CN104265227B - The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling - Google Patents
The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling Download PDFInfo
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- CN104265227B CN104265227B CN201410476449.5A CN201410476449A CN104265227B CN 104265227 B CN104265227 B CN 104265227B CN 201410476449 A CN201410476449 A CN 201410476449A CN 104265227 B CN104265227 B CN 104265227B
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- centering
- piston
- flexible coupling
- piston cylinder
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
- E21B33/038—Connectors used on well heads, e.g. for connecting blow-out preventer and riser
Abstract
The invention provides a kind of pneumatic device that is flexible coupling of follow-up centering, be applied to offshore drilling and support the connection between platform and other platforms.The air accumulator of this device that is flexible coupling is with cylinder and the piston cylinder Trinity, compact conformation；The gas of air accumulator storage supplements the difference of cylinder institute air demand in real time, piston cylinder compressing or expanding and the active force of inside and outside telescopic spring, common equilibrium platform oscillation load by the upper and lower gas to chamber of cylinder, automatically adjusts radial displacement；Centralizer realizes follow-up centering, makes cylinder and piston cylinder keep concentric, and device for adjusting deviation completes angle tuningout, it is ensured that device for adjusting deviation upper surface keeps level；Upper guide combines lower guider and realizes radially-directed effect, makes the axis of cylinder and piston cylinder coincide, and the two is sealed by the combined stuffing sealing structure of seal simultaneously；Automatic inflating device device ensures automatic inflating device or closes gas, and pressure safety valve realizes air pressure and promptly discharges, and package unit is prone to dismounting, operation and maintenance.
Description
Technical field
The present invention is applicable to the connector between marine deep water hydrocarbon field and marginal oil field platform, particularly to a kind of offshore drilling support
Can be with the pneumatic device that is flexible coupling of follow-up centering when being connected between platform with other platforms.
Background technology
Along with marine deep water hydrocarbon field and the continuous propelling of marginal oil field strategy, the platform construction of deepwater oil-gas development will be more
Tool scale, deepwater floating platform is the most sensitive to the weight of upper chunk, for reducing the area occupied of Platform Deck and alleviating top
Chunk weight, the necessary drilling device such as derrick when deep water platform often considers only to arrange on chunk at an upper portion thereof workover treatment,
And drilling well or beat and adjust the support module of well operations and auxiliary facility, and the life building of associative operation personnel and required outfit is then
It is arranged in special offshore drilling and supports platform.
Offshore drilling is supported to need to configure special connector when being connected between the deep water platforms such as platform and floating.At present, abroad due to
The reasons such as technical know-how, the document report in terms of there is not yet so far about connector design principle and CONSTRUCTED SPECIFICATION；Domestic can
Welding trestle etc. is often used to couple the fixed form of thing when being connected between mobile drilling platform with jacket fixed platform, and marine
Drilling well supports that the mode connected between the deep water platforms such as platform and floating the most not yet carries out studying the most relevant through engineering approaches and is applied to
Really, meanwhile deep water platform can constantly occur vibration and drift in drilling well or during beating adjustment well operations so that existing fixing
The platform connected mode that trestle etc. couple thing is the most applicable.
For this reason, it is necessary to according to vibrating during the deep water platform operation such as floating and the actual condition such as drift, by employing new technology,
New method and processing technology, research and develop the pneumatic device that is flexible coupling of novel follow-up centering, to realize offshore drilling support platform and other deep water
Connection between platform, reaches reduce the floor space of deep water platform and alleviate the purpose of platform upper chunk weight simultaneously.
Summary of the invention
In order to overcome the defect and deficiency that between existing packaged type drilling platforms and jacket fixed platform, connector technique exists, and
Improve domestic offshore drilling and support that between platform and other platforms, connected mode is still in the present Research of starting stage, the mesh of the present invention
A kind of applicable offshore drilling that is to provide support that follow-up centering when being connected between the deep water platforms such as platform and other floating is pneumatic soft
Connector.This device that is flexible coupling, according to pneumatic mechanism and the special tectonic of follow-up centering mechanism, possesses compact conformation, the same gas of air accumulator
Cylinder and the piston cylinder Trinity, balance platform oscillation load, automatically adjust radial displacement, cylinder and piston cylinder radially-directed, with
Dynamic to features such as neutralization angle tuningout, automatic Rapid degassings.
The technical solution adopted for the present invention to solve the technical problems is that a kind of offshore drilling of exploitation supports that platform follow-up centering is pneumatic soft
Connector, mainly by device for adjusting deviation, cylinder, air accumulator, piston cylinder, upper guide, seal, lower guider, centralizer and
Several parts compositions such as automatic inflating device device.The pneumatic device that is flexible coupling of follow-up centering is fixed on offshore drilling by device for adjusting deviation supports the stack of platform
Bridges etc. couple thing, when needing to carry out operation, are attached by the deck of the deep water platforms such as centralizer and floating；At deep water platform
When carrying out vertical vibration up or down, there is in cylinder and air accumulator the gas compression of certain pressure or expansion and combine spring
Stretch and jointly act on piston cylinder, to balance oscillation load, automatically adjust radial displacement；And at deep water platform generation water
When flat drift or deflection, centralizer carries out follow-up centering according to spherical mechanism, it is ensured that cylinder and piston cylinder concentric all the time, simultaneously
Device for adjusting deviation carries out the tuningout of respective angles the most therewith, it is ensured that device for adjusting deviation upper surface and centralizer lower surface remain level.
