CN102490741A - Air supply uniformity regulating system for lower static-pressure type air duct - Google Patents
Air supply uniformity regulating system for lower static-pressure type air duct Download PDFInfo
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- CN102490741A CN102490741A CN2011104143443A CN201110414344A CN102490741A CN 102490741 A CN102490741 A CN 102490741A CN 2011104143443 A CN2011104143443 A CN 2011104143443A CN 201110414344 A CN201110414344 A CN 201110414344A CN 102490741 A CN102490741 A CN 102490741A
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- plenum chamber
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Abstract
The invention discloses an air supply uniformity regulating system for a lower static-pressure type air duct, which belongs to the field of air duct systems of urban rail vehicles and aims to solve the problem that an existing regulating system cannot perfectly regulate air supply uniformity of an air duct system. The air supply uniformity regulating system comprises a lower static-pressure box and a main air duct, a pored baffle plate is arranged at the front of the lower static-pressure box, and a perforated plate is arranged in the middle of the main air duct. The pored baffle plate is arranged in the static-pressure box, airflow is directly guided towards the lower portion of the static-pressure box according to an airflow diffusion principle, and the problem of low air supply quantity of the front of the air duct of the lower static-pressure box is effectively solved. In addition, airflow can be diffused again by the aid of the perforated plate arranged on the main air duct, accordingly, a single airflow diffusion mode is changed, and air supply uniformity of the air duct can be regulated more easily.
Description
Technical field
The present invention relates to city rail vehicle ducting system field, be specially static pressure type air channel, a kind of bottom air-supply homogeneity Adjustment System.
Background technology
The railcar design generally is to fix preliminary spatial dimension and air outlet position according to the vehicle general design; Fix the ducting system largest cross-sectional sized according to air output and air delivery duct inlet velocity then; Then confirm effective air-out gross area according to total air output and the average air-supply of design wind speed; Carry out the design of detailed air channel at last, and finally confirm the ducting system scheme through ducting system air-supply uniformity test.The air-supply homogeneity of ducting system finally has only through testing and adjusts, and general Adjustment System is difficult to reach ideal effect.
The general modes such as tapering type air channel, air trunk intermediate arrangement deflecting plate, adjustment air channel air outlet perforate that adopt of the air-supply homogeneity Adjustment System in static pressure type air channel, existing bottom; These modes can be adjusted air channel air-supply homogeneity to a certain extent, but very limited for the regulating power of problems such as the wind speed of air channel plenum chamber air outlet leading portion is low.The mode of existing deflecting plate adjustment is toward leaning on static pressure orifice plate one side water conservancy diversion with air-flow.
Summary of the invention
The deficiency that is difficult to reach ideal effect for the air-supply homogeneity that overcomes existing Adjustment System adjustment ducting system; The present invention aims to provide static pressure type air channel, a kind of bottom air-supply homogeneity Adjustment System; But this Adjustment System actv. solves the little problem of the anterior air-supply in static pressure air channel, bottom; And can change air-flow mono-diffusion way, the air channel air-supply is adjusted to evenly more easily.
To achieve these goals; The technical scheme that the present invention adopted is: static pressure type air channel, said bottom air-supply homogeneity Adjustment System, comprise bottom plenum chamber and air trunk, and its constructional feature is; The anterior perforated baffle of arranging of plenum chamber is provided with breaker plate at the air trunk middle part in the bottom.
Perforated baffle can get off pasting the air-flow retaining part that static aperture spreads forward, forms downward air-out, also on baffle plate, opens big circular hole in addition, and air-flow also can be advanced forward when can guarantee to keep off a part of air-flow and get off, and can back not form eddy current.
Further, the ratio of the perforated area of said perforated baffle and plenum chamber sectional area is preferably 0.4～0.6, and more preferably 0.5.
Said breaker plate is intensive near the hole that the position of plenum chamber is provided with, and is sparse away from the hole that the position of plenum chamber is provided with, and the aperture in the hole that is provided with away from the position of plenum chamber, the aperture in the hole that is provided with near the position of plenum chamber is little.The position in each hole is decided according to the air-flow spread condition, and the breaker plate resistance ratios is bigger, arranges that quantity is unsuitable too many.
In general, static pressure type air channel, bottom air-supply rule is that front portion and afterbody are less, and centre portion is more.The reason that forms this trend is because the air outlet wind speed is higher; It is less that the past bottom of air-flow plenum chamber spreads, and arrived the more abundant of centre portion diffusion, and wind speed is higher in the plenum chamber; Arrived similar that tail wind has spread, so wind speed has also just fallen.By said structure; Through the anterior perforated baffle of arranging of plenum chamber in the bottom, can get off pasting the air-flow retaining part that static aperture spreads forward, form downward air-out; Also on baffle plate, open big circular hole in addition; Air-flow also can be advanced forward when can guarantee to keep off a part of air-flow and get off, and can back not form eddy current, has increased the anterior wind speed of air channel air-supply with regard to actv. like this; At the air trunk middle part breaker plate is set, air communication spreads toward all directions after crossing breaker plate again, and the combing air-flow prevents the too abundant of air-flow diffusion at the middle part again, and the afterbody wind speed is too small.Can effectively solve the air-supply homogeneity question in static pressure air channel, bottom through the adjustment of these two kinds of methods.
