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Pipeline welding structure for pull pipe construction method

A technology for welding structures and pipe joints, applied in the direction of pipes/pipe joints/pipe fittings, pipe joints, non-detachable pipe connections, etc. The effect of compactness and simple structure

Inactive Publication Date: 2016-09-21
江苏中达建设工程有限公司
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AI Technical Summary

Problems solved by technology

[0002] Urban road pipeline construction, due to traffic conditions, there is no slope excavation condition on site, and the method of strengthening the support and excavation of the entire section without grading has high requirements for support, low construction safety guarantees, high fraud, and has a great impact on traffic. Highly impacted, traffic diversion requirements cannot be guaranteed

Method used

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] like figure 1 , 2 As shown, a pipe welding structure for pipe drawing method includes an outer casing 3 at the pipe joint of two pipelines 1 and 2, and more than one welding groove 9 is provided at both ends of the outer casing 3, as figure 1 Three lines (one side) are shown, and the position of the pipe wall 12 between the two ends of the welding groove 9 is different, which is beneficial to the firmness of the outer sleeve 3 as a whole. The welding groove 9 does not penetrate on the tube wall of the outer casing 3, such as a C-shape, or shorter than the C-shape, but it cannot penetrate, otherwise the outer casing 3 is divided into two pipe bodies, and the outer casing 3 is also retained. Tube 3 integrity. The two ends of the outer casing 3 are respectively welded on two sections of pipelines 12 to form a weld 8, and in the...

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Abstract

The invention discloses a pipeline welding structure for a pull pipe construction method. The pipeline welding structure comprises an outer sleeve at a pipeline joint, more than one welding slot is arranged at each of two ends of the outer sleeve, the welding slots do not run through the pipe wall of the outer sleeve; at two sides of the outer sleeve and in the welding slots, the outer sleeve is welded with a pipeline in the outer sleeve; on the inner wall of the outer sleeve, a first welding rod, a second welding rod, a third welding rod and a fourth welding rod are arranged in the middle of the outer sleeve; the pipeline joint is located between the second welding rod and the third welding rod; and the first welding rod, the second welding rod, the third welding rod and the fourth welding rod are connected between the outer sleeve and the pipeline in a sealed way by adopting a hot melting manner. The pipeline welding structure is simple in structure, and the arrangement of the outer sleeve structure ensures the firmness and tightness of welding of two pipelines in long-distance traction and drawing.

Description

technical field [0001] The invention relates to a welded structure, in particular to a pipe welded structure used in a pipe-drawing method. Background technique [0002] Urban road pipeline construction, due to traffic conditions, there is no slope excavation condition on site, and the method of strengthening the support and excavation of the entire section without grading has high requirements for support, low construction safety guarantees, high fraud, and has a great impact on traffic. The impact is so high that traffic diversion requirements cannot be guaranteed. The non-excavation drawing pipe construction method has solved the above-mentioned problem, discloses a kind of non-excavation drawing pipe construction method as the patent document of CN101457853A as publication number, comprises the following steps: (1) preparatory work: understand stratum and underground situation, calculate expansion The number of holes and the specifications of the re-expander, formulate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L13/02
CPCF16L13/0236F16L2201/30
Inventor 周仁东
Owner 江苏中达建设工程有限公司
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