CN114682405A - Internal rotational flow cross hole injector - Google Patents
Internal rotational flow cross hole injector Download PDFInfo
- Publication number
- CN114682405A CN114682405A CN202011640930.5A CN202011640930A CN114682405A CN 114682405 A CN114682405 A CN 114682405A CN 202011640930 A CN202011640930 A CN 202011640930A CN 114682405 A CN114682405 A CN 114682405A
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- CN
- China
- Prior art keywords
- cavity
- channel
- cross
- communicated
- injector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 14
- 238000000889 atomisation Methods 0.000 abstract description 10
- 239000007921 spray Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 7
- 238000001704 evaporation Methods 0.000 abstract description 3
- 230000008020 evaporation Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 1
- 239000005052 trichlorosilane Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses an internal rotational flow cross hole injector. The device comprises a first cavity, a second cavity, a first channel, a second channel, a third cavity and a fourth cavity; a second cavity and a third cavity are sequentially arranged outside the first cavity; a fourth cavity is arranged at the lower part of the first cavity; the first cavity is communicated with the second cavity through a first channel; the first cavity and the fourth cavity are communicated through a second channel; the third cavity is communicated with the fourth cavity through a third channel; the first cavity, the second cavity, the third cavity and the fourth cavity are coaxial. The second channel provides space rotational flow guide for the second fluid, and the first fluid is rapidly assisted to be crushed and atomized after the rotational flow is formed, so that the atomization effect is enhanced; the third fluid flows through the third channel and then collides with the spray in the fourth cavity, so that the disturbance effect can be enhanced; the spray particle size is reduced by more than 25% under the same spray pressure, and the fluid evaporation, atomization and mixing efficiency is improved by more than 50%.
Description
Technical Field
The invention relates to the technical field of ejectors and nozzles, in particular to an internal swirl cross hole ejector.
Background
The ejector is applied to various spraying, atomizing, oil spraying, sand blasting, spraying and other equipment, plays an important role, and is a part which is very critical to influence the fluid atomization effect. The application of the ejector in the industry is very wide, but the ejector in the prior art has poor fluid mixing uniformity, large spray particle size under the same spray pressure and low fluid evaporation, atomization and mixing efficiency.
For example, in the field of internal combustion engines, during the fuel atomization and injection process in the engine cylinder, the fuel atomization effect has a great influence on the fuel combustion effect, thereby directly influencing the pollutant discharge amount. As national emission regulations become more stringent, the requirements for fuel injectors become more stringent.
For example, in an engine aftertreatment system, in order to reduce the amount of NOx emissions, a reductant is injected into the exhaust gas, mixed with NOx and reacted in an SCR system to reduce the emissions. However, the atomization effect of the reducing agent is to be improved, and there is a problem of crystallization.
For example, the mixed gas of trichlorosilane and hydrogen in the field of polysilicon production enters a furnace chamber of a reduction furnace through a mixed gas nozzle, the reaction is completed at high temperature and high pressure, and the generated silicon is deposited on a silicon core rod. But unqualified polysilicon can be generated in the process, and the phenomenon of silicon melting such as burning flow and the like can occur in serious cases, so that the appearance quality of the polysilicon is greatly reduced, and the processing and the sale of products are not facilitated.
Disclosure of Invention
The invention aims to provide an internal swirl cross-hole injector to solve the technical problem.
In order to solve the technical problems, the invention adopts the following technical scheme:
an internal swirl cross-hole injector comprises a first cavity, a second cavity, a first channel, a second channel, a third cavity and a fourth cavity; a second cavity and a third cavity are sequentially arranged outside the first cavity; a fourth cavity is arranged at the lower part of the first cavity; the first cavity is communicated with the second cavity through a first channel; the first cavity is communicated with the fourth cavity through a second channel; the third cavity is communicated with the fourth cavity through a third channel; the first cavity, the second cavity, the third cavity and the fourth cavity are coaxial.
Further, the cross section of the first channel and the third channel is one of a straight cylinder type, a tapered type, a gradually expanding type, a gradually contracting and gradually expanding type and a gradually expanding and gradually contracting type.
Furthermore, the cross section of the first channel and the cross section of the third channel are in one of a circular shape, an oval shape, a square shape, a diamond shape, a slit shape, an intermittent circular shape, a triangular shape and a round corner rectangle.
Furthermore, the first channel and the third channel are both arranged in an inclined manner, one end of the first channel, which is close to the first cavity, is inclined towards one side of the second channel, and one end of the third channel, which is close to the fourth cavity, is inclined towards the opposite side of the second channel.
Furthermore, the first channel and the third channel are both provided with a plurality of arrays, and the axes of the first channel and the third channel are not intersected with the axis of the first cavity.
Furthermore, the cross section of the second channel is in one or a combination of several of a straight cylinder type, a tapered type, a gradually expanding type and a gradually expanding and reducing type.
Furthermore, the second channel is provided with a plurality of channels, one end of each second channel is uniformly distributed at the bottom of the first cavity, and the other end of each second channel inclines towards the axis of the first cavity and intersects with the axis of the first cavity.
