CN203842732U - Liquid atomizing nozzle - Google Patents

Abstract

The utility model discloses a liquid atomizing nozzle, which comprises: a liquid spray pipe for spraying liquid fuel, and an outer air pipe, the outer air pipe is covered outside the liquid spray pipe and there is a gap between the two pipe bodies; An inner air pipe, the inner air pipe is inserted inside the liquid nozzle with a gap between them; the axis lines of the outer air pipe, the liquid nozzle and the inner air pipe coincide. The design of the nozzle of the utility model realizes the design and manufacture of the coaxial casing below 2mm. Because the utility model adopts the structure of the three-layer casing to work at the same time, the liquid located in the middle is mixed and stirred under the action of two layers of air inside and outside, thereby achieving the purpose of liquid atomization.

Description

A liquid atomizing nozzle

technical field

The utility model relates to the field of burning appliances, in particular to a liquid atomizing nozzle.

Background technique

The flame propagation velocity refers to the propulsion speed of the flame front along its normal direction relative to the direction of the unburned material. The flame propagation velocity characterizes the moving speed of the flame front in the combustion process in space, and is one of the important data for studying flame stability. Methods for measuring flame propagation velocity include Bunsen burner method, cylindrical tube method, constant volume sphere method, soap bubble method, opposed flame method and plane flame burner method, etc. Among them, the Bunsen burner flame is the most common flame in the laboratory. The Bunsen burner has a simple structure and is easy to operate. It is an important basic experimental bench in thermal science experiments. Existing Bunsen burners are all gas Bunsen burners. The combustible gas is introduced from the bottom of the Bunsen burner, and the air is entrained into the combustible gas from the air hole. After being mixed to a certain extent through the lamp neck, it burns at the lamp cap. A method for calculating the flame propagation of a gas-fueled Bunsen burner.

However, the prior art does not disclose the method of using liquid as the fuel of the Bunsen burner, and the liquid needs to be atomized as the fuel of the Bunsen burner to make the final flame stable and easy to measure. The nozzles in the prior art are all gas nozzles, in which the nozzle is only used as a single nozzle for combustible gas, and the air enters from another independent inlet. The nozzles of this structure can only mix gases, but cannot mix liquids into combustion. The required atomization state, so this nozzle cannot meet the atomization requirements of liquid fuel.

Utility model content

The purpose of the utility model is to provide a nozzle capable of atomizing liquid fuel.

In particular, the utility model provides a liquid atomizing nozzle, comprising:

liquid nozzles, which are hollow pipes; and

The outer air pipe is sleeved outside the liquid nozzle and there is a gap between the pipe bodies of the two;

an inner air tube inserted inside the liquid nozzle with a gap therebetween;

The axes of the outer air pipe, the liquid nozzle and the inner air pipe are coincident.

Further, the outlet ends of the outer air pipe, the liquid nozzle and the inner air pipe are not located on the same plane, wherein the outlet end of the outer air pipe protrudes outside the outlet end of the liquid nozzle, and the inner air pipe the outlet end of the air tube retracts into the outlet end of the liquid nozzle, and

The ratio of the distance from the outlet end of the liquid nozzle to the outlet end of the outer air pipe to the distance from the outlet end of the liquid nozzle to the outlet end of the inner air pipe is 5:3.

Further, the ratio between the gap between the liquid nozzle and the outer air pipe, the gap between the liquid nozzle and the inner air pipe, and the inner diameter of the inner air pipe is 1: 3:5.

Further, the air inlet end of the outer air pipe is fixed on the outer surface of the liquid nozzle by silver welding, and the air inlet end and the liquid nozzle are sealed and welded;

The liquid inlet end of the liquid pipe is fixed on the outer surface of the inner air pipe by silver welding, and the liquid inlet end and the inner air pipe are sealed and welded;

An external air guide port is arranged on the side pipe body of the air inlet end of the external air pipe;

A liquid inlet is arranged on the side pipe body of the liquid inlet end of the liquid nozzle;

The air inlet end of the inner air pipe is provided with an inner air guide port, and the inner air guide port is perpendicular to the inner air pipe.

Further, the outer air guide port, the liquid inlet port and the inner air guide port are located on the same side and on the same wale parallel to the axis of the inner air tube.

