JP2000249000A - Compressed natural gas regulator - Google Patents
Compressed natural gas regulatorInfo
- Publication number
- JP2000249000A JP2000249000A JP11049282A JP4928299A JP2000249000A JP 2000249000 A JP2000249000 A JP 2000249000A JP 11049282 A JP11049282 A JP 11049282A JP 4928299 A JP4928299 A JP 4928299A JP 2000249000 A JP2000249000 A JP 2000249000A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- bead
- natural gas
- compressed natural
- decompression chamber
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は圧縮天然ガス用レギ
ュレータ（以下ＣＮＧレギュレータという）に関するも
ので、より詳しくは、該レギュレータにおけるダイアフ
ラム部のシール構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regulator for compressed natural gas (hereinafter referred to as a CNG regulator), and more particularly to a seal structure for a diaphragm in the regulator.
【０００２】[0002]
【従来の技術】従来、圧縮天然ガス（以下ＣＮＧとい
う）を自動車のエンジンの燃料として使用するために、
自動車に搭載されたボンベ内のＣＮＧを所定圧に減圧す
るＣＮＧレギュレータが使用され、このＣＮＧレギュレ
ータとして図３に示すようなものが知られている。2. Description of the Related Art Conventionally, in order to use compressed natural gas (hereinafter referred to as CNG) as fuel for an automobile engine,
A CNG regulator that reduces CNG in a cylinder mounted on an automobile to a predetermined pressure is used, and such a CNG regulator as shown in FIG. 3 is known.
【０００３】この図３に示すＣＮＧレギュレータは、入
口１０１から流入した高圧のＣＮＧが、フィルタ１０
２、通路１０３、通路１０４を通じて弁ハウジング１０
５内の部屋１０６内へ流入し、調圧バルブ１０７の開状
態において減圧室１０８へ流入して減圧され、通路１０
９を通じて出口１１０からエンジンへ供給されるように
なっている。また、減圧室１０８内におけるＣＮＧが所
定圧以上になると、その燃圧によって調圧スプリング１
１１の付勢力に抗してダイアフラム１１２を図３の上方
へ押し上げ、該ダイアフラム１１２部に連結された前記
調圧バルブ１０７を持ち上げてシート１１３部を閉じ、
また、減圧室１０８内におけるＣＮＧの燃圧が所定圧以
下になると調圧スプリング１１１の付勢力によってダイ
アフラム１１２が下降して、調圧バルブ１０７がシート
１１３から離間し、燃圧と調圧スプリング１１１のバラ
ンスにより減圧室１０８内の燃圧を所定値に維持するよ
うになっている。[0003] The CNG regulator shown in FIG.
2, the valve housing 10 through the passage 103 and the passage 104
5, flows into the pressure reducing chamber 108 when the pressure regulating valve 107 is open, and is decompressed.
The fuel is supplied from the outlet 110 to the engine through the pipe 9. Further, when CNG in the decompression chamber 108 becomes equal to or higher than a predetermined pressure, the pressure adjusting spring 1 is activated by the fuel pressure.
3. The diaphragm 112 is pushed upward in FIG. 3 against the urging force of 11, and the pressure regulating valve 107 connected to the diaphragm 112 is lifted to close the seat 113,
When the fuel pressure of CNG in the decompression chamber 108 becomes equal to or lower than a predetermined pressure, the diaphragm 112 is lowered by the urging force of the pressure adjustment spring 111, the pressure adjustment valve 107 is separated from the seat 113, and the fuel pressure and the pressure adjustment spring 111 are balanced. Thus, the fuel pressure in the decompression chamber 108 is maintained at a predetermined value.
【０００４】そして、前記ダイアフラム１１２のビード
部のシール構造は、一般にダイアフラム１１２のビード
部１１４をボデー１１５とカバー１１６で単に狭持して
構成されている。[0004] The seal structure of the bead portion of the diaphragm 112 is generally constituted by simply holding the bead portion 114 of the diaphragm 112 between the body 115 and the cover 116.
