CN111911465B - Distributed binary spray pipe ejector device - Google Patents
Distributed binary spray pipe ejector device Download PDFInfo
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- CN111911465B CN111911465B CN202010938267.0A CN202010938267A CN111911465B CN 111911465 B CN111911465 B CN 111911465B CN 202010938267 A CN202010938267 A CN 202010938267A CN 111911465 B CN111911465 B CN 111911465B
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- energy fluid
- spray pipe
- inlet section
- fluid inlet
- ejector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
- F04F5/463—Arrangements of nozzles with provisions for mixing
Abstract
The invention discloses a distributed binary nozzle ejector device. The device adopts a pipeline connection mode and sequentially comprises a low-energy fluid inlet section, a high-energy fluid inlet section and a mixed fluid outlet section which are sequentially connected; the binary spray pipe ejector is arranged in the pipeline near the high-energy fluid inlet section; the surface of the high-energy fluid inlet section is provided with a through hole which is communicated with an externally connected high-pressure tank; the low-energy fluid inlet section, the high-energy fluid inlet section and the mixed fluid outlet section are concentric with a central shaft; the binary spray pipe ejector comprises linear spray pipe unit bodies which are arranged in parallel, the spray pipe unit bodies are connected through reinforcing ribs, part of the reinforcing ribs are of a hollow structure, and high-energy fluid enters the spray pipe unit bodies from through holes of an inlet section of the high-energy fluid and is sprayed out from outlets of the spray pipe unit bodies; the spray pipe unit body is internally provided with a spray pipe. The device is suitable for the fluid ejection control of gas and liquid. The device has improved and has penetrated efficiency, has reduced ejector device overall dimension, has reduced ejector device space installation requirement.
Description
Technical Field
The invention belongs to the technical field of flow control, and particularly relates to a distributed binary nozzle ejector device.
Background
The fluid is a general name of gas and liquid, and most fluids such as oil, water and air are indispensable substances for people's life, production and scientific research. The flow speed of the fluid is high or low, and people usually hope to inject the low-energy fluid through the high-energy fluid, so that the speed of the low-energy fluid is improved, and the flow rate of the low-energy fluid is increased.
In general life and production activities, people have low requirements on the flow speed of fluid, such as tap water, gas stations, heating and natural gas, and the requirements can be met only by certain flow speed and flow. In scientific research, however, people often need to efficiently inject low-energy fluid through high-energy fluid. In a power plant, fuel combustion equipment, a steam boiler water supply system, a steam turbine regulating system and the like need to be provided with different types of ejector devices for ejecting low-energy fluid; in the middle and later period exploitation of natural gas, because the pressure of a gas field is low, an ejector device needs to be additionally arranged to eject the natural gas with relatively low air pressure so as to improve the yield of the natural gas; in a temporary-impulse high-speed wind tunnel, a corresponding ejector device is required to be designed at the downstream of a wind tunnel pipeline to eject upstream airflow, so that the test section airflow can easily meet corresponding design requirements; high-efficiency ejector devices are required to be designed and installed in the pressure recovery systems of the pneumatic laser and the chemical laser. The circular seam ejector is a relatively classic ejector, but the traditional circular seam ejector has the following defects: firstly, the energy and substance exchange area between the high-energy fluid and the low-energy fluid is not large, and the injection efficiency is low; secondly, the mixing speed of the high-energy fluid and the low-energy fluid is low, the required mixing section is longer, and the uniformity of the mixed fluid is poorer; thirdly, the ejector has larger overall dimension, expensive manufacturing and processing cost and complex space installation requirement.
Currently, there is a great need to develop a new ejector device.
Disclosure of Invention
The invention aims to solve the technical problem of providing a distributed binary nozzle ejector device.
