CN218934631U - Blade deicing device, impeller assembly and wind generating set - Google Patents
Blade deicing device, impeller assembly and wind generating set Download PDFInfo
- Publication number
- CN218934631U CN218934631U CN202223532152.5U CN202223532152U CN218934631U CN 218934631 U CN218934631 U CN 218934631U CN 202223532152 U CN202223532152 U CN 202223532152U CN 218934631 U CN218934631 U CN 218934631U
- Authority
- CN
- China
- Prior art keywords
- blade
- heating
- detection unit
- temperature
- force
- 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
Links
Images
Classifications
-
- 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
Landscapes
- Wind Motors (AREA)
Abstract
The utility model relates to the field of wind power, and provides a blade deicing device, an impeller assembly and a wind power generator set. When the blade freezes, the weight of the blade increases, and the force between the blade and the hub increases. When a load detection unit detects that the acting force between the corresponding blade and the hub is larger than a preset force value, the control unit controls the heating unit in the corresponding blade to heat and deice the blade. When the blade is not frozen or the deicing of the frozen blade is completed, the control unit controls the heating units in the corresponding blade to stop heating the blade. The blade deicing device provided by the utility model only heats the frozen blades, and the heating unit is turned off in time after deicing is completed, so that the situation of transitional heating of the blades which are not frozen or are deicing completed is prevented.
Description
Technical Field
The utility model relates to the technical field of wind power, in particular to a blade deicing device, an impeller assembly and a wind generating set.
Background
In view of the negative influence of fossil fuel consumption on ecological environment, renewable energy is paid attention to in recent years, wind energy is one of renewable energy sources, wind power generation becomes the dominant force of new energy power generation in China, and wind power generation sets are increasingly favored due to short construction period and high power generation efficiency.
However, some areas (e.g., mountain tops, plateaus, cold areas, etc.) have excellent wind resources, but these areas are prone to ice formation because of low air temperature and high humidity in winter. The blade icing can cause the pneumatic performance of wind turbine blade to be poor, blade overload and blade load uneven distribution scheduling problem, and then lead to wind turbine blade's wind-capturing ability to descend, and then influence the generated energy to blade overload and blade load uneven distribution also can shorten the life of part. In addition, in the rotation process of the blades, when the adhesive force of the ice layer is reduced, the ice blocks are easy to fall off, so that operation accidents are easy to cause.
At present, the purpose of deicing is mainly achieved by heating the blades, when the blades of the wind generating set are frozen, the heating deicing device is started to heat the blades, however, only individual blades are frozen under certain conditions, or the individual blades finish deicing operation in advance in the heating process, however, at this moment, the deicing device continuously heats the non-frozen blades, and the non-frozen blades can be accelerated in aging due to transitional heating, so that the service life of the wind generating set is reduced as a whole.
Disclosure of Invention
The utility model provides a blade deicing device, an impeller assembly and a wind generating set, which are used for solving the defect that in the prior art, the deicing device is started to heat all blades only when the blades are frozen, and realizing the effect of heating only the frozen blades.
The utility model provides a blade deicing device which comprises a control unit, a load detection unit and a heating unit, wherein the load detection unit and the heating unit are arranged on each of n blades included in a wind generating set, the load detection unit and the heating unit are electrically connected with the control unit, and when the load detection unit detects that the acting force between the corresponding blade and a hub is greater than a preset force value, the control unit controls the heating unit in the corresponding blade to start heating the blade.
According to the blade deicing device provided by the utility model, the control unit comprises a first comparison circuit, the first input end of the first comparison circuit is connected with the load detection unit and is used for comparing with the force preset value, and when the force value received by the first input end is larger than the force preset value, the first output end of the first comparison circuit outputs a high level to the heating unit, and the heating unit starts heating.
According to the blade deicing device provided by the utility model, each blade is further provided with a temperature detection unit;
when the temperature detection unit detects that the temperature value of the corresponding blade is lower than a temperature preset value, and when the load detection unit detects that the acting force between the corresponding blade and the hub is greater than the force preset value, the control unit controls the heating unit in the corresponding blade to start heating the blade;
when the temperature detection unit detects that the temperature value of the corresponding blade is higher than the temperature preset value, or when the load detection unit detects that the acting force between the corresponding blade and the hub is smaller than the force preset value, the control unit controls the heating unit in the corresponding blade to stop heating the blade.
