JPS5993578A - Relief valve - Google Patents
Relief valveInfo
- Publication number
- JPS5993578A JPS5993578A JP20117382A JP20117382A JPS5993578A JP S5993578 A JPS5993578 A JP S5993578A JP 20117382 A JP20117382 A JP 20117382A JP 20117382 A JP20117382 A JP 20117382A JP S5993578 A JPS5993578 A JP S5993578A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- pressure
- relief valve
- magnetic fluid
- magnetic pole
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は気体圧力調整用のすＩ７−フ弁に関し、殊に
磁性流体シールを用いて極く微小な圧力の調整が可能の
リリーフ弁を提供することを目的とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a relief valve for regulating gas pressure, and in particular, an object of the present invention is to provide a relief valve that is capable of extremely minute pressure adjustment using a magnetic fluid seal. It is something.
従来のリリーフ弁は、ばね圧を調節することによって設
定圧力を調整するものであった。従がって最低調整圧力
は３ないし５ ｋｇｆ、＃止りであって１気圧以下のリ
リーフ圧力を得ることは困難であった。Conventional relief valves adjust the set pressure by adjusting spring pressure. Therefore, the minimum adjustment pressure is 3 to 5 kgf, and it is difficult to obtain a relief pressure of 1 atm or less.
本発明は、ばねを用いずに、磁性流体シールによって回
路圧を保持するようにし、所定の圧力以上の回路圧が加
わった時に上記磁性流体シールが瞬間的に破断して過圧
力を逃すようＫすることができ、且つ上記所定の圧力値
の設定１よいし変更が容易であるとの知見に基（もので
あって、１ｋｇｆ肩以下の調整は勿論、０．００１ ｋ
ｇ凶という極く微小圧の調整も可能なリリーフ弁を提供
し得るものである。The present invention maintains circuit pressure by a magnetic fluid seal without using a spring, and when circuit pressure exceeding a predetermined pressure is applied, the magnetic fluid seal momentarily ruptures to release the overpressure. Based on the knowledge that it is possible to set or change the predetermined pressure value, it is easy to set or change the predetermined pressure value.
It is possible to provide a relief valve that can also adjust extremely small pressures.
以１図示の好適な実施例に基いて本発明の詳細な説明す
ると、第１図において、圧力配管より分岐した分岐管１
Ｆ（本発明の一実施例のリリーフパルプ２のハウジン
グ３が直立するように螺合しである。該ハウジングの内
径は三段に形成し【あり、第１段目３１に図示の如く偏
心カム９が設けである、該カム９はカム軸９１を左右に
回動することによってコア部材５を上下することができ
る。このコア部材５の底部の７ランジ状部分５１は前記
ハウジング３の内径二段目３２に土下渭動自在に嵌入し
ており、上部５２は円錐台となっていて環状の磁極部′
材６１．６２に対峙している。尚上記７ランジ状部分５
１には通気孔５３が穿孔しである。貨’Ｊ ’６ｔ’、
磁極部拐６１、６２は永久磁石６０両ＴＪｆｉ、、ｉ本
端にそれぞれ配設され、且つハウジング３の三段目内径
部分３３に図示の如く装着されている。符号７は蓋であ
って天井部は凹面をなし、エア逃し孔８が穿〕゛〔ある
。該エア逃し孔８０入口部周囲には更に堰７Ｉを設けで
ある。前記コア部材５のテーパ７ｉ１１分５２の外径と
永久磁石６及び磁極部１’６１．６２が形成する磁束通
路部分には磁性流体４が封入してあって核部分をシール
している。The present invention will be described in detail based on the preferred embodiment shown in Figure 1. In Figure 1, a branch pipe 1 branched from a pressure pipe is shown.
F (The housing 3 of the relief pulp 2 in one embodiment of the present invention is screwed together so that it stands upright.The inner diameter of the housing is formed in three stages, and the first stage 31 has an eccentric cam as shown in the figure. The cam 9 can move the core member 5 up and down by rotating the cam shaft 91 left and right. It is fitted into the stage 32 so as to be able to slide freely under the ground, and the upper part 52 is a truncated cone and has an annular magnetic pole part'.
