A high-pressure natural gas pipeline sealing and connecting device

Abstract

The application discloses a high-pressure natural gas pipeline sealing and connecting device, which comprises two groups of symmetrical pieces, the symmetrical pieces are composed of outer rings and inner rings, the outer rings and the inner rings are in sliding connection, and are both arc-shaped pieces, the inner ends of the outer rings are both in sliding connection with the inner rings, the inner cutting surfaces of the outer rings and the inner rings are in contact, and adjusting mechanisms are arranged between the two inner rings and contain adjusting barrels, adjusting rods and air bags; through the arc-shaped sliding design of the outer rings and the inner rings, the change of the sizes of multiple pipelines is realized, the quick installation of the two groups of symmetrical pieces is realized, the traditional rotating condition is avoided, the fitting mechanism is added to solve the gap difference problem of the two sealing pieces after installation, the sealing performance is enhanced, through the design of the air bags, the buffering space is provided under thermal expansion and cold contraction or stamping, the problem of insufficient compensation capacity is avoided, the installation is simple, the fitting is tightly closed, and the problem of the harm caused by the outflow of natural gas due to the gap difference is avoided.

Description

Technical Field

[0001] This invention relates to the field of natural gas equipment technology, specifically to a high-pressure natural gas pipeline sealing connection device. Background Technology

[0002] High-pressure natural gas pipelines operate at high pressures. Traditional threaded and flanged connections are prone to loosening and leakage after long-term exposure to medium pressure. They also require high installation precision and are insufficient in compensating for pipeline stress caused by geological subsidence and temperature changes, posing safety hazards to gas transmission. Traditional sealing connections involve welding components and adding sealing rings, which are then welded onto rotating sleeves. This is cumbersome to install and requires matching rings of the appropriate size to the corresponding pipe, resulting in low efficiency. Therefore, a sealing connection device is needed that can be installed quickly, rapidly adjusted to pipe size, and resist thermal expansion and contraction. Summary of the Invention

[0003] The purpose of this invention is to provide a high-pressure natural gas pipeline sealing connection device to solve the problems mentioned in the background art.

[0004] By adopting the above technical solution, a rapid sealing connection for natural gas pipelines is achieved, and the enhanced sealing effect can be adaptively adjusted.

[0005] Compared with the prior art, the beneficial effects of the present invention are: the arc-shaped sliding design of the outer ring and the inner ring enables the change of multiple pipe sizes, and the design of two sets of symmetrical parts enables rapid installation, avoiding the traditional rotation situation. The addition of a fitting mechanism solves the problem of gap difference between the two seals after installation, enhancing the sealing performance. The airbag design provides a buffer space under thermal expansion and contraction or stamping, avoiding the problem of insufficient compensation capacity. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the main cross-sectional structure of the present invention; Figure 2 This is a schematic diagram of the main cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the bonding mechanism in this invention; Figure 4 This is a schematic diagram of the adjustment mechanism in this invention.

[0007] In the diagram: 1. Symmetrical component; 101. Outer ring; 102. Inner ring; 2. Adjustment mechanism; 201. Adjustment cylinder; 202. Adjustment rod; 203. Airbag; 3. Connecting mechanism; 301. Bolt; 302. Mating component; 4. First sealing component; 5. Second sealing component; 6. Fitting mechanism; 601. Threaded cylinder; 602. Threaded rod; 603. Connecting rod; 7. Sealing block. Detailed Implementation

[0008] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0009] Please see Figure 1-4 This invention provides a technical solution: a high-pressure natural gas pipeline sealing connection device, comprising: two sets of symmetrical components 1, each symmetrical component 1 consisting of an outer ring 101 and an inner ring 102, the outer ring 101 and the inner ring 102 being slidably connected and both being arc-shaped components, with the inner ring 102 slidably connected to both ends of the inner ring 101, the inner tangential surfaces of the outer ring 101 and the inner ring 102 being in contact, and an adjustment mechanism 2 provided between the two inner rings 102, the adjustment mechanism 2 including an adjustment cylinder 201, an adjustment rod 202 and an air bladder 203; the inner surface of the outer ring 101 is fixedly connected to... The device includes an adjusting cylinder 201, with adjusting rods 202 slidably connected to both ends of the cylinder. Inner rings 102 are fixedly connected to the opposite ends of the two adjusting rods 202. An air bladder 203 is located inside each adjusting rod, with both ends of the air bladder 203 fixedly connected to the opposite ends of the adjusting rods 202. The pipe diameter is adjusted via the outer ring 101 and the inner ring 102. The symmetrical component 1 facilitates quick and easy installation and fixation. The expansion and contraction of the air bladder 203 causes the adjusting rods 202 to slide, thereby moving the inner ring 102 and adjusting the pipe diameter. The outer sides of the two symmetrical parts 1 are provided with a connecting mechanism 3. The connecting mechanism 3 includes a bolt 301 and a mating part 302. The outer side of the outer ring 101 is fixedly connected to the mating part 302. The mating parts 302 are rotatably connected to each other by the bolt 301. The two symmetrical parts 1 can be fixed and closed by the bolt 301 and the mating part 302, and can adapt to fit and contact with the pipeline.