【０００５】また、ダイアフラムのシール構造として、
図４に示すように、一方の狭持体２０１のダイアフラム
接触面側に溝２０２を形成して該溝２０２にＯリング２
０３を配置し、ダイアフラム２０４の薄膜状周縁２０５
の一方の面を、前記一方の狭持体２０１における外周部
２０６とＯリング２０３で圧接し、他方の面を他方の狭
持体２０７で圧接するようにしたものが実開平３−３９
６５８号公報に開示されている。Further, as a diaphragm seal structure,
As shown in FIG. 4, a groove 202 is formed on one of the holding members 201 on the side of the diaphragm contact surface, and the O-ring 2 is formed in the groove 202.
03, and the thin film-like peripheral edge 205 of the diaphragm 204 is disposed.
Is pressed against the outer peripheral portion 206 of the one holding member 201 with an O-ring 203 and the other surface is pressed with the other holding member 207.
658.
【０００６】更に、図５に示すように、一方の狭持体３
０１と他方の狭持体３０２とでダイアフラム３０３のビ
ード部３０４を狭持し、更に、ダイアフラム３０３とは
別の位置においてＯリング３０５を配置して二重シール
構造にしたものが、特開平９−２１７８４４号公報に開
示されている。[0006] Further, as shown in FIG.
01 and the other holding member 302 sandwich the bead portion 304 of the diaphragm 303, and further, an O-ring 305 is arranged at a position different from the diaphragm 303 to form a double seal structure. -217844.
【０００７】[0007]
【発明が解決しようとする課題】前記図３に示すように
ダイアフラム１１２のビード部１１４を単に狭持するも
のにおいては、１重シール構造であるため、そのシール
性が弱く、減圧室１０８内の燃圧を１ＭＰａ以上の高圧
に設定すると、そのＣＮＧがその燃圧によって外部へ洩
れるおそれがある。As shown in FIG. 3, when the bead portion 114 of the diaphragm 112 is simply sandwiched, the sealability is weak because of a single sealing structure. If the fuel pressure is set to a high pressure of 1 MPa or more, the CNG may leak to the outside due to the fuel pressure.
【０００８】また、前記図４に示すような、外周部２０
６とＯリング２０３による二重シール構造のものをＣＮ
Ｇレギュレータに適用した場合においても、減圧室内の
ＣＮＧの燃圧を１ＭＰａ以上に設定すると、その二重シ
ールのみではＣＮＧが外部へ洩れるおそれがある。Further, as shown in FIG.
6 and an O-ring 203 with CN
Even when applied to the G regulator, if the fuel pressure of CNG in the decompression chamber is set to 1 MPa or more, CNG may leak to the outside only with the double seal.
【０００９】また、前記図５に示すようなシール構造を
ＣＮＧレギュレータに適用した場合には、Ｏリング３０
５によってＣＮＧが外部へ洩れることは防止されるとし
てもビード部３０４が一重シール構造であるため、ＣＮ
Ｇがその燃圧によって室３０６（大気室）へ洩れるおそ
れがある。When a seal structure as shown in FIG. 5 is applied to a CNG regulator, an O-ring 30
5 prevents CNG from leaking to the outside, but since the bead portion 304 has a single seal structure, CN
G may leak to the chamber 306 (atmosphere chamber) due to the fuel pressure.
【００１０】そこで本発明は、ＣＮＧレギュレータにお
けるダイアフラムの狭持部において、減圧室内のＣＮＧ
がその燃圧によって外部へ洩れないようにしたシール構
造を有する圧縮天然ガス用レギュレータを提供すること
を目的とするものである。[0010] Therefore, the present invention provides a CNG regulator in which a CNG in a decompression chamber is provided at a holding portion of a diaphragm.
It is an object of the present invention to provide a compressed natural gas regulator having a seal structure that is prevented from leaking outside due to its fuel pressure.
