CN200970706Y - Oil burning and gas burning back burning radiation jet flow heat pipe hot-air furnace - Google Patents

Abstract

The fuel gas returning burn eradiating cascade heating tube hot blast furnace is a fire temperature hot stove which is made of a heat exchanger and an impact radiation heat exchanger, connected by fire returning paths. The flue gas of the eccentric combustion furnace goes through the fire returning paths into the flue pipe of the heat exchanger, heating the heat pipe which is a part in flue, the heat pipe gasifies, through a vacuum phase transition goes to the hot finned tube, releases the latent heat of condensation under the washing of the fan airflow to rapidly heat air, with the air heated in the flue, and finned tube, then goes into the fire returning paths, and a heating canister, into the air returning canister of the front cover of the furnace hearth to jet the front cover through the jet bore of the front jet board, goes into the furnace hearth to jet the outer wall of the hearth step by step through the air returning canister and spray nozzle of the jetting tube plate board, the air is again and again heated by the radiation heating, finally jets the outer wall of the rear cover through jetting tube plate board of the rear cover of the air returning canister, after radiation heat transferred, 400 to 600 degrees Celsius heated air is connected to the exit of hot air for use.

Description

The fuel-firing gas-firing strile-back radiation jet heat pipe hot-blast stove

Technical field:

The utility model relates to the heat power supply device for preparing hot-air, it needing to be widely used in hot-air heated technology occasion: drying of wood moulding, the shaping and drying of textile dyeing and finishing industry, the vulcanization of rubber, chemical industry polymerization concentration and evaporation, the baking-curing of coating process, oil field oil (gas) collection is failed heating of coil pipe, the heat drying of building materials building ...

Background technology:

The hot-blast stove of existing preparation hot-air has or not pipe box cartridge type, shell and tube and Hot Blast Furnace With Heat Pipes, the first two kind is the gas-gas heat convection of metallic plate, pipe sensible heat, because gas-gas coefficient of heat transfer is low, heat exchange efficiency is low, hearth wall surface temperature height, influence the service life and the safety of hot-blast stove, improve the thermal efficiency, metal consumption is big, simultaneously because thermal (temperature difference) stress is inconsistent, cause tube sheet cracking, the flue gas string has accident to take place when mixing.

00202400.4) and fuel oil (gas) heat pipe hot-blast warming stove (patent No.: 02242161.0) adopt heat-tube vacuum phase transformation superconduction to conduct heat Chinese patent fuel oil (gas) heat pipe hot-blast stove (patent No.:, overcome the first two and planted the defective of hot-blast stove, the thermal efficiency can reach about 85%, but there is the former big burner hearth adiabatic combustion, latter's burner hearth flue all is arranged on the air that flow in the air channel and washes away heat convection down, all exist the hyperthermia radiation heat energy utilization of burner hearth not enough, the problem that hot blast temperature is not really high.

The utility model content:

The purpose of this utility model is a kind of technical deficiency that overcomes above-mentioned multiple hot-blast stove existence of design, give full play to the efficient advantage of the heat exchange of heat pipe phase transition of vacuum superconduction heat exchange that has heat pipe hot-blast stove now and the alliance between giants that the radiation jet heat exchanger is installed at high-temperature burner hearth, develop a kind of strile-back radiation jet heat pipe hot-blast stove of novel, efficient, high temperature, to remedy the blank of high temperature hot-blast furnace in 200-600 ℃.

The technical solution of the utility model: utility model is by heat exchange of heat pipe and the radiation of burner hearth efflux heat-exchanger that strile-backs that places one side or bottom, by the new and effective high-temperature heat pipe hot-blast stove of anti-quirk tandem compound all-in-one-piece of burner hearth front side.

It is the hot-air generation chamber that heat exchange of heat pipe described in the utility model is divided into top by tube sheet, lower front side is with the flue of anti-quirk interface assembly welding, heat pipe is climbed root sealing edge with two asbestos of taper snap ring and is enclosed within the tube sheet fork round, be welded with strip fin at the flue outer wall, place the lower air duct below the tube sheet, the hot-air generation chamber by the hot blast of heat pipe heating with the heating of lower air duct flue fin hot blast just enter the remittance air duct, the heat exchange of enforcement radiation jet after merging in the cartridge heater of anti-quirk.

