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Method for calculating influence quantity of steam turbine cylinder efficiency on heat rate

A calculation method and technology of heat rate, which is applied in the field of calculation of the influence of steam turbine cylinder efficiency on heat rate, can solve problems such as no calculation method, and achieve strong practical value, operability, and accurate energy saving effect

Pending Publication Date: 2021-10-08
GUODIAN NANJING ELECTRIC POWER TEST RES CO LTD
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AI Technical Summary

Problems solved by technology

[0004] At present, the calculation methods for calculating the influence of steam turbine cylinder efficiency on heat rate are based on the equivalent enthalpy drop method proposed by Lin Wanchao in the early stage, and there are no other relatively mature calculation methods

Method used

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  • Method for calculating influence quantity of steam turbine cylinder efficiency on heat rate
  • Method for calculating influence quantity of steam turbine cylinder efficiency on heat rate
  • Method for calculating influence quantity of steam turbine cylinder efficiency on heat rate

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Embodiment Construction

[0041] In order to facilitate the understanding of the calculation method of the present invention, the following is a domestic one-time intermediate reheating, single-shaft, three-cylinder, two-exhaust, extraction and condensing steam turbine, and the feedwater reheating is 3 high plus 1 deoxygenation + 4 low plus system, and the unit with steam-driven water pump is described as a column.

[0042] The invention provides a method for calculating the influence of steam turbine cylinder efficiency on heat rate, which includes the following specific steps:

[0043] (1) Collect raw data;

[0044]

[0045]

[0046]

[0047]

[0048] (2) The first calculation of unit cylinder efficiency and heat consumption rate; calculation of high pressure cylinder efficiency η 1 , Medium pressure cylinder efficiency η 2 , Low-pressure cylinder efficiency η 3 , the heat rate HR after system and parameter correction;

[0049] name unit value High pressure cylinder...

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Abstract

The invention discloses a method for calculating the influence quantity of steam turbine cylinder efficiency on heat rate, and the method comprises the following steps: respectively calculating the change quantity of heat rate before and after the change of high-pressure cylinder efficiency, before and after the change of medium-pressure cylinder efficiency and before and after the change of low-pressure cylinder efficiency; adjusting the efficiency of other cylinders is adjusted to be kept unchanged while the efficiency of the high-pressure cylinder, the efficiency of the medium-pressure cylinder and the efficiency of the low-pressure cylinder are kept in single variable change every time, and calculating the influence quantity of the heat consumption rate. According to the method, the process of calculating dynamic balance under variable working conditions of the steam turbine is fully considered, and the energy saving amount can be calculated more accurately by the provided method for calculating the influence amount of the steam turbine cylinder efficiency on the heat consumption rate.

Description

technical field [0001] The invention relates to a calculation method for the influence amount of steam turbine cylinder efficiency on heat consumption rate, belonging to the technical field of electric power design. Background technique [0002] Thermal power units are a large energy consumer in my country, and their energy conservation and emission reduction are of great significance to my country's energy strategy. The efficiency of steam turbines in power stations mainly lies in the flow efficiency of the three cylinders of high, medium and low pressure cylinders, because improving the flow efficiency of steam turbines is a key project for energy-saving renovation of thermal power units. The most common way to improve flow efficiency is to improve flow efficiency. It is full-flow transformation and partial flow transformation. The full-flow transformation is the complete transformation of the high, medium and low pressure cylinders, and the partial flow transformation is ...

Claims

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Application Information

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IPC IPC(8): G06F30/17G06F119/08G06F119/14
CPCG06F30/17G06F2119/08G06F2119/14
Inventor 黄新长谭锐
Owner GUODIAN NANJING ELECTRIC POWER TEST RES CO LTD
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