CN203286555U

CN203286555U - Gas boiler modified from coal furnace

Info

Publication number: CN203286555U
Application number: CN201320353443XU
Authority: CN
Inventors: 刘涵雪
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-19
Filing date: 2013-06-19
Publication date: 2013-11-13
Anticipated expiration: 2023-06-19

Abstract

The utility model discloses a gas boiler modified from a coal furnace. The gas boiler comprises a boiler body, a boiler door arranged on the side face of the boiler body and a flue arranged on the top of the boiler body. Heating coil pipes are arranged on the inner side wall of the boiler body, a gas device used for providing a heat source and an air distribution device are arranged in the boiler body, the gas device comprises three gas pipes vertically arranged at the boiler bottom, the air distribution device comprises three air branch pipes vertically arranged at the boiler bottom, a 90-degree angle is formed between the air outlet end of each air branch pipe and the corresponding air branch pipe, the air outlet ends of the air branch pipes face towards the inner side wall of the boiler body, located in the same plane and spaced with one another at 120 degrees, the opening end of each gas pipe is inserted in the corresponding air outlet end, and burners used for burning gas are arranged in the air outlet ends respectively. By means of the structure and a boiler body of an existing boiler, reuse of the existing boiler can be achieved as long as a corresponding conveying pipeline is installed. Besides, heat efficiency is improved, cost is saved, and the gas boiler can totally meet production requirements.

Description

A kind of gas fired-boiler by coal-fired boiler reform

Technical field

The utility model relates to field of boilers, is specifically related to a kind of vertical gas boiler that is formed by the coal fired boiler transformation.

Background technology

Mostly existing gas fired-boiler is to adopt horizontal type structure, and furnace wall is sandwich, the inner filling heat medium, inside is divided into a plurality of burning zones, gas port is positioned at an end of lowermost layer, and the coal gas after the burning can, in the inner back and forth rising of body of heater, can utilize the heat of combustion gas to greatest extent like this.And coal fired boiler rises due to coal flame, can only adopt vertical boiler, extends in vertical direction body of heater to improve the utilization rate of heat.All to act as a fuel with coal at present a lot of boilers being arranged, energy shortage now, the resource that particularly this class of coal can't short period regeneration, and the pollution after coal combustion is also large, and now a lot of producers all use combustion gas instead as the burning energy, but because the structure of two kinds of boilers is different, can not directly apply mechanically, can only again buy gas fired-boiler, also need simultaneously to change corresponding pipeline, original coal-burning boiler will leave unused or process, and having increased cost has wasted again resource.In addition, also there is variety of issue in existing ignition of the boiler device on utilizing, and is as single in the mode of using, and the fuel state of igniting is had relatively high expectations, and is unfavorable for that some have the unit of many fuel utilizations ability.

The utility model content

Can't use the problem of coal gas for solving existing coal-burning boiler, the utility model carries out structure of modification on the basis of existing coal-burning boiler, make coal-burning boiler directly can use combustion gas to improve simultaneously the combustion gas utilization rate.concrete scheme is as follows: a kind of gas fired-boiler by coal-fired boiler reform, comprise the flue that the fire door that arranges on body of heater and body of heater side and body of heater top arrange, be provided with heat(ing) coil on the furnace body inside wall, it is characterized in that, be provided with gas combustion apparatus and air distribution device that thermal source is provided in described body of heater, described gas combustion apparatus comprises three Gas Pipe that are vertically mounted on furnace bottom, described air distribution device comprises three air arms that are vertically mounted on furnace bottom, the air outlet slit end of air arm become with the air arm 90 the degree right angles and towards the furnace body inside wall, three air outlet slit ends are positioned at same plane and space 120 degree, the openend of each Gas Pipe inserts respectively in an air openings end, be respectively arranged with the burner of lighting combustion gas in each air outlet slit end.

