JP2002071032A - Gas cock - Google Patents
Gas cockInfo
- Publication number
- JP2002071032A JP2002071032A JP2000266391A JP2000266391A JP2002071032A JP 2002071032 A JP2002071032 A JP 2002071032A JP 2000266391 A JP2000266391 A JP 2000266391A JP 2000266391 A JP2000266391 A JP 2000266391A JP 2002071032 A JP2002071032 A JP 2002071032A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- gas cock
- switching valve
- ball
- side joint
- 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.)
- Granted
Links
Landscapes
- Valve Housings (AREA)
- Taps Or Cocks (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、ガスコック本体部
とこれに連接する継手部との構造、及びこれらの部位で
形成される流路断面に特徴のあるガスコックに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a gas cock main body and a joint connected thereto, and a gas cock characterized by a cross section of a flow passage formed by these parts.
【０００２】[0002]
【従来の技術】都市ガスやＬＰＧ等のガス流体のために
配設されるガス管にはガスコックが用いられる。そし
て、このガスコックは、ガス管が接続される入口側継手
部及び出口側継手部を備えるとともに、例えばボール型
切換弁が配設されるガスコック本体部を備え、ハンドル
やレバーの操作に連動して回動する上記切換弁により、
所定流量のガス流体を連通させたり、不通にさせたりで
きるようになっている。図２は、従来のストレート型１
／２インチガスコック１００の一部断面図であり、この
ガスコック１００は、同図に示すように、ガス流体の流
入管（図示せず）が接続される入口側継手部１０１と、
ガス流体の流出管（図示せず）が接続される出口側継手
部１０２と、ガス流体の流れを連通・不通にするための
ボール型切換弁１０３が配設されるガスコック本体部１
０４とを備えており、入口側継手１０１はガスコック本
体部１０４と一体成形される一方、出口側継手部１０２
はガスコック本体部１０４に螺刻されたネジ穴１０４ａ
に螺合する態様をなし、ガスコック本体部１０４とは別
体で構成されている。このようなガスコック１００で
は、ガスコック本体部１０４の上方に配設されるハンド
ル１０５を回転操作してこれを「開」状態にすると、こ
の操作に連動して回転する上記切換弁１０３のボール１
０３ａに穿設された貫通穴を介して、入口側継手部１０
１内の流路が出口側継手部１０２内の流路に連通し、こ
れら流路をガス流体が流れる。ところで、当該ガス流体
の流量は、ガス栓検定規格によって決められており、こ
こで例示した１／２インチガスコック１００では、入口
側と出口側との圧力１０ｍｍＡｑのとき６０００（リッ
トル／ｈ）でなければならない。2. Description of the Related Art A gas cock is used for a gas pipe provided for a gas fluid such as city gas or LPG. The gas cock includes an inlet-side joint portion and an outlet-side joint portion to which a gas pipe is connected, and includes, for example, a gas cock main body in which a ball-type switching valve is disposed, and is interlocked with the operation of a handle or a lever. By the switching valve which rotates,
A predetermined flow rate of the gas fluid can be communicated or interrupted. FIG. 2 shows a conventional straight type 1
FIG. 2 is a partial cross-sectional view of a 1/2 inch gas cock 100. As shown in FIG. 1, the gas cock 100 has an inlet-side joint portion 101 to which an inflow pipe (not shown) for a gas fluid is connected.
A gas cock main body 1 in which an outlet-side joint portion 102 to which an outflow pipe (not shown) for gas fluid is connected, and a ball-type switching valve 103 for connecting and disconnecting the flow of gas fluid are provided.
And the inlet joint 101 is formed integrally with the gas cock main body 104 while the outlet joint 102
Is a screw hole 104a threaded in the gas cock main body 104
And is formed separately from the gas cock main body 104. In such a gas cock 100, when the handle 105 provided above the gas cock main body 104 is rotated to open the handle 105, the ball 1 of the switching valve 103 that rotates in conjunction with this operation is rotated.
