CN221002708U - Hole protection sleeve retraction device for jack-up type exploration platform - Google Patents
Hole protection sleeve retraction device for jack-up type exploration platform Download PDFInfo
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- CN221002708U CN221002708U CN202322407565.9U CN202322407565U CN221002708U CN 221002708 U CN221002708 U CN 221002708U CN 202322407565 U CN202322407565 U CN 202322407565U CN 221002708 U CN221002708 U CN 221002708U
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- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005070 sampling Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
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Abstract
The utility model provides a protection hole sleeve retraction device for a self-elevating exploration platform, which is characterized in that a lifting assembly, a guide assembly and a locking assembly are arranged on a main deck of the exploration platform, the lifting assembly and the guide assembly are arranged around a moon pool and are simultaneously matched with a sleeve frame capable of lifting through the moon pool, chords are arranged in the vertical direction of the periphery of the sleeve frame, locking parts are arranged on the outer surfaces of the chords, and guide columns or racks which are vertically arranged are also arranged on the outer surfaces of the chords in different directions; the lifting assembly comprises a lifting seat arranged above the main deck, and a lifting unit in transmission fit with the rack is arranged on the lifting seat; the guide assembly is provided with a guide seat above the main deck, wherein the guide seat can be matched with the guide pillar. The utility model can reduce or avoid the possibility of inclination of the casing frame affected by water flow impact, and can ensure smooth and safe retraction operation of the hole-protecting casing frame.
Description
Technical Field
The utility model relates to the technical field of marine exploration drilling, in particular to a hole protection sleeve retraction device for a self-elevating exploration platform.
Background
Offshore exploration refers to drilling and sampling processes performed to ascertain the geology of offshore wind farms, submarine tunnels, bridges, and other ocean projects, as well as to ascertain the type, reserves, and distribution of offshore resources.
When the offshore exploration operation is carried out, the drill rod needs to be drilled into the seabed to a certain depth, but is easily influenced by hydrometeorological factors such as sea waves, tides, water flow, weather and the like during exploration sampling, so that the drill rod is damaged or can not be lowered to a river bed to finish the exploration operation, and therefore the drill rod needs to be lowered down to the protection hole casing frame to isolate the sea water so as to ensure that the drill rod is smoothly lowered to the seabed. However, under the influence of the above factors, if the operation difficulty is greater due to the fact that the operation area especially relates to sea conditions of large water depth and high flow velocity, the hole-protecting casing frame structure is also very easy to incline due to the impact force of water flow, and the lifting capacity of the hole-protecting casing frame cannot effectively meet the corresponding retraction operation, so that the safety of the hole-protecting casing frame operation cannot be met, and the hole-protecting casing frame cannot be retracted smoothly.
Disclosure of utility model
The utility model aims to provide a retraction device for effectively guaranteeing retraction safety and stability of a hole protection casing frame.
For this purpose, the utility model adopts the following technical scheme:
The lifting assembly and the guide assembly are arranged around the moon pool and are matched with a casing frame capable of lifting through the moon pool, chords are arranged in the vertical direction of the periphery of the casing frame, locking parts are arranged on the outer surfaces of the chords, and guide columns or racks which are vertically arranged are also arranged on the outer surfaces of the chords in different directions; the lifting assembly comprises a lifting seat arranged above the main deck, and a lifting unit in transmission fit with the rack is arranged on the lifting seat; the guide assembly is provided with a guide seat which can be matched with the guide post above the main deck; the locking assembly is provided with a locking arm in the moon pool, the distance between the locking arm and the chord member is adjustable, and the locking arm can form a contact locking state on the chord member locking part.
Further: the casing frame is of a triangular truss structure, and three chords are correspondingly arranged on the periphery of the casing frame.
Further: the casing frames can be spliced to form a plurality of groups in the lifting direction of the moon pool, so that an integral casing frame group is formed.
Further: the adjacent casing frames are connected through bolts, and the adjacent casing frames are connected end to end in sequence.
Further: the lifting unit comprises a gear arranged in the lifting seat, the gear is meshed with a rack on the chord member, a variable frequency motor is arranged on the lifting seat, and the output end of the variable frequency motor is connected with the gear.
Further: the lifting unit is internally provided with a reduction gearbox connected with the variable frequency motor.
Further: the guide seat is internally provided with a guide wheel, and the outer surface of the guide wheel is in contact fit with the guide post.
Further: the locking arm is provided with a support in the moon pool, and the support is hinged with the cantilever section of the locking arm.
