Pipeline explosion-proof sealing device

Abstract

The utility model relates to the technical field of pipeline safety equipment, in particular to a pipeline anti-explosion sealing device. Comprising a pipeline, a sealing body, an elastic sealing assembly, an anti-explosion net, an anti-explosion steel belt, a first connecting plate, a second connecting plate, a limiting block, a through groove, a sliding groove and the like. According to the utility model, the explosion resistance of the device can be improved, so that the device can be kept stable under extreme working conditions, and the harm of explosion to personnel and equipment is reduced to the greatest extent.

Description

Technical Field

[0001] This utility model relates to the field of pipeline safety equipment technology, specifically a pipeline explosion-proof sealing device. Background Technology

[0002] In the petroleum, chemical, and natural gas industries, pipelines serve as crucial carriers for transporting various flammable, explosive, toxic, and hazardous media, making their sealing and explosion-proof performance paramount.

[0003] Traditional pipeline sealing devices are mostly simple rubber ring seals. Under complex working conditions such as high temperature, high pressure, and strong corrosion, the rubber rings are prone to aging and deformation, leading to seal failure, media leakage, and potentially serious safety accidents such as explosions. Utility Model Content

[0004] The present invention aims to provide a pipeline explosion-proof sealing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An explosion-proof sealing device for pipelines includes a pipeline, a sealing body threadedly connected to the pipeline, an elastic sealing component connected to the sealing body, the elastic sealing component cooperating with the pipeline, an explosion-proof mesh connected to the sealing body, and an explosion-proof steel strip detachably connected to the sealing body. The explosion-proof steel strip is multi-layered and consists of two sets, each set connected to a connecting plate one and a connecting plate two. The connecting plate one is connected to a limit block, and the connecting plate two has a through groove. The limit block cooperates with the through groove. The limit block has a sliding groove, and a buckle is slidably connected to the side wall of the sliding groove. A telescopic rod is connected to the side wall of the sliding groove, with its telescopic end connected to the buckle. A spring is sleeved on the telescopic rod, with both ends of the spring connected to the buckle and the side wall of the sliding groove, respectively. The buckle cooperates with the connecting plate one.

[0007] Preferably, the first connecting plate and the second connecting plate are threaded together with a bolt, and the bolt is threadedly connected with a nut.

[0008] Preferably, the elastic sealing assembly includes a polytetrafluoroethylene sealing ring, a nitrile rubber sealing ring, and a polyurethane foam sealing ring.

[0009] Preferably, the sealing body has a sealing groove, and a sealing ring is connected to the side wall of the sealing groove.

[0010] Preferably, the explosion-proof steel strip is coated with an anti-corrosion coating, which is an epoxy resin coating.

[0011] Preferably, the sealing body is made of high-strength alloy steel.

[0012] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0013] This solution employs a multi-layered explosion-proof steel strip and mesh. The multi-layered steel strip, with its layered structure, evenly distributes impact force, preventing excessive stress at a single point and thus avoiding structural failure. Compared to a single-layer steel strip, the multi-layered steel strip reduces local stress on the sealing body by 40%-60%, effectively limiting the expansion and deformation of the sealing body when internal pressure abnormally increases, preventing rupture, and thus blocking the outward spread of the explosion shock wave, providing reliable explosion protection for the pipeline system. In the event of an explosion, the explosion-proof mesh enhances the overall structural strength of the device, preventing displacement or damage to the elastic sealing components under high-pressure impact, maintaining the integrity of the sealing structure. Simultaneously, the explosion-proof mesh and multi-layered explosion-proof steel strip work together to form a three-dimensional explosion-proof system, further enhancing the device's ability to withstand explosions, ensuring stability even under extreme conditions, and minimizing the harm to personnel and equipment. The threaded connection between the sealing body and the pipeline facilitates convenient and quick installation and disassembly, requiring no special tools or complex operations.

[0014] Two sets of explosion-proof steel strips are connected by connecting plate one and connecting plate two, and with the help of limiting blocks, through slots, and buckles, a tight and stable connection between the steel strips is achieved. The cooperation of the limiting blocks and through slots completes the initial positioning of the steel strips, ensuring accurate positioning during installation; the buckles, under the action of the telescopic rod and spring, firmly hold connecting plate one, preventing the steel strips from loosening; and the bolts and nuts further tighten connecting plate one and connecting plate two, making the multi-layer explosion-proof steel strips form a solid whole. Even under the severe vibration and impact of an explosion, the connection points of the steel strips will not shift or separate, maintaining good explosion-proof performance and ensuring the long-term stable operation of the explosion-proof function.

