CN203837917U - Cone wall hole type non-isothermal air inlet mixing device - Google Patents
Cone wall hole type non-isothermal air inlet mixing device Download PDFInfo
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- CN203837917U CN203837917U CN201420165776.4U CN201420165776U CN203837917U CN 203837917 U CN203837917 U CN 203837917U CN 201420165776 U CN201420165776 U CN 201420165776U CN 203837917 U CN203837917 U CN 203837917U
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- 238000002156 mixing Methods 0.000 title claims abstract description 151
- 230000000694 effects Effects 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 101100433727 Caenorhabditis elegans got-1.2 gene Proteins 0.000 description 1
- 241001347978 Major minor Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model relates to a cone wall hole type non-isothermal air inlet mixing device comprising auxiliary air inlet sections (1), auxiliary air inlet cavities (2), a main air inlet section (3), a mixing cone section (4), an auxiliary mixing section (5), a mixing grid (6), a main air inlet port (7), auxiliary air inlet ports (8), and a mixing outlet (9). The mixing device is a straight section type main air inlet and mixing main body which is composed of the main air inlet port (7), the main air inlet section (3), the mixing cone section (4), the auxiliary mixing section (5), the mixing grid (6) and the mixing outlet (9). The periphery of the mixing cone section (4) is provided with a circle of auxiliary air inlet cavities (2) for surrounding the mixing cone section (4) in the circumferential direction. The auxiliary air inlet cavities (2) are provided with the auxiliary air inlet sections (1) and the auxiliary air inlet ports (8) in a direction which is vertical to the main air inlet section (3). According to the air inlet mixing device of the utility model, two airflows which flow into the device and have different temperatures are mixed in the middle mixing pipe section, and an uniform flow field having the required temperature is obtained at the outlet of the mixing device.
Description
Technical field
The utility model relates to a kind of not isothermal air inlet mixing device.
Background technology
Isothermal air inlet mixing device does not belong to certain Aero Engine Testing device gas handling system register, according to the key technical indexes of exerciser and the supply air line source of the gas parameter under source of the gas air-suction state, design cone pitting is isothermal air inlet mixing device not, for testpieces provides the air inlet of certain parameter, to meet the required temperature field requirement of testpieces inlet air flow.According to different pilot project state parameters, select different air inlet pipeline (high temperature, middle temperature, low temperature), the pressurized air of the different pressures temperature that gas supply station is provided is introduced exerciser, test required air is after filter and flow regulation, temperature required to test import by mixing device temperature adjustment, pressurized air enters exerciser through flow metering and after being adjusted to test desired parameters.
Mixing device is a vitals in certain exerciser air-source inflow system, its Main Function is that the air-flow that flows into two bursts of different temperatures is wherein mixed at its mixing section, after high temperature or low temperature mix with middle temperature, thereby the temperature by air after change hot/cold air mass flow change blending, obtains the uniform flow field of required temperature in mixing device outlet.
The engine tester gas handling system mixing device of China has a lot of version according to service condition, new-type utility model cone pitting not isothermal air inlet mixing device adopts cone wall porous bypass type structure, simple for structure, easy manufacture, result of use are good, be domestic initiation at present, in design means and method, than foreign technology, have original creation part.
Utility model content
The purpose of this utility model:
Isothermal air inlet mixing device does not belong to certain Aero Engine Testing device gas handling system, according to the requirement technology index of exerciser and the supply air line source of the gas parameter under source of the gas air-suction state, the cone pitting of design is isothermal air inlet mixing device not, to meet the required temperature field requirement of testpieces inlet air flow, for testpieces provides the air inlet of certain parameter.
The air-flow that flows into two bursts of different temperatures is wherein mixed at its mixing section, after high temperature, low temperature, middle temperature are mixed, thereby by the temperature of air after change hot/cold air mass flow change blending, in mixing device outlet, obtain the uniform flow field of required temperature.
The technical solution of the utility model:
A kind of cone pitting is isothermal air inlet mixing device not, described mixing device comprises secondary air inlet section 1, secondary inlet chamber 2, main air inlet section 3, blending cone section 4, auxiliary blending section 5, blending grid 6, primary air inlet 7, extra-air inlet 8, blending outlet 9, it is characterized in that: mixing device is by primary air inlet 7, main air inlet section 3, blending cone section 4, auxiliary blending section 5, blending grid 6, blending outlet 9 forms main air inlet and the blending agent set of a straight section, in blending cone section 4, there is a circle circumferentially to encase the secondary inlet chamber 2 of blending cone section 4 around, on secondary inlet chamber 2, be provided with secondary air inlet section 1 and extra-air inlet 8 with main air inlet section 3 vertical direction.