03a through the through-hole drilled in the inlet joint 10
1 communicates with the channels in the outlet side joint portion 102, and the gas fluid flows through these channels. By the way, the flow rate of the gas fluid is determined by the gas plug certification standard. In the 1/2 inch gas cock 100 exemplified here, the flow rate must be 6000 (liter / h) when the pressure on the inlet side and the outlet side is 10 mmAq. Must.
【０００３】[0003]
【発明が解決しようとする課題】このようにして所定の
ガスコックでは所定の流量が確保されるようにすること
が決められているが、ボール型切換弁を配設するガスコ
ックの場合、切換弁のボール径等の大きさは決められて
いるわけではなく、そのために、上述の１／２インチガ
スコックでは、従来からボールの外径が２０．５ｍｍ
で、その貫通穴が１３．５ｍｍのものが用いられてお
り、したがって、この種のガスコックにおいては、出口
側継手部とガスコック本体部とは別体に構成され、切換
弁をガスコック本体部に配設してから出口側継手部をガ
スコック本体部に取り付けていた。しかるに、両者をそ
れぞれ別体に構成すると、部品管理等が煩雑になること
は言うまでもなく、組み付け作業の際には、両者の接続
部で漏れが生じたり、脱落が生じたりすることがないよ
うにしなければならない煩わしさがある。上述のように
ボール径が２０．５ｍｍの切換弁であると、入口側継手
部方向の長さ（図２のＡ寸法）をあまり大きくできない
こともあって、入口側継手部の断面流路と上記ボールに
穿設された貫通穴の断面流路とにおける断面流路の変化
が急縮小にならざるを得ず、そのために縮流によるエネ
ルギー損失が発生し、所定流量のガス流体の流れを得る
のに効率的でないという問題がある。In this manner, it is determined that a predetermined flow rate is ensured in a predetermined gas cock. However, in the case of a gas cock provided with a ball-type switching valve, the switching valve is not provided. The size of the ball diameter and the like is not fixed, and therefore, in the above 1/2 inch gas cock, the outside diameter of the ball has conventionally been 20.5 mm.
The gas cock has a through hole of 13.5 mm. Therefore, in this type of gas cock, the outlet side joint portion and the gas cock main body are configured separately, and the switching valve is disposed in the gas cock main body. After installation, the outlet side joint was attached to the gas cock main body. However, if both parts are configured separately, it goes without saying that parts management etc. become complicated, and during assembly work, it is necessary to prevent leakage or dropout at the connection part of both parts. There is an annoyance that must be done. When the switching valve has a ball diameter of 20.5 mm as described above, the length (dimension A in FIG. 2) in the direction of the inlet-side joint portion may not be so large, and the cross-sectional flow path of the inlet-side joint portion may be reduced. The change in the cross-sectional flow path between the cross-sectional flow path of the through hole formed in the ball and the cross-sectional flow path must be sharply reduced, so that an energy loss occurs due to the contraction, and a gas flow of a predetermined flow rate is obtained. There is a problem that it is not efficient.
【０００４】本発明の目的は、所定流量のガス流体の流
れを確保しつつ、ボール型切換弁が配設されたガスコッ
ク本体部に入口側及び出口側継手部が一体成形されたガ
スコックを提供することにある。An object of the present invention is to provide a gas cock in which an inlet side and an outlet side joint are integrally formed with a gas cock main body in which a ball type switching valve is disposed, while ensuring a predetermined flow rate of gas fluid. It is in.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明の請求項１に係るガスコックは、ガス流体の
流入管が接続される入口側継手部と、ガス流体の流出管
が接続される出口側継手部と、ガス流体の流れを連通・
不通にするためのボール型切換弁が配設されるガスコッ
ク本体部とが一体に成形されたもので、出口側継手部か
らガスコック本体部に至る断面の最狭部が、切換弁のボ
ール径より僅かに大きく、且つ、入口側継手部とガスコ
ック本体部との連接部における断面が、ガス流体の流れ
方向に緩やかに縮小するように形成されている。かかる
構成のガスコックによれば、組み付けの際には、従来の
ものより小型化された切換弁を出口側継手部から挿入し
て組み付けることができ、上述した煩わしさが解消され
る。また、従来のガスコックで得られる流量と同程度の
流量を得るのに、切換弁の小型化に対応して、上記連接
部の断面を緩やかに縮小する形状にすることにより、当
該部位でのエネルギー損失を抑え、所定の圧力差の下で
の所定流量を確保できるようにしている。According to a first aspect of the present invention, there is provided a gas cock in which an inlet-side joint to which a gas fluid inflow pipe is connected and a gas fluid outflow pipe are connected. The outlet joint is connected to the gas fluid flow.
