CN205402647U - Living beings full -film type wall boiler - Google Patents

Abstract

The utility model discloses a living beings full -film type wall boiler, between its boiler main body's next part case and upper drum intercommunication front membrane type wall, both sides diaphragm type wall encircle the diaphragm type wall and surround with the grate after and form furnace, and next part case intercommunication back diaphragm type wall surrounds the formation flue with upper drum and lower drum with both sides diaphragm type wall. Furnace becomes all membrane wall structure, alleviates the boiler dead weight, increases the furnace gas tightness, enlarges heating area, and favourable reduction furnace temperature restraines nitrogen oxide and generates. On this basis, the flue also adopts diaphragm type wall structure, enlarges heating area, and favourable reduction flue exhaust gas temperature reduces air leakage rate, improves boiler efficiency.

Description

Biomass full film type wall boiler

Technical field

This utility model relates to boiler technology field, particularly relates to a kind of biomass-burning full film type wall boiler.

Background technology

At present, along with a large amount of consumption of the non-renewable energy resources such as coal, oil, natural gas, storage is increasingly exhausted.And biomass are increasingly subject to the attention of society as a kind of regenerative resource.Biomass boiler has the function carrying arch steam and heat source of hot water for commercial production, usage quantity is huge, its in pollutant emission than burning coal, gas, oil fuel boiler have natural advantage: carbon dioxide zero discharge, ultralow (becoming zero) sulfur dioxide (SO2) emissions.

For Chinese patent literature CN101074801A, the chain grate boiler main body of prior art mainly includes charging gear, traveling-grate stoker, face arch, rear arch, upper drum, lower drum, convection tube group and water-cooling wall, upper drum and lower drum and all adopts longitudinal to arrange.Burner hearth is formed between traveling-grate stoker and face arch, rear arch, water-cooling wall.Burner hearth adopts heavy brick construction, not only increases the overall weight of boiler, also strengthens difficulty of construction, there is also that heating surface is few, the defect such as bigger of leaking out.

Existing boiler body, the support of boiler body is undertaken by burner hearth and furnace wall, and owing to burner hearth and furnace wall adopt heavy brick construction, boiler overall weight is very big, it is difficult to realize light-duty design.In this case, the agent structure of boiler can only be supported by base, base and other parts onrelevant effect, not only takes up room, more increases the weight of boiler body.

Existing boiler ash removal parts are unloading valves, and it is arranged at furnace interior, and ash disposal working place is narrow, easily blocks up, inconvenient manual operation, when implementing artificial ash disposal operation, can produce ash cigarette, not only contaminated environment, also because deashing number of times is frequent, labor intensity is big, causes the waste of human resources.Chinese patent literature CN2458518Y discloses a kind of automatic ash discharging device, it is sealed ash hole by inside and outside valve plate, when utilizing blow-on to run, the suction adhesive double valve plates of ash mouth realizes closing function, and when blowing out, the gravitation of ash mouth disappears, and double valve plates is opened realization under self-gravity action and unloaded ash function.When running due to blow-on, gravitation plays pendulum, and produces mistake open mode, makes flue gas and flying dust leakage in burner hearth.

Utility model content

This utility model in order to solve prior art Problems existing, provide a kind of light-duty, air-tightness is good, heating surface is sufficient, the biomass boiler of automatic removing dust.

In order to realize object above, the technical solution adopted in the utility model is: a kind of biomass full film type wall boiler, including the boiler body being made up of fire grate, upper drum, lower drum, down-comer and lower header, connect prepattern wall, both sides membrane wall and rear arch membrane wall between described lower header and upper drum and surround formation burner hearth with fire grate；Membrane wall and both sides membrane wall surround with upper drum and lower drum and form flue after the connection of described lower header.

Further, described upper drum and lower drum connect down-comer upper end respectively, and down-comer bottom is accessed in the annular header formed by the connection of several lower headers.

Described flue is arranged by some partition walls.

The bottom of described flue connects ash pipe, and ash pipe sidewall opening also arranges bearing, arranges rotating shaft at bearing place, and rotating shaft connects swingable flashboard.

Ash inside pipe wall is stretched in one end of described flashboard, and the other end sets up balancing weight.

Compared with prior art, of the present utility model have the advantages of:

1, chamber design is full film type wall structure, alleviates boiler deadweight, increases burner hearth air-tightness, expands heating surface area, favorably reduce fire box temperature, it is suppressed that NO_x formation.Flue is also adopted by membrane wall structure, expands heating surface area, the favourable chimney meatus transmitting smoke temperature that reduces, minimizing air leak rate of air curtain, improves boiler thermal output.

2, owing to upper drum is supported by forward and backward down-comer, burner hearth is then formed by membrane wall, and burner hearth, without additionally increasing supporting construction, relies on body construction supporting deadweight, more compact structure, reduces rolled steel dosage, make boiler lightness.

3, the bottom header adopting four connections forms annular header, in order to replace base, can reduce down-comer quantity, and water circulation is reliable.Annular header organically combines with down-comer, simplifies boiler body structure.

4, at body of heater external connection automatic ash discharging device, it is achieved ash operation is unloaded in timing, saves human cost.

Accompanying drawing explanation

The master that Fig. 1 is chain grate boiler main body looks cross-sectional view.

Fig. 2 is the top view cross section structural representation of chain grate boiler main body.

Fig. 3 is the left view cross-sectional view of chain grate boiler main body.

Fig. 4 is the structural representation of front down-comer.

Fig. 5 is the structural representation of double; two drum.

Fig. 6 is the structural representation of ash exhauster.

Detailed description of the invention

As it is shown in figure 1, biomass full film type wall boiler is made up of boiler body, charging gear 17 and economizer 18.

Boiler body is made up of traveling-grate stoker 1, upper drum 2, lower drum 3, convection bank 4, each membrane wall, down-comer 5 and lower header 6.

The surrounding of traveling-grate stoker 1 is provided with the lower header 6 that four accumbency are arranged, four lower headers 6 are interconnected shape all-in-one-piece annular header.Upper drum 2 front end connects four down-comers 5, and upper drum 2 rear end connects two down-comers 5, and lower drum 3 right-hand member connects two down-comers 5.All down-comer 5 bottoms are inserted in annular header.

Burner hearth 10 is surrounded by traveling-grate stoker 1, upper drum 2, prepattern wall 7, both sides membrane wall 8 and rear arch membrane wall 9 and constitutes.Prepattern wall 7, side, two sides membrane wall 8 and rear arch membrane wall 9 are communicated between upper drum 2 and annular header.Rear arch membrane wall 9 is double-side radiation heating surface, and rear arch membrane wall 9 arranges secondary air channel 15.

The outlet flue connection flue 11 of burner hearth 10.Flue 11 is surrounded by upper drum 2, lower drum 3, side, two sides membrane wall 8 and rear membrane wall 12 and constitutes.Connecting convection bank between upper drum 2 with lower drum 3, convection bank is placed in flue.The upper end of side membrane wall 8 and rear membrane wall 12 connects upper drum 2, and lower header 6 is inserted in the lower end of side membrane wall 8 and rear membrane wall 12.The left and right lateral wall type wall 8 of flue 11 arranges three staggered partition walls 13 erectting arrangement, makes flue 11 form three return flues.

The supporting construction that upper drum 2, lower drum 3, down-comer 5, each membrane wall and annular header composition are stable, overall without additional support structures, it does not have heavy boiler setting and steelframe.

Burner hearth 10 and flue 11 intersection arrange crust block pipe 14, and crust block pipe 14 lower end is connected with rear arch membrane wall 9, and upper drum 2 is accessed in crust block pipe 14 upper end.

Charging aperture offered by the prepattern wall 7 of burner hearth 10, and charging aperture connects charging gear 17.The exhanst gas outlet connection economizer 18 of flue 11.

In the flue having convection bank, the lower space of each return flue is funnel-form ash room 19, owing to ash room 19 has certain gradient, dust stratification in flue can be made along wall free-falling and to collect to ash exhauster 16.

Ash room 19 connects ash exhauster 16.Ash exhauster 16 is made up of ash pipe 161, flashboard 162 and balancing weight 163.Ash pipe 161 sidewall opening also arranges a bearing 164 at this opening part, arranges rotating shaft 165 at this bearing 164 place.Through hole is offered at the middle part of flashboard 162, and flashboard 162 accesses rotating shaft 165 by this through hole set, makes flashboard 162 165 swing around the shaft.Contact ash pipe 161 inwall is stretched in one end of flashboard 162, and the other end installs balancing weight 163, and under the effect of balancing weight, flashboard 162 ash pipe 161 inwall of conflicting is static.

Ash exhauster is connected with Boiler Ash room by ash pipe 161, and lime-ash falls to flashboard 162 and piles up, and when lime-ash accumulation weight exceedes balancing weight, flashboard 162 swing open passage, lime-ash drops out ash pipe 161.

It addition, the installation site of balancing weight is adjustable, such that it is able to control lime-ash accumulation, reasonable adjusting automatic removing dust amount.

Claims (5)

1. a biomass full film type wall boiler, including the boiler body being made up of fire grate, upper drum, lower drum, down-comer and lower header, it is characterised in that: connect prepattern wall, both sides membrane wall and rear arch membrane wall between described lower header and upper drum and surround formation burner hearth with fire grate；Membrane wall and both sides membrane wall surround with upper drum and lower drum and form flue after the connection of described lower header.

2. biomass full film type wall boiler according to claim 1, it is characterised in that described upper drum and lower drum connect down-comer upper end respectively, down-comer bottom is accessed in the annular header formed by the connection of several lower headers.

3. biomass full film type wall boiler according to claim 1, it is characterised in that described flue is arranged by some partition walls.

4. biomass full film type wall boiler according to claim 1, it is characterised in that the bottom of described flue connects ash pipe, and ash pipe sidewall opening also arranges bearing, arranges rotating shaft at bearing place, rotating shaft connects swingable flashboard.

5. biomass full film type wall boiler according to claim 4, it is characterised in that ash inside pipe wall is stretched in one end of described flashboard, and the other end sets up balancing weight.