CN112977721A - Simple single-point mooring main bearing with locking function - Google Patents
Simple single-point mooring main bearing with locking function Download PDFInfo
- Publication number
- CN112977721A CN112977721A CN201911303227.2A CN201911303227A CN112977721A CN 112977721 A CN112977721 A CN 112977721A CN 201911303227 A CN201911303227 A CN 201911303227A CN 112977721 A CN112977721 A CN 112977721A
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- ring
- locking
- main bearing
- point mooring
- single point
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- 238000005096 rolling process Methods 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims description 13
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- B63B21/507—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers with mooring turrets
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a simple single-point mooring main bearing with a locking function, which is used for being connected with a turret and comprises: the outer ring is sleeved on the outer side wall of the inner ring, a rolling assembly is arranged between the outer ring and the inner ring, the locking assembly comprises a plurality of outer lock bodies arranged on the outer ring, a plurality of inner lock bodies arranged on the inner ring and a locking piece, outer locking grooves and inner locking grooves which are identical in structure are respectively arranged on the side faces, opposite to each other, of the outer lock bodies and the inner lock bodies, and the locking piece is embedded in the outer locking grooves and the inner locking grooves after the inner lock bodies rotate for a preset angle. The main bearing with single point mooring can quickly complete the locking and unlocking process of the main bearing, is convenient for transportation and installation operation of the FPSO turret, has compact structure, easy arrangement and low maintenance cost, and is beneficial to application and popularization of a main bearing locking system with single point mooring.
Description
Technical Field
The invention relates to the field of ocean oil and gas development, in particular to a simple single-point mooring main bearing with a locking function.
Background
Single point mooring means that the marine engineering vessel is moored on another fixed or floating structure in a single point manner, the vessel can make 360-degree rotation around the structure along with wind, waves, currents and the like, and the moored vessel can be moored in the position with the minimum environmental force due to the weathervaning effect. The single point mooring system is commonly used in offshore oil field development operations and in place of the crude oil unloading terminal of a fixed terminal, and the main bearing is the most central and critical component of the single point mooring system and functions to release the fixed axis rotational freedom between the turret and the FPSO while limiting the relative motion of the other 5 degrees of freedom.
The main bearings of the FPSO turret are typically roller slewing bearings (sliding roller bearings). The support of the main bearing is composed of castings which are divided into a rotating casting and a fixed casting, wherein the fixed casting is welded with a turntable connected with a mooring cable, and the rotating casting and the FPSO are kept relatively fixed through special connection. In addition, the main bearing contains a lubricating system and an oil leakage recovery system.
When the turret of the FPSO is installed, the rotational freedom degree of the turret needs to be locked, and the turret is not allowed to rotate freely, otherwise, the turret cannot be in accurate butt joint with the FPSO; in addition, the FPSO needs to lock the rotational freedom of the turret during towing to prevent damage to the turret from currents and waves during towing. In the existing FPSO turrets in the world, the rotating part and the static part of the turret must be bound and fixed by cables when the turret is required to be locked, the operation is very troublesome, and certain risks exist particularly when underwater operation is required. If the main bearing of the turret can be provided with a locking function, great convenience is provided for the operation.
The main bearings of the FPSO turret are currently similar to those used for other mechanical equipment, but are rather large in scale. The bearing has no locking function and does not need the locking function, and the rotation locking function is generally realized by other parts such as a gearbox, a clutch, a brake and the like in other mechanical equipment, but the supporting equipment is not available in the FPSO turret.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. In view of the above, the present invention needs to provide a simple single point mooring main bearing with a locking function, which can quickly complete the locking and unlocking process of the main bearing, facilitate the transportation and installation operation of the FPSO turret, has a compact structure, is easy to arrange, has low maintenance cost, and is beneficial to the application and popularization of a single point mooring main bearing locking system.
