A flywheel protection structure and energy storage system
A technology for protecting structure and flywheel, applied in the field of flywheel energy storage, can solve the problems of increased flywheel vibration amplitude, casing friction, shafting damage, etc., and achieve the effects of increasing friction damping, improving stability, and improving safety and reliability.
Active Publication Date: 2022-06-07
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0004] Therefore, the technical problem to be solved by the present invention is to overcome that in the flywheel energy storage system in the prior art, when the flywheel unbalance suddenly increases or the operating conditions change greatly, the vibration amplitude of the flywheel may increase and the shell may Friction occurs, causing shafting instability, and in severe cases may cause shafting damage, thereby providing a flywheel protection structure and energy storage system
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[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must hav...
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The invention relates to the technical field of flywheel energy storage, and provides a flywheel protection structure and an energy storage system. The flywheel protection structure includes a shaft assembly, including a flywheel arranged in a housing and a rotating shaft fixedly connected to the flywheel. The rotating shaft and the flywheel Coaxial arrangement; the end surface of the flywheel is connected with a limit protection end arranged around the rotation shaft, and there is an accommodation space between the limit protection end and the rotation shaft; the fixed seat is arranged around the rotation axis, including a space extending into the accommodation space The support end; the elastic protection structure is located between the support end and the limit protection end, one end is connected to the support end, and the other end rubs against the side of the limit protection end facing the rotating shaft. The flywheel protection structure provided by the present invention, when the unbalance of the flywheel increases suddenly or the operating conditions change greatly, so that the vibration amplitude of the flywheel increases, the limit protection end and the elastic protection structure have flexible collision friction, which avoids the flywheel and the elastic protection structure. The direct friction of the shell will cause the flywheel to be unstable and damaged.
Description
technical field [0001] The invention relates to the technical field of flywheel energy storage, in particular to a flywheel protection structure and an energy storage system. Background technique [0002] The flywheel energy storage system is an energy storage device for electromechanical energy conversion. The system uses physical methods to store energy, and realizes the mutual conversion and storage of electrical energy and the mechanical kinetic energy of the high-speed flywheel through the motor / generator reciprocal bidirectional motor. [0003] The flywheel energy storage system in the prior art mainly includes components such as a flywheel, a bearing, a motor / generator, a power converter, and a housing. During operation, the motor drives the flywheel to rotate in the housing through the bearing. However, if the unbalance of the flywheel increases suddenly or the operating conditions change greatly, the vibration amplitude of the flywheel may increase and friction wit...
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IPC IPC(8): H02K7/02H02K7/10H02K5/24
CPCH02K7/025H02K7/10H02K5/24Y02E60/16
Inventor 戴兴建胡东旭王艺斐陈海生
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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