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Reinforcement member and reinforcement method for joint portion of fluorocarbon resin piping

A technology for strengthening parts and joints, which is applied in the direction of pipes/pipe joints/fittings, pipe elements, pipeline connection arrangements, etc., can solve the problems of water leakage and uneven joints in the joints, and achieve the effect of preventing leakage.

Active Publication Date: 2021-06-18
KURITA WATER INDUSTRIES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when joining pipes made of fluorocarbon resin by welding, joint unevenness tends to occur, so there is a problem that water leakage tends to occur at the joint.

Method used

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  • Reinforcement member and reinforcement method for joint portion of fluorocarbon resin piping
  • Reinforcement member and reinforcement method for joint portion of fluorocarbon resin piping
  • Reinforcement member and reinforcement method for joint portion of fluorocarbon resin piping

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Embodiment Construction

[0033] Next, an embodiment of a reinforcing member for a joint portion of a fluorocarbon resin pipe according to the present invention will be described in detail with reference to the drawings.

[0034] In the present embodiment, the fluorocarbon-based resin piping for liquid circulation to be reinforced is piping for transporting ultrapure water in order to avoid elution of organic substances from the piping. As the fluorocarbon resin, for example, polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), perfluoroalkoxy vinyl ether (PPFA), tetrafluoroethylene-hexafluoropropylene copolymer (FEP) can be used , tetrafluoroethylene-ethylene copolymer (ETFE), vinyl fluoride (PVF), etc. Among them, PVDF is generally used for piping for transporting pure water or ultrapure water.

[0035] In addition, the connected tubular member having a portion having the same diameter as the pipe is, for example, a pipe having the same diameter or a flange member having a tubular portion...

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Abstract

The reinforcing member of the present invention is formed by combining a pair of fluorocarbon resin cover members (1A) and (1B) having the same shape. The inner diameter of the circle formed by combining the cover members (1A) and (1B) is set to be the same as the outer diameter of the pipe to be reinforced. Groove portions are formed along the inner peripheral surfaces at the center portions in the width direction of the cover members (1A) and (1B). In addition, a drainage hole (3) is formed in the arcuate top of the cover member (1A, 1B) through the thickness direction, and a screw groove (3A) is formed on the drainage hole (3) from the outside to the inside. According to this reinforcing member, it is possible to easily reinforce the joint portion where the fluorocarbon-based resin piping for liquid communication and another tubular member are joined by welding.

Description

technical field [0001] The present invention relates to a reinforcing member and a reinforcing method for a junction between a pipe made of fluorocarbon resin (fluorocarbon resin) such as PVDF used in water supply pipes such as pure water and ultrapure water, and other tubular members. , relates to a reinforcing member capable of easily reinforcing a junction between a fluorocarbon resin pipe and another tubular member by welding, and a reinforcing method using the reinforcing member. Background technique [0002] In recent years, in the field of manufacturing semiconductors and liquid crystal displays, with the promotion of miniaturization, high functionality, and high performance of products, it is gradually required that the ultrapure water used in the process of washing them have extremely high water quality, etc. High purity, for example, the total amount of impurities of organic matter (TOC: total organic carbon) that can be allowed to exist in water is already on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L47/02B29C65/02F16L55/17
CPCB29C65/02F16L47/02F16L55/17
Inventor 村田秀行
Owner KURITA WATER INDUSTRIES LTD