CN114575940A

CN114575940A - Integrated marine valve cavity structure of arranging

Info

Publication number: CN114575940A
Application number: CN202210229969.0A
Authority: CN
Inventors: 赵世群; 刘建成; 刘统章; 宋禹林; 常倩倩
Original assignee: 703th Research Institute of CSIC
Current assignee: 703th Research Institute of CSIC
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-06-03

Abstract

The invention aims to provide an integrally arranged marine valve cavity structure which comprises two main steam valves and two bypass valves, wherein the two bypass valves comprise one main steam valve and one bypass valve, a common valve cavity is arranged below the two main steam valves and the one bypass valve, and the common valve cavity is communicated with the main steam valves and the bypass valves. The invention implements a structure integrated by a novel valve cavity to reduce the space usage to the maximum extent, reduce the processing complexity and improve the space utilization rate under the condition of extremely strict requirements on the internal and external spaces of the steam turbine. The main steam valve and the bypass valve are highly integrated in a limited space and play the role of a common support. For the cylinder structure of the water surface unit, the design can effectively utilize extremely limited space, and the structure has great significance for a steam turbine.

Description

Integrated marine valve cavity structure of arranging

Technical Field

The invention relates to a steam turbine, in particular to an internal valve cavity structure of the steam turbine.

Background

In the application of the water surface steam turbine, the main steam valve and the inner bypass at the position of the steam inlet valve are of a cavity-divided structure and are distributed at different positions of the steam turbine. And the power requirements of all working conditions of the unit are met through the operation of different valve sub-cavities under different working conditions. In a water surface common unit, the bypass valve and the main steam valve are often located at different positions of a steam turbine cylinder, generally, the main steam valve and the bypass valve are respectively arranged at the upper end of the front part and the upper end of the middle part, when the main steam valve is opened under a cruising working condition, the bypass valve is simultaneously opened under a full-speed working condition, and the bypass valve is opened to enable the steam part to directly enter the through-flow channel from the middle stage. Under the requirement of limited space in the cabin of some water-surface units, when the space requirement is high, a unit bypass valve and a main steam valve are necessary to be integrated, and the integration and the space arrangement are difficult.

Disclosure of Invention

The invention aims to provide an integrally arranged marine valve cavity structure capable of improving the space utilization rate.

The purpose of the invention is realized as follows:

the invention relates to an integrally arranged marine valve cavity structure, which is characterized in that: the main steam valves comprise two main steam valves and one bypass valve, the two main steam valves and the one bypass valve are integrally arranged, a common valve cavity is arranged below the two main steam valves and the one bypass valve, and the common valve cavity is communicated with the main steam valves and the bypass valve.

The invention has the advantages that: the invention implements a structure integrated by a novel valve cavity under the condition of extremely strict requirements on the internal and external spaces of the steam turbine, so that the space utilization is reduced to the maximum extent, the processing complexity is reduced, and the space utilization rate is improved. The main steam valve and the bypass valve are highly integrated in a limited space and play the role of a common support. For the cylinder structure of the water surface unit, the design can effectively utilize extremely limited space, and the structure has great significance for the steam turbine.

Drawings

FIG. 1 is a schematic view of the present invention.

Detailed Description

The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:

with reference to fig. 1, the embodiment of the invention provides an integrally arranged marine valve cavity structure, and the main steam valve and the bypass valve are integrally arranged, so that the space requirement and the manufacturing complexity are greatly met. In the steam turbine operation process, under the operating condition of cruising, main steam valve 2 opens, steam has main steam entry to get into the nozzle runner, under full speed operating mode, bypass valve 1 opens, steam gets into the second level by the bypass entry and begins the acting, two parts acting steam all derive from sharing

valve pocket

3, 3 tops of this public valve pocket simultaneously, as a base of using jointly, support 2 main steam valves and 1 bypass valve, intensity all needs to satisfy the requirement, the layout space has greatly been saved, the integrated nature is extremely strong.

The valve cavity of the main steam valve and the valve cavity of the bypass valve are designed into a whole, the valve cavities are shared, the main steam valve is opened under the cruising working condition, and the bypass valve is opened simultaneously when the full-speed working condition is needed.

After the valve cavities 3 of the two valves are integrated, the upper part of the valve cavity 3 also has the function of a valve support, 2 main steam valves and 1 bypass valve are located on the upper part of the valve cavity 3, and the 3 valves are compactly integrated and designed into a structure meeting the space layout requirement.

The valve cavity structure of the invention has the relevant technical characteristics that:

1. a valve cavity integrated structure is applied in a cylinder of the water surface unit, so that the requirement of compact spatial layout is met;

2. the valve cavity also serves as a base for supporting, and the bypass valve and the main steam valve are collectively located on the valve cavity, so that the space is saved.

Claims

1. An integrated marine valve cavity structure, characterized by: the main steam valve comprises two main steam valves and a bypass valve, wherein the two bypass valves comprise one main steam valve and one bypass valve which are integrally arranged, a common valve cavity is arranged below the two main steam valves and the one bypass valve, and the common valve cavity is communicated with the main steam valves and the bypass valves.