【００１１】[0011]
【課題を解決するための手段】前記の課題を解決するた
めに、請求項１記載の第１の発明は、圧縮天然ガスを減
圧する減圧室と大気室とを区画するダイアフラムの周縁
部を、減圧室側の狭持体と大気室側の狭持体で狭持する
ものにおいて、ダイアフラムにおける周縁部の減圧室側
の面を、ダイアフラムに形成したビード部と、減圧室側
の狭持体に形成した前記ビート部以外の狭持面と、該狭
持面部の一部に設けたＯリングとでシールするようにし
たことを特徴とするものである。According to a first aspect of the present invention, in order to solve the above-mentioned problems, a peripheral portion of a diaphragm that partitions a decompression chamber for decompressing compressed natural gas from an atmosphere chamber is provided. In the one held by the holding body on the decompression chamber side and the holding body on the atmosphere chamber side, the peripheral surface of the diaphragm on the decompression chamber side is connected to a bead formed on the diaphragm and the holding body on the decompression chamber side. It is characterized in that sealing is performed by a holding surface other than the formed beat portion and an O-ring provided on a part of the holding surface portion.
【００１２】請求項２記載の第２の発明は、圧縮天然ガ
スを減圧する減圧室と大気室とを区画するダイアフラム
の周縁部を、減圧室側の狭持体と大気室側の狭持体で狭
持するものにおいて、ダイアフラムの外周部に減圧室側
の面へ突出するビードを形成し、減圧室側の狭持体に
は、前記ビードが嵌合するビード嵌合溝と、該ビード嵌
合溝より径方向の内側に位置する狭持面と、該狭持面の
一部に位置するＯリング嵌合溝を形成し、ダイアフラム
のビードを前記ビード嵌合溝に嵌合して圧接し、前記ビ
ードの径方向の内側におけるダイアフラムの周部を前記
減圧室側の狭持面とＯリングに圧接するようにしたこと
を特徴とするものである。According to a second aspect of the present invention, a peripheral portion of a diaphragm that divides a decompression chamber for decompressing compressed natural gas and an air chamber is provided with a holding member on the decompression chamber side and a holding member on the air chamber side. A bead is formed on the outer peripheral portion of the diaphragm so as to protrude toward the surface on the decompression chamber side, and a bead fitting groove in which the bead is fitted is formed on the holding body on the decompression chamber side; A holding surface located radially inward of the mating groove, and an O-ring fitting groove located at a part of the holding surface are formed, and a bead of the diaphragm is fitted and pressed into the bead fitting groove. The peripheral portion of the diaphragm on the radially inner side of the bead is pressed against the holding surface on the decompression chamber side and the O-ring.
【００１３】本発明においては、ダイアフラムにおける
周縁部の減圧室側面が、ダイアフラムのビード部と狭持
面とＯリングとでシールされ、３重シール構造となる。
そのため、従来の１重や２重のシール構造に比べてシー
ル性が高くなり、減圧室内の圧縮天然ガスを１ＭＰａ以
上の燃圧に設定した場合にも、減圧室内の圧縮天然ガス
が外部へ洩れることを確実に防止できる。In the present invention, the side surface of the decompression chamber at the periphery of the diaphragm is sealed by the bead portion, the holding surface, and the O-ring of the diaphragm to form a triple seal structure.
Therefore, the sealing performance is higher than that of the conventional single or double sealing structure, and even when the compressed natural gas in the decompression chamber is set to a fuel pressure of 1 MPa or more, the compressed natural gas in the decompression chamber leaks to the outside. Can be reliably prevented.
【００１４】[0014]
【発明の実施の形態】図１及び図２に示す実施例に基い
て本発明の実施の形態について説明する。図１におい
て、ボデー１にはＣＮＧの入口２が形成され、ＣＮＧは
フィルタ３、通路４、遮断弁５の弁部６、通路７を通じ
て部屋８内に流入するようになっている。前記部屋８内
にはハウジング９が収納され、該ハウジング９内に調圧
バルブ１０が昇降可能に収納されている。更に、前記ハ
ウジング９にはポート１１が形成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described based on the embodiment shown in FIGS. In FIG. 1, an inlet 2 for CNG is formed in a body 1, and CNG flows into a room 8 through a filter 3, a passage 4, a valve portion 6 of a shutoff valve 5, and a passage 7. A housing 9 is housed in the room 8, and a pressure regulating valve 10 is housed in the housing 9 so as to be able to move up and down. Furthermore, a port 11 is formed in the housing 9.
【００１５】前記調圧バルブ１０は前記部屋８の上部に
配置したシート１２と接離可能に対向しており、該調圧
バルブ１０が下動してシート１２より離間すると部屋８
内の高圧のＣＮＧが環状隙間１３を通じて減圧室１４内
へ供給され、また、調圧バルブ１０が上動してシート１
２に当接すると部屋８内のＣＮＧが減圧室１４内へ供給
されないようになっている。The pressure regulating valve 10 is opposed to the seat 12 disposed on the upper part of the room 8 so as to be able to contact and separate from the seat 12. When the pressure regulating valve 10 moves down and separates from the seat 12, the room 8
The high-pressure CNG in the inside is supplied into the decompression chamber 14 through the annular gap 13, and the pressure regulating valve 10 is moved upward to seat 1.
2, CNG in the room 8 is not supplied into the decompression chamber 14.
【００１６】ボデー１の上部にはカバー１５が固着さ
れ、ボデー１とカバー１５間にダイアフラム１６の周縁
部１６ａが介在されて、該周縁部１６ａがボデー１とカ
バー１５により狭持されている。そして、このダイアフ
ラム１６により前記減圧室１４と大気室１７とに区画さ
れている。ダイアフラム１６の中央部はダイアフラムホ
ルダ１８とシェル１９とで狭持されているとともにその
ダイアフラムホルダ１８の下部に前記調圧バルブ１０の
上端が嵌合状態で連結され、ダイアフラム１６の上昇に
より調圧バルブ１０が上動してシート１２部を閉塞し、
ダイアフラム１６の下降により調圧バルブ１０が下動し
てシート１２部を開口するようになっている。A cover 15 is fixed to an upper portion of the body 1, and a peripheral portion 16 a of a diaphragm 16 is interposed between the body 1 and the cover 15, and the peripheral portion 16 a is held between the body 1 and the cover 15. The diaphragm 16 partitions the pressure reducing chamber 14 and the atmosphere chamber 17. A central portion of the diaphragm 16 is sandwiched between a diaphragm holder 18 and a shell 19, and an upper end of the pressure regulating valve 10 is connected to a lower portion of the diaphragm holder 18 in a fitted state. 10 moves upward and closes 12 sheets of the seat,
When the diaphragm 16 is lowered, the pressure regulating valve 10 is moved downward to open the seat 12.
【００１７】前記シェル１９と前記カバー１５に設けた
調整ねじ２０間にはダイアフラム１６を下方へ付勢する
調圧スプリング２１が介在され、該調圧スプリング２１
の付勢力と前記減圧室１４内のＣＮＧの燃圧とのバラン
スによりダイアフラム１６が昇降して、すなわち調圧バ
ルブ１０が開閉作動して減圧室１４内のＣＮＧの燃圧を
所定の低圧に維持するようになっている。A pressure adjusting spring 21 for urging the diaphragm 16 downward is interposed between the adjusting screw 20 provided on the shell 19 and the cover 15.
The diaphragm 16 is moved up and down by the balance between the urging force of the pressure and the fuel pressure of CNG in the pressure reducing chamber 14, that is, the pressure regulating valve 10 is opened and closed to maintain the fuel pressure of CNG in the pressure reducing chamber 14 at a predetermined low pressure. It has become.
【００１８】前記減圧室１４内の減圧されたＣＮＧは、
ボデー１に形成した出口２２より自動車のエンジンへ供
給される。前記ダイアフラム１６の周縁部１６ａのシー
ル構造について図２により詳述する。The depressurized CNG in the decompression chamber 14 is
An outlet 22 formed in the body 1 is supplied to the engine of the automobile. The sealing structure of the peripheral portion 16a of the diaphragm 16 will be described in detail with reference to FIG.
【００１９】ダイアフラム１６は可撓性材料で薄膜円板
状に形成されているとともにその周縁部１６ａの下面
側、すなわち減圧室１４側の面にはビード１６ｂが全周
に亙って一体形成されている。The diaphragm 16 is formed of a flexible material in the form of a thin film disk, and a bead 16b is integrally formed on the lower surface side of the peripheral portion 16a, that is, on the surface on the side of the decompression chamber 14, over the entire circumference. ing.
【００２０】減圧室側の狭持体であるボデー１のダイア
フラム狭持面、すなわちボデー１の上面には、前記ダイ
アフラム１６のビード１６ｂが嵌合するビード嵌合溝２
３が全周に亙って形成され、該溝２３の外周部に突部２
４が全周に亙って形成されている。更に、ビード嵌合溝
２３より径方向の内側には、前記突部２４の上面よりも
低い面からなる狭持面２５が形成され、該狭持面２５に
Ｏリング嵌合溝２６が全周に亙って形成されている。該
Ｏリング嵌合溝２６内にはシール用のＯリング２７が嵌
入されている。A bead fitting groove 2 into which a bead 16b of the diaphragm 16 fits is provided on the diaphragm holding surface of the body 1 which is a holding body on the decompression chamber side, that is, on the upper surface of the body 1.
3 is formed over the entire circumference, and the protrusion 2
4 are formed over the entire circumference. Further, a holding surface 25 formed of a surface lower than the upper surface of the projection 24 is formed radially inside the bead fitting groove 23, and an O-ring fitting groove 26 is formed in the holding surface 25 over the entire circumference. Formed. An O-ring 27 for sealing is fitted in the O-ring fitting groove 26.
【００２１】また、前記突部２４の上面からのビード嵌
合溝２３の深さは前記ダイアフラム１６のビード１６ｂ
の厚みよりも浅く形成され、前記突部２４の上面からの
狭持面２５までの段差は、ダイアフラム１６におけるビ
ード１６ｂより内側の周部１６ｃ、すなわち狭持される
部分の板厚よりも小さく設定されている。The depth of the bead fitting groove 23 from the upper surface of the projection 24 is determined by the bead 16b of the diaphragm 16.
And the step from the upper surface of the projection 24 to the holding surface 25 is set smaller than the peripheral portion 16c of the diaphragm 16 inside the bead 16b, that is, the plate thickness of the portion to be held. Have been.
【００２２】大気室１７側の狭持体であるカバー１５の
下面は平面に形成されて狭持面２８を形成している。そ
して、大気室１７側の狭持体であるカバー１５を、その
狭持面２８がボデー１の突部２４の上面に当接するよう
にしてボデー１に連結すると、ダイアフラム１６のビー
ド１６ｂの下面がビード嵌合溝２３の底面に圧接し、ダ
イアフラム１６の周部１６ｃの下面がボデー１の狭持面
２５とＯリング２７に圧接し、また、ビード１６ｂと周
部１６ｃの上面がカバー１５の狭持面２８に圧接する。The lower surface of the cover 15, which is the holding body on the side of the atmosphere chamber 17, is formed flat and forms a holding surface 28. When the cover 15, which is a holding body on the side of the atmosphere chamber 17, is connected to the body 1 such that the holding surface 28 is in contact with the upper surface of the projection 24 of the body 1, the lower surface of the bead 16 b of the diaphragm 16 is The lower surface of the peripheral portion 16c of the diaphragm 16 presses against the holding surface 25 of the body 1 and the O-ring 27, and the upper surface of the bead 16b and the upper surface of the peripheral portion 16c make the cover 15 narrow. It presses against the holding surface 28.
【００２３】したがって、ダイアフラム１６における周
縁部１６ａの下面側、すなわち減圧室１４側の面は、ビ
ード１６ｂと狭持面２５及びＯリング２７による３重シ
ール構造でシールされる。Accordingly, the lower surface side of the peripheral edge portion 16a of the diaphragm 16, that is, the surface on the side of the decompression chamber 14, is sealed by a triple seal structure by the bead 16b, the holding surface 25 and the O-ring 27.
【００２４】このように減圧室１４側を３重シール構造
にしたことにより、前記従来の１重や２重シール構造に
比べてシール性が高くなり、減圧室１４内の燃圧を１Ｍ
Ｐａ以上に設定した場合にも減圧室１４内のＣＮＧが外
部へ漏れることを確実に防止することができる。Since the pressure reducing chamber 14 has a triple sealing structure, the sealing performance is higher than that of the conventional single or double sealing structure, and the fuel pressure in the pressure reducing chamber 14 is reduced to 1M.
