Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G5/00—Installations of bus-bars
  • H02G5/06—Totally-enclosed installations, e.g. in metal casings
  • H02G5/063—Totally-enclosed installations, e.g. in metal casings filled with oil or gas
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G5/00—Installations of bus-bars
  • H02G5/002—Joints between bus-bars for compensating thermal expansion

Definitions

• the invention relates to a pipe conductor arrangement with a cfluidêtn encapsulating tube, which is part of a fluid encapsulation section and having a tube axis and with at least one of the fluid-tight encapsulating tube and electrically insulated arranged to this electrical phase conductor and a relative to the encapsulation tube along the tube axis movable protective tube.
• Such a piping arrangement is known, for example, from US Pat. No. 5,496,965.
• a fluid-tight encapsulation tube is used, which receives a fluid in its interior. Electrically isolated and encompassed by the encapsulation tube, a plurality of phase conductors are further arranged within the fluid.
• the phase conductors are encompassed by a protective tube, which is likewise arranged inside the fluid.
• the protective tube together with the phase conductors is movable relative to the encapsulation tube.
• a plurality of roller bearings are arranged on the circumference of the protective tube.
• the fluid-tight encapsulation pipe is driven forward and then the protective pipe with the phase conductors therein is inserted into the encapsulation pipe.
• the protective tube provides mechanical protection, in particular during insertion or advancement of the phase conductors outside the encapsulation tube. Due to the remaining within the fluid roller bearings occur in temperature changes any relative movements between encapsulation tube and protective tube.
• the object of the invention is to provide an arrangement in which a relative movement between encapsulation tube and protective tube can be influenced.
• the object is achieved in a pipe conductor arrangement of the type mentioned above in that an anchor point is formed between the protective tube and the encapsulation tube.
• an anchor point between the protective tube and encapsulation tube restricts the relative mobility of the protective tube and the encapsulation tube.
• a fixed point is formed between the two tubes, which defines a location from which thermal expansions can extend.
• stops between the protective tube and the encapsulating tube can be used.
• the fixed point is designed as a rigid connection.
• the anchor point forms a rigid connection between the protective tube and the encapsulation tube.
• the stop limited mobility between encapsulation tube and protective tube only in a certain direction with a certain sense of direction. In this case, the anchor point is reversible resolvable and recoverable.
• the anchor- Point should be chosen such that it preferably provides a connection between lateral surfaces of the protective tube and encapsulation tube.
• the anchor point can be designed such that the protective tube and the encapsulation tube are connected directly to one another.
• suitable assemblies effect an indirect fixation of encapsulation tube and protective tube to each other. For example, so existing fixed bearing or the like can be used to form an anchor point.
• the encapsulation tube extends along the tube axis.
• the encapsulation tube itself can limit an encapsulation section, at least in the radial direction, relative to the tube axis.
• An encapsulation section defines volume which hermetically seals a fluid.
• gas-tight barriers in the course of the encapsulation tube, which divides the encapsulation tube into different encapsulation sections.
• the barriers then each limit an encapsulation section on the front side.
• the barriers can be designed such that a barrier separates each from each other adjacent encapsulation sections.
• An advantageous embodiment may provide that the anchor point between the protective tube and encapsulation tube is significantly spaced from the front ends of the encapsulation section, in particular approximately centrally between them.
• Pipe layouts according to the invention are used to transmit high powers of electrical energy over longer distances. Typically, such a piping arrangement is divided into individual sections that reach lengths of up to several kilometers.
• the encapsulation tube is subdivided into a plurality of encapsulation sections, each of which receives a sealed amount of fluid.
• Suitable fluids are, for example, insulating oils, insulating gases such as sulfur hexafluoride, nitrogen, gas mixtures and other suitable gases or mixtures.
• the protective tube may for example have a multi-shell structure, ie the protective tube may have a metallic layer, which is provided with corresponding anti-corrosion coatings and, for example, for stabilizing the protective tube additionally have a concrete jacket.
• a solid expanded protective tube has a corresponding coefficient of thermal expansion.
• encapsulation tubes are constructed in one layer, for example aluminum or aluminum alloys are used to form the encapsulating housings.
• a continuous protective tube accommodates an encapsulation tube in its interior, which is subdivided into a plurality of sections, that is to say into a plurality of encapsulation sections.
• such an encapsulation section can be closed by a barrier located in the interior of the encapsulation tube.
• Such a barrier can be formed, for example, by a disk insulator, which can also be used for an electrically insulated mounting of the phase conductor in the encapsulating tube. It is advantageous if an anchor point is arranged at a distance from the respective front ends of the encapsulation sections.
• the anchor point should be provided as centrally as possible. That's it possible, based on the tube axis, on both sides of the anchor point to allow a defined length expansion.
• a further advantageous embodiment can provide that, spaced from the anchor point, the encapsulation tube is mounted on at least one floating bearing on the protective tube.
• roller bearings or plain bearings are suitable as floating bearings. It can be provided, for example, that in a coaxial arrangement of protective tube and encapsulation tube to each other correspondingly sized rollers are provided on movable bearings, which roll on the one on an inner circumferential surface and on the other on an outer circumferential surface of the encapsulation tube or the protective tube. This allows a spacing and centering of the tubes to each other.
• phase conductor is supported via a holding insulator fixed relative to the encapsulation tube, the holding insulator being arranged offset relative to the tube axis relative to the anchor point.
• a holding insulator fixed relative to the encapsulation tube allows the phase conductor to be fixed in position.
• the holding insulator can be designed, for example, as a fluid-tight disk insulator.
• the holding insulator may deviate from an ideal disk shape and, for example, have conical shapes or rib structures on a surface.
• Such a holding insulator can be used to form a bulkhead serve, whereby a Kapselungsabterrorism is limited in the axial direction.
• a corresponding holding insulator is arranged on the front side of an encapsulation section. Relative to the tube axis, the fixed holding insulators are located on the front side of the respective encapsulation section.
• a holding insulator movable relative to the encapsulation tube is arranged on the phase conductor.
• a holding insulator movable relative to the encapsulation tube also makes possible relative movements of the phase conductor relative to the encapsulation tube and, due to the mobility of the encapsulation tube relative to the thermowell, also a movability of the phase conductor relative to the thermowell.
• the movable holding insulator is rigidly connected to the phase conductor so that movements of the phase conductor are transferred to the movable holding insulator and, for example, sliding of the movable holding insulator can take place on an inner circumferential surface of the encapsulation tube.
• the phase conductor has plug connections in sections which, for example, allow a bolt-shaped section of the phase conductor to protrude into a tulip-shaped section of the phase conductor so that ments in these connectors can be compensated free of mechanical stresses.
• the capsule tube has a length compensator.
• a length compensator can be provided, for example, if a plurality of encapsulation sections of an encapsulation tube are arranged one behind the other in the direction of the tube axis.
• length-variable sections can be inserted in the course of at least one encapsulation section into the encapsulation tube.
• An adjustable-length section can be realized, for example, by telescopable sections or by a so-called bellows, wherein in the case of the telescopic sections, two tube sections matched in diameter and fluid-tightly sealed engage with one another and are movable relative to one another.
• a section of the encapsulation tube is made reversibly deformable. This section is deformed more or less depending on the length of the encapsulation tube.
• the encapsulation tube and the protective tube have circular cross-sections, wherein the diameter ratio of protective tube to Encapsulation tube between V3 (about 1.73) and e (about 2.73) is located.
• Tubes with substantially circular cross-sections are mechanically stable and advantageously positionable coaxially with one another.
• a hollow cylindrical space in which, for example, the anchor points and the movable bearings can be arranged.
• this space for example, with a special medium.
• the use of appropriately dried and purified air (nitrogen) may be provided, so that the encapsulation tube is located within a defined atmosphere.
• nitrogen nitrogen
• the space surrounding the encapsulation tube can be used to conduct heat within the tube arrangement, for example by means of convection.
• the space between the capsule housing and the protective tube can be used.
• FIG. 1 is a section through a pipe conductor arrangement.
• a portion of a pipe assembly is shown.
• Such a pipe conductor arrangement can have lengths of several kilometers.
• several of the sections shown in the figure are arranged axially one behind the other.
• the pipe conductor arrangement has a fluid-tight encapsulation pipe 1.
• the fluid-tight encapsulation tube 1 has a substantially circular cross section and is aligned coaxially with a tube axis 2. Due to the sectional representation in the figure, the tube axis 2 appears as a straight line. However, it can also be provided that, using the elasticity of the fluid-tight encapsulation tube, a laying around curves takes place so that a curved tube axis 2 is formed.
• the tube assembly has a protective tube 3, which surrounds the fluid-tight encapsulation tube 1.
• the protective tube 3 likewise has a substantially circular cross-section, and is arranged coaxially to the tube axis 2 and thus also to the fluid-tight encapsulation tube 1.
• the fluid-tight encapsulation tube 1 is formed, for example, from an aluminum alloy.
• the protective tube 3 may comprise, for example, as a core a steel tube, which is provided on its surfaces with corresponding anti-corrosion coating.
• a concrete jacket 4 is additionally arranged around the protective tube 3.
• the concrete jacket 4 serves for a surface coating of the protective tube 3, and on the other hand it increases the mass of the tubular conductor arrangement. This reduces the buoyancy of the overall arrangement when laying in waters and additionally ensures mechanical protection.
