CN2161823Y

CN2161823Y - High pressure multistage inside/outside mixing atomized oil spray gun

Info

Publication number: CN2161823Y
Application number: CN 93237196
Authority: CN
Inventors: 邵权有
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-03
Filing date: 1993-07-03
Publication date: 1994-04-13
Anticipated expiration: 2003-07-03

Abstract

The utility model relates to a high pressure multistage inside and outside mixing atomization oil spray gun, which is used for fuel oil industrial kilns. The utility model is composed of an oil feeding pipe, a steam feeding pipe, an oil control bar, an air pipe, an expanding pipe, a damping oil spray head, an air atomizing chamber and a nozzle. Fuel oil and steam enter the expanding pipe to be mixed and atomized for the first time. A convex head on the damping oil spray head is impacted to accomplish the second mixing. Oil steam mixture is impacted with the steam in the damping oil spray head to accomplish the third mixing. The fuel oil, the steam and air are mixed and atomized in the air atomizing chamber for the fourth time.

Description

High pressure multistage inside/outside mixing atomized oil spray gun

The utility model relates to a kind of burner of forging on the fuel oil Industrial Stoves such as making stove, heat-treatment furnace, tunnel cave, particularly heavy oil combustion, inside and outside mixed aerosol oil atomizer gun of high-pressure multi-stage of residual oil of being used in.

The known oil atomizer gun that is used on the fuel oil Industrial Stoves has low pressure fuel injector rifle (blast 7000Pa) and high pressure fuel injector rifle (about vapour pressure 0.5MPa).Better when the low pressure fuel injector rifle uses light oil or No. 200 heavy oil, but relatively poor because of fuel transfer pressure when using the big heavy oil of residual oil or viscosity greater than the oil pressure effect that oil atomizer gun requires; The high pressure fuel injector rifle is that example illustrates its operation principle with the JBP type: fuel oil and steam enter into hybrid chamber with constant pressure reduction by a plurality of apertures and carry out the mixing first time, the impact damping nozzle tip carries out the second time and mixes then, oily vapour mixture after the ejection of annulus again with the air atomizing chamber the rotation combustion air carry out mixed aerosol for the third time.Its shortcoming is that oil, steam pressure difference are strict, and not so the stifled vapour phenomenon of vapour locking oil or oil can take place the high 0.1MPa of vapour pressure constant proportion oil pressure.So need constantly regulate loine pressure when using this oil atomizer gun, troublesome poeration, it is reliable inadequately to work.

Task of the present utility model provides a kind of heavy oil combustion, residual oil and light oil of being applicable to, be difficult for to produce that oily vapour is stifled, simple to operate mutually, the oil atomizer gun of reliable operation, energy-saving and pollution-reducing.

Task of the present utility model realizes in the following manner: from the fuel oil of fuel feed pump ejection (0.4～0.8MPa) with steam supply pipe high steam (0.4～0.8MPa) enters into convergent divergent channel by the annulus carries out mixing the first time, atomizing; Because convergent divergent channel has the speedup depressurization, can make fuel-oil atmozation or become little oil droplet, so help the mixing and the atomizing of oily vapour.The end of convergent divergent channel is the damping nozzle tip, the oily vapour mixture impact nozzle tip of process mixed once atomizing makes the further broken refinement of droplet in the oily vapour mixture, realize mixing the second time of oily vapour, in nozzle opening, mix for the third time then with the steam bump, oil vapour mixture carries out mixed aerosol the 4th time, ejection burning at last from the indoor rotary air of nozzle opening ejection back and air atomizing.The variation of angle has constituted updraft fuel injection nozzle and flat flame fuel injection nozzle between combination between the utility model and the dissimilar air supply device and nozzle opening and the axis.

The utility model is further explained below with reference to accompanying drawing.

Fig. 1 is the inside and outside mixed aerosol oil atomizer gun schematic diagram of high-pressure multi-stage;

