CN107476781A - All-hydraulic control storm valve - Google Patents
All-hydraulic control storm valve Download PDFInfo
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- CN107476781A CN107476781A CN201610407323.1A CN201610407323A CN107476781A CN 107476781 A CN107476781 A CN 107476781A CN 201610407323 A CN201610407323 A CN 201610407323A CN 107476781 A CN107476781 A CN 107476781A
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- 238000007789 sealing Methods 0.000 claims abstract description 183
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 139
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 235000014676 Phragmites communis Nutrition 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000003129 oil well Substances 0.000 abstract description 10
- 239000012530 fluid Substances 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 3
- 238000005303 weighing Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 19
- 239000003921 oil Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000010720 hydraulic oil Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000002153 concerted effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Actuator (AREA)
Abstract
The invention belongs to oil-gas field development field, in particular it relates to a kind of all-hydraulic control storm valve.All-hydraulic control storm valve, using tubing annulus structure, it is characterised in that：Upper valve pedestal, connecting cylinder, lower valve pedestal, lower connection valve pedestal are in turn connected to form hollow housing, center ejector sleeve structure, sealing holder structure, well are pressed balanced structure, are arranged in hollow housing, thrust piston, restoring force piston insert the corresponding chamber of upper valve pedestal, lower valve pedestal respectively, two-piston passes through bayonet connection with center ejector sleeve structure, upper valve pedestal is provided with compensator or trimmer pressure chamber, sealing holder structure is connected with lower valve body, well flattens weighing apparatus structure setting and is connected in the bottom in the side wall of sealing holder structure, sealing holder structure with sealing valve plate.Beneficial effect：The present invention can use smaller hydraulic control pressure control high pressure oil wells, and operation is more steady when closing valve, and generation fluid power impact is small, substantially increases the reliability of well head safe system.
Description
Technical field
The invention belongs to oil-gas field development field, in particular it relates to a kind of all-hydraulic control storm valve.
Background technology
Storm valve is the important component of well head safe system, its development experience about 70 years when
Between.The operation principle of common safety valve is as follows：In normal work, the control liquid on ground acts on piston rod
On, piston rod promotes driving tube, and sealing valve plate is pushed open by driving tube, keeps the pressure supply of ground control liquid,
Then sealing valve plate is normally open, and oil pipe passage connects；When be in an emergency need close oil well when, will
The control liquid release on ground, driving tube are withdrawn in the presence of restoring force, and sealing valve plate is in the presence of torsion spring
Oil flow channel is closed, reaches the effect for closing oil well.
At present, there is problems with storm valve：Present offshore oilfield part producing well is super-pressure oil well,
Well liquid pressure can reach more than 50 MPas, the design of conventional security valve in this oil well in use, due to
Control pressure needs to be more than well pressure, control pressure line pressure can be caused excessive, this can significantly affect hydraulic pressure control
The service life and use cost of system processed；The design that traditional spring mechanism provides restoring force presses feelings in high well
The restoring force of increase spring is needed under condition, this causes spring mechanism is oversized to take oil pipe space so that defeated
The decline of oily ability；Meanwhile lack buffer structure in old relief valve design, in the water of high-pressure high-flow
In use, the hard impacts and water that valve plate and seal receptacle are sealed when closing valve events can be caused in lower production system
Phenomenon is hit, serious situation may make it that sealing valve plate is crashed with oil well rig because water attack high pressure is damaged.
The content of the invention
In order to solve the problems, such as that prior art is present, the present invention provides a kind of all-hydraulic control storm valve,
Innovatively devise hydraulic-driven pipe drive mechanism, including the driving of its valve opening and pass valve driving structure, increase
Hydraulic cushion structure, devises cracking pressure balanced structure, which significantly improves the totality of storm valve
Performance so that using the control pressure that maximum pressure is 25 MPas well pressure can be controlled to be up to 70 MPas
Oil well.
To achieve the above object, the technical solution adopted in the present invention is as follows：
A kind of all-hydraulic control storm valve, using tubing annulus structure, major part includes：Upper valve base
Body, connecting cylinder, lower valve pedestal, lower connection valve pedestal, center ejector sleeve structure, sealing holder structure, sealing valve
Plate, well pressure balanced structure, thrust piston, restoring force piston；Upper valve pedestal, connecting cylinder, lower valve pedestal,
Lower connection valve pedestal is fixedly connected sequentially to form hollow housing, center ejector sleeve structure, sealing holder structure, well
Pressure balanced structure, thrust piston, restoring force piston be arranged on upper valve pedestal, connecting cylinder, lower valve pedestal, under
Connection valve pedestal is fixedly connected sequentially to be formed in hollow housing, and thrust piston, restoring force piston insert respectively
Upper valve pedestal, the thrust piston chamber of lower valve pedestal and restoring force piston chamber, thrust piston, restoring force are lived
Plug is with center ejector sleeve structure by bayonet connection, and upper valve pedestal is provided with compensator or trimmer pressure chamber, to accommodate power
For buffer head in ejector sleeve structure to form compensator or trimmer pressure, well flattens weighing apparatus structure setting in the side wall of sealing holder structure
On, the bottom for sealing holder structure is connected with sealing valve plate；Thrust piston, the lower end of restoring force piston and high pressure
Well liquid is isolated, and its action is not influenceed by well pressure；Well presses balanced structure balanced seal valve plate when driving safety valve
Two-way pressure is poor, final to reduce the power pushed open needed for sealing valve plate；Buffer head in the ejector sleeve structure of center is being pacified
The latter end of full valve closing process provides cushion effect so that and its speed uplink reduces, and due to center ejector sleeve knot
Structure is resisted against on sealing valve plate, and sealing valve plate closing velocity reduces, and is caused so as to avoid valve and close suddenly
Water hammer.
