CN107829888A - A kind of the wind power generating set blade de-icing method and system of the heating of partition type hot-air blower - Google Patents

A kind of the wind power generating set blade de-icing method and system of the heating of partition type hot-air blower Download PDF

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Publication number
CN107829888A
CN107829888A CN201711160512.4A CN201711160512A CN107829888A CN 107829888 A CN107829888 A CN 107829888A CN 201711160512 A CN201711160512 A CN 201711160512A CN 107829888 A CN107829888 A CN 107829888A
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heating
blade
icing
subregion
blade root
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CN201711160512.4A
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CN107829888B (en
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罗勇水
涂刚
刘钦东
陈棋
应有
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Zhejiang Windey Co Ltd
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Zhejiang Windey Co Ltd
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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
    • F03D80/40—Ice detection; De-icing means
    • 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
    • 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Wind Motors (AREA)

Abstract

A kind of wind power generating set blade de-icing method of partition type hot-air blower heating, comprises the following steps：A) detect whether to freeze by icing detector and judge icing degree；B) blade root switch board is according to icing deciding degree heating mode, common heating pattern refers to close all piecewise connection pair heating zone pipelines and opens connecting pipe between each subregion, and partition heating pattern is to be controlled the pattern up to deicing is quickly heated to crucial ice field progress piecemeal to corresponding pipeline by blade root switch board；C) deicer carries out being turned on and off corresponding connecting pipe carrying out heating deicing according to the instruction of blade root switch board.And provide a kind of wind power generating set blade deicing system of partition type hot-air blower heating.The present invention improves the efficiency of heating surface of blade inner chamber hot blast clearing ice technology under risk of the guarantee system without thunderbolt by the flow-disturbing inside diminution heating space, increase heating zone, increase.