Compared with prior art, the invention has the beneficial effects as follows: the present invention is at plenum chamber internal placement perforated baffle, and directly with the past plenum chamber bottom of air-flow water conservancy diversion, actv. has solved the little problem of the anterior air-supply in static pressure air channel, bottom according to the air-flow diffusion principle.Arrange that at air trunk breaker plate can let air-flow spread again, thereby changed air-flow mono-diffusion way, the air channel air-supply is adjusted to evenly more easily.
Below in conjunction with accompanying drawing and embodiment the present invention is done further elaboration.
Description of drawings
Fig. 1 is the structural representation of perforated baffle according to the invention;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3 is the structural representation of breaker plate according to the invention;
Fig. 4 is the left view of Fig. 3.
In the drawings
The 1-perforated baffle; The 2-breaker plate.
The specific embodiment
Static pressure type air channel, a kind of bottom air-supply homogeneity Adjustment System, as illustrated in fig. 1 and 2, through the anterior perforated baffle 1 of arranging of plenum chamber in the bottom; Can get off pasting the air-flow retaining part that static aperture spreads forward; Form downward air-out, also on perforated baffle 1, open big circular hole, said perforated baffle 1 overall U-shaped in addition; The opening surface of this perforated baffle 1 is to the air intake direction; Air-flow also can be advanced forward when can guarantee to keep off a part of air-flow and get off, and can back not form eddy current, has increased the anterior wind speed of air channel air-supply with regard to actv. like this; Shown in Fig. 3 and 4, at the air trunk middle part breaker plate 2 is set, have many row's circular holes on the said breaker plate 2.Said breaker plate 2 overall U-shaped, the opening surface of this breaker plate 2 are to the air intake direction, and air communication spreads toward all directions after crossing breaker plate 2 again, and the combing air-flow prevents the too abundant of air-flow diffusion at the middle part again, and the afterbody wind speed is too small.
Perforate of plenum chamber perforated baffle and arrangement principle: perforated area is about the half the of plenum chamber sectional area; Position should carry out fore-and-aft adjustment according to getting into plenum chamber in-to-in air rate in the forward position of every section plenum chamber.
Air trunk breaker plate perforate principle and arrangement principle: near intensive layout circular hole in the position of plenum chamber or aperture, away from sparse layout circular hole in the position of plenum chamber or layout macropore; Position is decided according to the air-flow spread condition, and the breaker plate resistance ratios is bigger, arranges that quantity is unsuitable too many.
Be example with Line 1 the second stage of the project project air channel, Wuhan test figures below, contrast:
| Air outlet | Wind speed (m/s) before not adjusting | Adjustment back wind speed (m/s) |
| |
0.03 | 1.73 |
| |
0.07 | 1.2 |
| Measuring point 3 | 1.0 | 1.5 |
| Measuring point 4 | 1.52 | 2.32 |
| Measuring point 5 | 1.56 | 1.36 |
| Measuring point 6 | 1.7 | 1.5 |
| Measuring point 7 | 3.29 | 2.09 |
| Measuring point 8 | 3.33 | 2.13 |
| Measuring point 9 | 3.65 | 2.45 |
| Measuring point 10 | 2.82 | 2.62 |
| Measuring point 11 | 2.07 | 1.87 |
| Measuring point 12 | 1.94 | 1.74 |
| Measuring point 13 | 2.26 | 2.06 |
| Measuring point 14 | 1.58 | 2.88 |
| Measuring point 15 | 1.31 | 2.11 |
| Measuring point 16 | 1.22 | 3.02 |
| Measuring point 17 | 1.56 | 2.36 |
Can find out that by last table adjustment back air outlet wind speed is more steady, evenly.
The content that the foregoing description is illustrated is to be understood that to these embodiment and only is used to be illustrated more clearly in the present invention; And be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Claims (8)
1. static pressure type air channel, bottom air-supply homogeneity Adjustment System comprises bottom plenum chamber and air trunk, it is characterized in that, the anterior perforated baffle (1) of arranging of plenum chamber is provided with breaker plate (2) at the air trunk middle part in the bottom.
2. static pressure type air channel, bottom according to claim 1 air-supply homogeneity Adjustment System is characterized in that said perforated baffle has circular hole on (1).
3. static pressure type air channel, bottom according to claim 1 air-supply homogeneity Adjustment System is characterized in that, has many row's circular holes on the said breaker plate (2).
4. static pressure type air channel, bottom according to claim 1 and 2 air-supply homogeneity Adjustment System is characterized in that, said perforated baffle (1) overall U-shaped, and the opening surface of this perforated baffle (1) is to the air intake direction.
5. according to claim 1 or static pressure type air channel, 3 described bottom air-supply homogeneity Adjustment System, it is characterized in that, said breaker plate (2) overall U-shaped, the opening surface of this breaker plate (2) is to the air intake direction.