Relative to prior art, the present invention has the advantages that：Compared with existing storm valve,
Because hydraulic piston upper and lower side and well liquid completely cut off, therefore by well liquid pressure influence pressure can not used relatively low
Hydraulic control system control superelevation well pressure under the conditions of safety valve, safety valve opening and closing when, operation it is more steady
It is fixed, it can effectively avoid sealing the hard hit of valve plate and seal receptacle when closing valve, the reliable of sealing can be ensured
Property.Extend the service life of sealing valve plate and valve seat, while also can effectively avoid water hammer in oil pipe
Produce, design substantially increases the reliability of well head safe system.
Brief description of the drawings
Fig. 1 is all-hydraulic control storm valve closed mode schematic diagram；
Fig. 2 is all-hydraulic control downhole safety valve closed mode side view；
Fig. 3 is all-hydraulic control storm valve open mode schematic diagram；
Fig. 4 is all-hydraulic control storm valve locking process schematic diagram；
Fig. 5 is center ejector sleeve structure engaging schematic diagram；
Fig. 6 seals enlarged drawing of the holder structure when balanced valve is closed；
Fig. 7 is sealing valve shaft mapping；
Fig. 8 is locked out tool construction schematic diagram；
Fig. 9 is lower valve body restoring force plunger shaft sealed structure chart；
Figure 10 is balanced valve assembling schematic diagram；
Figure 11 seals enlarged drawing of the holder structure when balanced valve is opened；
In figure：1. connecting cylinder, 2. restoring force pistons, 201. the first sealing rings of restoring force piston, 202. reply
Power piston runner, 203. restoring force piston the second sealing ring groups, 3. upper valve pedestals, 301. restoring force cylinder hydraulic pressure
Connection hole, 302. upper valve body restoring force piston chamber, 303. thrust cylinder underground connecting holes, 304.
Upper valve body thrust piston chamber, 4. thrust pistons, 401. thrust piston runners, 402. thrust pistons first are close
Seal, 403. the second sealing rings of thrust piston, the sealing ring of 404. thrust piston the 3rd, 5. center ejector sleeve structures,
501. buffer heads, balance pipe on 502., 503. times balance pipes, 504. lock holes, 6. lower valve pedestals, 601.
Lower valve body restoring force piston chamber, 602. lower valve body thrust piston chambers, 7. sealing-plugs, 701. sealing-plugs are close
Seal, 8. sealing holder structures, 801. balance valve sealing surfaces, 802. ball sealing surfaces, 9. balanced valves, 901. is flat
Weigh valve runner, 10. times connection valve pedestals, 11. reply reeds, 1101. rivets, 12. sealing valve plates, and 1201.
Valve plate ball sealing surface, 1202. valve plate upper surfaces, 13. thrust block seats, 1301. cut pin, 14. first sealings
Circle group, 15. second sealing ring groups, 16. the 3rd sealing ring groups, 17. seal receptacle sealing rings, 18. rotating shafts, 19.
Torsion spring, 20. lower valve body restoring force piston packing groups, 21. locking tools.
Embodiment
As Figure 1-4, self-balancing storm valve, using cylindricality annulus structure, including：Upper valve pedestal
(3), connecting cylinder (1), lower valve pedestal (6), lower connection valve pedestal (10), center ejector sleeve structure (5),
Seal holder structure (8).
Upper valve pedestal (3) is variable cross-section cylindrical shell, and epimere external diameter is small, hypomere external diameter is big, epimere, under
Section rank knot position forms a step surface, and epimere inwall is sealing threaded collar joint structure, for the screw thread with oil pipe
Connection, sealing, the housing wall of hypomere is interior to be provided with upper valve body restoring force piston chamber (302), upper valve thrust body
Piston chamber (304), it is provided with step surface and is returned with what upper valve body restoring force piston chamber (302) penetrated
Multiple power cylinder underground connecting hole (301), the thrust cylinder with upper valve body thrust piston chamber (304) insertion
Underground connecting hole (303), restoring force cylinder underground pass through restoring force cylinder underground connecting hole (301)
Connected with upper valve body restoring force piston chamber (302), thrust cylinder underground passes through thrust cylinder underground
Connecting hole (303) connects with upper valve body thrust piston chamber (304)；Upper valve body restoring force piston chamber (302)
It is interior to be provided with restoring force piston (2), thrust piston (4) is provided with upper valve body thrust piston chamber (304),
Two-piston inserts from the lower end of piston chamber；The bottom of upper valve pedestal (3) is machined with two chambers conduct
Cushion chamber, to accommodate buffer head (501), when closing valve, buffer head (501) enters cushion chamber, buffering
Liquid forms high pressure and acted on buffer head in chamber so that the center ejector sleeve structure (5) being connected with buffer head
Speed uplink slows down；The bottom outer wall of upper valve pedestal (3) have one section by finishing footpath contracting section for
The first sealing ring group (14) fitting being arranged in connecting cylinder (1), reaches sealing well inner high voltage fluid
Purpose, the linkage section of connection screw thread is machined with above footpath contracting section, for upper valve pedestal (3) and connecting cylinder
(1) connection, contracting section in footpath is with being connected the step of intersegmental formation as connecting cylinder (1) and upper valve pedestal (3)
The stop end of threaded connection.
