Anti-surge gas turbine

By introducing an anti-surge unit into the gas turbine and dynamically adjusting the blade angle, the surge problem in the initial startup phase was solved, the stability and efficiency of the intake airflow field were improved, and the risk of surge was reduced.

CN224432668UActive Publication Date: 2026-06-30CSIC LONGJIANG GH GAS TURBINE CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CSIC LONGJIANG GH GAS TURBINE CO LTD
Filing Date
2025-07-07
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In the initial stage of startup, the intake resistance of existing gas turbines changes nonlinearly during the speed increase process. The fixed throttling structure is prone to sudden changes in intake volume, which can cause instantaneous airflow separation and pressure pulsation, and easily induce surge phenomenon.

Method used

An anti-surge unit is adopted, including an inner support, an outer support, and adjusting blades. Through the coordinated action of hydraulic drive and mechanical transmission, the blade angle is dynamically adjusted to improve the intake airflow field and prevent surge.

Benefits of technology

By adjusting the blade angle in real time, airflow separation and impeller inlet blockage are avoided, the compressor operating point is kept stable, pressure pulsation is quickly suppressed, the risk of surge is reduced, and intake efficiency and reliability are improved through cooling and descaling measures.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224432668U_ABST
    Figure CN224432668U_ABST
Patent Text Reader

Abstract

This utility model relates to the field of gas turbine technology and discloses an anti-surge gas turbine, including a compressor; an intake pipe installed on the compressor; an anti-surge unit, which includes an inner support and an outer support disposed inside the intake pipe; and a plurality of adjusting blades arranged in a ring between the inner and outer supports. The adjusting blades actively regulate the airflow within the intake pipe, reducing airflow separation and pressure pulsation at the intake pipe, improving the intake airflow field, and eliminating surge. Through the anti-surge unit, this utility model can adjust the blade angle in real time, dynamically changing the flow direction and velocity distribution of the airflow within the intake pipe according to operating parameters such as speed and load, maintaining the compressor operating point in a stable region, achieving precise adjustment of the blade angle, quickly suppressing pressure pulsation caused by sudden changes in operating conditions, and blocking the causes of surge.
Need to check novelty before this filing date? Find Prior Art