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Mounting method of plastic blind flange for sealing pipe

A blind flange, plastic technology, applied in the direction of pipes/pipe joints/fittings, devices for coating liquid on the surface, pipe components, etc., to achieve the effects of easy management, easy recycling, and easy loading and unloading.

Active Publication Date: 2012-06-27
HUDONG ZHONGHUA SHIPBUILDINGGROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned difficulties and defects of the prior art, and provide a method for installing a plastic blind flange used for pipe sealing, which can ensure that one end of the screw rod is flush with the nut after installation

Method used

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  • Mounting method of plastic blind flange for sealing pipe
  • Mounting method of plastic blind flange for sealing pipe
  • Mounting method of plastic blind flange for sealing pipe

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with embodiment and accompanying drawing, but should not limit the scope of the present invention with this.

[0031] 1. A method for installing a plastic blind flange for pipe sealing, the method comprising the following steps:

[0032] ① According to the specifications of the port flange of the pipe to be sealed, select a plastic blind flange, select a small plastic screw, a small plastic nut that matches the small plastic screw, and a large steel washer with a small size; the outer surface of the small plastic screw The diameter is not greater than the diameter of the connecting screw hole of the plastic blind flange, and the outer diameter of the large steel washer should be greater than the diameter of the connecting screw hole of the plastic blind flange;

[0033] ② When there is no misalignment between the blind flange and the pipe flange screw hole, screw the nut on the end of the screw so that...

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Abstract

The invention relates to a mounting method of a plastic blind flange for sealing a pipe, wherein a small plastic screw, nuts and big steel washers are adopted to mount the blind flange; one end of the mounted screw is level with the nuts; the two nuts can both be conveniently screwed out of the screw in case of dismounting the flange; and the screw and the nuts made of plastics have low price and are convenient to recover. The bolts, the nuts and the washers of the same specification can be used mounting the blind flanges of multiple specifications, so as to reduce the specification number and facilitate management.

Description

technical field [0001] The invention relates to the manufacture and installation of ship pipes, in particular to a method for installing plastic blind flanges used for pipe sealing, which can be used for ship pipe processing and sealing after segmental pre-outfitting. Background technique [0002] Prior to this, after the ship's pipes were pre-outfitted in sections, before entering the paint shop for sand washing, the plastic blind flanges had to be installed on the end flanges of the pipes with steel bolts and nuts. This method has the following disadvantages: [0003] 1. Due to the large number of blind flange specifications, there are also many bolt specifications that need to be used together, making management difficult. It is difficult to ensure that the end of the bolt is flush with the nut after installation. Sometimes the bolt protrudes beyond the nut (see figure 1 ), in this case, after the painting operation, the thread at the end of the bolt is contaminated wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/10B05D1/32B05C13/02
Inventor 刘希权陈琰姚仁光许正权
Owner HUDONG ZHONGHUA SHIPBUILDINGGROUP