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
  • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
  • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
  • F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
• • 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
  • F16K3/04—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 pivoted closure members
  • F16K3/06—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 pivoted closure members in the form of closure plates arranged between supply and discharge passages
  • F16K3/08—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 pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
  • F16K3/085—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 pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres the axis of supply passage and the axis of discharge passage being coaxial and parallel to the axis of rotation of the plates
• • 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
  • F16K49/00—Means in or on valves for heating or cooling
• • 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
  • Y10T137/598—With repair, tapping, assembly, or disassembly means
  • Y10T137/6031—Assembling or disassembling rotary valve
  • Y10T137/6035—Rotary ball valve
  • Y10T137/6038—Particular valve seat or interface seal
  • Y10T137/6041—Replaceable
• • 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
  • Y10T137/598—With repair, tapping, assembly, or disassembly means
  • Y10T137/6089—With mechanical movement between actuator and valve
  • Y10T137/6099—Gear type
• • 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
  • Y10T137/8593—Systems
  • Y10T137/87917—Flow path with serial valves and/or closures
  • Y10T137/88022—One valve head provides seat for other head
  • Y10T137/8803—Also carries head of other valve

Definitions

• This invention concerns a device associated with a valve, in particular a rotatable valve comprising an upper part and a lower part which are detachably joined to each other.
• Valves of the kind mentioned above can be made sufficiently large and robust in order to be mounted onto pipelines which transport hydrocarbons, particularly subsea pipelines, but the invention can also be exploited in other environments and in smaller dimensions.
• a ball valve which is intended for connection with a pipeline system which conveys gas and/or oil at considerable sea depths.
• the valve can be demounted in a submerged state for instance for inspection or repair. Replacement of the internal vital parts can take place without any kind of extra cover and without the fluid in the pipeline leaking out during demounting, or without water from the surrounding environment being able to penetrate into the pipeline.
• the rotatable member of the known valve comprises an upper part and a lower part.
• the upper part which can be demounted from the valve housing, comprises, amongst other parts, the main packings of the valve.
• the lower part contains two displaceable sleeves which, when the valve can be demounted from the valve housing, comprises, amongst other parts, the main packings two displaceable sleeves which, when the valve is open, are displaced outwards to engage with bearings in the valve housing thereby forming a leakproof, continuous fluid passageway.
• Apparatus of the above-mentioned kind which are placed in a fluid flow, are subjected to considerable wear and tear and demand relatively frequent, periodical maintenance. It is desirable that maintenance can be performed quickly and that it should not be necessary to depressurize the pipeline. It is also desirable that medium from the pipeline will not leak out into the surrounding environment when maintenance takes place.
• a valve according to the present invention which is characterized in that the lower part of the rotatable member is predominantly U-formed with sealing surfaces arranged on the outwardly facing side-faces, which sealing surfaces are, in the case of closed valve, engaged with the valve housing's valve seats on respectively the inlet and/or outlet end, in that the upper part's external surface is designed for totally or partly resting support against the lower part's internal surface and comprises a through-flow passage (23) intended for accommodating controlling or metering equipment, in that the upper part, in the case of closed valve, can be withdrawn from the valve housing for maintenance.
• Fig. 1 shows a vertical section through a valve according to the invention when this is in an open position or adjustable position
• Fig. 2 shows a horizontal section through the valve shown in fig. 1
• Fig. 3 shows a vertical section through the valve as -in fig. 1, but with the valve in closed position
• Fig. 4 shows a vertical section through upper part and components attached to this, after they have been lifted out of the valve chamber in connection with a maintenance operation
• Fig. 5 shows a horizontal outline of upper part and associated components which are shown in fig. 4,
• Fig. 6 shows a horizontal outline of the valve housing and lower part after the upper part has been lifted out
• Fig. 7 shows a horizontal section through the valve housing and lower part which keeps the valve closed.
• the valve comprises a valve housing 1 with a cover 2 which encompasses the upper parts of the valve.
• the cover is secured to the valve housing by means of locking segments 38.
• the valve housing comprises further an inlet flange 3 and an outlet flange 4 which connect to a not shown pipeline • in a known manner.
• a duct for the fluid flow extends through the valve.
• an internal bonnet 24 is placed between the valve housing 1 and the cover 2. •
• the rotatable component of the valve includes a U-shaped lower part 6 which by way of a journal 7 arranged on lower side is pivotally mounted in a bearing 8 arranged i lower part of the valve housing 1.
• An upper part 10 is designed to be supportably placed against the internal portion of the lower part 6.
• lower part 6 comprises a rig 5, which engages with a groove 9 (fig. 5) in upper part 10.
• Upper part 10 comprises a through-going passage 34.
• the upper part 10 is provided with sealing elements 11, 12, which in the shown embodiment are bolted to upper part 10.
• the sealing elements comprise conical sealing surfaces 13, 14 which engage with correspondingly designed valve seats
• Lower part 6 comprises correspondingly designed spherical sealing surfaces 17, 18 which with rotatable member in operating position, as most clearly shown in fig. 2, face perpendicularly in relation to upper part's sealing surfaces 13, 14.
• the rotating member's turn shaft 25 is pivotally mounted in a check bearing 23 in the internal bonnet 24.
• the valve's rotatable member can rotate from an open position as shown in fig. 1, where the upper part's sealing faces bear against the valve seats 15,
• a hydraulic actuator 21 which acts on a turn shaft 22 is arranged.
• the turn shaft 22 is rigidly connected with the rotating member's turn shaft 25.
• the upper portion of the turn shaft 22 comprises splines 25 which engage with the hydraulic actuator 21.
• Upper part 10 is designed to be able to receive various types of controlling or metering instruments.
• the object of such equipment can be:
• a controlling mechanism 26 is arranged in the fluid flow passage 34 for regulation of the fluid flow.
• the regulating device 26 comprises rotatable discs 27 which can be displaced radially in relation to each other in order to close/open the fluid flow passage 34.
• two regulating devices 26 can be used as indicated in fig. 2. Rotation of the rotatable valve discs 27 is executed by means of a worm gear
• connection motor 30 is actuated by a connection motor 30.
• the first step will be to close the valve by 90 rotation of the rotating member so that the spherical sealing surfaces 17, 18 of the lower part bear against the valve seats 15, 16 of the valve housing 1.
• the valve will now be closed at both the upstream and downstream ends.
• the next step will be to equalize the pressure in the valve room with the ambient pressure before the cover 2 of the valve housing 1 is dismantled in that the locking segments 38 are released.
• Upper part 10 and associated equipment can now be lifted out of the valve housing 1 and be inspected/repaired.
• upper part 10 and other components which are to undergo maintenance are attached to the underside of the cover 2. All components can now be lifted up to the surface via a hook 20 on the overside of the cover.
• the figures 4 and 5 show the unit which is lifted to the surface for maintenance, while the figures 6 and 7 show valve housing and lower part which remain where they are.
• the lower part 6 of the valve can preferably include an automatic locking mechanism which keeps it in a locked position when upper part 10 is lifted up (not shown) .
• the groove 9 When the upper part with equipment is mounted after overhauling, or possibly when a new corresponding unit is mounted, the groove 9 must enter above the rib 5. The unit will halt in lower position in that a bearing edge 31 on the overhauled unit encounters the support 32 of the lower part. Bearing surfaces 33 on upper part will fasten the upper part for sideways position in relation to lower part. Before the cover 2 is fastened in a known way and the valve is rotated into open position, the valve room should be flushed.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Magnetically Actuated Valves (AREA)
• Valve Housings (AREA)
• Fluid-Driven Valves (AREA)
• Compressor (AREA)
• Electrically Driven Valve-Operating Means (AREA)
• Temperature-Responsive Valves (AREA)
• Taps Or Cocks (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19891742

Family Applications (1)

Country Status (11)

Cited By (1)

Families Citing this family (7)

Citations (3)

Family Cites Families (17)

• 1989
  • 1989-02-10 NO NO890570A patent/NO166200C/no not_active IP Right Cessation
• 1990
  • 1990-02-07 EP EP90903229A patent/EP0465473B1/en not_active Expired - Lifetime
  • 1990-02-07 AT AT90903229T patent/ATE99782T1/de not_active IP Right Cessation
  • 1990-02-07 AU AU50804/90A patent/AU626131B2/en not_active Ceased
  • 1990-02-07 DK DK90903229.4T patent/DK0465473T3/da active
  • 1990-02-07 DE DE69005817T patent/DE69005817T2/de not_active Expired - Fee Related
  • 1990-02-07 US US07/743,353 patent/US5224829A/en not_active Expired - Fee Related
  • 1990-02-07 BR BR909007102A patent/BR9007102A/pt not_active IP Right Cessation
  • 1990-02-07 WO PCT/NO1990/000031 patent/WO1990009538A1/en active IP Right Grant
  • 1990-02-07 CA CA002046322A patent/CA2046322A1/en not_active Abandoned
• 1991
  • 1991-08-09 FI FI913783A patent/FI94460C/fi active

Patent Citations (3)

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