[0015] By incorporating elastic sealing components, the PTFE sealing ring is heat-resistant and corrosion-resistant, resisting the erosion of special media within the pipeline; the nitrile rubber sealing ring has good elasticity and can tightly conform to the pipeline surface; the polyurethane foam sealing ring provides buffering and auxiliary sealing. These three components work together to form a multi-layered sealing structure, significantly improving the sealing effect. Simultaneously, the sealing groove in the sealing body, in conjunction with the sealing ring, further enhances the sealing performance at the connection between the sealing body and the pipeline, effectively preventing media leakage.

[0016] By applying an epoxy resin anti-corrosion coating, the corrosion of the pipeline transport medium and the external environment can be effectively resisted, extending the service life of the explosion-proof steel strip and ensuring that the explosion-proof reinforcement function remains stable and reliable during long-term use, reducing safety hazards caused by steel strip corrosion.

[0017] By using high-strength alloy steel for the sealing body, which has high tensile strength and high yield strength, it can maintain good structural stability under harsh working conditions such as high pressure and high impact, providing reliable support for internal sealing components and explosion-proof components, and ensuring the safe operation of the entire device. Attached Figure Description

[0018] Figure 1 This is a front sectional view of the present invention;

[0019] Figure 2 This is a front cross-sectional view of the connecting plate of this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point A;

[0021] Attached reference numerals: 1. Pipeline; 2. Sealing body; 3. Explosion-proof mesh; 4. Explosion-proof steel strip; 5. PTFE sealing ring; 6. Nitrile rubber sealing ring; 7. Polyurethane foam sealing ring; 8. Sealing groove; 9. Elastic sealing assembly; 10. Bolt; 11. Connecting plate two; 12. Connecting plate one; 13. Nut; 14. Limiting block; 15. Through groove; 16. Telescopic rod; 17. Spring; 18. Slide groove; 19. Buckle; 20. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0023] like Figure 1-3The illustrated explosion-proof sealing device for pipelines includes two pipes 1, which are threaded together to form a sealing body 2. The sealing body 2 is cylindrical, with an internal thread on its inner wall that matches the external thread of the pipes 1, achieving a tight connection between the sealing body 2 and the two pipes 1. An elastic sealing component 10 is connected to the inner wall of the sealing body 2, cooperating with the pipes 1. An explosion-proof mesh 3 is also connected to the inner wall of the sealing body 2 to enhance the internal structural strength of the device. An explosion-proof steel strip 4 is detachably connected to the outer wall of the sealing body 2. Two sets of explosion-proof steel strips 4 are provided, each set consisting of multiple layers. When an explosion occurs inside the pipe 1, the multiple layers of explosion-proof steel strips 4 can disperse the impact force generated by the explosion, effectively limiting the expansion and deformation of the sealing body 2. Working in conjunction with the internal explosion-proof mesh 3, they prevent the propagation of the explosion shock wave and reduce the explosion hazard. Two sets of explosion-proof steel strips 4 are connected to connecting plate 13 and connecting plate 22 at their ends respectively. Each connecting plate 13 has a limit block 15 connected to both ends of its top. Each connecting plate 22 has a through groove 16 at both ends. Each limit block 15 cooperates with the corresponding through groove 16. Each limit block 15 has a sliding groove 19 at both ends. Each sliding groove 19 has a buckle 20 slidably connected to its side wall. The buckle 20 has a chamfer at its top. Each sliding groove 19 has a telescopic rod 17 connected to its side wall. The telescopic end of each telescopic rod 17 is connected to the corresponding buckle 20. Each telescopic rod 17 is fitted with a spring 18. Each spring 18 has both ends connected to the corresponding buckle 20 and the side wall of the sliding groove 19 respectively. Each buckle 20 cooperates with the corresponding connecting plate 13. During installation, the limiting block 15 passes through the through groove 16. At this time, the buckle 20 automatically retracts into the slide groove 19 under the action of the chamfer, so that the limiting block 15 can pass through the through groove 16. After completion, the buckle 20 pops out under the action of the spring 18 and cooperates with the connecting plate 13 to initially fix the explosion-proof steel strip 4.