For improving the heat circulation: described heat(ing) coil is close on the inwall of body of heater mutually in the mode of coiling, is provided with EGR on body of heater, and EGR circulates heat(ing) coil interior media and external equipment in body of heater.

for convenience of lighting a fire: described burner comprises the oil pipe that oil is provided, being enclosed within oil pipe provides the tracheae of combustion gas outward, promising oil pipe is set between described tracheae and oil pipe the sleeve pipe of combustion air is provided, oil pipe is movably arranged in sleeve pipe by the oil pipe brace rod that is fixedly installed on the outer surface, described sleeve pipe is by being fixedly installed inclination blade and the sliding-contact of tracheae inner surface on the outer surface, place is provided with the gas box that communicates with combustion gas at the tracheae inlet end, be outside equipped with the bellows that combustion air is provided that tracheae is included at tracheae, have the air inlet that enters for air and the flame jet corresponding with the tracheae outlet side on bellows, be provided with the catch fire flame eye of state of igniter and detection at tracheae outlet side place.

For convenience of safeguarding: the oil inlet end of described oil pipe is positioned at outside sleeve pipe, be provided with the auxiliary-air intake mouth on the sleeve pipe inlet end corresponding with the oil inlet end of oil pipe, the auxiliary-air intake mouth is vertical with sleeve pipe, and the end face of the inlet end of sleeve pipe is movably fixed to oil pipe on axial line, and the sleeve pipe other end is movably fixed to oil pipe on axial line by the oil pipe brace rod that is fixed on the oil pipe outer surface.

For improving flame intensity: described tracheae excircle axially evenly is provided with a plurality of circumferential tracheaes, each circumferential tracheae inlet end is positioned at gas box, and circumferentially the tracheae outlet side is separately fixed on the outer surface of a circumferential stationary pipes, the outer surface of described circumferential stationary pipes is fixedly connected with each circumferential tracheae outlet side respectively by the radial reinforced rib that is fixedly installed, and utilizes the connection gusset to be connected and fixed between each circumferential tracheae outlet side.

regulate for convenience flame size: described gas box is positioned at oil pipe oil inlet end one side and is provided with gas-flow regulator, described gas-flow regulator comprises that is enclosed within the outer stationary pipes of sleeve pipe, and be enclosed within the adjustable pipe of the outer and length of stationary pipes less than stationary pipes, adjustable pipe is slidably mounted on outside stationary pipes by the axostylus axostyle that two ends are separately fixed on stationary pipes, be fixed with adjusting ring on adjustable pipe, be equipped with on an adjusting ring side relative with gas box and each circumferential tracheae inlet end position and adjusting rod corresponding to quantity, the sidewall that the other end of adjusting rod passes gas box enters in gas box, be positioned on the adjusting rod termination of gas box and be provided with the taper regulating block corresponding with circumferential tracheae inlet end diameter.

For controlling flowing of combustion gas: described Gas Pipe is connected with the combustion gas trunk line respectively, and the air arm is connected with gas main duct respectively, is provided with flow control valve on each Gas Pipe and air arm.

For improving the flow velocity of combustion gas: the blower fan of strengthening air mass flow is installed on the gas main duct of described air arm, is provided with the master control valve on described combustion gas trunk line.

For improving the output of combustion gas: the Xiang Duan of described Gas Pipe is divided into twice U-shaped arm, and the port of export of U-shaped arm is connected to form the dual circuit input with burner respectively.

For increasing operation rate: described flue is double-decker, and double-decker inside is connected with recirculated water.

The utility model is with the grey chamber sealing of former coal-burning boiler, simultaneously the space of fire bars is also shut, Gas Pipe and air arm are arranged in body of heater, realize the conveying of combustion gas, for every Gas Pipe configures the diameter of the diameter of an air arm and air arm greater than gas pipeline, can guarantee so the required air of fuel gas buring, simultaneously the direction after fuel gas buring is aimed at furnace wall and can improve firing rate and heat absorption, heat(ing) coil is centered around on inboard wall of furnace body, each other continuously every, can guarantee to absorb to greatest extent heat.Can realize the adjusting of temperature in body of heater by the control valve that configures on each gas pipeline and air arm, and be conducive to safeguard at ordinary times, the structure of burner can guarantee that combustion gas fully mixes with air, improves fuel value.On body of heater inside, refractory material is set, can improves the service life of boiler, and lower the temperature around being beneficial to boiler.The length of flame while utilizing blower fan to increase fuel gas buring.The utility model has utilized structure and the body of heater of existing boiler, only needs corresponding conveyance conduit is installed, and can realize the recycling of old boiler, but also improve the thermal efficiency, provides cost savings, and can meet need of production fully.The utility model adopts the structure of two-tube suit and circumferential tracheae, under the basic function of realizing igniting, can also realize oil, the mixed combustion of combustion gas and pure fuel gas buring.Stable, efficient burning in the time of simultaneously can realizing fluctuating widely air feed, the maximum saving energy that limits.Adopt gas-flow regulator to adjust the discrepancy amount of combustion gas according to the supply pressure of combustion gas, reach the purpose of balance combustion flame.Can increase the supply of combustion gas by circumferential tracheae, for using separately burner, provide convenience.The convenient extraction out of the oil pipe that the employing activity is installed safeguarded.Utilize different accessories can adapt to different burning needs.This programme adopts the gas box unification that combustion gas is provided, and realizes flow-control, makes the burner can be according to the supply situation of combustion gas and fuel oil, and maximization is effective.

