CN109229294A - Semisubmersible drilling platform lower box - Google Patents
Semisubmersible drilling platform lower box Download PDFInfo
- Publication number
- CN109229294A CN109229294A CN201811359118.8A CN201811359118A CN109229294A CN 109229294 A CN109229294 A CN 109229294A CN 201811359118 A CN201811359118 A CN 201811359118A CN 109229294 A CN109229294 A CN 109229294A
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- mandril
- storehouse
- flowing plate
- drilling platform
- lower box
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- 238000005553 drilling Methods 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
- B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
- B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
- B63B43/06—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability using ballast tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/4466—Floating structures carrying electric power plants for converting water energy into electric energy, e.g. from tidal flows, waves or currents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a kind of semisubmersible drilling platform lower box, basic structure includes: main storehouse, provides closed cabin, and main storehouse is circumferentially provided with horizontal guide hole；To flowing plate, be distributed in main storehouse periphery to set a distance at；Mandril, in same level, each flowing plate of supporting at least is adapted to there are two mandril, and mandril and the sealing of guide hole liquid cooperatively form prismatic pair；Resetting apparatus provides the power to flowing plate far from main storehouse direction；Slider-crank mechanism is located in main storehouse, and the mandril is the driving link of the slider-crank mechanism, and mandril has determining impulse stroke；And generator, it is driven by the slider-crank mechanism.Semisubmersible drilling platform lower box according to the present invention can be effectively reduced the roll and pitch of semisubmersible drilling platform.
Description
Technical field
The present invention relates to a kind of semisubmersible drilling platform lower boxes.
Background technique
Semisubmersible drilling platform, also known as column stable drilling platforms.Semisubmersible drilling platform be most of floating body not in
A kind of mobile drilling platform of small-waterplane-area of underwater, is evolved from bottom founded rig.Semi-submersible type drilling well
Platform is made of platform body, column and lower body or buoyancy tank, and buoyancy tank therein is also known as lower box or caisson, on the whole again quilt
Referred to as caisson type drilling platforms.
Caisson type drilling platforms is that several root posts are arranged on the same circumference, and column is used to support drilling platforms, and
Column lower end is mounted on caisson on lower box in other words.Lower box is mostly round, rectangle or boot-shaped, and lower box and column are one by one
It is corresponding, generally there are 3 ~ 5.The stability of semisubmersible drilling platform depends on the weight of lower box, and lower box is heavier, and semi-submersible type is bored
The amplitude of the roll and pitch of well platform is smaller.
The off-lying sea hydrology, weather condition is more complicated, and drilling platforms normal operation needs an extremely stable building ring
Border, and deep ocean work is not suitable for anchoring positioning, dynamic positioning system can only be used, so on the basis of platform dynamic positioning system
Upper its stability that improves is the most important thing that scholars study.
Wave has certain regularity, and the period is 0.5 ~ 25 second.Off-lying sea lacks anchor point, and it is not existing to establish anti-wave facility
It is real, even there is anti-wave facility, it is also desirable to which anti-wave erection of equipment on semisubmersible drilling platform, the kinetic energy of wave is finally gone back
It is to act on drilling platforms itself.
The present invention has motivation that part sea wave dynamic energy is converted into electric energy, rushes to reduce surge to semisubmersible drilling platform
It hits.About the equipment using wave-energy power generation, typically, such as Chinese patent literature CN108005840A or CN108691724A,
It uses buoyancy tank to push gear and rack teeth mechanism to move.The buoyancy that this kind of structure is mainly changed using Wave crest and wave trough is floating to push
Case, and it is also heaving that semisubmersible drilling platform is most scabrous, is influenced also very on the roll and pitch of semisubmersible drilling platform
It is limited.It about gear and rack teeth mechanism, is exposed in wave when in use, not only lubricating difficulties, but also anti-corrosion is difficult.Gear teeth
Linear motion can be converted into rotating by mechanism, but the variation of wave Wave crest and wave trough is a kind of reciprocal variation, and gear is driven
Current of electric output stability it is poor, and current direction changes, it is difficult to which rectification uses.
Summary of the invention
The purpose of the present invention is to provide a kind of the partly latent of roll and pitch that can be effectively reduced semisubmersible drilling platform
Formula drilling platforms lower box.