Device for adjusting deviation has been used for the angle tuningout of cylinder and piston cylinder, and ensures that the upper surface of device for adjusting deviation remains level, its bag
Include upper bracket, bearing cap, cylindrical roller thrust bearing, packing ring, sleeve, cross axle, oiling groove, plug screw and undersetting, its
Main material selection Stainless steel 316 L.Upper bracket structure identical with undersetting employing and in decussation arrange, wherein upper bracket
Base central authorities be machined with groove, and surrounding is disposed with screw, and realizes device for adjusting deviation by bolt and support that platform joins with offshore drilling
Connect the connection of thing；And the base of undersetting is fixed with cylinder by welding.The support of upper bracket and undersetting all uses U-shaped
Structure, the both sides of support are machined with the dead eye being arranged symmetrically with, thick interior thin outside dead eye, the wherein embedded matched in clearance therewith of pore
Sleeve, be sequentially arranged biserial cylindrical roller thrust bearing and packing ring in gross porosity, it is achieved while cross axle rotating function balance ten
The axially loaded of word axle；It is machined with screw hole on boss outside gross porosity, and is coupled with bearing cap by screw, in bearing cap
Centre is provided with cylindrical end tangs, and boss external diameter is less than the external diameter of cylindrical roller thrust bearing inner ring, to realize in cylindrical roller thrust bearing
The location of circle.Cross axle is used for realizing the tuningout of device for adjusting deviation all angles, and its material uses 35CrMo, profile in " ten " font,
The axle journal that cross axle is respectively held coordinates with the cylindrical roller thrust bearing in upper bracket and undersetting dead eye successively.Upper bracket and lower
All it is threaded hole on the bearing hole wall of seat, couples with the external screw thread of oiling groove, supplement cylindrical roller thrust bearing in time
Lubricating oil, oiling groove uses column-shaped barrel structure, the inside and outside anchor ring of cylinder is all machined with sealing pipe screw thread, and cylinder
Oil filler point evenly distributed in the circumferential direction it is designed with on end wall.Oiling groove internal thread hole couples with plug screw, it is achieved lubricating oil close
Envelope.
Gas in cylinder has certain pressure and comes balanced oscillator load, the material selection stainless steel of cylinder by compression or expansion
316L and interior hard chrome plating, use the structure of vertical vessel, is divided into single end socket and cylinder body two parts.Cylinder top uses oval single
End socket, single end socket top is fixed with device for adjusting deviation by the steel pipe of welding, is provided with pressure safety valve, pressure at single end socket outer rim
Power safety valve, when cylinder internal gas pressure exceedes the dangerous working condition of limit value, discharges pressure by mechanism automatic deflation.Single end socket
Being attached with cylinder body by circumferential weld, the upper and lower of cylinder wall is machined with the sealing pipe spiral shell of equidistant layered arrangement respectively
Pit, every layer of pipe screwed hole is the most evenly distributed；The inner surface of cylinder body needs to be ground processing, the flange of its underpart
Dish is coupled with seal by studs, and is sealed by nitrile rubber pad between two ring flanges.
Air accumulator is used for storing and the gas of cylinder equal pressure, supplements the gas needed for cylinder upper and lower cavity indoor or gas of attracting deposit in real time
Gas unnecessary in cylinder, its material selection pressure vessel material Q345R, tank chamber entire body inner liner stainless steel 316L.For adapting to cylinder
Tolerance adjust needs and ensure the uniform property that cylinder is loaded, be evenly arranged even numbers air accumulator, each air accumulator outside cylinder
Structure the most identical with size.Each air accumulator includes upper and lower double-seal head and tank body three part, and upper cover and low head all use ellipse
Circular configuration, and be fixed with tank body by circumferential weld；It is machined with on tank wall with cylinder wall co-located with the screwed hole of caliber,
By installing regulation valve, it is achieved air accumulator is integrated with cylinder, and the intake and exhaust amount of air accumulator can be controlled by regulation valve；
Meanwhile, the top regulation valve of odd number air accumulator cuts out and bottom regulation valve is opened, to ensure itself and lower chamber of air cylinder room UNICOM, and even
The top regulation valve of number air accumulator is opened and bottom regulation valve cuts out, to ensure itself and upper chamber of air cylinder room UNICOM；The bottom of low head
It is designed with bleeder valve, the foreign material of deposition in discharging air accumulator.
Upper guide and piston cylinder remain point cantact to realize radially-directed effect, it include adjusting end cap, SDeflector and on
Guide way, its main material selection Stainless steel 316 L.Adjust the diameter internal diameter less than cylinder block on end cap outer ring surface top, and
The bottom of outer ring surface is machined with external screw thread；Its inner ring surface top constitutes loopful rectangular recess with piston cylinder outer wall, is used for placing interior bullet
Spring also realizes the location of inner spring lower end, and inner ring surface bottom then uses taper seat, to regulate the radial distance of SDeflector, it is ensured that
SDeflector remains point cantact with the outer ring surface of piston cylinder.Upper guide way use ladder rotary structure, its outer ring surface top with
Cylinder block wall constitutes loopful rectangular recess, for placing outer spring and realizing the location of outer spring lower end, and in the middle part of outer ring surface
Diameter equal to the internal diameter of cylinder block, and and cylinder between use matched in clearance, outer ring surface bottom realizes upper guide by external screw thread
Location on seal top.Upper guide way inner ring surface top is coupled with adjusting end cap by internal thread, sets in the middle part of inner ring surface
There is scrobicular ring, for positioning evenly distributed spheroidal SDeflector, the material selection bearing steel of SDeflector, and the bottom of inner ring surface is adopted
With taper seat, in it, place the filler identical with seal.Being drilled with class " L " shape runner in upper guide way, wherein sprue is vertical
Arranging and caliber is relatively big, and secondary flow road is in tilted layout horizontal by certain angle, lubricating oil sprays into via auxiliary runner exit and leads
In the toroidal cavity between body and piston cylinder.
Seal use combined stuffing seal structure realize the sealing between cylinder and piston cylinder, it include sealing gland, filling body,
Sealing drum, sealing screw and rectangular seal, its main material selection Stainless steel 316 L.Sealing drum top is provided with ring flange and leads to
Crossing stud and seal is fixed on the bottom of cylinder, its underpart is designed with the most evenly distributed boss, in boss
Being drilled with the runner of arranged crosswise, flow channel entry point is coupled with sealing screw by screw thread, it is achieved the sealing of lubricating oil in runner.Sealing drum
Inner ring surface bottom is machined with loopful groove, lower guider and sealing drum by the rectangular seal in compression pocket after thread connection,
Rectangular seal produces radial compensation power and auxiliary packing body seals.Sealing gland uses chunkization design, each sealing to press
Lid uses column-shaped barrel structure, and its external diameter is equal to inner ring surface diameter and the two employing matched in clearance, the sealing gland inner ring of sealing drum
The bottom in face uses the taper seat identical with upper guide, places filling body, the thus filler in upper guide, sealing pressure in it
Filling body in lid realizes the static seal between cylinder and piston cylinder together with the rectangular seal in sealing drum；In each sealing gland
Being drilled with the runner identical with upper guide, the axis of its sprue coincides with the sprue axis of upper guide and sealing drum, and
Parallel with the secondary flow road of upper guide and sealing drum in secondary flow road, it is ensured that upper guide, seal and lower between guider and piston cylinder
Toroidal cavity in be full of lubricating oil all the time, to realize the lubrication between cylinder and piston cylinder and movable sealing.
Lower guider and piston cylinder remain that linear contact lay, to realize radially-directed effect, and combines upper guide and makes the axle of piston cylinder
Line coincides with cylinder-bore axis all the time, at utmost reduces the friction between piston cylinder and cylinder.Lower guider includes bottom end cover, leads
To roller and lower guide way, its main material selection Stainless steel 316 L.The surrounding of bottom end cover has been evenly arranged bolt hole, and passes through
Tight fixed bolt couples with lower guide way.Lower guide way uses tube structure, and the junction of its inner ring surface upper and lower end parts is provided with edge
The circular cone apertures bosses that circumferencial direction is evenly arranged, realizes location in the upper conical surface of molgogger embeds this boss.Molgogger
Material selection bearing steel, and the column construction using two ends to be taper seat, along the uniform vertical arrangement of lower guide way inner ring surface, by
This molgogger remains linear contact lay with the outer ring surface of piston cylinder.
Piston cylinder is by the compression of the upper and lower gas to chamber of cylinder or expands and the active force that applied of inside and outside telescopic spring, automatically adjusts
Whole radial displacement, it is formed by positioning nut, piston, piston lining, outer cylinder body and inner barrel.Piston and the material of inside and outside cylinder
Matter selects calorific intensity and wearability is higher and cast iron that linear expansion coefficient is relatively low, and piston face is coated with tin protective layer, and piston is by gas simultaneously
Cylinder is separated into upper and lower two chambers, and the air pressure in upper chamber is less than the air pressure of bottom chamber, and its difference is used for keeping at the beginning of interior outer spring
Begin to be in free state.Piston uses the full ring body structurc of ring wall hollow, and its outer ring surface carries out retrofit, and with in cylinder body
Surface engagement constitutes moving sets, is machined with the rectangular recess of equidistant hierarchal arrangement on outer ring surface simultaneously, and groove is divided into sipes and narrow
Groove, and sipes and narrow slot interlaced arrangement, sipes embedded piston lining and be full of lubricating oil in narrow slot, to reduce between cylinder and piston
Friction.Piston ring wall outer ring surface bottom constitutes loopful rectangular recess with cylinder block wall, is used for placing outer spring and realizing outer bullet
The location of spring upper end；And inner ring surface is provided with ring-shaped clip, the internal thread on clip realizes coupling between piston with outer cylinder body, inner ring
Basifacial constitutes loopful rectangular recess with the outer wall of outer cylinder body, for placing inner spring and realizing the location of inner spring upper end, thus
Interior outer spring is arranged between cylinder and piston cylinder from inside to outside, and interior outer spring is oppositely oriented, to balance mutual radial direction
Active force.Piston lining is used for alleviating the friction between piston and cylinder further, and its material selection Ni (nickel)-resist uses cross section
For the full loop configuration of rectangle, piston lining embedding piston sipes is interior and its outer ring surface diameter is slightly larger than piston external diameter.Outer cylinder body and
Inner barrel all uses cylindrical barrel, it is achieved air accumulator is integrated with cylinder and piston cylinder, and the annular space that two cylinders are constituted is used
Make the passage of lower chamber of air cylinder room supply, and the passage that supplies as upper chamber of air cylinder room of runner of inner barrel central authorities.Outer cylinder body upper and lower two
End seal is closed, and its outer wall carries out retrofit, and top is coupled with location nut by external screw thread, and nut bottom, location embeds piston
Inner ring surface and its upper surface is concordant with the upper end of outer cylinder body, it is achieved piston locking on outer cylinder body.Outer cylinder body upper wall is machined with circle
Shape eyelet, lower wall is provided with turbination blind hole, and is machined with the taper eyelet of hierarchal arrangement on outer wall, every layer of eyelet circumferentially side
To being evenly arranged, upper strata eyelet is less than the bottom face of piston on vertical, and lower floor's eyelet is put down with air accumulator regulation valve place disc
Together；And thin in thick outside eyelet, lower chamber of air cylinder room the gas entered in inside and outside cylinder annular space is had certain compression supercharging
Effect.Inner barrel upper end fluting and lower end closed, and its upper surface is concordant with outer cylinder body, inner barrel lower end use the rounding conical surface and
Outer cylinder body lower wall positions, and uses interference fit to realize the fixing of inner barrel between upper end and outer cylinder body eyelet.Inner barrel interior
Anchor ring uses the upper coarse and lower fine structure that the rounding conical surface and the face of cylinder combine, to facilitate the gas in automatic inflating device device to pass through piston cylinder
Enter upper chamber of air cylinder room smoothly, the gas entered in piston cylinder by upper chamber of air cylinder room is had certain compression pressurization simultaneously.
