JP2007198463A - On-off valve - Google Patents

On-off valve Download PDF

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Publication number
JP2007198463A
JP2007198463A JP2006016294A JP2006016294A JP2007198463A JP 2007198463 A JP2007198463 A JP 2007198463A JP 2006016294 A JP2006016294 A JP 2006016294A JP 2006016294 A JP2006016294 A JP 2006016294A JP 2007198463 A JP2007198463 A JP 2007198463A
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valve
chamber
valve seat
secondary chamber
primary chamber
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JP2006016294A
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Japanese (ja)
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Shigeo Inaba
繁夫 稲葉
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Tokyo Energy and Systems Inc
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Tokyo Energy and Systems Inc
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Priority to JP2006016294A priority Critical patent/JP2007198463A/en
Publication of JP2007198463A publication Critical patent/JP2007198463A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • F16K1/443—Details of seats or valve members of double-seat valves the seats being in series

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly reliable on-off valve with regard to leakage prevention. <P>SOLUTION: A first valve seat 7 is formed in an opening part on a primary chamber 4 side of a valve hole 6a for communicating the primary chamber 4 and a secondary chamber 5, and a second valve seat 8 is formed in an opening part on the secondary chamber 5 side of the valve hole 6a. A first valve element 13 is provided in the primary chamber 4 for communicating and cutting off the primary chamber 4 and the secondary chamber 5 by separating and seating with respect to the first valve seat 7. A second valve element 16 is provided in the secondary chamber 5 for communicating and cutting off the primary chamber 4 and the secondary chamber 5 by separating and seating with respect to the second valve seat 8. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、玉型弁等の開閉弁に関する。   The present invention relates to an on-off valve such as a ball valve.

一般に、開閉弁は、ハウジングと弁体とを備えている。ハウジングの内部には、一次室、二次室及び一次室と二次室とを隔てる隔壁部が形成されている。隔壁部には、一次室と二次室とを連通させる弁孔が形成されている。弁孔の一端開口部には、弁座が形成されている。一方、弁体は、弁座に対して着座、離間することができるようにハウジングに移動可能に設けられている。弁体が弁座に着座すると、一次室と二次室とが遮断され、開閉弁が閉弁状態になる。弁体が弁座から離間すると、一次室と二次室とが弁孔を介して連通し、開閉弁が開弁状態になる（特許文献１参照）。   In general, the on-off valve includes a housing and a valve body. Inside the housing, a primary chamber, a secondary chamber, and a partition wall that separates the primary chamber and the secondary chamber are formed. A valve hole for communicating the primary chamber and the secondary chamber is formed in the partition wall. A valve seat is formed at one end opening of the valve hole. On the other hand, the valve body is movably provided in the housing so as to be seated and separated from the valve seat. When the valve body is seated on the valve seat, the primary chamber and the secondary chamber are shut off, and the on-off valve is closed. When the valve element is separated from the valve seat, the primary chamber and the secondary chamber communicate with each other through the valve hole, and the open / close valve is opened (see Patent Document 1).

特開２００１−２０８２１７号公報JP 2001-208217 A

上記従来の開閉弁においては、一次室と二次室とを一つの弁体だけで遮断しているため、漏れ防止の信頼性が低いという問題があった。例えば、弁座と弁体との間に異物が噛み込むと、漏れが発生してしまう。   The conventional on-off valve has a problem that the reliability of leakage prevention is low because the primary chamber and the secondary chamber are blocked by only one valve body. For example, when a foreign object bites between the valve seat and the valve body, leakage occurs.