Fuel feed pump (1) and convergent divergent channel (6) are installed in the inside of steam supply pipe (3), the end of convergent divergent channel (6) is damping nozzle tip (12), damping nozzle tip (12) is installed in the end of steam supply pipe (3), the end of fuel feed pump (1) is oil-out (4), control beam hanger (2) control fuel delivery, oil-out (4) extend into the inlet (5) of convergent divergent channel (6), between the inlet (5) of oil-out (4) and convergent divergent channel (6) annulus is arranged, this annulus makes the inner chamber UNICOM of steam supply pipe (3) and convergent divergent channel (6).A narrow positions (7) is arranged on the convergent divergent channel (6), and the inner chamber that begins convergent divergent channel (6) from narrow positions (7) enlarges gradually.Fuel oil and steam enter into convergent divergent channel (6), carry out the fuel oil first time, vapor mixing atomizing.Because convergent divergent channel (6) has the speedup decompression, help the mixed aerosol of oil, vapour.Because steam is to enter into convergent divergent channel (6) by the annulus between oil-out (4) and the inlet (5), so this structure is compared with the structure that enters in the hybrid chamber by a plurality of apertures, be difficult for taking place stifled vapour of oil or vapour locking oil phenomenon, the permission excursion of oil, steam pressure difference has enlarged several times to tens times, do not need often to adjust oily steam pressure difference, so simple to operate, reliable operation.Plush copper (8) through on the oily vapour mixture impact damping nozzle tip (12) of the mixed aerosol first time makes the further broken refinement of droplet in the oily vapour mixture, has finished for the second time oily vapour and has mixed.The root that is positioned at plush copper (8) on damping nozzle tip (12) has an annular groove (10), along the circumferencial direction of damping nozzle tip (12) distributing identical hole of quantity (9) and nozzle opening (11), locate to communicate at annular groove (10) with nozzle opening (11) in every pair of hole (9), hole (9) communicates with steam supply pipe (3), and nozzle opening (11) communicates with air atomizing chamber (15).Oil vapour mixture enters into nozzle opening (11) by annular groove (10), and the steam bump with from the hole (9) are come carries out oily for the third time vapour and mixes, and is sprayed onto air atomizing chamber (15) from nozzle opening (11) then.A plurality of tangential holes (14) are arranged on air hose (13), combustion air enters into air atomizing chamber (15) from tangential hole (14), rotary combustion-supporting air is carried out the 4th time mixed aerosol, promptly outer mixed aerosol with the oily steam fog gasification that sprays in the outside of steam supply pipe (3) from nozzle opening (11).Last fuel oil, steam, Air mixing atomization gas are burnt after spout (16) ejection.The utility model carries out mixed aerosol in three times, once outer mixed aerosol in the course of the work altogether.

Plush copper (8) on the damping nozzle tip (12) is to be the centrum of bus with the circular arc or to be the centrum of bus with the straight line, straight edge line centrum plush copper low cost of manufacture; The arc generatrix body plush copper of discussing makes oily vapour mixture projected angle of impact increasing the steam that comes from hole (9) and the nozzle opening (11), helps the two and mixes better.

Between nozzle opening (11) and the axis (17) an angle α is arranged, the span of α is that 0 degree is to 60 degree.

The utility model is got different values and can be constituted dissimilar fuel injection nozzles with the combination of dissimilar air supply device, α; α can constitute torch formula fuel injection nozzle in 0 degree value to the 60 degree scopes; α can constitute the flat flame fuel injection nozzle in 30 degree value to the 60 degree scopes.

Claims

1, be used for the inside and outside mixed aerosol oil atomizer gun of high-pressure multi-stage on the fuel oil Industrial Stoves, has fuel feed pump (1), control beam hanger (2), steam supply pipe (3), convergent divergent channel (6), damping nozzle tip (12), air hose (13), air atomizing chamber (15), spout (16), it is characterized in that: fuel feed pump (1) and convergent divergent channel (6) are installed in the inside of steam supply pipe (3), the end of convergent divergent channel (6) is damping nozzle tip (12), damping oil spout tube head (12) is installed in the end of steam supply pipe (3), the end of fuel feed pump (1) is oil-out (4), oil-out (4) extend into the inlet (5) of convergent divergent channel (6), between oil-out (4) and the inlet (5) annulus is arranged, this annulus makes the inner chamber UNICOM of steam supply pipe (3) and convergent divergent channel (6), a narrow positions (7) is arranged on the convergent divergent channel (6), enlarge gradually from the inner chamber of narrow positions (7) beginning convergent divergent channel (6), a plush copper (8) is arranged on the damping nozzle tip (12), root in plush copper has an annular groove (10), along the circumferencial direction of damping nozzle tip (12) distributing identical hole of quantity (9) and nozzle opening (11), every pair of hole (9), nozzle opening (11) is located to communicate at annular groove (10), hole (9) communicates with steam supply pipe (3), nozzle opening (11) communicates with air atomizing chamber (15), a plurality of tangential holes (14) are arranged on the air hose (13), and the end of air hose (13) is spout (16).

2, the inside and outside mixed aerosol oil atomizer gun of high-pressure multi-stage according to claim 1 is characterized in that: between nozzle opening (11) and the axis (17) an angle α is arranged, the span of α is that 0 degree is to 60 degree.

3, require mixed aerosol oil atomizer gun inside and outside the described high-pressure multi-stage according to right 1, it is characterized in that: plush copper (8) is the arc generatrix body of discussing.

4, the inside and outside mixed aerosol oil atomizer gun of high-pressure multi-stage according to claim 1 is characterized in that: plush copper (8) is the straight edge line body of discussing.