CN-224214953-U - Natural gas pipeline pipe end plugging structure

CN224214953UCN 224214953 UCN224214953 UCN 224214953UCN-224214953-U

Abstract

The utility model provides a natural gas pipeline pipe end plugging structure which comprises a piston ring, a pushing rod, a baffle plate and a heat shrinkage belt. According to the utility model, the piston ring is provided with the notch, and the piston ring is broken into two ends by the notch. The two ends are connected with a pushing rod in a threaded manner, and the two ends can be pushed to move away from each other by rotating the pushing rod. When the thermal shrinkage sleeve is used, the outer diameter of the piston ring is matched with the pipe orifice of the pipeline by rotating the pushing rod, then the piston ring is pushed into the pipe orifice, the baffle is positioned at the pipe orifice of the pipeline, and then the thermal shrinkage sleeve is sleeved at the pipe orifice. Finally, the heat shrinkage belt is heated to wrap the heat shrinkage belt between the pipeline and the baffle plate, so that the sealing of the pipe orifice of the pipeline is realized, and the heat shrinkage belt is only required to be taken down and the piston ring is taken out from the inside of the pipeline during the later disassembly. And the piston ring can be recycled, so that the operation is convenient and fast, and the construction efficiency is effectively improved.

Inventors

WEI ZHANYONG
DONG WENJIANG
FAN XIAOLONG
GUO CHENGJIE
XIE YAJING
LI JINQING
MI ZHANJUN
SUN LIN
Niu Xuchao
SU HONGDA
REN HUILIANG
DU YUNBO
SONG CHENFEI

Assignees

河北省安装工程有限公司

Dates

Publication Date: 20260508
Application Date: 20250530

Claims (8)

1. A natural gas pipeline pipe end plugging structure, characterized by comprising: The piston ring (2) is provided with a notch which is used for breaking the piston ring (2) into two ends; The two ends of the pushing rod (5) are respectively in threaded connection with the two ends, and the external threads at the two ends of the pushing rod (5) are in opposite directions; a baffle plate (3) which is installed at one end of the piston ring (2) and is covered at the end part of the piston ring (2); the heat-shrinkable belt (4), the heat-shrinkable belt (4) is wrapped between the baffle plate (3) and the pipeline (1) and is used for sealing a gap between the baffle plate (3) and the pipeline (1).
2. The pipe end plugging structure of the natural gas pipeline according to claim 1, wherein a plurality of arc plates (31) are bent towards the same side at the outer side of the baffle plate (3), and the arc plates (31) are slidably arranged at the inner side of the piston ring (2).
3. A natural gas pipeline end closure structure according to claim 2, characterized in that the push rod (5) is located between two adjacent arcuate plates (31).
4. The pipe end plugging structure of the natural gas pipeline according to claim 2, wherein a clamping plate (311) is bent outwards from one side of the arc-shaped plate (31) away from the baffle plate (3), and a clamping groove for accommodating the clamping plate (311) is formed in the inner wall of the piston ring (2).
5. The pipe end plugging structure of a natural gas pipeline according to claim 1, wherein a limiting ring (21) for abutting against the end face of the pipeline (1) is arranged at the end of the piston ring (2) provided with the baffle (3) and bent outwards.
6. The pipe end plugging structure of the natural gas pipeline according to claim 5, wherein the limiting ring (21) is concavely provided with an annular groove for accommodating the end part of the pipeline (1).
7. The pipe end plugging structure of a natural gas pipeline according to claim 5, wherein two threaded sleeves (51) in threaded connection with the pushing rod (5) are fixedly arranged on the piston ring (2), the two threaded sleeves (51) are respectively positioned at the two ends, and the threaded sleeves (51) are positioned on the inner wall of the piston ring (2).
8. The pipe end plugging structure of a natural gas pipeline according to claim 7, wherein a limit table for abutting against the end of the piston ring (2) is arranged on the threaded sleeve (51).

