A method for measuring the efficiency of an independent condensing steam-driven feed pump
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A technique of steam-driven feedwater pump and measurement method, which is applied in the direction of non-variable pump, pump control, steam engine device, etc., which can solve the problems of different accuracy and large difference of measuring instruments, and achieve the effect of low measurement cost and few parameters
Active Publication Date: 2022-07-08
XIAN XIRE ENERGY SAVING TECH +1
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Even under the same efficiency accuracy, the accuracy of measuring instruments required for different test occasions is also different, sometimes even very different
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[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.
[0031] Implementation Example 1
[0032] like figure 1 As shown, the present invention is a method for measuring the efficiency of an independent condensing steam-driven feed water pump. The system based on the method includes a condenser 6, a small steam turbine 3 and a steam-driven feed water pump 17 arranged coaxially; wherein, the small steam turbine The steam inlet pipeline of 3 is provided with a small steam turbine inlet steam pressure transmitter 1 and a small steam turbine inlet steam temperature measuring element 2. The steam exhaust port of the small steam turbine 3 is connected to the steam inlet of the condenser 6, and the small steam turbine 3 is connected to the s...
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Abstract
A method for measuring the efficiency of an independent condensing steam-driven feed pump includes a steam-driven feed pump, a small steam turbine, a condenser, a temperature measurement point, a pressure measurement point, a flow measurement point, and the like. The invention studies the steam-driven feed water pump, the small steam turbine and the condenser as a whole, calculates the shaft power of the steam-driven feed water pump based on the thermodynamic method, and then obtains the efficiency of the steam-driven feed water pump. There are few parameters to be measured, the measurement cost is low, and the measurement error has little impact on the results. Only need to measure: the inlet flow, pressure, and temperature of the steam-powered feed pump, the outlet pressure and temperature of the steam-powered feed pump, and the inlet steam pressure of the small steam turbine. , temperature, condenser circulating water inlet pressure, temperature, flow, condenser circulating water outlet pressure, temperature, hot well condensate temperature, pressure, flow. In order to fully understand the performance of the independent condensing steam-driven feed pump, provide a reliable basis for guiding the economical and safe operation of the steam-driven feed pump, and put forward reasonable suggestions and improvement directions for future economic operation.
Description
technical field [0001] The invention belongs to the field of power station boilers and steam turbine systems, and particularly relates to a method for measuring the efficiency of an independent condensing steam-driven feed water pump. Background technique [0002] The boiler feed water pump is an important auxiliary machine of the generator set, and it is also the main energy-consuming equipment for the power consumption of each power generation unit. With the gradual increase of the single-unit power of thermal power units, more and more units use the small steam turbine to drive the feed water pump, so as to reduce the power consumption rate of the plant and increase the power supply to the grid. Therefore, a comprehensive understanding of the operating performance indicators of the steam-driven feed pump is of great significance for guiding the economic and safe operation of the power plant. [0003] In terms of efficiency detection of independent condensing steam-driven...
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