The gas cock body in which the ball-type switching valve for disposing is disposed is integrally formed with the gas cock body, and the narrowest section of the cross section from the outlet side joint to the gas cock body is smaller than the ball diameter of the switching valve. The cross section of the connecting portion between the inlet side joint portion and the gas cock main body portion is slightly larger and is formed so as to gradually reduce in the flow direction of the gas fluid. According to the gas cock having such a configuration, at the time of assembling, a switching valve smaller than the conventional one can be inserted and assembled from the outlet side joint portion, and the above-mentioned troublesomeness is eliminated. In addition, in order to obtain a flow rate comparable to that obtained with a conventional gas cock, the cross-section of the connecting portion is gently reduced in size in accordance with the miniaturization of the switching valve, so that the energy at the portion is reduced. The loss is suppressed and a predetermined flow rate under a predetermined pressure difference can be secured.
【０００６】また、本発明の請求項２に係るガスコック
は、出口側継手部からガスコック本体部に至る断面の所
定部位に配設されるボールパッキン止めで、その最大径
部が、出口側継手部のテーパ雌ねじの最小内径部より僅
かに大きく形成される一方、その最大径部の厚みがこの
テーパ雌ねじのピッチ長さより小さく形成されている。
通常、ボールパッキン止めの最大径部がテーパ雌ねじの
最小内径部より僅かにでも大きいと、ボールパッキン止
めは、テーパ雌ねじの内径を挿通して上記所定部位に配
設することが物理的にできない。しかるに、本ガスコッ
クでは、上記最大径部の厚みをテーパ雌ねじのピッチ長
さより小さくし、当該最大径部をこのテーパ雌ねじ溝に
沿わせる態様でボールパッキン止めを回転させながら挿
入していくと、上記所定部位に配設することが可能にな
る。これにより、小型化された切換弁に対応して、出口
側継手部からガスコック本体部に至る各断面の穴径が小
さくなっても、このような切換弁のボールパッキン止め
を、出口側継手部から挿入して組み付けることができ
る。A gas cock according to a second aspect of the present invention is a ball packing stop disposed at a predetermined portion of a cross section from the outlet side joint portion to the gas cock main body portion, the largest diameter portion of which is provided at the outlet side joint portion. Is formed slightly larger than the minimum inner diameter portion of the tapered female screw, while the thickness of the maximum diameter portion is formed smaller than the pitch length of the tapered female screw.
Normally, if the maximum diameter portion of the ball packing stop is slightly larger than the minimum inner diameter portion of the tapered female screw, the ball packing stop cannot physically be disposed at the above-described predetermined portion through the inner diameter of the tapered female screw. However, in the present gas cock, the thickness of the maximum diameter portion is made smaller than the pitch length of the tapered female screw, and the maximum diameter portion is inserted while rotating the ball packing stopper so as to be along the tapered female screw groove. It becomes possible to arrange at a predetermined site. Accordingly, even if the hole diameter of each cross section from the outlet joint portion to the gas cock main body portion is reduced corresponding to the miniaturized switching valve, the ball packing of such a switching valve can be stopped by the outlet side joint portion. Can be inserted and assembled.
【０００７】また、本発明の請求項３に係るガスコック
は、緩やかに縮小してなる連接部の断面が、テーパ角５
０〜７０度のテーパで形成されるものである。当該テー
パ角は、小さくなればなるほどエネルギー損失を抑える
ことができるが、上述の通り入口側継手部方向の長さを
あまり大きくはできず、入口側継手部方向の長さをほぼ
従来通りにする制約の下では、上記角度に形成すること
が、所定の流量を確保する上で好ましい。In the gas cock according to a third aspect of the present invention, the cross section of the connecting portion that is gradually reduced has a taper angle of 5 degrees.
