JPS59144872A - Relief valve - Google Patents
Relief valveInfo
- Publication number
- JPS59144872A JPS59144872A JP59012810A JP1281084A JPS59144872A JP S59144872 A JPS59144872 A JP S59144872A JP 59012810 A JP59012810 A JP 59012810A JP 1281084 A JP1281084 A JP 1281084A JP S59144872 A JPS59144872 A JP S59144872A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- inlet
- cylinder
- relief valve
- poppet
- 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.)
- Pending
Links
- 238000013016 damping Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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
- F16K17/12—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side weight-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は特に回転ポンプ用のレリーフ弁に係るものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates in particular to a relief valve for a rotary pump.
回転すなわち転勤プランジャポンプの運転中、ポンプの
吸込＋側と圧力側との間の差圧が増大する。差圧により
生じる機械的および熱的過負荷からポンプを保護するた
め、入口側と排出側との間にレリーフ弁を差し込む。レ
リーフ弁を開閉する基準はポンプの入口側と排出側との
間の許容差圧である。レリーフ弁において必要な差圧は
弁ポペットすなわち円錐部材に重錘を装荷したり弁ポペ
ットを弾性的に装荷することにより生ずることができる
。しかしながら、各開きストロークにおいて同じ差圧を
保持するには、重錘な装荷した構造が好ましい。転勤プ
ランジャポンプに搬送方向に対して４５°の角度に配置
したレリーフ弁が、たとえば、ドイツ国公開特許出願第
２８４４０１９号に記載されている。During operation of a rotating or shifting plunger pump, the differential pressure between the suction + side and the pressure side of the pump increases. A relief valve is inserted between the inlet and discharge sides to protect the pump from mechanical and thermal overloads caused by differential pressure. The criterion for opening and closing the relief valve is the allowable differential pressure between the inlet side and the discharge side of the pump. The required differential pressure in a relief valve can be created by loading the valve poppet or cone with a weight or by elastically loading the valve poppet. However, a heavily loaded structure is preferred to maintain the same differential pressure on each opening stroke. A relief valve arranged at an angle of 45° to the conveying direction on a transfer plunger pump is described, for example, in DE 28 44 019 A1.
しかしながら、このドイツ国特許出願のレリーフ弁は次
の如き欠点を有している、すなわち、差圧が犬であると
重錘もまた太でなければならない。However, the relief valve of this German patent application has the following disadvantages: If the differential pressure is small, the weight must also be thick.
差圧がしばしば非常に大きいので必要な重錘が弁の大き
さを流れの断面によってではなく重錘の寸法により決め
るような寸法を有する。圧力が急に変ると、大きい重錘
が接続系統に騒々しいノックを生じることになる。ばね
を使用することは構造上の見地からより良い解決策では
ない。同じことはレバーの伝動装置により制御される弁
にもいえる０
本発明は寸法が必要な流れ断面により本質的に決まるレ
リーフ弁を提供するものである。この弁は重錘を装荷し
た弁ポペットにより制御することが好ましく弁の外部の
エネルギー源を使用せずに作動するようにする必要があ
る。Since the differential pressure is often very large, the required weight has dimensions such that the size of the valve is determined by the size of the weight and not by the flow cross section. If the pressure changes suddenly, the large weight will cause a noisy knock on the connection system. Using springs is not a better solution from a structural point of view. The same applies to valves controlled by a lever transmission. The present invention provides a relief valve whose dimensions are essentially determined by the required flow cross section. The valve is preferably controlled by a weight-loaded valve poppet and should be operated without the use of an energy source external to the valve.
本発明はその第１の面により、入口に面しシリンダ内で
案内される弁ポペットを有し、弁ポペットの上方のスペ
ースが圧力平衡孔を介して入口に連通し、シリンダの直
径（Ｄｌ）が弁の入口の直径（Ｄ２）とは相違している
レリーフ弁を提供する。According to its first side, the invention has a valve poppet facing the inlet and guided within the cylinder, the space above the valve poppet communicating with the inlet via a pressure balancing hole, the diameter of the cylinder (Dl) is different from the valve inlet diameter (D2).
本発明の別の面により、入口に面しシリンダ内で案内さ
れている弁ポペットを有し、弁ポペットの上方のスペー
スが、パイプを介して入口に連通し、シリンダの直径（
Ｄｌ）が弁の入口の直径（Ｄ２）とは相違しているレリ
′−フ弁を提供する。According to another aspect of the invention, the valve poppet faces the inlet and is guided within the cylinder, the space above the valve poppet communicating with the inlet via a pipe, the diameter of the cylinder (
A relief valve is provided in which the diameter (D1) of the inlet of the valve is different from the diameter (D2) of the inlet of the valve.
従って、弁ポペットには環状面の差により決まる圧力の
みが作用する。Therefore, only the pressure determined by the annular surface difference acts on the valve poppet.
本発明の好ましい具体例を以下にレリーフ弁を横断面で
示す添付図面を参照して例示的に説明する。A preferred embodiment of the invention will now be described by way of example with reference to the accompanying drawing, which shows a relief valve in cross section.
弁ハウジングが符号１で示しである。弁カバー２には中
空のシリンダ３が設けてあり、このシリンダの内面はな
めらかに機械加工され、シリンダは頂部（弁カバー）が
閉じられ底部が開放している。弁ポペットすなわち円錐
部材４により制御し、ポペットの底部は弁座に着座し頂
部はシリンダ３内を容易に摺動する。弁ポペット４内に
は孔５が形成されこの孔は弁ポペット４の下方のスペー
ス７を弁ポペットの上方のスペース８に連通して圧力を
平衡に保持する。特定の差圧に対して必要な重錘はＤｌ
とＤ２とを対応して選択することにより決門り、Ｄｌは
シリンダ３の直径でありＤ２は弁座（または入口）の直
径である。弁が閉じた位置にある時シリンダ３を通る逆
流損失を低く保つため、ピストンリング６が設けである
。これらピストンリングはまた圧力が急激に変動すると
減衰エレメントとして作用する。また弁ポペット内の孔
５の直径Ｄ３を選択することにより弁の減衰に影響を及
ぼすことができる。The valve housing is designated by the numeral 1. The valve cover 2 is provided with a hollow cylinder 3, the inner surface of which is machined smoothly, and the cylinder is closed at the top (valve cover) and open at the bottom. It is controlled by a valve poppet or conical member 4 whose bottom part seats in the valve seat and whose top part slides easily within the cylinder 3. A hole 5 is formed in the valve poppet 4 which communicates a space 7 below the valve poppet 4 with a space 8 above the valve poppet to maintain pressure equilibrium. The weight required for a specific pressure difference is Dl
and D2, Dl is the diameter of the cylinder 3 and D2 is the diameter of the valve seat (or inlet). A piston ring 6 is provided to keep backflow losses through the cylinder 3 low when the valve is in the closed position. These piston rings also act as damping elements when pressure fluctuates rapidly. It is also possible to influence the damping of the valve by selecting the diameter D3 of the bore 5 in the valve poppet.
以上説明した構造は直径Ｄ１を基準として直径Ｄ２を対
応して選択することにより弁ポペットの重量を任意に変
え構造上の要件に合致させることができる。このことは
弁が補助的手段を使用しない小型軽量の構造で簡単に吸
着できるということを意味する。The structure described above allows the weight of the valve poppet to be arbitrarily varied to meet structural requirements by correspondingly selecting the diameter D2 with reference to the diameter D1. This means that the valve is of compact and lightweight construction and can be easily adsorbed without the use of auxiliary means.
圧力平衡孔５または、パイプ１０は弁ポペットの上側と
下側との間の断面寸法を圧力平衡が数秒後にのみ生じる
ようにすると好ましい。The pressure equalization hole 5 or the pipe 10 preferably has a cross-sectional dimension between the upper side and the lower side of the valve poppet such that pressure equalization occurs only after a few seconds.
添付図面は本発明に係るレリーフ弁の断面図である。
３・・・・ シリンダ、 ４・・・・ 弁ポペット、
５・・・・ 孔、 １０・・・・ パイプ。The accompanying drawing is a sectional view of a relief valve according to the invention. 3... Cylinder, 4... Valve poppet,
5...hole, 10...pipe.
Claims (6)
トを有し、弁ポペットの上方のスペースが圧力平衡孔を
介して入口に連通し、シリンダの直径（Ｄｌ）が弁の入
口の直径（Ｄ２）とは相違していることを特徴とするレ
リーフ弁。(1) having a valve poppet facing the inlet and guided in the cylinder, the space above the valve poppet communicating with the inlet through a pressure equalization hole, and the cylinder diameter (Dl) being the diameter of the valve inlet; A relief valve that is different from (D2).
面寸法が圧力平衡が数秒後にのみ生じるように寸法付け
しである特許請求の範囲第１項のレリーフ弁。(2) The relief valve of claim 1, wherein the cross-sectional dimension of the pressure equalization hole between the upper and lower sides of the valve poppet is dimensioned such that pressure equalization occurs only after a few seconds.
部がピストンリングで密封されている特許請求の範囲第
１−項および第２項のいずれかによるレリーフ弁。(3) A relief valve according to any one of claims 1 and 2, wherein the guide portion between the valve poppet shaft and the guide cylinder is sealed with a piston ring.
トを有し、弁ポペットの上方のスペースがパイプを介し
て入口に連通し、シリンダの直径（ＤＩ）が弁入口の直
径（Ｄ２）とは相違していることを特徴とするレリーフ
弁。(4) having a valve poppet facing the inlet and guided within the cylinder, the space above the valve poppet communicating with the inlet via a pipe, and the diameter of the cylinder (DI) being the diameter of the valve inlet (D2); A relief valve characterized by being different from.
法が圧力平衡が数秒後にのみ生じるように寸法付けしで
ある特許請求の範囲第４項のレリーフ弁。5. The relief valve of claim 4, wherein the cross-sectional dimension of the pipe between the upper and lower sides of the valve poppet is dimensioned such that pressure equilibrium occurs only after a few seconds.
部かピストンリングで密封されて℃・る特許請求の範囲
第４項および第５項のいづれか１つのレリーフ弁。(6) The relief valve according to any one of claims 4 and 5, wherein the guide portion between the valve poppet shaft and the guide cylinder is sealed by a piston ring.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833302784 DE3302784A1 (en) | 1983-01-28 | 1983-01-28 | OVERFLOW VALVE WITH DIFFERENTIAL PRESSURE CONTROL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59144872A true JPS59144872A (en) | 1984-08-20 |
Family
ID=6189394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59012810A Pending JPS59144872A (en) | 1983-01-28 | 1984-01-26 | Relief valve |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS59144872A (en) |
| DE (1) | DE3302784A1 (en) |
| FR (1) | FR2540218B1 (en) |
| GB (1) | GB2134224B (en) |
| IT (1) | IT1173002B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4795131A (en) * | 1986-10-24 | 1989-01-03 | Albany International Corp. | Vacuum controller |
| GB2260595B (en) * | 1991-10-17 | 1995-05-31 | Dowty Aerospace Gloucester | A pressure relief valve |
| DE4421955A1 (en) * | 1994-06-23 | 1996-01-04 | Leybold Ag | Valve for vacuum pump |
| WO2004104463A1 (en) | 2003-05-26 | 2004-12-02 | Danfoss A/S | A servo valve for a vacuum system |
| GB2525217B (en) * | 2014-04-16 | 2017-02-08 | Siemens Healthcare Ltd | A Pressure relief valve arrangement |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1900861U (en) * | 1964-06-26 | 1964-09-17 | Siebeck Metallwerk G M B H | VALVE ACTUATED BY THE PRESSURE TO BE SHUT OFF. |
| US3249144A (en) * | 1964-09-23 | 1966-05-03 | Berg Mfg & Sales Co | Tire pressure system and valve |
| ES349707A1 (en) * | 1967-05-15 | 1969-04-01 | Caterpillar Tractor Co | Relief valve |
| GB1359140A (en) * | 1971-12-13 | 1974-07-10 | Brown Tractors Ltd | Hydraulic system |
| DE2543319A1 (en) * | 1975-09-29 | 1977-04-07 | Pfeiffer Vakuumtechnik | Dead weight pressure relief valve - has vibration of valve head damped by rotary motion imparted by spiral groove |
| DE2833314A1 (en) * | 1978-07-29 | 1980-02-14 | Rost & Soehne Georg | Self-closing hydraulic fitting - has plug seal with rear faces acting radially against groove base |
| DE2844019A1 (en) * | 1978-10-09 | 1980-04-17 | Leybold Heraeus Gmbh & Co Kg | VACUUM PUMP, ESPECIALLY RUBBER VACUUM PUMP |
| US4270885A (en) * | 1979-05-07 | 1981-06-02 | Ingersoll-Rand Company | Unloading means for a gas compressor |
| DE3200471A1 (en) * | 1982-01-09 | 1983-07-21 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar | OVERFLOW VALVE |
-
1983
- 1983-01-28 DE DE19833302784 patent/DE3302784A1/en not_active Ceased
-
1984
- 1984-01-10 FR FR8400298A patent/FR2540218B1/en not_active Expired
- 1984-01-11 IT IT19109/84A patent/IT1173002B/en active
- 1984-01-19 GB GB08401453A patent/GB2134224B/en not_active Expired
- 1984-01-26 JP JP59012810A patent/JPS59144872A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2540218A1 (en) | 1984-08-03 |
| GB8401453D0 (en) | 1984-02-22 |
| IT1173002B (en) | 1987-06-18 |
| GB2134224B (en) | 1986-02-26 |
| IT8419109A0 (en) | 1984-01-11 |
| DE3302784A1 (en) | 1984-08-02 |
| FR2540218B1 (en) | 1986-05-02 |
| GB2134224A (en) | 1984-08-08 |
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