Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for anti-surge when adjusting the air volume and air pressure of an axial flow compressor

An axial flow compressor, anti-surge technology, used in mechanical equipment, machine/engine, pump control, etc.

Active Publication Date: 2016-09-28
HARBIN TURBINE +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of how to realize the anti-surge control of simultaneously adjusting the rotational speed and the angle of the transmissible guide vane when the existing axial flow compressor adjusts the air volume and pressure, the present invention proposes an anti-surge control when adjusting the air volume and pressure of the axial flow compressor vibration method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for anti-surge when adjusting the air volume and air pressure of an axial flow compressor

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0099] Specific Embodiments 1. The anti-surge method of an axial flow compressor described in this embodiment when adjusting the air volume and air pressure is carried out according to the following steps:

[0100]1. Divide the anti-surge control mode according to the meteorological parameters, that is, according to the difference in atmospheric temperature in the four seasons of the year, divide it into three different states: annual average, summer, and winter, and adopt different state control modes, see figure 1 ;

[0101] When the atmospheric temperature is: 4℃≤t<24℃, the annual average state control mode is adopted;

[0102] When the atmospheric temperature is: t≥18°C, the summer state control mode is adopted;

[0103] When the atmospheric temperature is: t<8°C, the winter state control mode is adopted;

[0104] Among them, when the atmospheric temperature is: 18℃≤t<24℃, the annual average state control mode or summer state control mode is adopted;

[0105] When the a...

specific Embodiment approach 2

[0191] Embodiment 2. The difference between this embodiment and Embodiment 1 is that in step 1, according to the difference in atmospheric temperature throughout the year, it is divided into four different states of spring, summer, autumn and winter, and different state control modes are adopted respectively. . Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0192] Embodiment 3. The difference between this embodiment and Embodiment 1 or 2 is that in step 2, in each state control mode, 3 rotational speed control intervals without surge are determined according to the temperature. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an anti-surge method applied when an axial flow compressor adjusts air volume and air pressure and relates to the anti-surge method of the axial flow compressor, in particular to the anti-surge method applied when the axial flow compressor changes rotate speed and rotatable guide vane angles. The anti-surge method aims at solving the problem how to achieve the anti-surge control when an existing axial flow compressor adjusts the air volume and air pressure, and the rotate speed and the rotatable guide vane angles are adjusted simultaneously. The method comprises the following steps that (1) according to three different states, namely annual average, summer and winter, different state control modes are adopted; (2) under each state control mode, four rotate speed control sections where surge does happen are determined according to the temperature values; (3) on the basis that the rotate speed control sections where the surge does not happen are obtained, a rotatable guide vane adjusting control section where the surge still does not happen is determined; (4) by combining the results of the step (1), the step (2) and the step (3), safe control modes of the axial flow compressor in which the surge does not happen are obtained. The anti-surge method is applied to the production field of large-scale compressor equipment used in various regions in China.

Description

technical field [0001] The invention relates to an anti-surge method for an axial flow compressor, in particular to an anti-surge method for an axial flow compressor when the rotating speed is changed and the angle of the guide vane is changed. Background technique [0002] High-pressure ratio, large flow, and high-efficiency axial-flow compressors require a wide range of flow changes, a wide range of stable operation, a wide high-efficiency area, and a large pressure ratio safety margin. However, when the axial flow compressor deviates from the design state, the volumetric flow rate of the gas is not suitable for the flow size and the installation angle of the blades, etc., which causes the separation of the air flow in the cascade flow channel, the deterioration of the operating state of the unit, and even the occurrence of surge phenomenon, which affects the unit. normal work. At present, most of the air volume and air pressure adjustments of axial flow compressors use a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00
Inventor 薛恒王景生郑兰琴刘海旭叶东平冯永志李宇峰张宏涛
Owner HARBIN TURBINE