A pipeline plugging device for town gas engineering

Abstract

This utility model relates to a pipeline sealing device for urban gas engineering, including a sealing pipe head and a rubber sealing plug. The outer wall of the sealing pipe head is provided with an external pipe section and a handrail. The external pipe section is located on one side of the handrail, and a rubber sleeve is provided on the outer surface of its front end. A gas sensor is provided on the outer wall of the external pipe section. An annular airbag is fixedly installed on the inner wall of the external pipe section, and an inflation nozzle is fixedly installed on the outer wall of the annular airbag. A buffer seat is provided at the front end of the rubber sealing plug, and an inner rubber tube is fixedly installed on the inner wall of the sealing pipe head. A front plate is provided at the front end of the buffer seat. In this utility model, the sealing pipe head can seal gas pipelines of different inner diameters with the rubber sealing plug, improving the adaptability of the sealing device. The buffer seat can buffer the gas pressure, preventing the rubber sealing plug from loosening due to pressure. Furthermore, the gas sensor can detect the sealing performance under pressure, preventing gas leakage and potential hazards.

Description

Technical Field

[0001] This utility model relates to the field of urban gas engineering technology, and in particular to a pipeline sealing device for urban gas engineering. Background Technology

[0002] Urban gas engineering is an engineering technology system that provides combustible gas that meets national quality standards through a transmission and distribution system to meet the needs of urban residents, businesses and industrial production. Its core contents include gas supply system, transmission and distribution technology, indoor installation specifications and safety management system.

[0003] Pipeline sealing devices are specialized technical equipment used in the maintenance, renovation, emergency repair or expansion of urban gas pipeline systems to temporarily or in stages block the flow of gas medium and isolate specific pipe sections in order to achieve "pressurized operation" or "safe gas shutdown operation", avoid safety accidents caused by gas leaks, and ensure the continuity of gas supply for people's livelihood and industry. However, existing sealing devices have certain inconveniences in use.

[0004] In gas pipeline sealing operations, existing sealing devices typically require custom-made sealing plates of proportional size based on the pipeline's inner diameter to achieve a seal. However, this design has significant limitations: poor adaptability, only able to match a single pipe inner diameter, making it difficult to flexibly meet the sealing needs of gas pipelines with different diameters. Each time the pipe diameter is changed, a new sealing plate must be customized or replaced, increasing operating costs and extending the construction period. Secondly, in pressurized operation scenarios, the impact pressure generated by the instantaneous flow of gas medium inside the pipeline directly acts on the surface of the sealing element. This instantaneous impact force can easily cause deformation, displacement, or even breakage of the sealing element. Poor sealing between the seal and the inner wall of the pipe can lead to micro-leaks in the gas, weakening the overall sealing effect and posing a safety hazard to operations. In addition, existing sealing devices lack real-time leak detection capabilities when operating under pressure, making it impossible to dynamically monitor the sealing performance of the sealing area. This makes it difficult to detect gas leaks caused by seal failure in the first instance. Once the seals are aged, damaged, or not properly fitted, the leaked gas may accumulate in the work area, and workers may not be able to detect and deal with it in time. This not only increases the safety risks of explosions and fires but also makes the overall safety of the device relatively low.

[0005] Therefore, we propose a pipeline sealing device for urban gas engineering. Utility Model Content

[0006] In existing technologies, sealing devices typically use sealing plates proportional to the inner diameter of the pipeline for sealing. However, this method has low adaptability and is not suitable for gas pipelines with different inner diameters. Furthermore, when pressurized operations are required, the instantaneous pressure of gas flow can impact the sealing components, easily affecting their sealing performance. Moreover, existing sealing devices cannot detect leaks during pressurized operations, posing significant safety concerns. This utility model provides a pipeline sealing device for urban gas engineering.

[0007] The technical solution adopted by this utility model is: a pipeline sealing device for urban gas engineering, including a sealing pipe head and a rubber sealing plug. The outer wall of the sealing pipe head is provided with an external pipe section and a handrail. The external pipe section is located on one side of the handrail. The outer surface of the front end of the external pipe section is provided with a rubber sleeve. A gas sensor is provided on the outer wall of the external pipe section. An annular airbag is fixedly installed on the inner wall of the external pipe section. An inflation nozzle is fixedly installed on the outer wall of the annular airbag. A buffer seat is provided at the front end of the rubber sealing plug. An inner rubber tube is fixedly installed on the inner wall of the sealing pipe head. A front plate is provided at the front end of the buffer seat. A connecting rod is fixedly installed on the outer surface of the rear end of the front plate. An internal groove is provided in the middle of the buffer seat. A damping end plate is provided on the outer surface of one end of the connecting rod. A spring is provided in the middle of the internal groove.

[0008] Furthermore, the sealing pipe heads are all welded to the external pipe section and the handrail.

[0009] Furthermore, a sensing probe is provided on the lower outer surface of the gas sensor, and the sensing probe extends through to the middle of the external pipe section.

