JPS6357696B2 - - Google Patents
Info
- Publication number
- JPS6357696B2 JPS6357696B2 JP56095799A JP9579981A JPS6357696B2 JP S6357696 B2 JPS6357696 B2 JP S6357696B2 JP 56095799 A JP56095799 A JP 56095799A JP 9579981 A JP9579981 A JP 9579981A JP S6357696 B2 JPS6357696 B2 JP S6357696B2
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- valve
- seat
- receiving seat
- emergency shutoff
- 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.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims description 16
- 238000011144 upstream manufacturing Methods 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/247—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using mechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/14—Fail safe for earthquakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/16—Fail safe using melting materials or shape memory alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/18—Detecting fluid leaks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2233/00—Ventilators
Landscapes
- Engineering & Computer Science (AREA)
- Safety Valves (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Combustion (AREA)
- Gas Burners (AREA)
- Temperature-Responsive Valves (AREA)
Description
【発明の詳細な説明】
本発明は、地震や火災などの緊急時に都市ガス
などの流体の流通を遮断する緊急遮断弁に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emergency shutoff valve that shuts off the flow of fluid such as city gas in the event of an emergency such as an earthquake or fire.
従来から、地震時に流体の流通を自動的に緊急
遮断するいわゆる感震弁が実用化されているが、
火災時に自動的に緊急遮断する弁は実現していな
い。また、地震、火災、ガス漏れや過流速発生時
に自動的に緊急遮断する多機能を有した緊急遮断
弁も実現しておらず、そのような弁があれば便利
であろう。 So-called earthquake-sensing valves have been put into practical use to automatically shut off fluid flow in the event of an earthquake.
A valve that automatically shuts off the system in the event of a fire has not yet been realized. Furthermore, there has not been a multifunctional emergency shutoff valve that automatically shuts off the system in the event of an earthquake, fire, gas leak, or excessive flow rate, and such a valve would be convenient.
本発明は、上述の観点に基づいて成されたもの
で、地震、火災、ガス漏れや過流速発生時にそれ
ぞれ自動的に遮断する多機能を有した緊急遮断弁
を提供することを目的とする。 The present invention has been made based on the above-mentioned viewpoints, and an object of the present invention is to provide a multifunctional emergency shutoff valve that automatically shuts off the valve in the event of an earthquake, fire, gas leak, or excessive flow rate.
以下、図面によつて本発明の実施例を説明す
る。第１図は本発明の一実施例の断面図である。
この緊急遮断弁１は、流体たとえば都市ガスを供
給する管路２，３の間に介装される。緊急遮断弁
１が設けられた地域で地震や火災が発生したり、
あるいは流体流路４を流通する都市ガス量が異常
に増大して過流速が発生したりした緊急時には、
弁体５が弁座６上に落下して弁孔７が塞がれる。
また、ガス漏れが発生したり、あるいは他の地域
において火災が発生して都市ガスの供給を停止し
なければならないときにも、弁孔７は弁体５によ
つて塞がれる。 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of an embodiment of the present invention.
This emergency shutoff valve 1 is interposed between pipes 2 and 3 that supply a fluid such as city gas. If an earthquake or fire occurs in the area where emergency shutoff valve 1 is installed,
Or, in an emergency when the amount of city gas flowing through the fluid flow path 4 increases abnormally and an excessive flow rate occurs,
The valve body 5 falls onto the valve seat 6 and the valve hole 7 is closed.
Further, the valve hole 7 is closed by the valve body 5 when a gas leak occurs or a fire breaks out in another area and the supply of city gas has to be stopped.
緊急遮断弁１の弁本体８は、上部が開放した金
属製ケーシング９と、そのケーシング９の上部開
放端に気密的に螺合される金属製蓋１０とを含
む。ケーシング９に蓋１０を螺合した状態で、弁
本体８内には管路２，３間を連通する流体流路４
が形成される。流体流路４の途中において、ケー
シング９の底部９ａには上方に突出した突部１１
が形成される。突部１１には上下に延びる収納穴
１２が形成されており、この収納穴１２にはコイ
ル状の付勢部材１３が収納される。付勢部材１３
は形状記憶金属から成り、予め定めた温度に達し
たときに伸長する性質を有する。 The valve body 8 of the emergency shutoff valve 1 includes a metal casing 9 with an open top, and a metal lid 10 hermetically screwed onto the top open end of the casing 9. With the lid 10 screwed onto the casing 9, there is a fluid flow path 4 in the valve body 8 that communicates between the pipes 2 and 3.
is formed. In the middle of the fluid flow path 4, the bottom 9a of the casing 9 has a protrusion 11 that protrudes upward.
is formed. A storage hole 12 extending vertically is formed in the protrusion 11, and a coil-shaped biasing member 13 is stored in the storage hole 12. Biasing member 13
is made of shape memory metal and has the property of elongating when a predetermined temperature is reached.
突部１１の上部には、収納穴１２の開放端が臨
む受け座１４が形成される。矢符１５で示す都市
ガスの流通方向に沿つて、受け座１４の上流側の
部分１４ａは上方に延設される。このような受け
座１４上には球状の弁体５が載置される。弁体５
の受け座１４上に載置した状態で、収納穴１２の
軸線は弁体５の中心にほぼ一致しており、しかも
付勢部材１３の上端部は弁体５の下面に当接して
いる。 A receiving seat 14 is formed at the upper part of the protrusion 11 and faces the open end of the storage hole 12. The upstream portion 14a of the receiving seat 14 extends upward along the city gas distribution direction indicated by the arrow 15. A spherical valve body 5 is placed on such a receiving seat 14. Valve body 5
When placed on the receiving seat 14, the axis of the housing hole 12 substantially coincides with the center of the valve body 5, and the upper end of the biasing member 13 is in contact with the lower surface of the valve body 5.
突部１１の前記流通方向１５に沿う下流側に
は、上下に延びる弁孔７が形成される。弁座６は
弁孔７を外囲して上流側に臨んで形成され、球状
の弁体５を受けるべく下方に向けて小径となる逆
円錐状に形成される。この弁座６は前記受け座１
４よりも下方に位置される。 A valve hole 7 extending vertically is formed on the downstream side of the protrusion 11 along the flow direction 15. The valve seat 6 is formed so as to surround the valve hole 7 and face the upstream side, and is formed in an inverted conical shape whose diameter decreases downward to receive the spherical valve body 5. This valve seat 6 is the receiving seat 1
It is located below 4.
突部１１には、収納穴１２を外囲してヒータ１
６が埋設される。なおヒータ１６としては金属製
ケーシング９との電気的絶縁を図るべくシースヒ
ータが用いられる。ヒータ１６の両端は電源を含
む電力付勢手段１７に接続される。火災を検知す
る検知器１８は、適宜位置に配置されており、検
知器１８からの検出信号は制御手段１９に入力さ
れる。制御手段１９は、検知器１８が火災を検知
したときの検出信号に応じて、電力付勢手段１７
を能動化し、それに応じてヒータ１６が電力付勢
される。なお、検知器１８としてはガス漏れを検
知する検知器であつてもよい。 The protrusion 11 has a heater 1 surrounding the storage hole 12.
6 is buried. Note that a sheath heater is used as the heater 16 in order to achieve electrical insulation from the metal casing 9. Both ends of the heater 16 are connected to power energizing means 17 including a power source. A detector 18 for detecting fire is placed at an appropriate position, and a detection signal from the detector 18 is input to a control means 19. The control means 19 controls the power energizing means 17 in response to a detection signal when the detector 18 detects a fire.
, and the heater 16 is energized accordingly. Note that the detector 18 may be a detector that detects gas leakage.
このように構成された緊急遮断弁１において、
地震が発生したときを想定する。地震が発生する
と、その震動によつて弁体５は受け座１４上から
弁座６上に落下する。したがつて、地震発生後、
直ちに弁孔７が塞がれて、都市ガスの流通が緊急
遮断される。なお、受け座１４の上流側部分１４
ａは上方に延びているので、弁体５が流通方向１
５に沿つて上流側に落下することはない。 In the emergency shutoff valve 1 configured in this way,
Suppose an earthquake occurs. When an earthquake occurs, the vibration causes the valve body 5 to fall from above the catch seat 14 onto the valve seat 6. Therefore, after an earthquake occurs,
The valve hole 7 is immediately blocked, and the flow of city gas is urgently cut off. Note that the upstream portion 14 of the receiving seat 14
a extends upward, so that the valve body 5 is in the flow direction 1.
It will not fall upstream along the line 5.
緊急遮断弁１が設けられている近傍において、
火災が発生した場合を想定する。この場合には、
緊急遮断弁１の近傍における雰囲気温度が予め定
めた或る一定の値に達すると、付勢部材１３が瞬
時的に伸長し、その付勢部材１３に押圧されて弁
体５が弁座６上に落下する。したがつて弁孔７が
塞がれて都市ガスの流通が停止される。なお、検
知器１８が配置されている近傍で火災が発生した
とき、あるいはガス漏れが生じたときには、ヒー
タ１６が電力付勢される。このヒータ１６の電力
付勢に応じて付勢部材１３が昇温し、前述と同様
に或る一定温度に達したときに付勢部材１３が伸
長して弁体５が弁座６上に落下する。したがつ
て、都市ガスの流通が停止される。 In the vicinity where the emergency shutoff valve 1 is provided,
Assume that a fire occurs. In this case,
When the ambient temperature near the emergency shutoff valve 1 reaches a certain predetermined value, the biasing member 13 expands instantaneously, and the valve body 5 is pushed onto the valve seat 6 by being pressed by the biasing member 13. to fall. Therefore, the valve hole 7 is closed and the flow of city gas is stopped. Note that when a fire occurs or a gas leak occurs near where the detector 18 is located, the heater 16 is energized. The temperature of the biasing member 13 rises in response to the electric power biasing of the heater 16, and when the temperature reaches a certain temperature as described above, the biasing member 13 expands and the valve body 5 falls onto the valve seat 6. do. Therefore, the distribution of city gas will be suspended.
管路２から緊急遮断弁１を介して管路３へ流れ
る都市ガスの流通量が、管路３の途中における損
壊などによつて異常に増大し、流体流路４におけ
る流速が過大になつた場合を想定する。この場合
には、流体流路４における弁体５の上流および下
流間の圧力差が増大する。そのため、受け座１４
上の弁体５が前記圧力差によつて下流側に押圧さ
れて弁座６上に落下し、弁孔７が塞がれる。 The amount of city gas flowing from pipeline 2 to pipeline 3 via emergency shutoff valve 1 has increased abnormally due to damage in the pipeline 3, and the flow velocity in fluid channel 4 has become excessive. Assume a case. In this case, the pressure difference between the upstream and downstream sides of the valve body 5 in the fluid flow path 4 increases. Therefore, the strike plate 14
The upper valve body 5 is pressed downstream by the pressure difference and falls onto the valve seat 6, closing the valve hole 7.
上述のようにして、本件緊急遮断弁１によれ
ば、地震、火災、ガス漏れおよび過流速発生時に
都市ガスの流通が緊急遮断される。なお、緊急遮
断動作後、都市ガスの流通を再開するにあたつて
は、緊急遮断弁１よりも上流側における図示しな
い弁を閉弁した後、蓋１０を開いて弁体５を弁座
６から受け座１４上に持ち上げて載置する。次い
で、蓋１０を閉じて前記弁を開弁することによ
り、都市ガスの流通が再開される。 As described above, according to the present emergency shutoff valve 1, the distribution of city gas is urgently shut off in the event of an earthquake, fire, gas leak, or excessive flow rate. In addition, when restarting the distribution of city gas after the emergency shutoff operation, after closing the valve (not shown) upstream of the emergency shutoff valve 1, open the lid 10 and move the valve body 5 to the valve seat 6. Lift it up and place it on the receiving seat 14. Next, by closing the lid 10 and opening the valve, the flow of city gas is resumed.
