CN103742710B - A kind of replacing valving with pressure - Google Patents
A kind of replacing valving with pressure Download PDFInfo
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- CN103742710B CN103742710B CN201310541724.2A CN201310541724A CN103742710B CN 103742710 B CN103742710 B CN 103742710B CN 201310541724 A CN201310541724 A CN 201310541724A CN 103742710 B CN103742710 B CN 103742710B
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- lubricator
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- 241000239290 Araneae Species 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 230000007480 spreading Effects 0.000 claims abstract description 14
- 238000003892 spreading Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 60
- 238000012856 packing Methods 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 claims description 19
- 239000010720 hydraulic oil Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 5
- 238000003860 storage Methods 0.000 abstract description 2
- 201000005630 leukorrhea Diseases 0.000 abstract 1
- 206010046901 vaginal discharge Diseases 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 210000003017 ductus arteriosus Anatomy 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/1283—Plugging pig
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The invention provides a kind of replacing valving with pressure, comprise plugging device, zygote, lubricator, oil hydraulic cylinder, piston rod and operating stem, zygote one end is detachably connected to plugging device, lubricator storage plugging device and zygote, and is connected with oil hydraulic cylinder; Plugging device is mainly made up of cartridge, slip spider sealing assembly, differential pressure type piston and slips, and hydrodynamic pressure can make the automatic spreading of slips, realizes safety setting; Zygote one end is connected with operating stem oil hydraulic cylinder by the piston rod through lubricator.The present invention also provides simultaneously and uses leukorrhea of the present invention pressure to change the method that valving carries out replacing valve with pressure.Present invention achieves the sealing of instrument, setting, deblocking, internal pressure balance, and above-mentioned sophisticated functions completes continuously, automatically in one stroke, make operation simpler, reliable, decrease the uncertainty of manual operation, ensure that the safety of work progress and any pollution can not be caused to environment, greatly lowering construction cost.
Description
Technical field
The present invention relates to a kind of replacing valve and the replacing device operated under pressure of maintenance, be especially applied to replacing with pressure and the maintenance of the valves such as oil extraction well head, high pressure water injection wellhead, high pressure pipe joint.
Background technique
Oil extraction well head, water injection well, manifold are the fundamental equipments in modern petroleum petroleum production engineering, and high pressure valve is the critical piece on this kind equipment.Very bear erosion, the seldom maintaining of the aqueous mediums such as soda acid under rugged environment owing to being in field for a long time throughout the year, after equipment long-time running, valve there will be valve plate erosion, many phenomenons having a strong impact on its using function such as Sealing is aging, corrosion, cause these valve opens or close the problems such as difficulty, Sealing corrosion, seepage, bring very burden to well workover and field produces, these valves need the normal function changing ability restorer.Because the valve on this kind equipment runs all in a high voltage state, change these valves, a kind of way is by stratum natural infiltration step-down after stopping production, under state with no pressure, it is changed, off-time generally takes tens days even one month, field produces is caused and to have a strong impact on and renwing stratum pressure needs the water of at substantial, electric resources, and such way can be produced enterprise and is unfavorable, first the system associated with it all need in stopping production pressure release, next strata pressure being long-term injecting water is set up can be destroyed, the subsequent production of enterprise can be badly influenced, cause great production loss and energy consumption.Another kind of way carries out operation maintenance, employ the huge implement such as workover derrick, workover vehicle and carry out allowing pressurized maintenance, generally need within 2-3 days, complete, need to pay high operating cost.Therefore, need a kind of when not employing any engineering equipment, do not stop production, not pressure release the short time in complete apparatus and method to the replacing with pressure damaging valve.