According to the utility model, the blade deicing device provided by the utility model, the control unit comprises:
the second input end of the second comparison circuit is connected with the load detection unit and is used for comparing with the force preset value, and when the force value received by the second input end is larger than the force preset value, the second output end of the second comparison circuit outputs high level;
the third input end of the third comparison circuit is connected with the temperature detection unit, and when the temperature value received by the third input end is lower than the temperature preset value, the third output end of the third comparison circuit outputs a high level;
and the two input ends of the AND circuit are respectively connected with the second output end and the third output end, and when the second output end and the third output end output high levels, the fourth output end of the AND circuit outputs high levels to the heating unit, and the heating unit starts heating.
According to the blade deicing device provided by the utility model, the load detection unit comprises a load sensor.
According to the blade deicing device provided by the utility model, the temperature detection unit comprises at least two temperature sensors, and a plurality of temperature sensors are distributed along the length direction of the blade.
According to the blade deicing device provided by the utility model, the heating unit comprises a hot air device.
According to the blade deicing device provided by the utility model, the hot air device comprises the air blower and the heating device, the air blower is arranged in the blade and is positioned close to the root of the blade, the blowing direction of the air blower faces the blade tip of the blade, and the heating device is arranged at the downstream position of the air blower.
The utility model also provides an impeller assembly comprising the blade deicing device.
The utility model also provides a wind generating set comprising the blade deicing device or the impeller assembly.
The utility model provides a blade deicing device, which comprises a control unit, a load detection unit and a heating unit, wherein a wind generating set comprises n blades, the load detection unit and the heating unit are arranged in each blade, and the load detection unit and the heating unit are electrically connected with the control unit. When the blade is iced, the weight of the blade changes, and the acting force between the blade and the hub changes. When a load detection unit detects that the acting force between the corresponding blade and the hub is larger than a preset value, the situation that the blade is frozen is indicated, and at the moment, the control unit controls the heating unit in the corresponding blade to heat and deice the blade. When the blade is not frozen or the deicing of the frozen blade is completed, the control unit controls the heating units in the corresponding blade to stop heating the blade. The blade deicing device provided by the utility model only heats the frozen blades, and the heating unit is turned off in time after deicing is completed, so that the situation of transitional heating of the blades which are not frozen or are deicing completed is prevented.
Further, in the impeller assembly and the wind generating set provided by the utility model, the blade deicing device is arranged, so that the same advantages as described above are achieved.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an installation structure of a blade de-icing assembly provided by the present utility model;
FIG. 2 is a schematic diagram of a control unit provided by the present utility model;
FIG. 3 is a schematic diagram II of a control unit provided by the present utility model;
reference numerals:
100: a control unit; 110: a first comparison circuit; 120: a second comparison circuit; 130: a third comparison circuit; 140: an AND circuit; 200: a load sensor; 310: a hub; 320: a blade; 400: a temperature sensor; 500: a heating unit; 510: a blower; 520: a heater.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The blade de-icing assembly, the impeller assembly and the wind power plant of the utility model are described below in connection with fig. 1 to 3.
In the related art, when the blade 320 of the wind generating set is frozen, the heating deicing device needs to be started to deicing the blade 320, and after the current heating deicing device is started, all the blades 320 are heated at the same time, and only when all the blades 320 are completely deicing, the heating of the blades 320 is stopped. However, in the actual use process, there may be a situation that the individual blades 320 do not ice or the iced blades 320 are iced, but since some of the blades 320 still have iced, the heating deicing device continuously heats all the blades 320 until all the ice is removed, so that a situation that the blades 320 that do not ice or have iced are heated excessively may occur.
Therefore, in order to solve the above-mentioned technical problem, in an embodiment of the present utility model, a blade deicing device is provided for deicing blades 320 of a wind turbine generator system, the blade deicing device includes a control unit 100, a load detection unit and a heating unit 500, when the wind turbine generator system includes n blades 320, the load detection unit and the heating unit 500 include n groups, respectively, and a group of load detection units and heating units 500 are correspondingly disposed in each blade 320, and each group of load detection units and heating units 500 are electrically connected with the control unit 100.
