CN100550538C - High pressure or middle pressure swivel joint and offshore structure - Google Patents
High pressure or middle pressure swivel joint and offshore structure Download PDFInfo
- Publication number
- CN100550538C CN100550538C CNB2006100063006A CN200610006300A CN100550538C CN 100550538 C CN100550538 C CN 100550538C CN B2006100063006 A CNB2006100063006 A CN B2006100063006A CN 200610006300 A CN200610006300 A CN 200610006300A CN 100550538 C CN100550538 C CN 100550538C
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- conductor
- swivel joint
- ring
- high pressure
- lateral element
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Abstract
The present invention relates to chicksan, it comprises annular outboard element and inboard cylindrical elements.Inboard and lateral element comprises the electric conductor of at least two axially spaced-aparts respectively, and conductor can rotate with corresponding inboard and lateral element, and conductor forms at least two pairs, and they are located to has the contact-making surface that electrically contacts each other.A conductor every centering is set on the medial element, and another conductor is positioned on the lateral element, and each conductor connecting the relevant voltage circuit that extends to input terminal and lead-out terminal respectively, and conductor is insulated material and surrounds.The electric conductor of lateral element is set in place in the recess in annular entity external insulation ring, the electric conductor of medial element is set in place in annular entity in the recess in the dead ring, interior dead ring and external insulation ring coaxial line, inside and outside dead ring limits the border surface that extends vertically respectively, the border surface of ring is closely adjacent each other, and the contact-making surface of electric conductor is located on or near the border surface place.
Description
Technical field
The present invention relates to chicksan (swivel), comprise the annular outboard element, it limits cylindrical chamber around longitudinal axis, with inboard cylindrical elements, itself and described lateral element coaxial line, and it is rotatable with respect to described lateral element around described longitudinal axis, described inboard and lateral element comprise the electric conductor of at least two axially spaced-aparts respectively, described conductor can rotate with corresponding inboard and lateral element, described conductor is at least two pairs, they are located to has the contact-making surface that electrically contacts each other, a conductor every centering is set on the described medial element, another conductor is positioned on the described lateral element, and described each conductor connecting the relevant voltage circuit that extends to input terminal and lead-out terminal respectively, and described conductor is insulated material and surrounds.The invention still further relates to the middle pressure swivel joint of the above-mentioned type.
Background technology
U.S. Patent No. 4252388 discloses a kind of such swivel joint, and a kind of slip ring that is installed in the floating drum (buoy) wherein has been described, is used for electric power is transferred to offshore installation from generating ship.Described ship can be directed with the wind with response wind and stream condition around described floating drum, simultaneously described slip ring transferring high voltage three-phase power.Conductor-the rotor of medial element is mounted in the annular slab on the center framework of dielectric supporting bracket, has the dielectric barrier of packing ring shape alternatively.Conductor-the stator of lateral element is to be arranged to by the carbon brush that is installed in the brush holder, and contacts the conductive copper of the contact of described rotor.The open loop storehouse allows the circulation of high dielectric insulation oil to pass described storehouse, allows simultaneously to compare littler size with using air as dielectric.
Known swivel joint has such shortcoming, and promptly dielectric oil can be subjected to the pollution of the particulate that produces from carbon brush in when wearing and tearing.In view of the above, can be restricted by the maximum voltage that described swivel joint transmits.
In addition, using the dielectric insulator of circulation in known swivel joint is relative complex, and the fluid sealability design of additional pump and bearing must be arranged, and has meanwhile limited the maximum voltage by described swivel joint transmission.
Summary of the invention
Thereby, one object of the present invention be to provide a kind of in/chicksan, the chicksan of preferred a kind of compactness and reliability design.Another object of the present invention is to provide a kind of swivel joint of operating relatively high pressure.
About this point,, it is characterized in that the conductive contact piece of lateral element is set in place in the recess in annular entity external insulation ring according to swivel joint of the present invention,
The conductive contact piece of described medial element is set in place in annular entity in the recess in the dead ring, described in dead ring and described external insulation ring coaxial line,
Limit the border surface that extends vertically respectively with the external insulation ring in described, the described border surface of described ring is located to closely adjacent each other, and described electric conductor is located to and makes their contact-making surface be located on or near described border surface place.
Take the entity insulating material of dead ring form by use, can obtain high dielectric strength, thereby the high voltage on electric contact piece is fine, for example for the nominal current such as 395A, voltage is until 33kV.In addition, the use of described entity insulating material allows to reduce the size and the weight of described swivel joint, and thereby helps to limit bending moment on the rotating turret swivel joint storehouse.Minimizing has appearred in the pollution of the described insulating material that particulate caused that produces owing to the wearing and tearing of described electric contact piece, thereby insulation characterisitic has obtained maintenance in the useful life of described swivel joint.
