CN2369124Y - Vertical downward combustion boiler - Google Patents

Abstract

The utility model relates to an atmospheric-pressure hot-water boiler, which comprises a boiler body with a water liner, combustion chambers on the lower part of the boiler body, water pipes distributed on the upper part of the boiler body, etc. A water-liner arch cap suspended and arranged in a space of the lower part of the boiler body and a water-pipe fire grate of a bottom port of the arch cap make a space in the arch cap form a primary combustion chamber which is communicated with a coal throwing door, a space of the lower part of the water-pipe fire grate forms a secondary combustion chamber, and the arch cap is communicated with the boiler body with the water liner through an upper and a lower communicating water pipes. The utility model can make fuel have sufficient combustion so as to reduce the displacement of smoke and be favorable to raising heat exchanging capability, and the utility model has simple structure.

Description

The vertical counter-burning hot-water boiler

The utility model relates to a kind of normal-pressure hot-water boiler, in particular adopt the hot-water boiler of second-time burning mode.

Its structure of present normal-pressure hot-water boiler generally comprises the combustion chamber of water courage body of heater, body of heater bottom and the parts such as heat exchanging water pipe of top cross-distribution are formed, the flue gas that is produced in the combustion chamber is in uphill process, behind heat exchanging water pipe's absorption portion heat, discharge by the chimney at body of heater top.The subject matter that this structure boiler exists is: fuel is in combustion process, have a large amount of not clean-burning fuel particles, under the thermal current effect of stronger rising, be carried in the atmosphere, wherein also comprise not the pernicious gas that fully burning transforms, cause serious environmental to pollute; And the hot-water boiler of this structure, cause the thermal current rate of climb too fast, a large amount of heat energy dissipations are in atmosphere, and energy waste is serious.Therefore, existing hot-water boiler technology and imperfect.

Goal of the invention of the present utility model is to provide a kind of can impel full combustion of fuel, improve the thermal efficiency, reach the vertical counter-burning hot-water boiler of smoke abatement and dust control purpose.

Realize the anti-burning water-heating boiler of main formula of foregoing invention purpose, it includes water courage body of heater, the combustion chamber of body of heater bottom, the parts such as heat exchanging water pipe that top distributes, the major technique characteristics of the technical program are the unsettled water courage arch caps that is arranged on the body of heater lower cavity, make arch cap inner chamber form the primary zone with the water pipe furnace grate of mouth at the bottom of the arch cap, the corresponding body of heater in primary zone is provided with coal-feeding door, space between water pipe furnace grate bottom and the body of heater casting furnace grate constitutes secondary combustion chamber, the corresponding secondary combustion chamber of body of heater is provided with a fire door, and water courage arch cap is communicated with water courage body of heater as sub-truss by being communicated with water pipe up and down.

The vertical counter-burning hot-water boiler that the utility model is designed is the water courage arch cap by setting up, and the body of heater lower cavity is separated into primary zone and two combustion chambers of secondary combustion chamber.This boiler is when normal operation work, the indoor fuel volume when slowly burning downwards of primary combustion constantly dwindles, simultaneously again constantly by the secondary combustion chamber high-temperature baking of bottom, make its part of fuel destructive distillation generate products such as coke and fuel gas, fuel most with unburned, volume-diminished is fallen into the indoor further burning of second-time burning of high temperature by the gap of water pipe furnace grate, after-flame flammable composition wherein, thus reach the purpose of smoke abatement and dust control; In addition, the refractory cement of being located at the secondary combustion chamber bottom periphery is domatic, constitute the flue gas guiding channel with arch hat brim edge, be baked into the cement surface of red heat state, produce very strong red heat radiation, make secondary combustion chamber remain the condition of high temperature, also can be with flammable composition overheavy firing remaining in the rising flue gas, further reduced the discharge capacity of combustible, so the present technique design is significant to environmental protection.Another advantage of present technique is: because the setting of water courage arch cap, prolong the flow through route of flue gas in body of heater, slowed down the speed that flue gas rises, thereby improved high-temperature flue gas and water courage, heat exchanging water pipe's heat-exchange capacity, and having improved the thermal efficiency greatly, energy consumption obviously reduces.Characteristics simple in structure, reliable operation that the utility model also has.

Describe technology contents of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the contour structures schematic diagram of the utility model hot-water boiler

Fig. 2 is the A-A profile of Fig. 1

Fig. 3 is the B-B cutaway view of Fig. 2.

