Centrifugal compressor welding case and centrifugal compressor

Abstract

The invention discloses a centrifugal compressor welding case and a centrifugal compressor, and relates to the technical field of compressors. The main purpose is to improve the anticorrosion effect of the welding case and lower the manufacturing cost. According to the main technical scheme, the centrifugal compressor welding case comprises a case body and a lining plate, the case body is internally provided with a supporting ring, a flow guiding plate and a flow dividing plate; the supporting ring, the flow guiding plate and the flow dividing plate are all stainless steel forgings, and the case body is a low-alloy steel body; and the lining plate comprises a plurality of plate blocks, each plate block is a stainless steel plate block, the multiple plate blocks comprise a plurality of planar plate block bodies and a plurality of curved plate block bodies, the multiple plate blocks are welded and connected to the corresponding positions of the inner surfaces of the case body in a matched mode correspondingly, and every two adjacent plate blocks are in gap welded connection and are in smooth transition. The centrifugal compressor welding case and the centrifugal compressor are mainlyused for improving the anticorrosion effect of the welding case.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a welded casing of a centrifugal compressor and the centrifugal compressor. Background technique [0002] In the field of centrifugal compressor production and manufacturing, the product types of corrosive gas media such as ethylene glycol and esterified circulating hydrogen have successively increased, which has higher and higher requirements for the anti-corrosion manufacturing of the welded casing of centrifugal compressors. [0003] At present, in order to ensure the anti-corrosion performance of the welded casing of the centrifugal compressor, the compressor casing is usually adopted as an integral casting structure. However, this kind of integral casting casing is prone to casting blisters and casting cracks during processing and hydraulic testing. Internal defects have poor anti-corrosion effect, and these internal defects must be repaired in time, the repair cycle is ...

AI Technical Summary

Problems solved by technology

[0003] At present, in order to ensure the anti-corrosion performance of the welded casing of the centrifugal compressor, the compressor casing is usually adopted as an integral casting structure. However, this kind of integral casting casing is prone to casting blisters and casting cracks during processing and hydraulic testing. Internal defects, poor anti-corrosion effect, and these internal defects must be repaired in time, the repair cycle is longer, and the manufacturing cost is higher

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