CN222297319U - Pipeline plug for air tightness detection - Google Patents
Pipeline plug for air tightness detection Download PDFInfo
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- CN222297319U CN222297319U CN202421129024.2U CN202421129024U CN222297319U CN 222297319 U CN222297319 U CN 222297319U CN 202421129024 U CN202421129024 U CN 202421129024U CN 222297319 U CN222297319 U CN 222297319U
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- inner sleeve
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Abstract
本实用新型公开了一种气密性检测用管道堵头，用于封堵管道，气密性检测用管道堵头包括环形外套、端壁和环形内套，端壁密封连接于环形外套的轴向的一端，环形外套环绕于环形内套的外周侧，环形内套的远离端壁的一端密封连接于环形外套，环形内套与环形外套之间形成有增压腔，其中，在环形内套套设于管道的外侧，且朝管道内充气时，气体能进入增压腔内而挤压环形内套，以使环形内套贴紧管道的外侧壁。本实用新型的气密性检测用管道堵头，不仅能够避免堵头被气体冲开，保证管道端部的密封性，而且安装和拆卸堵头操作方便，省时省力。
The utility model discloses a pipe plug for air tightness detection, which is used for plugging a pipe. The pipe plug for air tightness detection includes an annular outer sleeve, an end wall and an annular inner sleeve. The end wall is sealed and connected to one axial end of the annular outer sleeve. The annular outer sleeve surrounds the outer peripheral side of the annular inner sleeve. One end of the annular inner sleeve away from the end wall is sealed and connected to the annular outer sleeve. A pressurization chamber is formed between the annular inner sleeve and the annular outer sleeve. When the annular inner sleeve is arranged on the outer side of the pipe and inflated into the pipe, the gas can enter the pressurization chamber and squeeze the annular inner sleeve so that the annular inner sleeve is close to the outer wall of the pipe. The pipe plug for air tightness detection of the utility model can not only prevent the plug from being blown open by gas and ensure the sealing of the end of the pipe, but also facilitate the installation and removal of the plug, saving time and effort.
Description
Technical Field
The utility model relates to the technical field of air tightness detection, in particular to a pipeline plug for air tightness detection.
Background
When the air tightness of the equipment is detected, for example, the welding seam of the pipeline of the equipment is detected, the end part of the pipeline needs to be plugged by a plug, so that the problem that the detection effect is reduced due to the fact that gas directly flows out of the end part of the pipeline is avoided. The existing plug is generally directly inserted into the end part of the pipeline, but if the plug is not tightly inserted, the plug is easily flushed by gas, the tightness is difficult to ensure, and if the plug is too tightly inserted, the plug is difficult to take down subsequently, the operation is tedious, and the time and the labor are wasted.
Disclosure of utility model
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the pipeline plug for detecting the air tightness, which not only can prevent the plug from being flushed by gas and ensure the tightness of the end part of the pipeline, but also is convenient to install and detach, and saves time and labor.
According to the pipeline plug for detecting the air tightness, which is disclosed by the embodiment of the utility model, the pipeline plug for detecting the air tightness is used for plugging a pipeline and comprises an annular outer sleeve, an end wall and an annular inner sleeve, wherein the end wall is connected with one end of the annular outer sleeve in the axial direction in a sealing manner, the annular outer sleeve surrounds the outer peripheral side of the annular inner sleeve, one end of the annular inner sleeve, which is far away from the end wall, is connected with the annular outer sleeve in a sealing manner, a pressurizing cavity is formed between the annular inner sleeve and the annular outer sleeve, and when the annular inner sleeve is sleeved on the outer side of the pipeline and is inflated towards the inner side of the pipeline, gas can enter the pressurizing cavity to squeeze the annular inner sleeve so that the annular inner sleeve is tightly attached to the outer side wall of the pipeline.
