Centrifugal air compressor and control method and system thereof

A technology of centrifugal air compressor and control method, which is applied in the direction of pump control, mechanical equipment, non-variable pump, etc., can solve the problems of low reliability and manpower consumption, and achieve the effect of ensuring reliability and saving manpower

Inactive Publication Date: 2012-06-27
北京时代科仪新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, in order to make the air compressor work in a safe area, it is necessary to ensure a relatively large flow rate. Therefore, in actual use, the user generally opens the vent valve 14 according to experience and

Method used

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  • Centrifugal air compressor and control method and system thereof
  • Centrifugal air compressor and control method and system thereof
  • Centrifugal air compressor and control method and system thereof

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Embodiment Construction

[0061] The invention provides a new scheme for controlling the centrifuge air compressor: after receiving the flow or pressure value specified by the user, the centrifugal air compressor is controlled to work according to the corresponding state, and the measured pressure and flow are collected in real time, and will The calculated flow value is determined as the reference flow, and compared with the measured flow, and the opening value of the vent valve is adjusted according to the comparison result, so that the measured flow is as close as possible to the reference flow. During this process, the user only needs to input the required flow or pressure value, and there is no need to adjust the opening of the vent valve based on experience, which saves manpower and ensures reliability.

[0062] In order to clearly and fully introduce the technical solution of the present invention, some knowledge about surge is introduced below:

[0063] Surge refers to the mechanical vibration ...

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Abstract

The invention relates to a centrifugal air compressor, a control method thereof and a control system thereof. The method is performed after the centrifugal air compressor works in a state corresponding to an appointed flow or pressure value input by a user and comprises the following steps of: acquiring the actual pressure and the actual flow of the front end of an emptying valve in the centrifugal air compressor; according to the corresponding relation between the pressure and the flow, determining a reference flow corresponding to the actual pressure; and adjusting the opening degree of the emptying valve to make the actual flow approximate to the reference flow. In a working process of the embodiment, the user only needs to input a required flow or pressure value and does not need to adjust the opening degree of the emptying valve according to experience, so the labor is saved and the reliability is ensured. In addition, the working state of the centrifugal air compressor is also monitored in real time, and when the centrifugal air compressor is determined to have a surging precursor, the corresponding relation between the pressure and the flow is adjusted to increase the reference flow, so the opening degree of the emptying valve is directly increased to a relatively greater extent, and surging is avoided.

Description

technical field [0001] The present invention relates to the technical field of air compressors, and more specifically relates to a centrifugal air compressor, a control method and a control system for the centrifugal air compressor. Background technique [0002] Centrifugal air compressor is a centrifugal air compressor. Its working principle is similar to that of a blower, that is, through the high-speed rotation of the impeller, the air is sucked in and then accelerated to rotate and generate centrifugal force, thereby generating dynamic pressure, which is then converted into static pressure. Then form the compressed air with a certain pressure and output it. [0003] The centrifugal air compressor belongs to the speed compressor, which is characterized by oil-free, compact structure, few vulnerable parts, high efficiency, and large flow rate. It is widely used in industries that require a large amount of low-pressure compressed air and oil-free compressed air. . [0004...

Claims

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Application Information

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IPC IPC(8): F04D27/00F04D17/12F04D29/00
Inventor 曾洪骏闫永勤
Owner 北京时代科仪新能源科技有限公司
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