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A Method for Uncertainty Control of Steam Turbine Thermal Performance Test

A technology of thermal performance test and control method, which is applied to mechanical equipment, engine components, machines/engines, etc., can solve the problems of increasing time uncertainty components, and achieve the effect of avoiding test invalidation

Active Publication Date: 2022-04-12
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This causes the time uncertainty component in the uncertainty of test results to be significantly increased due to the deviation and fluctuation of one or more parameters.

Method used

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  • A Method for Uncertainty Control of Steam Turbine Thermal Performance Test
  • A Method for Uncertainty Control of Steam Turbine Thermal Performance Test
  • A Method for Uncertainty Control of Steam Turbine Thermal Performance Test

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Embodiment Construction

[0031] A method for controlling the uncertainty of a steam turbine thermal performance test of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples.

[0032] like figure 1 As shown, a kind of steam turbine thermal performance test uncertainty control method provided by the present invention comprises the following steps:

[0033] 1. Collect the test instruments, number of instruments, accuracy grades and calibration reports used for the main measurement parameters in the thermal performance test of the steam turbine. Parameters that need to be tested with calibrated instruments include: main steam pressure, main steam temperature, high pressure cylinder exhaust pressure, high pressure cylinder exhaust temperature, hot reheat steam pressure, hot reheat steam temperature, final feed water temperature, final stage Heater inlet water temperature, feed water pump outlet temperature, deaerator outlet water temper...

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Abstract

The invention discloses a method for controlling the uncertainty of a steam turbine thermal performance test. Certainty U i And the sensitivity coefficient c of the heat rate test results, the calculation of the overall uncertainty U of the heat rate of the steam turbine thermal performance test t1 ~ U ti ; d. Fitting the change curve of the overall uncertainty of the heat rate of the steam turbine thermal performance test with time f n (t); e, calculate f n (t) and the difference function ε of the predetermined experimental uncertainty θ n (t) result; e, for difference function ε n (t) and the test execution time T to judge whether the test can be ended; f. If the end condition is not met, give the test duration that needs to be continued to reach the predetermined test uncertainty test. The invention can effectively control the time uncertainty of the test result of the thermal performance test of the steam turbine, and can be used to guide the performance test of the steam turbine.

Description

technical field [0001] The invention belongs to the field of thermal performance tests of generator sets, in particular to a method for controlling the uncertainty of steam turbine thermal performance tests. Background technique [0002] According to the steam turbine equipment procurement contracts and technical agreements of most new generating units of power generation enterprises, the uncertainty of the test results of the steam turbine thermal performance test should meet the binding requirements of the commercial contract. In order to meet this requirement, most steam turbine performance assessment tests are carried out in accordance with ASME PTC6 "Steam Turbine Performance Test Regulations", that is, instruments and meters that meet the requirements of the test regulations are used, and the procedures required by the test are carried out. However, in the specific test process, in addition to the influence of measuring instruments and instruments, the instability of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D21/00
CPCF01D21/003
Inventor 薛志恒何欣欣陈会勇王伟锋裴东升张朋飞邢乐强吴涛
Owner XIAN THERMAL POWER RES INST CO LTD