CN105756027B - A kind of steel buoyancy tank ice resistant device suitable for polar region ice formation semisubmersible platform - Google Patents

A kind of steel buoyancy tank ice resistant device suitable for polar region ice formation semisubmersible platform Download PDF

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Publication number
CN105756027B
CN105756027B CN201610144120.8A CN201610144120A CN105756027B CN 105756027 B CN105756027 B CN 105756027B CN 201610144120 A CN201610144120 A CN 201610144120A CN 105756027 B CN105756027 B CN 105756027B
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buoyancy tank
ice
steel buoyancy
steel
lid
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CN105756027A (en
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谷家扬
邓炳林
蒋志勇
姚震球
刘为民
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Jiangsu University of Science and Technology
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Jiangsu University of Science and Technology
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B17/00Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/0017Means for protecting offshore constructions
    • E02B17/0021Means for protecting offshore constructions against ice-loads

Abstract

The invention discloses a kind of steel buoyancy tank ice resistant device suitable for polar region ice formation semisubmersible platform, including the fixed platform being fixed on spud leg, some groups of hydraulic permanent-magnetic sucker hoisting apparatus are installed below the fixed platform, the split type steel buoyancy tank anti-ice body of anti-ice is provided with below hydraulic permanent-magnetic sucker hoisting apparatus, the side of the split type steel buoyancy tank anti-ice body is wedge shape.The steel buoyancy tank ice resistant device suitable for polar region ice formation semisubmersible platform of the present invention, enclosed steel buoyancy tank relies on inside stuffing to produce buoyancy, there is no rigors to watertightness, reduce the manufacture difficulty of steel buoyancy tank, avoid, similar to strict closed its watertightness of steel buoyancy tank is typically needed once the phenomenon for being destroyed seabed of just sinking occurs, further increasing the reliability of split type steel buoyancy tank ice resistant device.

Description

A kind of steel buoyancy tank ice resistant device suitable for polar region ice formation semisubmersible platform
Technical field
The present invention relates to the steel buoyancy tank ice resistant device suitable for polar region ice formation semisubmersible platform, belongs to ocean engineering technology neck Domain.
Background technology
Reduced increasingly with the minable oil and gas reserves in landing field and polar region navigation channel continually developed, polar region ice formation marine site into The focus marine site paid high attention to for petrol resources exploitation business.Semisubmersible platform is because its own has the special feature that, especially by each oil The favor of gas developer, it is one of standby just as extra large frock in great demand at present.But to carry out safety in polar region ice formation marine site Reliably drillng operation must just solve threat of the semisubmersible platform from floating ice.
Ice formation marine site, floating ice is more, and ice sheet is thick, wind, wave, stream driving under, fairly large movement will occur for sea ice.Sea The mobile ocean engineering structure that can be built to ice formation of ice acts power, will likely cause marine structure in the course of time Fatigue rupture.For the ocean platform of routine, its upright spud leg is often directly extruded by floating ice, impacted, and works as this punching Hit in the frequency spectrum of power effect and include or close to the steady-state vibration that can cause platform during works natural vibration period again, so as to accelerate platform Fatigue failure and influence the normal life and work of personnel on platform, at the same time can also cause the mistake of pertinent instruments on platform Effect, the final operation life-span for reducing platform.
At present, the ice resistant device of diversified forms is successively worked out both at home and abroad, some ice resistant devices are fixed on spud leg, are had It can be lifted a bit by jacking system such as gear mesh form, roller form along spud leg, also some are set with fence type around platform Fixed ice resistant device etc..By the peculiar shape in the outer surface of ice resistant device, ice raft can be made to be changed into bending from extruding destruction Destroy, reach open ice, the effect of trash ice.But existing most of fixed ice resistant devices are running into ice layer thickness increase, knot In the ice condition serious periods such as speed of icing quickening, the accumulation of trash ice and the icing quick again of trash ice, its anti-ice effect will be big It is big to weaken, or even lose anti-ice effect.In addition, existing can be along the ice resistant device that spud leg lifts in the process of running, due to tooth Mesh form is taken turns repeat impact backgear tooth form is easily deformed, the roller of roller form can only be run with single-degree-of-freedom, rolling Ball inside wheel easily deforms after the shock of floating ice, and both reliabilities are poor, and lowering or hoisting gear pole under sea water intrusion Easily failure, the maintenance load in later stage are larger.For semisubmersible platform, because spud leg size is larger, if with reference to small size The single integral conical ice resistant structure of spud leg Platform Designing is then difficult to control and installing/dismounting, and existing semi-submersible type need to be put down The spud leg design of platform carries out larger change.
