WO1996032001A2 - Gate valve - Google Patents

Gate valve Download PDF

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Publication number
WO1996032001A2
WO1996032001A2 PCT/NL1996/000145 NL9600145W WO9632001A2 WO 1996032001 A2 WO1996032001 A2 WO 1996032001A2 NL 9600145 W NL9600145 W NL 9600145W WO 9632001 A2 WO9632001 A2 WO 9632001A2
Authority
WO
WIPO (PCT)
Prior art keywords
housing
seat
valve
channel
valve body
Prior art date
Application number
PCT/NL1996/000145
Other languages
French (fr)
Other versions
WO1996032001A3 (en
Inventor
Lambertus Gerardus Schutte
Original Assignee
Fabran Holding B.V.
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 Fabran Holding B.V. filed Critical Fabran Holding B.V.
Publication of WO1996032001A2 publication Critical patent/WO1996032001A2/en
Publication of WO1996032001A3 publication Critical patent/WO1996032001A3/en

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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/12—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/20—Animal feeding-stuffs from material of animal origin
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K40/00—Shaping or working-up of animal feeding-stuffs
    • A23K40/10—Shaping or working-up of animal feeding-stuffs by agglomeration; by granulation, e.g. making powders
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K50/00—Feeding-stuffs specially adapted for particular animals
    • A23K50/80—Feeding-stuffs specially adapted for particular animals for aquatic animals, e.g. fish, crustaceans or molluscs
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • F16K27/047—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with wedge-shaped obturating members
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/12—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces
    • F16K3/14—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces with special arrangements for separating the sealing faces or for pressing them together
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
    • F16K3/20—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the seats
    • F16K3/207—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the seats by means of hydraulic forces

