CN206113306U

CN206113306U - Double fuel boiler

Info

Publication number: CN206113306U
Application number: CN201621029501.3U
Authority: CN
Inventors: 陈晓航
Original assignee: Inner Mongolia Sheng Yi Environmental Technology Co Ltd
Current assignee: Inner Mongolia Shengyi Thermal Energy Technology Co.,Ltd.
Priority date: 2016-08-31
Filing date: 2016-08-31
Publication date: 2017-04-19
Anticipated expiration: 2026-08-31

Abstract

The utility model discloses a double fuel boiler, it includes base, furnace body, combustion chamber, secondary combustion chamber, grate, storage ash chute, at combustion chamber and the secondary combustion chamber that the furnace body is inside to be set up about being equipped with, the grate that sets up about combustion chamber all is equipped with with the secondary combustion chamber lower part with store up the ash chute, be equipped with main charge door respectively and fix and be equipped with heat exchange water tank with vice charge door, the combustion chamber upper portion level above main charge door on the combustion chamber of grate top and secondary combustion chamber lateral wall. The advantage: realized many fuel locellus burning, the burning is abundant, and combustion efficiency that can effectual improvement raw materials avoids the waste of raw materials, the volume of reducing undergrate blast by a wide margin, air inlet vortex effect are showing and are reducing, and the dust content reduces by a wide margin in the flue gas, furnace body water jacket, bell water jacket, cut apart water jacket and heat exchange water tank and combine to carry out the heat transfer, the heat transfer area relative altitude, heat exchange efficiency is high, reduces the heat by a wide margin and scatters and disappears improving energy efficiency.

Description

Double fuel boiler

Technical field：

This utility model is related to radiator technical field, relates in particular to a kind of double fuel boiler.

Background technology：

In the north of China, winter temperature is relatively low, typically using furnace burning coal to radiator or floor heating pipeline Interior water heating, realizes heating by hot water circuit.At present, the furnace on market is directly fired using fuel in burner hearth mostly Burn, the flue dust after burning enters the water that smoke pipe is heated in smoke pipe water tank, in order that the abundant burning of the fuel of furnace interior, needs Increase undergrate blast amount carry out it is combustion-supporting, but, in use find " direct combustion " boiler suffer from the drawback that：1st, only one of which Solid fuel room, the pluralities of fuel with different gasifications or burning condition gasifies or burns in same solid fuel room, it is impossible to The burning condition of different fuel is met simultaneously, gasification or the incomplete combustion of various same fuel is caused, and causes the waste of raw material；2、 " straight to burn " boiler only carries out primary combustion, solid fuel and gaseous fuel is not carried out into locellus combustion according to different burning conditions Burn, fuel combustion is not thorough enough, causes the waste of fuel；3rd, it is short due to firing journey, the fuel gas produced in fuel combustion process Can not fully burn, these fuel gas are discharged in air with flue gas, not only cause the waste of resource, also pollute the environment； 4th, the flame volume that fuel combustion is formed is big, only fuel is carried out by undergrate blast amount combustion-supporting, and combustion-supporting effect is poor, it is impossible to Internal flame and middle flame to flame carries out fully combustion-supporting, causes flame combustion insufficient, and undergrate blast amount is excessive, fuel combustion shape Into ashes discharge in a large number with flame, exhaust gas dust content is especially big, pollutes environment；5th, ignition temperature is generally in body of heater More than 1100 degrees Celsius, this temperature is the critical temperature that oxynitride is most easily generated, and high-temp combustion causes generation substantial amounts of Oxynitride, the health of crisis periphery personnel；6th, smoke pipe water tank heat exchange area is than low, it is impossible to enough effectively heat exchange, heat with Flue gas is discharged in a large number, and heat utilization ratio is low；7th, bell mostly is monolayer bell, the flame in body of heater and bell directly contact, part Heat can be scattered and disappeared by bell, cause the waste of the energy.

Utility model content：

The purpose of this utility model is to provide a kind of double fuel that can be made full combustion of fuel, improve energy utilization rate Boiler.