The invention relates to a distributed binary nozzle ejector device, which is characterized in that: the binary spray pipe ejector device adopts a pipeline connection mode and sequentially comprises a low-energy fluid inlet section, a high-energy fluid inlet section and a mixed fluid outlet section which are sequentially connected; the binary spray pipe ejector is arranged in the pipeline near the high-energy fluid inlet section; the surface of the high-energy fluid inlet section is provided with a through hole which is communicated with an externally connected high-pressure tank; the low-energy fluid inlet section, the high-energy fluid inlet section and the mixed fluid outlet section are concentric with a central shaft;
the two-dimensional spray pipe ejector comprises linear spray pipe unit bodies which are arranged in parallel, the spray pipe unit bodies are connected through reinforcing ribs, part of the reinforcing ribs are of hollow structures with cavities, and high-energy fluid enters the spray pipe unit bodies from through holes in the inlet section of the high-energy fluid and is sprayed out from outlets of the spray pipe unit bodies;
and the spray pipe unit body is internally provided with a spray pipe.
Furthermore, a binary spray pipe or a binary half spray pipe is arranged in the spray pipe unit body.
Furthermore, the low-energy fluid inlet section is connected with the binary spray pipe ejector in a manner of tightening a cylindrical matching end face, namely the low-energy fluid inlet section is matched with the binary spray pipe ejector in a cylindrical manner in the axial direction, and the end face is connected and fixed by screws.
Furthermore, the low-energy fluid inlet section is connected with the high-energy fluid inlet section through screws which are positioned at the front end of the high-energy fluid inlet section, are uniformly distributed in the circumferential direction and are vertical to the central shaft, and sealing is performed through sealing glue or gaskets; the high-energy fluid inlet section is connected with the mixed fluid outlet section through screws which are positioned at the rear end of the high-energy fluid inlet section and are circumferentially and uniformly distributed and are perpendicular to the central shaft, and the high-energy fluid inlet section is sealed through sealant or a gasket.
Furthermore, an annular channel communicated with the nozzle unit body is arranged in the binary nozzle ejector, and the high-energy fluid enters the annular channel from a through hole of the high-energy fluid inlet section and then is ejected from an outlet of the nozzle unit body.
The cavity between the high-energy fluid inlet section, the nozzle unit body front section and the mixed fluid outlet section front section of the binary nozzle ejector in the distributed binary nozzle ejector device can provide enough storage space for the high-energy fluid.
The binary spray pipe ejector in the distributed binary spray pipe ejector device utilizes the Laval spray pipe principle to spray high-energy fluid introduced from a high-energy fluid inlet section from the outlet of the spray pipe unit body to form high-energy fluid flowing at high speed, namely ejection fluid; the low-energy fluid which flows into the cavity between the nozzle unit bodies from the low-energy fluid inlet section and flows through the cavity between the nozzle unit bodies is the injected fluid; the high-energy flow and the low-energy fluid exchange energy and substances in the mixed fluid outlet section, so that the high-energy fluid can inject the low-energy fluid. Moreover, the binary spray pipe ejector in the distributed binary spray pipe ejector device comprises a plurality of linear spray pipe unit bodies which are arranged in parallel, a plurality of approximately parallel high-energy fluid flow areas can be formed, and low-energy fluid between the spray pipe unit bodies and high-energy fluid at the outlets of the spray pipe unit bodies form a plurality of energy and substance exchange areas which are arranged in a staggered mode; the contact surface of the high-energy fluid and the low-energy fluid is increased, the mixing degree of the high-energy fluid and the low-energy fluid is improved, the ejection efficiency of the high-energy fluid to the low-energy fluid is improved, and the overall dimension of the ejector is reduced.
The nozzle unit bodies of the binary nozzle ejector in the distributed binary nozzle ejector device are connected through the plurality of reinforcing ribs, wherein the solid reinforcing ribs have the connecting and supporting functions, and the hollow reinforcing ribs can also provide flow channels for high-energy fluid, so that the fluid pressure between the nozzle unit bodies is quickly balanced.