It is formed with a taper of 0 to 70 degrees. As the taper angle becomes smaller, the energy loss can be reduced as described above. However, as described above, the length in the inlet side joint portion direction cannot be made so large, and the length in the inlet side joint portion direction becomes almost the same as the conventional case. Under the restrictions, the formation at the above angle is preferable for securing a predetermined flow rate.
【０００８】[0008]
【発明の実施の形態】本発明の実施の形態の一例を図１
を参照して説明する。本ガスコック１は、従来例で採り
上げたガスコック１００に対応するストレート型１／２
インチガスコックであり、図１に示すように、ガス流体
の流出管（図示せず）が接続される出口側継手部２と、
ガス流体の流入管（図示せず）が接続される入口側継手
部３と、ガス流体の流れを連通・不通にするためのボー
ル型切換弁４が配設されるガスコック本体部５とを備
え、入口側継手部３のみならず出口側継手部２がガスコ
ック本体部５と一体成形されている。FIG. 1 shows an example of an embodiment of the present invention.
This will be described with reference to FIG. This gas cock 1 is a straight type 1/2 corresponding to the gas cock 100 taken up in the conventional example.
An outlet-side joint portion 2 to which an inch gas cock is connected as shown in FIG.
An inlet-side joint portion 3 to which an inflow pipe (not shown) for gas fluid is connected, and a gas cock main body portion 5 provided with a ball-type switching valve 4 for connecting and disconnecting the flow of gas fluid. The outlet joint 2 as well as the inlet joint 3 are integrally formed with the gas cock main body 5.
【０００９】ガスコック本体部５内に配設された切換弁
４のボール（ボール径が１７．８ｍｍ）２０に対し、そ
の球面を保持する態様で一対のうちのボールパッキン６
ａがガスコック本体部５の凹部に，また、出口側継手部
２の方に位置するもう一方のボールパッキン６ｂがボー
ルパッキン止め７の凹部に嵌入される。そして、このボ
ール２０に穿設された貫通穴（穴径が１１．１ｍｍ）２
０ａが、ボールパッキン６ａを介して入口側継手部３
に、また、ボールパッキン６ｂ及びボールパッキン止め
７を介して出口側継手部２に連通している。しかるに、
ボールパッキン止め７は、当該ボールパッキン止め７の
雄ねじ７ａが、出口側継手部２からガスコック本体部５
に至る断面の所定部位、本実施の形態では、出口側継手
部２とガスコック本体部５との略連接部に螺刻された雌
ねじ（内径Ａが１７．８５ｍｍ）２１に螺合するととも
に、当該ボールパッキン止め７の鍔（最大径部）７ｂ
が、上記雌ねじ２１の一方の終端から立設された側壁に
当接してボールパッキン６ｂを支持している。但し、鍔
７ｂの外径Ｂが１８．７ｍｍで、鍔７ｂの厚みＣが０．
６ｍｍである。尚、切換弁４のボール２０には、後述の
凹溝２０ｂが穿設され、この凹溝２０ｂの溝幅の中心線
を対称にして平取り加工された面を貫通する態様で上記
貫通穴２０ａが穿設されている。The ball (ball diameter: 17.8 mm) 20 of the switching valve 4 disposed in the gas cock main body 5 is provided with a pair of ball packings 6 in such a manner as to maintain the spherical surface.
a is fitted into the concave portion of the gas cock main body portion 5, and the other ball packing 6b located at the outlet side joint portion 2 is fitted into the concave portion of the ball packing stopper 7. Then, a through hole (having a hole diameter of 11.1 mm) formed in the ball 20 2
0a is connected to the inlet-side joint 3 via the ball packing 6a.
In addition, it communicates with the outlet side joint portion 2 via a ball packing 6b and a ball packing stopper 7. However,
The ball packing stopper 7 is configured such that the male screw 7a of the ball packing stopper 7 is connected to the gas cock main body part 5 from the outlet side joint part 2.
