Mixed magnetic floating load bearing system for hydro-turbo generator set rotary part
A technology for generating sets and rotating parts, which is applied in the direction of electrical components, magnetic attraction or thrust holding devices, etc., which can solve the problems of rising production costs and operation and maintenance costs
Inactive Publication Date: 2011-01-26
HOHAI UNIV
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[0013] control attached figure 1 Its structure is that permanent magnetic maglev device and electric excitation magnetic levitation device are set on the main shaft 1 between the generator and the water turbine of the hydroelectric generator set, and the electric excitation maglev device includes electromagnet core 2, electromagnet excitation winding 3 and The armature 4, wherein the armature 4 is fixedly connected with the main shaft 1, and rotates together with the main shaft, the electromagnet core 2 is fixedly connected with the static geotechnical construction or the fixed support 7, and the excitation winding 3 is placed in the cavity of the electromagnet core 2; The permanent magnetic levitation part includes a dynamic permanent magnet 5 and a static permanent magnet 6, wherein the dynamic permanent magnet 5 is fixedly connected with the main shaft 1 and rotates together with the main shaft, and the static permanent magnet 6 is fixedly connected with a stationary geotech...
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The present invention relates to a mixed magnetic maglev bearing system of the rotating part of a hydraulic turbine generator unit. In the bearing system, a main shaft is provided with a permanent-magnet magnetic maglev device and an electrical-excitation magnetic maglev device. The electrical-excitation magnetic maglev comprises an electromagnet core, an electromagnet excitation winding and an armature; the armature is fixedly connected with the main shaft; the electromagnet core is fixedly connected with a static engineering architecture or a fixing frame; the excitation winding is arrangedin the hollow cavity of the electromagnet core. The permanent-magnet magnetic maglev part comprises a mobile permanent magnet and a static permanent magnet; the mobile permanent magnet is fixedly connected with the main shaft; the static permanent magnet is fixedly connected with the static engineering architecture or another fixing frame. The bearing system has the advantages of reducing the force born by the mechanical bearing, reducing the mechanical loss, improving the efficiency of the generator unit, reducing the mechanical deformation, heating and aging, decreasing the incidence rate of mechanical failure, and prolonging the service life. The electromagnetic magnetic maglev force can be regulated to reasonably arrange the weight of the hydraulic turbine generator unit. The combination of the permanent-magnet system and the electric excitation reduces the exciting current, loss and heating of the electric excitation system.
Description
technical field [0001] The invention relates to a hybrid maglev load-bearing system for the rotating part of a hydroelectric generating set. It is the key technology for the load-bearing of the rotor system of the vertical hydro-generator set based on the hybrid magnetic levitation technology of permanent magnet and electric excitation, and belongs to the technical field of electrical control engineering. Background technique [0002] As early as around 100 BC, the prototype of the water turbine appeared in China - the water wheel, which was used to lift irrigation and drive grain processing equipment. Most modern water turbines are installed in hydropower stations to drive generators to generate electricity. After years of development, relatively mature hydropower technology has been formed, and hydropower has played an indispensable role in people's daily life and industrial production. At present, the large and medium-sized hydroelectric generator sets basically adopt t...
Claims
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IPC IPC(8): H02N15/00
Inventor 马宏忠鞠平王斌韩敬东
Owner HOHAI UNIV