Before the radiation of burner hearth efflux heat-exchanger that strile-backs described in the utility model is reached by stack shell, rear end cap, at the anti-quirk that on the burner hearth lower wall at drive end bearing bracket 100mm place, has with the flue series connection, the same burner hearth of anti-quirk, flue sealing assembly welding, the partial center place has burner to take on drive end bearing bracket, one determining deviation place is provided with preceding jet tray at the distance drive end bearing bracket, before the jet tray diameter ditto converge the air duct external diameter and equate, with its seal welding, the uniform spray-hole of scope that on jet tray, equates with the drive end bearing bracket external diameter, outside burner hearth, there be concentric interior that certain interval arranged to be spraying canister, in for converging air duct, be outward cartridge heater, spraying canister is separated by multistage Z type ring aerofoil with the remittance air duct; Enter by the heat exchange of heat pipe heated hot air heated and to enter the next stage drive end bearing bracket after the outer cartridge heater import of anti-quirk and converge after jet tray spray orifice jet flow is impacted the heat exchange of drive end bearing bracket outer wall behind the air duct in the past, enter burner hearth remittance air duct step by step, step by step through spraying canister plate jet impact hearth outer wall radiation heat transfer, enter rear end cap at last and converge air duct, receive by the hot-blast outlet flange of rear end cap spraying canister at last and use the hot-air occasion from back jet tray spray orifice jet impact rear end cap heat exchange.

The utility model compared with prior art has following technique effect:

1, this furnace structure advanced person, rationally distributed in anti-quirk and burner hearth high-temperature region, adopts air jet to impact the hearth outer wall heat exchange, reduce the boundary-layer of burner hearth outer surface heat exchange greatly, reduced heat transfer resistance, improved heat transfer intensity, the heat exchange efficiency height, the hot air temperature height of preparation; Adopt the heat exchange of heat pipe of different heat pipe combinations at the flue of senior middle school's low temperature flue gas heat exchange, heat-tube vacuum phase transformation superconduction heat exchange, heat exchange efficiency height, exhaust gas temperature are low, safe and reliable, simultaneously be welded with radiating fin at the flue outer wall, with placing lower air duct, thermal source makes full use of, and whole the radiation jet flow hot pipe air heating furnace thermal efficiency reaches 90%, and the highest hot blast temperature can reach 500-600 ℃.

2, the radiation of burner hearth efflux heat-exchanger is designed to four concentric circles, outer is cartridge heater, in for converging air duct, interior is spraying canister, in be burner hearth, adding hot-air compiles by uniform spray orifice jet flow on the spraying canister plate and impacts burner hearth and anti-quirk and the heat exchange of front and rear cover outer wall by converging air duct step by step after the cartridge heater heat absorption, every grade is converged air duct and spraying canister and is separated by Z-shaped ring aerofoil, ring aerofoil riser promptly is the spraying canister plate, adopt multistage radiation jet impingement heat transfer can reduce the influence that jet flow is impacted cross-current, guarantee the radiation jet heat transfer intensity; Remittance air duct, spraying canister can be several, and certain distance is arranged between each, form a plurality of remittance air ducts and spraying canister from front to back, and all shut with annular slab each spraying canister upper end and remittance air duct lower end, and the outlet of a last spraying canister communicates with the inlet of next remittance air duct.

3, burner hearth adopts the strile-back type structure, and the combustion flame flue gas flow is long, and sufficient combustion, radiation of burner hearth heat exchange temperature height, heat transfer intensity height, radiation jet hot blast temperature are than prior art hot air furnace hot air outlet temperature more than high 200-300 ℃.

4, the strile-back radiation jet heat pipe hot-blast stove structural configuration is flexible, and burner hearth can other place heat exchange of heat pipe left side or right side, also can be arranged on heat exchange of heat pipe flue bottom and become superposing type, and it is the same that it makes the heat exchange effect.

Description of drawings:

The master that Fig. 1 implements for the utility model looks cutaway view.

Fig. 2 implements the mansion cutaway view for the utility model.

The A-A cutaway view that Fig. 3 implements for the utility model.

The specific embodiment:

Referring to Fig. 1, Fig. 2, Fig. 3, utility model is implemented to mainly contain: burner 1, burner takes over 2, burner hearth 3, drive end bearing bracket 4, rear end cap 5, anti-quirk 6, heat exchange of heat pipe 7, hot-air generation chamber 8, flue 9, fin 10, lower air duct 11, heat pipe 12, air entering and returning mouth 13, tube sheet 14, remittance air port 15, remittance air duct 16, spraying canister 17, jet tray 18, spray-hole 19, cartridge heater 20, hot-blast outlet 21, blower fan 22, frame 23, heat-insulation layer 24, automatic control box 25, temperature sensor 26, smoke exhaust pipe 27, outlet flue 28.

