CN107261873B - Pipeline fluid mixer structure - Google Patents
Pipeline fluid mixer structure Download PDFInfo
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- CN107261873B CN107261873B CN201710488202.9A CN201710488202A CN107261873B CN 107261873 B CN107261873 B CN 107261873B CN 201710488202 A CN201710488202 A CN 201710488202A CN 107261873 B CN107261873 B CN 107261873B
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- Prior art keywords
- main fluid
- mixer
- pipeline
- fluid
- fluid inlet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/32—Injector mixers wherein the additional components are added in a by-pass of the main flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
- F23K5/007—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/501—Mixing combustion ingredients, e.g. gases, for burners or combustion chambers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The utility model provides a pipeline fluid mixer structure, including main fluid pipeline, the blender body, main fluid pipeline is including the main fluid entry end that communicates in proper order, the inner chamber, mixed fluid exit end, the blender body is including the secondary fluid entry end that communicates in proper order, the blender cavity, the exit end stretches into in the inner chamber of main fluid pipeline by the lateral wall of main fluid pipeline, and main fluid inlet has been seted up on the pipe wall of exit end, a plurality of side through-holes that are used for discharging premixed fluid, main fluid inlet sets up towards main fluid entry end, the side through-hole all sets up and distributes the both sides of main fluid inlet towards the inner wall of inner chamber. The design is small in pressure loss, low in processing cost and high in mixing efficiency.
Description
Technical Field
The utility model belongs to the technical field of fluid mixing, and particularly relates to a pipeline fluid mixer structure which is suitable for mixing gas, EGR (exhaust gas Recirculation) and other gases or other fluids.
Background
The fluid mixer is mainly used for mixing two fluids as uniformly as possible in a desired ratio, such as air and gas mixing for a gas engine, air and EGR gas mixing for a diesel engine or a gasoline engine. In the case of the pipe fluid mixer, since the flow rate, the flow velocity and the pressure are different among different fluids from different pipes, mixing unevenness is easily caused under the influence of each other, and the mixing efficiency is affected by unstable flow velocity, flow rate and the like.
Chinese patent: the utility model patent with the authority bulletin number of CN203452934U and the authority bulletin day of 2014 and 2 month and 26 days discloses an EGR (exhaust gas recirculation) mixer of an EGR (exhaust gas recirculation) diesel engine, which comprises a mixer inner cavity and a mixer, wherein one end of the mixer inner cavity is a natural air inlet, the other end of the mixer inner cavity is a mixed gas outlet, mixer holes are uniformly formed in the annular outer wall of the mixer, and the mixer holes are obliquely distributed array holes. According to the structure, a large number of array holes are formed, fluid in a tube can flow out of each array hole evenly, and mixing uniformity is improved. However, further studies have shown that under the action of the main conduit fluid, a large amount of main fluid may enter the mixer tube from the array holes, impinge on the fluid to be mixed in the mixer, causing the fluid to be mixed to aggregate, resulting in lower mixing efficiency. In addition, from the processing point of view, a large number of array holes cause the processing difficulty to be increased, and the processing amount and the processing cost are also obviously increased.
Disclosure of Invention
The utility model aims to solve the problems of large pressure loss, poor mixing effect and high processing cost in the prior art and provides a pipeline fluid mixer structure with small pressure loss, high mixing efficiency and low processing cost.
In order to achieve the above object, the technical scheme of the present utility model is as follows:
the utility model provides a pipeline fluid mixer structure, includes main fluid pipeline, blender body, main fluid pipeline includes main fluid entry end, mixed fluid exit end, the blender body includes secondary fluid entry end, blender cavity, the exit end that communicates in proper order, the exit end stretches into main fluid pipeline's inner chamber from main fluid pipeline's lateral wall, and set up the main fluid import of intercommunication blender cavity, inner chamber on the pipe wall of blender body;
the main fluid inlet is arranged towards the main fluid inlet end, a plurality of side through holes for discharging premixed fluid are formed in the pipe wall of the outlet end, and the side through holes are arranged towards the inner wall of the inner cavity and are distributed on two sides of the main fluid inlet.
The side through holes are uniform in structure and are uniformly and symmetrically distributed on two sides of the main fluid inlet.
The main fluid inlet comprises an opening structure positioned above the side through holes, and the opening structure is a hole-shaped or radially extending square groove structure.
The main fluid inlet comprises a hole-shaped part and a square groove part, the hole-shaped part is positioned above the side through hole, the top end of the square groove part is communicated with the bottom of the hole-shaped part, and the bottom end of the square groove part axially extends to the end face near the outlet end.
The main fluid inlet is of a square groove structure, the top end of the main fluid inlet is located above the side through hole, and the bottom end of the main fluid inlet axially extends to the near end face.
The height of the part of the mixer body extending into the inner cavity is larger than the radius of the inner cavity, and the inner diameter of the mixer cavity is smaller than or equal to the inner diameter of the inner cavity.
The included angle formed by the central axis of the mixer body and the central axis of the main fluid pipeline is 45-90 degrees.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the pipeline fluid mixer structure, the main fluid inlet is arranged towards the main fluid inlet end, the pipe wall of the outlet end is provided with the plurality of side through holes for discharging the premixed fluid, the side through holes are arranged towards the inner wall of the inner cavity and distributed on two sides of the main fluid inlet, namely, outlets of the premixed fluid are arranged on two sides of the mixer body. Therefore, the utility model has the advantages of small pressure loss, low processing cost and high mixing efficiency.
2. The main fluid inlet in the pipeline fluid mixer structure comprises the opening structure positioned above the side through hole, and the main fluid inlet is additionally arranged at the upstream of the side through hole, so that the area of the main fluid inlet can be increased under the condition that the lateral incision opening space is not influenced, and the premixing effect of main fluid and secondary fluid is effectively improved. Therefore, the utility model can obtain better premixing effect.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a view in the direction a of fig. 1.
Fig. 3 is a schematic structural view of the mixer body in example 1.
Fig. 4 is a view in the direction a of fig. 3.
Fig. 5 is a schematic structural view of the mixer body in example 2.
Fig. 6 is a view in the direction a of fig. 5.
Fig. 7 is a schematic structural view of a mixer body in embodiment 3.
Fig. 8 is a view in the a direction of fig. 7.
Fig. 9 is a schematic view showing the structure of a mixer body in example 4.
Fig. 10 is a view in the direction a of fig. 9.
In the figure: the main fluid pipe 1, the main fluid inlet end 11, the mixed fluid outlet end 12, the inner cavity 13, the mixer body 2, the secondary fluid inlet end 21, the mixer cavity 22, the outlet end 23, the main fluid inlet 231, the side through holes 232, the end face 233, the hole-like portion 3, the square groove portion 4.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 10, a pipeline fluid mixer structure comprises a main fluid pipeline 1 and a mixer body 2, wherein the main fluid pipeline 1 comprises a main fluid inlet end 11 and a mixed fluid outlet end 12, the mixer body 2 comprises a secondary fluid inlet end 21, a mixer cavity 22 and an outlet end 23 which are sequentially communicated, the outlet end 23 extends into an inner cavity 13 of the main fluid pipeline 1 from the side wall of the main fluid pipeline 1, and a main fluid inlet 231 which is communicated with the mixer cavity 22 and the inner cavity 13 is formed in the pipe wall of the mixer body 2;
the main fluid inlet 231 is disposed towards the main fluid inlet end 11, a plurality of side through holes 232 for discharging the premixed fluid are formed in the pipe wall of the outlet end 23, and the side through holes 232 are disposed towards the inner wall of the inner cavity 13 and are distributed on two sides of the main fluid inlet 231.
The plurality of side through holes 232 are uniform in structure and are uniformly and symmetrically distributed on both sides of the main fluid inlet 231.
The main fluid inlet 231 includes an opening structure above the first and second lateral cuts 232 and 233, and the opening structure is a hole-shaped or radially extending square groove structure.
The main fluid inlet 231 comprises a hole-shaped part 3 and a square groove part 4, the hole-shaped part 3 is positioned above the side through hole 232, the top end of the square groove part 4 is communicated with the bottom of the hole-shaped part 3, and the bottom end of the square groove part 4 axially extends to the end surface 233 near the outlet end 23.
The main fluid inlet 231 has a square groove structure, the top end of which is located above the side through hole 232, and the bottom end of which extends axially to the proximal end surface 233.
The height of the part of the mixer body 2 extending into the inner cavity 13 is larger than the radius of the inner cavity 13, and the inner diameter of the mixer cavity 22 is smaller than or equal to the inner diameter of the inner cavity 13.
The included angle formed by the central axis of the mixer body 2 and the central axis of the main fluid pipeline 1 is 45-90 degrees.
The principle of the utility model is explained as follows:
the utility model provides a pipeline fluid mixer structure with small pressure loss, good mixing effect and simple structure, through the combination of the premixing strategy and the side surface openings, the flow path and the direction of the premixed fluid are changed, the time for the primary mixing of the main fluid and the secondary fluid in the mixer cavity 22 is increased, the mixing efficiency is effectively improved, and the dispersion degree of the outflow of the premixed fluid in the mixer can be increased by the side surface openings, so that the mixing efficiency is further improved. Meanwhile, the utility model controls the insertion direction of the mixer body 1 and the flow direction of the main fluid within a certain angle range, which is beneficial to reducing the flow of the secondary fluid in the mixer cavity 22.
