JPS626361Y2 - - Google Patents
Info
- Publication number
- JPS626361Y2 JPS626361Y2 JP799084U JP799084U JPS626361Y2 JP S626361 Y2 JPS626361 Y2 JP S626361Y2 JP 799084 U JP799084 U JP 799084U JP 799084 U JP799084 U JP 799084U JP S626361 Y2 JPS626361 Y2 JP S626361Y2
- Authority
- JP
- Japan
- Prior art keywords
- ball
- annular groove
- shaft
- operating
- valve
- 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 9
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
Landscapes
- Safety Valves (AREA)
Description
【考案の詳細な説明】
本考案は、流体通路中に設けた弁を、異常事態
の発生等に応じて緊急的に開又は閉に操作する装
置に関するものである。[Detailed Description of the Invention] The present invention relates to a device that opens or closes a valve provided in a fluid passage in an emergency manner in response to the occurrence of an abnormal situation.
例えば船舶用機関の燃料パイプライン又はタン
カーの原油輸送用パイプライン等には、そのパイ
プライン中に設けた弁を、火災事故等の発生に応
じて緊急的に遮断操作したり、開放操作したりす
ることが行われる。この場合、従来の装置は日本
工業規格Ｆ−7399−1978に規格され、これは第１
図に示すように、流体通路中における弁箱１内の
弁体２に連結した操作軸３の雄ねじ部４を、弁箱
１に固着した弁保持部材５の個所において、当該
弁保持部材５に回転自在に軸支したハンドル６付
き雌ねじ軸７内に螺合し、弁保持部材５と操作軸
３との間に弁体２を閉方向に付勢する緊急操作用
ばね８を蓄圧状態で介挿する一方、前記雌ねじ軸
７外周と弁保持部材５の内周との両方に、これら
の軸線と直角方向に半円形孔９，１０を穿設し、
該半円形孔９，１０に断面半円形状のロツクピン
１１を回転自在に挿入することにより、雌ねじ軸
７を弁保持部材５に対して摺動不能に保持し、異
常事態の発生に応じて前記ロツクピン１１を、そ
の一端に固着したレバー１２を介して回動して、
弁保持部材５に対する雌ねじ軸７の保持を解除す
ることにより、弁箱１内の弁体２を緊急操作用ば
ね８のばね力にて緊急的に閉じるようにしたもの
であつた。 For example, in fuel pipelines for marine engines or pipelines for transporting crude oil in tankers, valves installed in the pipelines may be shut off or opened in an emergency manner in the event of a fire or other accident. What is done is done. In this case, the conventional equipment is standardized to Japanese Industrial Standard F-7399-1978, which is the first
As shown in the figure, the male threaded portion 4 of the operating shaft 3 connected to the valve body 2 in the valve box 1 in the fluid passage is connected to the valve holding member 5 at the point where the valve holding member 5 is fixed to the valve box 1. An emergency operation spring 8 is inserted between the valve holding member 5 and the operation shaft 3 in a pressure-accumulated state, and is screwed into a female threaded shaft 7 with a rotatably supported handle 6. On the other hand, semicircular holes 9 and 10 are bored in both the outer periphery of the female threaded shaft 7 and the inner periphery of the valve holding member 5 in a direction perpendicular to these axes,
By rotatably inserting the lock pin 11 having a semicircular cross section into the semicircular holes 9 and 10, the female threaded shaft 7 is held in a non-slidable manner relative to the valve holding member 5, and the above-mentioned Rotating the lock pin 11 via a lever 12 fixed to one end thereof,
By releasing the retention of the female threaded shaft 7 from the valve holding member 5, the valve body 2 in the valve case 1 can be urgently closed by the spring force of the emergency operation spring 8.
