CN1300907A - Cyclone injector - Google Patents
Cyclone injector Download PDFInfo
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- CN1300907A CN1300907A CN 99126364 CN99126364A CN1300907A CN 1300907 A CN1300907 A CN 1300907A CN 99126364 CN99126364 CN 99126364 CN 99126364 A CN99126364 A CN 99126364A CN 1300907 A CN1300907 A CN 1300907A
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- cavity
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- medium inlet
- injection medium
- injection
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Abstract
A cyclone injector is composed of diffuser cavity, mixer cavity and medium introducing-in cavity from bottom to top, which are concentric. The arc blades are linked to the edges of upper and lower diffuser disk for said diffuser cavity. The mixer cavity is linked to ring opening of upper diffuser piece and the medium introducing-in cavity is placed above the mixer cavity. A ring partition is used to divide the medium introducing-in cavity into injecting medium inlet cavity and injected medium inlet cavity. The nozzles are tangently arranged the periphery of partion surface. The incident tubes communicated respectively with said medium inlet cavities are arranged on sides of medium introducing-in cavity.
Description
The present invention relates to a kind of is the ejector of basic principle with flowing medium rotating centrifugal diffusion, particularly a kind of cyclone injector that is used for aircraft ground test equipment exhaust injection, steam turbine exhaust casing injection, laser exhaust injection based on this principle.
The working principle of cyclone injector is: in the tangential ejection at a high speed of circumference, the driven fluid medium forms vortex motion around driving with flowing medium, and outwards the rotational flow diffusion enters the external world under action of centrifugal force.Because action of centrifugal force forms low pressure area in the centre area, realize injection to the flowing medium of center inflow.
At present, adopt single-stage or multistage straight tube jet ejector to solve the exhaust injection problem of the said equipment usually.As document 1: " practical gas dynamics " { (Soviet Union) A Bola Abramovich work, Liang Xiuyan translate, Higher Education Publishing House, in July, 1955 Beijing front page, in February, 1957 Beijing second impression } and document 2: " engineering gas dynamics " { (Soviet Union) Jie Yiqi shows, Xu Huafang translates, fuel industry publishing house, in November, 1955 Beijing front page } made detailed introduction to the calculating principle and the design of straighttube-type ejector.The straight tube jet ejector is by hollow straight type pipe and axially be positioned over the one or more superonic flow nozzzles in the hollow straight type tube cavity and constitute.The basic functional principle of this straight tube jet ejector be the injection medium with penetrated from nozzle by the identical pressure of injection medium, have very high flowing velocity.Injection medium and mixed and Momentum Transfer through mixing section by the injection medium.Mixed medium after Momentum Transfer still has very high flowing velocity; Simultaneously for satisfy boost the mass flow rate that requires the injection medium must be much larger than by the mass flow rate of injection medium; The high-speed mixing medium must can enter the external world through the shock wave diffusion.Therefore, the shock wave process is indispensable to the straighttube-type jet ejector.But this process must cause a large amount of pitot losss.The working principle of straighttube-type jet ejector has just determined it that higher efficient can not be arranged.Therefore, the straight tube jet ejector is very big to the consumption of driving fluid medium.Noise is very big in gas mixed process simultaneously.
The objective of the invention is to: overcome above-mentioned straight tube jet ejector technically intrinsic diffusion loss big, big and the big defective of noise of injection dielectric dissipation amount, is principle and provide a kind of with the centrifugal force diffusion, realizes the cyclone injector of the diffusion process of no normal shock wave under the effect of rotary centrifugal force.
Embodiment of the present invention are as follows:
Cyclone injector provided by the invention, it is characterized in that: comprise the rotational flow field diffusion cavity of from bottom to top placing with one heart successively, mixing chamber and the medium that constitutes by chamber, injection medium inlet and by chamber, injection medium inlet import cavity, rotational flow field diffusion cavity is by in the parallel placement about in the of two, following diffusion dish and being connected, guiding arc shaped blade on the following diffusion plate edge or attachment post constitute, last diffusion dish is a ring segment, connect the hollow cylinder mixing chamber on its annular port, hollow cylinder mixing chamber upper ends imports cavity by chamber, injection medium inlet with by the medium that chamber, injection medium inlet is formed, it is hollow annular disc that medium imports cavity, one ring dividing plate is divided into chamber, injection medium inlet parallel about in the of two with it and by chamber, injection medium inlet, air-flow tangent direction along dividing plate upper surface periphery is provided with driving nozzle, driving nozzle is a curved nozzle, the dividing plate of its back is provided with the hole (not shown) that communicates with driving nozzle, import at medium on the outer side surface of cavity, one side is provided with the incident pipe that communicates with chamber, injection medium inlet, and opposite side is provided with and the incident pipe that is communicated by chamber, injection medium inlet; Described driving nozzle is Laval nozzle or shrinks the shape nozzle that its quantity is 3-20; Described guiding arc shaped blade be shaped as curved surface of column shape or flexure plane shape, its quantity is 0-36.
Working procedure of the present invention is as follows:
Be connected by the incident pipe with by the injection medium source by chamber, injection medium inlet, chamber, injection medium inlet is connected by incident pipe and injection medium source, injection medium in the injection medium source enters the curvilinerar figure driving nozzle by its incident pipe by the hole (not shown) that is positioned on the driving nozzle rear baffles, be blown into the mixed zone of mixing chamber at a high speed along the tangent to periphery direction by driving nozzle, the injection medium communicates with chamber, injection medium inlet by the hole of driving nozzle and its rear baffles, in the mixed zone of mixing chamber, injection medium and carried out the transmission of momentum and energy by the injection medium, two media is high speed rotating under the condition of equipressure, form rotational flow field, abundant mixed mixed medium rotates on one side in the diffusion district of rotational flow field diffusion cavity, outwards flow on one side, under action of centrifugal force, pressure increases gradually, and by the arcuate guide blade mixed medium is transferred, and its pressure is able to further increase, reach ambient pressure and get rid of the external world, and finish injection.
Advantage of the present invention:
1. because the present invention has adopted the centrifugal pressure expanding principle, have the characteristics of unshock, high pressure ratio diffusion, therefore compare, have and more draw high ejector capacity with common straight tube jet ejector;
2. under the situation that reaches same injection requirement, owing to the diffusion unshock, so can significantly reduce the consumption of injection medium;
3. noise is lower;
4. because the mixed zone is short, so its compact structure, size are less than the straight tube jet ejector.
Further describe the present invention below in conjunction with drawings and Examples:
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is a kind of embodiment's schematic representation of arcuate guide blade;
Wherein:
Rotational flow field diffusion cavity C, mixing chamber B medium import cavity A
Chamber, injection medium inlet 1 by chamber, injection medium inlet 2 by injection medium inlet 3
Driving nozzle exports 5 diffusion districts 6,4 mixed zones
Diffusion dish 10 on the arcuate guide blade 7 incident pipes 8,9
Following diffusion dish 11 dividing plates 12 medium driving nozzles 13
As shown in Figure 1, cyclone injector provided by the invention, it is characterized in that: comprise the rotational flow field diffusion cavity C that from bottom to top places with one heart successively, mixing chamber B and the medium that constitutes by chamber, injection medium inlet 2 and by chamber, injection medium inlet 1 import cavity A, rotational flow field diffusion cavity C is by the diffusion dish 10 of parallel placement about in the of two, 11 be connected diffusion dish 10 and following diffusion dish 11 edges on guiding arc shaped blade 7 or attachment post (attachment post only rises and is connected, the effect of following diffusion dish) constitutes, present embodiment guiding arc shaped blade 7 is a curved surface of column shape blade, quantity is 20, last diffusion dish 10 is a ring segment, connect hollow cylinder mixing chamber B on it, hollow cylinder mixing chamber B upper ends imports cavity A by chamber, injection medium inlet 2 with by the medium that chamber, injection medium inlet 1 is formed, it is hollow annular disc that medium imports cavity A, one ring dividing plate 12 is divided into chamber, injection medium inlet 2 parallel about in the of two with it and by chamber, injection medium inlet 1, along on the air-flow tangent direction of dividing plate 12 upper surface peripheries driving nozzle 13 being set, Jie's driving nozzle 13 is a curved nozzle, present embodiment adopts Laval nozzle, can certainly adopt and shrink the shape nozzle; Among Fig. 13 is by the injection medium inlet, 4 is the outlet of driving nozzle 13, the dividing plate 12 of driving nozzle 13 back is provided with the hole (not shown) that communicates with driving nozzle 13, import at medium on the outer side surface of cavity A, one side is provided with 2 the incident pipe 8 of communicating with chamber, injection medium inlet, and opposite side is provided with and the incident pipe 9 that is communicated by chamber, injection medium inlet 1.
Be connected by incident pipe 9 with by the injection medium source by chamber, injection medium inlet 1, chamber, injection medium inlet 2 is connected by incident pipe 8 and injection medium source, injection medium in the injection medium source enters Laval driving nozzle 13 by incident pipe 8 by being positioned at nozzle 13 hole (not shown) afterwards, be blown into the mixed zone 5 of mixed zone cavity B at a high speed along the tangent to periphery direction by driving nozzle 13, the injection medium communicates with chamber, injection medium inlet 2 by the hole of driving nozzle 13 and its rear baffles 12, the 5 injection media and carried out the transmission of momentum and energy by the injection medium in the mixed zone, two media is high speed rotating under the condition of equipressure, form rotational flow field, in the diffusion district 6 of rotational flow field diffusion cavity C, abundant mixed mixed medium rotates on one side, outwards flow on one side, under action of centrifugal force, pressure increases gradually, and transfers by 7 pairs of mixed mediums of guiding arc shaped blade, and its pressure further increases, reach ambient pressure and get rid of the external world, and finish injection.
Vent systems with a low pressure is an example: the exhaust stagnation pressure of this system is 4276 Pascals, the second flow amount of gas is 105.2 cubic metres, realize injection to this low pressure exhaust system, on the rotational flow field diffusion cavity C of the present invention, following diffusion dish 10,2.4 meters of 11 external diameters, spacing between the diffusion dish 10 and 11 is 0.35 meter, 6 driving nozzles 13 of dividing plate upper edge circumference tangential direction distribution of medium introduction chamber A, the injection medium is combustion gas, the Mach 2 ship 5.9 of driving nozzle 13 outlets, pressure 10 megapascal (MPa)s of injection source of the gas, temperature 2040K, the injection gas flow needs 1.57 kilograms of per seconds, and cyclone injector provided by the invention can satisfy its injection requirement fully.
In addition, through experiment, in this vent systems, when driving nozzle 13 is 3 or 20, when guiding arc shaped blade 7 is 0 (this moment, upper and lower diffusion dish adopted cylindrical attachment post to connect) or 36, also can satisfy the injection requirement.
Claims (3)
1. cyclone injector, it is characterized in that: comprise the rotational flow field diffusion cavity of from bottom to top placing with one heart successively, mixing chamber and the medium that constitutes by chamber, injection medium inlet and by chamber, injection medium inlet import cavity, rotational flow field diffusion cavity is by in the parallel placement about in the of two, following diffusion dish and being connected, guiding arc shaped blade on the following diffusion plate edge or attachment post constitute, last diffusion dish is a ring segment, connect the hollow cylinder mixing chamber on its annular port, hollow cylinder mixing chamber upper ends imports cavity by chamber, injection medium inlet with by the medium that chamber, injection medium inlet is formed, it is hollow annular disc that medium imports cavity, one ring dividing plate is divided into chamber, injection medium inlet parallel about in the of two with it and by chamber, injection medium inlet, air-flow tangent direction along dividing plate upper surface periphery is provided with driving nozzle, driving nozzle is a curved nozzle, the dividing plate of its back is provided with the hole that communicates with driving nozzle, import at medium on the outer side surface of cavity, one side is provided with the incident pipe that communicates with chamber, injection medium inlet, and opposite side is provided with and the incident pipe that is communicated by chamber, injection medium inlet.
2. by the described cyclone injector of claim 1, it is characterized in that: described driving nozzle is Laval nozzle or shrinks the shape nozzle that its quantity is 3-20.
3. by the described cyclone injector of claim 1, it is characterized in that: described guiding arc shaped blade is for being shaped as curved surface of column shape or flexure plane shape, and its quantity is 1-36.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99126364 CN1300907A (en) | 1999-12-17 | 1999-12-17 | Cyclone injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99126364 CN1300907A (en) | 1999-12-17 | 1999-12-17 | Cyclone injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1300907A true CN1300907A (en) | 2001-06-27 |
Family
ID=5284421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99126364 Pending CN1300907A (en) | 1999-12-17 | 1999-12-17 | Cyclone injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1300907A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672891A (en) * | 2012-08-31 | 2014-03-26 | 阿尔斯通技术有限公司 | Premix burner |
| CN106594725A (en) * | 2015-10-14 | 2017-04-26 | 吴成年 | Burner with multiple-pressurizing and mixing device |
| CN111550475A (en) * | 2020-03-27 | 2020-08-18 | 中国航天空气动力技术研究院 | Reverse T-shaped concave cavity structure for transition control of boundary layer |
-
1999
- 1999-12-17 CN CN 99126364 patent/CN1300907A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672891A (en) * | 2012-08-31 | 2014-03-26 | 阿尔斯通技术有限公司 | Premix burner |
| CN103672891B (en) * | 2012-08-31 | 2016-10-05 | 通用电器技术有限公司 | Premix burner |
| CN106594725A (en) * | 2015-10-14 | 2017-04-26 | 吴成年 | Burner with multiple-pressurizing and mixing device |
| CN111550475A (en) * | 2020-03-27 | 2020-08-18 | 中国航天空气动力技术研究院 | Reverse T-shaped concave cavity structure for transition control of boundary layer |
| CN111550475B (en) * | 2020-03-27 | 2021-12-07 | 中国航天空气动力技术研究院 | Reverse T-shaped concave cavity structure for transition control of boundary layer |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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