CN114179976B - Liquid slip ring for single point mooring system - Google Patents
Liquid slip ring for single point mooring system Download PDFInfo
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- CN114179976B CN114179976B CN202111616357.9A CN202111616357A CN114179976B CN 114179976 B CN114179976 B CN 114179976B CN 202111616357 A CN202111616357 A CN 202111616357A CN 114179976 B CN114179976 B CN 114179976B
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- inner ring
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- bearing
- liquid slip
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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
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
- B63B27/25—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines for fluidised bulk material
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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
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
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- 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)
Abstract
The invention discloses a liquid slip ring for a single-point mooring system, relates to the technical field of ocean engineering equipment, and particularly relates to a high-pressure large-caliber liquid slip ring for a single-point mooring system. The large-caliber liquid slip ring can transmit high-pressure fluid medium and comprises an inner ring, an outer ring, a top cover, an inlet pipe flange, an outlet pipe flange, a base, a driving flange, a sealing system, a bearing waterproof cover, a bearing lubrication filling system, a leakage collecting box, a slip ring running condition on-line monitoring system and the like. An inner ring with a stepped round platform is arranged on the base; the inner ring of the turntable bearing is arranged on a round table at the lowest part of the inner ring; the outer ring is mounted on the outer ring of the turntable bearing; the top cover is mounted on the inner ring; the inner ring cylinder and the outer ring are provided with fluid medium channels; the outer ring rotates around the inner ring by means of a turntable bearing under the action of the driving flange; multiple seals are used to ensure the sealing effect. A plurality of large-caliber liquid slip rings are connected up and down to form a liquid slip ring group.
Description
Technical Field
The invention discloses a liquid slip ring for a single-point mooring system, relates to the technical field of ocean engineering equipment, and particularly relates to a high-pressure large-caliber liquid slip ring for a single-point mooring system.
Background
The liquid slip ring is also called a liquid rotary joint, is a transfer device for connecting an offshore floating body with a submarine pipeline, and mainly has the function of realizing medium transportation under the condition that the floating body rotates, and is core equipment of a single-point mooring system. Along with the development process of offshore oil, the high-pressure large caliber becomes the development trend of a single-point mooring liquid slip ring. As the working condition of the offshore operation environment is bad, the stability and the reliability of the liquid slip ring are strictly required along with the increase of the pressure resistance and the caliber of the liquid slip ring.
At present, no domestic high-pressure large-caliber single-point mooring liquid slip ring is put into practical application, and the design and manufacturing technology of the high-pressure large-caliber single-point mooring liquid slip ring is monopoly abroad and has high cost.
The high-pressure large-caliber liquid slip ring is designed and manufactured abroad, and is usually in the form of a liquid slip ring group, a fixed inner ring is adopted, a plurality of outer rings are sleeved on the inner ring, a spacer ring and a thrust bearing are placed between the outer rings, a locking ring and a locking large nut are arranged at the top of the liquid slip ring group, and an inlet for connecting a pipeline is formed in the outer cylindrical surface at the bottom of the inner ring. The liquid slip ring group has a complex structure and is not easy to assemble and disassemble. If one of the liquid slip rings fails, the whole liquid slip ring set needs to be disassembled.
Aiming at the problems in the prior art, it is necessary to research and design a novel high-pressure large-caliber liquid slip ring for a single-point mooring system so as to overcome the problems in the prior art.
Disclosure of Invention
According to the technical problems that the high-pressure large-caliber liquid slip ring set provided by the prior art is complex in structure, difficult to assemble and disassemble, and inconvenient to maintain, a certain liquid slip ring cannot be independently disassembled, and the liquid slip ring for the single-point mooring system is provided. The invention provides a large-caliber liquid slip ring group capable of safely and reliably transmitting high-pressure fluid media, each liquid slip ring is a large-caliber liquid slip ring and can transmit high-pressure fluid, and each liquid slip ring is relatively independent and can be independently disassembled and assembled, so that the large-caliber liquid slip ring group has the characteristics of stable rotation, good sealing performance, easiness in installation, convenience in maintenance, capability of transmitting high-pressure fluid media, high transmission efficiency and the like.
