CN102434405B - Heat-assistant ultrasonic combined ice-removing device and control method thereof - Google Patents
Heat-assistant ultrasonic combined ice-removing device and control method thereof Download PDFInfo
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- CN102434405B CN102434405B CN2011104441372A CN201110444137A CN102434405B CN 102434405 B CN102434405 B CN 102434405B CN 2011104441372 A CN2011104441372 A CN 2011104441372A CN 201110444137 A CN201110444137 A CN 201110444137A CN 102434405 B CN102434405 B CN 102434405B
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Abstract
The invention discloses a heat-assistant ultrasonic combined ice-removing device and a control method thereof. The heat-assistant ultrasonic combined ice-removing device comprises a wind driven generator blade, an automatic controlling device, an assistant electrical heating device, an ultrasonic high-frequency oscillation device, an outdoor ambient temperature sensor and a blade surface ice layer thickness tester, wherein the assistant electrical heating device comprises an electrical heating power source and an electrical heating band; the ultrasonic high-frequency oscillation device comprises an ultrasonic generator and an ultrasonic energy converter; the automatic controlling device controls the ultrasonic generator to work according to a temperature signal fed back by the outdoor ambient temperature sensor and an ice layer thickness signal fed back by the blade surface ice layer thickness tester, and controls the assistant electrical heating device to work according to the ice layer thickness signal fed back by the blade surface ice layer thickness tester and a continuous working period of the ultrasonic generator. The invention has the capacities of effectively removing the ice layer on the surface of the blade, ensuring safety operation of the wind generating set in winter and increasing operational efficiency of the wind generating set in winter, and is simple and efficient, safe and reliable.
Description
Technical field
The present invention relates to a kind of hot auxiliary ultrasonic associating deicer, be mainly used in the wind power plant anti-icing, the deicing of generator blade and handle, belong to that equipment is anti-icing, the deicing field.
Background technique
Wind-power electricity generation is the principal mode of Wind Power Utilization, yet for the wind power generating set that the wind power generating set of winter operation especially is installed in clammy area, it is one of principal element that influences wind energy conversion system efficient and safety reliability that blade freezes.During a large amount of icing of blade, can have a strong impact on its aerodynamic characteristic, the efficient of wind energy conversion system is reduced, the output power of unit reduces; Also will cause the wind power generating set disorderly closedown during serious icing, influence the safe and stable operation of network system.Yet, also there is not effectively ripe blade deicing technology at present, generally be to adopt the mode deicing of shutting down, had a strong impact on the stability of operation of power networks.Therefore, seek that effective blade is anti-icing, de-icing method has important engineering application value.And ultrasound has mechanical effect as a kind of form of energy when propagating in solid dielectric, can produce high frequency oscillation, and this high frequency oscillation can produce great shear forces at the bonding interface place of different material, makes separating substances.
Summary of the invention
The objective of the invention is the deficiency at existing blade of wind-driven generator deicing technology, a kind of hot auxiliary ultrasonic associating deicer is proposed, this device can be removed the ice sheet of blade surface in real time effectively, simple efficient, safe and reliable, thereby guaranteed the safe operation of wind power generating set in winter, improved the operational efficiency of wind power generating set in winter.
For realizing above technical purpose, the present invention will take following technological scheme:
A kind of hot auxiliary ultrasonic associating deicer comprises blade of wind-driven generator, automatic controller, auxiliary electric heater unit, ultrasound high frequency oscillating apparatus, for detection of the outdoor environment temperature sensor of ambient temperature and for detection of the blade surface ice layer thickness testing instrument of blade of wind-driven generator ice layer thickness; Auxiliary electric heater unit comprises electric heating power supply and the electrical heater plater that is connected with the electric heating power supply, the ultrasound high frequency oscillating apparatus comprises ultrasonic generator and the ultrasonic transducer that is connected with ultrasonic generator by conjunction cable, and ultrasonic transducer and electrical heater plater are fixedly mounted on the internal surface of blade of wind-driven generator alternately; The blade ice layer thickness signal that the temperature signal that automatic controller feeds back according to the outdoor environment temperature sensor and blade surface ice layer thickness testing instrument feed back is controlled the startup/stop of ultrasonic generator automatically, and the continuous working period of the blade ice layer thickness signal that feeds back according to blade surface ice layer thickness testing instrument of automatic controller and ultrasonic generator is controlled the startup/stop of auxiliary electric heater unit automatically.
Described blade surface ice layer thickness testing instrument is ultrasonic thickness gage.
Described ultrasonic transducer and electrical heater plater be rectangular array distribution all.
Described ultrasonic transducer is piezoelectric constant disk transducer; And electrical heater plater is square mica electrical heater plater.