In the working process, when the blade 320 is frozen, the weight of the blade 320 is increased, so that the acting force between the blade 320 and the hub 310 is changed, the load detection unit is used for detecting the acting force value between the blade 320 and the hub 310, the control unit 100 receives the acting force value detected by the load detection unit in real time, and when the acting force between the blade 320 and the hub 310 detected by the load detection unit is greater than the preset force value, the control unit 100 controls the heating unit 500 in the blade 320 corresponding to the load detection unit to heat and deice the blade 320. When the force between the blade 320 and the hub 310 detected by the load detecting unit is less than the force preset value, it indicates that there is no icing condition, and the control unit 100 controls the heating unit 500 to stop heating the blade 320.
According to the blade deicing device provided by the utility model, only the blade 320 with the force value larger than the force preset value detected by the load detection unit is heated, the blade 320 which is not frozen or the blade 320 which is deicing completed is not heated, and the condition of transitional heating of the blade 320 is prevented.
Further, the control unit 100 may include n first comparing circuits 110, where the n first comparing circuits 110 are connected to the n load detecting units in a one-to-one correspondence, and the n first comparing circuits 110 are connected to the n heating units 500 in a one-to-one correspondence.
Each first comparison circuit 110 includes a first input terminal for connection with a corresponding load detection unit for receiving a force value of the force between the blade 320 and the hub 310 detected by the load detection unit, and a first output terminal. The first comparison circuit 110 is preset with a force preset value, when the first comparison circuit 110 receives the force value, the force value is compared with the force preset value, and when the force value is greater than the force preset value, the first output end of the first comparison circuit 110 outputs a high level to the heating unit 500, and the heating unit 500 starts to heat the blade 320 where the blade is located after receiving the high level signal.
When the force value of the acting force between the blade 320 and the hub 310 detected by the load detecting unit is smaller than the preset value, it indicates that the deicing operation is completed, and at this time, the first output end of the first comparing circuit 110 outputs a low level to the heating unit 500, and the heating unit 500 stops heating after receiving the low level signal.
In a further embodiment, a set of temperature detection units may also be provided within each blade 320 for detecting the temperature values of the blades 320 in real time and transmitting the temperature values to the control unit 100 in real time.
When the temperature detection unit detects that the temperature value of the corresponding blade 320 is lower than the preset temperature value, it indicates that the temperature of the blade 320 is below the freezing point at this time, and the blade has icing conditions, and when the load detection unit detects that the acting force between the corresponding blade 320 and the hub 310 is greater than the preset force value, it indicates that the surface of the blade 320 is iced, and at this time, the control unit 100 controls the heating unit 500 in the corresponding blade 320 to start heating.
If the temperature detection unit detects that the temperature value of the corresponding blade 320 is higher than the preset temperature value, it is indicated that the temperature of the blade 320 is higher than the freezing point and no icing condition is provided, and therefore, even if the force value detected by the load detection unit is higher than the preset value, the force between the blade 320 and the hub 310 is not increased due to icing, which means that the blade 320 is not frozen, and the control unit 100 does not control the heating unit 500 to be turned on or controls the heating unit 500 being heated to stop heating.
If the temperature detection unit detects that the temperature value of the corresponding blade 320 is lower than the preset temperature value, it indicates that the temperature of the blade 320 is below the freezing point and has icing conditions, and the force value detected by the load detection unit is lower than the preset force value, which indicates that the blade 320 does not ice or has ice removed completely even if the current temperature has icing conditions, the control unit 100 does not control the heating unit 500 to be turned on or controls the heating unit 500 being heated to stop heating.
In this embodiment, the control unit 100 includes n second comparing circuits 120, n third comparing circuits 130, and n and circuits 140, where the n second comparing circuits 120 are connected to the n load detecting units, the n heating units 500, and the n temperature detecting units in one-to-one correspondence, and the n and circuits 140 are connected to the n second comparing circuits 120 and the n third comparing circuits 130, respectively.
Each second comparison circuit 120 includes a second input terminal for connection with a corresponding load detection unit for receiving a force value of the force between the blade 320 and the hub 310 detected by the load detection unit, and a second output terminal. A force preset value is preset in the second comparison circuit 120, when the force value is received by the second comparison circuit 120, the force value is compared with the force preset value, and when the force value is greater than the force preset value, the second output end of the second comparison circuit 120 outputs a high level.
Each third comparing circuit 130 includes a third input terminal for connecting with the corresponding temperature detecting unit and a third output terminal for receiving the temperature value of the blade 320 detected by the temperature detecting unit. A temperature preset value is preset in the third comparison circuit 130, when the third comparison circuit 130 receives the temperature value, the temperature value is compared with the temperature preset value, and when the temperature value is lower than the temperature preset value, the third output end of the third comparison circuit 130 outputs a high level.