Description

A kind of wind power generating set blade de-icing method of partition type hot-air blower heating and System
Technical field
The invention belongs to wind power generating set field, is related to the wind-driven generator that a kind of partition type is heated based on hot-air blower Group blade de-icing method and system.It is mainly used in tackling Large-scale Wind Turbines in high humility, the area operation mistake of low temperature The phenomenon that caused blade surface freezes in journey, prevent power drop and shutdown and blade because caused by freezing blade surface Load after icing is caused to damage to blade, and deicing is heated to blade by deicing system, improve the generated energy of Wind turbine with And ensure fan life and safety.
Background technology
Nowadays, improve wind power generating set becomes becoming for wind energy conversion system development to the resistivity of adverse circumstances at work Gesture, south China majority wind power plant in the winter time, the early spring icing phenomenon, the especially Yunnan-Guizhou Plateau, Guangxi, Hubei and Hunan all be present Deng area, air themperature is low, high humidity, often causes efficiency low due to the icing of pneumatic equipment bladess surface and shuts down, moreover, Icing also results in vane airfoil profile geometry and changes the unbalanced moments for causing wind wheel appearance serious, drastically very big blade operation Load, cause blade the catastrophe failure such as ftracture, fracture, or even evoke complete machine intrinsic frequency, collapse, had a strong impact on wind-force Generating set is safe for operation.Therefore, it is extremely urgent to solve the problems, such as that pneumatic equipment bladess surface freezes.
Existing anti-clearing ice technology mainly has the technology of increase blade surface coating, blade inner chamber hot blast deicing skill now Art and blade inlet edge electric heating film laying clearing ice technology.Traditional blade inner chamber hot blast clearing ice technology adds without thunderbolt risk The thermal efficiency is relatively low, and blade inlet edge electric heating film laying clearing ice technology deicing efficiency is high compared to internal logical hot gas, but is easily led to thunder Hit.Therefore,
The content of the invention
In order to overcome prior art to prevent the power drop because caused by freezing wind generator set blade surface and stopping Machine, the blade even brought cracking, fracture the deficiencies of collapsing with unit, and the invention provides a kind of heating of partition type hot-air blower Wind power generating set blade de-icing method and system, the present invention under risk of the system that ensure that without thunderbolt pass through reduce heating Space, increase heating zone, the flow-disturbing inside increase improve the efficiency of heating surface of blade inner chamber hot blast clearing ice technology.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of wind power generating set blade de-icing method of partition type hot-air blower heating, described de-icing method include with Lower step：
A) detect whether to freeze by icing detector and judge icing degree；
B) blade root switch board is according to icing deciding degree heating mode, described heating mode include common heating pattern and Partition heating pattern, common heating pattern refer to close all piecewise connection pair heating zone pipelines and connected between opening each subregion Adapter road；Partition heating pattern is corresponding pipeline to be controlled up to setting crucial ice field by blade root switch board Row piecemeal quickly heats the pattern of deicing；
C) deicer carries out being turned on and off corresponding connecting pipe carrying out heating removing according to the instruction of blade root switch board Ice.
Further, in the step a, described icing degree includes slight freeze and frozen with severe.Distinguish slightly or again The node that degree freezes is configured and changed to the parameter of icing detector according to actual conditions.
A kind of wind power generating set blade deicing system of partition type hot-air blower heating, including icing detector, blade root Switch board and deicer, described icing detector are arranged on afterbody above cabin；Described blade root switch board is installed on leaf At root；Described deicer includes blade root heater, main heating zone, secondary heating zone and connecting pipe, and described blade root adds Thermal includes heater, air blower, connection heating zone connecting pipe；Described main heating zone is main heating region, position In the region of blade inlet edge, the subregion of the main heating zone is spatially uniformly divided；Described secondary heating zone is located at trailing edge, Close to leaf root part there is reflux line to carry out circulating-heating.
Further, described blade root heater is additionally included in the gear that blade leading edge is set with certain position at leading web Plate, described connecting pipe connection heating system and main heating zone.
Further, described each subregion is connected by pipeline, and each subregion is connected by pipeline with secondary heating zone.
Further, turbulent baffle is installed in the subregion.By the uniform heating zone of turbulent baffle, strengthen subregion Heating effect.
Described reflux line is connected on hot-air blower entrance into the oblique circular cylinder bodily form by gradually tapering up connecting pipe at blade root.
Described temperature sensor is distributed in heater conduit outlet, main heating zone subregion 1, subregion 2 ... subregion n, leaf Sharp, secondary heating zone reflux line porch.
Beneficial effects of the present invention are mainly manifested in：After the design of this deicing system, it can effectively realize to leaf Piece leading edge and surface are effectively heated, by the optimization for increasing the devices such as inlet baffle, reverse flow baffle, subregion baffle plate and spoiler Arrangement, it is effective to reduce heating space, add partition heating, the flow-disturbing inside increase, do not improving the power base of air blower Firing rate can be significantly lifted on plinth, concentration heating is carried out to specific region, generally improves the efficiency of heating surface.Solve and add The problem of thermal velocity is slowly and the efficiency of heating surface is low.The problem of effectively can preventing blade surface from freezing, ensure Wind turbine Normal safe operation and normal power generation in the environment easily to freeze.
Brief description of the drawings
Fig. 1 is a kind of embodiment knot of the wind power generating set blade deicing system of partition type hot-air blower heating of the present invention Structure schematic diagram.
Fig. 2 is a kind of wind wheel blade of the wind power generating set blade deicing system of partition type hot-air blower heating of the present invention Example structure schematic diagram.
Fig. 3 is a kind of overall control of the wind power generating set blade de-icing method of partition type hot-air blower heating of the present invention Schematic diagram.
Fig. 4 is a kind of first heating of the wind power generating set blade de-icing method of partition type hot-air blower heating of the present invention Control schematic diagram.