Description of drawings

Fig. 1 structural representation of the present utility model;

The inner top view of Fig. 2 the utility model;

Fig. 3 burner structure schematic diagram of the present utility model;

The openend structural representation of burner in Fig. 4 the utility model;

The port of export structural representation of burner in Fig. 5 the utility model;

attached number in the figure explanation: 1-body of heater, the 101-furnace bottom, the 102-refractory material, 103-ash chamber, the 104-heat(ing) coil, the 105-EGR, the 106-flue, 107-recirculated water, the 108-blower fan, the 109-fire door, the 2-burner, the 201-oil pipe, the 202-air inlet, the 203-flame jet, the 204-sleeve pipe, 205-auxiliary-air intake mouth, the 206-tracheae, 207-oil pipe brace rod, 208-inclination blade, 209-air blade, the 210-bellows, the 3-gas-flow regulator, the 301-stationary pipes, the 302-adjustable pipe, the 303-adjusting rod, 304-taper regulating block, the 305-axostylus axostyle, 306-threaded adjusting bar, the 307-adjusting ring, the 4-gas box, the 401-fuel gas inlet, the 5-gas combustion apparatus, the 501-Gas Pipe, 502-U shape arm, the 503-flow control valve, 504-master control valve, 505-combustion gas trunk line, the 6-air distribution device, 601-air outlet slit end, 602-air arm, the 603-gas main duct, the circumferential tracheae of 7-, the circumferential tracheae inlet end of 701-, the circumferential stationary pipes of 702-, the 703-radial reinforced rib, 704-connects gusset, the circumferential tracheae of 705-outlet side, the 8-flame holder, the segmentation of 801-oil pipe, the segmentation of 802-sleeve pipe, the segmentation of 803-tracheae, the steady flame tube of 804-, the 805-steadying plate, the 806-metal hose, the 9-igniter, the 10-flame eye.

The specific embodiment

As shown in Figure 1, 2, the utility model is transformed on existing coal fired boiler basis, boiler structure is improved and makes it gas fired, the heat(ing) coil 104 that spirals and install wherein is set on the inwall of body of heater 1, the two ends of heat(ing) coil 104 are connected with EGR 105, and EGR 105 is used for the heat medium in heat(ing) coil 104 and the extraneous facility that uses are circulated.The grey chamber 103 of former boiler is transformed into the installation passage of various pipelines, keep the flue 106 on fire door 109 and top on body of heater 1, in order better to absorb heat, this programme is arranged to double-decker with flue 106,, at double-decker internal circulation recirculated water 107, provide hot water to use to factory building.The inside of body of heater 1 arranges gas combustion apparatus 5 and air distribution device 6, gas combustion apparatus 5 comprises three Gas Pipe 501, air distribution device 6 comprises three air arms 602 that match with Gas Pipe 501, wherein the diameter of Gas Pipe 501 is less than the diameter of air arm 602, and both diameters ratio is approximately: 0.2:1.three air arms 602 are installed centre in body of heater and vertical with furnace bottom 101 concentratedly, the air outlet slit end 601 of air arm 602 becomes the knuckle of 90 degree with the air arm, openend is towards inboard wall of furnace body, the air outlet slit end 601 of three air arms 602 is positioned at same plane and space 120 degree, Gas Pipe 501 is same perpendicular to furnace bottom 101 and be communicated with the air outlet slit end 601 of an air arm 602 respectively, at the interior burner 2 that arranges of air outlet slit end 601, the port of export of Gas Pipe is arranged to U-shaped arm 502, air arm 602 gas main duct 603 outer with being arranged on body of heater 1 is connected, each air arm 602 is provided with flow control valve 503 with the junction of gas main duct 603, flow control valve is used for controlling switch and the uninterrupted of air, an end in gas main duct 603 arranges blower fan 108, blower fan 108 is used for strengthening the interior mobile wind-force of gas main duct 603.Gas Pipe 501 the combustion gas supervisor 5 outer with being arranged on body of heater 1 be connected, each Gas Pipe 501 is respectively arranged with flow control valve 503 with combustion gas trunk line 505 junctions, flow control valve 503 is used for cutting out and controlling gas flow, be provided with total valve 504 on combustion gas trunk line 505, total valve 504 is controlled the gas circulation of whole combustion gas trunk line 505, can facilitate the maintenance of body of heater 1 interior conduit.

