CN106640418A - Variable Mach number rotating mechanism based on semicircular bearings - Google Patents
Variable Mach number rotating mechanism based on semicircular bearings Download PDFInfo
- Publication number
- CN106640418A CN106640418A CN201611192394.0A CN201611192394A CN106640418A CN 106640418 A CN106640418 A CN 106640418A CN 201611192394 A CN201611192394 A CN 201611192394A CN 106640418 A CN106640418 A CN 106640418A
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- side wall
- bearing
- face
- support plate
- bottom half
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/06—Varying effective area of jet pipe or nozzle
- F02K1/15—Control or regulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention relates to a variable Mach number rotating mechanism based on semicircular bearings. The mechanism comprises a left side wall 1, an upper molding surface mechanism 2, a lower molding surface mechanism 3, an upper support plate 4, a lower support plate 5, an upper right semicircular bearing 6, an upper left semicircular bearing 7, a lower right semicircular bearing 8, a lower left semicircular bearing 9 and a right side wall 10. For a free jet spraying pipe with an open type outlet, the semicircular shaft lug design of the rotating mechanism effectively guarantees a rigid molding surface rotating center shaft as a spraying pipe molding surface outlet edge line so as to effectively guarantee the reference uniformity of the sectional area of the outlet of the spraying pipe and the throat way control height in the Mach number adjusting process; and a fixed molding surface driving end adopts an arc guide rail mode to effectively compensate the defect of incapability of locking the semicircular bearings, so that the adjustment of a driving mechanism is effective and fast.
Description
Technical field
The invention belongs to the testing equipment designing technique of a kind of wind tunnel test or aero-engine HIGHER ALTITUDE TEST FACILITY aerodynamic testing, tool
Body is related to a kind of change Mach number rotating mechanism for being based on half circular journal bearing.
Background technology
Its supersonic nozzle outlet of traditional closed type supersonic jet wind-tunnel is straight with experimental section, in other words, supersonic speed
Nozzle exit need to keep level tangent with experimental section, to avoid the secondary shock wave of outside nozzle.For closed type rigidity jet pipe
Since it is desired that keeping outlet level, therefore typically arrange near nozzle exit around center of rotation, by concave-convex type circular arc and test
Duan Jinhang is in smoothing junction.
And for open type free jet altitude simulation test, open type nozzle exit is broad experimental cabin space, i.e.,
Nozzle exit section is glitch-free aerodynamics, that is to say, that can not be projected into jet pipe around the pivot of nozzle exit and go out
Include the left and right side of nozzle exit outside mouth section, in order to avoid affect flow expansion and test core space flow quality.
In order to solve this problem, traditional open type flexible joint nozzle is directly to fix nozzle exit, pivot level
Reach, its design principle is to ensure that flexible board plays turning point slope straight line and exit tangent joining, to guarantee the company in air-driven type face
Continuous property.If the design using pivot near nozzle exit, the endpoint location in nozzle exit type face, it is inevitable because
Type face rotates and changes, i.e. nozzle exit highly changes, it is well known that the control of jet pipe Mach number is by adjusting spray
The area ratio of pipe venturi and nozzle exit realizing, if both change in process of the test, although also can obtain
To a Mach number, but the Mach number it is accurate with the control of target Mach number it is difficult to ensure that, meanwhile, it is horizontal according to nozzle exit
The fixed face of state design, after exit angle changes, the gentle flow angle of its flow quality will occur relatively large deviation.That is
Scheme using pivot near nozzle exit, it is necessary to sacrifice certain degree of regulation and flow field quality ignores certain tune
Section error.For the supersonic speed variable Mach number nozzle in rigid type face, the engineering design of rigid jet pipe rotating mechanism is very crucial,
Pivot must be strict be arranged at the end face sideline in nozzle exit type face.Such as design jet pipe by the way of full circle axle to go out
The pivot of mouth end points, certainly will project a part in nozzle exit section side wall, and this is that aerodynamics free wxpansion is not allowed
's.
The content of the invention
The technical problem to be solved in the present invention：
Design is simple, reliable open type rigidity jet pipe Mach number continuously adjustable mechanism, while by fixed face end
Half circular shaft Rotation Design is held, it is ensured that open type nozzle exit area is constant and Mach number degree of regulation, when jet pipe Mach number connects
During continuous regulation, realize that nozzle exit air velocity distribution is uniform, regular.Improve its service efficiency and practicality.