Description

Natural gas pipeline pipe end plugging structure Technical Field The utility model belongs to the technical field of pipeline construction, and particularly relates to a pipe end plugging structure of a natural gas pipeline. Background The construction of natural gas engineering is generally in field construction, the wing plates of the natural gas pipeline are assembled and welded on the ground in sections, and after the welding, flaw detection and corrosion prevention are finished, the pipeline is conveyed into the excavated groove. In order to prevent the pipeline from entering underground water or sediment, the pipeline is difficult to clean in the later pipeline, and temporary plugging is usually carried out at the end part of the pipeline. And removing the plugging during the later operation. The current plugging mode generally adopts a steel plate welded at the end of the pipeline, and the sealing of the end of the pipeline is realized through the steel plate. But the steel plate needs to be cut off in the later stage by adopting the mode, on one hand, the steel plate cannot be reused, meanwhile, the operation is complex, the construction efficiency is low, and the labor intensity of operators is high. Disclosure of utility model The embodiment of the utility model provides a pipe end plugging structure of a natural gas pipeline, which aims to solve the problems of complex pipe end plugging operation and low construction efficiency in the construction process of the natural gas pipeline in the prior art. In order to achieve the purpose, the utility model adopts the technical scheme that the pipe end plugging structure of the natural gas pipeline comprises the following components: The piston ring is provided with a notch which is used for breaking the piston ring into two ends; The two ends of the pushing rod are respectively in threaded connection with the two ends, and the external threads at the two ends of the pushing rod are opposite in rotation direction; a baffle plate installed at one end of the piston ring and capped at the end of the piston ring; The heat shrinkage belt wraps between the baffle and the pipeline and is used for sealing a gap between the baffle and the pipeline. In one possible implementation manner, a plurality of arc plates are bent towards the same side at the outer side edge of the baffle plate, and a plurality of arc plates are slidably arranged at the inner side of the piston ring. In one possible implementation, the push rod is located between two adjacent arcuate plates. In one possible implementation manner, a clamping plate is bent outwards from one side of the arc-shaped plate away from the baffle, and a clamping groove for accommodating the clamping plate is formed in the inner wall of the piston ring. In one possible implementation, the end of the piston ring, on which the baffle is mounted, is bent outwards and provided with a stop collar for abutting against the end face of the pipeline. In one possible embodiment, the stop collar is provided with a recess for receiving an annular groove of the pipe end. In one possible implementation, the piston ring is fixedly provided with two threaded sleeves in threaded connection with the pushing rod, the two threaded sleeves are respectively positioned at the two ends, and the threaded sleeves are positioned on the inner wall of the piston ring. In one possible implementation, the threaded sleeve is provided with a stop abutment for abutment against the piston ring head. Compared with the prior art, the scheme provided by the embodiment of the application has the advantages that the piston ring is provided with the notch, and the notch breaks the piston ring into two ends. The two ends are connected with a pushing rod in a threaded manner, and the two ends can be pushed to move away from each other by rotating the pushing rod. A baffle is also arranged at one end of the piston ring, and the outer diameter size of the baffle is matched with the inner diameter size of the pipe orifice. And a thermal shrinkage belt is arranged at the pipe orifice of the baffle and the pipe. When the thermal shrinkage sleeve is used, the push rod is rotated to enable the outer diameter size of the piston ring to be matched with the pipe orifice of the pipeline, then the piston ring is pushed into the pipe orifice, the baffle is located at the pipe orifice of the pipeline, and then the thermal shrinkage sleeve is sleeved at the mouth of the pipeline. Finally, the heat shrinkage belt is heated to wrap the heat shrinkage belt between the pipeline and the baffle plate, so that the sealing of the pipe orifice of the pipeline is realized, and the heat shrinkage belt is only required to be taken down and the piston ring is taken out from the inside of the pipeline during the later disassembly. And the piston ring can be recycled, so that the operation is convenient and fast, and the construction efficiency is effectively improved. Drawings Fig. 1 i