JPS63308290A - Union joint - Google Patents
Union jointInfo
- Publication number
- JPS63308290A JPS63308290A JP14582487A JP14582487A JPS63308290A JP S63308290 A JPS63308290 A JP S63308290A JP 14582487 A JP14582487 A JP 14582487A JP 14582487 A JP14582487 A JP 14582487A JP S63308290 A JPS63308290 A JP S63308290A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- cylinder
- cap nut
- union joint
- fitting
- 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.)
- Pending
Links
- 239000003566 sealing material Substances 0.000 claims description 14
- 239000007789 gas Substances 0.000 description 40
- 239000001307 helium Substances 0.000 description 6
- 229910052734 helium Inorganic materials 0.000 description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 229910000077 silane Inorganic materials 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000008149 soap solution Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Joints With Pressure Members (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はガス配管に接続されるユニオン継手に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a union joint connected to a gas pipe.
従来、この種ユニオン継手は第２図に示すように構成さ
れている。第２図はガス配管に接続されたボンベシリン
ダー取付は用口金金具とガスボンベのボンベシリンダー
バルブとが接続された状態を示す側断面図である。同図
において、符号１はガ、ｔボンベ（図示せず）における
ボンベシリンダーバルブのガス出口側に突出するごとく
設けられた筒状の口金金具取付は部（以下取付は部とい
う）で、この取付は部１の外周面には後述する袋ナツト
が螺合するねじ１ａが形成されている。２はガス配管（
図示せず）と接続されたボンベシリンダー取付は用口金
金具本体（以下口金金具という）で、その先端部にはつ
ば２ａが形成されている。３はシール材、４は袋ナツト
で、この袋ナツト４の一端部には、軸心部に前記口金金
具２が貫通する透孔を有し、前記りば２ａに当接する押
え片４ａが一本に形成され、かつ内周部には前記取付は
部１のねじ１８に螺合するねじ４ｂが形成されている。Conventionally, this type of union joint has been constructed as shown in FIG. FIG. 2 is a side cross-sectional view showing a state in which a cylinder cylinder valve connected to a gas pipe is connected to a mouth fitting and a cylinder cylinder valve of a gas cylinder. In the same figure, reference numeral 1 denotes a part (hereinafter referred to as part) for attaching a cylindrical mouth fitting protruding from the gas outlet side of the cylinder cylinder valve of a T cylinder (not shown). A screw 1a is formed on the outer peripheral surface of the portion 1, into which a cap nut, which will be described later, is screwed. 2 is gas piping (
The cylinder cylinder mounting body (not shown) is connected to the mouthpiece body (hereinafter referred to as the mouthpiece), and a flange 2a is formed at the tip thereof. 3 is a sealing material, 4 is a cap nut, and one end of the cap nut 4 has a through hole in the axial center through which the cap fitting 2 passes, and a presser piece 4a that comes into contact with the rib 2a is attached. A screw 4b which is screwed into the screw 18 of the mounting section 1 is formed on the inner peripheral portion.
すなわち、取付は部１、口金金具２および袋ナツト４に
よりユニオン継手が１ｇ底されている。That is, when installing the union joint, the portion 1, the cap fitting 2, and the cap nut 4 have a bottom of 1 g.
したがって、取付は部１の先端部にシール材３を介して
口金金具２のりば２ａを当接させ、袋ナツト４を口金金
具２側から取付は部１のねじ１．に螺着させることによ
シ、取付は部１と口金金具２が撃続されることになる。Therefore, for installation, the fitting 2 abuts against the tip of the part 1 via the sealing material 3, and the cap nut 4 is installed from the side of the fitting 2 using the screw 1 of the part 1. By screwing it on, the part 1 and the cap fitting 2 will be connected in succession.
このように構成されたユニオン継手は袋ナツト４の締付
けが不充分でおると、取付は部１と口金金具２とがシー
ル材３に完全に密着することができず、ガスが外部に漏
れるという不具合が生じる。In a union joint constructed in this way, if the cap nut 4 is insufficiently tightened, the fitting part 1 and the fitting 2 will not be able to come into complete contact with the sealing material 3, causing gas to leak to the outside. A problem occurs.
このため、袋ナツト４の締付けが完了した時点で、ボン
ベ内におけるガスの圧力あるいはガス配管側に設けられ
た池のガス供給源から供給されるガスの圧力によりこの
ユニオン継手部分を含む配管内の内部圧力を上昇させ、
袋ナツト４のボンベ側側端部および口金金具２のつは２
ａと袋ナツト４の押え片４ａとの尚接部分に石鹸液をか
け、泡の発生を調べることによってガスの漏れを検出し
ていた。Therefore, when the tightening of the cap nut 4 is completed, the gas pressure inside the cylinder or the gas pressure supplied from the gas supply source in the pond provided on the gas piping side causes the inside of the piping, including this union joint part, to tighten. increase internal pressure,
The cylinder side end of the cap nut 4 and the cap fitting 2 are 2.