ところがここにおけるロツクピン１１には、緊
急操作用ばね８のばね力の全部が作用していて、
その回転には可成りの抵抗が作用するから、ロツ
クピン１１をレバー１２を介して回動する場合、
レバー１２に加える操作力とロツクピン１１を所
定の回転角度だけ回転するのに必要な操作ストロ
ークとは反比例し、レバー１２の長さを短くすれ
ば操作ストロークは短くなる反面大きな操作力を
必要とし、レバー１２の長さを長くすれば操作力
は軽くなる反面操作ストロークが増大するので、
装置が大型になると共に、レバー１２の回転開始
から弁体の閉までの間の可成り時間的遅れを生ず
るのであり、また、このレバー１２をソレノイド
等のアクチエータで回転操作する場合、該ソレノ
イド等のアクチエータとしては、長いストローク
ものとか、大きい操作力を発生するものにしなけ
ればならず、従つて大型で重いソレノイド等のア
クチエータになるから、これまた装置が大型にな
ると共に、重量が増大するのであつた。 However, the entire spring force of the emergency operation spring 8 is acting on the lock pin 11 here.
Since considerable resistance acts on the rotation, when the lock pin 11 is rotated via the lever 12,
The operating force applied to the lever 12 and the operating stroke required to rotate the lock pin 11 by a predetermined rotation angle are inversely proportional; if the length of the lever 12 is shortened, the operating stroke becomes shorter, but a larger operating force is required. If the length of the lever 12 is increased, the operating force becomes lighter, but the operating stroke increases.
As the device becomes larger, a considerable time delay occurs between the start of rotation of the lever 12 and the closing of the valve body, and when the lever 12 is rotated by an actuator such as a solenoid, the solenoid, etc. The actuator must have a long stroke or generate a large operating force, and therefore must be a large and heavy actuator such as a solenoid, which also increases the size and weight of the device. It was hot.
本考案は、この種の緊急開閉弁における操作装
置の小型、軽量化を図ると共に、時間的な遅れを
低減することを目的とするものであつて、このた
め本考案は、ケーシング内に軸方向に摺動自在に
軸支した操作軸を、流体通路中の弁に当該操作軸
の軸方向への摺動によつて前記弁が開閉するよう
に連結し、この操作軸に前記弁を閉又は開方向に
付勢する緊急操作用ばねを蓄圧状態で装着して成
る緊急開閉弁において、前記操作軸の外周面には
その円周方向に延びる第１環状溝を設け、この操
作軸における第１環状溝の外側には、前記ケーシ
ング内に操作軸の軸方向に摺動自在に嵌挿したス
リーブを摺動自在に被嵌し、該スリーブの内周孔
を前記緊急操作用ばねにおけるばね力の方向とは
逆方向に向つて末広がりのテーパ面に形成して、
このテーパ面と前記操作軸との間に第１ボール
を、当該第１ボールの一部が前記第１環状溝に嵌
まるように挿入する一方、前記スリーブの外周面
にはその円周方向に延びる第２環状溝を設け、該
第２環状溝に、前記ケーシングに操作軸の軸方向
に摺動自在に保持するようにして設けた第２ボー
ルを係合し、前記ケーシングには前記第２ボール
を第２環状溝に係合する位置と、この係合状態か
ら離脱する位置とに作動させるようにした手段を
設けたことを特徴とするものである。 The purpose of the present invention is to reduce the size and weight of the operating device in this type of emergency on-off valve, as well as to reduce time delays. An operating shaft that is slidably supported by a shaft is connected to a valve in a fluid passage so that the valve opens and closes by sliding the operating shaft in the axial direction, and the operating shaft is connected to the operating shaft to close or close the valve. In an emergency opening/closing valve including an emergency operation spring biased in the opening direction in a pressure-accumulated state, a first annular groove extending in the circumferential direction is provided on the outer circumferential surface of the operation shaft, and a first annular groove on the operation shaft A sleeve, which is slidably inserted into the casing in the axial direction of the operating shaft, is slidably fitted on the outside of the annular groove, and the inner circumferential hole of the sleeve is adapted to absorb the spring force of the emergency operating spring. Formed into a tapered surface that widens toward the opposite direction,
A first ball is inserted between the tapered surface and the operating shaft so that a part of the first ball fits into the first annular groove, and the outer peripheral surface of the sleeve is inserted in the circumferential direction. a second extending annular groove is provided, a second ball provided in the casing so as to be slidably held in the axial direction of the operating shaft is engaged with the second annular groove; The present invention is characterized by providing means for operating the ball into a position where it engages with the second annular groove and a position where it disengages from this engaged state.
