KR900002021A - Lining method of plug valve and ethylene tetrafluoride inside the valve - Google Patents

Lining method of plug valve and ethylene tetrafluoride inside the valve Download PDF

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Publication number
KR900002021A
KR900002021A KR1019880008428A KR880008428A KR900002021A KR 900002021 A KR900002021 A KR 900002021A KR 1019880008428 A KR1019880008428 A KR 1019880008428A KR 880008428 A KR880008428 A KR 880008428A KR 900002021 A KR900002021 A KR 900002021A
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KR
South Korea
Prior art keywords
valve body
auxiliary ring
valve
rubber bag
housing
Prior art date
Application number
KR1019880008428A
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Korean (ko)
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KR900005736B1 (en
Inventor
정한진
Original Assignee
정한진
한발테프론공업 주식회사
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Application filed by 정한진, 한발테프론공업 주식회사 filed Critical 정한진
Priority to KR1019880008428A priority Critical patent/KR900005736B1/en
Publication of KR900002021A publication Critical patent/KR900002021A/en
Application granted granted Critical
Publication of KR900005736B1 publication Critical patent/KR900005736B1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

내용 없음.No content.

Description

플러그 밸브(plug valve) 및 밸브 내면의 4불화 에틸렌수지 라이닝 방법Lining method of plug valve and ethylene tetrafluoride inside the valve

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래의 압축 공기를 이용한 블로우 모울딩(blow moulding)방법에 따라 밸브 몸체에 4불화 에틸렌수지 튜브를 삽입시켜 놓은 상태의 단면도.1 is a cross-sectional view of a tetrafluoroethylene resin tube inserted into a valve body according to a conventional blow molding method using compressed air.

제3도는 블로우 모울딩 방법에 따라 튜브를 확관시킨 다음 밸브 몸체 중간의 윗부분을 플레어링한 상태의 단면도.3 is a cross-sectional view of the tube being expanded according to the blow molding method and then flared at the upper portion of the middle of the valve body.

제5도는 직접 라이닝을 하기 위하여 고무백과 코어를 주물 몸체에 장착시킨후 4불화 에틸렌수지를 고무백과 하우징 사이에 충전시키는 상태의 단면도.5 is a cross-sectional view of a state in which a rubber bag and a core are mounted on a casting body for direct lining and then ethylene tetrafluoride is filled between the rubber bag and the housing.

Claims (5)

