JPH07104730B2 - Pressure reduction and relief valve - Google Patents

Pressure reduction and relief valve

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Publication number
JPH07104730B2
JPH07104730B2 JP61036057A JP3605786A JPH07104730B2 JP H07104730 B2 JPH07104730 B2 JP H07104730B2 JP 61036057 A JP61036057 A JP 61036057A JP 3605786 A JP3605786 A JP 3605786A JP H07104730 B2 JPH07104730 B2 JP H07104730B2
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valve
pressure
relief valve
rod
side
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JPS62192813A (en
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有硯 上野
光進 福田
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エヌテーシー工業株式会社
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Publication of JPH07104730B2 publication Critical patent/JPH07104730B2/en
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【発明の詳細な説明】 [産業上の利用分野] 本発明は、二次圧を感知して作動する感圧板に、一次側と二次側との連通を開閉制御する減圧用弁を連繋して、 DETAILED DESCRIPTION OF THE INVENTION [FIELD OF THE INVENTION The present invention is sensitive plate which operates by sensing the secondary pressure, tandem pressure-reducing valve that controls the opening and closing of the communication between the primary side and the secondary side Te,
二次側の圧力を設定圧力内に保持するよう構成せる減圧弁に、二次側の異常な圧力の増大によりその圧力を逃す逃し弁を組子んだ減圧・逃し弁に関する。 A pressure reducing valve to configured to maintain the pressure of the secondary side into the set pressure, to pressure reduction and relief valve I muntin the relief valve miss its pressure by increasing abnormal pressure on the secondary side.

[従来の技術] ボイラー等の給湯施設の配管に接続して、一次側から供給される水または湯を、所定の設定圧力内に保持せしめて二次側に供給するように用いる減圧弁は、通常、二次側に異常な圧力が生じたときに、、その圧力を外部に逃す逃し弁と組合わせて用いられる。 And connected to a pipe of the prior art] hot water supply facility such as boilers, water or hot water is supplied from the primary side, a pressure reducing valve used to supply allowed by the secondary side held in a predetermined set pressure, Usually, ,, used in combination with relief valve miss the pressure to the outside when an abnormal pressure occurs in the secondary side. この二次側の圧力を設定圧力以下に制御するための減圧弁と二次側に生じた異常な圧力を外部に逃すための逃し弁とは、従前にあってはそれぞれ別個に製作され、使用の際に、それらを組合わせながら配管に各別に取付けるようにしている。 The secondary side relief valve for miss reducing valve and abnormal pressure generated in the secondary side to control below the set pressure pressure outside of, in the previously are respectively fabricated separately, using during, and to attach to each other in the pipe while combining them.

減圧弁と逃し弁とを一つの弁箱内に組込んだものとしては、例えば、実開昭58−54710号公報にあるように従来から知られているが、このものは、一次側の圧力をバイパス通路とそれを開閉する逃し弁とにより二次側に逃すようにしたもので、二次側に生じた圧力を外部に逃すようにしたものではない。 As incorporating a pressure reducing valve and relief valve in one of the valve in the box, for example, it has been known as in Japanese Unexamined Utility Model Publication No. 58-54710, this compound, the primary pressure the present invention which is adapted miss the secondary side by the bypass passage and relief valve for opening and closing it, does not have to miss the pressure generated in the secondary side to the outside. 二次側に異常な圧力が生じたときの対策としては、弁箱の底部で二次側と通ずる部位に、外部に通ずる連通孔を設け、これを水抜弁により開閉自在に閉鎖し、かつ、この水抜弁を閉鎖ばねにより閉弁側に付勢しておいて、その閉鎖ばねに設定したバネ圧力よりも高い圧力を、前記連通孔を介してその水抜弁が受けたときに、この水抜弁が二次側の異常な圧力を外部に逃す逃し弁として働くようにした構成のものである。 As a measure of when an abnormal pressure occurs in the secondary side, a portion communicating with the secondary side at the bottom of the valve body, the communicating hole leading to the outside is provided, which open and close freely closed by draining valve, and, the drainage valve had been urged in the valve closing side by a closing spring, a pressure higher than the spring pressure is set to the closing spring, when the water drainage valve is received through the communication hole, the water drain valve There is of structure in which to work as a relief valve miss an abnormal pressure on the secondary side to the outside.