The invention provides a simple single point mooring main bearing with a locking function, which is used for being connected with a turret and comprises: the outer ring is connected with a rotating support piece of the turret, the outer ring is connected with a fixed support piece of the turret, the outer ring is sleeved on the outer side wall of the inner ring, the outer ring is provided with a rolling assembly between the outer ring and the inner ring, the outer ring further comprises a locking assembly, the locking assembly comprises a plurality of outer lock bodies arranged along a circumferential array on the outer ring, a plurality of inner lock bodies arranged along the circumferential array on the inner ring and locking pieces, the outer lock bodies and the side faces, opposite to the inner lock bodies, of the inner lock bodies are provided with outer locking grooves and inner locking grooves which are identical in structure, and the locking pieces are embedded in the outer locking grooves and the inner locking grooves after the inner lock bodies rotate for a preset angle.
According to one embodiment of the invention, the inner ring comprises an inner lower ring connected to the rotational support and an inner upper ring provided on the inner lower ring, the rolling assemblies being provided in gaps between the outer ring and the inner lower ring and between the outer ring and the inner upper ring.
According to one embodiment of the present invention, the rolling assembly includes a first rolling ring, a second rolling ring and a third rolling ring, the first rolling ring and the second rolling ring are sequentially disposed between the outer ring and the inner lower ring from bottom to top, and the third rolling ring is disposed between the outer ring and the inner upper ring.
According to one embodiment of the invention, the number of the inner lock bodies is N, wherein N is larger than or equal to 1, and the number of the outer lock bodies is larger than that of the inner lock bodies.
According to one embodiment of the invention, the outer lock body and the inner lock body are identical in structure and are both boss-type structures.
According to one embodiment of the invention, the outer locking groove and the inner locking groove are semi-circular, quarter-circular or semi-elliptical.
According to an embodiment of the present invention, a first dynamic sealing ring is further disposed between the outer ring and the inner upper ring, and the first dynamic sealing ring is located above the third rolling ring.
According to an embodiment of the present invention, a second dynamic sealing ring is further disposed between the outer ring and the inner lower ring, and the second dynamic sealing ring is located below the first rolling ring.
According to one embodiment of the invention, a sealing ring is provided between the inner upper ring and the inner lower ring.
According to one embodiment of the invention, the inner lock body, the inner upper ring, the inner lower ring and the rotary support member are connected by a first bolt, and the outer lock body, the outer ring and the fixed support member are connected by a second bolt.
The simple single point mooring main bearing with the locking function is characterized in that a plurality of outer lock bodies which are uniformly arranged at intervals are arranged on an outer ring, a plurality of inner lock bodies which are uniformly arranged at intervals are arranged on an inner upper ring, after the inner lock bodies rotate by a preset angle along with a rotating support member of a turret, outer lock grooves on the outer lock bodies are aligned with inner lock grooves on the inner lock bodies, then the inner lock bodies are inserted into the outer lock grooves and the inner lock grooves through locking parts, the inner ring is locked in a rotating mode and does not rotate any more, after a mooring system is installed, the locking parts are pulled out by a crane, locking of a turret bearing is released, the turret enters a normal working state, and by adding the locking assemblies on the main bearing, the problems that a traditional single point mooring main bearing locking system is complicated in terms of labor and difficult to realize in arrangement are solved, the cost of the single point mooring main bearing locking system is reduced, the structural design is compact, the application and popularization of the locking system of the main bearing of the single-point mooring are facilitated.
Drawings
Fig. 1 is a schematic diagram of a simple single point moored main bearing with locking function according to the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a sectional view a-a in fig. 2.
Fig. 4 is a sectional view of B-B in fig. 2.
Fig. 5 is a sectional view of C-C in fig. 2.
Fig. 6 is a sectional view of D-D in fig. 2.
FIG. 7 is another schematic illustration of a simple single point moored main bearing with locking according to the present invention.
Fig. 8 is a top view of fig. 7.
Reference numerals: 1-an inner ring; 2-the outer ring; 3-rotating the support; 4-a fixed support; 5-a rolling component; 6-a locking assembly; 7-a first dynamic sealing ring; 8-a second dynamic sealing ring; 9-a sealing ring; 11-inner lower ring; 12-inner upper ring; 13-a first bolt; 14-a second bolt; 51-a first scroll ring; 52-a second scroll ring; 53-a third scroll ring; 61-outer lock body; 62-an inner lock body; 63-locking piece; 611-outer locking groove; 621-inner locking groove.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 8, a simple single point mooring main bearing with locking function for connecting with a turret comprises: the outer ring locking device comprises an inner ring 1 and an outer ring 2, wherein the inner ring 1 is connected with a rotating support 3 of a turret, the outer ring 2 is connected with a fixed support 4 of the turret, the outer ring 2 is sleeved on the outer side wall of the inner ring 1, a rolling assembly 5 is arranged between the outer ring 2 and the inner ring 1, the outer ring locking device further comprises a locking assembly 6, the locking assembly 6 comprises a plurality of outer lock bodies 61 arranged on the outer ring 2 in a circumferential array mode, a plurality of inner lock bodies 62 arranged on the inner ring 1 in a circumferential array mode and locking pieces 63, outer locking grooves 611 and inner locking grooves 621 which are identical in structure are respectively arranged on the side faces, opposite to the outer lock bodies 61 and the inner lock bodies 62, of the locking pieces 63, and the inner lock bodies 62 are embedded in the outer locking grooves 611 and the inner locking.
The simple single point mooring main bearing with the locking function is characterized in that a plurality of outer lock bodies 61 which are uniformly arranged at intervals are arranged on an outer ring 2, a plurality of inner lock bodies 62 which are uniformly arranged at intervals are arranged on an inner upper ring 12, wherein after the inner lock bodies 62 rotate by a preset angle along with a rotating support member 3 of a turret, outer lock grooves 611 on the outer lock bodies 61 are aligned with inner lock grooves 621 on the inner lock bodies 62, and then the inner lock bodies are inserted into the outer lock grooves 611 and the inner lock grooves 621 through locking members 63 to lock the inner ring 1 in a rotating manner so as not to rotate any more, after a mooring system is installed, the locking members 63 are pulled out by a crane to release the locking of the turret bearing, so that the turret enters a normal working state, the problems that the traditional single point mooring main bearing locking system is complicated by means of workers and difficult to realize arrangement are solved by adding the locking members 6 on the main bearing, and the cost of the single point mooring, the main bearing locking system is compact in structural design, easy to arrange and low in maintenance cost, and is beneficial to application and popularization of a single-point mooring main bearing locking system.
As shown in fig. 1 to 6, the inner ring 1 includes an inner lower ring 11 connected to the rotation support 3 and an inner upper ring 12 provided on the inner lower ring 11, the rolling assembly 5 is provided in a gap between the outer ring 2 and the inner lower ring 11, and between the outer ring 2 and the inner upper ring 12, wherein the rolling assembly 5 includes a first rolling ring 51, a second rolling ring 52, and a third rolling ring 53, the first rolling ring 51 and the second rolling ring 52 are sequentially provided between the outer ring 2 and the inner lower ring 11 from bottom to top, the third rolling ring 53 is provided between the outer ring 2 and the inner upper ring 12, it should be understood that, by the arrangement of the first rolling ring 51, the second rolling ring 52, and the third rolling ring 53, the friction force of relative rotation between the outer ring 2 and the inner upper ring 12, the inner lower ring 11 is reduced, the operation of locking or unlocking process after the main bearing is rotated by a predetermined angle is facilitated, the middle section area of the inner side wall of the outer ring 2 in the vertical direction is provided with, the inner upper ring 12 and the inner lower ring 11 are respectively provided with an annular gap matched with the annular protrusion, wherein the first rolling part 51 is arranged on the lower bottom surface of the annular protrusion, the second rolling part 52 is arranged on the side wall of the annular protrusion, and the third rolling part 53 is arranged on the upper top surface of the annular protrusion.
