JPH0530653U - Safety structure of piston type pressure reducing device with V-packing - Google Patents
Safety structure of piston type pressure reducing device with V-packingInfo
- Publication number
- JPH0530653U JPH0530653U JP3820091U JP3820091U JPH0530653U JP H0530653 U JPH0530653 U JP H0530653U JP 3820091 U JP3820091 U JP 3820091U JP 3820091 U JP3820091 U JP 3820091U JP H0530653 U JPH0530653 U JP H0530653U
- Authority
- JP
- Japan
- Prior art keywords
- packing
- cylinder
- opening
- safety structure
- vertical groove
- 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
- Safety Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
(57)【要約】 （修正有）
【目的】 Ｖパッキン付きピストン型減圧弁の安全構造
において、小口径のシリンダーで放出路の内端開口の面
取り加工が困難な場合に、これを省いても確実に作動す
る安全構造を提供することを目的とする。
【構成】 シリンダー１内壁面３に一条の縦溝４を設け
る。そして、このシリンダー１の周壁２に、この縦溝４
内の開口６とシリンダー１外面の開口７を導結する、放
出路５を設ける。
(57) [Summary] (Modified) [Purpose] Even if it is difficult to chamfer the inner end opening of the discharge passage with a small diameter cylinder in the safety structure of the piston type pressure reducing valve with V packing, even if this is omitted The purpose is to provide a safety structure that operates reliably. [Structure] A single vertical groove 4 is provided on the inner wall surface 3 of the cylinder 1. The vertical groove 4 is formed on the peripheral wall 2 of the cylinder 1.
A discharge passage 5 is provided which connects the inner opening 6 and the opening 7 on the outer surface of the cylinder 1.
Description
【０００１】[0001]
本考案はＶパッキン付きピストン型減圧装置の安全構造にかかる。 The present invention relates to a safety structure of a piston type pressure reducing device with a V packing.
【０００２】[0002]
図３に示したように、シリンダー２１に横穴２２を開け、過剰（高）圧が発生 した場合、ピストン２３のＶパッキン２４がこの横穴２２の開口２５を通過した 時点で、ガス放出を行なうものがある。 また、図４のように、シリンダー２１に内径の拡大部２６を設け、横穴２２を この拡大部２６に開口させたものもある。 更に、図５のように、シリンダー２１の内壁面に一条の縦溝２７を設けたもの もある。 As shown in FIG. 3, when a lateral hole 22 is opened in the cylinder 21 and excessive (high) pressure is generated, gas is released when the V packing 24 of the piston 23 passes through the opening 25 of the lateral hole 22. There is. Further, as shown in FIG. 4, there is also one in which an enlarged portion 26 having an inner diameter is provided in the cylinder 21 and a lateral hole 22 is opened in this enlarged portion 26. Further, as shown in FIG. 5, there is also one in which a single vertical groove 27 is provided on the inner wall surface of the cylinder 21.
【０００３】[0003]
図３及び図４の場合、二次側の圧力Ｐ2 が高くなってピストン２３が上昇する と、Ｖパッキン２４はこの二次側の圧力を受けて一時的に横穴２２の開口周縁部 に張り付く。この状態でピストン２３が更に上昇すると、Ｖパッキン２４が開口 ２５のエッジで損傷を受けてしまい、復帰したときにガス洩れの原因となる。こ れは、特にシリンダー２１の材質が金属の場合に発生し易い。そのため、シリン ダー２１の横穴２２の開口２５の面取りを行なう必要があるが、小口径のシリン ダーではその加工も大変厄介である。In the case of FIG. 3 and FIG. 4, when the secondary side pressure P 2 rises and the piston 23 rises, the V packing 24 receives this secondary side pressure and temporarily sticks to the peripheral edge of the lateral hole 22. . When the piston 23 further rises in this state, the V packing 24 is damaged at the edge of the opening 25, which causes gas leakage when returning. This tends to occur particularly when the material of the cylinder 21 is metal. Therefore, it is necessary to chamfer the opening 25 of the lateral hole 22 of the cylinder 21, but the machining is very troublesome with a small-diameter cylinder.
【０００４】 また、図５の場合、Ｖパッキン２４が圧力で縦溝２７に入り込んでこれを遮断 してしまい、ガス放出機能を果たせなくしてしまう。Further, in the case of FIG. 5, the V packing 24 enters the vertical groove 27 by pressure and blocks it, so that the gas releasing function cannot be fulfilled.
【０００５】 本考案は、殊に、小口径のシリンダーのため、横穴の内端開口の面取り加工が 困難な場合に、これを省いても確実に作動する安全構造を提供することを意図す る。The present invention intends to provide a safety structure that operates reliably even if it is difficult to chamfer the inner end opening of the lateral hole due to the small diameter cylinder, especially. .