Another technical purpose of the present invention provides a kind of controlling method of above-mentioned hot auxiliary ultrasonic associating deicer, may further comprise the steps: the temperature signal that feed back according to the outdoor environment temperature sensor (1) judges whether to reach freezing temperature, in case reach freezing temperature, start ultrasonic generator automatically; (2) after ultrasonic generator starts, provide ac-excited electric current to ultrasonic transducer, produce high frequency oscillation, blade of wind-driven generator is carried out the deicing operation; (3) after the operating time of ultrasonic generator continued preset time t, judge the size of blade surface ice layer thickness the testing instrument current blade of wind-driven generator ice layer thickness that feeds back and the ice layer thickness lower limit h that presets, if current blade of wind-driven generator ice layer thickness is not higher than ice layer thickness lower limit h, then close ultrasonic generator; If current blade of wind-driven generator ice layer thickness is higher than ice layer thickness lower limit h, then open auxiliary electric heater unit automatically, ultrasonic generator and auxiliary electric heater unit joint work, be not higher than ice layer thickness lower limit h until current blade of wind-driven generator ice layer thickness, close ultrasonic generator, auxiliary electric heater unit.
According to above technological scheme, compared with prior art, the present invention has following advantage:
1, the present invention has effectively remedied the deficiency that existing wind-driven generator is shut down deicing, can carry out effective deicing in real time, need not to shut down.By adding the ultrasound of certain intensity and frequency, produce high frequency oscillation at blade surface, overcome ice sheet in the adhesion strength of blade surface; destroy the ice sheet structure, effectively remove the blade surface ice sheet, can be under non-stop-machine situation; the normal operation that keeps wind-driven generator improves energy utilization rate.
2, the present invention adopts the mode of hot auxiliary ultrasonic deicing, at ultrasound effectively under the situation of deicing, adopt auxiliary electrically heated mode, only need to add few heat, only melt one deck ice crystal at ice sheet and blade bonding interface place, reduce ice sheet in the adhesion strength of blade surface, the while is hyperacoustic mechanism in addition, utilizes hyperacoustic high frequency oscillation to remove ice sheet.Compare with existing hot deicing mode of melting ice sheet fully, only need to consume few heat and just can finish whole ice detachment, energy-efficient.
3, equipment is simple, and is easy to operate, can be to the too much weight of the extra increase of blade.
Description of drawings
Fig. 1 is the hot auxiliary ultrasonic associating of the present invention deicer schematic representation
Fig. 2 is that blade internal surface ultrasonic transducer of the present invention and electrical heater plater are arranged schematic representation;
Fig. 3 is de-icing method control flow chart of the present invention;
Among the figure: 1, ultrasonic generator, 2, conjunction cable, 3, some ultrasonic transducers, 4, the auxiliary electrical heating system, 5, the outdoor environment temperature sensor, 6, blade surface ice layer thickness testing instrument.
Embodiment
Accompanying drawing discloses the structural representation of preferred embodiment involved in the present invention without limitation; Explain technological scheme of the present invention below with reference to accompanying drawing.
As shown in Figure 1 and Figure 2, hot auxiliary ultrasonic associating deicer of the present invention, comprise blade of wind-driven generator, automatic controller, auxiliary electric heater unit, ultrasound high frequency oscillating apparatus, for detection of the outdoor environment temperature sensor of ambient temperature and for detection of the blade surface ice layer thickness testing instrument of blade of wind-driven generator ice layer thickness, wherein: described blade surface ice layer thickness testing instrument is ultrasonic thickness gage; Auxiliary electric heater unit comprises electric heating power supply and the electrical heater plater that is connected with the electric heating power supply, the ultrasound high frequency oscillating apparatus comprises ultrasonic generator and the ultrasonic transducer that is connected with ultrasonic generator by conjunction cable, the quantity of transducer and heater band is arranged according to the size of blade, the power of ultrasonic transducer and heater band all can effectively be regulated according to icing situation, and ultrasonic transducer and electrical heater plater are fixedly mounted on the internal surface of blade of wind-driven generator alternately.Among the present invention, ultrasonic transducer all adopts the mode that is threaded to be anchored on the internal surface of blade with electrical heater plater, and described ultrasonic transducer of while and electrical heater plater be rectangular array distribution all, and ultrasonic transducer is piezoelectric constant disk transducer; Electrical heater plater then is square mica electrical heater plater; The blade ice layer thickness signal that the temperature signal that automatic controller feeds back according to the outdoor environment temperature sensor and blade surface ice layer thickness testing instrument feed back is controlled the startup/stop of ultrasonic generator automatically, and the continuous working period of the blade ice layer thickness signal that feeds back according to blade surface ice layer thickness testing instrument of automatic controller and ultrasonic generator is controlled the startup/stop of auxiliary electric heater unit automatically.
As shown in Figure 3, it discloses a kind of controlling method of above-mentioned hot auxiliary ultrasonic associating deicer, may further comprise the steps: the temperature signal that feed back according to the outdoor environment temperature sensor (1) judges whether to reach freezing temperature, in case reach freezing temperature, starts ultrasonic generator automatically; (2) after ultrasonic generator starts, provide ac-excited electric current to ultrasonic transducer, ultrasonic transducer produces high frequency oscillation, blade of wind-driven generator is carried out the deicing operation; (3) after the operating time of ultrasonic generator continued preset time t, judge the size of blade surface ice layer thickness the testing instrument current blade of wind-driven generator ice layer thickness that feeds back and the ice layer thickness lower limit h that presets, if current blade of wind-driven generator ice layer thickness is not higher than ice layer thickness lower limit h, then close ultrasonic generator; If current blade of wind-driven generator ice layer thickness is higher than ice layer thickness lower limit h, then open auxiliary electric heater unit automatically, be not higher than ice layer thickness lower limit h until current blade of wind-driven generator ice layer thickness, close ultrasonic generator, auxiliary electric heater unit.
Working principle of the present invention is:
At first the ambient temperature signal of gathering according to outdoor environment temperature sensor 5 judges whether to have reached freezing temperature, in case reached freezing temperature, ultrasonic generator 1 is opened automatically, drive ultrasonic transducer 3 work, the high frequency oscillation deicing that the ultrasound that utilizes ultrasonic transducer 3 to send produces is measured ice layer thickness at set time intra vane surface ice layer thickness testing instrument 6, in real time if ice layer thickness is lower than setting value, ultrasonic generator 1 quits work automatically, and ice detachment is finished; If ice layer thickness is higher than setting value, auxiliary electrical heating system 4 is opened automatically, deicing under the synergy of electric heating auxiliary ultrasonic high frequency oscillation, blade surface ice layer thickness testing instrument 6 is measured ice layer thickness in real time simultaneously, when ice layer thickness was lower than setting value, ultrasonic generator 1 and auxiliary electrical heating system 4 quit work automatically.
Therefore, the starting stage of freezing, outdoor environment temperature sensor collecting temperature signal, automatic controller is opened ultrasonic generator in real time automatically according to the temperature signal of feedback, ultrasound transducer array is started working, and produces high frequency oscillation at blade surface, and high frequency oscillation is in the generation great shear forces at the interface of blade surface and ice sheet, can effectively overcome the adhesion strength between ice sheet and the blade surface, thereby make the ice sheet fragmentation come off; If set in the operating time, high frequency oscillation is not enough to overcome fully adhesion strength between ice sheet and the blade surface in the shearing force that produces at the interface of blade surface and ice sheet, ice sheet can't be removed fully, the auxiliary electrical heating system is opened automatically, the electrical heater plater array imposes the small-power heating to blade surface, only need to melt blade surface and ice sheet ice crystal at the interface, make and form water membrane or solid-liquid thickness district at the interface, reduce the adhesion strength between ice sheet and the blade surface, Vltrasonic device continues operation simultaneously, and the significant shear power that hyperacoustic high frequency oscillation produces just can shake ice sheet fall.Under hot auxiliary ultrasonic synergy, finally finish the whole blade ice detachment.In ice detachment, ultrasound transducer array also can be regulated power and operation columns according to icing situation.
Claims (5)
1. a hot auxiliary ultrasonic is united deicer, comprise blade of wind-driven generator, it is characterized in that, also comprise automatic controller, auxiliary electric heater unit, ultrasound high frequency oscillating apparatus, for detection of the outdoor environment temperature sensor of ambient temperature and for detection of the blade surface ice layer thickness testing instrument of blade of wind-driven generator ice layer thickness; Auxiliary electric heater unit comprises electric heating power supply and the electrical heater plater that is connected with the electric heating power supply, the ultrasound high frequency oscillating apparatus comprises ultrasonic generator and the ultrasonic transducer that is connected with ultrasonic generator by conjunction cable, and ultrasonic transducer and electrical heater plater are fixedly mounted on the internal surface of blade of wind-driven generator alternately; The blade ice layer thickness signal that the temperature signal that automatic controller feeds back according to the outdoor environment temperature sensor and blade surface ice layer thickness testing instrument feed back is controlled the startup/stop of ultrasonic generator automatically, and the continuous working period of the blade ice layer thickness signal that feeds back according to blade surface ice layer thickness testing instrument of automatic controller and ultrasonic generator is controlled the startup/stop of auxiliary electric heater unit automatically.
2. according to the described hot auxiliary ultrasonic associating deicer of claim 1, it is characterized in that described blade surface ice layer thickness testing instrument is ultrasonic thickness gage.
3. according to claim 1 or 2 described hot auxiliary ultrasonic associating deicers, it is characterized in that described ultrasonic transducer and electrical heater plater be rectangular array distribution all.