Summary of the invention
The present invention is directed to the problems referred to above, provide a kind of novel replacing valving with pressure, concrete technical characteristics is as follows:
A kind of replacing valving with pressure, is characterized in that, be made up of plugging device, zygote, lubricator, oil hydraulic cylinder, piston rod and operating stem, wherein,
Plugging device comprises: be arranged on the cartridge fitted tightly on the internal diameter of fluid input tube on ring-type packing element base, ring-type packing element is closely socketed in the footstalk portion of slip spider sealing assembly, the footstalk portion of slip spider sealing assembly to extend in slips cover for seat and forms the cone part of slip spider assembly, the diameter of the cone part of slip spider assembly reduces along the direction of hydrodynamic pressure, slip spider assembly the curved surface of cone part fit in the bottom of slips slidably, the maximum diameter of slips region during the opening that the sharp portion that the maximum diameter of the cone part of slip spider assembly is greater than slips is put by slip spider complete spreading, slip spider assembly the end of cone part contact with mandrel, the other end and the differential type piston contact be arranged in slips cover for seat of mandrel, the end of slips cover for seat is provided with the tail end draw-in groove coordinated with the lock dog of zygote, slips is set to multiple, the sharp portion of the corresponding slips of opening difference that slip spider puts,
Zygote one end is provided with the lock dog operationally coordinated with tail end draw-in groove, the internal diameter of its other end is provided with the affixed mechanism with the major diameter fit of piston rod, zygote operationally by lock dog and plugging device affixed, by affixed mechanism and piston rod affixed;
Lubricator is the cylinder can receiving plugging device and zygote, and one end of its proximity junction zygote is provided with the bindiny mechanism coordinated with valve, its tail end away from zygote and oil hydraulic cylinder affixed;
Oil hydraulic cylinder is provided with hydraulic oil inlet and hydraulic oil outlet, its inside is provided with fixing hydraulic piston on the piston rod;
Piston rod runs through oil hydraulic cylinder and lubricator hollow structure slidably, and its length can run through oil hydraulic cylinder and lubricator and plugging device be delivered to the precalculated position of liquid input tube;
Operating stem slidably and/or rotate be arranged in piston rod, operating stem can stretch out from piston rod and with differential pressure type piston contact, the tail end of operating stem is provided with the slip of control operation bar and/or the operating device of rotation.
Further, the packing element base truncated cones body structure that to be external diameter increase along the direction of hydrodynamic pressure, cartridge is slidably disposed on packing element base.
Further, packing element base, slip spider sealing assembly and mandrel are overall structures, packing element base portion extends to the cone part being formed in slips cover for seat and reduce along hydrodynamic pressure orient diameter, the end of cone part continues to extend to form mandrel portion along the direction of hydrodynamic pressure, mandrel portion and differential pressure type piston contact.Further preferably, packing element base portion is the truncated cone that external diameter increases along hydrodynamic pressure direction.
Further, affixed mechanism is arranged on the outside thread of piston rod external diameter and is arranged on internal thread, outside thread and the screw-internal thread fit of internal diameter of corresponding end of zygote.
Further, slips is set to 3.
Further, operating device is six square nuts.
Further, operating stem is provided with the recess coordinated with lock dog or protuberance.
Present invention also offers and a kind ofly use above-mentioned replacing valving with pressure to carry out the method for replacing valve with pressure, it is characterized in that, comprise the following step:
1) plugging device is operationally secured on zygote by lock dog, zygote is secured on piston rod by affixed mechanism, operating stem is inserted in piston rod also through the differential pressure type piston contact in piston rod and plugging device, the tail end of operating stem by operating device and piston rod operationally affixed, plugging device and zygote are accommodated in lubricator, the tail end of lubricator is connected with oil hydraulic cylinder, is combined into replacing device operated under pressure;
2) after closed old valve, the pipeline of the output terminal being connected to old valve is disassembled, and lubricator is connected to the output terminal of old valve;
3) plugging device one end of the lubricator of plugging device and zygote there is is to be sealably coupled to the output terminal of old valve step 1) combination;
4) open old valve, add pressure at oil hydraulic cylinder, piston rod is promoted zygote and is entered in fluid input tube by old valve by plugging device, until plugging device arrives precalculated position;
5) setting operation is carried out, by operating device, operating stem is slowly bounced back, and the setting assembly of hydrodynamic pressure promotion slips moves in slips cover for seat, and the bottom of the cone part compressing slips of slip spider sealing assembly, make the opening of the sharp portion of slips by slips cover for seat and the contact internal walls of fluid input tube, until the complete spreading of slips, realize setting;
6) the slow step-down of oil hydraulic cylinder, by operating device, the lock dog of zygote and plugging device are unlocked simultaneously, zygote and plugging device depart from, then the zygote and lubricator that are received into lubricator are disassembled from the output terminal of old valve, and dismantle old valve, then install new valve, and the zygote departed from plugging device and lubricator are installed to the output terminal of new valve;
7) new valve is held open state, is passed through the input end of new valve and is contacted with the plugging device in fluid input tube, make zygote and plugging device again affixed by operating device by the promotion zygote of the hydraulic pressure of oil hydraulic cylinder;
8) carry out unsealing operation, make operating stem promote differential pressure type piston by operating device, differential pressure type piston makes the mandrel promotion reverse direction in hydrodynamic pressure of the setting assembly of slips move, slips gets loose, then, plugging device is recovered in lubricator by slow step-down, closed new valve;
9) dismantle replacing device operated under pressure, the export pipeline of the output terminal of new valve with old valve is connected.
