Combustion machine head for combustor

Abstract

The utility model relates to the technical field of combustors, and discloses a combustion machine head for a combustor, a plurality of groups of air injection mechanisms are arranged on the outer surface of a combustion machine head body in the length direction of the combustion machine head body, and each air injection mechanism comprises a plurality of groups of radial air injection assemblies arranged on the combustion machine head body in the circumferential direction. A tangential gas injection assembly is arranged between every two adjacent radial gas injection assemblies, the radial gas injection assemblies are used for injecting mixed gas in the radial direction of the combustion machine head body, and the tangential gas injection assemblies are used for injecting the mixed gas along the outer surface of the combustion machine head body. Mixed gas sprayed out of the radial gas spraying assembly in the radial direction is cut off through mixed gas sprayed out of the tangential gas spraying assembly in the tangential direction, the spraying height of the mixed gas can be effectively reduced, flames can be evenly distributed on the surface of the combustion machine head body, the flame height is effectively controlled, and therefore the open fire intensity is reduced under the condition that heat is not lost, and the combustion efficiency is improved. And therefore, the overheating damage to the heat exchange spray pipe is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to burner technical field especially, it is a kind of combustion engine for burner. BACKGROUND

[0002] Burner is the heat source of steam generator, its working principle is to introduce air and gas according to certain proportion by proportional valve, then mixed gas is passed into tubular combustion engine, and is discharged by exhaust hole distributed on the surface of combustion engine. Then, by ignition needle ignites the mixed gas discharged, can let flame be evenly distributed on the surface of combustion engine, to realize high-temperature roasting, and produce high-temperature flue gas. The utility model for patent with announcement number CN209782615U discloses is just a similar burner.

[0003] When the combustion engine of burner is inserted into spiral heat exchange coil, start burner, the flame on the surface of combustion engine can heat heat exchange coil, to realize heat exchange. Because mixed gas is directly sprayed by exhaust hole in traditional burner, so the injection height of flame is higher, which easily leads to greater intensity of open fire, and long-time roasting heat exchange coil can easily cause coil damage, so there is room for improvement. UTILITARIAN CONTENT

[0004] The utility model provides a combustion engine for burner in view of the shortcomings of prior art, can effectively reduce the injection height of mixed gas, so that the intensity of open fire of combustion engine is reduced, to reduce the overheating damage to heat exchange coil.

[0005] In order to solve the above technical problem, the utility model is solved by the following technical scheme:

[0006] A kind of combustion engine for burner, including tubular combustion engine body, the outer surface of combustion engine body is arranged with multiple groups of jet mechanism along the length direction of itself, jet mechanism includes multiple groups of radial jet assembly arranged in the circumferential direction of combustion engine body, tangential jet assembly is arranged between adjacent radial jet assembly, radial jet assembly is used to spray mixed gas along the radial direction of combustion engine body, tangential jet assembly is used to spray mixed gas along the outer surface of combustion engine body to cut off the mixed gas sprayed by radial jet assembly, to reduce the injection height of mixed gas.

[0007] By the above scheme, the mixed gas sprayed tangentially by the tangential gas spraying assembly can cut off the mixed gas sprayed radially by the radial gas spraying assembly, so as to effectively reduce the spraying height of the mixed gas, so that the flame can be uniformly distributed on the surface of the combustion head body, and the flame height can be effectively controlled, thereby reducing the open fire intensity without losing heat, and further reducing the overheating damage to the heat exchange nozzle. At the same time, the tangential airflow can blow the surface of the radial gas spraying assembly to reduce the amount of dust adhering, thereby reducing the probability of clogging of the radial gas spraying assembly, thereby avoiding the overheating or tempering phenomenon of the combustion head body, making the use of the burner more efficient and safe, and prolonging the service life.

[0008] Preferably, the radial gas spraying assembly comprises at least one radial exhaust hole arranged on the surface of the combustion head body.

[0009] By the above scheme, the radial exhaust hole can realize radial spraying of the mixed gas and improve the spraying efficiency.

[0010] Preferably, the radial exhaust hole is provided with two radial exhaust holes arranged along the length direction of the combustion head body.

[0011] By the above scheme, the flame formed by the radial exhaust hole spraying is more uniform, thereby improving the use effect of the burner.

[0012] Preferably, the radial exhaust hole is provided with a guide ring outside the radial exhaust hole, the outer side of the guide ring is inclined, and the opening size of the guide ring away from the combustion head body is smaller than the hole diameter of the radial exhaust hole.