[発明が解決しようとする課題] 上述の従前手段は、一次側から二次側に供給する湯・水の圧力を所定の設定圧力内に制御するための減圧弁と、 [0005] aforementioned conventional means, a pressure reducing valve for controlling the pressure of the hot water, water supplied from the primary side to the secondary side in a predetermined set pressure,
二次側に生じた異常な圧力を外部に逃す逃し弁とを、別々に作って、組合わせて配管に接続する手段にあっては、取付作業が面倒になる問題がある。 A relief valve miss outside an abnormal pressure generated in the secondary side, made separately, in the means for connecting the pipe in combination, there is a problem that the mounting work becomes troublesome. また、減圧弁の弁箱内に、一次側圧力を二次側に逃すバイパス通路とそれを開閉する逃し弁を組込む手段は、ボイラー等の給湯施設の配管に用いたときに、二次側に生じた異常な圧力を外部に逃して安全を確保する手段としては全く使用できない問題がある。 Further, in the valve box of the pressure reducing valve, means for incorporating the bypass passage and relief valve to open and close it miss primary pressure to the secondary side, when used in pipes of a hot water supply facility boiler etc., to the secondary side resulting is totally unusable problem as abnormal pressure means to ensure safety miss to the outside.

また、実開昭58−54710号公報にあるよう、弁箱の底部に、水抜弁を二次側に連通させて設け、この水抜弁を閉鎖ばねにより閉弁側に付勢して、二次側に生じた異常な圧力を外部に逃す逃し弁を兼ねたものとする手段は、二次側の圧力が水抜穴である連通孔を介して水抜弁に伝達されることで、水抜弁の二次側の圧力に対する受圧面積が著しく小さくなることから、二次側の圧力変化に応答する感度が鈍く、種々の不都合を生ぜしめる問題がある。 Further, as in Japanese Unexamined Utility Model Publication No. 58-54710, the bottom of the valve body, provided to communicate with the drainage valve to the secondary side, and biases the valve closing side The drainage valve by the closing spring, secondary It means to act as both a relief valve miss an abnormal pressure generated in the side to the outside, that the pressure in the secondary side is transmitted to the drainage valve via the communicating hole is a draining hole, the draining valve two since the pressure receiving area is significantly reduced relative to the pressure of the next side, dull sensitivity to respond to pressure changes in the secondary side, there is a problem of causing a variety of disadvantages. 即ち、減圧弁により設定される湯水の設定圧力を基準として、その設定圧力よりも二次側の圧力が高くなったときに、逃し弁が開弁するように閉鎖ばねのバネ圧を設定する際、逃し弁が開弁する圧力を減圧弁により設定される設定圧力に近づけるよう閉鎖ばねのバネを弱くすると、二次側の圧力が減圧弁により設定される設定圧力以下のときにこの逃し弁が開弁する場合が生じて、減圧弁の機能を損なうようになる。 That is, based on the hot water set pressure set by the pressure reducing valve, when the high pressure in the secondary side of the set pressure, when the relief valve is set to the spring pressure of the closing spring so as to open , the relief valve is to weaken the spring of the closing spring so as to bring the pressure to open the set pressure set by the pressure reducing valve, the relief valve when the following setting pressure set by the pressure of the secondary side pressure reducing valve If you open the occurring, so impair the function of the pressure reducing valve. また、このことから安全を見越して閉鎖ばねのバネ圧を強くすると、二次側の圧力が減圧弁により設定される設定圧力よりも遥かに高くなったときにも逃し弁が開弁しない場合が生じて、二次側に接続する機器を破損させるようになる問題がでてくる。 Also, when strong spring pressure of the closing spring in anticipation of safety from this that, if the pressure of the secondary side does not open is also relief valve when it much higher than the set pressure set by the pressure reducing valve occur, there arises a problem that so as to damage the equipment connected to the secondary side.

本発明は従来手段に生じているこれらの問題を解消せしめるためになされたものであって、減圧弁の弁箱に、二次側に生じた異常な圧力を外部に逃す逃し弁を組込んで、減圧・逃し弁を構成する際に、組み込む逃し弁を、 The present invention was made to allowed to solve these problems occurring in the prior art device, the valve body of the pressure reducing valve, incorporates a relief valve miss an abnormal pressure generated in the secondary side to the outside , when you configure the pressure reduction and relief valve, the relief valve incorporated,
減圧弁に減圧作動を行なわす感圧板の作動により開閉制御せしめるよう感圧板に連繋して、受圧面積の広い感圧板を利用して感度の良い逃し弁とし、これにより、二次側に生じた異常な圧力を、減圧弁による所定の減圧作動に支障を与えることなく、かつ、その減圧弁により設定される設定圧力を基準として、それ以上に二次側の圧力が上昇したときに、感度よくそれを検出して正しく・迅速に外部に逃し得るようにする減圧・逃し弁を構成する新たな手段を提供することを目的とする。 In tandem with the opening and closing control allowed to as a sense plate by the operation of sensitive pressure plate to perform vacuum operated pressure reducing valve, a good sensitivity relief valve by using a wide-sensitive plate of the pressure receiving area, thereby resulting in secondary abnormal pressure, without giving any trouble to a predetermined vacuum actuated by the pressure reducing valve and the set pressure set by the pressure reducing valve as a reference, when the pressure of more on the secondary side increases, sensitivity and to provide a new means constituting the vacuum-relief valve to detect it to be capable correctly and promptly missed the outside.