Each and circuit 140 includes two input terminals respectively connected to the second output terminal of the second comparing circuit 120 and the third output terminal of the third comparing circuit 130, and a fourth output terminal connected to the heating unit 500, and the fourth output terminal of the and circuit 140 outputs a high level to the heating unit 500 only when the second output terminal of the second comparing circuit 120 and the third output terminal of the third comparing circuit 130 output a high level, and the heating unit 500 is turned on to heat and de-ice. When at least any one of the second output terminal of the second comparing circuit 120 and the third output terminal of the third comparing circuit 130 outputs a low level, and the fourth output terminal of the circuit 140 outputs a low level to the heating unit 500, the heating unit 500 does not start or stop heating.
In one embodiment of the present utility model, the load detection unit includes a load sensor 200 disposed between the blade 320 and the hub 310 for detecting and transmitting a force value of the acting force between the blade 320 and the hub 310.
The temperature detecting unit includes a temperature sensor 400 provided at an inner wall of the blade 320 for detecting a temperature of the blade 320.
Further, in order to make the detection result more reliable, at least two temperature sensors 400 may be provided, and when there are two temperature sensors 400, one may be provided at an intermediate position of the blade 320 in the longitudinal direction, and the other may be provided at the tip position of the blade 320. When the number of the temperature sensors 400 is greater than two, more than two temperature sensors 400 are disposed at positions between the two temperature sensors 400 and are uniformly distributed along the length direction of the blade 320.
In use, when the temperature value of any one of the temperature sensors 400 is lower than the preset value, the third output terminal of the third comparison circuit 130 outputs a high level signal.
In one embodiment of the present utility model, the heating unit 500 may be a hot air device, which heats the blades 320 using hot air.
Specifically, the hot air device may include a blower 510 and a heating device, the heating device may be an electrically heated heater 520, the blower 510 may be disposed on an inner side of the blade 320 and located at a position of the blade 320 near the blade root, the blower 510 blows air toward the blade tip, and the heater 520 may be disposed at a downstream position of the blower 510 and may heat air blown by the blower 510.
The present utility model also provides an impeller assembly comprising a blade de-icing assembly as described above, and thus having the same advantages as described above.
The utility model also provides a wind power plant comprising a blade de-icing arrangement as described above or an impeller assembly as described above, thus having the same advantages as described above.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model 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 technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. The utility model provides a blade defroster, its characterized in that includes control unit (100) and sets up in each of n blades (320) that wind generating set included load detection unit and heating unit (500) on blade (320), load detection unit with heating unit (500) all with control unit (100) electricity is connected, and when load detection unit detects that the effort between corresponding blade (320) and wheel hub (310) is greater than the preset value of force, control unit (100) control in the blade (320) that corresponds heating unit (500) begin heating blade (320).
2. Blade de-icing arrangement according to claim 1, characterized in that the control unit (100) comprises a first comparison circuit (11), a first input of the first comparison circuit (11) being connected to the load detection unit and being arranged for comparison with the force preset value, and that a first output of the first comparison circuit (11) outputs a high level to the heating unit (500) when the force value received by the first input is larger than the force preset value, the heating unit (500) starting heating.
3. Blade de-icing arrangement according to claim 1, characterized in that each blade (320) is further provided with a temperature detection unit;
when the temperature detection unit detects that the temperature value of the corresponding blade (320) is lower than a temperature preset value, and when the load detection unit detects that the acting force between the corresponding blade (320) and the hub (310) is greater than the force preset value, the control unit (100) controls the heating unit (500) in the corresponding blade (320) to start heating the blade (320);
the control unit (100) controls the heating unit (500) within the corresponding blade (320) to stop heating the blade (320) when the temperature detection unit detects that the temperature value of the corresponding blade (320) is higher than the temperature preset value, or when the load detection unit detects that the acting force between the corresponding blade (320) and the hub (310) is smaller than the force preset value.
4. A blade de-icing arrangement according to claim 3, characterized in that the control unit (100) comprises:
the second input end of the second comparison circuit (120) is connected with the load detection unit and is used for comparing with the force preset value, and when the force value received by the second input end is larger than the force preset value, the second output end of the second comparison circuit (120) outputs a high level;
a third comparing circuit (130), wherein a third input end of the third comparing circuit (130) is connected with the temperature detecting unit, and when the temperature value received by the third input end is lower than the temperature preset value, a third output end of the third comparing circuit (130) outputs a high level;
and the two input ends of the AND circuit (140) are respectively connected with the second output end and the third output end, and when the second output end and the third output end output high levels, the fourth output end of the AND circuit (140) outputs high levels to the heating unit (500), and the heating unit (500) starts heating.