The invention adopts the following technical means:
a liquid slip ring for single point mooring system, its inside medium lumen and inlet pipe and outlet pipe all adopt heavy-calibre, can transmit high-pressure fluid medium. The structure center of the liquid slip ring is provided with a hollow inner hole which penetrates up and down and a structure interface which is connected with the upper slip ring and the lower slip ring, and a plurality of large-caliber liquid slip rings are connected up and down to form a liquid slip ring group;
further, a liquid slip ring for a single point mooring system comprises: the device comprises an inner ring, a bearing, an outer ring, a top cover, a base, a slip ring running condition on-line monitoring system and a driving flange;
further, the bottom of the foundation is bolted to a fixed platform of the single point mooring system;
further, the bottom of the inner ring is provided with a bolt hole, and is fixed to the top of the base through a bolt;
further, the lower part of the inner ring is a stepped round table, and the inner ring of the bearing is fixed on the round table at the lowest part of the inner ring through bolts;
further, the bottom of the outer ring is provided with a bolt hole, and the outer ring is fixedly arranged on the outer ring of the bearing through a bolt;
further, two leakage detection holes are respectively arranged outside each groove on the top surface and the bottom surface of the outer ring, the other end of each leakage detection hole is arranged on the outer cylindrical surface, and a sensor of the slip ring running condition on-line monitoring system is arranged at the leakage detection hole on the outer cylindrical surface;
further, the top of the inner ring is provided with a bolt hole, and the top cover is fixed on the inner ring through a bolt;
further, the top cover is provided with a bolt hole, and the base of the upper slip ring is connected with the top cover through a bolt;
further, a driving flange is connected with the outer ring.
Further, the bearing adopts a high-precision three-row cylindrical roller combined turntable bearing, and the bearing is arranged between the bottom of the outer ring and the boss at the bottom of the inner ring;
further, the inner ring and the outer ring are respectively connected with the inner ring and the outer ring of the bearing to form a revolving pair;
further, three annular grooves are formed in the round table at the middle lower part of the inner ring, a spring energy storage sealing ring A, a spring energy storage sealing ring B and a spring energy storage sealing ring C are respectively arranged on the round table, and are used for dynamic sealing between the inner ring and the outer ring, and a sand accumulation groove is formed in the innermost side of the round table;
further, two annular grooves are formed in the top end face of the inner ring, and an O-shaped ring A and an O-shaped ring B are respectively placed for sealing between the O-shaped ring A and the top cover;
further, the bottom surface of the inner ring is provided with an opening, and the other side of the opening is opened to the outer cylindrical surface of the inner ring and is used for being connected with the annular cavity of the outer ring through a pipe flange B of the inlet pipe connected by a bolt;
further, the center of the inner ring is provided with a hollow inner hole which penetrates up and down and is used for a channel of an optical fiber and a cable of an optoelectronic slip ring at the top of the liquid slip ring group;
further, the inner ring is provided with a corresponding through hole for installing a pipeline channel of the upper liquid slip ring;
further, a large blind hole is formed in the corresponding position of the bottom of the inner ring and used for reducing weight.
Further, an opening of the annular cavity is formed in the inner cylindrical surface of the outer ring, an opening communicated with the annular cavity is formed in the outer cylindrical surface, and a pipe flange A of the outlet pipe is connected at the opening through bolts;
further, four annular grooves are formed in the top surface of the outer ring, a seawater-proof sealing ring A is arranged in the annular groove at the outermost side, and a spring energy storage sealing ring A, a spring energy storage sealing ring B and a spring energy storage sealing ring C are respectively arranged in the three annular grooves at the inner side and used for sealing between the outer ring and the top cover;
further, 2 annular grooves are respectively formed in the inner cylindrical surfaces of the upper part and the lower part of the opening of the annular cavity of the outer ring, and a sand control sealing ring A and a sand control sealing ring B are respectively placed in the grooves and used for sand control sealing between the inner cylindrical surface of the outer ring and the outer cylindrical surface of the inner ring;
further, the sand control sealing ring A is a Gelai ring used for preventing coarse sand and precipitation;
further, the sand control sealing ring B is a WO ring and is used for preventing fine sand and impurities.
Further, the bottom surface of the outer ring is provided with bolt holes, and the bearing waterproof cover is fixed to the bottom of the outer ring through bolts;
further, two annular grooves are formed in the top end face of the bearing waterproof cover, and an O-shaped ring C and an O-shaped ring D are respectively placed on the annular grooves and used for sealing between the bearing waterproof cover and the outer ring;
further, two annular grooves are formed in the upper end face of the bottom of the bearing waterproof cover, and a seawater-proof sealing ring B and a seawater-proof sealing ring C are respectively placed and used for sealing between the bearing waterproof cover and the inner ring;
further, the bearing waterproof cover is used for protecting the bearing from corrosion caused by ocean humid air and seawater.
Further, a liquid leakage collecting box is arranged on a boss at the lower part of the outer ring.
Further, the top cover is provided with corresponding through holes for installing a pipeline channel of the upper liquid slip ring.
Further, the inner ring, the outer ring, the top cover, the pipe flange A, the pipe flange B and the driving flange are made of duplex stainless steel forgings.
The working process of the invention is as follows:
the subsea pipeline is connected to the inner ring of the liquid slip ring by a riser (inlet/outlet pipeline), the outer ring is connected to the outlet/inlet pipeline, and crude oil extracted from the drilling platform is transported to the FPSO via the liquid slip ring by the subsea pipeline; the produced water on the FPSO is transmitted to the drilling platform through the water injection slip ring and the submarine pipeline.
The top cover, the inner ring and the base are connected to the main bearing inner ring of the single-point mooring system through bolts and indirectly connected to the jacket, and are in a relatively static state with the seabed. The drive flange mounted to the outer ring is connected to a single point mooring turret, which by means of turntable bearings between the inner and outer rings allows the outer ring and the outlet/inlet piping to rotate freely 360 ° around the inner ring along with the FPSO under the "weathervaning effect".
Compared with the prior art, the invention has the following advantages:
1. the liquid slip ring for the single-point mooring system provided by the invention has the advantages that each liquid slip ring can transmit high-pressure fluid medium, the caliber of each liquid slip ring is larger, and the production efficiency is high;
2. the liquid slip ring for the single-point mooring system provided by the invention adopts the embedded high-precision three-row column roller combined turntable bearing, and has good rotation stability;
3. the liquid slip ring for the single-point mooring system provided by the invention adopts a multiple sealing structure, has a silt-proof function, and has good sealing property;
4. according to the liquid slip ring for the single-point mooring system, 2 sand prevention sealing rings are respectively arranged at the inner cylindrical surface grooves at the upper part and the lower part of the opening of the annular cavity of the liquid slip ring, so that gravel in crude oil can be prevented from entering the spring energy storage sealing rings, and the service life of the spring energy storage sealing rings is prolonged;
5. the invention provides a liquid slip ring for a single-point mooring system, wherein three spring energy storage sealing rings are respectively arranged in annular grooves of an upper plane of an outer ring and a round table at the lower part of an inner ring and used for sealing high-pressure medium in a cavity;
6. the liquid slip ring for the single-point mooring system is compact and reasonable in structure and easy to install;
7. the liquid slip ring for the single-point mooring system provided by the invention has the advantages that each liquid slip ring is independent, and one liquid slip ring can be independently disassembled, so that the maintenance is convenient;
8. the invention provides a liquid slip ring for a single point mooring system, wherein a plurality of liquid slip rings can be stacked to form a slip ring group for use.
In conclusion, the technical scheme of the invention solves the problems that the high-pressure large-caliber liquid slip ring group in the prior art is complex in structure, difficult to assemble and disassemble, and inconvenient to maintain, and one liquid slip ring cannot be independently disassembled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a front view 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 assembly of the inner ring, bearing and outer ring of the present invention.
