Method for controlling uncertainty of thermal performance test of steam turbine
A thermal performance test and control method technology, which is applied to mechanical equipment, engine components, machines/engines, etc., can solve problems such as the increase of time uncertainty components, and achieve the effect of avoiding test invalidation
Active Publication Date: 2019-11-19
XIAN THERMAL POWER RES INST CO LTD
View PDF5 Cites 1 Cited by
- 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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
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...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for controlling the uncertainty of the thermal performance test of a steam turbine. The method includes the steps that a, the instrument number and precision or checkreports used by main measurement parameters of the thermal performance test of the steam turbine are collected; b, the instrument measurement uncertainty Ui of all the measurement parameters and the sensitivity coefficient c of the heat rate test result are calculated; c, the heat rate overall uncertainty Ut1-Uti of the thermal performance test of the steam turbine is calculated; d, the change curve fn(t) of the heat rate overall uncertainty of the thermal performance test of the steam turbine along with time is fit; e, the difference function epsilon n(t) result of fn(t) and the preset test uncertainty theta is calculated; f, the difference function epsilon n(t) and the test time T are judged, and whether the test can be over or not is verified; and g, if end conditions are not met, the test duration for which the preset test uncertainty test needs to continue to be carried out is given. The time uncertainty of the test result of the thermal performance test of the steam turbine can be effectively controlled, and the method can be used for guiding 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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(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