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Sealing pressing flange anchoring structure of nodular cast iron pipe

A technology for ductile iron pipes and anchoring structures, which is applied to flange connections, pipes/pipe joints/fittings, passing components, etc., can solve the problems of not having pull-out prevention, etc., and achieve reduced construction costs, strong practicability, and reduced Effect of Axial Displacement

Inactive Publication Date: 2013-08-28
XINXING HEBEI ENG & RES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantage is that it does not have the performance of anti-pull-off, and it is necessary to set up buttresses where the pipeline turns, climbs, stops or changes diameters

Method used

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  • Sealing pressing flange anchoring structure of nodular cast iron pipe
  • Sealing pressing flange anchoring structure of nodular cast iron pipe

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

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

[0016] Such as figure 1 , figure 2 As shown, a ductile iron pipe sealing pressure flange anchoring structure includes a ductile iron pipe socket 1, a ductile iron pipe socket 2, a sealing ring 4 and a T-bolt pair 5, and a sealing pressure flange 3 with a boss. The outer wall of the ductile iron pipe socket 2 is matched with the sealing pressure flange 3 with bosses, and the outer wall of the ductile iron pipe socket 2 and the bosses of the sealing pressure flange 3 with bosses are provided with more than 3 corresponding radial positioning holes, A fastening screw 6 is arranged in the positioning hole, and the fastening screw 6 cooperates with the nut 8 .

[0017] Preferably, the boss of the sealing pressure flange 3 with a boss is provided with more than 3 corresponding threaded holes perpendicular to the positioning hole and paral...

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Abstract

The invention discloses a sealing pressing flange anchoring structure of a nodular cast iron pipe in the technical field of installation of pipelines. The sealing pressing flange anchoring structure of the nodular cast iron pipe comprises a nodular cast iron pipe bell end, a nodular cast iron pipe inserting port, a sealing ring and a T-type bolt pair, and further comprises a sealing pressing flange with a boss. Corresponding fastening bolt pairs are evenly distributed on the outer wall of the nodular cast iron pipe inserting port and the matched face of the sealing pressing flange with the boss, and the boss of the sealing pressing flange with the boss is provided with a corresponding thrust screw which is perpendicularly crossed with locating holes and axially parallel to the nodular cast iron pipe inserting port. The sealing pressing flange anchoring structure of the nodular cast iron pipe is formed by the fastening bolt pairs on the sealing pressing flange with the boss and locating bolt holes in the nodular cast iron pipe inserting port in a connecting mode, the thrust screw is matched to reduce the axial displacement, the sealing effect is ensured, meanwhile, separation between adjacent ports of the nodular cast iron pipe can be prevented, a buttress is removed, construction cost of the pipelines is reduced greatly, and the anchoring structure has high practicability.

Description

technical field [0001] The invention relates to the technical field of pipeline installation. Background technique [0002] The ductile iron pipe interface type is a connection method that must be selected in pipeline design. The mechanical K-type interface selected in the construction has a simple structure and is conveniently installed and disassembled by pressure flange bolt connection, which can ensure good sealing performance. But its disadvantage is that it does not have the performance of anti-pull-off, and it is necessary to set up buttresses where the pipeline turns, climbs, stops or changes diameters. In some special areas or where the space is limited, it is not allowed to set up buttresses, it is necessary to use restricted joints to resist the thrust generated by water pressure. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a joint anchoring structure of ductile iron pipes, which has a simple str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L23/024F16L23/032F16L23/18
Inventor 刘志丽董建忠王彦怀
Owner XINXING HEBEI ENG & RES INC
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