CN2306400Y - Anti-coking energy-saving oil burner jet nozzle - Google Patents

Abstract

The utility model discloses a coking proof energy saving oil burner spray head which combusts liquid fuels and is characterized in that inner cavities of an oil spray head (2) are a horn-shaped expansion hole (3) and a contraction hole (5) whose contraction angle is 30DEG, and the expansion hole (3) is opposite and is communicated with the contraction hole (5); the communication position of the expansion hole and the contraction hole is provided with a throat mouth (11) whose section diameter is between 2.5 mm and 3 mm, and a convex body on the inner wall of the oil vapor spray head is provided with a plurality of steam holes (1) which are distributed evenly and are parallel to the centerline of the spray head; the utility model can atomize the fuels by three times, the atomized fuels are fully mixed with steam to achieve complete combustion, and the steam sprayed from the inner cavity of the oil vapor spray head can effectively blow off oil drops at the spray mouth and cool the spray mouth to prevent the spray head from coking.

Description

The energy-conservation oil burner shower nozzle of anti-coking

The utility model relates to a kind of combustion apparatus of Industrial Stoves, particularly the burner shower nozzle of combustion of liquid fuel oil.

Existing JB series low pressure ratio is regulated oil burner because of its flameholding, and adjustable range is big, and is simple in structure, and the height wind-warm syndrome advantage such as all can be used and be used widely.But the disadvantage of this burner is: burner " black line is obvious " at first, and the length of flame and to spray kinetic energy big, atomizing effect is general; Secondly oil nozzle easily coking under the hyperthermia radiation effect, unfavorable to operating and regulating.

The purpose of this utility model is to provide a kind of high temperature air, low-pressure steam of can making fully to mix with fuel oil, the steam atomization agent is directly mixed with fuel oil dispel the oil burner shower nozzle that remains in shower nozzle spout place oil droplet.

The purpose of this utility model is achieved in that this shower nozzle mainly is made up of the oil nozzle in oily vapour shower nozzle, the oily vapour shower nozzle chamber, oily vapour shower nozzle air outside shower nozzle and wind cover, be characterized in: the inner chamber of oil nozzle be two directions opposite and be interconnected be trumpet-shaped expanded bore and shrinkage hole, the angle of throat of shrinkage hole adopts 30 °; Connection place at expanded bore and shrinkage hole forms the aditus laryngis that cross section diameter is 2.5-3mm; On the inwall convex body of oily vapour shower nozzle, offer several uniform and parallel with shower nozzle center line steam holes.

This sprinkler design is reasonable, and atomizing effect is good, is difficult for coking, and the Industrial Stoves that can adapt to the different liquids fuel oil use

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is a cross-sectional schematic of the present utility model.

Wherein: 1 is steam hole, and 2 is oily vapour shower nozzle, and 3 is expanded bore, and 4 is oil nozzle, and 5 is shrinkage hole, and 6 for wind hangs down, and 7 is air nozzle, and 8 is steam pipe, and 9 is oil pipe, and 10 is needle, and 11 is aditus laryngis, and 12 is whirl hole, and 13 is the tangent line hole.

During work, the flow through whirl hole (12) of air nozzle (7) of combustion air in the wind cover (6) enters the tangent line hole (13) of oily vapour shower nozzle (2), make air produce eddy flow and meet and form the one-level atomizing with the fuel oil of expanded bore (3) ejection, when the mixed airflow that the one-level atomizing forms is gone out oily vapour shower nozzle (2), again with air nozzle (7) in rotational flow air meet and form the secondary atomizing, the mixed airflow that secondary atomizing produces again with wind cover (6) in rotational flow air meet at the spout place of air nozzle (7) and form three grades of atomizings, fuel oil through three atomizings is split into mist of oil like this, fully mix again with through the vaporific steam of ring that is of oily vapour shower nozzle (2) inner chamber, can be issued to completing combustion at lower air coefficient from steam hole (1) ejection.The vaporific steam of ring from steam hole ejection dispels oil droplet and the cooled nozzle that remains in oily vapour shower nozzle spout at any time simultaneously, avoids fuel oil to analyse carbon and stops up the situation of oil nozzle.

This shower nozzle uses on the heating furnace of shaped steel subsidiary factory of Pudong Iron ﹠ Steel (Group) Co Ltd..When heavy oil oil temperature be 115-120 ℃, operating oil pressure is 0.3-0.5MPa; Steam pressure is 0.05-0.1MPa; Wind-warm syndrome is 350-400 ℃, and when blast was 2-6KPa, visible flame length can be controlled at about 1.5m, and the fuel-economizing of ton steel reaches 0.5-1kg/T, and be 1 year service life.

Claims (1)

1, the energy-conservation oil burner shower nozzle of a kind of anti-coking, it comprises by oily vapour shower nozzle (2), places oil nozzle (4) in the oily vapour shower nozzle chamber and oily vapour shower nozzle air outside shower nozzle (7) and wind cover (6) to form, it is characterized in that: the inner chamber of oil nozzle (4) be two directions opposite and be interconnected be trumpet-shaped expanded bore (3) and shrinkage hole (5), 30 ° of the angle of throat employings of shrinkage hole (5); Connection place at expanded bore (3) and shrinkage hole (5) forms the aditus laryngis (11) that cross section diameter is 2.5-3mm; Several uniform and parallel with shower nozzle center line steam holes (1) are arranged on the inwall convex body of oily vapour shower nozzle (2).