Fig. 5 is a kind of second heating of the wind power generating set blade de-icing method of partition type hot-air blower heating of the present invention Control schematic diagram.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
1~Fig. 5 of reference picture, a kind of wind power generating set blade de-icing method of partition type hot-air blower heating are described De-icing method comprises the following steps：
A) detect whether to freeze by icing detector and judge icing degree；
B) blade root switch board is according to icing deciding degree heating mode, described heating mode include common heating pattern and Partition heating pattern.Common heating pattern refers to close all piecewise connection pair heating zone pipelines and connected between opening each subregion Adapter road.Partition heating pattern is that corresponding pipeline is controlled to reach by blade root switch board to divide crucial ice field Block quickly heats the pattern of deicing；
C) deicer carries out being turned on and off corresponding connecting pipe carrying out heating removing according to the instruction of blade root switch board Ice.
Further, described icing degree includes slight freeze and severe icing.Distinguish the node that slight or severe freezes The parameter of icing detector can be configured and be changed according to actual conditions.
A kind of wind power generating set blade deicing system of partition type hot-air blower heating, including icing detector 3, blade root Switch board 2 and deicer 1, described icing detector are arranged on afterbody above cabin；Described blade root switch board is installed on At blade root.Described deicer is located in blade.
As shown in fig.2, the general of pneumatic equipment bladess is made up of covering, girder, web, blade interior is divided into by web Two big chambers, the wind power generating set blade de-icing method and system of a kind of partition type hot-air blower heating of the present invention are to two chambers Body carries out upgrading, main heating zone and secondary heating zone two parts is proposed, by having to the improved air in blade inner chamber Effect heating.
Specifically, structure of modification is included air blower 101 and heater 102 are installed on leading edge web close at blade root, The main heating zone connecting pipe 103 of heater connection, main heating zone connecting pipe outlet temperature sensor 104, inlet baffle 105, Spoiler 106 in main heating zone, subregion one and the connecting pipe 107 of subregion two, subregion two and blade tip area connecting pipe 108, blade tip Temperature sensor 109, the outlet temperature sensor 110 of subregion two, subregion two and secondary heating zone connecting pipe 111, the temperature of subregion one Sensor 112, subregion one and secondary heating zone connecting pipe 113, reverse flow baffle 114, reflux temperature sensor 115, reflux line 116。
The ginseng such as the number of main heating zone subregion, partition size, spoiler number, spoiler size, spoiler riding position Number passes through optimization design, and general requirement is to ensure that the efficiency of heating surface is higher, can carry out effectively energy accumulation, improve heat transfer effect Fruit.Because the leading edge space close to tip segment is smaller, hot gas can be heated fully, can be according to the selection of space size situation The no setting for terminating subregion.Preferably, it is divided into two subregions, each partition length is at 10 meters or so.Disturbed for three pieces in each subregion Flowing plate, three pieces of spoilers are evenly distributed in subregion, and every piece of spoiler size is the half in place subregion intracavitary section.
Heater, which connects heating zone connecting pipe 103 and reflux line 116, has heat-insulation layer to be arranged on pipe outer wall, guarantees Amount is not lost in, and air circulation is preferably heated to the air of main heating zone and secondary heating zone.Inlet baffle 105 and reverse flow baffle 114 install heat-insulation layer additional in leaf root side, reduce the loss of heat.Preferable inlet baffle 105 is arranged on apart from blade root 20m or so Place.Connecting pipe 107,108,111,113 can be opened and closed according to control requirement.
The nearly exit that temperature sensor is arranged on each subregion is installed, blade tip, in the leaf of secondary heating zone, at reverse flow baffle All mounting temperature sensors, not only monitor each zone temperature and heating different zones are switched with control pipeline, while monitor whole leaf The heating state of piece, data basis is provided for deicing system entirety control strategy.
The setting direction of reverse flow baffle 114 and web direction oblique, are provided with a wide range of collection beneficial to return air, more preferably By integrated air circulating-heating, ensure the uniformity of heating region air.Preferable reverse flow baffle is arranged on apart from blade root 20 At rice.Blade is divided into heating region and non-heated region by the inlet baffle 105 and reverse flow baffle 114 of setting, is efficiently reduced Heating space in blade, has speeded firing rate on the premise of heater power is not improved, improves the efficiency of heating surface, and And the position to freeze still is produced to blade and effectively heated.
As shown in fig.3, detect whether to freeze by icing detector and judge icing degree.Blade root switch board is according to knot Ice deciding degree heating mode.Deicer carries out being turned on and off corresponding connecting pipe entering according to the instruction of blade root switch board Row heating deicing.
The specific example control flow that performs refers to Fig. 4, shown in 5, and icing detector detection freezes when being frozen for severe, Selection partition heating pattern is heated, and preferably opens hot-air blower, opens a point area auxiliary connection heating zone pipeline 113, The main subregion of heating zone one is heated, when a subregion outlet temperature sensor 112 reaches preferable 50 DEG C, opens a piecewise connection two Subregion pipeline 107, a piecewise connection pair heating zone pipeline 113 is closed, two piecewise connection pair heating zone pipelines 111 are opened, when two When subregion outlet temperature sensor 110 reaches preferable 45 DEG C, two piecewise connection blade tip area pipelines 108 are opened, close two subregions Auxiliary connection heating zone 111.Icing detector detection is frozen, it is known that hot-air blower and all connecting tubes are closed when without ice Road.Partition heating pattern can also be to perform next action again after preset temperature is reached 5 minutes.If blade is in slight Freeze, then close all auxiliary connection heating zones pipeline and open all by stages connecting pipes and open common heating pattern, do not have to Carry out partition heating.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although The present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be right Technical scheme described in previous embodiment is revised, or carries out equivalent substitution to which part technical characteristic.It is all in this hair Bright spiritual and any revision within principle, made, equivalent substitution, improvement etc., should be included in protection scope of the present invention It is interior.