As shown in fig. 1 to 6, the number of the inner lock bodies 62 is N, wherein N is equal to or greater than 1, the number of the outer lock bodies 61 is greater than the number of the inner lock bodies 62, the outer lock bodies 61 and the inner lock bodies 62 are identical in structure and are both boss-type structures, the outer lock grooves 611 and the inner lock grooves 621 are semi-circular, quarter-circular or semi-elliptical, wherein in one embodiment of the present invention, the number of the inner lock bodies 62 is 6, the number of the outer lock bodies 61 is 18, that is, when the inner ring 1 rotates 20 degrees, the inner lock bodies 62 can be aligned with one outer lock body 61, at this time, the outer lock grooves 611 and the inner lock grooves 621 are also aligned, a cylindrical hole or an elliptical hole is formed between the two to receive the locking member 63 to insert the inner ring 1 and the outer ring 2 for locking, in another embodiment, when the outer lock grooves 611 and the inner lock grooves 621 are both quarter-circular, the two adjacent outer lock bodies 61 are used together, two adjacent inner lock bodies 62 are also matched for use, when the inner ring 1 rotates for a preset angle, the two outer lock bodies 61 are aligned with the two inner lock bodies 62, at the moment, a semi-elliptical lock groove is formed between the four lock bodies, and locking can be completed by inserting the semi-elliptical lock fixing piece 63.
As shown in fig. 3 to 6, a first dynamic seal ring 7 is further disposed between the outer ring 2 and the inner upper ring 12, the first dynamic seal ring 7 is located above the third rolling ring 53, a second dynamic seal ring 8 is further disposed between the outer ring 2 and the inner lower ring 11, and the second dynamic seal ring 8 is located below the first rolling ring 51, so as to prevent the lubricating oil in the rolling assembly 5 from overflowing when the inner ring 1 rotates relative to the outer ring 2.
As shown in fig. 3 to 6, a seal ring 9 is provided between the inner upper ring 12 and the inner lower ring 11 to prevent the lubricating oil from overflowing from a gap of the contact surface between the inner upper ring 12 and the inner lower ring 11.
As shown in fig. 1 to 8, the inner lock 62, the inner upper ring 12, the inner lower ring 11 and the rotating support 3 are connected by the first bolt 13, and the outer lock 61, the outer ring 2 and the fixed support 4 are connected by the second bolt 14, it should be understood that the inner ring 1 and the inner lock 62 are fixed on the rotating support 3 of the turret by the first bolt 13 and the second bolt 14, the outer ring 2 and the outer lock 61 are fixed on the fixed support 4 of the turret, when the turret of the FPSO is installed, the turret only needs to be rotated to a specified angle, the lock 63 is inserted, the main bearing is locked, and after the mooring system is installed, the lock 63 is pulled out by the crane, the locking of the turret bearing can be released, and the turret enters a normal working state.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A simple single point mooring main bearing with locking for use in connection with a turret, comprising: the outer lock body is characterized by further comprising a locking assembly, the locking assembly comprises a plurality of outer lock bodies arranged along a circumferential array on the outer ring, a plurality of inner lock bodies arranged along the circumferential array on the inner ring and locking pieces, the outer lock body and the inner lock bodies are respectively provided with an outer locking groove and an inner locking groove which are consistent in structure on the side face, opposite to the inner lock body, of the outer lock body, and the locking pieces are embedded in the outer locking groove and the inner locking groove after the inner lock bodies rotate for a preset angle.
2. The simple single point mooring main bearing with locking function according to claim 1, wherein the inner ring comprises an inner lower ring connected to the rotating support and an inner upper ring provided on the inner lower ring, and the rolling assemblies are provided in gaps between the outer ring and the inner lower ring and between the outer ring and the inner upper ring.
3. The simple single point mooring main bearing with the locking function as recited in claim 2, wherein the rolling assembly comprises a first rolling ring, a second rolling ring and a third rolling ring, the first rolling ring and the second rolling ring are sequentially arranged between the outer ring and the inner lower ring from bottom to top, and the third rolling ring is arranged between the outer ring and the inner upper ring.
4. The simple single point mooring main bearing with the locking function as recited in claim 1, wherein the number of the inner lock bodies is N, wherein N is greater than or equal to 1, and the number of the outer lock bodies is greater than the number of the inner lock bodies.
