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Structure and method for reducing surge phenomenon of centrifugal compressor and automatically adjusting flow

A centrifugal compressor, automatic adjustment technology, applied in the direction of machine/engine, mechanical equipment, non-variable-capacity pump, etc., can solve the low safety and reliability of centrifugal surge protection, and cannot effectively achieve centrifugal compressor. The purpose of surge protection and other issues, to achieve the effect of reducing the surge phenomenon and automatically adjusting the flow

Inactive Publication Date: 2020-05-08
云南瑞斯德机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The methods used in industry to protect centrifugal compressors and reduce surge include single-loop circulation method, outlet venting method and other single methods. The safety and reliability of centrifugal surge protection are low, and centrifugal compression cannot be effectively achieved. Purpose of machine surge protection

Method used

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  • Structure and method for reducing surge phenomenon of centrifugal compressor and automatically adjusting flow
  • Structure and method for reducing surge phenomenon of centrifugal compressor and automatically adjusting flow
  • Structure and method for reducing surge phenomenon of centrifugal compressor and automatically adjusting flow

Examples

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Effect test

example 1

[0038] The invention provides a structure and method for reducing the surge phenomenon of a centrifugal compressor and automatically adjusting the flow rate, including the following:

[0039] see figure 2 with Image 6 , when the centrifugal compressor is running, the vibration sensor (2) detects the vibration frequency, and transmits the data to the data processing module (21) of the vibration detector, and the data processing module (21) of the vibration detector transmits the data to the computer (18), Computer (18) transmits data on the display (19), and shows on the display (19).

[0040] see figure 2 with Image 6 When the centrifugal compressor is running, the thermocouple (3) detects the temperature in the casing, the thermocouple (3) transmits the data to the thermocouple data processing module (22), and the thermocouple data processing module (22) transmits the detection result To computer (18), computer (18) transmits data on the display (19), shows on display...

example 2

[0048] The invention provides a structure and method for reducing the surge phenomenon of a centrifugal compressor and automatically adjusting the flow rate, including the following:

[0049] see Image 6 , Figure 8 , when the centrifugal compressor is running, when the flow display meter No. 2 (10) measures the flow rate of the exhaust pipe (9) at this time to be d1, it is transmitted to the PLC (17), and the vibration frequency measured by the vibration detector (2) is It is transmitted to PLC (17) for k0. The PLC (17) transmits the data to the computer (18). According to the established relationship between the vibration frequency and the flow rate of the exhaust pipe (9), the computer (18) analyzes that the vibration frequency is k2-k3 as the normal working area, k1-k2 as the surge area, and greater than k3 as the resistance stagnation area. When k0 is in the k2-k3 area, the computer judges that k0 is in the k2-k3 area at this time, and this area is the normal working...

example 3

[0051] The invention provides a structure and method for reducing the surge phenomenon of a centrifugal compressor and automatically adjusting the flow rate, including the following:

[0052] see Image 6 , Figure 9 , when the centrifugal compressor is running, when the flow display meter No. 2 (10) measures the flow rate of the exhaust pipe (9) at this time, y1 is transmitted to the PLC (17), and the flow display meter No. 1 measures the suction port (7) The flow is transmitted to PLC (17) for c0. The PLC (17) transmits the data to the computer (18). The computer (18) analyzes the relationship between the flow of the suction port (7) and the flow of the exhaust pipe (9) based on the established flow, and the flow at this time is c2-c3, which is the normal working area, and c1-c2 is the surge area, Greater than c3 is the block zone. When c0 is in the c2-c3 area, the computer judges that c0 is in the c2-c3 area at this time, this area is the normal working area, and the ma...

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Abstract

The invention provides a structure and method for reducing the surge phenomenon of a centrifugal compressor and automatically adjusting the flow. Performance testing of the structure for reducing thesurge phenomenon of the centrifugal compressor and automatically adjusting the flow is carried out, a surge control line function is calculated, a surge line, a retardation line and a surge control line in the function divide a working condition area of the centrifugal compressor into a surge area, a normal working condition area and a retardation area, when a display screen in a controller displays the that the relation between the temperature and the exhaust pipe flow, the relation between the vibration frequency and the exhaust pipe flow and the relation between a suction inlet and the exhaust pipe flow are all in the normal working area, a computer does not give any instruction to a PLC, and the centrifugal compressor works normally; and when the relation area between any one of the temperature, the vibration frequency and the suction inlet flow and the exhaust pipe flow is not in the normal working area any more, an electromagnetic valve is adjusted by the controller. The surge phenomenon caused by adjustment errors due to instability of one factor is avoided.

Description

technical field [0001] The discovery relates to the technical field of centrifugal compressors, in particular to a centrifugal compressor structure for preventing surges of centrifugal compressors and automatically adjusting the flow rate so as to prevent surges. Background technique [0002] The centrifugal compressor is the core power equipment in the industrial production process, so the operation status of the centrifugal compressor directly affects the entire industrial production process. However, during the operation of the centrifugal compressor, when the flow rate decreases to the minimum, the outlet pressure will suddenly drop, and the pressure in the downstream pipeline will be higher than the outlet pressure instead, so the conveyed medium will flow back into the casing from the exhaust pipe until The outlet pressure rises until the medium is sent to the pipeline again. When the pressure in the pipeline returns to the original pressure, the flow rate decreases a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D25/08F04D27/00F04D27/02
CPCF04D25/08F04D27/001F04D27/02
Inventor 王勇
Owner 云南瑞斯德机械有限公司
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