Claims (8)

  1. A kind of 1. wind power generating set blade de-icing method of partition type hot-air blower heating, it is characterised in that：Described deicing Method comprises the following steps：
    A) detect whether to freeze by icing detector and judge icing degree；
    B) blade root switch board includes common heating pattern and subregion according to icing deciding degree heating mode, described heating mode Heating mode, common heating pattern refer to close all piecewise connection pair heating zone pipelines and open connecting tube between each subregion Road；Partition heating pattern is corresponding pipeline to be controlled up to setting crucial ice field to divide by blade root switch board Block quickly heats the pattern of deicing；
    C) deicer carries out being turned on and off corresponding connecting pipe carrying out heating deicing according to the instruction of blade root switch board.
  2. 2. the wind power generating set blade de-icing method of partition type hot-air blower heating as claimed in claim 1, its feature exist In：In the step a, described icing degree includes slight freeze and frozen with severe.Distinguish the node that slight or severe freezes The parameter of icing detector is configured and changed according to actual conditions.
  3. What 3. a kind of wind power generating set blade de-icing method of partition type hot-air blower heating as claimed in claim 1 was realized System, it is characterised in that：The system includes icing detector, blade root switch board and deicer, described icing detector The afterbody above cabin；Described blade root switch board is installed at blade root；Described deicer includes blade root heating dress Put, main heating zone, secondary heating zone and connecting pipe, described blade root heater includes heater, air blower, connection heating zone Connecting pipe；Described main heating zone is main heating region, positioned at the region of blade inlet edge, the subregion of the main heating zone Spatially uniformly divided；Described secondary heating zone is located at trailing edge, close to leaf root part there is reflux line to carry out circulation and adds Heat.
  4. 4. system as claimed in claim 3, it is characterised in that：Described blade root heater is additionally included in blade leading edge with before The baffle plate that certain position is set at web, described connecting pipe connection heating system and main heating zone.
  5. 5. the system as described in claim 3 or 4, it is characterised in that：Described each subregion is connected by pipeline, and each subregion passes through Pipeline is connected with secondary heating zone.
  6. 6. system as claimed in claim 5, it is characterised in that：Turbulent baffle is installed in the subregion.
  7. 7. the system as described in claim 3 or 4, it is characterised in that：Described reflux line is into the oblique circular cylinder bodily form by blade root Gradually taper up connecting pipe and be connected on hot-air blower entrance.
  8. 8. the system as described in claim 3 or 4, it is characterised in that：Described temperature sensor is distributed in heater tube and said Mouth, main heating zone subregion 1, subregion 2 ... subregion n, blade tip, secondary heating zone reflux line porch.
CN201711160512.4A 2017-11-20 2017-11-20 Partition type hot air blower heating wind generating set blade deicing method and system Active CN107829888B (en)

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CN113819014A (en) * 2021-10-19 2021-12-21 中国华能集团清洁能源技术研究院有限公司 Blade deicing system with optimized deicing flow channel and flow channel design method thereof
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CN108730133A (en) * 2018-06-08 2018-11-02 株洲时代新材料科技股份有限公司 Wind power generation unit blade integrally anti-icing method and product
CN113819014A (en) * 2021-10-19 2021-12-21 中国华能集团清洁能源技术研究院有限公司 Blade deicing system with optimized deicing flow channel and flow channel design method thereof
CN114526205A (en) * 2022-03-04 2022-05-24 湖南风创能源科技有限公司 Deicing controller and control method thereof

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