KR101674311B1 - High velocity jet gas burner with fuel-oxidant mixing and combustion control - Google Patents

High velocity jet gas burner with fuel-oxidant mixing and combustion control Download PDF

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Publication number
KR101674311B1
KR101674311B1 KR1020150111102A KR20150111102A KR101674311B1 KR 101674311 B1 KR101674311 B1 KR 101674311B1 KR 1020150111102 A KR1020150111102 A KR 1020150111102A KR 20150111102 A KR20150111102 A KR 20150111102A KR 101674311 B1 KR101674311 B1 KR 101674311B1
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KR
South Korea
Prior art keywords
fuel
oxidant
combustion
moving
injected
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KR1020150111102A
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Korean (ko)
Inventor
노동순
이은경
오정석
김승곤
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한국에너지기술연구원
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/36—Supply of different fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/35—Combustors or associated equipment

Abstract

The present invention relates to a super-high-speed combustion accelerator having a fuel-oxidant mixing function and a combustion control function, and a combustion system and a combustion method using the combustion accelerator. 1. A combustion accelerator comprising: a fuel supply pipe having a plurality of fuel injection holes on an outer surface thereof, through which fuel flows into the fuel injection portion; An inner pipe having a plurality of oxidant spray holes arranged at a specific distance from the outer surface of the fuel supply pipe and an outer pipe having an oxidant supply portion, the oxidant being introduced into the space between the inner pipe and the outer pipe through the oxidant supply portion, Supply pipe; And a combustion space provided in the space between the outer surface of the fuel supply pipe and the inner pipe of the oxidant supply pipe and through which the fuel is injected through the fuel injection hole and the oxidant is injected through the oxidant injection hole to be mixed and burned The present invention relates to a high-speed combustion accelerator having a fuel-oxidizer mixing function and a combustion control function.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a high-speed combustion accelerator having a fuel oxidizer mixing function and a combustion control function, and a combustion system and a combustion method using the combustion accelerator,

The present invention relates to a super-high-speed combustion accelerator having a fuel-oxidant mixing function and a combustion control function, and a combustion system and a combustion method using the combustion accelerator.

Conventionally, most industrial heating uses a method in which a fuel and an oxidizer are injected and mixed at an outlet end of a combustor to form a combustion flame, heating the heated space to a high temperature, and heating the object through radiating or convection heat.

An industrial thermal facility using this method has a problem that energy loss (loss of exhaust gas, loss of heat dissipation of the furnace, etc.) in accordance with the temperature and heating time of the heating chamber, temperature unevenness of the furnace depending on the shape and position of the furnace, There is a limitation in improvement of efficiency such as energy saving, rapid uniform heating, quality and productivity due to an increase in heat resistance due to generation of a high temperature oxidation film of the pyrotechnic material due to the supply and a loss of the base material.

Conventional high-speed gas burners are structurally incapable of adiabatic combustion and rapid uniform mixing, and the residence time of the mixer for complete combustion is insufficient, so that the combustion flame is formed outside the combustor. Thus, the limitation on the super- .

Korean Patent Publication No. 10-2015-0023885 Korean Patent No. 1470774 Korean Patent No. 1422987 Korea Patent No. 716889 Korea Patent No. 0872841

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a radiant heating method using a combustion flame of a conventional industrial combustor, Speed combustion mode in which the effect of convective heat transfer by the fuel-oxidant mixture is increased, thereby providing a fuel-oxidant mixture control function for the purpose of rapid uniform heating and energy saving.

Further, according to one embodiment of the present invention, it is possible to improve rapid uniform heating, reduce energy consumption, and reduce scale of an object to be heated.

According to an embodiment of the present invention, in order to maximize the heat transfer to the object to be heated irrespective of the shape and the loading state of the object to be heated, the surface of the object is heated at a high temperature, The combustion accelerator concept is introduced as an apparatus for injecting high-temperature combustion gas at high speed so as to be able to make contact with high-temperature combustion gas, so as to prevent the high-temperature preheating and rapid uniform mixing of fuel / oxidizer for combustion safety / stability, miniaturization, The purpose of this study is to derive a structural shape that can integrate the super low air burning combustion function for high load adiabatic combustion and suppress the oxidizing atmosphere and enable stable operation and control of the combustion accelerator.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It can be understood.

SUMMARY OF THE INVENTION A first object of the present invention is to provide a combustion accelerator comprising: a fuel supply pipe having a plurality of fuel injection holes on an outer surface thereof; An inner pipe having a plurality of oxidant spray holes arranged at a specific distance from the outer surface of the fuel supply pipe and an outer pipe having an oxidant supply portion, the oxidant being introduced into the space between the inner pipe and the outer pipe through the oxidant supply portion, Supply pipe; And a combustion space provided in the space between the outer surface of the fuel supply pipe and the inner pipe of the oxidant supply pipe and through which the fuel is injected through the fuel injection hole and the oxidant is injected through the oxidant injection hole to be mixed and burned Can be achieved as an ultra-high-speed combustion accelerator having fuel and oxidizer mixing and combustion control characteristics.

Further, the fuel and the oxidant may be injected into the combustion space symmetrically opposite to each other through the fuel injection hole and the oxidant injection hole.

The combustion gas injection nozzle may further include a combustion gas injection nozzle provided at a rear end of the combustion space and injecting mixed combustion gas in the combustion space.

The apparatus may further include a moving fuel nozzle tube spaced apart from the outer surface of the fuel supply pipe by a predetermined distance and formed with a plurality of fuel injection control holes.