It is facing material 61.62. In addition, the above 7 lunge-shaped portions 5
1 has a ventilation hole 53 perforated therein. Currency 'J '6t',
The magnetic pole pieces 61 and 62 are respectively disposed at the ends of the permanent magnets 60, TJfi, and i, and are attached to the third inner diameter portion 33 of the housing 3 as shown. Reference numeral 7 is a lid, the ceiling part of which has a concave surface, and has an air escape hole 8 perforated therein. A weir 7I is further provided around the entrance of the air escape hole 80. A magnetic fluid 4 is sealed in a magnetic flux path portion formed by the outer diameter of the taper 7i11/52 of the core member 5, the permanent magnet 6, and the magnetic pole portion 1'61, 62 to seal the core portion.
以上の構成になる本発明のリリーフ弁において＋ｔ、先
づカム軸９１を回動して偏心カム９によってコア部＠５
の上下位置を調節して前記磁性流体シールのギャップを
調節することによっ°〔シーリング圧を所定の圧力Ｐｔ
Ｋ害ツドツトと、回路圧Ｐが一上記所定の圧力ＰＬを超
えて渇い場合には上記磁性流体シールが破断し、回路圧
力が瞬間的に解放さＡ１．て所定の圧力Ｐｔに調整され
る。このギャップの′尖きさとリリーフ圧ＰＬとの関係
は第・１図に示すように感度が尺＜ 、０．００１ ｋ
ｇｕ−ｆの調整も口ｊ飴である尚上記磁性流体シールが
破断してエアがエア逃し孔８かも逃げる時ｔｔｃ、ｍ性
流体４も該逃し孔から吹き飛ばされて散逸し１しま５恐
れがｔ）る。これを防ぐために蓋７の天井部分は凹面と
しｈ更に逃し孔８０入口部分には堰７１を設けであるが
、これに限定するものではない。In the relief valve of the present invention having the above configuration, first, the camshaft 91 is rotated and the core portion @5 is rotated by the eccentric cam 9.
By adjusting the vertical position of the magnetic fluid seal and adjusting the gap of the magnetic fluid seal, the sealing pressure can be adjusted to a predetermined pressure Pt.
If the circuit pressure P exceeds the predetermined pressure PL, the magnetic fluid seal ruptures and the circuit pressure is momentarily released.A1. The pressure is adjusted to a predetermined pressure Pt. The relationship between the sharpness of this gap and the relief pressure PL is as shown in Figure 1, where the sensitivity is < 0.001 k.
Adjustment of gu-f is also a hassle.In addition, when the above-mentioned magnetic fluid seal is broken and air escapes from the air relief hole 8, there is a possibility that the magnetic fluid 4 will also be blown away from the air relief hole and dissipated. t). In order to prevent this, the ceiling portion of the lid 7 is made concave, and a weir 71 is provided at the entrance of the relief hole 80, but the present invention is not limited to this.
第２図に示すものは、本発明の他の実施例であって磁性
流体シールのギャップは同定とし、磁石１６が電磁石で
あり、図示しない公知の電気回路によって該電磁石１６
に通電するｍ流密度を変更することによって蝉力を調角
ｊし、磁性流体シールのシーリング力を調節してリリー
フ圧を調整するものである。FIG. 2 shows another embodiment of the present invention in which the magnetic fluid seal gap is identified, the magnet 16 is an electromagnet, and a known electrical circuit (not shown) is used to connect the electromagnet 16.
By changing the density of the current flowing through the magnetic fluid, the angle of the cicada force is adjusted, and the sealing force of the magnetic fluid seal is adjusted to adjust the relief pressure.
尚コア部材１５は磁極部材１２と一体に形成し、該磁極
部材１２、電磁石１６等によって個性流体用のリザーバ
を形成し、該磁極部材１２（ζエア逃し孔１８がするこ
とができる。The core member 15 is formed integrally with the magnetic pole member 12, and the magnetic pole member 12, the electromagnet 16, etc. form a reservoir for individual fluid, and the magnetic pole member 12 (ζ air escape hole 18 can be formed).
第３図に示したものは、リリーフ圧力が固定のものの実
施例であって、且つむ１（置きに使用したものである。The one shown in FIG. 3 is an embodiment in which the relief pressure is fixed, and is used as a holder.
図においてハウジング２３に：Ｊア都伺ゐと永久磁石冗
及び磁極部材２１、Ｕが所定のシールギャップを形成す
るように図示の如く装着してあり、エア逃し孔路を有す
る蓋部＠２７が協働して磁性流体ムのリザーバを構成し
ている。上記磁性流体又は所定の磁化特性を有するもの
とし、前記コア部材すの外周円筒部を所定のシーリング
力でシールしてイル。従がってリリーフ圧力はこのシー
リングカに見合った一雉のものとなっている。In the figure, the housing 23 is fitted with a permanent magnet, a permanent magnet, a magnetic pole member 21, and U to form a predetermined sealing gap as shown in the figure, and a lid part @27 having an air relief hole passage. Together, they form a reservoir for the ferrofluidic fluid. The magnetic fluid or one having a predetermined magnetization characteristic is used to seal the outer peripheral cylindrical portion of the core member with a predetermined sealing force. Therefore, the relief pressure is just a pheasant commensurate with this sealing force.
紙上の説明によって明らかな通り、本発明のリリーフ弁
は磁性流体シールのシーリング力が、シールギャップや
磁界の大きさ、磁性流体の磁化特性等に対し又一定の関
係があり、且つこれらを変化させることによって敏感に
調節し得るとの知見１０、基いて発明されたものであっ
て、空圧装置にお・ける微小な気体圧力を感度良く調整
することを可能とするものである。As is clear from the explanation on the paper, in the relief valve of the present invention, the sealing force of the magnetic fluid seal has a certain relationship with the seal gap, the magnitude of the magnetic field, the magnetization characteristics of the magnetic fluid, etc., and these can be changed. This invention was based on the knowledge10 that it is possible to adjust the gas pressure sensitively by adjusting the gas pressure in a pneumatic device.
第１図は本発明の一実施例を示す縦断面図、第２図及び
第３図はそれぞれ他の実施例を示す断面図、第４ ［！
；／ｌけ磁性流体シールのギャップとリリーフ圧どの関
貧２を示す１図である。
杓号の説明
４．１４．２４・・・・・・磁性流体 ５．１５、か・
・・・−・コア部材 ６．２６・・・・・・永久磁石
１６・・・・・・１に磁石 １２．２１、ｎ、６１．６
２・・・・・・磁極部材 ８．１８、あ・・・・・・エ
ア逃し孔。
特許出願人 日本精工株式会社
第１図
第２図
第３図FIG. 1 is a vertical sectional view showing one embodiment of the present invention, FIGS. 2 and 3 are sectional views showing other embodiments, and the fourth [!
;/l is a diagram illustrating the gap and relief pressure of a magnetic fluid seal. Explanation of the ladle number 4.14.24...Magnetic fluid 5.15.
...- Core member 6.26 ... Permanent magnet
16...1 magnet 12.21, n, 61.6
2... Magnetic pole member 8.18, Ah... Air relief hole. Patent applicant: NSK Ltd. Figure 1 Figure 2 Figure 3
Claims (1)
リリーフ弁であって、圧力配管から分岐して設けた通気
孔を有するコア部材と、該コア部材と同軸に設けた環状
の永久磁石または電磁石と、該磁石の両磁極端に配設し
た磁極部材と、該磁極部祠が形成する磁束通路に磁性流
体シールを＋１４成するように刺入した磁性流体と、該
磁性流体の散逸を防止するべく設けた有蓋のリザーバと
を備え、上記リザーバにはエア逃し用の小孔を穿っであ
ることを特徴と゛するリリーフ弁。 （２１１Ｊ９−７弁の最小調整圧力が」気圧以下である
特許請求の範囲第１項記載のリリーフ弁。 （３）リザーバは磁石の両磁極端に配設した磁極部拐ｇ
ｃよって形成した特ｉｔ’ ｉ！ｖ求の範囲第１項また
は第２項のいづれかに記載のすＩＪ−フ弁。 （４）磁極部材が形成する磁束通路内にコア部材が挿入
されており、且つ核部はテーパ状であって、コア部材の
磁極部材に対する位置なＮ整することによって磁性流体
シールのシールギャップを調節してリリーフ圧力を調整
するようにし２、特許請求の範囲第１項ないし第３項の
いづれかｒ（記載のリリーフ弁。 （５）磁極部材が形成する磁気回路に、非磁性材の部４
ｄを挿入することによって磁束密度の大きさを変え、磁
性流体シールのシーリング力を調節して。 リリーフ圧力を訓読するようにした特π′「請求の範囲
第１項ないし第３項のいづれかに記載のリリーフ弁。 （６） ｉ石が電磁石である場合に、該電磁石に通電
する電流密度を変更することによって磁性流体シールの
シーリング力を調節し又リリーフ圧力を調整するように
した特許請求の範囲第１項ないし第３項のいづれかに記
載のリリーフ弁。[Scope of Claims] (1) A relief valve for adjusting gas pressure in a pneumatic device, comprising a core member having a vent branched from a pressure pipe, and a core member provided coaxially with the core member. An annular permanent magnet or an electromagnet, a magnetic pole member disposed at both magnetic pole ends of the magnet, a magnetic fluid inserted in a magnetic flux path formed by the magnetic pole part so as to form a magnetic fluid seal, and the magnetic 1. A relief valve comprising a covered reservoir provided to prevent fluid from dissipating, the reservoir having a small hole for air release. (The relief valve according to claim 1, wherein the minimum adjustment pressure of the 211J9-7 valve is less than or equal to atmospheric pressure.
The special it' i! formed by c! The IJ-F valve according to either the first or second item of the range of requirements. (4) The core member is inserted into the magnetic flux path formed by the magnetic pole member, and the core portion is tapered, and the seal gap of the magnetic fluid seal is closed by aligning the position of the core member with respect to the magnetic pole member. (5) The magnetic circuit formed by the magnetic pole member is provided with a non-magnetic material portion 4.
By inserting d, the magnitude of the magnetic flux density is changed and the sealing force of the magnetic fluid seal is adjusted. The relief valve according to any one of claims 1 to 3, which is adapted to read the relief pressure. (6) When the stone is an electromagnet, the current density flowing through the electromagnet is 4. A relief valve according to claim 1, wherein the sealing force of the magnetic fluid seal and the relief pressure are adjusted by changing the relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20117382A JPS5993578A (en) | 1982-11-18 | 1982-11-18 | Relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20117382A JPS5993578A (en) | 1982-11-18 | 1982-11-18 | Relief valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5993578A true JPS5993578A (en) | 1984-05-30 |
| JPH0243067B2 JPH0243067B2 (en) | 1990-09-27 |
Family
ID=16436567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20117382A Granted JPS5993578A (en) | 1982-11-18 | 1982-11-18 | Relief valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5993578A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6131709A (en) * | 1997-11-25 | 2000-10-17 | Lord Corporation | Adjustable valve and vibration damper utilizing same |
| CN105180483A (en) * | 2015-10-10 | 2015-12-23 | 广西广拓新能源科技有限公司 | Heat-preservation water pipe |
| CN108488452A (en) * | 2018-06-26 | 2018-09-04 | 邢箫 | A kind of gasification method of industry petroleum liquid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58672A (en) * | 1981-06-25 | 1983-01-05 | Kiyuubitsuku Eng:Kk | Safety valve device |
-
1982
- 1982-11-18 JP JP20117382A patent/JPS5993578A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58672A (en) * | 1981-06-25 | 1983-01-05 | Kiyuubitsuku Eng:Kk | Safety valve device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6131709A (en) * | 1997-11-25 | 2000-10-17 | Lord Corporation | Adjustable valve and vibration damper utilizing same |
| CN105180483A (en) * | 2015-10-10 | 2015-12-23 | 广西广拓新能源科技有限公司 | Heat-preservation water pipe |
| CN108488452A (en) * | 2018-06-26 | 2018-09-04 | 邢箫 | A kind of gasification method of industry petroleum liquid |
| CN108488452B (en) * | 2018-06-26 | 2019-11-05 | 扬州市品冠体育用品有限公司 | A kind of gasification method of industry petroleum liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0243067B2 (en) | 1990-09-27 |
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