EP2426674A1 - Assembly for cooling an energy cable - Google Patents
Assembly for cooling an energy cable Download PDFInfo
- Publication number
- EP2426674A1 EP2426674A1 EP10305936A EP10305936A EP2426674A1 EP 2426674 A1 EP2426674 A1 EP 2426674A1 EP 10305936 A EP10305936 A EP 10305936A EP 10305936 A EP10305936 A EP 10305936A EP 2426674 A1 EP2426674 A1 EP 2426674A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow body
- power cables
- power
- cable
- arrangement according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
- H01B7/423—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
- H01B13/0207—Details; Auxiliary devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
Definitions
- the invention relates to an arrangement for cooling a power cable which is laid between two units of a power distribution network and which has at least two electrical conductors equipped with a jacket of insulating material, which is equipped with a device for passing a flowable cooling medium.
- DE-A-1 640 212 DE-A-1 640 212 ).
- Such an arrangement is used, for example, for routes for the transmission of electrical energy within localities with laid in the ground energy cables, which is heated in the operation of the same by the heat generated by the power cables, so that the heat is dissipated only poorly.
- the transmission power of the power cable is thereby reduced.
- the soil is relieved and it can be transmitted in the long run, a higher power.
- This also applies to cable trays with unfavorable thermal conditions in which a larger number of energy cables are close together or in which energy cables intersect.
- the invention has for its object to simplify the initially described method.
- a coherent unit of power cables and hollow body is used, which can be prepared by means of prefabrication with conventional machines and laid as a one-piece component.
- the hollow body is part of this unit. It is in direct contact with the power cables on their sheaths and therefore can absorb the heat generated by them directly.
- a flowable cooling medium such as hydrocarbons or non-combustible substances, which flows through the hollow body at least during operation of the arrangement, can therefore dissipate the heat generated by the power cables as quickly as possible.
- Suitable hydrocarbons are, for example, propane or propylene.
- Suitable non-combustible substances are, for example, ammonia or carbon dioxide and water.
- the power of the power cable can be kept in a simple manner at the predetermined value or even increased with unchanged dimensions. On the other hand, with sufficient cooling, the dimensions of the power cable can be reduced while maintaining power.
- the power cables and on the other hand the certain for the flowable cooling medium hollow body directly accessible, without any layers must be removed.
- the arrangement can be used with particular advantage for the use of the undesirable heat of the power cable for heating any devices when the heated cooling medium is supplied to a heat pump, for example.
- the heat generated by the power cables is available as a loss of heat almost free of charge and the hollow body is laid with the power cable anyway on the transmission line, so that no investment for a separate pipe system are required.
- Fig. 1 are two electrical units 1 and 2 indicated schematically, which are connected by an electric power cable 3 - hereinafter referred to as "cable 3" - with each other, the structure of which, for example, from FIGS. 2 and 3 evident.
- Electrical units are present in the electrical units 1 and 2.
- the unit 1 may be, for example, a substation of a power supply network.
- the unit 2 may be, for example, a local area network to which a plurality of households are connected.
- the cable 3 can be arranged in the usual technique between the two units 1 and 2. So it can be laid, for example, directly in the ground or retracted into existing cable ducts or pipes.
- the cable 3 points in the in FIGS. 2 and 3 illustrated embodiments, three stranded power cables 4, 5 and 6 on.
- the outer gussets between the power cables made of plastic hollow body 7, 8 and 9 are arranged, which serve for the passage of a flowable cooling medium.
- polyethylene can be used, advantageously cross-linked polyethylene.
- the hollow body 7, 8 and 9 are in the cable 3 after Fig. 2 designed as tubes which abut the power cables 4, 5 and 6. At the cable 3 after Fig.
- hollow bodies 7, 8 and 9 are provided, which are designed as approximately triangular, the shape of the gusset between the power cables 4, 5 and 6 adapted hollow profiles, which has an enlarged contact surface with the power cables 4, 5 and 6 and thus improved heat transfer from the Power cables to the cooling medium have.
- the geometric shape of the hollow body is arbitrary per se, as long as a good contact with the power cables 4, 5 and 6 is ensured.
- the cable 3 should have at least two power cables and at least one hollow body. But it can also be more than three power cables and more than three hollow body.