The content of the invention
Goal of the invention:In order to overcome the deficiencies in the prior art, the present invention provides a kind of suitable for polar region ice formation half The steel buoyancy tank ice resistant device of submersible platform, itself can provide enough buoyancy, under common ice regime, it is possible to achieve adapt to water level Change, active anti-ice, good economy performance.
Technical scheme:A kind of in order to solve the above technical problems, steel suitable for polar region ice formation semisubmersible platform of the present invention Buoyancy tank ice resistant device, including the fixed platform being fixed on spud leg, the fixed platform lower section are provided with some groups of hydraulic permanent-magnetics Sucker hoisting apparatus, hydraulic permanent-magnetic sucker hoisting apparatus lower section is provided with the split type steel buoyancy tank anti-ice body of anti-ice, described split type The side of steel buoyancy tank anti-ice body is wedge shape.
Preferably, the hydraulic permanent-magnetic sucker hoisting apparatus includes plunger case, plunger, crane arm and permanent magnetic chuck, institute State plunger case to fix on the stationary platform, plunger is located in plunger case, and plunger is connected with crane arm, and crane arm connects with permanent magnetic chuck Connect.
Preferably, range sensor is installed on the permanent magnetic chuck.
Preferably, the split type steel buoyancy tank anti-ice body includes alternatively distributed positive back taper steel buoyancy tank and just four point one Circular table steel buoyancy tank, the positive back taper steel buoyancy tank and the four point of one circular table steel buoyancy tank that just fall are respectively connected with support, and adjacent stent leads to Cross bolt connection so as to connect positive back taper steel buoyancy tank and just fall four point of one circular table steel buoyancy tank;The split type steel buoyancy tank anti-ice body Permanent magnetic chuck effect steel plate is provided with below face permanent magnetic chuck.
It is described just to fall four point of one circular table preferably, the positive back taper steel buoyancy tank is provided with fixed guide or steady pin Steel buoyancy tank is provided with the steady pin being used cooperatively with positive back taper steel buoyancy tank or fixed guide.
Preferably, the positive back taper steel buoyancy tank includes the first epicone lid and first time cone lid, the first epicone lid and first Lower cone lid is symmetrical structure, and the section that the first epicone lid and first time cone cover is trapezoidal shape;The four point of one circular table steel that just falling floats Case is arc-shaped, and comprising the second epicone lid and second time cone lid, it is symmetrical structure that the second epicone lid and second time cone, which cover, on second The section of cone lid and second time cone lid is trapezoidal shape;First epicone lid and first time cone lid composition key groove for 45 ° extremely 65 °, the key groove that the second epicone lid and second time cone lid form is 45 ° to 65 °.
Preferably, the positive back taper steel buoyancy tank or/and just falling and being provided with level sensor in four point of one circular table steel buoyancy tank.
Preferably, the first epicone lid and the second epicone cover and are equipped with manhole.
Preferably, the positive back taper steel buoyancy tank or/and just fall is steeped filled with solid-state in four point of one circular table steel buoyancy tank Foam packing material.
Preferably, side is provided with several damping devices in the split type steel buoyancy tank anti-ice body.
The hydraulic permanent-magnetic sucker hoisting apparatus is in normally off under common sea ice ice regime.Reason is the split The displacement change of formula steel buoyancy tank anti-ice body is little, and drinking water change is little, and level sensor floats due to being fixed in split type steel In case anti-ice body on wall, its waterline position sensed is in the scope set during normally off.It is split type when SEA LEVEL VARIATION Steel buoyancy tank anti-ice body can rely on natural buoyancy effect to be moved up and down along spud leg, and certain thickness floating ice hits split type steel buoyancy tank and resisted Ice body will directly bend broken.
