WO2012104381A1 - Durchflussmengenbegrenzungseinrichtung - Google Patents
Durchflussmengenbegrenzungseinrichtung Download PDFInfo
- Publication number
- WO2012104381A1 WO2012104381A1 PCT/EP2012/051778 EP2012051778W WO2012104381A1 WO 2012104381 A1 WO2012104381 A1 WO 2012104381A1 EP 2012051778 W EP2012051778 W EP 2012051778W WO 2012104381 A1 WO2012104381 A1 WO 2012104381A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- limiting device
- valve body
- rate limiting
- flow rate
- flow
- 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.)
- Ceased
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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/01—Control of flow without auxiliary power
- G05D7/0126—Control of flow without auxiliary power the sensing element being a piston or plunger associated with one or more springs
- G05D7/0133—Control of flow without auxiliary power the sensing element being a piston or plunger associated with one or more springs within the flow-path
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7781—With separate connected fluid reactor surface
- Y10T137/7784—Responsive to change in rate of fluid flow
- Y10T137/7792—Movable deflector or choke
Definitions
- the invention relates to a flow rate limiting device with a spring-loaded valve body, which is arranged between a first and a second position axially displaceable upstream of a cross-sectional constriction in a flow channel, wherein the valve body is loaded by a spring in the direction of the first position, and wherein the flow at a given pressure gradient is greater in the first position than in the second position.
- a flow restrictor with a by a spring-loaded valve body wherein the spring heritage loaded valve body is disposed in a bottleneck of the flow channel.
- the nozzle-like shape of the wall of the housing in this case has longitudinal ribs, which form flow channels in the closed state of the valve body, through which a limited flow in the closed position of the valve body is possible.
- the object of the invention is to avoid these disadvantages and to provide a flow restrictor with low pressure drop in the open state and with low-delay response.
- this is achieved in that the cross-sectional constriction is bypassed by at least one bypass line, wherein the bypass line branches off upstream of the cross-sectional constriction from the flow channel and opens downstream of the cross-sectional constriction in the flow channel, wherein preferably the bypass line outside the flow channel in a housing of the flow rate limiting device is arranged.
- the valve body is guided by a fixed axial guide rod, wherein the guide rod downstream of the valve body may have a preferably adjustable stop, on which the valve body - - in the second position.
- the stop may for example be formed by a sleeve, which is arranged axially adjustable on the guide rod.
- the sleeve can at the same time also form the counter bearing for the spring.
- the flow-limiting device switches abruptly and independently, without any intervention or actuation from outside, wherein the switching forces for valve actuation are applied exclusively from fluidic effects.
- the defined stop in the region of the guide rod prevents the valve body from abutting the housing in its second position. In the second position thus remains a defined gap between the valve body and an inner circumferential surface of the housing, whereby a very rapid opening of the valve body from the second position out is possible.
- the inner circumferential surface of the housing which tapers in the flow direction, can be designed to be conical or nozzle-like.
- valve body has a biconical shape.
- another aerodynamic shape for the valve body can be selected.
- the rotationally symmetrical valve body has a non-linear curve as a generator.
- the switching point between the first and the second position is set to a differential pressure between a region of the flow channel upstream of the flow-limiting device and a region of the flow channel downstream of the flow-limiting device of a maximum of 500 mbar, preferably a maximum of 200 mbar , This results in a very sensitive and low-delay response.
- known flow-limiting device usually switch only at a pressure difference of about 1,000 mbar.
- the switching point is determined essentially by the aerodynamic shape of the valve body and the surrounding housing and by the interpretation of the spring force.
- the switching forces are applied purely from fluidic effects. In order to allow low pressure losses, the switching force must be increased via these fluidic effects.
- the switching point can be realized at extremely low pressure difference and completely without aktorik.
- FIG. 1 shows a flow rate limiting device according to the invention in a longitudinal section
- Fig. 2 is a pressure loss mass flow diagram.
