CN210128342U - Gas air distributor and combustor - Google Patents
Gas air distributor and combustor Download PDFInfo
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- CN210128342U CN210128342U CN201920953180.3U CN201920953180U CN210128342U CN 210128342 U CN210128342 U CN 210128342U CN 201920953180 U CN201920953180 U CN 201920953180U CN 210128342 U CN210128342 U CN 210128342U
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- 239000007921 spray Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 abstract description 7
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 71
- 238000001514 detection method Methods 0.000 description 5
- 239000002737 fuel gas Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The utility model discloses a combustion apparatus field specifically discloses a gas air register and combustor, wherein gas air register is including the distribution dryer, the gas pipe and the shower nozzle that are equipped with the air intake, the one end of gas pipe stretches into be connected with the shower nozzle in the distribution dryer, be equipped with a plurality of orifices on the shower nozzle, every the central axis of orifice is along air current direction to the distance crescent of shower nozzle the central axis, and every the central axis of orifice with through this orifice center form the contained angle between the central axial cross-section of shower nozzle, the contained angle is greater than 0 and is less than 90, the center of orifice is the mid point of the central axis of this orifice. The utility model discloses well gas is delivered to the shower nozzle and is through the orifice blowout through the gas pipe, and the air gets into through the air intake and joins in marriage in the dryer and flow to the shower nozzle, and the gas passes through the orifice and to the shower nozzle blowout all around, and the spun gas can promote to join in marriage the air current rotation in the dryer, makes the more even of gas distribution, is favorable to the mixture of air and gas.
Description
Technical Field
The utility model relates to a combustion apparatus field especially relates to a gas air distributor and combustor.
Background
The burner is a device for ejecting fuel and air in a certain mode to be mixed and combusted, and for a gas air distributor taking gas as fuel, the gas air distributor is one of the important parts in the burner, and the gas air distributor mainly mixes the gas and the air and then ignites the mixture.
The existing gas air distributor is not easy to ignite due to insufficient mixing of air and gas and has the problem of easy fire release.
Therefore, a gas air distributor is urgently needed to solve the problem that the existing gas air distributor cannot sufficiently mix air and gas.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas air register and combustor can make more abundant that air and gas mix.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a gas air distributor, is including the air distribution cylinder, gas pipe and the shower nozzle that are equipped with the air intake, the one end of gas pipe stretches into in the air distribution cylinder and be connected with the shower nozzle, be equipped with a plurality of orifices on the shower nozzle, every the central axis of orifice arrives along the air current direction the distance of shower nozzle the central axis increases gradually, and every the central axis of orifice with pass through at orifice center form the contained angle between the central axial cross-section of shower nozzle, the contained angle is greater than 0 and is less than 90, the center of orifice is the mid point of the central axis of this orifice.
As a preferred technical scheme of the gas air distributor, the included angle is 40-60 degrees.
As a preferred technical scheme of the gas air distributor, a central hole is formed in the nozzle and comprises a first hole, a tapered hole and a second hole which are sequentially arranged along the airflow direction, and the aperture of the first hole is larger than that of the second hole.
As a preferable technical solution of the gas air distributor, a distance from the outer wall of the nozzle corresponding to the tapered hole to the central axis thereof is gradually reduced along the gas flow direction, and the nozzle hole extends from the inner wall of the tapered hole to the outer wall of the nozzle corresponding to the tapered hole through the nozzle.
As a preferred technical scheme of the gas air distributor, the tapered hole is a conical hole, and an included angle between a generatrix of the conical hole and a central axis of the conical hole is 40-50 degrees and is equal to an included angle between an axial extension direction of an outer wall of the nozzle and a central axis of the nozzle;
or the tapered holes are trapezoidal holes, each inner wall of each trapezoidal hole is arranged in parallel with the corresponding outer wall of each trapezoidal hole, and the included angle between each inner wall of each trapezoidal hole and the central axis of each trapezoidal hole is 40-50 degrees.
As a preferred technical solution of the above gas air distributor, the gas air distributor further comprises a premixing barrel disposed in the air distribution barrel, the premixing barrel is located at the downstream of the air inlet, and the nozzle is disposed in the premixing barrel.
As a preferable technical scheme of the gas air distributor, a gap is formed between the downstream end surface of the premixing barrel and the downstream end surface of the air distribution barrel.
As a preferred technical solution of the above gas air distributor, the gas pipe is rotatably provided with a plurality of swirl vanes distributed along the circumferential direction of the gas pipe, and the swirl vanes are located between the air inlet and the nozzle.
