Rotary municipal gas pipeline leakage emergency plugging device

Abstract

The utility model relates to municipal engineering technical field discloses a kind of rotary municipal gas pipeline leakage emergency plugging devices, comprising: lower shell and upper shell;Spacing component, spacing component includes spacing sleeve, circumferential sleeve and convex rib;Pressure relief structure, pressure relief structure includes exhaust pipe, adjusting screw, sealing ring and plug body, exhaust pipe is fixedly installed with lower shell, adjusting screw is threadedly connected with exhaust pipe, sealing ring is fixedly connected with exhaust pipe, plug body is rotatably connected with adjusting screw, by rotating adjusting screw, adjusting screw pushes plug body away from the port of exhaust pipe, plug body is separated from sealing ring and forms gap, exhaust pipe extends to one sealing cavity in the most middle position of lower shell, and gas in middle sealing cavity is discharged by exhaust pipe to relieve pressure, facilitate the accurate closure of lower shell and upper shell to form sealed barrier, avoid the gas in gas pipeline leakage in sealing cavity Form high pressure to make upper shell and lower shell difficult to close.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering technology, and in particular to a rotary emergency sealing device for leaks in municipal gas pipelines. Background Technology

[0002] Gas delivery is a municipal engineering project that delivers gas to households through pipelines. However, these pipelines can break and leak over time.

[0003] A search revealed a prior art gas pipeline leak-sealing device (publication number: CN118881854A), comprising: two leak-sealing units symmetrically installed on the gas pipeline; each leak-sealing unit including a half-sleeve with an intermediate cavity and a wedge-shaped block disposed within the intermediate cavity; two symmetrically arranged rubber blocks disposed within the intermediate cavity and on both sides of the wedge-shaped block; a first guide port communicating with the intermediate cavity on the half-sleeve; a screw rod inserted into the wedge-shaped block and passing through the first guide port, the first guide port being provided with a threaded cap for threaded installation of the screw rod; the screw rod presses against the wedge-shaped block, thereby squeezing the rubber blocks to move and fit along the intermediate cavity to maintain the sealing of the intermediate cavity.

[0004] In existing technologies, sealing is mainly achieved by closing two detachable half-sleeves with a rubber block. However, when the half-sleeves are closed, gas will continuously overflow from the pipeline. The gas pressure is high and the flow rate is fast, making it very difficult to close the half-sleeves. It can also cause the half-sleeves to shift, affecting the accurate sealing of the pipeline leak. Therefore, it is necessary to depressurize before the half-sleeves are fully locked.

[0005] Therefore, we propose a rotary emergency sealing device for municipal gas pipeline leaks. Utility Model Content

[0006] This invention mainly solves the technical problem of difficulty in closing caused by the inability to release pressure before the half-sleeve is closed and locked, and provides a rotary emergency sealing device for municipal gas pipeline leaks.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a rotary municipal gas pipeline leak emergency sealing device, comprising: The lower shell and the upper shell are both fixedly installed with wing plates, which are locked by bolts. The lower shell and the upper shell are detachably connected to form a closed ring. A spacer assembly is provided at the concave surfaces of the lower and upper housings to form a sealing cavity. The spacer assembly includes a spacer sleeve, a circumferential sleeve, and ribs. Several ribs are fixedly installed at the concave surfaces of the lower and upper housings. The spacer sleeve is sleeved on the ribs. The circumferential sleeve is fixedly connected to the spacer sleeve. The spacer sleeve and the circumferential sleeve together form a sealing body. A pressure relief structure is provided on one side of the lower housing for venting the sealed cavity. The pressure relief structure includes an exhaust pipe, an adjusting screw, a sealing ring, and a plug. The exhaust pipe is fixedly installed on the lower housing. The adjusting screw is threadedly connected to the exhaust pipe. The sealing ring is fixedly connected to the exhaust pipe. The plug is rotatably connected to the adjusting screw. The plug can compress the sealing ring to deform and seal the end of the exhaust pipe.

[0008] In a preferred embodiment of this utility model, both the lower shell and the upper shell are arc-shaped plates with equal diameters, and the ribs on the inner walls of the lower shell and the upper shell are distributed in a one-to-one correspondence.

[0009] In a preferred embodiment of this utility model, the circumferential sleeve is rectangular, the spacer sleeve is semi-circular, the number of spacer sleeves is equal to the number of ribs, and two parallel circumferential sleeves are provided on both sides of the spacer sleeve.

[0010] In a preferred embodiment of this utility model, the outer circumferential surface of the spacer sleeve is provided with an arc-shaped groove adapted to the rib, and the rib is inserted into the arc-shaped groove of the spacer sleeve.