[0024] like Figure 2 As shown, each set of connecting plates 13 and 12 is connected by two bolts 11, and each bolt 11 is threaded with a nut 14. The explosion-proof steel strip 4 is further tightened to ensure that it is tightly and securely connected under extreme conditions such as explosion impact, and will not loosen.

[0025] like Figure 1As shown, the elastic sealing assembly 10 includes, from the inside out, a high-temperature and corrosion-resistant polytetrafluoroethylene (PTFE) sealing ring 5, a highly elastic nitrile rubber (NBR) sealing ring 6, and a cushioning polyurethane foam sealing ring 7. These multiple sealing rings fit tightly together, forming a multi-layered sealing structure. Sealing grooves 8 are respectively provided at both ends of the sealing body 2, and sealing rings 9 are connected to the side walls of the two sealing grooves 8, further enhancing the sealing performance at the connection between the sealing body 2 and the pipeline 1 and preventing media leakage from the connection point. The explosion-proof steel strip 4 is coated with an anti-corrosion coating, which is an epoxy resin coating, improving its corrosion resistance and extending its service life. The sealing body 2 is made of high-strength alloy steel.

[0026] The specific implementation process is as follows:

[0027] During use, select the appropriate device based on the pipe diameter, material, and medium characteristics of the two pipes 1. Check that all components are intact. After cleaning, apply sealant to the inner threads of the sealing body 2 and apply anti-rust oil to the connection parts of the explosion-proof steel strip 4. Then, install the sealing ring 9 in the sealing groove 8 and screw the sealing body 2 onto the two pipes 1, ensuring that the sealing ring 9 is evenly compressed. The limiting block 15 passes through the through groove 16 of the connecting plate 22 by the beveled corner of the buckle 20. The spring 18 causes the buckle 20 to pop out and initially fix the connecting plate, and then tighten it with bolts 11 and nuts 14.

[0028] When maintenance is required, the valves can be closed to drain the medium from the pipeline before disassembly. The wear and damage of each component can then be inspected, and replacements or repairs can be made as needed.

[0029] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pipeline explosion-proof sealing device, characterized in that: The system includes a pipe (1), which is threadedly connected to a sealing body (2). The sealing body (2) is connected to an elastic sealing component (10), which cooperates with the pipe (1). The sealing body (2) is connected to an explosion-proof mesh (3). The sealing body (2) is detachably connected to an explosion-proof steel strip (4). The explosion-proof steel strip (4) is multi-layered and has two sets. The two sets of explosion-proof steel strips (4) are respectively connected to a connecting plate one (13) and a connecting plate two (12). The connecting plate one (13) is connected to a limit block (15). The connecting plate 2 (12) has a through groove (16), the limiting block (15) cooperates with the through groove (16), the limiting block (15) has a sliding groove (19), the side wall of the sliding groove (19) is slidably connected with a buckle (20), the side wall of the sliding groove (19) is connected with a telescopic rod (17), the telescopic end of the telescopic rod (17) is connected to the buckle (20), the telescopic rod (17) is sleeved with a spring (18), the two ends of the spring (18) are respectively connected to the buckle (20) and the side wall of the sliding groove (19), and the buckle (20) cooperates with the connecting plate 1 (13).

2. The pipeline explosion-proof sealing device as described in claim 1, characterized in that: The connecting plate one (13) and the connecting plate two (12) are threaded together with a bolt (11), and the bolt (11) is threaded with a nut (14).

3. The pipeline explosion-proof sealing device as described in claim 1, characterized in that: The elastic sealing assembly (10) includes a polytetrafluoroethylene sealing ring (5), a nitrile rubber sealing ring (6), and a polyurethane foam sealing ring (7).

4. The pipeline explosion-proof sealing device as described in claim 1, characterized in that: The sealing body (2) has a sealing groove (8), and a sealing ring (9) is connected to the side wall of the sealing groove (8).

5. The pipeline explosion-proof sealing device as described in claim 1, characterized in that: The explosion-proof steel strip (4) is coated with an anti-corrosion coating, which is an epoxy resin coating.

6. The pipeline explosion-proof sealing device as described in claim 1, characterized in that: The sealing body (2) is made of high-strength alloy steel.

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