In one embodiment, comprise annular contact surface respectively in lateral element and the conductor on medial element.By using annular contact surface, rather than use known carbon brush, in described swivel joint, the pollution of the dielectric oil that can use under 11kV condition for example can be avoided.
In swivel joint, each conductive contact piece comprises along the described axially connector from conductor extension to the connection surface, described connection surface is positioned at the obturator that is limited by the lid that has opening and fastener, described opening is used for fixing the reception cable, and described fastener is used for described lid is connected to described lateral element, is provided with the reception cavity of the lead that is used for receiving cable at lip-deep each connector of described connection.By described cable is incorporated in the terminal casing; wherein said terminal casing is incorporated in the body of swivel joint; the low voltage limit that can carry out the checking of whole swivel joint and not be subjected to being caused by connector, it is exactly this situation, promptly when Exe protection type connector is employed.
The suitable material that is used as the entity insulating material comprises, the polymeric bodies electrical insulator that polyether-ether-ketone constitutes, and it can be available from the product of the PEEK by name of Entegri company.
The suitable copper alloy that is used for electric contact piece can be available from by name
The product of copper alloy.Multilam is a kind of copper alloy bar of nickel plating, and it uses a plurality of spring sheet gratings and allow and realizes contacting via the contact point of a plurality of qualifications.Each grid forms independently electric bridge, thereby a plurality of parallel grid have significantly reduced total contact impedance.
Because by high voltage source according to electric swivel joint of the present invention transmitted, it can use at sea in the structure, described offshore structure comprises first floating structure that is provided with ship, is anchored to sea bed via rotating turret in directed with the wind mode, described ship is provided with at least one according to swivel joint of the present invention, and conductor wire extends to submarine cable from the power supply on the described ship via swivel joint.
Conductor wire may extend to one or more unwatched satellite-types (satellite) platform exporting for example power of 22.5MVA, and Blast Furnace Top Gas Recovery Turbine Unit (TRT) is placed on the FPSO, and this is because the economy of scale and benefit and operation and maintenance crewman's existence.On platform, main drive unit (for example, Compressed Gas, injection water, pneumatic lifting) is that electricity is operated, and it is unmanned that high reliability and low maintainability allow described platform.
According to another suitable applications of chicksan of the present invention is to place on the bank from marine FPSO output power.Be not to be injected into gas in the well again or to deliver the gas on the bank, can use gas turbine producing electric power on FPSO, it is transferred on the bank electrical network via swivel joint according to the present invention and submerged cable.
Another application of this swivel joint is to supply power to submerged pipeline from FPSO, thereby heats described pipeline, to offset the hydrate that forms owing to low ocean temperature.
Description of drawings
Referring to accompanying drawing, in the non-limiting example mode, with the embodiment that describes in detail according to chicksan of the present invention.In the accompanying drawings:
Fig. 1 shows the longitudinal sectional view according to chicksan of the present invention;
Fig. 2 is the basis right schematic cross sectional views of a conductor as shown in fig. 1;
Fig. 3 shows the embodiment of the cutaway view of chicksan as shown in fig. 1;
Fig. 4 shows the details of the ring of swivel joint as shown in Figure 3;
Fig. 5 shows another embodiment of swivel joint as shown in fig. 1; And
Fig. 6 a to 6c shows the maritime system that comprises according to chicksan of the present invention.
Embodiment
Fig. 1 shows chicksan 1, and it comprises fixing annular wall 2 and interior cylindrical bearing 3.Described annular wall 2 is connected to top and bottom connector casing 4,5, and they are used for connecting threephase cable 6,7 respectively.In described annular wall 2, five dead rings 8,9,10,11 and 12 are set, they are fixed to outer wall 2.In each dead ring 9 to 12, a recess is set respectively, in corresponding concave part, lay ring shaped conductor 15,16,17,18.The border surface of described external insulation ring 8 to 11 keeps in touch with the border surface that is fixed to four interior annular insulator 21 to 24 of described inboard cylindrical elements 3.Annular insulator 21 to 24 is rotating with described cylindrical elements 3 around longitudinal axis 27 in described.Conductor 28 to 31 is arranged in the corresponding recess of described each dead ring 21 to 24.Described each conductor 28 is preferably formed by ring shaped conductor to 31, but can comprise other shapes, and is for example cylindrical or spherical.As described insulator 8 to 12 and 21 to 24, described conductor 15 to 18 also comprises the contact-making surface that contacts each other at described border surface 20 places with 28 to 31, is used for electric current is transferred to fixing power cable 7 from the power cable (power lead) 6 of rotating.
