A method for testing the efficiency of condensate pumps
A technology for condensate pumps and efficiency testing, applied in pump testing, liquid displacement machinery, machines/engines, etc.
Active Publication Date: 2020-05-01
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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Problems solved by technology
However, there is no relevant literature or patent on the hydraulic test method to obtain the pump efficiency by measuring the flow rate, shaft power, lift and other parameters of the condensate pump.
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[0033] The technical solutions in the present invention are clearly and completely described below in combination with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0034] Taking the NLT200-360×5 condensate pump as an example, the liquid in the condenser is water. A method for testing the efficiency of a condensate pump provided by the present invention comprises the following steps:
[0035] (1) When the condensate pump 8 and its connected system are out of operation, the condenser vacuum gauge 7, the condenser water temperature gauge 6, the condensate pump outlet pressure gauge 9, the voltage-current converter 3, and the power measurin...
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The invention discloses a method for testing efficiency of a condensate pump and relates to the technical field of testing of thermal generator set auxiliary equipment. According to the method for testing efficiency of the condensate pump, the shaft power and lift of the condensate pump are obtained by measuring the vacuum value of a condenser, the water temperature of the condenser, the relativeheight difference of an instrument, the outlet pressure of the condensate pump, the volume flow of fluid in a pipe connected with the condensate pump, power parameters of a motor and the like, and thus the efficiency of the condensate pump is obtained. The increase of kinetic energy and pressure potential energy after the fluid flows through a pump body is converted into effective power of the condensate pump according to the energy conservation law in the process of converting the electric power of the motor for driving the condensate pump into the kinetic energy and pressure potential energyof the fluid, and the percentage of the ratio of the effective power to the shaft power of the condensate pump is the efficiency of the tested condensate pump. By testing the related running parameters of the condensate pump through the testing method and carrying out calculation, accurate efficiency of the condensate pump can be obtained.
Description
technical field [0001] The invention belongs to the technical field of testing auxiliary equipment of a thermal power generating set, and in particular relates to a method for testing the efficiency of a condensate pump. Background technique [0002] Both thermal power and nuclear power generation enterprises use condensate pumps to transport condensate to ensure the continuous and stable operation of the unit. The power consumption of condensate pumps is very high, and its efficiency directly affects the benefits of enterprises. Improving the efficiency of condensate pumps to save energy and increase efficiency has obvious practical significance. Accurate testing of condensate pump efficiency is necessary. [0003] However, there are no relevant documents or patents about the test method for obtaining pump efficiency. Li Chunxi, An Lianlian et al. introduced the research progress of measuring efficiency by thermodynamic method. They introduced the method of measuring pump ...
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IPC IPC(8): F04B51/00
CPCF04B51/00
Inventor 文立斌
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD