Steam supply circuit from a turbine

Patent metadata

Field	Value
Publication number	US-10260347-B2
Application number	US-201313913849-A
Country	US
Kind code	B2
Filing date	Jun 10, 2013
Priority date	Dec 10, 2010
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

Abstract

The technical field of the invention is steam turbines including a steam feed circuit based on a functional steam generator set that may be nuclear- or fossil-fuel powered, and in particular a steam feed circuit (1) of a turbine (2), comprising n main steam lines (3) and n′ steam admission lines (4) to the turbine, the number n′ of steam admission lines (4) to the turbine being strictly greater than the number n of main steam lines (3), characterized in that there are n direct steam admission lines (5) to the turbine linking the as main steam lines (3) directly to the steam admission lines (4) to the turbine.

First claim

The invention claimed is:

1. A steam feed circuit of a turbine comprising n main steam lines in parallel and n′ steam admission lines to the turbine in parallel, the number n′ of the steam admission lines to the turbine being strictly greater than the number n of the main steam lines diverting from a steam generator;
wherein there are n direct steam admission lines directly connected to each of the main steam lines; and
n′−n indirect steam admission lines configured to receive at least a portion of steam from each of the n main steam lines and provide the received steam to the turbine and also to at least one feed line enabling a device other than the turbine to be supplied with steam.

2. The steam feed circuit according to claim 1 , wherein each of the n main steam lines are directly connected to a steam generator.

3. The steam feed circuit according to claim 1 , wherein each of the n′ steam admission lines are directly connected to a first stage of the turbine.

4. The steam feed circuit according to claim 1 , wherein the n′−n indirect steam admission lines are configured to receive at least a portion of steam from at least one of the n direct steam admission lines via at least one diverted steam line tapped onto said at least one of the n direct steam admission line.

5. The steam feed circuit according to claim 4 , wherein the at least one diverted steam line is configured to supply team to other auxiliary steam users.

6. The steam feed circuit according to claim 1 , wherein n is between 2 and 6 and/or n′ is between 3 and 8.

7. The steam feed circuit according to claim 1 , wherein n′=n+1.

8. The steam feed circuit according to claim 4 , wherein the indirect steam admission lines are fed by n diverted steam lines tapped onto the n respective direct steam admission lines to the turbine.

9. The steam feed circuit according to claim 1 , wherein n′=n+2.

Assignees

• Alstom Technology Ltd
• General Electric Technology Gmbh

Inventors

• Jourdain Vincent
• Viola Bernard
• Milet Damien

Classifications

• F02C1/05

  characterised by the type or source of heat, e.g. using nuclear or solar energy · CPC title

• F01D15/10

  Adaptations for driving, or combinations with, electric generators · CPC title

• F01D1/023 Primary

  the working-fluid being divided into several separate flows (F01D3/02 takes precedence); several separate fluid flows being united in a single flow; the machine or engine having provision for two or more different possible fluid flow paths · CPC title

• F01D1/18 Primary

  without stationary working-fluid guiding means; (F01D1/24, F01D1/32, F01D1/34 take precedence; {with pressure-velocity transformation exclusively in rotor F01D1/32}) · CPC title

• F01D17/18

  varying effective number of nozzles or guide conduits {, e.g. sequentially operable valves for steam turbines} · CPC title