JPH0429175Y2 - - Google Patents
Info
- Publication number
- JPH0429175Y2 JPH0429175Y2 JP1982151110U JP15111082U JPH0429175Y2 JP H0429175 Y2 JPH0429175 Y2 JP H0429175Y2 JP 1982151110 U JP1982151110 U JP 1982151110U JP 15111082 U JP15111082 U JP 15111082U JP H0429175 Y2 JPH0429175 Y2 JP H0429175Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- diaphragm
- piston
- valve body
- bullet
- 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 10
- 238000013459 approach Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
Landscapes
- Fluid-Driven Valves (AREA)
- Regulation And Control Of Combustion (AREA)
- Feeding And Controlling Fuel (AREA)
Description
【考案の詳細な説明】
この考案は自動閉塞弁に関するもので、特に、
都市ガスなどの流体を使用する端末に設け、非常
時等に本管を閉塞すると自動的に端末での供給を
遮断できるようにした自動閉塞弁に関するもので
ある。[Detailed description of the invention] This invention relates to an automatic occlusion valve, and in particular,
This invention relates to an automatic shutoff valve that is installed at a terminal that uses fluid such as city gas, and is capable of automatically shutting off the supply at the terminal when the main pipe is blocked in an emergency.
災害時に都市ガスの迅速確実な遮断処置を講ず
べき種々の機器が研究、開発され、かつ、提供さ
れていることは周知である。これらの多くは、都
市ガスを使用する端末である各家庭等におけるガ
ス管の元栓を閉じる工夫についてなされている。
しかして、都市ガスに関して災害時等における最
も迅速な遮断処置は、都市ガスの供給源を遮断す
ることである。そうすれば、各家庭等端末での元
栓閉鎖の必要性を強調するよりも極めて迅速に安
全な処置ができるというものである。 2. Description of the Related Art It is well known that various devices have been researched, developed, and provided for quickly and reliably shutting off city gas in the event of a disaster. Many of these efforts have been made to close the main valve of the gas pipe in each home, which is the terminal that uses city gas.
Therefore, the quickest shut-off measure for city gas in the event of a disaster or the like is to shut off the supply source of city gas. By doing so, it would be possible to take much quicker and safer measures than emphasizing the need to close the main valve at each home terminal.
そこで、実開昭54−88932号公報によれば、流
体供給管路の消費端末に接続され、流体供給時は
その内圧でダイヤフラムが作動して弁体を開く一
方、流体供給遮断時は弾機の付勢力でダイヤフラ
ムが作動して弁体を閉じるようにした圧力低下安
全器（自動閉塞弁）が提供されている。 Therefore, according to Japanese Utility Model Application Publication No. 54-88932, the diaphragm is connected to the consumption end of the fluid supply pipe, and when fluid is supplied, the internal pressure operates to open the valve body, while when the fluid supply is cut off, the valve body is opened. A pressure drop safety device (automatic closing valve) is provided in which a diaphragm is actuated by the biasing force of 2 to close a valve body.
しかしながら、この公開公報記載の考案によれ
ば、構造が複雑であつて、組付精度や品質管理が
高く要求され、かつ、大型化し、コスト上昇をも
たらす不都合がある。 However, according to the invention described in this publication, the structure is complicated, requires high assembly accuracy and quality control, and is disadvantageous in that it becomes large and increases costs.
そこで、この考案は上記公開公報記載の考案が
有する上記欠点を解決するために、流体供給管路
の消費端末に接続され、流体供給時はその内圧で
ダイヤフラムが作動して弁体を開く一方、流体供
給遮断時は弾機の付勢力でダイヤフラムが作動し
て弁体を閉じるようにした自動閉塞弁において、
前記ダイヤフラムと弁体を結ぶ弁棒に軸方向中空
のシリンダを形成し、該シリンダ内にピストンを
嵌挿し、該ピストンのピストンロツドをダイヤフ
ラム上部の大気に連通可能な室内に延伸するとと
もに、ストツプ弁を設けて該室を開閉可能に弾機
で付勢し、かつ、前記ピストンが接離して開閉す
る連通孔を弁棒及び弁体に形成したことを特徴と
する自動閉塞弁を構成したものである。 Therefore, in order to solve the above-mentioned drawbacks of the invention described in the above-mentioned publication, this invention is connected to the consumption end of the fluid supply pipe, and when fluid is supplied, the diaphragm is actuated by its internal pressure to open the valve body, When the fluid supply is cut off, the diaphragm is operated by the biasing force of the bullet to close the valve body.
An axially hollow cylinder is formed on the valve rod connecting the diaphragm and the valve body, a piston is inserted into the cylinder, the piston rod of the piston is extended into a chamber above the diaphragm that can communicate with the atmosphere, and a stop valve is formed. The self-closing valve is characterized in that the valve stem and the valve body are provided with a communication hole, which is biased by a bullet so that the chamber can be opened and closed, and the valve stem and valve body are formed with a communication hole through which the piston approaches and separates to open and close. .
以下この考案を図示の実施例により説明する。 This invention will be explained below with reference to illustrated embodiments.
第１図において、１は流入側ポート、２は流出
側ポートであつて、それぞれガス管等の管路に接
続される。３は弁ケースで、この内部に管路を開
閉する弁体４が弁座５に接離可能に設けられてい
る。そして、弁ケース３内には、ダイヤフラム６
が設けられ、このダイヤフラム６に一端が連結さ
れ、他端が前記弁体４に連結された弁棒７が設け
られている。弁棒７は軸方向中空のシリンダ８を
備え、そのシリンダ８内にはピストン９が嵌挿さ
れている。このピストン９のピストンロツド１０
は、弁ケース蓋１１の貫通孔１２を出て外方に伸
びるとともに、弁ケース蓋１１の外部方向へ付勢
されるように、コイルスプリングなどの弾機１３
を備え、かつ、弁ケース蓋１１の貫通孔１２を閉
塞するストツプ弁１４を備えている。１５はピス
トンロツド１０の突出端に取付けた把手、１６は
安全カバーで着脱自在である。 In FIG. 1, 1 is an inflow side port, and 2 is an outflow side port, each of which is connected to a conduit such as a gas pipe. Reference numeral 3 denotes a valve case, in which a valve body 4 for opening and closing a pipeline is provided so as to be movable toward and away from a valve seat 5. Inside the valve case 3 is a diaphragm 6.
A valve rod 7 is provided, one end of which is connected to the diaphragm 6, and the other end of which is connected to the valve body 4. The valve rod 7 includes an axially hollow cylinder 8, into which a piston 9 is fitted. Piston rod 10 of this piston 9
extends outward from the through hole 12 of the valve case lid 11, and has an elastic spring 13 such as a coil spring so as to be biased toward the outside of the valve case lid 11.
and a stop valve 14 that closes the through hole 12 of the valve case lid 11. Reference numeral 15 is a handle attached to the protruding end of the piston rod 10, and reference numeral 16 is a safety cover which is detachable.
一方、ダイヤフラム６は弁座５の方向へ付勢さ
れる弾機１７を備えている。そして、弁棒７には
前記シリンダ８の内部で軸方向の側溝１８を形成
し、かつ、シリンダ８の内部と連通する側孔１９
を形成し、更に、該側孔１９をピストン９にて開
閉できるように側溝１８と側孔１９間にパツキン
２０を介在させ、該パツキン２０にピストン９の
ヘツドが接離するようにしてある。 On the other hand, the diaphragm 6 is provided with a bullet 17 that is biased toward the valve seat 5. A side groove 18 in the axial direction is formed in the valve stem 7 inside the cylinder 8, and a side hole 19 communicating with the inside of the cylinder 8 is formed in the valve stem 7.
Further, a packing 20 is interposed between the side groove 18 and the side hole 19 so that the side hole 19 can be opened and closed by the piston 9, and the head of the piston 9 comes into contact with and separates from the packing 20.
また、弁ケース蓋１１に穿設した排気孔２１を
ダイヤフラム６の動作時に閉じ、非動作時にはダ
イヤフラム６に押されて開放する排気弁２２が設
けられている。この排気弁２２は弾機２３にて付
勢され、弾機２３はガス供給圧よりも大きい力が
与えられている。また、２４は安全カバーであ
る。 Further, an exhaust valve 22 is provided, which closes an exhaust hole 21 formed in the valve case lid 11 when the diaphragm 6 is in operation, and opens it by being pushed by the diaphragm 6 when the diaphragm 6 is not in operation. This exhaust valve 22 is urged by a bullet 23, and the bullet 23 is given a force greater than the gas supply pressure. Further, 24 is a safety cover.
なお、排気弁２２は図示とは逆の内圧にて閉塞
するタイプの逆止弁であつてもよい。 Note that the exhaust valve 22 may be a check valve of a type that closes at an internal pressure opposite to that shown in the drawing.
次にこの考案の作用を説明する。 Next, the operation of this invention will be explained.
第３図に示す如く、ガス使用の端末２５、計量
器２６の手前において、元栓２８との間における
管路２９に前記に自動閉塞弁２７を介設する。そ
こで、ガス供給源３１の主開閉弁３０が開かれ
て、管路２９にガスが流れ端末２５側の元栓２８
が開かれると、端末２５でのガス使用が可能にな
る。自動閉塞弁２７は第１図に示すように、弾機
１７の力に打勝つガスの供給圧にて弁体４を弁座
５から離れさせ、流入側ポート１から流出側ポー
ト２にガスが流れる。一方、緊急、災害時等にお
いて、主開閉弁３０を閉じると、自動閉塞弁２７
の弾機１７の力が内圧に打勝つてダイヤフラム６
が動作し、第２図に示すように弁体４を弁座５に
接触させ、ガスの流路を遮断する。そして、主開
閉弁３０が再び開かれると流入側ポート１の内圧
が高くなるが、弁棒７の側孔１９と側溝１８とが
連通し、シリンダ８はダイヤフラム６の他側に開
いているため、ダイヤフラム６の両面が等圧で均
衡しても、弾機１７の力が作用しても、ダイヤフ
ラム６はなお弁体４を弁座５に押圧したままであ
る。そこで、安全カバー１６を外して把手１５を
手動で弾機１３の力に抗して押込むと、ピストン
９のヘツドがパツキン２０と接触して、側孔１９
と側溝１８との連通を断つ。このとき、弁棒７は
押込まれているから、ストツプ弁１４は弁ケース
蓋１１から離れ、その貫通孔１２からダイヤフラ
ム６と弁ケース蓋１１内のガスが外部に脱出す
る。したがつて、弾機１７側の内圧が低下してガ
スの供給圧が打勝つので、ダイヤフラム６が弾機
１７の力に抗して弁体４を弁座５から離す如く動
作する。そして、把手１５を押込む力を解くと、
弁棒７の動作に伴つて弾機１３の付勢方向へピス
トンロツド１０が動作し、かつ、ストツプ弁１４
が弁ケース蓋１１と接触する第１図の状態に戻る
ものである。 As shown in FIG. 3, an automatic shutoff valve 27 is interposed in a conduit 29 between the gas usage terminal 25 and the main stopcock 28 before the gas usage terminal 25 and the meter 26. Therefore, the main on-off valve 30 of the gas supply source 31 is opened, and gas flows through the pipe line 29 to the main valve 28 on the terminal 25 side.
When opened, gas usage at terminal 25 is enabled. As shown in FIG. 1, the automatic closing valve 27 separates the valve body 4 from the valve seat 5 with the gas supply pressure that overcomes the force of the bullet 17, and gas flows from the inlet port 1 to the outlet port 2. flows. On the other hand, in an emergency or disaster, when the main on-off valve 30 is closed, the automatic shut-off valve 27
The force of the bullet 17 overcomes the internal pressure and the diaphragm 6
is operated to bring the valve body 4 into contact with the valve seat 5 as shown in FIG. 2, thereby blocking the gas flow path. When the main on-off valve 30 is opened again, the internal pressure of the inflow side port 1 increases, but since the side hole 19 of the valve stem 7 and the side groove 18 are in communication and the cylinder 8 is open to the other side of the diaphragm 6. Even if both sides of the diaphragm 6 are balanced with equal pressure, the diaphragm 6 will still press the valve body 4 against the valve seat 5 even if the force of the bullet 17 is applied. Therefore, when the safety cover 16 is removed and the handle 15 is manually pushed in against the force of the bullet 13, the head of the piston 9 comes into contact with the packing 20, and the side hole 19
The communication with the gutter 18 is cut off. At this time, since the valve stem 7 is pushed in, the stop valve 14 separates from the valve case lid 11, and the gas inside the diaphragm 6 and the valve case lid 11 escapes to the outside through the through hole 12. Therefore, the internal pressure on the bomber 17 side decreases and the gas supply pressure overcomes it, so the diaphragm 6 operates to move the valve body 4 away from the valve seat 5 against the force of the bomber 17. Then, when the force of pushing the handle 15 is released,
As the valve rod 7 moves, the piston rod 10 moves in the direction of biasing the bullet 13, and the stop valve 14
The valve case returns to the state shown in FIG.
なお、排気弁２２はダイヤフラム６が復帰され
るとき押圧して弁ケース蓋１１内圧を大気に開放
し、その内部の少量のガスを排出するが、弁体４
が閉じているときはガスを漏洩させることはな
い。 Note that the exhaust valve 22 is pressed when the diaphragm 6 is returned to release the internal pressure of the valve case lid 11 to the atmosphere, and exhausts a small amount of gas inside.
When closed, no gas leaks.
以上記載した本考案によれば、ダイヤフラムと
弁体を結ぶ弁棒に軸方向中空のシリンダを形成
し、該シリンダ内にピストンを嵌挿し、該ピスト
ンのピストンロツドをダイヤフラム上部の大気に
連通可能な室内に延伸するとともに、ストツプ弁
を設けて該室を開閉可能に弾機で付勢し、かつ、
前記ピストンが接離して開閉する連通孔を弁棒及
び弁体に形成したので、構造が簡単で小型化が図
れると共に、安価に提供できる、等の効果があ
る。 According to the present invention described above, an axially hollow cylinder is formed in the valve rod connecting the diaphragm and the valve body, a piston is inserted into the cylinder, and the piston rod of the piston is placed in a chamber above the diaphragm that can communicate with the atmosphere. and a stop valve is provided and the chamber is energized by a bomb so as to be able to open and close, and
Since the communicating hole through which the piston moves toward and away from the valve stem and valve body is formed in the valve stem and the valve body, the structure is simple and compact, and the valve can be provided at low cost.
図面はこの考案の一実施例を示し、第１図は開
弁状態の、第２図は閉弁状態の中央縦断面図、第
３図はこの考案を都市ガス供給管路に適用した例
を示す管路構成図である。
１……流入側ポート、２……流出側ポート、３
……弁ケース、４……弁体、５……弁座、６……
ダイヤフラム、７……弁棒、８……シリンダ、９
……ピストン、１０……ピストンロツド、１１…
…弁ケース蓋、１２……貫通孔、１３，１７……
弾機、１４……ストツプ弁、１５……把手、１６
……安全カバー、１８……側溝、１９……側孔、
２０……パツキン。
The drawings show one embodiment of this invention; Fig. 1 is a central longitudinal cross-sectional view of the valve in the open state, Fig. 2 is a central longitudinal cross-sectional view of the valve in the closed state, and Fig. 3 is an example in which this invention is applied to a city gas supply pipeline. FIG. 1... Inflow side port, 2... Outflow side port, 3
...Valve case, 4...Valve body, 5...Valve seat, 6...
Diaphragm, 7...Valve stem, 8...Cylinder, 9
...Piston, 10...Piston rod, 11...
...Valve case lid, 12...Through hole, 13, 17...
Bullet machine, 14...Stop valve, 15...Handle, 16
... Safety cover, 18 ... Side gutter, 19 ... Side hole,
20...Patsukin.
Claims (1)
時はその内圧でダイヤフラムが作動して弁体を開
く一方、流体供給遮断時は弾機の付勢力でダイヤ
フラムが作動して弁体を閉じるようにした自動閉
塞弁において、前記ダイヤフラムと弁体を結ぶ弁
棒に軸方向中空のシリンダを形成し、該シリンダ
内にピストンを嵌挿し、該ピストンのピストンロ
ツドをダイヤフラム上部の大気に連通可能な室内
に延伸するとともに、ストツプ弁を設けて該室を
開閉可能に弾機で付勢し、かつ、前記ピストンが
接離して開閉する連通孔を弁棒及び弁体に形成し
たことを特徴とする自動閉塞弁。 It is connected to the consumption terminal of the fluid supply pipe, and when fluid is supplied, the diaphragm is actuated by its internal pressure to open the valve body, while when the fluid supply is cut off, the diaphragm is actuated by the biasing force of the bullet and closes the valve body. In the automatic shutoff valve, an axially hollow cylinder is formed in the valve stem connecting the diaphragm and the valve body, a piston is inserted into the cylinder, and the piston rod of the piston is placed in a chamber above the diaphragm that can communicate with the atmosphere. The automatic closing is characterized in that a stop valve is provided and the chamber is biased by a bullet so that the chamber can be opened and closed, and a communicating hole is formed in the valve stem and the valve body, through which the piston approaches and separates to open and close. valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15111082U JPS5956470U (en) | 1982-10-05 | 1982-10-05 | automatic occlusion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15111082U JPS5956470U (en) | 1982-10-05 | 1982-10-05 | automatic occlusion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5956470U JPS5956470U (en) | 1984-04-13 |
| JPH0429175Y2 true JPH0429175Y2 (en) | 1992-07-15 |
Family
ID=30334953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15111082U Granted JPS5956470U (en) | 1982-10-05 | 1982-10-05 | automatic occlusion valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5956470U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020187925A (en) * | 2019-05-15 | 2020-11-19 | アイシン精機株式会社 | Fuel cell system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5488932U (en) * | 1977-12-08 | 1979-06-23 |
-
1982
- 1982-10-05 JP JP15111082U patent/JPS5956470U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5956470U (en) | 1984-04-13 |
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