Large-scale centrifugal compressor impeller and machining forming method thereof

A centrifugal compressor and impeller technology, applied in metal processing equipment, mechanical equipment, manufacturing tools, etc., can solve the problem that the formed product deviates from the aerodynamic design requirements of the centrifugal compressor, the welding deformation is difficult to completely eliminate, and the surface finish of the die blade is poor, etc. To solve the problem, to achieve the excellent shape of the pneumatic flow channel, to eliminate the polishing weld bump, and to ensure the effect of the shape of the pneumatic flow channel

Inactive Publication Date: 2012-12-12
XECA TURBO TECH (BEIJING) CO LTD
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  • Abstract
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Problems solved by technology

Due to the presence of fillet welds between the blades, the disc and the wheel cover, it is very easy to cause the welding deformation to be completely eliminated, and the welding bumps are not easy to polish. In addition, the surface finish of the die blades is poor, which increases the roughness of the aerodynamic surface. The degree makes the formed product deviate from the aerodynamic design requirements of the centrifugal compressor and reduces the aerodynamic efficiency

Method used

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  • Large-scale centrifugal compressor impeller and machining forming method thereof
  • Large-scale centrifugal compressor impeller and machining forming method thereof
  • Large-scale centrifugal compressor impeller and machining forming method thereof

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Embodiment Construction

[0015] Below, combined with Figure 1-3 , taking a centrifugal impeller for a large centrifugal compressor as an example to illustrate the specific implementation of the present invention.

[0016] The impeller of the large centrifugal compressor described in one embodiment of the present invention is image 3 The shown centrifugal impeller 3 is welded by the disc side part 1 and the wheel cover side part 2 at the height of the half blade. Such as Figure 1-2 As shown, the wheel side part 1 is composed of the overall five-axis milling wheel disc and the wheel cover side half blade height, and the wheel cover side part 2 is composed of the overall five-axis milling wheel cover and the wheel cover side half height blade. Leaf composition.

[0017] Such as image 3 As shown, the forming process of the centrifugal impeller of the large centrifugal compressor described in this embodiment adopts the method of butt-welding the respective milled and shaped blades in the middle of ...

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Abstract

The invention provides a large-scale centrifugal compressor impeller and a machining forming method of the large-scale centrifugal compressor impeller. The large-scale centrifugal compressor impeller comprises an impeller disc side part and an impeller cover side part, wherein the impeller disc side part consists of an impeller disc and an impeller disc side semi-leaf high blade formed by wholly milling, and the impeller cover side part consists of an impeller cover and an impeller cover side semi-leaf high blade formed by wholly milling. The invention has the advantages that the milled blade is higher in precision compared with that of the conventional stamped blade; the welding mode and the welding position can be optimized, the length of a weld joint can be reduced, and the welding deformation quantity and the weld beading polishing treatment can be preferably reduced by adopting a novel welding technology; and the fillet angle of an interface among the blade, the impeller disc and the impeller cover is smoother, so that the aerodynamic performance of the large-scale centrifugal compressor can be preferably improved.

Description

technical field [0001] The invention relates to a process method capable of improving the processing and forming precision of a large centrifugal impeller and the aerodynamic performance of a centrifugal compressor, in particular to a large centrifugal compressor impeller and a processing and forming method thereof. Background technique [0002] Centrifugal compressors are the heart equipment of petrochemical, metallurgical and other process industries. In recent years, the trend of large-scale centrifugal compressors has become increasingly obvious. Taking ethylene plants as an example, in the 1960s and 1970s, the scale of ethylene plants was below 200kt / a. After 2000, it will reach 1000-1400kt / a, and the 2000kt / a ethylene plant will also become a reality in the next few years; in addition, the development of large-scale LNG plants and large-scale air separation plants has promoted the process of large-scale centrifugal compressors. Due to the enlargement of centrifugal com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/28B23P15/00B23C3/00
Inventor 张学锋
Owner XECA TURBO TECH (BEIJING) CO LTD
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