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Combined steam turbine valve having integrated prestroke design

A steam turbine, first fluid technology, applied in the direction of lift valve, sliding valve, valve details, etc., can solve complex problems

Inactive Publication Date: 2015-06-17
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Of course, such a compact design in the valve housing is more complex than a separate embodiment with quick-closing valve and regulating valve in each case due to the design
Thus, for example, the challenge arises in re-opening a closed quick-closing valve with as little force as possible.

Method used

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  • Combined steam turbine valve having integrated prestroke design

Examples

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Effect test

Embodiment Construction

[0018] exist figure 1 A cross-sectional view of the modulating-quick-closing valve 1 is shown in . The regulating-quick closing valve 1 basically comprises a valve housing 2 , wherein a combined quick closing and regulating valve is arranged inside the valve housing 2 . An inlet pressure chamber 3 and an outlet pressure chamber 4 are arranged inside the valve housing 2 . The steam flows into the inlet pressure chamber 3 and bypasses into the outlet pressure chamber 4 . When the regulating-quick-closing valve 1 is fully opened, the thermodynamic value of the live steam remains virtually unchanged along the path from the inlet pressure chamber 3 to the outlet pressure chamber 4 .

[0019] exist figure 1 In the example shown in , the live steam is deflected by 90° from the inlet pressure chamber 3 to the outlet pressure chamber 4 .

[0020] A receiving element 5 is arranged on the valve housing 2 . The receiving element 5 is connected gas-tight to the valve housing 2 via sui...

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Abstract

The valve (1) has a guide pot (9) protruding an inner side of a valve housing (2). A quick-action stop valve cone (7) is vapor-tightly sealed against the guide pot. A pressure output chamber (4) is sealable relative to a pressure input chamber (3). A central spindle (11) drives the stop valve cone toward a valve seat (10). The central spindle is designed such that a fluidic connection (16) is formed between the pressure output chamber and a return chamber (17) during opening the stop valve cone, where the return chamber is arranged behind the stop valve cone. An independent claim is also included for a method for operating a combined quick-action stop and control valve.

Description

technical field [0001] The invention relates to a regulating-snap-closing valve for a steam turbine, having a valve housing, on the inside of which a pilot cylinder protrudes, the axis of which is relative to the valve seat of the regulating-snap-closing valve concentrically arranged and longitudinally displaceable concentrically and axially independent of one another in the pilot cylinder, the regulating valve cone and the quick-closing valve cone are arranged gas-tightly sealed relative to the pilot cylinder, wherein the quick-closing valve cone is hermetically sealed against the pilot cylinder, wherein the regulating-quick-closing valve has an inlet pressure chamber and an outlet pressure chamber which is sealable relative to the inlet pressure chamber, wherein a preactuation in the direction of the valve seat is configured Center stem for quick closing of the valve cone. Background technique [0002] In the construction of steam turbines, turbine valves are required whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D17/14F16K3/26F16K1/44F16K1/52
CPCF01D17/145F05D2220/31F16K1/443F16K39/024
Inventor 马克西米利安·尼德雷厄丹尼尔·怀特尔
Owner SIEMENS AG
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