Operation method for optimized starting of steam turbine

An operation method and technology of steam turbines, applied in the direction of engine starting, machine/engine, mechanical equipment, etc., can solve the problem of no shutdown operation, etc., and achieve the effect of increasing the power generation load, optimizing the starting operation, and shortening the starting time.

Pending Publication Date: 2020-12-01
SHAANXI BEIYUAN CHEM GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an operation method for optimized start-up of a steam turbine, so as to solve the problem that the existing steam turbine jacking shaft oil system failure does not stop when the existing steam turbine jacking oil system is faulty.

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  • Operation method for optimized starting of steam turbine
  • Operation method for optimized starting of steam turbine
  • Operation method for optimized starting of steam turbine

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] It is clearly stipulated in the steam turbine regulations: when the speed of the steam turbine reaches 500rpm during start-up, it needs to be maintained for 5 minutes for a comprehensive inspection. Only when the temperature is higher than 140°C can the speed be increased to 2000rpm, and the speed of the steam turbine is higher than 1300rpm before the jacking shaft oil pump can be stopped.

[0043] According to the previous operation experience and the ...

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Abstract

The invention discloses an operation method for optimized starting of a steam turbine. The operation method comprises the steps that the steam turbine is heated at a low speed, then heated at a mediumspeed and heated at a high speed; in the medium-speed heating period of the steam turbine, if leakage of a jacking oil pump system appears, the speed is increased, turbine heating continues, but a jacking oil pump of the jacking oil pump system is stopped, and then the leakage defect of the jacking oil pump system is overcome. According to the operation method for optimized starting of the steamturbine, the starting operation is effectively optimized, the seamless butt joint of disposal of leakage of the jacking oil pump and a main pipeline under the condition that the rotating speed is notreduced is effectively achieved in the using process, the unit starting time is shortened, the unit power generation load is increased, and benefits are created for enterprises.

Description

technical field [0001] The invention relates to the technical field of steam turbine start-up, in particular to an operation method for optimal start-up of a steam turbine. Background technique [0002] Before the cold start speed of the steam turbine rises to 1300rpm, the jacking shaft oil pump needs to be started to run. It takes 13 minutes to start and increase the speed, 5 minutes to grind and check at 500rpm, and 40-50 minutes to warm up at medium and low speeds. It takes at least 58 minutes from the cold start of the steam turbine to the shutdown of the jacking oil pump. During this period of time, accidents such as blockage of the inlet and outlet filter screens, large cracks and leakage of pipeline vibration, and pump body failure may occur during the operation of the jacking oil pump. It needs to be shut down for processing, which will affect the start-up of the steam turbine and grid connection. [0003] In view of this, the present invention is proposed. Conten...

Claims

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Application Information

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IPC IPC(8): F01D19/00F01D19/02F01D25/10F01D25/20F01D25/00F01D25/16
CPCF01D19/00F01D19/02F01D25/10F01D25/20F01D25/002F01D25/16Y02E10/20
Inventor 徐生智田键奥利军张伟雄
Owner SHAANXI BEIYUAN CHEM GROUP
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