The apparatus may further include a moving oxidant nozzle tube spaced apart from the inner or outer side of the oxidant pipe inner tube by a predetermined distance and formed with a plurality of oxidant injection control holes.

The apparatus may further include driving means for moving the moving fuel nozzle tube with respect to the longitudinal center axis of the fuel supplying tube and moving the moving oxidizing nozzle tube with respect to the longitudinal center axis of the oxidizing agent supplying tube have.

Further, the driving means may move the moving-fuel nozzle tube and the oxidant-supplying pipe integrally.

The amount of fuel injected into the combustion space may be controlled by the degree of overlap between the fuel injection control hole and the fuel injection hole in accordance with the movement of the moving fuel nozzle tube.

The amount of fuel injected into the combustion space may be adjusted by the degree of overlap between the oxidant injection hole and the oxidant injection hole as the moving oxidant nozzle tube moves.

The fuel injection holes may have different diameters along the circumferential direction of the fuel supply pipe.

In addition, the oxidant spray holes may have different diameters along the circumferential direction of the oxidant supply pipe.

Further, the fuel injection hole may be characterized in that an inclination angle is formed so that the fuel is injected into the combustion space at a specific angle.

The oxidant spray hole may have an inclined angle so that the oxidant is injected into the combustion space at a specific angle.

A second object of the present invention can be achieved as a combustion system characterized in that it comprises a combustion accelerator according to the above-mentioned first object in the combustion system.

It is a third object of the present invention to provide a combustion method using a combustion accelerator wherein the fuel is introduced into the fuel supply pipe through the fuel supply pipe, A first step of introducing the oxidant into the inner space between the outer tube and the inner tube through the provided oxidant supply part; Fuel is injected into a combustion space provided in a space between an outer surface of the fuel supply pipe and an inner pipe of the oxidant supply pipe through a plurality of fuel injection holes formed on the outer surface of the fuel supply pipe, and a plurality of oxidant spray holes formed in the inner pipe of the oxidant supply pipe A second step in which an oxidant is injected into the combustion space through the second step; A third step in which the fuel injected into the combustion space and the oxidant are mixed and burned; And a fourth step of injecting mixed combustion gas in the combustion space through a combustion gas injection nozzle provided at a rear end of the combustion space. Can be achieved as a combustion method using a combustion accelerator.

In addition, in the second step, the moving fuel nozzle tube, which is spaced apart from the outer surface of the fuel supply pipe by a predetermined distance and has a plurality of fuel injection control holes, is moved by the driving means to adjust the amount of fuel injected into the combustion space .

In the second step, the amount of oxidizing agent injected into the combustion space while being moved by the driving means is shifted by a predetermined distance from the inner or outer side of the inner pipe of the oxidizing agent pipe and the moving oxidizing agent nozzle tube in which a plurality of oxidizing agent- And the like.

The amount of fuel injected into the combustion space is controlled by the degree of overlap between the fuel injection control hole and the fuel injection hole according to the movement of the moving fuel nozzle tube, And the amount of fuel injected into the combustion space is controlled by the degree of overlap between the oxidant injection control hole and the oxidant injection hole.

The fuel injection holes are formed at different inclination angles so that the fuel is injected into the combustion space at different angles along the circumferential direction of the fuel supply pipe, and the fuel injection angle is adjusted according to the movement of the moving fuel nozzle tube , The oxidant spray holes are formed at different inclination angles so that the fuel is injected into the combustion space at different angles along the circumferential direction of the oxidant supply pipe, and the oxidant spray angle is adjusted according to the movement of the moving oxidant nozzle tube .

The driving means may move the moving-fuel nozzle tube and the oxidant-supplying pipe integrally.

According to one embodiment of the present invention, a radiative heating method using a combustion flame of a conventional industrial combustor is switched to a high-speed convection heating method in which the effect of convective heat transfer by high-speed injection of a combustion gas is enhanced, Effect.

In addition, according to the embodiment of the present invention, it is possible to improve the uniform uniform heating property, reduce the energy consumption, and reduce the scale of the object to be heated.

According to an embodiment of the present invention, in order to maximize the heat transfer to the object to be heated irrespective of the shape and the loading state of the object to be heated, the surface of the object is heated at a high temperature, The combustion accelerator concept is introduced as an apparatus for injecting high-temperature combustion gas at high speed so as to be able to make contact with high-temperature combustion gas, so as to prevent the high-temperature preheating and rapid uniform mixing of fuel / oxidizer for combustion safety / stability, miniaturization, It has an effect of being able to derive a structural shape capable of integrating the combustion function of ultra low excess air ratio for high load adiabatic combustion and suppressing the oxidizing atmosphere and capable of stable operation and control of the combustion accelerator.

It should be understood, however, that the effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be construed as limited.
1 is a longitudinal sectional view of an ultra-high speed combustion accelerator having a fuel-oxidant mixing function and a combustion control function according to an embodiment of the present invention,
2 is a cross-sectional view of an ultra-high speed combustion accelerator having fuel and oxidant mixing and combustion control functions according to an embodiment of the present invention,
FIG. 3A is a partial plan view of a fuel supply pipe or an oxidant supply pipe according to an embodiment of the present invention,
3B is a partial cross-sectional view of the fuel supply pipe or the oxidant supply pipe according to the embodiment of the present invention
4A is a partial plan view of a moving fuel nozzle tube or moving oxidizer nozzle tube according to an embodiment of the present invention,
4B is a partial longitudinal cross-sectional view of a moving fuel nozzle tube or moving oxidizer nozzle tube according to an embodiment of the present invention,
Figure 4c is a partial cross-sectional view of a moving fuel nozzle tube or moving oxidizer nozzle tube according to an embodiment of the present invention,
5A is a cross-sectional view of a moving fuel nozzle tube, a fuel supply tube or moving oxidizer nozzle tube, and an oxidant supply tube according to an embodiment of the present invention;
FIG. 5B is a partial cross-sectional view in which the moving fuel nozzle tube or the moving oxidizing nozzle tube is moved to the right in FIG. 5A,
Fig. 5C is a partial cross-sectional view in the state in which the moving fuel nozzle tube or the moving oxidizing nozzle tube is moved to the right in Fig. 5B,
6A is a partial longitudinal sectional view of a moving fuel nozzle tube or moving oxidizer nozzle tube in a state where it is located in a fuel injection hole or an oxidant injection hole having a first diameter and an inclination angle of 45 DEG, according to an embodiment of the present invention;
6B is a partial longitudinal sectional view of the moving fuel nozzle tube or moving oxidizer nozzle tube in a state where it is located in a fuel injection hole or an oxidant injection hole having a second diameter and an inclination angle of 20 DEG, according to an embodiment of the present invention;
FIG. 6C is a partial longitudinal sectional view of the moving fuel nozzle tube or the moving oxidizing nozzle tube in a state where the moving-oxidizing nozzle tube is located in the fuel injection hole or the oxidant-injecting hole having the third diameter and the inclination angle of 0 ° according to the embodiment of the present invention,
7A is a partial longitudinal sectional view of a moving fuel nozzle tube or moving oxidizer nozzle tube in a state where it is located in a fuel injection hole or an oxidant injection hole having a first diameter and an inclination angle of 0 DEG, according to an embodiment of the present invention;
7B is a partial longitudinal sectional view of the moving fuel nozzle tube or the moving oxidizer nozzle tube in a state where the moving-oxidizing nozzle tube is located in the fuel injection hole or the oxidant-injecting hole having the second diameter and the inclination angle of 20 DEG, according to the embodiment of the present invention;
Fig. 7C is a partial longitudinal sectional view of the moving fuel nozzle tube or moving oxidizer nozzle tube in a state where it is located in a fuel injection hole or an oxidizer injection hole having a third diameter and an inclination angle of 45 [deg.] According to an embodiment of the present invention;
FIG. 8A is a schematic view of an embodiment of the present invention wherein the moving fuel nozzle tube is located in a fuel injection hole having a first diameter and an inclination angle of 45 degrees, the moving oxidizer nozzle tube has an oxidizing agent having a first diameter, A partial longitudinal sectional view of the combustion accelerator in a state of being located in the injection hole,
FIG. 8B is an exploded perspective view in which the moving fuel nozzle tube is located in a fuel injection hole having a second diameter and an inclination angle of 20 DEG, the moving oxidizer nozzle tube has an oxidizing agent having a second diameter and an inclination angle of 20 DEG, A partial longitudinal sectional view of the combustion accelerator in a state of being located in the injection hole,
FIG. 8C is a schematic view of an embodiment of the present invention wherein the moving fuel nozzle tube is located in a fuel injection hole having a third diameter and a tilt angle of 0 DEG, the moving oxidant nozzle tube has an oxidizing agent having a third diameter, A partial longitudinal sectional view of the combustion accelerator in a state of being located in the injection hole,
FIG. 8D is a schematic cross-sectional view of an embodiment of the present invention wherein the moving fuel nozzle tube is located in a fuel injection hole having a first diameter and a tilt angle of 0 DEG, the moving oxidant nozzle tube is an oxidizer having a first diameter and a tilt angle of 0 DEG A partial longitudinal sectional view of the combustion accelerator in a state of being located in the injection hole,
FIG. 8E is a schematic view of an embodiment of the present invention wherein the moving fuel nozzle tube is located in a fuel injection hole having a second diameter and an inclination angle of 20 DEG, the moving oxidizer nozzle tube has an oxidizing agent having a second diameter, A partial longitudinal sectional view of the combustion accelerator in a state of being located in the injection hole,
FIG. 8f is a schematic view of an embodiment of the present invention in which the moving fuel nozzle tube is located in a fuel injection hole having a third diameter and an inclination angle of 45 degrees, the moving oxidizer nozzle tube has an oxidizing agent having a third diameter, 1 is a partial longitudinal cross-sectional view of a combustion accelerator in a state of being located in the injection hole.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Also in the figures, the thickness of the components is exaggerated for an effective description of the technical content.

Embodiments described herein will be described with reference to cross-sectional views and / or plan views that are ideal illustrations of the present invention. In the drawings, the thicknesses of the films and regions are exaggerated for an effective description of the technical content. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are produced according to the manufacturing process. For example, the etched area shown at right angles may be rounded or may have a shape with a certain curvature. Thus, the regions illustrated in the figures have attributes, and the shapes of the regions illustrated in the figures are intended to illustrate specific forms of regions of the elements and are not intended to limit the scope of the invention. Although the terms first, second, etc. have been used in various embodiments of the present disclosure to describe various components, these components should not be limited by these terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprises" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some instances, it should be noted that portions of the invention that are not commonly known in the description of the invention and are not significantly related to the invention do not describe confusing reasons to explain the present invention.

Hereinafter, the structure and function of the ultra-high speed combustion accelerator 100 having the fuel-oxidant mixing function and the combustion control function according to the embodiment of the present invention will be described. First, FIG. 1 shows a longitudinal sectional view of an ultra-high speed combustion accelerator 100 having fuel and oxidant mixing and combustion control functions according to an embodiment of the present invention. 2 shows a cross-sectional view of an ultra-high speed combustion accelerator 100 having fuel and oxidant mixing and combustion control functions according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, the super-high-speed combustion accelerator 100 having the fuel-oxidant mixing function and the combustion control function according to the embodiment of the present invention is configured such that fuel is supplied to the inside and injected into the combustion space 50 And the oxidant supply pipe 20 in the form of a double pipe provided outside the fuel supply pipe 10 with the combustion space 50 interposed therebetween.