This utility model is implemented by following technical scheme：Double fuel boiler, it includes base, body of heater, main chamber, secondary combustion Room, fire grate, storage ash-pit are burnt, in the base top body of heater is provided with, furnace water jacket is arranged with outside the body of heater, in institute State furnace interior and be provided with the main chamber and the subsidiary combustion chamber, the main chamber and the subsidiary combustion chamber that left and right is arranged Between connected by communicating pipe, bell is provided with inside the fire door at the top of the main chamber, in the main chamber and described Subsidiary combustion chamber bottom is equipped with the fire grate and the storage ash-pit setting up and down, the main chamber above the fire grate With main charge door and secondary charge door are respectively equipped with the wall of the subsidiary combustion chamber side, between the secondary charge door and the fire grate Subsidiary combustion chamber side wall is provided with breast hole, and in the primary combustor side walls exhaust opening is provided with；The base is hollow shell Body, the cavity of the chassis interior is distribution plenum, is provided with the wall of the distribution plenum side and matching somebody with somebody for connecting inside the distribution plenum Air port；The main chamber upper level above the main charge door is fixed with heat-exchanging water tank, the heat-exchanging water tank with The furnace water jacket is interconnected；The main chamber inner horizontal below the exhaust opening, at the top of the heat-exchanging water tank Dividing plate is fixed with, the main chamber between the dividing plate and heat-exchanging water tank top is combustion-supporting chamber；In the heat exchange Respectively level is fixed with an annular wind-distributing pipe for main chamber inside and subsidiary combustion chamber top below water tank, Some wind distributing holes are provided with the inside of the wind-distributing pipe；Between the combustion-supporting chamber and the distribution plenum, per wind-distributing pipe described in root Connect between the distribution plenum and be provided with ajutage；More than one is placed in heat-exchanging water tank inner vertical sealing to lead Flow tube, the mozzle bottom end seal passes through the heat-exchanging water tank bottom, is placed in the corresponding wind-distributing pipe lower section；The water conservancy diversion Pipe top heat-exchanging water tank top, the dividing plate described in hermetically passing successively, are placed in dividing plate top；Inside the combustion-supporting chamber The water conservancy diversion tube wall be provided with some wind distributing holes.

Further, the fire grate is the adjustable fire grate of fire bars spacing.

Further, it is provided with air register on the sidewall of the furnace body between the fire grate and the storage ash-pit.

Further, it is provided with blast cap at the top of the mozzle.

Further, segmentation water jacket, the segmentation water jacket and the furnace water jacket phase are vertically provided with the furnace interior It is intercommunicated；The furnace interior of the segmentation water jacket side is the main chamber, the segmentation water jacket opposite side it is described Furnace interior is the subsidiary combustion chamber；The sealing in the middle part of the segmentation water jacket has placed a communicating pipe, the communicating pipe Inside the main chamber that one end is placed in above the main charge door, the communicating pipe other end is placed on the secondary charge door Inside the subsidiary combustion chamber of side.

Further, one piece of baffle plate being oppositely arranged with the communicating pipe, institute are provided with the subsidiary combustion chamber inner vertical The top for stating baffle plate is placed in the lower section of the corresponding wind-distributing pipe, and the bottom of the baffle plate is by under tranverse connecting plate and the communicating pipe The segmentation water-jacket outer wall of side is fixedly connected, the segmentation water-jacket outer wall of the communicating pipe both sides in the subsidiary combustion chamber It is fixedly connected with the side of the adjacent baffle plate by one piece of perpendicular connecting plate respectively.

Further, respectively level fixation sets on the baffle plate and the segmentation water-jacket outer wall relative with the baffle plate There is the deflector that some interleaveds are arranged.

Further, it is provided with the bell inside the fire door at the top of the subsidiary combustion chamber.

Further, the bell is double-layer furnace cover, and the double-layer furnace cover includes support tube, lower stove circle, lower bell, upper stove Circle, upper bell, the support tube lower nozzle is placed in inside the corresponding fire door, sets in the support tube lower nozzle top movable There is the lower stove circle, the split at the top of the centre bore of the lower stove circle is provided with the lower bell；On the support tube upper orifice top Portion is movably equipped with the upper furnace ring, and the split at the top of the centre bore of the upper furnace ring is provided with bell on described.

Further, bell water jacket, the bell water jacket difference are provided with the top of the body of heater of support tube periphery Connect with the smoke evacuation water jacket, the furnace water jacket.