以下本考案を、流体通路中の弁がバタフライ弁
である場合このバタフライ弁の緊急操作用に適用
したときの実施例について説明すると、図におい
て２０は流体通路１９中に設けたバタフライ弁を
示し、該バタフライ弁２０は、弁箱２１と該弁箱
２１内で回転する弁体２２と該弁体２２が取付く
弁軸２３とからなり、前記バタフライ弁２０にお
ける弁箱２１に取付くケーシング２４内には、前
記弁軸２３の軸線と直角方向に延びる操作軸２５
を摺動及び回転自在に軸支し、前記ケーシング２
４における弁軸２３には溝２６付きレバー２７を
固着する一方、前記操作軸２５上に回転自在で且
つ摺動不能に被嵌のスリーブ２８にピン２９を設
け、該ピン２９を前記レバー２７における溝２６
に係合することにより、前記操作軸２５の軸方向
への摺動にてバタフライ弁２０における弁体２２
が開閉回動するように構成されている。 Hereinafter, an embodiment will be described in which the present invention is applied to emergency operation of a butterfly valve when the valve in the fluid passage is a butterfly valve. In the figure, 20 indicates a butterfly valve provided in the fluid passage 19, The butterfly valve 20 includes a valve body 21, a valve body 22 that rotates within the valve body 21, and a valve shaft 23 to which the valve body 22 is attached. includes an operating shaft 25 extending in a direction perpendicular to the axis of the valve shaft 23;
is slidably and rotatably supported, and the casing 2
4, a lever 27 with a groove 26 is fixed to the valve shaft 23, and a pin 29 is provided to the sleeve 28 which is rotatably but non-slidably fitted on the operating shaft 25, and the pin 29 is fixed to the lever 27. Groove 26
, the valve body 22 in the butterfly valve 20 is slid in the axial direction of the operating shaft 25.
is configured to rotate to open and close.
前記操作軸２５の一端には雄ねじ部３０を設
け、該雄ねじ部３０を操作軸２５に回転自在に被
嵌した中空軸３１における雌ねじ部３２に螺合
し、前記中空軸３１に固着したばね受板３３を、
前記ケーシング２４に取付くシリンダ状ばねケー
ス３４内に回転不能で且つ摺動自在に挿入し（こ
のばね受板３３の外周面に突出したピン４０がば
ねケース３４に設けた長溝孔３３ａに嵌まつてい
る）、該ばね受板３３と前記ばねケース３４の終
端板３５との間には、前記操作軸２５をバタフラ
イ弁２０における弁体２２の閉方向に付勢する緊
急操作用ばね３６が蓄圧状態で介挿されている。
一方、前記操作軸２５の他端をスプライン軸３７
に形成し、該スプライン軸３７に回転不能で且つ
摺動自在に被嵌したスリーブ３８を、前記ケーシ
ング２４内にブラケツト３９を介して軸支し、こ
のスリーブ３８をハンドル又は減速モータ（いず
れも図示せず）等にて回転するように構成する。 A male threaded portion 30 is provided at one end of the operating shaft 25, and the male threaded portion 30 is screwed into a female threaded portion 32 of a hollow shaft 31 that is rotatably fitted onto the operating shaft 25, and a spring receiver is fixed to the hollow shaft 31. Plate 33,
It is inserted non-rotatably and slidably into the cylindrical spring case 34 attached to the casing 24 (the pin 40 protruding from the outer peripheral surface of the spring receiving plate 33 fits into the long groove hole 33a provided in the spring case 34). Between the spring receiving plate 33 and the end plate 35 of the spring case 34, there is an emergency operation spring 36 that biases the operation shaft 25 in the closing direction of the valve body 22 of the butterfly valve 20. It is inserted in the state.
On the other hand, the other end of the operating shaft 25 is connected to a spline shaft 37.
A sleeve 38, which is formed into a shape and is non-rotatably but slidably fitted onto the spline shaft 37, is pivotally supported in the casing 24 via a bracket 39, and this sleeve 38 is connected to a handle or a deceleration motor (both of which are not shown in the figure). (not shown) etc.