Main inlet channel consists of primary air inlet 7, main air inlet section 3, blending cone section 4, and its length is half of blending cone section 4.
Pair inlet channel, by being provided with the secondary inlet chamber 2 of a circle around in blending cone section 4, is provided with secondary air inlet section 1 and extra-air inlet 8 formations with main air inlet section 3 vertical direction on secondary inlet chamber 2; Secondary air inlet section 1 expansion certain taper is connected to secondary inlet chamber 2, and secondary inlet chamber 2 circumferentially encases blending cone section 4.
Blending cone section 4 adopts porous bypass type structure, on it, have the circular hole of many row's certain pore size, between every round, be staggered between two, the quantity of every round changes with the outside dimension increase and decrease of blending cone section 4, total open area sum equates with secondary air inlet section 1 air inlet duct sectional area, and conical section cone angle is by the ratio-dependent of major and minor air inflow.
Auxiliary blending passage consists of auxiliary blending section 5, blending grid 6, blending outlet 9, and length is the twice of blending cone section 4, and internal diameter equates with blending cone section 4 maximum inner diameters; Blending grid 6 is positioned at the rear portion of auxiliary blending passage, and each grid is apart from being determined by the mixing effect requiring.
The beneficial effects of the utility model:
Mixing device is meeting on the basis of the desired inlet condition of test, be operated under barotropic state, the intensity of mixing device is calculated and is carried out according to GB150-1998 < < Steel Pressure Vessels > >.Secondary inlet chamber, blending cone section and upper perforate thereof, sewage draining exit are carried out intensity examining computation, and check the stability of mixing device housing to draw structure.
Mixing device makes the air-flow that flows into two bursts of different temperatures wherein mix at its mixing section, after high temperature or low temperature mix with middle temperature, thereby the temperature by air after change hot/cold air mass flow change blending, obtains the uniform flow field of required temperature in mixing device outlet.
The utility model is simple in structure, only main air inlet section, secondary air inlet section and blending section three parts, consists of, and has processing technology simple, and cost is low, is applicable to manufacturing the mixing device of various sizes, meets the feature that main attached blending air inlet requires.In addition, this device does not have relevant auxiliary equipment and installs simply, has further reduced production cost, has larger using value.
Accompanying drawing explanation
Fig. 1 bores not isothermal air inlet mixing device structural representation of pitting.
Wherein, the secondary air inlet section of 1-, the secondary inlet chamber of 2-, the main air inlet section of 3-, 4-blending cone section, the auxiliary blending section of 5-, 6-blending grid, 7-primary air inlet, 8-extra-air inlet, 9-blending outlet.
Embodiment
Below by embodiment, the utility model is described in further detail:
Refer to accompanying drawing 1, a kind of cone pitting is isothermal air inlet mixing device not, comprises secondary air inlet section 1, secondary inlet chamber 2, main air inlet section 3, blending cone section 4, auxiliary blending section 5, blending grid 6, primary air inlet (7), extra-air inlet 8, blending outlet 9.
Mixing device is for consisting of main air inlet and the blending main body of a straight section primary air inlet 7, main air inlet section 3, blending cone section 4, auxiliary blending section 5, blending grid 6, blending outlet 9, in blending cone section 4, there is a circle circumferentially to encase the secondary inlet chamber 2 of blending cone section 4 around, on secondary inlet chamber 2, be provided with secondary air inlet section 1 and extra-air inlet 8 with main air inlet section 3 vertical direction.
Main inlet channel consists of primary air inlet 7, main air inlet section 3, blending cone section 4, and length is about half of blending cone section 4.
Pair inlet channel, by being provided with the secondary inlet chamber 2 of a circle around in blending cone section 4, is provided with secondary air inlet section 1 and extra-air inlet 8 formations with main air inlet section 3 vertical direction on secondary inlet chamber 2; Secondary air inlet section 1 expansion certain taper is connected to secondary inlet chamber 2, and secondary inlet chamber 2 circumferentially encases blending cone section 4.
Blending cone section 4 adopts porous bypass type structure, on it, have the circular hole of many row's certain pore size, between every round, be staggered between two, the quantity of every round is according to changing with outside dimension, total open area sum equates substantially with secondary air inlet section 1 air inlet duct sectional area, and conical section cone angle is by the ratio-dependent of major and minor air inflow.
