CN1693813A - Fuel oil (gas) back burning radiation jet heet pipe hot blast furnace - Google Patents

Abstract

The invention relates to a fuel oil (gas) strile-back radiation jet heat pipe blast stove that is the high temperature radiation jet impact heat exchanger. Reverse fire channels combine the new type high efficiency high temperature hot air indirect heating blast heater. The smoke form the burning hearth would enter into the smoke channel located at the down side section of the hot pipe heat exchanger from the reverse fire channel, heating the hot pipe heat absorbing section that extends into the smoke channel. And the working medium would be vaporized after absorbing vaporization latent heat. Vacuum phase changes to the hot pipe fin heat releasing section in the hot air generating room in pipe board. And the air would be fast heated at the entrance of air port. The hot air with the temperature of 200-300 degree centigrade would entry into the heating cylinder. And the air would be heated after several times of high temperature radiation. Finally, it would be connected to the hot air application occasion. The heat exchanger intensity would be improved by impacting the outside high temperature surface by high speed air flow. The temperature of hot air could achieve 300-600 degree centigrade. The smoke releasing temperature is below 180 degree centigrade. The heat exchange efficiency would achieve 90%.

Description

Fuel oil (gas) back burning radiation jet heet pipe hot blast furnace

Technical field:

The present invention relates to prepare the heat power supply device of 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.

Summary of the invention:

The objective of the invention is to design a kind of technical deficiency that above-mentioned multiple hot-blast stove exists that overcomes, 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 the strile-back radiation jet heat pipe hot-blast stove of a kind of novelty, efficient, high temperature, to remedy the blank of high temperature hot-blast furnace in 200-600 ℃.

Technical scheme of the present invention: the present invention is by heat exchange of heat pipe and the back of the body burner thorax radiation jet heat exchanger that places one side or bottom, by the anti-quirk tandem compound all-in-one-piece novel and high-efficiency high-temperature heat pipe hot-blast stove of burner hearth bottom.

It is the hot-air generation chamber that heat exchange of heat pipe of the present invention is divided into top by tube sheet, the bottom side, bottom 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 merge in the cartridge heater of anti-quirk, after enter drive end bearing bracket and converge air duct, implement the radiation jet heat exchange.

Before back of the body burner thorax radiation jet heat exchanger of the present invention is reached by stack shell, rear end cap, on rear end cap burner hearth lower wall, have anti-quirk with the flue series connection, the same burner hearth of anti-quirk, flue sealing assembly welding, on drive end bearing bracket, there is burner to take over, 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 to return behind the outer cartridge heater of anti-quirk by the heat exchange of heat pipe heated hot air heated and enter the next stage drive end bearing bracket 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 present invention compared with prior art has following technique effect:

1, this furnace structure advanced person, rationally distributed in the 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 can reach 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 gardens, 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 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 back of the body combustion formula structure, and combustion flame 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 back burning radiation jet heet pipe hot blast furnace 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:

Fig. 1, look cutaway view for master of the invention process.

Fig. 2, be the invention process mansion cutaway view.

Fig. 3, be A-A cutaway view of the invention process.

The specific embodiment:

Referring to Fig. 1, Fig. 2, Fig. 3, the invention process mainly contains: 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.

In the invention process, burning is taken over (2) off-centre and is installed on burner hearth (3) drive end bearing bracket (4), burner (1) combustion flame advances anti-quirk (6) by differential pressure action from the combustion of rear end cap (5) back of the body and enters flue (9) in burner hearth (3), heat pipe (10) endotherm section through the different working medium of many rows absorbs heat, the vaporization of working medium vacuum and low temperature, 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 fuel oil (gas) back burning radiation jet heet pipe hot blast furnace of the embodiment of the invention 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 oil (gas) strile-back radiation jet heat pipe hot-blast stove comprises 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 composition; 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 oil of claim 1 (gas) back burning radiation jet heet pipe hot blast furnace, it is characterized in that other heat exchange of heat pipe left side or the right side of placing behind the burner hearth, also can be arranged on and become superposing type below the heat exchange of heat pipe.

3, by the described fuel oil of claim 1 (gas) back burning radiation jet heet pipe hot blast furnace, 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 garden 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 garden annular slab 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 oil of claim 1 (gas) back burning radiation jet heet pipe hot blast furnace, it is characterized in that anti-quirk is the passage of burner hearth with the flue tandem compound, the heating barrel that converges to anti-quirk by the heat exchange of heat pipe heated hot air heated returns and enters drive end bearing bracket and converge air duct.

5, by the described fuel oil of claim 1 (gas) back burning radiation jet heet pipe hot blast furnace, 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 a 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 is produced by the hot-air generation chamber converges the remittance air duct that enters drive end bearing bracket with the hot blast that lower air duct flue fin produces in the cartridge heater import of anti-quirk.

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