Connecting cylinder (1) is cylindrical structure, and upper and lower ends inwall processing has threaded connection section, the screw thread of epimere
Linkage section and the connection screw thread of upper valve pedestal (3) bottom screw, connection upper valve pedestal (3) and connecting cylinder (1),
The threaded connection section of hypomere and the connection screw thread on lower valve pedestal (6) top screw, connection lower valve pedestal (6)
With connecting cylinder (1), two sections threaded connection the intersegmental pressure-bearing sections for connecting cylinder (1), the internal diameter of pressure-bearing section and
The footpath contracting section internal diameter of upper valve pedestal (3) bottom is identical, and seal groove group, upper end are machined with pressure-bearing section both ends
Seal groove be assembled with the first sealing ring group (14), the first sealing ring group (14) and upper valve pedestal (3) bottom
The finishing footpath contracting section fitting in portion reaches sealing function, and the seal groove of lower end is assembled with the second sealing ring group
(15), the second sealing ring group (15) is bonded with the finishing footpath contracting section on lower valve pedestal (6) top reaches close
Function is sealed, two sections of threaded connection sections of connecting cylinder (1) and the step of the intersegmental formation of pressure-bearing are connecting cylinder (1)
The stop end being threadedly coupled with upper valve pedestal (3) and the stop end being threadedly coupled with lower valve pedestal (6).
Lower valve pedestal (6) is variable cross-section cylindrical shell, and epimere external diameter is big, and hypomere external diameter is small, and epimere has one
Footpath contracting section of the section by finishing is used to paste with the second sealing ring group (15) being arranged in connecting cylinder (1)
Close, reach the purpose of sealing well inner high voltage fluid, be the linkage section for being machined with connection screw thread below footpath contracting section,
For the connection of lower valve pedestal (6) and connecting cylinder (1), contracting section in footpath is with being connected the step of intersegmental formation as company
The stop end that connect cylinder (1) is threadedly coupled with lower valve pedestal (6), lower valve pedestal (6) hypomere are machined with company
The linkage section for connecing screw thread is used for lower valve pedestal (6) and the connection of lower connection valve pedestal (10), connects in hypomere
Connecing the bottom of section has one section of minor axis contracting section by finishing to be used for being arranged in lower connection valve pedestal (10)
The 3rd sealing ring group (16) fitting, reach sealing well inner high voltage fluid purpose, lower valve pedestal (6)
Bottom have a major diameter contracting section, this section of footpath Suo Duan tops are machined with connection screw thread, for sealing holder structure (8)
Connection, the finishing of thread segment section below are close for the seal receptacle with being arranged in sealing holder structure (8)
Seal (17) is bonded, and plays a part of sealing high pressure in closing well；In the housing wall of lower valve pedestal (6)
It is disposed with lower valve body thrust piston chamber (602) and lower valve body restoring force piston chamber (601)；Lower valve body
Thrust piston chamber (602) is non-through structure, and opening is positioned at the upper surface of lower valve pedestal (6), thrust
Piston (4) loads lower valve body thrust piston chamber (602) from the upper surface of lower valve pedestal (6), during installation
Exclude chamber indoor gas so that chamber is near vacuum；Lower valve body restoring force piston chamber (601) is to pass through
Structure is worn, and is shoulder hole structure, chamber top is the less perforate of diameter, diameter and upper valve body restoring force
Piston chamber (302) is identical, and bottom is the perforate being relatively large in diameter, and diameter is big with restoring force piston (2)
Hold identical, seal groove is machined with small perforate, to install lower valve body restoring force piston packing group (20),
Lower valve body restoring force piston packing group (20) is bonded formation sealing with restoring force piston (2), larger
Perforate bottom is machined with connection screw thread, for the threaded engagement on sealing-plug (7)；Sealing-plug (7) is
Counterbore bolt structure, its hypomere outer wall are machined with connection screw thread, for lower valve body restoring force piston chamber
(601) lower end is threadedly coupled, and sealing-plug (7) epimere is machined with seal groove group, close for installing sealing-plug
Seal (701), sealing-plug sealing (701) be bonded with lower valve body restoring force piston chamber (601) inwall with
Seal the chamber；Restoring force piston (2) inserts from the bottom of Fu Li piston chamber (601) when mounted,
From top, less perforate passes, and excludes restoring force piston the second sealing ring group (203) and returned with lower valve body
Chamber indoor gas between multiple power piston packing group (20) so that chamber is near vacuum.
Seal holder structure (8) be cylindrical tube structure, its upper inside wall is machined with connection screw thread, for
The footpath contracting section connection of lower valve pedestal (6) bottom；Threaded connection pars infrasegmentalis is machined with seal groove, for installing
Seal receptacle sealing ring (17), seal receptacle sealing ring (17) and the finishing footpath of lower valve pedestal (6) bottom are contracted
Section is bonded to reach sealing function；The bottom of sealing holder structure (8) inwall is machined with ball face sealing face, uses
It is bonded in the ball face sealing face with sealing valve plate (12), sealing effectiveness is reached when safety valve is closed, is isolated
Liquid above and below safety valve；Sealing holder structure (8) bottom have hangers be used for install connection seal valve plate (12)
Rotating shaft (18), rotating shaft (18) through sealing holder structure (8) bottom hangers on axis hole and sealing valve plate
(12) axis hole on make it that the two is hinged, while rotating shaft (18) is also fed through torsion spring (19),
Torsion spring (19) provides the moment of torsion that sealing valve plate (12) is returned to closed position；Seal holder structure (8)
Outer wall on be machined with a plane, two rivet holes are arranged at plane top, and planar lower is machined with installation balance
The through hole of valve (9), it is close with the taper of balanced valve (9) that through hole outer end has conical seal (contact) face (801) to be used for
Front cover fitting reaches sealing effectiveness；Reply reed (11) and sealing holder structure is fixed on by rivet (1101)
(8) in plane, bottom and the balanced valve (9) of reed (11) weld together, and reed (11) carries
The restoring force of closed position is returned to for balanced valve (9)；Balanced valve (9) is cylinder plug structure, and its one end adds
Work has conical seal (contact) face, while balanced valve runner (901) is machined with inside it, in balanced valve (9)
Through-flow liquid during opening；Sealing valve plate (12) is designed as curved surface valve plate, and its sealing means is ball face sealing,
It seals sphere (1201) and reaches sealing effectiveness with sealing the sealing sphere of holder structure (8) bottom and being bonded；
A part is pruned to reduce valve plate weight in the upper surface of sealing valve plate (12), is sealed when mitigating closed safe valve
Percussion of the valve plate (12) to sealing holder structure (8)；Connection suspension is machined with sealing valve plate (12)
Ear, make it be hinged with sealing holder structure (8).