Auxiliary blending passage consists of auxiliary blending section 5, blending grid 6, blending outlet 9, and length is the twice of blending cone section 4, and internal diameter equates with blending cone section 4 maximum inner diameters; Blending grid 6 is positioned at the rear portion of auxiliary blending passage, and each grid is apart from being determined by the mixing effect requiring.
Also can to deaden, to trap in air-flow, be greater than the solid-state of certain size or liquid impurities particle according to efficient silk screen fly-ash separator need to be set at the outlet section of mixing device.The quality of silk screen installation quality is directly connected to security of operation, and divisible air mass is conducive to even flow field, also can block the foreign material that come in the pipeline of the place ahead, to guarantee the requirement of testpieces cold air inlet air granularity.When fixing basket strainer, the situation of uneven, single and local pressure can not be there is, and the problem of the aspect such as replacing, cleaning of Air Filter will be considered.
According to service condition, in the situation that flow velocity is slower, mixing effect is fine, and the diameter of mixing device is got 1～1.5 times of the greater in admission line diameter and is advisable, cold air enters mixing device and adopts porous bypass type structure, considers that jet length arranges total open area.
When design mixing device, need to consider coupling, the balance of pipeline crushing.While calculating flow resistance loss, for gas pipeline, because having between glutinousness and air and tube wall, air itself has certain rubbing action, consider that gas density is very little, rising pipeline section static pressure drag losses and acceleration drag losses all can be ignored, when pipeline section drag losses mainly comprises friction causes in air-flow friction loss and airflow passes blending cone section air admission hole like this, the size and Orientation of its flow velocity changes, and produces thus the caused local resistance loss of local eddy currents.Blending air admission hole crushing is larger, but the high and low wet use traffic of blending air inlet is less, and air inlet overall flow rate is slower, can compensate crushing by improving supply gas pressure and flow.
Above-mentioned embodiment has disclosed the not conventional embodiment of isothermal air inlet mixing device of the utility model cone pitting, but is not limited to above-mentioned embodiment, on above-mentioned disclosed basis, can also be improved further.As can be according to inlet condition and exerciser demand, increase secondary gas air intake opening quantity, change blending segment length size, change number of aperture and size in blending vertebra section, the secondary inlet chamber volume of change etc.As applied at elevated temperature has higher requirements to rapidoprint, welding deformation control, machining precision, repair technology, clearance control.The major-minor air inlet blending application that mixing device of the present utility model is different to similar two kinds of temperature, has larger actual application value.
Claims (5)
1. bore not isothermal air inlet mixing device of pitting for one kind, described mixing device comprises secondary air inlet section (1), secondary inlet chamber (2), main air inlet section (3), blending cone section (4), auxiliary blending section (5), blending grid (6), primary air inlet (7), extra-air inlet (8), blending outlet (9), it is characterized in that: mixing device is by primary air inlet (7), main air inlet section (3), blending cone section (4), auxiliary blending section (5), blending grid (6), blending outlet (9) forms main air inlet and the blending agent set of a straight section, in blending cone section (4), there is a circle circumferentially to encase the secondary inlet chamber (2) of blending cone section (4) around, secondary inlet chamber (2) is upper is provided with secondary air inlet section (1) and extra-air inlet (8) with main air inlet section (3) vertical direction.
2. mixing device according to claim 1, is characterized in that: main inlet channel consists of primary air inlet (7), main air inlet section (3), blending cone section (4), and its length is half of blending cone section (4).
3. mixing device according to claim 1, it is characterized in that: secondary inlet channel is by being provided with the secondary inlet chamber (2) of a circle around in blending cone section (4), secondary inlet chamber (2) is upper and main air inlet section (3) vertical direction is provided with secondary air inlet section (1) and extra-air inlet (8) forms; Secondary air inlet section (1) expansion certain taper is connected to secondary inlet chamber (2), and secondary inlet chamber (2) circumferentially encases blending cone section (4).
4. mixing device according to claim 1, it is characterized in that: blending cone section (4) adopts porous bypass type structure, on it, have the circular hole of many row's certain pore size, between every round, be staggered between two, the quantity of every round changes with the outside dimension increase and decrease of blending cone section (4), total open area sum equates with secondary air inlet section (1) air inlet duct sectional area, and conical section cone angle is by the ratio-dependent of major and minor air inflow.
