CN109611290B - Hot blast type deicing device for blades of wind generating set - Google Patents
Hot blast type deicing device for blades of wind generating set Download PDFInfo
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- CN109611290B CN109611290B CN201811603949.5A CN201811603949A CN109611290B CN 109611290 B CN109611290 B CN 109611290B CN 201811603949 A CN201811603949 A CN 201811603949A CN 109611290 B CN109611290 B CN 109611290B
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- 239000003365 glass fiber Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 230000001012 protector Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000000523 sample Substances 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- 229920000049 Carbon (fiber) Polymers 0.000 description 5
- 239000011324 bead Substances 0.000 description 5
- 239000004917 carbon fiber Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
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- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
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- 238000005096 rolling process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
- 238000009755 vacuum infusion Methods 0.000 description 1
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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
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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
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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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
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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
- F03D80/60—Cooling or heating of wind motors
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- 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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Abstract
The invention discloses a hot blast type deicing device for a blade of a wind generating set, which comprises a heating device and a ventilating duct arranged in a front edge cavity of the blade, wherein the heating device comprises an air blower and a heater, the output end of the heater is connected with an air pipe, the air outlet end of the air pipe is arranged on a wind shield arranged in the inner cavity of the blade in a penetrating manner, the wind shield divides the inner cavity of the blade into a heating area and a non-heating area, the deicing device also comprises a control cabinet arranged at the root part of the inner cavity of the blade, and the heating device is connected with. The hot blast type deicing device for the blades of the wind generating set can effectively deice the blades of the wind generating set, ensures the operation safety of the wind generating set and improves the generating capacity of the wind generating set, and has high practical value.
Description
Technical Field
The invention relates to the technical field of deicing of blades of wind driven generators, in particular to a hot blast type deicing device for blades of a wind driven generator set.
Background
The green energy sources such as wind energy, solar energy and the like are clean energy sources which are vigorously developed in the world at present, and the wind energy can be developed and utilized on a large scale by the characteristics of huge reserves, wide application range and the like. The development and utilization of wind energy have profound significance for environmental protection and optimization of traditional energy structures. Nowadays, with the continuous expansion of the construction scale of low-wind-speed wind power plants, the blades of wind power plants in YuGuigao plateau areas are mostly affected by freezing. Icing of the blades of the wind turbine generator is an important reason for large-scale wind turbine generator loss of large amount of generated energy in high-humidity and low-temperature areas, the icing of the blades of the wind turbine generator can increase the static load of a fan, reduce the generating efficiency of the generator, and can cause the fan to stop in severe cases; moreover, the dynamic balance of the fan can be changed by freezing the blades, the unbalanced load of the fan is increased, the fan assembly is accelerated to be fatigued, the service life is shortened, and the blades can crack and break and the unit can collapse in severe cases. In addition, when the paddle rotates, ice attached to the paddle may be thrown out, which may cause damage to surrounding people and property. The existing deicing system is designed with temperature detection equipment, the durability of the equipment is poor, the integrity of the supporting structure is poor, the safety of the structural strength is low, and the heating position is fixed. Therefore, a reliable and efficient deicing device for the blades of the wind turbine is urgently needed. The publication date is 2018, 1, 19 and the Chinese patent document with the publication number of CN107605670A discloses a blade deicing system of a wind generating set, wherein a heating source is a carbon fiber heating cable, the heating source is positioned in an inner cavity of the front edge of a blade, the fixing mode of the carbon fiber cable and a shell of the front edge of the blade is a vacuum infusion or wet bag pressing forming process, the carbon fiber heating cable with a certain length is designed according to the temperature required by the deicing of the blade, cable laying is carried out at the position required to be heated of the front edge of the blade according to a certain interval, and two terminals of the carbon fiber heating cable are reserved for being connected with a power line at the later stage; the heating efficiency is high, and the intensification is rapid, safe and reliable, temperature control just can carry out accurate accuse temperature through setting for cable length, has avoided other modes electrical heating accuse temperature to lose efficacy and has caused blade glass steel material damage. According to the method, the carbon fiber heating cable is pre-embedded during the manufacturing of the paddle, and the heating cable is used for heating and deicing, so that the manufacturing difficulty of the paddle is increased, the manufacturing cost of the paddle is increased, and meanwhile, the structural strength of the paddle is easily influenced.
Disclosure of Invention
The invention aims to solve the problems that the power of a wind generating set in the prior art is easy to drop and stop after the surface of a blade is frozen, and the blade is likely to crack, break and collapse, and provides a hot blast type deicing device for the blade of the wind generating set, which can effectively deice the blade of the wind generating set, ensure the operation safety of the wind generating set and improve the generating capacity of the wind generating set.
The invention adopts a specific scheme to solve the technical problems that the blade deicing device of the hot blowing type wind generating set comprises a heating device and a ventilating duct which are arranged in an inner cavity of a blade, wherein the heating device and the ventilating duct are arranged in a front edge cavity of the blade, the heating device comprises an air blower and a heater connected to the outlet end of the air blower, the output end of the heater is connected with an air pipe, the air outlet end of the air pipe penetrates through a wind shield arranged in the inner cavity of the blade, the wind shield divides the inner cavity of the blade into a heating area and a non-heating area, the deicing device further comprises a control cabinet arranged at the root part of the inner cavity of the blade, and the heating device is. The control cabinet is arranged in the blade, and because the blade rotates and can change the pitch during working, the control cabinet needs to bear enough centrifugal force and rotation acceleration in the starting process of the variable pitch, so that the control cabinet is arranged at the root part of the inner cavity of the blade close to the rotation center of the blade; the control cabinet can provide power for the blade deicing device, and the power supply voltage is various voltages such as 690V, 230V, 24V and the like. The control cabinet is internally provided with a special control program and a safety protection logic, and can automatically control the system. The heating device outputs hot air, the hot air is input into a deeper inner cavity of the blade through the air pipe, so that deicing of the blade is realized, and the wind shield is used for isolating a heating area and a non-heating working area. Therefore, the invention solves the problems that the blade surface of the wind generating set in the prior art is easy to cause power reduction and shutdown after being frozen, and the blade is likely to crack, break and collapse, thereby ensuring the operation safety of the wind generating set and improving the generating capacity of the wind generating set.
As preferred, the output of heater passes through the tuber pipe adapter and connects the tuber pipe, is equipped with the corrugated metal pipe between tuber pipe and the tuber pipe adapter, all be equipped with high temperature resistant sealed pad between the input of heater and the air-blower, between the output of heater and the tuber pipe adapter and between tuber pipe adapter and the corrugated metal pipe. The air inlet and the air outlet of the air pipe adapter have different sections, the air pipe adapter is a conversion device for connecting a heater and the air pipe, in addition, in order to ensure that the structure is close to the air pipe on the paddle web plate, the side projection of the whole structure of the air pipe adapter is an inclined trapezoid to provide deviation for connection, and the metal corrugated pipe is cylindrical and can provide longitudinal stretching and transverse deviation. The high-temperature-resistant sealing gasket can seal the joint of the deicing device, and the material temperature resistance of the high-temperature-resistant sealing gasket is not aged after long-term working at the ambient temperature of 100 ℃.
As preferred, the motor of air-blower is installed in the casing both sides of air-blower and is equipped with dampproofing heating band, the tuber pipe on be equipped with a plurality of temperature sensor, temperature sensor has the temperature probe of different length, temperature sensor passes through the temperature sensor base to be fixed on the ventilation pipe, temperature sensor connection switch board. The air blower is a centrifugal air blower and can provide high-pressure and high-flow air outlet, and the air outlet is connected with a flange. The motor of air-blower is installed in the casing both sides of air-blower and is furnished with dampproofing heating band, and the motor has the two bearing structure of casing and support that are equipped with, makes the whole dustproof, waterproof, salt fog prevention function that possesses of motor. The casing is split type structure, can dismantle into two halves, is convenient for install and maintain. The temperature sensor is provided with temperature probes with different lengths, so that the temperature sensor has various detection lengths, can measure the temperature of a pipe center or the temperature of the inner wall of the pipe close to the pipe, and the control cabinet controls the working state of the heating device according to the data of the temperature sensor.
