JP2014001765A5 - - Google Patents
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- JP2014001765A5 JP2014001765A5 JP2012136204A JP2012136204A JP2014001765A5 JP 2014001765 A5 JP2014001765 A5 JP 2014001765A5 JP 2012136204 A JP2012136204 A JP 2012136204A JP 2012136204 A JP2012136204 A JP 2012136204A JP 2014001765 A5 JP2014001765 A5 JP 2014001765A5
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- angle
- edge portion
- obtuse
- taper angle
- diameter side
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Description
鈍角エッジ部２２は断面が山状であり、この山の角度θは、１６０〜１７８度程度に設けられ、本実施形態ではこの鈍角エッジ部２２の内径側と外径側とのテーパ角が異なっている。図３において、内径側テーパ角θ１は５°、外径側テーパ角θ２は２°に形成されており、これらのテーパ角θ１、θ２により鈍角エッジ部２２の角度θは１７３°の鈍角に設けられている。外径側テーパ角θ２を内径側テーパ角θ１よりも小さく形成しているのは、低圧時のときには、後述するシール径（シールエッジ径Ｄｓ）を小さくし、高圧時のときには、ポペット弁体３の後述する平面部３５とのシール幅を外径方向に広くするためである。これにより、低圧時から高圧時まで、確実にシールすることが可能になる。鈍角エッジ部２２の頂点付近２２ａは、鋭くする必要はなく、半径の小さい断面Ｒ形状としてもよい。なお、外径側テーパ角θ２を０°より大きく設定し、例えば、１°であってもよく、本実施形態においては、０°＜θ２＜５°、より好ましくは、１°＜θ２＜３°の範囲に設定するのがよい。また、前述のように、内径側テーパ角θ１を外径側テーパ角θ２よりも大きく形成しているので、高圧時のときに、弁座シール面２１の内周縁部（流路２０との交点）がポペット弁体３の平面部３５を押圧するのを防ぎ、平面部３５の損傷なく、確実な面シールを行うことができる。
The obtuse angle edge portion 22 has a mountain-shaped cross section, and the angle θ of the mountain is provided at about 160 to 178 degrees. In this embodiment, the taper angle between the inner diameter side and the outer diameter side of the obtuse angle edge portion 22 is different. ing. In FIG. 3, the inner diameter side taper angle θ1 is 5 ° and the outer diameter side taper angle θ2 is 2 °. By these taper angles θ1 and θ2, the angle θ of the obtuse edge portion 22 is provided at an obtuse angle of 173 °. It has been. The reason why the outer diameter taper angle θ2 is smaller than the inner diameter taper angle θ1 is that a seal diameter (seal edge diameter Ds), which will be described later, is reduced when the pressure is low, and the poppet valve body 3 is set when the pressure is high. This is because the seal width with the flat portion 35 described later is increased in the outer diameter direction. As a result, it is possible to reliably seal from a low pressure to a high pressure. The apex vicinity 22a of the obtuse edge portion 22 does not need to be sharp and may have a cross-sectional R shape with a small radius. The outer diameter side taper angle θ2 is set larger than 0 °, and may be, for example, 1 °. In the present embodiment, 0 ° <θ2 <5 °, more preferably 1 ° <θ2 <3. It should be set in the range of °. Further, as described above, since the inner diameter side taper angle θ1 is formed larger than the outer diameter side taper angle θ2, the inner periphery of the valve seat seal surface 21 (intersection with the flow path 20) at high pressure. ) Can be prevented from pressing the flat surface portion 35 of the poppet valve body 3, and the flat surface portion 35 can be reliably sealed without being damaged.
ポペット弁体３は、平面部３５が鈍角エッジ部２２の硬度よりも低くなるように、比較的硬度の低い材料で形成されている。本実施形態では、ポペット弁体３の材質は樹脂であり、この樹脂は、鈍角エッジ部２２を有するスリーブ１６の硬度よりも低い材質で且つ、高圧流体の封止に必要な高強度を有する材質になっている。この樹脂としては、例えば、スーパーエンジニアリングプラスチックに属するポリエーテルエーテルケトン（ＰＥＥＫ）又はポリイミド（ＰＩ）であり、本実施形態では、ＰＥＥＫに３０％のグラファイトを混合したものを用いてポペット弁体を形成した。なお、本実施形態において、「平面部３５が鈍角エッジ部２２の硬度より低い」とは、流体圧の上昇に伴って、平面部３５と鈍角エッジ部２２の弁座シール面２１とのシール幅が広がる一方、流体圧の下降に伴って、シール幅が狭くなるよう、平面部３５側が弾性変形する程度の硬度の低さをいう。
The poppet valve body 3 is formed of a material having a relatively low hardness so that the flat surface portion 35 is lower than the hardness of the obtuse angle edge portion 22. In the present embodiment, the material of the poppet valve body 3 is a resin, and this resin is a material having a strength lower than the hardness of the sleeve 16 having the obtuse edge portion 22 and a high strength necessary for sealing a high-pressure fluid. It has become. As this resin, for example, polyether ether ketone (PEEK) or polyimide (PI) belonging to super engineering plastics, and in this embodiment, a poppet valve body is formed using a mixture of PEEK and 30% graphite. did. In this embodiment, “the flat surface portion 35 is lower than the hardness of the obtuse angle edge portion 22” means that the seal width between the flat surface portion 35 and the valve seat seal surface 21 of the obtuse angle edge portion 22 increases with increasing fluid pressure. while spreads, with the lowering of the fluid pressure, so that the seal width becomes narrow, flat portion 35 side refers to the low hardness of the degree of elastic deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012136204A JP5973247B2 (en) | 2012-06-15 | 2012-06-15 | High pressure check valve and hydrogen station using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012136204A JP5973247B2 (en) | 2012-06-15 | 2012-06-15 | High pressure check valve and hydrogen station using the same |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014143805A Division JP5973504B2 (en) | 2014-07-14 | 2014-07-14 | External seal structure of high-pressure piping flow path and hydrogen station |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2014001765A JP2014001765A (en) | 2014-01-09 |
| JP2014001765A5 true JP2014001765A5 (en) | 2015-01-29 |
| JP5973247B2 JP5973247B2 (en) | 2016-08-23 |
Family
ID=50035137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012136204A Active JP5973247B2 (en) | 2012-06-15 | 2012-06-15 | High pressure check valve and hydrogen station using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5973247B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6379959B2 (en) * | 2014-10-07 | 2018-08-29 | 株式会社デンソー | Refrigeration cycle compressor |
| JP6613035B2 (en) * | 2015-02-24 | 2019-11-27 | 株式会社キッツエスシーティー | High pressure needle valve and hydrogen station using the same |
| JP6517040B2 (en) * | 2015-02-24 | 2019-05-22 | 株式会社キッツエスシーティー | High pressure filter device and hydrogen station using the same |
| JP6654420B2 (en) * | 2015-12-14 | 2020-02-26 | 株式会社キッツ | High pressure check valve and hydrogen station using it |
| WO2018003982A1 (en) * | 2016-06-30 | 2018-01-04 | 株式会社キッツ | Check valve |
| CN113405016B (en) * | 2021-06-30 | 2022-10-14 | 中材科技(成都)有限公司 | High-pressure composite gas cylinder with internal sealing structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59110474U (en) * | 1983-01-18 | 1984-07-25 | 株式会社山武 | valve seat |
| DE3885797D1 (en) * | 1987-06-16 | 1994-01-05 | Gerd Hoermansdoerfer | Sealing connection. |
| US5433710A (en) * | 1993-03-16 | 1995-07-18 | Minimed, Inc. | Medication infusion pump with fluoropolymer valve seat |
| JP4330943B2 (en) * | 2003-06-30 | 2009-09-16 | 株式会社ジェイテクト | High pressure valve for hydrogen gas and decompression device for hydrogen gas |
| WO2005028931A1 (en) * | 2003-09-15 | 2005-03-31 | Exxonmobil Upstream Research Company | Improved fluid control devices |
| JP4976436B2 (en) * | 2009-03-09 | 2012-07-18 | 日立機材株式会社 | Hydraulic damper |
| JP5048814B2 (en) * | 2010-07-20 | 2012-10-17 | 本田技研工業株式会社 | Operation method of hydrogen filling system |
-
2012
- 2012-06-15 JP JP2012136204A patent/JP5973247B2/en active Active
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