- the respective three power cables 4, 5 and 6 and hollow body 7, 8 and 9 are stranded together and form in open stranding the cable 3 as a coherent unit whose outer dimensions, for example, by the in Fig. 2 dashed marked perimeter 10 are given. All elements of the cable 3 after Fig. 2 should preferably be within the radius 10.
- the hollow bodies 7, 8 and 9 designed here as tubes can also have different diameters. They do not have to come close to the radius 10 and may exceed the same.
- the cable 3 after Fig. 3 is a structurally almost round structure, because the executed here as hollow sections hollow body 7, 8 and 9, the gusset between the power cables 4, 5 and 6 substantially fill. Any covers or sheaths are not required for the cable 3 in all embodiments for its installation.
- the cable 3 according to Fig. 4 be equipped with a protective jacket S, which surrounds the unit of power cables 4, 5 and 6 and hollow bodies 7, 8 and 9 as a common protective jacket.
- the protective jacket S exists for example, polyethylene.
- This in Fig. 4 Cable 3 shown corresponds structurally after Fig. 2 , However, the protective jacket S may be present in any structure of a cable 3 in the context of the described arrangement.
- Fig. 5 be constructed:
- Each of the three power cables 4, 5 and 6 is a separate, fully functional structure comprising an electrical conductor 11, an inner conductive layer 12 surrounding it, an insulator 13 disposed above, for example cross-linked polyethylene, and an outer conductive layer 14 surrounding the same 4, 5 and 6 may also have as part of a moisture barrier over the outer conductive layer 14 lying, completely closed layer of a swelling tape 15 which has swelling material at the entrance of water.
- an electrically effective screen 16 and an outer jacket 17 may be disposed of insulating material.
- the shield 16 may consist of copper wires wound around the swelling tape 15 with overlying transverse conductor or of copper strips.
- a release layer 18 consisting of crepe paper or swellable nonwovens may be arranged.
- the release layer 18 may also be surrounded by a trans-water-tight, copolymer-coated aluminum tape that forms an all-round shell.
- the jacket 17 is made of polyethylene, for example.
- the heated cooling medium is used with particular advantage for heating purposes.
- the heat transported by the hollow bodies of the energy cable is available as a waste product virtually free of charge.
- the heated cooling medium can be supplied, for example, in a known technique of a heat pump.
- a heat pump for example, hot water can be heated or floor heating systems operated by buildings.
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- Insulated Conductors (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Anordnung zum Kühlen eines Energiekabels, das zwischen zwei Einheiten eines Energieverteilungsnetzes verlegt ist und das mindestens zwei mit einem Mantel aus Isoliermaterial ausgerüstete elektrische Leiter aufweist, welche mit einer Einrichtung zum Durchleiten eines fließfähigen Kühlmediums ausgerüstet ist (
Eine solche Anordnung wird beispielsweise für Strecken zur Übertragung elektrischer Energie innerhalb von Ortschaften mit im Erdboden verlegten Energiekabeln eingesetzt, welcher beim Betrieb derselben durch die von den Energiekabeln erzeugte Wärme erwärmt wird, so daß die Wärme nur noch schlecht abgeführt wird. Die Übertragungsleistung der Energiekabel wird dadurch herabgesetzt. Durch eine Kühlung der Energiekabel wird der Erdboden entlastet und es kann auf Dauer eine höhere Leistung übertragen werden. Das gilt auch für Kabeltrassen mit ungünstigen thermischen Bedingungen, in denen eine größere Anzahl von Energiekabeln dicht nebeneinander liegt oder in denen Energiekabel sich kreuzen.Such an arrangement is used, for example, for routes for the transmission of electrical energy within localities with laid in the ground energy cables, which is heated in the operation of the same by the heat generated by the power cables, so that the heat is dissipated only poorly. The transmission power of the power cable is thereby reduced. By cooling the power cable, the soil is relieved and it can be transmitted in the long run, a higher power. This also applies to cable trays with unfavorable thermal conditions in which a larger number of energy cables are close together or in which energy cables intersect.
Aus der Zeitschrift "
Die bekannte Anordnung nach der eingangs erwähnten
Der Erfindung liegt die Aufgabe zugrunde, das eingangs geschilderte Verfahren zu vereinfachen.The invention has for its object to simplify the initially described method.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst,
- daß als Leiter miteinander verseilte Starkstromkabel eingesetzt sind,
- daß in mindestens einem der außen liegenden Zwickel zwischen den Starkstromkabeln ein an den Mänteln derselben anliegender, aus Kunststoff bestehender Hohlkörper angebracht ist, der gemeinsam mit den Starkstromkabeln zu einer Einheit verseilt ist, und
- daß der Hohlkörper zumindest beim Betrieb des Energiekabels an eine das fließfähige Kühlmedium liefernde Anlage zum Durchleiten desselben durch den Hohlkörper angeschlossen ist.
- in that stranded power cables are used as conductors,
- that in at least one of the outer gusset between the power cables attached to the coats thereof, consisting of plastic existing hollow body is attached, which is stranded together with the power cables to form a unit, and
- that the hollow body is connected at least during operation of the power cable to a flowable cooling medium-supplying system for passing it through the hollow body.
Bei dieser Anordnung wird eine zusammenhängende Einheit aus Starkstromkabeln und Hohlkörper eingesetzt, die im Wege der Vorfertigung mit üblichen Maschinen hergestellt und als einteiliges Bauteil verlegt werden kann. Der Hohlkörper ist Teil dieser Einheit. Er liegt in direktem Kontakt mit den Starkstromkabeln an deren Mänteln an und kann daher die von denselben erzeugte Wärme unmittelbar aufnehmen. Ein fließfähiges Kühlmedium, wie beispielsweise Kohlenwasserstoffe oder nicht brennbare Stoffe, das zumindest beim Betrieb der Anordnung durch den Hohlkörper fließt, kann die von den Starkstromkabeln erzeugte Wärme also schnellstens ableiten. Als Kohlenwasserstoffe eignen sich beispielsweise Propan oder Propylen. Geeignete, nicht brennbare Stoffe sind beispielsweise Ammoniak oder Kohlendioxid sowie Wasser. Die Leistung des Energiekabels kann so auf einfache Weise bei dem vorgegebenen Wert gehalten oder bei unveränderten Abmessungen auch erhöht werden. Andererseits können bei ausreichender Kühlung die Abmessungen des Energiekabels bei gleichbleibender Leistung auch verkleinert werden.In this arrangement, a coherent unit of power cables and hollow body is used, which can be prepared by means of prefabrication with conventional machines and laid as a one-piece component. The hollow body is part of this unit. It is in direct contact with the power cables on their sheaths and therefore can absorb the heat generated by them directly. A flowable cooling medium, such as hydrocarbons or non-combustible substances, which flows through the hollow body at least during operation of the arrangement, can therefore dissipate the heat generated by the power cables as quickly as possible. Suitable hydrocarbons are, for example, propane or propylene. Suitable non-combustible substances are, for example, ammonia or carbon dioxide and water. The power of the power cable can be kept in a simple manner at the predetermined value or even increased with unchanged dimensions. On the other hand, with sufficient cooling, the dimensions of the power cable can be reduced while maintaining power.
Wenn die Anordnung in offener Verseilung von Starkstromkabeln und Hohlkörper verlegt wird, sind und bleiben einerseits die Starkstromkabel und andererseits der für das fließfähige Kühlmedium bestimmte Hohlkörper direkt zugänglich, ohne daß irgendwelche Schichten entfernt werden müssen. Das gilt mit besonderem Vorteil für den Hohlkörper, der in vorteilhafter Weise außerhalb von Verbindungsmuffen geführt werden kann, in denen die Starkstromkabel miteinander elektrisch leitend verbunden sind. Es kann aber auch ein gemeinsamer Schutzmantel eingesetzt werden, der die Starkstromkabel und den Hohlkörper umgibt.If the arrangement is laid in open stranding of power cables and hollow body, are on the one hand, the power cables and on the other hand, the certain for the flowable cooling medium hollow body directly accessible, without any layers must be removed. This is especially true for the hollow body, which can be guided in an advantageous manner outside of connecting sleeves, in which the power cables are electrically conductively connected to each other. But it can also be used a common protective sheath surrounding the power cables and the hollow body.