Advantage of the present utility model：Double fuel boiler described in the utility model realizes the burning of multi fuel locellus, makes tool The fuel for having different gasifications, burning condition carries out locellus burning two burning interiors, and burning is abundant, can effectively improve raw material Efficiency of combustion, it is to avoid the waste of raw material；The flame combustion being respectively by fire grate, ajutage, bell in body of heater provides combustion-supporting Wind, is greatly decreased undergrate blast amount, and air intake flow-disturbing effect is significantly reduced, and the ashes that solid fuel gasification combustion is formed are difficult with fire Flame is discharged, and dust content is greatly decreased in flue gas；Especially in main chamber, realize multi-section-combustion, multistage and return burning, repeatedly help Combustion, makes fuel and fuel gas fully burn, and dust, carbon monoxide equal size are greatly reduced in flue gas, realize qualified discharge；Lead If large volume flame is divided into the less flame of carried interest by flow tube, internal flame and middle flame are fully combined with combustion air saturation, fully combustion Burn, carbon monoxide content in flue gas is greatly reduced；Flame flame envelope heat is fully absorbed by heat-exchanging water tank, flame combustion temperature is reduced Degree, suppresses the generation of oxynitride；Furnace water jacket, bell water jacket, segmentation water jacket are combined with heat-exchanging water tank and exchanged heat, and are changed Hot area is greatly decreased heat and scatters and disappears than high, heat exchange efficiency height, improves energy utilization rate.

Description of the drawings：

Fig. 1 is this utility model overall structure diagram.

Fig. 2 is double-layer furnace cover structural representation.

Fig. 3 is the adjustable fire grate structure schematic diagram of fire bars spacing.

Fig. 4 uses schematic diagram for this utility model.

Base 1, body of heater 2, main chamber 3, subsidiary combustion chamber 4, fire grate 5, framework 51, fire bars 52, pull bar 53, connecting rod 54, Rotating shaft 55, storage ash-pit 6, fire door 7, bell 8, support tube 81, lower stove circle 82, lower bell 83, upper furnace ring 84, upper bell 85, master add It is material mouth 9, secondary charge door 10, exhaust opening 11, segmentation water jacket 12, distribution plenum 13, air distribution outlet 14, heat-exchanging water tank 15, dividing plate 16, combustion-supporting Room 17, wind-distributing pipe 18, wind distributing hole 19, ajutage 20, mozzle 21, wind distributing hole 22, furnace water jacket 23, smoke exhaust pipe 25, smoke evacuation water Set 26, temperature sensor 27, controller 28, water circulating pump 29, thermal-collecting tube 30, air register 31, bell water jacket 32, communicating pipe 33, Breast hole 34, baffle plate 35, tranverse connecting plate 36, perpendicular connecting plate 37, secondary combustion chamber 38, first-stage firing chamber 39, heating installation bank of tubes 40, deflector 41。

Specific embodiment：

As shown in figure 1, double fuel boiler, it includes base 1, body of heater 2, main chamber 3, subsidiary combustion chamber 4, fire grate 5, storage ash Groove 6, at the top of base 1 body of heater 2 is provided with, and furnace water jacket 23 is arranged with outside body of heater 2, left and right is provided with inside body of heater 2 and is arranged Main chamber 3 and subsidiary combustion chamber 4, be equipped with bell 8 inside the fire door 7 at main chamber 3 and the top of subsidiary combustion chamber 4.

As shown in Fig. 2 bell 8 be double-layer furnace cover, the double-layer furnace cover include support tube 81, lower stove circle 82, lower bell 83, Upper furnace ring 84, upper bell 85, the lower nozzle of support tube 81 is placed in inside corresponding fire door 7, in the lower nozzle top movable of support tube 81 Lower stove circle 82 is provided with, the split at the top of the centre bore of lower stove circle 82 is provided with lower bell 83；In the upper orifice top movable of support tube 81 Upper furnace ring 84 is provided with, the split at the top of the centre bore of upper furnace ring 84 is provided with bell 85；Because the inside of body of heater 2 is subnormal ambient, Cold air outside body of heater 2 is inhaled into inside support tube 81 by the gap between upper bell 85 and upper furnace ring 84, and is absorbed Bell 83 is transmitted to the heat inside support tube 81 under Jing, it is to avoid heat scatters and disappears, and improves energy utilization rate；Cold air after heat absorption Entered inside body of heater 2 by the gap between lower bell 83 and lower stove circle 82, for the oxygen that the flame combustion in body of heater 2 provides abundance Gas；Be provided with bell water jacket 32 at the top of body of heater 2 of the periphery of support tube 81, bell water jacket 32 respectively with smoke evacuation water jacket 26, body of heater water Set 23 is connected；Water in bell water jacket 32 can be fully absorbed using the heat in support tube 81, prevent the heat in support tube 81 Scatter and disappear, improve heat utilization rate；

Fire grate 5 setting up and down and storage ash-pit 6 are equipped with main chamber 3 and the bottom of subsidiary combustion chamber 4, in order to adjust fire grate 5 ventilation, as shown in figure 1, being provided with air register 31 on the side wall of body of heater 2 between fire grate 5 and storage ash-pit 6, is adjusted by adjusting The intake of the bottom of aperture regulation fire grate 5 of air door 31, the i.e. aperture of air register 31 is bigger, and the intake of the bottom of fire grate 5 is more；Adjust The aperture of air door 31 is less, and the intake of the bottom of fire grate 5 is fewer；Or fire grate 5 is the adjustable stove of fire bars spacing as shown in Figure 3 Row, referring to the adjustable fire grate of a kind of fire bars spacing disclosed in Patent No. CN201520110418.8, it includes detailed construction Framework 51, fire bars 52, pull bar 53, connecting rod 54；Five fire bars 52, every fire bars are provided with the inner homogeneous of framework 51 are arranged in parallel 52 two ends rotate connection by a rotating shaft 55 with the adjacent side wall of framework 51 respectively；The rotating shaft 55 of the side wall side of framework 51 is pushed up End is placed in the outside of framework 51 through the side wall of framework 51；The top of the every rotating shaft 55 outside framework 51 is fixed with and rotating shaft 55 axially vertical connecting rods 54, the top of the connecting rod 54 of uniform parallel arrangement is movably hinged respectively with pull bar 53；Push-and-pull is drawn During bar 53, pull bar 53 drives connecting rod 54 to rotate, and connecting rod 54 drives fire bars 52 to rotate around rotating shaft 55, and then changes fire bars 52 Between spacing, by adjust fire grate 5 the spacing of fire bars 52, can adjust by fire grate 5 enter body of heater 2 air quantity；Entered by fire grate 5 Entering the air inside body of heater 2 makes the oxidizing fire under relatively low oxygen concentration of the fuel on fire grate 5 generate the combustible gases such as carbon monoxide Body and flame, are greatly decreased undergrate blast amount, and air intake flow-disturbing effect is significantly reduced, fuel gasification combustion formed ashes be difficult with Flame is discharged, and dust content is greatly decreased in flue gas；

Main charge door 9 and secondary charge door 10 are respectively equipped with the main chamber 3 and the side wall of subsidiary combustion chamber 4 of the top of fire grate 5, The top of fire grate 5 from main charge door 9 to main chamber 3 plus main fuel in from, main fuel is coal, from secondary charge door 10 to secondary burning The top of fire grate 5 in room 4 adds secondary fuel, and secondary fuel is fuel wood, straw biomass fuel, moulded coal, semi-coke etc., in secondary charge door The side wall of subsidiary combustion chamber 4 between 10 and fire grate 5 is provided with breast hole 34, the lime-ash on easy cleaning fire grate 5；

Segmentation water jacket 12 is provided with the inner vertical of body of heater 2, segmentation water jacket 12 is interconnected with furnace water jacket 23；Segmentation water jacket The inside of body of heater 2 of 12 sides is main chamber 3, and the inside of body of heater 2 for splitting the opposite side of water jacket 12 is subsidiary combustion chamber 4；In segmentation water The sealing of the middle part of set 12 has placed a communicating pipe 33, communicating pipe 33 one end be placed in inside the main chamber 3 of the top of main charge door 9, Communicating pipe 33, the other end was placed in inside the subsidiary combustion chamber 4 of the top of secondary charge door 10；

One piece of baffle plate 35 being oppositely arranged with communicating pipe 33 is provided with the inner vertical of subsidiary combustion chamber 4, the top of baffle plate 35 is put In the lower section of corresponding wind-distributing pipe 18, the bottom of baffle plate 35 is by tranverse connecting plate 36 and the outer wall of segmentation water jacket 12 of the lower section of communicating pipe 33 Be fixedly connected, in subsidiary combustion chamber 4 communicating pipe 33 both sides the outer wall of segmentation water jacket 12 respectively by one piece of perpendicular connecting plate 37 with it is adjacent The side of baffle plate 35 be fixedly connected；Respectively level fixation sets on baffle plate 35 and segmentation water jacket 12 outer wall relative with baffle plate 35 There is the deflector 41 that some interleaveds are arranged；The sky that flame in subsidiary combustion chamber 4 is entered between baffle plate 35 and segmentation water jacket 12 It is interior, and make flame fully burn to through each deflector 41 many backhaul bafflings are carried out next time via on, afterwards again Jing connects Siphunculus 33 is entered into inside the main chamber 3 of the lower section of heat-exchanging water tank 15, is burnt again after mixing with the flame in main chamber 3；