In the present embodiment, a predetermined portion of the cross section leading to the female screw (inner diameter A is 17.85 mm) 21 is screwed into a substantially connected portion between the outlet side joint portion 2 and the gas cock main body portion 5. Flange (maximum diameter part) 7b of ball packing stopper 7
However, the ball packing 6b is supported by abutting against a side wall erected from one end of the female screw 21. However, the outer diameter B of the flange 7b is 18.7 mm, and the thickness C of the flange 7b is 0.1 mm.
6 mm. The ball 20 of the switching valve 4 is provided with a groove 20b to be described later, and the through hole 20a is formed in such a manner that the center line of the groove width of the groove 20b is symmetrical and penetrates a flat-plated surface. Are drilled.
【００１０】出口側継手部２内の、上記流出管を接続す
るところには、１／２管用テーパ雌ねじ２ａが螺刻さ
れ、このテーパ雌ねじ２ａの最小内径部Ｄは１８．２ｍ
ｍであり、そのピッチ長さが１．８１ｍｍである。した
がって、本実施の形態では、出口側継手部２からガスコ
ック本体部５に至る断面の最狭部は、上記雌ねじ２１の
内径Ａであるが、この内径Ａが切換弁４のボール２０の
外径より僅かに大きいために、当該切換弁４を、出口側
継手部２からガスコック本体部５内に挿入して組み付け
ることができる。また、ボールパッキン止め７の鍔部
（最大径部）７ｂの外径Ｂが、出口側継手部２のテーパ
雌ねじ２ａの最小内径部Ｄより僅かに大きく形成されて
おり、ボールパッキン止め７を、このテーパ雌ねじ２ａ
を挿通して雌ねじ２１に螺合することが物理的にできな
いが、上記鍔部７ｂの厚みＣをテーパ雌ねじ２ａのピッ
チ長さより小さくし、当該鍔部７ｂをこのテーパ雌ねじ
２ａのねじ溝に沿わせる態様でボールパッキン止め７を
回転させながら挿入していくと、雌ねじ２１に螺合させ
ることが可能になる。一方、入口側継手部３内の、上記
流入管を接続するところには、同様の１／２管用テーパ
雌ねじ３ａが螺刻され、入口側継手部とガスコック本体
部との連接部における断面、本実施の形態では、テーパ
雌ねじ３ａのねじ底からボールパッキン６ａの貫通穴に
通じる部位に、ガス流体の流れ方向に緩やかにそのテー
パ角を６０度とする流路断面８を形成し、この流路断面
８がボールパッキン６ａの貫通穴を介してボール２０の
貫通穴２０ａに連通している。[0010] A tapered female screw 2a for 1/2 pipe is threaded in the outlet side joint portion 2 where the above outflow pipe is connected, and the minimum inner diameter portion D of the tapered female screw 2a is 18.2 m.
m, and the pitch length is 1.81 mm. Therefore, in the present embodiment, the narrowest portion of the cross section from the outlet side joint portion 2 to the gas cock main body portion 5 is the inner diameter A of the female screw 21, which is the outer diameter of the ball 20 of the switching valve 4. Since it is slightly larger, the switching valve 4 can be inserted into the gas cock main body 5 from the outlet side joint 2 and assembled. The outer diameter B of the flange portion (maximum diameter portion) 7b of the ball packing stop 7 is formed slightly larger than the minimum inner diameter portion D of the tapered female screw 2a of the outlet side joint portion 2. This taper female screw 2a
Can not be physically screwed into the female screw 21 by passing through, but the thickness C of the flange 7b is made smaller than the pitch length of the tapered female screw 2a, and the flange 7b is formed along the thread groove of the tapered female screw 2a. When the ball packing stopper 7 is inserted while rotating in such a manner that the ball packing stopper 7 is screwed into the female screw 21. On the other hand, the same half taper female screw 3a for a 1/2 pipe is threaded at a place where the above-mentioned inflow pipe is connected in the inlet side joint part 3, and a cross section at the connecting part between the inlet side joint part and the gas cock main body part, and In the embodiment, a flow path cross section 8 having a taper angle of 60 degrees is formed gently in the flow direction of the gas fluid at a portion communicating from the thread bottom of the tapered female screw 3a to the through hole of the ball packing 6a. The cross section 8 communicates with the through hole 20a of the ball 20 via the through hole of the ball packing 6a.
