CN108679611B - Burner assembly of injection type combustion device - Google Patents

Abstract

The application provides a burner assembly of an injection type combustion device, which comprises a protective cover part, a plurality of venturi burners and an air supply pipeline. The protective cover part is a part of a protective cover of the injection type combustion device, and a plurality of mounting holes are formed in the wall portion of the protective cover part. Each venturi burner comprises an air inlet part for injecting air and a head part for generating flame, and a plurality of venturi burners are respectively fixed in a plurality of mounting holes, so that the air inlet part and the head part of each venturi burner are respectively positioned at two sides of the wall part of the protective cover part. The gas supply pipeline is communicated with the venturi combustors to supply gas for the venturi combustors.

Description

Burner assembly of injection type combustion device

Technical Field

The application relates to an injection type combustion device, in particular to a combustor assembly of the injection type combustion device.

Background

In the petrochemical device, the emptying torch system can timely treat redundant, harmful and unbalanced waste gas discharged from the production device, and can treat unqualified gas generated during test run and start and stop and a large amount of gas instantaneously discharged during accidents, so that the normal and safe operation of the device is ensured.

The emptying torch system generally adopts an injection type combustion device, and the injection type combustion device designed before the inventor comprises a plurality of layers of venturi combustors in the vertical direction for combusting fuel gas. Several layers of protective cover in vertical direction are set around the Venturi burners to form flame cavity to block heat radiation. Each layer of protective cover surrounds one layer of burner, and gaps are reserved between adjacent layers of protective covers, so that the air inlet part of the burner is communicated with the outside, and air is injected. However, in the vicinity of residential areas, offices, and production areas, there are higher demands on indexes such as noise, flame length, and wall cylinder temperature. Accordingly, there is a need for further improvements to existing injection type combustion devices.

Disclosure of Invention

In view of the above, the present application provides a burner assembly of an injection type burner capable of improving at least one of noise, flame length and wall cylinder temperature.

The application provides a burner assembly of an injection type combustion device, which comprises a protective cover part, a plurality of venturi burners and an air supply pipeline. The protective cover part is a part of a protective cover of the injection type combustion device, and a plurality of mounting holes are formed in the wall portion of the protective cover part. Each venturi burner comprises an air inlet part for injecting air and a head part for generating flame, and a plurality of venturi burners are respectively fixed in a plurality of mounting holes, so that the air inlet part and the head part of each venturi burner are respectively positioned at two sides of the wall part of the protective cover part. The gas supply pipeline is communicated with the venturi combustors to supply gas for the venturi combustors.

In one embodiment, the protective cover part comprises a rectangular frame, the rectangular frame comprises two opposite first side walls and two opposite second side walls, the two first side walls and the two second side walls are connected with each other to form a rectangle, and the rectangular frame of the protective cover part comprises one or more protective cover units adjacent in the vertical direction.

In one embodiment, the upper and lower edges of each shield unit are provided with flanges perpendicular to the first and second sidewalls, and adjacent shield units are fixed to each other by the flanges.

In an embodiment, at least part of the mounting holes are formed in the two first side walls and/or the two second side walls of each shield unit, and at least part of the venturi burners are mounted in the mounting holes of each shield unit.

In one embodiment, the shield member comprises a plate having a vertically extending flange at an edge thereof for connection with a flange of another adjacent plate of the burner assembly.

In one embodiment, the shield member comprises a rectangular frame, wherein all four side walls of the rectangular frame are provided with mounting holes, and at least part of the venturi burner is mounted in the mounting holes of all four side walls.

In one embodiment, the mounting holes on the four side walls are elongated mounting holes extending in the horizontal direction, a plurality of venturi burners are mounted in the same elongated mounting hole, and a plurality of the elongated mounting holes are spaced apart in the vertical direction.

In an embodiment, at least some of the venturi burners are arranged in several transverse rows in the vertical direction.

In an embodiment, the air supply pipeline comprises an air pipe and distribution pipes, wherein the air pipe is used for being communicated with one output of a gas treatment unit and used for receiving gas to be combusted, the distribution pipes are provided with a plurality of branches, and each distribution pipe is communicated with the air pipe and simultaneously communicated with a part of venturi combustors so as to distribute the gas to the part of venturi combustors.

In an embodiment, the venturi burners are arranged in a plurality of horizontal rows in the vertical direction, a section of the gas transmission pipe connected with the distributing pipe is vertically arranged, the distributing pipes are horizontally arranged, and each distributing pipe supplies gas for the venturi burner in one horizontal row.

In one embodiment, the section of the gas delivery pipe connected with the distributing pipe is located at the middle position of the distributing pipe, and the tail ends of the distributing pipes are communicated with each other by using communicating pipes.

In summary, the present application provides a burner assembly of an injection burner. According to the application, the protective cover is provided with a plurality of mounting holes, the venturi combustors penetrate through the mounting holes, the head part for generating flame is positioned in the flame intensity of the protective cover, and the air inlet part for injecting air is positioned outside the protective cover. By the design, air can be injected in a larger range, and on one hand, the number of the burners can be remarkably increased, so that the air injection quantity of each burner is not insufficient. On the other hand, at the periphery of the protective cover, due to the injection effect of the venturi burner, a part of peripheral air is injected into the venturi burner to be involved in combustion, and a large amount of peripheral cold air can be caused to move to the protective cover to dissipate heat of the protective cover. In the above-described embodiments of the present application, the number of venturi burners is significantly increased, and the size and power of a single venturi burner can be significantly reduced for treating the same amount of fuel gas, thereby significantly reducing noise and flame length. In addition, the venturi burners positioned on the opposite sides of the protective cover spray oppositely, and a part of flame lengths are mutually offset, so that the flame lengths are effectively reduced.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of an induction burner.

Fig. 2 is a side view of the injection burner of fig. 1.

Fig. 3 is a perspective view of a combustion system of the injection combustion device of fig. 1.

Fig. 4 is a cross-sectional view of fig. 3.

FIG. 5 is an exploded perspective view of the burner assembly.

FIG. 6 is a perspective combination view of another embodiment of a burner assembly.

Fig. 7 is a schematic perspective view of a second embodiment of an induction burner.

Fig. 8 is a plan view of fig. 7.

FIG. 9 is an exploded perspective view of a burner assembly of a second embodiment of an induction burner.

Fig. 10 is a perspective combined view of a burner group of a second embodiment of an injection burner.

Fig. 11 is a perspective view of a shield of a first embodiment of an injection burner coupled to an outer frame.

Fig. 12 is an exploded perspective view of fig. 11.

Fig. 13 is a perspective view of a shield of a second embodiment of an induction burner.

Detailed Description

Before the embodiments are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The application is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of the terms "comprising," "including," "having," and the like are intended to encompass the items listed thereafter and equivalents thereof as well as additional items. In particular, when "a certain element" is described, the present application is not limited to the number of the element as one, but may include a plurality of the elements.

In addition, the description and claims of the present application are described in terms of the vertical placement (normal use state) of the injection type combustion apparatus, so that a great deal of directional terms in the vertical direction and the horizontal direction are described herein with reference to the vertical placement state thereof. It will be appreciated that the injection burner of the present application may be placed upside down (e.g., during transportation) and that the directional terms should be rotated 90 degrees for understanding.

As shown in fig. 1 to 6, the present application provides an injection type combustion apparatus 10, and the injection type combustion apparatus 10 includes a hood 12, a combustion system, and a gas processing unit 14. An outer frame 16 is fixedly connected to the outside of the shield 12. In one embodiment, the housing 16 may be a skid housing to facilitate low cost transportation and securement of the injection burner 10. The combustion system comprises a number of venturi burners 18 to burn the gas to be combusted. The gas treatment unit 14 comprises a control unit and various valves and pipes for treating the gas to be treated, such as removing the liquid, etc., and delivering the treated gas to a combustion system for combustion. In the illustrated embodiment, a control unit is disposed within the skid housing 16 at the bottom of the injection burner 10 and a plurality of venturi burners 18 are connected to the gas treatment unit 14 by gas supply lines to receive the gas to be treated.

