Improved atomizing and evaporating device for evaporating pipe

Abstract

The utility model discloses an evaporation pipe atomization evaporation improvement device which comprises a columnar base body, the two ends of the columnar base body are open, a spiral spoiler is arranged in the columnar base body in the extending direction, and the spiral spoiler, the columnar base body and an evaporation pipe jointly form a spiral spoiler channel. The columnar base body comprises an inlet ring and an outlet ring which are nested on the inner wall of the evaporation pipe, and a plurality of rib plates are arranged between the inlet ring and the outlet ring; a conical fuel oil baffle is arranged in the columnar base body. According to the scheme, the fuel oil baffle can enable fuel oil sprayed out of the oil supply pipe to diffuse all around, so that the mixing area of the fuel oil and air is increased, and the fuel oil can be broken into fuel oil liquid drops; high-speed air and fuel oil liquid drops can be further mixed through the spiral turbulent flow channel, meanwhile, heat exchange between air and fuel oil in the evaporation pipe and the pipe wall can be enhanced through the multiple rib plates, and therefore the fuel oil atomization and evaporation effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel atomization evaporation, in particular to an improved device for atomization evaporation of an evaporation tube. Background Art

[0002] In the micro turbojet combustion chamber, the fuel is sprayed into the evaporator tube by a direct nozzle, and is atomized and mixed with the high-speed air entering the evaporator tube. At the same time, the entire evaporator tube is surrounded by a high-temperature hot flame, and the air and fuel in the tube are heated, causing the fuel droplets to evaporate into gas, and then the mixed gas of fuel vapor and air is ejected from the evaporator tube and participates in combustion.

[0003] However, since the air flows smoothly in the straight tube evaporator, there is no large-scale vortex, which makes the atomization effect unsatisfactory; in addition, the heat exchange between the air in the evaporator and the tube wall is limited, resulting in unsatisfactory evaporation effect; thus, it is difficult to start the combustion chamber and the combustion efficiency is low. Therefore, it is necessary to increase the intensity of the large-scale vortex in the tube and the heat exchange between the gas in the tube and the tube wall by adding a spoiler structure and heat exchange fins. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides an improved device for atomizing and evaporating an evaporator tube, which solves the problem that the atomizing and evaporating effect of the fuel in a straight tube evaporator tube is not ideal.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] Provided is an improved device for atomizing evaporation of an evaporator tube, comprising a columnar base body whose radial dimensions match the inner wall of the evaporator tube, the columnar base body being open at both ends, a spiral spoiler plate being arranged in the extending direction of the inner part of the columnar base body, the spiral spoiler plate, the columnar base body and the evaporator tube together forming a spiral spoiler channel.

[0007] Furthermore, the columnar base includes an inlet ring and an outlet ring which are nested on the inner wall of the evaporator tube, and a plurality of ribs are arranged between the inlet ring and the outlet ring.

[0008] Furthermore, the extension direction of the plurality of ribs is parallel to the extension direction of the evaporation tube, and the two ends of the plurality of ribs are evenly spaced and arranged in the circumferential direction of the inlet ring and the outlet ring.

[0009] Furthermore, a conical fuel baffle is provided in the columnar base, and the fuel baffle is located between the spiral spoiler and the fuel supply pipe in the evaporator tube, the fuel baffle is close to the fuel supply pipe outlet, and the cone tip of the fuel baffle is arranged opposite to the fuel supply pipe outlet.

[0010] Furthermore, the fuel baffle is fixedly connected to the plurality of rib plates via a plurality of ribs.

[0011] Furthermore, a plurality of avoidance grooves engaged with the ribs are provided on the circumference of the outer edge of the spiral spoiler, and the outer edge of the spiral spoiler is in contact with the inner wall of the evaporator tube.

[0012] Furthermore, a certain distance is maintained between the outlet ring and the outlet of the evaporation tube.

[0013] The beneficial effects of the utility model are:

[0014] This solution enhances the effect of fuel atomization and evaporation. When in use, this solution can be directly nested and installed in the evaporation tube of the existing combustion chamber to avoid reprocessing of the combustion chamber and the evaporation tube; the fuel baffle can make the fuel sprayed from the fuel supply pipe diffuse to the surroundings, thereby increasing the mixing area of ​​the fuel and the air, which is conducive to the fuel being broken into fuel droplets; then the fuel droplets and the air enter the spiral spoiler channel, and under the action of the large-scale vortex formed by the spiral spoiler, the high-speed air and the fuel droplets are further mixed, so that the fuel droplets are further broken into mist droplets; at the same time, a number of ribs arranged in the circumferential direction can enhance the heat exchange between the air, fuel and the tube wall in the evaporation tube, promote the evaporation of the fuel during the mixing process, and mix it with the air; finally, it flows out from the outlet ring, passes through a section of the evaporation tube, and is discharged from the outlet of the evaporation tube in the form of a stable gas-phase fuel-air mixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the improved device for atomizing evaporation in an evaporation tube.

[0016] Figure 2 The cross-sectional view shows the cooperation between the evaporation tube atomization evaporation improvement device and the evaporation tube.