Embodiment according to the present invention, provides a kind of semisubmersible drilling platform lower box, and basic structure includes:
Main storehouse, provides closed cabin, and main storehouse is circumferentially provided with horizontal guide hole；
To flowing plate, be distributed in main storehouse periphery to set a distance at；
Mandril, in same level, each flowing plate of supporting at least is adapted to there are two mandril, and mandril and guide hole liquid sealing cooperation shape
At prismatic pair；
Resetting apparatus provides the power to flowing plate far from main storehouse direction；
Slider-crank mechanism is located in main storehouse, and the mandril is the driving link of the slider-crank mechanism, and mandril has determination
Impulse stroke；And
Generator is driven by the slider-crank mechanism.
Above-mentioned semisubmersible drilling platform lower box, optionally, mandril has two rows in the vertical direction.
Optionally, the resetting apparatus is the reset spring being sleeved on mandril, and one end top of the reset spring is held in master
The outer surface in storehouse, other end top are held in the medial surface for supporting flowing plate.
Optionally, the locating slot for the positioning of reset spring end is provided with for the position that back-moving spring top is held.
Optionally, main storehouse includes under overlooking state
Main body, the main body are rectangular configuration under overlooking state, have a pair of short edges and a pair of of long side；
End, the end are and to constitute the end at main body longitudinal direction both ends using aforementioned short side as the cup head of diameter；
Correspondingly, there are four pieces to flowing plate, a pair is that arc supports flowing plate, and another pair is to direct reach flowing plate；
Wherein, arc supports flowing plate and is laid in end side, directes reach flowing plate and is laid in long side.
It optionally, is that each slider-crank mechanism is equipped with a gas-tight silo in main storehouse.
Optionally, the crank of the slider-crank mechanism is furnished with a pair of bearings, and the both ends of crank respectively connect a generator；
The connecting rod of slider-crank mechanism is connect equipped with a pair, the separation of two connecting rods in the both sides of mandril, and with mandril.
Optionally, mandril and connecting rod pass through ox horn axis connection.
Optionally, it is equipped with a secondary storehouse in the downside in main storehouse, secondary storehouse geometry is similar to main storehouse under overlooking state, and big
In main storehouse；
Secondary storehouse and main storehouse are concentrically.
Optionally, secondary storehouse edge constitutes the inside stop for supporting flowing plate impulse stroke.
Semisubmersible drilling platform lower box according to an embodiment of the present invention will support flowing plate and be distributed in main storehouse periphery, directly support
The horizontal and vertical impact of wave is kept off, part sea wave energy is converted into the kinetic energy to flowing plate, flowing plate is supported and pushes mandril, mandril is constituted
The driving link of slider-crank mechanism, and by slider-crank mechanism driven generator, convert kinetic energy into electric energy.Based on the present invention
Embodiment, part sea wave energy can be converted into electric energy, on the one hand reduce the shadow to semisubmersible drilling platform roll and pitch
It rings, and the use for equipment on semisubmersible drilling platform can be produced electricl energy.Slider-crank mechanism has determining impulse stroke, and
And the present invention does not seek deliberately to convert more sea wave energies, and mandril impulse stroke is enable completely to complete, to guarantee
Slider-crank mechanism is rotated to same direction, guarantees the certainty of current direction.
Detailed description of the invention
Fig. 1 bows for semisubmersible drilling platform lower box in an embodiment and cuts open structural schematic diagram.
Fig. 2 is the schematic view of the front view of semisubmersible drilling platform lower box in an embodiment.
Fig. 3 is power generation system structure schematic diagram in an embodiment.
In figure: 1. stroke spaces, 2. keep away interference gap, and 3. mandrils, 4. power generation storehouses, 5. direct reach flowing plate, 6. reset springs, and 7.
Main storehouse, 8. secondary storehouses, 9. arcs support flowing plate, 10. generators, 11. ox horn axis, 12. crankshafts, 13. connecting rods, 14. bearing blocks.
Specific embodiment
In the construction shown in fig. 1, under overlooking state, the geometry in main storehouse 7 and secondary storehouse 8 is the waist type knot often said
Structure, i.e. the geometry assembly of a rectangle part and two semi-circular portions.
It is understood that main storehouse 7 is conventional structure in this field, and without secondary storehouse 8, by taking main storehouse 7 as an example, inside
Usually hole capital after selling all securities can pour into seawater to lower the center of gravity, improve the stability of semisubmersible drilling platform.