Gas fired-boiler of the present utility model is when work, give three Gas Pipe supply combustion gas by combustion gas trunk line 505, blower fan 108 is delivered to air in each air arm 602 by gas main duct 603, again by 601 ejections of air outlet slit end, and by the combustion gas of Gas Pipe 501 ejections that are positioned at air outlet slit end 601, just be blown to furnace wall, the corresponding flame of lighting by burner 2 is also with regard to the heat(ing) coil 104 of tray for combustion on body of heater 1 inwall, the heat(ing) coil 104 of this programme interior mobile be Medium Oil, the oil after heating is incubated to relevant device by EGR 105.This programme is installed refractory material 102 between heat(ing) coil 104 and body of heater 1, for the protection of furnace wall, be not subjected to temperatures involved, and this mode improves the service life of body of heater 1, and has reduced the temperature around boiler.But the Gas Pipe of this programme design is than the solar term 50～60M per hour of the full-automatic nozzle on market ³, increased air distribution equipment and can be according to the air quantity regulating flame, and the direct radiation heating coil pipe of flare, significantly improved the thermal efficiency, saved great amount of cost.

as Fig. 3, 4, shown in 5, burner 2 of the present utility model adopts the compound working method of oil gas, comprise the oil pipe 201 that oil is provided, be enclosed within the outer tracheae 206 that combustion gas is provided of oil pipe 201, promising oil pipe 201 is set between described tracheae 206 and oil pipe 201 sleeve pipe 204 of combustion air is provided, oil pipe 201 is movably arranged in sleeve pipe 204 by the oil pipe brace rod 207 that is fixedly installed on the outer surface, described sleeve pipe 204 is by being fixedly installed inclination blade 208 and tracheae 206 inner surface sliding-contacts on the outer surface, be provided with the gas box 4 that communicates with combustion gas at the inlet end place of tracheae 206, be outside equipped with the bellows that combustion air is provided 210 that tracheae 206 is included at tracheae 206, have the air inlet 202 that enters for air and the flame jet 203 corresponding with the tracheae outlet side on bellows 210, the flame eye 10 of locating to be provided with igniter 9 and detecting the state that catches fire in the outlet side of tracheae 206.

During work, the oil that is used for burning enters oil pipe 201 by the oil pipe oil inlet end, combustion gas enters gas box 4 by the fuel gas inlet 401 of gas box 4, enter the tracheae inlet end by gas box 4 again, utilize igniter 9 first oil drop to be fired, the recycling fuel oil is lighted the combustion gas of tracheae 206 ejections, and this moment, fuel oil both can play the effect of lighting combustion gas, also can play the effect into gas-fired combustion-supporting.Sleeve pipe 204 is arranged between oil pipe 201 and tracheae 206 and can also can makes the oil of ejection and combustion gas form the premix state for oil pipe 201 provides combustion air, and catching fire of assurance oil, combustion gas stablized and the raising combustion efficiency.The inclination blade 208 that is arranged on sleeve pipe 204 outer surfaces can make combustion gas in tracheae 206 in the tracheae port weak backflow because rotation forms of giving vent to anger, and is conducive to the stable of oil pipe 201, tracheae 206 exit flames.Utilize the movable oil pipe of installing of oil pipe brace rod 207 201 not only convenient fixedly oil pipe 201 position but also facilitate oil pipe 201 to extract maintenances out.Can detect oil pipe or the tracheae that burning does not occur by flame eye 10, in order to improve, safeguard.