Replacing valving with pressure of the present invention and method thereof have following advantage:
1, the plugging device of replacing valving with pressure of the present invention make use of the differential piston of innovative design, utilize down-hole pressure automatic spreading slips time setting, down-hole pressure is larger, and the tension of slips is also larger, thus ensure that plugging device can be reliably stuck at inner-walls of duct, ensure construction safety;
2, plugging device cartridge adopts rational automatic tensioning opening structure, and rise outside automatic under down-hole pressure effect, and down-hole pressure is larger, outer tension is also larger, thus ensures airtight quality, guarantees the thorough isolation of instrument front end and back end pressure;
3, slide block type zygote makes plugging device and oil hydraulic cylinder realize reliably docking and being separated, and ensures the operation to plugging device and control.Meanwhile, make oil hydraulic cylinder separate pipeline, avoid because of the security risk that contact tool causes in construction, vital effect is played to construction safety.
4, the differential piston of particular design can pressure before and after autobalance plugging device,
5, structural design that is exquisite, science makes this apparatus structure compact, and volume is little, lightweight, ensure that the combination that to realize setting, deblocking, instrument in pipeline narrow space and is separated and sends into, takes out.
The present invention adopts inner stepped piston, achieve the sealing of instrument, setting, deblocking, internal pressure balance dexterously, zygote makes plugging device and oil hydraulic cylinder positive engagement and disengaging, and above-mentioned sophisticated functions makes it complete continuously, automatically in one stroke by structural design dexterously, make operation simpler, reliable, decrease the uncertainty of manual operation, ensure that the safety of work progress and any pollution can not be caused to environment.The compact of this device simultaneously, package unit only has 30 kilogram weights, and only need 3 workmans in work progress, generally completed in two hours, without any need for engineering machinery, construction cost is about 1/10th of Normal practice.
Accompanying drawing explanation
Fig. 1 is the plugging device structural representation of the embodiment according to replacing valving with pressure of the present invention.
Fig. 2 is the structural representation of the zygote of above-described embodiment, lubricator and oil hydraulic cylinder;
Fig. 3 be the embodiment installing replacing valving with pressure of the present invention disassemble view;
Fig. 4 is the view of an embodiment when entering the old valve that will change according to replacing valving with pressure of the present invention;
Fig. 5 is the plugging device of an embodiment according to replacing valving with pressure of the present invention and the schematic diagram of its zygote disengaged position.
Embodiment
In order to make the object of the invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The existing pipe pressurized valve technology that changes is after special capping tools is sent into precalculated position, external force (bolt rotary) is relied on to drive the clamping part that rises setting, cannot control the tension of slips and caught state, very easily there is slips slippage in work progress, phenomenon that plugging device is deviate from, cause hurting sb.'s feelings or the eruption of high pressure liquid (gas) body and the serious accident such as out of control, there is very large potential safety hazard.
The present invention adopts very scientific and reasonable structure, in narrow space, realizes three zones simultaneously: the combination of (1) plugging device and oil hydraulic cylinder be separated; (2) pressure of autobalance plugging device front end and rear end; (3) plugging device is automatically setting, and setting state regulates automatically with borehole pressure size, thus ensures the safe, reliable of setting state.Guarantee the safe, efficient of work progress.
The operating procedure of replacing valving with pressure of the present invention is as follows:
1, after being connected with oil hydraulic cylinder by plugging device by zygote, oil hydraulic cylinder is utilized to be retracted in lubricator;
2, the valve closing will damaged, removes the pipeline of valve outer end;
3, lubricator front end is connected with valve outer end;
4, the old valve that will change is opened;
5, suppress to oil hydraulic pump, plugging device is sent in the pipeline of valve nose by oil hydraulic cylinder (oil hydraulic cylinder);
6, operate operating stem, its slips is risen dead at inner-walls of duct, meanwhile, cartridge tensioner, at inner-walls of duct, isolates front and back pressure;
7, zygote makes plugging device be separated with oil hydraulic cylinder, and operation oil hydraulic cylinder, regains zygote;
8, after changing the valve damaged, connect lubricator, zygote docks with plugging device, regains the slips of spreading, and keep pressure slowly to reduce by oil hydraulic cylinder, namely plugging device exits slowly, closes new valve;
9, open new valve after recovery system pipeline, construction terminates.
Replacing valving with pressure of the present invention is further illustrated below in conjunction with embodiment and accompanying drawing.