【０００６】[0006]
本考案にかかるＶパッキン付きピストン型減圧装置の安全構造は、シリンダー 内壁面に一条の縦溝を設けると共にこのシリンダーの周壁に、この縦溝内の開口 とシリンダー外面の開口を導結する、放出路を設けたことを特徴とする。 The safety structure of the piston type decompression device with V-packing according to the present invention has a structure in which a vertical groove is provided on the inner wall surface of the cylinder, and an opening in the vertical groove and an opening on the outer surface of the cylinder are connected to the peripheral wall of the cylinder. It is characterized by the provision of a road.
【０００７】[0007]
二次側の圧力が一次圧力バルブの洩れ等の原因で異常に高くなると、ピストン はスプリングを弾発して退散する。この際、Ｖパッキンの外周部の一部は縦溝に 入り込むので、この縦溝とこれに開口する放出路が遮断される。この状態では、 二次側圧力は外部へ放出されないので、ピストンは更に退散し、Ｖパッキンは放 出路の内端開口を通過する。この時点でガス圧は放出路を通って外部へ放出され る。Ｖパッキンは縦溝の形状により変形規制されているので、放出路の開口縁に 強く圧接することがなく、従ってその口縁で損傷させられることはない。 When the pressure on the secondary side becomes abnormally high due to leakage of the primary pressure valve, etc., the piston springs the spring and disperses. At this time, a part of the outer periphery of the V packing enters the vertical groove, so that the vertical groove and the discharge path opening to the vertical groove are blocked. In this state, the secondary side pressure is not released to the outside, so the piston further disperses and the V packing passes through the inner end opening of the discharge passage. At this point, the gas pressure is released to the outside through the release passage. Since the V-packing is restrained from being deformed by the shape of the vertical groove, it is not strongly pressed against the opening edge of the discharge passage, and is therefore not damaged at its rim.
【０００８】[0008]
図１は本案の安全構造を適用したガス供給器３１を示してある。 １はシリンダー、２はその周壁、３はその内壁面、４はこの内壁面３に設けた 一条の縦溝である。この周壁２に放出路５を設ける。この放出路５は縦溝４内の 開口６と、シリンダー１の外面の開口７を導結している。この開口６を縦溝４の 下端部に位置させることもできる。 ８はピストン、９はこのピストンの外周に嵌装したＶパッキン、１０はこのピ ストン８に背圧をかけるためのスプリングである。 FIG. 1 shows a gas supplier 31 to which the safety structure of the present invention is applied. Reference numeral 1 is a cylinder, 2 is a peripheral wall thereof, 3 is an inner wall surface thereof, and 4 is a single longitudinal groove provided on the inner wall surface 3. A discharge path 5 is provided on the peripheral wall 2. The discharge path 5 connects an opening 6 in the vertical groove 4 and an opening 7 on the outer surface of the cylinder 1. The opening 6 may be located at the lower end of the vertical groove 4. Reference numeral 8 is a piston, 9 is a V packing fitted around the outer circumference of the piston, and 10 is a spring for applying a back pressure to the piston 8.
【０００９】 このガス供給器３１は、圧力ガス容器を下端部の取り付け口３２に取り付ける と、穿針３３により封板が開封され、一次側の圧力Ｐ1 の高圧ガスを減圧装置３ ４により減圧して、二次側の圧力Ｐ2 のガスを供給口３５から供給する型式とな っている。When the pressure gas container is attached to the attachment port 32 at the lower end of the gas supply device 31, the sealing plate is opened by the puncture needle 33, and the high pressure gas having the primary pressure P 1 is decompressed by the decompression device 34. Then, the gas having the pressure P 2 on the secondary side is supplied from the supply port 35.
【００１０】 一次側の圧力Ｐ1 のガス洩れ等により二次側の圧力Ｐ2 が上昇すると、ピスト ン８はスプリング１０を撓ませて上方へ移動する。Ｖパッキン９は縦溝４に入り 込んで、この縦溝４を遮断すると共に開口６も塞ぐが、ピストン８が更に上昇す るとこの開口６から退散するので、高圧ガスは放出路５を通って外部へ放出され る。Ｖパッキン９は縦溝４の形状により変形が規制されるので、開口６の口縁部 に強く圧接することがなく、開口６上を通過してもその口縁で損傷したりしない 。When the pressure P 2 on the secondary side rises due to gas leakage of the pressure P 1 on the primary side, the piston 8 bends the spring 10 and moves upward. The V-packing 9 enters the vertical groove 4 to block the vertical groove 4 and close the opening 6 as well, but when the piston 8 further rises, the V-packing 9 escapes from the opening 6 so that the high pressure gas passes through the discharge passage 5. Are released to the outside. Since the V packing 9 is prevented from being deformed by the shape of the vertical groove 4, the V packing 9 does not come into strong pressure contact with the rim of the opening 6 and is not damaged even when passing over the opening 6.
【００１１】[0011]
本考案によれば、Ｖパッキンを放出路の縦溝内の開口縁部に強く圧接すること がなく、従ってＶパッキンがこの開口通過に際しその口縁で損傷したりせず、Ｖ パッキンが縦溝及び放出路を一時的に遮断しても、二次側圧力が下がらない限り ピストンが退散して行くので、放出路は外部へ開放状態となって高圧ガスを放出 することができる。 According to the present invention, the V packing is not strongly pressed against the edge of the opening in the vertical groove of the discharge passage, and therefore, the V packing is not damaged at the edge of the opening when passing through the opening. Also, even if the discharge passage is temporarily shut off, the piston will retreat unless the secondary side pressure falls, so the discharge passage is open to the outside and high-pressure gas can be discharged.
【図１】本考案にかかるＶパッキン付きピストン型減圧
装置の安全構造の具体例をガス供給器に適用した状態の
切断側面図である。FIG. 1 is a cut-away side view of a specific example of a safety structure of a piston type pressure reducing device with a V packing according to the present invention when applied to a gas feeder.
【図２】同図１の２−２線断面図である。FIG. 2 is a sectional view taken along line 2-2 of FIG.
【図３】従来のＶパッキン付きピストン型減圧装置の安
全構造の一例を、シリンダー及びピストンを切断して、
示す側面図である。FIG. 3 shows an example of a safety structure of a conventional piston type decompression device with a V packing by cutting a cylinder and a piston,
It is a side view shown.
【図４】従来のＶパッキン付きピストン型減圧装置の安
全構造の別の例を、シリンダー及びピストンを切断し
て、示す側面図である。FIG. 4 is a side view showing another example of a safety structure of a conventional piston type pressure reducing device with a V packing by cutting a cylinder and a piston.
【図５】従来のＶパッキン付きピストン型減圧装置の安
全構造の更に別の例を、シリンダー及びピストンを切断
して、示す側面図である。FIG. 5 is a side view showing still another example of the safety structure of the conventional piston type pressure reducing device with V-packing by cutting the cylinder and the piston.
１ シリンダー ２ 周壁 ３ 内壁面 ４ 縦溝 ５ 放出路 ６ 開口 ７ 開口 ８ ピストン ９ Ｖパッキン １０ スプリング 1 Cylinder 2 Peripheral wall 3 Inner wall surface 4 Vertical groove 5 Discharge path 6 Opening 7 Opening 8 Piston 9 V packing 10 Spring
Claims (1)
と共にこのシリンダーの周壁に、この縦溝内の開口とシ
リンダー外面の開口を導結する、放出路を設けたことを
特徴とするＶパッキン付きピストン型減圧装置の安全構
造。1. A V-packing characterized in that a single longitudinal groove is provided on the inner wall surface of the cylinder, and a discharge passage is provided on the peripheral wall of the cylinder to connect the opening in the vertical groove and the opening on the outer surface of the cylinder. Piston type pressure reducer safety structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3820091U JP2548743Y2 (en) | 1991-04-26 | 1991-04-26 | Safety structure of piston type pressure reducing device with V packing |
| US07/871,649 US5234015A (en) | 1991-04-26 | 1992-04-21 | Gas supply mechanism with safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3820091U JP2548743Y2 (en) | 1991-04-26 | 1991-04-26 | Safety structure of piston type pressure reducing device with V packing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0530653U true JPH0530653U (en) | 1993-04-23 |
| JP2548743Y2 JP2548743Y2 (en) | 1997-09-24 |
Family
ID=12518709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3820091U Expired - Lifetime JP2548743Y2 (en) | 1991-04-26 | 1991-04-26 | Safety structure of piston type pressure reducing device with V packing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2548743Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013161436A (en) * | 2012-02-08 | 2013-08-19 | Jtekt Corp | Pressure reduction valve |
| JP2015135154A (en) * | 2014-01-17 | 2015-07-27 | イーグル工業株式会社 | relief valve |
-
1991
- 1991-04-26 JP JP3820091U patent/JP2548743Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013161436A (en) * | 2012-02-08 | 2013-08-19 | Jtekt Corp | Pressure reduction valve |
| JP2015135154A (en) * | 2014-01-17 | 2015-07-27 | イーグル工業株式会社 | relief valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2548743Y2 (en) | 1997-09-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |