Cleaning device used for cooling water system in converter valve

A technology for cooling water system and cleaning device, which is applied in the directions of cleaning hollow objects, cleaning methods and utensils, chemical instruments and methods, etc., can solve problems such as corrosion and scaling, and achieve low cleaning cost, good cleaning effect and high economy. Effect
CN103341472BActive Publication Date: 2015-01-28STATE GRID HUNAN ELECTRIC POWER +2
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
STATE GRID HUNAN ELECTRIC POWER
Publication Date
2015-01-28

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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.
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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...

Claims

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