Technical scheme：
A kind of change Mach number rotating mechanism for being based on half circular journal bearing, including left side wall (1), mo(u)ld top half face mechanism (2), mo(u)ld bottom half face
Mechanism (3), upper backup pad (4), lower supporting plate (5), upper right semi-circle bearing (6), upper left semicircle bearing (7), lower right semi-circle bearing
(8), lower left semicircle bearing (9), right side wall (10), upper backup pad (4) is positioned at mo(u)ld top half face mechanism (2) top, left side wall (1) and the right side
Between side wall (10), lower supporting plate (5) positioned at mo(u)ld bottom half face mechanism (4) lower section, between left side wall (1) and right side wall (10),
The mo(u)ld top half face mechanism (2) includes mo(u)ld top half panel (2-1), upper bogie (2-2), upper sealing support plate (2-3), upper right
Half circular shaft ear (2-4), upper left semicircle axle ear (2-5)；The mo(u)ld bottom half face mechanism (3) includes mo(u)ld bottom half panel (3-1, lower bogie (3-
2), lower sealing support plate (3-3), lower right semi-circle axle ear (3-4), lower left semicircle axle ear (3-5)；
Mo(u)ld top half panel (2-1) in mo(u)ld top half face mechanism (2) and upper bogie (2-2), upper sealing support plate (2-3), upper right half
Circular shaft ear (2-4), upper left semicircle axle ear (2-5) are and are fixedly connected, and the upper right semi-circle axle ear (2-4) is by upper right semi-circle axle
Hold (6) to be connected in the upper right rotating drum of right side wall (10), rotary shaft is O of mo(u)ld top half panel (2-1) exit end face near inner chamber
Axle, right side wall (10) plays axial limiting effect to mo(u)ld top half panel (2-1), and the upper left semicircle axle ear (2-5) is by upper left semicircle
Bearing (7) is connected in the upper left rotating drum of left side wall (1), and rotary shaft is O of mo(u)ld top half panel (2-1) exit end face near inner chamber
Axle, left side wall (1) plays axial limiting effect to mo(u)ld top half panel (2-1)；
The mo(u)ld bottom half panel (3-1) of mo(u)ld bottom half face mechanism (3) and lower bogie (3-2), lower sealing support plate (3-3), lower right semi-circle
Axle ear (3-4), lower left semicircle axle ear (3-5) are and are fixedly connected, and the lower right semi-circle axle ear (3-4) is by lower right semi-circle bearing
(6) it is connected in the bottom right rotating drum of right side wall (10), rotary shaft is N axle of mo(u)ld bottom half panel (3-1) exit end face near inner chamber,
Right side wall (10) plays axial limiting effect to mo(u)ld bottom half panel (3-1), and the lower left semicircle axle ear (3-5) is by lower left semicircle bearing
(7) it is connected in the lower-left rotating drum of left side wall (1), rotary shaft is N axle of mo(u)ld bottom half panel (3-1) exit end face near inner chamber,
Left side wall (1) plays axial limiting effect to mo(u)ld bottom half panel (3-1)；
Upper backup pad (4) is arc surface in the end face of air inlet extreme direction, and the arc surface rotary shaft is O axles, and upper sealing is propped up
Plate (2-3) axially plays position-limiting action with the arc surface rigid contact of upper backup pad (4) in jet pipe, and the sealing support plate (2-3) can
Arc surface along the upper backup pad (4) slides；
Lower supporting plate (5) is arc surface in the end face of air inlet extreme direction, and the arc surface rotary shaft is N axles, and lower sealing is propped up
Plate (3-3) axially plays position-limiting action with the arc surface rigid contact of lower supporting plate (5) in jet pipe, and the sealing support plate (3-3) can
Arc surface along the lower supporting plate (5) slides.
A kind of described change Mach number rotating mechanism for being based on half circular journal bearing, the mo(u)ld top half face mechanism (2) is by upper driving
Frame (2-2) is fixedly connected with upper drive mechanism (11), and mo(u)ld bottom half face mechanism (3) is by lower bogie (3-2) and lower drive mechanism
(12) it is fixedly connected.
Beneficial effects of the present invention：
Advantage：
A) half circular shaft design solves open type rigidity jet pipe Mach number and continuously adjusts what its exit flow quality was limited
Affect.
B) fixed face drive end adopts arc guide rail pattern, effectively compensate for the defect that half circular journal bearing can not be locked.