Referring now to Fig. 1, be depicted as the structural representation of the plugging device part according to replacing valving with pressure of the present invention, the diameter 1-2mm larger than the internal diameter of the fluid input tube changing valve of cartridge 101, it is arranged on ring-type packing element base 106 hermetically, bottom and the slips cover for seat 103 of this packing element base 107 are affixed, and the inner ring of packing element base 106 fits tightly in the footstalk portion of slip spider sealing assembly 107.Preferably, packing element base 106 is truncated cone, its external diameter increases along the pressure direction of fluid, thus, when fluid applies pressure to cartridge 101, cartridge 101 is slided to the direction that packing element base 106 external diameter expands under stress, makes cartridge be adjacent to fluid input tube inwall further, result is that the pressure that cartridge is subject to is larger, and its seal degree is higher; On the other hand, also effectively prevent the poorly sealed close situation caused because liquid tube wall is irregular.Slips cover for seat 103 is cylinders of hollow, and its one end is provided with the opening corresponding with the difference sharp portion of multiple slips 102, and its other end is provided with differential type piston 105.The quantity of described slips 102 is preferably 3 or 4.The other end of slip spider sealing assembly 107 is the cone part of shrinking to axle center being positioned at slips cover for seat 103.Preferably, the distance that when length that the end in the footstalk portion of slip spider sealing assembly 107 stretches out packing element base 106 is equal to or greater than setting, slip spider sealing assembly 107 shrinks, but, the distance that when length that the end in the footstalk portion of slip spider sealing assembly 107 stretches out packing element base 106 also can be less than setting, slip spider sealing assembly 107 shrinks, but at least to ensure that the footstalk portion of slip spider sealing assembly 107 can not get loose from packing element base 106, leak to stop fluid.The maximum diameter place of the cone part of slip spider sealing assembly be more than or equal to slips 102 completely spreading time slips bottom the maximum diameter in space that formed, with ensure slip spider sealing assembly 107 can not Yin Kawa 102 spreading and get loose.The maximum diameter of the cone part of slip spider sealing assembly 107 can be more than or equal to, and is even less than the diameter in the footstalk portion of slip spider sealing assembly 107.Slips 102 is arranged in slips cover for seat 103 movably, and its top sharp portion is mobilizable by opening corresponding in slips cover for seat 103 turnover, and the base plane of slips 102 is then fitted movably with the inclined-plane of the cone part of slip spider sealing assembly 107.One end of mandrel 104 is combined with the end of the cone part of slip spider sealing assembly 107, and its other end is combined with the differential type piston 105 being arranged on slips cover for seat 103 end.Preferably, be provided with ring-type barrier block 108 in slips cover for seat 103, mandrel 104 is slidably through the center of ring-type barrier block 108.Also be provided with tail end draw-in groove 109 at the inwall of the end of slips cover for seat 103, this tail end draw-in groove 109 coordinates with the lock dog of zygote, for affixed zygote.
Slip spider sealing assembly also can form overall mechanism with mandrel, and namely one end is columniform slip spider sealing assembly footstalk portion, and middle part is the cone part of slip spider assembly, and cone part is retracted to a certain degree and extends with cylinder once again, is mandrel portion.
The bottom of packing element base also can be not affixed with slips cover for seat but form entirety with the footstalk portion of slip spider sealing assembly.Like this, enough movable space to be there is between the bottom of this packing element base and slips cover for seat, make slip spider sealing assembly bounce back to realize slips under the effect of the pressure setting.