Described internal conductance body 15 to 18 is connected to connector 32,33, and described connector shaft is to the connection surface 34 that extends to upside connector casing 5.Described connector 32,33 comprises the cavity 35,36 of the cable 38,39 that is used for holding three-phase power cable 6 respectively.The lid 40 of connector casing is connected to described outer wall 2 rotationally via bearing 41,42, seal 43,44,45 and bolt 47.Downside connector casing 4 comprises with the same structure of described upside connector casing 5, and is fixedly attached to described outer wall 2 by means of lid 46.Each power cable 6,7 is connected to corresponding lid 40,46 via clamping device 50 respectively clampedly.
Prevent that via gas relay unit (Buchholz Relay Unit) 51 protection dielectric oils its pressure is excessive, temperature is too high and leakage, described gas relay unit 51 comprises the compensation utricule, is used for adapting to thermal expansion and the contraction that described dielectric oil causes.Swivel joint of the present invention is applicable to high pressure, for example 33kV and 395A or bigger electric current.
Can be as seen from Figure 3, interior cylindrical bearing 3 (can be rotating part, and outer wall 2 being static) comprise first split ring and the sealing periphery interior ring 3 ', be used to be connected to cable 38,39.Conductor 15 to 18 that causes for fear of relatively moving and 21 to 24 wearing and tearing owing to the constant little displacement of ring between 2 and 3, in described, encircle 3 ' during little skew, the split ring of cylindrical bearing 3 can be out of shape and be maintained fixed against outer wall 2 a little.During ring 3 in described ' bigger rotations,, support the motion that 3 split ring will be followed described outer shroud for example greater than 5 °.Can be as seen from Figure 4, described outer shroud and interior ring 3,3 ' couple via the pushing of spring 14.
In the embodiment shown in fig. 5, interior ring 3 ' be connected to the Outer cylindrical supporting 3 of sealing periphery via protuberance 19 radially, described radially protuberance 19 be placed on the described cylindrical bearing 3 two springs 14,14 ' between.Ring 3 in this permission is described ' move with respect to the little of described supporting 3 makes under this little situation of movement, and described supporting 3 can still fixedly abut against described outer wall 2 to avoid little displacement wearing and tearing.
Fig. 6 a to 6c shows and comprises the unload a ship maritime system of (FPSO) 60 of Floating Production storage, and described FPSO 60 is anchored to seabed 61 via rotating turret 62, and the bottom of described rotating turret 62 is attached with anchor cable 63 and 64.Described ship 60 is around the constant described rotating turret 62 of relative position and directed with the wind.Flow string (product riser) 65 extends to production swivel joint (not shown) on the FPSO 60 from the subsea hydrocarbon well, and from described production swivel joint via pipeline 65 ' extend to production and/or treatment facility on the described FPSO.In generator unit 66, the gas that generates from described well can be converted to electricity, and it is provided to according to swivel joint 67 of the present invention.Be attached to the conductor on the interior cylindrical bearing of swivel joint 67 from generator unit 66 extended power cable 68, described in cylindrical bearing be static with respect to described ship 60.The power cable 69 that extends to sea bed is connected to the electric conductor of the exterior annular wall of swivel joint 67, and described annular wall is fixed and is attached to described rotating turret 62.Power cable 69 may extend to unmanned platform 70, described unmanned platform 70 via flow string 70 ', for example air collecting pipe is connected with sea bed, perhaps described power cable 69 may extend to power network 71 on the bank, and perhaps described power cable 69 can be connected with the heating element 75,76 of the hydrocarbon switching pipeline 77 of approximate horizontal between two floating structures 72,73.
Claims (12)
1. high pressure or middle pressure swivel joint (1), comprise annular outboard element (2), it limits cylindrical chamber around longitudinal axis (27), with inboard cylindrical elements (3), itself and described lateral element (2) coaxial line, and rotatable with respect to described lateral element around described longitudinal axis (27), described inboard and lateral element comprise the electric conductor (15,16,17,18 of at least two axially spaced-aparts respectively; 28,29,30,31), described conductor can rotate with corresponding inboard and lateral element (2,3), and described conductor is at least two to (15,28; 16,29; 17,30; 18,31), they are located to has the contact-making surface that electrically contacts each other, conductor (15,16,17,18) every centering is set on the described medial element (3), another conductor (28,29,30,31) is positioned on the described lateral element (2), and described each conductor is connecting the relevant voltage circuit (32,33) that extends to input terminal (6) and lead-out terminal (7) respectively, and described conductor (15 to 18,28 to 31) is insulated material and surrounds, it is characterized in that
The electric conductor of described lateral element (2) (28 to 31) is set in place in the recess in annular entity external insulation ring (8,9,10,11,12);
The electric conductor of described medial element (3) (15 to 18) is set in place in the recess in the dead ring in annular entity (21,22,23,24), described in dead ring and described external insulation ring coaxial line;
Limit the border surface (20,20 ') that extends vertically respectively with external insulation ring (8 to 12,21 to 24) in described, the described border surface of described ring is located to closely adjacent each other, described electric conductor is located to and makes their contact-making surface be located on or near described border surface (20,20 ') to locate.
