Cleaning solution for indissolvable water scale in mining automobile engine cooling system

Abstract

The invention provides a cleaning solution for indissolvable water scale in a mining automobile engine cooling system. The cleaning solution is characterized by comprising following components by weight: 7.0-9.0% of sulphamic acid, 0.4-1.0% of thiourea, 0.02-0.35% of sodium nitrite, 0.05-0.1% of benzotriazole, 0.15-0.4% of a Lan-826 acid-washing corrosion inhibitor, 0.05-0.70% of urotropine, and 0.02-0.03% of polyethylene glycol 300, with the balance being deionized water. After cleaning with the cleaning solution, the fuel consumption amount can be largely reduced, the power property can be significantly improved, and the rate of fuel saving reaches 1-3%. The cleaning solution is re-used in mining automobile engines. The cleaning solution can clean indissolvable water scale in one time, is free of preparation on site, simple in operation, short in cleaning time, time saving, labor saving, green, and free of corrosion to metal and rubber in the cooling system, and protects systems. The cleaning solution and cooling liquids at present are compatible. The cleaning solution is low in cost and high in performance cost ratio.

Description

technical field [0001] The invention relates to an insoluble scale cleaning fluid for a mining vehicle engine cooling system. Background technique [0002] The cooling system of the diesel engine for mining vehicles is a special cylinder liner structure. It is a supercharged and intercooled high-strength heavy-duty engine. The average effective pressure of the engine is 1200-1500kPa, and the single-cylinder power can reach more than 100kW. As a result, the cooling system of a mining engine carries a much higher heat load than any other internal combustion engine. Due to the special structure of the cooling system, the tonnage of heavy-duty trucks in mines is large, and the heat load is large during engine operation. The cylinder liners are all wet-type cylinder liners, which is conducive to quickly dissipating heat and is also convenient for maintenance. The temperature of the cooling system in which the engine is in the most favorable working state is between 80 and 90°C. ...

AI Technical Summary

Problems solved by technology

[0016] (3) Engine oil, diesel oil, brake oil, gearbox hydraulic oil, etc. may invade the cooling system due to failure reasons such as cylinder gasket damage, maintenance reasons, or internal leakage, causing oil pollution in the cooling system

For mining vehicles, the cleaning technology of the engine cooling system is the most difficult, time-consuming and labor-intensive, the general method does not work, only chemical cleaning can be used, but the effect is not ideal, and there is serious corrosion on the metal of the cooling system

In recent years, with the development of chemical cleaning technology, some progress has been made in this area. However, due to the complex structure of the cooling system of mining vehicles and the great difference in corrosion resistance of materials, this type of cleaning liquid often cannot be cleaned in a targeted manner.

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