JPS6235173U - - Google Patents

Info

Publication number
JPS6235173U
JPS6235173U JP12723285U JP12723285U JPS6235173U JP S6235173 U JPS6235173 U JP S6235173U JP 12723285 U JP12723285 U JP 12723285U JP 12723285 U JP12723285 U JP 12723285U JP S6235173 U JPS6235173 U JP S6235173U
Authority
JP
Japan
Prior art keywords
valve
piston
air supply
pilot
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP12723285U
Other languages
Japanese (ja)
Other versions
JPH0643589Y2 (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1985127232U priority Critical patent/JPH0643589Y2/en
Publication of JPS6235173U publication Critical patent/JPS6235173U/ja
Application granted granted Critical
Publication of JPH0643589Y2 publication Critical patent/JPH0643589Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Fluid-Driven Valves (AREA)
  • Servomotors (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の第１実施例を示す開閉弁の制
御装置の概略縦断面図、第２図は第１図に示した
開閉弁の制御装置の弁閉鎖状態を示す概略縦断面
図、第３図から第５図はそれぞれ本考案の第２か
ら第４実施例を示す開閉弁の制御装置の概略縦断
面図、第６図から第８図は従来例を示し、第６図
は構造を説明するための断面図、第７図は弁開放
時の縦断面図、第８図は弁閉鎖時の縦断面図であ
る。 １…弁箱、２…弁座、３…シリンダ、４…弁ピ
ストン、５…ピストン軸、６…スプリング、７…
弁体、８…上部ピストン室、９…下部ピストン室
、１０，１０ａ…上部給気パイロツト弁、１１，
１１ａ…上部排気パイロツト弁、１２，１２ａ…
下部給気パイロツト弁、１３，１３ａ…下部排気
パイロツト弁、１４，１５，１６…後備給気パイ
ロツト弁、１７…流量制限器、１８，１９…後備
排気パイロツト弁。 1 is a schematic vertical sectional view of a control device for an on-off valve showing a first embodiment of the present invention; FIG. 2 is a schematic longitudinal sectional view showing the control device for an on-off valve shown in FIG. 1 in a valve closed state; 3 to 5 are schematic vertical cross-sectional views of the control device for the on-off valve showing the second to fourth embodiments of the present invention, FIGS. 6 to 8 show the conventional example, and FIG. 6 is the structure. FIG. 7 is a longitudinal sectional view when the valve is open, and FIG. 8 is a longitudinal sectional view when the valve is closed. 1...Valve box, 2...Valve seat, 3...Cylinder, 4...Valve piston, 5...Piston shaft, 6...Spring, 7...
Valve body, 8... Upper piston chamber, 9... Lower piston chamber, 10, 10a... Upper air supply pilot valve, 11,
11a... Upper exhaust pilot valve, 12, 12a...
Lower air supply pilot valve, 13, 13a... Lower exhaust pilot valve, 14, 15, 16... Backup air supply pilot valve, 17... Flow rate restrictor, 18, 19... Backup exhaust pilot valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 弁座を有する弁箱に連設したシリンダ内に配置
した弁ピストンと、この弁ピストンのピストン軸
に内挿したスプリングにて弁座に圧止させかつピ
ストン軸先端に設けられた弁体と、上記シリンダ
内における弁ピストン上下の上，下部ピストン室
内へ上記弁箱内で流動する流体の一部をそれぞれ
導く管路の途中に設けた上，下部給気パイロツト
弁と、弁ピストン上下の流体をそれぞれ排気する
管路の途中に設けた上，下部排気パイロツト弁と
、上記上，下部給気パイロツト弁の上記弁箱側に
設けられた後備給気パイロツト弁とから成ること
を特徴とする開閉弁の制御装置。 A valve piston disposed in a cylinder connected to a valve box having a valve seat; a valve body pressed against the valve seat by a spring inserted in the piston shaft of the valve piston and provided at the tip of the piston shaft; A pilot valve is installed in the middle of a pipe that guides a portion of the fluid flowing in the valve box above and below the valve piston into the upper and lower piston chambers, respectively, and a lower air supply pilot valve is installed in the middle of the pipe to guide the fluid above and below the valve piston. An on-off valve characterized by comprising upper and lower exhaust pilot valves provided in the middle of respective exhaust pipes, and a backup air supply pilot valve provided on the valve box side of the upper and lower air supply pilot valves. control device.
JP1985127232U 1985-08-22 1985-08-22 Controller for main steam isolation valve in nuclear power plant Expired - Lifetime JPH0643589Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985127232U JPH0643589Y2 (en) 1985-08-22 1985-08-22 Controller for main steam isolation valve in nuclear power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985127232U JPH0643589Y2 (en) 1985-08-22 1985-08-22 Controller for main steam isolation valve in nuclear power plant

Publications (2)

Publication Number Publication Date
JPS6235173U true JPS6235173U (en) 1987-03-02
JPH0643589Y2 JPH0643589Y2 (en) 1994-11-14

Family

ID=31021782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985127232U Expired - Lifetime JPH0643589Y2 (en) 1985-08-22 1985-08-22 Controller for main steam isolation valve in nuclear power plant

Country Status (1)

Country Link
JP (1) JPH0643589Y2 (en)

Also Published As

Publication number Publication date
JPH0643589Y2 (en) 1994-11-14

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