CN2122313U

CN2122313U - High efficiency and energy-saving jet having spiral flow

Info

Publication number: CN2122313U
Application number: CN 91221155
Authority: CN
Inventors: 汪育明; 张启林
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-11-16
Filing date: 1991-11-16
Publication date: 1992-11-18

Abstract

The utility model relates to a high efficiency and energy-saving jet having spiral flow. The existing multistage mixing atomizer comprises a mechanical atomizing device, an inner jet hole of propellant and an external mixing path of propellant. Because axial velocity of mixed flow generated by the atomizer is over high, the effects in aspects of flame stability in low load operating condition, cold starting performance, regulating ratio, etc. are poor. A swirl plate (or a slot) is additionally arranged in the external mixing path of the utility model, a diffusion-shaped dome is additionally arranged on an outlet end of oil gas so that problems of the prior art are overcome. If a plurality of stages of low-pressure wind external mixing path with swirl plates (or slots) are additionally arranged on the basis, the effects can be better.

Description

High efficiency and energy-saving jet having spiral flow

The utility model relates to the energy-efficient burner in the rotary flow field of a kind of stack, and it belongs to the burner nozzle class of fluid drips or the direct spirt of evaporating liquid combustion zone.

CN90211365.8 discloses a kind of multi-stage hybrid atomizer, accompanying drawing 1 is its structural representation, it contains the mechanical type atomising device that spin chamber 1 and atomizing piece 2 are constituted, be provided with spinning disk (or groove) 6 in the wherein said spin chamber 1, have nozzle opening 3 on the described atomizing piece 2, simultaneously be provided with mixed spray orifice 4 in the Alevaire with the coaxial position of nozzle opening 3 in the spin chamber 1, and the ejiction opening of interior mixed spray orifice 4 is positioned at nozzle opening 3, and nozzle opening 3, the ratio that mixes spray orifice 4 aisle spares in the Alevaire is 1:(0.01～0.5), in addition, also be provided with an Alevaire external mixing channel 7, nozzle opening 3 is 1:(0.5～2 with the area ratio of external mixing channel ejiction opening 11).This atomizer, adopt multistage atomizing, oil pressure, oil temperature, Alevaire conveying specific pressure step-down and the higher negativity effect of bringing of fuel-viscosity variation have been solved preferably, atomizing effect to atomizer under the situation that is stabilized in above parameter variation has good effect, but there is following problem, the one, flame holding is relatively poor under the low operating mode load condition, general cold start difficulty, the time of smoldering is long, contaminated environment; The 2nd, the operating mode Load Regulation is smaller, and the main cause that produces these problems is that the axial flow velocity of mixed flow is excessive, so further improved necessity is arranged.

The purpose of this utility model is to overcome the deficiencies in the prior art, provides the rotary flow field of a kind of novel stack energy-efficient burner.

The purpose of this utility model realizes that by strengthening the external mixing channel rotational flow field specific practice is to set up spinning disk (or groove) 8 in external mixing channel 7, and simultaneously, oil gas ejection end has been set up one and has been the kuppe 9 of drawing together the shape that looses.Such burner is regulated than reaching 1:10, regulate ratio if further enlarge, can also set up the low-pressure air external mixing channel that is provided with spinning disk (or groove) in some levels on this basis, above measure, strengthened the external mixing channel rotational flow field, and the result who is strengthened in the external mixing channel flow field makes mist of oil stream in kuppe 9, further strengthened atomizing, simultaneously, the result of inside and outside rotary flow field stack forms the helical eddy flow of band low pressure center of vorticity, and this eddy flow, all smooth combustion preferably under various operating modes, and cold start is good, has so just overcome the problem that prior art exists effectively.

Accompanying drawing 1 is existing multistage mixed aerosol device structural representation; Accompanying drawing 2 is the utility model embodiment 1 structure charts; Accompanying drawing 3 is the utility model embodiment 2 structure charts.

The utility model is described in further detail below with reference to embodiment and accompanying drawing.