In the fuel supply pipe 10 according to the embodiment of the present invention, fuel flows into the fuel supply unit 11 through the fuel supply unit 11, and a plurality of fuel injection holes 12 are formed on the outer surface. Accordingly, the fuel supplied to the inside is injected into the combustion space 50 through the plurality of fuel injection holes 12.

The oxidant supply pipe 20 according to an embodiment of the present invention includes an inner pipe 22 disposed at a specific distance from the outer surface of the fuel supply pipe 10 and having a plurality of oxidant spray holes 23, 25). ≪ / RTI > Therefore, the oxidant flows into the space between the inner pipe 22 and the outer pipe 21 through the oxidant supply part 25, and the oxidant introduced into the interspace passes through the plurality of oxidant spray holes 23 into the combustion space 50 .

That is, the fuel is injected through the fuel injection hole 12 into the combustion space 50 located in the space between the outer surface of the fuel supply pipe 10 and the inner pipe 22 of the oxidant supply pipe 20, The oxidizing agent is mixed and burned in the combustion space 50.

The combustion gas mixed and burned in the combustion space 50 is injected into the heating space through the combustion gas injection nozzle 51 provided at the rear end of the combustion space 50 to heat the heating space to a high temperature, And the object to be heated is heated through the heat transfer.

That is, the fuel and the oxidant are injected symmetrically opposite to each other in the combustion space 50 through the fuel injection hole 12 and the oxidant injection hole 23 to be mixed and burned. Then, the combustion gas is injected into the combustion gas injection nozzle 51 ), The high-speed convection which increases the convective heat transfer effect is converted into the thermal type, thereby enabling rapid uniform heating and energy saving.

FIG. 3A shows a partial plan view of a fuel supply pipe 10 or an oxidant supply pipe 20 according to an embodiment of the present invention. 3B shows a partial cross-sectional view of the fuel supply pipe 10 or the oxidant supply pipe 20 according to an embodiment of the present invention. 3A and 3B, the fuel injection hole 12 formed in the fuel supply pipe 10 and the oxidant injection hole 23 formed in the oxidant supply pipe 20 are arranged in the longitudinal direction of the injection holes 12, 23 are made of the same diameter D, d, but the rows of the injection holes 12, 23 arranged along the circumferential direction are composed of different diameters D, d. The injection holes 12 and 23 shown in FIGS. 3A and 3B have first and second diameters D1 and D1 along the circumferential direction and second diameters D2 and D3 smaller than the first diameters D1 and d1, d2 and the third diameters D3 and d3 smaller than the second diameters D2 and d2 may be repeatedly formed as one set.

1 and 2, a high-speed combustion accelerator 100 according to an embodiment of the present invention includes a moving fuel nozzle tube 30 and a moving oxidizer nozzle tube 40, The amount of fuel and oxidizer injected can be adjusted.

4A shows a partial plan view of a moving fuel nozzle tube 30 or a moving oxidizer nozzle tube according to an embodiment of the present invention. 4B is a partial longitudinal sectional view of the moving fuel nozzle tube 30 or the moving oxidizer nozzle tube according to the embodiment of the present invention. 4C shows a partial cross-sectional view of the moving fuel nozzle tube 30 or moving oxidizer nozzle tube according to an embodiment of the present invention.

1 and 2, the moving fuel nozzle tube 30 according to the embodiment of the present invention is spaced apart from the inside of the outer surface of the fuel supply pipe 10 by a predetermined distance and has a plurality of fuel injection adjusting holes 31 Is formed and configured. In addition, this moving fuel nozzle tube 30 can be moved by the driving means while being rotated about the longitudinal central axis of the super-high speed combustion accelerator 100.

The amount of fuel injected into the combustion space 50 can be adjusted according to the diameter D of the fuel injection hole 12 and the degree of overlap between the fuel injection hole 12 and the fuel injection adjusting hole 31. [

1 and 2, the moving oxidant nozzle tube 40 according to the embodiment of the present invention is spaced apart from the inner side of the inner tube 22 of the oxidant supply tube 20 by a predetermined distance, And an injection adjusting hole 41 is formed. This moving oxidizing nozzle tube 40 can be moved by the driving means while being rotated about the longitudinal central axis of the super-high speed combustion accelerator 100.

The amount of oxidizing agent injected into the combustion space 50 can be controlled according to the diameter d of the oxidizing agent injection hole 23 and the degree of overlap between the oxidizing agent injection hole 23 and the oxidizing agent injection adjusting hole 41. [

The diameters D and d of the fuel injection holes 12 and the oxidant injection holes 23 corresponding to each other have various diameters D and d in order to maintain the minimum-maximum amount of combustion and the design operating air ratio (fuel- . ≪ / RTI >

The moving fuel nozzle tube 30 and the moving oxidizing nozzle tube 40 are integrally rotated so that the moving fuel nozzle tube 30 and the moving oxidizing nozzle tube 40 are integrally rotated by the driving means, The superimposition rate of the oxidizing agent injection hole 12 and the fuel injection adjusting hole 31 and the superimposition rate of the oxidizing agent injection hole 23 and the oxidizing agent injection adjusting hole 41 can be easily maintained.

