According to the evaporation capacity

According to the evaporation capacity size classification, boiler can be small, medium and large.
2. Classified by steam pressure high and low, with low pressure, medium pressure and high pressure, ultra-high pressure, subcritical pressure, pressure of supercritical and ultra supercritical pressure boilers, etc.
3. According to the water cycle mode classification, natural circulation, forced circulation boiler, boiler once-through boiler, the compound circulation boiler, etc.
4. According to the combustion mode classification: fire, fire bed room, cyclone, fluidized bed combustion boiler, etc.
5. By using different classification, there was hot water boilers, industrial boilers, Marine and locomotive boiler and power station boiler, etc.
(2) main equipment power plant boiler system
1. The present domestic conventional power plant unit capacity is commonly 300 to 1000 megawatts of boiler capacity is commonly 1000 to 3100 tonnes per hour. Large capacity and high parameters, high thermal efficiency of 600 mw supercritical 1000 mw ultra supercritical boiler is the new tendency of the development of the power plant unit in China.
2. Power plant boiler system is the main equipment equipment by boiler and boiler auxiliary equipment of two parts. Boiler body including furnace, the burner, drum, or steam separator, water wall, superheater, reheater, economizer, air preheater, the flue, architecture and furnace wall and other main components; Wind equipment and boiler auxiliary equipment including send to coal pulverizing equipment, blowing equipment, ash slag discharge device, etc.
Second, the power plant boiler installation technology points of the main equipment Power plant boiler due to the large capacity and high steam parameters of boiler, boiler equipment volume and weight is big, the boiler body to install at the scene combination, including the boiler steam drum, heating surface of ontology, the tail heating surface, the installation of combustion equipment and its accessory equipment of ontology and parts manufacturing.
(a) power plant boiler installation general procedure
1, the counting of equipment inspection and acceptance;
2, basic acceptance;
3, basic alignment;
4, equipment handling and lifting;
5, the installation of the steel frame and ladder platform;
6, drum installation;
7, the installation of boiler heating surface of ontology;
8, the installation of the heating surface at the rear;
9, combustion equipment installation;
10 and ancillary equipment installation;
11, thermal instrumentation protection device installation;
12, single machine running in;
13, alarm and interlock test;
14, water pressure test;
15, the boiler hot commissioning and test run.
1 P136
(2) boiler duiring the main technical points
1. The composition of boiler steel frame and connection mode. Boiler steel frame is supporting framework of furnace body, and the whole steel structure, bearing the weight of heating surface, the weight of the furnace wall and furnace accessories, and determine the appearance of the furnace. Its main supported by columns, beams, horizontal, vertical and inclined support, platforms, escalators, roof, etc. There are two kinds of connection mode of the steel structure: welding and high strength bolt connection.
2. Boiler steel frame installation characteristics. Boiler steel frame installation characteristics mainly include: component diversification, open operation, construction environment is relatively fixed, the intensity of labor is big, the work high above the more, and so on.
3. The boiler steel frame installation program.
(1) the basic line;
(2) column soleplate installation, alignment,
(3) column, vertical support, horizontal beam, horizontal installation;
(4) the overall alignment;
(5) high strength bolt end tight;
(6) platforms, escalators, railings installation, etc.。