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multistage centrifugal compressor

A technology for centrifugal compressors and electric motors, which is applied to mechanical equipment, engine functions, machines/engines, etc. It can solve the problem that the oil cooler piping is not considered to be included in the integrated casing, etc., and achieve the effect of increasing the margin

Active Publication Date: 2015-10-14
HITACHI IND EQUIP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the multi-stage compressors described in these patent documents 2 and 3, it is not considered that the piping to the oil cooler through which the cooling water introduced from the same cooling source is also included in the integrated casing.

Method used

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Examples

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Embodiment Construction

[0022] Next, embodiments of the multistage centrifugal compressor according to the present invention will be described using the drawings. figure 1 It is a perspective view of the multi-stage centrifugal compressor 100 and is a diagram mainly explaining fluid (air) piping and cooling water piping. figure 2 yes figure 1 A top view of the multi-stage centrifugal compressor 100 is shown. In these figure 1 as well as figure 2 In , part of the lubricating oil piping is omitted. image 3 It is a systematic diagram for explaining lubricating oil piping, and is a plan view of the multistage centrifugal compressor 100 omitting water piping, air piping, and the like.

[0023] The multistage centrifugal compressor 100 is driven by a motor 3 which is an electric motor, and is controlled by a control unit housed in a control panel not shown. The input shaft 6 of the step-up unit 2 is connected to the output shaft of the motor 3 via a coupling. On the input shaft 6, a driving bull g...

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Abstract

PROBLEM TO BE SOLVED: To provide a multistage centrifugal compressor for aggregating cooling water pipes. SOLUTION: The multistage centrifugal compressor 100 includes a parallel gear speed increaser part 2 for storing a bull gear and two pinions for meshing with the bull gear, a centrifugal impeller installed in three end parts of a rotary shaft provided with the respective pinions, and an integral casing 15 integrated with a cooler part for cooling high temperature working gas compressed by the centrifugal impeller. A lower part of the integral casing is integrally constituted of a casting by juxtaposing a first intercooler 13a, a second intercooler 13b and an aftercooler 13c. An integral cooling water flow passage 32 for an oil cooler having a flow passage for supplying cooling water to the oil cooler 35 for cooling lubricating oil and an oil cooler cooling water return flow passage from the oil cooler, is formed integrally with an integral cooler and the casting in a side part of the first intercooler. These flow passages and pipes to the coolers are connected to a cooling water supply pipe 30 and a cooling water return pipe 31, and cooling pipes are aggregated. COPYRIGHT: (C)2012,JPO&INPIT

Description

technical field [0001] The present invention relates to a multi-stage centrifugal compressor, and more particularly to a multi-stage centrifugal compressor including a cooler for cooling a compressed working fluid on the downstream side of impellers of each stage of the compressor. Background technique [0002] An example of a conventional multistage centrifugal compressor is described in Patent Document 1. In the multistage centrifugal compressor described in this gazette, the power of the electric motor is transmitted to the two output shafts of the speed increaser. The speed increaser has an input shaft connected to a motor shaft and mounted with a drive bull gear, and two output shafts provided with a pinion gear meshing with the drive bull gear and arranged parallel to the input shaft. A primary centrifugal impeller forming a multistage centrifugal compressor is attached to one end of the output shaft, and secondary and tertiary centrifugal impellers forming a multista...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42F04D29/58
CPCF04D17/12F04D25/02F04D29/002F04D29/063F04D29/286F04D29/582F05D2210/12F05D2260/208F05D2260/98F16H57/04
Inventor 田中征将植木彻
Owner HITACHI IND EQUIP SYST CO LTD