Further: the cantilever section tip of locking arm is provided with the pulley, the pulley can laminate with the locking portion of chord member.
Further: the locking assembly comprises a locking wheel assembly arranged above the main deck, a screw rod is connected to the locking wheel assembly on the main deck, one end of the screw rod is connected with a locking wheel located above the main deck, the other end of the screw rod stretches into the moon pool and is connected with a steel wire rope, and the other end of the steel wire rope is connected with a locking arm.
Compared with the prior art, the utility model has the following beneficial effects:
According to the utility model, the lifting assembly and the guiding assembly are used for matching peripheral chords of the casing frame, the casing frame can be reduced from shaking under the action of the guiding assembly, meanwhile, the casing frame is guided to lift, the lifting of the casing frame is controlled through the matching action of the lifting assembly and the locking assembly, and the locking arm can be used for attaching chord locking parts of the casing frame which stops lifting, so that all azimuth parts of the casing frame in a moon pool are effectively controlled, the possibility that the casing frame is inclined under the influence of water flow impact is reduced or avoided, and smooth and safe retraction operation of the casing frame with a protective hole can be ensured.
Drawings
FIG. 1 is a schematic diagram of the main structure of the present utility model;
FIG. 2 is a schematic view of the guide assembly of the present utility model;
FIG. 3 is a schematic view of the structure of the connection between adjacent cannula holders of the present utility model;
FIG. 4 is a schematic view of the structure of the locking assembly of the present utility model in cooperation with a cannula housing set;
Fig. 5 is a schematic view of the structure of the locking assembly of the present utility model.
The marks in the drawings are: cannula housing group 1, cannula housing 11, chord member 12, bolt 13, lifting assembly 2, lifting unit 21, gear 211, rack 22, lifting seat 23, guiding assembly 3, guiding seat 31, guiding wheel 32, guiding post 33, locking assembly 4, locking wheel assembly 41, locking wheel 411, screw 412, locking arm 42, pulley 421, support 422, wire rope 43, main deck 5, moon pool 6.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.
1-5, A hole protection sleeve retraction device for a jack-up exploration platform is provided, wherein a lifting assembly 2, a guide assembly 3 and a locking assembly 4 are arranged on a main deck 5 of the exploration platform, the lifting assembly 2 and the guide assembly 3 are arranged around a moon pool 6 and are simultaneously matched with a sleeve frame 11 which can be lifted by the moon pool 6, chords 12 are arranged in the vertical direction of the periphery of the sleeve frame 11, locking parts are arranged on the outer surfaces of the chords 12, and guide columns 33 or racks 22 which are vertically arranged are also arranged on the outer surfaces of the chords 12 in different directions; the lifting assembly 2 comprises a lifting seat 23 arranged above the main deck 5, and a lifting unit 21 in transmission fit with the rack 22 is arranged on the lifting seat 23; the guide assembly 3 is provided with a guide seat 31 which can be matched with the guide pillar 33 above the main deck 5; each chord member 12 is provided with a locking assembly 4, the locking assembly 4 is provided with a locking arm 42 in the moon pool 6, and the distance between the locking arm 42 and the chord member 12 can be adjusted, so that the locking arm 42 can form a contact locking state for the locking part of the chord member 12.
As shown in fig. 1-3, specifically, the casing frame 11 is a triangular truss structure, and is welded by three chords 12. In this embodiment, two chords 12 of the three chords 12 are provided with racks 22 on their outer surfaces, and the other chord 12 is provided with guide posts 33 on its outer surface, and accordingly two sets of lifting assemblies 2 and guide assemblies 3 are arranged on the main deck 5.
Wherein, the casing 11 can be spliced to form a plurality of casing groups 1 with sufficient length in the lifting direction of the moon pool 6. Adjacent casing frames 11 are connected through bolts 13, the adjacent casing frames 11 are connected end to end in sequence, racks 22 on the upper casing frame 11 effectively continue racks 22 on the lower casing frame 11, and guide posts 33 are effectively continued.
As shown in fig. 1-2, specifically, the lifting unit 21 includes a gear 211 disposed in the lifting seat 23, the gear 211 is meshed with the rack 22 on the chord member 12, the lifting seat 23 is provided with a variable frequency motor, and an output end of the variable frequency motor is connected with the gear 211. The lifting unit 21 is provided therein with a reduction gearbox connected to the variable frequency motor. When operation of lifting assembly 2 is suspended, the motor's own brake is closed, enabling cannula housing 11 to be secured for the top cannula housing 11 removal and installation.