Figure 2 shows that the structural representation of replacing valving with pressure of the present invention when not installing plugging device, wherein, zygote 202 comprises combined cover 202-1 and lock dog 202-2.Preferably, lock dog 202 is resilient member, when operating stem 203 is through this lock dog 202, lock dog 202 is opened, thus is locked in the tail end draw-in groove of plugging device, when operating stem 203 is extracted out from lock dog, this lock dog 202 shrinks, and zygote 202 is departed from from tail end draw-in groove.Further preferably, this operating stem 203 can be arranged the recess/protuberance coordinated with lock dog 202, when rotating this operating stem 203 and making recess correspondence lock dog, lock dog 202 shrinks/opens; And when rotate this operating stem 203 make recess/protuberance not corresponding lock dog time, lock dog opens/shrinks, and zygote 202 is locked in tail end draw-in groove.Combined cover 202-1 is hollow cylindrical structure, the major diameter fit of its stopper end is in the internal diameter being provided with the end of differential type piston of plugging device, and the operationally lock dog 202-2 of ring-type is provided with around its external diameter, the internal diameter of operating end has and coordinates affixed mechanism with piston rod 208.Zygote 202 is attached on piston rod 208 by the affixed mechanisms operable of operating end, this affixed mechanism be preferably arranged on the internal diameter of operating end internal thread and be arranged on piston rod external diameter with the outside thread of this screw-internal thread fit, be slidably disposed in operating stem 203 in piston rod 208 slidably through zygote 202.Piston rod 208 and the operating stem 203 be arranged in piston rod 208 run through lubricator 204 and oil hydraulic cylinder 206 slidably.Lubricator 204 proximity junction zygote 202 is arranged, and lubricator 204 can receive plugging device and zygote 202.On lubricator 204, the end of proximity junction zygote 202 is provided with the bindiny mechanism coordinated with valve, and this bindiny mechanism is preferably flange, can installation of relief valve 205 on lubricator 204.Lubricator 204 away from the end of zygote 202 and oil hydraulic cylinder 206 affixed, preferably by Flange joint.Oil hydraulic cylinder 206 is provided with hydraulic piston 207, hydraulic oil inlet and hydraulic oil outlet.The hydraulic oil inlet of oil hydraulic cylinder is connected with high-pressure hand pump respectively by high pressure hose with outlet.Hydraulic piston 207 is fixed on piston rod 208, and fit tightly slidably with the internal diameter of oil hydraulic cylinder 206, when being filled with hydraulic oil by hydraulic oil inlet, can slide to the direction of lubricator 204 by promoting hydraulic piston 207, make piston rod 208 promote zygote 202 simultaneously, make operating stem 203 promote mandrel and related slip spider sealing assembly simultaneously, thus plugging device can be moved when slips is not setting in fluid input tube.Operating stem 203 is provided with operating device 209 away from the tail end of zygote 202, and this operating device 209 can the rotation of control operation bar in piston rod or slip, and preferably, this operating device 209 is six square nuts.
Figure 3 shows that the structural representation of each several part to be combined of the embodiment according to replacing valving with pressure of the present invention.Zygote 302 enter plugging device 301 opening end and by the lock dog 302-2 on combined cover 302-2 and plugging device 301 affixed, this lock dog 302-2 can engage with the tail end draw-in groove 301-6 in plugging device 301, and can control the state of its engagement by operating stem 303; The other end of zygote 302 has the affixed mechanism with the one end fits of piston rod 308, affixed with zygote 302 by this affixed mechanism piston bar 308, the internal diameter that this affixed mechanism is preferably the combined cover 301-1 of zygote 302 has internal thread, and this internal thread coordinates with the outside thread on the external diameter of one end of piston rod 308.After assembling, the truncated cone body of slip spider sealing assembly, mandrel, differential type piston and the operating stem be arranged in piston rod connect successively.
Be positioned at device foremost after plugging device assembling, it is connected with oil hydraulic cylinder by zygote, is fed to that the pipeline of valve nose is interior to be separated with oil hydraulic cylinder afterwards.Its Main Function is: (1) folding and unfolding slips.When carrying out setting operation, differential pressure type piston by slips spreading under the effect of system internal pressure, can ensure that plugging device is reliably stuck on the tube wall of valve nose; When taking out, differential pressure type piston top can return by oil hydraulic cylinder, and now slips is regained, and ensures that plugging device can successfully take out in pipeline; (2) pressure of plugging device front end and rear end is thoroughly isolated.The packing element itself carried can along with the disengaging of oil hydraulic cylinder under manifold pressure effect automatic spreading, thus play the effect of sealing, isolation front end and back end pressure, the replacing of valve carried out under the condition not having pressure.
Be positioned at the middle-end of device after zygote assembling, its Main Function is: plugging device 1 is reliably connected with oil hydraulic cylinder by (1), makes it can send to precalculated position under the effect of oil hydraulic cylinder; (2) when plugging device complete setting after make it to be separated with oil hydraulic cylinder; (3) after replacing valve, oil hydraulic cylinder is docked with plugging device, plugging device is taken out in pipeline.
Oil hydraulic cylinder: the rear end being positioned at device after assembling, its Main Function is: (1), when sending into plugging device, plugging device is sent into pipeline by the power relying on oil hydraulic pump to provide; (2) after replacing valve completes, receive plugging device, and rely on hydraulic power to make it slowly, steadily to shift out in pipeline; (3) the operation mandrel of its inside carries out combining to zygote and controls with departing from.Lubricator is connected with oil hydraulic cylinder front end, storage plugging device, and prevents highly pressurised liquid from spraying outward after device is connected with valve outer end.
Oil hydraulic pump: be connected with oil hydraulic cylinder by high pressure hose, for oil hydraulic cylinder provides power.