In the figure: 1. the device comprises an inner ring 2, a bearing 3, a spring energy storage sealing ring A4, a spring energy storage sealing ring B5, a spring energy storage sealing ring C6, an outer ring 7, a sand prevention sealing ring A8, a sand prevention sealing ring B9, a sea water prevention sealing ring A10, a top cover 11, a pipe flange A12, a pipe flange B13, an O-shaped ring A14, an O-shaped ring B15, a leakage collecting box 16, an O-shaped ring C17, an O-shaped ring D18, a bearing waterproof cover 19, a sea water prevention sealing ring B20, a sea water prevention sealing ring C21, a base 22, a slip ring running condition on-line monitoring system 23, a driving flange 24, a bearing grease injection connecting pipe 25 and a bearing grease discharge connecting pipe.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
As shown in the figure, the invention provides a liquid slip ring for a single point mooring system, wherein the inner medium pipe cavity, the inlet pipe and the outlet pipe are large-caliber, and the liquid slip ring can be used for conveying high-pressure fluid medium. The structure center of the liquid slip ring is provided with a hollow inner hole which penetrates up and down and a structure interface which is connected with the upper slip ring and the lower slip ring, and a plurality of large-caliber liquid slip rings are connected up and down to form a liquid slip ring group;
a liquid slip ring for a single point mooring system comprising: the device comprises an inner ring 1, a bearing 2, an outer ring 6, a top cover 10, a base 21, a slip ring running condition on-line monitoring system 22 and a driving flange 23; the bottom of the foundation 21 is bolted to the fixed platform of the single point mooring system; the bottom of the inner ring 1 is provided with bolt holes, and is fixed to the top of the base 21 by bolts; the lower part of the inner ring 1 is a stepped round table, and the inner ring of the bearing 2 is fixed on the round table at the lowest part of the inner ring 1 through bolts; the bottom of the outer ring 6 is provided with a bolt hole, and the bolt hole is fixedly arranged on the outer ring of the bearing 2 through a bolt; two leak detection holes are respectively arranged outside each groove on the top surface and the bottom surface of the outer ring 6, the other end of each leak detection hole is arranged on the outer cylindrical surface, and a sensor of the slip ring running condition on-line monitoring system 22 is arranged at the leak detection hole on the outer cylindrical surface; the top of the inner ring 1 is provided with a bolt hole, and the top cover 10 is fixed on the inner ring 1 through bolts; the top cover 1 is provided with a bolt hole, and is connected with a base 21 of the upper slip ring through a bolt; the drive flange 23 is connected to the outer ring 6.
The bearing 2 adopts a high-precision three-row cylindrical roller combined turntable bearing, and the bearing 2 is arranged between the bottom of the outer ring 6 and a boss at the bottom of the inner ring 1; the inner ring 1 and the outer ring 6 are respectively connected with the inner ring and the outer ring of the bearing 2 to form a revolving pair.
Three annular grooves are formed in the round table at the middle lower part of the inner ring 1, a spring energy storage sealing ring A3, a spring energy storage sealing ring B4 and a spring energy storage sealing ring C5 are respectively arranged on the round table, the spring energy storage sealing ring A3, the spring energy storage sealing ring B4 and the spring energy storage sealing ring C5 are used for dynamic sealing between the inner ring 1 and the outer ring 6, and a sand accumulation groove is formed in the innermost side of the round table; the top end surface of the inner ring 1 is provided with two annular grooves, and an O-shaped ring A13 and an O-shaped ring B14 are respectively placed for sealing with the top cover 10; the bottom surface of the inner ring 1 is provided with an opening, a pipe flange B12 of the inlet pipe is connected through bolts, and the other side of the opening is opened to the outer cylindrical surface of the inner ring 1 and is used for being connected with the annular cavity of the outer ring 6; the center of the inner ring 1 is provided with a hollow inner hole which penetrates up and down and is used for the passage of the optical fiber and the cable of the photoelectric slip ring at the top of the liquid slip ring group; the inner ring 1 is provided with corresponding through holes for installing a pipeline channel of the upper liquid slip ring; and a large blind hole is formed in the corresponding position of the bottom of the inner ring 1 and used for reducing weight.