During the utility model is implemented, burning is taken over (2) off-centre and is installed on burner hearth (3) drive end bearing bracket (4), burner (1) combustion flame is strile-backd from rear end cap (5) by differential pressure action in burner hearth (3) and enters flue (9) to burner hearth (3) is anterior through anti-quirk (6), heat pipe (10) endotherm section through the different working medium of many rows absorbs heat, the vacuum and low temperature vaporization, the latent heat of vaporization is transported to ratio-frequency welding fin heat pipe (12) heat release section that places hot-air generation chamber (8) with Ultrasonic wave like speed, blower fan (22) blasts hot-air generation chamber (8) with air from air entering and returning mouth (13), major part is washed away ratio-frequency welding fin heat pipe (12) heat release section, heat pipe discharges the latent heat of condensation, the Fast Heating air, little part enters the air of lower air duct (11) from strip hole, tube sheet (14) rear portion, the cartridge heater (20) that enters outside the anti-quirk (6) is converged in the remittance air port (15) that merges in heat exchange of heat pipe (7) with hot-air generation chamber (8) heated hot air heated after flue fin Convective Heating, enter the remittance air duct (16) of the drive end bearing bracket (4) of burner hearth (3) again, after impacting drive end bearing bracket (4) outer wall, spray-hole (19) jet flow of top jet tray (18) enters burner hearth (3) remittance air duct (16), converge through remittance air duct (16) step by step, by jet tray spray orifice (19) jet flow on the spraying canister (17) to burner hearth (3) outer wall, hot-air is become high-temperature hot air by radiation heating step by step, the remittance air duct (16) that enters rear end cap (5) at last impacts rear end cap (5) outer wall from spray-hole (19) jet flow of back jet tray (18), receives the hot-air occasion from high-temperature hot-air air outlet (21) at last; Flue gas is discharged by smoke exhaust pipe (27) outlet flue (28).

Whole the fuel-firing gas-firing strile-back radiation jet heat pipe hot-blast stove of the utility model embodiment is placed on the lower framework (23), for reducing radiation loss, shell at the hot-blast stove body has rock wool heat-preservation layer (24) insulation and outsourcing to foretell plate, air entering and returning mouth (13) flange in hot-air generation chamber (8) is equipped with hair-dryer, automatic control box (25) is arranged in that burner (1) front panel top is housed, the temperature sensor (26) that same hot-blast outlet (21) is located is carried out interlocking, realizes fully automatic operation.

Claims (5)

1, a kind of fuel-firing gas-firing strile-back radiation jet heat pipe hot-blast stove is made up of burner, burner hearth, front and rear cover, anti-quirk, heat exchange of heat pipe, smoke exhaust pipe, hair-dryer, air entering and returning mouth, high-temperature hot-air outlet; It is characterized in that burner hearth has three annular concentric air channels outward, form cartridge heater, remittance air duct and spraying canister plate, form the hyperthermia radiation efflux heat-exchanger with front and back end upper part of the cover jet tray, be composed in series novel and high-efficiency high-temperature heat pipe hot-blast stove by anti-quirk with the flue of tube sheet bottom, smoke exhaust pipe, the hot-air generation chamber on tube sheet top, senior middle school's low temperature heat pipe heat exchanger that heat pipe is formed.

2, by the described fuel-firing gas-firing strile-back radiation jet heat pipe hot-blast stove of claim 1, it is characterized in that it is the anti-quirk offside of deflection that burner on the burner hearth drive end bearing bracket is taken over, cause burner hearth pressure reduction, flame strile-backs to anti-quirk and enters flue.

3, by the described fuel-firing gas-firing strile-back radiation jet heat pipe hot-blast stove of claim 1, it is characterized in that the multi-stage annular air channel that the radiation of burner hearth efflux heat-exchanger is made up of the concentric circles of outer three different spacing of burner hearth, be spraying canister successively, remittance air duct and cartridge heater, the every grade of spraying canister and the air duct that converges are separated by z shape ring aerofoil, shut with the annular plate each remittance air duct lower end and jet flow tube upper end, last spraying canister outlet links to each other with next remittance air duct import, at ring aerofoil riser is the spraying canister plate that uniform spray-hole is arranged, the interval of forming by three plates equally at the front and rear cover top, same respectively spraying canister, remittance air duct and cartridge heater sealing assembly welding, nexine is a jet tray, its diameter is with remittance air duct equal diameters and with its sealing, jet tray with front and rear cover equal diameters plate face in uniform spray-hole, heated air compiles by converging air duct that spray-hole is sprayed onto the heat exchange of high temperature heat-transfer surface from the jet tray.

4, by the described fuel-firing gas-firing strile-back radiation jet heat pipe hot-blast stove of claim 1, it is characterized in that anti-quirk is the passage of burner hearth with the flue tandem compound, converge to the heating barrel assembly welding of air port with anti-quirk by the heat exchange of heat pipe heated hot air heated.

5, by the described fuel-firing gas-firing strile-back radiation jet heat pipe hot-blast stove of claim 1, it is characterized in that it is hot-air generation chamber and air entering and returning mouth that heat exchange of heat pipe is divided into top by tube sheet, the bottom is flue, smoke exhaust pipe, heat pipe is climbed in the root sealing edge casing board fork round with taper snap ring two road asbestos, the flue outer wall has strip fin, place the lower air duct of tube sheet rear portion strip air inlet, at the air entering and returning mouth blower fan is installed, the hot blast that the hot blast that is produced by the hot-air generation chamber produces with lower air duct flue fin converges in the cartridge heater import of anti-quirk and enters drive end bearing bracket and converge air duct.

Images