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On-line monitoring method for concentration rate of circulating cooling water

A technology of circulating cooling water and concentration ratio, applied in the direction of material resistance, etc., can solve the problems of insufficient stability of selective electrodes, unsuitable for industrial applications, high price, etc., and achieve the effect of reasonable utilization, strong anti-pollution ability, and easy operation

Inactive Publication Date: 2007-07-11
BEIJING JIAOTONG UNIV
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Problems solved by technology

There are also Cl - Selective electrode online monitoring, but due to the poor quality of circulating water, this method has a serious problem of instrument drift, and the online Cl - Selective electrodes are not stable enough and need to be replaced frequently, and they are expensive and not suitable for industrial applications

Method used

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  • On-line monitoring method for concentration rate of circulating cooling water
  • On-line monitoring method for concentration rate of circulating cooling water
  • On-line monitoring method for concentration rate of circulating cooling water

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Embodiment Construction

[0033] The invention provides an online monitoring method for the concentration ratio of circulating cooling water in a thermal power plant, and accompanying drawing 1 is a schematic diagram of a measuring system for the method.

[0034]The process of this on-line monitoring method includes: through the two measuring loops of circulating cooling water and supplementary water, in the respective detection pools 2 and 3, use the conductivity electrode 4 and the temperature sensor 5 to measure the temperature after filtering through the pre-filter 1 respectively Conductivity and water temperature of circulating water and supplementary water, conductivity electrode cable 7 and temperature sensor cable 6 will transmit the corresponding electrical signal obtained to smart meter 8, and the temperature compensation of circulating water and supplementary water will be obtained by smart meter according to the following formula Conductivity value at 25°C reference temperature:

[0035] ...

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Abstract

The invention relates to the on line monitoring of the concentration multiple of the circulation cooling water of the heat power plant. It measures the conductivity ratio and water temperature of the circulating cooling water and compensation water, using temperature compensated circulating water by compensation water rate to replace the rate of CL density of the circulating water and that of the compensation water. It is accurate, reliable, with strong antipollution ability. It sets a good base for the automatic control of the circulation system to better save water resources.

Description

technical field [0001] The invention belongs to the technical field of industrial water saving, and in particular relates to an online monitoring method for the concentration ratio of circulating cooling water in a thermal power plant. Background technique [0002] Thermal power plants are industries with high water consumption, especially in the northern water-scarce areas. Water shortage is an unavoidable problem faced by thermal power plants. Among all water projects in thermal power plants, the consumption of circulating cooling water is the largest, so controlling the consumption of circulating cooling water is the key point to realize water saving. [0003] During the operation of circulating cooling water, there are evaporation loss, blowing loss (including leakage loss) and blowdown loss. If the operating conditions of the cooling water system are constant, the evaporation loss and blow-off loss (including leakage loss) are basically a fixed value. Therefore, the se...

Claims

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Application Information

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IPC IPC(8): G01N27/08
Inventor 李进安洪光许兆义崔连军赵哲军刘灵琴杜一立赵学明
Owner BEIJING JIAOTONG UNIV