[0010] Furthermore, the outer surface of the rear end of the rubber sealing plug is fixedly connected to the inner surface of one end of the sealing tube head, and the rubber sealing plug has a conical structure.

[0011] Furthermore, the rubber sealing plug and the buffer seat are integrally formed, and the connecting rod is threadedly connected to the front plate.

[0012] Furthermore, the connecting rod and the damping end plate are integrally formed, and one end of the outer surface of the damping end plate is fixedly connected to one end of the outer surface of the spring.

[0013] The beneficial effects of this utility model are:

[0014] In this invention, the sealing pipe head allows the rubber sealing plug to be inserted into the gas pipeline. Because the rubber sealing plug has a conical structure, it easily adapts to gas pipelines of different inner diameters. During pressurized operation, the gas pressure first contacts the front plate, which then moves backward under pressure, causing the connecting rod to move within the internal groove. This allows the connecting rod to compress the spring via the damping end plate, buffering the pressure and reducing the direct force on the rubber sealing plug, thus ensuring its sealing performance. Furthermore, during use, the gas sensor can detect the condition inside the external pipe section via its sensing probe. When a leak occurs in the gas pipeline seal, gas enters the external pipe section. The sensing probe detects the gas and transmits this information to the gas sensor, which then issues an alarm. This design provides high safety during pressurized operation. Additionally, the external pipe section prevents direct contact between the gas and air in the event of a leak, offering a degree of protection. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the present invention;

[0016] Figure 2 This is a diagram of the internal structure of the sealing pipe head of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the buffer seat of this utility model;

[0018] Figure 4 This is a structural diagram of the rubber sealing plug of this utility model.

[0019] The markings in the diagram are: 1. Sealing pipe head; 2. External pipe section; 3. Rubber sleeve; 4. Handrail; 5. Gas sensor; 6. Rubber sealing plug; 7. Buffer seat; 8. Inner rubber tube; 9. Annular airbag; 10. Inflation nozzle; 11. Front plate; 12. Connecting rod; 13. Internal groove; 14. Damping end plate; 15. Spring. Detailed Implementation

[0020] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The following is in conjunction with the appendix Figures 1-4 The present invention will be further described below.

[0023] In order to solve the problems existing in the background technology, this application proposes the following technical solution: a pipeline sealing device for urban gas engineering.

[0024] The specific technical solution includes a sealing pipe head 1 and a rubber sealing plug 6. The outer wall of the sealing pipe head 1 is provided with an external pipe section 2 and a handrail 4. The external pipe section 2 is located on one side of the handrail 4. A rubber sleeve 3 is provided on the outer surface of the front end of the external pipe section 2. A gas sensor 5 is provided on the outer wall of the external pipe section 2. An annular airbag 9 is fixedly installed on the inner wall of the external pipe section 2. An inflation nozzle 10 is fixedly installed on the outer wall of the annular airbag 9. A buffer seat 7 is provided at the front end of the rubber sealing plug 6. An inner rubber tube 8 is fixedly installed on the inner wall of the sealing pipe head 1. A front plate 11 is provided at the front end of the buffer seat 7. A connecting rod 12 is fixedly installed on the outer surface of the rear end of the front plate 11. An internal groove 13 is provided in the middle of the buffer seat 7. A damping end plate 14 is provided on the outer surface of one end of the connecting rod 12. A spring 15 is provided in the middle of the internal groove 13. When using the sealing pipe head 1, the rubber sealing plug 6 can be inserted into the gas pipeline. Because the rubber sealing plug 6 is... The conical structure allows for easy adaptation to gas pipelines of different inner diameters during use. During pressurized operations, the gas pressure first contacts the front plate 11, causing it to move backward and move the connecting rod 12 within the internal groove 13. This allows the connecting rod 12 to compress the spring 15 via the damping end plate 14, buffering the pressure and reducing the direct force on the rubber sealing plug 6, thus ensuring its sealing performance. Furthermore, the gas sensor 5 can detect the condition inside the external pipe section 2 via its sensing probe. When a gas pipeline leaks, gas enters the external pipe section 2. The sensing probe detects the gas and transmits this information to the gas sensor 5, which then issues an alarm. This design provides high safety during pressurized operations. Additionally, the external pipe section 2 prevents direct contact between the gas and air in the event of a leak, offering a degree of protection.

[0025] Furthermore, the sealing pipe head 1 is welded to the external pipe section 2 and the handrail 4. The external pipe section 2 can prevent the gas from coming into direct contact with the air in the event of a leak, thus providing a certain degree of protection.

[0026] Furthermore, a sensing probe is provided on the lower outer surface of the gas sensor 5, and the sensing probe extends through to the middle of the external pipe section 2. When in use, the gas sensor 5 can detect gas through the sensing probe. When gas leaks, the sensing probe can transmit the leak information to the gas sensor 5, and the gas sensor 5 will trigger an alarm.

