JPS6411482U

JPS6411482U -

Info

Publication number: JPS6411482U
Application number: JP10629887U
Authority: JP
Priority date: 1987-07-13
Filing date: 1987-07-13
Publication date: 1989-01-20
Anticipated expiration: 2002-07-13
Also published as: JPH0740778Y2

Description

[Brief explanation of the drawing]

第１図は本考案に係る緊急遮断弁の断面図、第
２図は変形例の断面図である。１……緊急遮断弁、２……弁室、３……流入路
、４……流出路、５……弁座、６……弁箱、７…
…弁体、８……ばね、９……弁棒、１２……環状
溝（ラツチ装置）、１３……ボール（ラツチ装置
）、１４……スリーブ（切換素子）、１９……ラ
ツチばね、２０……ラツチ解除ばね、３３……押
え棒（切換素子）。 FIG. 1 is a sectional view of an emergency shutoff valve according to the present invention, and FIG. 2 is a sectional view of a modified example. 1...Emergency shutoff valve, 2...Valve chamber, 3...Inflow path, 4...Outflow path, 5...Valve seat, 6...Valve box, 7...
... Valve body, 8 ... Spring, 9 ... Valve stem, 12 ... Annular groove (latch device), 13 ... Ball (latch device), 14 ... Sleeve (switching element), 19 ... Latch spring, 20 ...Latch release spring, 33...Press bar (switching element).

補正昭６３．９．２７実用新案登録請求の範囲を次のように補正する
。Amendment September 27, 1986 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】弁室と、該弁室に連通する流入路及び流出路と
、前記弁室と流入路との間に形成された弁座とを
有する弁箱を備え、前記弁室内に前記弁座に対し
離接動可能に配置された弁体と、該弁体を前記弁
座に押圧するばねと、前記弁体に取付けられ前記
弁箱を貫通し手で引上げ可能な弁棒と、前記弁体
を開弁位置に保持するラツチ装置とを有する緊急
遮断弁において、前記ラツチ装置が、前記弁棒を係合保持する非
作動位置と、前記弁棒の係合を解除する作動位置
との間を移動可能な切換素子と、該切換素子に非
作動位置へ押圧する力を付勢するラツチばねと、
該ラツチばねとは反対方向の力を前記切換素子に
付勢するラツチ解除ばねとを有し、該ラツチ解除
ばねが形状記憶合金よりなり、常時は縮まつてお
り、温度上昇に従つて所定長さまで伸張可能なば
ねとして形成されていることを特徴とする緊急遮
断弁。[Claims for Utility Model Registration] A valve box having a valve chamber, an inflow passage and an outflow passage communicating with the valve chamber, and a valve seat formed between the valve chamber and the inflow passage; A valve body disposed in a room so as to be movable toward and away from the valve seat, a spring that presses the valve body against the valve seat, and a valve that is attached to the valve body and that penetrates the valve body and can be pulled up by hand. An emergency shutoff valve having a rod and a latching device that holds the valve stem in an open position, the latching device including a non-stop that engages and holds the valve stem.
a switching element movable between an actuated position and an actuated position for disengaging said valve stem;
a latch spring that applies a force to push it into the operating position;
and a latch release spring that applies a force in the opposite direction to the switching element, and the latch release spring is made of a shape memory alloy and is normally contracted and contracts to a predetermined length as the temperature rises. An emergency shutoff valve, characterized in that it is configured as a spring that can be expanded in the opposite direction.

Claims

[Claims for Utility Model Registration] A valve box having a valve chamber, an inflow passage and an outflow passage communicating with the valve chamber, and a valve seat formed between the valve chamber and the inflow passage; A valve body disposed in a room so as to be movable toward and away from the valve seat, a spring that presses the valve body against the valve seat, and a valve that is attached to the valve body and that penetrates the valve body and can be pulled up by hand. An emergency shutoff valve having a rod and a latching device that holds the valve body in an open position, the latching device having an operative position that engages and holds the valve stem, and an unengaged position that disengages the valve stem. a switching element movable to and from an actuated position; a latch spring that applies a force to the switching element toward the actuated position; and a delatching element that applies a force to the switching element in a direction opposite to the latch spring. 1. An emergency shutoff valve comprising a spring, wherein the latch release spring is made of a shape memory alloy, and is formed as a spring that is normally compressed and can be expanded to a predetermined length as the temperature rises.