[0011] In a preferred embodiment of this utility model, the pressure relief structure further includes a nut, and the end of the exhaust pipe is welded with a nut via a bracket, and the adjusting screw is threadedly connected to the nut.

[0012] In a preferred embodiment of this utility model, the diameter of the adjusting screw is smaller than the inner diameter of the exhaust pipe, a gap is left between the nut and the end of the exhaust pipe, the plug is frustum-shaped, and the sealing ring is fixedly installed in the port of the exhaust pipe away from the nut.

[0013] As a preferred embodiment of the present invention, the pressure relief structure further includes a second sealing plug, which is threadedly connected to the adjusting screw. The second sealing plug is annular, with threads on its inner wall and a rubber ring on its outer wall. The second sealing plug can enter the exhaust pipe to seal the port of the exhaust pipe near the nut.

[0014] This utility model provides a rotary emergency sealing device for municipal gas pipeline leaks. It has the following beneficial effects: 1. This rotary municipal gas pipeline leak emergency sealing device, by rotating the adjusting screw, pushes the plug away from the port of the exhaust pipe, the plug separates from the sealing ring and forms a gap, the exhaust pipe extends to a sealing cavity in the middle of the lower shell, and the damaged part of the gas pipeline is directly opposite the sealing cavity in the middle position. The gas in the middle sealing cavity is discharged and depressurized through the exhaust pipe, ensuring that the lower shell and upper shell are not disturbed by the gas pressure during the closing process, which facilitates the precise closing of the lower shell and upper shell to form a sealing barrier, and prevents the gas leaking from the gas pipeline from forming high pressure in the sealing cavity, making it difficult for the upper shell and lower shell to close.

[0015] 2. This rotary municipal gas pipeline leak emergency sealing device uses a reverse-rotating adjusting screw to drive a sealing ring into the interior of the sealing ring. The sealing ring is deformed by the circumferential surface of the plug, thus sealing one end of the exhaust pipe. Then, the second sealing plug is rotated, and it enters the other end of the exhaust pipe and seals that end. As a result, both ends of the exhaust pipe are sealed, reducing the probability of gas overflowing from the sealed cavity in the middle after pressure relief.

[0016] 3. This rotary municipal gas pipeline leakage emergency sealing device uses multiple ribs on the inner walls of the lower and upper shells. The ribs at relatively opposite positions on the lower and upper shells form a ring, and the spacer sleeves fitted on the ribs are squeezed by the ribs to form a seal. This design makes the outer wall of the gas pipeline form multiple independent sealing cavities, suppressing gas leakage and achieving emergency sealing. The circumferential sleeve can ensure the sealing of the contact end face of the lower and upper shells. It has the characteristics of convenient installation and good sealing performance. Attached Figure Description

[0017] Figure 1 This is one of the overall perspective views of this utility model; Figure 2 This is the second overall perspective view of the present utility model; Figure 3 This is a schematic diagram of the installation of the gas pipe and the lower housing of this utility model; Figure 4 This is an assembly drawing of the spacer sleeve and the rib of this utility model; Figure 5 This is a partial radial cross-sectional view of the exhaust pipe of this utility model.

[0018] Legend: 10. Lower shell; 11. Upper shell; 12. Wing plate; 13. Spacer sleeve; 14. Circumferential sleeve; 15. Rib; 20. Exhaust pipe; 21. Adjusting screw; 22. Sealing ring; 23. Plug; 24. Nut; 25. Second sealing plug. Detailed Implementation

[0019] A rotary emergency sealing device for municipal gas pipeline leaks, such as Figure 1 and Figure 2 As shown, it includes: The lower housing 10 and the upper housing 11 are both fixedly installed with wing plates 12. The wing plates 12 are locked by bolts. The lower housing 10 and the upper housing 11 are detachably connected to form a closed ring. Specifically, the wing plate 12 can be fixed to the upper shell 11 or the lower shell 10 by welding. The wing plate 12 is locked with bolts and nuts. The upper shell 11 and the lower shell 10 form a ring to wrap around the damaged part of the pipe. The detachable lower shell 10 and upper shell 11 can be rotated to adjust the position of the pipe blockage.