The inner side of the shield 12 forms a flame chamber 20 for enclosing a flame. In this embodiment, the protection cover 12 has a rectangular shape, and the protection cover 12 has an upper opening and a lower opening in the vertical direction. Each venturi burner 18 has an inlet portion 22 for injecting air and a head portion 24 for generating a flame, and a plurality of venturi burners 18 pass through a wall portion 26 of the hood 12 such that the head portion 24 of the venturi burner 18 is located within the flame chamber 20 and the inlet portion 22 of the venturi burner 18 is located outside of the hood 12. In the illustrated embodiment, the venturi burner 18 is also supported on the wall 26 of the hood 12. The arrangement is such that a portion of the air from the exterior of the shroud 12 can reach the outer wall of the shroud 12 to cool the wall 26 of the shroud 12 during the injection of the air from the exterior of the shroud 12 by the plurality of venturi burners 18; at the same time, the provision of the venturi burners 18 in the wall portion 26 of the hood 12 allows for an increase in the number of venturi burners 18, a reduction in the size and power of the individual venturi burners 18. Reducing the size of the venturi burners 18, but at the same time increasing the number of venturi burners 18, can provide the same processing capacity, but can greatly reduce the noise emitted by the burners when they burn.

It should be noted that, in this embodiment, the design of the protection cover 12 into a rectangular shape is only one implementation of the present application, and in other embodiments, the protection cover 12 may be designed into other shapes according to actual design needs, which is not limited by the present application. It should also be noted that in the present application, the hood 12 also includes a top hood unit located at the top, but the application is not directed to a top hood unit and thus the top hood unit is not described in detail herein.

A plurality of venturi burners 18 are mounted to a wall portion 26 of the hood 12. More specifically, the venturi burner 18 is mounted obliquely to the wall 26 of the hood 12, and the head 24 of the venturi burner 18 is inclined toward the upper opening of the hood 12, preventing flames ejected during combustion of the venturi burner 18 from burning against the inner wall of the hood 12 and damaging the hood 12.

In one embodiment, the angle between the venturi axis of the venturi burner 18 and the horizontal may be set in the range of 0-30 degrees, preferably 10-20 degrees. In one embodiment, the venturi axis of the venturi burner 18 is set at 15 degrees from horizontal.

In the illustrated embodiment, the venturi burners 18 are disposed opposite one another on the hood 12, i.e., the venturi burners 18 are disposed on two opposite side walls of a rectangle, and the venturi burners 18 on the two side walls are opposed to one another during combustion. Because of a slight upward inclination angle, the components of the flame in the horizontal direction are mutually offset, and upward components are added to form upward power, so that the flame is prevented from being stretched to contact with the opposite wall surfaces, and the temperature of the wall cylinder exceeds the standard and changes color.

In the illustrated embodiment, the combustion system includes a plurality of individually mountable burner assemblies. Because the venturi burners 18 are more in number, the combustion system is modularized, so that the installation efficiency can be improved to a great extent, the assembly is convenient, and the disassembly, the maintenance and the replacement are convenient when the venturi burners 18 or the protective cover 12 are in failure.

In the embodiment of fig. 1-6, the combustion system includes four vertically stacked burner assemblies, each including a shroud component, a number of venturi burners 18, and a gas supply line. The lowermost burner assembly 28 will be described by way of example.

The burner assembly 28 includes a shroud component 30, a plurality of venturi burners 18, and an air supply line 32. The protective cover part 30 is a part of the protective cover 12 of the injection type combustion device 10, and a plurality of mounting holes 34 are formed in the wall of the protective cover part 30. The venturi burners 18 are respectively fixed in the mounting holes 34 such that the air inlet portion 22 and the head portion 24 of each venturi burner 18 are respectively located at both sides of the wall portion of the hood part 30. The gas supply line 32 communicates with the gas treatment unit 14 and the plurality of venturi burners 18, respectively, to supply the plurality of venturi burners 18 with gas.

The cover member 30 includes a rectangular frame 36, each rectangular frame 36 including two opposing first side walls 38 and two opposing second side walls 40, the two first side walls 38 and the two second side walls 40 being interconnected to form a rectangle. The rectangular frame 36 of the cover member 30 includes one or more vertically adjacent cover units 42. In the embodiment shown in fig. 3-5, the rectangular frame 36 of the cover member 30 includes a plurality of vertically adjacent cover units 42, while in the embodiment shown in fig. 6, the rectangular frame 36 of the cover member 30 includes only one cover unit 42.

The upper and lower edges of each of the cover units 42 are provided with flanges 44, and adjacent cover units 42 are fastened to each other by means of the flanges 44, for example, by bolts or welding. In the illustrated embodiment, these flanges 44 are perpendicular to the first and second sidewalls 38, 40, respectively.

At least a portion of the mounting holes 34 are formed in the two first side walls 38 and/or the two second side walls 40 of each shroud unit 42, and at least a portion of the venturi burner 18 is mounted within the mounting holes 34 of each shroud unit 42. That is, although in the illustrated embodiment the shroud 12 is provided with mounting holes 34 on only two opposing first side walls 38, the venturi burner 18 is mounted on only two first side walls 38 to achieve sparging. In other embodiments, the venturi burner 18 may be mounted on only two second side walls 40, or on both the first side walls 38 and the second side walls 40. Of course, it is also possible to mount only a part of the shroud unit 42 and not mount the venturi burner 18 on the part of the shroud unit 42.

In a shroud unit 42, at least a portion of the venturi burners 18 are vertically aligned in a plurality of spaced apart transverse rows. Meanwhile, on one of the hood units 42, a horizontal row of venturi burners 18 may be installed, or a plurality of spaced horizontal rows of venturi burners 18 may be installed, the plurality of horizontal rows of venturi burners 18 being arranged in the vertical direction. Of course, the venturi burners 18 may be arranged in vertical rows. To achieve flame stability, the opposed venturi burners 18 are preferably symmetrically positioned.

The air supply line 32 has the same structure on both sides of the hood member 30, and one side will now be described as an example. The gas supply line 32 includes a gas supply line 46 and a distribution pipe 48, the gas supply line 46 communicating with one output of the gas treatment unit 14 for receiving the gas to be combusted. The distribution pipes 48 have a plurality of branches, and each distribution pipe 48 communicates with the gas delivery pipe 46 and also communicates with a portion of the venturi burner 18 to distribute the fuel gas to the venturi burner 18. In the illustrated embodiment, the section of the gas line 46 that connects with the distribution line 48 is vertically disposed, and a plurality of distribution lines 48 are horizontally aligned, each distribution line 48 supplying a transverse row of venturi burners 18. For uniform distribution, the air delivery tube 46 is positioned in the middle of the distribution tube 48. Further, the ends of the distribution pipes 48 are interconnected by a communication pipe 50 so that the fuel gas can be redistributed among the plurality of distribution pipes 48.

The air supply line 32 on the other side of the shield member 30 is identical. The gas delivery pipes 46 of the gas delivery pipes 32 on both sides are communicated with the same output of the gas processing unit 14. That is, the air supply to the opposed venturi burners 18 on both sides is turned on or off simultaneously.

The remaining burner assemblies have a similar construction. In the present embodiment, there are four burner assemblies from bottom to top, each having four shield units 42, six shield units 42. One or more burner assemblies may be selectively activated for combustion depending on the amount of fuel gas to be treated. It should be appreciated that the number of shroud units 42 per burner assembly described above may be other values depending on different design requirements.

The four burner assemblies are stacked in a vertical direction, wherein adjacent burner assemblies are fixed to each other, and each burner assembly is fixed to the outer frame 16, thereby fixing the entire combustion system.

Fig. 7-13 illustrate another embodiment of an induction burner 210. In this embodiment, the four sidewalls of the shroud 212 are each fitted with a venturi burner 218. The installation, alignment, inclination, etc. of the venturi burner 218 are the same as those of the first embodiment, and will not be described again.