As shown in the figure, the composition structure of this vertical counter-burning hot-water boiler is: it includes water courage body of heater 1, parts such as the heat exchanging water pipe 2 of the cross-distribution on the combustion chamber of bottom and top and chimney 12 in the body of heater, water courage arch cap 3 is unsettled to be arranged in the inner chamber of body of heater 1 bottom, water courage arch inner chamber place, cap 3 bottom is provided with the water pipe furnace grate 5 that communicates with water courage arch cap 3, then water courage arch cap 3 inner chambers constitute primary zone 4, constitute secondary combustion chamber 6 between body of heater casting furnace grate 15 and the water pipe furnace grate 5, in the present embodiment, for avoiding producing vapour lock, water pipe furnace grate 5 has adopted the inclination angle identical with the heat exchanging water pipe 2 of upper of furnace body cross-distribution.This water courage arch cap 3 is to be communicated with water pipe 13,14 up and down as truss support by what communicate with water courage body of heater 1; 4 sidewalls corresponding body of heater 1 in primary zone's is provided with coal-feeding door 9, and also as a wind air inlet of primary zone 4, for increasing the effective rising passway of high-temperature flue gas, this water courage arch cap 3 is to the eccentric setting of coal-feeding door 9 directions for this coal-feeding door 9; Body of heater 1 is positioned at secondary combustion chamber 6 positions and is provided with fire door 10, and this fire door 10 is also as the secondary wind air inlet of this boiler.In this structure, the phase septal space of water pipe furnace grate 5 is greater than the phase septal space of casting furnace grate 15, helps so coal-fired 4 falling into or loosening gently and fall into secondary combustion chamber 6 and burn away through the stove hook from the primary zone.The top that is positioned at water courage arch cap 3 on body of heater 1 is provided with an observation panel 8, can in time the flue dust at arch cap 3 tops be disposed by observation panel 8.

Coal-fired by behind the coal-feeding door 9 input primary zones 4, smoulder and be subjected to the heated baking of secondary combustion chamber in this combustion chamber 4, form the high-temperature region, partial fuel coal is wherein generated products such as coke and fuel gas by destructive distillation, coal cinder because of the burning or the destructive distillation volume dwindle gradually, fall into secondary combustion chamber 6 through the gap of water pipe furnace grate 5 and burn away.Because water courage arch cap 3 top seals, the combustion product gases that contains a large amount of fuel gas and ignitable fuel particle that produces, adverse current pours into secondary combustion chamber 6 downwards, with its after-flame, risen by water courage arch cap 3 and annular flue between the body of heater 1 then, the water bladder wall that washes away the water pipe 2 of cross-distribution on top and water courage body of heater 1, water courage arch cap 3 carries out heat exchange, is discharged by chimney 12 at last, final combustion ashes leaks in the cinder chamber through casting furnace grate 15, and operating personnel can be by lime-ash door 11 with its cleaning.In the present embodiment, the bottom periphery of secondary combustion chamber 6 be provided with by refractory cement infuse domatic 7, this domatic 7 is become the red heat state by flame baking, its high temperature heat radiation not only can make secondary combustion chamber 6 be in high pest state all the time, help burning, and this domatic 7 guiding channel that rises with the edge interruption-forming flue gas of water courage arch cap 3, when unburnt fuel gas rises through this guiding channel, be baked into the red heat state domatic 7 with its further combustion decomposition, so just can reach the purpose of smoke abatement and dust control fully.

This boiler is anti-in work, closes simultaneously as if coal-feeding door 9, fire door 10, then is the state of banking up a fire; When normal combustion was moved, coal-feeding door 9 opened wide, and supplies with one time wind, and fire door 10 can suitably open wide according to combustion case, supplies with secondary wind.

Claims (6)

1, a kind of water courage body of heater (1) that includes, the combustion chamber of body of heater (1) bottom, the vertical counter-burning hot-water boiler of heat exchanging water pipe's parts such as (2) that top distributes, it is characterized in that: the unsettled water courage arch cap (3) that is arranged on body of heater (1) lower cavity, make arch cap (3) inner chamber form primary zone (4) with the water pipe furnace grate (5) of arch cap (3) end mouth, the corresponding body of heater in primary zone (4) (1) is provided with coal-feeding door (9), space between water pipe furnace grate (5) bottom and the body of heater casting furnace grate (15) constitutes secondary combustion chamber (6), the corresponding secondary combustion chamber of body of heater (1) (6) is provided with a fire door (10), and water courage arch cap (3) is by being communicated with water pipe (13 up and down, 14) be communicated with water courage body of heater (1) as sub-truss.

2, hot-water boiler according to claim 1 is characterized in that secondary combustion chamber (6) bottom periphery is provided with domatic (7) of being infused by refractory cement, and domatic (7) form the flue gas guiding channel with water courage arch cap (3) edge.

3, hot-water boiler according to claim 1 is characterized in that water pipe furnace grate (5) is an inclined grate.

4, hot-water boiler according to claim 1 is characterized in that gap between the water pipe furnace grate (5) is greater than the gap between the casting furnace grate (15).

5, hot-water boiler according to claim 1 is characterized in that water courage arch cap (3) is eccentrically set in body of heater (1) lower lumen to coal-feeding door (9).

6, hot-water boiler according to claim 1 is characterized in that the top that is positioned at water courage arch cap (3) on body of heater (1) is provided with an observation panel (8).

Images