Method for measuring efficiency of independent condensing steam-driven water supply pump

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., and can solve the problems of different and large differences in the accuracy of measuring instruments

Active Publication Date: 2021-02-02
XIAN XIRE ENERGY SAVING TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Even under the same efficiency accuracy, the accuracy of measuring instruments req

Method used

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  • Method for measuring efficiency of independent condensing steam-driven water supply pump

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Embodiment Construction

[0030] The preferred implementation examples of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0031] Implementation example 1

[0032] Such as figure 1 As shown, the present invention is a method for measuring the efficiency of an independent condensing type steam-driven feedwater pump. The system based on the method includes a condenser 6, and a small steam turbine 3 and a steam-driven feedwater pump 17 coaxially arranged; wherein the small steam turbine The steam inlet pipe 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, and the steam exhaust port of the small steam turbine 3 is connected to the steam inlet of the condenser 6, and t...

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Abstract

The invention provides a method for measuring the efficiency of an independent condensing steam-driven water supply pump. The method comprises a steam-driven water supply pump, a small steam turbine,a condenser, a temperature measuring point, a pressure measuring point, a flow measuring point and the like. The steam-driven water supply pump, the small steam turbine and the condenser are integrally researched, the shaft power of the steam-driven water supply pump is calculated based on a thermodynamic method, and the efficiency of the steam-driven water supply pump is further obtained. Parameters needing to be measured are few, the measuring cost is low, the influence of measuring errors on results is small, and only the flow, pressure and temperature of an inlet of the steam-driven watersupply pump, the pressure and temperature of an outlet of the steam-driven water supply pump, the steam inlet pressure and temperature of the small steam turbine, the water inlet pressure, temperatureand flow of circulating water of the condenser, the water outlet pressure and temperature of circulating water of the condenser and the temperature, pressure and flow of hot well condensed water needto be measured. Therefore, the performance of the independent condensing steam-driven water supply pump is comprehensively known, a reliable basis is provided for guiding economic and safe operationof the steam-driven water supply pump, and reasonable suggestions and improvement directions are provided for future economic operation.

Description

technical field [0001] The invention belongs to the field of power plant boilers and steam turbine systems, and in particular relates to a method for measuring the efficiency of an independent condensing steam-driven feedwater 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 consumption equipment of each power generation unit. With the gradual increase of the single unit power of thermal power units, more and more units adopt the way of small steam turbines driving feed water pumps in order to reduce the power consumption rate of the plant and increase the power supply to the grid. Therefore, it is of great significance to fully understand the operating performance indicators of steam-driven feedwater pumps to guide the economical and safe operation of power plants. [0003] In terms of efficiency detection of independent condensing steam-driven feed water pumps, DL / T839-200...

Claims

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Application Information

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IPC IPC(8): F04D15/00F01D15/08F01D21/00F01K11/02
CPCF04D15/0088F01D15/08F01D21/003F01K11/02Y02P80/15
Inventor 荆涛邓佳许朋江马汀山韩立
Owner XIAN XIRE ENERGY SAVING TECH
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