But when ice condition is quite serious, ice layer thickness increase, icing rate quickening, the accumulation of trash ice and trash ice are again Quick phenomena such as freezing, is possible to that the outer surface of split type steel buoyancy tank anti-ice body can be made by sea ice to be freezed, split type so as to add The displacement of steel buoyancy tank anti-ice body, cause its sinking certain position and lose former maneuverable anti-ice effect.It is now split type The drinking water of steel buoyancy tank anti-ice body is significantly increased, hydraulic permanent-magnetic sucker hoisting apparatus will receive the signal of water level sensor and by Start, when crane arm is moved downwardly to certain position, range sensor will pass on signal permanent magnetic chuck is opened sticking state, Range sensor will close simultaneously, and then plunger is lifted up driving crane arm so as to lift split type steel buoyancy tank anti-ice body, Hydraulic permanent-magnetic sucker hoisting apparatus will be provided by anti-ice body and the vertical of ice sheet crushed in lifting process.Dividing When the drinking water that body formula steel buoyancy tank anti-ice body is promoted to i.e. split type steel buoyancy tank anti-ice body after certain altitude reaches certain value, water level Sensor will be closed so that hydraulic permanent-magnetic sucker hoisting apparatus is closed, and permanent magnetic chuck discharges split type steel buoyancy tank anti-ice body.This When split type steel buoyancy tank anti-ice body deadweight be more than suffered buoyancy, move downward, again vertically add ice sheet by deadweight To crush, equilbrium position is finally fallen back to, its is recovered original anti-ice mobility.
The split type steel buoyancy tank anti-ice body four positive back taper steel buoyancy tanks as corresponding to square spud leg right-angle side are positive back taper I.e. just four point of one circular table steel buoyancy tank is passing through the positive inverted round stage steel buoyancy tank of four a quarters corresponding to steel buoyancy tank and spud leg right angle Nested type assembles, and each anti-ice chunk is closed stereo structure, passes through steady pin and steady pin between anti-ice chunk The nesting and bolt connection of set, ring flange the locking device such as are fitted and connected and carry out firm locking, ensure that when moving up and down each The synchronism of anti-ice chunk motion.
Each anti-ice chunk includes being enough the casing and solid state foam packing material for resisting floating ice shock.Steel buoyancy tank casing is The direct contact object that platform resistance floating ice hits, its stereochemical structure be positive back taper or positive reverse frustoconic, can be by the crowded of floating ice Crush and be badly changed into bending failure, effectively prevent direct effect of the floating ice to spud leg.Steel buoyancy tank casing uses low temperature resistant steel Plate weld is formed, and solid state foam filling access is offered on casing;Packing material is with water imbibition is low, compressibility is low, density The material of the characteristics such as small, low-temperature resistance such as ceramic foam material, polymeric foamed material etc., can provide enough buoyancy for casing. Each anti-ice chunk then can be mutually integrated and by the firm connection of locking device from floating on certain water surface around spud leg nesting Afterwards, it can also realize that split type anti-ice body swims in the water surface, keep certain drinking water.
Further, since each anti-ice chunk provides buoyancy using packing material, therefore to the seal of steel buoyancy tank There is no rigors, so as to reduce the manufacture difficulty of steel buoyancy tank, avoid similar typically needing strict closed its watertight of steel buoyancy tank Property once the destroyed phenomenon for just sinking seabed occurs, further increase the reliability of split type steel buoyancy tank ice resistant device.
The locking device includes bolt connection, ring flange, and closely each anti-ice chunk is carried out firm locking by connection etc., real Lock and be integral between existing split type each steel buoyancy tank chunk of anti-ice body, it is ensured that the synchronism moved up and down along the spud leg;
The vibration absorber, which includes being fixed in, just falls the vertical vibration reduction support part of four point of one circular table steel buoyancy tank inwall, vibration damping Element and rubber damping pad.Damping element has the characteristics such as corrosion-resistant, low temperature resistant, effectiveness in vibration suppression is obvious, is fixed in and steel buoyancy tank On the vibration reduction support part of welding, vertical rubber damping pad is connected with damping element outer surface.Entirely divide under common ice regime Body formula steel buoyancy tank anti-ice body is realized by natural buoyancy and moved up and down.It is split type steel buoyancy tank anti-ice body periphery in hard ice condition During by frozen in ice, it will be effected up by hydraulic permanent-magnetic sucker hoisting apparatus, it is then big with buoyancy by self gravitation Small relation is fallen after rise to equilbrium position.And both motions are all realized and spud leg with rubber damping pad in the sliding friction of spud leg surface Relative motion.Optional arch of structure of rubber damping pad etc. can bear more large impact power, the shape of buffering energy-absorbing vibration damping.In order to The sliding-frictional resistance of rubber blanket is reduced, certain smooth treatment is carried out on the spud leg surface being in contact with rubber blanket as used Impermeable seal processing, special coating that can reduce outer surface coefficient of friction etc. is smeared, while can also pacified on rubber blanket surface Harness has low-friction coefficient, low temperature resistant, wear-resisting material such as polytetrafluoroethylmaterial material.Vibration absorber is due to being provided with damping element And rubber damping pad, equivalent to double-layer vibration damping effect, between the rubber damping pad of the vibration absorber assembled and spud leg surface Gap is in 50mm to the vibration damping and vibration isolation function that vibration absorber between 100mm, is better achieved.
