CN109866888A - The dry tree semi-submerged platform heave plate of one kind and main hull relative motion inhibit device - Google Patents
The dry tree semi-submerged platform heave plate of one kind and main hull relative motion inhibit device Download PDFInfo
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- CN109866888A CN109866888A CN201910226922.7A CN201910226922A CN109866888A CN 109866888 A CN109866888 A CN 109866888A CN 201910226922 A CN201910226922 A CN 201910226922A CN 109866888 A CN109866888 A CN 109866888A
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Abstract
The invention discloses the dry tree semi-submerged platform heave plates of one kind and main hull relative motion to inhibit device.It includes that the movement of Ⅹ shape inhibits anchor cable group, anchor cable guide locking apparatus and energy buffer device that the relative motion, which inhibits device,；It includes 2 top anchor cables and 2 lower part anchor cables that the movement of Ⅹ shape, which inhibits anchor cable group, is arranged between 2 top anchor cables and the lower heave plate and main hull of 2 lower part anchor cable Yu Ganshu semi-submerged platforms in X-type；Anchor cable guide locking apparatus is set on the column of dry tree semi-submerged platform, and can be applied pretension to top anchor cable and be locked；Lower part anchor cable is connect with lower heave plate, and top anchor cable is connect after being oriented to by anchor cable guide locking apparatus with energy buffer device.Elastic support is used at Ⅹ type anchor cable lifting device of the invention, and Ⅹ type anchor cable introduce platform column energy snubber cabin be connected with mass, for buffering due to the inertia force that heave plate movement generates under platform, the impact force that can effectively reduce anchor cable and base construction improves the fatigue strength and reliability of respective members.
Description
Technical field
The present invention relates to the dry tree semi-submerged platform heave plates of one kind and main hull relative motion to inhibit device, belongs to deep water ocean
Oil gas development technology field.
Background technique
Deepwater floating platform is the main equipment of current deep water offshore and gas development, and semi-submerged type platform is being built, pacified
There is apparent advantage compared with open side type platform and tension leg platform (TLP) in terms of dress and economy.But the heaving fortune of current semisubmersible platform
Dynamic performance is poor, and wet-type christmas tree must be used when as deepwater oil-gas development production platform, and wet-type christmas tree technology is complicated, valence
Lattice are expensive.Dry type tree has the advantages such as well workover is convenient, operating cost is low, downtime is short and flowing safety is good, due to
It requires platform heaving amplitude low, and only tension leg platform (TLP) and open side type platform can support dry type tree at present.It compares
Both platforms, semi-submersible type production platform have limit by the depth of water, changing load is big, can the advantages such as entirety towage, in recent years,
Ocean engineering circle is dedicated to making it that can support dry type tree by improving semisubmersible platform movenent performance.Patent Application Publication
(number of patent application 201710873116.X) disclose it is a kind of for offshore and gas development field can realize condensate storage it is outer it is defeated,
Dry tree semi-submerged platform (Fig. 1) of new type of deep-water floating type multifunctional of dry type tree can be used, main structure is by top main hull
4, lower part heave plate structure 5, top main hull and lower part heave plate elongated flexible rod piece structure 6, anchoring system 7, top tensioning are vertical
Guard system 8 is constituted.Wherein using with certain rigidity between elongated flexible rod piece structure and top main hull and lower part heave plate
Flexible connecting member or rotary joint connection, discharge it is curved between elongated flexible member and top main hull and lower part heave plate
Square realizes that top main hull is connect with the small scale component of lower part heave plate, and then greatly simplifies construction and installation, and improve knot
The fatigue life of structure junction and reliability.Due to using the above connection type between top main hull and lower part heave plate, and
Elongated flexible rod piece length is longer, and relative motion will be generated between top main hull and lower part heave plate, especially in typhoon etc.
Biggish relative motion can be generated under the conditions of severe sea condition, lead to elongated flexible rod piece structure and top main hull and lower part heaving
Flexible connecting member between plate, and the top tensioned risers and lower part heave plate junction structure that are passed through in the middle part of the heave plate of lower part
Design, manufacture difficulty are big, costly.Effectively inhibit the relative motion between lower part heave plate and top main hull, will effectively drop
The design of these crucial connection structures of low platform builds difficulty, and reduces engineering cost.
Summary of the invention
The object of the present invention is to provide the dry tree semi-submerged platform heave plates of one kind and main hull relative motion to inhibit device, effectively
Inhibit platform heave plate and main hull relative motion, installation method is easy, and design, the construction for reducing platform key connection structure are difficult
Degree, improves the security reliability of platform.
Dry tree semi-submerged platform according to the present invention is Chinese patent application (application number 201710873116.X) disclosed
The dry tree semi-submerged platform of deep water floating type multifunctional.
Dry tree semi-submerged platform heave plate provided by the present invention and main hull relative motion inhibit device, including the movement of Ⅹ shape
Inhibit anchor cable group, anchor cable guide locking apparatus and energy buffer device；
It includes 2 top anchor cables and 2 lower part anchor cables, 2 top anchor cables and 2 that the Ⅹ shape movement, which inhibits anchor cable group,
Lower part anchor cable described in root is arranged between the lower heave plate and main hull of the dry tree semi-submerged platform in X-type；
The anchor cable guide locking apparatus is set on the column of the dry tree semi-submerged platform, and can be applied to the top anchor cable
Add pretension and locks；
The lower part anchor cable is connect with the lower heave plate, and the top anchor cable is led by the anchor cable guide locking apparatus
Connect backward with the energy buffer device, the energy buffer device can the movement to the lower heave plate Ⅹ shape is transported
The dynamic impact force for inhibiting anchor cable group to generate is buffered；
Every a set of relative motion of two adjacent columns medial planes arrangement inhibits device on the dry tree semi-submerged platform.
The a set of Ⅹ type movement of every two adjacent columns medial planes arrangement on the dry tree semi-submerged platform inhibits anchor
Four sets of arrangement of rope, i.e. four column platforms four sides, the Ⅹ type movement inhibits anchor cable, and three column platforms, three face arranges three sets described Ⅹ
Type movement inhibits anchor cable, to inhibit the movement of horizontal all directions between heave plate and main hull.
Above-mentioned relative motion inhibits in device, at the right-angled intersection of 2 top anchor cables and 2 lower part anchor cables
It is connected by cross connecting plate, the form concretely welded or cast；
2 lower part anchor cables are connected to the two sides of the lower heave plate by suspension centre connection structure；
The suspension centre connection structure includes suspension centre, can connect jointing with disassembly under water, therefore can be with the lower part
Anchor cable can be dismounted under water by underwater jointing.
Above-mentioned relative motion inhibits in device, and the anchor cable guide locking apparatus includes set on the of the column lower part
One directive wheel and the second directive wheel and anchor cable lifting locking device set on the column top；
The top anchor cable is directed to the anchor cable lifting locking device by first directive wheel, then by described
Second directive wheel is directed to the energy buffer device；
The anchor cable lifting locking device is realized using hydraulic cylinder or mechanical device applies pretension to the top anchor cable
And locked effect.
Above-mentioned relative motion inhibits in device, and first directive wheel is provided close to hull central axes direction, and can be left
Right swing, to adapt to the relative motion of all directions between heave plate and main hull.
Above-mentioned relative motion inhibits in device, and the energy buffer device includes the elasticity branch at the top of the column
Seat and the energy snubber cabin inside the column；
The anchor cable lifting locking device is set on the elastic support；
The top anchor cable stretches in the energy snubber cabin.
Above-mentioned relative motion inhibits in device, and the elastic support is set in support construction；
The elastic support uses helical spring flexible support；
Normal operation condition, the anchor cable lifting locking device lock the top anchor cable on the elastic support,
The impact force generated by the buffering of the elastic support due to the relative motion between heave plate and main hull.
Above-mentioned relative motion inhibits in device, and the top in the energy snubber cabin is equipped with anchor cable guiding inlet and outlet；
The interior bulkhead in the energy snubber cabin is equipped with sliding rail；
Mass is equipped in the energy snubber cabin, the lower part of the mass is equipped with snubber elastomeric mechanism；
The top anchor cable is connect after passing through anchor cable guiding inlet and outlet with the mass, and the mass can be along institute
State sliding rail movement；
The snubber elastomeric mechanism includes helical spring and the damping energy absorption device on the helical spring；Work as sea situation
Excessively severe, the mass moves up and down along the sliding rail, and the snubber elastomeric mechanism of bottom is for buffering the counterweight
The impact of object.
The survival condition of typhoon, unlocks the anchor cable lifting locking device at the top of column, the mass due to
Gravity is tensioned the top anchor cable by guide frame, inhibits the phase between heave plate and main hull by the mass gravity
To movement, when platform strenuous exercise, the mass moves up and down in the energy snubber cabin along the sliding rail, absorbs phase
To movement generate energy, while in the energy snubber cabin lower part the snubber elastomeric mechanism can snubber due to described
Mass moves downward the impact force to the energy snubber cabin structure of excessive generation, reach buffering heave plate and main hull it
Between relative motion to inhibit device generate impact force purpose.
Above-mentioned relative motion inhibits in device, and the top anchor cable and the lower part anchor cable are anchor chain or wirerope,
Required mechanical index is designed according to platform property and operation sea situation.
Above-mentioned relative motion inhibits in device, the elastic support, the mass weight at the top of column and
The snubber elastomeric mechanism particular technique index is designed according to different platform scale and operation sea situation.
Relative motion of the present invention inhibits device that can be installed by the following method:
1) before stage+module, suspension centre connection structure has been installed on lower part heave plate corresponding position, just with platform integral installation
Position；
2) column self-energy buffering cabin is built together with platform body during platform construction, mass and bilge buffering
Elastic mechanism is debugged before stage+module and is finished；
3) main platform body after the installation is completed, corresponds to from two heel posts and draws anchor cable in energy snubber cabin, and anchor cable one end is located at
In energy snubber cabin, the other end is worn downwards by the second directive wheel at the top of column, the steering of anchor cable lifting locking device along column
The first directive wheel of column lower part is crossed, subsequent two sides anchor cable is connected on mounting shipping with cross connecting plate, while by Ⅹ type anchor
Rope cross connecting plate to heave plate part anchor cable is connected to cross connecting plate, then transfers cross connecting plate, by connecting under water
Street corner is connect by Ⅹ type anchor cable and heave plate suspension centre attachment device, it is pre-tensioner to Ⅹ type anchor cable by anchor cable lifting locking device；
4) the every side main hull of mounting platform and lower heave plate inhibit device by the above process, and then every anchor cable passes through corresponding
Anchor cable lifting locking device be tensioned to predetermined pretension and lock；
5) anchor chain and mass in column energy snubber cabin are connected, guarantees mass to anchor cable between anchor cable lifting locking device
With some tension, i.e., at anchor cable and tensioning state, completion the whole series inhibit the installation of device.
The invention adopts the above technical scheme, which has the following advantages:
1, dry tree semi-submerged platform heave plate provided by the invention and main hull relative motion inhibit device, can after being installed
Effectively inhibit to do the relative motion between tree semi-submerged platform main hull and heave plate as disclosed in 201710873116.X, reduce flat
It is safe and reliable to improve it for the design difficulty of slender rod piece and main hull and heave plate jointing between platform main hull and heave plate
Property.
2, elastic support is used at Ⅹ type anchor cable lifting device of the invention, and Ⅹ type anchor cable introduces platform column energy snubber
Cabin is connected with mass, for buffering due to the inertia force that heave plate movement generates under platform, can effectively reduce anchor cable and pedestal
The impact force of structure improves the fatigue strength and reliability of respective members.
3, the present invention just has different buffering strategies in platform different conditions, i.e., in normal operation condition (no typhoon production
Operation) Ⅹ type anchor cable locks at column top lift device, by elastic support cushion impact forces at the top of column, and maximum journey
Relative motion between degree constraint platform main hull and heave plate；In Ⅹ type anchor cable of survival condition (typhoon) in column top lift
It is opened at device, shock absorbing is absorbed by mass gravity in column internal damping cabin, caused by reducing typhoon adverse circumstances
Relative motion between platform main hull and heave plate and is constrained to the impact force for inhibiting device by lower heave plate strenuous exercise
Under amplitude and specific；The buffering strategy can effectively improve buffer unit and inhibit efficiency and reduce to inhibit device design and manufacture cost.
4, Platform lifting devices can be used in the present invention or other small-sized auxiliary devices are completed to inhibit the installation and removal of device, are not required to
Large Construction is wanted to equip, convenient, flexible, installation maintenance is at low cost.
Detailed description of the invention
Fig. 1 is the dry tree semi-submerged platform general structure schematic diagram that the present invention applies；
Fig. 2 is the schematic diagram that the present invention is installed on the outside of two column of platform front；
Fig. 3 is the schematic diagram that the present invention is installed on the outside of two column of platform side；
Fig. 4 is Ⅹ type anchor cable cross-connecting structure schematic diagram of the invention；
Fig. 5 is A-A sectional view；
Fig. 6 is elastic base and buffering cabin enlarged drawing at the top of A-A section column.
It is respectively marked in figure as follows:
11 lower part anchor cables, 13 top anchor cables, 12 cross board connecting structures, 121 main bodys, 122 connection lifting hole(eyelet)s, 123 connection cards
Ring, 21 suspension centre connection structures, 22 directive wheel pedestals, 23 first directive wheels, 24 anchor cable lifting locking devices, 25 second directive wheels,
31 support constructions, 32 elastic supports, 33 energy snubber cabins, 331 bell guides, 332 energy snubber cabin bulkheads, 333 sliding rails,
334 mass, 335 snubber elastomeric mechanisms, 4 top main hulls, 5 lower part heave plate structures, 6 top main hulls and lower part heave plate
Elongated flexible rod piece structure, 7 anchoring systems, 8 top tensioned riser systems.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing, but the invention is not limited to following embodiments.
For a kind of dry tree semi-submerged platform of deep water floating type multifunctional shown in Fig. 1, a kind of dry tree provided by the invention is partly latent flat
Platform heave plate and main hull relative motion inhibit device comprising the movement of Ⅹ shape inhibits anchor cable group, anchor cable to promote guiding locking dress
It sets and energy buffer device three parts.According to platform column quantity, a set of opposite fortune of the every adjacent columns medial plane installation of platform
It is dynamic to inhibit device, such as four column platforms need to install four sets of relative motions and inhibit devices, three column platforms need to install three sets it is opposite
Movement suppression device is described in detail by taking four column platforms as an example below.
Platform four side relative motions all around inhibit device form identical, amount to four sets.Such as Fig. 2, Fig. 3, Fig. 5 and figure
Shown in 6, it includes that the first directive wheel 23 of column bottom, the anchor cable at the top of column promote locking dress that anchor cable, which promotes guide locking apparatus,
24 and second directive wheel 25 are set, column bottom is equipped with directive wheel pedestal 22, and the first directive wheel 23 is installed on directive wheel pedestal 22 and leans on
Nearly platform central axes side, can swing, to adapt to the movement vertical along Ⅹ type anchor cable plane of lower heave plate；Anchor cable promotes lock
Tight device 24 inhibits anchor cable group for promoting the movement of Ⅹ shape, applies pretension；Second directive wheel 25 is used for anchor cable guiding energy
Buffer unit.
As Figure 2-Figure 5, it includes 2 lower part anchor cable 11 and 2 piece top anchor cables 13,2 that the movement of Ⅹ shape, which inhibits anchor cable group,
Lower part anchor cable 11 is for connecting cross board connecting structure 12 and suspension centre connection structure 21, lower part anchor cable 11 and suspension centre connection structure 21
Between using can dismount under water jointing connection, realize underwater connection disassembling；2 top anchor cables 13 connect knot with four-bladed vane
Structure 12 is connected, and is folded to respectively by 23 folding of the first directive wheel positioned at two heel posts upwardly through anchor cable lifting locking device 24 flat
In the middle part of platform, then it is connected down through energy snubber cabin 32 with mass 324 by the second directive wheel 25.Four-bladed vane connection knot
Structure 12 (such as Fig. 4) is the crucial connection structure for constituting Ⅹ type form of anchor cable comprising main body 121, connection lifting hole(eyelet) 122 and connection card
Ring 123.
As shown in Fig. 5-Fig. 6, energy buffer device includes that the elastic support 32 at the top of column and the energy inside column are slow
Rush cabin 33.Wherein, elastic support 32 provides elasticity by several parallel spiral springs, is seated on support construction 31, for buffering
The impact force that heave plate inertia generates under job state.Energy snubber cabin 33 includes that anchor cable penetrates bell guide 331, energy delays
Cabin bulkhead 332, mass up and down motion directive slide track 333, mass 334 and buffering elastic mechanism 335, every anchor cable is rushed to pass through
Anchor cable penetrates bell guide 331, penetrates in energy snubber cabin 33, is connected with mass 334, and mass 334 can be along sliding rail 333
It moves up and down, buffers lower heave plate strenuous exercise impact force；Sliding rail 333 is arranged in four side of energy snubber cabin, constrains 334 water of mass
Prosposition moves；Mass 334 uses box hollow structure, the weights such as inside filling iron steel sand；Snubber elastomeric mechanism 335 is spiral shell in parallel
Spring supporting top board structure is revolved, arranges hydraulic damper or other forms damper, snubber mass drop energy therebetween.
In above-described embodiment, anchor chain or wirerope form is can be used in top anchor cable and lower part anchor cable.
In above-described embodiment, Ⅹ shape is moved after inhibition anchor cable group is installed between the every side main hull of platform and heave plate
Form Ⅹ type anchor cable structure, while anchor cable has pretension according to tensioning state is designed as, can inhibit platform main hull with it is sagging
The Ⅹ flat in-plane moving of type anchor cable structure of plate is swung, can inhibit after Ⅹ type anchor cable structure of platform four sides installation all around as a result,
The relative motion of platform main hull and the lower horizontal all directions of heave plate.
In above-described embodiment, after inhibiting device to be installed, the movement of Ⅹ shape inhibits anchor cable group total system to be in tensioning shape
State, normal operation condition anchor cable lifting locking device 24 lock top anchor cable 13 in elastic support 32, pass through elastic support 32
The impact force that cushioning restraint is generated due to the relative motion between lower heave plate and main hull；The survival condition of typhoon, solution
Column top anchor cable lifting locking device 24 is opened, mass passes through counterweight since gravity is by guide frame Ⅹ type anchor cable of tensioning
Object gravity inhibits lower relative motion between heave plate and main hull, and when platform strenuous exercise, mass is in energy snubber cabin
It is interior to move up and down along sliding rail 333, absorb the energy that relative motion generates, while lower buffer elastic mechanism in energy snubber cabin
335 can snubber mass move downward the impact force to hull cabin structure.
The dry tree semi-submerged platform heave plate of the present invention inhibits device that can pacify by the following method with main hull relative motion
Dress:
1) suspension centre connection structure 21 is installed on lower part heave plate corresponding position, in place with platform integral installation；
2) debugging is built in energy snubber cabin 33 together with platform, debugs mass 334, snubber elastomeric mechanism 335 in shipyard
Cooperate function with sliding rail 333；
3) it after main platform body Attention problems, is corresponded to from two heel posts and draws anchor cable in energy snubber cabin 33, anchor cable one
End is located in buffering cabin, and the other end is turned to by the second directive wheel 25, the anchor cable lifting locking device 24 at the top of column along column
It is passed down through the first directive wheel 23 of column lower part, subsequent two sides anchor cable is connected on mounting shipping with cross connecting plate 12, together
When the lower part anchor cable 11 of Ⅹ type anchor cable lower section is connected to cross connecting plate 12, cross connecting plate 12 is transferred, by underwater
Jointing connects Ⅹ type anchor cable and heave plate suspension centre connection structure 21, forms Ⅹ type anchor cable form, is promoted and is locked by anchor cable
Device 24 is pre-tensioner to Ⅹ type anchor cable, and left and right anchor cable pretension is identical；
4) all around every side main hull and lower heave plate inhibit device, subsequent every anchor cable to mounting platform by the above process
Predetermined pretension is tensioned to by corresponding lifting locking device and is locked；
5) anchor cable and mass 334 in column energy snubber cabin are connected, pre-lift is carried out to mass 334 before installation, is matched
Weight snubber elastomeric mechanism 335 is less than gravity to 334 support force of mass, connects top anchor cable 13 and mass 334, mass
There is some tension to anchor cable between lifting locking device, complete a whole set of installation for inhibiting device.