Such as Fig. 3, when sealing valve plate (12) is opened, valve plate upper surface (1202) and center ejector sleeve structure (5)
Wall contacts, such as Fig. 1, when sealing valve plate (12) is closed, it seals sphere (1201) and seal receptacle
The sealing sphere of structure (8) bottom is bonded to form sealing.
Lower connection valve pedestal (10) is variable cross-section cylindrical shell, and it is divided into two sections, epimere external diameter is big,
Hypomere external diameter is small, and epimere, hypomere rank knot position form a step surface, and hypomere inwall is sealing threaded collar joint knot
Structure, for the threaded connection with oil pipe, sealing, lower connection valve pedestal (10) top inwall is provided with interior spiral shell
Line, the screw thread and the threaded engagement of lower valve pedestal (6) bottom play connection function, the bottom of thread segment
Be machined with minor axis contracting section seal groove group be used for install the 3rd sealing ring group (16), the 3rd sealing ring group (16)
It is bonded with the finishing footpath contracting section of lower valve pedestal (6) bottom and reaches sealing function；Lower connection valve pedestal (10)
There is a footpath contracting section in the middle part of inwall, this section of inwall is along the circumferential direction equidistantly provided with four pin-and-holes；Thrust block seat
(13) external diameter is identical with footpath contracting section internal diameter, but length is less than footpath contracting segment length, and by cutting pin
(1301) insertion pin-and-hole is connected with lower connection valve pedestal (10)；Thrust block seat (13) is divided into two sections,
The big hypomere internal diameter of epimere internal diameter is small, and two sections of intersections form a step surface, and the step surface is that safety valve is normally beaten
The stop surface of center ejector sleeve structure (5) when opening；The connection valve pedestal (10) under thrust block seat (13) lower section
Inwall on still have one section of footpath contracting section, the step that the footpath contracting section above this section of footpath contracting Duan Yuqi is formed is safety valve
The stop surface of thrust block seat (13) during normally opened locking.
Thrust piston (4) is rod-like structure, is machined with sealing on the piston wall of upper surface at an upper portion thereof
Groove is used for the sealing ring of installed thrust piston first (402), the sealing ring of thrust piston first (402) and upper valve
The inwall of thrust body piston chamber (304) is bonded to form sealing；In the sealing ring of thrust piston first (402)
Lower section be machined with seal groove and be used for the sealing ring of installed thrust piston second (403), thrust piston second seals
Circle (403) is bonded to form sealing with the inwall of upper valve body thrust piston chamber (304)；Thrust piston (4)
Middle part have annular projection be used for engage with the groove in center ejector sleeve structure (5), centered on ejector sleeve structure
(5) motive force of valve opening is provided；In the bottom of thrust piston (4) on the position of bottom, piston wall
It is machined with seal groove and is used for the sealing ring (404) of installed thrust piston the 3rd, thrust piston the 3rd seals (404)
Circle is bonded to form sealing with the inwall of lower valve body thrust piston chamber (602)；Thrust piston (4) is along center
Axis is machined with thrust piston runner (401), and piston runner (401) is the pore of one end open, pore
Lower openings are located at the bottom face of thrust piston (4), and the top of pore reaches the sealing ring of thrust piston first
(402) between the sealing ring of thrust piston second (403), side opening now runs through thrust piston (4)
Outer wall and pore UNICOM.
Hydraulic oil during normal work in upper valve body thrust piston chamber (304) acts on thrust piston (4)
Upper surface, the ring that thrust is engaged by thrust piston (4) middle part with the groove in center ejector sleeve structure (5)
Thrust is passed to center ejector sleeve structure (5) by shape projection；When the sealing ring (404) of thrust piston the 3rd fails
When, high pressure well liquid acts on thrust piston (4) lower surface into lower valve body thrust piston chamber (602),
Now because well liquid pressure is far above hydraulic oil control pressure, make a concerted effort on thrust piston (4) to be upward
Restoring force so that center ejector sleeve structure (5) is above carried, and safety valve is closed；When the sealing ring of thrust piston second
During failure, high pressure well liquid enters the sealing ring of thrust piston second (403) and the sealing ring of thrust piston first (402)
Between annular space and lower valve body thrust piston chamber (602) is entered by thrust piston runner (401), act on
In thrust piston (4) lower surface so that center ejector sleeve structure (5) is above carried, and safety valve is closed.