Figure 4 shows that the schematic diagram according to the embodiment replacing valve with pressure according to replacing valving with pressure of the present invention of the present invention.The lubricator 404 of replacing valving with pressure is connected with the output terminal of the old valve 410 that will change, and preferably, adopts Flange joint.Now, the cartridge of shutoff pipe 401 can extend in the output terminal of old valve 410 in advance, and other parts and zygote 402 are accommodated in lubricator 404 in the lump; Also shutoff pipe 401 entirety and zygote 402 can be made to be accommodated in the lump in lubricator 404.
After old valve 410 is opened, hydraulic oil is filled with by the hydraulic oil inlet be arranged on oil hydraulic cylinder 406, setting in hydraulic drive oil hydraulic cylinder hydraulic piston on the piston rod moves to the direction of the fluid input tube 407 of old valve 410 opposite side, hydraulic piston drives piston rod to move in the same way together with operating stem, piston rod promotes zygote 402 and moves, and zygote 402 promotes the slips cover for seat motion of plugging device 401 again.Simultaneously operating stem then promotes the differential type piston in plugging device, makes differential type piston promote mandrel and also moves in the same way, promote the setting assembly of slips at mandrel to flow direction, makes slips at this moment can not spreading.Continue injection liquid force feed, plugging device 401 and zygote 402 are entered in liquid input tube 407 through old valve 410.
After plugging device 402 is sent to precalculated position, close hydraulic oil inlet, by the operating device 403 on operating stem, operating stem is reclaimed gradually, slip spider sealing assembly is bounced back under the effect of the pressure, its cone part makes slips be oppressed and spreading, the slips of spreading and the contact internal walls of fluid input tube 407, and rise gradually extremely along with the retraction of slip spider sealing assembly, realize setting.Be present and be honored as a queen, open the hydraulic oil outlet on oil hydraulic cylinder 406, pressure in oil hydraulic cylinder is slowly declined, because the hydrodynamic pressure in fluid input tube 407 is greater than the pressure that oil hydraulic cylinder provides, the cartridge of plugging device 401 is close to the inwall of fluid input tube 407, and plugging device 401 is finally stuck in fluid input tube 407.After plugging device 401 is stuck, by operating stem 403, zygote 402 is got loose from plugging device 401, zygote 402 is received and is gone back on defense in jet pipe together with piston rod.
Then, can respectively the valve replacing device operated under pressure departed from plugging device and old valve be disassembled from fluid input tube.
When changing new valve, tight for fluid input tube is still closed by plugging device, first new valve is installed on the fluid input tube by ductus arteriosus occluder, then, then is connected with the lubricator of replacing valving with pressure that plugging device 1 departs from the output terminal of new valve.And zygote is still accommodated in lubricator.
Then, as shown in Figure 5, after new valve 510 is opened, under the promotion of oil hydraulic cylinder, make zygote 502 by new valve 510, and arrive the position that can be connected with plugging device 501.After made zygote 502 be connected with plugging device 501 by operating stem, the differential piston in operating stem promotion plugging device 501 is made by the operating device 503 of operating stem tail end, differential pressure type piston promotes mandrel and slip spider sealing assembly again, slips is recovered in slips cover for seat, realizes deblocking.Slip spider sealing assembly can also drive the packing element sealed base of truncated cones shape, and the laminating degree of the inwall of cartridge base and fluid input tube is declined, and is easy to regain plugging device 501.Close the hydraulic oil inlet of oil hydraulic cylinder 506, open hydraulic oil outlet and the hydraulic pressure of oil hydraulic cylinder 506 is slowly reduced, plugging device 501 slowly can be regained in lubricator 504 along with zygote 502.When plugging device 501 is completely by after new valve 510, new valve 510 can be closed.Then, replacing valving with pressure is disassembled from the output terminal of new valve 510, then export pipeline is connected the work just completing whole replacing valve with pressure with this output terminal.
The foregoing is only preferred embodiment of the present invention, be not used for limiting practical range of the present invention; If do not depart from the spirit and scope of the present invention, the present invention is modified or equivalent to replace, in the middle of the protection domain that all should be encompassed in the claims in the present invention.
