JPH0449274U - - Google Patents

Description

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

第１図は本考案の一実施例における緊急遮断弁
の全体断面図、第２図は本考案の他の実施例にお
ける緊急開放弁の全体構成図、第３図は従来の耐
震貯水槽に対する配管図、第４図は従来の緊急遮
断弁を示す全体断面図、第５図は従来の緊急開放
弁を示す全体断面図、第６図は従来のパイロツト
回路Ａの配管図である。 ５２，８２……弁箱、５６，８６……弁体、５
７，９６……スプリング、５８，８７……圧力室
、５９，９８……導管、６０，９９……逆止弁、
６４，９５……ピストン、６５，９７……流体貯
留室、６６，８８……パイロツト管。 Fig. 1 is an overall sectional view of an emergency shutoff valve in one embodiment of the present invention, Fig. 2 is an overall configuration diagram of an emergency release valve in another embodiment of the invention, and Fig. 3 is a conventional piping for an earthquake-resistant water tank. 4 is an overall sectional view showing a conventional emergency shutoff valve, FIG. 5 is an overall sectional view showing a conventional emergency release valve, and FIG. 6 is a piping diagram of a conventional pilot circuit A. 52, 82... Valve box, 56, 86... Valve body, 5
7,96...Spring, 58,87...Pressure chamber, 59,98...Conduit, 60,99...Check valve,
64, 95... Piston, 65, 97... Fluid storage chamber, 66, 88... Pilot tube.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 全開位置と全閉位置とに亙つて出退自在に設け
られた弁体と、弁体を出退方向に沿つて付勢する
スプリングと、弁箱の内部流路に連通して設けら
れ、内部空間に流入する被制御流体の流体圧力で
スプリングの付勢力に抗して弁体を付勢する圧力
室と、圧力室の伸縮に背反して伸縮するとともに
、内部空間に流入する被制御流体によつて弁体を
圧力室における流体圧力の付勢力に対向して保持
する流体貯留室と、流体貯留室と弁箱の内部流路
とを連通する導入管路の間に介装され、弁箱の内
部流路から流体貯留室への被制御流体の流通のみ
を許容する逆止弁とを備えたことを特徴とするロ
ツク機構付緊急開閉弁。 A valve body is provided so as to be freely retractable between a fully open position and a fully closed position, a spring biases the valve body in the direction of opening and retracting, and a spring is provided in communication with the internal flow path of the valve box. A pressure chamber that biases the valve body against the biasing force of the spring by the fluid pressure of the controlled fluid flowing into the space, and a pressure chamber that expands and contracts contrary to the expansion and contraction of the pressure chamber and the controlled fluid that flows into the internal space. Therefore, the valve body is interposed between the fluid storage chamber that holds the valve body against the biasing force of the fluid pressure in the pressure chamber, and the introduction pipe that communicates the fluid storage chamber with the internal flow path of the valve box. An emergency on-off valve with a locking mechanism, characterized in that it is equipped with a check valve that only allows flow of a controlled fluid from an internal flow path to a fluid storage chamber.