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Magnetic eddy-current type kinetic energy-to-heat energy heat storing device

A heat storage device, magnetic eddy current technology, applied in the direction of engine, wind power generation, wind turbine, etc., can solve the problems of wind energy waste, wind speed lag, impact and so on

Inactive Publication Date: 2013-01-02
ZHENJIANG BOLIN PHOTOELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the wind speed of the traditional wind turbine changes, the generator speed will be unstable, causing the grid-connected input voltage to be unstable, which will have an impact on the power grid. The windward side of the blade will be parallel to the wind direction, which will cause a waste of wind energy, and the adjustment of the windward angle of the blade is realized through the transmission of the reduction mechanism, and the reduction mechanism has an obvious response in the process of transmitting the speed of changing the windward angle of the blade wind speed hysteresis

Method used

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  • Magnetic eddy-current type kinetic energy-to-heat energy heat storing device

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Embodiment 1

[0021] Such as figure 1 As shown, the magnetic eddy current type kinetic energy-to-heat heat storage device of the present invention includes a rotor 2 connected to the wind-driven blade shaft 9 and a stator 1 sleeved outside the rotor. The blades 3 are installed on the blade shaft 9 and can be placed outside Under the action of the driving force, the rotor 2 is driven to rotate. One end of the blade shaft 9 is equipped with a cooling device 10 for cooling the rotor 2; the stator 1 is covered with a layer of thermal insulation material 11; the rotor 2 is provided with an excitation coil, and there is a control The device 12 can control the magnetic field that the rotor acts on the stator; the stator 1 is provided with a heating element made of a ferromagnetic material that can induce changes in the magnetic field and generate eddy currents, and a heat storage space that can be filled with a heat exchange medium is provided in the stator 1, The heat storage space is connected t...

Embodiment 2

[0023] Such as figure 2 As shown, in this embodiment, the magnetic eddy current type kinetic energy-to-heat heat storage device of the present invention includes a rotor 2 connected to the wind-driven blade shaft 9 and a stator 1 sleeved outside the rotor, and the blades 3 are installed on the blade shaft. 9 and can drive the rotor 2 to rotate under the action of an external driving force. A cooling device 10 for cooling the rotor 2 is installed at one end of the blade shaft 9; the stator 1 is coated with an insulating material layer 11 on the periphery; The coil has a control device 12 that can control the magnetic field that the rotor acts on the stator; the stator 1 is provided with a heating element made of a ferromagnetic material that can induce changes in the magnetic field and generate eddy currents, and at the same time, a heat exchange medium can be filled in the stator 1 The heat storage space is connected to the external circulation heat exchange system through th...

Embodiment 3

[0025] Such as image 3 As shown, in this embodiment, the magnetic eddy current type kinetic energy-to-heat heat storage device of the present invention includes a rotor 2 connected to the wind-driven blade shaft 9 and a stator 1 sleeved outside the rotor, and the blades 3 are installed on the blade shaft. 9 and can drive the rotor 2 to rotate under the action of an external driving force. A cooling device 10 for cooling the rotor 2 is installed at one end of the blade shaft 9; the stator 1 is coated with an insulating material layer 11 on the periphery; The coil has a control device 12 that can control the magnetic field that the rotor acts on the stator; the stator 1 is provided with a heating element made of a ferromagnetic material that can induce changes in the magnetic field and generate eddy currents, and at the same time, a heat exchange medium can be filled in the stator 1 The heat storage space is connected to the external circulation heat exchange system through the...

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Abstract

The invention discloses a magnetic eddy-current type kinetic energy-to-heat-energy heat storing device which comprises a rotor and a stator sleeved outside the rotor, wherein an excitation coil is arranged on the rotor, and a magnetic field of the rotor, acted on the stator, can be controlled through a control device; a heating body which is manufactured by adopting a ferromagnetism material and is capable of sensing the variation of the magnetic field and generating an eddy current is arranged on the stator; and meanwhile, a heat storing space capable of containing a heat transferring medium is arranged in the stator; and the heat storing space is connected with an external circulating heat transferring system through a medium inlet and a medium outlet. With the adoption of such structure, the magnetic eddy-current type kinetic energy-to-heat-energy heat storing device is capable of converting the wind energy into the heat for storage and use; the magnetic eddy-current type kinetic energy-to-heat-energy heat storing device is simple in structure, and reliable in running; once the magnetic eddy-current type kinetic energy-to-heat-energy heat storing device is applied to a generating device, a generator can be kept in running at a stable rotating speed, and the stability of the grid-connected input voltage can be ensued, and the impacting to a power grid due to unstable rotating speed of the generator can be avoided; and meanwhile, the residual wind energy which is used for keeping the constant speed of blades in a condition that the wind speed is changed and cannot be used for generating power can be collected, and the kinetic energy is converted into the heat energy, therefore, the utilization efficiency of the energy can be improved.

Description

[0001] technical field [0002] The invention relates to a magnetic eddy current type kinetic energy-to-heat heat storage device. Background technique [0003] When the wind speed of the traditional wind turbine changes, the generator speed will be unstable, causing the grid-connected input voltage to be unstable, which will have an impact on the power grid. The windward side of the blade will be parallel to the wind direction, which will cause a waste of wind energy, and the adjustment of the windward angle of the blade is realized through the transmission of the reduction mechanism, and the reduction mechanism has an obvious response in the process of transmitting the speed of changing the windward angle of the blade Wind speed hysteresis. Contents of the invention [0004] A technical problem to be solved by the present invention is to provide a magnetic eddy current type kinetic energy-to-heat heat storage device capable of converting the kinetic energy of blades driv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D9/02
CPCY02E10/72Y02P70/50
Inventor 夏致俊
Owner ZHENJIANG BOLIN PHOTOELECTRIC TECH
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