[0027] Furthermore, the outer surface of the rear end of the rubber sealing plug 6 is fixedly connected to the inner surface of one end of the sealing pipe head 1. The rubber sealing plug 6 has a conical structure. When in use, the rubber sealing plug 6 can adapt to gas pipelines with different inner diameters through its own conical structure, which can improve the adaptability of the sealing device, make it more convenient to use, avoid material waste, and avoid increasing the cost of use.

[0028] Furthermore, the rubber sealing plug 6 and the buffer seat 7 are integrally formed structures, and the connecting rod 12 is threadedly connected to the front plate 11. When in use, the buffer seat 7 can buffer the gas pressure through the front plate 11, which can reduce the direct force of the pressure on the rubber sealing plug 6.

[0029] Furthermore, the connecting rod 12 and the damping end plate 14 are integrally formed. One end of the outer surface of the damping end plate 14 is fixedly connected to one end of the outer surface of the spring 15. The spring 15 and the damping end plate 14 are mainly used to buffer the pressure during use.

[0030] To ensure that those skilled in the art can fully understand the technical solution, this application provides the following overall overview:

[0031] In use, the rubber sleeve 3 can be folded back and outward, and then the sealing pipe head 1 can be connected to the gas pipeline that needs to be sealed. At this time, the rubber sealing plug 6 inside the sealing pipe head 1 is inserted into the gas pipeline. Since the rubber sealing plug 6 has a conical structure, it is easy to adapt to gas pipelines with different inner diameters during use. At this time, the annular air bag 9 can be inflated through the air inlet 10, so that the annular air bag 9 expands and covers the gas pipeline, thereby forming a seal and stability on the external pipe section 2. Then, the rubber sleeve 3 can be folded back forward, at which point the rubber sleeve 3 wraps around the gas pipeline, which can form a seal again. When performing pressurized operations, the gas pressure will first contact the front plate 11. After being pressurized, the front plate 11 will move backward and carry... The moving connecting rod 12 moves within the built-in groove 13, causing the connecting rod 12 to compress the spring 15 via the damping end plate 14. This spring 15 buffers the pressure, thereby reducing the direct force on the rubber sealing plug 6 and ensuring its sealing performance. In addition, during use, the gas sensor 5 can detect the situation inside the external pipe section 2 through the sensing probe. When a gas pipeline leak occurs, gas will enter the external pipe section 2. At this time, the sensing probe detects the gas and transmits it to the gas sensor 5, which then issues an alarm. This provides high safety during pressurized operation. Furthermore, the external pipe section 2 can prevent the gas from directly contacting the air in the event of a leak, thus providing a certain degree of protection.

[0032] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A pipeline sealing device for urban gas engineering, characterized in that, The device includes a sealing pipe head (1) and a rubber sealing plug (6). The outer wall of the sealing pipe head (1) is provided with an external pipe section (2) and a handrail (4). The external pipe section (2) is located on one side of the handrail (4). A rubber sleeve (3) is provided on the outer surface of the front end of the external pipe section (2). A gas sensor (5) is provided on the outer wall of the external pipe section (2). An annular airbag (9) is fixedly installed on the inner wall of the external pipe section (2). An inflation nozzle (10) is fixedly installed on the outer wall of the annular airbag (9). The front end of the rubber sealing plug (6) is provided with a buffer seat (7), the inner wall of the sealing tube head (1) is fixedly installed with an inner rubber tube (8), the front end of the buffer seat (7) is provided with a front plate (11), the outer surface of the rear end of the front plate (11) is fixedly installed with a connecting rod (12), the middle part of the buffer seat (7) is provided with an internal groove (13), the outer surface of one end of the connecting rod (12) is provided with a damping end plate (14), and the middle part of the internal groove (13) is provided with a spring (15).

2. The pipeline sealing device for urban gas engineering according to claim 1, characterized in that, The sealing pipe head (1) is welded to the external pipe section (2) and the handrail (4).

3. The pipeline sealing device for urban gas engineering according to claim 1, characterized in that, A sensing probe is provided on the lower outer surface of the gas sensor (5), and the sensing probe extends through to the middle of the external pipe section (2).

4. A pipeline sealing device for urban gas engineering according to claim 1, characterized in that, The outer surface of the rear end of the rubber sealing plug (6) is fixedly connected to the inner surface of one end of the sealing tube head (1), and the rubber sealing plug (6) has a conical structure.

5. A pipeline sealing device for urban gas engineering according to claim 1, characterized in that, The rubber sealing plug (6) and the buffer seat (7) are integrally formed, and the connecting rod (12) is threadedly connected to the front plate (11).

6. A pipeline sealing device for urban gas engineering according to claim 1, characterized in that, The connecting rod (12) and the damping end plate (14) are integrally formed, and one end of the outer surface of the damping end plate (14) is fixedly connected to one end of the outer surface of the spring (15).

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