CN2337400Y - Vertical chamber combustion boiler with ring catch box - Google Patents

Abstract

The utility model discloses a vertical chamber combustion boiler with a ring catch box. A plurality of threaded smoke tubes are arranged in a cylinder body, the upper and the lower cylinder body are an upper and a lower tube plates, the lower tube plate is welded and fixed with a plurality of water wall tubes and downtake tubes, the lower ends of the water wall tubes and the downtake tubes are welded, fixed and communicated with a ring catch box, and a combustion chamber is circled by the water wall tube, a fin sheet, a downtake tube, the ring catch box and the lower tube plate. The utility model has the advantages of reasonable design, simple structure, low cost and price, convenient installation and operation, and good technical performance.

Description

Band annular header vertical chamber combusting boiler

The utility model relates to a kind of oil-fired steam boiler.

The existing low capacity that uses and make (as≤1 ton/time) in the oil-fired steam boiler, roughly be divided into two big series, one is vertical internal combustion three backhaul oil burning boilers, it two is horizontal internal combustion three backhaul oil burning boilers.Vertical internal combustion three its structures of backhaul oil burning boiler are: boiler has a throat less chamber that places drum inside, combustor is installed in the boiler top, after flue gas fully burns in the combustion chamber, enter the second backhaul threaded flue bundle, turn to again and enter the 3rd backhaul fin heat transfer zone, the characteristics of this series boiler are compact conformations, the stock utilization height, but flowing resistance is big, combustion position is not good enough, simultaneously because the combustion chamber is built-in, structure is complicated, manufacture difficulty is big, combustor is installed in the top highest point, be not easy to install, use, inspection and maintenance, horizontal internal combustion three backhaul oil burning boilers are the same with above-mentioned vertical series, and boiler has a built-in throat less chamber, combustor is arranged in the boiler front end, the flue gas bottom horizontal flow sheet turns at the back smoke box to enter second backhaul threaded flue tube bank district, turns at front smoke box to enter the 3rd backhaul smoke pipe tube bank district again, this series boiler combustion is effective, but floor space is relatively large, because the combustion chamber is built-in, the cylindrical shell size is bigger, smoke pipe arranges and is restricted that the front and back smoke box is because of separating, insulation, seal request and make complicatedly and heavy.

The purpose of the utility model is intended to develop that a kind of drum size is little, stock utilization is high, simple in structure, easy to install, be convenient to keep in repair and inspection, floor space is little, exchange capability of heat is strong, steam quality is good band annular header vertical chamber combusting boiler.

Technical solution of the present utility model is: this band annular header vertical chamber combusting boiler is equipped with many vertical threaded flues in cylindrical shell, the two ends up and down of cylindrical shell are connected and fixed upper perforated plate respectively, lower perforated plate, the fixing many water screen tubes of lower perforated plate welding, many water screen tube inclination certain angles, and form a circle, water screen tube lower end and annular header welding are fixed and are connected, annular header is installed on the base ring, fixing between water screen tube and the water screen tube with the fin welding, in annular header one side down-comer is installed also, down-comer lower end and annular header welding are fixed and are connected, the down-comer upper end is fixing with the lower perforated plate welding, water screen tube, the upper end of down-comer all connects with cylinder lumen, water screen tube, fin, down-comer, the space that annular header and lower perforated plate surround jointly constitutes the combustion chamber, and combustor is installed in the combustion chamber side bottom.

The utility model is compared with prior art, and (1), combustion chamber placement have been dwindled the physical dimension of drum in the drum outside; (2), water screen tube can adopt the long boiler tube of 550-1200mm, makes full use of short size material; (3), saved and made complicated and heavy front and back smoke box, replace last smoke-box simple in structure and middle part smoke-box; (4), combustor is arranged in the boiler bottom, be convenient to install, use and check; (5), floor space is little, than lacking 2-3 with the horizontal boiler floor space of evaporation capacity doubly; (6), save material, cost price is low, lacks consumption material 15-20% than other boilers with evaporation capacity; (7), adopt threaded flue, exchange capability of heat improves greatly; (8), the position, headroom is furnished with the threaded flue that is heated, the quality better of steam.

Fig. 1 is the utility model structure longitudinal sectional view;

Fig. 2 is that the B-B of Fig. 1 is to view.

Below in conjunction with accompanying drawing the utility model is further described in detail.

Referring to Fig. 1, Fig. 2, Fig. 3, its structure of the utility model is: many vertical threaded flues 4 are installed in cylindrical shell 2,3, the two ends up and down of cylindrical shell 2 are connected and fixed upper perforated plate 1 and lower perforated plate 5 respectively, the fixing many water screen tubes 7 of lower perforated plate 5 welding, many water screen tube 7 inclination certain angles, and form a circle, water screen tube 7 lower ends and 10 fixedly connected connections of welding of annular header, annular header 10 is installed on the base ring 11, fixing between water screen tube 7 and the water screen tube 7 with fin 9 welding, in annular header 10 1 sides down-comer 6 is installed also, down-comer 6 lower ends and 10 fixedly connected connections of welding of annular header, down-comer 6 upper ends and lower perforated plate 5 welding are fixing, water screen tube 7, down-comer 6 upper ends all connect with cylindrical shell 2 inner chambers, water screen tube 7, fin 9, down-comer 6, the space that annular header 10 and lower perforated plate 5 surround jointly constitutes the combustion chamber, and combustor 8 is installed in the combustion chamber side bottom.

Water screen tube 7 is by the boiler tube manufacturing of Φ 57 * 3 or Φ 51 * 3, annular header 10 is bent by the boiler tube of Φ 89 * 5 or Φ 108 * 5 and forms, be welded to connect with fin 9 between the water screen tube 7, with augmentation of heat transfer and sealing, in order to guarantee good water circulation, be furnished with the down-comer 6 of Φ 63.5 * 3.5 or Φ 73 * 4 in a side of annular header 10, the inner surface that all must not surpass lower perforated plate 5 when install the upper end of down-comer 6 and water screen tube 7, in order to blowdown and cleaning, the flue gas flow direction of this boiler is: fuel oil is via combustor fully burning in the combustion chamber, flue gas is folded to the heat transfer zone that top of combustion chamber is made up of threaded flue 3 then, behind the flue gas parallel baffled threaded flue 3, enter the last smoke-box at boiler top, turn to the heat transfer zone of the second backhaul threaded flue, 4 formations that enter circumferential arrangement again at last smoke-box, come together in the middle part smoke-box at boiler middle part at last, discharge by chimney.

Claims (1)

1, a kind of band annular header vertical chamber combusting boiler, it is characterized in that in cylindrical shell (2), being equipped with many vertical threaded flues (4,3), the two ends up and down of cylindrical shell (2) are connected and fixed upper perforated plate (1) and lower perforated plate (5) respectively, the fixing many water screen tubes (7) of lower perforated plate (5) welding, many water screen tubes (7) inclination certain angle, and form a circle, the fixedly connected connection welded with annular header (10) in water screen tube (7) lower end, annular header (10) is installed on the base ring (11), fixing between water screen tube (7) and the water screen tube (7) with fin (9) welding, in annular header (10) one sides down-comer (6) is installed also, the fixedly connected connection welded with annular header (10) in down-comer (6) lower end, down-comer (6) upper end is fixing with lower perforated plate (5) welding, water screen tube (7), down-comer (6) upper end all connects with cylindrical shell (2) inner chamber, water screen tube (7), fin (9), down-comer (6), the space that annular header (10) and lower perforated plate (5) surround jointly constitutes the combustion chamber, and combustor (8) is installed in the combustion chamber side bottom.

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