In addition, also will be installed some equipment in main storehouse 7, generally speaking, by there are multiple points of storehouses in main storehouse 7, partially divide storehouse
For pouring into or being discharged seawater, to adjust the height of semisubmersible drilling platform.
It is understood that the space enclosed by bulkhead is interior, it is outside, there is the inside and outside of determination on this basis outside storehouse.
In addition, main storehouse 7 is normally at underwater or part and is located under water, it may have determining up-down structure in orientation.
A kind of semisubmersible drilling platform lower box as shown in Figure 1, basic structure include a main storehouse 7 and are laid in master
The muti-piece of 7 periphery of storehouse supports flowing plate, and two pieces of arc supports flowing plate 9 and directes reach flowing plate 5 as illustrated in the drawing.In addition, supporting flowing plate passes through top
Bar 3 is mounted on the outside of main 7 bulkhead of storehouse, and mandril 3 provides guiding and transmission, wherein main 7 bulkhead of storehouse is provided with guide hole, and guide hole is level
Direction.Mandril 3 and guide hole cooperatively form prismatic pair, mandril 3 and matching for guide hole are combined into liquid sealing cooperation.
Liquid sealing cooperation is not required for absolutely tightly, including main storehouse 7, there is drainage system, to maintain water in main storehouse 7
The balance of amount, liquid sealing cooperation do not influence generator 10.
About main storehouse 7, based on content above-mentioned it is found that its cabin for constituting relative closure, consistent with conventional lower box,
Equipped with structure identical with conventional lower box and storehouse form can be divided.Main storehouse 7 is circumferential to be provided with horizontal guide hole.
In Fig. 1, two kinds are supported flowing plate and are distributed in 7 periphery of main storehouse, and are had between main storehouse 7 to set a distance, i.e. shown in Fig. 1
Stroke space 1, for determining the impulse stroke to flowing plate.
It is understood that the impulse stroke for supporting flowing plate is identical as the impulse stroke of slider in crank-slider mechanism, flowing plate is supported
Impulse stroke can be constrained by the mechanical properties of slider-crank mechanism, to reduce impact to agency node, to flowing plate
Impulse stroke can be limited by the component of static determinacy, the baffle being such as welded on main storehouse 7.
Baffle is mainly used for collar being arranged on mandril 3 for outside stop to the restriction of stop on the inside of flowing plate,
It is understood that collar is located at the interior end side of guide hole.
For mandril 3, in same level, it is each support flowing plate at least be adapted to there are two mandril 3, be, although ocean current
Direction certainty is stronger, but ocean current has a time-varying attribute, ocean current to supporting the impact force of flowing plate mostly not in the axial direction of mandril 3,
Therefore mandril 3 will receive the influence of harmful component, i.e., component axial perpendicular to mandril 3, which not only will affect mandril 3
Smoothness, and will lead to the too fast failure of mandril 3.
Two or more mandril 3 is conducive to improve the smoothness that mandril 3 moves, and matches mandril 3 with guide hole
The service life for closing structure is greatly improved.
Wave belongs to periodical wave, therefore it provides resetting apparatus, which, which provides, supports flowing plate far from main 7 side of storehouse
To power, i.e., when unrestrained peak comes, 3 work of mandril is into when unrestrained paddy comes, mandril 3 resets under the action of resetting apparatus.
About slider-crank mechanism, as previously mentioned, it has determining impulse stroke, and based on the general of machinery field
Reciprocating motion can be converted into continuously rotating by common sense, slider-crank mechanism.Typically, internal combustion engine is exactly that piston is (i.e. sliding
Block) reciprocating motion be converted into the continuous rotation to the same direction of crankshaft.
The impulse stroke of flowing plate is supported by constraining, and makes the crankshaft 12 of slider-crank mechanism that there is the continuous of determination to turn
Dynamic, crankshaft 12 is used as output link, and driven generator 10 generates electricity.
Correspondingly, slider-crank mechanism is located in main storehouse 7, and the mandril 3 is the driving link of the slider-crank mechanism, i.e. structure
It is connected as one at Slipper or Slipper.
There is certain height to flowing plate, and the pressure of surge in the vertical direction everywhere is not identical, for this purpose, from figure
It can be seen that, mandril 3 has two rows in the vertical direction in 2, to guarantee the smoothness of the movement of mandril 3, and makes whole knot
Structure is relatively reliable.