The upper level of main chamber 3 in the top of main charge door 9 is fixed with heat-exchanging water tank 15, and heat-exchanging water tank 15 is by body of heater It is divided into secondary combustion chamber 38 setting up and down and first-stage firing chamber 39 inside 2；Heat-exchanging water tank 15 is interconnected with furnace water jacket 23, Water in furnace water jacket 23 mutually circulates with the water in heat-exchanging water tank 15, and the water in heat-exchanging water tank 15 can be fully absorbed in body of heater 2 The heat that fuel combustion is produced, heat absorption is fast, heat exchange efficiency is high；Base 1 is hollow housing, and the cavity inside base 1 is distribution plenum 13, it is provided with the side wall of distribution plenum 13 and the air distribution outlet 14 connected inside distribution plenum 13；Cold air Jing air distribution outlets outside body of heater 2 14 enter inside distribution plenum 13；

The inner horizontal of main chamber 3 below exhaust opening 11, at the top of heat-exchanging water tank 15 is fixed with dividing plate 16, dividing plate 16 It is combustion-supporting chamber 17 with the main chamber 3 between the top of heat-exchanging water tank 15；The inside of main chamber 3 and pair below heat-exchanging water tank 15 Respectively level is fixed with a wind-distributing pipe 18 to the top of combustor 4, between combustion-supporting chamber 17 and distribution plenum 13, every wind-distributing pipe 18 Connect between distribution plenum 13 and be provided with ajutage 20；Cold air Jing ajutages 20 in distribution plenum 13 have respectively entered cloth wind Inside pipe 18 and combustion-supporting chamber 17, in the process cold air absorbs respectively the thermal temperature inside main chamber 3, subsidiary combustion chamber 4 Gradually rising becomes high temperature air, reach wind-distributing pipe 20 and during combustion-supporting chamber 17 substantially with body of heater 2 inside ambient temperature degree phase Together；Some wind distributing holes 19 are provided with the inner side of wind-distributing pipe 18, the high temperature air Jing wind distributing holes 19 in wind-distributing pipe 18 are uniformly distributed To inside corresponding main chamber 3, subsidiary combustion chamber 4, play a part of combustion-supporting to return burning；Wear in the sealing of the inner vertical of heat-exchanging water tank 15 Three mozzles 21 are equipped with, at the top of mozzle 21 blast cap 24 are provided with, the bottom end seal of mozzle 21 passes through the bottom of heat-exchanging water tank 15, It is placed in the lower section of corresponding wind-distributing pipe 18；The top of mozzle 21 top of hermetically passing heat-exchanging water tank 15, dividing plate 16 successively, are placed in dividing plate 16 tops；Some wind distributing holes 22, the large volume in first-stage firing chamber 39 are provided with the tube wall of mozzle 21 inside combustion-supporting chamber 17 If flame enters into secondary combustion chamber 38 Jing after mozzle 21 is divided into the flame of carried interest small volume and carries out second-time burning, here mistake High temperature air Jing wind distributing holes 22 inside Cheng Zhong combustion-supporting chamber 17 are entered in mozzle 21, with the less flame of the inner volume of mozzle 21 Internal flame and middle flame be sufficiently mixed, play combustion-supporting effect, the flame for making the top of dividing plate 16 fully burns；In the side of main chamber 3 Wall is provided with exhaust opening 11；