第２図は本発明の他の実施例の断面図であり、
第１図の実施例に対応する部分には同一の参照符
を付す。この実施例では、収納穴１２の軸線２０
が、流通方向１５に沿つて受け座１４上の弁体５
の中心２１よりも距離ｌだけ上流側にずれた位置
に選ばれる。このようにすれば付勢部材１３の上
端部は前記中心２１よりも上流側にずれた位置で
弁体５の下面に当接する。そのため付勢部材１３
が伸長したときに、弁体５の下面は前記中心２１
よりも上流側で上方に向けて押圧される。したが
つて、第１図の実施例のように受け座１４の上流
側の部分１４ａを上方に延設することなく、弁体
５が弁座６上に確実に着座する。 FIG. 2 is a sectional view of another embodiment of the present invention,
Parts corresponding to the embodiment of FIG. 1 are given the same reference numerals. In this embodiment, the axis 20 of the storage hole 12
However, the valve body 5 on the receiving seat 14 along the flow direction 15
A position shifted upstream by a distance l from the center 21 of is selected. In this way, the upper end of the biasing member 13 comes into contact with the lower surface of the valve body 5 at a position shifted upstream from the center 21. Therefore, the biasing member 13
When the valve body 5 is expanded, the lower surface of the valve body 5 is located at the center 21.
It is pressed upward on the upstream side. Therefore, the valve body 5 is reliably seated on the valve seat 6 without extending the upstream portion 14a of the receiving seat 14 upward as in the embodiment shown in FIG.
本発明の他の実施例として、付勢部材１３を弁
体５の上流側に臨む面に当接するように設けても
よい。 As another embodiment of the present invention, the biasing member 13 may be provided so as to come into contact with the surface of the valve body 5 facing the upstream side.
第３図は本発明の他の実施例の断面図であり、
第４図は第３図の切断面線―から見た断面図
であり、前述の各実施例に対応する部分には同一
の参照符を付す。この実施例では、弁座６上の弁
体５を受け座１４上に復帰させる復帰手段２２が
設けられる。復帰手段２２は、弁座６および受け
座１４間で弁本体８を回転自在にかつ気密的に貫
通した駆動棒２３、弁座６上の弁体５の下部を受
けるための円形の受け部材２４、弁本体８の内方
で受け部材２４および駆動棒２３を連結する回動
アーム２５、ならびに弁本体８の外方で駆動棒２
３の端部に設けられたハンドル２６を含む。 FIG. 3 is a sectional view of another embodiment of the present invention,
FIG. 4 is a sectional view taken along the cutting plane line - in FIG. 3, and parts corresponding to each of the above-described embodiments are given the same reference numerals. In this embodiment, return means 22 for returning the valve body 5 on the valve seat 6 to the receiving seat 14 are provided. The return means 22 includes a drive rod 23 that rotatably and airtightly penetrates the valve body 8 between the valve seat 6 and the receiving seat 14, and a circular receiving member 24 for receiving the lower part of the valve body 5 on the valve seat 6. , a rotating arm 25 connecting the receiving member 24 and the drive rod 23 on the inside of the valve body 8, and a rotating arm 25 connecting the drive rod 23 on the outside of the valve body 8.
3 includes a handle 26 provided at the end thereof.
回動アーム２５および受け部材２４が第３図で
示すごとくほぼ水平の状態にあるときに、受け部
材２４は弁座６の上方に位置している。この状態
で、弁座６上に弁体５が落下してくると、弁体５
の下部は弁座６に着座する。しかもその弁体５の
前記着座位置よりもわずかに上方の部分は、受け
部材２４によつて受けられる。 When the rotating arm 25 and the receiving member 24 are in a substantially horizontal state as shown in FIG. 3, the receiving member 24 is located above the valve seat 6. In this state, if the valve body 5 falls onto the valve seat 6, the valve body 5
The lower part of the valve seat 6 is seated on the valve seat 6. Moreover, a portion of the valve body 5 slightly above the seating position is received by the receiving member 24.