Effect：
A kind of change Mach number rotating mechanism reasonable design method for being based on half circular journal bearing.The circular shaft of rigid type face end half sets
Meter, it is ensured that open type nozzle exit area is constant, and realize that nozzle exit air velocity distribution is uniform, regular.In outside nozzle energy
An obvious even test region is accessed, test requirements document is met, is worked well in HIGHER ALTITUDE TEST FACILITY blowing test.
Description of the drawings
Fig. 1 is that fragmentary three-dimensional view is installed by mechanism；
Fig. 2 is upper and lower rigid type face mechanism front view；
Fig. 3 is based on the change Mach number rotating mechanism schematic diagram of half circular journal bearing.
Specific embodiment
The workflow of the jet pipe is：By the both forward and reverse directions limit for sealing support plate and gripper shoe, half circular shaft ear and side wall
Behind position, type face drive mechanism drives rotation support plate to be moved；Whole Xing Mian mechanisms are driven in half circular journal bearing, gripper shoe circular arc
Rotating along center of rotation O under effect；So as to the venturi for realizing Xing Mian mechanisms is highly adjusted, type face exit position keeps O axles
It is constant, and then realize the accurate adjustment of nozzle exit Mach number.
Claims (2)
1. a kind of change Mach number rotating mechanism for being based on half circular journal bearing, it is characterised in that including left side wall (1), mo(u)ld top half face mechanism
(2), mo(u)ld bottom half face mechanism (3), upper backup pad (4), lower supporting plate (5), upper right semi-circle bearing (6), upper left semicircle bearing (7), under
Right semi-circle bearing (8), lower left semicircle bearing (9), right side wall (10), upper backup pad (4) is left positioned at mo(u)ld top half face mechanism (2) top
Between side wall (1) and right side wall (10), lower supporting plate (5) is positioned at mo(u)ld bottom half face mechanism (4) lower section, left side wall (1) and right side wall
(10) between,
The mo(u)ld top half face mechanism (2) includes mo(u)ld top half panel (2-1), upper bogie (2-2), upper sealing support plate (2-3), upper right semi-circle
Axle ear (2-4), upper left semicircle axle ear (2-5)；The mo(u)ld bottom half face mechanism (3) including mo(u)ld bottom half panel (3-1, lower bogie (3-2),
Lower sealing support plate (3-3), lower right semi-circle axle ear (3-4), lower left semicircle axle ear (3-5)；
Mo(u)ld top half panel (2-1) in mo(u)ld top half face mechanism (2) and upper bogie (2-2), upper sealing support plate (2-3), upper right semi-circle axle
Ear (2-4), upper left semicircle axle ear (2-5) are and are fixedly connected, and the upper right semi-circle axle ear (2-4) is by upper right semi-circle bearing
(6) it is connected in the upper right rotating drum of right side wall (10), rotary shaft is O axle of mo(u)ld top half panel (2-1) exit end face near inner chamber,
Right side wall (10) plays axial limiting effect to mo(u)ld top half panel (2-1), and the upper left semicircle axle ear (2-5) is by upper left semicircle bearing
(7) it is connected in the upper left rotating drum of left side wall (1), rotary shaft is O axle of mo(u)ld top half panel (2-1) exit end face near inner chamber,
Left side wall (1) plays axial limiting effect to mo(u)ld top half panel (2-1)；
The mo(u)ld bottom half panel (3-1) of mo(u)ld bottom half face mechanism (3) and lower bogie (3-2), lower sealing support plate (3-3), lower right semi-circle axle ear
(3-4), lower left semicircle axle ear (3-5) is and is fixedly connected, and the lower right semi-circle axle ear (3-4) is by lower right semi-circle bearing (6)
It is connected in the bottom right rotating drum of right side wall (10), rotary shaft is N axle of mo(u)ld bottom half panel (3-1) exit end face near inner chamber, right
Side wall (10) plays axial limiting effect to mo(u)ld bottom half panel (3-1), and the lower left semicircle axle ear (3-5) is by lower left semicircle bearing
(7) it is connected in the lower-left rotating drum of left side wall (1), rotary shaft is N axle of mo(u)ld bottom half panel (3-1) exit end face near inner chamber,
Left side wall (1) plays axial limiting effect to mo(u)ld bottom half panel (3-1)；
Upper backup pad (4) air inlet extreme direction end face be arc surface, the arc surface rotary shaft be O axles, upper sealing support plate (2-
3) position-limiting action is axially played in jet pipe with the arc surface rigid contact of upper backup pad (4), the sealing support plate (2-3) can be along described
The arc surface of upper backup pad (4) slides；
Lower supporting plate (5) air inlet extreme direction end face be arc surface, the arc surface rotary shaft be N axles, lower sealing support plate (3-
3) position-limiting action is axially played in jet pipe with the arc surface rigid contact of lower supporting plate (5), the sealing support plate (3-3) can be along described
The arc surface of lower supporting plate (5) slides.
