BOX-IN denoising technique for large-sized converter transformer

Abstract

The invention relates to a new technology for the noise treatment of a large-sized converter transformer by using a firewall and a valve wall at two sides of the converter transformer to carry out closed acoustic treatment to a main body of the transformer. The main body of the transformer is placed in a 'BOX'. In order to provide convenience for examining and repairing equipment, a self supporting sound insulation and absorption compound structure is adopted in both a 'BOX-IN' front board and a 'BOX-IN' top board. As partial sound insulation and absorption boards and steel frames can not be disassembled, all nodes are connected by bolts, thus being assembled and disassembled rapidly. All parts are manufactured by molding, do not require cutting on site and have high processing and reusing rate.

Description

technical field [0001] The invention relates to a method for controlling the noise of a domestic large-scale converter station, in particular to a technology for controlling the noise of a large-scale converter transformer. Background technique [0002] At present, there are mainly two effective noise reduction measures for converter transformer noise in domestic large-scale converter station noise control projects. One is to install a large-scale ventilation and noise reduction device in front of the converter transformer (Beijing Lvchuang patented technology) The other is "BOX-IN" noise reduction technology. [0003] The so-called BOX-IN is to use the firewall on both sides of the converter transformer and the valve hall wall to carry out closed sound insulation treatment on the transformer body, and put the transformer in the "BOX", which is similar to the noise reduction method of installing a sound insulation room and a sound insulation cover. "BOX-IN" was applied for ...

AI Technical Summary

Problems solved by technology

[0004] 1 Sound insulation and sound absorption are independent structures, resulting in complex overall structure, difficult installation, and restricted construction progress;

[0005] 2 Sound insulation rock wool color steel sandwich panel, the strength of the panel will be reduced after cutting on site, and it will be easily damaged during hoisting;

[0006] 3. When the transformer is replaced and overhauled, the reuse rate of the removed sound-insulating rock wool and color steel sandwich panels is low, and basically all of them need to be replaced;

[0007] 4 Due to structural limitations, when the transformer is replaced or overhauled, the "BOX-IN" needs to be completely dismantled, and the workload of disassembly and assembly is heavy, so it is difficult to meet the construction period requirements of the overhaul of the equipment in the station;

[0008] 5 The sound insulation board and the steel frame are connected by self-tapping nails, which are easy to loosen and fall off after long-term use, posing safety hazards

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