Centralizer realizes being flexible coupling the follow-up centering of device, makes cylinder and piston cylinder remain concentric, it is to avoid piston cylinder occurs partially
Reduction is damaged, and it includes centering spheroid, centering gland and centering body.The cast iron that the material selection of centering spheroid is identical with piston,
Using the structure that cylinder combines with spheroid, upper post body diameter less than outer cylinder body external diameter and realizes centralizer and piston by welding
Connection between Tong, lower spherical surface grinding processes and is machined with the loopful liquid bath of hierarchal arrangement, is full of lubricating oil in each liquid bath, and
Ball interior is drilled with taper circular hole, to avoid centering spheroid stress concentration.The material selection of centering gland and centering body is stainless
Steel 316L, the sphere on its top is both needed to carry out retrofit.Centering gland top is drilled with the rounding conical surface, conical surface small end disc diameter
More than the external diameter of centering spheroid top cylinder, the tuningout angle of the device that is flexible coupling with guarantee, and its underpart is by internal thread and centering
Body couples.Centering body is flexible coupling by flange realization, and the deep water platforms such as device and floating are tweendeck to be fixed, centering simultaneously
The sphere of gland and centering body upper part is in the same centre of sphere, and all constitutes revolute pair with centering spheroid matched in clearance, right to ensure
Middle spheroid is in the intrinsic free degree of centering gland and centering, and its underpart is drilled with the taper seat being connected with sphere, it is simple at any time
Make-up oil.
Automatic inflating device device includes ball valve, pressure-reducing valve, magnetic valve, safety valve, air bleeding valve and pipe fitting, and its source of the gas directly uses deep water
The instrument supply gas of platform synergic system, is connected to bottom piston cylinder outer cylinder body by ball valve, and is connected to piston cylinder by ball valve and pressure-reducing valve
Bottom inner barrel, simultaneously automatically control the air bleeding valve on pipeline through magnetic valve, it is achieved automatic inflating device or close gas, with maintain cylinder and
Air demand in air accumulator, and ensure that the air pressure of upper chamber of air cylinder indoor is consistently lower than lower chambers.
What the present invention can reach has the technical effect that, the air accumulator of this device that is flexible coupling, with cylinder and the piston cylinder Trinity, possesses knot
The feature that structure is compact；Piston cylinder is by the compression of the upper and lower gas to chamber of cylinder or expands and the effect that applied of inside and outside telescopic spring
Power, common equilibrium platform oscillation load, thus automatically adjust radial displacement；Air accumulator is used for storing and the gas of cylinder equal pressure
Gas unnecessary in body, gas needed in real time supplementing cylinder upper and lower cavity indoor or cylinder of attracting deposit；Centralizer realizes being flexible coupling device
Follow-up centering, make cylinder and piston cylinder remain concentric, device for adjusting deviation completes the angle tuningout of cylinder and piston cylinder simultaneously,
Ensure that device for adjusting deviation upper surface remains level, it is to avoid piston cylinder generation eccentric wear；It is jointly real that upper guide combines lower guider
Existing radially-directed effect, makes the axis of piston cylinder coincide with cylinder-bore axis all the time；Seal uses combined stuffing to seal structure
Realize the sealing between cylinder and piston cylinder；Automatic inflating device device automatically controls the air bleeding valve automatic inflating device on pipeline or pass by magnetic valve
Gas, pressure safety valve realizes the urgent release of air pressure during superpressure dangerous working condition, and package unit is prone to dismounting, operation and maintenance.
Accompanying drawing explanation
Fig. 1 is the typical structure sketch supporting the pneumatic device that is flexible coupling of platform follow-up centering according to offshore drilling proposed by the invention.
Fig. 2 is that the structure diagram of device for adjusting deviation in the pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling.
Fig. 3 is that cylinder and the structure diagram of air accumulator in the pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling.
Fig. 4 is that guider and the top view of seal in the pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling.
Fig. 5 is that piston cylinder and the structure diagram of centralizer in the pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling.
Fig. 6 is the work flow sketch that the pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling.
1-device for adjusting deviation in figure, 2-cylinder, 3-air accumulator, 4-piston cylinder, 5-upper guide, 6-seal, under 7-
Guider, 8-centralizer, 9-automatic inflating device device, 10-upper bracket, 11-bearing cap, 12-cylindrical roller thrust bearing,
13-packing ring, 14-sleeve, 15-cross axle, 16-oiling groove, 17-plug screw, 18-undersetting, 19-pressure safety valve,
The mono-end socket of 20-, 21-cylinder body, 22-upper cover, 23-tank body, 24-regulates valve, 25-low head, 26-bleeder valve,
27-adjusts end cap, 28-SDeflector, the upper guide way of 29-, 30-sealing gland, 31-sealing drum, 32-filling body, and 33
-sealing screw, 34-rectangular seal, guide way under 35-, 36-molgogger, 37-bottom end cover, 38-positions nut,
39-piston, 40-piston serves as a contrast, 41-outer spring, 42-inner spring, 43-outer cylinder body, 44-inner barrel, 45-centering ball
Body, 46-centering gland, 47-centering body.
