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Special pH measurement device for electric generator inner cooling water system and working method thereof

A technology of cold water system and measuring device, which is applied in the direction of material resistance, etc., can solve problems such as interference, and achieve the effect of ensuring the operation cycle, ensuring the accuracy, and ensuring the accuracy of the measurement

Pending Publication Date: 2020-02-18
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve this problem of interfering with field operation, it is urgent to solve the problem of accurate pH measurement of quasi-internal cooling water

Method used

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  • Special pH measurement device for electric generator inner cooling water system and working method thereof
  • Special pH measurement device for electric generator inner cooling water system and working method thereof
  • Special pH measurement device for electric generator inner cooling water system and working method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see figure 2 , the special pH measurement device for the internal cooling water system of the generator in this embodiment includes a flow meter 2, a conductivity flow cell 3, a hydrogen conductivity flow cell 4, a degassed hydrogen conductivity flow cell 5, a flow regulating valve 6, a multi-channel Conductivity meter 7, PLC control panel 8, color-changing cation exchange column 12, carbon dioxide remover 13 and electric regenerative cation exchanger 14, flow regulating valve 6 and flow meter 2 are installed in the water outlet pipe drawn from the inner cooling water cooler of the generator On the sampling pipeline, and flow regulating valve 6 and flow meter 2, conductivity flow cell 3, electric regeneration cation exchanger 14, color-changing cation exchange column 12, hydrogen conductivity flow cell 4, carbon dioxide remover 13 and degassed hydrogen The conductivity flow cell 5 is connected sequentially according to the water flow direction, and the degassed hydroge...

Embodiment 2

[0034] see figure 1, The special pH measuring device for the inner cooling water system of the generator is installed at the outlet of the cooler of the inner cooling water system of the generator to ensure that the temperature of the water sample will not be too high. The pH measuring device is connected in series with the internal cooling water sampling pipeline through the three-way valve 1, and the measured water samples are returned to the inlet of the exchanger or directly to the internal cooling water tank. When sampling, the flow rate of the water sample in the measurement pipeline will decrease for a short time, and the impact on the measurement can be ignored.

[0035] see figure 2 , the special pH measurement device for the inner cooling water system of the generator consists of a three-way valve 1, a flow meter 2, a conductivity flow cell 3, a hydrogen conductivity flow cell 4, a degassed hydrogen conductivity flow cell 5, a flow regulating valve 6, and a multi-c...

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Abstract

The invention discloses a special pH measurement device for an electric generator inner cooling water system and a working method thereof. The device comprises a flowmeter, a conductivity flow cell, ahydrogen conductivity flow cell, a degassed hydrogen conductivity flow cell, a flow regulation valve, a multi-channel conductivity table, a PLC control panel, a color-changing cation exchange column,a carbon dioxide remover and an electric regeneration cation exchanger, wherein the flow regulation valve and the flowmeter are mounted on a sampling pipeline which is led out from a water outlet pipeline of the electric generator inner cooling water cooler, moreover, the flow regulation valve and the flowmeter, the conductivity flow cell, the electric regeneration cation exchanger, the color-changing cation exchange column, the hydrogen conductivity flow cell, the carbon dioxide remover and the degassed hydrogen conductivity flow cell are connected orderly according to a water flowing direction; the conductivity flow cell, the hydrogen conductivity flow cell and the degassed hydrogen conductivity flow cell are respectively connected with the multi-channel conductivity table, and the multi-channel conductivity table is connected with the PLC control panel. The device and the method provided by the invention have wide range of application, and can be used for both a stator cooling water system and a double-water inner cooling system.

Description

technical field [0001] The invention relates to the technical field of water quality monitoring in power plants, in particular to a pH measuring device for inner cooling water of a generator. Background technique [0002] The internal cooling water system of the generator plays a vital role in the safe operation of the generator. The internal cooling water plays the role of cooling and insulation in the stator bar at the same time, which can effectively prevent accidents caused by overheating or short circuit of the generator. During the operation of large turbogenerators, the conductivity and pH value of the internal cooling water should be continuously measured online, and the copper content, internal cooling water flow, ammonia content, and hardness should be measured regularly. According to the current chemical detection methods, the online monitoring of the conductivity of the internal cooling water can be well realized, and the copper content, ammonia content, and hard...

Claims

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Application Information

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IPC IPC(8): G01N27/06
CPCG01N27/06
Inventor 李海洋邓宇强程家庆祁东东王冬梅冀雪妮
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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