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A multi-shaft centrifugal compressor

A technology of centrifugal compressors and rotating shafts, which is applied in the direction of mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of not fully reflecting the characteristics of multi-axis centrifugal compressors, and the functions have not been effectively expanded, so as to save equipment investment , The effect of simplifying the process operation procedures

Active Publication Date: 2020-02-21
SHENYANG SITE MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, this is still an improved multi-stage centrifugal compressor, which does not fully reflect the characteristics of the multi-shaft centrifugal compressor. In addition to adding two heat exchange processes, its functions have not been effectively expanded.

Method used

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  • A multi-shaft centrifugal compressor
  • A multi-shaft centrifugal compressor
  • A multi-shaft centrifugal compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 Multi-shaft centrifugal compressor with semi-open impeller combination

[0025] According to different user requirements, different proposed technical parameters and other factors, this embodiment 1 adopts a multi-shaft centrifugal compressor formed by combining four semi-open impellers. According to the actual situation of the user's site, according to the requirements of the user, the driving form can be selected as a motor or a steam turbine. The transmission bull gear is installed on the drive shaft and connected with the driven gear shaft, and the semi-open gear is installed on the driven shafts on both sides to form a rotating part. Finally, the rotating part and the fixed part are combined to form a complete multi-shaft centrifugal compressor body. The teeth of the transmission gear and the gear shaft adopt helical meshing, and the transmission is stable. The impeller material is KMN, which can meet the strength corresponding to the process paramet...

Embodiment 2

[0026] Embodiment 2 Multi-shaft centrifugal compressor with semi-open impeller and closed impeller combination

[0027] According to different user requirements, different proposed technical parameters and other factors, Embodiment 2 adopts a multi-shaft centrifugal compressor formed by combining two semi-open impellers and two closed impellers. According to the actual situation of the user's site, according to the requirements of the user, the driving form can be selected as a motor or a steam turbine. The transmission bull gear is installed on the drive shaft and connected with the driven gear shaft, and the semi-open gear is installed on the driven shafts on both sides to form a rotating part. Finally, the rotating part and the fixed part are combined to form a complete multi-shaft centrifugal compressor body. The teeth of the transmission gear and the gear shaft adopt helical meshing, and the transmission is stable. The two semi-open impellers are installed on the driven...

Embodiment 3

[0028] Embodiment 3 Multi-shaft centrifugal compressor with closed impeller combination

[0029] According to different user requirements, different proposed technical parameters and other factors, Embodiment 3 adopts a multi-shaft centrifugal compressor formed by combining four closed impellers. According to the actual situation of the user's site, according to the requirements of the user, the driving form can be selected as a motor or a steam turbine. The transmission bull gear is installed on the drive shaft and is connected with the driven gear shaft, and the closed gear is installed on the driven shafts on both sides to form a rotating part. Finally, the rotating part and the fixed part are combined to form a complete multi-shaft centrifugal compressor body. The teeth of the transmission gear and the gear shaft adopt helical meshing, and the transmission is stable. The impeller material is ASTM705, which can meet the strength corresponding to the process parameters.

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Abstract

A multi-shaft centrifugal compressor comprises a box, rotating shafts, impellers, diffusers, volutes, bearings and a sealing assembly. The multi-shaft centrifugal compressor is characterized in that (1) the rotating shafts comprise a driving shaft and one or more driven shafts, the driving shaft is provided with a driving gear, and driven gears meshed with the driving gear are arranged on the driven shafts; (2) each driven shaft drives a group of impellers, and each group of impellers are provided with the diffusers matched with the group of impellers; (3) the gear match ratio between the driving shaft and all the driven shafts and the gear match ratio of the driven gears accord with the molar ratio of all raw materials of the response equation of a chemical reaction adopting the multi-shaft centrifugal compressor; and (4) different types and sizes of impellers are selected according to production technological parameters. One multi-shaft centrifugal compressor can bear the work of multiple traditional single-shaft compressors, and it is not needed to adjust each single-shaft compressor according to the chemical ratio of all the components participating in a chemical reaction; and in this way, the equipment investment is saved, and the technological operation process is simplified.

Description

technical field [0001] The invention belongs to the technical field of centrifugal compressors, in particular to a multi-shaft centrifugal compressor. Background technique [0002] The traditional compressor adopts a single-shaft structure, which is suitable for pressurizing a single-component fluid medium. However, in the petrochemical field, it is often necessary to input a variety of gases or liquids into the reactor for chemical reactions, which is The mutual cooperation of multiple centrifugal compressors is required. For a single-shaft centrifugal compressor, at most, a two-way air intake structure can only be used, that is, it can only be used for two fluid media. Therefore, it is necessary to consider adopting a multi-shaft structure, that is, to design a multi-shaft centrifugal compressor to meet the needs of petrochemical enterprises. [0003] Chinese patent application CN201110365153.2 discloses a "multi-shaft centrifugal compressor", which includes multiple sing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D17/12F04D29/053
CPCF04D17/127F04D29/053
Inventor 石雪松
Owner SHENYANG SITE MACHINERY MFG