Detailed description of the invention
The present invention is further illustrated below in conjunction with the accompanying drawings, but the invention is not limited in following example.
In FIG, offshore drilling is supported the pneumatic device that is flexible coupling of platform follow-up centering by device for adjusting deviation 1, cylinder 2, air accumulator 3, is lived
Plug tube 4, upper guide 5, seal 6, lower guider 7, centralizer 8 and automatic inflating device device 9 form.This device that is flexible coupling
Linkage editor is, is first inserted in outer cylinder body the inner barrel of piston cylinder 4, and is welded in centralizer 8, successively by lower guider 7,
Seal 6 and upper guide 5 are inserted in the outer wall of the outer cylinder body of piston cylinder 4, and are realized triangular fixing by thread connection；
Then each air accumulator 3 is connected with cylinder 2, then device for adjusting deviation 1 is welded in cylinder 2；Then interior outer spring is put into cylinder 2
Piston is also connected to the top of outer cylinder body by lower chambers, then by stud by device for adjusting deviation 1, cylinder 2 and air accumulator 3 with seal
Body 6 couples；Finally automatic inflating device device 9 is connected to the bottom of piston cylinder 4 outer cylinder body and inner barrel.
In FIG, by fastening bolt and offshore drilling, the pneumatic device that is flexible coupling of follow-up centering assembled supports that platform trestle etc. joins
Connect thing to couple.When needs carry out drilling well or beat adjustment well operations, with offshore drilling, this device that is flexible coupling supports that platform couples thing
Hang deep water platforms such as being positioned floating, and be fixed with deep water platform between decks by fastening bolt, thus follow-up centering gas
The dynamic device that is flexible coupling realizes offshore drilling and supports the connection between platform and other deep water platforms.
In FIG, when the pneumatic device that is flexible coupling of follow-up centering is debugged, first, the whole device that is flexible coupling is carried out air-tight test；
Then, check whether the piston of piston cylinder 4 moves the most fluent in cylinder 2；Then, check that in device, pipeline system connects
Whether head has leakage, if unimpeded, and the switch of each pipeline valve is the most correct；Finally, the instrument of automatic inflating device device 9 is connected
Table source of the gas, checks whether source of the gas cleans, is dried.
In FIG, when the pneumatic device that is flexible coupling of follow-up centering purges, open on regulation valve, the air accumulator 3 on cylinder 2
Ball valve on bleeder valve and automatic inflating device device 9 and pressure-reducing valve, then open the air bleeding valve of automatic inflating device device 9 and pass through pipeline successively
In piston cylinder 4, cylinder 2 and air accumulator 3, inject instrument supply gas, finally close air bleeding valve and the air accumulator 3 of automatic inflating device device 9
On bleeder valve.
In FIG, when the pneumatic device that is flexible coupling of follow-up centering carries out tonifying Qi, the magnetic valve of automatic inflating device device 9 automatically controls on pipeline
Air bleeding valve, and realized the automatic inflating device of cylinder 2 lower chambers by ball valve, realize cylinder 2 upper chamber by ball valve and pressure-reducing valve
Automatic inflating device, cylinder 2 air pressure recover after tonifying Qi complete, by magnetic valve control air bleeding valve self-closing gas.
In fig. 2, with offshore drilling, device for adjusting deviation 1 supports that platform trestle etc. couples thing and couples by upper bracket 10.Device for adjusting deviation
1 when installing, and first, is inserted by cross axle 15 in the support of upper bracket 10 and undersetting 18, then, loads thrust circle
Post roller bearing 12 is also positioned by sleeve 14 and packing ring 13, finally, builds bearing cap 11.Device for adjusting deviation 1 is adjusted
Time partially, cross axle 15 is rotated by the cylindrical roller thrust bearing 12 in upper bracket 10 and undersetting 18, it is achieved platform
Cylinder 2 and piston cylinder 4 tuningout at any angle when vibration or drift, and keep device for adjusting deviation 1 upper end surface in level.Adjust
When device 1 needs oiling partially, turning on plug screw 17, grease gun injects profit by oiling groove 16 in upper bracket 10 and undersetting 18
Lubricating oil.
In figure 3, cylinder 2 is welded together by single end socket 20 with device for adjusting deviation 1；When superpressure dangerous working condition occurs, pass through
The pressure safety valve 19 of single end socket 20 outer rim promptly discharges air pressure；The tune that cylinder 2 upper chamber is arranged by cylinder body 21 higher slice
Joint valve 24 and even number air accumulator 3 UNICOM, and cylinder 2 lower chambers passes through regulation valve 24 and the odd number of cylinder body 21 bottom layered arrangement
Air accumulator 3 UNICOM.The gas of air accumulator 3 is stored in the cavity that upper cover 22, tank body 23 and low head 25 are constituted, gas storage
Foreign material in tank 3 are discharged by the bleeder valve 26 bottom low head 25.
In figure 3, the number that air accumulator 3 opens and closes by adjusting regulation valve 24 controls to be in the air accumulator of gas storage state
3 quantity；The quantity of all odd and even number air accumulators 3 is identical, is guaranteed at the odd and even number air accumulator 3 of gas storage state simultaneously
Total quantity identical and position is uniform, to ensure the uniform property of cylinder 2 internal gas pressure；It addition, by the number adjusting air accumulator 3
The aperture of amount and regulation valve 24 controls the difference tolerance supplemented needed for cylinder 2.
