JPH07211155A - Power cable line - Google Patents
Power cable lineInfo
- Publication number
- JPH07211155A JPH07211155A JP6012078A JP1207894A JPH07211155A JP H07211155 A JPH07211155 A JP H07211155A JP 6012078 A JP6012078 A JP 6012078A JP 1207894 A JP1207894 A JP 1207894A JP H07211155 A JPH07211155 A JP H07211155A
- Authority
- JP
- Japan
- Prior art keywords
- power cable
- cooling
- pipe
- external
- cable line
- 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.)
- Pending
Links
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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、大容量の電力を長距離
輸送するための外部直接冷却式電力ケーブル線路に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external direct cooling type power cable line for transporting a large amount of electric power over a long distance.
【０００２】[0002]
【従来の技術】電力ケーブルは、送電時に導体に発生す
るオーム損や金属遮蔽層に発生する渦電流損により発熱
し、絶縁体を熱劣化させる恐れがある。このような電力
ケーブルの絶縁体層を長期にわたって熱劣化から守ため
には、送電線路の長手方向に連続的に冷却用液体を流し
て、発生した熱を除去する方法がある。この方法は強制
冷却方式と呼ばれ、ケーブル内部に冷媒通路を設ける
内部冷却方式、ケーブルを密閉型の冷媒用管路内に収
容して管路、ケーブル間に冷媒を送る外部直接冷却方
式、ケーブルに隣接して密閉型の冷媒用管路を配置す
る間接冷却方式の３通りの方式がある。2. Description of the Related Art A power cable may generate heat due to ohmic loss generated in a conductor or eddy current loss generated in a metal shielding layer during power transmission, and may cause thermal deterioration of an insulator. In order to protect the insulating layer of such a power cable from thermal deterioration for a long period of time, there is a method of continuously flowing a cooling liquid in the longitudinal direction of the transmission line to remove the generated heat. This method is called a forced cooling method, an internal cooling method in which a refrigerant passage is provided inside the cable, an external direct cooling method in which the cable is housed in a sealed refrigerant pipeline, and a refrigerant is sent between the cables and the cable. There are three types of indirect cooling methods in which a closed refrigerant pipe line is arranged adjacent to the above.
【０００３】の方式については、短距離線路の冷却に
は大きな効果があるが、長距離線路では極度に冷却効率
が低下する恐れがある。また、の方式については、線
路の保守は有利であるが、もともと冷却効率が低く、ト
ータルコスト的に有利とは言えない。一方、の直接冷
却方式では、冷媒に水を使用すれば特に大きな冷却効果
が出る上に、長距離線路でも冷却管の圧力損失が少な
く、大容量長距離線路の冷却には最も適した方式であ
る。The method (1) has a great effect on the cooling of the short distance line, but the cooling efficiency may be extremely lowered in the long distance line. Regarding the method (1), the maintenance of the line is advantageous, but the cooling efficiency is originally low, and it cannot be said to be advantageous in terms of total cost. On the other hand, in the direct cooling method, if water is used as the refrigerant, a particularly large cooling effect is obtained, and pressure loss of the cooling pipe is small even in long-distance lines, which is the most suitable method for cooling large-capacity long-distance lines. is there.
【０００４】[0004]
【発明が解決しようとする課題】従来、の外部直接水
冷方式を応用した電力ケーブル線路においては、２００
〜２５０ｍｍと言う大口径のパイプ（水冷管）を洞道内
に布設し、その中に電力ケーブルを引き込み、管路接続
部や管路端におけるケーブル取り出し部の液体シールを
十分に施した上で水冷管内に冷媒を送る方式が採用され
ている。この方式は、大容量の長距離線路の構築に際
し、水冷管の輸送および布設と電力ケーブルの輸送およ
び布設の作業が２回にわたって行われるため、工期が長
く、施工コストも高価となり問題とされてきた。本発明
は、上記の如き事柄に着目し、大容量の長距離線路の構
築のための外部直接冷却式電力ケーブル線路を一回の輸
送および布設作業で構築できるように構成した電力ケー
ブル線路を提供することを目的とするものである。In the conventional power cable line to which the external direct water cooling system is applied, the power cable line is 200
A large-diameter pipe (water cooling pipe) of ~ 250 mm is laid in the cave, the power cable is drawn into it, and the pipe connection part and the cable removal part at the pipe end are sufficiently sealed and then water cooled. The method of sending the refrigerant into the pipe is adopted. In this method, when constructing a large-capacity long-distance line, the work of transporting and laying water-cooled pipes and transporting and laying of electric power cables are performed twice, so the construction period is long and the construction cost is expensive, which has been a problem. It was The present invention pays attention to the above matters and provides a power cable line configured so that an external direct cooling type power cable line for constructing a large-capacity long-distance line can be constructed by one transportation and installation work. The purpose is to do.
【０００５】[0005]
【課題を解決するための手段】即ち、本発明の電力ケー
ブル線路は、電力ケーブルと冷却液体輸送用内部管路と
を、その断面が真円に近いように複合し、該複合体の外
側に前記電力ケーブルおよび前記内部管路を覆うように
冷却液体輸送用外部管路を設けたことを特徴とするもの
である。That is, in the power cable line of the present invention, a power cable and an internal conduit for transporting a cooling liquid are compounded so that the cross section is close to a perfect circle, and the power cable and the internal conduit are provided outside the compound body. An external pipe for transporting the cooling liquid is provided so as to cover the power cable and the internal pipe.
【０００６】なお、本発明の電力ケーブル線路におい
て、電力ケーブルを収容する冷却液体輸送用外部管路
（以下、外部冷却用管路という）には、非磁性、軽量で
押出し成形が容易なポリエチレン製パイプを使用したも
のが最適である。本発明の電力ケーブル線路の製造にお
いて、外部冷却用管路を形成するプラスチック製パイプ
の押出し成形に際しては、外部からのシャワー冷却と共
に成形されるプラスチック製パイプ内部に予め冷却通路
を確保し、内部の熱容量を大きくして成形されるプラス
チック製パイプ内部からも熱を吸収すれば、早期に成形
が終了できる。また、外部冷却用管路を形成するプラス
チック製パイプは、電力ケーブルと共に冷却液体輸送用
内部管路（以下、内部冷却用管路という）を複合し、両
者の複合体の断面をできるだけ真円形に近くしてプラス
チックの押出成形を行えば真円度の高いものが得られ易
い。In the electric power cable line of the present invention, the cooling liquid transporting external conduit for accommodating the electric power cable (hereinafter referred to as external cooling conduit) is made of polyethylene which is non-magnetic, lightweight and easy to extrude. It is best to use a pipe. In the production of the electric power cable line of the present invention, at the time of extrusion molding of the plastic pipe forming the external cooling pipe, a cooling passage is secured in advance inside the plastic pipe molded together with shower cooling from the outside, and If heat is absorbed from the inside of the plastic pipe that is molded by increasing the heat capacity, molding can be completed early. In addition, the plastic pipe forming the external cooling conduit is combined with the power cable and the internal conduit for cooling liquid transportation (hereinafter referred to as the internal cooling conduit), and the cross section of both composites is made as round as possible. If plastic extrusion molding is performed in the vicinity, it is easy to obtain a product with high roundness.
【０００７】[0007]
【作用】本発明の電力ケーブル線路は、請求項１記載の
ように、工場での生産段階において内部冷却用管路と電
力ケーブルとを一体複合構造に作り上げ、この複合体を
覆ってその外側に外部冷却用管路を設けた一体構造であ
るため、一回の輸送および布設作業で大容量長距離線路
の構築ができる。また、その製造においても、請求項２
記載のように、内部冷却用管路と電力ケーブルとを一体
複合構造に作り上げ、この複合体を覆ってその外側に外
部冷却用管路を構成するプラスチック製パイプを押出し
成形するため、前記プラスチック製パイプの冷却を外部
からのシャワー冷却と共に前記プラスチック製パイプ内
部の内部冷却用管路を利用して冷却すれば、前記プラス
チック製パイプの内部からも熱を吸収できるので、早期
に外部冷却用管路の成形が終了できる。According to the power cable line of the present invention, as described in claim 1, the internal cooling pipe line and the power cable are made into an integrated composite structure at the production stage in the factory, and the composite body is covered to the outside. Since it has an integral structure with an external cooling pipe, it is possible to construct a large-capacity long-distance line with a single transportation and installation work. Further, also in the manufacturing thereof,
As described above, the internal cooling pipe and the power cable are made into an integrated composite structure, and the plastic pipe constituting the external cooling pipe is extruded to cover the composite and the plastic pipe is extruded on the outside thereof. If the cooling of the pipe is performed by using the internal cooling pipe inside the plastic pipe together with the shower cooling from the outside, the heat can be absorbed also from the inside of the plastic pipe. Molding can be completed.
【０００８】[0008]
【実施例】以下、本発明の電力ケーブル線路の実施例を
図を用いて説明する。 実施例 図１は本発明の電力ケーブル線路の一実施例品の断面説
明図である。図中１は、外部冷却用管路４内に収納され
る電力ケーブルで、その構造は、図２に示すように、銅
素線を撚り合わせ断面扇形に圧縮成形したセグメント同
士を、更に断面円形に撚り合わせてなる導体１１の外周
に架橋ポリエチレン絶縁体層１２が設けられ、その上に
銅素線をロングピッチで巻いて形成したワイヤーシール
ド層１３、ステンレス板を円筒化してその突き合わせ部
を連続的に溶接し、軸方向に波付け加工を施してなるス
テンレス被覆層１４、およびポリエチレン防食被覆層１
５が順次形成されている。図中２は内部冷却用管路で、
押出し成形されたポリエチレン製異形パイプからなり、
内部に冷却水などの冷却液を通す通路２ａが形成されて
おり、更にその外周にステンレス、アルミニウム等の非
磁性金属製、ゴム、またはプラスチック製の型条を沿わ
せたり、ロングピッチで巻いて補強層が形成されてい
る。この内部冷却用管路２は、図１に示すように外部冷
却用管路４を形成するポリエチレン製パイプ内に１条ま
たは図３〜図５に示すように、複数条を電力ケーブル１
と縦添えまたは螺旋巻きして複合させて布、プラスチッ
ク製テープまたは、非磁性金属製テープなどの結束用テ
ープ３にて断面が真円に近い形状の一体化した複合体と
なされて配置されている。図中４は外部冷却用管路で押
出し成形されたポリエチレン製パイプからなり、内部の
電力ケーブル１と内部冷却用管路２との間に介在して冷
却水などの冷却液体を通す通路４ａが形成されている
（図１、図３〜５参照）。以上の構成が本発明の電力ケ
ーブル線路の基本的構造である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the power cable line of the present invention will be described below with reference to the drawings. Example FIG. 1 is a cross-sectional explanatory view of an example of an electric power cable line according to the present invention. In the figure, reference numeral 1 is a power cable housed in an external cooling pipe line 4, and its structure is such that, as shown in FIG. A cross-linked polyethylene insulator layer 12 is provided on the outer periphery of a conductor 11 formed by twisting the wire, and a wire shield layer 13 formed by winding a copper element wire at a long pitch on the conductor layer 12, and a stainless steel plate is made cylindrical to form a continuous butted portion thereof. Stainless steel coating layer 14 and polyethylene anticorrosion coating layer 1 obtained by mechanically welding and corrugating in the axial direction
5 are sequentially formed. In the figure, 2 is a pipe for internal cooling,
It consists of extruded polyethylene profile pipe,
A passage 2a for passing a cooling liquid such as cooling water is formed inside, and a non-magnetic metal such as stainless steel or aluminum, a rubber, or a plastic strip is provided along the outer periphery thereof or wound at a long pitch. A reinforcing layer is formed. This internal cooling pipe 2 has one line in a polyethylene pipe forming the external cooling pipe 4 as shown in FIG. 1 or a plurality of lines as shown in FIGS. 3 to 5.
And vertically or spirally wound to form a composite with a binding tape 3 such as a cloth, a plastic tape, or a non-magnetic metal tape, the cross-section of which is close to a perfect circle. There is. In the figure, reference numeral 4 is a polyethylene pipe extruded from an external cooling pipe, and a passage 4a is provided between the internal power cable 1 and the internal cooling pipe 2 for passing a cooling liquid such as cooling water. Is formed (see FIGS. 1 and 3 to 5). The above configuration is the basic structure of the power cable line of the present invention.
【０００９】上記基本構造の場合、外部冷却用管路４を
形成させるために設けるプラスチック製パイプは、長期
にわたって冷却液体の圧力や軸力に耐えるため、その肉
厚はパイプの内径の１０％程度、即ち、２０〜２５ｍｍ
程度にする必要がある。その理由は、これ以上の肉厚の
ものにするとプラスチック製パイプは、その弾力でター
ンテーブル径を大きくする必要性が生じたり、更には布
設後の熱伸縮吸収用のスネークとりが困難となるためで
ある。また、外部冷却用管路内を流れる冷却液体の最大
使用圧力はプラスチック製パイプの長期クリープ特性の
点から１０ｋｇ／ｃｍ2 程度に限定される。In the case of the above-mentioned basic structure, the plastic pipe provided to form the external cooling conduit 4 withstands the pressure and axial force of the cooling liquid for a long period of time, and therefore its wall thickness is about 10% of the inner diameter of the pipe. That is, 20 to 25 mm
Need to be about. The reason is that if the wall thickness is thicker than this, the plastic pipe will need to increase the turntable diameter due to its elasticity, and it will be difficult to take the snake for absorbing heat expansion and contraction after installation. Is. Further, the maximum working pressure of the cooling liquid flowing in the external cooling pipe is limited to about 10 kg / cm 2 from the viewpoint of the long-term creep characteristics of the plastic pipe.