플러그 밸브 몸체의 내부에 고무백과 성형코어를 넣고 양측 플랜지에 보조링을 붙여 고무백의 넓은 끝부분이 보조링을 덮게한다음 커버플랜지와 누름판을 끼우는 단계 ; 밸브 몸체의 윗부분에 보조링을 붙이고 고무백과 밸브 몸체 사이의 공간에 4불화 에틸렌수지 분말을 충전시간후 고무백의 넓은 끝부분이 보조링을 덮게한다음 톱커버를 덮어 끼우는 단계 ; 이렇게 준비된 밸브 몸체를 수압 용기에 넣어 수압을 180㎏/㎠ 내지 350㎏/㎠에서 20분 내지 40분간 일정한 수압으로 수지 분말을 압착시키는 단계 ; 수압 용기로부터 꺼내어 톱커버, 보조링, 누름판, 커버플랜지, 보조링, 코어, 고무백을 제거하는 단계 ; 전기로내에 넣어 온도가 시간당 40℃ 비율로 상승되도록 하여 380℃까지 가열하고 이 온도에서 4시간 정도 유지시키는 단계 ; 전기로에서 꺼내어 대기중에서 밸브 몸체의 온도가 상온으로 돌아오게 하는 단계로 이루어지는 것을 특징으로 하는 플러그 밸브 내면의 4불화 에틸렌수지 직접 라이닝 방법.Inserting the rubber bag and the forming core into the plug valve body, attaching the auxiliary ring to both flanges so that the wide end of the rubber bag covers the auxiliary ring, and then fitting the cover flange and the pressing plate; Attaching the auxiliary ring to the upper part of the valve body, filling the space between the rubber bag and the valve body with ethylene tetrafluoride powder and allowing the wide end of the rubber bag to cover the auxiliary ring after the filling time; Putting the prepared valve body in a hydraulic container to press the resin powder at a constant water pressure for 20 to 40 minutes at 180 kg / cm 2 to 350 kg / cm 2; Removing the top cover, auxiliary ring, pressing plate, cover flange, auxiliary ring, core, and rubber bag from the hydraulic container; Putting in an electric furnace to raise the temperature at a rate of 40 ° C. per hour, heating to 380 ° C. and maintaining at this temperature for about 4 hours; Direct removal of the ethylene tetrafluoride ethylene resin on the inner surface of the plug valve comprising the step of taking out of the electric furnace to return the temperature of the valve body to room temperature in the atmosphere. 제1항에 있어서, 성형 소결이 완료된 밸브 몸체의 플랜지면에 볼트 구멍을 뚫고 수지 플레어면을 마무리 가공하는 단계로 이루어지는 것을 특징으로 하는 플러그 밸브 내면의 4불화 에틸렌수지 직접 라이닝 방법.The method as claimed in claim 1, further comprising a step of drilling a bolt hole in the flange face of the valve body in which the molding and sintering is completed, and finishing the resin flare face. 제1항 및 제2항 중 어느 한 항에 있어서, 상기 수압 용기의 수압을 300㎏/㎠까지 올려 30분간 유지시키는 것을 특징으로 하는 플러그 밸브 내면의 4불화 에틸렌 수지 직접 라이닝 방법.The tetrafluorinated ethylene resin direct lining method according to any one of claims 1 and 2, wherein the hydraulic pressure of the hydraulic container is raised to 300 kg / cm 2 and maintained for 30 minutes. 제1항 및 제2항 중 어느 한 항에 있어서, 직접 라이닝 하려고 하는 밸브 몸체는 하우징의 원주 방향을 따라 어느 위치에서의 하우징 내면의 직경보다 약간 큰 직경의 홈을 형성하여 된 것을 특징으로 하는 플러그 밸브 내면의 4불화 에틸렌 수지 직접 라이닝 방법.The plug according to any one of claims 1 to 2, wherein the valve body to be directly lined forms a groove having a diameter slightly larger than the diameter of the inner surface of the housing at a position along the circumferential direction of the housing. Method for direct lining of tetrafluoroethylene resin inside the valve. 밸브몸체의 하우징의 원주 방향을 따라 어느 위치에서의 하우징 내면의 직경보다 약간 큰 직경의 홈을 형성하여서 된 것을 특징으로 하는 밸브.And a groove having a diameter slightly larger than the diameter of the inner surface of the housing at any position along the circumferential direction of the housing of the valve body. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880008428A 1988-07-07 1988-07-07 Plug valve and method of its lining using four inert ethylene-resin KR900005736B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880008428A KR900005736B1 (en) 1988-07-07 1988-07-07 Plug valve and method of its lining using four inert ethylene-resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880008428A KR900005736B1 (en) 1988-07-07 1988-07-07 Plug valve and method of its lining using four inert ethylene-resin

Publications (2)

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KR900002021A true KR900002021A (en) 1990-02-28
KR900005736B1 KR900005736B1 (en) 1990-08-09

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KR1019880008428A KR900005736B1 (en) 1988-07-07 1988-07-07 Plug valve and method of its lining using four inert ethylene-resin

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102552414B1 (en) 2022-11-11 2023-07-06 케이원산업 주식회사 Pruning device for a vehicle pruning a street tree

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102552414B1 (en) 2022-11-11 2023-07-06 케이원산업 주식회사 Pruning device for a vehicle pruning a street tree

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Publication number Publication date
KR900005736B1 (en) 1990-08-09

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