An opening of an annular cavity is formed in the inner cylindrical surface of the outer ring 6, an opening communicated with the annular cavity is formed in the outer cylindrical surface, and a pipe flange A11 of an outlet pipe is connected at the opening through bolts; four annular grooves are formed in the top surface of the outer ring 6, a seawater-proof sealing ring A9 is arranged in the annular groove on the outermost side, and a spring energy storage sealing ring A3, a spring energy storage sealing ring B4 and a spring energy storage sealing ring C5 are respectively arranged in the three annular grooves in the annular groove for sealing between the outer ring 6 and the top cover 10; 2 annular grooves are respectively formed in the inner cylindrical surface of the upper part and the lower part of the annular cavity opening of the outer ring 6, and a sand control sealing ring A7 and a sand control sealing ring B8 are respectively placed in the grooves and used for sand control sealing between the inner cylindrical surface of the outer ring 6 and the outer cylindrical surface of the inner ring 1; the sand control sealing ring A7 is a Gelai ring and is used for preventing coarse sand and sedimentation; the sand control sealing ring B8 of the sealing ring is a WO ring and is used for preventing fine sand and impurities.
The bottom surface of the outer ring 6 is provided with bolt holes, and the bearing waterproof cover 18 is fixed to the bottom of the outer ring 6 through bolts; the top end surface of the bearing waterproof cover 18 is provided with two annular grooves, and an O-shaped ring C16 and an O-shaped ring D17 are respectively placed on the annular grooves and used for sealing between the bearing waterproof cover 18 and the outer ring 6; two annular grooves are formed in the upper end face of the bottom of the bearing waterproof cover 18, and a seawater-proof sealing ring B19 and a seawater-proof sealing ring C20 are respectively placed and used for sealing between the bearing waterproof cover 18 and the inner ring 1; the bearing shield 18 is used to protect the bearing 2 from the sea humid air and seawater.
A liquid leakage collecting box 15 is arranged on a boss at the lower part of the outer ring 6.
The top cover 10 is provided with corresponding through holes for installing a pipeline channel of the upper liquid slip ring.
The bearing waterproof cover 18 is provided with a plurality of bearing grease injection connecting pipes 24 and bearing grease discharge connecting pipes 25, one ends of the connecting pipes are respectively connected with grease injection holes or grease discharge holes on the bearing, and the other ends of the connecting pipes are connected with an electric centralized lubricating device for grease injection and grease discharge of the bearing.
The inner ring 1, the outer ring 6, the top cover 10, the pipe flange A11, the pipe flange B12 and the driving flange 23 are made of duplex stainless steel forgings.
The embodiment is a single-point mooring liquid slip ring group consisting of 3 sets of high-pressure large-caliber liquid slip rings; the liquid slip ring group consists of 2 sets of mixed transmission slip rings and 1 set of water injection slip rings from top to bottom; the design pressure of the mixed transmission slip ring and the water injection slip ring is 14MPa; the inlet and outlet pipes of the mixed transmission slip ring are 12' single channels; the inlet and outlet pipes of the water injection slip ring are 14' double channels. Crude oil extracted from the drilling platform is transmitted to the FPSO through a subsea pipeline and a mixing slip ring; the produced water on the FPSO is transferred to the drilling platform through the water injection slip ring and subsea pipeline.
The technical scheme of the invention solves the problems of complex structure, difficult disassembly and assembly, incapability of independently disassembling one liquid slip ring and inconvenient maintenance of the high-pressure large-caliber liquid slip ring group in the prior art.