【００１０】また、高圧用補強タイプの外部冷却用管路
４としては、プラスチック製パイプの外側に断面平型の
非磁性金属条またはＦＲＰ製条などの補強条層５を、軸
線に対して巻付け角度５５度で相互に逆方向に２層巻付
け、その上に薄肉のＰＶＣまたはポリエチレンなどのプ
ラスチック防食性被覆層６を設けたものを用いると良
い。上記高圧用補強タイプのものは、外部冷却用管路４
の圧力や軸力は、その外側に取り付けた平型補強条層５
が受け持つため、外部冷却用管路４の肉厚は内径の５％
以下の数ｍｍ程度に抑制できるので、これによって線路
としての可撓性が著しく向上する。また、この場合の外
部冷却用管路４は、補強条層５による内圧補強により、
外部冷却用管路４内を流れる冷却液体の輸送能力は１０
０ｋｇ／ｃｍ2 以上とすることも可能であり、冷却液体
の流量を増やして電力ケーブル１の冷却効果を飛躍的に
高めることも可能である。Further, as the high pressure reinforcing type external cooling conduit 4, a reinforcing strip layer 5 such as a non-magnetic metal strip having a flat cross section or a FRP strip is wound around the axis on the outside of a plastic pipe. It is preferable to use two layers wound in mutually opposite directions at an attachment angle of 55 degrees and provided with a thin plastic anticorrosive coating layer 6 such as PVC or polyethylene thereon. The above-mentioned reinforced type for high pressure has a pipe line 4 for external cooling.
The pressure and axial force of the flat reinforcing strip 5 attached to the outside
The external cooling conduit 4 has a wall thickness of 5% of the inner diameter
Since it can be suppressed to about several mm, the flexibility of the line is significantly improved. Further, in this case, the external cooling pipe line 4 is reinforced by the internal pressure by the reinforcing strip layer 5,
The transport capacity of the cooling liquid flowing in the external cooling pipe 4 is 10
It is also possible to set it to 0 kg / cm 2 or more, and it is also possible to increase the flow rate of the cooling liquid to dramatically enhance the cooling effect of the power cable 1.
【００１１】[0011]
【発明の効果】本発明に電力ケーブル線路は、工場での
生産段階において内部冷却用管路２と電力ケーブル１と
を一体複合構造に作り上げ、この複合体を覆ってその外
側に外部冷却用管路４を配置させた構造であるため、一
回の輸送および布設作業で大容量の電力を長距離輸送す
るための外部直接冷却式電力ケーブル線路が構築できる
ものであり、工期も短期間で施工コストも低いなど極め
て経済性に富んでいる。また、内部冷却用管路２と外部
冷却用管路４のいずれか一方の通路を冷却液体の供給用
に、他方の通路を冷却液体の戻り用に使用することもで
きるので、冷却設備が簡単となり冷却コストを低減させ
ることができる。According to the present invention, in the power cable line, the internal cooling pipe line 2 and the power cable 1 are made into an integrated composite structure at the production stage in the factory, and the external cooling pipe is provided outside the composite structure. Since the structure has the path 4, it is possible to construct an external direct cooling type power cable line for long-distance transportation of a large amount of electric power by one transportation and installation work, and the construction period is short. It is extremely economical with low cost. Further, since either one of the internal cooling pipeline 2 and the external cooling pipeline 4 can be used for supplying the cooling liquid and the other passage can be used for returning the cooling liquid, the cooling facility is simple. Therefore, the cooling cost can be reduced.
【図１】本発明の電力ケーブル線路の一実施例品の断面
説明図である。FIG. 1 is a cross-sectional explanatory view of an example of an electric power cable line according to the present invention.
【図２】図１の電力ケーブル線路において、内部冷却用
管路２と一体に複合されて外部冷却用管路４中に収納さ
れる電力ケーブル１の断面説明図である。FIG. 2 is a cross-sectional explanatory view of the power cable 1 that is integrally combined with the internal cooling conduit 2 and is housed in the external cooling conduit 4 in the power cable line of FIG.
