JP5062680B2 - Valve device - Google Patents
Valve device Download PDFInfo
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- JP5062680B2 JP5062680B2 JP2007320247A JP2007320247A JP5062680B2 JP 5062680 B2 JP5062680 B2 JP 5062680B2 JP 2007320247 A JP2007320247 A JP 2007320247A JP 2007320247 A JP2007320247 A JP 2007320247A JP 5062680 B2 JP5062680 B2 JP 5062680B2
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- valve
- seat
- valve body
- hole edge
- valve device
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- 239000002184 metal Substances 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 13
- 229910001369 Brass Inorganic materials 0.000 claims description 5
- 239000010951 brass Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 description 11
- 229920005989 resin Polymers 0.000 description 11
- 239000007789 gas Substances 0.000 description 7
- 150000002739 metals Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 208000003251 Pruritus Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007803 itching Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- Lift Valve (AREA)
Description
本発明は、極低温ポンプおよび各種圧縮機に用いられる高圧弁などのメタルタッチ型のシート部の改良に係り、シール性と耐久性に優れたバルブ装置に関する技術である。 The present invention relates to improvement of a metal touch type seat portion such as a high pressure valve used in a cryogenic pump and various compressors, and relates to a valve device having excellent sealing performance and durability.
従来、高圧ガス設備に用いられる高圧弁などのバルブ装置のシート部は、要求されるシール性と耐久性から、金属と樹脂の組合せにより構成されているのが殆どである。しかし、金属と樹脂の組合せに係るシート部は以下の問題がある。先ず、第１の問題は、可燃性の問題である。特に超高圧で用いられる場合、摩擦により高温となるため、可燃性の部材である樹脂の使用は避ける方が好ましい。次に、第２の問題は、ガスの置換性の問題である。金属と樹脂の組合せに係るシート部では、樹脂を金属に固定する必要があり、必然的に金属・樹脂間の組合せ隙間が生ずることになるが、この隙間へ侵入したガスの排除が困難となりガスの置換性が悪化することになる。そして、第３の問題は樹脂からのガス放出の問題である。樹脂内には各種のガス成分が吸着されており、これが真空度の上昇と共に順次放出されることになるが、特に真空設備においては、このガス放出によって真空度の低下や真空引き時間の長期化を招く要因となる。 Conventionally, a seat portion of a valve device such as a high-pressure valve used in a high-pressure gas facility is mostly composed of a combination of a metal and a resin because of required sealing properties and durability. However, the sheet portion related to the combination of metal and resin has the following problems. First, the first problem is a combustible problem. In particular, when used at an ultra-high pressure, it is preferable to avoid the use of a resin that is a combustible member because the temperature becomes high due to friction. Next, the second problem is a gas substituting problem. In the sheet portion related to the combination of metal and resin, it is necessary to fix the resin to the metal, and a combined gap between the metal and the resin is inevitably formed. The substituting property will deteriorate. The third problem is a problem of gas emission from the resin. Various gas components are adsorbed in the resin, and they are released sequentially as the degree of vacuum increases. Especially in vacuum equipment, this gas release lowers the degree of vacuum and prolongs the evacuation time. It becomes a factor inviting.
ここで、昨今重要な問題となっているのが、第１の問題である可燃性の問題である。この問題は、樹脂体積や樹脂の表面積を減少させる方法、および樹脂材料を改良してガスの放出を少なくする方法では解決が不可能である。
そのため、可燃性の問題を解決するため、金属同士の組合せによるシート部を有するバルブ装置、すなわち、メタルタッチ型のバルブ装置がある。
しかし、金属同士の組合せによるシート部は、以前から各種のシート部の構成が実用に供されているが以下の問題がある。先ず、円錐型のシート部（図８−１参照）では、弁体が弁座に対して摺動をするため摺動面に焼き付きを生じたり、或いは摺動によって微粒粉塵が発生するといった問題がある。また、平面型シート部（図８−２参照）では、弁体と弁座間のシール性が相対的に低いといった問題がある。また、突型シート部（図８−３参照）では、弁体と弁座との当接部に圧壊や打痕、剥離等が生じ易く、耐久性に劣るといった問題がある。
このような状況下、金属同士の組合せに係るシート部において、シール性と耐久性を高める構造が要望されている。
Here, what has become an important problem nowadays is the combustibility problem which is the first problem. This problem cannot be solved by a method of reducing the resin volume and the surface area of the resin and a method of reducing the gas emission by improving the resin material.
Therefore, in order to solve the flammability problem, there is a valve device having a seat portion formed by a combination of metals, that is, a metal touch type valve device.