When this utility model is applied to heating, need to connect smoke exhaust pipe 25 on exhaust opening 11, smoke exhaust pipe 25 can be wing Sheet efficient heat exchange smoke pipe (its concrete structure can be found in the patent documentation of Application No. CN201520110372.X), or such as Fig. 4 Shown that smoke evacuation water jacket 26 is arranged with the outer wall of smoke exhaust pipe 25, by discharging fume, water jacket 26 is carried out to the fume afterheat in smoke exhaust pipe 25 Absorb；Smoke evacuation water jacket 26 is connected with furnace water jacket 23, and the water discharged fume in water jacket 26 mutually flows with the water in furnace water jacket 23 It is logical；In order to prevent heat to scatter and disappear, heat-insulation layer can be set on smoke evacuation water jacket 26, furnace water jacket 23, the outer wall of bell water jacket 32；Smoke evacuation 5 thermal-collecting tubes 30 are provided with inside pipe 25, the two ends of thermal-collecting tube 30 are each passed through the tube wall of smoke exhaust pipe 25, are placed in inside smoke evacuation water jacket 26； Thermal-collecting tube 30 can improve the utilization rate of waste heat of flue gas in smoke exhaust pipe 25；Temperature sensor 27 is provided with the smoke evacuation side wall of water jacket 26, Controller 28 is fixed with the smoke evacuation outer wall of water jacket 26, temperature sensor 27 is connected with the input of controller 28, controller 28 outfan is connected with water circulating pump 29, and the outlet of water circulating pump 29 is connected by pipeline with the water inlet of furnace water jacket 23 Logical, the water inlet of water circulating pump 29 is connected with the return pipe of heating installation bank of tubes 40, and the water inlet of heating installation bank of tubes 40 is by pipeline and row The outlet connection of succi Nicotiana tabacum L. set 26；The temperature of the recirculated water that can be discharged fume in water jacket 26 with real-time detection by temperature sensor 27, And the temperature information for detecting is sent to into controller 28, the temperature letter that controller 28 sends the temperature sensor 27 for receiving Number contrasted with the default temperature value of controller 28, when temperature sensor 27 detects the circulating water temperature in smoke evacuation water jacket 26 When reaching the temperature value of setting, the sending signal of 28 casees water circulating pumps of controller 29, water circulating pump 29 is started working, by heating installation bank of tubes Water circulating pump in 40 is as arrived in furnace water jacket 23, and discharge fume water jacket 26, bell water jacket 32, heat-exchanging water tank 15 and furnace water jacket 23 Sequentially the Jing smoke evacuations outlet of water jacket 26 is exited into inside heating installation bank of tubes 40 interior water, until the row of detecting of temperature sensor 27 When circulating water temperature in succi Nicotiana tabacum L. set 26 is less than the temperature value that controller 28 sets, water circulating pump 29 quits work, controller 28 The keying of water circulating pump 29 is controlled according to the circulating water temperature in the smoke evacuation water jacket 26 that temperature sensor 27 is detected, and then is controlled The Automatic Cycle of recirculated water processed.

Operation principle：Respectively fuel is added to the inside of main chamber 3, subsidiary combustion chamber 4 from main charge door 9, secondary charge door 10, The top of corresponding fire grate 5 is placed in, pilot fuel adjusts the air quantity that body of heater 2 is entered by fire grate 5, using once helping by fire grate 5 Combustion wind makes the fuel on fire grate 5 general gasification, carries out primary combustion, produces after the fuel primary combustion on fire grate 5 and cannot contain completely The fuel gas of full burning；

Wherein, the unburnt fuel gas in subsidiary combustion chamber 4 is backward as flame rises to the top of subsidiary combustion chamber 4 Lower baffling, and burning is returned with the air mixing discharged by corresponding bell 8, wind-distributing pipe 18, return the flame after burning and enter baffle plate 35, connecting plate In space between 36 and perpendicular connecting plate 37, and Jing communicating pipes 33 heat-exchanging water is entered after more than 41 baffling of Jing deflectors, fully burning In the main chamber 3 of the lower section of case 15；

And main chamber 3 is risen in the lower section first-stage firing chamber 39 of heat-exchanging water tank 15 with flame, in the process, air distribution Cold air Jing ajutages 20 in room 13 are entered in the wind-distributing pipe 18 of the lower section of heat-exchanging water tank 15, and Jing wind distributing holes 19 are outwards drained into Inside the body of heater 2 of the lower section of heat-exchanging water tank 15, mix with the adverse current of the flame containing imperfect combustion fuel gas, formation is once returned Burn, once return to be thrown away in the flame after burning and carry the fuel gas that do not burn completely of part；Once return flame and Jing after burning The flame Jing mozzles 21 returned after burning of the subsidiary combustion chamber 4 that communicating pipe 33 is sent are entered in the secondary combustion chamber 38 of the top of dividing plate 16 Portion, in the process, the cold air Jing ajutages 20 in distribution plenum 13 are entered in combustion-supporting chamber 17, and Jing wind distributing holes 22 are entered and led Flow tube 21, mixes combustion-supporting with the fuel gas in the flame of mozzle 21, makes the flame discharged by mozzle 21 in secondary firing Second-time burning is carried out inside room 38；In the process, part cold air passes sequentially through the seam between bell 85 and upper furnace ring 84 Gap between gap, lower bell 83 and lower stove circle 82 downwardly into secondary combustion chamber 38 inside, with the flame after second-time burning Adverse current mixing carries out secondary combustion, makes the fuel gas not burnt completely further burn, and improves fuel and fuel gas Combustion rate, improves energy utilization rate, reduces the discharge of harmful gass；Flue gas Jing exhaust openings 11, the smoke evacuation produced after secondary combustion Pipe 25 is discharged.

