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CN111692051B - Cooling and ventilation system of floating wind generating set - Google Patents

Cooling and ventilation system of floating wind generating set Download PDF

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Publication number
CN111692051B
CN111692051B CN202010693080.9A CN202010693080A CN111692051B CN 111692051 B CN111692051 B CN 111692051B CN 202010693080 A CN202010693080 A CN 202010693080A CN 111692051 B CN111692051 B CN 111692051B
Authority
CN
China
Prior art keywords
air
cooling
floating
air cooler
floating wind
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.)
Active
Application number
CN202010693080.9A
Other languages
Chinese (zh)
Other versions
CN111692051A (en
Inventor
陈帅
侯承宇
董晔弘
仵文松
刘涛
周昊
周舒旎
蒋运和
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Shipbuilding Haizhuang Wind Power Co ltd
Original Assignee
China Shipbuilding Haizhuang Wind Power Co ltd
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Filing date
Publication date
Application filed by China Shipbuilding Haizhuang Wind Power Co ltd filed Critical China Shipbuilding Haizhuang Wind Power Co ltd
Priority to CN202010693080.9A priority Critical patent/CN111692051B/en
Publication of CN111692051A publication Critical patent/CN111692051A/en
Application granted granted Critical
Publication of CN111692051B publication Critical patent/CN111692051B/en
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Classifications

    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/22—Foundations specially adapted for wind motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • 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
    • F03D80/60—Cooling or heating of wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
    • F24F1/58—Separate protective covers for outdoor units, e.g. solar guards, snow shields or camouflage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003—Exclusively-fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/085—Cooling by ambient air
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/16—Water cooling
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20927—Liquid coolant without phase change
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20945—Thermal management, e.g. inverter temperature control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4433—Floating structures carrying electric power plants
    • B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
    • 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
    • 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
    • Y02E10/727—Offshore wind turbines
    • 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
    • Y02E10/728—Onshore wind turbines
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Wind Motors (AREA)

Abstract

The invention provides a cooling and ventilation system of a floating wind generating set, comprising: the air cooler is arranged on the outer wall of a floating foundation of the floating wind generating set and is positioned above the water surface; the air inlet pipe is arranged on the outer wall of the floating foundation and is positioned above the water surface and used for introducing external air into the floating foundation; the air guide pipe is arranged in the floating foundation, the upper port of the air guide pipe is communicated with the air cooler, and the lower port of the air guide pipe is positioned below the water surface; the pipeline is connected with the part to be cooled, the water pump and the air cooler in series in sequence to form a loop for circulating cooling liquid; and the controller is electrically connected with the air cooler and the water pump respectively and is used for controlling the on and off of the air cooler and the water pump. The invention can solve the technical problems that the traditional cooling system and ventilation equipment of the floating wind generating set are two sets of independent devices, the manufacturing cost is high, and the cooling effect of the cooling system is not good enough under the high-temperature environment condition.

Description

Cooling and ventilation system of floating wind generating set
Technical Field
The invention relates to the technical field of wind generating sets, in particular to a cooling and ventilating system of a floating wind generating set.
Background
In the construction of the offshore wind farm, when the water depth is greater than 60 meters, compared with a wind generating set with a fixed foundation, the technical and economic indexes of the wind generating set with a floating foundation can be greatly improved, the wind generating set is not limited by the water depth, and the hoisting of the wind generating set can be simplified, so that the floating wind generating set has become a necessary trend of the construction of the offshore wind farm with the water depth of more than 60 meters.
The existing cooling system of the floating wind generating set basically directly uses a cooling system of a fixed foundation, and uses an air-water cooling system to cool and dissipate heat of a transformer and a converter. The system brings out heat generated by the transformer and the converter through cooling liquid, conveys high-temperature cooling liquid to an air cooler arranged outside the tower, forcibly sucks air with lower external temperature by using a fan to flow through the radiator, cools the high-temperature cooling liquid, and conveys the cooled cooling liquid to flow back to the transformer and the converter for circulation. The cooling system mainly relies on heat exchange with the outside environment air to realize cooling of the cooling liquid, so that the cooling performance of the cooling system is directly affected by the temperature of the environment, and the cooling effect is not good enough under the high-temperature environment condition. For a floating wind generating set with the same heat dissipation power requirement, if an air cooler with larger heat dissipation capacity is needed to achieve a preset cooling effect in a high-temperature environment, such as a south sea area of China, the manufacturing cost of the floating wind generating set is increased.
Meanwhile, as the floating foundation is large in volume and part of the inner cabin is below the water surface for a long time, the natural ventilation effect of the inner space of the floating foundation is poor, and therefore special ventilation equipment is required to be additionally arranged for the floating wind generating set, sufficient air is provided for workers entering the floating foundation for maintenance, and the safety of the workers is ensured. Because ventilation is a form of convective heat dissipation, such ventilation devices also have a somewhat related impact on the cooling effect of the floating wind turbine cooling system.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a cooling and ventilation system of a floating wind generating set, which aims to solve the technical problems that the traditional cooling system and ventilation equipment of the floating wind generating set in the prior art are two independent devices, the manufacturing cost is high, and the cooling effect of the cooling system is not good enough under the high-temperature environment condition.
The invention adopts the technical scheme that the cooling and ventilation system of the floating wind generating set is provided;
In a first implementation, the method includes:
the air cooler is arranged on the outer wall of a floating foundation of the floating wind generating set and is positioned above the water surface;
the air inlet pipe is arranged on the outer wall of the floating foundation and is positioned above the water surface and used for introducing external air into the floating foundation;
The air guide pipe is arranged in the floating foundation, the upper port of the air guide pipe is communicated with the air cooler, and the lower port of the air guide pipe is positioned below the water surface;
The pipeline is connected with the part to be cooled, the water pump and the air cooler in series in sequence to form a loop for circulating cooling liquid; and
And the controller is electrically connected with the air cooler and the water pump respectively and is used for controlling the on and off of the air cooler and the water pump.
In combination with the first implementation manner, in a second implementation manner, the water pump, the component to be cooled and the controller are arranged inside a tower of the floating wind generating set.
In combination with the first or second possible implementation manner, in a third possible implementation manner, the component to be cooled includes a transformer and a converter.
In combination with the first implementation manner, in a fourth implementation manner, the air guide pipe is installed below the top platform of the floating foundation.
In combination with the first implementation manner, in a fifth implementation manner, the air inlet pipe is arranged at the top of the side wall of the floating foundation, and one end of the air inlet pipe connected with the air inlet is bent downwards.
In combination with any one of the first, fourth and fifth realizable modes, in a sixth realizable mode, the device further comprises a first protection net and a second protection net; the first protection net is arranged at the air inlet of the air inlet pipe, and the second protection net is arranged at the top of the air guide pipe.
In combination with the first implementation manner, in a seventh implementation manner, an area of an air inlet of the air inlet pipe is not smaller than 2 times of an area of an air duct of the air guide pipe.
With reference to the first implementation, in an eighth implementation, the cooling and ventilation system includes a normal operating mode and a maintenance mode;
in the normal working mode, the controller is used for controlling the on/off of the air cooler and the water pump;
in the maintenance mode, the controller is used to control the on and off of the air cooler.
In combination with the first implementation manner, in a ninth implementation manner, the air cooler further includes a rain shield disposed above the air cooler.
According to the technical scheme, the beneficial technical effects of the invention are as follows:
1. The functions of the two independent devices, namely the cooling system and the ventilation equipment, are integrated into one system, the seawater is used as a radiator for radiating, so that the problem that the cooling effect of the cooling system is not good enough under the high-temperature environment condition can be solved, the ventilation problem in the floating foundation can be solved, the different functions of the two independent devices are realized by one system, and the manufacturing cost is reduced.
2. By using the technical scheme of the invention, the number of parts of the floating wind generating set can be reduced, and the failure rate of the whole wind generating set can be reduced.
3. One end of the air inlet pipe connected with the air inlet is bent downwards, and the air inlet of the air inlet pipe is provided with a protective net, so that foreign objects can be prevented from entering the interior of the floating foundation to cause damage, and the safety is improved. The top of the air guide pipe is provided with the protective net, so that foreign matters or workers can be prevented from falling into the air guide pipe, and the safety is improved.
4. The rain shield can prevent rainwater from dripping on the air cooler to cause corrosive damage to the air cooler, and the service life of the air cooler is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a system block diagram of the present invention.
Reference numerals:
1-floating foundation, 2-pipeline, 3-rain shield, 4-air cooler, 5-air inlet pipe, 6-air guide pipe, 7-water pump, 8-transformer, 9-controller, 20-water surface, 30-tower.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs.
Example 1
As shown in fig. 1 and 2, the present invention provides a cooling and ventilation system of a floating wind power generation set, comprising:
the air cooler 4 is arranged on the outer wall of the floating foundation 1 of the floating wind generating set and is positioned above the water surface 20;
An air inlet pipe 5 arranged on the outer wall of the floating foundation 1 and positioned above the water surface 20 for introducing external air into the floating foundation 1;
The air guide pipe 6 is arranged in the floating foundation 1, the upper port of the air guide pipe 6 is communicated with the air cooler 4, and the lower port of the air guide pipe is positioned below the water surface 20;
The pipeline 2 is connected with a part 8 to be cooled, a water pump 7 and the air cooler 4 in series in sequence to form a loop for circulating cooling liquid; and
And the controller 9 is electrically connected with the air cooler 4 and the water pump 7 respectively, and is used for controlling the on and off of the air cooler 4 and the water pump 7.
The working principle of the embodiment 1 is described in detail as follows:
first, the structure of the cooling and ventilation system of the present embodiment will be further described.
In the present embodiment, the water pump 7, the component to be cooled 8 and the controller 9 are preferably provided inside the tower 30 of the floating wind power generation set, and the component to be cooled 8 includes a transformer and a converter. The water pump 7 and the controller 9 are arranged in the tower 30, so that salt fog and damp and hot influences on the sea can be effectively isolated, and the service lives of the water pump 7 and the controller 9 are prolonged. The air guide pipe 6 is arranged below the top platform of the floating foundation 1, preferably, the air guide pipe 6 is vertically downwards arranged, and the air duct is vertical, so that better ventilation effect can be obtained; the lower port of the air guide pipe 6 is located below the water surface 20, but is not submerged in the water, but is in communication with the bottom air inside the floating foundation 1. The air inlet pipe 5 is arranged at the top of the side wall of the floating foundation 1, one end of the air inlet pipe 5 connected with the air inlet is bent downwards, and the air falling object can be prevented from entering the floating foundation to be damaged. The duct shape of the air inlet duct 5 is not limited, and may be circular or square in the present embodiment. The air inlet area of the air inlet pipe 5 is not smaller than 2 times of the air channel area of the air guide pipe 6, namely, the air inlet area of the air inlet pipe 5 is 2 times or more than the air channel area of the air guide pipe 6. In this way, it is ensured that sufficient external air enters the floating foundation 1, and specifically, in this embodiment, in order to achieve a better air convection effect, the area of the air duct of the air guide tube is preferably more than 1 square meter.
The air cooler 4 is arranged on the outer wall of the floating foundation 1 of the floating wind generating set and is positioned above the water surface 20, and a fan of the air cooler is communicated with the outside air; preferably, the air cooler 4 is mounted on the top platform of the floating foundation 1, so that a better air suction effect can be obtained. The connection manner of the pipeline 2 and the air cooler 4 and the component 8 to be cooled is not limited, and in this embodiment, a part of the pipeline may be mounted on the outer walls of the shells of the air cooler 4 and the component 8 to be cooled in a spiral manner.
In this embodiment, the cooling and ventilation system has two modes of operation, normal and maintenance.
In the normal working mode, the floating wind generating set is in a normal working condition. The floating wind generating set is in grid-connected operation, and the controller 9 is used for controlling the on and off of the air cooler 4 and the water pump 7. The controller 9 sends out instructions to the water pump 7 to start the water pump 7 to work. The cooling liquid starts to circulate in the pipeline 2 under the action of the water pump 7, and when the temperature of the cooling liquid is more than or equal to the set temperature, the controller 9 controls the starting of the air cooler 4. The fan of the air cooler 4 rotates, and air with lower temperature is extracted from the inner space below the water surface of the floating foundation 1 through the air guide pipe 6, so that the cooling liquid passing through the air cooler 4 is cooled. Because the air cooler 4 is from the inside lower air of extraction temperature of floating basis 1, the inside atmospheric pressure of floating basis 1 can become low, be less than external air atmospheric pressure, and the higher air of external temperature can pass through air-supply line 5 this moment, inside entering floating basis 1 naturally, in the in-process that gets into and the inside lower air of floating basis 1 fully mixes to by external sea water cooling gradually, rethread guide duct 6 cools off the coolant liquid that passes through air cooler 4, so circulates. Because the floating foundation 1 has large internal space and part of the floating foundation is under the water surface for a long time, and the temperature of the part of the air under the water surface is lower than that of the air in the external environment, the part under the water surface of the floating foundation 1 can be regarded as a radiator, and the heat in the air can be directly taken away through indirect heat exchange with the seawater. Compared with the traditional cold air system of the floating wind generating set, the cooling and ventilating system has better heat dissipation effect by heat exchange with the air in the external environment.
In the maintenance mode, a worker is required to enter the floating foundation 1 to maintain equipment, and the main control system of the floating wind generating set is switched to the maintenance mode. In the maintenance mode, the controller 9 is used to control the on and off of the air cooler 4, and no longer controls the on and off of the water pump 7. At this time, the controller 9 sends out a command to start the air cooler 4, and the air cooler 4 serves as a ventilation device in a maintenance mode to pump out the air at the bottom of the floating foundation 1, and the fresh air in the external environment naturally enters the inside of the floating foundation 1 through the air inlet pipe 5. So circulated, provide sufficient fresh air for the inside of floating foundation 1, guarantee staff's personal safety.
The floating foundation of the current floating wind generating set mainly comprises four types of spar, TLP, semi-submersible and barge, and the cooling and ventilation system of the embodiment can be suitable for the two floating foundations of the semi-submersible and the barge. The functions of the two independent devices, namely the cooling system and the ventilation equipment, are integrated into one system, the seawater is used as a radiator for radiating, so that the problem that the cooling effect of the cooling system is not good enough under the high-temperature environment condition can be solved, the ventilation problem in the floating foundation can be solved, the different functions of the two independent devices are realized by one system, and the manufacturing cost is reduced. Meanwhile, the number of components of the floating wind generating set can be reduced, and the failure rate of the whole wind generating set is reduced.
Example 2
When maintaining the equipment of floating foundation 1 inside, the staff can get into the inside operation of floating foundation 1, because of embodiment 1 is equipped with guide duct 6 in the inside of floating foundation 1, and the area in guide duct wind channel is more than 1 square meter, and the staff is likely to be lost enough when the operation like this and falls into the guide duct, has the potential safety hazard. Meanwhile, one end of the air inlet pipe 5 connected with the air inlet is bent downwards, so that although the damage caused by the falling objects in the air entering the interior of the floating foundation can be prevented, accidents such as flying birds into the floating foundation can not be well prevented, and potential safety hazards exist.
In order to solve the technical problems, the cooling and ventilation system further comprises a first protection net and a second protection net by adopting the following technical scheme based on the embodiment 1; the first protection network is arranged at the air inlet of the air inlet pipe 5, and the second protection network is arranged at the top of the air guide pipe 6. The shape and the material of the protective net are not limited, and in this embodiment, a stainless steel metal net can be used, so that salt mist and damp heat influence on the sea can be reduced, and the service life of the protective net can be prolonged. The installation mode of the protection net is not limited, and in the embodiment, a riveting and threaded connection mode can be adopted for example, so that better connection strength is provided, and the vibration influence caused by sea surface jolting is resisted.
Through the installation protection network, can prevent that birds etc. foreign matter from getting into the inside of floating the basis and causing the destruction, promote the security. The top of the air guide pipe is provided with the protective net, so that foreign matters or workers can be prevented from falling into the air guide pipe, and the safety is improved.
Example 3
In embodiment 1, as shown in fig. 1, the air cooler 4 is installed on the top platform of the floating base 1, and when it is rained, rainwater directly falls to the air cooler 4, which affects the service life of the air cooler 4, such as short-circuit failure.
In order to solve the technical problems, the following technical scheme is adopted on the basis of embodiment 1, wherein a rain shield is arranged above the air cooler, the shape, the size and the material of the rain shield are not limited, and the rain shield can completely cover the air cooler, so that rainwater cannot drop onto the air cooler. The installation mode of the rain shield is not limited, and in the embodiment, the mode of riveting and threaded connection can be adopted for example, so that better connection strength is provided, and the vibration influence caused by sea surface jolting is resisted.
The rain shield can prevent rainwater from dripping on the air cooler to cause corrosive damage to the air cooler, and the service life of the air cooler is prolonged.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.

Claims (8)

1. A cooling and ventilation system for a floating wind power generation unit, comprising:
The air cooler (4) is arranged on the outer wall of the floating foundation (1) of the floating wind generating set and is positioned above the water surface (20);
An air inlet pipe (5) arranged on the outer wall of the floating foundation (1) and positioned above the water surface (20) for introducing external air into the floating foundation (1);
the air guide pipe (6) is arranged in the floating foundation (1), the upper port of the air guide pipe (6) is communicated with the air cooler (4), and the lower port of the air guide pipe is positioned below the water surface (20);
the pipeline (2) is sequentially connected with a part (8) to be cooled, a water pump (7) and the air cooler (4) in series to form a loop for circulating cooling liquid; and
The controller (9) is electrically connected with the air cooler (4) and the water pump (7) respectively and is used for controlling the opening and closing of the air cooler (4) and the water pump (7);
The cooling and ventilation system of the floating wind generating set comprises a normal working mode and a maintenance mode; in a normal working mode, the controller (9) is used for controlling the on/off of the air cooler (4) and the water pump (7); in a maintenance mode, the controller (9) is used for controlling the on/off of the air cooler (4).
2. A cooling and ventilation system for a floating wind power generation unit according to claim 1, wherein: the water pump (7), the part to be cooled (8) and the controller (9) are arranged inside a tower (30) of the floating wind generating set.
3. A cooling and ventilation system for a floating wind power generation unit according to claim 1 or 2, characterized in that: the component (8) to be cooled comprises a transformer and a converter.
4. A cooling and ventilation system for a floating wind power generation unit according to claim 1, wherein: the air guide pipe (6) is arranged below the top platform of the floating foundation (1).
5. A cooling and ventilation system for a floating wind power generation unit according to claim 1, wherein: the air inlet pipe (5) is arranged at the top of the side wall of the floating foundation (1), and one end, connected with the air inlet, of the air inlet pipe (5) is bent downwards.
6. A cooling and ventilation system for a floating wind power generation unit according to any one of claims 1,4, 5, wherein: the device also comprises a first protective net and a second protective net; the first protective net is arranged at an air inlet of the air inlet pipe (5), and the second protective net is arranged at the top of the air guide pipe (6).
7. A cooling and ventilation system for a floating wind power generation unit according to claim 1, wherein: the area of the air inlet pipe (5) is not smaller than 2 times of the area of the air channel of the air guide pipe (6).
8. A cooling and ventilation system for a floating wind power generation unit according to claim 1, wherein: the air cooler also comprises a rain shield (3), wherein the rain shield (3) is arranged above the air cooler (4).
CN202010693080.9A 2020-07-17 2020-07-17 Cooling and ventilation system of floating wind generating set Active CN111692051B (en)

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