• phase conductor 5 is arranged in the interior of the fluid-tight Kapselungsrohres lapped by an electrically insulating fluid, such as a gas or a liquid, preferably sulfur hexafluoride, nitrogen or mixtures thereof.
• the phase conductor 5 is also aligned coaxially with the tube axis 2.
• a positioning of a single phase conductor 5 is schematically provided.
• a plurality of phase conductors 5 are guided together within the fluid-tight enclosure tube 1.
• the phase conductor 5 is held electrically isolated by holding insulators spaced from the fluid-tight enclosure tube 1.
• a fixed relative to the encapsulation tube 1 holding insulator 6 is designed in the form of a disc insulator, which is gas-tightly inserted into the fluid-tight encapsulation tube 1.
• corresponding flanges are arranged in the course of the fluid-tight encapsulation tube 1, so that the fixed holding insulator 6 can be inserted gas-tightly into the course of the encapsulation tube 1 at a flange connection.
• the fixed holding insulator 6 forms a boundary of a Kapselungsabiteses, which closes the fluid inside.
• a plurality of axially consecutive encapsulation sections are arranged. If a use of flanges for the introduction of fixed holding insulators 6, which act as a fluid-tight barrier, is provided, a limitation of an encapsulation section can also be easily recognized on the outer circumference of the encapsulation tube 1.
• movable holding insulators 7 are, for example, columnar shaped, and radially connected to the tube axis 2 circumferentially offset with the phase conductor 5, so that a girder-like storage and centered guidance of the phase conductor 5 takes place in the interior of the fluid-tight enclosure tube 1.
• a plurality of movable holding insulators 7 may be arranged.
• an anchor point 8 is provided on an encapsulation section.
• the anchor point is formed in the present embodiment by coaxial around the tube axis 2 circumferential rings, one of the rings is rigidly connected to the inner surface of the protective tube 3, and a smaller diameter ring is rigidly connected to the outer surface of the fluid-tight enclosure tube 1. If necessary, it can be provided that the two rings are additionally rigidly coupled to each other or that only a stop is formed, which allows an on-demand touching and lifting the two rings of the anchor point 8.
• the rollers 9 are dimensioned such that they roll both on the inner circumferential surface of the protective tube 3 and on the outer circumferential surface of the fluid-tight encapsulation tube 1 and thus effect centering and positioning of fluid-tight encapsulation tube 1 and protective tube 3.
• a length compensator 10 is inserted into the fluid-tight encapsulation tube 1.
• the length compensator 10 is realized by a bellows, which has an increased elasticity.
• a more or less pronounced compression of the length compensator 10 takes place.
• a telescopic arrangement of pipe sections protruding into one another may be provided there, which are sealed in a corresponding fluid-tight manner in their contact surfaces.
• the length compensator 10 may be inserted, for example by means of welded joints in the fluid-tight encapsulation tube 1. Alternatively, it can also be provided to provide corresponding flanges with screw connections. In order to compensate for a change in length in the region of the phase conductor 5, it is provided that the phase conductor 5 has interconnected portions, wherein the individual sections are contacted via plug contacts 11 with each other. There is, for example, a bolt-shaped portion of the phase conductor of a bush-shaped portion of the
• Relative movements in the direction of the tube axis 2 between the fluid-tight encapsulation tube 1 and the protective tube 3 can be guided via the non-locating bearings designed in the form of rollers 9 or skids. It is advantageous if exactly one anchor point is assigned to each encapsulation section approximately in the center.
• the anchor points can be designed as a fixed bearing, so that both sides of the anchor point, relative to the encapsulation section or the front ends of the encapsulation section, can result in changes in length. The length changes take place starting from the anchor point 8 in each case with opposite sense of direction (see the figure dotted arrows).
• the protective tube 3 is likewise embodied in a fluid-tight manner, so that a defined medium can be introduced into the space formed between the encapsulation tube 1 and the protective tube 3 and heat can be transferred in the tube arrangement via this medium.
• the medium can flow, for example, by natural convection within the pipe conductor arrangement, and, for example, thermal phenomena caused by current heat effects can be transported from the interior of the pipe conductor arrangement as quickly as possible to external areas.

Landscapes

• Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Installation Of Bus-Bars (AREA)
• Thermal Insulation (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=41254805

Family Applications (1)

Country Status (6)

Families Citing this family (5)

Family Cites Families (24)

• 2008
  • 2008-06-30 DE DE102008030997A patent/DE102008030997A1/de not_active Withdrawn
• 2009
  • 2009-06-24 US US13/002,069 patent/US20110114351A1/en not_active Abandoned
  • 2009-06-24 EP EP09772353A patent/EP2294667A1/de not_active Withdrawn
  • 2009-06-24 CA CA2729326A patent/CA2729326A1/en not_active Abandoned
  • 2009-06-24 WO PCT/EP2009/057884 patent/WO2010000653A1/de active Application Filing
  • 2009-06-24 CN CN2009801252134A patent/CN102077432A/zh active Pending

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events