In this embodiment, the combustion system also includes a plurality of individually mountable burner assemblies. In the embodiment of fig. 7-8, the combustion system includes two burner assemblies stacked in a vertical direction. Each burner assembly includes a shroud component, a number of venturi burners 218, and an air supply line. The lowermost one of the burner assemblies 228 will be described by way of example.

The burner assembly 228 includes a shroud component 230, a plurality of venturi burners 218, and a gas supply line 232. The wall portion 226 of the shield member 230 is provided with a plurality of mounting holes 234. The venturi burners 218 are secured within the mounting holes 234 such that the inlet portion 222 and the head portion 224 of each venturi burner 218 are positioned on either side of the wall portion 226 of the shroud member 230. The gas supply line 232 communicates with the gas processing unit 214 and the plurality of venturi burners 218, respectively, to supply the plurality of venturi burners 218 with gas.

In this embodiment, the shroud component 230 is a rectangular frame 236, and the four side walls of the rectangular frame 236 are each provided with a plurality of mounting holes 234, and the venturi burner 218 is mounted in these mounting holes 234. The venturi burners 218 are vertically arranged in a plurality of spaced apart rows, and the air supply line 232 also includes a distribution tube 248 in communication with each row of venturi burners 218, each distribution tube 248 supplying air to the corresponding row of venturi burners 218.

In the illustrated embodiment, the mounting holes 234 on the four side walls are elongated mounting holes 234 extending in a horizontal direction, and a plurality of venturi burners 218 are mounted in the same elongated mounting hole 234, with the elongated mounting holes 234 being spaced apart in a vertical direction. The plurality of venturi burners 218 mounted in the same elongated mounting hole 234 are previously fixed together to form a burner group so as to be integrally mounted in the mounting hole, thus further simplifying the assembly process of the injection type combustion device. It should be understood that the present embodiment may also be provided with the mounting holes for mounting the single venturi burner used in the previous embodiments. Conversely, the mounting holes in the foregoing embodiments may be replaced with the elongated mounting holes 234 of the present embodiment.

The rectangular frame 236 in this embodiment may be welded from four flat plates 252. The upper and lower edges of the rectangular frame 236 may be provided with flanges 244 to be fixed to each other or to be fixed together by welding after being stacked.

In another embodiment, not shown, the cover member may comprise a rectangular flat plate, and each side wall of the cover may be formed by, for example, splicing two flat plates, so that there are eight flat plates in total, i.e., eight cover members. The four edges of the flat plate may have vertically extending flanges for connection with flanges of a flat plate of another adjacent burner assembly. The flat plate is provided with a plurality of mounting holes for mounting the Venturi burner. Similar to the above embodiments, the venturi burners may also be arranged in several spaced transverse rows in the vertical direction. That is, the eight shield members are welded or flanged in the circumferential and vertical directions to form a rectangular shield.

The application further provides a protective cover of the injection type combustion device. Only the construction of the shield will be described below, with reference to the previous description, with respect to the remaining elements such as the venturi burner and the air supply line and their connection location to the shield.

The flame chamber that forms to be used for encircleing the flame in the protection casing, the protection casing has the lateral wall, lateral wall circumference closure forms the barrel that has upper and lower opening, the lateral wall runs through and is equipped with a plurality of being used for installing venturi burner's mounting hole, the mounting hole sets up, works as venturi is installed when the mounting hole, the head that venturi is used for producing flame is located in the flame chamber, and venturi is used for ejecting air's inlet portion is located the protection casing outside. The protective cover comprises a plurality of independent protective cover parts which are spliced together, and a plurality of mounting holes are formed in the wall portion of the protective cover parts.

In the embodiment of fig. 11-12, four shield members 30 are stacked in a vertical direction, each shield member 30 comprising a rectangular frame 36, the rectangular frame 36 comprising two opposing first side walls 38 and two opposing second side walls 40, the two first side walls 38 and the two second side walls 40 being interconnected to form a rectangle, the two first side walls 38 of all shield members being stacked to form two first side walls 54 of the shield 12, the two second side walls 40 of all shield members being stacked to form two second side walls 56 of the shield 12.