However, the sheet portion made of a combination of metals has been practically used in various configurations, but has the following problems. First, in the conical seat portion (see FIG. 8A), there is a problem that the valve body slides with respect to the valve seat, so that the sliding surface is seized or fine dust is generated by sliding. is there. Moreover, in a planar seat part (refer FIG. 8-2), there exists a problem that the sealing performance between a valve body and a valve seat is relatively low. Further, in the protruding seat portion (see FIG. 8-3), there is a problem that the contact portion between the valve body and the valve seat is likely to be crushed, dented, peeled off, and the like, and the durability is poor.
Under such circumstances, there is a demand for a structure that enhances sealing performance and durability in the sheet portion related to the combination of metals.
本発明は、メタルタッチ型のシート部の改良を行い、シール性と耐久性に優れ、荷重がかかった場合でも軽い力でバルブ装置を動作できる締め付けトルクが小さなバルブ装置を提供することを目的とする。 An object of the present invention is to provide a valve device that improves a metal touch type seat portion, has excellent sealing performance and durability, and can operate the valve device with a light force even when a load is applied, and has a small tightening torque. To do.
上記目的を達成するため、本発明のバルブ装置は、弁体および弁座が互いに環状に圧接するシート部を備えたメタルタッチ型のバルブ装置において、弁体における円錐台形の弁頭の環状テーパー面裾部に、断面がアール状の丸型山の形状を成す小突起を突設し、かつ、弁座の孔縁部がアール加工され、弁体の弁頭の環状テーパー面裾部の該小突起と弁座の孔縁部が圧接する構成とされたことを特徴とする。 In order to achieve the above object, a valve device according to the present invention is a metal touch type valve device having a seat portion in which a valve body and a valve seat are in annular contact with each other. A small protrusion having a rounded mountain shape with a rounded cross section is provided at the hem, and the hole edge of the valve seat is rounded, and the small edge of the annular tapered surface hem of the valve head of the valve body The protrusion and the hole edge of the valve seat are configured to be in pressure contact with each other.
上記弁体における円錐台形の弁頭の環状テーパー面裾部に、断面がアール状の丸型山の形状を成す小突起を突設し、かつ、弁座の孔縁部がアール加工され、弁体の弁頭の環状テーパー面裾部の該小突起と弁座の孔縁部が圧接する構成によれば、圧接を繰り返すうちに小突起によって弁座の孔縁部に凹部が形成されるので、小突起と該凹部が接近することにより生じるラビリング効果によって、本メタルタッチ型のバルブ装置のシート部のシール性と耐久性を向上できる。また、本バルブ装置は、小突起と弁座の孔縁部が環状線で圧接するため、バルブの締め付けトルクを小さくでき、荷重がかかった場合でも軽い力で動作し得ることとなる。
また、弁頭の環状テーパー面裾部に、断面がアール状の丸型山の形状を成す小突起を突設することで、該小突起と弁座の孔縁部が圧接する際、微粒粉塵の発生、圧壊や変形の発生を回避することが可能となり、シール性と耐久性をより向上できる。
A small projection having a rounded mountain shape with a rounded cross-section is provided at the bottom of the annular tapered surface of the frustoconical valve head in the valve body, and the hole edge of the valve seat is rounded. According to the structure in which the small protrusion on the bottom of the annular tapered surface of the body valve head and the hole edge of the valve seat are in pressure contact, a recess is formed in the hole edge of the valve seat by the small protrusion while the pressure contact is repeated. The sealability and durability of the seat portion of the valve device of the metal touch type can be improved by the labyrinth effect generated when the small protrusion and the concave portion approach each other. In addition, since the small protrusion and the hole edge of the valve seat are pressed against each other by an annular line, the valve device can reduce the tightening torque of the valve and can operate with a light force even when a load is applied.
In addition, a small protrusion having a rounded mountain shape with a rounded cross section is provided at the bottom of the annular tapered surface of the valve head so that when the small protrusion and the hole edge of the valve seat are pressed against each other, fine dust Occurrence, crushing and deformation can be avoided, and the sealing performance and durability can be further improved.
ここで、上記構成のバルブ装置において、弁頭の環状テーパー面裾部に形成された丸型山の頂部の曲率半径Ｒ1 は ０．１〜１．０ｍｍとされ、かつ、丸型山の裾野の曲率半径Ｒ2 は ０．１〜１．０ｍｍに設定されることが好ましい。 Here, in the valve device configured as described above, the radius of curvature R 1 of the top of the circular crest formed at the bottom of the annular tapered surface of the valve head is 0.1 to 1.0 mm, and the base of the round crest is the radius of curvature R 2 of are preferably set to 0.1 to 1.0 mm.
