WO1994023231A1 - Systeme de vanne d'arret a servocommande - Google Patents

Systeme de vanne d'arret a servocommande Download PDF

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Publication number
WO1994023231A1
WO1994023231A1 PCT/DK1994/000144 DK9400144W WO9423231A1 WO 1994023231 A1 WO1994023231 A1 WO 1994023231A1 DK 9400144 W DK9400144 W DK 9400144W WO 9423231 A1 WO9423231 A1 WO 9423231A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
over
change
piston
indicator means
Prior art date
Application number
PCT/DK1994/000144
Other languages
English (en)
Inventor
Hans Nørgaard PEDERSEN
Original Assignee
Abb District Heating
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 Abb District Heating filed Critical Abb District Heating
Priority to GB9519929A priority Critical patent/GB2292420B/en
Priority to PL94310943A priority patent/PL310943A1/xx
Priority to DE4491874T priority patent/DE4491874T1/de
Priority to AU64249/94A priority patent/AU6424994A/en
Publication of WO1994023231A1 publication Critical patent/WO1994023231A1/fr
Priority to SE9503439A priority patent/SE503992C2/sv
Priority to FI954760A priority patent/FI954760A/fi

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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
    • F16K31/163—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston
    • F16K31/1635—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston for rotating valves

Definitions

  • the present invention relates to a servo operated stop valve installation, particularly for use in sub ⁇ terranean pipelines such as district heating systems, comprising a valve with an associated change-over motor and a power- or operating station located in an easily accessible place at distance from the stop valve.
  • valve/motor unit can be totally buried and only through a current or hydraulic conduit be connected to the said operating station, which can be laid out in a nearby walkway cabi ⁇ net.
  • the valve can then be actuated without any obstruc ⁇ tion of the traffic.
  • an almost inverse problem can occur, namely that the valve so to speak never is actuated, whereby the swivelling part can get very stuck, and it is therefore a further advantage of the motor-actuated valves that it is possible to work with higher operating force than by manual actuation.
  • the associated pump equipment can be placed in the walkway cabinet, and down by the valve a hydraulic cylinder with a piston body can be placed, which by displacement respectively the one and the other way causes the spindel of the valve to rotate by co-operation between a toothed bar on the piston body and a toothed ring on the spindel.
  • Fig. 1 is a schematic and partly sectional view of a system according to the invention.
  • Fig. 2 is a corresponding view of a modified sys ⁇ tem.
  • the shown dotted transversal line a shows the ground level, below which is mounted a stop valve with valve spindel 2 designed with a toothed ring 4.
  • This co-operates with a toothing 6 on a slide body 8, which at the ends constitute piston parts 10 co-operating with respective cylinder parts 12 and 14, which are strongly restrained to a common non-illustrated base.
  • the two cylinder parts 12 and 14 have a cylinder head 16, in which is made a central bore 18 and a through channel 20 connected therewith. Furthermore these cylinder heads have a through channel 22 outside the central bore 18.
  • the slide body 8 is illustrated in a left hand-side position with possibility of performing a displacement towards the right corresponding to what is necessary for turning the spindel 2 through 90°, i.e. for actuating the stop valve between closed and open position.
  • the two channels 20 and 22 at each end of the sys ⁇ tem is connected to a common hydraulic conduit, respec ⁇ tively 26 and 28, being connected to a hydraulic change ⁇ over valve unit 30 in the walkway cabinet.
  • these conduits can be connected in a switchable way to respectively the pressure side of a hydraulic pump 32 with suction reservoir 34 and the same or preferably a separate receiving reservoir 36.
  • the pump 32 can be started for pushing the slide body 8 towards the right for changing- over the stop valve, while succeedingly it is possible. after changing-over the valve unit 30, to provoke a re ⁇ turn motion of the valve.
  • a check valve 38 allowing inflow of hydraulic fluid from the conduits 26 and 28 to the channels 22, but preclud ⁇ ing an outflow the opposite way, and the channels 22 are on the stopside of these check valves connected through respective conduits 40 and 42 with a separate portion of the change-over unit 30, through which these conduits are alternatingly connectable to, respectively, the one and the other of the conduits 44 and 46, leading to an indicator unit 48 placed in the walkway cabinet, respectively to a receiving reservoir 50 connected therewith.
  • the indicator unit 48 has a cylinder part 52, in which is mounted a slide 54, which can be pushed from side to side by admission of pressure fluid through the respective conduits 44 and 46.
  • the slide 54 is shaped with a constriction 56, which can co-operate with the one or the other of two spring-load ⁇ ed balls 58 being connected with respective projecting arm parts 60, having at their outer end a projecting part 62, which will clearly indicate visually whether the slide 54 is in the one or the other outer position, according to the projecting part 60,62 being more or less projecting from the unit 48.
  • the central bore 18 will be blocked by the piston pin part 24, whereby it will only be the fluid in the chamber 18 which will eventually escape to the tank 36, whereas the fluid in the surrounding chamber is forced to the con ⁇ duit 42,44 and thus provokes a change-over of the indi ⁇ cator slide 54.
  • the length of the piston pin 24 is so adapted that at the final travel of the slide 8 there will be forced out just so much fluid that a full and safe change-over of the indicator slide is performed, as the fluid by the other end of the latter escapes through the conduit 46 to the tank 50.
  • the invention will not be limited to the illustra ⁇ ted embodiment, and especially not as to the way in which the very indication of the changeover is achieved. Also, the arrangement of the working cylinder can be modified for achieving that the pressure which changes over the indicator will only appear in the very last phase of the valve change-over.
  • the indicator unit 48' is also here designed as a slide housing with an internal slide, but the means for indicating the slide position is, in a manner not de ⁇ scribed in more detail, replaced with outer, magnetical ⁇ ly operating indicator means, which can signal whether the slide 54' stands in the one or the other of its outer positions.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Details Of Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Valve Housings (AREA)
  • Tunnel Furnaces (AREA)

