Method for testing injection coefficient of steam injector for industrial steam extraction

Abstract

The invention discloses a steam ejector injection coefficient testing method for industrial steam extraction. According to the method, a steam ejector serves as a unique external heat supply steam source for industrial steam extraction; a steam inlet of the steam ejector is connected with a steam pipeline; the steam pipeline comprises a power steam pipeline connected with a power steam inlet of the steam ejector and a suction steam pipeline connected with a suction steam inlet of the steam ejector, and the method comprises the following specific steps that A, the accuracy of a desuperheating water flow meter on the steam pipeline is judged; b, judging the accuracy of the desuperheating water flow on the steam pipeline, and eliminating the influence of an installation process on the test; and C, the injection coefficient of the steam injector is obtained by testing the flow of the power steam attemperation water on the power steam pipeline. The method is easy to implement, scientific in algorithm, more reasonable and reliable in result and more suitable for testing the injection coefficient when the temperature difference of the inlet and the outlet of the steam injector is small.

Description

Technical field [0001] The present invention relates to the technical field of steam injectors, and more particularly to a steam ejector injection coefficient test method for industrial string. Background technique [0002] With the application of the steam injector in the power-saving transformation of thermal power plants, the performance assessment of the steam ejector has become an important indicator of the remaining heat transformation of the relevant remaining pressure. [0003] For conventional heating strips, the steam ejector of the steam turbine exhaust, due to the injector power vapor, the steam turbine vapor and the mixed vapor enthalpy difference, the pressure temperature can be determined to determine its injection coefficient. The existing measurement instrument is highly accurate, and the measurement average value can be obtained in a certain period of time to obtain a relatively accurate steam ejector injection coefficient. [0004] In the process of industrial ...

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Problems solved by technology

The accuracy of the existing measuring instruments is relatively high, and the more accurate injection coefficient of the steam injector can be obtained by taking the average value of the measurement within a certain period of time according to the regulations

[0004] In the process of industrial steam extraction transformation, when the temperature difference between the inlet and outlet of the steam injector is small, the fluctuation of test parameters, the accuracy of the instrument, and the installation and cleanliness of the measuring sleeve have a significant impact on the injection coefficient, so that many There is still a large difference in the measurement results of the two experiments

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