As shown in fig. 1-3, specifically, a guide wheel 32 is disposed in the guide seat 31, and the outer surface of the guide wheel 32 is in contact fit with the guide post 33. Guide wheel 32, by abutting against guide post 33, can provide guidance for lifting and lowering of casing frame 11 while reducing shaking of casing frame 11;
In this embodiment, the guide wheel 32 and the lifting unit 21 may be disposed at intervals in the lifting direction of the cannula housing 11, and preferably two sets may be used.
As shown in fig. 4 to 5, in particular, the locking arm 42 is provided with a support 422 in the moon pool 6, and the support 422 is hinged to the cantilever section of the locking arm 42, so that the cantilever section of the locking arm 42 can swing up and down in the moon pool 6 to adjust the distance between the pulley 421 and the locking portion of the chord member 12. The end of the cantilever section of the locking arm 42 is provided with a pulley 421, and the pulley 421 is tightly attached to the locking part of the chord member 12, so as to reduce vibration of the casing frame 11 when the drill rod rotates. The surface of the pulley 421 is provided with an arc surface matched with the outer surface of the chord member 12, so that the contact area can be further increased to achieve a corresponding locking effect.
The locking assembly 4 comprises a locking wheel assembly 41 arranged above the main deck 5, a screw rod 412 is connected to the locking wheel assembly 41 on the main deck 5, a locking wheel 411 located above the main deck 5 is connected to the upper end of the screw rod 412, a steel wire rope 43 is connected to the lower end of the screw rod 412 extending into the moon pool 6, a rotary shackle connected with the steel wire rope 43 is mounted at the lower end of the screw rod 412, the other end of the steel wire rope 43 is connected with a locking arm 42, and a lock catch connected with the steel wire rope 43 can be arranged at the top of a cantilever section of the locking arm 42.
Referring to fig. 1-5, when the retraction device performs retraction operation on the cannula rack set 1 on the exploration platform, the specific manner is as follows:
When the exploration platform is shifted offshore, a number of casing frames 11 are stored on the deck of the platform. When the platform runs to the sea area to be detected, the water depth, the tidal range change and the platform climbing height are measured through the depth finder, the distance between the casing frame 11 and the sea floor before the casing frame descends is calculated, and the number of casings required for casing mud entering is calculated according to the length of a single casing.
Subsequently, the first cannula housing 11 is installed in the moon pool 6. Actuation of the lifting unit 21 of the lifting assembly 2 causes the two sets of gears 211 to simultaneously rotate, thereby causing the two racks 22 mounted on the chords 12 on both sides of the cannula housing 11 to rotate and cause the cannula housing 11 to move downward. Guide wheel 32 of guide assembly 3 is always closely attached to guide post 33 mounted on chord 12 on the other side of casing frame 11 in the descending process, so that casing frame 11 is guaranteed to be lowered vertically and shaking is reduced.
When first cannula housing 11 is lowered to the prescribed depth, operation of lift assembly 2 is suspended, and first cannula housing 11 is secured by automatic closing of the motor's own brake within lift unit 21. Second cannula housing 11 is lifted so that the bottom of second cannula housing 11 is aligned with the top of first cannula housing 11, two cannula housings 11 are fixedly connected by bolts 13, and lifting assembly 2 is again activated to complete lowering of cannula housing 11. Subsequent extension of cannula housing 11 is consistent with the above until cannula housing 11 is lowered to the specified depth.
When the casing frame 11 descends to the proper position, the locking wheel 411 installed on the main deck 5 is adjusted, the locking wheel 411 drives the locking arm 42 through the steel wire rope 43 to move towards the direction close to the upper chord 12 of the casing frame 11, and finally the pulley 421 is tightly attached to the chord 12, so that vibration of the casing frame 11 when the drill rod rotates is reduced.
At this time, the drill rod is extended from the casing frame to the seabed, and a series of exploration sampling operations are performed.
When the exploration operation is completed, the drill rod is extracted from the casing rack 11 arranged in connection therewith. Locking wheel 411 is again adjusted to release locking arm 42 from cannula housing 11, and then lift assembly 2 is activated to begin lifting cannula housing 11, and after lifting to one cannula housing 11 length, lift assembly 2 is suspended and cannula housing 11 is secured, and removal of single cannula housing 11 is accomplished by tightening of removal bolts 13. Repeating the above operation until the complete disassembly of all the casing frames 11 is completed, and finally completing the retraction operation of the casing frames 11.