この発明は、上記の問題を解決するために、内部に、一次室、二次室及び上記一次室と上記二次室とを隔てる隔壁部が形成されたハウジングと、このハウジングに移動可能に設けられた弁体とを備え、上記隔壁部には上記一次室と上記二次室とを連通させる弁孔が形成され、この弁孔の一端開口部に弁座が形成され、上記弁体が上記弁座に対して離間、着座することによって上記一次室と上記二次室とが連通、遮断される開閉弁において、上記弁孔の他端開口部に第２弁座が形成され、上記ハウジングに上記第２弁座に対して離間、着座することによって上記一次室と上記二次室とを連通、遮断する第２弁体が移動可能に設けられていることを特徴としている。
この場合、上記第２弁座が上記弁座と軸線を一致させて配置されていることが望ましい。 In order to solve the above problems, the present invention includes a housing in which a primary chamber, a secondary chamber, and a partition wall that separates the primary chamber and the secondary chamber are formed, and the housing is movably provided in the housing. A valve hole for communicating the primary chamber and the secondary chamber is formed in the partition wall, a valve seat is formed at one end opening of the valve hole, and the valve body is In the open / close valve in which the primary chamber and the secondary chamber are communicated and blocked by being separated and seated with respect to the valve seat, a second valve seat is formed at the other end opening of the valve hole, and the housing A second valve body that communicates and blocks the primary chamber and the secondary chamber by being separated from and seated with respect to the second valve seat is provided movably.
In this case, it is desirable that the second valve seat is disposed with its axis aligned with the valve seat.

上記特徴構成を有するこの発明によれば、一次室と二次室とを二つの弁体によって遮断しているので、漏れ防止の信頼性を向上させることができる。例えば、弁体と弁座との間に異物が噛み込んだ場合には、第２弁体が一次室と二次室との間を遮断し、第２弁体と第２弁座との間に異物が噛み込んだ場合には、弁体が一次室と二次室とを遮断する。   According to the present invention having the above-described characteristic configuration, the primary chamber and the secondary chamber are blocked by the two valve bodies, so that the reliability of leakage prevention can be improved. For example, when a foreign object is caught between the valve body and the valve seat, the second valve body shuts off between the primary chamber and the secondary chamber, and between the second valve body and the second valve seat. When a foreign object is caught in the valve body, the valve body shuts off the primary chamber and the secondary chamber.

以下、この発明を実施するための最良の形態を、図面を参照して説明する。
図１は、この発明の一実施の形態を示す縦断面図であり、図２は、その要部の拡大図である。これらの図に示すように、この実施の形態の玉型弁（開閉弁）１は、ハウジング２を備えている。ハウジング２は、本体部３及び上下の雌ねじ部材９，１０を有している。 The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and FIG. 2 is an enlarged view of a main part thereof. As shown in these drawings, the target valve (open / close valve) 1 of this embodiment includes a housing 2. The housing 2 has a main body 3 and upper and lower female screw members 9 and 10.

本体部３の内部には、一次室４、二次室５及び隔壁部６が形成されている。一次室４には、水等の流体が流入口３ａを通って流入する。二次室５内の流体は、流出口３ｂを通って外部に流出する。隔壁部６には、弁孔６ａが形成されている。この弁孔６ａによって一次室４と二次室５とが連通させられている。したがって、一次室４内に流入した流体は、弁孔６ａを通って二次室５に流入する。弁孔６ａは、その軸線を上下方向に向けて形成されているが、軸線を水平方向に向けて形成されていてもよい。   A primary chamber 4, a secondary chamber 5 and a partition wall 6 are formed inside the main body 3. A fluid such as water flows into the primary chamber 4 through the inflow port 3a. The fluid in the secondary chamber 5 flows out through the outlet 3b. A valve hole 6 a is formed in the partition wall 6. The primary chamber 4 and the secondary chamber 5 are communicated with each other by the valve hole 6a. Therefore, the fluid that has flowed into the primary chamber 4 flows into the secondary chamber 5 through the valve hole 6a. The valve hole 6a is formed with its axis line oriented in the vertical direction, but may be formed with its axis line oriented in the horizontal direction.

