CN113266640A - Main bearing system for single-upright-column mooring production system - Google Patents
Main bearing system for single-upright-column mooring production system Download PDFInfo
- Publication number
- CN113266640A CN113266640A CN202110480410.0A CN202110480410A CN113266640A CN 113266640 A CN113266640 A CN 113266640A CN 202110480410 A CN202110480410 A CN 202110480410A CN 113266640 A CN113266640 A CN 113266640A
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- Prior art keywords
- bearing
- stud
- stator
- production system
- main bearing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/50—Other types of ball or roller bearings
- F16C19/505—Other types of ball or roller bearings with the diameter of the rolling elements of one row differing from the diameter of those of another row
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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- 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
- B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]
Abstract
The invention relates to the technical field of petroleum engineering, in particular to a main bearing system for a single-upright-column mooring production system, which has a simple structure and is convenient to replace and maintain, and comprises a bearing stud, a locking nut, a rotary support bearing, a stator and a rotor; the rotary support bearing outer ring is fixedly connected with the rotor through the bearing stud and the locking nut, the rotary support bearing inner ring is fixedly connected with the stator through the bearing stud and the locking nut, the stator is fixedly connected with the central column, the stator and the ground are relatively static, the rotor rotates 360 degrees around the stator, and the rotary support bearing is simple in structure, high in rotary precision, convenient to disassemble and assemble the bearing stud and easy to replace and maintain.
Description
Technical Field
The invention relates to the technical field of petroleum engineering, in particular to a main bearing system for a single-upright-column mooring production system.
Background
The small marginal oil fields in the Bohai sea area are numerous, the total reserve is huge, the characteristics of geological oil reservoirs such as structural breakage, fracture development, complex oil reservoir and the like are realized, the development uncertainty is high, and the engineering investment is not suitable and too high. Because the flexible riser can not adapt to the ultra-shallow water with the water depth of less than 50 meters (the flexible riser needs to keep the designed specific shape to avoid overload, which is not easy to realize in shallow water), the Floating Production Storage and Offloading (FPSO) can not be positioned by using the traditional catenary mooring system, in order to fully develop the small marginal oil field, the total life cycle cost of drilling, well repairing, construction, installation, Production, operation and maintenance is reduced by simplifying the platform design, the engineering benefit is improved, and the economic development of the small marginal oil field is realized. The single-upright mooring system is designed and developed. The design and development of the main bearing system are particularly important as a core component of the single-column mooring system. The existing main bearing system is complex in structure and not easy to replace and maintain.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a main bearing system for a single-upright mooring production system, which is simple in structure and convenient to replace and maintain.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a main bearing system for a single-upright mooring production system comprises a bearing stud, a locking nut, a rotary support bearing, a stator and a rotor; the rotary support bearing outer ring is fixedly connected with the rotor through the bearing stud and the locking nut, the rotary support bearing inner ring is fixedly connected with the stator through the bearing stud and the locking nut, the stator is fixedly connected with the central column, the stator and the ground are relatively static, the rotor rotates 360 degrees around the stator, and the rotary support bearing is simple in structure, high in rotary precision, convenient to disassemble and assemble the bearing stud and easy to replace and maintain.
Further, the slewing bearing adopts three rows of roller bearings capable of bearing axial load, overturning moment and radial load at the same time.
Furthermore, two groups of rollers a for bearing axial load and overturning moment are horizontally arranged on the axis of the rotary supporting bearing, one group of rollers b capable of bearing radial load is vertically arranged on the axis, and the bearing can bear large load, can rotate and rotate repeatedly and the like.
Furthermore, the main bearing system further comprises a core supplementing nut, the core supplementing nut is arranged at the other end, opposite to the locking nut, of the bearing stud, the external thread of the core supplementing nut is fixedly connected with the stator and the rotor, the bearing stud is arranged in the core supplementing nut opposite to the other end of the locking nut, the core supplementing nut is convenient to fix and disassemble, the bearing stud is convenient to disassemble and assemble, the contact area (threads and bottom surface) between the bearing stud and the stator and between the bearing stud and the rotor is increased, and stress is reduced.
Furthermore, the main bearing system for the single-upright mooring production system further comprises a waterproof cover plate assembly, wherein the waterproof cover assembly is arranged above the rotary supporting bearing and used for separating the bearing from the external environment, protecting the bearing, and a fastener and a supporting casting contact surface which are attached to the surface of the bearing.
Furthermore, the periphery of the rotor is connected with a plurality of cantilevers, preferably four cantilevers, the cantilevers are connected with the rotary table, and the cantilevers are used for providing support for the rotary table and the hose tower and enabling the cantilevers to rotate around the central column along with the rotor.