5. The simple single point mooring main bearing with locking function according to any one of claims 1 to 4, wherein the outer lock body and the inner lock body are identical in structure and are both boss-type structures.
6. The simple single point mooring main bearing with locking function according to any one of claims 1 to 4, wherein the outer locking groove and the inner locking groove are semi-circular, quarter-circular or semi-elliptical.
7. The simple single point mooring main bearing with locking function according to claim 3, wherein a first dynamic sealing ring is further arranged between the outer ring and the inner upper ring, and the first dynamic sealing ring is located above the third rolling ring.
8. The simple single point mooring main bearing with the locking function according to claim 3, wherein a second dynamic sealing ring is further arranged between the outer ring and the inner lower ring, and the second dynamic sealing ring is located below the first rolling ring.
9. The simple single point mooring main bearing with locking function according to claim 2, wherein a sealing ring is arranged between the inner upper ring and the inner lower ring.
10. The simple single point mooring main bearing with locking function of claim 2, wherein the inner lock, the inner upper ring, the inner lower ring and the rotating support member are connected by a first bolt, and the outer lock, the outer ring and the fixed support member are connected by a second bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911303227.2A CN112977721A (en) | 2019-12-17 | 2019-12-17 | Simple single-point mooring main bearing with locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911303227.2A CN112977721A (en) | 2019-12-17 | 2019-12-17 | Simple single-point mooring main bearing with locking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112977721A true CN112977721A (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911303227.2A Pending CN112977721A (en) | 2019-12-17 | 2019-12-17 | Simple single-point mooring main bearing with locking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112977721A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999000294A1 (en) * | 1997-06-26 | 1999-01-07 | Dsc Engineering As | An arrangement for turning a turret on a ship |
| WO2007108694A1 (en) * | 2006-03-21 | 2007-09-27 | Advanced Production And Loading As | Turret locking system |
| CN201390610Y (en) * | 2009-01-15 | 2010-01-27 | 大连益利亚工程机械有限公司 | Pin shaft anti-rotating device |
| CN103287547A (en) * | 2012-03-01 | 2013-09-11 | 惠生海洋工程（美国）有限公司 | Buoy |
| CN203362816U (en) * | 2013-07-09 | 2013-12-25 | 青岛迪玛尔海洋工程有限公司 | Slewing main bearing of single-point mooring system |
| KR20190036145A (en) * | 2017-09-27 | 2019-04-04 | 삼성중공업 주식회사 | Turret mooring system |
| US20190144077A1 (en) * | 2017-11-15 | 2019-05-16 | Sofec, Inc. | In situ turret bearing remediation and assembly |
| CN209557496U (en) * | 2019-01-29 | 2019-10-29 | 唐山市丰南区第二粉末冶金厂 | Powder metallurgy high temperature resistant bearing shell |
-
2019
- 2019-12-17 CN CN201911303227.2A patent/CN112977721A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999000294A1 (en) * | 1997-06-26 | 1999-01-07 | Dsc Engineering As | An arrangement for turning a turret on a ship |
| WO2007108694A1 (en) * | 2006-03-21 | 2007-09-27 | Advanced Production And Loading As | Turret locking system |
| CN201390610Y (en) * | 2009-01-15 | 2010-01-27 | 大连益利亚工程机械有限公司 | Pin shaft anti-rotating device |
| CN103287547A (en) * | 2012-03-01 | 2013-09-11 | 惠生海洋工程（美国）有限公司 | Buoy |
| CN203362816U (en) * | 2013-07-09 | 2013-12-25 | 青岛迪玛尔海洋工程有限公司 | Slewing main bearing of single-point mooring system |
| KR20190036145A (en) * | 2017-09-27 | 2019-04-04 | 삼성중공업 주식회사 | Turret mooring system |
| US20190144077A1 (en) * | 2017-11-15 | 2019-05-16 | Sofec, Inc. | In situ turret bearing remediation and assembly |
| CN209557496U (en) * | 2019-01-29 | 2019-10-29 | 唐山市丰南区第二粉末冶金厂 | Powder metallurgy high temperature resistant bearing shell |
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