The above embodiment is only one preferred technical solution of the present utility model, and it should be understood by those skilled in the art that modifications and substitutions can be made to the technical solution or parameters in the embodiment without departing from the principle and essence of the present utility model, and all the modifications and substitutions are covered in the protection scope of the present utility model.
Claims (10)
1. A protection hole sleeve pipe receive and releases device for jack-up exploration platform, its characterized in that: the method comprises the steps that a lifting assembly (2), a guide assembly (3) and a locking assembly (4) are arranged on a main deck (5) of an exploration platform, the lifting assembly (2) and the guide assembly (3) are arranged around a moon pool (6) and are simultaneously matched with a casing frame (11) capable of lifting through the moon pool (6), chords (12) are arranged in the vertical direction of the periphery of the casing frame (11), locking parts are arranged on the outer surfaces of the chords (12), and guide columns (33) or racks (22) which are vertically arranged are further arranged on the outer surfaces of the chords (12) in different directions;
The lifting assembly (2) comprises a lifting seat (23) arranged above the main deck (5), and a lifting unit (21) in transmission fit with the rack (22) is arranged on the lifting seat (23); the guide assembly (3) is provided with a guide seat (31) which can be matched with the guide column (33) above the main deck (5); the locking assembly (4) is characterized in that a locking arm (42) is arranged in the moon pool (6), the distance between the locking arm (42) and the chord member (12) is adjustable, and the locking arm (42) can form a contact locking state on the locking part of the chord member (12).
2. The hole casing retrieving and releasing device for a jack-up exploration platform according to claim 1, wherein: the sleeve frame (11) is of a triangular truss structure, and three chords (12) are correspondingly arranged on the periphery of the sleeve frame (11).
3. The hole casing retrieving and releasing device for a jack-up exploration platform according to claim 1, wherein: the casing frames (11) can be spliced to form a plurality of groups in the lifting direction of the moon pool (6) to form an integral casing frame group (1).
4. A grommet housing arrangement for a jack-up survey platform as in claim 3, wherein: the adjacent casing frames (11) are connected through bolts (13), and the adjacent casing frames (11) are connected end to end in sequence.
5. The hole casing retrieving and releasing device for a jack-up exploration platform according to claim 1, wherein: the lifting unit (21) comprises a gear (211) arranged in a lifting seat (23), the gear (211) is meshed with a rack (22) on the chord member (12), a variable frequency motor is arranged on the lifting seat (23), and the output end of the variable frequency motor is connected with the gear (211).
6. The hole casing retrieving and releasing device for a jack-up type exploration platform according to claim 5, wherein: the lifting unit (21) is internally provided with a reduction gearbox connected with the variable frequency motor.
7. The hole casing retrieving and releasing device for a jack-up exploration platform according to claim 1, wherein: a guide wheel (32) is arranged in the guide seat (31), and the outer surface of the guide wheel (32) is in contact fit with the guide post (33).
8. The hole casing retrieving and releasing device for a jack-up exploration platform according to claim 1, wherein: the locking arm (42) is provided with a support (422) in the moon pool (6), and the support (422) is hinged with the cantilever section of the locking arm (42).
9. The hole casing retrieving and releasing device for a jack-up exploration platform according to claim 1, wherein: the end part of the cantilever section of the locking arm (42) is provided with a pulley (421), and the pulley (421) can be attached to the locking part of the chord member (12).
10. The hole casing retrieving and releasing device for a jack-up type exploration platform according to claim 8, wherein: the locking assembly (4) comprises a locking wheel assembly (41) arranged above the main deck (5), the locking wheel assembly (41) is connected with a screw rod (412) on the main deck (5), one end of the screw rod (412) is connected with a locking wheel (411) positioned above the main deck (5), the other end of the screw rod (412) stretches into a moon pool (6) and is connected with a steel wire rope (43), and the other end of the steel wire rope (43) is connected with a locking arm (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322407565.9U CN221002708U (en) | 2023-09-05 | 2023-09-05 | Hole protection sleeve retraction device for jack-up type exploration platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322407565.9U CN221002708U (en) | 2023-09-05 | 2023-09-05 | Hole protection sleeve retraction device for jack-up type exploration platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221002708U true CN221002708U (en) | 2024-05-24 |
Family
ID=91117758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322407565.9U Active CN221002708U (en) | 2023-09-05 | 2023-09-05 | Hole protection sleeve retraction device for jack-up type exploration platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221002708U (en) |
-
2023
- 2023-09-05 CN CN202322407565.9U patent/CN221002708U/en active Active
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