Beneficial effect:The steel buoyancy tank ice resistant device suitable for polar region ice formation semisubmersible platform of the present invention, have following excellent Point:
1st, because the main body of split type steel buoyancy tank anti-ice body is steel buoyancy tank casing, itself can provide enough buoyancy, Under common ice regime, it is possible to achieve adapt to SEA LEVEL VARIATION, active anti-ice, good economy performance;
2nd, enclosed steel buoyancy tank relies on inside stuffing to produce buoyancy, does not have rigors to watertightness, reduces steel The manufacture difficulty of buoyancy tank, avoid similar typically needing strict closed its watertightness of steel buoyancy tank once destroyed seabed of just sinking shows As occurring, the reliability of split type steel buoyancy tank ice resistant device is further increased;
3rd, when ice condition is quite serious, the outer surface of split type steel buoyancy tank anti-ice body may be freezed by sea ice, by hydraulic pressure forever Split type steel buoyancy tank anti-ice body can be lifted certain altitude by magnetic-disc hoisting apparatus, and split type steel buoyancy tank resists in lifting process Ice body produces vertical ice face active force to ice sheet, ice sheet can be smashed into destruction easily, and during falling, anti-ice body passes through self gravitation pair Ice sheet imposes vertical ice face effect, is smashed again, reaches the threat for effectively resisting severe ice regime to platform;
4th, due to the effect of hydraulic permanent-magnetic sucker hoisting apparatus, heap of the trash ice on split type steel buoyancy tank can effectively be reduced Phenomena such as product and ice raft adhere to;
5th, vibration absorber is provided with damping element and rubber damping pad, has double-layer vibration damping effect, is subtracted with being better achieved The vibration damping and vibration isolation function of vibrating device.The relative motion of ice resistant device and spud leg is in the sliding friction of spud leg surface with rubber damping pad What form was realized, after making certain processing, frictional resistance is small, and up and down motion is easily achieved;
6th, using steady pin and fixed the nested of guide, bolt connection, method between each chunk of split type steel buoyancy tank anti-ice body Blue disk is brought into close contact connection etc. and carries out firm locking, and the synchronism of each anti-ice chunk motion is ensure that when moving up and down, and easily In installation and removal.
Brief description of the drawings
Fig. 1 is the integrally-built front view of the present invention;
Fig. 2 is the integrally-built top view of the present invention;
Fig. 3 is Fig. 1 A-A sectional views;
Fig. 4 is Fig. 1 B-B sectional views;
Fig. 5 is Fig. 3 C-C sectional views;
Fig. 6 is Fig. 3 D-D sectional views;
Fig. 7 is the structure chart that split type positive back taper steel buoyancy tank 41 and positive back taper steel buoyancy tank 42 deploy along E-E section views in Fig. 2;
Fig. 8 is the partial enlarged drawing at Fig. 4 I position.
Embodiment
As shown in Figures 1 to 8, the present invention is a kind of split type steel buoyancy tank anti-ice suitable for polar region ice formation semisubmersible platform Device.It mainly includes the fixed platform 2 for being fixed in the certain position of semisubmersible platform spud leg 1, hydraulic permanent-magnetic sucker plays refitting The parts such as 3, split type steel buoyancy tank anti-ice body 4, the attachment means 5 that each anti-ice chunk of locking is integrated, vibration absorber 6 are put, it can With phenomena such as realization adapts to SEA LEVEL VARIATION, largely reduction Ice-excited vibration influences, reduced the accumulation and ice raft attachment of trash ice, carry Height opens ice the functions such as effect, can effectively protect the semisubmersible platform in the operation of polar region ice formation, it is dissolved what ice formation floating ice 8 was brought Threaten.