As shown in Figure 4, in order to improve the premixed effect of oil and combustion gas, inclination blade 208 of the present utility model is 30～60 degree with the axial line angle of sleeve pipe 204.Inclination blade 208 is fixed on sleeve pipe 204 outer surfaces in the mode of spiral, and the less later stage eddy flow of angle of itself and sleeve pipe 204 axial lines is just larger, therefore can adjust according to actual needs the angle of inclination blade 208, to reach suitable ignition temperature.The adjustment with air inflow of entering for convenience of auxiliary air, oil pipe oil inlet end of the present utility model is positioned at outside sleeve pipe 204, be provided with auxiliary-air intake mouth 205 on sleeve pipe 204 inlet end corresponding with the oil pipe oil inlet end, auxiliary-air intake mouth 205 is vertical with sleeve pipe 204, and the air inlet pipe end face of sleeve pipe 204 is movably fixed to oil pipe 201 on the axial line of sleeve pipe 204, and sleeve pipe 204 other ends are movably fixed to oil pipe 201 on the axial line of sleeve pipe 204 by the oil pipe brace rod 207 that is fixed on the oil pipe outer surface.This programme utilizes the end face of oil pipe brace rod 207 and sleeve pipe 204 oil pipe 201 to be fixed on the axial line of sleeve pipe 204, and is unified with the gap of sleeve pipe 204 to guarantee oil pipe 201, and makes the combustion air of the sleeve pipe port of export consistent on the impact of oil pipe flame.Auxiliary-air intake mouth 205 is set can adjusts the inlet of combustion air.

As shown in Figure 3, for the air inflow that improves combustion gas and the combustion flame intensity of combustion gas, the utility model axially evenly is provided with a plurality of circumferential tracheaes 7 at tracheae 206 excircles, each circumferential tracheae inlet end 701 is positioned at gas box 4, and circumferentially tracheae outlet side 705 is separately fixed on the outer surface of a circumferential stationary pipes 702.Each circumferential tracheae 7 is hollow circular-tube, its circumferential tracheae inlet end 701 directly communicates with gas box 4, gas box once can be discharged enough combustion gas according to quantity and the caliber of circumferential tracheae like this,, realize to control the purpose of fuel gas buring degree, adopt the mode of the circumferential tracheae of circumferential arrangement to facilitate the oil pipe combustion gas of igniting.When gaseous-pressure is low or tolerance when not enough, can utilize the circumferential tracheae quantity of increase or flow to improve the discharge capacity of combustion gas, when gaseous-pressure is large or tolerance when sufficient, can reduce circumferential tracheae quantity or reduce each circumferential tracheae flow and stablize fuel gas buring, the temperature of burner or flame are controlled in setting range.For strengthening the fixed effect of circumferential tracheae and circumferential stationary pipes, avoid simultaneously affecting the flame of circumferential tracheae, the outer surface of circumferential stationary pipes 702 of the present utility model is fixedly connected with each circumferential tracheae outlet side 705 respectively by the radial reinforced rib 703 that is fixedly installed, and utilizes connection gusset 704 to be connected and fixed between each circumferential tracheae outlet side 705.Can not be subjected to the impact of gaseous-pressure and uninterrupted by each the circumferential tracheae after above-mentioned fixing, thereby make the flame of ejection more stable.According to different service conditions, circumferential tracheae quantity of the present utility model is the 3-8 root.

as shown in Figure 3, for combustion gas in convenient control gas box enters the flow of each circumferential tracheae, and then the size of control combustion device flame, gas box 4 of the present utility model is positioned at oil pipe oil inlet end one side and is provided with gas-flow regulator 3, described gas-flow regulator 3 comprises that is enclosed within the outer stationary pipes 301 of sleeve pipe, and be enclosed within the adjustable pipe 302 of the outer and length of stationary pipes 301 less than stationary pipes 301, adjustable pipe 302 is slidably mounted on outside stationary pipes by the axostylus axostyle 305 that two ends are separately fixed on stationary pipes 301, be fixed with adjusting ring 307 on adjustable pipe 302, be equipped with on adjusting ring 307 side relative with gas box 4 and each circumferential tracheae inlet end 701 positions and adjusting rod 303 corresponding to quantity, the sidewall that the other end of adjusting rod 303 passes gas box 4 enters in gas box 4, be positioned on the adjusting rod termination of gas box 4 and be provided with the taper regulating block 304 corresponding with circumferential tracheae inlet end 701 diameters.