- the flow rate limiting device 1 shown in FIG. 1 has a housing 2 with a flow channel 3, in which a valve body 4 is arranged on a fixed guide rod 5 axially displaceable in the region of a nozzle-like cross-sectional constriction 6.
- valve body 4 and the cross-sectional constriction 6 are bypassed by a bypass line 7, wherein the bypass line 7 branches off upstream of the valve body 4 from the flow channel 3 and opens again downstream of the cross-sectional constriction 6 in the flow channel 3.
- the guide rod 5 has a sleeve 8, on which a spring 9 is mounted, which biases the valve body 4 in a first position shown in FIG.
- Reference numeral 10 denotes a fastening nut for the guide rod 5.
- the valve body 4 is formed substantially doppelkonisch, whereby the lowest possible flow losses occur.
- the sleeve 8 forms a stop 11 for the valve body 4, wherein the valve body 4 rests in the second position on the stop 11.
- the stop 11 is adjusted via the sleeve 8 so that in the second position of the valve body 4, a defined gap between the conical lateral surface 4a of the valve body 4 and a conical lateral surface 2a of the housing 2 remains.
- This gap allows a rapid opening of the valve body 4 from the second position, so that the hysteresis can be kept as small as possible.
- the remaining gap can have a non-constant thickness by appropriate shaping of the lateral surface 4a of the valve body 4 and the lateral surface 2a of the housing 2.
- the differential pressure ⁇ is plotted against the volume flow V.
- the closing point of the valve body 4 denoted by reference numeral 13
- the device has a relatively low flow resistance. This is abruptly increased by the switching process, which causes the desired flow limitation.
- the switching point is at about 20 mbar to 200 mbar differential pressure between the upstream and the downstream region of the flow channel. 3
- the opening and closing characteristic of the valve body 4 is hysteresis.
- the hysteresis between the closing and opening of the valve body 4 is indicated by reference numeral 14. Due to the defined gap in the second position of the valve body 4 and the bypass channel 7, the hysteresis behavior 14 can be kept as small as possible. Due to the defined gap a small flow is possible even with "closed" valve body 4.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Safety Valves (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/983,560 US20140014200A1 (en) | 2011-02-03 | 2012-02-02 | Throughflow rate limiting device |
| DE112012000672.0T DE112012000672B4 (de) | 2011-02-03 | 2012-02-02 | Durchflussmengenbegrenzungseinrichtung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA144/2011 | 2011-02-03 | ||
| ATA144/2011A AT510989B1 (de) | 2011-02-03 | 2011-02-03 | Durchflussmengenbegrenzungseinrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012104381A1 true WO2012104381A1 (de) | 2012-08-09 |
Family
ID=45569632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2012/051778 Ceased WO2012104381A1 (de) | 2011-02-03 | 2012-02-02 | Durchflussmengenbegrenzungseinrichtung |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140014200A1 (de) |
| AT (1) | AT510989B1 (de) |
| DE (1) | DE112012000672B4 (de) |
| WO (1) | WO2012104381A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711966A (zh) * | 2013-12-14 | 2014-04-09 | 中国航空工业集团公司沈阳发动机设计研究所 | 一种自动调节的流量控制阀结构 |
| DE202017100042U1 (de) * | 2017-01-06 | 2018-04-13 | Hebmüller SRS Technik GmbH | Rückschlagventil |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015117072A1 (de) * | 2015-10-07 | 2017-04-13 | M-Tec Mathis Technik Gmbh | Fördervorrichtung und Verfahren zur Förderung eines in einem Silo vorgehaltenen Mediums |
| CN113454327B (zh) * | 2019-02-20 | 2023-06-06 | 皮尔伯格有限责任公司 | 用于燃料截止阀的限流装置 |
| CN111442118A (zh) * | 2020-05-18 | 2020-07-24 | 珠海格力电器股份有限公司 | 流量调节机构、进水阀及热水器 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3122162A (en) * | 1963-06-20 | 1964-02-25 | Asa D Sands | Flow control device |
| US4437493A (en) * | 1981-08-19 | 1984-03-20 | Kuniteru Okuda | Constant flow control valve |
| US4699166A (en) * | 1981-07-21 | 1987-10-13 | Harold Gold | Hydraulic fuse valve assembly |
| WO1992001184A1 (de) * | 1990-07-06 | 1992-01-23 | Pipelife Rohrsysteme Gesellschaft M.B.H. | Sicherheitsschliessvorrichtung |
| EP0969233A1 (de) | 1998-06-30 | 2000-01-05 | Watts Ocean B.V. | Durchflussbegrenzer |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1683720A (en) * | 1925-12-24 | 1928-09-11 | David L A Larsonneur | Governor for internal-combustion engines |
| US2749937A (en) * | 1952-10-14 | 1956-06-12 | Otis Eng Co | Excess flow valve |
| GB762219A (en) * | 1953-07-17 | 1956-11-28 | Otis Eng Co | Improvements in or relating to pressure responsive valve |
| US3085589A (en) * | 1960-06-06 | 1963-04-16 | Asa D Sands | Safety valve |
| US3683957A (en) * | 1970-09-29 | 1972-08-15 | Asa D Sands | Safety valve |
| AU470376B2 (en) * | 1972-11-22 | 1976-03-11 | Jamec Tools Pty. Ltd. | Improved valve |
| SE370111B (de) * | 1972-11-29 | 1974-09-30 | K Oehrn | |
| NL8602008A (nl) * | 1986-08-06 | 1988-03-01 | Grontmij N V | Klepsamenstel voor het begrenzen van de doorstroming door een vloeistofleiding. |
| US5004008A (en) * | 1990-04-02 | 1991-04-02 | Carrier Corporation | Variable area refrigerant expansion device |
| US5474105A (en) * | 1994-03-31 | 1995-12-12 | The Aro Corporation | Overrun control device |
| WO2002084423A1 (en) * | 2001-04-16 | 2002-10-24 | Advanced Safety Technologies, Inc. | Combination surge suppressor and safety shut-off valve |
| US20090107563A1 (en) * | 2005-09-06 | 2009-04-30 | Donald Gary Eichler | Safety valve having piston with modified orifice |
-
2011
- 2011-02-03 AT ATA144/2011A patent/AT510989B1/de not_active IP Right Cessation
-
2012
- 2012-02-02 US US13/983,560 patent/US20140014200A1/en not_active Abandoned
- 2012-02-02 WO PCT/EP2012/051778 patent/WO2012104381A1/de not_active Ceased
- 2012-02-02 DE DE112012000672.0T patent/DE112012000672B4/de not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3122162A (en) * | 1963-06-20 | 1964-02-25 | Asa D Sands | Flow control device |
| US4699166A (en) * | 1981-07-21 | 1987-10-13 | Harold Gold | Hydraulic fuse valve assembly |
| US4437493A (en) * | 1981-08-19 | 1984-03-20 | Kuniteru Okuda | Constant flow control valve |
| WO1992001184A1 (de) * | 1990-07-06 | 1992-01-23 | Pipelife Rohrsysteme Gesellschaft M.B.H. | Sicherheitsschliessvorrichtung |
| EP0969233A1 (de) | 1998-06-30 | 2000-01-05 | Watts Ocean B.V. | Durchflussbegrenzer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711966A (zh) * | 2013-12-14 | 2014-04-09 | 中国航空工业集团公司沈阳发动机设计研究所 | 一种自动调节的流量控制阀结构 |
| DE202017100042U1 (de) * | 2017-01-06 | 2018-04-13 | Hebmüller SRS Technik GmbH | Rückschlagventil |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140014200A1 (en) | 2014-01-16 |
| AT510989A1 (de) | 2012-08-15 |
| DE112012000672B4 (de) | 2018-10-11 |
| DE112012000672A5 (de) | 2014-01-02 |
| AT510989B1 (de) | 2012-11-15 |
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