５０は、前記緊急操作用ばね３６の蓄圧状態を
解除するための手段であつて、該手段５０は、前
記中空軸３１の外周面にその円周方向に延びるよ
うに設けた第１環状溝４１、この第１環状溝４１
の個所における操作軸２５の外周と前記ケーシン
グ２４内との間に摺動自在に嵌挿したスリーブ４
２、及び該スリーブ４２の外周面にその円周方向
に延びるように設けた第２環状溝４３、更には第
１ボール４４及び第２ボール４５とからなり、前
記スリーブ４２の内周孔を前記緊急操作用ばね３
６におけるばね力の方向とは逆方向に向つて末広
がりのテーパ面４６に形成し、該テーパ面４６と
操作軸２５との間に前記第１ボール４４を、当該
第１ボール４４の一部が第１環状溝４１に嵌まる
ように挿入する一方、前記第２ボール４５を、前
記ケーシング２４に前記操作軸２５の軸線に対し
て直角方向に穿設した孔４７に挿入して保持し、
その一部を前記第２環状溝４３に係合する。 Reference numeral 50 denotes means for releasing the pressure accumulation state of the emergency operation spring 36, and the means 50 includes a first annular groove 41 provided on the outer peripheral surface of the hollow shaft 31 so as to extend in the circumferential direction thereof. , this first annular groove 41
A sleeve 4 is slidably inserted between the outer periphery of the operating shaft 25 and the inside of the casing 24 at a location.
2, a second annular groove 43 provided on the outer circumferential surface of the sleeve 42 so as to extend in the circumferential direction, and a first ball 44 and a second ball 45. Emergency operation spring 3
The first ball 44 is formed between the tapered surface 46 and the operating shaft 25 so that a part of the first ball 44 is while inserting the second ball 45 so as to fit into the first annular groove 41, inserting the second ball 45 into a hole 47 formed in the casing 24 in a direction perpendicular to the axis of the operating shaft 25, and holding the second ball 45;
A portion thereof is engaged with the second annular groove 43 .
そして、４８は、前記第２ボール４５を第２環
状溝４３に係合する位置と、この係合状態から離
脱する位置とに作動させるようにした手段として
の一つの実施例であるソレノイドを示し、該ソレ
ノイド４８は、前記ケーシング２４にそのロツド
４９が前記孔４７に嵌まるように取付き、非通電
状態のときロツド４９が孔４７内に突出して前記
第２ボール４５を第２環状溝４３に係合する位置
に保持し、通電によつてロツド４９が後退するこ
とにより前記第２ボール４５の第２環状溝４３へ
の係合状態を解除するように構成されている。な
お、５１は第１ボール４４に対する押えリングで
ある。 Reference numeral 48 denotes a solenoid, which is an example of a means for operating the second ball 45 into a position where it engages with the second annular groove 43 and a position where it disengages from this engaged state. , the solenoid 48 is attached to the casing 24 so that its rod 49 fits into the hole 47, and when the solenoid 48 is not energized, the rod 49 protrudes into the hole 47 and moves the second ball 45 into the second annular groove 43. The second ball 45 is held in a position where it engages with the second annular groove 43, and the second ball 45 is disengaged from the second annular groove 43 by retracting the rod 49 when energized. Note that 51 is a holding ring for the first ball 44.
この構成において、ケーシング２４における孔
４７に嵌まつてこれに保持される第２ボール４５
は、その一部がスリーブ４２における第２環状溝
４３に係合して、スリーブ４２の摺動を阻止する
一方、該スリーブ４２におけるテーパ面４６に接
当する第１ボール４４は、その一部が操作軸２５
に螺合する中空軸３１における第１環状溝４１に
嵌まつて、中空軸３１ひいては操作軸２５の緊急
操作用ばね３６のばね力による摺動を阻止するか
ら、バタフライ弁２０は、開の状態に保持され
る。 In this configuration, the second ball 45 fits into and is held in the hole 47 in the casing 24.