Guider 5 combines lower guider 7 and completes the piston cylinder 4 guide effect in cylinder 2 together, to protect in fig. 4, the upper
The axis of card cylinder 2 is in coincidence status the most all the time with the axis of piston cylinder 4.When upper guide 5 is installed, first
First it is directed to ball 28 and puts into the scrobicular ring of guide way 29 inner ring surface, build adjustment end cap 27 the most again and regulate SDeflector 28
Radial distance, be eventually led to holding point between ball 28 with piston cylinder 4 and contact.When lower guider 7 is installed, first will lead
Embed in the boss of lower guide way 35 inner ring surface to roller 36, build bottom end cover 37 the most again to have good positioning molgogger 36,
It is eventually led between roller 36 and piston cylinder 4 keep linear contact lay.
Rectangle bottom filler in guide way 29, the filling body 32 in sealing gland 30 and sealing drum 31 in fig. 4, the upper
The static seal that sealing ring 34 collectively constitutes, in conjunction with between upper guide 5, sealing gland 30 and lower guider 7 and piston cylinder 4
Movable sealing, the sealing between common guarantee cylinder 2 and piston cylinder 4.When needing oiling, turn on sealing screw 33, grease gun
Lubricating oil is injected by sealing drum 31, sealing gland 30 and the sprue of upper guide 5 and secondary flow road.
In Figure 5, cylinder 2 upper and lower cavity indoor gas pressurized or expansion and outer spring 41 and the flexible active force of inner spring 42
Put on piston 39, outer cylinder body 43 and the end face of inner barrel 44, the movement then constituted with cylinder 2 by piston 39 together
Pair realizes moving radially in real time of piston cylinder 4, is finally completed the device that is flexible coupling and automatically adjusts radial displacement.Piston 39 sipes is embedded
Piston lining 40 fills lubricating oil in combining narrow slot, can effectively reduce the friction between piston 39 and cylinder body 21.Inner barrel 44,
Outer cylinder body 43 and cylinder body 21 are by inner and be sequentially arranged outward, and wherein the runner of inner barrel 44 is that the upper chamber of cylinder 2 supplies,
And the lower chambers that annular space is cylinder 2 that inner barrel 44 and outer cylinder body 43 are constituted supplies, outer cylinder body 43 and cylinder body
The annular space of 21 constitutes the lower chambers of cylinder 2, is sequentially placed inner spring 42 and outer spring 41 in lower chambers from inside to outside.
In Figure 5, gap is used to join between spherome surface and the sphere of centering gland 46 and centering body 47 of centering spheroid 45
Close, it is ensured that centering spheroid 45 can be freely rotatable, the follow-up centering of the device that is flexible coupling when being achieved in platform vibration or drift about, make gas
Concentric is remained between cylinder 2 and piston cylinder 4.
In figure 6, offshore drilling supports that the trestle etc. of platform couples thing by follow-up centering pneumatic be flexible coupling device and other floating etc.
Deep water platform completes to couple, under the common effect of the piston 39 of piston cylinder 4 lower chamber gas on the cylinder 2, in cylinder body 21
Being in poised state, outer spring 41 is in free elongation state together with inner spring 42 simultaneously.Vertical shaking is carried out at deep water platform
In the case of swinging, this poised state is broken, and when deep water platform upwards vibrates, piston cylinder 4 moves up along cylinder 2 therewith,
Gas in compression cylinder 2 upper chamber, even number air accumulator 3 and inner barrel 44, and cylinder 2 bottom chamber gas occurs the most swollen
Swollen, outer spring 41 is stretched together with inner spring 42 simultaneously, and the total force that piston cylinder 4 is directed downward in moving more is come
The biggest, final complete equipilibrium falls the oscillation load that deep water platform is applied, and forces the piston 39 of piston cylinder 4 to move down, again
It revert at the poised state of cylinder 2 cylinder body 21；When deep water platform vibrates downwards, piston cylinder 4 therewith along cylinder 2 to moving down
Dynamic, in compression cylinder 2 lower chambers, odd number air accumulator 3 and inner barrel 44 and outer cylinder body 43 annular space gas, and gas
Cylinder 2 epicoele indoor gas relative expansion, outer spring 41 is compressed together with inner spring 42 simultaneously, and piston cylinder 4 is subject in moving
Direction total force upward is gradually increased, and final complete equipilibrium falls the oscillation load that deep water platform is applied, and forces piston cylinder 4
Piston 39 move up, and be again attributed to the poised state of cylinder 2 cylinder body 21, thus this device that is flexible coupling completes automatically to adjust
Radial displacement.
In figure 6, when the drift of the deep water platform occurred level such as floating or deflection, centering spheroid 45 is in centering gland 46 and centering
Rotating corresponding angle, θ with skew direction in body 47, cylinder 2, air accumulator 3 also enter with centralizer 8 together with piston cylinder 4
Row follow-up centering, during being somebody's turn to do, cylinder 2 and piston cylinder 4 remain concentric, it is to avoid glance off abrasion；Device for adjusting deviation simultaneously
The cross axle 15 of 1 rotates identical angle, θ by the cylindrical roller thrust bearing 12 of upper bracket 10 and undersetting 18 with cylinder 2,
Device for adjusting deviation 1 upper surface and centralizer 8 lower surface is thus kept to remain level, it is achieved cylinder 2 and piston cylinder 4 are arbitrarily angled
Tuningout.