弁孔６ａの上端開口部（一端開口部）には、下方へ向かって小径になるテーパ状の第１弁座（弁座）７が形成されている。弁孔６ａの下端開口部には、上方へ向かって小径になる第２弁座８が形成されている。第２弁座８は、その軸線を第１弁座７の軸線と一致させて配置されている。第２弁座８は、第１弁座７の軸線上に配置することなく、他の軸線上に配置してもよい。その場合、第２弁座８は、その軸線が第１弁座７の軸線と平行になるように配置するのが望ましい。   A tapered first valve seat (valve seat) 7 having a smaller diameter downward is formed at the upper end opening (one end opening) of the valve hole 6a. A second valve seat 8 having a smaller diameter upward is formed at the lower end opening of the valve hole 6a. The second valve seat 8 is arranged such that its axis coincides with the axis of the first valve seat 7. The second valve seat 8 may be arranged on another axis without being arranged on the axis of the first valve seat 7. In that case, it is desirable to arrange the second valve seat 8 so that its axis is parallel to the axis of the first valve seat 7.

本体部２の上面には、上雌ねじ部材９がボルト及びナット等の固定手段（図示せず）によって固定されている。上雌ねじ部材９は、雌ねじ孔９ａを有しており、その雌ねじ孔９ａの軸線を第１、第２弁座７，８の軸線と一致させて配置されている。本体部２の下面には、下雌ねじ部材１０がボルト及びナット等の固定手段（図示せず）によって固定されている。下雌ねじ部材１０は、上雌ねじ部材９と上下対称に形成されており、雌ねじ孔１０ａを有している。そして、雌ねじ部１０ａの軸線を第１、第２弁座７，８の軸線と一致させて配置されている。   An upper female screw member 9 is fixed to the upper surface of the main body 2 by fixing means (not shown) such as bolts and nuts. The upper female screw member 9 has a female screw hole 9 a, and the axial line of the female screw hole 9 a is arranged so as to coincide with the axial lines of the first and second valve seats 7 and 8. A lower female screw member 10 is fixed to the lower surface of the main body 2 by fixing means (not shown) such as bolts and nuts. The lower female screw member 10 is formed vertically symmetrical with the upper female screw member 9 and has a female screw hole 10a. And it arrange | positions so that the axis line of the internal thread part 10a may correspond with the axis line of the 1st, 2nd valve seats 7 and 8. FIG.

上雌ねじ部材９の雌ねじ孔９ａには、第１弁軸１１が螺合されている。この第１弁軸１１の上端部は、雌ねじ部材９から上方に突出しており、そこには第１ハンドル１２が設けられている。第１弁軸１１の下端部は、上雌ねじ部材９及び本体部３の上壁部を貫通して二次室５内に入り込んでいる。二次室５内に入り込んだ第１弁軸１１の下端部には、第１弁体（弁体）１３が第１弁軸１１の軸線を中心として回動可能に、かつ上下方向へ移動不能に取り付けられている。第１弁体１３は、その軸線を第１弁座７の軸線と一致させて配置されている。したがって、第１ハンドル１２によって第１弁軸１１を回動させ、第１弁体１３を上下方向へ移動させると、第２弁体１３が第１弁座７に対して着座、離間する。第１弁体１３が第１弁座７に着座すると、弁孔６ａが閉じられ、一次室４と二次室５とが第１弁体１３によって遮断される。第１弁体１３が第１弁座７から離間すると、弁孔６ａが開かれ、一次室４と二次室５とが弁孔６ａを介して連通する。   The first valve shaft 11 is screwed into the female screw hole 9 a of the upper female screw member 9. An upper end portion of the first valve shaft 11 protrudes upward from the female screw member 9, and a first handle 12 is provided there. The lower end portion of the first valve shaft 11 passes through the upper female screw member 9 and the upper wall portion of the main body portion 3 and enters the secondary chamber 5. At the lower end of the first valve shaft 11 that has entered the secondary chamber 5, the first valve body (valve body) 13 is rotatable about the axis of the first valve shaft 11 and is not movable in the vertical direction. Is attached. The first valve body 13 is arranged with its axis line coincided with the axis line of the first valve seat 7. Accordingly, when the first valve shaft 11 is rotated by the first handle 12 and the first valve body 13 is moved in the vertical direction, the second valve body 13 is seated and separated from the first valve seat 7. When the first valve body 13 is seated on the first valve seat 7, the valve hole 6 a is closed, and the primary chamber 4 and the secondary chamber 5 are blocked by the first valve body 13. When the first valve body 13 is separated from the first valve seat 7, the valve hole 6a is opened, and the primary chamber 4 and the secondary chamber 5 communicate with each other through the valve hole 6a.

下雌ねじ部材１０の雌ねじ孔１０ａには、第２弁軸１４が螺合されている。この第２弁軸１４の下端部は、下雌ねじ部材１０から下方に突出しており、そこには第２ハンドル１５が設けられている。第２弁軸１４の上端部は、下雌ねじ部材１０及び本体部３の下壁部を貫通して一次室４内に入り込んでいる。一次室４内に入り込んだ第２弁軸１４の上端部には、第２弁体１６が第２弁軸１４の軸線を中心として回動可能に、かつ上下方向へ移動不能に取り付けられている。第２弁体１６は、その軸線を第２弁座８の軸線と一致させて配置されている。したがって、第２ハンドル１５によって第２弁軸１４を回動させ、第２弁体１６を上下方向へ移動させると、第２弁体１６が第２弁座８に対して着座、離間する。第２弁体１６が第２弁座８に着座すると、弁孔６ａが閉じられ、一次室４と二次室５とが第２弁体１６によって遮断される。第２弁体１６が第２弁座８から離間すると、弁孔６ａが開かれ、一次室４と二次室５とが弁孔６ａを介して連通する。   The second valve shaft 14 is screwed into the female screw hole 10 a of the lower female screw member 10. A lower end portion of the second valve shaft 14 protrudes downward from the lower female screw member 10, and a second handle 15 is provided there. The upper end portion of the second valve shaft 14 penetrates the lower female screw member 10 and the lower wall portion of the main body portion 3 and enters the primary chamber 4. A second valve body 16 is attached to the upper end portion of the second valve shaft 14 that has entered the primary chamber 4 so as to be rotatable about the axis of the second valve shaft 14 and not movable in the vertical direction. . The second valve body 16 is arranged such that its axis coincides with the axis of the second valve seat 8. Accordingly, when the second valve shaft 14 is rotated by the second handle 15 and the second valve body 16 is moved in the vertical direction, the second valve body 16 is seated and separated from the second valve seat 8. When the second valve body 16 is seated on the second valve seat 8, the valve hole 6 a is closed, and the primary chamber 4 and the secondary chamber 5 are blocked by the second valve body 16. When the second valve body 16 is separated from the second valve seat 8, the valve hole 6a is opened, and the primary chamber 4 and the secondary chamber 5 communicate with each other through the valve hole 6a.

上記構成の玉型弁１は、第２弁体１６を第２弁座８から離間させた状態において、第１弁体１３を第１弁座７に対して着座、離間させることにより、あるいは第１弁体１３を第１弁座７から離間させた状態において、第２弁体１６を第２弁座８に対して着座、離間させることにより、従来の玉型弁と同様に使用することができる。   The ball valve 1 having the above-described configuration can be obtained by seating and separating the first valve body 13 with respect to the first valve seat 7 in a state where the second valve body 16 is separated from the second valve seat 8, or When the first valve body 13 is separated from the first valve seat 7, the second valve body 16 is seated and separated from the second valve seat 8, so that it can be used in the same manner as a conventional ball valve. it can.

また、第１弁体１３を第１弁座７に対して着座、離間させるとともに、第２弁体１６を第２弁座８に対して着座、離間させることも可能である。そのようにして使用した場合には、一次室４と二次室５とが二つの弁体１３，１６によって遮断されるので、漏れに対する信頼性を向上させることができる。例えば、第１弁体１３と第１弁座７との間に異物が噛み込んだとしても、第２弁体１５が一次室４と二次室５とを遮断する。逆に、第２弁体１６と第２弁座８との間に異物が噛み込んだ場合には、第１弁体１３が一次室４と二次室５とを遮断する。これによって、漏れを確実に防止することができる。   In addition, the first valve body 13 can be seated and separated from the first valve seat 7, and the second valve body 16 can be seated and separated from the second valve seat 8. When used in such a manner, the primary chamber 4 and the secondary chamber 5 are blocked by the two valve bodies 13 and 16, so that the reliability of leakage can be improved. For example, even if a foreign object is caught between the first valve body 13 and the first valve seat 7, the second valve body 15 blocks the primary chamber 4 and the secondary chamber 5. Conversely, when a foreign object is caught between the second valve body 16 and the second valve seat 8, the first valve body 13 blocks the primary chamber 4 and the secondary chamber 5. As a result, leakage can be reliably prevented.

また、この発明に係る玉型弁１によれば、第１、第２弁体１３，１６の第１、第２弁座７，８に対する接触圧を過度に大きくすることなく、一次室４と二次室５とを高い密封性をもって遮断することができる。
すなわち、従来の玉型弁のように、第１、第２弁体１３，１６のうちのいずれか一方だけを採用したものとしたとき、例えば第１弁体１３だけを採用したものとしたときには、一次室４と二次室５とを高い密封性をもって遮断するためには、第１弁体１３を第１弁座７に強く押し付けなければならない。しかし、第１弁体１３を第１弁座７に過度に強く押し付けると、両者の接触面に傷等が発生し、それ以後の漏れの原因になることがある。その点、この発明の玉型弁１では、一次室４と二次室５とを二つの弁体１３，１６によって遮断しているので、弁体１３，１６の弁座７，８に対する押圧力を過度に大きくすることなく、一次室４と二次室５との間を高い密封性をもって遮断することができる。 Further, according to the ball valve 1 according to the present invention, the primary chamber 4 and the first valve body 13, 16 can be connected to the primary chamber 4 without excessively increasing the contact pressure with respect to the first and second valve seats 7, 8. The secondary chamber 5 can be shut off with high sealing performance.
That is, when only one of the first and second valve bodies 13 and 16 is employed as in the conventional ball valve, for example, only the first valve body 13 is employed. In order to shut off the primary chamber 4 and the secondary chamber 5 with high sealing performance, the first valve body 13 must be strongly pressed against the first valve seat 7. However, if the first valve body 13 is pressed too strongly against the first valve seat 7, scratches or the like may occur on the contact surfaces of the both, which may cause leakage thereafter. In that respect, in the ball valve 1 of the present invention, the primary chamber 4 and the secondary chamber 5 are shut off by the two valve bodies 13, 16, so that the pressing force of the valve bodies 13, 16 against the valve seats 7, 8 is Without being excessively large, the primary chamber 4 and the secondary chamber 5 can be blocked with high sealing performance.

上記のように、この発明に係る玉型弁１は、一次室４と二次室とを高い密封性をもって遮断することができ、漏れ防止に対する信頼性は従来の玉型弁を直列に二つ設けた場合とほぼ同等である。したがって、従来の玉型弁に代えてこの発明に係る玉型弁１を用いる場合には、管路中に直列に配置された二つの玉型弁に代えて一つの玉型弁１だけで足りる。したがって、狭い空間にも玉型弁１を設置することができる。   As described above, the ball valve 1 according to the present invention can shut off the primary chamber 4 and the secondary chamber with high sealing performance, and the reliability for preventing leakage is two in series with conventional ball valves. It is almost equivalent to the case where it is provided. Therefore, when using the ball valve 1 according to the present invention in place of the conventional ball valve, only one ball valve 1 is sufficient instead of the two ball valves arranged in series in the pipe. . Accordingly, the ball valve 1 can be installed in a narrow space.

この発明の一実施の形態を示す縦断面図である。It is a longitudinal cross-sectional view which shows one embodiment of this invention. 同実施の形態の要部を示す縦断面図である。It is a longitudinal cross-sectional view which shows the principal part of the embodiment.

符号の説明Explanation of symbols

１ 玉型弁（開閉弁）
２ ハウジング
４ 一次室
５ 二次室
６ 隔壁部
６ａ 弁孔
７ 第１弁座（弁座）
８ 第２弁座
１３ 第１弁体（弁体）
１６ 第２弁体 1 Ball valve (open / close valve)
2 Housing 4 Primary chamber 5 Secondary chamber 6 Bulkhead 6a Valve hole 7 First valve seat (valve seat)
8 Second valve seat 13 First valve body (valve body)
16 Second valve body

Claims (2)

内部に、一次室、二次室及び上記一次室と上記二次室とを隔てる隔壁部が形成されたハウジングと、このハウジングに移動可能に設けられた弁体とを備え、上記隔壁部には上記一次室と上記二次室とを連通させる弁孔が形成され、この弁孔の一端開口部に弁座が形成され、上記弁体が上記弁座に対して離間、着座することによって上記一次室と上記二次室とが連通、遮断される開閉弁において、
上記弁孔の他端開口部に第２弁座が形成され、上記ハウジングに上記第２弁座に対して離間、着座することによって上記一次室と上記二次室とを連通、遮断する第２弁体が移動可能に設けられていることを特徴とする開閉弁。 The housing includes a primary chamber, a secondary chamber, a housing in which a partition wall separating the primary chamber and the secondary chamber is formed, and a valve body movably provided in the housing. A valve hole for communicating the primary chamber and the secondary chamber is formed, a valve seat is formed at one end opening of the valve hole, and the valve body is separated from and seated on the valve seat. In the on-off valve in which the chamber and the secondary chamber are communicated and blocked,
A second valve seat is formed at the other end opening of the valve hole, and a second valve seat communicates with and cuts off the primary chamber and the secondary chamber by being separated from and seated on the housing with respect to the second valve seat. An on-off valve characterized in that the valve body is movably provided. 上記第２弁座が上記弁座と軸線を一致させて配置されていることを特徴とする請求項１に記載の開閉弁。 2. The on-off valve according to claim 1, wherein the second valve seat is disposed so that an axis thereof coincides with the valve seat.
JP2006016294A 2006-01-25 2006-01-25 On-off valve Pending JP2007198463A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012508849A (en) * 2008-11-12 2012-04-12 フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー Fluid valve with integrated safety shut-off
JP2020190284A (en) * 2019-05-22 2020-11-26 株式会社テイエルブイ Valve mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS515036U (en) * 1974-06-28 1976-01-14
JPS57195970A (en) * 1981-05-26 1982-12-01 Ishikawajima Harima Heavy Ind Co Ltd Globe valve
JPS60192172A (en) * 1984-03-13 1985-09-30 Toshiba Corp Open-and-close valve
JPS60189670U (en) * 1984-05-26 1985-12-16 三菱重工業株式会社 double seal valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS515036U (en) * 1974-06-28 1976-01-14
JPS57195970A (en) * 1981-05-26 1982-12-01 Ishikawajima Harima Heavy Ind Co Ltd Globe valve
JPS60192172A (en) * 1984-03-13 1985-09-30 Toshiba Corp Open-and-close valve
JPS60189670U (en) * 1984-05-26 1985-12-16 三菱重工業株式会社 double seal valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012508849A (en) * 2008-11-12 2012-04-12 フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー Fluid valve with integrated safety shut-off
JP2020190284A (en) * 2019-05-22 2020-11-26 株式会社テイエルブイ Valve mechanism
JP7335584B2 (en) 2019-05-22 2023-08-30 株式会社テイエルブイ valve mechanism

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