Compared with the prior art, the main bearing system for the single-upright-column mooring production system is connected with the FPSO floating oil storage ship through the soft rigid arm system, and the mooring force of the FPSO is transmitted to the central tower through the soft rigid arm system, so that the FPSO can rotate around the central tower for 360 degrees under the action of wind, wave and ocean current. By adopting the principle of a wind vane, the FPSO or other ocean facilities are positioned at the downwind and downstream positions, so that the stress condition of the system is improved, and the stress of the FPSO or other ocean facilities is minimized, thereby ensuring that the FPSO or other ocean facilities can continuously operate for a long time on the sea and can bear the vertical load, the radial load, the overturning moment and the like generated by mooring the FPSO; the whole structure is reasonable in design, and is convenient to operate and maintain.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a top view of the present invention;
fig. 3 is an enlarged view of a portion of the structure of the present invention.
In the figure, a waterproof cover plate assembly 1, a bearing stud 2, a locking nut 3, a rotary support bearing 4, a stator 5, a bushing nut 6, a rotor 7, a central column 8, a roller a9, a roller b10, a soft rigid arm 11, a cantilever 12 and a flange 13.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings of the specification.
Example 1:
the main bearing system for the single-upright-column mooring production system comprises a waterproof cover plate assembly 1, a bearing stud 2, a locking nut 3, a rotary supporting bearing 4, a stator 5, a bushing nut 6 and a rotor 7.
The slewing bearing 4 adopts three rows of roller bearings, two groups of rollers a9 are horizontally arranged on the axis, one group of rollers b10 are vertically arranged on the axis, the three rows of roller bearings can simultaneously bear axial load, overturning moment and radial load, wherein the axial load and the overturning moment are borne by two groups of rollers a9 horizontally arranged on the axis, the radial load is borne by one group of rollers b10 vertically arranged on the axis, and the bearing can bear large load, can rotate and rotate repeatedly and the like, and has high slewing precision.
A rotor 7 fixed to an outer ring of the slewing bearing 4 and rotating around the stator 5; the rotor 7 adopts a V-shaped structure and is fixedly connected with the soft rigid arm 11. The V-shaped structure is adopted, so that the positioning contact area is large, contact inequality is not caused by stress or other reasons, and axial load and radial load can be borne simultaneously.
The periphery of the rotor 7 is connected with four cantilevers 12, the four cantilevers 12 are connected with a rotary table, and the four cantilevers 12 are used for providing support for the rotary table and a hose tower and enabling the rotor 7 to rotate around the central column 8 together. The joint of the cantilever 12 and the rotary table is provided with a flange 13 with a spigot, and the flange is convenient to detach, mount and position, the two flange locking bolts only bear axial force, and the spigot part bears torque.
The stator 5, stator 5 and the inner ring of the support bearing 4 are connected, the stator 5 and the upper and lower parts of the central column 8 are fixedly connected, and the relative rest with the ground is realized.
The bearing stud 2 is a stud or a stud, and the bottom of the stator 5 and the bottom of the rotor 7 are small in dismounting space, so that the bearing stud is convenient to replace and maintain due to the stud structure.
And the locking nut 3 is used for connecting and fixing the stator 5 and the rotor 7 with the rotary support bearing 4 respectively.
The core-supplementing nut 6 is used for improving the strength of a connecting thread with the bearing stud 2, the external thread of the core-supplementing nut 6 is fixed with the stator 5 and the rotor 7, and the internal thread of the core-supplementing nut 6 is in threaded connection with the other end of the bearing stud 2 relative to the locking nut 3, so that the core-supplementing nut 6 is convenient to fix and the bearing stud 2 is convenient to disassemble and assemble; secondly, the contact area (the thread and the bottom surface) between the stator and the rotor is increased, and the stress is reduced.
The main bearing system is used as a core component of a single-upright mooring system, and the main bearing system is mainly connected with an FPSO floating oil storage ship through a soft rigid arm system, and transmits mooring force of the FPSO to a central tower through the soft rigid arm system, so that the FPSO can rotate around the central tower for 360 degrees under the action of wind, wave and ocean current. The wind vane principle is adopted, so that the FPSO or other marine facilities are positioned at the downwind and downstream positions, the stress condition of the system is improved, and the stress of the FPSO or other marine facilities is minimized, thereby ensuring that the FPSO or other marine facilities can continuously operate for a long time on the sea and can bear the vertical load, the radial load, the overturning moment and the like generated by mooring the FPSO.
