An adjustable extraction device for adjusting an extraction steam turbine

By introducing an intermediate steam chamber and an external pipeline system into the steam turbine, the problems of high extraction steam pressure and poor control accuracy are solved, achieving efficient and simplified extraction steam regulation, which is suitable for the retrofitting of various steam turbine units.

CN224413719UActive Publication Date: 2026-06-26NANJING TURBINE & ELECTRIC MASCH (GRP) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING TURBINE & ELECTRIC MASCH (GRP) CO LTD
Filing Date
2025-08-11
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In the existing technology, the steam extraction regulating device of the steam turbine has problems such as being unable to be used when the extraction pressure is higher than 2.0 MPa, poor control accuracy of the rotating diaphragm, complex structure and high installation requirements.

Method used

It adopts an intermediate steam chamber and an external pipeline system, controls the steam intake through a butterfly valve, and realizes an adjustable steam extraction function by utilizing the intermediate steam chamber and external pipeline, which simplifies the structure and improves the control accuracy.

Benefits of technology

It achieves precise control under high extraction steam pressure, simplifies the device structure, reduces installation complexity, facilitates maintenance, and is suitable for the retrofitting of various steam turbine units.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224413719U_ABST
    Figure CN224413719U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of adjustable steam extraction devices for adjusting extraction steam turbine, belong to the field of steam turbine in electric power energy industry.The device includes the intermediate steam chamber and cylinder outer pipeline system in steam turbine cylinder;The intermediate steam chamber is composed of semicircular steam chamber upper half and steam chamber lower half, the inside of steam chamber lower half is equipped with steam chamber, the bottom of steam chamber is equipped with inlet steam guide pipe, the axial steam outlet side of steam chamber is equipped with several vane nozzle steam channel;The steam chamber upper half is baffle in axial steam outlet side;The cylinder outer pipeline system includes the pipeline of intercommunication intermediate exhaust steam chamber and intermediate steam chamber, butterfly valve is equipped on pipeline, part of steam body discharged from intermediate exhaust steam chamber is transported to intermediate steam chamber by the cooperation of pipeline and butterfly valve.The utility model has good steam tightness, high steam control precision, simple structure.
Need to check novelty before this filing date? Find Prior Art