The single-point mooring liquid slip ring breaks through the technical monopoly of foreign companies and realizes the localization of the high-voltage large-caliber single-point mooring liquid slip ring group. The large-caliber liquid slip rings are independent and can be independently assembled and disassembled, and the large-caliber liquid slip ring has the characteristics of stable rotation, good sealing performance, easiness in installation and maintenance, capability of transmitting high-pressure fluid media, high transmission efficiency and the like.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. A liquid slip ring for a single point mooring system, characterized by:
the inner medium tube cavity, the inlet tube and the outlet tube of the liquid slip ring for the single point mooring system are large-caliber, and can transmit high-pressure fluid medium. The structure center of the liquid slip ring is provided with a hollow inner hole which penetrates up and down and a structure interface which is connected with the upper slip ring and the lower slip ring, and a plurality of large-caliber liquid slip rings are connected up and down to form a liquid slip ring group;
the liquid slip ring for the single point mooring system comprises: the device comprises an inner ring (1), a bearing (2), an outer ring (6), a top cover (10), a base (21), a slip ring running condition on-line monitoring system (22) and a driving flange (23);
the bottom of the base (21) is connected to a fixed platform of the single-point mooring system through bolts;
the bottom of the inner ring (1) is provided with a bolt hole, and the inner ring is fixed to the top of the base (21) through a bolt;
the lower part of the inner ring (1) is a stepped round table, and the inner ring of the bearing (2) is fixed on the round table at the lowest part of the inner ring (1) through bolts;
the bottom of the outer ring (6) is provided with a bolt hole, and the bolt hole is fixedly arranged on the outer ring of the bearing (2) through a bolt;
two leak detection holes are respectively arranged outside each groove on the top surface and the bottom surface of the outer ring (6), the other end of each leak detection hole is arranged on an outer cylindrical surface, and a sensor of a slip ring running condition on-line monitoring system (22) is arranged at the leak detection hole on the outer cylindrical surface;
the top of the inner ring (1) is provided with a bolt hole, and the top cover (10) is fixed on the inner ring (1) through bolts;
the top cover (1) is provided with a bolt hole, and is connected with a base (21) of the upper slip ring through a bolt;
the driving flange (23) is connected with the outer ring (6).
2. A liquid slip ring for a single point mooring system as defined in claim 1, wherein:
the bearing (2) adopts a high-precision three-row cylindrical roller combined turntable bearing, and the bearing (2) is arranged between the bottom of the outer ring (6) and a boss at the bottom of the inner ring (1);
the inner ring (1) and the outer ring (6) are respectively connected with the inner ring and the outer ring of the bearing (2) to form a revolving pair.
3. A liquid slip ring for a single point mooring system as defined in claim 2, wherein:
three annular grooves are formed in the round table at the middle lower part of the inner ring (1), a spring energy storage sealing ring A (3), a spring energy storage sealing ring B (4) and a spring energy storage sealing ring C (5) are respectively arranged on the round table, the spring energy storage sealing ring A, the spring energy storage sealing ring B (4) and the spring energy storage sealing ring C (5) are used for dynamic sealing between the inner ring (1) and the outer ring (6), and a sand accumulation groove is formed in the innermost side of the round table;
two annular grooves are formed in the top end face of the inner ring (1), and an O-shaped ring A (13) and an O-shaped ring B (14) are respectively arranged for sealing with the top cover (10);
the bottom surface of the inner ring (1) is provided with an opening, and the other side of the opening is opened to the outer cylindrical surface of the inner ring (1) and is used for being connected with the annular cavity of the outer ring (6) through a pipe flange B (12) of the inlet pipe connected by a bolt;
the center of the inner ring (1) is provided with a hollow inner hole which penetrates up and down and is used for a passage of an optical fiber and a cable of an optoelectronic slip ring at the top of the liquid slip ring group;
the inner ring (1) is provided with a corresponding through hole for being arranged in a pipeline channel of the upper liquid slip ring;
and a large blind hole is formed in the corresponding position of the bottom of the inner ring (1) and used for reducing weight.
4. A liquid slip ring for a single point mooring system as defined in claim 3, wherein:
an opening of an annular cavity is formed in the inner cylindrical surface of the outer ring (6), an opening communicated with the annular cavity is formed in the outer cylindrical surface, and a pipe flange A (11) of an outlet pipe is connected at the opening through bolts;
four annular grooves are formed in the top surface of the outer ring (6), a seawater-proof sealing ring A (9) is arranged in the annular groove at the outermost side, and a spring energy storage sealing ring A (3), a spring energy storage sealing ring B (4) and a spring energy storage sealing ring C (5) are respectively arranged in the three annular grooves and used for sealing between the outer ring (6) and the top cover (10);
2 annular grooves are respectively formed in the inner cylindrical surfaces of the upper part and the lower part of the annular cavity opening of the outer ring (6), and a sand control sealing ring A (7) and a sand control sealing ring B (8) are respectively placed in the grooves and used for sand control sealing between the inner cylindrical surface of the outer ring (6) and the outer cylindrical surface of the inner ring (1);
the sand control sealing ring A (7) is a Gelai ring and is used for preventing coarse sand and precipitation;
the sand control sealing ring B (8) is a WO ring and is used for preventing fine sand and impurities.