Preferably, the control cabinet is fixed on a control cabinet support, and the control cabinet support is integrally fixed with the inner wall of the paddle through glass fiber cloth. The control cabinet is connected with a special control cabinet bracket and then integrally fixed on the inner wall of the blade in a glass fiber cloth hand pasting mode, so that the control cabinet can bear enough centrifugal force in the working process and the rotating acceleration in the variable-pitch starting process.
As preferred, be equipped with the overtemperature prote ware at heater air intake and/or air outlet, overtemperature prote ware connection switch board, the casing and the connecting piece of heater all adopt nonrust or have the material of anti rust coating, the heater casing be withstand voltage structure, its bearing capacity is greater than the maximum wind pressure of air-blower. The heating power of the heating device is 20kW-35kW, the output power can be controlled through the control cabinet, the power is adjustable, and the safe operation of the heating device can be ensured by adopting the overtemperature protector.
Preferably, a heating device support is arranged in the blade, the heating device support comprises a main support and a motor mounting frame, the main support is of a symmetrical structure, a symmetrical center plane of the main support is intersected with a blade web center plane at the mounting position of the main support, and the motor mounting frame is vertically arranged on the main support; the mounting plane of the motor mounting frame is perpendicular to the direction of centrifugal force generated by the blower motor in the rotating process of the wind turbine generator blades. The main support is symmetrical in structure, so that a symmetrical plane of the main support can be intersected with the center of the section of the blade mounting position after the main support is mounted, the contact joint of the bottom of the main support and the inner wall surface of the blade can be shaped, and the chord direction section deviation of the blade is less than 2%; the motor mounting frame is vertically installed on the support main body, the installation plane of the motor mounting frame is perpendicular to the direction of centrifugal force generated by a blower motor in the rotating process of the blades of the wind turbine generator, and the centrifugal force from the motor to the unfolding direction of the blades can be borne.
Preferably, the edge shape of the wind screen is matched with the cross section shape of the blade at the installation position, the distance between the wind screen and the blade root of the blade is more than one tenth of the total length of the blade, and the air outlet end of the air pipe protrudes out of the wind screen. The distance between the wind shield and the blade root of the blade is larger than one tenth of the total length of the blade, and the air outlet end of the air pipe protrudes out of the wind shield, so that hot air can be sent to the deeper part of the inner cavity of the blade.
Preferably, a telescopic pipe is sleeved in the air pipe, the outer diameter of the telescopic pipe is matched with the inner diameter of the air pipe, a sliding support plate is arranged at the outlet end of the telescopic pipe, a pull rope is fixed on the sliding support plate, a pull rope motor and a pull rope driving wheel are arranged on the wind shield, a reversing pulley is arranged on the inner wall of the paddle far away from the wind shield, the pull rope is wound on the pull rope driving wheel and the pulley, and a telescopic limit switch is further arranged on the inner wall of; the stay cord motor and the telescopic limit switch are both connected with the control cabinet. The telescopic pipe is sleeved in the air pipe, the stay cord is driven by the stay cord motor to adjust the length of the part of the telescopic pipe extending out of the air pipe, the telescopic pipe is pulled out or retracted from the air pipe through the forward and reverse rotation of the stay cord motor, the total length of the air supply pipeline is correspondingly changed, namely the air outlet position of the air supply pipeline in the blade is changed, the sliding support plate is arranged to ensure that a certain distance is reserved between the air outlet of the telescopic pipe and the inner wall of the blade, and to contact the inner wall of the blade in a rolling friction mode, so that the telescopic pipe is smoothly pulled out or retracted; the telescopic limit switch can control the limit position of the telescopic pipe pulled out or retracted from the air pipe, so that key deicing can be performed on the main icing position of the blade, and the deicing process is accelerated.
Preferably, the outlet end of the telescopic pipe is connected with a guide pipe, the guide pipe is an elastic corrugated pipe, a guide plate is fixed on the periphery of the outlet of the guide pipe, four adjusting screws are symmetrically arranged on the guide plate, one end of each adjusting screw is in threaded connection with the guide plate through a nut hinged with the guide plate, the other end of each adjusting screw is connected with an adjusting motor hinged on the sliding support plate, and the adjusting motor is connected with a control cabinet. The guide pipe is arranged at the air outlet end of the telescopic pipe, the outlet of the guide pipe is deflected to a specific direction (for example, deflected to the windward side of the blade) by controlling and adjusting the rotation number and the rotation direction of the motor, and hot air can be aligned to the seriously-frozen part or the local frozen part on the blade to perform deicing, so that the deicing process is accelerated or the deicing process is simplified.
The invention has the beneficial effects that: the hot blast type deicing device for the blades of the wind generating set can effectively deice the blades of the wind generating set, ensure the operation safety of the wind generating set and improve the generating capacity of the wind generating set, and has high practical value.
Drawings
FIG. 1 is a schematic structural diagram of a blade deicing device of a hot blast type wind generating set according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2; (ii) a
FIG. 4 is a schematic view of an installation position of the blade deicing apparatus of the present invention in a blade;
FIG. 5 is a schematic view of a partial structure of the deicing apparatus for blades in accordance with the present invention;
FIG. 6 is a schematic view of a partial structure of the deicing apparatus for blades in accordance with the present invention;
fig. 7 is a schematic view of a structure of a guide plate of the blade deicing device of the present invention.
In the figure: 1. the device comprises a front edge cavity, a blower, a heater, an air pipe, a wind shield, a control cabinet, an air pipe adaptor, a metal corrugated pipe, a high-temperature-resistant sealing gasket, a temperature sensor base, a heating device support, a telescopic pipe, a sliding support plate, a pull rope motor, a pull rope driving wheel, a reversing pulley, a guide pipe, a guide plate, a regulating screw, a regulating motor, a blade and a generating set, wherein the front edge cavity comprises 2 degrees, the blower, 3 degrees, the heater, the air pipe, the wind shield 5 degrees, the control cabinet, the heating device support.
Detailed Description
The following further describes embodiments of the present invention by way of examples, with reference to the accompanying drawings.
Example 1
In the embodiment 1 shown in fig. 1 and fig. 2, a hot blast type deicing device for a blade 23 of a wind generating set 24 comprises a heating device and a ventilation pipeline arranged in an inner cavity of the blade, heating device and air pipe set up in paddle leading edge chamber 1 (see fig. 4, the oblique chain line is paddle web central line in the picture), heating device include air-blower 2 and connect the heater 3 at the air-blower exit end, the output connection tuber pipe 4 of heater, the air-out end of tuber pipe is worn to establish on the deep bead 5 that sets up in the paddle inner chamber (see fig. 3), the marginal shape of deep bead and the paddle cross sectional shape looks adaptation of mounted position department, the distance between deep bead and the paddle blade root is greater than one tenth of paddle total length, the air-out end of tuber pipe is outstanding out the deep bead, the deep bead separates the paddle inner chamber for the zone of heating and the zone of non-. The deicing device further comprises a control cabinet 6 (shown in figure 2) arranged at the root of the inner cavity of the blade, and the heating device is connected with the control cabinet. The control cabinet is fixed on the control cabinet support, and the control cabinet support is integrally fixed with the inner wall of the paddle through glass fiber cloth. The control cabinet is connected with a special control cabinet bracket and then integrally fixed on the inner wall of the blade in a glass fiber cloth hand pasting mode, so that the control cabinet can bear enough centrifugal force in the working process and the rotating acceleration in the variable-pitch starting process. The control cabinet can provide power for the blade deicing device, and the power supply voltage is various voltages such as 690V, 230V, 24V and the like. The control cabinet is internally provided with a special control program and a safety protection logic, and can automatically control the system. The heating device outputs hot air, the hot air is output through the air pipe, the wind shield is used for isolating a heating area from a non-heating working area, the air outlet end of the air pipe protrudes out of the wind shield, the hot air can be located in the deeper position of the inner cavity of the paddle, and therefore the paddle deicing is achieved.
The output end of the heater is connected with the air pipe through an air pipe adapter 7, the cross sections of an air inlet and an air outlet of the air pipe adapter are different in size, the air pipe adapter is a conversion device for connecting the heater and the air pipe, and in order to enable the structure to be close to the air pipe on the paddle web plate, the side projection of the whole structure of the air pipe adapter is trapezoidal, so that the offset is provided for connection; be equipped with metal bellows 8 between tuber pipe and the tuber pipe adapter, metal bellows is cylindric, can provide vertical stretching and horizontal skew, and wherein the rated offset of axial is greater than 100mm, and the rated offset of horizontal is greater than 30 mm. High-temperature-resistant sealing gaskets 9 are arranged between the input end of the heater and the blower, between the output end of the heater and the air pipe adapter and between the air pipe adapter and the metal corrugated pipe; the high-temperature-resistant sealing gasket can seal the joint of the deicing device, so that air leakage in the running process of the device is prevented, pressure in a system is insufficient, and the temperature resistance of the material of the high-temperature-resistant sealing gasket can not be aged after long-term working at the temperature of 100 ℃. In addition, the length of the air pipe can be determined according to the installation space, the air pipe can be laid and installed in a whole section or divided into multiple sections, when a multi-section structure is adopted, the joints of the air pipe are circumferentially wound by adopting the connecting glass fiber cloth, the joints are hermetically connected through a hand pasting process, and the structural strength and the sealing of the joints of the air pipe are ensured.
The motor of air-blower is installed in the casing both sides of air-blower and is equipped with dampproofing heat band, the tuber pipe on be equipped with a plurality of temperature sensor 10, temperature sensor has the temperature probe of different length, temperature sensor passes through temperature sensor base 11 to be fixed on the ventilation pipe, temperature sensor connection control cabinet. The air-blower is centrifugal air-blower, can provide the air-out of high pressure and high flow, and the air outlet is flange joint. The motor of air-blower is installed in the casing both sides of air-blower and is furnished with dampproofing heating band, and the motor has the two bearing structure of support of casing and outfit, and the motor wholly possesses dustproof, waterproof, salt fog prevention function. The casing is split type structure, can dismantle into two halves, is convenient for install and maintain. The temperature sensor is arranged on the air pipe through the temperature sensor base, the detection length of the temperature sensor is various, and the temperature of the pipe center or the temperature of the inner wall of the pipe close to the pipe can be measured.
According to the invention, the overtemperature protectors are respectively arranged at the air inlet and the air outlet of the heater and between the air pipe adapter and the metal corrugated pipe, the overtemperature protectors are connected with the control cabinet, and the overtemperature protectors are adopted to ensure the safe operation of the heating device. The shell and the connecting piece of the heater are made of stainless heat-resistant steel, the shell of the heater is of a pressure-resistant structure, and the pressure-bearing capacity of the shell is larger than the maximum air pressure of the air blower. The heating power of the heating device is 20kW-35kW, the output power can be controlled through the control cabinet, and the power is adjustable.
A heating device support 12 is arranged in the blade, the heating device support comprises a main support and a motor mounting frame, the main support is of a symmetrical structure, the symmetrical center plane of the main support is intersected with the center plane of a blade web plate at the mounting position of the main support, and the motor mounting frame is vertically arranged on the main support (see figure 3); the mounting plane of the motor mounting frame is perpendicular to the direction of centrifugal force generated by the blower motor in the rotating process of the wind turbine generator blades. The main support is symmetrical in structure, a symmetrical plane of the main support can intersect with the center of the section of the mounting position of the blade after the main support is mounted, the bottom of the main support is attached to the inner wall surface of the blade, and the deviation of the chord-direction section of the blade is less than 2%; the motor mounting frame is vertically installed on the support main body, the installation plane of the motor mounting frame is perpendicular to the direction of centrifugal force generated by a blower motor in the rotating process of the blades of the wind turbine generator, and the centrifugal force from the motor to the unfolding direction of the blades can be borne.