Definitions

  • the invention relates to a valve, provided with a housing which is to be arranged for instance in a pipe and which has arranged therein a channel and a valve body which is movable between a position opening the channel and a position closing the channel, wherein in the closing position the valve body co-acts with at least one seat arranged in the housing and at least partially enclosing the channel.
  • a valve is generally known under the name slide valve.
  • Slide valves are for instance used in pipe systems in the petrochemical industry. It is of obvious importance therein that the valve operates reliably under all conditions. Since aggressive substances will often flow through the pipe in which the slide valve is arranged, particularly the valve body and the seat are often subject to corrosion.
  • valve body In respect of the necessity for regular overhaul, the valve body is arranged in the housing in easily removable manner.
  • the seat or seats with which this valve body co-acts must be machined, in particular turned or ground. This machining can take place most simply when the seats are removed from the housing.
  • the seats since during operation of the valve the seats are positioned in exactly the correct manner and must be arranged leak-proof in the housing, they are generally fixed in the housing such that they can only be released therefrom with very great effor . When such seats are for instance welded or expanded into the housing, they cannot be removed from the housing without difficulty and the housing must be removed as a whole from the pipe.
  • the invention therefore has for its object to provide a valve of the above described type which can be overhauled in simpler manner than heretofore possible. According to the invention this is achieved in that the seat is arranged in the housing by means of a clamping joint. Because the seat is clamped in the housing it can be removed therefrom relatively easily for overhauling purposes, while a good and leakage-free mounting of the seat in the housing is nevertheless ensured due to the clamping force.
  • Preferred embodiments of the valve according to the invention are described in the dependent claims.
  • fig. 1 is a sectional view of a valve according to the invention
  • fig. 2 is a partly sectional, perspective detail view showing the fixing of the seat in the valve.
  • a slide valve 1 (fig. 1) which can be arranged in a pipe (not shown) , comprises a housing 2 having fixed thereto on both sides connecting parts 3, the outer ends 31 of which can be connected to the pipe.
  • a channel 4 Arranged in the connecting parts 3 and the housing 2 is a channel 4 which is placed in register with the pipe.
  • valve body 5 which is movable in the direction of the arrow M between a position in which it leaves clear channel 4 and the shown position in which it closes the channel 4.
  • the valve body 5 co-acts with two annular seats 6 enclosing the channel 4.
  • the valve body 5 is connected to a control rod 7 which is provided on its outer end with screw thread 8 and protrudes through a cover 9 of housing 2.
  • On the screw thread part 8 of control rod 7 engages a nut 11 which is connected to a handwheel 10 and rotatably received in a standing support part 13 by means of bearings 12.
  • the annular seats 6 are arranged in housing 2 by means of a clamping connection. Arranged for this purpose in housing 2 are rings 15, each having a conical inner surface 26 (fig. 2) These clamping rings 15 are held fixedly in housing 2 by mounting rings 14 arranged therebehind.
  • the annular seats 6 each have a likewise conical peripheral surface 18 which co-acts with the conical inner surface 26 of clamping ring 15.
  • the cone form of clamping ring 15 and seat 6 are known as a so- called morse cone.
  • the valve body 5 is wedge-shaped and has sealing surfaces 17 tapering toward each other.
  • the seats 6 are likewise wedge-shaped and their mutually facing seat surfaces 16 thus also run at an angle relative to the displacement direction of the valve body 5.
  • ejection elements 20 are arranged in each mounting ring 14, which elements moreover function as clamping elements for fixedly clamping the seat rings 6 in housing 2 after overhaul.
  • the ejecting and clamping elements 20 are formed as pneumatic jacks displaceable in cylinders 19, which are arranged in mounting ring 14.
  • the jacks 20 are displaced in cylinder 19 by feeding compressed air at choice via a ring line 21 or a ring line 22 to the front or rear side of a widened part 25 of the jack 20.
  • each seat ring is provided with a number of keyhole-shaped recesses 23, while the jacks 20 each have a head 24 which fits into the recess 23.
  • the keyhole-shaped recess 23 is formed by a widened part 28, through which the head 24 of jack 20 can be placed, and a narrower part 29 which fits closely round a constriction 27 of jack 20 when the head 24 of jack 20 is situated in a cavity 30 of the recess 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • Chemical & Material Sciences (AREA)
  • Zoology (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Animal Husbandry (AREA)
  • Molecular Biology (AREA)
  • Physiology (AREA)
  • Health & Medical Sciences (AREA)
  • Biotechnology (AREA)
  • Mycology (AREA)
  • Botany (AREA)
  • Biomedical Technology (AREA)
  • Insects & Arthropods (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Birds (AREA)
  • Sliding Valves (AREA)
  • Magnetically Actuated Valves (AREA)
  • Lift Valve (AREA)

Abstract

The invention relates to a valve provided with a housing which is to be arranged in a pipe and which has arranged therein a channel and a valve body which is movable between a position opening and closing the channel. In the closing position the valve body co-acts with a seat arranged in the housing, which seat is arranged in the housing by means of a clamping connection and is thereby simple to release for maintenance purposes. The seat and the housing can herein be conical. For clamping of the seat in the housing or release thereof from the housing the valve is further provided with movable ejecting elements and clamping elements which can be formed in each case by a double-action jack.

Description

GATE VALVE
The invention relates to a valve, provided with a housing which is to be arranged for instance in a pipe and which has arranged therein a channel and a valve body which is movable between a position opening the channel and a position closing the channel, wherein in the closing position the valve body co-acts with at least one seat arranged in the housing and at least partially enclosing the channel. Such a valve is generally known under the name slide valve. Slide valves are for instance used in pipe systems in the petrochemical industry. It is of obvious importance therein that the valve operates reliably under all conditions. Since aggressive substances will often flow through the pipe in which the slide valve is arranged, particularly the valve body and the seat are often subject to corrosion. In addition, as a result of the movement of the valve body between the open and closed position of the valve, wear occurs on the valve body as well as the seat. In order to guarantee a reliable, leak-proof operation of the slide valve, this latter must be checked with some regularity and overhauled if necessary.
In respect of the necessity for regular overhaul, the valve body is arranged in the housing in easily removable manner. During an overhaul, however, not only the valve body but also the seat or seats with which this valve body co-acts must be machined, in particular turned or ground. This machining can take place most simply when the seats are removed from the housing. However, since during operation of the valve the seats are positioned in exactly the correct manner and must be arranged leak-proof in the housing, they are generally fixed in the housing such that they can only be released therefrom with very great effor . When such seats are for instance welded or expanded into the housing, they cannot be removed from the housing without difficulty and the housing must be removed as a whole from the pipe. This is a relatively arduous and time-consuming activity, which is a particular problem when the slide valve cannot be taken out of commission for a long period or when prolonged work on the valve is not possible, as will be the case for instance for valves which are used in a radio-active environment, for instance a nuclear power station. The invention therefore has for its object to provide a valve of the above described type which can be overhauled in simpler manner than heretofore possible. According to the invention this is achieved in that the seat is arranged in the housing by means of a clamping joint. Because the seat is clamped in the housing it can be removed therefrom relatively easily for overhauling purposes, while a good and leakage-free mounting of the seat in the housing is nevertheless ensured due to the clamping force. Preferred embodiments of the valve according to the invention are described in the dependent claims.
The invention will now be elucidated on the basis of an embodiment, wherein reference is made to the drawing, in which: fig. 1 is a sectional view of a valve according to the invention, and fig. 2 is a partly sectional, perspective detail view showing the fixing of the seat in the valve. A slide valve 1 (fig. 1) which can be arranged in a pipe (not shown) , comprises a housing 2 having fixed thereto on both sides connecting parts 3, the outer ends 31 of which can be connected to the pipe. Arranged in the connecting parts 3 and the housing 2 is a channel 4 which is placed in register with the pipe. Further arranged in housing 2 is a valve body 5 which is movable in the direction of the arrow M between a position in which it leaves clear channel 4 and the shown position in which it closes the channel 4. The valve body 5 co-acts with two annular seats 6 enclosing the channel 4. The valve body 5 is connected to a control rod 7 which is provided on its outer end with screw thread 8 and protrudes through a cover 9 of housing 2. On the screw thread part 8 of control rod 7 engages a nut 11 which is connected to a handwheel 10 and rotatably received in a standing support part 13 by means of bearings 12. By rotating the handwheel 10 in the direction of the arrow R the valve body 5 is thus displaced. The annular seats 6 are arranged in housing 2 by means of a clamping connection. Arranged for this purpose in housing 2 are rings 15, each having a conical inner surface 26 (fig. 2) These clamping rings 15 are held fixedly in housing 2 by mounting rings 14 arranged therebehind. The annular seats 6 each have a likewise conical peripheral surface 18 which co-acts with the conical inner surface 26 of clamping ring 15. The cone form of clamping ring 15 and seat 6 are known as a so- called morse cone. The valve body 5 is wedge-shaped and has sealing surfaces 17 tapering toward each other. The seats 6 are likewise wedge-shaped and their mutually facing seat surfaces 16 thus also run at an angle relative to the displacement direction of the valve body 5. In order to enable release of seat rings 6 from housing 2 for overhauling purposes, ejection elements 20 are arranged in each mounting ring 14, which elements moreover function as clamping elements for fixedly clamping the seat rings 6 in housing 2 after overhaul. The ejecting and clamping elements 20 are formed as pneumatic jacks displaceable in cylinders 19, which are arranged in mounting ring 14. The jacks 20 are displaced in cylinder 19 by feeding compressed air at choice via a ring line 21 or a ring line 22 to the front or rear side of a widened part 25 of the jack 20. Herein, by feeding air through lines 21, the jacks 20 in the mutually opposite mounting rings 14 are moved apart, whereby the seat rings 6 are clamped in the housing 2, while feeding compressed air through lines 22 causes the jacks 20 to move toward each other, whereby the seat rings 6 are pressed free of clamping rings 15.
In order to place seat rings 6 into engagement with jacks 20, each seat ring is provided with a number of keyhole-shaped recesses 23, while the jacks 20 each have a head 24 which fits into the recess 23. The keyhole-shaped recess 23 is formed by a widened part 28, through which the head 24 of jack 20 can be placed, and a narrower part 29 which fits closely round a constriction 27 of jack 20 when the head 24 of jack 20 is situated in a cavity 30 of the recess 23. In order to fix a seat ring 6 in housing 2 the ring 6 is now pushed in the direction of the arrow I with the recesses 23 over the heads 24 of the jacks 20 and subsequently rotated in the direction of the arrow F, whereby the heads 24 are enclosed behind the edges of the narrow parts 29. By subsequently feeding compressed air through ring line 21 the jacks 20 are moved to the right in the figure, whereby the seat ring 6 is pulled into the conical clamping ring 15. When the seat ring has to be removed from the housing, compressed air can simply be carried to the rear of the jacks 20 through the ring line 22, whereby the seat ring 6 is pressed out of the clamping ring 15 and can then be released by a slight rotation of the jacks 20. For correct positioning of the wedge-shaped seat rings 6 dowel pins (not shown) are further arranged in the housing.