A part of the first ball 44 is engaged with the second annular groove 43 in the sleeve 42 to prevent the sleeve 42 from sliding, while a part of the first ball 44 is in contact with the tapered surface 46 of the sleeve 42. is the operating axis 25
The butterfly valve 20 is in the open state because it fits into the first annular groove 41 in the hollow shaft 31 that is screwed into the hollow shaft 31 and prevents the hollow shaft 31 and the operation shaft 25 from sliding due to the spring force of the emergency operation spring 36. is maintained.
この場合において緊急操作用ばね３６のばね力
は、前記第１ボール４４及び第２ボール４５によ
り減殺されたのちソレノイド４８にて支持される
のである。すなわち、第４図に示すように、まず
第１環状溝４１に嵌まる第１ボール４４における
Ａ点に緊急操作用ばね３６のばね力Ｆが、操作軸
２５の軸線方向に作用し、このばね力Ｆの内ボー
ルの中心点に向かう分力Ｆ１は、各部に摩擦がな
いとすれば、
F1＝Fcosθ１
このＦ１のうち操作軸２５の軸線方向の分力Ｆ２
と、第１ボール４４のテーパ面４６への接触点Ｂ
方向の分力Ｆ３とは、
F3＝F1sinθ１／cosθ２
F2＝F1cosθ１−F3sinθ２
テーパ面４６に対する分力Ｆ３のうち操作軸２５
の軸線方向の分力Ｆ４は、
F4＝F3sinθ２
となり、このＦ２とＦ４との合計Ｆ５が、第２環
状溝４３の第２ボール４５への接触点Ｃに対して
操作軸２５の軸線方向に作用し、このＦ５のうち
第２ボール４５の中心点に向かう分力Ｆ６は、
F6＝F5cosθ３であり、
このＦ６のうち操作軸２５の直角方向の分力ｆ
（ｆ＝F6sinθ３）が、前記ソレノイド４８のロ
ツド４９に対してその軸線方向に作用するから、
結局前記緊急操作用ばね３６のばね力Ｆをソレノ
イド４８にて支持するときの力ｆは、
ｆ＝Fcosθ１・cosθ３・sinθ３
に減殺されるのであり、従つて、前記ソレノイド
４８としては、比較的小さい操作力を有するもの
で良いのである。 In this case, the spring force of the emergency operation spring 36 is reduced by the first ball 44 and the second ball 45 and then supported by the solenoid 48. That is, as shown in FIG. 4, the spring force F of the emergency operation spring 36 acts in the axial direction of the operation shaft 25 on the point A of the first ball 44 that fits into the first annular groove 41, and this spring The component force F1 of the force F directed toward the center of the ball is, assuming that there is no friction in each part, F1=Fcosθ 1 Of this F1, the component force F2 in the axial direction of the operating shaft 25
and the contact point B of the first ball 44 with the tapered surface 46
The component force F3 in the direction is: F3=F1sinθ 1 /cosθ 2 F2=F1cosθ 1 −F3sinθ 2 Of the component force F3 on the tapered surface 46, the operation axis 25
The component force F4 in the axial direction is F4= F3sinθ2 , and the total F5 of F2 and F4 is the force in the axial direction of the operating shaft 25 with respect to the contact point C of the second annular groove 43 with the second ball 45. The component force F6 of this F5 directed toward the center point of the second ball 45 is F6=F5 cosθ 3 , and the component force f of this F6 in the direction perpendicular to the operating shaft 25
(f= F6sinθ3 ) acts on the rod 49 of the solenoid 48 in its axial direction,
In the end, when the spring force F of the emergency operation spring 36 is supported by the solenoid 48, the force f is reduced to f=F cos θ 1・cos θ 3・sin θ 3. Therefore, the solenoid 48 is as follows. It suffices to have a relatively small operating force.
この場合、他の実施例として、第５図に示すよ
うに、第１ボール４４をリテーナー５２における
孔５３に嵌めて保持するようにすれば、当該第１
ボール４４に作用する操作軸２５の軸線方向の分
布Ｆ２は、リテーナー５２にて支持されてスリー
ブ４２には作用しないので、前記ｆはより減殺さ
れるのである。 In this case, as another embodiment, if the first ball 44 is fitted into the hole 53 in the retainer 52 and held, as shown in FIG.
The axial distribution F2 of the operating shaft 25 acting on the ball 44 is supported by the retainer 52 and does not act on the sleeve 42, so that the f is further reduced.
そして、異常事態が発生すると、前記ソレノイ
ド４８に通電して、そのロツド４９を後退するこ
とにより、第２ボール４５が第２環状溝４３から
外れてスリーブ４２が摺動し、このスリーブ４２
の摺動に伴つて、第１ボール４４が第１環状溝４
１から外れるので、前記緊急操作用ばね３６の蓄
圧状態が開放されて、この緊急操作用ばね３６の
ばね力にて操作軸２５が摺動することにより、バ
タフライ弁２０の弁体２２が90度回転して流体通
路を閉塞するのであり、この緊急の操作は、第２
ボール４５を第２環状溝４３から外脱するだけで
良いから、その操作ストロークは著しく小さいの
である。 When an abnormal situation occurs, the solenoid 48 is energized and the rod 49 is moved backward, so that the second ball 45 comes out of the second annular groove 43 and the sleeve 42 slides.
As the first ball 44 slides, the first ball 44 slides into the first annular groove 4.
1, the pressure accumulation state of the emergency operation spring 36 is released, and the operating shaft 25 slides under the spring force of the emergency operation spring 36, so that the valve body 22 of the butterfly valve 20 is rotated at 90 degrees. This emergency operation is performed by the second
Since it is only necessary to disengage the ball 45 from the second annular groove 43, the operating stroke is extremely small.
なお、前記閉塞状態のバタフライ弁２０を元の
開状態に戻すには、操作軸２５の他端のスプライ
ン軸３７に被嵌するスリーブ３８にて操作軸２５
を回すことにより、その一端における雄ねじ３０
に螺合する中空軸３１が、緊急操作用ばね３６を
圧縮しつつ第３図において右方向に移動し、当該
中空軸３１における第１環状溝４１に第１ボール
４４が、スリーブ４２における第２環状溝４３に
第２ボール４５が各々嵌まる位置まで移動した時
点で、ソレノイド４８のロツド４９を突出して、
前記の保持状態にしたのち、操作軸２５をスリー
ブ３８を介して更に回すことで、バタフライ弁２
０における弁体２２は開いて、元のセツト状態に
復帰するのである。 In order to return the butterfly valve 20 in the closed state to the original open state, the operating shaft 25 is closed with a sleeve 38 that fits over the spline shaft 37 at the other end of the operating shaft 25.
By turning the external thread 30 at one end of the
The hollow shaft 31, which is threaded into the sleeve 42, moves to the right in FIG. When the second balls 45 have moved to the positions where they fit into the annular grooves 43, the rods 49 of the solenoid 48 are protruded,
After the holding state is set, the butterfly valve 2 is opened by further rotating the operating shaft 25 through the sleeve 38.
At 0, the valve body 22 opens and returns to its original set state.
また、前記実施例は、操作軸２５の雄ねじ３２
に螺合する中空軸３１に第１環状溝４１を設けた
場合であつたが、第１環状溝４１は操作軸２５に
直接的に設けても良く、前記緊急操作用ばね３６
の方向を逆向きにすることによつて、バタフライ
弁２０を異常事態の発生に応じて、緊急遮断する
ことができるのであり、更に、本考案は前記実施
例のバタフライ弁に限らずストツプ弁等他の形式
の弁についても同様に適用できることはいうまで
もない。 Further, in the above embodiment, the male thread 32 of the operating shaft 25 is
In this case, the first annular groove 41 is provided in the hollow shaft 31 that is screwed into the hollow shaft 31, but the first annular groove 41 may be provided directly in the operation shaft 25, and the emergency operation spring 36
By reversing the direction of the butterfly valve 20, the butterfly valve 20 can be shut off in an emergency in response to the occurrence of an abnormal situation.Furthermore, the present invention is not limited to the butterfly valve of the above embodiment, but can also be applied to stop valves, etc. It goes without saying that the invention can be similarly applied to other types of valves.