Above-described embodiment is merely to illustrate the present invention, wherein the structure of each component, setting position and its connection type etc. are all
It can be varied, all equivalents and improvement carried out based on the technical solution of the present invention should not exclude
Except protection scope of the present invention.
Claims (9)
1. a kind of dry tree semi-submerged platform heave plate and main hull relative motion inhibit device, the relative motion inhibition device includes
The movement of Ⅹ shape inhibits anchor cable group, anchor cable guide locking apparatus and energy buffer device；
The Ⅹ shape movement inhibits anchor cable group to include 2 top anchor cables and 2 lower part anchor cables, 2 top anchor cables and 2 institutes
Lower part anchor cable is stated to arrange between the lower heave plate and main hull of the dry tree semi-submerged platform in X-type；
The anchor cable guide locking apparatus is set on the column of the dry tree semi-submerged platform, and can be applied to the top anchor cable pre-
Tension simultaneously locks；
The lower part anchor cable is connect with the lower heave plate, after the top anchor cable is oriented to by the anchor cable guide locking apparatus
Connect with the energy buffer device, the energy buffer device can movement to the lower heave plate Ⅹ shape moved press down
The impact force that anchor cable group processed generates is buffered；
Every a set of relative motion of two adjacent columns medial planes arrangement inhibits device on the dry tree semi-submerged platform.
2. relative motion according to claim 1 inhibits device, it is characterised in that: described in 2 top anchor cables and 2
It is connected at the right-angled intersection of lower part anchor cable by cross connecting plate；
2 lower part anchor cables are connected to the two sides of the lower heave plate by suspension centre connection structure.
3. relative motion according to claim 1 or 2 inhibits device, it is characterised in that: the anchor cable guide locking apparatus
The second directive wheel and anchor cable promotion locking including being set to the first directive wheel of the column lower part and set on the column top
Device；
The top anchor cable is directed to the lifting locking device by first directive wheel, is then oriented to by described second
Wheel is directed to the energy buffer device；
The lifting locking device is realized using hydraulic cylinder or mechanical device applies pretension and locked to the top anchor cable
Effect.
4. relative motion according to claim 3 inhibits device, it is characterised in that: first directive wheel is provided close to ship
Body central axes direction, and can swing.
5. relative motion according to claim 3 or 4 inhibits device, it is characterised in that: the energy buffer device includes
Elastic support at the top of the column and the energy snubber cabin inside the column；
The lifting locking device is set on the elastic support；
The top anchor cable stretches in the energy snubber cabin.
6. relative motion according to claim 5 inhibits device, it is characterised in that: the elastic support is set to support construction
On；
The elastic support uses helical spring flexible support.
7. relative motion according to claim 5 or 6 inhibits device, it is characterised in that: the top in the energy snubber cabin
It is oriented to and imports and exports equipped with anchor cable；
The interior bulkhead in the energy snubber cabin is equipped with sliding rail；
Mass is equipped in the energy snubber cabin, the lower part of the mass is equipped with snubber elastomeric mechanism；
The top anchor cable is connect after passing through anchor cable guiding inlet and outlet with the mass, and the mass can be along the cunning
Rail movement.
8. relative motion according to claim 7 inhibits device, it is characterised in that: the snubber elastomeric mechanism includes spiral
Spring and the damping energy absorption device on the helical spring.
9. relative motion according to claim 1 to 8 inhibits device, it is characterised in that: the top anchor cable and
The lower part anchor cable is anchor chain or wirerope.
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| CN201910226922.7A CN109866888B (en) | 2019-03-25 | 2019-03-25 | Relative motion restraining device for dry tree semi-submersible platform heave plate and main hull |
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|---|---|---|---|
| CN201910226922.7A CN109866888B (en) | 2019-03-25 | 2019-03-25 | Relative motion restraining device for dry tree semi-submersible platform heave plate and main hull |
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| Publication number | Publication date |
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| CN109866888B (en) | 2020-03-03 |
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