弁体５を受け座１４上に復帰させるには、ハン
ドル２６を回転操作して、回動アーム２５を第３
図の二点鎖線で示すほぼ直立の状態にする。そう
すると、受け部材２４で受けられていた弁体５
は、その受け部材２４から外れて受け座１４上に
もたらされる。なお、受け座１４、弁座６および
駆動棒２３の各位置、ならびに回動アーム２５の
長さｌは、前述の回動操作によつて弁体５が弁座
６から受け座１４上にもたらすことができるよう
に選ばれている。 To return the valve body 5 to the receiving seat 14, rotate the handle 26 and move the rotating arm 25 to the third position.
Bring it into the almost upright position shown by the two-dot chain line in the figure. Then, the valve body 5 that was received by the receiving member 24
is removed from the receiving member 24 and brought onto the receiving seat 14. The positions of the catch seat 14, the valve seat 6, and the drive rod 23, as well as the length l of the rotating arm 25, are such that the valve body 5 is brought from the valve seat 6 onto the catch seat 14 by the above-mentioned rotating operation. It has been selected so that it can be
この実施例によれば、弁本体８に第１図および
第２図の実施例のごとく蓋１０を設けることな
く、弁体５を弁座６から受け座１４上に復帰させ
ることができて便利である。 According to this embodiment, the valve body 5 can be conveniently returned from the valve seat 6 onto the receiving seat 14 without providing the lid 10 on the valve body 8 as in the embodiments shown in FIGS. 1 and 2. It is.
なお、付勢部材１３は、前述の実施例のごとき
コイル状に限定されるものではなく、板ばね状で
あつてもよく、予め定めた温度に達したときに、
弁体５を受け座１４から下流側に付勢し得る形状
を有していればよい。 Note that the biasing member 13 is not limited to the coil shape as in the above-mentioned embodiments, but may be in the shape of a leaf spring, and when a predetermined temperature is reached,
It is sufficient that the valve body 5 has a shape that can urge the valve body 5 downstream from the receiving seat 14 .
上述の実施例では、都市ガスの流通を遮断する
緊急遮断弁について述べたが、本考案は気体や液
体などの流体に関連して広く実施されうる。 Although the above-mentioned embodiment describes an emergency shutoff valve that shuts off the flow of city gas, the present invention can be widely implemented in connection with fluids such as gas and liquid.
上述のごとく本発明によれば、弁体の流体通路
の途中に形成した受け座上に弁体を載置し、その
受け座の直下流における下方に弁座を形成したの
で、地震や過流速発生時に弁座上に弁体を落下さ
せて流体の流通を緊急遮断することができる。受
け座に臨んで開口した収納穴に形状記憶合金製コ
イルばねを収納したので、火災発生時にコイルば
ねの伸長動作により弁体を受け座から弁座上に落
下させて流体の流通を遮断することができる。 As described above, according to the present invention, the valve body is placed on a receiving seat formed in the middle of the fluid passage of the valve body, and the valve seat is formed directly downstream of the receiving seat, so that earthquakes and excessive flow speeds can be avoided. When this occurs, the valve body can be dropped onto the valve seat to urgently shut off fluid flow. Since a shape memory alloy coil spring is stored in the storage hole that opens facing the receiving seat, in the event of a fire, the valve body will fall from the receiving seat onto the valve seat due to the expansion action of the coil spring, thereby blocking fluid flow. Can be done.
第１図は本発明の一実施例の断面図、第２図は
本発明の他の実施例の断面図、第３図は本発明の
他の実施例の断面図、第４図は第３図の切断面線
―から見た断面図である。
１…緊急遮断弁、４…流体流路、５…弁体、６
…弁座、７…弁孔、８…弁本体、１１…突部、１
２…収納穴、１３…付勢部材、１４…受け座、１
６…ヒータ、１８…検知器、２０…収納穴１２の
軸線、２１…弁体５の中心。
1 is a sectional view of one embodiment of the present invention, FIG. 2 is a sectional view of another embodiment of the invention, FIG. 3 is a sectional view of another embodiment of the invention, and FIG. 4 is a sectional view of another embodiment of the invention. FIG. 1...Emergency shutoff valve, 4...Fluid flow path, 5...Valve body, 6
...Valve seat, 7...Valve hole, 8...Valve body, 11...Protrusion, 1
2...Storage hole, 13...Biasing member, 14...Socket seat, 1
6... Heater, 18... Detector, 20... Axis of storage hole 12, 21... Center of valve body 5.