Gas leakage was detected by applying soap solution to the area where the cap nut 4 was still in contact with the holding piece 4a of the cap nut 4, and examining the generation of bubbles.
しかるに、このように構成されたユニオン継手のガス漏
れを検出するにあたり、石鹸液の濃度、検査時間等によ
って泡の発生状態が異なり、かつ微小な泡は発見されに
くく見落とされやすいため、ガス漏れｔ確実に検出する
ことができなかった。However, when detecting gas leaks from union joints configured in this way, the state of bubble generation varies depending on the concentration of soap solution, inspection time, etc., and minute bubbles are difficult to detect and are easily overlooked. could not be detected reliably.
このため、人体に対して有害なガスを使用する場合には
不安全であるとｉう問題がめった。For this reason, when using gases that are harmful to the human body, there has often been the problem that they are unsafe.
本発明に係るユニオン継手は、袋ナツトの側部であって
シール材と対向する部位に袋ナツトの内側と外側とを連
通ずるガス漏れ検出用透孔を設けたものである。The union joint according to the present invention is provided with a through hole for detecting gas leakage, which communicates the inside and outside of the cap nut, in a side portion of the cap nut that faces the sealing material.
袋ナツトを締付けることによってガス配管どうしが接続
されると共に、透孔がシール材と対向する。この透孔に
ガス検出器を接続することによりシール材部分から漏れ
たガスが検出される。By tightening the cap nut, the gas pipes are connected to each other, and the through hole faces the sealing material. By connecting a gas detector to this through hole, gas leaking from the sealing material portion can be detected.
以下、その構成等を図に示す実施例により詳細に説明す
る。Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings.
第１■は本発明に係るユニオン継手を示す側断面図で、
同図において前記従来例と同一もしくは同等部材につい
ては同一符号を付し、ここにおいて詳細な説明は省略す
る。同図において、符号１１はガスの漏れを検出するた
めＯ透孔で、袋ナツト４の側部に袋ナツト４０内側と外
側とを連通するよう穿設されている。また、との透孔１
１の位置は、取付は部１の先端部にシール材３を介して
口金金具２のつば２ａを当接させ、袋ナツト４を取付は
部１に螺着させた時点で、シール材３と対向するように
設けられている。なお、との透孔１１の直径は吸引式ガ
ス検出器（図示せず）の検出部分が嵌着可能な寸法に形
成されている。Part 1 is a side sectional view showing a union joint according to the present invention.
In the figure, the same or equivalent members as those in the conventional example are given the same reference numerals, and detailed explanations will be omitted here. In the figure, reference numeral 11 denotes an O-through hole for detecting gas leakage, which is bored in the side of the cap nut 4 so as to communicate between the inside and the outside of the cap nut 40. Also, through hole 1 with
In position 1, when installing, the flange 2a of the cap fitting 2 is brought into contact with the tip of the part 1 through the sealing material 3, and when the cap nut 4 is screwed onto the installing part 1, the sealing material 3 and They are arranged to face each other. The diameter of the through hole 11 is set to a size that allows a detection portion of a suction type gas detector (not shown) to fit therein.
このように構成されたユニオン継手を使用して、例えば
、シランガスボンベとガス配管とを接続し、その漏れ検
査を行なうには、先ず袋ナツト４を取付は部１に確実に
締付けることによってシール材３とつば２ａおよび取付
は部１の先端部とを確実に密着させ、取付は部１に口金
金具２を取付ける。For example, in order to connect a silane gas cylinder and a gas pipe and perform a leakage test using the union joint configured in this way, first securely tighten the cap nut 4 to the part 1 to remove the sealing material. 3 and the collar 2a and the distal end of the part 1 are brought into close contact with each other, and the cap fitting 2 is attached to the part 1.
この際、シランガスボンベのボンベシリンダーパルプは
閉じておく。次で、ガス配管側に接続されたヘリウムガ
スボンベ（図示せず）から供給されるヘリウムガスの圧
力によって口金金具２と取付は部１とを含む配管内を加
圧する。そして、袋ナツト４の透孔１１に吸引式ヘリク
ム検出器（図示せず）の検出部分を接続する。この際、
シール材３部分からヘリ９ムガスが漏れると、ヘリウム
ガスは袋ナツト４の内周面に沿って透孔１，１側に導か
れ、吸引式ヘリウム検出器内に吸込まれるので＼その漏
れが検出されることになる。しかる後、ヘリウムガスの
漏れがないと判定された時点でシランガスボンベシリン
ダーパルプを開き、配管内のガスをヘリウムからシラン
ガスへ切＃）換える。At this time, keep the cylinder pulp of the silane gas cylinder closed. Next, the inside of the piping including the cap 2 and the attachment part 1 is pressurized by the pressure of helium gas supplied from a helium gas cylinder (not shown) connected to the gas piping side. Then, a detection portion of a suction type helicum detector (not shown) is connected to the through hole 11 of the cap nut 4. On this occasion,
When helium gas leaks from the sealing material 3, it is guided along the inner peripheral surface of the cap nut 4 toward the through holes 1 and 1, and is sucked into the suction type helium detector, preventing the leakage. It will be detected. After that, when it is determined that there is no leakage of helium gas, open the silane gas cylinder cylinder pulp and change the gas in the pipe from helium to silane gas.