また、上記構成のバルブ装置において、弁体および弁座が真鍮材料から成り、シート部の締め付けトルクが小さいように環状線で圧接するようにしたことを特徴とする。
弁体および弁座を真鍮材料で構成することにより、高圧酸素用として用いられる場合においても可燃性の問題が生じることがなく、耐久性を向上することが可能となる。また、シート部の締め付けトルクが小さいように環状線で圧接するようにすることで、荷重がかかった場合でも軽い力で動作可能となる。
In the valve device configured as described above, the valve body and the valve seat are made of a brass material, and are pressure-contacted with an annular line so that the tightening torque of the seat portion is small.
When the valve body and the valve seat are made of a brass material, there is no problem of flammability even when used for high-pressure oxygen, and durability can be improved. In addition, by pressing with an annular line so that the tightening torque of the seat portion is small, it is possible to operate with a light force even when a load is applied.
さらに、上記構成のバルブ装置において、弁体の弁頭の硬度を、弁座の孔縁部の硬度より高く設定することが好ましい。
弁体の弁頭の硬度を、弁座の孔縁部の硬度より高く設定することにより、シール性を更に高めることが可能となる。
Furthermore, in the valve device configured as described above, it is preferable that the hardness of the valve head of the valve body is set higher than the hardness of the hole edge portion of the valve seat.
By setting the hardness of the valve head of the valve body to be higher than the hardness of the hole edge of the valve seat, the sealing performance can be further improved.
本発明のバルブ装置は、メタルタッチ型のシート部の改良を行ったもので、シール性と耐久性に優れ、荷重がかかった場合でも軽い力でバルブ装置を動作できるといった効果がある。 The valve device according to the present invention is an improvement of the metal touch type seat portion, and is excellent in sealing performance and durability, and has an effect that the valve device can be operated with a light force even when a load is applied.
以下、本発明の実施形態について、図面を参照しながら詳細に説明していく。ただし、本発明の範囲は、図示例に限定されるものではない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the scope of the present invention is not limited to the illustrated examples.
図１は、実施例１のバルブ装置構造の縦断面図を示している。図１において、バルブ装置１は、上からハンドル部（１１ａ，１１ｂ）、弁棒６、弁体２、その周囲を取り囲むボンネット７、そして流入配管口５１と流出配管口５２を形成する弁本体５から構成されており、弁体２の弁頭２１が弁本体５の弁座３に離着座するシート部を形成する。
弁体２，弁本体５の材質は、真鍮（黄銅）である。
FIG. 1 shows a longitudinal sectional view of the valve device structure of the first embodiment. In FIG. 1, a valve device 1 includes a handle body (11 a, 11 b), a valve rod 6, a valve body 2, a bonnet 7 surrounding the periphery thereof, and a valve body 5 that forms an inflow piping port 51 and an outflow piping port 52. The valve head 21 of the valve body 2 forms a seat portion that is seated on and off the valve seat 3 of the valve body 5.
The material of the valve body 2 and the valve body 5 is brass (brass).
図２と図３は、それぞれ本発明のバルブ装置の弁本体の外観図と弁本体構造の縦断面図（図２のＡ−Ａ’断面）を示している。流体が流入配管口５１から弁室８を経由して流出配管口５２に移動する。弁体（図示せず）が図３の上方部から螺入し、弁頭（図示せず）の裾部が弁座３に着座することで、シール部４がシールされる。弁座３は環状リングとなっており、図３におけるＢの部分の拡大図を示した図４の如く、流入配管口５１と弁座３との孔縁部３１は、アール加工されている。ここでは０．５ｍｍのアール加工が施されている。 2 and 3 show an external view of the valve body of the valve device of the present invention and a longitudinal sectional view of the valve body structure (A-A 'section of FIG. 2), respectively. The fluid moves from the inflow piping port 51 to the outflow piping port 52 via the valve chamber 8. A valve body (not shown) is screwed from the upper part of FIG. 3, and the bottom part of the valve head (not shown) is seated on the valve seat 3, whereby the seal part 4 is sealed. The valve seat 3 is an annular ring, and the hole edge 31 between the inlet pipe port 51 and the valve seat 3 is rounded as shown in FIG. 4 showing an enlarged view of a portion B in FIG. Here, a 0.5 mm round process is applied.