Claims (9)
1. a replacing valving with pressure, is characterized in that, comprises plugging device, zygote, lubricator, oil hydraulic cylinder, piston rod and operating stem, wherein,
Described plugging device comprises: be arranged on the cartridge fitted tightly on the internal diameter of fluid input tube on ring-type packing element base, described ring-type packing element is closely socketed in the footstalk portion of slip spider sealing assembly, the footstalk portion of described slip spider sealing assembly to extend in slips cover for seat and forms the cone part of slip spider sealing assembly, the diameter of the cone part of described slip spider sealing assembly reduces along the direction of hydrodynamic pressure, the curved surface of the cone part of described slip spider sealing assembly fits in the bottom of slips slidably, the maximum diameter of described slips region during the opening complete spreading that the sharp portion that the maximum diameter of the cone part of described slip spider sealing assembly is greater than described slips is put by described slip spider, the end of the cone part of described slip spider sealing assembly contacts with mandrel, the other end and the differential type piston contact be arranged in described slips cover for seat of described mandrel, the end of described slips cover for seat is provided with the tail end draw-in groove coordinated with the lock dog of described zygote, ring-type barrier block is provided with in described slips cover for seat, described mandrel is slidably through the center of described ring-type barrier block, described slips is set to multiple, the sharp portion of the corresponding described slips of opening difference that described slip spider puts,
Described zygote one end is provided with the lock dog operationally coordinated with described tail end draw-in groove, the internal diameter of its other end is provided with the affixed mechanism with the major diameter fit of piston rod, described zygote operationally by described lock dog and described plugging device affixed, by described affixed mechanism and described piston rod affixed;
Described lubricator is the cylinder can receiving plugging device and zygote, and one end of its contiguous described zygote is provided with the bindiny mechanism coordinated with valve, its tail end away from described zygote and oil hydraulic cylinder affixed;
Described oil hydraulic cylinder is provided with hydraulic oil inlet and hydraulic oil outlet, its inside is provided with the hydraulic piston be fixed on described piston rod;
Described piston rod is the hollow structure running through described oil hydraulic cylinder and lubricator slidably, and its length can run through described oil hydraulic cylinder and lubricator and plugging device be delivered to the precalculated position of liquid input tube;
Described operating stem slidably and/or rotate be arranged in described piston rod, described operating stem can stretch out from described piston rod and with described differential type piston contact, the tail end of described operating stem is provided with the slip of control operation bar and/or the operating device of rotation.
2. replacing valving with pressure as claimed in claim 1, is characterized in that, the described packing element base frustum cone structure that to be external diameter increase along the direction of hydrodynamic pressure, described cartridge is slidably disposed on described packing element base.
3. replacing valving with pressure as claimed in claim 1, it is characterized in that, described packing element base, slip spider sealing assembly and mandrel are overall structures, packing element base extends to the cone part being formed in slips cover for seat and reduce along hydrodynamic pressure orient diameter, the end of described cone part continues to extend to form mandrel portion along the direction of hydrodynamic pressure, described mandrel portion and described differential type piston contact.
4. replacing valving with pressure as claimed in claim 3, is characterized in that, described packing element base is the round platform that external diameter increases along hydrodynamic pressure direction.
5. replacing valving with pressure as claimed in claim 1, is characterized in that, described affixed mechanism is arranged on the outside thread of piston rod external diameter and is arranged on internal thread, described outside thread and the described screw-internal thread fit of internal diameter of corresponding end of described zygote.
6. replacing valving with pressure as claimed in claim 1, it is characterized in that, described slips is set to 3.
7. replacing valving with pressure as claimed in claim 1, is characterized in that, described operating device is six square nuts.
8. replacing valving with pressure as claimed in claim 1, is characterized in that, described operating stem is provided with the recess or protuberance that coordinate with described lock dog.