Example 2
In embodiment 2 shown in fig. 5, a telescopic pipe 13 is sleeved in an air pipe, the outer diameter of the telescopic pipe is matched with the inner diameter of the air pipe, a sliding support plate 14 is arranged at the outlet end of the telescopic pipe, a pull rope 15 is fixed on the sliding support plate, a pull rope motor 16 and a pull rope driving wheel 17 are arranged on a wind shield, a reversing pulley 18 is arranged on the inner wall of a paddle far away from the wind shield, the pull rope is wound on the pull rope driving wheel and the pulley, and a telescopic limit switch is also arranged on the inner wall of; the stay cord motor and the telescopic limit switch are both connected with the control cabinet. The telescopic pipe is sleeved in the air pipe, the stay cord is driven by the stay cord motor to adjust the length of the part of the telescopic pipe extending out of the air pipe, the telescopic pipe is pulled out or retracted from the air pipe through the forward and reverse rotation of the stay cord motor, the total length of the air supply pipeline is correspondingly changed, namely the air outlet position of the air supply pipeline in the blade is changed, the sliding support plate is arranged to ensure that a certain distance is reserved between the air outlet of the telescopic pipe and the inner wall of the blade, and to contact the inner wall of the blade in a rolling friction mode, so that the telescopic pipe is smoothly pulled out or retracted; the telescopic limit switch can control the limit position of the telescopic pipe which is pulled out or retracted from the air pipe, and the rest is the same as the embodiment 1.
Example 3
In embodiment 3 shown in fig. 6, the outlet end of the telescopic tube is connected with a guide tube 19, the guide tube is an elastic corrugated tube, a guide plate 20 (see fig. 7) is fixed on the periphery of the outlet of the guide tube, four adjusting screws 21 are symmetrically arranged on the guide plate by taking the axis of the telescopic tube as the center, one end of each adjusting screw is in threaded connection with the guide plate through a nut hinged with the guide plate, the other end of each adjusting screw is connected with an adjusting motor 22 hinged on the sliding support plate, and the adjusting motors are connected with a control cabinet. The guide pipe is arranged at the air outlet end of the extension pipe, the outlet of the guide pipe is deflected to a specific direction (for example, deflected to the windward side of the blade) by controlling and adjusting the rotation number and the rotation direction of the motor, so that hot air can be aligned to the seriously iced part or the local iced part of the blade to deice, and the rest is the same as that of the embodiment 2.
In addition to the above embodiments, the technical features or technical data of the present invention may be reselected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.
Claims (8)
1. The utility model provides a wind generating set paddle defroster of hot blast formula, is including setting up heating device and the air pipe in the paddle inner chamber, its characterized in that: the heating device and the ventilation pipeline are arranged in the blade front edge cavity (1), the heating device comprises an air blower (2) and a heater (3) connected to the outlet end of the air blower, the output end of the heater is connected with an air pipe (4), the air outlet end of the air pipe penetrates through a wind shield (5) arranged in the blade inner cavity, the wind shield divides the blade inner cavity into a heating area and a non-heating area, the deicing device further comprises a control cabinet (6) arranged at the root part of the blade inner cavity, and the heating device is connected with the control cabinet; the wind pipe is internally connected with a telescopic pipe (13), the outer diameter of the telescopic pipe is matched with the inner diameter of the wind pipe, the outlet end of the telescopic pipe is provided with a sliding support plate (14), a pull rope (15) is fixed on the sliding support plate, a pull rope motor (16) and a pull rope driving wheel (17) are arranged on the wind shield, the inner wall of the paddle far away from the wind shield is provided with a reversing pulley (18), the pull rope is wound on the pull rope driving wheel and the pulley, and the inner wall of the paddle is also; the pull rope motor and the telescopic limit switch are both connected with the control cabinet; the telescopic pipe is characterized in that the outlet end of the telescopic pipe is connected with a guide pipe (19), the guide pipe is an elastic corrugated pipe, a guide plate (20) is fixed on the periphery of the outlet of the guide pipe, four adjusting screw rods (21) are symmetrically arranged on the guide plate, one end of each adjusting screw rod is in threaded connection with the guide plate through a nut hinged with the guide plate, the other end of each adjusting screw rod is connected with an adjusting motor (22) hinged on the sliding support plate, and the adjusting motor is connected with a control cabinet.
