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Turbine structure using electromagnetic bearing

An electromagnetic bearing and turbine technology, applied in the direction of magnetic bearings, bearings, bearing components, etc., can solve the problems of limited application and low temperature tolerance, and achieve the effect of solving high operating temperature, improving working temperature and simple structure design.

Active Publication Date: 2021-01-12
DONGFANG TURBINE CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the inventors of the present application have found in practice that the application of electromagnetic bearings in turbine equipment has the following technical problems: the electromagnetic bearing itself has a service temperature limit, and the electromagnetic bearing with high insulation level requirements generally has a lower temperature tolerance, which greatly limits The application of electromagnetic bearing technology to high temperature turbine equipment with high insulation level requirements

Method used

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Embodiment 1

[0033] Embodiment one is basically as Figure 1 to Figure 3As shown: this embodiment provides a turbine structure using electromagnetic bearings, which can make high-temperature turbine equipment use electromagnetic bearing technology better, and can effectively ensure the safe and stable operation of electromagnetic bearings for high-temperature turbine equipment; the turbine The structure includes the turbine rotor I1, the turbine rotor II2 and the bearing box 4 located outside the turbine rotor II2, as well as the bearing rotor 6 and the bearing stator 5. The bearing box 4 is one of the stationary parts of the turbine structure, and the turbine rotor I1 It is fixedly connected with the turbine rotor II2; the bearing rotor 6 is set on the turbine rotor II2, and the inner circle of the bearing rotor 6 is in interference fit with the outer circle of the turbine rotor II2, and the bearing stator 5 is fixed on the inner chamber of the bearing box 4 The inner circle corresponds t...

Embodiment 2

[0047] Embodiment two is basically the same as embodiment one, and its difference is: as figure 1 and figure 2 As shown, this embodiment provides a turbine structure using electromagnetic bearings. On the basis of Embodiment 1, the cooling structure provided by this embodiment also includes a water-cooled structure for the magnetic bearing stator 5; specifically, the water-cooled structure for the magnetic bearing stator 5 It includes an annular cooling chamber 10 arranged on the housing of the bearing housing 4, and the annular cooling chamber 10 is equipped with a cooling water inlet 12 and a cooling water outlet 7, so that cooling water can enter the annular cooling chamber 10 from the cooling water inlet 12, and After heat exchange, the bearing box 4 flows out through the cooling water outlet 7 to cool the bearing and the bearing stator 5; with the above-mentioned structure, the bearing box 4 is provided with an annular cooling chamber 10, which can fully absorb the heat ...

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Abstract

The invention discloses a turbine structure using an electromagnetic bearing, and relates to the technical field of new energy power generation. The turbine structure comprises a turbine rotor I, a turbine rotor II, a bearing rotor, a bearing stator, a bearing box and a cooling structure; the turbine rotor I is fixedly connected with the turbine rotor II; the inner circle of the bearing rotor is in interference fit with the outer circle of the turbine rotor II; the bearing stator is fixed inside the bearing box; the bearing rotor is suspended by an electromagnetic force provided by the bearingstator; a cooling structure comprises a cooling gas inlet and a cooling gas collecting port which are formed on the bearing box, so that cooling gas can enter a chamber of the bearing box from the cooling gas inlet, passes through gaps among the bearing box, the bearing stator and the bearing rotor, and flows out of the cooling gas collecting port after exchanging heat with the bearing stator andthe bearing rotor; and by implementing the technical scheme, the invention aims to solve the technical problem of a high use temperature when the electromagnetic bearing is applied to high-temperature turbine equipment, and safe and stable operation of the electromagnetic bearing for the high-temperature turbine equipment can be effectively ensured.

Description

technical field [0001] The invention relates to the technical field of new energy power generation, in particular to a turbine structure using an electromagnetic bearing. Background technique [0002] Electromagnetic bearings are different from traditional sliding bearings or rolling bearings. They rely on the magnetic field force generated by an additional electromagnetic coil to suspend the rotor, thus realizing real non-contact, which also makes it have low vibration, low noise, no need for lubrication and high performance. Multiple advantages such as low consumption. [0003] At present, electromagnetic bearings have moved from scientific research to industrialization and commercialization, and their industrial applications include compressors, blowers, flywheels, turbines, etc. In recent years, as more and more turbomachines start to adopt electromagnetic bearing support technology, people's research on the application of electromagnetic bearings to turbo equipment is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/04F16C37/00
CPCF16C32/0408F16C37/005
Inventor 倪剑侯明军钱勇孙奇田瑞青苏正
Owner DONGFANG TURBINE CO LTD
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