CN213932008U - Supersonic rotary spray pipe - Google Patents
Supersonic rotary spray pipe Download PDFInfo
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- CN213932008U CN213932008U CN202022408293.0U CN202022408293U CN213932008U CN 213932008 U CN213932008 U CN 213932008U CN 202022408293 U CN202022408293 U CN 202022408293U CN 213932008 U CN213932008 U CN 213932008U
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Abstract
The utility model discloses a rotatory spray tube of supersonic speed aims at providing the rotatory spray tube of supersonic speed that can reduce fuel consumption. The device comprises a reducing section, a gradually expanding section, a rotational flow section, rotational flow blades and a nozzle, wherein the reducing section is connected with the gradually expanding section, and a throat is formed between the reducing section and the gradually expanding section; the two ends of the rotational flow section are respectively connected with the divergent section and the nozzle through flange structures, and the divergent section, the rotational flow section and the nozzle form a shape with gradually enlarged and expanded sectional areas; the swirl blades are distributed on the inner wall of the swirl section in a spiral shape at equal intervals. The utility model is suitable for a multiple smelting furnace uses.
Description
Technical Field
The utility model relates to a rotary kiln technical field specifically relates to a rotatory spray tube of supersonic speed.
Background
The Laval nozzle is an important part for energy conversion in combustion and is a high-temperature high-compression-ignition gas outlet in combustion. The basic functions of a laval nozzle are broadly divided into two: firstly, the mass flow rate of the fuel gas can be controlled through the size of the throat part of the spray pipe, and the pressure of the fuel gas in the combustion chamber can be controlled; secondly, the gas flow energy is accelerated from subsonic speed to supersonic speed by adopting the cross section shape of converging and expanding.
The laval nozzle is used in supersonic wind tunnel, jet engine, steam turbine, rocket propeller and other equipment needing supersonic airflow, and is an important part of the thrust chamber and the most common component of rocket engine and aeroengine. The Laval nozzle is of a two-section conical structure, the front half section of the Laval nozzle is contracted from big to small to the middle, the back half section of the Laval nozzle is in an expanding shape with gradually-increased sectional area, a narrow throat is formed between the two conical sections, and when gas flows into the front half section of the nozzle under high pressure and passes through the narrow throat, the gas escapes from the back half section.
The laval nozzle has application in metallurgical industry, such as oxygen-enriched bottom blowing converter steelmaking, Osmant furnace oxygen-enriched smelting, etc., the laval nozzle with reasonable design combines the nozzle with a certain opening angle to form an oxygen-enriched burner, and the formed high-speed jet flow is sprayed into a furnace kiln from the oxygen-enriched burner by utilizing the gas acceleration effect of a gradually expanding section, so that the penetration force of a molten pool can be increased, the coal consumption is reduced, and the smelting effect is improved. But high velocity jets increase melt splash losses and increase smoke volume. Therefore, the design of a reasonable Laval nozzle structure and the improvement of the gas injection state are very necessary for improving the smelting strength, reducing the fuel consumption and reducing the splashing loss and the smoke amount.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects existing in the prior art and providing a supersonic speed rotary spray pipe. It can reduce coal consumption, injection loss and smoke amount.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
a supersonic speed rotary spray pipe comprises a reducing section, a gradually expanding section, a rotational flow section, rotational flow blades and a nozzle, wherein the reducing section is connected with the gradually expanding section, and a throat is formed between the reducing section and the gradually expanding section; the two ends of the rotational flow section are respectively connected with the divergent section and the nozzle through flange structures, and the divergent section, the rotational flow section and the nozzle form a shape with gradually enlarged and expanded sectional areas; the swirl blades are distributed on the inner wall of the swirl section in a spiral shape at equal intervals.
Specifically, the swirl vanes are in a right-angle trapezoid shape, and the oblique waist edges of the swirl vanes are fixedly connected with the inner wall of the swirl section; the upper bottom edge of the swirl vane is positioned at the smaller diameter end of the swirl section.
Specifically, the length of the upper bottom edge of the swirl vane is 1/5 of the diameter of the swirl section.
Specifically, the straight waist edge of the swirl vane is parallel to the axis of the swirl section.
Specifically, the thickness of the swirl vane is 6-10 mm.
Specifically, the spiral deflection angle of the swirl vane is 20-25 ℃.
Specifically, the center distance between the swirl vanes is 35-45 mm.
Compared with the prior art, the utility model has the advantages of as follows:
the utility model is used for the furnace kiln during operation, the pressurized air current is through convergent section, gradual expansion section in proper order, and the earlier shrink of air current circulation passageway expands again this moment, and gas reaches the supersonic speed state at the laryngeal opening, and the air current has the whirl blade through the whirl section afterwards, and the welding has the whirl blade in the whirl section, and the whirl blade mid portion is unobstructed and is the circulation state, and at this moment, the gas circulation state has two kinds: the gas flowing through the edge forms a rotational flow after passing through the rotational flow blades, the intermediate gas flow maintains the original state, and after the mixed gas flow enters the rotary kiln through the divergent section injection, the material is blown by the gas flow and is calcined rapidly. The rotational flow can improve the gas injection state and improve the material calcination effect, thereby reducing the coal consumption and the injection loss and the smoke amount.
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 description of the embodiments or the prior art will be briefly described below, 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 drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a sectional view of the small end of the swirl section;
FIG. 3 is a cross-sectional view of the large mouth end of the swirl section;
in the figure: 1-convergent section, 2-divergent section, 3-cyclone section, 4-cyclone blade and 5-nozzle.
Detailed Description
For more clearly illustrating the objects, technical solutions and advantages of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments described below belong to the scope of protection of the present invention.
In the description of the present invention, technical or scientific terms used should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs. It should be noted that unless otherwise expressly stated or limited, the terms "mounted," "connected," "disposed," and the like are intended to be broadly construed and include, for example, fixedly connected, disposed, detachably connected, disposed, and integrally connected and disposed. The terms "connected" and similar terms are not limited to physical or mechanical connections, but may also include electrical connections, and those skilled in the art will understand the specific meanings of the above terms in the present invention according to specific situations. The terms "comprises" or "comprising," and the like, mean that the element or item preceding the term includes the element or item listed after the term and its equivalent, but not excluding other elements or items. The terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 in describing and simplifying the present invention, and do not indicate or imply that the device or element being 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.
Meanwhile, in order to keep the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known parts is omitted.
As shown in the attached drawings, the supersonic rotary nozzle of the present invention comprises a convergent section 1, a divergent section 2, a rotational flow section 3, rotational flow blades 4 and a nozzle 5, wherein the convergent section 1 is connected with the divergent section 2 and a throat is formed between the convergent section and the divergent section; the two ends of the rotational flow section 3 are respectively connected with the divergent section 2 and the nozzle 5 through flange structures, and the divergent section 2, the rotational flow section 3 and the nozzle 5 form a shape with gradually enlarged and expanded sectional areas; the swirl vanes 4 are distributed on the inner wall of the swirl section 3 in a spiral shape at equal intervals.
In the embodiment, the swirl vanes 4 are in a right trapezoid shape, and the oblique waist edges (oblique edges of the right trapezoid waist) of the swirl vanes are fixedly connected with the inner wall of the swirl section 3; the upper bottom edges of the swirl vanes 4 are positioned at the smaller diameter end of the swirl section 3. The length of the upper bottom edge of the swirl vane 4 is 1/5 of the diameter of the swirl section 3. The straight waist edge (the vertical edge of the right-angle trapezoid waist) of the swirl vane 4 is parallel to the axis of the swirl section 3. The thickness of the swirl vanes 4 is 6-10 mm. The spiral deflection angle of the rotational flow blade 4 is 20-25 ℃. The center distance between the rotational flow blades 4 is 35-45 mm. The seal between the divergent section 2 and the rotational flow section 3 is hard seal, the connection contact surface of the flange structure is spherical contact seal, and the surface roughness of the flange reaches the mirror surface effect. Obviously, the above is only one specific embodiment of the present invention, and the shape and parameters of the swirl vanes 4 can be reasonably adjusted according to the needs.
When the rotary kiln works, the supersonic rotary spray pipe and the rotary kiln body form a certain included angle (about 10 ℃), and materials stacked at the bottom of the rotary kiln body are blown up and fully calcined. During operation, fuel gas from an external pipe network sequentially passes through the reducing section 1 and the expanding section 2 and then enters the rotational flow section 3, airflow forms rotational flow under the rotational direction action of the rotational flow blades 4, and finally the rotational flow enters the rotary kiln through the injection nozzle 5. The pressurized airflow reaches a supersonic speed state at the throat, then the airflow passes through the cyclone section, the middle part of the cyclone blade is in a flowing state without obstruction, and at the moment, the gas flowing state has two types: the gas flowing through the edge forms a rotational flow after passing through the rotational flow blades, the intermediate gas flow maintains the original state, and after the mixed gas flow enters the rotary kiln through the divergent section injection, the material is blown by the gas flow and is calcined rapidly. The rotational flow can improve the gas injection state and improve the material calcination effect, thereby reducing the coal consumption and the injection loss and the smoke amount.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. It should be understood by those skilled in the art that any modification, equivalent replacement, or improvement made to the technical solutions or parts of technical features described in the above embodiments can be included in the scope of the present invention within the spirit and principle of the present invention.
Claims (7)
1. A supersonic speed rotary spray pipe comprises a reducing section (1), a gradually expanding section (2), a rotational flow section (3), rotational flow blades (4) and a nozzle (5), wherein the reducing section (1) is connected with the gradually expanding section (2) to form a throat; the method is characterized in that: the two ends of the cyclone section (3) are respectively connected with the divergent section (2) and the nozzle (5) through flange structures, and the divergent section (2), the cyclone section (3) and the nozzle (5) form a shape with gradually enlarged and expanded sectional areas; the swirl blades (4) are distributed on the inner wall of the swirl section (3) in a spiral shape at equal intervals.
2. The supersonic rotary nozzle of claim 1, wherein: the swirl blades (4) are in a right-angle trapezoid shape, and the oblique waist edges of the swirl blades are fixedly connected with the inner wall of the swirl section (3); the upper bottom edge of the swirl vane (4) is positioned at the smaller diameter end of the swirl section (3).
3. The supersonic rotary nozzle of claim 2, wherein: the length of the upper bottom edge of the swirl vane (4) is 1/5 of the diameter of the swirl section (3).
4. The supersonic rotary nozzle of claim 2, wherein: the straight waist edge of the rotational flow blade (4) is parallel to the axis of the rotational flow section (3).
5. The supersonic rotary nozzle of claim 1 or 2, wherein: the thickness of the rotational flow blade (4) is 6-10 mm.
6. The supersonic rotary nozzle of claim 1 or 2, wherein: the spiral deflection angle of the cyclone blade (4) is 20-25 ℃.
7. The supersonic rotary nozzle of claim 1 or 2, wherein: the center distance between the cyclone blades (4) is 35-45 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022408293.0U CN213932008U (en) | 2020-10-26 | 2020-10-26 | Supersonic rotary spray pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022408293.0U CN213932008U (en) | 2020-10-26 | 2020-10-26 | Supersonic rotary spray pipe |
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| Publication Number | Publication Date |
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| CN213932008U true CN213932008U (en) | 2021-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114380347A (en) * | 2022-02-11 | 2022-04-22 | 南方电网电力科技股份有限公司 | Flue gas distributor for rotary spray evaporation of desulfurization wastewater |
-
2020
- 2020-10-26 CN CN202022408293.0U patent/CN213932008U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114380347A (en) * | 2022-02-11 | 2022-04-22 | 南方电网电力科技股份有限公司 | Flue gas distributor for rotary spray evaporation of desulfurization wastewater |
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