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Multi-stage centrifugal compressor and maintenance method thereof

A centrifugal compressor, prime mover technology, applied in mechanical equipment, engine functions, engine components, etc., to reduce maintenance work

Active Publication Date: 2014-09-03
HITACHI IND EQUIP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the difference from the above-mentioned Patent Document 1 is that the second-stage impeller is installed on the opposite end of the output shaft to which the primary impeller is installed, and on the other output shaft on which the third-stage impeller is installed, what is at the opposite end of the third-stage impeller? also not installed

Method used

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  • Multi-stage centrifugal compressor and maintenance method thereof
  • Multi-stage centrifugal compressor and maintenance method thereof
  • Multi-stage centrifugal compressor and maintenance method thereof

Examples

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Embodiment Construction

[0021] Embodiments of the multistage centrifugal compressor according to the present invention will be described below using the drawings. figure 1 is a perspective view of a multistage centrifugal compressor 100, figure 2 yes figure 1 The shown plan view of the multi-stage centrifugal compressor 100 is a figure in which the upper casing 11 of the integral casing 10 which will be described in detail below is removed. image 3 yes figure 2 A-A sectional view in . in the image 3 In Fig. 1 , it is also shown with the upper casing 11 removed. Figure 4 yes image 3 An exploded perspective view of main parts in , showing the vicinity of the main lubricating oil pump 24 .

[0022] The multistage centrifugal compressor 100 is driven by a motor 3 as a prime mover, and is controlled by a control unit housed in a control panel 4 . An input shaft 6 is connected to the output shaft of the motor 3 via a coupling 5 . A large gear 20 is installed on the input shaft 6 . Two pinion...

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Abstract

PROBLEM TO BE SOLVED: To alleviate maintenance work of a multistage centrifugal compressor for compressing an actuation gas by impellers attached to two output shafts of a parallel shaft gear speed increaser.SOLUTION: The multistage centrifugal compressor includes: a motor; an input shaft driven by the motor and attached with a bull gear; the two output shafts arranged parallel to the input shaft and formed with pinions intermediately thereof in an axial direction; centrifugal impellers attached at least to three ends of the two output shafts; an integrated casing in which a gear speed increaser for accommodating the bull gear and the pinions and a cooler part for cooling the actuation gas at a high temperature compressed by the centrifugal impellers are integrated; and an upper casing for covering an upper surface of the integrated casing. A gear speed increaser part of the integrated casing, where the bull gear is accommodated, extends in the axial direction, and an end surface of the extension part is detachably attached with a lubricating pump of the multistage centrifugal compressor.

Description

technical field [0001] The present invention relates to a multi-stage centrifugal compressor and its maintenance method, in particular to a multi-stage centrifugal compressor with a cooler for cooling compressed working fluid on the downstream side of the compressor impellers at each stage and its maintenance method. Background technique [0002] As a conventional multistage centrifugal compressor, there is an example described in Patent Document 1. In the multistage centrifugal compressor described in this gazette, the power of the prime mover is transmitted to the two output shafts of the speed increaser. The speed increaser has: an input shaft connected to the prime mover shaft and equipped with a bull gear; and two output shafts arranged parallel to the input shaft and provided with a pinion gear meshed with the bull gear. A primary centrifugal impeller forming a multi-stage centrifugal compressor is installed at an end of one output shaft, and secondary and tertiary ce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42
CPCF04D17/12F04D25/02F04D29/002F04D29/601F05D2210/12F05D2260/31F05D2260/403F05D2260/60F16N13/00Y10S415/00
Inventor 田中征将植木彻
Owner HITACHI IND EQUIP SYST CO LTD