High-pressure regulating valve for steam turbine

By designing a high-pressure regulating valve for turbines, the balanced hole structure of the pre-start valve and screw plug is used to reduce the pressure difference of the main disc valve, and the sealing performance is improved through the sealing ring and linear contact structure, the problems of easy breakage and poor sealing performance in the existing regulating valves are solved, achieving higher stability and sealing effect.

CN119712244APending Publication Date: 2025-03-28HARBIN TURBINE +1
0 Cites 1 Cited by

Patent Information

Application Number
CN202411924712.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-25
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing steam turbine regulating valves have problems such as the valve stem is prone to break and the main valve disc sealing performance is poor.

Method used

A high-pressure regulating valve for steam turbine is designed. The pre-start valve is driven away from the steam port of the main disc valve through the valve stem. The steam flows along the balance hole on the steam port and the screw plug, reducing the pressure difference between the front and rear of the main disc valve, improving the opening convenience, and improving the sealing performance through the sealing ring and linear contact structure.

Benefits of technology

This design reduces the risk of breaking the valve stem, improves the sealing performance of the main valve disc, ensures the sealing effect of the valve when closed, and improves the stability and opening speed of the valve.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A high-pressure regulating valve for a steam turbine relates to the technical field of valves. The problems that a valve rod of an existing adjusting valve is prone to breakage, and the sealing performance of a main valve disc is poor are solved. The butterfly valve comprises a valve shell, a valve rod, a valve cover, a valve seat, a pre-starting valve and a main butterfly valve, a steam channel and an installation opening communicated with the steam channel are formed in the valve shell, the valve cover is installed at the installation opening, the valve seat is installed at a steam outlet of the steam channel, the valve seat is provided with a conveying channel communicated with the steam outlet, and the pre-starting valve is arranged in the conveying channel. A sealing cover is arranged in the valve shell, the valve rod drives the pre-opening valve to be far away from the steam through hole of the main butterfly valve, steam can flow to the other side of the main butterfly valve along the steam through hole and the balance hole in the screw plug at the moment, and therefore the pressure difference between the front portion and the rear portion of the main butterfly valve is reduced, and the main butterfly valve is more convenient to open; the integrity of the structure of the valve rod is kept on the basis that the pre-opening valve can be achieved, the valve rod is not prone to breakage in the using process, it is avoided that a balance hole is formed in the main butterfly valve, and the sealing performance is guaranteed when the valve is closed.
Need to check novelty before this filing date? Find Prior Art