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Multi-compressor control method and compressor system

A technology of compressor system and control method, which is applied in the direction of pump control, machine/engine, mechanical equipment, etc., and can solve problems such as unstable operation of compressors and power consumption of compressors

Inactive Publication Date: 2006-03-29
HITACHI IND EQUIP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, each compressor may consume useless power, or the operation of the compressor may become unstable due to the sudden arrival of an unexpected surge

Method used

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  • Multi-compressor control method and compressor system
  • Multi-compressor control method and compressor system
  • Multi-compressor control method and compressor system

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Experimental program
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Embodiment Construction

[0018] An embodiment of the method for controlling multiple compressors of the present invention will be described below with reference to the accompanying drawings. figure 1 is a schematic diagram of a compressor system in which multiple compressors are connected in parallel, figure 2 This is the power consumption diagram when 4 compressors are connected in parallel. in addition, image 3 is a graph showing the difference between the predicted value of the compressor performance graph and the actual measured value, Figure 4 This is a graph showing the difference in compressor performance due to the suction conditions of the gas sucked into the compressor.

[0019] In the compressor system of this embodiment, such as figure 1 As shown, four compressors A0, B0, C0, and D0 are connected in parallel. The parallel-connected compressors A0 , B0 , C0 , and D0 are controlled by a compressor control device 10 . The compressors A0, B0, C0, and D0 are small-capacity turbo compres...

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PUM

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Abstract

In a compressor system, in which plural numbers of compressors are connected in parallel with, wherein flow rate of all the compressor main bodies driven under load operating condition is decreased down by closing each of the inlet guide vanes thereof, when a load of the compressor goes down, and then the compressor rushing into surge at the earliest is brought into unload operating condition. Thereafter, the flow rates of the compressors other than that brought into the un-load operating conditions are increased up, thereby conducting the operation of the compressor depending upon the load.

Description

technical field [0001] The invention relates to a control method and a compressor system for multiple compressors connected in parallel. Background technique [0002] An example of a compressor system in which a plurality of compressors are connected in parallel is described in JP-A-2000-120583. In this publication, the maximum sum of the supply flow rates of the operating compressors is equal to or greater than the required load flow rate and the required load flow rate is divided into a plurality of flow rate adjustment ranges while minimizing the number of operating compressors. At the same time, a flow rate control method showing a combination of operating compressors and a control state of the operating compressors is set for each flow rate adjustment range, and each compressor is controlled according to the setting method. When including compressors that can only be controlled on and off, set the compressor that can perform constant air pressure control and on-off con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/02F04D27/00F01D17/04F01D17/08
CPCF01D17/04F01D17/08F04D27/0207F04D27/00
Inventor 伊藤俊雄武田和夫
Owner HITACHI IND EQUIP SYST CO LTD