Combustion head assembly of low-nitrogen waste gas treatment system
By employing a rotating nozzle and impeller structure in the combustion head assembly, the problem of uneven mixing of gas and air was solved, achieving rapid and uniform mixing of gas and air and improving the efficiency of the oxidation reaction.
Patent Information
- Application Number
- CN202422932335.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In existing combustion systems, the mixing of fuel gas and air is not uniform and rapid enough, resulting in limited dispersion of fuel gas and air, which affects the efficiency of the oxidation reaction.
A combustion head assembly for a low-NOx exhaust gas treatment system was designed, employing a rotating nozzle and impeller structure. This allows the combustion gas and air to mix thoroughly within the mixing chamber. The rotating nozzle increases the injection point, and the gas is agitated through a shaped connecting pipe.
It improves the mixing efficiency of gas and air, promotes rapid and uniform contact between gas and air, and enhances the effect of oxidation reaction.
Smart Images
Figure CN223525153U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to low nitrogen waste gas treatment system combustion head subassembly, in particular to a kind of low nitrogen waste gas treatment system combustion head subassembly. BACKGROUND
[0002] In the combustion head of low nitrogen waste gas treatment system work, the oxidation reaction of natural gas needs gas molecule and oxygen molecule in air to contact, that is, natural gas and air are uniformly mixed, and the uniformity of mixing depends on the speed of mutual diffusion of gas and air. In the process of mixing air and gas in the existing combustion system, the gas injection port and the air injection port are relatively stationary, and the position of the gas injection port and the air injection port in the mixing chamber is fixed, so the dispersion capacity of the gas is limited, which is not conducive to the sufficient and rapid mixing of gas and air. SUMMARY
[0003] Therefore, it is necessary to provide a low nitrogen waste gas treatment system combustion head subassembly to solve the problem that the gas injection port and the air injection port are relatively stationary in the process of mixing air and gas in the existing combustion system, and the position of the gas injection port and the air injection port in the mixing chamber is fixed, so the dispersion capacity of the gas is limited, which is not conducive to the sufficient and rapid mixing of gas and air.
[0004] The low nitrogen waste gas treatment system combustion head subassembly provided by the utility model comprises an air injection cavity and a gas injection cavity, the air injection cavity is sleeved on the surface of the gas injection cavity to form a mixing chamber, and further comprises an air injection port, which is in communication with the air injection cavity and located in the mixing chamber; a gas injection head, which comprises a rotating nozzle, the rotating nozzle is rotatably connected to the end of the gas injection cavity, and an impeller is fixedly installed inside the rotating nozzle, and the rotating nozzle has a first gas injection head; a plurality of second gas injection heads, which are fixedly connected to the end of the rotating nozzle.
[0005] Specifically, the rotating nozzle has an annular connecting groove inside, the end surface of the gas injection head has an annular connecting body, the annular connecting body is slidingly connected in the annular connecting groove, so as to realize the rotatable connection of the rotating nozzle to the end of the gas injection cavity.
[0006] It should be understood that after the gas and air are introduced, the air is sprayed into the mixing chamber through the air injection port after passing through the air injection cavity, and the gas is sprayed into the mixing chamber through the rotating nozzle of the gas injection head after passing through the gas injection cavity, so that the gas and air can be mixed in the mixing chamber.
[0007] It needs to be further explained that in the process of gas passing through the second jet head, the gas flow will act on the impeller, and the impeller will drive the rotating nozzle to rotate synchronously under the driving of the gas flow, and then drive the plurality of second jet heads to rotate, realizing the injection of gas in multiple directions of the mixing chamber, increasing the injection points of the gas when being injected into the mixing chamber, which is beneficial to increasing the contact opportunities with the injected air, and then is beneficial to fully and quickly mixing the air with the injected gas.
[0008] In one embodiment, the gas injection cavity has a first external connecting pipe at one end away from the gas injection head, and the first external connecting pipe is in fixed communication with the gas injection cavity. It should be understood that by providing the first external connecting pipe, the function of passing gas to the gas injection cavity is achieved.
[0009] In one embodiment, a second external connecting pipe is in fixed communication with the surface of the air injection cavity. It should be understood that by providing the second external connecting pipe, the function of passing air to the air injection cavity is achieved.
[0010] In one embodiment, the plurality of second jet heads are arranged in a ring array with the first jet head as a reference. It should be understood that arranging the plurality of second jet heads in a ring array with the first jet head as a reference allows the first jet head and the second jet head to be uniformly distributed in space, which is beneficial to uniformly injecting gas into multiple positions of the mixing chamber.
[0011] In one embodiment, the second jet head further comprises a special-shaped communication pipeline, one end of the special-shaped communication pipeline is in communication with the end of the rotating nozzle, and the other end is in communication with the second jet head. It should be understood that the special-shaped communication pipeline extends the second jet head to the vicinity of the air injection inlet, and in the process of mixing, the special-shaped communication pipeline moves with the rotating nozzle to stir the mixed gas in the mixing chamber, which is beneficial to fully and quickly mixing the gas and the air.
[0012] The above-mentioned low-nitrogen waste gas treatment system combustion head assembly, in the process of gas passing through the second jet head, the gas flow will act on the impeller, the impeller will drive the rotating nozzle to rotate synchronously under the driving of the gas flow, and then drive the plurality of second jet heads to rotate, realizing the injection of gas in multiple directions of the mixing chamber, increasing the injection points of the gas when being injected into the mixing chamber, which is beneficial to quickly dispersing the gas, increasing the contact opportunities with the injected air, and then is beneficial to fully and quickly mixing the air with the injected gas.
[0013] The special-shaped communication pipeline extends the second jet head to the vicinity of the air injection inlet, and in the process of mixing, the special-shaped communication pipeline moves with the rotating nozzle to stir the mixed gas in the mixing chamber, which is beneficial to fully and quickly mixing the gas and the air. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0015] Figure 1 It is a whole structure schematic view of the present application;
[0016] Figure 2 It is a whole structure sectional view of the present application;
[0017] Figure 3 It is a structure sectional view of the gas injection cavity of the present application;
[0018] Figure 4 It is a structure sectional view of the rotary nozzle of the present application.
[0019] Reference signs:
[0020] Air injection cavity 1, gas injection cavity 2, mixing cavity 3, air injection port 4, rotary nozzle 5, impeller 6, first jet head 7, second jet head 8, first external connecting pipe 9, second external connecting pipe 10, special-shaped communication pipeline 11, air outlet pipe 12, annular connecting groove 13, annular connecting body 14. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.
[0022] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration, not for the only implementation.
[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0026] The following is combined with Figures 1-4 This invention describes the combustion head assembly of a low-NOx exhaust gas treatment system.
[0027] like Figures 1-4 As shown, in one embodiment, a low-NOx exhaust gas treatment system combustion head assembly includes an air injection chamber 1 and a gas injection chamber 2. The air injection chamber 1 is fitted onto the surface of the gas injection chamber 2 to form a mixing chamber 3. The assembly also includes: an air injection port 4, which communicates with the air injection chamber 1 and is located within the mixing chamber 3; a gas injection head, which includes a rotating nozzle 5, which is rotatably connected to the end of the gas injection chamber 2 and has an impeller 6 fixedly installed inside it. The rotating nozzle 5 has a first jet nozzle 7; and a plurality of second jet nozzles 8, which are all fixedly connected to the end of the rotating nozzle 5.
[0028] Specifically, the rotary nozzle 5 has an annular connecting groove 13 inside, and the end surface of the gas injection head has an annular connecting body 14. The annular connecting body 14 is slidably connected in the annular connecting groove 13, thereby enabling the rotary nozzle 5 to rotate and connect to the end of the gas injection cavity 2.
[0029] It should be understood that after the gas and air are injected, the air is injected into the mixing chamber 3 through the air injection port 4 after passing through the air injection cavity 1, and the gas is injected into the mixing chamber 3 through the rotating nozzle 5 of the gas injection head after passing through the gas injection cavity 2, and the gas and air can be mixed in the mixing chamber 3;
[0030] It should be further explained that in the process of the gas passing through the second gas injection head 8, the gas flow will act on the impeller 6, and the impeller 6 will drive the rotating nozzle 5 to rotate synchronously under the driving of the gas flow, thereby driving the plurality of second gas injection heads 8 to rotate, achieving the injection of gas in multiple directions of the mixing chamber 3, increasing the gas injection points when the gas is injected into the mixing chamber 3, which is beneficial to increasing the contact opportunities with the injected air, and thereby facilitating the sufficient and rapid mixing of the air and the injected gas.
[0031] As shown in Figure 1 , Figure 2 and Figure 3 , in one embodiment, the gas injection cavity 2 has a first external pipe 9 at the end away from the gas injection head, and the first external pipe 9 is fixedly communicated with the gas injection cavity 2. It should be understood that by providing the first external pipe 9, the function of passing the gas to the gas injection cavity 2 is achieved.
[0032] As shown in Figure 1 and Figure 2 , in one embodiment, the surface of the air injection cavity 1 is fixedly communicated with a second external pipe 10. It should be understood that by providing the second external pipe 10, the function of passing the air to the air injection cavity 1 is achieved.
[0033] As shown in Figure 1 , Figure 3 and Figure 4 , in one embodiment, the plurality of second gas injection heads 8 are arranged in a ring array with the first gas injection head 7 as a reference. It should be understood that arranging the plurality of second gas injection heads 8 in a ring array with the first gas injection head 7 as a reference allows the first gas injection head 7 and the second gas injection head 8 to be uniformly distributed in space, which is beneficial to uniformly injecting the gas into multiple positions of the mixing chamber 3.
[0034] As shown in Figure 1 , Figure 3 and Figure 4 , in one embodiment, the second gas injection head 8 further comprises a special-shaped communication pipe 11, one end of the special-shaped communication pipe 11 is communicated with the end of the rotating nozzle 5, and the other end is communicated with the second gas injection head 8. It should be understood that the special-shaped communication pipe 11 extends the second gas injection head 8 to the vicinity of the air injection port 4, and in the mixing process, the special-shaped communication pipe 11 moves with the rotating nozzle 5 to stir the mixed gas in the mixing chamber 3, which is beneficial to the sufficient and rapid mixing of the gas and the air.
[0035] AsFigure 1 、 Figure 3 and Figure 4 As shown in
[0036] As shown in Figure 1 、 Figure 3 and Figure 4 In an embodiment, the second gas jet head 8 is in rotational communication with the special-shaped communication pipe 11, and the angle between the tangent plane of the connection point of the gas outlet pipe 12 and the arc surface and the gas outlet pipe 12 is an acute angle. It should be understood that, in the process of the gas passing through the gas outlet pipe 12, the air acting force is formed, so that the second gas jet head 8 rotates relative to the special-shaped communication pipe 11, thereby facilitating the further uniform injection of the gas.
[0037] The technical features of the above-described embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present disclosure.
[0038] The above-described embodiments only express several implementation manners of the present disclosure, the description is relatively specific and detailed, however, it should not be understood as the limitation on the scope of the present disclosure. It should be pointed out that, for the ordinary skilled in the art, on the premise of not departing from the concept of the present disclosure, a number of modifications and improvements can be made, which all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the appended claims.
Claims
1. A low nitrogen off-gas treatment system combustion head assembly, comprising an air injection cavity (1) and a fuel gas injection cavity (2), the air injection cavity (1) is sleeved on the surface of the fuel gas injection cavity (2) to form a mixing cavity (3), characterized in that: Also include: Air injection inlet (4), the air injection inlet (4) is communicated with air injection cavity (1), and is located in mixing cavity (3); Gas injection head, the gas injection head includes rotating spray head (5), rotating spray head (5) is communicated in the end of gas injection cavity (2), and the impeller (6) is fixedly installed inside, rotating spray head (5) has first jet head (7); Multiple second jet head (8), multiple second jet head (8) are fixedly communicated in the end of rotating spray head (5).
2. The low NOx exhaust gas treatment system burner head assembly of claim 1, wherein, The first outer connecting pipe (9) is fixedly communicated with the gas injection cavity (2) at the end of the gas injection cavity (2) away from the gas injection head.
3. The low NOx exhaust gas treatment system combustion head assembly of claim 2, wherein, The surface of the air injection cavity (1) is fixedly communicated with the second outer connecting pipe (10).
4. The low NOx exhaust gas treatment system combustion head assembly of claim 3, wherein, Multiple second jet head (8) is annular array distribution with first jet head (7) as reference.
5. The low NOx exhaust gas treatment system combustion head assembly of claim 4, wherein, The second jet head (8) further includes profiled communication pipeline (11), one end of profiled communication pipeline (11) is communicated with the end of rotating spray head (5), and the other end is communicated with second jet head (8).
6. The low NOx exhaust gas treatment system combustion head assembly of claim 5, wherein, The second jet head (8) is cylindrical, and multiple air outlet pipes (12) are fixedly communicated on the circular arc surface of the second jet head (8).
7. The low NOx exhaust gas treatment system combustion head assembly of claim 6, wherein, The second jet head (8) is communicated with the profiled communication pipeline (11), and the included angle between the tangent plane of the connecting point of the air outlet pipe (12) and the circular arc surface and the air outlet pipe (12) is acute.