The fuel injection holes 12 are configured to have the same diameter D in the longitudinal direction of the fuel supply pipe 10 and have different diameters D along the circumferential direction of the fuel supply pipe 10 And the oxidant spray holes 23 may also be configured to have the same diameter d in the longitudinal direction of the oxidant supply pipe 20 and to have different diameters d along the circumferential direction of the oxidant supply pipe 20. [

The diameter D of the fuel injection hole 12 corresponding to the position of the fuel injection adjusting hole 31 and the overlapping ratio of the fuel injection hole 12 corresponding to the position of the fuel injection adjusting hole 31, The diameter d of the oxidant spray hole 23 corresponding to the position of the oxidant spray adjusting hole 41 can be adjusted and changed as the moving oxidant nozzle tube 40 is rotated in the circumferential direction, , The amount of the oxidant injected into the combustion space 50 can be controlled or changed according to the overlap ratio.

According to an embodiment of the present invention, as will be described later, the fuel injection hole 12 is formed to have the same injection inclination angle in the longitudinal direction of the fuel supply pipe 10, and the circumferential direction of the fuel supply pipe 10 The oxidant spray holes 23 may be configured to have the same inclination angle in the longitudinal direction of the oxidant supply pipe 20 and have different inclination angles along the circumferential direction of the oxidant supply pipe 20 have.

The fuel injection nozzle 30 is rotated in the circumferential direction so that the injection of the fuel injected into the combustion space 50 in accordance with the inclination angle of the fuel injection hole 12 corresponding to the position of the fuel injection adjusting hole 31 And the moving oxidizing nozzle tube 40 is rotated in the circumferential direction so that the combustion space 50 is formed in accordance with the inclination angle of the oxidizing agent jetting hole 23 corresponding to the position of the oxidizing agent jetting adjusting hole 41, The angle of spray of the oxidizing agent injected into the combustion chamber can be adjusted and changed.

Hereinafter, the combustion method using the above-described combustion accelerator 100 will be described. The combustion method using the combustion accelerator 100 according to an embodiment of the present invention is a method in which fuel is introduced into the fuel supply pipe 10 through the fuel supply unit 11 and is separated from the outer surface of the fuel supply pipe 10 A first step of introducing an oxidant into the inner space 24 between the outer tube 21 and the inner tube 22 through the oxidant supply part 25 provided in the outer tube 21 of the double tube type oxidant supply tube 20 arranged in the shape of a double tube; A combustion space 50 provided in a space between the outer surface of the fuel supply pipe 10 and the inner pipe 22 of the oxidant supply pipe 20 through a plurality of fuel injection holes 12 formed on the outer surface of the fuel supply pipe 10 A second step in which fuel is injected and an oxidant is injected into the combustion space 50 through a plurality of oxidant injection holes 23 formed in an inner pipe 22 of the oxidant supply pipe 20; A third step in which the fuel injected into the combustion space 50 and the oxidant are mixed and burned; And a fourth step of injecting the mixed combustion gas in the combustion space 50 through the combustion gas injection nozzle 51 provided at the rear end of the combustion space 50. [

In the second step, the moving fuel nozzle tube 30, which is spaced apart from the inside or outside of the outer surface of the fuel supply pipe 10 and has a plurality of fuel injection adjusting holes 31, The amount of fuel injected into the combustion space 50 while being moved by the driving means is regulated.

The moving oxidizing nozzle tube 40, which is spaced apart from the inner pipe 22 of the oxidizing agent supply pipe 20 by a predetermined distance and in which a plurality of oxidant injection adjusting holes 41 are formed, is moved by the driving means, The amount of the oxidizing agent injected into the combustion chamber 50 is controlled.

The amount of fuel injected into the combustion space 50 is regulated by the degree of overlap between the fuel injection hole 31 and the fuel injection hole 12 as the moving fuel nozzle tube 30 moves The amount of fuel injected into the combustion space 50 is controlled by the degree of overlap between the oxidant injection hole 41 and the oxidant spray hole 23 as the moving oxidant nozzle tube 40 moves .

The fuel injection holes 12 are inclined at different angles so that the fuel is injected into the combustion space 50 at different angles along the circumferential direction of the fuel supply pipe 10, The oxidant spray holes 23 are formed at different inclined angles so that the fuel is injected into the combustion space 50 at a specific angle different from each other along the circumferential direction of the oxidant supply pipe 20, As the moving oxidant nozzle tube 40 moves, the oxidant spray angle is adjusted.

Hereinafter, the fuel injection hole 12 and the oxidant spray hole 12 having the first diameters D1 and d1, the second diameters D2 and d2, and the third diameters D3 and d3 are repeatedly formed, 23) according to an embodiment of the present invention. The number of the fuel injection holes 12 and the oxidant injection holes 23, the size of the diameter, and the inclination angle of the fuel injection holes 12 and the oxidizing agent injection holes 23 described below are described only as preferred examples.

5A shows a cross-sectional view of a moving fuel nozzle tube 30 and a fuel supply tube 10 or a moving oxidizer nozzle tube 40 and an oxidizer tube 20 according to an embodiment of the present invention. FIG. 5B shows a partial cross-sectional view of the state in which the moving fuel nozzle tube 30 or the moving oxidizing nozzle tube 40 is moved to the right in FIG. 5A. 5C shows a partial cross-sectional view of the state in which the moving fuel nozzle tube 30 or the moving oxidizing nozzle tube 40 is moved to the right in FIG. 5B.