なお、本発明に係るユニオン継手は、ガスボンベとガス
配管とを接続するものに限らず、ガスライン中において
配管と分離、接続を要する部分であればいかなる部分に
も使用することができる。The union joint according to the present invention is not limited to connecting a gas cylinder and gas piping, but can be used for any part of a gas line that requires separation and connection with piping.
〔発明の効果〕
以上説明したように本発明によれば、ユニオン継手にお
ける袋ナツトの側部であってシール材と対向する部位に
袋ナツトの内側と外側とを連通するガス漏れ検出用透孔
を設けたため、この透孔に吸引式ガス検出器を接続する
ことによって、シール材部分から漏れたガスは袋ナツト
の内周面に沿って透孔側に導かれ検出される。したがっ
て、ガス漏れを作業者の判断によることなく確実に検出
できるため、ガス漏れによる災害を防止できる安全なユ
ニオン継手が得られる。[Effects of the Invention] As explained above, according to the present invention, a through hole for gas leakage detection that communicates between the inside and outside of the cap nut is provided in the side portion of the cap nut in the union joint at the portion facing the sealing material. By connecting a suction type gas detector to this through hole, gas leaking from the sealing material portion is guided to the through hole side along the inner peripheral surface of the cap nut and detected. Therefore, gas leaks can be reliably detected without relying on the operator's judgment, resulting in a safe union joint that can prevent disasters caused by gas leaks.
第１図は本発明に係るユニオン継手を示す側断面図、第
２図はガス配管に接続されたボンベシリンダー取［用口
金金具とガスボンベのボンベシリンダーパルプとが接続
された状態を示す側断面図である。
１・・−・口金金具取付は部、２・・・φポンベシリン
ダー取付は用口金金具本体、３・・・・シール材、４・
・・―袋ナツト、１１・・・・透孔。
代 理 人 大 岩 増 雄第１図
第２輿Fig. 1 is a side sectional view showing a union joint according to the present invention, and Fig. 2 is a side sectional view showing a state in which the cylinder cylinder pulp [fitting for the cylinder cylinder connected to the gas pipe] and the cylinder cylinder pulp of the gas cylinder are connected. It is. 1...The fitting is attached to the part, 2...The φ pump cylinder is attached to the fitting itself, 3...Sealing material, 4...
...Fukuronatsu, 11...Through hole. Agent Masuo Oiwa 1st figure 2nd palanquin
Claims (1)
の側部であつてシール材と対向する部位に袋ナットの内
側と外側とを連通するガス漏れ検出用透孔を設けたこと
を特徴とするユニオン継手。A union joint connected to a gas pipe, characterized in that a through hole for detecting gas leakage communicating between the inside and outside of the cap nut is provided on the side of the cap nut in a portion facing the sealing material. Fittings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14582487A JPS63308290A (en) | 1987-06-10 | 1987-06-10 | Union joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14582487A JPS63308290A (en) | 1987-06-10 | 1987-06-10 | Union joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63308290A true JPS63308290A (en) | 1988-12-15 |
Family
ID=15393974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14582487A Pending JPS63308290A (en) | 1987-06-10 | 1987-06-10 | Union joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63308290A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015064109A (en) * | 2007-06-26 | 2015-04-09 | スウエイジロク・カンパニー | Conduit connection with sensing function |
| US10295093B2 (en) | 2007-06-26 | 2019-05-21 | Swagelok Company | Conduit connection with sensor on a threaded body |
| US10578503B2 (en) | 2015-03-06 | 2020-03-03 | Swagelok Company | System and methods for strain detection in a coupling |
-
1987
- 1987-06-10 JP JP14582487A patent/JPS63308290A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015064109A (en) * | 2007-06-26 | 2015-04-09 | スウエイジロク・カンパニー | Conduit connection with sensing function |
| JP2016128721A (en) * | 2007-06-26 | 2016-07-14 | スウエイジロク・カンパニー | Conduit connection having sensing function |
| US9400070B2 (en) | 2007-06-26 | 2016-07-26 | Swagelok Company | Conduit fitting with sensor on a threaded nut |
| US10295093B2 (en) | 2007-06-26 | 2019-05-21 | Swagelok Company | Conduit connection with sensor on a threaded body |
| US10578503B2 (en) | 2015-03-06 | 2020-03-03 | Swagelok Company | System and methods for strain detection in a coupling |
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