In above-mentioned combustion process, the flame combustion being respectively by fire grate 5, ajutage 20, bell 8 in body of heater 2 is provided Combustion air enters, and undergrate blast amount is greatly decreased, and air intake flow-disturbing effect is significantly reduced, and the ashes that solid fuel gasification combustion is formed are not Easily discharge with flame, dust content is greatly decreased in flue gas；Exchanged heat with body of heater 2 by furnace water jacket 23, reduce the inner loop of body of heater 2 Border temperature, by bell water jacket 32 the top heat of body of heater 2 is absorbed, and prevents heat to be scattered and disappeared by bell 8, abundant by heat-exchanging water tank 15 Flame flame envelope heat is absorbed, flame combustion temperature is reduced, suppresses the generation of oxynitride；Furnace water jacket 23, bell water jacket 32 Combined with heat-exchanging water tank 15 and exchanged heat, heat exchange area is than high, and heat exchange efficiency is high, and heat is greatly reduced with fume emission；

In sum, double fuel boiler described in the utility model will be fired based on the interior part of body of heater 2 by segmentation water jacket 12 4 two combustor in room 3 and subsidiary combustion chamber are burnt, makes there are different gasifications, the fuel of burning condition interiors of burning at two are carried out point Room is burnt, and burning is abundant, can effectively improve the efficiency of combustion of raw material, it is to avoid the waste of raw material；

Fuel can be carried out once combustion-supporting by adjusting the intake of fire grate 5 bottom, and heat-exchanging water tank 15 is by inside body of heater 2 It is divided into secondary combustion chamber 38 setting up and down and first-stage firing chamber 39, the large volume flame Jing mozzles 21 in first-stage firing chamber 39 If being divided into the flame of carried interest small volume, the flame of first-stage firing chamber 39 is clashed into and occur after the bottom of heat-exchanging water tank 15 baffling and cloth wind The secondary combustion-supporting wind mixing flame that pipe 18 is discharged once is returned burning, and the wind in combustion-supporting chamber 17 is by the wind distributing hole on mozzle 21 22 enter after mozzle 21 flame that can be fully internal with it mixes, and plays three combustion-supporting effects, and air is by the double of uniqueness Layer bell carries out four combustion-supporting formation secondary combustions into secondary combustion chamber 38 and its internal flame, described in the utility model Double fuel boiler realizes the burning of multi fuel point stove, multi-section-combustion, multistage is especially realized in main chamber 3 and returns burnings, multiple It is combustion-supporting, make fuel and fuel gas fully burn, dust, carbon monoxide equal size are greatly reduced in flue gas, realize qualified discharge.

If making following modification on the basis of double fuel boiler described in the utility model：Will segmentation water jacket 12, stove Body water jacket 23, smoke evacuation water jacket 26, bell water jacket 32 remove, and heat-exchanging water tank 15 is changed to into dividing plate；Amended boiler equally has Can make fuel combustion fully, the advantage that dust is few, energy utilization rate is high in flue gas, heating is can be directly used for, equally in this reality With in new protection domain.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit this utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in this utility model Protection domain within.

Claims

1. double fuel boiler, it includes base, body of heater, main chamber, subsidiary combustion chamber, fire grate, storage ash-pit, in the base top The body of heater is provided with, outside the body of heater furnace water jacket is arranged with, in the furnace interior master that left and right is arranged is provided with Combustor and the subsidiary combustion chamber, are connected, in the main combustion between the main chamber and the subsidiary combustion chamber by communicating pipe Bell is provided with inside the fire door for burning ceiling portion, in the main chamber and the subsidiary combustion chamber bottom institute setting up and down is equipped with Fire grate and the storage ash-pit are stated, on the main chamber and subsidiary combustion chamber side wall above the fire grate master is respectively equipped with Charge door and secondary charge door, on the subsidiary combustion chamber side wall between the secondary charge door and the fire grate breast hole is provided with, Exhaust opening is provided with the primary combustor side walls；Characterized in that, the base is hollow housing, the chamber of the chassis interior Body is distribution plenum, is provided with the wall of the distribution plenum side and the air distribution outlet connected inside the distribution plenum；In the main charge door The main chamber upper level of top is fixed with heat-exchanging water tank, and the heat-exchanging water tank is mutually interconnected with the furnace water jacket It is logical；The main chamber inner horizontal below the exhaust opening, at the top of the heat-exchanging water tank is fixed with dividing plate, it is described every The main chamber between plate and heat-exchanging water tank top is combustion-supporting chamber；The main burning below the heat-exchanging water tank Respectively level is fixed with an annular wind-distributing pipe for chamber interior and subsidiary combustion chamber top, is provided with the inside of the wind-distributing pipe Some wind distributing holes；Connect between wind-distributing pipe and the distribution plenum between the combustion-supporting chamber and the distribution plenum, per described in root It is provided with ajutage；The mozzle of more than one is placed in heat-exchanging water tank inner vertical sealing, the mozzle bottom is close Envelope is placed in the corresponding wind-distributing pipe lower section through the heat-exchanging water tank bottom；Mozzle top hermetically passing institute successively Heat-exchanging water tank top, the dividing plate are stated, the dividing plate top is placed in；On the water conservancy diversion tube wall inside the combustion-supporting chamber It is provided with some wind distributing holes.

2. double fuel boiler according to claim 1, it is characterised in that the fire grate is the adjustable fire grate of fire bars spacing.

3. double fuel boiler according to claim 1, it is characterised in that the institute between the fire grate and the storage ash-pit State sidewall of the furnace body and be provided with air register.

4. double fuel boiler according to claim 1, it is characterised in that be provided with blast cap at the top of the mozzle.

5. according to the arbitrary described double fuel boiler of Claims 1-4, it is characterised in that be vertically provided with the furnace interior Segmentation water jacket, the segmentation water jacket is interconnected with the furnace water jacket；The furnace interior of the segmentation water jacket side is The main chamber, the furnace interior of the segmentation water jacket opposite side is the subsidiary combustion chamber；In the segmentation water jacket Portion's sealing has placed a communicating pipe, in the main chamber that described communicating pipe one end is placed in above the main charge door Portion, inside the subsidiary combustion chamber that the communicating pipe other end is placed in above the secondary charge door.

6. double fuel boiler according to claim 5, it is characterised in that be provided with a piece in the subsidiary combustion chamber inner vertical The baffle plate being oppositely arranged with the communicating pipe, the top of the baffle plate is placed in the lower section of the corresponding wind-distributing pipe, the baffle plate Bottom be fixedly connected with the segmentation water-jacket outer wall below the communicating pipe by tranverse connecting plate, the institute in the subsidiary combustion chamber The segmentation water-jacket outer wall for stating communicating pipe both sides fixes company by one piece of perpendicular connecting plate with the side of the adjacent baffle plate respectively Connect.

7. double fuel boiler according to claim 6, it is characterised in that in the baffle plate and the institute relative with the baffle plate State on segmentation water-jacket outer wall that respectively level is fixed with the deflector that some interleaveds are arranged.

8. according to the arbitrary described double fuel boiler in claim 1,2,3,4,6 or 7, it is characterised in that in the subsidiary combustion chamber The bell is provided with inside the fire door at top.

9. double fuel boiler according to claim 5, it is characterised in that in the fire door at the top of the subsidiary combustion chamber Portion is provided with the bell.

10. according to the arbitrary described double fuel boiler in claim 1,2,3,4,6,7 or 9, it is characterised in that the bell is double Layer bell, the double-layer furnace cover includes support tube, lower stove circle, lower bell, upper furnace ring, upper bell, and the support tube lower nozzle is put Inside the corresponding fire door, the lower stove circle is provided with the support tube lower nozzle top movable, in the lower stove circle Centre bore top split is provided with the lower bell；The upper furnace ring is provided with the support tube upper orifice top movable, described The centre bore top split of upper furnace ring is provided with the upper bell.

11. double fuel boilers according to claim 10, it is characterised in that the bell be double-layer furnace cover, the bilayer Bell includes support tube, lower stove circle, lower bell, upper furnace ring, upper bell, and the support tube lower nozzle is placed in the corresponding fire door Inside, in the support tube lower nozzle top movable the lower stove circle is provided with, and the split at the top of the centre bore of the lower stove circle sets There is the lower bell；The upper furnace ring is provided with the support tube upper orifice top movable, on the centre bore top of the upper furnace ring Part body is provided with the upper bell.

12. double fuel boilers according to claim 10, it is characterised in that on the body of heater top of support tube periphery Portion is provided with bell water jacket, and the bell water jacket is connected respectively with the smoke evacuation water jacket, the furnace water jacket.

13. double fuel boilers according to claim 11, it is characterised in that in the body of heater of support tube periphery Top is provided with bell water jacket, and the bell water jacket is connected respectively with the smoke evacuation water jacket, the furnace water jacket.