As a preferable technical scheme of the gas air distributor, the swirl vanes are arranged outside the premixing barrel.
The utility model also provides a combustor, including foretell gas air distributor.
The utility model has the advantages that: the utility model provides an among the gas air distributor, the central axis of every orifice is greater than 0 and is less than 90 with the contained angle that forms between the central axial cross-section through the shower nozzle at this orifice center, the center of orifice is the central axis's of this orifice midpoint, the central axis of every orifice increases along the distance of air current direction to shower nozzle the central axis gradually, the gas is delivered to the shower nozzle and is spout through the orifice through the gas pipe, and the air gets into through the air intake and joins in marriage in the dryer and flow to the shower nozzle, the gas is through the orifice to the shower nozzle blowout all around, the air current that the spun gas can promote in joining in marriage the dryer is rotatory, make the gas distribute more even, be favorable to the mixture of air and gas.
The utility model also provides a combustor can make the gas distribute more even, makes gas and air intensive mixing, is favorable to igniteing, and the burning is more abundant moreover.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural view of a gas air distributor provided in an embodiment of the present invention;
fig. 2 is a front view of a showerhead provided in accordance with an embodiment of the present invention;
fig. 3 is an axial cross-sectional view of a sprinkler head according to an embodiment of the present invention.
In the figure:
1. an air distribution cylinder; 11. an air inlet; 12. a fully mixed combustion zone; 2. a swirl vane; 3. a spray head; 31. spraying a hole; 32. a first hole; 33. a tapered bore; 34. a second hole; 4. a premix barrel; 41. a premixed combustion zone; 5. an ignition gun conduit; 6. a fire detection conduit; 7. a gas pipe.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.
Example one
Fig. 1 is a schematic structural diagram of the gas air distributor provided in this embodiment, and as shown in fig. 1, the gas air distributor provided in this embodiment includes an air distribution cylinder 1, a fire detection duct 6 and an ignition gun duct 5, wherein one end of the fire detection duct 6 extends into the air distribution cylinder 1, the other end is disposed outside the air distribution cylinder 1, and the combustion condition of the gas in the air distribution cylinder 1 can be observed through the end of the fire detection duct 6 disposed outside the air distribution cylinder 1, such as whether ignition is successful or not. One end of the ignition gun guide pipe 5 extends into the air distribution cylinder 1, the other end of the ignition gun guide pipe is arranged outside the air distribution cylinder 1, the ignition gun guide pipe 5 is arranged in one end of the air distribution cylinder 1 and is provided with an ignition gun, a wire of the ignition gun is led out of the air distribution cylinder 1 through the ignition gun guide pipe 5 and is connected to a control switch of the ignition gun, and ignition of the ignition gun is controlled through the control switch. The structure of the ignition gun and how to control the ignition of the ignition gun through the control switch are common knowledge in the field, and are not described in detail herein.
Fig. 2 is a schematic structural diagram of the nozzle provided in this embodiment, as shown in fig. 1 and fig. 2, the gas air distributor further includes a gas pipe 7 and a nozzle 3, an air inlet 11 is provided on the air distribution cylinder 1, one end of the gas pipe 7 extends into the air distribution cylinder 1 and is connected to the nozzle 3, preferably, the nozzle 3 is provided downstream of the air inlet 11, the nozzle 3 is provided with a plurality of nozzle holes 31 distributed along the circumferential direction of the nozzle 3, the distance from the central axis of each nozzle hole 31 to the central axis of the nozzle 3 along the air flow direction gradually increases, an included angle α is formed between the central axis of each nozzle hole 31 and the central axial section of the nozzle 3 passing through the center of the nozzle hole 31, the included angle α has a value in the range of 0 ° < α < 90 °, wherein the center of each nozzle hole 31 is the midpoint of the central axis of the nozzle hole 31, preferably, the included angle α is 40 ° -60 °, the plurality of nozzle holes 31 are distributed in an array along the circumferential direction of the nozzle 3, the diameter d2 of each nozzle hole 31.
The gas is delivered to the nozzle 3 through the gas pipe 7 and is sprayed out through the spray holes 31, the air enters the air distribution cylinder 1 through the air inlet 11 and flows towards the nozzle 3, and the gas sprayed out from the nozzle 3 is mixed with the air in the air distribution cylinder 1 and is ignited by the ignition gun. And set up the orifice 31 that distributes according to above-mentioned mode, the gas is through shower nozzle 3 to spouting all around, and the gas of spun can promote to join in marriage the air current rotation in the dryer 1, makes the more even of gas distribution, is favorable to the mixture of air and gas, and the burning is more abundant moreover.