[課題を解決するための手段] そして、本発明においては、上述の目的を達成するための手段として、弁箱内に設けた一次側と二次側との連通を開閉制御する減圧用弁に、上端側にバランス用のピストンを具備せしめた弁棒の下端側を連結し、その弁棒の軸心部位に上下に貫通するロッドを摺動自在に嵌挿し、 [Means for Solving the Problems] In addition, in the present invention, as a means to achieve the above object, the pressure reducing valve that controls the opening and closing of the communication between the primary side and the secondary side provided in the valve casing , connects the lower end of the valve stem brought comprising a piston for balancing the upper side, slidably inserted a rod which penetrates vertically the axis site of the valve stem,
そのロッドの上端側を、二次圧を感知して作動する感圧板に連繋し、そのロッドの前記減圧用弁より下方に突出する下端部に、逃し弁用の弁を、該ロッドの長手方向に摺動自在に嵌挿するとともにその逃し弁用の弁の該ロッドに対する下方への動きを所定位置に規制するストッパーを設けて、その逃し弁用の弁に前記ストッパーに向け押出すバネを連繋し、その逃し弁用の弁により開閉する逃し弁用の弁口の弁箱の底部に外部に開放させて設け、 The upper end side of the rod, tandem sensitive plate which operates by sensing the secondary pressure, the lower end projecting downward from the pressure reducing valve of the rod, a valve for relief valve, the longitudinal direction of the rod slidably provided a stopper for restricting the downward movement relative to the rod of the valve for the relief valve at a predetermined position as well as fitted, interlocking extruding spring toward the stopper on the valve for the relief valve and, provided is opened to the outside at the bottom of the valve box valve port for relief valve for opening and closing the valve for the relief valve,
前記弁棒の上端側を前述感圧板の下面に対し離接自在に衝合せしめてなる減圧・逃し弁を提起するものである。 It is intended to raise the pressure reduction and relief valve comprising disjunction freely allowed abutment against the lower surface of the above-described sense the pressure plate the upper side of the valve stem.

[実施例] 次に実施例を図面に従い詳述する。 Detail in accordance with Embodiment] Next drawings embodiments.

第1図は本発明を実施せる減圧・逃し弁Aの縦断した正面図で、同図において、1は弁箱、20はその弁箱1内に一次側Xと二次側Yとの連通を開閉制御するよう設けた減圧用弁、3は上端側にバランス用のピストン30を具備せしめて下端部を前記減圧用弁20に連結した弁棒、4はその弁棒3の軸心部位に上下に貫通するよう嵌挿したロッド、5は二次圧を感知して作動する感圧板、60は前記ロッド4の下端部にそのロッド4の長手方向に摺動自在に嵌挿した逃し弁用の弁、Sはその逃し弁用の弁60の前記ロッド4に対する下方への可動範囲を規制するストッパー、61は前記逃し弁用の弁60により開放制御されるよう弁箱1の底部に設けた逃し弁用の弁口、70は前記逃し弁用の弁60を前述ストッパーSに向け押出すように設けたバネを示している。 A longitudinal elevational view of FIG. 1 is vacuum-relief valve A to implement the present invention, reference numeral 1 is a valve box, 20 a communication between the primary-side X and the secondary side Y to the valve box 1 closing control is as provided a pressure reducing valve, 3 valve stem lower end portion allowed to include a piston 30 for balancing the upper end side is connected to the pressure reducing valve 20, 4 vertical the axis site of the valve stem 3 as fitting inserted rod which penetrates the sensitive plate which operates by sensing the secondary pressure is 5, 60 for relief valve fitted slidably in the longitudinal direction of the rod 4 to the lower end of the rod 4 valve, S is a stopper for restricting the movable range downward with respect to the rod 4 of the valve 60 for the relief valve, 61 missed provided at the bottom of the valve box 1 so as to be opened controlled by a valve 60 for the relief valve valve port for the valve, 70 denotes a spring provided with a valve 60 for the relief valve so as to push towards the aforementioned stopper S.

弁箱1は、一側に入口側の接続管10を具備し他側に出口側の接続管11を具備する弁箱本体1aと、その弁箱本体1a Valve box 1 has a valve casing body 1a having a connection pipe 11 on the outlet side to the other side provided with a connecting pipe 10 on the inlet side to the one side, the valve casing body 1a
の上面にキャップ状に組付けられるバネケース1bとよりなる。 More the spring case 1b assembled on the cap-like on the upper surface. そして、弁箱本体1aの内腔には、入口側の接続管 Then, in the lumen of the valve casing body 1a, the inlet side of the connecting pipe
10に通ずる一次側Xと、出口側の接続管11に通ずる二次側Yとを隔てる隔壁12が設けられ、その隔壁12に軸線方向を上下方向とした筒状部13がそれの胴部を一次側Xに連通せしめて装設してあって、この筒状部13に、前記弁棒3がそれの上端側に具備するバランス用のピストン30 A primary X leading to 10, partition wall 12 separating the secondary Y communicating with the connection pipe 11 on the outlet side is provided, the cylindrical portion 13 in which the axial and vertical direction on the partition wall 12 is a body portion of it and each other and So設 by allowed communication with the primary X, in the cylindrical portion 13, the piston 30 for balance is the valve stem 3 is provided in the upper end of it
を水密に嵌合せしめて上下に摺動自在に嵌挿してあり、 The Yes and slidably inserted vertically put in engagement with the watertight,
その弁棒3の前記筒状部13の下方の開放口から下方に突出する下端部には、前述の減圧用弁20が一体的に組付けてある。 The lower end portion projecting downwardly from the open mouth of the lower of the tubular portion 13 of the valve stem 3, the pressure reducing valve 20 described above is are assembled integrally. そしてまた、前記筒状部13の下方の開放口の口縁には、前記減圧用弁20と対向する減圧用弁座21が形設してある。 And also, the opening edge of the mouth opening of the lower of the cylindrical portion 13, the vacuum valve seat 21 which faces the pressure-reducing valve 20 are then Katachi設.

また、弁箱本体1aの上面側には、二次側Yと連通する感圧室Wが形成され、その感圧室Wを蓋するように前記感圧板5が組付けてある。 On the upper surface side of the valve casing body 1a, is sensitive chamber W is formed in communication with the secondary side Y, said sense plate 5 so as to cover the pressure sensitive chamber W are assembled. 該感圧板5は、前述のバネケース1bを弁箱本体1aの上面にセットネジにより止着するときに、該感圧板5の周縁部をバネケース1bと弁箱本体1a Sensitive pressure plate 5, when fastened by a set screw spring case 1b of the foregoing on the upper surface of the valve box body 1a, the spring case 1b the periphery of the photosensitive plate 5 and the valve body main body 1a
との接合部位に挾み込むことで弁箱1に組付けてある。 It is assembled to the valve casing 1 by interleave the joint portion between.
そしてバネケース1bの上部に螺合して設けた調節ネジ80 The adjustment screw 80 which is provided screwed on top of the spring case 1b
と該感圧板5の上面との間に張架した減圧用バネ2aによって感圧室W側に押込まれている。 And pushed to the pressure sensing chamber W side by vacuum spring 2a which is stretched between the upper surface of the photosensitive plate 5 and.

前記ロッド4は、前述の筒状部13に嵌合している弁棒3 The rod 4, the valve stem 3 is fitted in the cylindrical portion 13 of the above
より長く形成してあって、その弁棒3の軸心部位に、その弁棒3を上下に貫通しかつ上下に自在に摺動するように嵌挿してある。 And each other and longer formed, its axial center portion of the valve stem 3, are fitted so as to slide freely the valve stem 3 in penetrating and vertically up and down. そして、該ロッド4の前記弁棒3から上方に突出する上端部4aは、平盤状に形成されて前記感圧板5の下面に衝合し、かつ、その上端部4aの上面側に植設せるねじ4bを感圧板5の上面側に突出させて締体ナット4cにより締着することで、感圧板5に一体に連結している。 The upper portion 4a protruding upward from the valve stem 3 of the rod 4, and abuts against the lower surface of the sensitive plate 5 is formed in a flat plate shape, and planted on the upper surface of the upper portion 4a It is integrally connected to the sensitive plate 5 fastened by a screw 4b to protrude on the upper surface of the sensitive plate 5 fastening body nut 4c to.

また、該ロッド4の下端側は、前述の減圧用弁20から下方に長く突出し、その突出部に前述した逃し弁用の弁6 Further, the lower end of the rod 4 is longer protrudes downward from the pressure reducing valve 20 described above, the valve for relief valve as described above to the projection portion 6
が該ロッド4の軸方向(長手方向)の摺動自在に嵌挿され、該ロッド4の下端部に設けた止め輪よりなるストッパーSによって、該ロッド4に対する可動範囲が規制されるとともに該ロッド4からの脱出が阻止されている。 The rod but slidably inserted in the axial direction of the rod 4 (longitudinal direction), by the stopper S made of a snap ring provided at the lower end of the rod 4, the movable range for the rod 4 is restricted escape is prevented from 4.
そして、この逃し弁用の弁60は、それと前記弁棒3の下端部との間に張架せる弱いバネ70により前記ストッパーSと衝合する位置に向け押出されている。 Then, the valve 60 for the relief valve, therewith are extruded toward a position abutting with the stopper S by Zhang Kassel weak spring 70 between the lower end portion of the valve stem 3.

前記逃し弁用の弁60の対向する逃し弁用の弁口61は、弁箱本体1aの底部で、前述の筒状部13の下方に位置する部位に、外部に対し開放するように形設してあり、それの下方には、この逃し口となる弁口61から排出される圧力を所望の個所に導く配管を接続するための接続管14が連続して装設してある。 Valve port 61 for opposing relief valve of the valve 60 for the relief valve at the bottom of the valve box body 1a, Katachi設 a portion located below the aforementioned cylindrical portion 13, so as to open to the outside Yes and, in its lower, connecting pipe 14 for connecting the pipe for guiding the pressure discharged from the valve port 61 serving as the spill port to the desired location is it is to So設 continuously. そして、前記弁口61の口縁には前述逃し弁用の弁60と離接自在に衝合して逃し弁6を構成する環状の弁座62が形設してある。 The annular valve seat 62 which constitutes the relief valve 6 abuts freely disjunctive and the valve 60 for the aforementioned relief valve to the rim of the valve port 61 are then Katachi設.

しかして、前述の弁棒3の上端側は、前記筒状部13の上方の開放部から感圧室W内に突入し、その上端の端面3a Thus, the upper end of the valve stem 3 above, projects into the pressure sensing chamber W from the upper opening of the tubular portion 13, the end surface 3a of the upper end
を、前述したロッド4の平盤状に形成した上端部4aの下面に衝合せしめることで、その平盤状の上端部4aを介して感圧板5の下面に対し離接自在に衝合せしめてある。 And that allowed to abut on the lower surface of the upper portion 4a formed on the flat plate-like rod 4 described above, and disjunctive freely allowed abutment against the lower surface of the sensitive plate 5 via the flat plate-shaped upper portion 4a is there.

なお、逃し弁用の弁60に連繋する前述の弱いバネ70は、 Incidentally, the aforementioned weak spring 70 cooperative with the valve 60 for the relief valve,
減圧用バネ2aのバネ圧よりも十分の一乃至数十分の一の極く弱いバネ圧に設定される。 It is set to one-tenth to several tenths of a very weak spring pressure than the spring pressure of the pressure reducing spring 2a.

このように構成される実施例装置は次のように作用する。 Thus configured embodiment apparatus operates as follows.

二次側Y側の圧力、即ち、感圧室W内の圧力が、減圧用バネ2aのバネ圧をF1とし、逃し弁用の弁60に連繋したバネ70のバネ圧をF2としたときに、F1−F2の値よりも小さいときは、感圧板5が減圧用バネ2aのバネ圧で下方に押込まれることで、第2図の状態となる。 The secondary pressure Y side, i.e., when the pressure in the pressure sensing chamber W is, the spring pressure of the pressure reducing spring 2a and F1, the spring pressure of the spring 70 in tandem with the valve 60 for the relief valve and the F2 , is smaller than the value of F1-F2, by feeling the pressure plate 5 pushed downward by the spring pressure of the pressure reducing spring 2a, the state of FIG. 2.

この状態は、逃し弁用の弁60が逃し弁用の弁座62に突当たって、それに連繋するバネ70のバネ圧で弁棒3を押上げていることで、弁棒3をロッド4と感圧板5とが一体に結合した状態であり、この状態において、感圧室Wの圧力が低下することで、逃し弁用の弁60を逃し弁用の弁座62に押付けたまま、感圧板5及びロッド4および弁棒3ならびにそれに組付けた減圧用弁20が一体に動き、減圧用弁20と減圧用弁座21との間の開度を拡縮して、二次側Yの圧力を一定に保持するよう作用する。 This state is a valve 60 for relief valve is standing abutting the valve seat 62 for relief valve, it has pushed up the valve stem 3 by the spring pressure of the spring 70 to be cooperative therewith, the valve stem 3 and the rod 4 a state in which the sensitive plate 5 is bonded together while in this state, since the pressure sensitive chamber W drops, pressed against the valve seat 62 for valve relief valve 60 for relief valve, sensitive plate 5 and the rod 4 and the valve stem 3 and the pressure reducing valve 20 assembled thereto moves together, and scaling the opening between the pressure reducing valve seat 21 and the pressure reducing valve 20, the pressure of the secondary-side Y act so as to maintain constant.

次に、二次側Yの圧力がF1−A2の値より大きくなってくると、減圧用弁20が減圧用弁座21に圧接して第1図の状態となり、さらに二次側Yの圧力が異常に増大して、F1 Then, when the pressure of the secondary-side Y is it becomes larger than the value of F1-A2, the pressure reducing valve 20 becomes the state of FIG. 1 in pressure contact with the pressure reducing valve seat 21, the pressure of the further secondary Y and it is abnormally increased, F1
+F2の値より大きくなると、第3図の如く、減圧用弁20 Larger the than the value of + F2, as FIG. 3, the pressure reducing valve 20
を減圧用弁座2に衝合した位置に残して感圧板5とロッド4が上昇し、これにより逃し弁用の弁60を引き上げ逃し弁6を開弁状態とする。 Sensitive plate 5 and the rod 4 is raised, leaving the position abutting the pressure-reducing valve seat 2, thereby a relief valve 6 pulling the valve 60 for relief valve an open state.

次に第4図は別の実施例を示している。 Next FIG. 4 shows another embodiment.

この実施例は、弁棒3を押上げるバネ70の外に、弁棒3 This embodiment, the valve stem 3 to the outside of the push up the spring 70, the valve rod 3
の下端部と弁箱本体1aとの間にもう一つのバネ71を張架して、二つのバネ70・71によって弁棒3を押上げるようにしている他は、前記第1図乃至第3図に示した実施例と変わりなく、同じ構成部材については同一の符号を付して詳しい説明を省略する。 By stretching another spring 71 between the lower end portion and the valve casing body 1a of the other that the valve stem 3 to push up so the two springs 70, 71, the first diagram to third no different from the embodiment shown in the drawings, the same components are not described in detail are denoted by the same reference numerals.

この実施例においては、バネ71のバネ圧をF3としたとき、F1−F2−F3の値より二次側Yの圧力が小さいときに所定の減圧作動を行ない、二次側Yの圧力がF1+F2より大きくなったときに逃し弁6が開弁するようになるが、 In this embodiment, when the spring pressure of the spring 71 and the F3, F1-F2-F3 pressure of the secondary-side Y than the value of performs predetermined vacuum actuated when small, the secondary pressure Y is F1 + F2 relief valve 6 when it becomes larger but comes to open,
このとき、F3は関与しない。 In this case, F3 is not involved. そして、このことからF2を極く小さいバネ圧に設定できることになって、逃し弁6 Then, it supposed to be able to set the F2 Therefore the very small spring pressure, relief valve 6
の開弁作動をシャープにし得るようになる。 Consisting of the valve-opening to be sharp.

次に第5図はさらに別の実施例を示している。 Next Fig. 5 shows yet another embodiment.

この実施例は、逃し弁用の弁60に、弁箱1の外面側から操作して該逃し弁用の弁60を強制的に開弁する手動開閉装置aを組付けている他は、前述の第1図乃至第3図に示した実施例と変わりなく、同じ構成部材については同一の符号を付して詳しい説明は省略する。 This embodiment, the valve 60 for relief valve, other are assembled manually switchgear a forcibly opening the valve 60 for 該逃 and valve by operating from the outer surface side of the valve box 1, above no different from the embodiment shown in FIG. 1 to FIG. 3, the same constituent members detailed description are denoted by the same reference numerals will be omitted for.

しかして、手動開閉装置aは、弁箱本体1aの底部で弁口 Thus, the manual opening and closing device a, valve port at the bottom of the valve box body 1a
61の下方位置に、弁箱1の外面に突出する操作部90を押込むことで内端部が突上げられるプッシュボタン状の押杆9を、上下に移動自在に設け、その押杆9の内端部を逃し弁用の弁60の下面に衝合させることで構成してあり、押杆9の押込みにより逃し弁用の弁60を、前述のバネ70の付勢に抗して突上げることで開弁状態とするよう作用する。 61 at the lower position of the push button-like pushing rod 9 of the inner end portion is raised collision the operating portion 90 which projects to the outer surface of the valve casing 1 by pushing it, provided movably up and down, the pushing rod 9 Yes constituted by causing abutment on the lower surface of the valve 60 for the inner end portion of the relief valve, the valve 60 for relief valve by pushing the pushing rod 9, raising butt against the bias of the aforementioned spring 70 It acts to open valve state by.

なお、この第5図に示す実施例においても、同第5図にて鎖線に示している如く、前述の第4図の実施例に用いたバネ71を施す場合がある。 Also in the embodiment shown in FIG. 5, as is shown in chain lines at the same Figure 5, there is a case of applying the spring 71 used in the embodiment of Figure 4 described above.

[発明の効果] 以上説明したように、本発明による減圧・逃し弁は、二次側に設定圧力より高い圧力が生じて、感圧板5が押し上げられると、この感圧板5とロッド4およびバネ70を介して連繋する減圧用弁20が引き上げられて閉弁することで一次側Xとの連通を遮断する状態となり、次いで、 As has been described [Effect of the Invention, vacuum-relief valve according to the present invention, occurs a pressure higher than the set pressure on the secondary side, when the sensitive plate 5 is pushed up, the sensitive plate 5 and the rod 4 and a spring pressure-reducing valve 20 for interlocking through 70 is lifted in a state of blocking the communication between the primary-side X by closed, then,
この減圧用弁20を閉弁位置に残して感圧板5とロッド4 Sensitive plate 5 and the rod 4, leaving the pressure-reducing valve 20 to the closed position
が上昇し逃し弁用の弁60を引き上げて逃し弁用の弁口61 Valve port 61 for but valve missed by pulling up on the valve 60 for increased relief valve
を開放し、二次側の圧力を外部に逃すようにして、弁箱1に二次側に生じた異常な圧力を外部に逃すよう設ける逃し弁6が、減圧用弁20に減圧作動を行なわす受圧面積の広い感圧板5の作動により開閉制御されるようにしてあるので、この逃し弁6の感度がすこぶる鋭敏になる。 Opening and so as to miss the pressure of the secondary side to the outside, relief valve 6 provided so as to miss an abnormal pressure generated in the valve box 1 on the secondary side to the outside, made a vacuum operated pressure-reducing valve 20 since the operation of the wide-sensitive plate 5 of to the pressure receiving area are to be opened and closed controlled, the sensitivity of the relief valve 6 is exceedingly sensitive.
従って、二次側に生じた異常な圧力を、減圧弁による所定の減圧作動に支障を与えることなく、かつ、その減圧弁により設定される設定圧力を基準として、これ以上に二次側の圧力が上昇したときに、感度よくそれを検出して正しく・迅速に外部に逃し得るようにする減圧・逃し弁が得られるようになる。 Therefore, an abnormal pressure generated in the secondary side, without giving any trouble to a predetermined vacuum actuated by the pressure reducing valve and the set pressure set by the pressure reducing valve as a reference, further the pressure of the secondary side There when raised, correctly-rapidly sensitively detect it becomes vacuum-relief valve to be capable relief to the outside is obtained.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

第1図は本発明を実施せる減圧・逃し弁の縦断正面図、 Figure 1 is a vertical front view of the pressure reduction and relief valves to implement the present invention,
第2図および第3図は同上の作用の説明図、第4図は別の実施例の縦断正面図、第5図はさらに異なる実施例の縦断正面図である。 FIGS. 2 and 3 is an explanatory view of the action of the same, vertical sectional front view of FIG. 4 another embodiment, Figure 5 is a further vertical sectional front view of different embodiments. 図面符号の説明 A……減圧・逃し弁、a……手動開閉装置 S……ストッパー、W……感圧室 X……一次側、Y……二次側 F1・F2・F3……バネ圧、1……弁箱 1a……弁箱本体、1b……バネケース 10・11……接続管、12……隔壁 13……筒状部、14……接続管 20……減圧用弁、2a……減圧用バネ 21……減圧用弁座、3……弁棒 3a……端面、30……ピストン 4……ロッド、4a……端部 4b……ねじ、4c……締体ネット 5……感圧板、6……逃し弁 60……逃し弁用の弁 61……逃し弁用の弁口、62……環状の弁座 70・71……バネ、80……調節ネジ 9……押杆、90……操作部 Description A ...... vacuum-relief valve reference numerals, a ...... manually switchgear S ...... stopper, W ...... pressure sensing chamber X ...... primary, Y ...... secondary F1 · F2 · F3 ...... spring pressure , 1 ...... valve body 1a ...... valve box body, 1b ...... spring case 10, 11 ...... connecting tube, 12 ...... partition wall 13 ...... cylindrical portion, 14 ...... connecting tube 20 ...... pressure reducing valve, 2a ... ... decompression spring 21 ...... pressure reducing valve seat, 3 ...... stem 3a ...... end face, 30 ...... piston 4 ...... rod, 4a ...... end 4b ...... screws, 4c ...... clamping member net 5 ...... sensitive plate, the valve port for the valve 61 ...... relief valve for 6 ...... relief valve 60 ...... relief valve, 62 ...... annular valve seat 70, 71 ...... spring, 80 ...... adjustment screw 9 ...... pushing rod , 90 ...... operation unit

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】弁箱1内に設けた一次側Xと二次側Yとの連通を開閉制御する減圧用弁20に、上端側にバランス用のピストン30を具備せしめた弁棒3の下端側を連結し、 To 1. A valve body pressure reducing valve 20 which controls the opening and closing of the communication between the primary-side X and the secondary side Y provided in one, the lower end of the valve stem 3 which allowed comprising a piston 30 for balancing the upper end connecting the side,
    その弁棒3の軸心部位に上下に貫通するロッド4を摺動自在に嵌挿し、そのロッド4の上端側を、二次圧を感知して作動する感圧板5に連繋し、そのロッド4の前記減圧用弁20より下方に突出する下端部に、逃し弁用の弁60 The rod 4 penetrating vertically the axis site of the valve stem 3 slidably inserted, the upper end of the rod 4, in tandem sensitive plate 5 which operates by sensing the secondary pressure, the rod 4 wherein the lower end projecting downward from the pressure reducing valve 20, the valve for the relief valve 60
    を、該ロッド4の長手方向に摺動自在に嵌挿するとともにその逃し弁用の弁60の該ロッド4に対する下方への動きを所定位置に規制するストッパーSを設けて、その逃し弁用の弁60に前記ストッパーSに向け押出すバネ70を連繋し、その逃し弁用の弁60により開閉する逃し弁用の弁口61を弁箱1の底部に外部に開放させて設け、前記弁棒3の上端側の前述感圧板5の下面に対し離接自在に衝合せしめてなる減圧・逃し弁。 And by providing a stopper S for restricting the downward movement relative to the rod 4 of the valve 60 for the relief valve at a predetermined position while fitted slidably in the longitudinal direction of the rod 4, for the relief valve tandem extruding spring 70 toward the stopper S to the valve 60, provided by opening the valve port 61 for relief valve for opening and closing the valve 60 for the relief valve to the outside bottom of the valve box 1, the valve stem 3 on the upper end side of the aforementioned feeling pressure reduction and relief valve comprising disjunction freely allowed abutment against the lower surface of the pressure plate 5.
JP61036057A 1986-02-20 1986-02-20 Pressure reduction and relief valve Expired - Lifetime JPH07104730B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61036057A JPH07104730B2 (en) 1986-02-20 1986-02-20 Pressure reduction and relief valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61036057A JPH07104730B2 (en) 1986-02-20 1986-02-20 Pressure reduction and relief valve

Publications (2)

Publication Number Publication Date
JPS62192813A JPS62192813A (en) 1987-08-24
JPH07104730B2 true JPH07104730B2 (en) 1995-11-13

Family

ID=12459087

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61036057A Expired - Lifetime JPH07104730B2 (en) 1986-02-20 1986-02-20 Pressure reduction and relief valve

Country Status (1)

Country Link
JP (1) JPH07104730B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9141937B2 (en) 2006-01-31 2015-09-22 Accenture Global Services Limited System for storage and navigation of application states and interactions

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS638968Y2 (en) * 1981-10-08 1988-03-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9141937B2 (en) 2006-01-31 2015-09-22 Accenture Global Services Limited System for storage and navigation of application states and interactions
US9575640B2 (en) 2006-01-31 2017-02-21 Accenture Global Services Limited System for storage and navigation of application states and interactions

Also Published As

Publication number Publication date
JPS62192813A (en) 1987-08-24

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