CN214075919U - Electric arc wind tunnel ablation tail gas treatment device - Google Patents
Electric arc wind tunnel ablation tail gas treatment device Download PDFInfo
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- CN214075919U CN214075919U CN202022762345.4U CN202022762345U CN214075919U CN 214075919 U CN214075919 U CN 214075919U CN 202022762345 U CN202022762345 U CN 202022762345U CN 214075919 U CN214075919 U CN 214075919U
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Abstract
The utility model provides an electric arc wind-tunnel ablation tail gas processing apparatus, include: a tail gas primary treatment device and a gas reaction device; the gas reaction device is arranged behind the tail gas primary treatment device, harmful tail gas generated after an electric arc wind tunnel ablates a model firstly passes through the tail gas primary treatment device and then passes through the gas reaction device; the gas reaction device comprises: a tail gas distributor, a tail gas cyclone and a neutralization liquid injection device; the inlet end of the tail gas distributor is connected with the tail gas primary treatment device, and the outlet end of the tail gas distributor is connected with the tail gas cyclone; and the tail gas cyclone is arranged in the neutralizing liquid injection device. The utility model divides the tail gas treatment into two stages, namely primary treatment of larger particles and sufficient reaction of proper amount of gas, and the emission of pollution gas can be effectively reduced after the treatment of the two stages; furthermore, the device of the utility model is simple in structure, easy to operate and manufacture.
Description
Technical Field
The utility model belongs to the technical field of the tail gas treatment technique and specifically relates to an electric arc wind-tunnel ablation tail gas processing apparatus is related to.
Background
When the model is ablated by using the electric arc wind tunnel in the aerospace field, as most of model materials are organic composite materials, toxic and harmful gases such as nitrogen oxides and the like can be generated after high-temperature combustion, the ablated tail gas needs to be treated, and the emission of pollution gas is reduced.
Under the existing conditions, the tail gas is mostly discharged into a reaction tower by a vacuum pump, and the top of the reaction tower is treated by a method of spraying a neutralizing liquid downwards for neutralization, so that when the tail gas flow is large and the concentration of nitrogen oxides is high, the reaction is often insufficient, and a large amount of polluted gas is leaked.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electric arc wind-tunnel ablation tail gas processing apparatus can solve when tail gas pollutant concentration is high, the flow is big, and tail gas can not fully be handled in the reaction tower, still has a large amount of tail gas exhaust problem.
The utility model provides an electric arc wind-tunnel ablation tail gas processing apparatus, include: a tail gas primary treatment device and a gas reaction device; the gas reaction device is arranged behind the tail gas primary treatment device, harmful tail gas generated after an electric arc wind tunnel ablates a model firstly passes through the tail gas primary treatment device and then passes through the gas reaction device; the gas reaction device comprises: a tail gas distributor, a tail gas cyclone and a neutralization liquid injection device; the inlet end of the tail gas distributor is connected with the tail gas primary treatment device, and the outlet end of the tail gas distributor is connected with the tail gas cyclone; and the tail gas cyclone is arranged in the neutralizing liquid injection device.
Further, the tail gas primary treatment device comprises a plurality of tail gas filtering adsorbers; the tail gas filtering adsorbers are arranged in the cavity of the primary tail gas treatment device at equal intervals.
Further, the tail gas filtering adsorber comprises a multilayer pore plate provided with filtering holes; the filtering holes are uniformly arranged on the multi-layer hole plate.
Furthermore, each layer of the multilayer pore plate is made of activated carbon.
Further, the pore size of the filtering pores on the multi-layer pore plate closer to the gas reaction device is smaller.
Further, the outlet ends of the tail gas distributors are uniformly divided into a plurality of gas channels; each gas channel is connected with one tail gas cyclone respectively.
Furthermore, a plurality of exhaust holes are formed in the outer surface of the tail gas cyclone, and the exhaust holes are inclined to the outer surface of the tail gas cyclone.
Furthermore, an included angle exists between the adjacent exhaust holes.
Furthermore, a plurality of injection channels are arranged in the neutralizing liquid injection device and are used for injecting neutralizing liquid.
Compared with the prior art, the beneficial effects of the utility model are that: the tail gas treatment is divided into two stages, namely a primary treatment stage aiming at larger particles and a neutralization reaction stage aiming at the gas with higher concentration of nitrogen oxides, so that the content of the discharged gas pollutants is greatly reduced; furthermore, the utility model discloses simple structure easily operates and makes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of an arc wind tunnel ablation tail gas treatment device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a primary tail gas processor according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a tail gas cyclone according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a neutralizing liquid injector according to an embodiment of the present invention.
Description of reference numerals:
1: tail gas; 2: a tail gas primary processor; 21: a multi-layer orifice plate; 22: a filtration pore; 3: a tail gas distributor; 4: a tail gas cyclone; 41: an exhaust hole; 5: a neutralization solution ejector; 51: an injection channel.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be 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.
As shown in fig. 1 to 4, the utility model provides an electric arc wind tunnel ablation tail gas processing apparatus, include: a tail gas primary treatment device 2 and a gas reaction device; the gas reaction device is arranged behind the tail gas primary treatment device 2, harmful tail gas 1 generated after the electric arc wind tunnel ablates the model firstly passes through the tail gas primary treatment device 2 and then passes through the gas reaction device. The tail gas primary treatment device 2 comprises a plurality of tail gas filtering adsorbers; the tail gas filtering adsorbers are arranged in the cavity of the primary tail gas treatment device 2 at equal intervals. The tail gas filtering adsorber filters and adsorbs the tail gas generated after the electric arc wind tunnel ablation model into larger particles. The gas reaction device comprises: a tail gas distributor 3, a tail gas cyclone 4 and a neutralization liquid injection device 5; the inlet end of the tail gas distributor 3 is connected with the outlet of the primary tail gas treatment device 2, and the outlet end of the tail gas distributor is connected with the tail gas cyclone 4; and the tail gas cyclone 4 is arranged in the neutralizing liquid spraying device 5. The outlet end of the tail gas distributor 3 is uniformly divided into a plurality of gas channels; each gas channel is connected with a tail gas cyclone 4. The tail gas distributor 3 distributes the tail gas after filtering and adsorption to a plurality of gas channels again after gathering, thereby ensuring that the following neutralization reaction is fully carried out in a small cavity.
As shown in fig. 1 and 2, in a more preferred embodiment, the exhaust gas filtering adsorber includes a multi-layer orifice plate 21 provided with filtering orifices 22; the filtering holes 22 are uniformly arranged on the multi-layered hole plate 21. Each layer of the multi-layer orifice plate 21 is made of activated carbon. In other embodiments, the multi-layer orifice plate 21 may be made of an adsorbent material other than activated carbon. The pore size of the filtering pores 22 on the multi-layer pore plate 21 closer to the gas reaction device is smaller. In fig. 1, the pore diameter of the filter pores 22 on the multilayer pore plate 21 arranged from left to right in the cavity of the primary tail gas treatment device 2 is gradually reduced, so as to realize filtration and adsorption of solid particles with different sizes in the tail gas 1. The larger solid particles are isolated and blocked at the front part of the tail gas primary treatment device 2, and the smaller solid particles are filtered and baffled step by step.
In a more preferred embodiment, as shown in fig. 3, the outer surface of the tail gas cyclone 4 is provided with a plurality of exhaust holes 41, and the exhaust holes 41 are inclined to the outer surface of the tail gas cyclone 4. An included angle exists between adjacent exhaust holes 41. The exhaust holes 41 are formed at a certain angle, so that the exhaust gas 1 forms a rotational flow after passing through.
As shown in FIG. 4, in a more preferred embodiment, the neutralizing liquid injector 5 is internally provided with an injection channel 51, and three wall surfaces of the injection channel 51 are provided with liquid discharge holes, so that the neutralizing liquid is uniformly injected from all directions, and the neutralizing effect of the neutralizing liquid is improved.
The utility model discloses a theory of operation is: during the test, tail gas 1 generated after the electric arc wind tunnel ablation model finishes the filtration and adsorption of large solid particles through a tail gas primary processor 2, enters a plurality of small cavities through a tail gas distributor 3, forms a rotational flow through a tail gas cyclone 4, is discharged from an exhaust hole 41, and fully reacts with neutralizing liquid sprayed by a neutralizing liquid sprayer 5 in the small cavities, so that the emission of polluted gas is effectively reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. An electric arc wind tunnel ablation tail gas processing apparatus, characterized by includes: a tail gas primary treatment device (2) and a gas reaction device; the gas reaction device is arranged behind the tail gas primary treatment device (2), harmful tail gas (1) generated after an electric arc wind tunnel ablates a model firstly passes through the tail gas primary treatment device (2) and then passes through the gas reaction device;
the gas reaction device comprises: a tail gas distributor (3), a tail gas cyclone (4) and a neutralization liquid injection device (5); the inlet end of the tail gas distributor (3) is connected with the tail gas primary treatment device (2), and the outlet end of the tail gas distributor is connected with the tail gas cyclone (4); and the tail gas cyclone (4) is arranged in the neutralizing liquid spraying device (5).
2. The electric arc wind tunnel ablation tail gas treatment device according to claim 1, wherein the tail gas primary treatment device (2) comprises a plurality of tail gas filtering adsorbers; the tail gas filtering adsorbers are arranged in the cavity of the primary tail gas treatment device (2) at equal intervals.
3. The electric arc wind tunnel ablation tail gas treatment device according to claim 2, wherein the tail gas filtering adsorber comprises a multilayer pore plate (21) provided with filtering holes (22); the filter holes (22) are uniformly arranged on the multi-layer hole plate (21).
4. The arc wind tunnel ablation tail gas treatment device according to claim 3, wherein each layer of the multilayer pore plate (21) is made of activated carbon.
5. The electric arc wind tunnel ablation tail gas treatment device according to claim 3, wherein the pore diameter of the filter holes (22) on the multilayer pore plate (21) closer to the gas reaction device is smaller.
6. The arc wind tunnel ablation tail gas treatment device according to claim 1, wherein the outlet end of the tail gas distributor (3) is divided into a plurality of gas channels; each gas channel is respectively connected with one tail gas cyclone (4).
7. The arc wind tunnel ablation tail gas treatment device according to claim 1, wherein a plurality of exhaust holes (41) are formed in the outer surface of the tail gas cyclone (4), and the exhaust holes (41) are inclined to the outer surface of the tail gas cyclone (4).
8. The device for processing the ablation tail gas of the electric arc wind tunnel according to claim 7, wherein an included angle exists between the adjacent exhaust holes (41).
9. The arc wind tunnel ablation tail gas treatment device according to claim 1, wherein a plurality of injection channels (51) are arranged in the neutralization liquid injection device (5) and are used for injecting neutralization liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022762345.4U CN214075919U (en) | 2020-11-25 | 2020-11-25 | Electric arc wind tunnel ablation tail gas treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022762345.4U CN214075919U (en) | 2020-11-25 | 2020-11-25 | Electric arc wind tunnel ablation tail gas treatment device |
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| CN214075919U true CN214075919U (en) | 2021-08-31 |
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| CN202022762345.4U Active CN214075919U (en) | 2020-11-25 | 2020-11-25 | Electric arc wind tunnel ablation tail gas treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112316700A (en) * | 2020-11-25 | 2021-02-05 | 中国航天空气动力技术研究院 | Electric arc wind tunnel ablation tail gas treatment device |
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2020
- 2020-11-25 CN CN202022762345.4U patent/CN214075919U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112316700A (en) * | 2020-11-25 | 2021-02-05 | 中国航天空气动力技术研究院 | Electric arc wind tunnel ablation tail gas treatment device |
| CN112316700B (en) * | 2020-11-25 | 2024-08-20 | 中国航天空气动力技术研究院 | Arc wind tunnel ablation tail gas treatment device |
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