[0010] The outer ring 101 has a U-shaped structure. A first sealing element 4 is fixedly connected to both sides of the inner surface of the outer ring 101. A second sealing element 5 is fixedly connected to the inner surface of the inner ring 102. A fitting mechanism 6 is provided on both sides of the outer ring 101. The fitting mechanism 6 includes a threaded cylinder 601, a threaded rod 602, and a connecting rod 603. The threaded cylinder 601 is rotatably connected to the outer side of the outer ring 101. Threaded rods 602 are threadedly connected to both ends of the threaded cylinder 601. A connecting rod 603 is rotatably connected to the opposite end of the threaded rod 602. The connecting rod 603 is connected to the outer ring 101. 01 Rotary connection; The bottom end of the connecting rod 603 is rotatably connected to a sealing block 7. The opposite end of the sealing block 7 is in contact with the first sealing element 4. By rotating the threaded cylinder 601, the two threaded rods 602 rotate in opposite directions and move back to back, thereby driving the connecting rod 603 to rotate. Since the connecting rod 603 is rotatably connected to the outer ring 101, the sealing block 7 below moves relative to each other, squeezing the first sealing element 4, thereby making it fit and contact with the second sealing element 5. Both are made of silicone material and have softness, thereby reducing the sealing and avoiding leakage problems.

Claims

1. A high-pressure natural gas pipeline sealing connection device, characterized in that: include: Two sets of symmetrical components (1) are provided. Each symmetrical component (1) consists of an outer ring (101) and an inner ring (102). The outer ring (101) and the inner ring (102) are slidably connected and are both arc-shaped components. The inner ring (102) is slidably connected to both ends of the inner ring (101). The inner tangent surfaces of the outer ring (101) and the inner ring (102) are in contact. An adjustment mechanism (2) is provided between the two inner rings (102). The adjustment mechanism (2) includes an adjustment cylinder (201), an adjustment rod (202), and an airbag (203).

2. The high-pressure natural gas pipeline sealing connection device according to claim 1, characterized in that: An adjusting cylinder (201) is fixedly connected inside the outer ring (101). An adjusting rod (202) is slidably connected to both ends of the adjusting cylinder (201). An inner ring (102) is fixedly connected to the opposite ends of the two adjusting rods (202). An air bladder (203) is provided inside the adjusting rod (202). The two ends of the air bladder (203) are fixedly connected to the opposite ends of the adjusting rod (202).

3. The high-pressure natural gas pipeline sealing connection device according to claim 1, characterized in that: A connecting mechanism (3) is provided on the outer side of the two symmetrical parts (1). The connecting mechanism (3) includes a bolt (301) and a mating part (302). The mating part (302) is fixedly connected to the outer side of the outer ring (101), and the bolt (301) is rotatably connected between the mating parts (302).

4. The high-pressure natural gas pipeline sealing connection device according to claim 1, characterized in that: The outer ring (101) has a U-shaped structure. The inner surface of the outer ring (101) is fixedly connected to the two sides of the first sealing element (4). The inner surface of the inner ring (102) is fixedly connected to the second sealing element (5). The outer ring (101) is provided with a fitting mechanism (6) on both sides. The fitting mechanism (6) includes a threaded cylinder (601), a threaded rod (602) and a connecting rod (603). The outer side of the outer ring (101) is rotatably connected to the threaded cylinder (601). The two ends of the threaded cylinder (601) are threadedly connected to the threaded rod (602). The opposite ends of the threaded rod (602) are rotatably connected to the connecting rod (603). The connecting rod (603) is rotatably connected to the outer ring (101).

5. A high-pressure natural gas pipeline sealing connection device according to claim 4, characterized in that: The bottom end of the connecting rod (603) is rotatably connected to a sealing block (7), and the opposite end of the sealing block (7) is in contact with the first sealing element (4).

6. A high-pressure natural gas pipeline sealing connection device according to claim 4, characterized in that: Both the first seal (4) and the second seal (5) are made of silicone.

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