2. The blade deicing device of a hot blast type wind generating set according to claim 1, wherein the output end of the heater is connected with an air pipe through an air pipe adapter (7), a metal corrugated pipe (8) is arranged between the air pipe and the air pipe adapter, and high temperature-resistant sealing gaskets (9) are arranged between the input end of the heater and the air blower, between the output end of the heater and the air pipe adapter, and between the air pipe adapter and the metal corrugated pipe.
3. The blade deicing device of the hot blast type wind generating set according to claim 1, wherein the motor of the blower is installed on two sides of the casing of the blower and is provided with a damp-proof heating belt, the air duct is provided with a plurality of temperature sensors (10) having temperature probes with different lengths, the temperature sensors are fixed on the air duct through temperature sensor bases (11), and the temperature sensors are connected with the control cabinet.
4. The device for deicing blades of a hot blast type wind generating set according to claim 1, wherein the control cabinet is fixed on a control cabinet bracket, and the control cabinet bracket is integrally fixed with the inner wall of the blade through glass fiber cloth.
5. The blade deicing device of the hot blast type wind generating set according to claim 1, wherein an over-temperature protector is equipped at the air inlet and/or the air outlet of the heater, the over-temperature protector is connected with the control cabinet, the shell and the connecting piece of the heater are made of stainless or rustproof coating materials, the shell of the heater is of a pressure-resistant structure, and the pressure-bearing capacity of the shell is greater than the maximum air pressure of the air blower.
6. The deicing device of the blade of the hot blast type wind generating set according to claim 1, wherein a heating device support (12) is arranged in the blade, the heating device support comprises a main support and a motor mounting bracket, the main support is of a symmetrical structure, a symmetrical center plane of the main support intersects with a center plane of a web plate of the blade at the main support mounting position, and the motor mounting bracket is vertically arranged on the main support.
7. The device according to claim 6, wherein the mounting plane of the motor mounting bracket is perpendicular to the centrifugal force generated by the blower motor during the rotation of the wind turbine blade.
8. The device for deicing the blade of the hot blast type wind generating set according to claim 1, wherein the edge shape of the wind screen is matched with the cross-sectional shape of the blade at the installation position of the wind screen, the distance between the wind screen and the blade root of the blade is more than one tenth of the total length of the blade, and the air outlet end of the air pipe protrudes out of the wind screen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811603949.5A CN109611290B (en) | 2018-12-26 | 2018-12-26 | Hot blast type deicing device for blades of wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811603949.5A CN109611290B (en) | 2018-12-26 | 2018-12-26 | Hot blast type deicing device for blades of wind generating set |
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| CN109611290A CN109611290A (en) | 2019-04-12 |
| CN109611290B true CN109611290B (en) | 2020-07-28 |
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| CN201811603949.5A Active CN109611290B (en) | 2018-12-26 | 2018-12-26 | Hot blast type deicing device for blades of wind generating set |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188741A (en) * | 2019-12-09 | 2020-05-22 | 苏州思曼特自动化科技有限公司 | Blade deicing heater |
| CN111237139A (en) * | 2019-12-09 | 2020-06-05 | 苏州思曼特自动化科技有限公司 | Blade deicing system and method |
| CN111749857B (en) * | 2020-07-07 | 2023-08-15 | 湖南拓天节能控制技术股份有限公司 | Blade air-heat deicing system and installation method thereof |
| EP4019767B1 (en) * | 2020-12-23 | 2026-02-11 | FabricAir Canada Inc. | Wind turbine ice protection system |
| CN112539144B (en) * | 2020-12-25 | 2022-05-13 | 大连理工江苏研究院有限公司 | Intelligent anti-freezing wind power generation device |
| CN113153624B (en) * | 2021-05-23 | 2024-06-21 | 中广核新能源六安有限公司 | Vibration anti-icing wind driven generator blade |
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