5. A liquid slip ring for a single point mooring system as defined in claim 4 wherein:
the bottom surface of the outer ring (6) is provided with bolt holes, and a bearing waterproof cover (18) is fixed to the bottom of the outer ring (6) through bolts;
two annular grooves are formed in the top end face of the bearing waterproof cover (18), and an O-shaped ring C (16) and an O-shaped ring D (17) are respectively arranged and used for sealing between the bearing waterproof cover (18) and the outer ring (6);
two annular grooves are formed in the upper end face of the bottom of the bearing waterproof cover (18), and a seawater-proof sealing ring B (19) and a seawater-proof sealing ring C (20) are respectively placed on the two annular grooves and used for sealing between the bearing waterproof cover (18) and the inner ring (1);
the bearing waterproof cover (18) is used for protecting the bearing (2) and enabling the bearing (2) to be prevented from being corroded by ocean humid air and seawater.
6. A liquid slip ring for a single point mooring system as defined in claim 5 wherein:
the liquid leakage collecting box (15) is arranged on a boss at the lower part of the outer ring (6).
7. A liquid slip ring for a single point mooring system as defined in claim 1, wherein:
the top cover (10) is provided with corresponding through holes for installing a pipeline channel of the upper liquid slip ring.
8. A liquid slip ring for a single point mooring system as defined in claim 1, wherein:
the inner ring (1), the outer ring (6), the top cover (10), the pipe flange A (11), the pipe flange B (12) and the driving flange (23) are made of duplex stainless steel forgings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111616357.9A CN114179976B (en) | 2021-12-27 | 2021-12-27 | Liquid slip ring for single point mooring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111616357.9A CN114179976B (en) | 2021-12-27 | 2021-12-27 | Liquid slip ring for single point mooring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114179976A CN114179976A (en) | 2022-03-15 |
| CN114179976B true CN114179976B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111616357.9A Active CN114179976B (en) | 2021-12-27 | 2021-12-27 | Liquid slip ring for single point mooring system |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE803242A (en) * | 1972-08-07 | 1973-12-03 | Davies Robert H | IMPROVEMENTS TO SINGLE STATION Mooring Systems |
| GB1452658A (en) * | 1974-08-30 | 1976-10-13 | Exxon Research Engineering Co | Multi-product swivel joint for mooring systems |
| CN102135216A (en) * | 2011-01-19 | 2011-07-27 | 大连华锐股份有限公司 | Liquid rotating joint for single point mooring system |
| CN215205258U (en) * | 2021-05-08 | 2021-12-17 | 山东科瑞油气装备有限公司 | Hose tower for single point mooring system |
| CN216546604U (en) * | 2021-12-27 | 2022-05-17 | 大连华锐重工集团股份有限公司 | Liquid slip ring for single point mooring system |
-
2021
- 2021-12-27 CN CN202111616357.9A patent/CN114179976B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE803242A (en) * | 1972-08-07 | 1973-12-03 | Davies Robert H | IMPROVEMENTS TO SINGLE STATION Mooring Systems |
| GB1452658A (en) * | 1974-08-30 | 1976-10-13 | Exxon Research Engineering Co | Multi-product swivel joint for mooring systems |
| CN102135216A (en) * | 2011-01-19 | 2011-07-27 | 大连华锐股份有限公司 | Liquid rotating joint for single point mooring system |
| CN215205258U (en) * | 2021-05-08 | 2021-12-17 | 山东科瑞油气装备有限公司 | Hose tower for single point mooring system |
| CN216546604U (en) * | 2021-12-27 | 2022-05-17 | 大连华锐重工集团股份有限公司 | Liquid slip ring for single point mooring system |
Non-Patent Citations (1)
| Title |
|---|
| 单点系泊***液滑环弹簧蓄能密封圈密封性能研究;高涵宇;李佳君;杜彬;李林燎;孙家斌;岳前进;;润滑与密封(12);全文 * |
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|---|---|
| CN114179976A (en) | 2022-03-15 |
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