During use, controlling the relative stationary pipes of adjustable pipe advances or retreats, be fixed on all adjusting rods meeting advanced in unison on the adjusting ring on adjustable pipe or retreat, and advancing or retreating of adjusting rod just drives the taper regulating block and makes corresponding sports, the vertex of a cone of the taper regulating block of its front end will enter each circumferential tracheae inlet end when adjusting rod advances, along with advancing to of adjusting rod finally seals circumferential tracheae inlet end always, the inlet of its combustion gas can be gradually reduced to fully to be broken off, and then only has tracheae to supply gas firing.When adjustable pipe was moved round about, entering circumferential endotracheal gas quantity can be increasing, finally reaches full load condition, and the flame of burner also can change thereupon in the motion process of adjustable pipe.Utilize the taper regulating block to insert the interior relative position of circumferential tracheae inlet end, can control and enter circumferential tracheae gas flow, thereby reach the purpose of controlling final flame size, and adjusting rod and gas box sealed sliding are dynamically connected, can avoid gas leakage conveniently adjusted bar motion again, utilization can be slided on stationary pipes adjustable pipe can be controlled all adjusting rod motions simultaneously.Use gas-flow regulator can easily realize the control of gas flow.For convenience of the fine setting of gas-flow regulator to gas flow, the utility model is equipped with the threaded adjusting bar 306 of regulating adjustable pipe displacement on adjustable pipe 302.Can control the displacement and the adjustable pipe position of locating after moving of threaded adjusting bar 306 by adjusting nut, and the displacement of threaded adjusting bar just drives the movement of adjustable pipe, thereby realize the fine setting of gas flow.

Further, the Synchronization Control of 307 pairs of each adjusting rods 303 of adjusting ring can be regulated separately specific to each, namely utilize the adjusting rod 303 that can independently control to go to control the gas flow size of corresponding circumferentially tracheae 7, thereby realize controlling the purpose of circumferential tracheae 7 open quantity.Concrete structure can be in the following way: each adjusting rod 303 with adjusting ring 307 for being threaded, can realize the displacement of this adjusting rod relative adjustment circle 307 by turning corresponding adjusting rod 303, thereby realize 303 pairs of relatively circumferentially gas flow controls of tracheae 7 of single adjusting rod, said structure and working method do not affect the control mode of adjustable pipe integrated moving.

as Fig. 3, shown in 5, in order to make oil and the rear effect stability of combustion gas mixing burning, the utility model arranges flame holder 8 on the corresponding end of tracheae 206 and oil pipe 201 and flame jet 203, described flame holder 8 comprises oil pipe segmentation 801, be enclosed within the outer sleeve pipe segmentation 802 of oil pipe segmentation 801, be enclosed within the outer tracheae segmentation 803 of sleeve pipe segmentation 802, be enclosed within the outer steady flame tube 804 of tracheae segmentation 803, described steady flame tube 804 is arranged in circumferential stationary pipes 702, wherein: oil pipe segmentation 801 is movably fixed in sleeve pipe segmentation 802 by the oil pipe brace rod 207 that is fixed on outer surface, sleeve pipe segmentation 802 is by fixing inclination blade 208 and tracheae segmentation 803 inner surface movable contacts on the outer surface, tracheae segmentation 803 is connected with the air blade 209 that tracheae segmentation outer surface and the flame tube inner surface of being connected are fixed respectively by two ends with steady flame tube 804, steady flame tube 804 and circumferentially stationary pipes 702 gaps installations, described oil pipe segmentation 801, sleeve pipe segmentation 802 and tracheae segmentation 803 are respectively by metal hose 806 and corresponding oil pipe 201, the port of export that sleeve pipe 204 is connected with tracheae connects.Adjust for convenience flame direction, stable connection plate 805 between described circumferential tracheae 7 and bellows 210 inwalls, described steadying plate 805 1 sides are with circumferential tracheae outlet side 705 or is connected gusset 704 and fixes, another side be arc-shaped side and with the flame jet inner surface movable contact of bellows 210.Adopt the mode of arc movable contact, can be when needed with the passive adjustment certain angle in flame holder up and down.