6. static pressure type air channel, bottom according to claim 1 and 2 air-supply homogeneity Adjustment System is characterized in that the perforated area of said perforated baffle (1) and the ratio of plenum chamber sectional area are 0.4～0.6.
7. static pressure type air channel, bottom according to claim 6 air-supply homogeneity Adjustment System is characterized in that the perforated area of said perforated baffle (1) and the ratio of plenum chamber sectional area are 0.5.
8. according to claim 1 or static pressure type air channel, 3 described bottom air-supply homogeneity Adjustment System; It is characterized in that; Said breaker plate (2) is intensive near the hole of the position setting of plenum chamber; Hole away from the position of plenum chamber is provided with is sparse, and the aperture in the hole that is provided with away from the position of plenum chamber, the aperture in the hole that is provided with near the position of plenum chamber is little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104143443A CN102490741A (en) | 2011-12-13 | 2011-12-13 | Air supply uniformity regulating system for lower static-pressure type air duct |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104143443A CN102490741A (en) | 2011-12-13 | 2011-12-13 | Air supply uniformity regulating system for lower static-pressure type air duct |
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| CN102490741A true CN102490741A (en) | 2012-06-13 |
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| CN2011104143443A Pending CN102490741A (en) | 2011-12-13 | 2011-12-13 | Air supply uniformity regulating system for lower static-pressure type air duct |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107351369A (en) * | 2017-07-05 | 2017-11-17 | 大连理工大学 | A kind of design method of the plenum chamber group with flaring profiled orifice plate |
| CN108826947A (en) * | 2017-12-04 | 2018-11-16 | 湖南省浏阳市择明热工器材有限公司 | Half static pressure air supply device of one kind and drying equipment |
| CN109489231A (en) * | 2018-11-14 | 2019-03-19 | 西安建筑科技大学 | A kind of plenum chamber of inverted speed distribution |
| CN112543724A (en) * | 2018-08-31 | 2021-03-23 | 川崎重工业株式会社 | Air conditioning pipe for railway vehicle |
Citations (5)
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| GB528134A (en) * | 1938-05-02 | 1940-10-23 | Burgess Battery Co | Improvements in air-distributing apparatus for ventilating systems |
| CN201619420U (en) * | 2009-12-25 | 2010-11-03 | 中国轻工业武汉设计工程有限责任公司 | Energy-saving conformable bus plenum chamber type ventilation roof |
| CN201844514U (en) * | 2010-11-02 | 2011-05-25 | 南车株洲电力机车有限公司 | Air condition overlong air supply duct |
| CN201882079U (en) * | 2010-12-14 | 2011-06-29 | 南车南京浦镇车辆有限公司 | Static pressure air duct for subway train |
| CN202358113U (en) * | 2011-12-13 | 2012-08-01 | 南车株洲电力机车有限公司 | Air supply uniformity adjusting system for lower static pressure type air channel |
-
2011
- 2011-12-13 CN CN2011104143443A patent/CN102490741A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB528134A (en) * | 1938-05-02 | 1940-10-23 | Burgess Battery Co | Improvements in air-distributing apparatus for ventilating systems |
| CN201619420U (en) * | 2009-12-25 | 2010-11-03 | 中国轻工业武汉设计工程有限责任公司 | Energy-saving conformable bus plenum chamber type ventilation roof |
| CN201844514U (en) * | 2010-11-02 | 2011-05-25 | 南车株洲电力机车有限公司 | Air condition overlong air supply duct |
| CN201882079U (en) * | 2010-12-14 | 2011-06-29 | 南车南京浦镇车辆有限公司 | Static pressure air duct for subway train |
| CN202358113U (en) * | 2011-12-13 | 2012-08-01 | 南车株洲电力机车有限公司 | Air supply uniformity adjusting system for lower static pressure type air channel |
Non-Patent Citations (1)
| Title |
|---|
| 杨柳: "风道结构优化对地铁车室内气流组织均匀性影响的研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》, no. 5, 25 December 2009 (2009-12-25) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107351369A (en) * | 2017-07-05 | 2017-11-17 | 大连理工大学 | A kind of design method of the plenum chamber group with flaring profiled orifice plate |
| CN107351369B (en) * | 2017-07-05 | 2019-03-05 | 大连理工大学 | A kind of design method of the plenum chamber group with flaring profiled orifice plate |
| CN108826947A (en) * | 2017-12-04 | 2018-11-16 | 湖南省浏阳市择明热工器材有限公司 | Half static pressure air supply device of one kind and drying equipment |
| CN108826947B (en) * | 2017-12-04 | 2021-02-26 | 湖南省浏阳市择明热工器材有限公司 | Semi-static pressure air supply device and drying equipment |
| CN112543724A (en) * | 2018-08-31 | 2021-03-23 | 川崎重工业株式会社 | Air conditioning pipe for railway vehicle |
| CN112543724B (en) * | 2018-08-31 | 2023-06-30 | 川崎车辆株式会社 | Air conditioner pipe for railway vehicle |
| CN109489231A (en) * | 2018-11-14 | 2019-03-19 | 西安建筑科技大学 | A kind of plenum chamber of inverted speed distribution |
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Application publication date: 20120613 |