The rectangular frame 36 of each cover member 30 includes one or more vertically adjacent cover units 42. The upper and lower edges of each of the cover units 42 are provided with flanges 44 perpendicular to the first and second sidewalls 38 and 40, and adjacent cover units 42 are fixed to each other by the flanges 44. At least a portion of the mounting holes 34 are formed in the two first side walls 38 and/or the two second side walls 40 of each shield unit 42.

Each shroud assembly 30 is provided with a securing member 58 secured to the outer frame 16 of the injection burner 10. In the embodiment of fig. 12, the frame 16 has a mounting bracket 60 protruding therefrom, and the securing member 58 of the cover member 30 extends from the flange 44 thereof, the securing member 58 being secured to the mounting bracket 60 by bolts or welding. In the illustrated embodiment, the fixing members 58 are disposed at four corner positions of the uppermost edge of the cover unit 42, that is, at four corner positions of the uppermost cover unit 42. It should be understood that this manner of fixation is by way of example only and should not be construed as limiting.

In the embodiment of fig. 13, two shroud members 230 are stacked in a vertical direction, each shroud member 230 is a rectangular frame 236, and four side walls of the rectangular frame 236 are each provided with a plurality of mounting holes 234 for mounting the venturi burner 218. In the illustrated embodiment, the mounting holes 234 on the four side walls are elongated mounting holes 234 extending in a horizontal direction, and a plurality of venturi burners 218 are mounted in the same elongated mounting hole 234, with the elongated mounting holes 234 being spaced apart in a vertical direction. Several venturi burners 218 to be installed in the same elongated mounting hole 234 may be previously secured together to form a burner group, thus further simplifying the assembly process of the injection type burner. It should be appreciated that these mounting holes 234 may also be circular holes as shown in the previous embodiments for mounting a single venturi burner.

The rectangular frame 236 in this embodiment may be welded from four flat plates 252. The upper and lower edges of the rectangular frame 236 may be provided with flanges 244 to be fixed to each other or to be fixed together by welding after being stacked.

In another embodiment, not shown, the cover member may comprise a rectangular flat plate, and each side wall of the cover may be formed by, for example, splicing two flat plates, so that there are eight flat plates in total, i.e., eight cover members. The four edges of the flat plate may have vertically extending flanges for connection with flanges of a flat plate of another adjacent burner assembly. The flat plate is provided with a plurality of mounting holes for mounting the Venturi burner. Similar to the above embodiment, the mounting holes may be arranged in several spaced transverse rows (one elongated mounting hole is one row) in the vertical direction. That is, the eight shield members are welded or flanged in the circumferential and vertical directions to form a rectangular shield.

It should be understood that the number of the shield members 230 is merely illustrative, and the number is not limited to four or two, and the shield members 230 may be arranged in other numbers according to the shape of the shield 212 and the actual construction design, and it should be understood that the number of the mounting holes 234 included in each shield member 230 may be reasonably adjusted according to the design requirement, which is not limited by the present application. The arrangement of the mounting holes 234 may be adjusted according to the actual situation.

The application also provides an assembly method of the injection type combustion device. The assembly method comprises the following steps:

a plurality of burner assemblies (28,228) are placed within the housing (16, 216) and a plurality of burner assemblies (28,228) are secured to one another. As previously described, each burner assembly (28,228) includes a shroud component (30, 230), a plurality of venturi burners (18, 218) supported on the shroud component (30, 230), and an air supply line (32,232) in communication with the plurality of venturi burners (18, 218), the shroud component (30, 230), the venturi burners (18, 218), and the air supply line (32,232) of each burner assembly (28,228) having been installed together prior to placement within the housing (16, 216), the shroud components (30, 230) of the plurality of burner assemblies (28,228) collectively forming the shroud (12, 212) of the jet burner apparatus (10, 210) after the plurality of burner assemblies (28,228) are secured to one another.

The method of assembly also includes securing the shield member (30, 230) of each burner assembly (28,228) to the outer frame (16, 216).