Claims

Claims
1. Valve (1), provided with a housing (2) which is to be arranged for instance in a pipe and which has arranged therein a channel (4) and a valve body (5) which is movable between a position opening the channel (4) and a position closing the channel (4) , wherein in the closing position the valve body (5) co-acts with at least one seat (6) arranged in the housing (2) and at least partially enclosing the channel (6) , characterized in that the seat (6) is arranged in the housing (2) by means of a clamping connection.
2. Valve (1) as claimed in claim 1, characterized in that the seat (6) and a part of the housing (2) enclosing the seat (6) are at least partly conical.
3. Valve (1) as claimed in claim 1 or 2, characterized by at least one displaceable ejection element for placing into engagement with the seat (6) .
4. Valve (1) as claimed in any of the claims 1-3, characterized by at least one displaceable clamping element for placing into engagement with the seat (6) .
5. Valve (1) as claimed in claim 3 or 4, characterized in that the ejection element and the clamping element are formed by a double-action jack (20) .
6. Valve (1) as claimed in claim 5, characterized in that the jack (20) is a pneumatic jack.
7. Valve (1) as claimed in claim 5 or 6, characterized in that at least one keyhole-shaped opening (23) is recessed into the seat (6) and the jack (20) has a head (24) fitting into the recess (23) .
PCT/NL1996/000145 1995-04-05 1996-04-04 Gate valve WO1996032001A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1000068 1995-04-05
NL1000068A NL1000068C2 (en) 1995-04-05 1995-04-05 Stop valve.

Publications (2)

Publication Number Publication Date
WO1996032001A2 true WO1996032001A2 (en) 1996-10-10
WO1996032001A3 WO1996032001A3 (en) 1997-02-13

Family

ID=19760838

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1996/000145 WO1996032001A2 (en) 1995-04-05 1996-04-04 Gate valve

Country Status (2)

Country Link
NL (1) NL1000068C2 (en)
WO (1) WO1996032001A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2447267A (en) * 2007-03-05 2008-09-10 Ltd Dynamic Controls Fluid flow valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010344B (en) * 1953-05-21 1957-06-13 Steinmueller Gmbh L & C Exchangeable housing sealing ring in gate valves
DE1121423B (en) * 1956-09-19 1962-01-04 Albert Joseph Lefebvre Fixing device for exchangeable, tubular valve seats in shut-off devices
DE2128705A1 (en) * 1971-06-09 1972-12-21 Siebeck Metallwerke Gmbh Sealing ring attachment for slider

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010344B (en) * 1953-05-21 1957-06-13 Steinmueller Gmbh L & C Exchangeable housing sealing ring in gate valves
DE1121423B (en) * 1956-09-19 1962-01-04 Albert Joseph Lefebvre Fixing device for exchangeable, tubular valve seats in shut-off devices
DE2128705A1 (en) * 1971-06-09 1972-12-21 Siebeck Metallwerke Gmbh Sealing ring attachment for slider

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2447267A (en) * 2007-03-05 2008-09-10 Ltd Dynamic Controls Fluid flow valve

Also Published As

Publication number Publication date
NL1000068C2 (en) 1997-05-21
WO1996032001A3 (en) 1997-02-13
NL1000068A1 (en) 1996-10-08

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