About resetting apparatus, it is preferable that the resetting apparatus as shown in Fig. 1 ~ 3 constitutes the reset spring 6 being sleeved on mandril 3,
Spring structure is simple, and stiffness factor is relatively stable, and is easy to calculate.
Spring mostly uses spring steel to make greatly, and in itself than ordinary steel more resistant to corrosion, but reset spring 6 is exposed to seawater
In, it is easy to be corroded.
Further, the surface of reset spring 6 should have corrosion-resistant finishes, can be formed based on spraying process, can also adopt
It is formed with plating, such as zinc coat.
Correspondingly, one end top of reset spring 6 is held in the outer surface in main storehouse 7, and other end top is held in the medial surface for supporting flowing plate,
It is understood that reset spring 6 is compressed spring.
Compressed spring can use cylindrical spring, can also select volute spring, if using volute spring, volute spring
Big end be located at main 7 side of storehouse.
Compressed spring is easy to unstability, and mandril 3 can play the role of spring guide pillar, but diameter should not be too large, therefore, bullet
The effect of spring guide post is relatively weak, further, is provided with to the position held is pushed up in flowing plate and main storehouse 7 for reset spring 6 for multiple
The end of the locating slot of position 6 end of spring positioning, reset spring 6 is embedded in locating slot, it is not easy to generate unstability, can guarantee mandril
The ride comfort of 3 operations.
In the construction shown in fig. 1, main storehouse 7 is integrally a waist type structure under overlooking state, can be understood as having
There are the main body an of rectangular configuration and each semicircular end at main body both ends.
Wherein, main body is a rectangular parallelepiped structure on the whole, under overlooking state be rectangular configuration, have a pair of short edges and
A pair of of long side, wherein short side and long side are opposite concepts, in lower box technical field, the length of the length of long side than short side
Greatly.
It is semi-cylindrical in configuration on the whole for end, is semicircle under overlooking state, the diameter of the end is aforementioned
Short side.
Correspondingly, as previously mentioned, supporting flowing plate has four pieces, a pair is that arc supports flowing plate 9, and another pair is to direct reach flowing plate 5, wherein
Arc supports flowing plate 9 and is laid in end side, directes reach flowing plate 6 and is laid in long side.
Relatively fewer to flowing plate quantity, in contrast, the pressure-bearing surface gross area is bigger, in addition, it is easier to support flowing plate for one
More mandril 3 is laid, if arc supports flowing plate 9, six mandrils 3 are laid in figure, stability is relatively good.
In addition, as shown in Figure 1, the periphery in main storehouse 7 is covered by flowing plate is supported other than keeping away interference gap 2.
Further, it is that each slider-crank mechanism is equipped with a gas-tight silo in main storehouse 7, constitutes independent instrument room, phase
Ying Di, generator 10 also are located at gas-tight silo.
In structure shown in Fig. 3, the crank of the slider-crank mechanism, i.e. crankshaft 12 shown in Fig. 3 is equipped with a pair
Bearing, bearing are mounted on bearing block 14 shown in figure, and the both ends of crank respectively connect a generator 12, and stress balance compares
It is good.
It further, is the balance for improving stress, the connecting rod 13 of slider-crank mechanism is equipped with a pair, the separation of two connecting rods 13
It is connect in the both sides of mandril, and with mandril.
Further, mandril 3 is connect with connecting rod 13 by ox horn axis 11, and rigidity is stronger.
Ox horn axis 11 is about the axis of d-axis both ends warpage, and rigidity is relatively high.
Further, be equipped with a secondary storehouse 8 in the downside in main storehouse 7, secondary 8 geometry of storehouse under overlooking state with main 7 phase of storehouse
Seemingly, and it is greater than main storehouse 7.When in use, main storehouse 7 is mainly as equipment compartment, and secondary storehouse 8 is mainly as water filling storehouse, to improve entirety
Stability.
In some embodiments, there are multiple points of storehouses in main storehouse 7, and partially a point storehouse is used as water filling storehouse, and storehouse is partially divided to be used as equipment compartment.
About geometric similarity, belong to the common sense in structure, details are not described herein.With this condition, secondary storehouse 8 and master
Storehouse 7 concentrically, forms Fig. 1 and structure shown in Fig. 2.
Further, secondary 8 edge of storehouse constitutes the inside stop for supporting flowing plate impulse stroke.
Claims (10)
1. a kind of semisubmersible drilling platform lower box characterized by comprising
Main storehouse, provides closed cabin, and main storehouse is circumferentially provided with horizontal guide hole；
To flowing plate, be distributed in main storehouse periphery to set a distance at；
Mandril, in same level, each flowing plate of supporting at least is adapted to there are two mandril, and mandril and guide hole liquid sealing cooperation shape
At prismatic pair；
Resetting apparatus provides the power to flowing plate far from main storehouse direction；
Slider-crank mechanism is located in main storehouse, and the mandril is the driving link of the slider-crank mechanism, and mandril has determination
Impulse stroke；And
Generator is driven by the slider-crank mechanism.
2. semisubmersible drilling platform lower box according to claim 1, which is characterized in that mandril has in the vertical direction
Two rows.
3. semisubmersible drilling platform lower box according to claim 1, which is characterized in that the resetting apparatus is to be sleeved on
One end top of reset spring on mandril, the reset spring is held in the outer surface in main storehouse, and other end top is held in the inside for supporting flowing plate
Face.
4. semisubmersible drilling platform lower box according to claim 3, which is characterized in that the position held for back-moving spring top
It is provided with the locating slot for the positioning of reset spring end.
5. semisubmersible drilling platform lower box according to claim 1, which is characterized in that main storehouse has under overlooking state
Have:
Main body, the main body are rectangular configuration under overlooking state, have a pair of short edges and a pair of of long side；
End, the end are and to constitute the end at main body longitudinal direction both ends using aforementioned short side as the cup head of diameter；
Correspondingly, there are four pieces to flowing plate, a pair is that arc supports flowing plate, and another pair is to direct reach flowing plate；
Wherein, arc supports flowing plate and is laid in end side, directes reach flowing plate and is laid in long side.
6. semisubmersible drilling platform lower box according to claim 1, which is characterized in that be each slide crank in main storehouse
Block mechanism is equipped with a gas-tight silo.
7. semisubmersible drilling platform lower box according to claim 6, which is characterized in that the song of the slider-crank mechanism
Handle is furnished with a pair of bearings, and the both ends of crank respectively connect a generator；
The connecting rod of slider-crank mechanism is connect equipped with a pair, the separation of two connecting rods in the both sides of mandril, and with mandril.
8. semisubmersible drilling platform lower box according to claim 7, which is characterized in that mandril and connecting rod pass through ox horn axis
Connection.
9. semisubmersible drilling platform lower box according to claim 1, which is characterized in that it is secondary to be equipped with one in the downside in main storehouse
Storehouse, secondary storehouse geometry is similar to main storehouse under overlooking state, and is greater than main storehouse；
Secondary storehouse and main storehouse are concentrically.
10. semisubmersible drilling platform lower box according to claim 9, which is characterized in that secondary storehouse edge, which is constituted, supports flowing plate
The inside stop of impulse stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811359118.8A CN109229294B (en) | 2018-11-15 | 2018-11-15 | Semi-submersible drilling platform lower box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811359118.8A CN109229294B (en) | 2018-11-15 | 2018-11-15 | Semi-submersible drilling platform lower box |
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| CN109229294A true CN109229294A (en) | 2019-01-18 |
| CN109229294B CN109229294B (en) | 2024-05-24 |
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| CN107140139A (en) * | 2017-05-23 | 2017-09-08 | 江苏科技大学 | A kind of composite floating box anticollision device, collision-prevention device suitable for ultra deepwater drilling platform |
| CN107795432A (en) * | 2017-10-18 | 2018-03-13 | 大连理工大学 | Based on the vertical level two of single pile platform to wave-energy power generation structure |
| CN207328776U (en) * | 2017-10-30 | 2018-05-08 | 韩文级 | Steamer changes swingboat person and saves oneself and typhoon power generator windward |
| CN207349014U (en) * | 2017-11-01 | 2018-05-11 | 韩猛 | A kind of novel liquefied natural gas receiving station power generation with sea water system |
| CN207750172U (en) * | 2017-12-17 | 2018-08-21 | 周文正 | Free float type Wave energy converting device |
| CN209096964U (en) * | 2018-11-15 | 2019-07-12 | 济南大学 | Semisubmersible drilling platform lower box |
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