CN110932163A - Method for installing a DC cable in a nacelle of a wind turbine - Google Patents
Method for installing a DC cable in a nacelle of a wind turbine Download PDFInfo
- Publication number
- CN110932163A CN110932163A CN201911232869.8A CN201911232869A CN110932163A CN 110932163 A CN110932163 A CN 110932163A CN 201911232869 A CN201911232869 A CN 201911232869A CN 110932163 A CN110932163 A CN 110932163A
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- cable
- installing
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- cables
- core
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Classifications
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- 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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/80—Arrangement of components within nacelles or towers
- F03D80/82—Arrangement of components within nacelles or towers of electrical components
- F03D80/85—Cabling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a method for installing a direct current cable in a cabin of a wind turbine, which comprises the following steps: s1, respectively pulling the heads of the four cables to a cable ladder frame and to a cabin duct end to ensure that the cables have allowance below the inverter end on the machine side; s2, connecting a cable connector at the inverter end of the machine side with a bus system, and installing an EMC clamp; s3, pulling cables to the cabin conduit end to enable the redundant cables to be pulled through the conduit completely, and fixing the cables on the cable ladder rack; s4, mounting an EMC clamp on the cable and the corresponding cabin conduit thereof, and connecting the EMC clamp through EMC bonding wires; s5, peeling off the outer sheath of the cable, sleeving two layers of heat shrinkage films on the exposed wire core, smearing sealant, and respectively installing 7-finger tap joints; s6, installing a single-core clamping array, and pressing 7 wire cores into the clamping array respectively and then labeling; and S7, removing the heat shrinkage film, cleaning, installing a roller sleeve and a safety bolt connector, and dismantling the single-core clamping array. The method is simple, easy to operate practically and high in working efficiency.
Description
Technical Field
The invention relates to a method for installing a direct current cable in a nacelle of a wind turbine.
Background
Up to now, the installation of the main cable of the overhanging section of the upper tower drum in the wind power industry is basically carried out as follows: the main cable is prepared in advance, the main cable is placed in the engine room before the engine room is hoisted, and after the unit is hoisted, the single main cable is sequentially installed from top to bottom. Taking a 3MW unit as an example, when the power cable is installed, two persons hold the cable together at the platform on the main machine frame of the engine room, and power cables of more than 20 meters are placed downwards; one person is at a platform in the cabin and prepares to mount and fasten the sealing module; one person is at the saddle bridge where the cables are fixed and sequenced. The operation is high in labor intensity, long in operation time and high in cost, and the erected cable is not stable and tight.
Disclosure of Invention
The object of the invention is to provide a method for installing a dc cable in a nacelle of a wind turbine
The technical scheme for realizing the purpose of the invention is as follows: method for installing a dc cable in a nacelle of a wind turbine, comprising the steps of:
the method comprises the following steps that firstly, the head parts of 1 cable are pulled to a cable ladder rack from a cable drum and are pulled to a cabin conduit end;
step two, after the cable is completely pulled out from the cable reel, the cable is placed on the cable ladder frame, and more cables than required are ensured, so that the cable has enough allowance below the inverter end on the machine side;
connecting a cable connector at the inverter end of the machine side with a bus system, and then installing an EMC clamp on a cable;
step four, continuing pulling the cable to the cabin conduit end to enable the redundant cable to be pulled through the conduit completely, and then fixing the cable on the cable ladder frame by using the cable clamp;
fifthly, installing the other three cables according to the first to fourth steps;
sixthly, screwing bolts of all cable clamps and EMC clamps;
installing EMC clamps on the cable and the corresponding cabin guide pipe, and connecting the EMC clamps on the cable and the corresponding cabin guide pipe through EMC bonding wires;
step eight, cutting off redundant cables;
peeling off the outer sheaths of the four cables, sleeving two layers of heat shrinkage films on the exposed wire cores, and then coating the sealant;
step ten, respectively installing 7-finger tapping connectors for the four cables;
step eleven, installing a single-core clamping array;
step twelve, pressing the No. 1 wire core of one cable into the No. 1 position of the single-core clamping array, then cutting off the redundant length of the No. 1 wire core, and attaching a cable/wire marking label;
step thirteen, marking and cutting off No. 2-7 wire cores according to the step twelve;
fourteen, after all the wire cores are cut off, peeling off the heat shrinkage film;
step fifteen, cleaning the core wire insulating layer and installing a roller sleeve on the core wire insulating layer;
sixthly, installing a safety bolt connector, and confirming that the safety bolt connector is installed at the center +/-10 mm of the single-core clamping array;
seventhly, after the safety bolt connectors of the four cables are completely installed, detaching the single-core clamp array;
eighteen, installing a protection device to prevent dust, water and moisture from entering the safety bolt joint during transportation and storage.
The first step is specifically as follows: the cable drum is placed at the rear of the nacelle and the cable is then guided by rollers on the cable ladder to pull the cable towards the conduit from the nacelle to the tower.
And step four, when 1 cable is passed through the EMC clamp, the EMC shielding layer of the cable is required to be ensured to pass through 50 +/-1 mm of the EMC clamp.
The cutting position of the step eight is 1140 mm +/-10 mm below the cabin guide pipe.
Before installing the safety bolt connector in the sixteenth step, whether a bare wire with the diameter of about 1-5mm can be seen on the wire core needs to be checked, and the wire core conductor can reach the bottom of the safety bolt connector.
The eighteenth step specifically comprises the following steps:
step 18.1, screwing down the bolt on the safety bolt connector by hand, and then sleeving a safety bolt protective cover on the outer part of the safety bolt connector;
step 18.2, confirming that the moisture-proof bag is airtight and has no holes or scratches;
18.3, sealing the whole cable terminal through the moisture-proof bag to enable the moisture-proof layer of the moisture-proof bag to be attached to the exposed part of the cable;
and step 18.4, sleeving a drying bag outside the moisture-proof bag.
By adopting the technical scheme, the invention has the following beneficial effects:
1. the installation method of the direct current cable in the wind turbine cabin is simple and easy to implement, time-saving and labor-saving, high in working efficiency, simple in structure of various required tools and equipment, convenient to use and large-scale production and use, and the cable installed by the method is good in sealing performance, not easy to slide, convenient to replace and wide in application range.
2. The installation method of the direct current cable in the wind turbine cabin guides the cable through the roller on the cable ladder frame, and the cable is pulled to the guide pipe from the cabin to the tower, so that the installation difficulty is reduced, and the installation time consumption and the installation cost are further reduced.
3. According to the invention, the single-core clamping array is used for clamping the wire core, so that the stress is effectively reduced, and the installation is safer and more stable; and the single-core clamping array can also be used for positioning the safety bolt connector, so that the mounting accuracy is ensured, the mounting difficulty is reduced, and the mounting time consumption and cost are further reduced.
4. The installation method of the direct current cable in the wind turbine cabin ensures that the EMC shielding layer of the cable penetrates through the EMC clamp by 50 +/-1 mm, and the cable is clamped by a sufficient distance to ensure stable clamping.
5. The installation method of the direct current cable in the wind turbine cabin has the cutting position of 1140 +/-10 mm below the cabin guide pipe, so that enough length is reserved, and the convenience in subsequent connection is ensured.
6. According to the installation method of the direct current cable in the wind turbine cabin, the exposed lead of the wire core is controlled to be 1-5mm, the wire core conductor can reach the bottom of the safety bolt connector, the connection is stable, and the direct current cable is not easy to fall off.
7. According to the installation method of the direct current cable in the wind turbine cabin, the moisture-proof bag and the drying bag are added after the bolt protection covers are installed, the exposed part of the cable is wrapped, and the follow-up connection operation is not affected by wetting and rusting.
Detailed Description
(example 1)
Method for installing a dc cable in a nacelle of a wind turbine, comprising the steps of:
the method comprises the following steps that firstly, a cable drum is placed at the rear part of a cabin, the heads of 1 cable are pulled onto a cable ladder frame from the cable drum, then the cable is guided through rollers on the cable ladder frame, the cable is pulled to a guide pipe from the cabin to a tower and to a cabin guide pipe end, the installation difficulty is effectively reduced, and the installation time consumption and the installation cost are further reduced;
step two, after the cable is completely pulled out from the cable reel, the cable is placed on the cable ladder frame, and more cables than required are ensured, so that the cable has enough allowance below the inverter end on the machine side, and the subsequent operation is facilitated;
connecting a cable connector at the inverter end of the machine side with a bus system, and then installing an EMC clamp on a cable;
step four, continuing pulling the cable to the cabin conduit end to enable the redundant cable to be pulled through the conduit completely, and then fixing the cable on the cable ladder frame by using the cable clamp; when the cable is led through the EMC clamp, the EMC shielding layer of the cable is required to be ensured to penetrate through 50 +/-1 mm of the EMC clamp, and a sufficient clamping distance is required to ensure stable clamping;
fifthly, installing the other three cables according to the first to fourth steps;
sixthly, screwing bolts of all cable clamps and EMC clamps;
installing EMC clamps on the cable and the corresponding cabin guide pipe, and connecting the EMC clamps on the cable and the corresponding cabin guide pipe through EMC bonding wires;
cutting off redundant cables, wherein the cutting-off position is 1140 +/-10 mm below the cabin conduit, so that enough length is reserved, and convenience in subsequent connection is ensured;
peeling off the outer sheaths of the four cables, sleeving two layers of heat shrinkage films on the exposed wire cores, and then coating the sealant;
step ten, respectively installing 7-finger tapping connectors for the four cables;
step eleven, installing a single-core clamping array, and reducing stress through the single-core clamping array, so that the installation is safer and more stable;
step twelve, pressing the No. 1 wire core of one cable into the No. 1 position of the single-core clamping array, then cutting off the redundant length of the No. 1 wire core, and attaching a cable/wire marking label;
step thirteen, marking and cutting off No. 2-7 wire cores according to the step twelve;
fourteen, after all the wire cores are cut off, peeling off the heat shrinkage film;
step fifteen, cleaning the core wire insulating layer and installing a roller sleeve on the core wire insulating layer;
sixthly, checking whether the exposed lead wire with the diameter of about 1-5mm is visible on the wire core, ensuring that the wire core conductor can reach the bottom of the safety bolt connector, ensuring that the subsequent connection is stable and is not easy to fall off; after the inspection is finished, the safety bolt connector is installed, the safety bolt connector is confirmed to be installed at the +/-10 mm center of the single-core clamping array, the single-core clamping array is used for positioning, the installation accuracy is guaranteed, the installation difficulty is reduced, and the installation time consumption and the installation cost are further reduced;
seventhly, after the safety bolt connectors of the four cables are completely installed, detaching the single-core clamp array;
eighteen, installing a protection device to prevent dust, water and moisture from entering the safety bolt joint during transportation and storage.
The eighteenth step specifically comprises the following steps:
step 18.1, screwing down the bolt on the safety bolt connector by hand, and then sleeving a safety bolt protective cover on the outer part of the safety bolt connector;
step 18.2, confirming that the moisture-proof bag is airtight and has no holes or scratches;
18.3, sealing the whole cable terminal through the moisture-proof bag to enable the moisture-proof layer of the moisture-proof bag to be attached to the exposed part of the cable;
and step 18.4, sleeving a drying bag outside the moisture-proof bag.
Increase dampproofing bag and dry bag behind the installation bolt safety cover, the part that exposes of parcel cable ensures not to rust because of getting damp and influence follow-up connection operation.
The installation method of the direct current cable in the wind turbine cabin is simple and easy to implement, time-saving and labor-saving, high in working efficiency, simple in structure of various required tools and equipment, convenient to use and large-scale production and use, and the cable installed by the method is good in sealing performance, not easy to slide, convenient to replace and wide in application range.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. Method for installing a direct current cable in a nacelle of a wind turbine, characterized in that: the method comprises the following steps:
the method comprises the following steps that firstly, the head parts of 1 cable are pulled to a cable ladder rack from a cable drum and are pulled to a cabin conduit end;
step two, after the cable is completely pulled out from the cable reel, the cable is placed on the cable ladder frame, and more cables than required are ensured, so that the cable has enough allowance below the inverter end on the machine side;
connecting a cable connector at the inverter end of the machine side with a bus system, and then installing an EMC clamp on a cable;
step four, continuing pulling the cable to the cabin conduit end to enable the redundant cable to be pulled through the conduit completely, and then fixing the cable on the cable ladder frame by using the cable clamp;
fifthly, installing the other three cables according to the first to fourth steps;
sixthly, screwing bolts of all cable clamps and EMC clamps;
installing EMC clamps on the cable and the corresponding cabin guide pipe, and connecting the EMC clamps on the cable and the corresponding cabin guide pipe through EMC bonding wires;
step eight, cutting off redundant cables;
peeling off the outer sheaths of the four cables, sleeving two layers of heat shrinkage films on the exposed wire cores, and then coating the sealant;
step ten, respectively installing 7-finger tapping connectors for the four cables;
step eleven, installing a single-core clamping array;
step twelve, pressing the No. 1 wire core of one cable into the No. 1 position of the single-core clamping array, then cutting off the redundant length of the No. 1 wire core, and attaching a cable/wire marking label;
step thirteen, marking and cutting off No. 2-7 wire cores according to the step twelve;
fourteen, after all the wire cores are cut off, peeling off the heat shrinkage film;
step fifteen, cleaning the core wire insulating layer and installing a roller sleeve on the core wire insulating layer;
sixthly, installing a safety bolt connector, and confirming that the safety bolt connector is installed at the center +/-10 mm of the single-core clamping array;
seventhly, after the safety bolt connectors of the four cables are completely installed, detaching the single-core clamping array;
eighteen, installing a protection device to prevent dust, water and moisture from entering the safety bolt joint during transportation and storage.
2. The method of installing a dc cable in a wind turbine nacelle according to claim 1, wherein: the first step is specifically as follows: the cable drum is placed at the rear of the nacelle and the cable is then guided by rollers on the cable ladder to pull the cable towards the conduit from the nacelle to the tower.
3. The method of installing a dc cable in a wind turbine nacelle according to claim 1, wherein: and step four, when 1 cable is passed through the EMC clamp, the EMC shielding layer of the cable is required to be ensured to pass through 50 +/-1 mm of the EMC clamp.
4. The method of installing a dc cable in a wind turbine nacelle according to claim 1, wherein: the cutting position of the step eight is 1140 mm +/-10 mm below the cabin guide pipe.
5. The method of installing a dc cable in a wind turbine nacelle according to claim 1, wherein: before installing the safety bolt connector in the sixteenth step, whether a bare wire with the diameter of about 1-5mm can be seen on the wire core needs to be checked, and the wire core conductor can reach the bottom of the safety bolt connector.
6. The method of installing a dc cable in a wind turbine nacelle according to claim 1, wherein: the eighteenth step specifically comprises the following steps:
step 18.1, screwing down the bolt on the safety bolt connector by hand, and then sleeving a safety bolt protective cover on the outer part of the safety bolt connector;
step 18.2, confirming that the moisture-proof bag is airtight and has no holes or scratches;
18.3, sealing the whole cable terminal through the moisture-proof bag to enable the moisture-proof layer of the moisture-proof bag to be attached to the exposed part of the cable;
and step 18.4, sleeving a drying bag outside the moisture-proof bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232869.8A CN110932163B (en) | 2019-12-05 | 2019-12-05 | Method for installing a DC cable in a nacelle of a wind turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232869.8A CN110932163B (en) | 2019-12-05 | 2019-12-05 | Method for installing a DC cable in a nacelle of a wind turbine |
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| Publication Number | Publication Date |
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| CN110932163A true CN110932163A (en) | 2020-03-27 |
| CN110932163B CN110932163B (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911232869.8A Active CN110932163B (en) | 2019-12-05 | 2019-12-05 | Method for installing a DC cable in a nacelle of a wind turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112003195A (en) * | 2020-07-31 | 2020-11-27 | 远东电缆有限公司 | Laying and installing method for torsion-resistant medium-voltage flexible cable for wind power generation |
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| CN103114973A (en) * | 2011-10-26 | 2013-05-22 | 远景能源（江苏）有限公司 | Wind turbine comprising a cable loop |
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2019
- 2019-12-05 CN CN201911232869.8A patent/CN110932163B/en active Active
Patent Citations (4)
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| JP2010268595A (en) * | 2009-05-14 | 2010-11-25 | Furukawa Denko Sangyo Densen Kk | Wind power generator and power cable laying method to wind-power generator |
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| CN105390993A (en) * | 2015-12-11 | 2016-03-09 | 新誉集团有限公司 | Large-size cable laying method for wind turbine generator set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112003195A (en) * | 2020-07-31 | 2020-11-27 | 远东电缆有限公司 | Laying and installing method for torsion-resistant medium-voltage flexible cable for wind power generation |
| CN112003195B (en) * | 2020-07-31 | 2021-09-07 | 远东电缆有限公司 | Laying and installing method for torsion-resistant medium-voltage flexible cable for wind power generation |
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| Publication number | Publication date |
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| CN110932163B (en) | 2020-11-17 |
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