CN2212748Y - Continuous briquette back-fire heat-pipe transfer boiler - Google Patents

Abstract

The utility model discloses a continuous briquette back-fire heat-pipe transfer boiler. The utility model improves the defects of low combustion efficiency and high exhaust gas temperature of a miniature boiler. The utility model is characterized in that a continuous briquette back-fire device composed of a screw conveyor, a briquette die plate and air distributing pipes can burn fuel in high efficiency. After passing through three return heat-transfer actions of a combustion chamber, residual heat enters a smoke box along with smoke and flows through eight return heat pipe rows, and then the residual heat passes through heat pipes for heat transferring in high efficiency. The exhaust gas temperature is controlled below 180DEG C. In addition, the utility model provides the society a new boiler with the advantages of high heat efficiency, small size, easy operation and maintenance, energy-saving and economic cost.

Description

Continuous briquette back-fire heat-pipe transfer boiler

The utility model is steam (or hot water) boiler that is applied to heating, heat supply.

(refer to evaporation capacity≤2T/H) or atmospheric steam, hot water boiler for domestic, exist the thermal efficiency low, steel consumption is big, repair and maintenance inconvenience, shortcoming such as service life is short for existing miniature boiler.

Task of the present utility model is that a kind of continuous moulded coal back fire device will be provided, and makes the coal overheavy firing heat release fully fast that enters burner hearth; The outside flue of burner hearth is arranged heat pipe row,, in Lu Shui exhaust gas temperature is controlled at below 180 ℃ through the heat pipe efficient heat transfer, thereby obtains a kind of thermal efficiency height, and volume is little, and steel consumption is low, and repair and maintenance is convenient, and the life-span is long, the New-type boiler of energy saving economy.

Task of the present utility model is finished as follows: boiler bottom is provided with the coal supply shaped device, promptly form by conveying worm, briquette molding plate, wind-distributing pipe, the wet coal of handling well is from the pressurization of coal bunker input screw machine, through the briquette molding plate, make moulded coal and send into burner hearth, be provided with wind-distributing pipe above the profiled sheeting, wind-distributing pipe is air feed in the moulded coal hole, assists moulded coal drying, curing combustion.Boiler furnace divides main chamber and subsidiary combustion chamber two parts: main chamber adopts anti-the burning, and burning zone moves from the top down, and moulded coal is carried the burning heat release from bottom to top continuously; Constantly the ashes of being raised by moulded coal squeeze at the pipe of oblique layout and depress, and overflow to subsidiary combustion chamber, under the subsidiary combustion chamber air distribution plate are arranged, and make carbon nuclear after-flame, lime-ash cooling, and cooled lime-ash ploughs under the hydrolock slag bath by automatic slagging plate, gets rid of through the drawer type slag gathering hopper.

Upper boiler has a vertical drum that is filled with water, and is tube sheet at the bottom of the drum, and the drum top is the elliposoidal end socket that has hand-hole.Have many holes on the tube sheet, welding front wall, both walls water screen tube and two smokejack separating tubes, the flue separating tube is separated into three backhauls with burner hearth, and water screen tube links to each other with front header, both sides header respectively with flue separating tube bottom.The elliposoidal end socket is provided with steam (hot water) fairlead, Pressure gauge, safety valve joint chair.Water gage is equipped with in carbonated drink space, drum top, the water inlet base, and four jiaos of bottoms are drawn four down-comers and are joined with front header, both sides header respectively and constitute each water-flow circuit.Front header and both sides header are communicated with, and are respectively equipped with the blow-off pipe joint chair at the both sides header, the boiler of feeding blowdown.The outside flue of burner hearth is provided with heat pipe row, and smoke box is provided with four groups, every group of upper and lower two backhauls, be provided with eight backhaul flues altogether, be provided with heat pipe in the flue, heat pipe is packed on the drum with the heat pipe joint chair, there is the heat pipe joint chair at drum middle part radially radial arrangement, in order to fixing heat pipe, all heat pipes divide eight groups, place in four smoke boxes, the first smoke box import and burner hearth the 3rd backhaul outlet are joined, outlet of the 4th smoke box and chimney link, and other adjacent smoke box communicates from beginning to end, forms eight return hot-pipe heat transfer systems.The second, the 4th smoke box bottom is provided with two inertial dust collection flue-dust retainers, finishes the body dedusting.The boiler back is provided with fire door, and the boiler left side is provided with the flue inspection door.Air blast is by the two-way airduct major and minor combustion chamber of blowing respectively, high-temperature flue gas burner hearth three backhauls of flowing through, and smoke box eight backhauls to chimney is discharged.Air blast and chimney are formed the positive draft system.The boiler outer surface adopts the rare earth heat-insulating material coating, reduces radiation loss.

The utility model adopts that continuous moulded coal is counter to be burnt, the air-supply of moulded coal hole, and sufficient combustion is strong, helps fuel combustion, and does not have ashpit losses; The cooling of subsidiary combustion chamber after-flame reduces physics and deslagging heat loss; Back-end ductwork heat pipe efficient heat transfer, the control exhaust gas temperature has reduced heat loss due to exhaust gas in below 180 ℃; Advantages such as full surface heat preservation material coating reduces radiation loss, therefore and same capability boiler ratio, thermal efficiency height is arranged, and volume is little, and steel consumption is low, and is safe in utilization, and the life-span is long, and operating cost is low, and Operation and Maintenance is simple.

Drawings and Examples:

Fig. 1 overlooks for boiler and A-A, B-B profile

Fig. 2 looks and part sectioned view for the boiler master

Boiler as shown in Figure 1, 2, its critical piece comprises: drum 1., 2. drum has the elliposoidal end socket, the water inlet pipe joint chair 5., smoke box 6., tube sheet 7., down-comer 8., water gage (21), heat pipe joint chair and heat pipe (22).Have 3. on the elliposoidal end socket into aperture apparatus, safety valve 4., Pressure gauge (19), steam fairlead (20).Draw flue separating tube (9), (27) on the tube sheet, side water wall pipe (10), front water wall pipe (28).Back wall is established a fire door (11).The main chamber bottom is provided with wind-distributing pipe (12), the cast iron profiled sheeting (13) of hollow.Be provided with at the bottom of the subsidiary combustion chamber and burn air distribution plate (14), automatically slagging plate (16).Be provided with two-way ventilation duct (15) at the bottom of the combustion chamber, both sides are provided with side header (17).Automatically under the slagging plate drawer type slag gathering hopper (18) is arranged.Eight return run (23) are arranged in four groups of smoke boxes, and each smoke box has two fan smoke box lids (24).Burner hearth is provided with smoke box and connects flue (25).The left side furnace wall has flue inspection door (26).Build furnace wall (29) around the boiler middle and lower part, be furnished with front header (30) under the front wall.There is coal bunker (31) stokehold, conveying worm (33).Blow-off pipe joint chair (32) is arranged on the header of both sides.Be connected with connection flue (34) mutually with chimney in addition, the second, the 4th smoke box is divided into flue-dust retainer (35).Full boiler outer surface scribbles rare earth heat insulation coating (36).

During boiler operatiopn, change according to thermic load, wet coal enters the conveying worm (33) of adjustable speed from coal bunker (31), pressurization is after profiled sheeting (13) is made moulded coal, and by wind-distributing pipe (12) rising dry solidification burning heat release, ashes overflow to and burn air distribution plate (14), burn cooling, lime-ash is put into slag gathering hopper (18) by automatic slagging plate (16), regularly is discharged to outside the stove.Burner hearth three backhauls of flowing through of burning heat of emitting and high-temperature flue gas, make water screen tube 10., separating tube 9., the water heating vaporization in 7. of (27), front water wall pipe (28), tube sheet rises and enters drum 1.; Burner hearth tail high-temperature flue gas is through connecting flue (25), enters smoke box eight backhauls of flowing through up and down, washes away heat pipe (22) evaporator section, and by the stove water of heat pipe condenser section heating drum in 1., the vapour that boiler produces is drawn heating, heat supply by steam fairlead (20).

Claims (2)

1, a kind of continuous moulded coal inverse burning hot pipe heat transfer boiler, it comprises: drum 1., water screen tube (10,28), flue separating tube (9,27), heat pipe (22), conveying worm (33), briquette molding plate (13), wind-distributing pipe (12), drum (1) top is provided with elliposoidal end socket (2), end socket is provided with manhole device (3), safety valve (4), Pressure gauge (19), steam fairlead (20), drum (1) top is provided with water inlet pipe joint chair (5), water gage (21), drum (1) middle part is provided with smoke box (6), drum (1) bottom is provided with down-comer (8), drum (1) lower end is provided with tube sheet (7), be connected with water screen tube (10 on the tube sheet, 28), flue separation path (9,27), boiler bottom is provided with conveying worm (33), briquette molding plate (13), wind-distributing pipe (12), air distribution plate (14), automatic slagging plate (16), ventilation duct (15), it is characterized in that: smoke box (6) divides four groups, on every group, two backhauls down, be provided with eight backhaul flues (23) altogether, establish heat pipe (22) in the flue (23), heat pipe (22) is packed on the drum (1) with heat pipe joint chair level, second, the 4th smoke box is divided into flue-dust retainer (35), each smoke box is provided with two fan smoke box lids (24), flue separating tube (9,27), front water wall pipe (28), two down-comers (8) bottom is connected with front header (30), the front header two ends communicate with side header (17) respectively, side water wall pipe (10), two down-comers (8) bottom is connected with both sides header (17), side header (17) is provided with blow-off pipe joint chair (32), be provided with by conveying worm (33) at boiler bottom, briquette molding plate (13), the coal supply shaped device that wind-distributing pipe (12) is formed, wet coal is through screw machine (33), briquette molding plate (13), make moulded coal and enter burner hearth, profiled sheeting (13) is provided with wind-distributing pipe (12), wind-distributing pipe (12) air feed in the moulded coal hole.

2, as the described a kind of continuous moulded coal inverse burning hot pipe heat transfer boiler of claims (1), it is characterized in that: tube sheet (7) is provided with many holes, and front wall, both walls water screen tube (10,28) and two smokejack separating tubes (9,27) are separated into three backhauls with burner hearth.

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