2. a kind of change Mach number rotating mechanism for being based on half circular journal bearing according to claim 1, it is characterised in that on described
Xing Mian mechanisms (2) are fixedly connected by upper bogie (2-2) with upper drive mechanism (11), and mo(u)ld bottom half face mechanism (3) is by lower driving
Frame (3-2) is fixedly connected with lower drive mechanism (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611192394.0A CN106640418B (en) | 2016-12-21 | 2016-12-21 | A kind of change Mach number rotating mechanism based on half circular journal bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611192394.0A CN106640418B (en) | 2016-12-21 | 2016-12-21 | A kind of change Mach number rotating mechanism based on half circular journal bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106640418A true CN106640418A (en) | 2017-05-10 |
| CN106640418B CN106640418B (en) | 2018-04-03 |
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ID=58834447
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611192394.0A Active CN106640418B (en) | 2016-12-21 | 2016-12-21 | A kind of change Mach number rotating mechanism based on half circular journal bearing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168831A (en) * | 2017-12-15 | 2018-06-15 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of continuous change Mach number experiment supersonic wind tunnel |
| CN108362465A (en) * | 2017-12-29 | 2018-08-03 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | The half soft vertical spatial Vidacare corp of wall surface jet pipe larynx block of continous way transonic wind tunnel |
| CN108412635A (en) * | 2018-02-07 | 2018-08-17 | 大连交通大学 | A kind of binary direct-injection type oblique shock wave Thrust-vectoring Nozzle |
| CN113049257A (en) * | 2021-03-23 | 2021-06-29 | 中国空气动力研究与发展中心空天技术研究所 | Sound velocity spray pipe with adjustable outlet height |
| CN113295369A (en) * | 2021-05-17 | 2021-08-24 | 中国人民解放军国防科技大学 | Jet pipe section structure and method for realizing continuous variable Mach number wind tunnel |
| CN114109644A (en) * | 2021-10-09 | 2022-03-01 | 中国航发贵阳发动机设计研究所 | Method for adjusting area of exit throat of special-shaped fixed spray pipe of aircraft engine |
| CN114414197A (en) * | 2022-03-28 | 2022-04-29 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Variable Mach number spray pipe of flexible wallboard of prebending |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168831A (en) * | 2017-12-15 | 2018-06-15 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of continuous change Mach number experiment supersonic wind tunnel |
| CN108362465A (en) * | 2017-12-29 | 2018-08-03 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | The half soft vertical spatial Vidacare corp of wall surface jet pipe larynx block of continous way transonic wind tunnel |
| CN108412635A (en) * | 2018-02-07 | 2018-08-17 | 大连交通大学 | A kind of binary direct-injection type oblique shock wave Thrust-vectoring Nozzle |
| CN113049257A (en) * | 2021-03-23 | 2021-06-29 | 中国空气动力研究与发展中心空天技术研究所 | Sound velocity spray pipe with adjustable outlet height |
| CN113295369A (en) * | 2021-05-17 | 2021-08-24 | 中国人民解放军国防科技大学 | Jet pipe section structure and method for realizing continuous variable Mach number wind tunnel |
| CN113295369B (en) * | 2021-05-17 | 2022-08-23 | 中国人民解放军国防科技大学 | Jet pipe section structure and method for realizing continuous variable Mach number wind tunnel |
| CN114109644A (en) * | 2021-10-09 | 2022-03-01 | 中国航发贵阳发动机设计研究所 | Method for adjusting area of exit throat of special-shaped fixed spray pipe of aircraft engine |
| CN114414197A (en) * | 2022-03-28 | 2022-04-29 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Variable Mach number spray pipe of flexible wallboard of prebending |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106640418B (en) | 2018-04-03 |
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Address after: 610500 Xindu Xuefu Road, Xindu District, Chengdu, Sichuan Patentee after: AECC SICHUAN GAS TURBINE Research Institute Address before: 621703 P.O. Box 305, Mianyang City, Sichuan Province Patentee before: CHINA GAS TURBINE EST |
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