Example 1:
referring to fig. 1 to 4, a pipeline fluid mixer assembly comprises a main fluid pipeline 1 and a mixer body 2, wherein the main fluid pipeline 1 comprises a main fluid inlet end 11, an inner cavity 13 and a mixed fluid outlet end 12 which are sequentially communicated, the mixer body 2 comprises a secondary fluid inlet end 21, a mixer cavity 22 and an outlet end 23 which are sequentially communicated, the outlet end 23 extends into the inner cavity 13 from the side wall of the main fluid pipeline 1, a central axis of the outlet end 23 forms an included angle of 45 degrees with the central axis of the main fluid pipeline 1, a main fluid inlet 231 and a plurality of side through holes 232 for discharging premixed fluid are formed in the pipe wall of the outlet end 23, the main fluid inlet 231 is of a square groove structure which is arranged towards the main fluid inlet end 11, the top end of the main fluid inlet is located above the side through holes 232, the bottom end of the main fluid inlet is axially extended to the end surface 233 of the near the outlet end 23, the side through holes 232 are uniformly and symmetrically distributed on two sides of the inner cavity, the height of the part of the mixer body 2 extending into the inner cavity 13 is larger than the radius of the inner cavity 13, and the inner diameter of the inner cavity 22 of the mixer body is smaller than the inner cavity 13.
Example 2:
referring to fig. 1, 2, 5 and 6, a pipe fluid mixer assembly is different from embodiment 1 in the structure:
the main fluid inlet 231 comprises a hole-shaped part 5 and a square groove part 6, the hole-shaped part 5 is positioned above the first lateral incision 232 and the second lateral incision 233, the top end of the square groove part 6 is communicated with the bottom of the hole-shaped part 5, and the bottom end of the square groove part 6 axially extends to the position of the proximal end face 234.
Example 3:
referring to fig. 1, 2, 7 and 8, a pipe fluid mixer assembly is different from embodiment 1 in the structure:
the main fluid inlet 231 is a hole-like structure located above the first and second lateral cuts 232, 233.
Example 4:
referring to fig. 1, 2, 9 and 10, a pipe fluid mixer assembly is different from embodiment 3 in the structure:
the main fluid inlet 231 is a square groove structure located above the first lateral incision 232 and the second lateral incision 233 and extending radially.
In order to examine the mixing effect of the structure of the present utility model, based on a certain engine, air is the main fluid and EGR exhaust gas is the secondary fluid, the device described in embodiment 1 and embodiment 4 of the present utility model and the comparative device 1 were tested for outlet uniformity, pressure loss and intake loss under the same working conditions. The mixer body in the comparative device 1 adopts a structure in which through holes are uniformly distributed around the circumference of the wall of the outlet end pipe, and the area of the main fluid inlet 231 in embodiment 4 is smaller than that in embodiment 1. The detection results are shown in Table 1:
table 1 mixing performance test results for mixer assemblies
In the above table, the pressure loss refers to the pressure loss on the EGR exhaust gas side, and the intake air loss refers to the pressure loss on the air side. The greater the exit uniformity, the higher the mixing efficiency.
As can be seen from the above data,
1. compared with the existing structure (comparison device 1) with uniformly distributed through holes in the circumference, the device can obtain higher mixing efficiency and smaller pressure loss.
2. Increasing the area of the primary fluid inlet 231 may improve mixing efficiency to some extent.
Claims (3)
1. The utility model provides a pipeline fluid mixer structure, includes main fluid pipeline (1), blender body (2), main fluid pipeline (1) include main fluid entry end (11), mixed fluid exit end (12), blender body (2) are including secondary fluid entry end (21), blender cavity (22), the exit end (23) that communicate in proper order, exit end (23) are stretched into in inner chamber (13) of main fluid pipeline (1) by the lateral wall of main fluid pipeline (1), and offered main fluid import (231) of intercommunication blender cavity (22), inner chamber (13) on the pipe wall of blender body (2), its characterized in that:
the main fluid inlet (231) is arranged towards the main fluid inlet end (11), a plurality of side through holes (232) for discharging the premixed fluid are formed in the pipe wall of the outlet end (23), and the side through holes (232) are arranged towards the inner wall of the inner cavity (13) and distributed on two sides of the main fluid inlet (231);
the main fluid inlet (231) comprises a hole-shaped part (3) and a square groove part (4), the hole-shaped part (3) is positioned above the side through hole (232), the top end of the square groove part (4) is communicated with the bottom of the hole-shaped part (3), and the bottom end of the square groove part (4) axially extends to an end face (233) near the outlet end (23);
the included angle formed by the central axis of the mixer body (2) and the central axis of the main fluid pipeline (1) is 45-90 degrees.
2. A pipe fluid mixer arrangement according to claim 1, wherein: the plurality of side through holes (232) are uniform in structure and are uniformly and symmetrically distributed on two sides of the main fluid inlet (231).
3. A pipe fluid mixer arrangement according to claim 1 or 2, characterized in that: the height of the part of the mixer body (2) extending into the inner cavity (13) is larger than the radius of the inner cavity (13), and the inner diameter of the mixer cavity (22) is smaller than or equal to the inner diameter of the inner cavity (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710488202.9A CN107261873B (en) | 2017-06-23 | 2017-06-23 | Pipeline fluid mixer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710488202.9A CN107261873B (en) | 2017-06-23 | 2017-06-23 | Pipeline fluid mixer structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107261873A CN107261873A (en) | 2017-10-20 |
| CN107261873B true CN107261873B (en) | 2023-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710488202.9A Active CN107261873B (en) | 2017-06-23 | 2017-06-23 | Pipeline fluid mixer structure |
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| Country | Link |
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| CN (1) | CN107261873B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108686527A (en) * | 2018-06-29 | 2018-10-23 | 东风商用车有限公司 | A kind of fluid circuit assembly |
| CN108686529A (en) * | 2018-06-29 | 2018-10-23 | 东风商用车有限公司 | A kind of shell-and-tube flow mixer assembly |
| CN108686530B (en) * | 2018-06-29 | 2024-04-09 | 东风商用车有限公司 | Asymmetric fluid pipeline assembly |
| WO2022002064A1 (en) * | 2020-06-30 | 2022-01-06 | Ceres Intellectual Property Company Limited | Heat balance mixer and sofc system comprising the same |
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| US5865537A (en) * | 1995-10-05 | 1999-02-02 | Sulzer Chemtech Ag | Mixing device for mixing a low-viscosity fluid into a high-viscosity fluid |
| CN101137868A (en) * | 2005-03-09 | 2008-03-05 | 阿尔斯通技术有限公司 | Premix burner for producing an ignitable fuel/air mixture |
| WO2011059417A1 (en) * | 2009-11-10 | 2011-05-19 | Utc Power Corporation | Pressurized premixing of gases in an injector |
| JP2012055872A (en) * | 2010-09-13 | 2012-03-22 | Mitsubishi Heavy Ind Ltd | Mixer for two fluids with different temperatures |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2548036Y2 (en) * | 1991-01-25 | 1997-09-17 | アイシン精機株式会社 | Exhaust gas recirculation device |
| JP2000213681A (en) * | 1999-01-27 | 2000-08-02 | Toshiba Corp | Fluid mixing coupler |
| DE19945769A1 (en) * | 1999-09-24 | 2001-03-29 | Mann & Hummel Filter | Fluid introduction for a hot fluid in a cavity structure |
| US7740008B2 (en) * | 2007-10-23 | 2010-06-22 | International Engine Intellectual Property Company, Llc | Multiple height fluid mixer and method of use |
| EP2133548B1 (en) * | 2008-06-12 | 2019-06-12 | Perkins Engines Company Limited | Gas Mixing system |
| FR2945963A1 (en) * | 2009-05-27 | 2010-12-03 | Mark Iv Systemes Moteurs Sa | DEVICE FOR INJECTING AND DIFFUSING GASEOUS FLUID AND ADMISSION DISTRIBUTION INTEGRATING SUCH A DEVICE |
| US8757133B2 (en) * | 2012-08-27 | 2014-06-24 | Cummins Intellectual Property, Inc. | Gaseous fuel and intake air mixer for internal combustion engine |
| CN206935149U (en) * | 2017-06-23 | 2018-01-30 | 东风商用车有限公司 | A kind of pipeline fluid mixer structure |
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2017
- 2017-06-23 CN CN201710488202.9A patent/CN107261873B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5865537A (en) * | 1995-10-05 | 1999-02-02 | Sulzer Chemtech Ag | Mixing device for mixing a low-viscosity fluid into a high-viscosity fluid |
| CN101137868A (en) * | 2005-03-09 | 2008-03-05 | 阿尔斯通技术有限公司 | Premix burner for producing an ignitable fuel/air mixture |
| WO2011059417A1 (en) * | 2009-11-10 | 2011-05-19 | Utc Power Corporation | Pressurized premixing of gases in an injector |
| JP2012055872A (en) * | 2010-09-13 | 2012-03-22 | Mitsubishi Heavy Ind Ltd | Mixer for two fluids with different temperatures |
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| CN107261873A (en) | 2017-10-20 |
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