5. Blade de-icing arrangement according to any of the claims 1-4, characterized in that the load detection unit comprises a load sensor (200).
6. Blade de-icing arrangement according to claim 3 or 4, characterized in that the temperature detection unit comprises at least two temperature sensors (400), and that a plurality of said temperature sensors (400) are distributed along the length of the blade (320) in which they are located.
7. Blade de-icing arrangement according to any of the claims 1-4, characterized in that the heating unit (500) comprises a hot air device.
8. The blade de-icing assembly according to claim 7, characterized in that said hot air device comprises a blower (510) and a heating device, said blower (510) being arranged in said blade (320) in a position close to the root of said blade (320), the blowing direction of said blower (510) being directed towards the tip of said blade (320), said heating device being arranged in a position downstream of said blower (510).
9. An impeller assembly comprising a blade de-icing assembly according to any of claims 1-8.
10. A wind power plant comprising a blade de-icing apparatus according to any of claims 1-8 or an impeller assembly according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223532152.5U CN218934631U (en) | 2022-12-28 | 2022-12-28 | Blade deicing device, impeller assembly and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223532152.5U CN218934631U (en) | 2022-12-28 | 2022-12-28 | Blade deicing device, impeller assembly and wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218934631U true CN218934631U (en) | 2023-04-28 |
Family
ID=86093182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223532152.5U Active CN218934631U (en) | 2022-12-28 | 2022-12-28 | Blade deicing device, impeller assembly and wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218934631U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116857135A (en) * | 2023-08-22 | 2023-10-10 | 上海勘测设计研究院有限公司 | Blade deicing device and deicing process for wind generating set |
-
2022
- 2022-12-28 CN CN202223532152.5U patent/CN218934631U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116857135A (en) * | 2023-08-22 | 2023-10-10 | 上海勘测设计研究院有限公司 | Blade deicing device and deicing process for wind generating set |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105626370B (en) | A kind of anti-ice wind electricity blade structure | |
| CN107829889B (en) | Deicing control method and system for wind generating set | |
| CN218934631U (en) | Blade deicing device, impeller assembly and wind generating set | |
| CN102003353B (en) | Deicing method for blades of large-scale wind driven generator | |
| CN109281807B (en) | Wind power blade deicing system and control method thereof | |
| CN107620681A (en) | Heating control system and method for blade of wind generating set | |
| CN105402090A (en) | High-power wind driven generator blade modular gas heat ice-resistant method and installation method | |
| CN213270125U (en) | Wind turbine self-deicing blade with piezoelectric material and microwave heater combined | |
| CN102878026A (en) | Wind driven generator rotor blade with electrothermal deicing devices | |
| WO2024088095A1 (en) | Wind turbine generator blade anti-icing system | |
| CN105221358A (en) | A kind of induction heating deicer for wind generator set blade | |
| CN105977895A (en) | Ice melting device and method for electric transmission and distribution circuit in winter | |
| CN212583885U (en) | Anti-icing and de-icing device for wind power blade | |
| CN207634252U (en) | Fan blade anti-icing and deicing system | |
| CN205117631U (en) | Take heat radiating means's wind -powered electricity generation erection column | |
| CN106438226B (en) | Circulation electric-heating for blade of wind-driven generator melts anti-icing equipment | |
| CN206625943U (en) | A kind of blade anti-icing and de-icing device for wind-driven generator | |
| CN209704773U (en) | A kind of blade of wind-driven generator is anti-/ deicing device and blade of wind-driven generator | |
| CN203161452U (en) | Novel deicing equipment | |
| CN212296729U (en) | Fan blade defroster | |
| CN107829888B (en) | Partition type hot air blower heating wind generating set blade deicing method and system | |
| CN111963394B (en) | Low-temperature starting control method and device for gas heating system and anti-icing and deicing system | |
| CN110374827B (en) | Anti-icing system and method for wind driven generator blade | |
| CN116123047A (en) | Blade heating deicing device and control method | |
| CN207212600U (en) | A kind of wind generator set blade deicing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |