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A test platform for fouling and descaling of the equalizing electrode in the cooling water system of the converter valve

A technology of cold water system and voltage equalizing electrode, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of scaling and descaling test platform with single function, and achieve the effect of perfect function, ensuring test data and reasonable design

Active Publication Date: 2021-07-13
GUANGZHOU BUREAU CSG EHV POWER TRANSMISSION +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a scaling and descaling test platform for the equalizing electrode of the cooling water system in the converter valve, which solves the single function of the current scaling and descaling test platform of the cooling water system in the converter valve , the problem that only a single problem can be researched and tested

Method used

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  • A test platform for fouling and descaling of the equalizing electrode in the cooling water system of the converter valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: In this case, an experimental study was carried out on the influence of carbon dioxide on the fouling degree of the voltage equalizing electrode;

[0034] Before the test, the deionized water replenishment tank 10 was used to replenish the circulating water to the storage tank 1. After the replenishment, the second valve 11 was closed, the first valve 4 was opened, and the circulating water pump 3 was used to fill the various devices and pipelines with water. Deionized water with a conductivity lower than 0.5μS / cm should be used as supplementary water; the test is divided into two groups, and the gas cylinders are all closed during the first group of tests. Apply voltage, the descaling device 9 is in the non-working state and only plays the role of waterway conduction; turn on the micro pump 14, start the first set of fouling test; take out the voltage equalizing electrode 20 after the test is over, dry and weigh, microscopic Observation and other treatment; ...

Embodiment 2

[0035] Example 2: This case conducts experimental research on the influence of the operating parameters of the descaling device on the descaling effect;

[0036] The test is divided into several groups, and the control variable method is adopted, that is, in each group of tests, except for a certain specific operating parameter of the descaling device 9 (such as applied current density, voltage, etc.), all other operating parameters of the test platform are kept constant. Remain unchanged; the steps of each group of tests are all consistent: before the test starts, the deionized water replenishment tank 10 is used to supplement the circulating water to the water storage tank 1, after the replenishment, the second valve 11 is closed, the first valve 4 is opened, and the circulation is opened. The water pump 3 utilizes the circulating water pump 3 to make each device and the pipelines full of water, and the initial replenishment water should adopt deionized water with a conductiv...

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Abstract

The invention discloses a scaling and descaling test platform for a pressure equalizing electrode in a cooling water system in a converter valve. The reagent outlet, the reagent replenishment tank is used to provide chemical reagents for the water storage tank, the liquid outlet of the water storage tank is connected to the gas supply tank, and the gas supply tank is used to change the dissolved gas in the liquid transported by the water storage tank, the liquid outlet of the gas supply tank Connect the water quality parameter detection box, the water quality parameter detection box is used to detect the water quality parameters of the liquid flowing through the water quality detection box, the liquid outlet of the water quality parameter detection box is connected to the liquid inlet of the fouling pipe section, and the scaling pipe section is detachably connected with a piezoelectric pole, the liquid outlet of the fouling pipe section is connected to a descaling device, the descaling device is used to reduce the concentration of scale-causing particles in the liquid, and the liquid outlet of the descaling device is connected to the circuit liquid inlet of the water storage tank. The invention has perfect functions and can meet the requirements of scaling or descaling tests under different conditions.

Description

technical field [0001] The invention belongs to the technical field of direct current transmission, in particular to a scaling and descaling test platform for a pressure equalizing electrode in a cooling water system in a converter valve. Background technique [0002] The internal cooling water system is the most important auxiliary system in the HVDC converter valve, and its reliability is an important guarantee for the normal operation of the converter valve; and the problem that often occurs during operation is that the voltage equalizing electrodes installed on the pipeline will appear different The degree of fouling and waterway blockage caused by scale shedding will affect the cooling capacity of the internal cooling water system, which in turn will pose a hidden danger to the safe operation of the converter valve. At present, the common solution to the scaling problem of equalizing electrodes is to conduct regular inspections and manually scrape off the deposits on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
CPCG01N33/00
Inventor 梁秉岗张朝辉江一张文梁家豪王晨涛林康照王盛霖赵瑞雪刘学忠王晨星王行飞
Owner GUANGZHOU BUREAU CSG EHV POWER TRANSMISSION
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