Die Anordnung kann mit besonderem Vorteil auch zur Nutzung der an sich unerwünschten Wärme des Energiekabels zur Beheizung beliebiger Einrichtungen genutzt werden, wenn das erwärmte Kühlmedium beispielsweise einer Wärmepumpe zugeleitet wird. Die von den Starkstromkabeln erzeugte Wärme steht als Verlustwärme quasi kostenlos zur Verfügung und der Hohlkörper ist mit dem Energiekabel ohnehin auf der Übertragungsstrecke verlegt, so daß keine Investitionen für ein separates Rohrsystem erforderlich sind.The arrangement can be used with particular advantage for the use of the undesirable heat of the power cable for heating any devices when the heated cooling medium is supplied to a heat pump, for example. The heat generated by the power cables is available as a loss of heat almost free of charge and the hollow body is laid with the power cable anyway on the transmission line, so that no investment for a separate pipe system are required.
Ausführungsbeispiele des Erfindungsgegenstandes sind in den Zeichnungen dargestellt.Embodiments of the subject invention are illustrated in the drawings.
Es zeigen:
-
Fig. 1 in schematischer Darstellung eine Strecke zur Übertragung von elektrischer Energie. -
Fig. 2 und 3 Querschnitte durch zwei unterschiedlich aufgebaute, bei der Anordnung nach der Erfindung einsetzbare Energiekabel. -
Fig. 4 einen Querschnitt durch eine gegenüberFig. 2 ergänzte Ausführungsform des Energiekabels. -
Fig. 5 einen Querschnitt durch ein Starkstromkabel.
-
Fig. 1 a schematic representation of a route for the transmission of electrical energy. -
FIGS. 2 and 3 Cross sections through two differently constructed, usable in the arrangement according to the invention power cable. -
Fig. 4 a cross section through one oppositeFig. 2 supplemented embodiment of the power cable. -
Fig. 5 a cross section through a power cable.
In
Das Kabel 3 weist in den in
Die aus den
Zum Schutz insbesondere der Hohlkörper 7, 8 und 9 gegen mechanische Beschädigungen kann das Kabel 3 gemäß
Die drei Starkstromkabel 4, 5 und 6 können beispielsweise entsprechend
Jedes der drei Starkstromkabel 4, 5 und 6 ist ein eigenes, voll funktionsfähiges Gebilde mit einem elektrischen Leiter 11, einer denselben umgebenden inneren Leitschicht 12, einer darüber angeordneten, beispielsweise aus vernetztem Polyethylen bestehenden Isolierung 13 und einer dieselbe umgebenden äußeren Leitschicht 14. Die Starkstromkabel 4, 5 und 6 können außerdem als Teil einer Feuchtigkeitssperre eine über der äußeren Leitschicht 14 liegende, rundum geschlossene Schicht aus einem Quellband 15 haben, das bei Wasserzutritt quellendes Material aufweist. Über dem Quellband 15 können ein elektrisch wirksamer Schirm 16 und ein äußerer Mantel 17 aus Isoliermaterial angeordnet sein. Der Schirm 16 kann aus um das Quellband 15 gewickelten Kupferdrähten mit darüber liegender Querleitwendel oder aus Kupferbändern bestehen. Über dem Schirm 16 kann eine aus Krepppapier oder Quellvliesen bestehende Trennschicht 18 angeordnet sein. Die Trennschicht 18 kann auch von einem der Querwasserdichtigkeit dienenden, copolymerbeschichteten Aluminiumband umgeben sein, das eine rundum geschlossene Hülle bildet. Der Mantel 17 besteht beispielsweise aus Polyethylen.Each of the three
Beim Betrieb des Kabels 3 erzeugen dessen Starkstromkabel 4, 5 und 6 Wärme. Zum Kühlen des Kabels 3 und damit zum Erhalt der Übertragungsleistung desselben wird ein Kühlmedium durch die Hohlkörper 7, 8 und 9 geleitet, die dicht an den Starkstromkabeln anliegen und daher die Wärme unmittelbar aufnehmen. Sie wird mit dem Kühlmedium abgeführt, so daß die Starkstromkabel stets gut gekühlt sind.During operation of the