Further, the distance from the axis of the outer air guide port to the axis of the liquid inlet is the same as the distance from the axis of the liquid inlet to the axis of the inner air guide.

Further, the distance from the outlet end of the outer air pipe to the axis of the outer air guide port is the same as the distance from the axis of the outer air guide port to the axis of the liquid inlet.

Because the utility model adopts the structure of the three-layer casing to work at the same time, the liquid located in the middle is mixed and stirred under the action of the inner and outer layers of air, thereby achieving the purpose of liquid atomization. The design of the nozzle of the utility model realizes the design and manufacture of the coaxial casing below 2mm.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic perspective view of a three-layer bushing installation structure according to an embodiment of the present invention.

Detailed ways

Fig. 1 is a schematic perspective view of a three-layer bushing installation structure according to an embodiment of the present invention. The liquid nozzle 102 is used as the injection pipe of the liquid fuel, and is located between the outer air pipe 101 and the inner air pipe 103. The three pipes can be separated from each other by a certain distance, and in order to ensure that the finally ejected gas and liquid are at the same position, the The axes of the outer air pipe 101, the liquid nozzle 102 and the inner air pipe 103 are coincident. In use, the outer air pipe 101 sprays air outward, the liquid nozzle 102 sprays liquid fuel outward, and the inner air pipe 103 also sprays air outward. The air in the inner and outer tubes after spraying sandwiches the liquid fuel, which can fully mix the air and liquid fuel during operation, so as to stir the liquid fuel into particles or small molecules to achieve the purpose of liquid atomization. In order to improve the combustion effect of liquid fuel, the air in the outer air pipe 101 and/or the inner air pipe 103 can be replaced with a corresponding combustion-supporting gas, such as oxygen.

In an embodiment of the present invention, the outlet ends of the outer air pipe 101 , the liquid nozzle 102 and the inner air pipe 103 may not be located on the same plane. Such as making the outlet end of the outer air pipe 101 stretch out of the outlet end of the liquid nozzle 102 . And the outlet end of the inner air tube 103 can be retracted into the outlet end of the liquid nozzle 102 . If the plane where the outlet end of the outer air pipe 101 is located is the standard, then the planes where the outlet ends of the three pipes are located are in a sequentially retracted structure. Such a structure can make the air in the outer air pipe 101 spray out first, and then the liquid nozzle 102 sprays out the liquid again. This can prevent the liquid fuel sprayed out earlier from being mixed and stirred by the air in time. And the air in the inner air pipe 103 can carry out agitation mixing again to the gas-liquid mixture after the mixing of the former two, and strengthen the atomization effect on the liquid fuel. In order to make the atomization reach the best effect, the distance between the outlet end of the liquid nozzle 102 of the present utility model and the outlet end of the outer air pipe 102, and the ratio of the distance between the outlet end of the liquid nozzle 102 and the outlet end of the inner air pipe 103 It is 5:3.

In one embodiment of the present utility model, the gap between the liquid nozzle 102 and the outer air pipe 101, the gap between the liquid nozzle 102 and the inner air pipe 103 and the inner diameter of the inner air pipe 103 The ratio is set to 1:3:5. By setting corresponding gaps, it is ensured that the atomization of air and liquid fuel is more sufficient.

In one embodiment of the present invention, the outer air pipe 101 is fixed on the outer surface of the liquid nozzle 102 by silver welding through the air inlet end, and the air inlet end and the liquid nozzle 102 are sealed and welded. Similarly, the liquid inlet end of the liquid nozzle 102 is fixed on the outer surface of the inner air pipe 103 by silver welding, and the liquid inlet end and the inner air pipe 103 are sealed and welded at the same time. The outer air pipe 101 and the liquid spray pipe 102 are respectively fixed with the pipes inside the air inlet end and the liquid inlet end opposite to the outlet end. The outer air pipe 101 can be provided with an outer air guide port 104 communicating with the inside of the outer air pipe 101 on the side pipe body of the air intake end. The liquid nozzle 102 may be provided with a liquid inlet 105 communicated with the inside of the liquid inlet 102 on the side body of the liquid inlet. Therefore, by sealing at the fixed point, the corresponding gas and liquid can only be discharged from their respective outlet ports, avoiding mutual influence. Equally in order to make the nozzle uniform in structure on the whole, it is convenient to control, the utility model also arranges the inner air guide port 106 of the inner air pipe 103 on the side of its tube body. The inner air guide port 106 can be vertically arranged on the pipe body of the inner air pipe 103 . The inner air guide port 106 is directly connected to the inlet end of the inner air pipe 103 , reducing the steps of sealing the inlet end of the inner air pipe 103 . The outer air guide port 104, the liquid inlet port 105 and the inner air guide port 106 can be respectively fixed to the respective pipe bodies in a vertical manner. Such a structure can make the gas and liquid generate whirling power when they enter the respective pipes, which can further strengthen the injection pressure. The mixing effect of gas and liquid after exiting.

In one embodiment of the present utility model, the outer air guide port 104, the liquid inlet port 105 and the inner air guide port 106 are located on the same side and may be located on the same wale parallel to the axis of the inner air pipe. The three are located in a row for easy operation and control without affecting the external operation of the entire nozzle.

In one embodiment of the present utility model, the distance from the axis line of the outer air guide port 104 to the axis line of the liquid inlet 105 is the distance from the axis line of the liquid inlet port 105 to the axis line of the inner air guide port 106 same interval.

In one embodiment of the present utility model, the distance from the axis line from the outlet end of the outer air pipe 101 to the outer air guide port 104 is the same as the distance from the axis line from the outer air guide port 104 to the liquid inlet port 105 . Through the above settings, the air and liquid can obtain a certain speed in the tube, which provides better conditions for the mixing and atomization after spraying out of the nozzle.

The above descriptions are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Without departing from the scope of the technical solution of the utility model, the technicians of this patent may use the technical content of the above prompts to make some changes or modify them into equivalent embodiments with equivalent changes, but all do not depart from the content of the technical solution of the utility model Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the solution of the utility model.

Claims (6)

1. a liquid atomizing nozzle, comprising:

Liquid jet is hollow pipeline; And

Outer space tracheae, is enclosed within outside described liquid jet and between both pipe shafts and has gap;

Interior air hose, is inserted in the inside of described liquid jet and has gap between the two;

The axial line of described outer space tracheae, described liquid jet and described interior air hose overlaps;

The port of export of described outer space tracheae, liquid jet and interior air hose is not positioned at same plane, the port of export of wherein said outer space tracheae stretches out outside the port of export of described liquid jet, and the port of export of described interior air hose is retracted in the port of export of described liquid jet, and

The port of export of described liquid jet is to the port of export distance of described outer space tracheae, with the port of export to the ratio of the port of export distance of described interior air hose of described liquid jet be 5: 3.

2. liquid atomizing nozzle as claimed in claim 1, is characterized in that,

Gap between described liquid jet and described outer space tracheae, and gap between described liquid jet and described interior air hose, and the internal diameter three ratio of described interior air hose is 1: 3: 5.

3. liquid atomizing nozzle as claimed in claim 2, is characterized in that,

The inlet end of described outer space tracheae utilizes silver soldering to be fixed on the outer surface of described liquid jet, and is seal welding between inlet end and described liquid jet;

The liquid feeding end of described liquid line utilizes silver soldering to be fixed on the outer surface of described interior air hose, and is seal welding between liquid feeding end and described interior air hose;

On the side pipe shaft of the inlet end of described outer space tracheae, outer air guide port is set;

On the side pipe shaft of the liquid feeding end of described liquid jet, inlet is set;

The inlet end of described interior air hose is provided with interior air guide port, and described interior air guide port is perpendicular to interior air hose.

4. liquid atomizing nozzle as claimed in claim 3, is characterized in that,

Described outer air guide port, described inlet and described interior air guide port be positioned at the same side and in the same stringer of the axis parallel of described air hose on.

5. liquid atomizing nozzle as claimed in claim 4, is characterized in that,

The axial line of described outer air guide port is to the axial line distance of inlet, identical to the spacing distance of the axial line of described interior air guide port with the axial line of described inlet.

6. liquid atomizing nozzle as claimed in claim 5, is characterized in that,

The port of export of described outer space tracheae is to the axial line distance of described outer air guide port, identical apart from interval to the axial line of described inlet with the axial line of described outer air guide port.