Embodiment 1

As shown in Figure 2, the energy-efficient burner in the rotary flow field of the stack of present embodiment, contain an atomizing piece 2, the mechanical type atomising device that spin chamber 1 and spinning disk (or groove) 6 constitutes, wherein, mixing spray orifice 4 in the Alevaire is arranged in the spin chamber 1, and it is coaxial with the nozzle opening 3 on the atomizing piece 2, simultaneously, the outlet of interior mixed spray orifice 4 is positioned at nozzle opening 3, in the present embodiment, nozzle opening 3, mixing spray orifice 4 area ratio of combustion chamber passage in the Alevaire is 1:0.4, and the burner of present embodiment also comprises an external mixing channel 7, and is provided with in the external mixing channel 7 to strengthen the spinning disk (or groove) 8 of outer DL turn of tidal stream field, outlet 11 places at external mixing channel 7, be provided with a kuppe 9 that is diffusion type, present embodiment external mixing channel 7 ejiction openings 11 aisle spares and nozzle opening 3 areas are than being 1.2:1, in addition, 5 is burner cap body among the figure, 12 is burner body, and 13 on it is the fuel oil interface, and 14 is the Alevaire interface.The energy-efficient burner in the rotary flow field of the stack of present embodiment can adopt steam or compressed air as Alevaire, if adopt compressed air to make Alevaire, uses 100 ^#Heavy oil, more than 80 ℃, more than the oil pressure 0.1Mpa, under the service condition more than the Alevaire pressure 0.1Mpa, cold start does not have black smoke in the oil temperature, and flame is all stable under the high and low load condition, regulates than reaching 1:10.

Embodiment 2

As shown in Figure 3, the difference of the burner of present embodiment and embodiment 1 is to have increased two-stage low-pressure air external mixing channel 15 and 16, be respectively equipped with spinning disk (or groove) 17 and 18 in the low-pressure air external mixing channel 15 and 16, in addition, can also on the divergent contour kuppe 9 of the ejection end correspondence of first order low-pressure air external mixing channel 15, open some tangential gas ports 19.The energy-efficient burner in the rotary flow field of the stack of present embodiment, can adopt steam or compressed air to make Alevaire, if adopt steam to make Alevaire, use 200# heavy oil, the oil temperature is more than 80 ℃, more than the oil pressure 0.1MPa, steam pressure is more than 0.1MPa, and low-pressure air pressure is under the service condition more than the 0.04MPa, and cold start does not have black smoke, high and low load flame is all stable, regulates than reaching 1:15.In addition, 20 be the low-pressure air interface among the figure.

Claims

1, the energy-efficient burner in the rotary flow field of a kind of stack, contain the mechanical type atomising device that constitutes by spin chamber 1 and atomizing piece 2, wherein, be provided with spinning disk (or groove) 6 in the described spin chamber 1, have nozzle opening 3 on the described atomizing piece 2, simultaneously be provided with mixed spray orifice 4 in the Alevaire with the coaxial position of nozzle opening 3 in the spin chamber 1, and the ejiction opening of interior mixed spray orifice 4 is positioned at nozzle opening 3, nozzle opening 3, mixing spray orifice 4 area ratio of combustion chamber passage in the Alevaire is 1: (0.01～0.5), also has an Alevaire external mixing channel 7, nozzle opening 3 is 1 with the area ratio of external mixing channel 7 ejiction openings 11: (0.5～2), it is characterized in that having set up spinning disk (or groove) 8 in the external mixing channel 7, and oil gas ejection end has been set up a kuppe 9 that is diffusion type.

2, the energy-efficient burner in the rotary flow field of a kind of stack according to claim 1 is characterized in that being provided with the some grades of low-pressure air external mixing channels of being with spinning disks (or groove).

3, the energy-efficient burner in the rotary flow field of a kind of stack according to claim 2 is characterized in that having some tangential gas ports 19 on the corresponding divergent contour kuppe 9 of the 1st grade of low-pressure air external mixing channel 15 ejection ends.