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Combined quick acting control valve for a steam turbine

A fast-closing, steam-turbine technology, applied in the direction of lift valves, sliding valves, valve details, etc., can solve the problems of large space requirements, large volume, high material input, etc., and achieve the effect of saving space

Inactive Publication Date: 2012-02-15
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, poppet valves have traditionally been designed with large and heavy housings, resulting in a high material investment
The result of this is a high production outlay at high cost
In addition, conventional poppet valves have a large space requirement, so that the piping on the live steam side of the steam turbine housing has a rather large volume

Method used

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  • Combined quick acting control valve for a steam turbine
  • Combined quick acting control valve for a steam turbine

Examples

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Embodiment Construction

[0010] As can be seen from FIG. 1 , the quick-closing control valve 1 has a housing 2 which is designed cylindrically. In the cylindrical wall of the housing 2, said housing 2 has an inlet opening 3 and an outlet opening 4, wherein the center points of the openings 3, 4 lie on an imaginary line which is aligned with the cylindrical housing 2. The central axis extends vertically. On the inlet hole 3 an inflow channel 5 can be connected, and on the outlet hole 4 an outflow channel can be connected, so that a steam flow 7 is led to the inlet hole 3 through the inflow channel 5 and a steam flow 7 is discharged from the outlet hole 4 through the outflow channel 6 . If the quick-closing regulating valve 1 is installed on a steam turbine, the live steam connection of the steam turbine forms the outflow channel 6 , whereas the live steam line forms the inflow channel 5 .

[0011] The housing 2 is formed by a cylindrical section 8 which is closed on one side by means of a cover 9 on ...

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PUM

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Abstract

The invention relates to a quick acting control valve for a steam turbine, comprising a box (2) having an inlet opening (3) through which the steam (7) can flow into the interior (11) of the box (2), and an outlet opening (4) through which the steam (7) can flow out of the interior (11) of the box, and a piston (13) which is arranged in the box (2) and always rests against the box (2) on its outer periphery in a steam-tight manner and has a passage (14) leading to the outer periphery, the piston (13) being arranged such that it can be displaced relative to the box (2) and can be thereby brought into a passage position and into a blocking position. In the passage position, steam (7) can pass from the inlet opening (3) to the outlet opening (4) via the passage channel (14) depending on the degree of overlap of the inlet opening (3), the outlet opening (4) and the passage channel (14), thereby allowing the control function of the quick acting control valve (1). In the blocking position, the inlet opening (3) and / or the outlet opening (4) is / are closed by the outer periphery of the piston (13), thereby allowing the quick action of the quick acting control valve (1).

Description

technical field [0001] The present invention relates to a quick-closing regulating valve for a steam turbine, wherein, in the fast-closing regulating valve, a regulating valve and a fast-closing valve are combined with each other. Background technique [0002] On steam turbines such as those used in steam power plants, for safe operation of the steam turbine, a shut-off mechanism is provided on the live steam side via a quick-closing valve, and a regulating valve is provided to regulate the supply of live steam to the steam turbine . The regulating valve and the quick-closing valve are respectively installed in a separate housing in succession. For safety reasons, the quick closing capability is redundantly provided by a regulating valve and a quick closing valve. The regulating valve and the quick-closing valve each have their own disk spring, which in the event of a fault leads to a quick closing of the valve. Conventionally, the quick-closing valve and the regulating v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/56F16K47/02F01D17/14F16K1/44F16K3/26
CPCF16K31/56F01D17/145F05D2220/31F16K3/262
Inventor 马丁·本瑙尔宁西·弗洛尔迈克尔·宁豪斯克里斯托夫·申德勒迪尔克·韦尔特斯巴赫
Owner SIEMENS AG
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