【図３】〜[Figure 3]
【図５】本発明の電力ケーブル線路において、外部冷却
用管路４中に収納される電力ケーブル１と複合される内
部冷却用管路２の断面形状および複数本が配置された状
態を示す例の電力ケーブル線路の断面概略説明図であ
る。FIG. 5 is an example showing a cross-sectional shape and a state in which a plurality of internal cooling pipelines 2 combined with the power cable 1 housed in the external cooling pipeline 4 are arranged in the power cable line of the present invention. It is a cross-sectional schematic explanatory view of the power cable line of FIG.
１・・・・電力ケーブル ２・・・・内部冷却用管路 ２ａ・・・通路 ３・・・・結束用テープ ４・・・・外部冷却用管路 ４ａ・・・通路 ５・・・・内圧、軸力補強条層 ６・・・・プラスチック防食被覆層 １１・・・・導体 １２・・・・絶縁体層 １３・・・・ワイヤーシールド層 １４・・・・ステンレス被覆層 １５・・・・ポリエチレン防食被覆層 1 ...- Power cable 2 ...- Internal cooling pipe 2a ... Passage 3 ... Bundling tape 4 ... External cooling pipe 4a ... Passage 5 ... Internal pressure, axial force reinforcing strip layer 6 ... Plastic anticorrosion coating layer 11 ... Conductor 12 ... Insulator layer 13 ... Wire shield layer 14 ... Stainless steel coating layer 15 ...・ Polyethylene anticorrosion coating
Claims (3)
とを、その断面が真円に近いように複合し、該複合体の
外側に前記電力ケーブルおよび前記内部管路を覆うよう
に冷却液体輸送用外部管路を設けたことを特徴とする電
力ケーブル線路。1. A power liquid and an internal conduit for transporting a cooling liquid are compounded so that the cross section thereof is close to a perfect circle, and a cooling liquid is provided outside the composite so as to cover the power cable and the internal conduit. An electric power cable line that is provided with an external transportation pipeline.
に設けた冷却液体輸送用外部管路が、内径の５％以下の
肉厚のプラスチック製パイプの外周に、非磁性材製型条
体をロングピッチで巻いたものであることを特徴とする
請求項１記載の電力ケーブル線路。2. An outer pipe for transporting a cooling liquid, which is provided so as to cover the power cable and the inner pipe, has a non-magnetic material-shaped strip on the outer periphery of a plastic pipe having a wall thickness of 5% or less of the inner diameter. The power cable line according to claim 1, which is wound at a long pitch.
パイプが、ポリエチレン製パイプであることを特徴とす
る請求項２記載の電力ケーブル線路。3. The electric power cable line according to claim 2, wherein the plastic pipe having a wall thickness of 5% or less of the inner diameter is a polyethylene pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6012078A JPH07211155A (en) | 1994-01-07 | 1994-01-07 | Power cable line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6012078A JPH07211155A (en) | 1994-01-07 | 1994-01-07 | Power cable line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07211155A true JPH07211155A (en) | 1995-08-11 |
Family
ID=11795556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6012078A Pending JPH07211155A (en) | 1994-01-07 | 1994-01-07 | Power cable line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07211155A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2007032391A1 (en) * | 2005-09-13 | 2009-03-19 | 株式会社オートネットワーク技術研究所 | Conductor for vehicle |
| WO2022049995A1 (en) * | 2020-09-01 | 2022-03-10 | 住友電装株式会社 | Covered electrical wire |
| CN114724763A (en) * | 2022-03-10 | 2022-07-08 | 远东电缆有限公司 | Power transmission cable and manufacturing method thereof |
| CN117316517A (en) * | 2023-10-26 | 2023-12-29 | 江苏天诚智能集团有限公司 | Energy power cooling cable |
| CN117316517B (en) * | 2023-10-26 | 2024-05-14 | 江苏天诚智能集团股份有限公司 | Energy power cooling cable |
-
1994
- 1994-01-07 JP JP6012078A patent/JPH07211155A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2007032391A1 (en) * | 2005-09-13 | 2009-03-19 | 株式会社オートネットワーク技術研究所 | Conductor for vehicle |
| WO2022049995A1 (en) * | 2020-09-01 | 2022-03-10 | 住友電装株式会社 | Covered electrical wire |
| CN114724763A (en) * | 2022-03-10 | 2022-07-08 | 远东电缆有限公司 | Power transmission cable and manufacturing method thereof |
| CN117316517A (en) * | 2023-10-26 | 2023-12-29 | 江苏天诚智能集团有限公司 | Energy power cooling cable |
| CN117316517B (en) * | 2023-10-26 | 2024-05-14 | 江苏天诚智能集团股份有限公司 | Energy power cooling cable |
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