In the present invention, the hoisting apparatus 3 of hydraulic permanent-magnetic sucker 34 includes plunger case 31, plunger 32, the and of crane arm 33 Permanent magnetic chuck 34, the plunger case 31 are fixed on the stationary platform, and plunger 32 is located in plunger case 31, plunger 32 and crane arm 33 Connection, crane arm 33 are connected with permanent magnetic chuck 34, and range sensor 37 is provided with the permanent magnetic chuck 34.
In the present invention, the split type steel buoyancy tank anti-ice body 4 includes alternatively distributed positive back taper steel buoyancy tank 41 and just fallen Four point of one circular table steel buoyancy tank 42, the positive back taper steel buoyancy tank 41 and the four point of one circular table steel buoyancy tank 42 that just fall are respectively connected with branch Frame, support include long horizontal stay tube 51 and short horizontal stay tube 52, and adjacent stent is bolted to float so as to connect positive back taper steel Case 41 and the four point of one circular table steel buoyancy tank 42 that just fall;The lower section of 4 face permanent magnetic chuck of the split type steel buoyancy tank anti-ice body 34 is provided with Permanent magnetic chuck acts on steel plate 43.The positive back taper steel buoyancy tank 41 is provided with fixed guide 412 or steady pin 422, described just to fall four Divide a circular table steel buoyancy tank 42 that the steady pin 422 being used cooperatively with positive back taper steel buoyancy tank 41 or fixed guide 412 are installed.Pass through The cooperation of steady pin 422 and fixed guide 412, positive back taper steel buoyancy tank 41 is determined with just falling four point of one circular table steel buoyancy tank 42 Position.
In the present invention, the positive back taper steel buoyancy tank 41 includes the first epicone lid and first time cone lid, the first epicone lid with First time cone lid is symmetrical structure, and the section that the first epicone lid and first time cone cover is trapezoidal shape;Just fall four point of one circular table Steel buoyancy tank 42 is arc-shaped, and comprising the second epicone lid and second time cone lid, the second epicone lid and second time cone lid are symmetrical structure, The section of second epicone lid and second time cone lid is trapezoidal shape;First epicone lid and first time cone cover the key groove formed and are 45 ° to 65 °, the key groove that the second epicone lid and second time cone lid form is 45 ° to 65 °.The positive back taper steel buoyancy tank 41 or/and Just it is provided with level sensor 36 in four point of one circular table steel buoyancy tank 42.The first epicone lid and the second epicone are covered and are equipped with Manhole 411,421.The positive back taper steel buoyancy tank 41 or/and just fall and be filled with solid state foam in four point of one circular table steel buoyancy tank 42 Packing material.
In the present invention, the inner side of split type steel buoyancy tank anti-ice body 4 is provided with several damping devices 6, including vibration damping branch Support member 61, damping element 62 and rubber damping pad 63, vibration reduction support part 61 are arranged on the split type inwall of steel buoyancy tank anti-ice body 4, subtracted The element 62 that shakes is arranged on vibration reduction support part 61, and damping element 62 is connected with rubber damping pad 63.
The installation steps of split type steel buoyancy tank ice resistant device:
Fixed platform 2 is welded on 1 supernatant appropriate location of semisubmersible platform spud leg first, and bracket 23 is welded In correspondence position, strengthen fixed platform 2 and the bonding strength of spud leg 1.And assemble complete hydraulic permanent-magnetic sucker liftings by four Device 3 is arranged in the specified location of fixed platform 2.
Then vibration reduction support part 61 is respectively welded at the inwall specified location of four positive back taper steel buoyancy tanks 41 and assembled Corresponding damping element 62, rubber damping pad 63, complete the assembling of vibration absorber 6.
Then by one of populated solid state foam and the i.e. positive back taper steel of positive back taper steel buoyancy tank of damping device 6 is assembled Buoyancy tank 41 rely on spud leg be object of reference sinking to specified location, then by populated solid state foam and assemble damping device 6 The four points of half circular table steel buoyancy tanks that just falling just are falling four point of one circular table steel buoyancy tank 42 to fix guide 412 on positive back taper steel buoyancy tank Positioned for anchor point, be fixed by outside pushing tow instrument on the nesting of pin 412 to positive back taper steel buoyancy tank 41, finally by The locking device that bolt etc. docks both such as ring flange 53 further strengthen positive back taper steel buoyancy tank 41 with just fall four point of one round platform The connection of formula steel buoyancy tank 42.The assembling of split type steel buoyancy tank anti-ice body 4 is sequentially completed according to this process.