【００１１】ところで、ガスコック本体部５には、その
下軸部９ａを上記凹溝２０ｂに係止した可動部材９が配
設され、この可動部材９の上軸部９ｂには、ハンドル１
０がビスによって取り付けられており、これにより、切
換弁４は、ハンドル１０の回転操作に連動して回転す
る。したがって、ハンドル１０を「開」状態にすると、
入口側継手部３の流路が上記貫通穴２０ａを介して出口
側継手部２の流路に連通し、これらの流路を所定流量の
ガス流体が図１の矢印方向に流れることになる。The gas cock main body 5 is provided with a movable member 9 having a lower shaft 9a engaged with the concave groove 20b. The upper shaft 9b of the movable member 9 has a handle 1
0 is attached by a screw, whereby the switching valve 4 rotates in conjunction with the rotation operation of the handle 10. Therefore, when the handle 10 is opened,
The flow path of the inlet-side joint 3 communicates with the flow path of the outlet-side joint 2 through the through hole 20a, and a predetermined flow rate of gas fluid flows in these flow paths in the direction of the arrow in FIG.
【００１２】次に、本ガスコック１内のガス流体の流れ
を説明する。出口側継手部２に流出管及び入口側継手部
３に流入管がそれぞれ接続されたガスコック１では、入
口側継手部３の流入管から流入したガス流体は、流路断
面８で流路が緩やかに狭められ、流路断面８に連なるボ
ール２０の貫通穴２０ａ、そしてボールパッキン止め７
の傾斜面を通って出口側継手部２の流出管に流出する。
しかるに、ガス流体の流れは、流路断面８で狭められる
が、ここでの縮流によるエネルギ損失が小さいために、
流入時の所定流量が流出時に維持され、よって、入口側
継手部３と出口側継手部２との圧力差１０ｍｍＡｑのと
きに６０００（リットル／ｈ）の流量が確保できる。Next, the flow of the gas fluid in the gas cock 1 will be described. In the gas cock 1 in which the outlet pipe is connected to the outlet-side joint 2 and the inlet pipe is connected to the inlet-side joint 3, the gas fluid flowing from the inlet pipe of the inlet-side joint 3 has a gentle flow path at the flow path cross section 8. The through hole 20a of the ball 20 connected to the flow path cross section 8 and the ball packing stopper 7
Flows out to the outflow pipe of the outlet side joint portion 2 through the inclined surface of.
However, the flow of the gas fluid is narrowed at the cross section 8 of the flow channel. However, since the energy loss due to the contraction is small here,
A predetermined flow rate at the time of inflow is maintained at the time of outflow, so that a flow rate of 6000 (liter / h) can be secured when the pressure difference between the inlet-side joint 3 and the outlet-side joint 2 is 10 mmAq.
【００１３】ところで、本発明の実施の形態として、従
来例との比較からストレート型１／２インチガスコック
を採り上げて説明したが、本発明の技術的な考え方は、
例えば、３／４インチや１インチなどのガスコックに適
用できることは言うまでもない。By the way, as an embodiment of the present invention, a straight type 1/2 inch gas cock has been described in comparison with a conventional example, but the technical idea of the present invention is as follows.
For example, it goes without saying that the present invention can be applied to a gas cock of 3/4 inch or 1 inch.
【００１４】[0014]
【発明の効果】本発明のガスコックによれば、従来のも
のより小型のボール型切換弁が配設されたガスコック本
体部に入口側及び出口側継手部を一体成形したものであ
っても、所定流量のガス流体の流れを確保できる。According to the gas cock of the present invention, even if the inlet and outlet joints are integrally formed with the gas cock main body in which the ball type switching valve smaller than the conventional one is disposed, A flow of gas fluid at a flow rate can be secured.