9. use the replacing valving with pressure described in claim 1-8 any one to carry out a method for replacing valve with pressure, it is characterized in that, comprise the following step:
1) plugging device is operationally secured on zygote by lock dog, described zygote is secured on piston rod by affixed mechanism, operating stem is inserted in piston rod also through the differential type piston contact in piston rod and described plugging device, the tail end of described operating stem by operating device and described piston rod operationally affixed, described plugging device and zygote are accommodated in lubricator, the tail end of described lubricator is connected with oil hydraulic cylinder, is combined into replacing device operated under pressure;
2) after closed old valve, the pipeline of the output terminal being connected to described old valve is disassembled, and lubricator is connected to the output terminal of described old valve;
3) by step 1) combination have plugging device one end of the lubricator of plugging device and zygote to be sealably coupled to the output terminal of described old valve;
4) open old valve, add pressure at described oil hydraulic cylinder, described piston rod is promoted described zygote and is entered in fluid input tube by described old valve by described plugging device, until described plugging device arrives precalculated position;
5) setting operation is carried out, by operating device, described operating stem is slowly bounced back, and the setting assembly of hydrodynamic pressure promotion slips moves in slips cover for seat, and the bottom of the cone part compressing slips of slip spider sealing assembly, make the opening of the sharp portion of slips by described slips cover for seat and the contact internal walls of described fluid input tube, until the complete spreading of described slips, realize setting;
6) the slow step-down of described oil hydraulic cylinder, by operating device, the lock dog of described zygote and described plugging device are unlocked simultaneously, described zygote and described plugging device depart from, then the described zygote and lubricator that are received into described lubricator are disassembled from the output terminal of described old valve, and dismantle described old valve, then install new valve, and the described zygote departed from plugging device and lubricator are installed to the output terminal of described new valve;
7) described new valve is held open state, by the promotion of the hydraulic pressure of described oil hydraulic cylinder, described zygote is by the input end of described new valve and contact with the plugging device in described fluid input tube, by operating device make described zygote and described plugging device again affixed;
8) unsealing operation is carried out, described operating stem is made to promote differential type piston by described operating device, described differential type piston makes mandrel promote the reverse direction in hydrodynamic pressure of described slip spider sealing assembly to move, described slips gets loose, then, described plugging device is recovered in described lubricator by slow step-down, closed described new valve;
9) dismantle described replacing device operated under pressure, the export pipeline of the output terminal of described new valve with described old valve is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541724.2A CN103742710B (en) | 2013-09-29 | 2013-11-05 | A kind of replacing valving with pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310452553 | 2013-09-29 | ||
| CN201310452553.6 | 2013-09-29 | ||
| CN2013104525536 | 2013-09-29 | ||
| CN201310541724.2A CN103742710B (en) | 2013-09-29 | 2013-11-05 | A kind of replacing valving with pressure |
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| CN103742710A CN103742710A (en) | 2014-04-23 |
| CN103742710B true CN103742710B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320694304.3U Expired - Fee Related CN203594868U (en) | 2013-09-29 | 2013-11-05 | Device for replacing valve under pressure |
| CN201310541724.2A Expired - Fee Related CN103742710B (en) | 2013-09-29 | 2013-11-05 | A kind of replacing valving with pressure |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320694304.3U Expired - Fee Related CN203594868U (en) | 2013-09-29 | 2013-11-05 | Device for replacing valve under pressure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203594868U (en) * | 2013-09-29 | 2014-05-14 | 锡林郭勒盟奥科特油田技术服务有限责任公司 | Device for replacing valve under pressure |
| CN106195639A (en) * | 2016-08-25 | 2016-12-07 | 山东钢铁股份有限公司 | The online more changing device of coal gas drainer down-comer valve |
| CN108890576B (en) * | 2018-07-30 | 2019-11-19 | 江苏金石机械集团有限公司 | A kind of method of replacement high pressure valve with pressure |
| CN113738947A (en) * | 2021-08-31 | 2021-12-03 | 西安东新石油设备厂有限公司 | Mechanical under-pressure valve repairing device and using method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538995A (en) * | 2009-02-27 | 2009-09-23 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Method for replacing valve by utilizing borehole pressure |
| CN201763286U (en) * | 2010-09-09 | 2011-03-16 | 北京金鼎通达油气技术服务有限责任公司 | Device for changing valve under pressure with no releasing sub |
| CN203594868U (en) * | 2013-09-29 | 2014-05-14 | 锡林郭勒盟奥科特油田技术服务有限责任公司 | Device for replacing valve under pressure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4919638B2 (en) * | 2005-09-16 | 2012-04-18 | コスモ工機株式会社 | Water control body installation device |
-
2013
- 2013-11-05 CN CN201320694304.3U patent/CN203594868U/en not_active Expired - Fee Related
- 2013-11-05 CN CN201310541724.2A patent/CN103742710B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538995A (en) * | 2009-02-27 | 2009-09-23 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Method for replacing valve by utilizing borehole pressure |
| CN201763286U (en) * | 2010-09-09 | 2011-03-16 | 北京金鼎通达油气技术服务有限责任公司 | Device for changing valve under pressure with no releasing sub |
| CN203594868U (en) * | 2013-09-29 | 2014-05-14 | 锡林郭勒盟奥科特油田技术服务有限责任公司 | Device for replacing valve under pressure |
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| CN103742710A (en) | 2014-04-23 |
| CN203594868U (en) | 2014-05-14 |
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Effective date of registration: 20161128 Address after: 026000. The Inner Mongolia Autonomous Region, Xilinguole Meng, Xilinhaote Patentee after: Yuan Zhanliang Address before: 026000 the Inner Mongolia Autonomous Region Xilinguole Meng Xilinhaote Guangda Hin City District Patentee before: XILIN GOL LEAGUE AOKETE OILFIELD TECHNOLOGY SERVICES Co.,Ltd. |
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