular to the central axis of the detection ring 1, so that a sealing cavity 2 is formed between the detection ring 1 and the adjacent annular strips 10. The annular strips 10 are made of rubber material, which can make the sealing performance in the sealing cavity 2 better.

[0023] Working principle: In the initial state, the distance between the ventilation groove 5 and the pipeline is smaller than the distance between the ventilation groove 5 and the adjacent pipeline. The prompt plate 8 is compressed to the minimum volume under the action of the limiting ring 9, so that the cross-sectional area of ​​the prompt plate 8 is equal to the cross-sectional area of ​​the sealing groove 6. When gas leakage occurs at the pipeline connection, the gas transmitted between the pipelines accumulates in the sealing cavity 1 2. When the gas in the sealing cavity 1 2 accumulates to a certain volume, the gas is transmitted from the sealing cavity 1 2 to the sealing cavity 2 3 to apply a thrust to the detection strip 4 in the direction close to the sealing groove 6, so that the detection strip 4 moves along the thrust direction. The force direction slides in the sealing chamber 2 3. When the detection strip 4 drives the prompt plate 8 in the compression to slide and penetrate into the sealing groove 6, the opening of the sealing groove 6 applies a thrust to the limiting ring 9 in the direction close to the sealing strip 7. When the limiting ring 9 slides to abut against the outer peripheral wall of the sealing strip 7, the restriction imposed by the limiting ring 9 on the prompt plate 8 disappears, and the prompt plate 8 recovers and becomes larger under its own elastic deformation performance to prompt the maintenance personnel to repair the connection of the pipeline. As the detection strip 4 continues to slide, the sealing strip 7 penetrates into the sealing groove 6 to seal it, thereby reducing the volume of gas leakage in the pipeline.

[0024] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A pipeline air tightness detection device, comprising a detection ring (1), characterized in that: The detection ring (1) is detachably connected to the outer peripheral wall of the adjacent pipe connection, a sealed cavity (2) is formed between the detection ring (1) and the outer peripheral wall of the pipe, a sealed cavity (3) is provided in the detection ring (1) and is connected to the sealed cavity (2), a plurality of detection strips (4) are slidably connected in the sealed cavity (3), and when the volume of gas in the sealed cavity (2) is greater than its own volume, the detection strips (4) slide along the inner wall of the sealed cavity (3).

2. A pipeline air tightness detection device according to claim 1, characterized in that: A ventilation groove (5) communicating with the sealing cavity (3) is provided on the inner peripheral wall of the sealing cavity one (2), and the distance between the ventilation groove (5) and the pipeline is smaller than the distance between the ventilation groove (5) and the adjacent pipeline.

3. A pipeline air tightness detection device according to claim 2, characterized in that: The detection ring (1) is provided with a plurality of sealing grooves (6) communicating with the second sealing cavity (3) at one end close to the adjacent pipeline, and the detection strip (4) is slidably connected in the second sealing cavity (3) between the ventilation groove (5) and the sealing groove (6).

4. A pipeline air tightness detection device according to claim 3, characterized in that: The end of the detection strip (4) close to the adjacent pipe is fixedly connected to a sealing strip (7) detachably connected to the sealing groove (6), and the end of the sealing strip (7) close to the adjacent pipe is fixedly connected to a prompt plate (8).

5. A pipeline air tightness detection device according to claim 4, characterized in that: The prompt plate (8) has elastic deformation performance, and a limiting ring (9) for limiting the deformation of the prompt plate (8) is slidably connected to the outer peripheral wall of the prompt plate (8).

6. A pipeline air tightness detection device according to claim 5, characterized in that: The width of the limiting ring (9) is greater than the width of the sealing groove (6), the length of the sealing strip (7) is greater than the depth of the sealing groove (6), and the width of the detection strip (4) is equal to the width of the second sealing cavity (3).

7. The pipeline air tightness detection device according to claim 1, characterized in that: A plurality of annular strips (10) are fixedly connected to one end of the detection ring (1) close to the pipeline, and the symmetry axes of adjacent annular strips (10) are arranged perpendicular to the central axis of the detection ring (1).

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