【図１】 本発明の実施の形態に係るガスコックの断面
構成図である。FIG. 1 is a cross-sectional configuration diagram of a gas cock according to an embodiment of the present invention.
【図２】 従来のガスコックの一部断面構成図である。FIG. 2 is a partial cross-sectional configuration diagram of a conventional gas cock.
１ ガスコック ２ 出口側継手部 ２ａ テーパ雌ねじ ３ 入口側継手部 ４ ボール型切換弁 ５ ガスコック本体部 ７ ボールパッキン止め ７ａ 雄ねじ ７ｂ 鍔（最大径部） ８ 流路断面（連接部） ２０ ボール ２１ 雌ねじ Ａ 雌ねじの内径 Ｂ 鍔の外径 Ｃ 鍔の厚み Ｄ テーパ雌ねじの最小内径部 DESCRIPTION OF SYMBOLS 1 Gas cock 2 Outlet side joint part 2a Taper female screw 3 Inlet side joint part 4 Ball type switching valve 5 Gas cock main part 7 Ball packing stop 7a Male screw 7b Flange (maximum diameter part) 8 Flow path cross section (connecting part) 20 Ball 21 Female screw A Inner diameter of female screw B Outer diameter of flange C Thickness of flange D Minimum inner diameter of tapered female screw
Claims (3)
手部と、前記ガス流体の流出管が接続される出口側継手
部と、前記ガス流体の流れを連通・不通にするためのボ
ール型切換弁が配設されるガスコック本体部とを一体成
形してなるガスコックであって、前記出口側継手部から
前記ガスコック本体部に至る断面の最狭部が、前記切換
弁のボール径より僅かに大きく、且つ、前記入口側継手
部と前記ガスコック本体部との連接部における断面が、
前記ガス流体の流れ方向に緩やかに縮小してなることを
特徴とするガスコック。An inlet joint to which a gas fluid inflow pipe is connected, an outlet joint to which said gas fluid outflow pipe is connected, and a ball for connecting and disconnecting the flow of the gas fluid. A gas cock obtained by integrally molding a gas cock main body portion provided with a mold switching valve, wherein a narrowest portion of a cross section from the outlet side joint portion to the gas cock main body portion is slightly smaller than a ball diameter of the switching valve. The cross section at the connecting portion between the inlet-side joint portion and the gas cock body portion is large,
A gas cock characterized by being gradually reduced in the flow direction of the gas fluid.
体部に至る断面の所定部位に配設されるボールパッキン
止めは、その最大径部が、前記出口側継手部のテーパ雌
ねじの最小内径部より僅かに大きく形成される一方、前
記最大径部の厚みが前記テーパ雌ねじのピッチ長さより
小さく形成されることを特徴とする請求項１に記載のガ
スコック。2. A ball packing stopper provided at a predetermined portion of a cross section from the outlet side joint portion to the gas cock main body portion has a maximum diameter portion smaller than a minimum inner diameter portion of a tapered female screw of the outlet side joint portion. The gas cock according to claim 1, wherein the gas cock is formed to be slightly larger, while the thickness of the maximum diameter portion is smaller than a pitch length of the tapered female screw.
は、テーパ角５０〜７０度のテーパで形成されているこ
とを特徴とする請求項１又は２に記載のガスコック。3. The gas cock according to claim 1, wherein a cross section of the gently reduced connecting portion is formed with a taper having a taper angle of 50 to 70 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000266391A JP3530812B2 (en) | 2000-09-04 | 2000-09-04 | Gas cock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000266391A JP3530812B2 (en) | 2000-09-04 | 2000-09-04 | Gas cock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002071032A true JP2002071032A (en) | 2002-03-08 |
| JP3530812B2 JP3530812B2 (en) | 2004-05-24 |
Family
ID=18753481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000266391A Expired - Fee Related JP3530812B2 (en) | 2000-09-04 | 2000-09-04 | Gas cock |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3530812B2 (en) |
-
2000
- 2000-09-04 JP JP2000266391A patent/JP3530812B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3530812B2 (en) | 2004-05-24 |
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