Fixing method for step-by-step crossing casing of long-distance natural gas pipeline

A fixing method, a natural gas technology, applied in the directions of pipes/pipe joints/pipes, pipe protection, pipe supports, etc., can solve the problems of mutual interference between the optical cable pipe protection sleeve and the main pipeline, pipeline damage, etc., and achieve a simple and reliable construction method. , Guarantee gas supply, increase the effect of pipeline life

Active Publication Date: 2022-06-21
HUAINAN MINING IND GRP +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: how to solve the problem that the optical cable tube protection casing and the main pipeline pass through at the same time during the existing long-distance natural gas pipeline penetration construction process, causing mutual interference and damage to the pipeline

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fixing method for step-by-step crossing casing of long-distance natural gas pipeline
  • Fixing method for step-by-step crossing casing of long-distance natural gas pipeline
  • Fixing method for step-by-step crossing casing of long-distance natural gas pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for fixing a long-distance natural gas pipeline through a casing step by step, including the following steps:

[0039] Step S01: making an auxiliary support 4 for assisting the construction of the optical cable protection sleeve 2, and a fixing bracket 5 for fixing the optical cable protection sleeve 2 in the cement sleeve 1;

[0040] like figure 1 As shown, the auxiliary bracket 4 can be an angle steel, such as image 3 As shown, in this embodiment, round steel is preferred, but of course it can also be a structure such as a steel bar; the cement casing used for the jacking of a long-distance pipeline can also use two different auxiliary supports at the same time, such as angle steel and round steel. .

[0041] The length of the auxiliary support 4 is 0.9-1 times of the diameter of the cement sleeve 1, preferably the length of the auxiliary support 4 is less than the inner diameter of the cement sleeve 1, and the two ends of the auxiliary support 4 and the i...

Embodiment 2

[0048] like figure 2 As shown, in this embodiment, the fixing bracket 5 is a U-shaped structure, and both ends of the U-shaped structure are provided with connecting lugs, and the lugs are provided with 6 mm connecting holes. The curved surface of the U-shaped structure is effectively combined with the outer wall of the optical cable protective sleeve 2, and the lugs at both ends are used to connect with the cement sleeve 1; in addition to the U-shaped structure, it can also be a large half of the U-shaped structure to be able to hook the optical cable. The protection sleeve 2 is a basic requirement; other fixing brackets 5 capable of fixing the optical cable protection sleeve 2 are also possible.

[0049] In the step S04, the expansion screw is passed through the connecting hole, and the fixing bracket 5 is fixed on the inner wall of the cement casing 1 by using an impact drill; the optical cable protection casing 2 is fixed on the upper left of the inner wall of the cement ...

Embodiment 3

[0054] When the number of the optical cable protection sleeves 2 is more than two, first place one of the optical cable protection sleeves 2 on the auxiliary support 4, place the optical cable protection sleeve 2 on the auxiliary support 4, and use the equipment to place another on the cement sleeve 1. One side transports the optical cable protection sleeve 2 to the designated position; after the optical cable protection sleeve 2 passes through to the designated position, the optical cable protection sleeve 2 is fixed on the inner wall of the cement sleeve 1 through the fixing bracket 5. After the fixing is completed, all auxiliary brackets are fixed. 4. Take out all of them; and then construct another optical cable protective cover 2 in the same way.

[0055] like Image 6 As shown, when there are two optical cable protection sleeves 2, a plurality of auxiliary supports 4 are placed in horizontal planes of different heights. During specific construction, considering the conve...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a step-by-step fixing method for a long-distance natural gas pipeline passing through a casing, which includes the following steps: step S01: making auxiliary supports and fixing the supports; step S02: fixing a plurality of auxiliary supports in the cement casing at intervals along the same horizontal plane; step S03: Place the optical cable protection sleeve on the auxiliary support, and use the equipment to transport the optical cable protection sleeve to the other side of the cement sleeve to the designated position; Step S04: After the optical cable protection sleeve passes through the designated position, pass the optical cable through the fixing bracket The protective casing is fixed on the inner wall of the cement casing, and after the fixing is completed, all the auxiliary supports are taken out; step S05: the gas transmission main pipe is passed through the cement casing to a designated position. The beneficial effect of the invention is that the probability of damage to the pipeline is greatly reduced, the secondary replacement of the pipeline is avoided, the construction quality of the pipeline is guaranteed, the service life of the pipeline is greatly increased, and the operation risk is reduced, thereby ensuring gas supply to downstream users.

Description

technical field [0001] The invention relates to a pipeline construction technology, in particular to a construction method for a long-distance natural gas pipeline. Background technique [0002] During the construction of long-distance pipelines, there will be a large number of constructions that cross high-speed, railways, national roads, and provincial roads. According to the relevant specifications and requirements, the pipe jacking method is generally selected to pass through, but the provided crossing construction method has great defects. [0003] After the pipe jacking is completed, in the previous construction plan, the optical cable protection sleeve is generally bundled with the gas transmission main pipe and passed through at the same time. In the actual construction process of the project, there are two commonly used pipe penetration methods: Method 1: excavate the guide trench, lift the equipment, and directly pass through. During this process, the optical cab...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): F16L7/00F16L1/06F16L57/00G02B6/50
CPCF16L7/00F16L1/06F16L57/00G02B6/50
Inventor时元宝李让杰周崔明朱从俊杜明珠
OwnerHUAINAN MINING IND GRP