Flow dividing device for a condensation steam turbine having a plurality of outlets

A technology of diverting device and steam turbine, applied in safety devices, non-variable-capacity engines, mechanical equipment, etc., can solve the problems of damage to the thermodynamic efficiency of condensing steam turbines, high flow loss of steam flow, etc., to avoid flow separation, high The effect of thermal efficiency
CN103080480AInactive Publication Date: 2013-05-01SIEMENS AG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SIEMENS AG
Publication Date
2013-05-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a flow dividing device for a condensation steam turbine having a plurality of outlets comprising a flow divider (5) dividing the total steam flow within the waste steam housing (2) into two steam flows (30, 31), each flowing through an associated condenser (14, 15), a stagnation point detection device (18-20) for locating the stagnation point (29) formed upon dividing the total steam flow at the front edge of the flow divider (6), and a coolant dividing device (21, 22) by means of which the coolant infeed (23) to the condensers (14, 15) is controlled as a function of the location of the stagnation point (29) such that the stagnation point (29) is centered on the flow divider (5) while avoiding a flow disruption (32).
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Description

technical field

[0001] The present invention relates to a flow splitter device for a condensing steam turbine having multiple outlets. Background technique

[0002] The stage of the condensing steam turbine, which consists of a stationary guide wheel and an impeller rotating about the machine axis, is designed, for example, as a Bowman stage in which annular webs are mounted, by means of which the blade passages are Divided into external and internal subchannels. Here, the steam mass flow in this stage is divided by means of a flow divider into two sub-streams, which are then led to the condenser via a further set of blades via different expansion paths. The web is fitted into the guide vane cascade in a manner crossing the guide vanes, wherein the web has an annular leading edge.

[0003] Usually, the webs are rigidly constructed so that the inclination of the leading edge relative to the machine axis of the condensing steam turbine is always constant over time. The infl...

Claims

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