The pipeline plug for detecting the air tightness has at least the following beneficial effects:
When the air tightness detection is needed to be carried out on the equipment, the annular inner sleeve of the plug is sleeved on the outer side of the end part of the pipeline, the equipment is inflated, the pipeline is inflated indirectly, the air pressure in the pipeline is gradually increased, part of air in the pipeline can be extruded into a pressurizing cavity between the annular inner sleeve and the annular outer sleeve, the air pressure in the pressurizing cavity is increased, the annular inner sleeve can be extruded to generate elastic deformation, the annular inner sleeve can be tightly attached to the outer side wall of the pipeline, the friction force between the pipeline and the annular inner sleeve is greatly increased, the plug is further ensured not to be flushed out by the air, after the detection is finished, the equipment is deflated, the air in the pressurizing cavity is exhausted, so that the tight attachment between the annular inner sleeve and the outer side wall of the pipeline can be relieved, and the plug can be conveniently detached. According to the pipeline plug for detecting the air tightness, disclosed by the embodiment of the utility model, the plug can be prevented from being flushed by air, so that the tightness of the end part of the pipeline is ensured, and the operation is convenient, time-saving and labor-saving when the plug is installed and detached.
According to some embodiments of the utility model, the pressurizing chamber is provided in a ring shape and surrounds an outer circumferential side of the annular inner sleeve.
According to some embodiments of the utility model, a centerline of the plenum chamber and a centerline of the annular inner sleeve coincide.
According to some embodiments of the utility model, a side wall of the pressurizing chamber adjacent to the annular inner sleeve is formed with a slope, and a distance between the slope and a center line of the annular inner sleeve gradually increases in a direction adjacent to the end wall.
According to some embodiments of the utility model, the chamfer is provided in a ring shape and extends in a circumferential direction of the annular inner sleeve.
According to some embodiments of the utility model, a first gap is provided between the annular inner sleeve and the end wall, and a second gap is provided between the annular inner sleeve and the annular outer sleeve, the second gap being located on a side of the plenum chamber adjacent to the end wall, the second gap communicating the first gap with the plenum chamber.
According to some embodiments of the utility model, the first gap has a width dimension that is greater than a width dimension of the second gap.
According to some embodiments of the utility model, a first groove is formed in one side of the annular outer sleeve, which is close to the annular inner sleeve, a second groove is formed in one side of the annular inner sleeve, which is close to the annular outer sleeve, and the first groove and the second groove form the pressurizing cavity.
According to some embodiments of the utility model, the air tightness detecting pipe plug further comprises a positioning ring, wherein the positioning ring is arranged inside one end of the annular inner sleeve, which is far away from the end wall, and the center line of the positioning ring coincides with the center line of the annular inner sleeve.
According to some embodiments of the utility model, the inner diameter of the end of the annular inner sleeve distal from the end wall increases gradually in a direction distal from the end wall.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the accompanying drawings and examples, in which:
Fig. 1 is a schematic structural diagram of a pipe plug for air tightness detection according to an embodiment of the present utility model;
FIG. 2 is a schematic view of the annular inner sleeve sleeved outside the pipeline;
FIG. 3 is a schematic flow diagram of gas entering the plenum.
Reference numerals:
an annular outer sleeve 100;
an end wall 200;
An annular inner sleeve 300;
Plenum 400, ramp 401, first recess 402, second recess 403;
A first gap 500;
A second gap 600;
a retaining ring 700;
a conduit 800.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
When the air tightness detection is carried out on the equipment, for example, when the air tightness detection is carried out on a welding line between an oil tank and a pipeline, the end part of the pipeline is required to be plugged by a plug, so that the influence on the detection result caused by the fact that the gas filled in the equipment directly flows out from the end part of the pipeline when the air tightness detection is carried out on the air inflation is avoided.
In the prior art, the plug is generally directly inserted into the end part of the pipeline, but if the plug is not tightly inserted, the plug is easily flushed by gas, the tightness is difficult to ensure, and if the plug is too tightly inserted, the plug is difficult to take down subsequently, so that the operation is complex, and time and labor are wasted. In addition, some plugs are connected with the pipeline through threads, but in the mode, the end of the pipeline needs to be provided with internal threads, so that the application range is small, and the practicability is poor.
A pipe plug for airtightness detection according to an embodiment of the present utility model is described below with reference to fig. 1 to 3.
Referring to fig. 1 to 3, a pipe plug for airtightness detection according to an embodiment of the present utility model is used to block a pipe 800, and includes an annular outer jacket 100, an end wall 200, and an annular inner jacket 300.
The annular sleeve 100 may be annular, the end wall 200 is sealingly connected to one axial end of the annular sleeve 100, specifically, the end wall 200 may be integrally formed with the annular sleeve 100, and the end wall 200 may also be welded or bonded to one axial end of the annular sleeve 100, so that sealing between the end wall 200 and the annular sleeve 100 can be achieved, and leakage of gas from between the end wall 200 and the annular sleeve 100 is avoided.
The annular outer sleeve 100 surrounds the outer circumference of the annular inner sleeve 300, the annular inner sleeve 300 may be annular, the annular outer sleeve 100 and the annular inner sleeve 300 may be coaxially arranged, one end of the annular inner sleeve 300 far away from the end wall 200 is connected with the annular outer sleeve 100 in a sealing manner, specifically, one end of the annular inner sleeve 300 far away from the end wall 200 and one end of the annular outer sleeve 100 far away from the end wall 200 may be integrally formed, or one end of the annular inner sleeve 300 far away from the end wall 200 and one end of the annular outer sleeve 100 far away from the end wall 200 are welded or bonded, and a pressurizing cavity 400 is formed between the annular inner sleeve 300 and the annular outer sleeve 100. The annular inner sleeve 300 is used for sleeving the pipe 800, for example, the annular inner sleeve 300 may be made of elastic rubber, elastic plastic or other materials capable of generating elastic deformation, and in a natural state, the inner diameter of the annular inner sleeve 300 may be approximately equal to the outer diameter of the pipe 800, and the annular inner sleeve 300 is matched and sleeved on the outer side of the pipe 800.
When the annular inner sleeve 300 is sleeved outside the pipeline 800 and is inflated towards the inside of the pipeline 800, gas can enter the pressurizing cavity 400 to squeeze the annular inner sleeve 300, so that the annular inner sleeve 300 is elastically deformed to be tightly attached to the outer side wall of the pipeline 800.
In this embodiment, when the air tightness of the device needs to be detected, the annular inner sleeve 300 of the plug is sleeved on the outer side of the end portion of the pipe 800, the device is inflated, and then the pipe 800 is inflated indirectly, the air pressure in the pipe 800 is gradually increased, part of air in the pipe 800 can be extruded into the pressurizing cavity 400 between the annular inner sleeve 300 and the annular outer sleeve 100, the air pressure in the pressurizing cavity 400 is increased, the air in the pressurizing cavity 400 can further extrude the annular inner sleeve 300, the annular inner sleeve 300 is extruded to generate elastic deformation, and can be tightly attached to the outer side wall of the pipe 800, so that the friction force between the pipe 800 and the annular inner sleeve 300 is greatly increased to ensure that the plug is not flushed by the air, after the detection is completed, the device is deflated, and the air in the pressurizing cavity 400 is discharged, so that the tight attachment between the annular inner sleeve 300 and the outer side wall of the pipe 800 can be relieved, and then the plug can be conveniently detached.
According to the pipeline plug for detecting the air tightness, disclosed by the embodiment of the utility model, the plug can be prevented from being flushed by gas, the tightness of the end part of the pipeline 800 is ensured, the operation is convenient, time and labor are saved when the plug is installed and disassembled, the pipeline 800 does not need to be provided with internal threads, the application range of the plug is wide, and the practicability is better.
In some embodiments of the present utility model, as shown in fig. 1 to 3, the pressurizing chamber 400 is provided in a ring shape and surrounds the outer circumferential side of the annular inner sleeve 300. By the arrangement, when the gas in the pipeline 800 enters the pressurizing cavity 400, all the positions of the annular inner sleeve 300 in the circumferential direction can be extruded, and then all the positions of the annular inner sleeve 300 in the circumferential direction can be tightly attached to the outer side wall of the pipeline 800, so that the sealing performance of the end part of the pipeline 800 is better.
In some embodiments of the present utility model, as shown in fig. 1-3, the centerline of the plenum 400 and the centerline of the annular inner sleeve 300 coincide. So set up, when the gas in the pipeline 800 enters into the pressure boost chamber 400, not only can extrude annular endotheca 300 in each position of circumference, the extrusion force of applying to annular endotheca 300 is more even moreover, and then makes annular endotheca 300 elastic deformation more even to with pipeline 800 lateral wall laminating effect better, the sealed effect is better.
It should be noted that in other embodiments of the present utility model, the centerline of the plenum 400 and the centerline of the annular inner sleeve 300 may be slightly offset.
In some embodiments of the present utility model, as shown in fig. 1 to 3, a sidewall of the pressurizing chamber 400 adjacent to the annular inner sleeve 300 is formed with a slope 401, and a distance between the slope 401 and a center line of the annular inner sleeve 300 increases gradually in a direction approaching the end wall 200. For example, it may be that the side of the pressurizing chamber 400 near the side wall of the annular inner sleeve 300 and near the end wall 200 forms a slope 401, and the closer to the end wall 200, the greater the distance between the slope 401 and the center line of the annular inner sleeve 300. In this embodiment, when the gas in the pipe 800 enters the pressurizing cavity 400, part of the gas will squeeze the inclined plane 401, and the inclined plane 401 is provided, so that the stress area can be increased, the extrusion force applied to the annular inner sleeve 300 is further increased, and the elastic deformation effect of the annular inner sleeve 300 is better, so that the annular inner sleeve 300 is more tightly attached to the outer side wall of the pipe 800, and the sealing effect is better.
In some embodiments of the present utility model, as shown in fig. 1 to 3, the inclined surface 401 is provided in a ring shape and extends in the circumferential direction of the annular inner sleeve 300. In this embodiment, by means of such arrangement, the stress area can be increased at each position in the circumferential direction of the annular inner sleeve 300, so that the extrusion force applied to the annular inner sleeve 300 is larger, and the elastic deformation effect at each position in the circumferential direction of the annular inner sleeve 300 is better, so that the annular inner sleeve 300 is more tightly attached to the outer side wall of the pipeline 800, and the sealing effect is better.
In some embodiments of the present utility model, as shown in fig. 1 to 3, there is a first gap 500 between the annular inner sleeve 300 and the end wall 200, and a second gap 600 between the annular inner sleeve 300 and the annular outer sleeve 100, the second gap 600 being located on a side of the plenum chamber 400 near the end wall 200, the second gap 600 communicating the first gap 500 with the plenum chamber 400. In this embodiment, a first gap 500 is formed between the annular inner sleeve 300 and the end wall 200, and a second gap 600 is formed between the annular inner sleeve 300 and the annular outer sleeve 100, so that the gas in the pipe 800 can enter the pressurizing chamber 400 more conveniently.
In some embodiments of the present utility model, as shown in fig. 1-3, the width dimension of the first gap 500 is greater than the width dimension of the second gap 600. In this embodiment, the width dimension of the first gap 500 is set to be larger, so that the gas in the pipeline 800 can enter the pressurizing cavity 400 more conveniently, the width dimension of the second gap 600 is set to be smaller, the gas in the pressurizing cavity 400 can be reduced to flow back into the pipeline 800, the gas pressure in the pressurizing cavity 400 can be kept higher, the extrusion effect of the annular inner sleeve 300 is better, and therefore the annular inner sleeve 300 is attached to the outer side wall of the pipeline 800 more tightly, and the sealing effect is better.
In some embodiments of the present utility model, as shown in fig. 1 to 3, a first groove 402 is formed on a side of the annular outer sleeve 100 adjacent to the annular inner sleeve 300, a second groove 403 is formed on a side of the annular inner sleeve 300 adjacent to the annular outer sleeve 100, and the first groove 402 and the second groove 403 form a pressurizing chamber 400. In this embodiment, a first groove 402 and a second groove 403 are respectively disposed on the side of the annular outer sleeve 100 and the annular inner sleeve 300, and the first groove 402 and the second groove 403 form a pressurizing chamber 400. By the arrangement, the volume of the pressurizing cavity 400 is ensured, the extrusion effect of the annular inner sleeve 300 is ensured, and meanwhile, the reduction of the structural strength caused by the fact that the groove body is only arranged on the annular outer sleeve 100 or the annular inner sleeve 300 can be avoided, so that the damage of the pipeline plug for detecting the air tightness can be reduced, and the service life is longer.
In some embodiments of the present utility model, as shown in fig. 1 to 3, the pipe plug for airtightness detection further includes a positioning ring 700, the positioning ring 700 being provided inside the end of the annular inner sleeve 300 remote from the end wall 200, and a center line of the positioning ring 700 being coincident with a center line of the annular inner sleeve 300. The positioning ring 700 can be made of hard materials such as stainless steel, and after the positioning ring 700 is used for a long time, the problem that the pipe 800 is difficult to insert due to deformation of one end of the annular inner sleeve 300, which is far away from the end wall 200, due to various reasons can be avoided, and the practicability is better. In addition, the position where the annular inner sleeve 300 is connected to the annular outer sleeve 100 can be structurally reinforced, so that damage caused by stress concentration at the position where the annular inner sleeve 300 is connected to the annular outer sleeve 100 can be avoided.
In some embodiments of the present utility model, as shown in fig. 1-3, the inner diameter of the end of the annular inner sleeve 300 distal from the end wall 200 increases gradually in a direction distal from the end wall 200. That is, the inner side of the end of the annular inner sleeve 300 away from the end wall 200 is provided with a chamfer, so that the end of the pipe 800 is more conveniently inserted into the annular inner sleeve 300, and the plug is more convenient to install.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (10)
1. A pipeline plug for gas tightness detection for plugging a pipeline, comprising:
An annular outer sleeve;
an end wall sealingly connected to an axial end of the annular outer sleeve;
The annular outer sleeve surrounds the outer peripheral side of the annular inner sleeve, one end, far away from the end wall, of the annular inner sleeve is connected with the annular outer sleeve in a sealing mode, and a pressurizing cavity is formed between the annular inner sleeve and the annular outer sleeve;
when the annular inner sleeve is sleeved on the outer side of the pipeline and is inflated towards the interior of the pipeline, gas can enter the pressurizing cavity to squeeze the annular inner sleeve, so that the annular inner sleeve is tightly attached to the outer side wall of the pipeline.
2. The air tightness detecting pipe plug according to claim 1, wherein the pressurizing chamber is provided in a ring shape and surrounds an outer peripheral side of the annular inner sleeve.
3. The air tightness detecting pipe plug according to claim 2, wherein a center line of the pressurizing chamber and a center line of the annular inner sleeve coincide.
4. The air tightness detecting pipe plug according to claim 2, wherein a side wall of the pressurizing chamber adjacent to the annular inner sleeve is formed with a slope, and a distance between the slope and a center line of the annular inner sleeve is gradually increased in a direction adjacent to the end wall.
5. The air tightness detecting pipe plug according to claim 4, wherein said inclined surface is provided in a ring shape and extends in a circumferential direction of said annular inner sleeve.
6. The air tightness detection pipe plug according to any of claims 1 to 5, wherein a first gap is provided between the annular inner sleeve and the end wall, a second gap is provided between the annular inner sleeve and the annular outer sleeve, the second gap is located on a side of the pressurizing chamber close to the end wall, and the second gap communicates the first gap and the pressurizing chamber.
7. The air tightness detecting pipe plug according to claim 6, wherein a width dimension of the first gap is larger than a width dimension of the second gap.
8. The air tightness detection pipe plug according to any of claims 1 to 5, wherein a first groove is provided on a side of the annular outer sleeve close to the annular inner sleeve, a second groove is provided on a side of the annular inner sleeve close to the annular outer sleeve, and the first groove and the second groove constitute the pressurizing chamber.
9. The pipe plug for airtightness detection according to any one of claims 1 to 5, further comprising:
The positioning ring is arranged in one end, far away from the end wall, of the annular inner sleeve, and the central line of the positioning ring coincides with the central line of the annular inner sleeve.
10. The pipe plug for air tightness detection according to any one of claims 1 to 5, wherein an inner diameter of an end of the annular inner sleeve remote from the end wall gradually increases in a direction remote from the end wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421129024.2U CN222297319U (en) | 2024-05-22 | 2024-05-22 | Pipeline plug for air tightness detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421129024.2U CN222297319U (en) | 2024-05-22 | 2024-05-22 | Pipeline plug for air tightness detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222297319U true CN222297319U (en) | 2025-01-03 |
Family
ID=93969760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421129024.2U Active CN222297319U (en) | 2024-05-22 | 2024-05-22 | Pipeline plug for air tightness detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222297319U (en) |
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2024
- 2024-05-22 CN CN202421129024.2U patent/CN222297319U/en active Active
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