6A is a schematic view illustrating a fuel injection hole 12 or a fuel injection hole 12 having a first diameter D1 and a first diameter D1 and having an inclination angle of 45 DEG, according to an embodiment of the present invention. And shows a partial longitudinal cross-sectional view of the oxidant spray hole 23 in a state where it is positioned. 6B shows a state in which the moving fuel nozzle tube 30 or the moving oxidizer nozzle tube 40 has the second diameter D2 and d2 and the fuel injection hole 12 ) Or the oxidant spray hole (23). 6C is a sectional view of the moving fuel nozzle tube 30 or the moving oxidizing nozzle tube 40 according to an embodiment of the present invention when the fuel injection holes 12 having the third diameters D3 and d3 and having inclination angles of 0 ) Or the oxidant spray hole (23).

7A is a side view of a fuel injection nozzle 12 or a fuel injection nozzle 12 having a first diameter D1 and a first diameter D1 and having an inclination angle of 0 DEG, And shows a partial longitudinal cross-sectional view of the oxidant spray hole 23 in a state where it is positioned. 7B is a sectional view of the moving fuel nozzle tube 30 or the moving oxidizer nozzle tube 40 according to an embodiment of the present invention when the fuel injection holes 12 having the second diameters D2 and d2 and having inclination angles of 20 ) Or the oxidant spray hole (23). 7C is a sectional view of the fuel injection hole 12 or the fuel injection hole 12 having the third diameter D3 and the third diameter d3 and having an inclination angle of 45 DEG, according to an embodiment of the present invention. And shows a partial longitudinal cross-sectional view of the oxidant spray hole 23 in a state where it is positioned.

5A, the fuel injection adjusting hole 31 of the moving fuel nozzle tube 30 or the oxidant injection adjusting hole 41 of the moving oxidizing nozzle tube 40 have the first diameters D1 and d1 It is possible to inject the most amount of fuel and the amount of oxidant into the combustion space 50 when the fuel injection hole 12 or the oxidant injection hole 23 is located at a position corresponding to the fuel injection hole 12 or the oxidant injection hole 23. As shown in FIG. When the fuel injection hole 12 or the oxidant injection hole 23 having the first diameters D1 and d1 has an inclination angle of 45 degrees, the fuel and the oxidant are injected into the combustion space 50 at an angle of 45 [ As shown in FIG. 7A, when the fuel injection hole 12 or the oxidant spray hole 23 having the first diameters D1 and d1 has an inclination angle of 0 °, the combustion space 50 is filled with 0 The fuel and the oxidant can be injected.

5b, the movement of the moving fuel nozzle tube 30 and the moving oxidizing nozzle tube 40 causes the fuel injection adjusting hole 31 of the moving fuel nozzle tube 30 or the moving oxidizing nozzle tube 40 of the moving fuel nozzle tube 30, When the oxidant injection control hole 41 of the fuel injection valve 40 is located at a position corresponding to the fuel injection hole 12 or the oxidant injection hole 23 having the second diameters D2 and d2, The fuel injection holes 12 or the oxidant injection holes 23 having the second diameters D2 and d2 can be injected into the combustion space 50 as shown in Figures 6B and 7B, The fuel and the oxidant can be injected into the combustion space 50 with a spray angle of 20 °.

5A, by the movement of the moving fuel nozzle tube 30 and the moving oxidizing nozzle tube 40, the fuel injection adjusting hole 31 of the moving fuel nozzle tube 30 or the moving oxidizing nozzle tube 40 of the moving fuel nozzle tube 30, When the oxidant injection control hole 41 of the fuel injection valve 40 is located at a position corresponding to the fuel injection hole 12 or the oxidant injection hole 23 having the third diameters D3 and d3, The fuel injection hole 12 or the oxidant spray hole 23 having the third diameters D3 and d3 can be injected into the combustion space 50 as shown in FIG. The fuel injection holes 12 having the third diameters D3 and d3 or the oxidizing agent 12 having the third diameters D3 and d3 are injected with the injection angle of 0 ° into the combustion space 50, When the injection hole 23 has an inclination angle of 45 degrees, the fuel and the oxidant can be injected into the combustion space 50 with an injection angle of 45 degrees.

8A is a perspective view of a moving fuel nozzle tube 30 according to an embodiment of the present invention in which the moving fuel nozzle tube 30 is positioned in the fuel injection hole 12 having the first diameter D1 and d1 and having an inclination angle of 45 DEG, Is a partial longitudinal cross-sectional view of the combustion accelerator 100 in the state of being located in the oxidant spray hole 23 having the first diameters D1 and d1 and having an inclination angle of 45 degrees.

8B is a perspective view of the moving fuel nozzle tube 30 according to an embodiment of the present invention. The moving fuel nozzle tube 30 is positioned in the fuel injection hole 12 having the second diameters D2 and d2 and having an inclination angle of 20 degrees. Is a partial longitudinal cross-sectional view of the combustion accelerator 100 in the state of being located in the oxidant spray hole 23 having the second diameter D2, d2 and having an inclination angle of 20 degrees.

8C is a schematic view of the moving fuel nozzle tube 30 according to an embodiment of the present invention. The moving fuel nozzle tube 30 is positioned in the fuel injection hole 12 having the third diameters D3 and D3 and having an inclination angle of 0 DEG, Is a partial longitudinal cross-sectional view of the combustion accelerator 100 in the state of being positioned in the oxidant spray hole 23 having the third diameters D3 and D3 and having an inclination angle of 0 DEG.

8D is a schematic view of a moving fuel nozzle tube 30 according to an embodiment of the present invention. The moving fuel nozzle tube 30 is positioned in a fuel injection hole 12 having a first diameter D1, d1 and an inclination angle of 0 DEG, Of the combustion accelerator 100 in the state of being positioned in the oxidant spray hole 23 having the first diameters D1 and d1 and having an inclination angle of 0 degrees.

8E is a sectional view of the moving fuel nozzle tube 30 according to an embodiment of the present invention in which the moving fuel nozzle tube 30 is positioned in the fuel injection hole 12 having the second diameter D2 and d2 and having an inclination angle of 20 DEG, Is a partial longitudinal cross-sectional view of the combustion accelerator 100 in the state of being located in the oxidant spray hole 23 having the second diameter D2, d2 and having an inclination angle of 20 degrees.

8F is a sectional view of the moving fuel nozzle tube 30 according to an embodiment of the present invention. The moving fuel nozzle tube 30 is positioned in the fuel injection hole 12 having the third diameters D3 and D3 and having an inclination angle of 45 degrees. Is a partial longitudinal cross-sectional view of the combustion accelerator 100 in the state of being positioned in the oxidant spray hole 23 having the third diameters D3 and D3 and having an inclination angle of 45 degrees.

8A to 8F, the fuel injection holes 12 of the fuel supply pipe 10 and the oxidant injection holes 23 of the oxidant supply pipe 20 are the same in the longitudinal direction, and the diameters in the circumferential direction And the fuel injection adjusting hole 31 is moved while being moved to a corresponding position of the fuel injection hole 12 having a specific diameter and an inclination angle so that the fuel injection amount and the injection angle can be adjusted and changed And the oxidant injection adjusting hole 41 is moved while being moved to a corresponding position of the oxidant spray hole 23 having a specific diameter and an inclined angle so that the oxidant spray amount and the spray angle can be adjusted and changed.

Therefore, the moving amount of the fuel and the oxidant, that is, the combustion amount (the combustion load or the fuel amount) can be adjusted by controlling the moving distance of the moving fuel nozzle pipe 30 and the moving oxidizer nozzle pipe 40. The relative position of the moving oxidizing nozzle tube 40 with respect to the moving fuel nozzle tube 30 with respect to the nozzle can be arbitrarily finely adjusted to adjust the moving air ratio.

It should be noted that the above-described apparatus and method are not limited to the configurations and methods of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments are selectively combined .

1: Fuel
2: oxidizing agent
10: fuel supply pipe
11: fuel supply portion
12: Fuel injection hole
20: oxidant supply pipe
21: Appearance
22: Inner pipe
23: Oxidizer injection hole
24: interior space
25:
30: Moving fuel nozzle tube
31: Fuel injection control hole
40: Moving oxidizer nozzle tube
41: Oxidizer injection control hole
50: combustion space
51: Combustion gas injection nozzle
100: Combustion accelerator
D1: Fuel injection hole first diameter
D2: Fuel injection hole 2nd diameter
D3: Fuel injection hole 3rd diameter
d1: oxidant spray hole first diameter
d2: oxidant injection hole second diameter
d3: oxidant spray hole third diameter

Claims (20)