[0020] like Figure 2 , Figure 3 and Figure 4 As shown, a spacer assembly is provided at the concave surfaces of the lower housing 10 and the upper housing 11 to form a sealing cavity. The spacer assembly includes a spacer sleeve 13, a circumferential sleeve 14, and ribs 15. Several ribs 15 are fixedly installed at the concave surfaces of the lower housing 10 and the upper housing 11. The spacer sleeve 13 is sleeved on the ribs 15. The circumferential sleeve 14 is fixedly connected to the spacer sleeve 13. The spacer sleeve 13 and the circumferential sleeve 14 together form a sealing body. The lower housing 10 and the upper housing 11 are both arc-shaped plates with equal diameters. The ribs 15 on the inner walls of the lower housing 10 and the upper housing 11 are distributed one-to-one. The circumferential sleeve 14 is rectangular, and the spacer sleeve 13 is semi-circular. The number of spacer sleeves 13 is equal to the number of ribs 15. Two parallel circumferential sleeves 14 are provided on both sides of the spacer sleeve 13. The outer circumferential surface of the spacer sleeve 13 is provided with an arc-shaped groove adapted to the ribs 15. The ribs 15 are inserted into the arc-shaped groove of the spacer sleeve 13. In this design, multiple ribs 15 on the inner walls of the lower housing 10 and the upper housing 11 form a ring when the ribs 15 are positioned opposite each other. The spacer sleeve 13 fitted on the ribs 15 forms a seal when squeezed by the ribs 15. This design creates multiple independent sealing cavities on the outer wall of the gas pipeline, suppressing gas leakage and achieving emergency sealing. The circumferential sleeve 14 ensures the sealing of the contact surfaces of the lower housing 10 and the upper housing 11, and features convenient installation and good sealing performance.

[0021] like Figure 4 and Figure 5As shown, a pressure relief structure is installed on one side of the lower housing 10 for venting the sealed cavity. The pressure relief structure includes an exhaust pipe 20, an adjusting screw 21, a sealing ring 22, and a plug 23. The exhaust pipe 20 is fixedly installed to the lower housing 10. The adjusting screw 21 is threadedly connected to the exhaust pipe 20. The sealing ring 22 is fixedly connected to the exhaust pipe 20. The plug 23 is rotatably connected to the adjusting screw 21. The plug 23 can compress the sealing ring 22 to deform and seal the end of the exhaust pipe 20. The pressure relief structure also includes a nut 24. The end of the exhaust pipe 20 is welded with a nut 24 through a bracket. The adjusting screw 21 and the nut 23 are connected... 4. Threaded connection, the diameter of the adjusting screw 21 is smaller than the inner diameter of the exhaust pipe 20, there is a gap between the nut 24 and the end of the exhaust pipe 20, the plug body 23 is frustoconical, the sealing ring 22 is fixedly installed in the port of the exhaust pipe 20 away from the nut 24, the pressure relief structure also includes a second sealing plug 25, the second sealing plug 25 is threadedly connected to the adjusting screw 21, the second sealing plug 25 is annular, the inner wall of the second sealing plug 25 is threaded, the outer wall of the second sealing plug 25 is provided with a rubber ring, the second sealing plug 25 can enter the interior of the exhaust pipe 20 to block the port of the exhaust pipe 20 near the nut 24; As a supplement to the above solution, by rotating the adjusting screw 21, the adjusting screw 21 pushes the plug 23 away from the port of the exhaust pipe 20, the plug 23 separates from the sealing ring 22 and forms a gap, and the exhaust pipe 20 extends to a sealing cavity in the middle position of the lower housing 10. The damaged part of the gas pipeline is directly opposite the sealing cavity in the middle position. The gas in the middle sealing cavity is discharged and depressurized through the exhaust pipe 20, ensuring that the lower housing 10 and the upper housing 11 are not disturbed by the gas pressure during the assembly process, and facilitating the precise closure of the lower housing 10 and the upper housing 11 to form a sealing barrier.

[0022] By rotating the adjusting screw 21 in the opposite direction, the adjusting screw 21 drives the sealing ring 22 into the interior of the sealing ring 22. The sealing ring 22 is deformed by the circumferential surface of the plug body 23, thereby sealing one end of the exhaust pipe 20. Then, the second sealing plug 25 is rotated, and the second sealing plug 25 enters the other end of the exhaust pipe 20 and seals that end. Thus, both ends of the exhaust pipe 20 are sealed, reducing the probability of gas leakage from the sealed cavity in the middle position after pressure relief.