次に、図５は本発明のバルブ装置の弁体２の構造図を示している。図５（１）は弁体２の正面図と底面図を示しており、また図５（２）は弁体２の斜視図を示している。また、図６（１），（２）は、それぞれ図５のＣ，Ｄの部分の拡大図である。図５，図６に示しているように、本発明のバルブ装置の弁体２は、弁頭２１の台座の側面部にあたる環状テーパー面裾部２２に小突起２４を設けている。
この環状テーパー面裾部２２に小突起２４を設けることで、シール部のシール性が従来と比べて格段に向上する。
例えば、図７に示すように３種類の弁頭２１を示している。本発明のバルブ装置の弁体２の弁頭２１は、図７（３）である。
Next, FIG. 5 shows a structural diagram of the valve body 2 of the valve device of the present invention. FIG. 5 (1) shows a front view and a bottom view of the valve body 2, and FIG. 5 (2) shows a perspective view of the valve body 2. 6 (1) and 6 (2) are enlarged views of portions C and D in FIG. 5, respectively. As shown in FIGS. 5 and 6, the valve body 2 of the valve device according to the present invention is provided with a small protrusion 24 on the annular tapered surface skirt portion 22 corresponding to the side surface portion of the base of the valve head 21.
By providing the small protrusion 24 on the annular tapered surface skirt portion 22, the sealing performance of the seal portion is significantly improved as compared with the conventional case.
For example, as shown in FIG. 7, three types of valve heads 21 are shown. The valve head 21 of the valve body 2 of the valve device of the present invention is shown in FIG.
図７（１）の場合、流入配管口５１の孔縁部３１のアール部は、弁頭２１の第１の台座２５のテーパー面２３と接している。この場合、圧接を繰り返す内に孔縁部３１のアール部が磨耗により削れ、テーパー面２３と接する部分の面積が増大し、締め付けトルクが大きくなり、軽い力でバルブ装置を動作させることが困難となる。
また図７（２）の場合、弁頭２１の第１の台座２５のテーパー面２３がアール加工されており、これが流入配管口５１の孔縁部３１のアール部と曲率半径がＲ０．５ｍｍで同じであるため、アール部同士が嵌合しあい面で密着する。このため締め付けトルクが大きくなり、軽い力でバルブ装置を動作させることが困難となる。
In the case of FIG. 7 (1), the rounded portion of the hole edge portion 31 of the inflow piping port 51 is in contact with the tapered surface 23 of the first pedestal 25 of the valve head 21. In this case, it is difficult to operate the valve device with a light force because the rounded portion of the hole edge portion 31 is scraped due to wear and the area of the portion in contact with the tapered surface 23 increases, the tightening torque increases, while the pressure contact is repeated. Become.
In the case of FIG. 7B, the tapered surface 23 of the first pedestal 25 of the valve head 21 is rounded, and this has a radius of curvature of R0.5 mm and the rounded portion of the hole edge portion 31 of the inflow piping port 51. Since they are the same, the rounded portions are fitted to each other and are in close contact with each other. For this reason, the tightening torque is increased, and it is difficult to operate the valve device with a light force.
これらに対して図７（３）に示すように、本発明のバルブ装置の弁体２の弁頭２１の場合、流入配管口５１の孔縁部３１のアール部は、弁頭２１の第１の台座２５のテーパー面２３に設けられた小突起２４と接している。小突起は、丸型山の頂部の曲率半径Ｒ1 を ０．５ｍｍとし、丸型山の裾野の曲率半径Ｒ2 を ０．２ｍｍに設定している。
かかる場合、小突起２４の頂点の凸部が、流入配管口５１の孔縁部３１のアール部の凸部と接することでシール性を向上する。また鋭角な部分がないため弁頭２１と弁座３の孔縁部３１との間が金属同士の摺動となって金属表面にとって最も過酷な状態となっても、軋み、かじり、焼付き等の問題が惹起され難くなる。
そして、弁体２における環状テーパー面裾部２２に、断面がアール状の丸型山の形状を成す小突起２４が突設され、かつ、弁座３の孔縁部３１がアール加工され、弁体２の弁頭２１の環状テーパー面裾部２２の小突起２４と弁座３の孔縁部３１が圧接する構成によって、圧接を繰り返すうちに小突起２４によって弁座３の孔縁部３１に凹部が形成され、小突起２４と該凹部が接近することにより生じるラビリング効果によって、シート部のシール性と耐久性を向上できるのである。また、小突起２４と弁座３の孔縁部３１が環状線で圧接するため、バルブの締め付けトルクを小さくでき、荷重がかかった場合でも軽い力で動作し得ることとなる。
On the other hand, as shown in FIG. 7 (3), in the case of the valve head 21 of the valve body 2 of the valve device of the present invention, the rounded portion of the hole edge 31 of the inflow piping port 51 is the first of the valve head 21. The small protrusion 24 provided on the tapered surface 23 of the pedestal 25 is in contact. In the small protrusion, the radius of curvature R 1 at the top of the round mountain is set to 0.5 mm, and the radius of curvature R 2 at the base of the round mountain is set to 0.2 mm.