Claims (1)
に受け座を有する突部が上下に延びて形成され、
前記受け座には球状の弁体が地震による震動ある
いは前記流体流路を流体が過剰に流れたときにお
ける弁体前後の圧力差によつて下流側に外れる状
態で載置され、弁本体には、形状記憶金属から成
り予め定めた温度に達したときに弁体を受け座か
ら下流側に外す方向に付勢する付勢部材が設けら
れ、前記突部よりも下流側には、前記弁体が着座
するための弁座が上流側に臨んで形成されること
を特徴とする緊急遮断弁。 ２ 前記突部には、前記受け座に開口端が臨む収
納穴が上下に延びて形成され、その収納穴には前
記付勢部材が弁体の下面に当接すべく収納される
ことを特徴とする特許請求の範囲第１項記載の緊
急遮断弁。 ３ 前記突部には収納穴を外囲するヒータが埋設
され、そのヒータは緊急状態を検出する検知器の
出力に応じて電力付勢されることを特徴とする特
許請求の範囲第２項記載の緊急遮断弁。 ４ 前記付勢部材と弁体下面との当接位置は、弁
体の中心よりも上流側にずれていることを特徴と
する特許請求の範囲第２項または第３項記載の緊
急遮断弁。[Claims] 1. A protrusion having a receiving seat at the upper part is formed in the middle of the fluid flow path formed in the valve body, extending vertically,
A spherical valve body is placed on the receiving seat in a state where it comes off downstream due to vibrations caused by an earthquake or a pressure difference between the front and rear of the valve body when fluid flows excessively through the fluid flow path. , a biasing member made of a shape memory metal that biases the valve body in a direction downstream from the receiving seat when the temperature reaches a predetermined temperature; An emergency shutoff valve characterized in that a valve seat for seating is formed facing upstream. 2. A storage hole is formed in the protrusion and extends vertically, and the opening end faces the receiving seat, and the biasing member is stored in the storage hole so as to come into contact with the lower surface of the valve body. An emergency shutoff valve according to claim 1. 3. A heater surrounding the storage hole is embedded in the protrusion, and the heater is energized according to the output of a detector that detects an emergency state. emergency shutoff valve. 4. The emergency shutoff valve according to claim 2 or 3, wherein the contact position between the biasing member and the lower surface of the valve body is shifted upstream from the center of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56095799A JPS57210221A (en) | 1981-06-20 | 1981-06-20 | Emergency intercepting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56095799A JPS57210221A (en) | 1981-06-20 | 1981-06-20 | Emergency intercepting valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57210221A JPS57210221A (en) | 1982-12-23 |
| JPS6357696B2 true JPS6357696B2 (en) | 1988-11-11 |
Family
ID=14147480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56095799A Granted JPS57210221A (en) | 1981-06-20 | 1981-06-20 | Emergency intercepting valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57210221A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6249079U (en) * | 1985-09-13 | 1987-03-26 | ||
| JPS639783A (en) * | 1986-06-30 | 1988-01-16 | Nippo Kinzoku Kogyo Kk | Safety device for fuse cock |
| CA1315175C (en) * | 1988-08-19 | 1993-03-30 | Geoffrey Frederick Foster | Automatic fluid flow shut-off device |
| GR1000453B (en) * | 1989-05-08 | 1992-07-30 | Spyros Prevezanos | Screening system of a boiler burner or industrial complexes using fuel and electric energy by explosion or fire |
| TWI227312B (en) * | 2003-12-31 | 2005-02-01 | Tzung-Shi Jang | Earthquake protection device |
| FR2869573B1 (en) | 2004-04-30 | 2006-06-16 | Conception Et Dev Michelin Sa | GASEOUS FUEL VEHICLE AND AUTOMATIC PURGE SYSTEM |
-
1981
- 1981-06-20 JP JP56095799A patent/JPS57210221A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57210221A (en) | 1982-12-23 |
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