5. mixing device according to claim 1, it is characterized in that: auxiliary blending passage consists of auxiliary blending section (5), blending grid (6), blending outlet (9), length is the twice of blending cone section (4), and internal diameter equates with blending cone section (4) maximum inner diameter; Blending grid (6) is positioned at the rear portion of auxiliary blending passage, and each grid is apart from being determined by the mixing effect requiring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165776.4U CN203837917U (en) | 2014-04-08 | 2014-04-08 | Cone wall hole type non-isothermal air inlet mixing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165776.4U CN203837917U (en) | 2014-04-08 | 2014-04-08 | Cone wall hole type non-isothermal air inlet mixing device |
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| CN203837917U true CN203837917U (en) | 2014-09-17 |
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| CN201420165776.4U Expired - Lifetime CN203837917U (en) | 2014-04-08 | 2014-04-08 | Cone wall hole type non-isothermal air inlet mixing device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374543A (en) * | 2014-11-06 | 2015-02-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Device for studying airflow mixing characteristics |
| CN106237880A (en) * | 2016-09-13 | 2016-12-21 | 中国科学院工程热物理研究所 | A kind of coal mine gas mixing device |
| CN106268385A (en) * | 2015-06-24 | 2017-01-04 | 贵州航空发动机研究所 | A kind of high-temperature fuel gas mixing device |
| CN107576502A (en) * | 2017-08-10 | 2018-01-12 | 中国北方发动机研究所(天津) | A kind of turbocharger test platform combustion chamber with mixing section |
| CN107966297A (en) * | 2017-12-26 | 2018-04-27 | 中国航发四川燃气涡轮研究院 | A kind of inner cone injecting type not isothermal air inlet mixing device |
| CN110940525A (en) * | 2019-12-26 | 2020-03-31 | 北京航天益森风洞工程技术有限公司 | Blending device of multi-strand high-temperature hot gas and cold air for engine test bed |
| CN110940526A (en) * | 2019-12-26 | 2020-03-31 | 北京航天益森风洞工程技术有限公司 | Blending device of single-stranded high-temperature hot gas and cold air for engine test bed |
-
2014
- 2014-04-08 CN CN201420165776.4U patent/CN203837917U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374543A (en) * | 2014-11-06 | 2015-02-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Device for studying airflow mixing characteristics |
| CN106268385A (en) * | 2015-06-24 | 2017-01-04 | 贵州航空发动机研究所 | A kind of high-temperature fuel gas mixing device |
| CN106237880A (en) * | 2016-09-13 | 2016-12-21 | 中国科学院工程热物理研究所 | A kind of coal mine gas mixing device |
| CN107576502A (en) * | 2017-08-10 | 2018-01-12 | 中国北方发动机研究所(天津) | A kind of turbocharger test platform combustion chamber with mixing section |
| CN107576502B (en) * | 2017-08-10 | 2019-11-12 | 中国北方发动机研究所(天津) | A kind of turbocharger test platform combustion chamber with mixing section |
| CN107966297A (en) * | 2017-12-26 | 2018-04-27 | 中国航发四川燃气涡轮研究院 | A kind of inner cone injecting type not isothermal air inlet mixing device |
| CN110940525A (en) * | 2019-12-26 | 2020-03-31 | 北京航天益森风洞工程技术有限公司 | Blending device of multi-strand high-temperature hot gas and cold air for engine test bed |
| CN110940526A (en) * | 2019-12-26 | 2020-03-31 | 北京航天益森风洞工程技术有限公司 | Blending device of single-stranded high-temperature hot gas and cold air for engine test bed |
| CN110940525B (en) * | 2019-12-26 | 2021-08-10 | 北京航天益森风洞工程技术有限公司 | Blending device of multi-strand high-temperature hot gas and cold air for engine test bed |
| CN110940526B (en) * | 2019-12-26 | 2021-09-03 | 北京航天益森风洞工程技术有限公司 | Blending device of single-stranded high-temperature hot gas and cold air for engine test bed |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 999, Xuefu Road, Xindu, Chengdu, Sichuan 610500 Patentee after: AECC SICHUAN GAS TURBINE Research Institute Address before: 621703 operation monitoring department, Jiangyou 305 mailbox, Mianyang City, Sichuan Province Patentee before: CHINA GAS TURBINE EST |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |
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| CX01 | Expiry of patent term |