The invention is used for enhancing the effect of fluid crushing, atomizing and mixing; high-disturbance cross spray holes are adopted, so that disturbance can be effectively enhanced, and spray crushing and atomization are promoted; the second fluid with rotational flow is shot to the first fluid cavity at high speed to be fully mixed with the first fluid in the first cavity, and the third fluid is shot to the fourth cavity through the third channel to enhance mixing and assist atomization. The ejector provided by the invention can effectively improve the fluid mixing uniformity, the spray particle size is reduced by more than 25% under the same spray pressure, and the fluid evaporation, atomization and mixing efficiency is improved by more than 50%.
Drawings
Fig. 1 is an overall structural view of the present invention.
FIG. 2 is a cross-sectional view of a second channel of a straight tubular type in an embodiment of the present invention.
Fig. 3 is a cross-sectional view of a second channel sub-channel of an embodiment of the invention being straight-tube shaped.
Fig. 4 is a cross-sectional view of a second channel sub-channel of an embodiment of the invention that is tapered.
Fig. 5 is a cross-sectional view of a second channel sub-channel of an embodiment of the invention, the second channel sub-channel being divergent.
Fig. 6 is a cross-sectional view of a second channel sub-channel of an embodiment of the invention, the second channel sub-channel being tapered.
Fig. 7 is a cross-sectional view of a second channel sub-channel of a tapered type in accordance with an embodiment of the present invention.
Fig. 8 is a sectional view showing a cross-sectional shape of a swirl hole of a first passage in an embodiment of the present invention, the cross-sectional shape being a straight cylinder type.
Fig. 9 is a sectional view showing a sectional shape of a swirl hole of a first passage which is tapered in the embodiment of the present invention.
FIG. 10 is a sectional view showing a sectional shape of a swirl hole of a first passage in an embodiment of the present invention, the sectional view being divergent.
FIG. 11 is a cross-sectional view of a swirl hole of a first passage of an embodiment of the invention, the cross-sectional shape being tapered and diverging.
FIG. 12 is a sectional view showing a sectional shape of a swirl hole of a first passage of an embodiment of the present invention, the sectional view being a gradually expanding and gradually contracting type.
FIG. 13 is a cross-sectional view of a first passage swirl hole cross-sectional shape that is cylindrical and does not intersect the first chamber axis in an embodiment of the present invention.
Fig. 14 is a sectional view showing a cross-sectional shape of a swirl hole of a third passage in an embodiment of the present invention, which is a straight tube type.
Fig. 15 is a sectional view showing a cross-sectional shape of a swirl hole of a third passage which is tapered in the embodiment of the present invention.
Fig. 16 is a sectional view showing a sectional shape of a swirl hole of a third passage being divergent in an embodiment of the present invention.
Fig. 17 is a cross-sectional view of a swirl hole of a third passage in an embodiment of the invention, the cross-sectional shape being tapered and diverging.
Fig. 18 shows a cross-sectional shape of a swirl hole of a third passage according to an embodiment of the present invention, which may be a divergent tapered type.
FIG. 19 is a cross-sectional view of a third passage swirl hole of a cylindrical cross-sectional shape that does not intersect the first chamber axis, in accordance with an embodiment of the present invention.
In the figure: 1-a first cavity; 2-a second cavity; 3-a first channel; 4-a second channel; 5-a third channel; 6-a third cavity; 7-fourth chamber.
Detailed Description
The technical solution of the present invention is further illustrated by the accompanying drawings and examples.
The embodiment provides an internal rotational flow cross hole injector in combination with fig. 1-2, which comprises a first cavity 1, a second cavity 2, a first channel 3, a second channel 4, a third channel 5, a third cavity 6 and a fourth cavity 7; the second cavity 2 and the third cavity 6 are sequentially arranged outside the first cavity 1; a fourth cavity 7 is arranged at the lower part of the first cavity 1; the first cavity 1 is communicated with the second cavity 2 through a first channel 3; the first cavity 1 is communicated with the fourth cavity 7 through a second channel 4; the third cavity 6 is communicated with the fourth cavity 7 through a third channel 5; the first cavity 1, the second cavity 2, the third cavity 6 and the fourth cavity 7 are coaxial.
The axial cross section of the first channel 3 and the third channel 5 is one of a straight cylinder type, a tapered type, a gradually expanded type, a gradually tapered and gradually expanded type and a gradually expanded and gradually contracted type.
The cross section of the first channel 3 and the third channel 5 is one of a circle, an ellipse, a square, a diamond, a slit shape, an intermittent circular ring shape, a triangle and a round corner rectangle.
The first channel 3 and the third channel 5 are both obliquely arranged, one end of the first channel 3 close to the first cavity 1 is oblique to one side of the second channel 4, and one end of the third channel 5 close to the fourth cavity 7 is oblique to the opposite side of the second channel 4.
The first channel 3 and the third channel 5 are both provided with a plurality of arrays, and the axes of the first channel 3 and the third channel 5 are not intersected with the axis of the first cavity 1.
The cross section of the second channel 4 is one or a combination of several of a straight cylinder type, a tapered type, a gradually expanding type, a gradually contracting and gradually expanding type and a gradually expanding and reducing type.
The second channel 4 is provided with a plurality of second channels 4, one end of each second channel 4 is uniformly distributed at the bottom of the first cavity 1, and the other ends of the second channels incline to the axis of the first cavity 1 and intersect with the axis.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (7)
1. An internal rotational flow cross hole injector is characterized by comprising a first cavity, a second cavity, a first channel, a second channel, a third cavity and a fourth cavity; a second cavity and a third cavity are sequentially arranged outside the first cavity; a fourth cavity is arranged at the lower part of the first cavity; the first cavity is communicated with the second cavity through a first channel; the first cavity is communicated with the fourth cavity through a second channel; the third cavity is communicated with the fourth cavity through a third channel; the first cavity, the second cavity, the third cavity and the fourth cavity are coaxial.
2. The internal swirl cross bore injector of claim 1, wherein the first and third passageway axial cross sectional shape is one of a straight barrel, tapered, diverging, tapered diverging.
3. The internal swirl cross-port injector of claim 2 wherein the first and third passages have a cross-sectional shape that is one of circular, elliptical, square, diamond, slit, interrupted circular, triangular, or rounded rectangular.
4. The internal swirl cross-hole injector of claim 3 wherein the first and third passageways are angled such that the end of the first passageway adjacent the first chamber is angled toward the side of the second passageway and the end of the third passageway adjacent the fourth chamber is angled toward the opposite side of the second passageway.
5. The internal swirl cross-hole injector of claim 4 wherein the first and third passages are each arrayed in plurality and the first and third passage axes do not intersect the first cavity axis.
6. The internal swirl cross-port injector of claim 1 wherein the second passageway cross-sectional shape is one or a combination of straight, tapered, diverging, converging-diverging, and diverging-converging.
7. The internal swirl cross-hole injector of claim 6 wherein the second passages are provided in plurality, one end of the second passages being evenly distributed at the bottom of the first chamber and the other end being inclined to and converging with the axis of the first chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011640930.5A CN114682405A (en) | 2020-12-31 | 2020-12-31 | Internal rotational flow cross hole injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011640930.5A CN114682405A (en) | 2020-12-31 | 2020-12-31 | Internal rotational flow cross hole injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114682405A true CN114682405A (en) | 2022-07-01 |
Family
ID=82136241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011640930.5A Pending CN114682405A (en) | 2020-12-31 | 2020-12-31 | Internal rotational flow cross hole injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114682405A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1451063A (en) * | 1923-04-10 | Burner | ||
| US4625916A (en) * | 1983-07-16 | 1986-12-02 | Lechler Gmbh & Co., Kg | Cylindrical inset for a binary atomizing nozzle |
| JP2002159889A (en) * | 2000-11-24 | 2002-06-04 | Ikeuchi:Kk | Two-fluid nozzle |
| WO2007080084A1 (en) * | 2006-01-09 | 2007-07-19 | Dieter Wurz | Two-component nozzle |
| CN101287555A (en) * | 2005-10-07 | 2008-10-15 | 迪特尔·沃尔兹 | Atomizing nozzle for two substances |
| CN201807473U (en) * | 2010-07-09 | 2011-04-27 | 中冶京诚工程技术有限公司 | Novel gas spray nozzle without gas resistance |
| CN205413411U (en) * | 2016-03-21 | 2016-08-03 | 深圳市华兴四海机械设备有限公司 | Two -fluid spray tube |
| CN110805512A (en) * | 2018-08-05 | 2020-02-18 | 大连理工大学 | Nozzle with torsional composite hole |
-
2020
- 2020-12-31 CN CN202011640930.5A patent/CN114682405A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1451063A (en) * | 1923-04-10 | Burner | ||
| US4625916A (en) * | 1983-07-16 | 1986-12-02 | Lechler Gmbh & Co., Kg | Cylindrical inset for a binary atomizing nozzle |
| JP2002159889A (en) * | 2000-11-24 | 2002-06-04 | Ikeuchi:Kk | Two-fluid nozzle |
| CN101287555A (en) * | 2005-10-07 | 2008-10-15 | 迪特尔·沃尔兹 | Atomizing nozzle for two substances |
| WO2007080084A1 (en) * | 2006-01-09 | 2007-07-19 | Dieter Wurz | Two-component nozzle |
| CN201807473U (en) * | 2010-07-09 | 2011-04-27 | 中冶京诚工程技术有限公司 | Novel gas spray nozzle without gas resistance |
| CN205413411U (en) * | 2016-03-21 | 2016-08-03 | 深圳市华兴四海机械设备有限公司 | Two -fluid spray tube |
| CN110805512A (en) * | 2018-08-05 | 2020-02-18 | 大连理工大学 | Nozzle with torsional composite hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220701 |
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| RJ01 | Rejection of invention patent application after publication |