The above embodiments are only specific examples of the present invention, and the protection scope of the present invention includes but is not limited to the product forms and styles of the above embodiments, and any suitable changes or modifications made by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a main bearing system for single column mooring production system which characterized in that: the device comprises a bearing stud, a locking nut, a rotary support bearing, a stator and a rotor; the outer ring of the rotary supporting bearing is fixedly connected with the rotor through a bearing stud and a locking nut, the inner ring of the rotary supporting bearing is fixedly connected with the stator through a bearing stud and a locking nut, and the stator is fixedly connected with the central column.
2. The main bearing system for a single column mooring production system according to claim 1, wherein: the slewing bearing adopts three rows of roller bearings capable of bearing axial load, overturning moment and radial load at the same time.
3. The main bearing system for a single column mooring production system according to claim 2, wherein: two groups of rollers a for bearing axial load and overturning moment are horizontally arranged on the axis of the rotary supporting bearing, and a group of rollers b capable of bearing radial load is vertically arranged on the axis.
4. The main bearing system for a single column mooring production system according to claim 1, 2 or 3, wherein: the main bearing system further comprises a core supplementing nut, the core supplementing nut is arranged at the other end, opposite to the locking nut, of the bearing stud, the external thread of the core supplementing nut is fixedly connected with the stator and the rotor, and the other end, opposite to the locking nut, of the bearing stud is arranged in the core supplementing nut.
5. The main bearing system for a single column mooring production system according to claim 4, wherein: the periphery of the rotor is connected with the cantilever and the rotary table through the cantilever.
6. The main bearing system for a single column mooring production system according to claim 1, 2, 3 or 5, wherein: the bearing stud is a stud.
7. The main bearing system for a single column mooring production system according to claim 1, 2, 3 or 5, wherein: the bearing stud is a single-end stud.
8. The main bearing system for a single column mooring production system according to claim 6, wherein: and the internal thread of the bushing nut is in threaded connection with the other end of the bearing stud relative to the locking nut.
9. The main bearing system for a single column mooring production system according to claim 1, 2, 3 or 5, wherein: still include waterproof cover plate assembly, waterproof cover assembly sets up in slewing bearing top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110480410.0A CN113266640B (en) | 2021-04-30 | 2021-04-30 | Main bearing system for single-column mooring production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110480410.0A CN113266640B (en) | 2021-04-30 | 2021-04-30 | Main bearing system for single-column mooring production system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113266640A true CN113266640A (en) | 2021-08-17 |
| CN113266640B CN113266640B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110480410.0A Active CN113266640B (en) | 2021-04-30 | 2021-04-30 | Main bearing system for single-column mooring production system |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1889779A1 (en) * | 2006-08-15 | 2008-02-20 | Bluewater Energy Services B.V. | Roller bearing system for mounting a turret in a vessel |
| US20090324151A1 (en) * | 2008-06-30 | 2009-12-31 | Nucor Corporation | Slew bearing system |
| US20100012010A1 (en) * | 2008-07-17 | 2010-01-21 | Bluewater Energy Services B.V. | Mooring assembly |
| CN205401445U (en) * | 2016-03-03 | 2016-07-27 | 中国港湾工程有限责任公司 | Slewing main bearing of single -point mooring system |
| US10183727B1 (en) * | 2017-10-04 | 2019-01-22 | Sofec, Inc. | In-situ turret bearing repair and assembly |
| US20190144077A1 (en) * | 2017-11-15 | 2019-05-16 | Sofec, Inc. | In situ turret bearing remediation and assembly |
-
2021
- 2021-04-30 CN CN202110480410.0A patent/CN113266640B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1889779A1 (en) * | 2006-08-15 | 2008-02-20 | Bluewater Energy Services B.V. | Roller bearing system for mounting a turret in a vessel |
| US20090324151A1 (en) * | 2008-06-30 | 2009-12-31 | Nucor Corporation | Slew bearing system |
| US20100012010A1 (en) * | 2008-07-17 | 2010-01-21 | Bluewater Energy Services B.V. | Mooring assembly |
| CN205401445U (en) * | 2016-03-03 | 2016-07-27 | 中国港湾工程有限责任公司 | Slewing main bearing of single -point mooring system |
| US10183727B1 (en) * | 2017-10-04 | 2019-01-22 | Sofec, Inc. | In-situ turret bearing repair and assembly |
| US20190144077A1 (en) * | 2017-11-15 | 2019-05-16 | Sofec, Inc. | In situ turret bearing remediation and assembly |
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| Publication number | Publication date |
|---|---|
| CN113266640B (en) | 2023-08-15 |
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