JPS5833868U

JPS5833868U - Seat emergency sealing device for valves

Info

Publication number: JPS5833868U
Application number: JP12856581U
Authority: JP
Inventors: 永野　務
Original assignee: 株式会社北沢バルブ
Priority date: 1981-08-29
Filing date: 1981-08-29
Publication date: 1983-03-05
Also published as: JPS6114765Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

図面は本考案の実施例を示したもので、第１図は本考案
におけるボールバルブの縦断面図、第２図は同上の一部
切欠き拡大断面図、第３図は、第２図に示した状態にお
いて火災時に作動した状態を示す一部切欠き拡大断面図
、第４図は本考案の他の実施例を示す一部切欠き断面図
である。１・・・ボデー、４・・・貫通孔、５・・・ボール、６
・・・ボールシート、７・・・シートリテーナ、８・・
・密封リング、９・・・間隙、１０・・・スペーサ、ｌ
ｌａ・・・押圧部、１１ｂ・・・楔形部、１２・・・緊
急シートリング、１３゜１４・・・傾斜面、１５．１７
・・・ばね。The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal cross-sectional view of the ball valve according to the present invention, FIG. 2 is a partially cutaway enlarged cross-sectional view of the same, and FIG. FIG. 4 is a partially cutaway enlarged sectional view showing a state in which the device is activated in the event of a fire in the illustrated state, and FIG. 1...Body, 4...Through hole, 5...Ball, 6
... Ball seat, 7... Seat retainer, 8...
・Sealing ring, 9... Gap, 10... Spacer, l
la... Pressing part, 11b... Wedge-shaped part, 12... Emergency seat ring, 13° 14... Inclined surface, 15.17
...Spring.

Claims

[Scope of utility model registration request]

A ball having a through hole is rotatably provided in the valve body, and a ball seat that makes sealing contact with the ball is held by a seat retainer provided between the body and the ball. In a valve equipped with a sealing ring between the inner peripheral surface of the body, 1. A flammable or fusible spacer is brought into contact with the outer periphery of the side surface of the seat retainer, and a pressing part for pressing the spacer is provided. A nonflammable or non-melting emergency seat ring is formed having a wedge-shaped part for sealing the outer peripheral surface of the seat retainer and the inner peripheral surface of the body at high temperatures, and the wedge-shaped part of this emergency seat ring and a part of the seat retainer are formed. At the same time, a spring attached to the seat retainer or the body is attached to the pressing part of the emergency seat ring to press and support the spacer, and press the seat retainer to make sealing contact with the ball surface. A valve seat emergency sealing device, characterized in that a spring for sealing the valve seat is attached to the body separately from the spring.