Influence of the remote block of nozzle steam distribution on the efficiency of steam turbines

Zaryankin, Arkadyi; Lavyrev, Ivan; Akatov, Aleksander; Cherkasov, Mikhail

doi:10.1063/5.0041414

Cited by 1 publication

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“…As shown in [3], even with relatively large axial dimensions of the said chamber, the subsequent stage perceives the flow with practically the same circumferential unevenness of the velocity field that is generated by the control stage. In this case, such a generator of circumferential irregularity is an axial rotary diaphragm.…”

Section: Typical Rotary Diaphragms Of Steam Turbines With Adjustable Steam Extraction and Their Disadvantagesmentioning

confidence: 95%

“…Here, with limited axial dimensions, the principle of nozzle steam distribution was implemented, which is characteristic of high-pressure cylinders of most powerful steam turbines. Accordingly, all the disadvantages inherent in this type of steam distribution [3] have remained, the main of which is the partial (in the circumferential direction) of the steam supply to the chamber between the nozzles of the regulating bodies (rotary diaphragm) and the steam inlet into the nozzle array of the post-extraction stages.…”

Section: Typical Rotary Diaphragms Of Steam Turbines With Adjustable Steam Extraction and Their Disadvantagesmentioning

confidence: 99%

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On the rational form of rotary control diaphragms for steam turbines with industrial and cogeneration steam extraction

et al. 2021

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The Russian park of power steam turbines contains a large number of turbines with adjustable steam extraction from the flow path where rotary control diaphragms are used as flow controllers, which structurally easily fit into the flow path of these turbines. This method of regulating the steam flow rate is accompanied by a decrease in the efficiency of the subsequent stages of the turbine and causes the appearance, at reduced loads, of additional disturbing forces acting on the rotor blades. In the presented materials, a variant of a post-sampling stage with a radial rotary control diaphragm is considered. The performed mathematical modeling of the working fluid flows in such a stage showed that in this case, at all turbine loads, a relatively uniform velocity field is provided when steam enters the nozzle apparatus, which naturally entails the elimination of the noted drawbacks.

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Section: Typical Rotary Diaphragms Of Steam Turbines With Adjustable Steam Extraction and Their Disadvantagesmentioning

confidence: 95%

Section: Typical Rotary Diaphragms Of Steam Turbines With Adjustable Steam Extraction and Their Disadvantagesmentioning

confidence: 99%

On the rational form of rotary control diaphragms for steam turbines with industrial and cogeneration steam extraction

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

Influence of the remote block of nozzle steam distribution on the efficiency of steam turbines

Cited by 1 publication

References 0 publications

On the rational form of rotary control diaphragms for steam turbines with industrial and cogeneration steam extraction

On the rational form of rotary control diaphragms for steam turbines with industrial and cogeneration steam extraction

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