The burner of this programme has three kinds of occupation modes;

One, the combustion-supporting mode of pure oil drop fire:

Combustion air enters from the inlet port of bellows, spray from flame jet, the flow through air of flame holder, the water conservancy diversion that is subject to blade produces rotation, form the weak backflow that produces due to rotation after flame holder, be conducive to the flame stabilization zone of oil pipe, tracheae, the igniter oil pipe that at first ignites, form stable oil pipe torch, reach the purpose of ignition trigger or combustion-supporting steady combustion.

Two, the gas igniting combustion supporting is mixed the burning mode:

combustion air enters from the air inlet of bellows, spray from flame jet, the flow through air of flame holder, be subject to the water conservancy diversion of blade and produce rotation, and reflux a little less than forming after flame holder, generation is conducive to oil pipe, the stability region of tracheae flame, the ignite oil of oil pipe ejection of igniter, form stable oil pipe torch, tracheae is introduced combustion gas from gas box, rotary-jet after the inclination blade, and by the oil pipe torch, ignited, participate in burning, after tracheae is stable, inactive oil pipe, open circumferential tracheae by gas-flow regulator, circumferentially the combustion gas of tracheae ejection is ignited by tracheae, form the torch of complete gas firing, finally realize the gas firing ignition trigger, combustion-supporting steady combustion or mix burning.

Three, in the situation that system air demand abundance, also capable of saving fuel oil fully, complete igniting, combustion-supporting and mix all processes of burning with pure combustion gas.Combustion air enters from the air inlet of bellows,, from flame jet ejection, the air of the flame holder of flowing through, be subject to the water conservancy diversion of blade and produce rotation, and form the weak backflow that produces due to rotation after flame holder, be formed with the fire area that is beneficial to the tracheae flame stabilization.The combustion gas that tracheae enters from gas box, spray and with air, mix through front end flame spray orifice 203, the combustion gas that igniter will be mixed in ignition zone is ignited, formation center gas burning torch, after the tracheae ignition is stable, by gas-flow regulator, open circumferential tracheae, circumferentially tracheae is ignited by tracheae, form the torch of complete gas firing, realize gas firing ignition trigger, combustion-supporting steady combustion or mix burning.

the above is only preferred embodiment of the present utility model, not the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, anyly be familiar with the technical staff of this patent within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned prompting is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of the utility model scheme.

Claims

1. gas fired-boiler by coal-fired boiler reform, comprise the flue (106) that the fire door (109) that arranges on body of heater (1) and body of heater side and body of heater top arrange, be provided with heat(ing) coil (104) on the furnace body inside wall, it is characterized in that, be provided with gas combustion apparatus (5) and air distribution device (6) that thermal source is provided in described body of heater, described gas combustion apparatus comprises three Gas Pipe (501) that are vertically mounted on furnace bottom (101), described air distribution device comprises three the air arms (602) that are vertically mounted on furnace bottom, the air outlet slit end (601) of air arm become with air arm (602) 90 the degree right angles and towards the furnace body inside wall, three air outlet slit ends (601) are positioned at same plane and space 120 degree, the openend of each Gas Pipe (501) inserts respectively in an air openings end (601), be respectively arranged with the burner (2) of lighting combustion gas in each air outlet slit end (601).

2. a kind of gas fired-boiler by coal-fired boiler reform as claimed in claim 1, it is characterized in that, described heat(ing) coil (104) is close on the inwall of body of heater mutually in the mode of coiling, be provided with EGR (105) on body of heater, EGR (105) circulates (104) interior media of the heat(ing) coil in body of heater and external equipment.