[0013] By the above scheme, the outer side of the guide ring has the function of guiding airflow, which can change a part of the mixed gas tangentially blown on the surface of the radial exhaust hole, so that the mixed gas can more conveniently carry away the dust adhering to the surface of the radial exhaust hole, thereby improving the dust removal effect.

[0014] Preferably, the tangential gas spraying assembly comprises an exhaust port penetrating through the surface of the combustion head body and a guide plate covering the outside of the exhaust port, the guide plate and the exhaust port maintain a tangential gas spraying interval for spraying the mixed gas along the tangential direction of the combustion head body, and the two ends of the guide plate in the length direction of the combustion head body are respectively connected to the two ends of the exhaust port through the flow baffles.

[0015] By the above scheme, the mixed gas can be tangentially sprayed through the tangential gas spraying interval, which can not only cut off the mixed gas sprayed radially by the radial exhaust hole, but also blow and clean the radial exhaust hole, thereby improving the performance of the tangential gas spraying assembly.

[0016] Preferably, the height of the tangential gas spraying interval is greater than the height of the guide ring.

[0017] Adopting the above scheme, the tangential gas flow of the tangential jet interval injection is not blocked by the guide ring, so that the tangential jet interval injection can continue to perform the function of cutting off the radial jet flow.

[0018] Preferably, the combustion head body is in a cylindrical shape.

[0019] Adopting the above scheme, the cylindrical combustion head body can make the fire outlet surface of the burner more uniform, thereby effectively improving the heating effect of the burner.

[0020] The utility model discloses a combustion head body and a burner, which have the advantages that: the tangential jet assembly cuts off the radial jet flow of the radial jet assembly, effectively reduces the jet height of the mixed gas, makes the flame evenly distributed on the surface of the combustion head body, effectively controls the flame height, reduces the intensity of the open fire without losing heat, thereby reducing the overheating damage to the heat exchange nozzle, the tangential gas flow can blow the surface of the radial jet assembly to reduce the amount of dust adhesion, thereby reducing the plugging probability of the radial jet assembly, avoiding the overheating or tempering phenomenon of the combustion head body, making the use of the burner more efficient and safe, and prolonging the service life. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Structure diagram of the embodiment Figure 1 ;

[0022] Figure 2 Structure diagram of the embodiment Figure 2 ;

[0023] Figure 3 Structure diagram of the embodiment Figure 3 .

[0024] The parts referred to by the numbers in the above drawings are as follows: 1, combustion head body; 2, jet mechanism; 3, radial jet assembly; 4, tangential jet assembly; 5, radial exhaust hole; 6, guide ring; 7, exhaust port; 8, guide plate; 9, tangential jet interval; 10, flow baffle; 11, burner; 12, proportional valve; 13, fan. DETAILED DESCRIPTION

[0025] The utility model will be described in further detail below in combination with the drawings and embodiments.

[0026] As Figure 1 , Figure 2 and Figure 3As shown, the combustion head for the burner disclosed in the embodiment comprises a tubular combustion head body 1, which is cylindrical in shape and can effectively improve the coverage and uniformity of the flame surface, thereby improving the performance of the burner 11. The outer surface of the combustion head body 1 is arranged with a plurality of groups of jet mechanisms 2 at equal intervals along the length direction of the combustion head body 1. Each group of jet mechanisms 2 comprises a plurality of groups of radial jet assemblies 3 arranged at equal intervals in the circumferential direction of the combustion head body 1, and a tangential jet assembly 4 is arranged between adjacent radial jet assemblies 3. In the embodiment, the radial jet assembly 3 is used to jet the mixed gas along the radial direction of the combustion head body 1, and the tangential jet assembly 4 is used to jet the mixed gas along the outer surface of the combustion head body 1 to cut off the mixed gas jetted by the radial jet assembly 3, thereby reducing the jet height of the mixed gas.

[0027] In order to improve the radial jet performance of the radial jet assembly 3, the radial jet assembly 3 comprises at least one radial exhaust hole 5 arranged on the surface of the combustion head body 1. The radial exhaust hole 5 is arranged at two positions along the length direction of the combustion head body 1.

[0028] In order to improve the dust removal effect of the tangential jet assembly 4, a guide ring 6 is arranged around the outer side of the radial exhaust hole 5. The outer side of the guide ring 6 is inclined and the opening size of the guide ring 6 away from the combustion head body 1 is smaller than the hole diameter of the radial exhaust hole 5.