The working process of the distributed binary nozzle ejector device is as follows:
firstly, high-energy fluid is introduced from a through hole of a high-energy fluid inlet section and is stored in a cavity between the high-energy fluid inlet section and the front section of the nozzle unit body and the front section of the mixed fluid outlet section of the binary nozzle ejector; and then, the binary nozzle ejector utilizes the Laval nozzle principle to form staggered distributed high-energy fluid flow areas at the outlets of the nozzle unit bodies arranged in parallel, and exchanges energy and substances with staggered low-energy fluid in the outlet section of the mixed fluid to realize the efficient ejection of the ejected fluid by the ejected fluid. In the rear section of the mixed fluid outlet section, the high-energy fluid and the low-energy fluid are fully mixed to form a relatively uniform fluid; and finally, the mixed fluid enters the expansion section of the mixed fluid outlet section to complete ejection.
The distributed binary nozzle ejector device has the following characteristics:
1. by adopting a 'distributed' design idea, the traditional single annular seam injection is replaced by the distributed binary nozzle injection consisting of the linear nozzle unit bodies arranged in parallel, so that the contact surface of high-energy fluid and low-energy fluid is increased, and the injection efficiency is improved;
2. the distributed binary nozzle ejector has less interference on the upstream low-energy fluid than the traditional annular seam ejector, plays a certain rectification role on the mixed fluid at the downstream of the ejector during ejection, ensures that the mixed fluid is relatively uniform, and reduces the length of the mixing section.
3. The size, the number and the spacing of the nozzle unit bodies in the binary nozzle ejector can be flexibly adjusted according to the space size and the ejection requirement.
4. The reinforcing ribs between the unit bodies of the spray pipes can play a role in connection and support, can also provide flow channels for high-energy fluid, and are favorable for balancing the pressure between the unit bodies of the binary spray pipes rapidly.
5. Due to the fact that the injection efficiency of the binary nozzle ejector is high, under the condition of the same injection capacity requirement, the distributed binary nozzle ejector device is small in overall dimension, and the requirement for installation space is lowered.
The distributed binary nozzle ejector device is suitable for fluid ejection control of gas and liquid. The distributed binary nozzle ejector device increases the mixing degree of energy and material exchange between high-energy fluid and low-energy fluid, improves the uniformity of mixed fluid, improves the ejection efficiency, reduces the overall dimension of the ejector device, and reduces the space installation requirement of the ejector device.
Drawings
FIG. 1 is a schematic structural view (front view) of a distributed binary nozzle eductor apparatus of the present invention;
FIG. 2 is a schematic structural view (cross-sectional view) of the distributed binary nozzle eductor apparatus of the present invention.
In the figure, 1, a low-energy fluid inlet section 2, a high-energy fluid inlet section 3, a binary nozzle ejector 4 and a mixed fluid outlet section.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, the distributed binary nozzle ejector device of the invention adopts a pipeline connection mode, and sequentially comprises a low-energy fluid inlet section 1, a high-energy fluid inlet section 2 and a mixed fluid outlet section 4 which are sequentially connected; the binary spray pipe ejector 3 is arranged in the pipeline near the high-energy fluid inlet section 2; a through hole is formed in the surface of the high-energy fluid inlet section 2 and communicated with an externally connected high-pressure tank; the low-energy fluid inlet section 1, the high-energy fluid inlet section 2 and the mixed fluid outlet section 4 are concentric with a central shaft;
the binary spray pipe ejector 3 comprises linear spray pipe unit bodies which are arranged in parallel, the spray pipe unit bodies are connected through reinforcing ribs, part of the reinforcing ribs are of hollow structures with cavities, and high-energy fluid enters the outlets of the spray pipe unit bodies from through holes of the high-energy fluid inlet section 2 and is sprayed out;
and the spray pipe unit body is internally provided with a spray pipe.
Furthermore, a binary spray pipe or a binary half spray pipe is arranged in the spray pipe unit body.
Further, the low-energy fluid inlet section 1 and the binary spray pipe ejector 3 are connected in a cylindrical surface matching end surface tensioning mode, namely the low-energy fluid inlet section 1 and the binary spray pipe ejector 3 are axially matched in a cylindrical surface mode, and the end surfaces are connected and fixed through screws.
Further, the low-energy fluid inlet section 1 is connected with the high-energy fluid inlet section 2 through screws which are positioned at the front end of the high-energy fluid inlet section 2, are uniformly distributed in the circumferential direction and are perpendicular to the central shaft, and are sealed through sealing glue or gaskets; the high-energy fluid inlet section 2 is connected with the mixed fluid outlet section 4 through screws which are positioned at the rear end of the high-energy fluid inlet section 2 and are circumferentially and uniformly distributed and are perpendicular to the central shaft, and sealing is further performed through sealing glue or gaskets.
Furthermore, an annular channel communicated with the nozzle unit body is arranged in the binary nozzle ejector 3, and the high-energy fluid enters the annular channel from the through hole of the high-energy fluid inlet section 2 and then is ejected from the outlet of the nozzle unit body.
Example 1
The number of the nozzle unit bodies is 8, a binary half nozzle is arranged in each nozzle unit body, the upper half part of each nozzle unit body is provided with 4 nozzle unit bodies, the lower half part of each nozzle unit body is symmetrically distributed with 4 other nozzle unit bodies, the 4 nozzle unit bodies in the upper half part are respectively connected and supported through 1 up-down through hollow reinforcing rib arranged on a symmetrical line, and the 4 nozzle unit bodies in the lower half part are respectively connected and supported through the other 1 symmetrical up-down through hollow reinforcing ribs arranged on the symmetrical line; and an annular channel communicated with each spray pipe unit body is also arranged in the binary spray pipe ejector 3, and the high-energy fluid enters the annular channel from the through hole of the high-energy fluid inlet section 2 and then is sprayed out from the outlets of the spray pipe unit bodies.
The numerical simulation result shows that, compared with the traditional circular seam injection, the distributed binary nozzle injector device of the embodiment has smaller space requirement on the premise of achieving the same injection effect, specifically, the diameter of the pipe section can be reduced by more than 30%, and the length of the pipe section can be reduced by more than 20%.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (3)
1. The utility model provides a distributing type binary spray tube ejector device which characterized in that: the binary spray pipe ejector device adopts a pipeline connection mode and sequentially comprises a low-energy fluid inlet section (1), a high-energy fluid inlet section (2) and a mixed fluid outlet section (4) which are sequentially connected; the binary spray pipe ejector (3) is arranged in the pipeline near the high-energy fluid inlet section (2); a through hole is formed in the surface of the high-energy fluid inlet section (2), and the through hole is communicated with an externally connected high-pressure tank; the low-energy fluid inlet section (1), the high-energy fluid inlet section (2) and the mixed fluid outlet section (4) are concentric with a central shaft;
the binary spray pipe ejector (3) comprises linear spray pipe unit bodies which are arranged in parallel, the spray pipe unit bodies are connected through reinforcing ribs, part of the reinforcing ribs are of hollow structures which are communicated up and down, and high-energy fluid enters the spray pipe unit bodies from through holes of the high-energy fluid inlet section (2) and is sprayed out from outlets of the spray pipe unit bodies;
a binary spray pipe is arranged in the spray pipe unit body;
and an annular channel communicated with the nozzle unit bodies is arranged in the binary nozzle ejector (3), and the high-energy fluid enters the annular channel from the through hole of the high-energy fluid inlet section (2) and then is ejected from the outlet of the nozzle unit bodies.
2. The distributed binary nozzle ejector apparatus of claim 1, wherein: the low-energy fluid inlet section (1) and the binary spray pipe ejector (3) are connected in a mode that the cylindrical surface matching end surface is tensioned, namely the low-energy fluid inlet section (1) and the binary spray pipe ejector (3) are axially matched in a cylindrical surface mode, and the end surfaces are fixedly connected through screws.
3. The distributed binary nozzle ejector apparatus of claim 1, wherein: the low-energy fluid inlet section (1) is connected with the high-energy fluid inlet section (2) through screws which are positioned at the front end of the high-energy fluid inlet section (2), are uniformly distributed in the circumferential direction and are vertical to the central shaft, and sealing is also carried out through sealing glue or gaskets; the high-energy fluid inlet section (2) is connected with the mixed fluid outlet section (4) through screws which are positioned at the rear end of the high-energy fluid inlet section (2) and are circumferentially and uniformly distributed and are perpendicular to the central shaft, and sealing is further performed through sealing glue or gaskets.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010938267.0A CN111911465B (en) | 2020-09-09 | 2020-09-09 | Distributed binary spray pipe ejector device |
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| CN202010938267.0A CN111911465B (en) | 2020-09-09 | 2020-09-09 | Distributed binary spray pipe ejector device |
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| CN111911465A CN111911465A (en) | 2020-11-10 |
| CN111911465B true CN111911465B (en) | 2022-04-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116571371B (en) * | 2023-07-06 | 2023-09-08 | 中国空气动力研究与发展中心高速空气动力研究所 | Ejector device combining distributed two-dimensional spray pipe and traditional circumferential seam |
| CN116538156B (en) * | 2023-07-06 | 2023-09-22 | 中国空气动力研究与发展中心高速空气动力研究所 | Spatially distributed circular seam injector device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB160786A (en) * | 1920-03-26 | 1922-06-08 | Oerlikon Maschf | Improvements in and relating to two-stage steam-operated ejectors |
| JPH04294237A (en) * | 1991-03-22 | 1992-10-19 | Kobe Steel Ltd | Two-dimensional nozzle for supersonic wind tunnel |
| DE19845328A1 (en) * | 1997-10-01 | 1999-06-17 | Kayser Automotive Systems Gmbh | Automotive vacuum system for e.g. fuel tank filters |
| CN102507199A (en) * | 2011-10-27 | 2012-06-20 | 中国航天科技集团公司第四研究院四0一所 | Annular ejector for high altitude environment simulation test |
| CN208417090U (en) * | 2018-06-06 | 2019-01-22 | 中国人民解放军国防科技大学 | Two-dimensional-configuration multi-support-plate ejector |
| CN110608206A (en) * | 2018-06-15 | 2019-12-24 | 北京航空航天大学 | Ejector of quick ejection inflation system for passenger escape |
| CN111288028A (en) * | 2020-04-13 | 2020-06-16 | 中国航空工业集团公司哈尔滨空气动力研究所 | Low-pressure ejector device applied to Mars wind tunnel |
| CN212838645U (en) * | 2020-09-09 | 2021-03-30 | 中国空气动力研究与发展中心高速空气动力研究所 | Distributed binary spray pipe ejector device |
-
2020
- 2020-09-09 CN CN202010938267.0A patent/CN111911465B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB160786A (en) * | 1920-03-26 | 1922-06-08 | Oerlikon Maschf | Improvements in and relating to two-stage steam-operated ejectors |
| JPH04294237A (en) * | 1991-03-22 | 1992-10-19 | Kobe Steel Ltd | Two-dimensional nozzle for supersonic wind tunnel |
| DE19845328A1 (en) * | 1997-10-01 | 1999-06-17 | Kayser Automotive Systems Gmbh | Automotive vacuum system for e.g. fuel tank filters |
| CN102507199A (en) * | 2011-10-27 | 2012-06-20 | 中国航天科技集团公司第四研究院四0一所 | Annular ejector for high altitude environment simulation test |
| CN208417090U (en) * | 2018-06-06 | 2019-01-22 | 中国人民解放军国防科技大学 | Two-dimensional-configuration multi-support-plate ejector |
| CN110608206A (en) * | 2018-06-15 | 2019-12-24 | 北京航空航天大学 | Ejector of quick ejection inflation system for passenger escape |
| CN111288028A (en) * | 2020-04-13 | 2020-06-16 | 中国航空工业集团公司哈尔滨空气动力研究所 | Low-pressure ejector device applied to Mars wind tunnel |
| CN212838645U (en) * | 2020-09-09 | 2021-03-30 | 中国空气动力研究与发展中心高速空气动力研究所 | Distributed binary spray pipe ejector device |
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