3. a kind of gas fired-boiler by coal-fired boiler reform as claimed in claim 1, it is characterized in that, described burner (2) comprises the oil pipe (201) that oil is provided, being enclosed within oil pipe provides the tracheae of combustion gas (206) outward, between described tracheae (206) and oil pipe (201), promising oil pipe is set the sleeve pipe of combustion air (204) is provided, oil pipe (201) is movably arranged in sleeve pipe (204) by the oil pipe brace rod (207) that is fixedly installed on the outer surface, described sleeve pipe (204) is by being fixedly installed inclination blade (208) and the sliding-contact of tracheae inner surface on the outer surface, be provided with the gas box (4) that communicates with combustion gas at tracheae inlet end place, be outside equipped with the bellows that combustion air is provided (210) that tracheae is included at tracheae (206), have the air inlet (202) that enters for air and the flame jet (203) corresponding with the tracheae outlet side on bellows (210), locate the flame eye (10) that is provided with igniter (9) and detects the state that catches fire in the tracheae outlet side.

4. a kind of gas fired-boiler by coal-fired boiler reform as claimed in claim 3, it is characterized in that, the oil inlet end of described oil pipe (201) is positioned at outside sleeve pipe (204), be provided with auxiliary-air intake mouth (205) on sleeve pipe (204) inlet end corresponding with the oil inlet end of oil pipe (201), auxiliary-air intake mouth (205) is vertical with sleeve pipe (204), and the end face of the inlet end of sleeve pipe (204) is movably fixed to oil pipe (201) on axial line, sleeve pipe (204) other end is movably fixed to oil pipe (201) on axial line by the oil pipe brace rod (207) that is fixed on oil pipe (201) outer surface.

5. a kind of gas fired-boiler by coal-fired boiler reform as claimed in claim 4, it is characterized in that, described tracheae (206) excircle axially evenly is provided with a plurality of circumferential tracheaes (7), each circumferential tracheae inlet end (701) is positioned at gas box (4), and circumferentially tracheae outlet side (705) is separately fixed on the outer surface of a circumferential stationary pipes (702), the outer surface of described circumferential stationary pipes (702) is fixedly connected with each circumferential tracheae outlet side (705) respectively by the radial reinforced rib (703) that is fixedly installed, utilize connection gusset (704) to be connected and fixed between each circumferential tracheae outlet side (705).

6. a kind of gas fired-boiler by coal-fired boiler reform as claimed in claim 5, it is characterized in that, described gas box (4) is positioned at oil pipe oil inlet end one side and is provided with gas-flow regulator (3), described gas-flow regulator (3) comprises that is enclosed within the outer stationary pipes (301) of sleeve pipe (204), and be enclosed within the adjustable pipe (302) of the outer and length of stationary pipes (301) less than stationary pipes, adjustable pipe (302) is slidably mounted on outside stationary pipes by the axostylus axostyle (305) that two ends are separately fixed on stationary pipes (301), be fixed with adjusting ring (307) on adjustable pipe (302), be equipped with on adjusting ring (a 307) side relative with gas box (4) and each circumferential tracheae inlet end (701) position and adjusting rod (303) corresponding to quantity, the sidewall that the other end of adjusting rod (303) passes gas box (4) enters in gas box, be positioned on the adjusting rod termination of gas box (4) and be provided with the taper regulating block (604) corresponding with circumferential tracheae inlet end (701) diameter.

7. a kind of gas fired-boiler by coal-fired boiler reform as claimed in claim 1, it is characterized in that, described Gas Pipe (501) is connected with combustion gas trunk line (505) respectively, air arm (602) is connected with gas main duct (603) respectively, is provided with flow control valve (503) on each Gas Pipe and air arm.

8. a kind of gas fired-boiler by coal-fired boiler reform as claimed in claim 6, it is characterized in that, the blower fan (108) of strengthening air mass flow is installed on the gas main duct (603) of described air arm (602), is provided with master control valve (504) on described combustion gas trunk line (505).

9. a kind of gas fired-boiler by coal-fired boiler reform as described in claim 1 or 3, it is characterized in that, the Xiang Duan of described Gas Pipe (501) is divided into twice U-shaped arm (502), and the port of export of U-shaped arm is connected to form the dual circuit input with burner (2) respectively.

10. a kind of gas fired-boiler by coal-fired boiler reform as claimed in claim 1, is characterized in that, described flue (106) is double-decker, and double-decker inside is connected with recirculated water (107).