[0029] In order to ensure the tangential jet performance of the tangential jet assembly 4, the tangential jet assembly 4 comprises an exhaust port 7 penetrating through the surface of the combustion head body 1 and a guide plate 8 covering the outer side of the exhaust port 7. The exhaust port 7 is rectangular and arranged along the length direction of the combustion head body 1, and the guide plate 8 is also rectangular and arranged along the length direction of the exhaust port 7. A tangential jet interval 9 for jetting the mixed gas along the tangential direction of the combustion head body 1 is maintained between the guide plate 8 and the exhaust port 7. The length of the tangential jet interval 9 is greater than the sum of the hole diameters of the two radial exhaust holes 5, so that the tangentially jetted mixed gas can completely cover the two radial jet assemblies 3. The two ends of the guide plate 8 in the length direction of the combustion head body 1 are connected to the two ends of the exhaust port 7 through baffle plates 10 respectively, so that the mixed gas cannot be jetted along the length direction of the combustion head body 1, thereby ensuring the jetting accuracy and efficiency of the tangential jet assembly 4.

[0030] In order to enable the tangentially jetted mixed gas to maintain the function of cutting off the radial jet gas flow, the height of the tangential jet interval 9 is greater than the height of the guide ring 6.

[0031] The specific working principle is as follows:

[0032] The combustion head body 1 of the burner 11 is inserted into the inner cavity of the spiral coil heat exchanger, and then the burner 11 is started to mix the introduced gas and air into mixed gas through a certain proportion by the proportional valve 12, and the mixed gas is introduced into the inner cavity of the combustion head body 1 by the fan 13. The step and working principle belong to the common knowledge in the art, and are not described here. When the mixed gas fills the entire inner cavity of the combustion head body 1, it can be radially sprayed through the radial exhaust hole 5, and simultaneously sprayed tangentially through the tangential gas injection interval 9 on both sides of the flow guide plate 8. In this state, the jet gas is ignited by the ignition needle (not shown) of the burner 11, so that the flame is uniformly distributed on the surface of the combustion head body 1. Since the tangentially injected mixed gas can cut off the airflow generated by the radial mixed gas on both sides, the jet height of the flame will not be too large, thereby effectively controlling the intensity of the open flame, and thereby reducing the overheating damage to the heat exchange coil. At the same time, the tangentially injected mixed gas can sweep the radial exhaust hole 5, thereby effectively removing the dust on the radial exhaust hole 5, thereby avoiding the phenomenon of blockage, overheating and backfire of the combustion head body 1, making the use of the burner 11 more efficient and safe, and prolonging the service life.

Claims

1. A burner head for a burner, comprising a tubular burner head body (1), characterised in that: The outer surface of the combustion head body (1) is arranged with multiple groups of jet mechanisms (2) along the length direction of the combustion head body (1), the jet mechanisms (2) comprise multiple groups of radial jet assemblies (3) arranged in a circumferential direction on the combustion head body (1), and a tangential jet assembly (4) is arranged between adjacent radial jet assemblies (3), the radial jet assembly (3) is used for jetting mixed gas along the radial direction of the combustion head body (1), and the tangential jet assembly (4) is used for jetting mixed gas along the outer surface of the combustion head body (1) to cut off the mixed gas jetted by the radial jet assembly (3), so as to reduce the jet height of the mixed gas.

2. A burner head for a burner as claimed in claim 1, characterized in that: The radial jet assembly (3) comprises at least one radial exhaust hole (5) arranged on the surface of the combustion head body (1).

3. A burner head for a burner as claimed in claim 2, characterised in that: The radial exhaust hole (5) is arranged in two and arranged along the length direction of the combustion head body (1).

4. A burner head for a burner as defined in claim 2, characterized in that: The radial exhaust hole (5) is annularly arranged with a flow guide ring (6) on the outer side, the outer side of the flow guide ring (6) is arranged in an inclined manner, and the opening size of the flow guide ring (6) away from the combustion head body (1) is smaller than the hole diameter of the radial exhaust hole (5).

5. A burner head for a burner as claimed in claim 4, characterised in that: The tangential jet assembly (4) comprises an exhaust port (7) penetrating the surface of the combustion head body (1) and a flow guide plate (8) covering the outer side of the exhaust port (7), a tangential jet interval (9) for jetting mixed gas along the tangential direction of the combustion head body (1) is maintained between the flow guide plate (8) and the exhaust port (7), and the flow guide plate (8) is connected to both ends of the exhaust port (7) through a flow baffle (10) at both ends in the length direction of the combustion head body (1).

6. A burner head for a burner as defined in claim 5, characterized in that: The height of the tangential jet interval (9) is greater than the height of the flow guide ring (6).

7. A burner head for a burner according to any one of claims 1 to 6, characterised in that: The combustion head body (1) is in a cylindrical shape.

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