Trolley for replacing power unit of Switch converter of wind driven generator

Abstract

The invention discloses a trolley for replacing a power unit of a Switch converter of a wind driven generator, and relates to the technical field of generator maintenance tools. The trolley comprises a moment balancing frame, a grid side power unit support, a machine side power unit support, a supporting cart and standard sliding wheels, the moment balancing frame comprises a moment frame, the middle of the moment frame is fixedly connected with a supporting cross rod, and the two sides of one end of the moment frame are fixedly connected with moment supporting rods. The grid side power unit support comprises a grid-side support rod, and first connecting rods are fixedly connected to one end and the middle of the bottom of the grid-side support rod. Through the arrangement of the moment balancing frame, the grid side power unit support, the machine side power unit support, the supporting cart and the standard sliding wheels, the grid side power unit module group and the machine side power unit module group are convenient to disassemble by utilizing the principles of moment balance, lever, rolling friction and the like.

Description

technical field [0001] The invention relates to the technical field of generator maintenance tools, in particular to a cart for replacing power units of Switch converters of wind power generators. Background technique [0002] Switch water-cooled converters are widely used in converter systems in the wind power industry. After the power unit is damaged, it is necessary to replace the grid-side power unit or machine-side power unit of the converter. The grid-side power unit module weighs 225 kg and consists of three single modules. The power unit module group on the machine side weighs 150 kg and consists of two single modules. Currently, there are two ways to replace the power unit module group: one is to split the module group on the fan into individual modules for replacement; the other It is a complete replacement of the power unit module group. [0003] For disassembly and replacement, it is necessary to disassemble the module group from the fan into individual modules ...

AI Technical Summary

Problems solved by technology

[0003] For disassembly and replacement, it is necessary to disassemble the module group from the fan into individual modules for replacement. A single module weighs 75 kg and requires two people to cooperate for assembly and disassembly. Its weight is within the range that the human body can bear, but the way to replace a single module There is a situation that screws and other accessories fall into the inside of the power unit module group during the disassembly process, and it is extremely difficult to take it out after falling in. It is easy to form an internal short circuit and burn the converter and cause personal injury, which increases the difficulty of replacement and safety risks. It is very labor-intensive, which is not conducive to producing good economic benefits. For the overall replacement, there is no special lifting tool during the disassembly process. The replacement of the grid-side power unit module group and the machine-side power unit module group requires the cooperation of multiple people to disassemble and assemble. Due to the heavy weight of the module group and the narrow working space, the staff cannot exert force, and it is very easy to cause bruises and crush injuries due to improper cooperation during the replacement process, which has certain potential safety hazards. Therefore, a wind turbine switch is proposed. Converter Power Unit Replacement Cart

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