4. according to the described hot auxiliary ultrasonic associating deicer of claim 3, it is characterized in that described ultrasonic transducer is piezoelectric constant disk transducer; And electrical heater plater is square mica electrical heater plater.
5. one kind is used for the controlling method that the described hot auxiliary ultrasonic of claim 1 is united deicer, it is characterized in that, may further comprise the steps: the temperature signal that feed back according to the outdoor environment temperature sensor (1) judges whether to reach freezing temperature, in case reach freezing temperature, start ultrasonic generator automatically; (2) after ultrasonic generator starts, provide ac-excited electric current to ultrasonic transducer, ultrasonic transducer produces high frequency oscillation, blade of wind-driven generator is carried out the deicing operation; (3) after the operating time of ultrasonic generator continued preset time t, judge the size of blade surface ice layer thickness the testing instrument current blade of wind-driven generator ice layer thickness that feeds back and the ice layer thickness lower limit h that presets, if current blade of wind-driven generator ice layer thickness is not higher than ice layer thickness lower limit h, then close ultrasonic generator; If current blade of wind-driven generator ice layer thickness is higher than ice layer thickness lower limit h, then open auxiliary electric heater unit automatically, ultrasonic generator and auxiliary electric heater unit joint work, be not higher than ice layer thickness lower limit h until current blade of wind-driven generator ice layer thickness, close ultrasonic generator, auxiliary electric heater unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104441372A CN102434405B (en) | 2011-12-27 | 2011-12-27 | Heat-assistant ultrasonic combined ice-removing device and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104441372A CN102434405B (en) | 2011-12-27 | 2011-12-27 | Heat-assistant ultrasonic combined ice-removing device and control method thereof |
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| CN102434405A CN102434405A (en) | 2012-05-02 |
| CN102434405B true CN102434405B (en) | 2013-08-07 |
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Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644559A (en) * | 2012-05-15 | 2012-08-22 | 南京风电科技有限公司 | Wind driven generator with de-icing device and de-icing method thereof |
| CN103963979A (en) * | 2013-02-01 | 2014-08-06 | 中国航空工业集团公司西安飞机设计研究所 | Electric pulse and graphite combined deicing method |
| CN103963978A (en) * | 2013-02-01 | 2014-08-06 | 中国航空工业集团公司西安飞机设计研究所 | Combined Ultrasonic and graphite deicing method |
| CN103807109B (en) * | 2014-01-22 | 2017-01-04 | 刘中威 | A kind of aero-generator rotor blade electro-heat deicing wireless control system |
| CN105626370B (en) | 2014-10-30 | 2018-02-16 | 株洲时代新材料科技股份有限公司 | A kind of anti-ice wind electricity blade structure |
| CN106325109B (en) * | 2015-06-19 | 2019-02-26 | 徐工集团工程机械股份有限公司 | Deicing equipment autocontrol method, device and system |
| DE102015225915A1 (en) * | 2015-12-18 | 2017-06-22 | Robert Bosch Gmbh | wiper device |
| CN109944753A (en) * | 2017-12-21 | 2019-06-28 | 天津昊川新能源科技有限公司 | Fan blade surface ice sheet removal device |
| CN108400555B (en) * | 2018-04-19 | 2024-01-16 | 国家电网公司 | Laser deicing system and method |
| US11236733B2 (en) | 2018-09-17 | 2022-02-01 | General Electric Company | Heating system and method for a jointed wind rotor turbine blade |
| CN109733616A (en) * | 2019-02-19 | 2019-05-10 | 哈尔滨工程大学 | A kind of low energy consumption quick detection based on ultrasound and de-icing method |
| CN109899249B (en) * | 2019-03-28 | 2023-04-28 | 安徽驭风风电设备有限公司 | Wind power blade deicing device and method |
| FR3101000B1 (en) * | 2019-09-25 | 2022-07-15 | Lille Ecole Centrale | Process of fusion of a body by means of an ultrasonic wave |
| FR3100999B1 (en) * | 2019-09-25 | 2022-07-15 | Lille Ecole Centrale | Electroacoustic device |
| CN113339211A (en) * | 2021-06-21 | 2021-09-03 | 中能电力科技开发有限公司 | Blade coating and ultrasonic wave combined anti-icing and deicing method |
| CN113530770B (en) * | 2021-09-03 | 2022-09-09 | 贾星 | Ultrasonic wave defroster of wind generating set blade |
| CN117006003A (en) * | 2023-03-29 | 2023-11-07 | 哈尔滨理工大学 | Intelligent ultrasonic deicing method for wind driven generator blade |
| CN116892490B (en) * | 2023-09-08 | 2023-11-28 | 中北大学 | Ultrasonic deicing method, controller, system and medium for wind driven generator blade |
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