[0023] The working principle of this utility model is as follows: The wing plate 12 can be fixed to the upper shell 11 or the lower shell 10 by welding. The wing plate 12 is locked with bolts and nuts. The upper shell 11 and the lower shell 10 form a ring that wraps around the damaged part of the pipeline. Rotating the adjusting screw 21 pushes the plug 23 away from the port of the exhaust pipe 20. The plug 23 separates from the sealing ring 22 and forms a gap. The exhaust pipe 20 extends to a sealed cavity in the middle of the lower shell 10. The damaged part of the gas pipeline is directly opposite the sealed cavity in the middle. The gas in the middle sealed cavity is discharged and depressurized through the exhaust pipe 20, ensuring that the lower shell 10 and the upper shell 11 are not affected by the gas during the assembly process. The pressure interference facilitates the precise closure of the lower housing 10 and the upper housing 11. Through the multiple ribs 15 on the inner walls of the lower housing 10 and the upper housing 11, the ribs 15 at the relative positions of the lower housing 10 and the upper housing 11 will form a ring. The spacer sleeve 13 fitted on the rib 15 will form a seal after being squeezed by the rib 15. This design makes the outer wall of the gas pipeline form multiple independent sealing cavities, suppressing the leakage of gas and realizing emergency sealing. This solution is used for temporary sealing of gas pipeline leaks during municipal emergency repairs. The pressure relief component is used to discharge the gas leak from the gas pipeline when the upper housing 11 and the lower housing 10 are closed, and locks the seal after the upper housing 11 and the lower housing 10 are closed to achieve sealing. The spacer sleeve 13 and the sealing ring 22 are made of fluororubber with a hardness of Shore A 80±5 and a temperature range of -30℃ to 200℃. The bolts for fastening the wing plate 12 are copper alloy explosion-proof bolts.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary emergency sealing device for municipal gas pipeline leaks, characterized in that, include: The lower housing (10) and the upper housing (11) are both fixedly installed with wing plates (12), which are locked by bolts. The lower housing (10) and the upper housing (11) are detachably connected to form a closed ring. A spacer assembly is provided at the concave surfaces of the lower housing (10) and the upper housing (11) to form a sealing cavity. The spacer assembly includes a spacer sleeve (13), a circumferential sleeve (14), and a rib (15). Several ribs (15) are fixedly installed at the concave surfaces of the lower housing (10) and the upper housing (11). The spacer sleeve (13) is sleeved on the ribs (15). The circumferential sleeve (14) is fixedly connected to the spacer sleeve (13). The spacer sleeve (13) and the circumferential sleeve (14) together form a sealing body. A pressure relief structure is provided on one side of the lower housing (10) for venting the sealed cavity. The pressure relief structure includes an exhaust pipe (20), an adjusting screw (21), a sealing ring (22), and a plug (23). The exhaust pipe (20) is fixedly installed on the lower housing (10). The adjusting screw (21) is threadedly connected to the exhaust pipe (20). The sealing ring (22) is fixedly connected to the exhaust pipe (20). The plug (23) is rotatably connected to the adjusting screw (21). The plug (23) can compress the sealing ring (22) to deform and seal the port of the exhaust pipe (20).

2. The rotary municipal gas pipeline leak emergency sealing device according to claim 1, characterized in that: Both the lower shell (10) and the upper shell (11) are arc-shaped plates. The diameters of the lower shell (10) and the upper shell (11) are equal. The ribs (15) on the inner walls of the lower shell (10) and the upper shell (11) are distributed in a one-to-one correspondence.

3. The rotary municipal gas pipeline leak emergency sealing device according to claim 1, characterized in that: The circumferential sleeve (14) is rectangular, the spacer sleeve (13) is semi-circular, the number of spacer sleeves (13) is equal to the number of ribs (15), and two parallel circumferential sleeves (14) are provided on both sides of the spacer sleeve (13).

4. The rotary municipal gas pipeline leak emergency sealing device according to claim 1, characterized in that: The outer circumferential surface of the spacer sleeve (13) is provided with an arc-shaped groove adapted to the protruding rib (15), and the protruding rib (15) is inserted into the arc-shaped groove of the spacer sleeve (13).

5. The rotary municipal gas pipeline leak emergency sealing device according to claim 1, characterized in that: The pressure relief structure also includes a nut (24), and the end of the exhaust pipe (20) is welded with a nut (24) via a bracket. The adjusting screw (21) is threadedly connected to the nut (24).

6. The rotary municipal gas pipeline leak emergency sealing device according to claim 5, characterized in that: The diameter of the adjusting screw (21) is smaller than the inner diameter of the exhaust pipe (20). There is a gap between the nut (24) and the end of the exhaust pipe (20). The plug (23) is frustum shaped. The sealing ring (22) is fixedly installed in the port of the exhaust pipe (20) away from the nut (24).

7. The rotary municipal gas pipeline leak emergency sealing device according to claim 5, characterized in that: The pressure relief structure also includes a second sealing plug (25), which is threadedly connected to the adjusting screw (21). The second sealing plug (25) is annular, with threads on the inner wall and a rubber ring on the outer wall. The second sealing plug (25) can enter the exhaust pipe (20) to block the port of the exhaust pipe (20) near the nut (24).

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