Cleaning device used for cooling water system in converter valve

Abstract

The invention discloses a cleaning device used for a cooling water system in a converter valve. The device comprises a cleaning box (1), water pumps (2), a nitrogen cylinder (5), a stirrer (13) and a heater (14), wherein the number of the water pumps (2) is at least two, and the water pumps are respectively connected with a check valve (3). The two check valves (3) are connected with a recirculating valve (7), a first pressure meter (4), a relief valve (6), a first valve (8) and a second valve (9) in parallel. The other end of the recirculating valve (7) is inserted into the cleaning box (1); the other end of the first valve (8) is connected with a fourth valve (11) in series; the other end of the second valve (9) is connected with a third valve (10) in series. The device can clean the cooling water system in the super / extra high voltage converter valve regularly on the premise that safe operation is not affected, and has the advantages that gas-water-combined cleaning and pulse cleaning can be performed, cleaning conditions can be controlled conveniently, and the device is safe and easy to operate, good in effect and low in cost.

Description

technical field [0001] The invention belongs to the field of high-voltage electricity transmission, and in particular relates to a cleaning device for cooling water systems in converter valves suitable for super / ultra-high voltage converter stations. Background technique [0002] Ultra / UHV DC transmission has the characteristics of long transmission distance, large transmission capacity, flexible control and low energy consumption. According to the data provided by the State Grid Corporation of China, the primary circuit EHV / UHV DC power grid can deliver 6 million kilowatts of electricity, which is equivalent to five to six times the power transmitted by the existing 500 kV DC power grid. Moreover, the power transmission distance of the former is two to three times that of the latter, so the power transmission efficiency is greatly improved. According to the calculations of the State Grid Corporation of China, if the EHV / UHV line is used to transmit the above-mentioned powe...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to effectively eliminate the serious corrosion and fouling problem of the cooling water system in the converter valve of the ultra / ultra-high voltage converter station, its solution and the defects of the corresponding facilities. potential safety hazards, and the possible threats and harms to the EHV / UHV DC transmission system, a cleaning device for the cooling water system in the converter valve is provided. The cleaning condition can be conveniently controlled by using the device, and it is especially suitable for the The cooling water system in the converter valve of the ultra / ultra-high voltage converter station is cleaned regularly to improve the safe and stable operation quality of the converter station without any negative impact

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