Even when the pressure is set to Pa or more, it is possible to reliably prevent CNG in the decompression chamber 14 from leaking to the outside.
【００２５】また、ダイアフラム１６は、前記調圧バル
ブ１０を微少に昇降させるものであるため、そのダイア
フラム１６の昇降ストロークも微少である。そのため、
前記のように、両狭持面２５，２８を減圧室１４まで形
成してもダイアフラム１６の作動には支障とならない。Further, since the diaphragm 16 raises and lowers the pressure regulating valve 10 minutely, the up-and-down stroke of the diaphragm 16 is also small. for that reason,
As described above, even if both holding surfaces 25 and 28 are formed up to the decompression chamber 14, the operation of the diaphragm 16 is not hindered.
【００２６】[0026]
【発明の効果】以上のように本発明によれば、減圧室内
の圧縮天然ガスの燃圧を１ＭＰａ以上に設定した場合で
も、ダイアフラムの周縁部から減圧室内の圧縮天然ガス
が外部へ洩れることを確実に防止できる。As described above, according to the present invention, even when the fuel pressure of the compressed natural gas in the decompression chamber is set to 1 MPa or more, it is ensured that the compressed natural gas in the decompression chamber leaks from the periphery of the diaphragm to the outside. Can be prevented.
【図１】本発明のＣＮＧレギュレータの実施例を示す縦
断面図。FIG. 1 is a longitudinal sectional view showing an embodiment of a CNG regulator of the present invention.
【図２】図１におけるダイアフラムの周縁部のシール構
造を示す拡大断面図。FIG. 2 is an enlarged sectional view showing a seal structure of a peripheral portion of a diaphragm in FIG.
【図３】従来のＣＮＧレギュレータを示す縦断面図。FIG. 3 is a longitudinal sectional view showing a conventional CNG regulator.
【図４】従来のダイアフラムの周縁部のシール構造を示
す断面図。FIG. 4 is a cross-sectional view showing a conventional seal structure at the periphery of a diaphragm.
【図５】従来のダイアフラムの他のシール構造を示す断
面図。FIG. 5 is a sectional view showing another sealing structure of a conventional diaphragm.
１ 減圧室側の狭持体であるボデー １４ 減圧室 １５ 大気圧室側の狭持体であるカバー １６ ダイアフラム １６ａ 周縁部 １６ｂ ビード １７ 大気室 ２３ ビード嵌合溝 ２５ 狭持面 ２６ Ｏリング嵌合溝 ２７ Ｏリング ２８ 狭持面 DESCRIPTION OF SYMBOLS 1 Body which is a holding body of the decompression room side 14 Decompression room 15 Cover which is a holding body of the atmospheric pressure room side 16 Diaphragm 16a Peripheral part 16b Bead 17 Atmosphere room 23 Bead fitting groove 25 Nipping surface 26 O-ring fitting Groove 27 O-ring 28 Holding surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小笠原 啓夫 愛知県大府市共和町一丁目１番地の１ 愛 三工業株式会社内 (72)発明者 福田 秀行 愛知県大府市共和町一丁目１番地の１ 愛 三工業株式会社内 (72)発明者 稲生 忠夫 愛知県大府市共和町一丁目１番地の１ 愛 三工業株式会社内 (72)発明者 五十嵐 幸平 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内 Ｆターム(参考） 3E072 AA01 GA30 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroo Ogasawara 1-1 1-1 Kyowa-cho, Obu City, Aichi Prefecture Inside Ai San Industry Co., Ltd. (72) Inventor Hideyuki Fukuda 1-1-1 Kyowa-cho, Obu City, Aichi Prefecture 1 Ai San Kogyo Co., Ltd. (72) Inventor Tadao Ino 1-1-1, Kyowa-cho, Obu City, Aichi Prefecture 1 Ai San Kogyo Co., Ltd. (72) Kohei Igarashi 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor F term in the company (reference) 3E072 AA01 GA30
Claims (2)
とを区画するダイアフラムの周縁部を、減圧室側の狭持
体と大気室側の狭持体で狭持するものにおいて、 ダイアフラムにおける周縁部の減圧室側の面を、ダイア
フラムに形成したビード部と、減圧室側の狭持体に形成
した前記ビート部以外の狭持面と、該狭持面部の一部に
設けたＯリングとでシールするようにしたことを特徴と
する圧縮天然ガス用レギュレータ。1. A diaphragm in which a peripheral portion of a diaphragm that partitions a decompression chamber for decompressing compressed natural gas and an atmosphere chamber is held by a holding member on the decompression chamber side and a holding member on the atmosphere chamber side. A bead portion formed on the diaphragm, a holding surface other than the beat portion formed on the holding body on the decompression chamber side, and an O-ring provided on a part of the holding surface portion A regulator for compressed natural gas, characterized by being sealed with.
