During the use of the diesel generator set, some scale will be generated in the water tank of the diesel engine. If there is too much scale in the water tank of the oil generator, the sundries will block the water tank, and it is easy to ignite incorrectly, which will lead to the overheating of the generator and the decrease of thermal conductivity, which will directly affect the heat dissipation effect, thus reducing the service life of the diesel generator set. Therefore, we should remove these scale in time. How did these scale come from?

柴油机发电机组冷却系统在使用过程中冷却液会有一定的损失，需要及时向冷却系统加水。有些用户不是加冷却液或蒸馏水，而是直接加入硬水，结果硬水中的钙、镁离子很容易与普通冷却液中的无机盐成分形成水垢。

There will be a certain loss of coolant in the cooling system of diesel generator set during use, so it is necessary to add water to the cooling system in time. Some users do not add coolant or distilled water, but directly add hard water. As a result, calcium and magnesium ions in hard water can easily form scale with inorganic salts in ordinary coolant.

而硅胶垢主要来源于无机型冷却液中的硅酸盐。金属垢主要以铁垢和焊锡垢为主。前者主要是由普通无机型冷却液中的无机盐与缸体上的铁金属反应生成的保护膜因消耗脱落形成，而后者是由具有强氧化性的无机盐腐蚀抑制剂加剧焊锡“开花”而形成的蓬松沉淀物。所以，如果冷却系统需要加水，不能直接加自来水而是需要用冷却液或者蒸馏水。

Silica gel scale mainly comes from silicate in non model coolant. Metal scale is mainly iron scale and solder scale. The former is mainly formed by the protective film formed by the reaction between the inorganic salt in the ordinary non model coolant and the iron metal on the cylinder block due to consumption, while the latter is a fluffy sediment formed by the "flowering" of solder exacerbated by the strong oxidizing inorganic salt corrosion inhibitor. Therefore, if water needs to be added to the cooling system, tap water cannot be added directly, but coolant or distilled water needs to be used.

产生水垢后有以下两种方法可清理。

There are two ways to clean the scale after it is generated.

一、用酸碱清洗剂清除。用30 公斤水，2.5公斤苛性钠，0.6公斤煤油配成清洗液，倒入水箱中。然后启动柴油机，中速运行10分钟左右后熄火。待10至12小时后再重新启动柴油机，中速运转10分钟左右熄火，放出清洁液。加入清洁的冷却水后起动柴油机，中速运行自行清洁。如此反复2至3次，即可将水垢彻底清除干净。

1、 Remove with acid-base cleaning agent. First, 30 kg of water, 2.5 kg of caustic soda and 0.6 kg of kerosene are used to prepare the cleaning solution and pour it into the water tank. Then start the diesel engine, run at medium speed for about 10 minutes and then shut down. Restart the diesel engine after 10 to 12 hours, run at medium speed for about 10 minutes, turn off the engine and discharge the cleaning fluid. After adding clean cooling water, start the diesel engine and run at medium speed for self-cleaning. Repeat this for 2 to 3 times to completely remove the scale.

二、用压力水冲洗。放出冷却水箱的冷却水，拆下散热器进出水管，气缸盖出水管，节温器，然后装回气缸出水管，用压力不超过3kgf/cm2的清水从气缸盖出水管灌进，冲洗水套，将积垢排除，直到水泵流出的水不浑浊为止，从散热器出水管处将水冲入，排除水垢，直到加水口流出不浑浊的水为止。

2、 Flush with pressure water. Drain the cooling water from the cooling water tank, remove the inlet and outlet pipes of the radiator, the outlet pipes of the cylinder head and the thermostat, and then reinstall the outlet pipes of the cylinder head. Fill the outlet pipes of the cylinder head with clean water with a pressure of no more than 3kgf / cm2, wash the water jacket, and remove the scale until the water from the water pump is not turbid. Flush the water from the outlet pipes of the radiator to remove the scale until the water from the water inlet is not turbid.

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