The burner assemblies (28,228) can be placed within the housing (16, 216) and secured to each other, and then the protective cover (12, 212) of each burner assembly (28,228) secured to the housing (16, 216). One burner assembly (28,228) may also be placed, the protective cover (12, 212) of the burner assembly (28,228) is secured to the outer frame (16, 216) first, and then the next burner assembly (28,228) is placed. That is, the order of the above-described assembly steps is not limited.

As previously described, each venturi burner (18, 218) includes an air intake portion (22, 222) that injects air and a flame producing head portion (24, 224), and each venturi burner (18, 218) passes through a wall portion (26, 226) of a corresponding shroud component (30, 230) such that the air intake portion (22, 222) and the head portion (24, 224) of each venturi burner (18, 218) are located on either side of the wall portion (26, 226) of the shroud component (30, 230), respectively.

As shown in fig. 5, the shroud assembly 30 of each burner assembly 28 includes a rectangular frame 36, each rectangular frame 36 including two opposing first side walls 38 and two opposing second side walls 40, the two first side walls 38 and the two second side walls 40 being interconnected to form a rectangle. The assembly method includes stacking a number of burner assemblies 28 in a vertical direction such that the shroud components 30 of the number of burner assemblies 28 are stacked together to form the shroud 12 in a rectangular shape.

As previously described, the rectangular frame 36 of each cover member 30 includes one or more vertically adjacent cover units 42. The upper and lower edges of each of the cover units 42 are provided with flanges 44 perpendicular to the first and second sidewalls 38 and 40, and adjacent cover units 42 are fastened to each other by the flanges 44. The fixing mode can be bolts or welding.

In another embodiment, as shown in fig. 7-9, the induction burner 210 includes two burner assemblies 228 stacked in a vertical direction. Each shroud assembly 230 is a rectangular frame 236, with the venturi burner 218 mounted to four side walls of the rectangular frame 236. Two shield members 230 are stacked to form the complete shield 212.

The rectangular frame 236 in this embodiment may be welded from four flat plates 252. The upper and lower edges of the rectangular frame 236 may be provided with flanges 244 to be fixed to each other or to be fixed together by welding after being stacked.

In a not shown embodiment, the shield member of each burner assembly comprises a plate, and the step of securing the burner assemblies to each other comprises securing the plates of the partial burner assemblies together in a vertical direction and the plates of the partial burner assemblies together in a circumferential direction around the vertical direction such that the plates of the burner assemblies are connected to each other to form the shield. The edges of each panel have vertically extending flanges and the method of assembly includes interconnecting the panels with the flanges.

In some embodiments, the air supply lines are secured to the outer frame with tube clamps. The specific structure of the air supply pipeline is referred to the previous embodiments, and will not be described herein.

In the above embodiments, the present application attempts to reduce noise by reducing the size and power of a single venturi, increasing the number of venturi burners. Because the mounting holes are arranged on the side wall or the wall cylinder of the protective cover, or the venturi burners penetrate through the side wall of the protective cover, the venturi burners can be arranged in a larger height range of the protective cover, so that the more dense and more numerous venturi burner mounting modes can be obtained. Rather than the prior art venturi being mounted substantially vertically (somewhat inclined), some embodiments of the present application mount the venturi horizontally with a slight upward inclination, a significantly increased number of venturi burners may be achieved. In some embodiments, the number of mounting holes or venturi burners is greater than 500. In other embodiments, the number of mounting holes or venturi burners is greater than 1000. The above embodiments have been described by way of example in terms of a segmented or segmented shroud, it being understood that the present application provides for the passage of a burner through the side wall of the shroud as well as the application of a unitary shroud.

In summary, the application provides an injection type combustion device, a burner assembly, a protective cover and an assembly method thereof. According to the application, the protective cover is provided with a plurality of mounting holes, the venturi combustors penetrate through the mounting holes, the head part for generating flame is positioned in the flame cavity of the protective cover, and the air inlet part for injecting air is positioned outside the protective cover. By the design, air can be injected in a larger range, and on one hand, the number of the burners can be remarkably increased, so that the air injection quantity of each burner is not insufficient. On the other hand, at the periphery of the protective cover, due to the injection effect of the venturi burner, a part of peripheral air is injected into the venturi burner to be involved in combustion, and a large amount of peripheral cold air can be caused to move to the protective cover to dissipate heat of the protective cover. In the above-described embodiments of the present application, the number of venturi burners is significantly increased, and the size and power of a single venturi burner can be significantly reduced for treating the same amount of fuel gas, thereby significantly reducing noise and flame height.

The concepts described herein may be embodied in other forms without departing from the spirit or characteristics thereof. The particular embodiments disclosed are illustrative and not restrictive. The scope of the application is, therefore, indicated by the appended claims rather than by the foregoing description. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (9)

1. A burner assembly for an injection burner apparatus, the burner assembly comprising:

the protective cover part is a part of a protective cover of the injection type combustion device, an outer frame is fixedly connected to the outer side of the protective cover, the outer frame is a skid-mounted outer frame, a plurality of mounting holes are formed in the wall portion of the protective cover part, the protective cover part comprises a rectangular frame, the rectangular frame comprises two opposite first side walls and two opposite second side walls, the two first side walls and the two second side walls are connected with each other to form a rectangle, and the rectangular frame of the protective cover part comprises a plurality of vertically adjacent protective cover units;

the venturi combustors comprise air inlet parts for injecting air and head parts for generating flame, and the venturi combustors are fixed in the mounting holes, so that the air inlet parts and the head parts of the venturi combustors are respectively positioned at two sides of the wall parts of the protective cover part; and

and the air supply pipeline is communicated with the venturi combustors to supply fuel gas for the venturi combustors.

2. The burner assembly of the injection burner apparatus of claim 1 wherein: the upper and lower edges of each shield unit are provided with flanges perpendicular to the first and second side walls, and adjacent shield units are mutually fixed together by using the flanges.

3. The burner assembly of the injection burner apparatus of claim 1 wherein: at least part of the mounting holes are formed in the two first side walls and/or the two second side walls of each protective cover unit, and at least part of the venturi combustors are mounted in the mounting holes of each protective cover unit.

4. The burner assembly of the injection burner apparatus of claim 1 wherein: the shield assembly includes a plate having a vertically extending flange at an edge thereof for connection with a flange of another adjacent plate of the burner assembly.

5. The burner assembly of the injection burner apparatus of claim 1 wherein: all four side walls of the rectangular frame are provided with mounting holes, and at least part of the venturi burner is mounted in the mounting holes of all four side walls.

6. The burner assembly of the injection burner apparatus of claim 5, wherein: the mounting holes on the four side walls are elongated mounting holes extending in the horizontal direction, a plurality of venturi burners are mounted in the same elongated mounting hole, and a plurality of elongated mounting holes are spaced apart in the vertical direction.

7. The burner assembly of the injection burner apparatus of claim 6 wherein: a plurality of venturi burners installed in the same strip-shaped mounting hole are connected with each other to form a burner group, and are integrally installed in the strip-shaped mounting hole.

8. The burner assembly of the injection burner apparatus of claim 1 wherein: at least part of the venturi burners are arranged in a plurality of transverse rows in the vertical direction.

9. The burner assembly of the injection burner apparatus of claim 1 wherein: the gas supply pipeline comprises a gas supply pipe and distribution pipes, the gas supply pipe is used for being communicated with one path of output of a gas treatment unit and used for receiving gas to be combusted, the distribution pipes are provided with a plurality of distribution pipes, each distribution pipe is communicated with the gas supply pipe and simultaneously communicated with a part of venturi burners so as to distribute the gas to the part of venturi burners, the venturi burners are arranged into a plurality of transverse rows in the vertical direction, one section of the gas supply pipe connected with the distribution pipe is vertically arranged, a plurality of distribution pipes are horizontally arranged, each distribution pipe supplies gas for the venturi burner with one transverse row, the section of the gas supply pipe connected with the distribution pipe is located in the middle of the distribution pipe, and the tail ends of the distribution pipes are mutually communicated by using the communication pipe.