Abstract

L'invention concerne une vanne d'arrêt souterraine dans un système de chauffage urbain prévue pour la servocommande à partir d'une armoire située sur une passerelle par actionnement hydraulique d'un bloc à piston libre à double action (8) pouvant être déplacé par une puissance élevée équivalente à celle requise pour une inversion complète de la vanne (2). Juste avant l'inversion complète de la vanne, le flux de retour (28) au niveau de l'extrémité du retour hydraulique du piston est automatiquement dévié et forcé (au niveau de 42) dans un indicateur à distance (48), ce qui inverse un corps à coulisse situé dans ce dernier, sous l'effet d'une force élevée immédiatement à la fin de l'inversion complète de ladite vanne. Ainsi, il est possible de produire un système d'inversion et indicateur robuste et durable.
PCT/DK1994/000144 1993-04-07 1994-04-07 Systeme de vanne d'arret a servocommande WO1994023231A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB9519929A GB2292420B (en) 1993-04-07 1994-04-07 A servo operated stop valve installation
PL94310943A PL310943A1 (en) 1993-04-07 1994-04-07 Shut-off servo-valve arrangement
DE4491874T DE4491874T1 (de) 1993-04-07 1994-04-07 Servobetriebene Sperrventil-Einrichtung
AU64249/94A AU6424994A (en) 1993-04-07 1994-04-07 A servo operated stop valve installation
SE9503439A SE503992C2 (sv) 1993-04-07 1995-10-04 Servomanövrerad stoppventilanläggning
FI954760A FI954760A (fi) 1993-04-07 1995-10-06 Servotoiminen sulkuventtiliasennus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK41393A DK171282B1 (da) 1993-04-07 1993-04-07 Servoopereret stopventilinstallation
DK0413/93 1993-04-07

Publications (1)

Publication Number Publication Date
WO1994023231A1 true WO1994023231A1 (fr) 1994-10-13

Family

ID=8093240

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1994/000144 WO1994023231A1 (fr) 1993-04-07 1994-04-07 Systeme de vanne d'arret a servocommande

Country Status (9)

Country Link
CN (1) CN1120368A (fr)
AU (1) AU6424994A (fr)
DE (1) DE4491874T1 (fr)
DK (1) DK171282B1 (fr)
FI (1) FI954760A (fr)
GB (1) GB2292420B (fr)
PL (1) PL310943A1 (fr)
SE (1) SE503992C2 (fr)
WO (1) WO1994023231A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016109103A1 (de) 2016-05-18 2017-11-23 Hoerbiger Automatisierungstechnik Holding Gmbh Elektrohydraulischer Linearaktuator

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102853149B (zh) * 2012-09-20 2014-12-24 浙江中旭达自控阀门有限公司 柱塞式高压执行器
CN103791143B (zh) * 2013-11-25 2016-05-25 江苏远望仪器有限公司 设有故障反馈结构的阀门液压执行器
CN105127011B (zh) * 2014-04-11 2018-06-15 衢州市优德工业设计有限公司 一种浮选模式选择结构
US20170122454A1 (en) * 2015-11-02 2017-05-04 Pentair Flow Services Ag Electro-Hydraulic Actuator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3338140A (en) * 1965-08-16 1967-08-29 John M Sheesley Actuator
SE328779B (fr) * 1966-03-05 1970-09-21 Norbro Eng Ltd
DK156745B (da) * 1985-04-16 1989-09-25 Nordisk Marine Hydraulik Danma Hydraulisk drejeaktuator
US5117739A (en) * 1990-10-15 1992-06-02 C & C Manufacturing, Inc. Fluid driven multi-axis apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3338140A (en) * 1965-08-16 1967-08-29 John M Sheesley Actuator
SE328779B (fr) * 1966-03-05 1970-09-21 Norbro Eng Ltd
DK156745B (da) * 1985-04-16 1989-09-25 Nordisk Marine Hydraulik Danma Hydraulisk drejeaktuator
US5117739A (en) * 1990-10-15 1992-06-02 C & C Manufacturing, Inc. Fluid driven multi-axis apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016109103A1 (de) 2016-05-18 2017-11-23 Hoerbiger Automatisierungstechnik Holding Gmbh Elektrohydraulischer Linearaktuator
WO2017198625A1 (fr) 2016-05-18 2017-11-23 Hoerbiger Automatisierungstechnik Holding Gmbh Actionneur linéaire électrohydraulique
US10619653B2 (en) 2016-05-18 2020-04-14 HAWE Altenstadt Holding GmbH Electrohydraulic linear actuator

Also Published As

Publication number Publication date
DE4491874T1 (de) 1996-03-21
AU6424994A (en) 1994-10-24
GB2292420B (en) 1997-04-30
FI954760A0 (fi) 1995-10-06
GB2292420A (en) 1996-02-21
PL310943A1 (en) 1996-01-08
CN1120368A (zh) 1996-04-10
SE9503439D0 (sv) 1995-10-04
SE9503439L (sv) 1995-10-04
FI954760A (fi) 1995-10-06
GB9519929D0 (en) 1995-11-29
SE503992C2 (sv) 1996-10-14
DK171282B1 (da) 1996-08-19
DK41393A (da) 1994-10-08
DK41393D0 (da) 1993-04-07

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