Claims (10)
1. the pneumatic device that is flexible coupling of platform follow-up centering is supported in an offshore drilling, it is characterised in that:
One device for adjusting deviation；Described device for adjusting deviation completes the angle tuningout of cylinder and piston cylinder, upper bracket structure identical with undersetting employing and
Arranging in decussation, its support all uses U-shaped structure；Cross axle profile in " ten " font, the axle journal of each end successively with
Cylindrical roller thrust bearing in upper bracket and undersetting dead eye coordinates；
One cylinder；Gas in described cylinder is by compression or expands balanced oscillator load, and top uses oval single end socket,
Being provided with pressure safety valve at single end socket outer rim, the upper and lower of cylinder wall is machined with the sealing of equidistant layered arrangement respectively
Pipe screwed hole, the inner surface of cylinder body needs to be ground processing, and the ring flange of its underpart is coupled with seal by studs；
One air accumulator；Even numbers air accumulator it is evenly arranged, by installing regulation valve, it is achieved air accumulator closes with cylinder outside described cylinder
Being integrated, the top regulation valve of odd number air accumulator cuts out and bottom regulation valve is opened, to ensure itself and lower chamber of air cylinder room UNICOM, and
The top regulation valve of even number air accumulator is opened and bottom regulation valve cuts out, to ensure itself and upper chamber of air cylinder room UNICOM；
One upper guide；Described upper guide and piston cylinder remain point cantact, adjust end cap inner ring surface bottom and use taper seat,
To regulate the radial distance of SDeflector；It is provided with scrobicular ring in the middle part of upper guide way inner ring surface, guides for positioning evenly distributed spheroidal
Ball, and bottom uses taper seat, places the filler identical with seal in it, is drilled with class " L " shape runner in upper guide way；
One seal；Described seal uses combined stuffing to seal structure, filling out in filler in upper guide, sealing gland
Material body realizes the static seal between cylinder and piston cylinder together with the rectangular seal in sealing drum, upper guide, seal and under lead
All the time lubricating oil it is full of, to realize the lubrication between cylinder and piston cylinder and movable sealing in the toroidal cavity between device and piston cylinder；Close
Sealed cover uses chunkization design, is drilled with the runner identical with upper guide in each sealing gland；
Guider once；Described lower guider and piston cylinder remain linear contact lay, and combine upper guide and make the axis of piston cylinder
All the time coinciding with cylinder-bore axis, the junction of lower guide way inner ring surface upper and lower end parts is provided with circular cone evenly distributed in the circumferential direction
Apertures bosses, realizes location in the upper conical surface of molgogger embeds this boss；
One piston cylinder；Described piston cylinder adjusts radial displacement automatically, and cylinder is separated into upper and lower two chambers, upper chamber by piston
Interior air pressure is less than the air pressure of bottom chamber；Piston uses the inner surface of the full ring body structurc of ring wall hollow, its outer ring surface and cylinder body
Coordinate and constitute moving sets；Interior outer spring is arranged between cylinder and piston cylinder from inside to outside, and interior outer spring is oppositely oriented；Live
Plug lining embedding piston sipes is interior and its outer ring surface diameter is slightly larger than piston external diameter；Outer cylinder body and inner barrel all use cylindrical barrel, real
Existing air accumulator is integrated with cylinder and piston cylinder, and the annular space that two cylinders are constituted is used as the passage of lower chamber of air cylinder room supply；
One centralizer；Described centralizer realizes being flexible coupling the follow-up centering of device, and centering spheroid uses the structure that cylinder combines with spheroid
Making, lower spherical surface grinding processes and is machined with the loopful liquid bath of hierarchal arrangement；Centering gland and the sphere of centering body upper part
Being both needed to carry out retrofit, its sphere is in the same centre of sphere simultaneously, and all constitutes revolute pair with centering spheroid matched in clearance；
One automatic inflating device device；Described automatic inflating device device is connected to bottom piston cylinder inner barrel by ball valve and pressure-reducing valve, through magnetic valve certainly
Air bleeding valve on dynamic control piper, it is achieved automatic inflating device or pass gas, it is ensured that the air pressure of upper chamber of air cylinder indoor is consistently lower than lower chambers.
The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling the most according to claim 1, it is characterised in that: described
The upper bracket of device for adjusting deviation realizes device for adjusting deviation by bolt and supports that with offshore drilling platform couples the connection of thing, and the base of undersetting leads to
Cross welding to be fixed with cylinder.
The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling the most according to claim 1 and 2, it is characterised in that:
The both sides of the support of described upper bracket and undersetting are machined with the dead eye being arranged symmetrically with, thick interior thin, wherein in pore outside dead eye
The sleeve of embedding matched in clearance therewith, is sequentially arranged biserial cylindrical roller thrust bearing and packing ring in gross porosity, it is achieved cross axle rotates merit
The axially loaded of cross axle is balanced while energy；
The boss external diameter of described device for adjusting deviation bearing cap is less than the external diameter of cylindrical roller thrust bearing inner ring；
It is designed with oil filler point evenly distributed in the circumferential direction on the cylinder end wall of described device for adjusting deviation oiling groove.
The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling the most according to claim 1, it is characterised in that: described
Every layer of pipe screwed hole of cylinder block wall is the most evenly distributed；
Described pressure safety valve when cylinder internal gas pressure exceedes the dangerous working condition of limit value, automatic deflation and discharge pressure；
The structure of described air accumulator is the most identical with size, tank wall is machined with cylinder wall co-located with the screwed hole of caliber, leads to
Overregulate valve and can control the intake and exhaust amount of air accumulator.
The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling the most according to claim 1, it is characterised in that: described
The diameter internal diameter less than cylinder block adjusting end cap outer ring surface top of upper guide, its inner ring surface top and piston cylinder outer wall structure
Become loopful rectangular recess, for placing inner spring and realizing the location of inner spring lower end；
Described upper guide way outer ring surface top constitutes loopful rectangular recess with cylinder block wall, outside being used for placing outer spring and realizing
The location of lower spring end, and outer ring surface mid diameter is equal to the internal diameter of cylinder block, and and cylinder between use matched in clearance；
In described upper guide way, the vertical layout of sprue and caliber are relatively big, and secondary flow road is in tilted layout horizontal by certain angle,
Lubricating oil sprays in the toroidal cavity between upper guide way and piston cylinder via auxiliary runner exit.
The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling the most according to claim 1, it is characterised in that: described
The sealing drum inner ring surface bottom of seal is machined with loopful groove, and lower guider and sealing drum are by compression pocket after thread connection
Rectangular seal, rectangular seal produce radial compensation power and auxiliary packing body seals；
The external diameter of described sealing gland is equal to inner ring surface diameter and the two employing matched in clearance of sealing drum, sealing gland inner ring surface
Bottom uses the taper seat identical with upper guide, places filling body in it；
In described sealing gland, the axis of sprue coincides with the sprue axis of upper guide and sealing drum, and secondary flow road is with upper
The secondary flow road of guider and sealing drum is parallel.
The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling the most according to claim 1, it is characterised in that: described
The molgogger of lower guider uses two ends to be the column construction of taper seat, along the uniform vertical arrangement of lower guide way inner ring surface.
The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling the most according to claim 1, it is characterised in that: described
Being machined with the rectangular recess of equidistant hierarchal arrangement on the piston outer ring surface of piston cylinder, groove is divided into sipes and narrow slot, and sipes and
Narrow slot interlaced arrangement, the embedded piston of sipes serves as a contrast and is full of lubricating oil in narrow slot；
Described piston ring wall outer ring surface bottom constitutes loopful rectangular recess with cylinder block wall, outside being used for placing outer spring and realizing
The location of spring upper end；Inner ring surface bottom constitutes loopful rectangular recess with the outer wall of outer cylinder body, in being used for placing inner spring and realizing
The location of spring upper end；
The material selection Ni (nickel)-resist of described piston lining, the full loop configuration using cross section to be rectangle.
9. support the pneumatic device that is flexible coupling of platform follow-up centering according to the offshore drilling described in claim 1 or 8, it is characterised in that:
The upper and lower closed at both ends of outer cylinder body of described piston cylinder, nut bottom, location embeds the upper of piston inner ring surface and its upper surface and outer cylinder body
Hold level with both hands neat；Being machined with the taper eyelet of hierarchal arrangement on the outer wall of outer cylinder body, upper strata eyelet is less than the bottom face of piston on vertical,
And lower floor's eyelet is concordant with air accumulator regulation valve place disc and thick interior thin outside eyelet；
Slot and lower end closed in the inner barrel upper end of described piston cylinder, and its upper surface is concordant with outer cylinder body, and inner barrel lower end uses
The rounding conical surface positions with outer cylinder body lower wall, and uses interference fit to realize the fixing of inner barrel between upper end and outer cylinder body eyelet；
The inner ring surface of described inner barrel uses the upper coarse and lower fine structure that the rounding conical surface and the face of cylinder combine；
The passage that the runner of the inner barrel central authorities of described piston cylinder supplies as upper chamber of air cylinder room.
The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling the most according to claim 1, it is characterised in that: institute
The centering spheroid upper post body diameter stating centralizer is less than outer cylinder body external diameter the connection realizing between centralizer and piston cylinder by welding
Connect, in each liquid bath on lower spherical surface, be full of lubricating oil, and ball interior is drilled with taper circular hole；
Described centering gland top is drilled with the rounding conical surface, and conical surface small end disc diameter is more than the external diameter of centering spheroid top cylinder；
Described centering body is flexible coupling by flange realization, and the deep water platforms such as device and floating are tweendeck to be fixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410476449.5A CN104265227B (en) | 2014-09-17 | 2014-09-17 | The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling |
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| CN201410476449.5A CN104265227B (en) | 2014-09-17 | 2014-09-17 | The pneumatic device that is flexible coupling of platform follow-up centering is supported in offshore drilling |
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| CN104265227B true CN104265227B (en) | 2016-08-24 |
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| CN105971544B (en) * | 2016-07-14 | 2019-03-29 | 哈尔滨理工大学 | Trailing type compensates polish rod seal device automatically |
| CN107524420B (en) * | 2017-09-05 | 2019-04-30 | 青岛理工大学 | Follow-up centering two-stage has lever system sealing device |
| CN107916911B (en) * | 2018-01-12 | 2024-04-02 | 中石化四机石油机械有限公司 | Underwater robot interface with indication and locking mechanism |
| CN108408598B (en) * | 2018-03-15 | 2019-05-14 | 中国石油大学(华东) | A kind of underwater air-cylinder type dynamic equilibrium lifting operation device |
| CN117262493B (en) * | 2023-11-23 | 2024-01-26 | 内蒙古东景生物环保科技有限公司 | Integrated explosion-proof storage tank |
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| US7255517B2 (en) * | 2004-05-28 | 2007-08-14 | Deepwater Marine Technology L.L.C. | Ballasting offshore platform with buoy assistance |
| CN101793000B (en) * | 2010-01-28 | 2013-01-23 | 中国海洋石油总公司 | Hydraulic multifunctional delivery trestle of multifunctional self-elevating supporting platform for ocean oil field |
| CN101775776A (en) * | 2010-01-28 | 2010-07-14 | 中国海洋石油总公司 | Marine oil field multifunctional self-elevating supporting platform pedestrian hydraulic telescopic trestle |
| CN202064336U (en) * | 2011-04-08 | 2011-12-07 | 中国海洋石油总公司 | Trestle connecting device between offshore platforms |
| CN102635319A (en) * | 2012-04-12 | 2012-08-15 | 宝鸡石油机械有限责任公司 | Direct hydraulic cylinder type offshore drilling riser tensioning system |
| CN204126590U (en) * | 2014-09-17 | 2015-01-28 | 中国石油大学(华东) | The pneumatic device that is flexible coupling of offshore drilling supporting platform follow-up centering |
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