Boiler anti-burning dry safe operation method

Abstract

The invention discloses a dry burning-resistant safe operation method of a boiler. The dry burning-resistant safe operation method comprises a normal operation method and an operation method during unexpected power cut; the operation method during the unexpected power cut comprises opening a first valve when a thermometer shows that temperature of a heating chamber is higher than 75 DEG C; opening a second valve and an emptying valve to enable water in a dry burning-resistant water tank to flow into the heating chamber, water and steam in the heating chamber to flow to a heat exchanger shell after flowing through a safety valve, and finally, flow into a water storage pond; working personnel performs the following two operations during the unexpected power cut: (1) observing the thermometer, and when the thermometer shows that water temperature of the heating chamber is lower than 50 DEG C, closing the second valve; and after the water temperature rises to 75 DEG C or above, opening the second valve again; (2) when a liquid level in the dry burning-resistant water tank is 1 / 3 lower than the height of the dry burning-resistant water tank, opening a third valve and the emptying valve to enable water in a water-replenishing tank to be injected into the dry burning-resistant water tank. The dry burning-resistant safe operation method disclosed by the invention is capable of preventing pressure in the boiler to be overhigh when the unexpected power cut occurs and preventing dry burning, and steam contamination cannot be generated to a working site.

Description

technical field [0001] The invention relates to the technical field of boiler safety production. Background technique [0002] With the development of economy and society, boilers have been widely used in society. Boilers heat cold water into steam or high temperature water. The hot water or steam generated in the boiler can be directly used in industrial production and people's daily life, and can also be converted into mechanical energy through a steam power device, or converted into electrical energy through a generator. Boilers that provide hot water are called hot water boilers, which are mainly used in daily life, and also have a small amount of application in industrial production. Boilers that generate steam are called steam boilers, often referred to simply as boilers, and are mostly used in thermal power stations, ships, locomotives, and industrial and mining enterprises. [0003] During the production process of the boiler, it is necessary to maintain the balan...

AI Technical Summary

Problems solved by technology

During the normal production process of the boiler, if there is an unexpected power failure, the water pump will stop running, but the combustion of the fuel will not stop synchronously, which will easily cause a large amount of water in the boiler to evaporate into water vapor, resulting in a sharp rise in pressure, or even risk of explosion

Even if there is no explosion, a large amount of steam will be released through the safety valve, bringing steam pollution to the working environment

In addition, after the boiler is burned dry, it no longer meets the requirements of safe production, causing the equipment to be scrapped

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