1. Boiler water scales Suspended solids, colloids and inorganic salts will precipitate and form when they are heated or exceed their saturation concentration, forming sludge, scale, which will greatly affect the boiler's heat transfer efficiency, pot water circulation, fuel waste, and heating surface damage. , Boiler output decreased, increased cleaning. Increase the amount of washing. It was determined that 1 mm thick scale was formed and 10% of the fuel was wasted. A steam boiler of 10 kgf/cm2 was used and the wall temperature was 280 when no scale was run. C. After 1 mm thick silicate scale is formed, the wall temperature rises to 680 due to the increase in thermal resistance. C. At this time, the strength of the steel plate was reduced from 40 kgf/cm2 to 10 kgf/cm2, resulting in a drop in boiler pressure, cracking, bulging, and even blowout of the furnace wall. Severe fouling can block boiler tubes, waterways, causing shutdowns, boiler explosions, and other serious accidents. Stopping furnaces can also cause freezing of production equipment and heating equipment. When chemical cleaning removes scale, improper pickling or pickling frequently affects the life of the boiler and pollutes the environment.
Second, poor corrosion of boiler water quality caused by metal corrosion, resulting in the destruction of metal components of boilers, metal corrosion products form new structural materials, and produce corrosion under the scale, more accelerated the damage of metal components.
Third, the phenomenon that the water droplets in the drum of the soda steam boiler in the boiler is taken away by a large amount of steam is called soda leaching. One of the reasons for this is that the water contains many impurities such as nacl2, sodium phosphate, silicide, and organic substances. The co-generation of steam will cause serious pollution of the steam, excessive salt accumulation in the superheater tube and steam flow tube, blockage of the pipeline in severe cases, steam temperature drop, water hammer and corrosion cracking.
Fourth, the boiler material caustic embrittlement It refers to low carbon steel, alloy steel and stainless steel in the tensile stress exceeds the yield point, while in contact with concentrated caustic soda solution, the resulting irregular serious damage - explosion.
From the above we can see that the harm of poor water quality is very serious. In units that do not attach importance to water treatment work, the boilers are often in good condition for one year, two years, and three years. : This will not only result in huge economic losses, but will also result in major safety accidents such as suspension of production and explosion. However, the hazards of poor water quality are often a process of accumulation that takes a certain amount of time to discover. However, once the aforementioned hazards are discovered, it is already difficult to restore the situation and losses, and relevant leaders and management personnel must not take it lightly.
HSY type Electric Hoist is a small light Lifting Equipment. Its lifting range ranges from 500kg to 25 tons according to customer requirements.
The electric hoist can be divided into hoist type chain crane, chain hoist with manual trolley, chain hoist with electric car, Low Headroom Chain Hoist.
Widely used for lifting, loading and unloading, repair equipment, lifting cargo.
It is installed on suspended I-beam, curved track, cantilever crane rail and fixed lifting hoisting.
Technical parameter
Mode
HSY0.5
HSY1
HSY1.5
HSY2
HSY2.5
HSY3
HSY5
HSY10
HSY15
HSY20
HSY25
Rated Capacity
(t)
0.5
1
1.5
2
2.5
3
5
10
15
20
25
Lifting Speed
(m/min)
7.8
6.8
6.8
6.6
6.8
5.8
2.8
2.7
1.8
1.4
1.1
Motor Power
(kw)
0.8
1.5
3.0
3.0
3.0
3.0
3.0
3.0*2
3.0*2
3.0*2
3.0*2
Ratation Rate
(r/min)
1440
Insulation Grade
F
Power Source
3P 380V 50Hz
Control Voltage
24V/36V/48V
Chain Turns
1
1
1
1
1
1
2
4
6
8
10
Dead Weight
(kg)
47
61
108
115
115
122
151
300
382
482
503
Detailed image
Electric Chain Hoist,Electric Chain Hoist 110V,Coffing Electric Chain Hoist,Cm Electric Chain Hoist
Jiangxi Mide Industrial Co., Ltd. , https://www.midecrane.com