Restoring force piston (2) is rod-like structure, and restoring force piston runner (202) is machined with along central axis,
Restoring force piston flow (202) runs through restoring force piston (2) upper and lower ends face；On restoring force piston (2)
Section diameter is smaller, and identical with the diameter of upper valve body restoring force piston chamber (302), hypomere is relatively large in diameter,
It is identical with lower valve body restoring force piston chamber (601)；On restoring force piston (2) top close to upper surface
Seal groove is machined with piston wall to be used to the sealing ring of restoring force piston first (201), the first sealing ring are installed
(201) it is bonded to form sealing with the inwall of upper valve body restoring force piston chamber (302)；In restoring force piston
(2) it is close for installing restoring force piston second to be machined with seal groove group on the piston wall of lower surface for bottom
Seal group (203), restoring force piston the second sealing ring group (203) and lower valve body restoring force piston chamber (601)
Inwall is bonded to form sealing；Restoring force piston (2) stage casing external process has annular slot, is used for and center
Flange engaging in ejector sleeve structure (5), to transmit restoring force.
Hydraulic oil during normal work in upper valve body restoring force piston chamber (302) acts on restoring force piston
(2) upper surface, and lower valve body restoring force piston chamber (601) is flowed into by restoring force piston runner (202)
Restoring force piston (2) lower surface is acted on, because the lower surface area of restoring force piston (2) is more than upper end
Face area, the restoring force for making a concerted effort above to carry on restoring force piston (2), the restoring force with center by pushing away
The annular slot of the flange engaging of tubular construction (5) is supplied to center ejector sleeve structure (5).
Center ejector sleeve structure (5) main body is cylindrical structure, the internal diameter phase of epimere external diameter and upper valve pedestal (3)
Together, hypomere external diameter is identical with the internal diameter of lower lower valve pedestal (6), has outside center ejector sleeve structure (5) stage casing
One boss, boss both sides are machined with flange and groove, flange and the groove on restoring force piston (2) respectively
Engaging, groove engage with the flange on thrust piston (4)；A pair of buffer heads (501) are welded with boss,
The axis of buffer head (501) is located at vertical and by center ejector sleeve structure (5) central axis with boss side surfaces
Plane in, the cushion chamber of buffer head (501) and upper valve pedestal (3) coordinates, in closed safe valve mistake
Ejector sleeve structure (5) provides cushion effect centered on pressure liquid in journey；The bottom of center ejector sleeve structure (5) adds
Work has a wedge-shaped notch, and in valve opening, the notch is bonded with the inclined-plane on balanced valve (9), to release balance
Valve (9)；Balance pipe (502), lower balance pipe (503) are also machined with center ejector sleeve structure (5),
So that fluid communication in the aerial liquid and well of balanced valve inner loop, centre of equilibrium ejector sleeve structure (5) it is interior
Outer pressure at both sides；Center ejector sleeve structure (5) hypomere is machined with lock hole (504), the balanced valve in locking
(9) hole is entered.
Locking tool (21) hypomere is the seeker of the conical surface, and stage casing is cylindrical structure, its diameter and upper valve base
The internal diameter of body (3) is identical, and stage casing and hypomere junction are a circular table, should in locked secure valve
Table top top to center ejector sleeve structure (5) upper surface, locking tool (21) epimere are connected for one with linkage section
The conical surface, linkage section be used for be connected with workover tool.
Above-mentioned all-hydraulic control storm valve operating method is as follows：
[1], safety valve is lowered into underground together with oil pipe, before start-up operation, in restoring force cylinder underground
Hydraulic oil pressurize first, pressure is put on due to restoring force piston (2) upper and lower end face, due to restoring force
Piston (2) upper end area is less than lower end, therefore the restoring force for making a concerted effort above to carry formed, restoring force piston
(2) promote center ejector sleeve structure (5) up, sealing valve plate (12) is replied in the case where being acted in torsion spring
To closed state, safety valve is closed.
[2], hydraulic oil during normal work in restoring force cylinder underground and thrust cylinder underground pressurizes,
Thrust cylinder hydraulic line pressure is higher than thrust cylinder hydraulic line pressure, ejector sleeve knot centered on thrust piston (4)
Structure (5) provides downward thrust, and restoring force piston (2) provides upward restoring force for heart ejector sleeve structure,
Now act in center ejector sleeve structure (5) to make a concerted effort be downward thrust, under center ejector sleeve structure (5)
OK, start to be pushed outwardly balance when the wedge-shaped notch of center ejector sleeve structure bottom contacts with balanced valve (9)
Valve (9), balanced when the lower surface top of center ejector sleeve structure (5) is to the upper surface for sealing valve plate (12)
Valve (9) is in completely out position, and due to now sealing valve plate (12), pressure difference is very big up and down, and center pushes away
Tubular construction (5) can not push sealing valve plate open, and balanced valve (9) is in open mode, pressure balance at this moment
Process starts, and valve plate (12) is sealed after a period of time, and pressure difference reduces up and down, and center ejector sleeve structure (5) pushes away
Sealing valve plate (12) and descending is opened, until its bottom contact thrust block seat (13), valve opening action is completed, this
When keep before hydraulic line pressure, safety valve i.e. be in open mode, oil well can be produced normally.
[3], when being in an emergency or during maintenance needs closing well, first by the liquid of thrust cylinder underground
Off-load is pressed oil, restoring force cylinder underground keeps pressure, does so the pressure on thrust piston (4)
Disappear, under the restoring force effect of restoring force piston (2), center ejector sleeve structure (5) is up, at center
When ejector sleeve structure (5) lower end is up to close to sealing holder structure (8), the buffer head (501) on its stage casing table top
Into the cushion chamber of upper valve pedestal (3), center ejector sleeve structure (5) speed uplink starts to reduce, sealing valve
Plate (12) torsion spring (19) effect under to closed position reply, now with center ejector sleeve form touch
(5), and with center ejector sleeve structure (5) it is slow it is up be returned to closed position, now seal valve plate
(12) sealing surface is bonded with sealing holder structure (8) sealing surface, completes sealing, center ejector sleeve structure (5)
Continue under restoring force effect up until reaching balanced valve (9) top, now center ejector sleeve structure is slow
At the top of drift (501) upper surface contact cushion chamber, balanced valve (9) is in the presence of reed (11) is replied
Retract, whole valve process of closing is completed.
[4], the automatic closing of seal failure：When the sealing ring (404) of thrust piston the 3rd fails, high pressure
Well liquid enters lower valve body thrust piston chamber (602), acts on thrust piston (4) lower surface, now by
It is far above hydraulic oil control pressure in well liquid pressure, making a concerted effort on thrust piston (4) is upward restoring force,
So that center ejector sleeve structure (5) above carries, safety valve is closed；When the sealing ring of thrust piston second (403) loses
During effect, high pressure well liquid enters the sealing ring of thrust piston second (403) and the sealing ring of thrust piston first (402)
Between annular space and acted on by thrust piston runner (401) into lower valve body thrust piston chamber (602)
Thrust piston (4) lower surface so that center ejector sleeve structure (5) is above carried, and safety valve is closed.
[5], storm valve is forever opened：When safety valve is closed because of system decompression, to keep oil well
Normal circulation, need tripping in locking tool (21) to open safety valve by force, before tripping in locking tool first will
The hydraulic oil off-load of thrust cylinder underground and restoring force cylinder underground, after tripping in locking tool, lock work
The upper surface of the circular table contact center ejector sleeve structure (5) of tool, is now applied to locking tool (21)
Plus-pressure, locking tool (21) promote center ejector sleeve structure (5) descending, and sealing valve plate (12) is opened on top
And continue traveling downwardly, when center ejector sleeve structure (5) is against upper thrust block seat (13), fixed thrust block seat (13)
Cutting pin (1301) cut, thrust block seat (13) and center ejector sleeve (5) is descending together finally supports
On the step surface for leaning against lower connection valve base vivo wall, now balanced valve (9) insertion lock hole (504) is completed
Locking, locking tool (21) propose oil well.
Claims (9)
- A kind of 1. all-hydraulic control storm valve, using tubing annulus structure, it is characterised in that：Upper valve Pedestal (3), connecting cylinder (1), lower valve pedestal (6), lower connection valve pedestal (10) are fixedly connected sequentially shape Into hollow housing, center ejector sleeve structure (5), sealing holder structure (8), balanced valve (9), thrust piston (4), restoring force piston (2) is set in the housing, and thrust piston (4), restoring force piston (2) are respectively Insert upper valve pedestal (3), the thrust piston chamber (304) of lower valve pedestal (6) and restoring force piston chamber (302), thrust piston (4), restoring force piston (2) and center ejector sleeve structure (5) be by bayonet connection, Upper valve pedestal (3) is provided with compensator or trimmer pressure chamber, to accommodate the buffer head (501) in power ejector sleeve structure To form compensator or trimmer pressure, balanced valve (9) is arranged in the side wall of sealing holder structure (8), seals holder structure (8) bottom is connected with sealing valve plate (12).
- 2. all-hydraulic control storm valve according to claim 1, it is characterised in that upper valve base Body (3) is variable cross-section cylindrical shell, and epimere external diameter is small, hypomere external diameter is big, epimere, hypomere rank knot position A step surface is formed, epimere inwall is sealing threaded collar joint structure, for the threaded connection with oil pipe, is sealed, Upper valve body restoring force piston chamber (302), upper valve body thrust piston chamber are provided with the housing wall of hypomere (304), on step surface be provided with respectively with upper valve body restoring force piston chamber (302) and upper valve thrust body The underground connecting hole of piston chamber (304) insertion, the underground and control for controlling restoring force cylinder push away The underground of power cylinder passes through connecting hole and corresponding chamber UNICOM respectively；Restoring force piston (2) and thrust are lived Respective chamber is inserted on plug (4) top respectively；The bottom of upper valve pedestal (3) is machined with two chambers as slow Chamber is rushed, to accommodate buffer head (501)；The bottom outer wall of upper valve pedestal (3) has one section by finishing Footpath contracting section be used for be bonded with the first sealing ring group (14) formation seal；It is the company of being machined with above footpath contracting section The linkage section of screw thread is connect, for the connection (1) of upper valve pedestal (3) and connecting cylinder, footpath contracting section and linkage section Between the step that is formed be stop end that connecting cylinder (1) is threadedly coupled with upper valve pedestal (3).
- 3. all-hydraulic control storm valve according to claim 1, it is characterised in that connecting cylinder (1) be cylindrical structure, upper and lower ends inwall processing has threaded connection section, respectively with upper valve pedestal (3), Lower valve pedestal (6) connects, two sections of intersegmental pressure-bearing sections for connecting cylinder (1) of threaded connection, pressure-bearing section and two Section threaded connection two stop surfaces of intersegmental formation, the internal diameter of pressure-bearing section contract with the footpath of upper valve pedestal (3) bottom Section internal diameter is identical, and seal groove group is machined with pressure-bearing section both ends and installs the first sealing ring group (14) and the respectively Two sealing ring groups (15), the first sealing ring group (14) and the second sealing ring group (15) are respectively in upper valve base Between body (3) and connecting cylinder (1), sealing is formed between lower valve pedestal (6) and connecting cylinder (1).
- 4. all-hydraulic control storm valve according to claim 1, it is characterised in that lower valve base Body (6) is variable cross-section cylindrical shell, and epimere external diameter is big, and hypomere external diameter is small, and epimere has one section to pass through finishing The footpath contracting section of work is used to be bonded formation sealing with the second sealing ring group (15), is to be machined with below footpath contracting section The linkage section of connection screw thread, for the connection with connecting cylinder (1), footpath contracting section and the platform for being connected intersegmental formation Rank is the stop end that connecting cylinder (1) is threadedly coupled with lower valve pedestal (6), and lower valve pedestal (6) hypomere adds The linkage section that work has connection screw thread is used for the connection with lower connection valve pedestal (10), under hypomere linkage section Portion has one section of minor axis contracting section by finishing to be used to be bonded formation sealing with the 3rd sealing ring group (16), under One major diameter contracting section is arranged at the bottom of valve body (6), and this section of footpath Suo Duan tops are machined with connection screw thread, for Seal holder structure (8) connection, thread segment section below finishing, for seal receptacle sealing ring (17) Fitting forms sealing；Lower valve body thrust piston chamber (602) is disposed with the housing wall of lower valve pedestal (6) With lower valve body restoring force piston chamber (601)；Lower valve body thrust piston chamber (602) is non-through structure, Opening is positioned at the upper surface of lower valve pedestal (6), and thrust piston (4) is from the upper surface of lower valve pedestal (6) Load lower valve body thrust piston chamber (602), chamber indoor gas is excluded during installation so that chamber is approximate true It is empty；Lower valve body restoring force piston chamber is through structure (601), and is shoulder hole structure, chamber top is The less perforate of diameter, diameter is identical with upper valve body restoring force piston chamber (302), and bottom is to be relatively large in diameter Perforate, diameter is identical with the end greatly of restoring force piston (2), and seal groove is machined with small perforate, to Install lower valve body restoring force piston packing group (20), lower valve body restoring force piston packing group (20) with Restoring force piston (2) fitting forms sealing, and larger perforate bottom is machined with connection screw thread, for it is close Blocking connects (7)；Sealing-plug (7) is counterbore bolt structure, and its hypomere outer wall is machined with connection screw thread, its Epimere is machined with seal groove group, for installing sealing plug sealing ring (701), sealing plug sealing ring (701) It is bonded to form sealing with lower valve body restoring force piston chamber (601) inwall；Restoring force piston (2) is being installed The bottom insertion of Shi Congfu power piston chamber (601), from top, less perforate passes, and excludes restoring force and lives Fill in the chamber Indoor Air between the second sealing ring group (203) and lower valve body restoring force piston packing group (20) Body make it that chamber is near vacuum.
- 5. all-hydraulic control storm valve according to claim 1, it is characterised in that seal receptacle Structure (8) is cylindrical tube structure, and its upper inside wall is machined with connection screw thread, for lower valve pedestal (6) Connection；Threaded connection pars infrasegmentalis is machined with seal groove, for installing seal receptacle sealing ring (17), seal receptacle Sealing ring (17) is bonded to form sealing with the finishing footpath contracting section of lower valve pedestal (6) bottom；Seal receptacle knot The bottom of structure (8) inwall is machined with ball face sealing face, for the ball face sealing face with sealing valve plate (12) Fitting；Sealing holder structure (8) bottom have hangers be used for install connection seal valve plate (12) rotating shaft (18), It is hinged by rotating shaft (18) and sealing valve plate (12), while rotating shaft (18) is also fed through moment of torsion bullet Spring (19), torsion spring (19) provide the moment of torsion that sealing valve plate (12) is returned to closed position；Sealing Valve plate (12) is curved surface valve plate, and its sealing means is ball face sealing, and the upper surface of sealing valve plate (12) is cut A part is gone to be machined with connection hangers in its side to reduce valve plate weight；Seal the outer of holder structure (8) A plane is machined with wall, two rivet holes are arranged at plane top, and planar lower is machined with installation balanced valve (9) Through hole, there is on through hole conical seal (contact) face (801) to be used to be bonded with the conical seal (contact) face of balanced valve (9) to reach To sealing effectiveness；Reply reed (11) and the flat of sealing holder structure (8) is fixed on by rivet (1101) On face, bottom and the balanced valve (9) of reed (11) weld together, and reed (11) provides balanced valve (9) restoring force；Balanced valve (9) is cylinder plug structure, and its one end is machined with conical seal (contact) face, simultaneously Balanced valve runner (901) is machined with inside it.
- 6. all-hydraulic control storm valve according to claim 1, it is characterised in that lower to connect Valve body (10) is variable cross-section cylindrical shell, is divided into two sections outside it, epimere external diameter is big, outside hypomere Footpath is small, and epimere, hypomere rank knot position form a step surface, and hypomere inwall is sealing threaded collar joint structure, is used In the threaded connection with oil pipe, sealing, lower connection valve pedestal (10) top inwall is used for provided with internal thread Lower valve pedestal (6) is connected, seal groove group is machined with the minor axis contracting section of the bottom of thread segment for installing the 3rd Sealing ring group (16), the 3rd sealing ring group (16) and the finishing footpath contracting section of lower valve pedestal (6) bottom are pasted Close and form sealing；There is a footpath contracting section in the middle part of lower connection valve pedestal (10) inwall, this section of inwall circumferentially side To being equidistantly provided with four pin-and-holes；The external diameter of thrust block seat (13) is identical with footpath contracting section internal diameter, but length is less than Footpath contracting segment length, and be connected by cutting pin (1301) insertion pin-and-hole with lower connection valve pedestal (10)； Thrust block seat (13) is divided into two sections, and the big hypomere internal diameter of epimere internal diameter is small, and two sections of intersections form a step Face, the step surface are the stop surface of center ejector sleeve structure (5) when safety valve is normally opened；In thrust block seat (13) Connection valve pedestal (10) inwall still has one section of footpath contracting section under lower section, the footpath contracting section above this section of footpath contracting Duan Yuqi The stop surface of thrust block seat (13) when the step of formation is safety valve normally opened locking.
- 7. all-hydraulic control storm valve according to claim 1, it is characterised in that thrust is lived It is rod-like structure to fill in (4), and being machined with seal groove close to upper end surface at an upper portion thereof is used for installed thrust piston First sealing ring (402), the sealing ring of thrust piston first (402) and upper valve body thrust piston chamber (304) Inwall be bonded to form sealing；Seal groove use is machined with below the sealing ring of thrust piston first (402) In the sealing ring of installed thrust piston second (403), the sealing ring of thrust piston second (403) pushes away with upper valve body The inwall of power piston chamber (304) is bonded to form sealing；Thrust piston has annular projection use in the middle part of (4) Engage in the groove in center ejector sleeve structure (5)；In the bottom of thrust piston (4) close to the position of bottom Put, be machined with seal groove and be used for the sealing ring (404) of installed thrust piston the 3rd, the sealing ring of thrust piston the 3rd (404) it is bonded to form sealing with the inwall of lower valve body thrust piston chamber (602)；Thrust piston (4) Thrust piston runner (401) is machined with along central axis, piston runner (401) is the pore of one end open, Pore lower openings are located at the bottom face of thrust piston (4), and it is close that the top of pore reaches thrust piston first Between seal (402) and the sealing ring of thrust piston second (403), now there is side opening to run through thrust piston (4) Outer wall and pore UNICOM.
- 8. all-hydraulic control storm valve according to claim 1, it is characterised in that restoring force Piston (2) is rod-like structure, is machined with restoring force piston runner (202) along central axis, the runner passes through Wear restoring force piston (2) upper and lower ends face；Restoring force piston (2) epimere diameter is smaller, is returned with upper valve body The diameter of Fu Li piston chamber (302) is identical, and hypomere is relatively large in diameter, with lower valve body restoring force piston chamber (601) it is identical；Seal groove use is machined with piston wall of restoring force piston (2) top close to upper surface In the installation sealing ring of restoring force piston first (201), the first sealing ring (201) is lived with upper valve body restoring force The inwall of plug chamber (302) is bonded to form sealing；Work in restoring force piston (2) bottom close to lower surface Seal groove group is machined with plug wall to be used to restoring force piston the second sealing ring group (203), restoring force piston are installed Second sealing ring group (203) is bonded to form sealing with lower valve body restoring force piston chamber (601) inwall；Return Multiple power piston (2) stage casing external process has annular slot, for the flange in center ejector sleeve structure (5) Engaging.
- 9. all-hydraulic control storm valve according to claim 1, it is characterised in that center pushes away Tubular construction (5) main body is cylindrical structure, and epimere external diameter is identical with the internal diameter of upper valve pedestal (3), outside hypomere Footpath is identical with the internal diameter of lower lower valve pedestal (6), there is a boss, boss two outside the ejector sleeve structure stage casing of center Side is machined with flange and groove respectively, and flange engages with the groove on restoring force piston (2), and groove is with pushing away Flange engaging on power piston (4)；A pair of buffer heads (501) are welded with boss；Center ejector sleeve structure (5) bottom is machined with a wedge-shaped notch, and in valve opening, the notch is bonded with the inclined-plane on balanced valve (9)； Balance pipe (502), lower balance pipe (503) are also machined with center ejector sleeve structure (5)；Center ejector sleeve Structure (5) hypomere is machined with lock hole (504).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610407323.1A CN107476781A (en) | 2016-06-07 | 2016-06-07 | All-hydraulic control storm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610407323.1A CN107476781A (en) | 2016-06-07 | 2016-06-07 | All-hydraulic control storm valve |
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| Publication Number | Publication Date |
|---|---|
| CN107476781A true CN107476781A (en) | 2017-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610407323.1A Pending CN107476781A (en) | 2016-06-07 | 2016-06-07 | All-hydraulic control storm valve |
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| Country | Link |
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| CN (1) | CN107476781A (en) |
Cited By (5)
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| CN109083618A (en) * | 2018-08-01 | 2018-12-25 | 东营市福利德石油科技开发有限责任公司 | Deep-well binary channels safety valve |
| CN110206509A (en) * | 2019-05-24 | 2019-09-06 | 中国地质科学院地质力学研究所 | A kind of water level differential pressure control valve |
| CN111561295A (en) * | 2020-05-20 | 2020-08-21 | 大庆丹诺石油科技开发有限公司 | Hydraulic oil extraction double-channel underwater safety valve for ocean oil well |
| CN111734318A (en) * | 2020-06-30 | 2020-10-02 | 合力（天津）能源科技股份有限公司 | Multifunctional hydraulic safety device for oil pipe |
| CN111927391A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Safety valve used in oil pipe and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109083618A (en) * | 2018-08-01 | 2018-12-25 | 东营市福利德石油科技开发有限责任公司 | Deep-well binary channels safety valve |
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| CN111561295A (en) * | 2020-05-20 | 2020-08-21 | 大庆丹诺石油科技开发有限公司 | Hydraulic oil extraction double-channel underwater safety valve for ocean oil well |
| CN111561295B (en) * | 2020-05-20 | 2024-05-10 | 大庆丹诺石油科技开发有限公司 | Double-channel underwater safety valve for hydraulic oil production of ocean oil well |
| CN111734318A (en) * | 2020-06-30 | 2020-10-02 | 合力（天津）能源科技股份有限公司 | Multifunctional hydraulic safety device for oil pipe |
| CN111734318B (en) * | 2020-06-30 | 2022-01-18 | 合力（天津）能源科技股份有限公司 | Multifunctional hydraulic safety device for oil pipe |
| CN111927391A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Safety valve used in oil pipe and working method thereof |
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