In such a case, the convex portion at the apex of the small protrusion 24 is in contact with the convex portion of the rounded portion of the hole edge portion 31 of the inflow piping port 51 to improve the sealing performance. Further, since there is no acute angle portion, even if the metal surface slides between the valve head 21 and the hole edge 31 of the valve seat 3 and the metal surface is in the most severe state, itching, galling, seizure, etc. It becomes difficult to raise the problem.
Then, a small protrusion 24 having a rounded mountain shape with a rounded cross section is provided on the annular tapered surface skirt portion 22 of the valve body 2, and the hole edge 31 of the valve seat 3 is rounded, With the structure in which the small protrusion 24 of the annular tapered surface skirt 22 of the valve head 21 of the body 2 and the hole edge 31 of the valve seat 3 are in pressure contact, the small protrusion 24 causes the hole edge 31 of the valve seat 3 to contact the hole edge 31 of the valve seat 3 during repeated pressing. Since the recess is formed, and the labyling effect generated by the approach of the small protrusion 24 and the recess, the sealing performance and durability of the seat portion can be improved. Further, since the small protrusion 24 and the hole edge 31 of the valve seat 3 are pressed against each other with an annular line, the tightening torque of the valve can be reduced, and even when a load is applied, the valve can be operated with a light force.
本発明のバルブ装置は、不燃性と優れたシール性・耐久性が要求される高圧ガス設備に用いられる高圧弁として有用である。 The valve device of the present invention is useful as a high-pressure valve used in high-pressure gas equipment that requires nonflammability and excellent sealing properties and durability.
１ バルブ装置
２ 弁体
３ 弁座
４ シート部
５ 弁本体
６ 弁棒
７ ボンネット
８ 弁室
１１ａ，１１ｂ ハンドル部
２１ 弁頭
２２ 環状テーパー面裾部
２３ テーパー面
２４ 小突起
２５ 第１の台座
２６ 第２の台座
２７ ジャンクション部
３１ 孔縁部
５１ 流入配管口
５２ 流出配管口
DESCRIPTION OF SYMBOLS 1 Valve apparatus 2 Valve body 3 Valve seat 4 Seat part 5 Valve main body 6 Valve rod 7 Bonnet 8 Valve chamber 11a, 11b Handle part 21 Valve head 22 Annular taper surface hem part 23 Tapered surface 24 Small protrusion 25 First base 26 First base 26 2 pedestals 27 Junction section 31 Hole edge 51 Inflow piping port 52 Outflow piping port
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007320247A JP5062680B2 (en) | 2007-12-11 | 2007-12-11 | Valve device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007320247A JP5062680B2 (en) | 2007-12-11 | 2007-12-11 | Valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2009144754A JP2009144754A (en) | 2009-07-02 |
| JP5062680B2 true JP5062680B2 (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007320247A Active JP5062680B2 (en) | 2007-12-11 | 2007-12-11 | Valve device |
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| Country | Link |
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| JP (1) | JP5062680B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220129396A (en) * | 2021-03-16 | 2022-09-23 | 주식회사 코아오토모티브 | Motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7242029B2 (en) * | 2018-09-25 | 2023-03-20 | 株式会社フジキン | Solenoid valves, flow control devices, fluid control devices and semiconductor manufacturing equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3259951B2 (en) * | 1997-03-31 | 2002-02-25 | 千代田空調機器株式会社 | Valve device |
| JP3756135B2 (en) * | 2002-08-12 | 2006-03-15 | アドバンス電気工業株式会社 | Diaphragm valve structure |
| 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 |
| JP2005321060A (en) * | 2004-05-11 | 2005-11-17 | Kubota Corp | Valve for high temperature |
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2007
- 2007-12-11 JP JP2007320247A patent/JP5062680B2/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220129396A (en) * | 2021-03-16 | 2022-09-23 | 주식회사 코아오토모티브 | Motor |
| KR102580720B1 (en) * | 2021-03-16 | 2023-09-20 | 주식회사 코아오토모티브 | Motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009144754A (en) | 2009-07-02 |
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