Finally the liquid level control switch on plunger case 31 and level sensor 36 are connected by wire, by plunger case 3 connect to form closed circuit with oil feeding reservoirs by entering flowline 35, by the controlling switch on permanent magnetic chuck 34 and apart from biography Sensor 36 is connected with wire.So far the installment work of split type steel buoyancy tank ice resistant device is completed.
As shown in drawings, split type steel buoyancy tank anti-ice body 4 of the invention is positive back taper steel buoyancy tank 41 by positive back taper steel buoyancy tank Just falling four points of half circular table steel buoyancy tanks 42 and forms the locking device 5 of the firm connection of both.Each anti-ice chunk is equal For closed stereo structure, including possess the casing for being enough to resist floating ice impact strength and solid state foam packing material.Steel buoyancy tank Casing is the direct contact object that platform resistance floating ice hits, and its stereochemical structure is positive back taper or positive reverse frustoconic, can be incited somebody to action The extruding of floating ice, which destroys, is changed into bending failure, effectively prevent direct effect of the floating ice to spud leg.For spud leg right-angle side pair Answer the four i.e. positive back taper steel buoyancy tanks 41 of closed positive back taper steel buoyancy tank, as shown in Figure 5, its cone angle between 45 ° to 65 °, First epicone lid is up-small and down-big, and first time cone lid is up big and down small, and both are symmetrical structure, are integrated.It is straight for spud leg Four corresponding to angle just fall four points of half circular table steel buoyancy tanks 42, and as shown in Figure 6, its cross sectional shape is two symmetrical ladders Shape forms, and hypotenuse acute angle is also between 45 ° to 65 ° and the positive cone angle formed objects of back taper steel buoyancy tank 41, it is ensured that between anti-ice chunk Intact embedding it can be integrated.
Steel buoyancy tank casing is welded using low temperature resistant steel plate, and solid state foam filling access 44 is offered on casing;Fill out Filling material has the characteristics such as water imbibition is low, compressibility is low, density is small, low-temperature resistance such as ceramic foam material, polymeric foamed material Deng enough buoyancy can be provided for casing.Each anti-ice chunk can be then mutually embedding around spud leg from floating on certain water surface Set is integrated by after the firm connection of locking device 5, can also realize that split type steel buoyancy tank anti-ice body 4 swims in the water surface, keep Certain drinking water.Further, since each anti-ice chunk provides buoyancy using packing material, therefore to the seal of steel buoyancy tank There is no rigors, so as to reduce the manufacture difficulty of steel buoyancy tank, avoid similar typically needing strict closed its watertight of steel buoyancy tank Property once the destroyed phenomenon for just sinking seabed occurs, further increase the reliability of split type steel buoyancy tank anti-ice body 4.
Set at the inwall interval that four corresponding to spud leg right-angle side closed positive back taper steel buoyancy tanks are positive back taper steel buoyancy tank 41 Some vibration absorbers 6 are put, assemble vertical shock absorption device 6 in advance before steel float deposing.Damping element 62 have it is corrosion-resistant, The characteristic such as low temperature resistant, it is fixed in on the vibration reduction support part 61 of steel buoyancy tank inwall welding, being connected with the outer surface of damping element 62 Vertical rubber damping pad 63, whole split type steel buoyancy tank anti-ice body 4 rely on the vibration isolation rubber that positive back taper steel buoyancy tank inwall is set Pad 63 moves up and down in the sliding friction of spud leg surface.Optional arch of structure of rubber damping pad 63 etc. can bear more large impact power Shape, in order to reduce the sliding-frictional resistance of rubber blanket, to be carried out on the spud leg surface being in contact with rubber damping pad 63 necessarily Smooth treatment such as using impermeable seal processing, smear the special coating that can reduce outer surface coefficient of friction, while The surface of rubber damping pad 63 can be also installed with low-friction coefficient, low temperature resistant, wear-resisting material such as polytetrafluoroethylmaterial material.This hair Bright reliability such as will realize that up and down motion is wanted than existing with spiral gear engagement realization up and down motion, to install roller It is much higher, and the buoyancy realization for relying solely on itself moves up and down, economy is considerable.This is due to that gear mesh form exists After repeat impact, gear tooth form is easily deformed, roller can only be run with single-degree-of-freedom, and the ball inside roller is hit floating ice Easily deformed after hitting, reliability is poor.In addition, vibration absorber 6 is due to being provided with damping element 62 and rubber damping pad 63, quite In being provided with double-layer vibration damping effect, the rubber damping pad 63 of the vibration absorber 6 assembled and spud leg surface gap in 50mm extremely Between 100mm, the vibration damping and vibration isolation function of vibration absorber 6 is better achieved.
As shown in Figure 7, due to having passed through nested, bolt of the steady pin 422 with fixed guide 412 between each anti-ice chunk Closely connection etc. carries out firm locking for connection, ring flange 53, and the synchronism of each anti-ice chunk motion is ensure that when moving up and down, Manhole is offered at the inwall of each anti-ice chunk, is easy to personnel to enter internal overhaul, and in just four point of one circular table steel The inwall of buoyancy tank 42 is provided with the passage 423 for arriving at the connection of ring flange 53, facilitates personnel to arrive in the middle part of inwall and overhauls.
In the upper plane that four corresponding to spud leg right angle are just falling four points of half circular table steel buoyancy tanks 42, provided with permanent magnetism Sucker acts on steel plate 43, and it is integrated with steel buoyancy tank, material for the performance that has that low temperature resistant, magnetic conductivity is good etc. ferrimagnet such as Nickel steel material of the nickel content between 12% to 13%, the effect steel plate answers flat smooth, beneficial to the suction of fluid pressure type permanent magnetic chuck Attached effect.
The hydraulic permanent-magnetic sucker hoisting apparatus 3 of the present invention by plunger case 31, plunger 32, crane arm 33, permanent magnetic chuck 34, enter The components such as flowline 35, level sensor 36 and range sensor 37 form.Permanent magnetic chuck 34 is to use to have ferromagnetism strong, resistance to The nickel steel material of the characteristics such as low temperature.Level sensor 36 be arranged on just fall four point of one inwall appropriate location of circular table steel buoyancy tank 42, Range sensor 37 is arranged on the correct position of permanent magnetic chuck 34.Its operation principle can refer to Fig. 1 and be illustrated:In common sea Under ice ice regime, split type steel buoyancy tank anti-ice body 4 can rely on natural buoyancy effect to be moved up and down along spud leg, and certain thickness floating ice is hit Hit split type steel buoyancy tank anti-ice body 4 will directly bend it is broken.Now, level sensor 36 floats due to being fixed in split type steel On the inwall of case anti-ice body 4, its waterline position sensed is in the scope set during normally off.Therefore hydraulic permanent-magnetic sucker rises Refitting puts 3 and is also at normally off.
And when ice condition is quite serious, ice layer thickness increase, icing rate are accelerated, the accumulation of trash ice and trash ice it is secondary fast Phenomena such as speed freezes is possible to that the outer surface of split type steel buoyancy tank anti-ice body 4 can be made by sea ice to be freezed, split type so as to add The displacement of steel buoyancy tank anti-ice body 4, cause its sinking certain position and lose the good anti-ice effect of original mobility.Now split The drinking water of formula steel buoyancy tank anti-ice body 4 is significantly increased, when drinking water value reaches the setting value of the activation of water level sensor 36, water level sensing Device 36 is activated and transmits signal to the controlling switch of hydraulic permanent-magnetic sucker hoisting apparatus.So as to start hydraulic permanent-magnetic sucker lifting Device 3, its plunger 32 is close straight down, when the permanent magnetic chuck on permanent magnetic chuck 34 and split type steel buoyancy tank anti-ice body 4 acts on When the distance of steel plate 43 reaches certain value, range sensor 37 is activated and communicates information to the sticking of permanent magnetic chuck 34 switch, from And permanent magnetic chuck 34 and the mutually strong suction of permanent magnetic chuck effect steel plate 43, range sensor 37 are closed and communicate information to hydraulic permanent-magnetic Sucker hoisting apparatus 3, plunger 32 are lifted up driving crane arm 33 being lifted so as to lift split type steel buoyancy tank anti-ice body 4 Hydraulic permanent-magnetic sucker hoisting apparatus 3 will be provided ice to the vertical of ice sheet by split type steel buoyancy tank anti-ice body 4 in journey Layer is broken.When split type steel buoyancy tank anti-ice body 4 is promoted to certain altitude, after its drinking water reaches certain value, level sensor 36 close, so that hydraulic permanent-magnetic sucker hoisting apparatus 3 is closed, permanent magnetic chuck 34 discharges, and make with permanent magnetic chuck effect steel plate 43 Departed from surface.Now, the deadweight of split type steel buoyancy tank anti-ice body 4 is more than suffered buoyancy, moves downward, again that ice sheet edge is perpendicular Nogata is crushed to by deadweight, finally falls back to equilbrium position, it is recovered original anti-ice mobility.
Described above is only the preferred embodiment of the present invention, it should be pointed out that:For the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (7)

1. a kind of steel buoyancy tank ice resistant device suitable for polar region ice formation semisubmersible platform, including the fixation being fixed on spud leg are put down Platform, the fixed platform lower section are provided with some groups of hydraulic permanent-magnetic sucker hoisting apparatus, hydraulic permanent-magnetic sucker hoisting apparatus lower section Split type steel buoyancy tank anti-ice body provided with anti-ice, the side of the split type steel buoyancy tank anti-ice body is wedge shape;It is characterized in that: The split type steel buoyancy tank anti-ice body includes alternatively distributed positive back taper steel buoyancy tank and the four point of one circular table steel buoyancy tank that just fall, described Positive back taper steel buoyancy tank and the four point of one circular table steel buoyancy tank that just fall are respectively connected with support, and adjacent stent is bolted so as to connect Positive back taper steel buoyancy tank and the four point of one circular table steel buoyancy tank that just fall;Set below the split type steel buoyancy tank anti-ice body face permanent magnetic chuck There is permanent magnetic chuck to act on steel plate;The positive back taper steel buoyancy tank includes the first epicone lid and first time cone covers, the first epicone lid and the Once cone lid is symmetrical structure, and the section that the first epicone lid and first time cone cover is trapezoidal shape;Just fall four point of one circular table steel Buoyancy tank is arc-shaped, and comprising the second epicone lid and second time cone lid, it is symmetrical structure that the second epicone lid and second time cone, which cover, second The section of epicone lid and second time cone lid is trapezoidal shape;First epicone lid and first time cone lid composition key groove for 45 ° extremely 65 °, the key groove that the second epicone lid and second time cone lid form is 45 ° to 65 °;Side is set in the split type steel buoyancy tank anti-ice body There are several damping devices.
2. the steel buoyancy tank ice resistant device according to claim 1 suitable for polar region ice formation semisubmersible platform, it is characterised in that: The hydraulic permanent-magnetic sucker hoisting apparatus includes plunger case, plunger, crane arm and permanent magnetic chuck, and the plunger case is fixed on fixation On platform, plunger is located in plunger case, and plunger is connected with crane arm, and crane arm is connected with permanent magnetic chuck.
3. the steel buoyancy tank ice resistant device according to claim 2 suitable for polar region ice formation semisubmersible platform, it is characterised in that: Range sensor is installed on the permanent magnetic chuck.
4. the steel buoyancy tank ice resistant device according to claim 3 suitable for polar region ice formation semisubmersible platform, it is characterised in that: The positive back taper steel buoyancy tank is provided with fixed guide or steady pin, and described just four point of one circular table steel buoyancy tank is provided with just falling The steady pin or fixed guide that cone steel buoyancy tank is used cooperatively.
5. the steel buoyancy tank ice resistant device according to claim 4 suitable for polar region ice formation semisubmersible platform, it is characterised in that: The positive back taper steel buoyancy tank or/and just fall and be provided with level sensor in four point of one circular table steel buoyancy tank.
6. the steel buoyancy tank ice resistant device according to claim 5 suitable for polar region ice formation semisubmersible platform, it is characterised in that: The first epicone lid and the second epicone cover and are equipped with manhole.
7. the steel buoyancy tank ice resistant device according to claim 6 suitable for polar region ice formation semisubmersible platform, it is characterised in that: The positive back taper steel buoyancy tank or/and just fall and be filled with solid state foam packing material in four point of one circular table steel buoyancy tank.
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CN106284266B (en) * 2016-10-14 2018-05-18 中国能源建设集团江苏省电力设计院有限公司 A kind of anti-ice for the support of water surface photovoltaic pushes away system
CN107117269A (en) * 2017-04-18 2017-09-01 江苏科技大学 A kind of new semi-submersible offshore platform and application method suitable for the arctic
CN107150770B (en) * 2017-05-26 2018-11-06 大连理工大学 A kind of ice resistant device suitable for shell spud leg self-elevating ocean platform

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