[0017] Among them, 1. evaporator tube, 2. spiral spoiler, 3. inlet ring, 4. outlet ring, 5. rib plate, 6. fuel baffle, 7. fuel supply pipe, 8. fuel supply pipe outlet, 9. rib, 10. avoidance groove, 11. evaporator tube inlet, 12. evaporator tube outlet, 13. connecting plate. DETAILED DESCRIPTION

[0018] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0019] like Figure 1 and Figure 2As shown, the evaporator tube atomization evaporation improvement device of the present scheme includes a columnar base, which includes an inlet ring 3 and an outlet ring 4 nested on the inner wall of the evaporator tube 1, and the inlet ring 3 and the outlet ring 4 are connected by a plurality of connecting plates 13, and a plurality of ribs 5 are also arranged between the inlet ring 3 and the outlet ring 4, and the extension direction of the plurality of connecting plates 13 and the plurality of ribs 5 is parallel to the extension direction of the evaporator tube 1, and the two ends of the plurality of ribs 5 are evenly spaced and arranged in the circumferential direction of the inlet ring 3 and the outlet ring 4.

[0020] A spiral spoiler 2 is provided in the extension direction of the inner part of the columnar base, and a plurality of avoidance grooves 10 engaged with the ribs 5 are provided in the circumferential direction of the outer edge of the spiral spoiler 2. The outer edge of the spiral spoiler 2 fits with the inner wall of the evaporator tube 1, so that the spiral spoiler 2, the ribs 5 and the evaporator tube 1 can together form a spiral spoiler channel.

[0021] A conical fuel baffle 6 is also provided in the columnar base, and the fuel baffle 6 is fixedly connected to the four ribs 5 through four ribs 9 respectively; when the present scheme is implemented, the inlet ring 3 and the inner wall of the evaporator tube 1 can be spot-welded to fix the whole device, and the inlet ring 3 is close to the evaporator tube inlet 11, and a certain distance is maintained between the outlet ring 4 and the evaporator tube outlet 12, the spiral spoiler 2 is close to the end of the outlet ring 4, and the fuel baffle 6 is located between the spiral spoiler 2 and the fuel supply pipe 7 in the evaporator tube 1, the fuel baffle 6 is close to the fuel supply pipe outlet 8, and the cone tip of the fuel baffle 6 is arranged to face the fuel supply pipe outlet 8.

[0022] The following is a detailed description of the working principle of this solution:

[0023] In this scheme, the high-speed air in the evaporator tube 1 can be introduced from the evaporator tube inlet 11, and the fuel can be sprayed out from the fuel supply pipe outlet 8, wherein the fuel baffle 6 can make the fuel sprayed from the fuel supply pipe 7 diffuse to the surroundings, thereby increasing the mixing area of ​​the fuel and the air, which is conducive to the fuel being broken into fuel droplets; then the fuel droplets and the air enter the spiral spoiler channel, and under the action of the large-scale vortex formed by the spiral spoiler 2, the high-speed air and the fuel droplets are further mixed, so that the fuel droplets are further broken into mist droplets; at the same time, a number of ribs 5 arranged in the circumferential direction can enhance the heat exchange between the air, fuel and the tube wall in the evaporator tube 1, promote the evaporation of the fuel during the mixing process, and mix it with the air; finally, it flows out from the outlet ring 4, passes through a section of the evaporator tube 1, and is discharged from the outlet of the evaporator tube 1 in the form of a stable gas-phase fuel-air mixture.

Claims

1. An improved device for atomizing evaporation of an evaporation tube, characterized in that: It comprises a columnar base body with radial dimensions matching the inner wall of the evaporation tube, the two ends of the columnar base body are open, a spiral spoiler is arranged in the extending direction of the inner part of the columnar base body, and the spiral spoiler, the columnar base body and the evaporation tube together form a spiral spoiler channel.

2. The evaporation tube atomization evaporation improvement device according to claim 1, characterized in that: The columnar base comprises an inlet ring and an outlet ring which are nested on the inner wall of the evaporation tube, and a plurality of ribs are arranged between the inlet ring and the outlet ring.

3. The evaporation tube atomization evaporation improvement device according to claim 2, characterized in that: The extension direction of the plurality of ribs is parallel to the extension direction of the evaporation tube, and the two ends of the plurality of ribs are evenly spaced and arranged in the circumferential direction of the inlet ring and the outlet ring.

4. The evaporation tube atomization evaporation improvement device according to claim 2, characterized in that: A conical fuel baffle is arranged in the columnar base, and the fuel baffle is located between the spiral spoiler and the fuel supply pipe in the evaporator tube. The fuel baffle is close to the outlet of the fuel supply pipe, and the cone tip of the fuel baffle is arranged to face the outlet of the fuel supply pipe.

5. The evaporation tube atomization evaporation improvement device according to claim 4, characterized in that: The fuel baffle is fixedly connected to a plurality of rib plates through a plurality of ribs.

6. The evaporation tube atomization evaporation improvement device according to claim 2, characterized in that: A plurality of avoidance grooves engaged with the ribs are provided on the circumference of the outer edge of the spiral spoiler, and the outer edge of the spiral spoiler is in contact with the inner wall of the evaporator tube.

7. The evaporation tube atomization evaporation improvement device according to claim 2, characterized in that: A certain distance is maintained between the outlet ring and the outlet of the evaporation tube.

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