2. high pressure according to claim 1 or middle pressure swivel joint (1) is characterized in that, the conductor (15 to 18,28 to 31) that is positioned on the described outside and the described medial element (2,3) comprises annular contact surface.
3. high pressure according to claim 1 and 2 or middle pressure swivel joint (1), it is characterized in that, each electric conductor is attached to a connector (32,33), described connector (32,33) axially extremely connect surface (34) along described from described conductor extension, described connection surface is positioned at the obturator that is limited by the lid (40) that has opening (50) and fastener (47), described opening (50) is used for fixing reception power cable (6), and described fastener (47) is used for described lid (40) is connected to described lateral element (2), each connector (32 on described connector face (34), 33) be provided with the lead (38 that is used for receiving power cable (6), 39) reception cavity (35,36).
4. high pressure according to claim 1 and 2 or middle pressure swivel joint (1), described dead ring (8 to 12; 21 to 24) comprise the entity insulator of making by the thermoplastic polymer.
5. high pressure according to claim 4 or middle pressure swivel joint, described dead ring comprises polyetheretherketonepolymer polymer.
6. high pressure according to claim 1 and 2 or middle pressure swivel joint (1) is characterized in that described electric conductor comprises copper alloy.
7. high pressure according to claim 1 and 2 or middle pressure swivel joint (1) is characterized in that, each conductor (15 to 18; 28 to 31) comprise the endless metal contact-making surface.
8. high pressure according to claim 7 or middle pressure swivel joint (1) is characterized in that described metal comprises copper alloy.
9. offshore structure, comprise first floating structure (60) that is anchored to sea bed via rotating turret (62) in directed with the wind mode, described structure (60) is provided with at least one according to the arbitrary described swivel joint of claim 1 to 8 (67), and conductor wire (68) extends to sea electric power cable (69) from the power cable (66) that is positioned on the ship via described swivel joint.
10. offshore structure according to claim 9, described power cable (69) is to extend at least one second floating structure (70) with described first floating structure mode separated by a distance, and described second floating structure is connected with the subsea hydrocarbon well via flow string (70 ').
11. offshore structure according to claim 10, described first floating structure (60) is connected with undersea gas fields via flow string (65), described power cable (69) extends to power network (71) on the bank, and the power supply (66) that is positioned on described first floating structure (60) comprises gas turbine.
12. offshore structure according to claim 9, described power cable (69) is connected with the heating element (75,76) of subsea hydrocarbon conveyance conduit (74), and described heating element (75,76) is used for the hydrocarbon of being carried is carried out temperature control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100063006A CN100550538C (en) | 2006-01-25 | 2006-01-25 | High pressure or middle pressure swivel joint and offshore structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100063006A CN100550538C (en) | 2006-01-25 | 2006-01-25 | High pressure or middle pressure swivel joint and offshore structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101009416A CN101009416A (en) | 2007-08-01 |
| CN100550538C true CN100550538C (en) | 2009-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100063006A Expired - Fee Related CN100550538C (en) | 2006-01-25 | 2006-01-25 | High pressure or middle pressure swivel joint and offshore structure |
Country Status (1)
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|---|---|
| CN (1) | CN100550538C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008015453A1 (en) * | 2008-03-22 | 2009-09-24 | Illinois Tool Works Inc., Glenview | Rotary contact connector for electrical cables |
| CN108772627B (en) * | 2018-06-07 | 2022-01-28 | 深圳市华天世纪激光科技有限公司 | Laser welding equipment for motor copper ring terminal on automobile |
| CN110148866B (en) * | 2019-04-22 | 2024-03-19 | 立讯精密工业股份有限公司 | Conductive slip ring |
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2006
- 2006-01-25 CN CNB2006100063006A patent/CN100550538C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101009416A (en) | 2007-08-01 |
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Granted publication date: 20091014 Termination date: 20180125 |