In the combustion accelerator,
A fuel supply pipe for introducing fuel into the fuel supply portion through the fuel supply portion and having a plurality of fuel injection holes on an outer surface thereof;
An inner pipe having a plurality of oxidant spray holes arranged at a specific distance from the outer surface of the fuel supply pipe and an outer pipe having an oxidant supply portion, the oxidant being introduced into the space between the inner pipe and the outer pipe through the oxidant supply portion, Supply pipe; And
A combustion space provided in the space between the outer surface of the fuel supply pipe and the inner pipe of the oxidant supply pipe and in which fuel is injected through the fuel injection hole and an oxidant is injected through the oxidant injection hole to be mixed and burned;
A moving fuel nozzle tube spaced apart from the outer surface of the fuel supply pipe by a predetermined distance and formed with a plurality of fuel injection control holes;
A moving oxidant nozzle tube spaced apart from or spaced apart from the oxidant pipe inner pipe by a plurality of oxidant injection control holes and formed therein; And
And driving means for moving the moving fuel nozzle tube relative to the longitudinal center axis of the fuel supply tube and moving the moving oxidizing nozzle tube relative to the longitudinal center axis of the oxidizing agent supply tube,
Wherein the fuel and the oxidant are injected through the fuel injection hole and the oxidant injection hole, respectively, symmetrically opposite to each other in the combustion space,
Wherein the fuel injection holes have different diameters along the circumferential direction of the fuel supply pipe and the oxidant injection holes have different diameters along the circumferential direction of the oxidant supply pipe,
The amount of fuel injected into the combustion space is controlled by the degree of overlap between the fuel injection control hole and the fuel injection hole in accordance with the movement of the moving fuel nozzle tube, Wherein the amount of the oxidizing agent injected into the combustion space is controlled by the degree of overlap between the injection adjusting hole and the oxidizing agent injecting hole.
delete The method according to claim 1,
Further comprising a combustion gas injection nozzle provided at a rear end of the combustion space and injecting a mixed combustion gas in the combustion space.
delete delete delete The method according to claim 1,
Wherein the driving means moves the moving fuel nozzle tube and the oxidizing agent supply pipe integrally.
delete delete delete delete The method according to claim 1,
Wherein the fuel injection hole is formed with an inclination angle so that the fuel is injected into the combustion space at a specific angle.
13. The method of claim 12,
Wherein the oxidant spray hole has an inclined angle so that the oxidant is injected into the combustion space at a specific angle.
In the combustion system,
A combustion system comprising a combustion accelerator according to any one of claims 1, 3, 7, and 12 to 13.
A combustion method using an ultra-high speed combustion accelerator having a fuel-oxidant mixing function and a combustion control function according to claim 1,
The oxidant is introduced into the inner space between the outer tube and the inner tube through the oxidant supply portion provided on the outer surface of the double tube type oxidant supply tube which is arranged to be supplied with fuel through the fuel supply portion of the fuel supply tube and spaced apart from the outer surface of the fuel supply tube A first step;
Fuel is injected into a combustion space provided in a space between an outer surface of the fuel supply pipe and an inner pipe of the oxidant supply pipe through a plurality of fuel injection holes formed on the outer surface of the fuel supply pipe, and a plurality of oxidant spray holes formed in the inner pipe of the oxidant supply pipe A second step in which an oxidant is injected into the combustion space through the second step;
A third step in which the fuel injected into the combustion space and the oxidant are mixed and burned; And
And a fourth step of injecting mixed combustion gas in the combustion space through a combustion gas injection nozzle provided at a rear end of the combustion space. Combustion method using accelerator.
16. The method of claim 15,
In the second step,
Characterized in that an amount of fuel injected into the combustion space is adjusted while a moving fuel nozzle tube having a plurality of fuel injection adjusting holes formed therein is spaced apart from the inner or outer side of the outer surface of the fuel supply pipe by the driving means. Combustion method using ultra - high speed combustion accelerator with mixing and combustion control function.
17. The method of claim 16,
In the second step,
Characterized in that the amount of oxidizing agent injected into the combustion space is controlled by moving the moving oxidizing agent nozzle tube having a plurality of oxidizing agent injection adjusting holes spaced from the inner or outer side of the oxidizing agent pipe inner tube by the driving means. Combustion method using ultra - high speed combustion accelerator with oxidizer mixing and combustion control function.
18. The method of claim 17,
The amount of fuel injected into the combustion space is controlled by the degree of overlap between the fuel injection control hole and the fuel injection hole as the moving fuel nozzle tube moves,
Wherein the amount of fuel injected into the combustion space is controlled by the degree of overlap between the oxidant injection hole and the oxidant injection hole as the moving oxidant nozzle tube moves. A combustion method using an ultra-high speed combustion accelerator.
19. The method of claim 18,
Wherein the fuel injection holes are inclined at different angles so that the fuel is injected into the combustion space at different angles along the circumferential direction of the fuel supply pipe and the fuel injection angle is adjusted in accordance with the movement of the moving fuel nozzle pipe,
The oxidant spray holes are formed at different inclination angles so that the fuel is injected into the combustion space at different angles along the circumferential direction of the oxidant supply pipe, and the oxidant spray angle is controlled according to the movement of the moving oxidant nozzle tube And a combustion method using an ultra-high speed combustion accelerator having an oxidant mixing function and a combustion control function.
20. The method of claim 19,
Wherein the driving means moves the moving-fuel nozzle tube and the oxidant-supplying pipe integrally with each other. The combustion method using an ultra-high-speed combustion accelerator having a fuel-oxidant mixing function and a combustion control function.
KR1020150111102A 2015-08-06 2015-08-06 High velocity jet gas burner with fuel-oxidant mixing and combustion control KR101674311B1 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280705A (en) * 1992-06-22 1994-01-25 General Electric Company Fuel injection system for scramjet engines
JPH06229552A (en) * 1993-01-29 1994-08-16 Mitsubishi Heavy Ind Ltd Liquid fuel burner
KR0164291B1 (en) * 1995-12-08 1999-01-15 양재학 Combustion apparatus for reducing nox of boiler
KR100716889B1 (en) 2006-05-18 2007-05-09 한국전력공사 A fuel nozzle with variable injection location of a dry low nox gas turbine combustor for power generation
KR100872841B1 (en) 2007-09-28 2008-12-09 한국전력공사 A fuel nozzle of gas turbine combustor for dme and its design method
KR101422987B1 (en) 2011-01-14 2014-07-23 미츠비시 쥬고교 가부시키가이샤 Fuel nozzle, gas turbine combustor equipped with same, and gas turbine equipped with this gas turbine combustor
KR101470774B1 (en) 2011-03-30 2014-12-08 미츠비시 쥬고교 가부시키가이샤 Nozzle, gas turbine combustor and gas turbine
KR20150023885A (en) 2012-07-30 2015-03-05 미츠비시 히타치 파워 시스템즈 가부시키가이샤 Combustor nozzle assembly, and combustor and gas turbine provided with same

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280705A (en) * 1992-06-22 1994-01-25 General Electric Company Fuel injection system for scramjet engines
JPH06229552A (en) * 1993-01-29 1994-08-16 Mitsubishi Heavy Ind Ltd Liquid fuel burner
KR0164291B1 (en) * 1995-12-08 1999-01-15 양재학 Combustion apparatus for reducing nox of boiler
KR100716889B1 (en) 2006-05-18 2007-05-09 한국전력공사 A fuel nozzle with variable injection location of a dry low nox gas turbine combustor for power generation
KR100872841B1 (en) 2007-09-28 2008-12-09 한국전력공사 A fuel nozzle of gas turbine combustor for dme and its design method
KR101422987B1 (en) 2011-01-14 2014-07-23 미츠비시 쥬고교 가부시키가이샤 Fuel nozzle, gas turbine combustor equipped with same, and gas turbine equipped with this gas turbine combustor
KR101470774B1 (en) 2011-03-30 2014-12-08 미츠비시 쥬고교 가부시키가이샤 Nozzle, gas turbine combustor and gas turbine
KR20150023885A (en) 2012-07-30 2015-03-05 미츠비시 히타치 파워 시스템즈 가부시키가이샤 Combustor nozzle assembly, and combustor and gas turbine provided with same

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