EP0203986A1 - Zweiwege-stromregelventil - Google Patents

Zweiwege-stromregelventil

Info

Publication number
EP0203986A1
EP0203986A1 EP86900289A EP86900289A EP0203986A1 EP 0203986 A1 EP0203986 A1 EP 0203986A1 EP 86900289 A EP86900289 A EP 86900289A EP 86900289 A EP86900289 A EP 86900289A EP 0203986 A1 EP0203986 A1 EP 0203986A1
Authority
EP
European Patent Office
Prior art keywords
current sensor
control valve
compensator
sensor
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.)
Withdrawn
Application number
EP86900289A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hans Schwelm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hydrolux SARL
Original Assignee
Hydrolux SARL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hydrolux SARL filed Critical Hydrolux SARL
Publication of EP0203986A1 publication Critical patent/EP0203986A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/005—Control of flow characterised by the use of auxiliary non-electric power combined with the use of electric means
    • 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
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7759—Responsive to change in rate of fluid flow
    • 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
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7761—Electrically actuated valve

Definitions

  • the invention relates to a two-way flow control valve with a hydraulic compensator which can be displaced axially in a cylindrical housing for regulating the flow between an inlet opening and one or more radial outlet openings provided in the housing wall, a control valve for controlling the compensator position , a current sensor for detecting the flow rate, a displacement sensor for detecting the position of the current sensor and for
  • valves are generally known and are used to detect and control the flow of a quantity of liquid in a line.
  • the liquid is mostly oil, for example in hydraulic control devices, but the application is not limited to oil.
  • the present invention has for its object to provide a novel valve of the type mentioned above, with a more compact construction than the conventional valves and which allows much faster switching times.
  • the two-way flow control valve shown in the figure is provided in the knee of a hydraulic line 2 and is intended to determine the flow in the direction of the arrow to control.
  • the two-way flow control valve is mounted with its housing 4 in such a way that its piston sleeve 6 sits coaxially in the inlet section 2a and vertically in the outlet section 2b.
  • the base surface of the cylindrical piston sleeve 6 is designed as an inlet opening 8, while one or more radial outlet openings 10 are provided in the wall of the piston sleeve 6.
  • the flow from inlet 8 in the direction of line section 2b is regulated by a hydraulic cylindrical compensator 12 which is arranged in the piston sleeve 6 and which is axially displaceable between a closed position (see figure and a more or less open position).
  • the upper, narrower part of the compensator 12 forms with the inner wall of the piston sleeve 6 a cylindrical annular space 14 in which a helical spring 16 is arranged around the compensator 12. This spring is between the upper base surface of the piston sleeve 6 and a shoulder of the compensator
  • the oil-filled annular space 14 is connected to a control valve 18 which controls the oil pressure in the annular space 14. The position of the compensator 12 and therefore the flow through the opening (s)
  • a current sensor 20 designed as an axially displaceable piston is mounted coaxially in the interior of the compensator 12.
  • the lower edge of the sensor 20 sits on the inner surface 22 of an insert 24 converging towards the opening 8 in the piston sleeve 6.
  • the sensor 20 When the sensor 20 is lifted, it forms from this inner surface the changing annular gap between the sensor 20 and the conical inner surface is the measuring point for detecting the flow.
  • the opposite end of the current sensor 20 is exposed to the action of a helical spring 26 which is supported on the one hand on the housing 4 and on the other hand on the current sensor 20 and presses it towards the closed position.
  • the current sensor 20 is hydrostatically completely balanced by means of a longitudinal bore 28 and a plurality of transverse bores 30.
  • the vertical position of the current sensor 20 is preferably determined electronically by a displacement sensor 32 known per se.
  • This displacement sensor 32 which therefore detects the actual value of the flow in the direction of the arrow, is connected to the control valve 18 via a control unit 34 which determines the setpoint.
  • the oil pressure in the annular chamber 14 is increased via the control valve 18 in order to shift the compensator 12 in the direction of a reduction in the outlet openings 10.
  • the position of the current sensor 20 adapts to the reduction in the flow under the action of the spring 26. This process continues until the actual value of the flow is equal to the setpoint. If the flow is too small, which is determined by the “sensor” position being too “low”, then the oil pressure in the annular space 14 is reduced via the control valve 18, which has the consequence that the compensator 12 is under the effect of the pressure in the line section 2a moved upwards and the outlet openings 10 enlarged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Flow Control (AREA)
  • Safety Valves (AREA)
  • Fluid-Driven Valves (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
EP86900289A 1984-12-21 1985-12-19 Zweiwege-stromregelventil Withdrawn EP0203986A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU85707A LU85707A1 (de) 1984-12-21 1984-12-21 Zweiwege-stromregelventil
LU85707 1984-12-21

Publications (1)

Publication Number Publication Date
EP0203986A1 true EP0203986A1 (de) 1986-12-10

Family

ID=19730380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86900289A Withdrawn EP0203986A1 (de) 1984-12-21 1985-12-19 Zweiwege-stromregelventil

Country Status (7)

Country Link
US (1) US4724864A (fi)
EP (1) EP0203986A1 (fi)
JP (1) JPS62501657A (fi)
CA (1) CA1280335C (fi)
FI (1) FI89637C (fi)
LU (1) LU85707A1 (fi)
WO (1) WO1986003855A1 (fi)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4922852A (en) * 1986-10-30 1990-05-08 Nordson Corporation Apparatus for dispensing fluid materials
US5054650A (en) * 1986-10-30 1991-10-08 Nordson Corporation Method of compensating for changes in the flow characteristics of a dispensed fluid to maintain the volume of dispensed fluid at a setpoint
US4988015A (en) * 1986-10-30 1991-01-29 Nordson Corporation Method for dispensing fluid materials
US4842162A (en) * 1987-03-27 1989-06-27 Nordson Corporation Apparatus and method for dispensing fluid materials using position-dependent velocity feedback
IN167170B (fi) * 1987-05-14 1990-09-15 Hitachi Construction Machinery
EP0309643B1 (de) * 1987-09-28 1992-11-25 Landis & Gyr Business Support AG Stellglied zur Beeinflussung der Durchflussmenge eines gasförmigen oder flüssigen Mediums
LU87831A1 (de) * 1990-10-31 1991-02-18 Hydrolux Sarl Einstellbares proportional-drosselventil mit rueckfuehrung
US6035878A (en) * 1997-09-22 2000-03-14 Fisher Controls International, Inc. Diagnostic device and method for pressure regulator
JP4212187B2 (ja) * 1999-06-25 2009-01-21 アドバンスド エナジー ジャパン株式会社 排気装置の圧力制御システム
US6619139B2 (en) * 2001-02-16 2003-09-16 Enginuity, Llc Gas flow sensor and high pressure gaseous fuel injection system
US6725876B2 (en) * 2001-10-15 2004-04-27 Woodward Governor Company Control valve with integrated electro-hydraulic actuator
US7080656B2 (en) * 2003-09-11 2006-07-25 Fisher Controls International Llc. Variable vent diffuser
US7921867B2 (en) 2006-09-06 2011-04-12 Olmsted Products Co. Elbow plug external sleeve valve
US20110114202A1 (en) * 2009-11-13 2011-05-19 John Goseco Water Flow Monitor
US9297467B1 (en) 2014-01-23 2016-03-29 John O. Goseco Fluid leak detector apparatus
NL2020053B1 (nl) * 2017-12-11 2019-06-19 N V Nederlandsche Apparatenfabriek Nedap Melkmeter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388672A (en) * 1943-08-13 1945-11-13 Fischer & Porter Co Flow measuring device
US3182500A (en) * 1961-03-06 1965-05-11 Yokogawa Electric Corp Rotameter transmitter
DE3015724A1 (de) * 1977-05-17 1981-10-29 G.L. Rexroth Gmbh, 8770 Lohr Durchflussregelgeraet
DE2722239B2 (de) * 1977-05-17 1980-12-18 G.L. Rexroth Gmbh, 8770 Lohr Durchflußmeßgerät
DE3040521A1 (de) * 1980-10-28 1982-05-27 Robert Bosch Gmbh, 7000 Stuttgart Vorgesteuerte vorrichtung zur lastunabbhaengigen regelung wenigstens eines volumenstromes proportional zu einem eingangssignal
ZA828528B (en) * 1981-12-09 1983-09-28 Sperry Corp Flow sensor with extended low flow range

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8603855A1 *

Also Published As

Publication number Publication date
US4724864A (en) 1988-02-16
FI89637C (fi) 1993-10-25
FI863373A0 (fi) 1986-08-20
LU85707A1 (de) 1985-07-24
FI89637B (fi) 1993-07-15
CA1280335C (en) 1991-02-19
JPS62501657A (ja) 1987-07-02
WO1986003855A1 (en) 1986-07-03
FI863373A (fi) 1986-08-20

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19861218

17Q First examination report despatched

Effective date: 19880414

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880826

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHWELM, HANS