CN101324335A

CN101324335A - Inner mixing type two-stage atomized oil gun

Info

Publication number: CN101324335A
Application number: CNA2008100405178A
Authority: CN
Inventors: 肖江东
Original assignee: SHANGHAI NUOTEFEIBO COMBUSTION EQUIPMENT CO Ltd
Current assignee: SHANGHAI NUOTEFEIBO COMBUSTION EQUIPMENT CO Ltd
Priority date: 2008-07-14
Filing date: 2008-07-14
Publication date: 2008-12-17
Anticipated expiration: 2028-07-14
Also published as: CN101324335B

Abstract

An internal-mixing secondary atomized oil gun comprises sprinklers, an oil-steam mixing chamber, a gun body and a joint, which are connected with each other in sequence. The internal-mixing secondary atomized oil gun is characterized in that an annular adjusting ring and a gun core are arranged in the cavity of the gun body; a steam slit and an oil slit are formed like an annular Venturi tube; and the end section of the gun core is fixedly connected with a swirler through a fixing device. The speed of oil is increased in the oil slit, and simultaneously the oil is disturbed and torn drastically by asymmetrical toothed grooves formed on the inner surfaces on both sides of the oil slit. At the exit of the oil slit, the oil is further atomized by violent impact of high-speed and high-temperature steam flow from the steam slit exit; and the oil mist is further crushed, mixed and fully atomized through the swirler arranged on the end section of the gun core, thus achieving uniform oil amount distribution in each sprinkler and good burning effect. Two ends of the annular adjusting ring are respectively connected with a steam adjusting gasket and an oil adjusting gasket to achieve adjustable oil/steam ratio and wide application range.

Description

A kind of inner mixing type two-stage atomized oil gun

Affiliated technical field

The present invention relates to industrial burner steam atomization oil gun, relate in particular to the inner mixing type two-stage atomized oil gun that poor oil is compared, is suitable for using in a kind of high adjusting.

Background technology

Oil gun has been used comparatively extensive as the burner of coal-burning boiler starting drive and large-tonnage oil burning boiler at present.The heavy oil particularly economy of poor residuum obtains paying attention to obviously greater than light oil especially.Make fully trouble-free burning of such oil, prerequisite is that it can fully be atomized, and atomizing particle should be tiny as far as possible.The employed oil gun of industrial burner is divided into mechanical atomization and medium assisted atomization two big classes at present.When heavy oil combustion, how with medium (as air, steam etc.) assisted atomization.People use and improve fuel oil, steam discharge pressure or improve method such as oily temperature, and purpose all is to make liquid fuel to reduce viscosity, fully atomizing, and olesome is thin as far as possible, thus burning easily.But reality is, even oil pressure of having relatively high expectations and temperature, atomizing effect is still undesirable.Particularly high-power oil gun, it is excessive atomizing particle then to occur, the particle diameter inequality, elaioleucite skewness on the spray orifice cross section or the elaioleucite skewness between each spray orifice, phenomenons such as burning not to the utmost or burning is excessive, coking, not only waste the fuel oil energy, and brought inconvenience, even hidden danger is arranged to burner operation and operating personnel.

Summary of the invention

The objective of the invention is: provide a kind of oil/vapour high regulate than, each to even spraying, the inner mixing type two-stage atomized oil gun of the big poor oil of viscosity that can be used to burn.

For achieving the above object, the technical scheme that adopts is: a kind of inner mixing type two-stage atomized oil gun, comprise the shower nozzle that connects successively, oil vapour mixing chamber, the body of a gun and joint, it is characterized in that: described body of a gun cavity is built-in with ring-type adjusting ring and rifle core, described ring-type adjusting ring inboard is equipped with asphalt channel, be equipped with the vapour paths between the ring-type adjusting ring outside and the described body of a gun inner surface, described rifle core has the tapered centre guide protrusions, be equipped with the oil circuit slit between described ring-type adjusting ring end and the described rifle core periphery, be equipped with vapour road slit between the outside of described adjusting ring end and the described body of a gun medial surface, the two ends of described ring-type adjusting ring are regulated pad with the vapour road respectively and are connected with oil circuit adjusting pad, fixedly connected with swirler in described rifle core end.

Described vapour road slit and described oil circuit slit be venturi convergent tubulose in the form of a ring.

Described oil circuit slit both sides inner surface is equipped with asymmetric saw-tooth grooves, the more than circle of quantity.

The blade of described swirler is the streamline shape, and the blade inlet direction is parallel with the oil gun axis.

Good effect of the present invention is: liquid fuel, fuel oil in the oil circuit slit by speed-raising simultaneously, be placed in oil circuit slit two side the violent disturbance of asymmetric saw-tooth grooves, tear; Liquid fuel, fuel oil stand the fierce impact from the high-speed and high-temperature vapor stream in slit exit, vapour road in the exit of oil circuit slit, further with the broken atomizing of mist of oil; The heat of steam fully passes to mist of oil, through swirler the further fragmentation of mist of oil is mixed again, and fully atomizing helps reducing the viscosity and the surface tension of mist of oil; Each spray orifice oil mass distributed uniform, combustion efficiency is good.The two ends of described ring-type adjusting ring are regulated pad with the vapour road respectively and are connected with oil circuit adjusting pad, and oil/vapour ratio can be regulated, and is applied widely.

Description of drawings

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the spray nozzle structural representation;

Fig. 3 is the local structure for amplifying schematic diagram of A among Fig. 1;

Fig. 4 is the swirler structural representation.

Among the figure, 1. shower nozzle; 2. mixing chamber; 3. the body of a gun; 4. joint; 5. vapour paths; 6. asphalt channel; 7. pad is regulated on the vapour road; 8. ring-type adjusting ring; 9. oil circuit is regulated pad; 10. rifle core; 11. swirler; 12. fixture; 13. hole; 14. oil circuit slit; 15. vapour road slit; 16. saw-tooth grooves.

The specific embodiment

Fig. 1 is a structural representation of the present invention, as seen from the figure: a kind of inner mixing type two-stage atomized oil gun, comprise the shower nozzle 1 that connects successively, oil vapour mixing chamber 2, the body of a gun 3 and joint 4, it is characterized in that: the described body of a gun 3 cavitys are built-in with ring-type adjusting ring 8 and rifle core 10, described ring-type adjusting ring 8 inboard centers are equipped with asphalt channel 6, be equipped with vapour paths 5 between described ring-type adjusting ring 8 outsides and the described body of a gun 3 inner surfaces, described rifle core 10 has the tapered centre guide protrusions, be equipped with oil circuit slit 14 between described ring-type adjusting ring 8 ends and described rifle core 10 peripheries, being equipped with vapour road slit 15 between the outside of described adjusting ring 8 ends and the described body of a gun 3 inner surfaces, fixedlys connected by fixture 12 with swirler 11 in described rifle core 10 ends.

The two ends of described ring-type adjusting ring 8 are regulated pad 7 with the vapour road respectively and are connected with oil circuit adjusting pad 9, can adjust the width of vapour road slit 15 and oil circuit slit 14 by adjusting

pad

7 or 8, to adapt to different operating modes.Array one big two little spray orifice is arranged on the visible shower nozzle of Fig. 2.Fig. 3 is the local structure for amplifying schematic diagram of A among Fig. 1, illustrates visible described vapour road slit 15 and described oil circuit slit 14 venturi convergent tubulose in the form of a ring.Described oil circuit slit 14 both sides inner surfaces are equipped with asymmetric saw-tooth grooves 16, the more than circle of quantity.Fig. 4 is the swirler structural representation, and the blade of diagram swirler 11 is the streamline shape, and the Way in of blade is parallel with the oil gun axis direction.

As seen from the figure, steam enters oil gun from oil gun afterbody vapour paths 5, and vapour road slit 15 is venturi convergent tubulose in the form of a ring, and therefore, steam is raised speed in vapour road slit 15, forms the high-speed and high-temperature vapor stream; Liquid fuel, fuel oil enter from oil gun afterbody center oil paths 6, be reversed even shunting to rifle core 10 tapered centre guide protrusions, enter oil circuit slit 14 through via hole 13, in the described oil circuit slit 14 of venturi convergent tubulose in the form of a ring, raised speed, be placed in simultaneously oil circuit slit 14 both sides inner surfaces the 16 violent disturbances of asymmetric saw-tooth grooves, tear; Liquid fuel, fuel oil stand the fierce impact from the high-speed and high-temperature vapor stream in slit 15 exits, vapour road in the exit of oil circuit slit 14, further with the broken atomizing of mist of oil; Mist of oil and high-speed and high-temperature vapor stream enter before the mixing chamber earlier through swirler, make that mist of oil and vapor mixing are more even, axial velocity is more aligned.The heat of high-temperature steam fully passes to mist of oil, helps reducing mist of oil viscosity, thus the atomizing effect in each hole when further improving spray orifice and spraying to burner hearth, sufficient combustion.The efficiency of combustion height.

Claims

1. inner mixing type two-stage atomized oil gun, comprise the shower nozzle (1) that connects successively, oil vapour mixing chamber (2), the body of a gun (3) and joint (4), it is characterized in that: the described body of a gun (3) cavity is built-in with ring-type adjusting ring (8) and rifle core (10), the inboard center of described ring-type adjusting ring (8) is equipped with asphalt channel (6), be equipped with vapour paths (5) between described ring-type adjusting ring (8) outside and the described body of a gun (3) inner surface, described rifle core (10) has the tapered centre guide protrusions, be equipped with oil circuit slit (14) between described ring-type adjusting ring (8) end and described rifle core (10) periphery, be equipped with vapour road slit (15) between the outside of described ring-type adjusting ring (8) end and the described body of a gun (3) inner surface, the two ends of described ring-type adjusting ring (8) are regulated pad (7) with the vapour road respectively and are connected with oil circuit adjusting pad (9), fixedly connected by fixture (12) with swirler (11) in described rifle core (10) end.

2. according to the described a kind of inner mixing type two-stage atomized oil gun of claim 1, it is characterized in that: described vapour road slit (15) and described oil circuit slit (14) be venturi convergent tubulose in the form of a ring.

3. according to the described a kind of inner mixing type two-stage atomized oil gun of claim 1, it is characterized in that: described oil circuit slit (14) both sides inner surface is equipped with asymmetric saw-tooth grooves (16).

4. according to the described a kind of inner mixing type two-stage atomized oil gun of claim 3, it is characterized in that: the more than circle of described asymmetric saw-tooth grooves (16) quantity.

5. according to the described a kind of inner mixing type two-stage atomized oil gun of claim 1, it is characterized in that: the blade of described swirler is the streamline shape.

6. according to the described a kind of inner mixing type two-stage atomized oil gun of claim 5, it is characterized in that: the blade inlet direction of described swirler is parallel with the oil gun axis direction.