Anti-surge controller of centrifugal compressor

By installing a pressure gauge and control valve in the air inlet and outlet ducts of the centrifugal compressor, the pressure is balanced, and the gas discharge is accelerated by using the vent valve and auxiliary pressure relief mechanism, the pressure fluctuation and vibration problems caused by compressor surge are solved, and the system stability and noise reduction are achieved.

CN222686917UActive Publication Date: 2025-03-28CHANGZHOU JINTAN HI-TECH INSTR FACTORY
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Patent Information

Application Number
CN202421258467.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-04
Publication Date
2025-03-28
Estimated Expiration
2034-06-04

AI Technical Summary

Technical Problem

When a centrifugal compressor is surged, due to the pressure fluctuation between the inlet and outlet ducts, the airflow is strongly pulsating and periodic oscillating, which destroys the stability of the process system, increases blade vibration and noise, and may damage the bearings and seals.

Method used

A centrifugal compressor anti-surge controller is designed to detect and balance the pressure of both by installing a pressure gauge in the inlet and outlet ducts. When the pressure is unbalanced, open the control valve and introduce the gas from the air outlet duct into the air inlet duct. Use the vent valve and auxiliary pressure relief mechanism to speed up the gas discharge to achieve the balance of the pressure of the air inlet and air outlet duct.

Benefits of technology

Effectively reduce or avoid compressor surge phenomena, maintain the stability of the process system, reduce blade vibration and noise, and extend the service life of the equipment.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model relates to the technical field of compressors, and discloses a centrifugal compressor anti-surge controller which comprises a compressor body, an air inlet pipe and an air outlet pipe are connected to the surface of the compressor body in a penetrating mode, and pressure gauges are fixedly installed in the air inlet pipe and the air outlet pipe correspondingly; the device comprises an air inlet pipe and an air outlet pipe, a backflow pipe is fixedly connected between the air inlet pipe and the air outlet pipe in a penetrating mode, a control valve is fixedly installed in the backflow pipe, an emptying valve is fixedly installed at the air outlet end of the air outlet pipe, and an auxiliary pressure relief mechanism is arranged on the surface of the air outlet pipe. And when the pressure is unbalanced, the control valve is opened, gas of the air outlet pipe is guided into the air inlet pipe, and gas discharge of the air outlet pipe is accelerated by arranging the emptying valve and the auxiliary pressure relief mechanism, so that the pressure in the air inlet pipe and the pressure in the air outlet pipe are balanced, and the surge phenomenon of the compressor body is reduced or avoided.
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