以上実施例について説明したが本考案は、ケー
シング内に軸方向に摺動自在に軸支した操作軸
を、流体通路中の弁に当該操作軸の軸方向への摺
動によつて前記弁が開閉するように連結し、この
操作軸に前記弁を閉又は開方向に付勢する緊急操
作用ばねを蓄圧状態で装着して成る緊急開閉弁に
おいて、前記操作軸の外周面にはその円周方向に
延びる第１環状溝を設け、この操作軸における第
１環状溝の外側には、前記ケーシング内に操作軸
の軸方向に摺動自在に嵌挿したスリーブを摺動自
在に被嵌し、該スリーブの内周孔を前記緊急操作
用ばねにおけるばね力の方向とは逆方向に向つて
末広がりのテーパ面に形成して、このテーパ面と
前記操作軸との間に第１ボールを、当該第１ボー
ルの一部が前記第１環状溝に嵌まるように挿入す
る一方、前記スリーブの外周面にはその円周方向
に延びる第２環状溝を設け、該第２環状溝に、前
記ケーシングに操作軸の軸方向に摺動自在に保持
するようにして設けた第２ボールを係合し、前記
ケーシングには前記第２ボールを第２環状溝に係
合する位置と、この係合状態から離脱する位置と
に作動させるようにした手段を設けて成る緊急開
閉弁の操作装置であつて、緊急操作用ばねによる
大きなばね力を、第１ボール及び第２ボールの２
つのボールによつて小さな力に減殺して支持でき
て、操作力を著しく軽減できる一方、緊急操作時
には、第２ボールを第２環状溝から外脱する分後
退するだけでよくて操作ストロークが著しく短い
ら、頭記した従来のもののような流体通路中の弁
の開又は閉に対する時間的遅れを短縮できると共
に、操作装置の大型化を回避できるのであり、ま
た、ソレノイド等のアクチエータで操作する場合
においては、当該ソレノイド等のアクチエータと
して、長いストロークを有するものとか、大きい
操作力を有するものとか、従つて、小型で、軽量
且つ安価なソレノイド等のアクチエータを使用で
きる効果を有する。 Although the embodiments have been described above, the present invention has an operating shaft that is supported slidably in the axial direction in the casing, and the valve is inserted into the valve in the fluid passage by sliding the operating shaft in the axial direction. In an emergency opening/closing valve that is connected to open and close and has an emergency operation spring attached to the operation shaft in a pressure-accumulated state that biases the valve in the closing or opening direction, the outer peripheral surface of the operation shaft has a circumferential surface. a first annular groove extending in the axial direction of the operating shaft; a sleeve slidably fitted into the casing in the axial direction of the operating shaft; The inner circumferential hole of the sleeve is formed into a tapered surface that widens toward the opposite direction to the direction of the spring force in the emergency operation spring, and the first ball is inserted between the tapered surface and the operation shaft. A part of the first ball is inserted into the first annular groove, and a second annular groove extending in the circumferential direction is provided on the outer peripheral surface of the sleeve, and the second annular groove is inserted into the second annular groove. A second ball provided to be slidably held in the axial direction of the operating shaft is engaged with the casing, and the casing has a position where the second ball is engaged with the second annular groove, and a state of this engagement. An operating device for an emergency opening/closing valve, which is provided with a means for operating the emergency opening/closing valve to a position where the valve is released from the
The second ball can be supported with a small force and the operating force can be significantly reduced. However, in the event of an emergency operation, it is only necessary to move the second ball backward to disengage from the second annular groove, which significantly reduces the operating stroke. If it is short, it is possible to shorten the time delay for opening or closing the valve in the fluid passage as in the conventional type mentioned above, and it is also possible to avoid increasing the size of the operating device, and when operating with an actuator such as a solenoid. This has the advantage of being able to use actuators such as solenoids that have a long stroke or large operating force, and are therefore small, lightweight, and inexpensive.
第１図は従来の緊急弁の縦断正面図、第２図〜
第５図は本考案の実施例を示し、第２図は縦断正
面図、第３図は第２図の−視断面図、第４図
は第３図の要部拡大図、第５図は別の実施例にお
ける要部拡大図である。
１９…流体通路、２０…バタフライ弁、２２…
弁体、２３…弁軸、２４…ケーシング、２５…操
作軸、３１…中空軸、４１…第１環状溝、４２…
スリーブ、４３…第２環状溝、４４…第１ボー
ル、４５…第２ボール、４６…テーパ面、４８…
ソレノイド、４９…ロツド。
Figure 1 is a longitudinal sectional front view of a conventional emergency valve, Figure 2~
Fig. 5 shows an embodiment of the present invention, Fig. 2 is a longitudinal sectional front view, Fig. 3 is a sectional view taken from the side of Fig. 2, Fig. 4 is an enlarged view of the main part of Fig. 3, and Fig. 5 is a FIG. 7 is an enlarged view of main parts in another embodiment. 19...Fluid passage, 20...Butterfly valve, 22...
Valve body, 23... Valve shaft, 24... Casing, 25... Operating shaft, 31... Hollow shaft, 41... First annular groove, 42...
Sleeve, 43... Second annular groove, 44... First ball, 45... Second ball, 46... Tapered surface, 48...
Solenoid, 49...rod.
Claims (1)
作軸を、流体通路中の弁に当該操作軸の軸方向へ
の摺動によつて前記弁が開閉するように連結し、
この操作軸に前記弁を閉又は開方向に付勢する緊
急操作用ばねを蓄圧状態で装着して成る緊急開閉
弁において、前記操作軸の外周面にはその円周方
向に延びる第１環状溝を設け、この操作軸におけ
る第１環状溝の外側には、前記ケーシング内に操
作軸の軸方向に摺動自在に嵌挿したスリーブを摺
動自在に被嵌し、該スリーブの内周孔を前記緊急
操作用ばねにおけるばね力の方向とは逆方向に向
つて末広がりのテーパ面に形成して、このテーパ
面と前記操作軸との間に第１ボールを、当該第１
ボールの一部が前記第１環状溝に嵌まるように挿
入する一方、前記スリーブの外周面にはその円周
方向に延びる第２環状溝を設け、該第２環状溝
に、前記ケーシングに操作軸の軸方向に摺動自在
に保持するようにして設けた第２ボールを係合
し、前記ケーシングには前記第２ボールを第２環
状溝に係合する位置と、この係合状態から離脱す
る位置とに作動させるようにした手段を設けて成
る緊急開閉弁の操作装置。 An operating shaft supported slidably in the axial direction within the casing is connected to a valve in the fluid passage so that the valve opens and closes by sliding the operating shaft in the axial direction,
In this emergency opening/closing valve, the operating shaft is equipped with an emergency operating spring that biases the valve in the closing or opening direction in a pressure-accumulated state, and the outer peripheral surface of the operating shaft has a first annular groove extending in the circumferential direction. A sleeve is slidably fitted into the casing in the axial direction of the operating shaft, and the sleeve is slidably fitted on the outside of the first annular groove of the operating shaft, and the inner peripheral hole of the sleeve is slidably inserted into the casing. The emergency operation spring is formed with a tapered surface that widens toward the end in a direction opposite to the direction of the spring force, and a first ball is disposed between the tapered surface and the operation shaft.
A portion of the ball is inserted into the first annular groove, while a second annular groove extending in the circumferential direction is provided on the outer peripheral surface of the sleeve, and the second annular groove is inserted into the casing. A second ball provided to be slidably held in the axial direction of the shaft is engaged, and the casing has a position where the second ball is engaged with the second annular groove and a position where the second ball is disengaged from this engaged state. An operating device for an emergency opening/closing valve, comprising a means for operating the emergency opening/closing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP799084U JPS60121573U (en) | 1984-01-23 | 1984-01-23 | Emergency opening/closing valve operating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP799084U JPS60121573U (en) | 1984-01-23 | 1984-01-23 | Emergency opening/closing valve operating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60121573U JPS60121573U (en) | 1985-08-16 |
| JPS626361Y2 true JPS626361Y2 (en) | 1987-02-13 |
Family
ID=30486857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP799084U Granted JPS60121573U (en) | 1984-01-23 | 1984-01-23 | Emergency opening/closing valve operating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60121573U (en) |
-
1984
- 1984-01-23 JP JP799084U patent/JPS60121573U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60121573U (en) | 1985-08-16 |
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