Fig. 3 is an axial cross-sectional view of the nozzle head provided in this embodiment, as shown in fig. 3, a central hole is provided in the nozzle head 3, the central hole includes a first hole 32, a tapered hole 33 and a second hole 34 which are sequentially arranged along the airflow direction, the diameter of the first hole 32 is larger than that of the second hole 34, and the distance from the inner wall of the tapered hole 33 to the central axis thereof gradually decreases along the airflow direction. By providing the center hole with the above-described structure, the gas discharged from the second hole 34 has a certain jet intensity. Wherein the diameter d1 of the second hole 34 is determined according to the required gas quantity, the diameter of the large diameter end of the tapered hole 33 is equal to the diameter of the first hole 32, and the diameter of the small diameter end of the tapered hole 33 is larger than the diameter of the second hole 34.
In this embodiment, tapering hole 33 is the bell mouth, and orifice 31 runs through shower nozzle 3 by the bell mouth inner wall and extends to 3 outer walls of shower nozzle that correspond with the bell mouth, makes the gas spray to all around through above-mentioned setting to the more even of distribution does benefit to the mixture of air and gas. Preferably, the angle between the generatrix of the tapered bore 33 and its central axis is between 40 ° and 50 ° and equal to the angle between the axial extension of the outer wall of the nozzle 3 and its central axis.
Further, as shown in fig. 1, a premixing barrel 4 is arranged in the air distribution barrel 1, and the premixing barrel 4 is located at the downstream of the air inlet 11; and a space is arranged between the downstream end surface of the premixing barrel 4 and the downstream end surface of the air distribution barrel 1. Preferably, the nozzle 3 is arranged in the premixing barrel 4, a premixing combustion area 41 is formed in the premixing barrel 4, a fully mixed combustion area 12 is formed in the area in the air distribution barrel 1 at the downstream of the premixing barrel 4, part of air enters the premixing barrel 4 through the rotation of the swirl vanes 2, and is fully mixed with the fuel gas in the premixing combustion area 41; meanwhile, partial air enters the fully-mixed combustion area 12 through a gap between the air distribution cylinder 1 and the pre-mixing cylinder 4, direct-current air inlet is achieved, step-by-step air inlet is achieved in a mode of combining rotational-flow air inlet and direct-current air inlet, the mixing effect of gas and air is enhanced, excessive air and gas in the pre-mixing combustion area 41 are prevented from being mixed and flame is blown out, ignition is facilitated, the stability of flame is greatly improved, and the problem that the ignition stability of an existing gas air distribution device is poor is solved.
The gas pipe 7 is provided with a plurality of swirl blades 2 distributed along the circumferential direction of the gas pipe 7 in a rotating manner, and the swirl blades 2 are positioned between the air inlet 11 and the spray head 3. Preferably, the swirl vanes 2 are provided outside the premix barrel 4. When the air passes through the swirl blades 2, the swirl blades 2 can rotate relative to the gas pipe 7 under the reverse acting force of wind power, so that the air around the swirl blades 2 also rotates along with the swirl blades, the air at the upstream of the premixing barrel 4 flows rapidly, the air and the gas in the premixing barrel 4 are fully mixed, and the ignition and ignition stability of the gas are facilitated.
In this implementation, the ignition gun guide pipe 5 and the fire detection guide pipe 6 also have a guiding function in the gas air distributor, but are not used as a pressure-bearing part, so that a pipe with a thinner wall thickness can be selected. The air distribution cylinder 1 and the fuel gas pipe 7 are also used as pressure-bearing parts, wherein the air distribution cylinder 1 needs to bear primary air pressure, and the fuel gas pipe 7 needs to bear fuel gas pressure, so that the air distribution cylinder 1 and the fuel gas pipe 7 need to adopt pipes meeting the pressure-bearing requirement of wall thickness.
The embodiment also provides a combustor, which comprises the gas air distributor. The combustor in this embodiment mainly refers to, but is not limited to, a pulverized coal combustor that uses gas and pulverized coal as fuel at the same time, where the gas may be natural gas or biomass gas.
Example two
The difference between this embodiment and the first embodiment is that the tapered hole 33 has a different shape, in this embodiment, the tapered hole 33 is a trapezoidal hole, each inner wall of the trapezoidal hole is parallel to its corresponding outer wall, preferably, the included angle between each inner wall of the trapezoidal hole and its central axis is β, the included angle β is in the range of 40 ° -50 °, and accordingly, the included angle between the two inner walls of the trapezoidal hole is 2 β.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (10)
1. The gas air distributor comprises an air distribution barrel (1) provided with an air inlet (11), a gas pipe (7) and a nozzle (3), wherein one end of the gas pipe (7) extends into the air distribution barrel (1) and is connected with the nozzle (3), the gas air distributor is characterized in that a plurality of spray holes (31) are formed in the nozzle (3), the distance from the central axis of each spray hole (31) to the central axis of the nozzle (3) along the airflow direction is gradually increased, an included angle is formed between the central axis of each spray hole (31) and the central axial section of the nozzle (3) passing through the center of the corresponding spray hole (31), the included angle is larger than 0 degree and smaller than 90 degrees, and the center of each spray hole (31) is the midpoint of the central axis of the corresponding spray hole (31).
2. The gas register of claim 1, wherein the included angle is 40 ° -60 °.
3. The gas air distributor according to claim 1, characterized in that a central hole is arranged in the nozzle (3), the central hole comprises a first hole (32), a tapered hole (33) and a second hole (34) which are arranged in sequence along the gas flow direction, and the diameter of the first hole (32) is larger than that of the second hole (34).
4. The gas register according to claim 3, characterized in that the distance from the outer wall of the nozzle head (3) corresponding to the tapered bore (33) to its central axis is gradually reduced in the gas flow direction, and the nozzle holes (31) extend from the inner wall of the tapered bore (33) through the nozzle head (3) to the outer wall of the nozzle head (3) corresponding to the tapered bore (33).
5. The gas air distributor according to claim 4, characterized in that the tapered hole (33) is a conical hole, the included angle between the generatrix of the conical hole and the central axis thereof is 40-50 ° and equal to the included angle between the axial extension direction of the outer wall of the nozzle (3) and the central axis thereof;
or the tapered holes (33) are trapezoidal holes, each inner wall of each trapezoidal hole is arranged in parallel with the corresponding outer wall of each trapezoidal hole, and the included angle between each inner wall of each trapezoidal hole and the central axis of each trapezoidal hole is 40-50 degrees.
6. The gas air distributor according to claim 1, further comprising a premixing barrel (4) arranged in the air distribution barrel (1), wherein the premixing barrel (4) is located downstream of the air inlet (11), and the nozzle (3) is arranged in the premixing barrel (4).
7. The gas air distributor according to claim 6, wherein a distance is provided between the downstream end surface of the premixing cylinder (4) and the downstream end surface of the air distribution cylinder (1).
8. The gas air distributor according to claim 6, wherein the gas pipe (7) is rotatably provided with a plurality of swirl vanes (2) distributed along the circumferential direction of the gas pipe (7), and the swirl vanes (2) are positioned between the air inlet (11) and the nozzle (3).
9. Gas air distributor according to claim 8, characterized in that the swirl vanes (2) are arranged outside the premix barrel (4).
10. A burner comprising a gas register as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920953180.3U CN210128342U (en) | 2019-06-24 | 2019-06-24 | Gas air distributor and combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920953180.3U CN210128342U (en) | 2019-06-24 | 2019-06-24 | Gas air distributor and combustor |
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| Publication Number | Publication Date |
|---|---|
| CN210128342U true CN210128342U (en) | 2020-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920953180.3U Active CN210128342U (en) | 2019-06-24 | 2019-06-24 | Gas air distributor and combustor |
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| Country | Link |
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| CN (1) | CN210128342U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173687A (en) * | 2019-06-24 | 2019-08-27 | 烟台龙源电力技术股份有限公司 | A kind of combustion gas air register and burner |
| CN112023834A (en) * | 2020-11-03 | 2020-12-04 | 小跃科技(北京)有限公司 | High-temperature carbon dioxide collecting furnace |
-
2019
- 2019-06-24 CN CN201920953180.3U patent/CN210128342U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173687A (en) * | 2019-06-24 | 2019-08-27 | 烟台龙源电力技术股份有限公司 | A kind of combustion gas air register and burner |
| CN112023834A (en) * | 2020-11-03 | 2020-12-04 | 小跃科技(北京)有限公司 | High-temperature carbon dioxide collecting furnace |
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