Das erwärmte Kühlmedium wird mit besonderem Vorteil für Heizungszwecke ausgenutzt. Die von den Hohlkörpern des Energiekabels transportierte Wärme steht als Abfallprodukt quasi kostenlos zur Verfügung. Das erwärmte Kühlmedium kann beispielsweise in bekannter Technik einer Wärmepumpe zugeführt werden. Durch eine solche Wärmepumpe können beispielsweise Brauchwasser erwärmt oder Fußbodenheizungen von Gebäuden betrieben werden.The heated cooling medium is used with particular advantage for heating purposes. The heat transported by the hollow bodies of the energy cable is available as a waste product virtually free of charge. The heated cooling medium can be supplied, for example, in a known technique of a heat pump. By such a heat pump, for example, hot water can be heated or floor heating systems operated by buildings.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10305936A EP2426674A1 (en) | 2010-09-01 | 2010-09-01 | Assembly for cooling an energy cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10305936A EP2426674A1 (en) | 2010-09-01 | 2010-09-01 | Assembly for cooling an energy cable |
Publications (1)
Publication Number | Publication Date |
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EP2426674A1 true EP2426674A1 (en) | 2012-03-07 |
Family
ID=43425804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10305936A Withdrawn EP2426674A1 (en) | 2010-09-01 | 2010-09-01 | Assembly for cooling an energy cable |
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EP (1) | EP2426674A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104599773A (en) * | 2015-01-20 | 2015-05-06 | 安徽德源电缆集团有限公司 | High temperature resistance and fire prevention multifunctional cable |
CN107068280A (en) * | 2017-05-02 | 2017-08-18 | 深圳市沃尔新能源电气科技股份有限公司 | Cable |
DE102017208144A1 (en) * | 2017-05-15 | 2018-11-15 | Siemens Aktiengesellschaft | Gas-insulated pipe and method for operating a gas-insulated pipe |
CN112037978A (en) * | 2020-07-30 | 2020-12-04 | 坤越线缆有限公司 | Flame-retardant environment-friendly low-voltage cable |
CN113380449A (en) * | 2020-02-25 | 2021-09-10 | 通用汽车环球科技运作有限责任公司 | Vascular cooling system for electrical conductors |
CN118231062A (en) * | 2024-04-02 | 2024-06-21 | 无锡市安普电缆有限公司 | High-flame-retardance anti-cracking special flexible cable processing equipment and processing method for rail transit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5046973U (en) * | 1973-08-29 | 1975-05-10 | ||
JPS5456187A (en) * | 1977-10-12 | 1979-05-04 | Sumitomo Electric Ind Ltd | Power cable cooling |
JPS5731728U (en) * | 1980-07-30 | 1982-02-19 | ||
DE4209928C1 (en) * | 1992-03-24 | 1992-12-24 | Felten & Guilleaume Energietechnik Ag, 5000 Koeln, De |
-
2010
- 2010-09-01 EP EP10305936A patent/EP2426674A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5046973U (en) * | 1973-08-29 | 1975-05-10 | ||
JPS5456187A (en) * | 1977-10-12 | 1979-05-04 | Sumitomo Electric Ind Ltd | Power cable cooling |
JPS5731728U (en) * | 1980-07-30 | 1982-02-19 | ||
DE4209928C1 (en) * | 1992-03-24 | 1992-12-24 | Felten & Guilleaume Energietechnik Ag, 5000 Koeln, De |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104599773A (en) * | 2015-01-20 | 2015-05-06 | 安徽德源电缆集团有限公司 | High temperature resistance and fire prevention multifunctional cable |
CN107068280A (en) * | 2017-05-02 | 2017-08-18 | 深圳市沃尔新能源电气科技股份有限公司 | Cable |
DE102017208144A1 (en) * | 2017-05-15 | 2018-11-15 | Siemens Aktiengesellschaft | Gas-insulated pipe and method for operating a gas-insulated pipe |
CN113380449A (en) * | 2020-02-25 | 2021-09-10 | 通用汽车环球科技运作有限责任公司 | Vascular cooling system for electrical conductors |
CN112037978A (en) * | 2020-07-30 | 2020-12-04 | 坤越线缆有限公司 | Flame-retardant environment-friendly low-voltage cable |
CN118231062A (en) * | 2024-04-02 | 2024-06-21 | 无锡市安普电缆有限公司 | High-flame-retardance anti-cracking special flexible cable processing equipment and processing method for rail transit |
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