chinese steam boiler for sale

chinese steam boiler for sale

4, the shutdown operation

Turn off the main gas supply valve to stop gas supply, then circulating pumps and pump continues running water, when the boiler water temperature dropped to 70 or less, or about 4-6h stop after stop circulating pump and supply pump operation.

Generally speaking, the scale in hot water boiler is mainly as follows: 1. Carbonate scale: its main component is calcium and magnesium carbonate, but mainly calcium carbonate, its color is usually white, its place of production, mainly in some of the lower temperature parts. Saltwater sulfate: its main composition is calcium sulfate, is relatively hard and dense, the color is white or yellow, its occurrence, mainly on the higher temperature and evaporation strength on the evaporation surface. 3. Saltwater silicate scale: its composition is relatively complex, silica, etc., its texture is very hard, the color is gray white, mainly appear in the pot On the heatmost part of the furnace. 4. Mixed scale: a mixture of the above-mentioned scales and rusts in a variety of colors and in a multi-layered shape and its appearance is not fixed.

Heating and hot water boilers are mainly two uses hot water bath boiler fuel using steam turbine power conditioning subsystem - Frequency electrohydraulic control system similar to the feedforward - feedback cascade control system. Master regulator proportional regulator, the steam turbine power - frequency electro-hydraulic control system of a frequency corresponding to a difference amplifier which corresponds to droop ratio with the steam turbine, the size represents the size of the hot water boiler with a load capacity, proportional band the larger, the more hot water boiler with a load capacity; the sub-controller uses proportional-integral regulator, the steam turbine power - the power conditioner frequency electro-hydraulic control system corresponding to; the amount of fuel introduced into the feedback signal, and the steam turbine power - frequency turbine electrohydraulic control system incorporated in the pressure signal corresponding to a first stage, which is rapid elimination of the hot water boiler fuel quantity spontaneous disturbance. There are heating and hot water boiler bath for two purposes. Hot water boiler by circulating hot water circulation pump hot water holding tank, the tank hot water heating cycle can be achieved bath object; hot water boiler by circulating hot water circulation pump heating conduit, through the heat sink (radiator) people can achieve heating requirements; hot water boiler and hot water circulating pump with heat exchanger can be achieved bathing and heating dual function. Water speed before the hot water boiler should not start too fast, usually in winter no less than 4h, the other seasons 2 ~ 3h, especially in the beginning of the water should be slow. Hot water boiler water temperature is generally 50-90 ℃, so that the temperature difference between the feedwater entering the drum drum wall temperature is not more than 40 ℃. Not completely cooled gas hot water boiler, water temperature, mutatis mutandis, the drum wall temperature, or should slow down the speed of the water. When feed water enters the drum, the first wall half always in contact with the drum, when the feed water temperature and drum wall temperature difference is too large, the influent fast speed, upper and lower walls of the drum, the inner and outer wall will have a greater expansion difference, resulting in a large drum to additional stress, causing deformation of the drum, when severe cracks. Since the thick-walled drum, slow expansion, the wall of the tube is connected to the drum wall is thin, expanded rapidly. When the gas hot water boiler water temperature is too high or too fast, uneven expansion will cause the weld cracks, damage to the gas hot water boiler.

Fangkuai Boiler is based on low-nitrogen energy-saving and environmental protection. It focuses on the development trend and uses universal excellent technology, products and services. According to such a method, it is now applicable to the development of society around the world, promotes cutting-edge work in the future manufacturing industry, and maintains the ideal use of customers in various industries.

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