とを区画するダイアフラムの周縁部を、減圧室側の狭持
体と大気室側の狭持体で狭持するものにおいて、 ダイアフラムの外周部に減圧室側の面へ突出するビード
を形成し、減圧室側の狭持体には、前記ビードが嵌合す
るビード嵌合溝と、該ビード嵌合溝より径方向の内側に
位置する狭持面と、該狭持面の一部に位置するＯリング
嵌合溝を形成し、ダイアフラムのビードを前記ビード嵌
合溝に嵌合して圧接し、前記ビードの径方向の内側にお
けるダイアフラムの周部を前記減圧室側の狭持面とＯリ
ングに圧接するようにしたことを特徴とする圧縮天然ガ
ス用レギュレータ。2. A method in which a peripheral portion of a diaphragm that partitions a decompression chamber for decompressing compressed natural gas and an atmosphere chamber is held by a holding member on the decompression chamber side and a holding member on the atmosphere chamber side. A bead projecting to the surface on the side of the decompression chamber is formed on the outer peripheral portion. A holding surface to be formed, an O-ring fitting groove located at a part of the holding surface, a bead of the diaphragm is fitted into the bead fitting groove and pressed against, and a radial inside of the bead is formed. A regulator for compressed natural gas, wherein a peripheral portion of the diaphragm is pressed against the holding surface on the decompression chamber side and the O-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04928299A JP3649612B2 (en) | 1999-02-26 | 1999-02-26 | Regulator for compressed natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04928299A JP3649612B2 (en) | 1999-02-26 | 1999-02-26 | Regulator for compressed natural gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000249000A true JP2000249000A (en) | 2000-09-12 |
| JP3649612B2 JP3649612B2 (en) | 2005-05-18 |
Family
ID=12826533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04928299A Expired - Fee Related JP3649612B2 (en) | 1999-02-26 | 1999-02-26 | Regulator for compressed natural gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3649612B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100427935B1 (en) * | 2001-06-15 | 2004-04-28 | 현대자동차주식회사 | Pressure control device of LPG bombe |
| US6763849B2 (en) | 2001-06-15 | 2004-07-20 | Aisan Kogyo Kabushiki Kaisha | Gas valve |
| KR100727785B1 (en) | 2006-05-24 | 2007-06-13 | (주)모토닉 | Regulator for reducing gas pressure |
| JP2020193608A (en) * | 2019-05-30 | 2020-12-03 | 株式会社不二工機 | Pressure reducing valve |
-
1999
- 1999-02-26 JP JP04928299A patent/JP3649612B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100427935B1 (en) * | 2001-06-15 | 2004-04-28 | 현대자동차주식회사 | Pressure control device of LPG bombe |
| US6763849B2 (en) | 2001-06-15 | 2004-07-20 | Aisan Kogyo Kabushiki Kaisha | Gas valve |
| KR100727785B1 (en) | 2006-05-24 | 2007-06-13 | (주)모토닉 | Regulator for reducing gas pressure |
| JP2020193608A (en) * | 2019-05-30 | 2020-12-03 | 株式会社不二工機 | Pressure reducing valve |
| JP7349697B2 (en) | 2019-05-30 | 2023-09-25 | 株式会社不二工機 | Pressure reducing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3649612B2 (en) | 2005-05-18 |
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