CN112014061A - Vibration damper of oscillating blade gust generator - Google Patents
Vibration damper of oscillating blade gust generator Download PDFInfo
- Publication number
- CN112014061A CN112014061A CN202011090478.XA CN202011090478A CN112014061A CN 112014061 A CN112014061 A CN 112014061A CN 202011090478 A CN202011090478 A CN 202011090478A CN 112014061 A CN112014061 A CN 112014061A
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- China
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- swing
- swing blade
- gust generator
- blade
- partition plate
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- 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
- G01M9/02—Wind tunnels
- G01M9/04—Details
Abstract
The invention provides a vibration damper of a swing blade gust generator, which comprises a constant pressure valve, an exhaust pipe, an air inlet pipe, a middle inflatable soft plate, an upper partition plate, a lower partition plate and two groups of compression springs, wherein a radial displacement gap is arranged between a rotating shaft of a swing blade and a bearing, the upper partition plate and the lower partition plate are positioned between the radial displacement gaps, the middle inflatable soft plate is arranged between the upper partition plate and the lower partition plate, the two groups of compression springs are also positioned between the upper partition plate and the lower partition plate and on two sides of the middle inflatable soft plate, the exhaust pipe and the air inlet pipe are connected with the middle inflatable soft plate, and the constant pressure valve sets a pressure value according to the swing frequency and angle working conditions of the swing blade and controls the air. The invention can restrain the gap of the rotating shaft bearing of the wind gust generator according to the operating frequency and the operating angle of the wind gust generator with the oscillating blades, effectively reduces the vibration amplitude of the wind gust generator with the oscillating blades during working, and improves the working efficiency of the wind gust generator with the oscillating blades.
Description
Technical Field
The invention belongs to the field of vibration reduction of a wind gust generator, and particularly relates to a vibration reduction device of a swing blade wind gust generator.
Background
With the improvement of aviation science and technology, the requirement of reducing the wind tunnel test aiming at the gust load and the gust load of the civil passenger plane is more and more important. Through the gust test of wind tunnel, can provide important experimental parameter for the design of civil passenger plane flight control rate, test verification is carried out to gust load slowing down technique, promotes safety and the travelling comfort of civil passenger plane flight under the gust state.
The oscillating blade gust generator is core equipment for realizing wind tunnel gust simulation, sinusoidal gust and random gust can be simulated in a wind tunnel through reciprocating oscillation of the oscillating blade, and the oscillating blade gust generator transmits vibration to the maximum structural gap position of the gust generator under the coupling action of air flow during operation, namely the hydraulic oscillating cylinder of the oscillating blade gust generator and the rotating shaft connected with the oscillating blade. The vibration can influence the working state of the gust generator, so that the actual working frequency and the set frequency of the gust generator generate large deviation, and the gust generator is easy to resonate, thereby influencing the safe use of the equipment.
Disclosure of Invention
The invention aims to provide a vibration damper of a swing blade gust generator for the gust generator, which is used for realizing vibration damping of the swing blade gust generator when the swing blade gust generator operates in a wind tunnel, reducing the vibration amplitude of the swing blade gust generator when the swing blade gust generator operates and improving the working efficiency of the swing blade gust generator.
The technical solution of the invention is as follows: the utility model provides a vibration damper of swing blade gust generator, includes constant pressure valve, blast pipe, intake pipe, middle inflation soft board, goes up the baffle, lower baffle, two sets of compression spring, is provided with the radial displacement clearance between swing blade's pivot and the bearing, goes up the baffle and is located down the radial displacement clearance between, go up the baffle and install middle inflation soft board between the baffle down, two sets of compression spring also are located between baffle and the lower baffle, the middle both sides of inflating the soft board, blast pipe and intake pipe and middle inflation soft board be connected, the constant pressure valve sets for the pressure value according to swing blade wobbling frequency and angle operating mode, aerifys the air pressure in the soft board in the middle of the control.
The invention also has the following technical characteristics:
1. the exhaust pipe and the air inlet pipe sequentially penetrate through the bearing seat, the outer shaft sleeve and the upper partition plate of the swing blade rotating shaft and are connected with the middle inflatable soft plate.
2. The air inlet pipe is provided with a constant pressure valve.
3. The oscillating blade performs air supplement on the middle inflatable soft plate in a low-frequency and small-angle oscillating state, and the expanded middle inflatable soft plate inhibits the vibration amplitude of the gust generator at the radial gap between the rotating shaft and the bearing; the swing blade is in the state of high frequency and wide-angle swing, the middle inflatable soft plate, the two lower partition plates and the miniature compression spring act together to restrain the vibration amplitude of the gust generator at the radial gap of the rotating shaft and the bearing, the constant pressure valve sets a pressure value according to the swing frequency and the angle working condition of the swing blade, controls the air pressure in the middle inflatable soft plate, controls the elastic damping effect, and enables the elastic damping to be matched with the swing working condition of the swing blade.
The invention has the following beneficial effects and advantages: the invention can restrain the clearance of the rotating shaft bearing of the wind gust generator according to the operating frequency and the operating angle of the wind gust generator with the oscillating blades. The method has the advantages of simple realization, quick application and convenient maintenance, effectively reduces the vibration amplitude of the oscillating blade gust generator during working, improves the working efficiency of the oscillating blade gust generator and has very wide application prospect.
Drawings
FIG. 1 is a front view of a swing blade gust generator;
FIG. 2 is a side view of a swing blade gust generator;
FIG. 3 is a schematic diagram of a vibration damping device of a swing blade gust generator;
fig. 4 is a hair growth diagram of section I of fig. 3.
The device comprises a wind tunnel body 1, a hydraulic swing cylinder 2, a hydraulic swing cylinder axial fixing seat 3, a hydraulic swing cylinder axial fixing seat 4, a vertical support 5, a top support seat 6, a bottom support seat 7, swing blades 8, a vertical support clamping plate 9, a hydraulic swing cylinder bottom support 10, a constant pressure valve 11, an exhaust pipe 12, a miniature quick-connection plug 13, a bearing seat insertion through pipe 14, a middle inflation soft plate 15, an upper partition plate 16, a lower partition plate 17 and a compression spring.
Detailed Description
The technical scheme of the invention is further explained by taking the following specific implementation examples in combination with the drawings of the specification.
As shown in fig. 1-2, the hydraulic swing cylinder 2 is connected with the hydraulic swing cylinder bottom support 9 and the wind tunnel body 1 through the hydraulic swing cylinder axial fixing seat 3, the hydraulic swing cylinder 2 drives the swing blade 7 to swing in a reciprocating manner when working, the swing blade 7 carries out intermediate support through the vertical support 4, the vertical support 4 is connected with the wind tunnel body 1 through the top support seat 5 and the bottom support seat 6, and the vertical support clamp plate 8 realizes the transverse positioning of the vertical support 4 in the wind tunnel body 1.
As shown in fig. 3-4, a vibration damper of a swing blade gust generator comprises a constant pressure valve 10, an exhaust pipe 11, an intake pipe 13, a middle inflatable soft plate 14, an upper partition 15, a lower partition 16, and two sets of compression springs 18, wherein a radial displacement gap 17 is arranged between a rotating shaft of a swing blade and a bearing, the upper partition 15 and the lower partition 16 are positioned between the radial displacement gaps 17, the middle inflatable soft plate 14 is arranged between the upper partition 15 and the lower partition 16, the two sets of compression springs 17 are also positioned between the upper partition 15 and the lower partition 16 and on two sides of the middle inflatable soft plate 14, and the exhaust pipe 11 and the intake pipe 13 sequentially penetrate through a bearing seat, an outer shaft sleeve and the upper partition of the rotating shaft of the swing blade to be connected with the middle inflatable soft plate 14. The air inlet pipe is provided with a constant pressure valve, and the constant pressure valve is connected with an external air source through a miniature quick-connection plug. The compression spring is a miniature compression spring. The exhaust pipe 11 and the intake pipe 13 are respectively divided into two groups.
Before the oscillating vane 7 works, the middle inflatable soft plate 14 is inflated and pressurized, and the pressure is stabilized through a constant pressure valve 10;
under the low-frequency and small-angle swinging state of the swinging blade, the vibration of the gust generator is mainly caused by a large radial gap between the rotating shaft and the bearing, air is introduced from the outside through the air inlet pipe 13, the middle inflatable soft plate 14 is expanded, the distance between the upper partition plate 15 and the lower partition plate 16 is further increased, the large radial gap between the rotating shaft and the bearing is reduced, and the vibration amplitude is reduced; under the state that the oscillating blade is in high frequency and large-angle oscillation, the vibration of the wind gust generator is mainly caused by the fact that the radial clearance between the rotating shaft and the bearing is small, the rotating shaft generates reciprocating impact collision on the bearing to cause vibration, air is introduced from the outside through the air inlet pipe 13, the pressure in the middle inflatable soft plate 14 is large, the upper partition plate 15, the compression spring 17, the middle inflatable soft plate 14 and the lower partition plate 16 form elastic damping on the impact of the rotating shaft, the direct impact of the rotating shaft on the bearing is restrained, and the vibration amplitude is reduced. The constant pressure valve 10 sets a pressure value according to the swinging frequency and angle working condition of the swinging blade, controls the air pressure in the middle inflatable soft plate 14, controls the elastic damping effect, enables the elastic damping to be matched with the swinging working condition of the blade, reasonably controls the vibration amplitude, and realizes effective vibration reduction.
Claims (4)
1. The utility model provides a vibration damper of swing blade gust generator, includes constant pressure valve (10), blast pipe (11), intake pipe (13), and soft board (14) are aerifyd in the middle of going up baffle (15), lower baffle (16), two sets of compression spring (18), are provided with radial displacement clearance (17), its characterized in that between swing blade's pivot and the bearing: go up baffle (15) and lower baffle (16) and be located radial displacement clearance (17) between, go up baffle (15) and install middle air inflation soft board (14) down between baffle (16), two sets of compression spring (18) also are located between baffle (15) and lower baffle (16), the both sides of middle air inflation soft board (14), blast pipe (11) and intake pipe (13) be connected with middle air inflation soft board (14), constant pressure valve (10) are according to the wobbling frequency of swing blade and angle operating mode set pressure value, the air pressure in the soft board (14) is aerifyd in the middle of the control.
2. The vibration damping device of a swing blade gust generator according to claim 1, wherein: the exhaust pipe (11) and the intake pipe (13) sequentially penetrate through the bearing seat, the outer shaft sleeve and the upper partition plate of the swing blade rotating shaft and are connected with the middle inflatable soft plate (14).
3. The vibration damping device of a swing blade gust generator according to claim 2, wherein: the air inlet pipe is provided with a constant pressure valve (10).
4. The vibration damping device of a swing blade gust generator according to any one of claims 1 to 3, wherein: the oscillating blade performs air supplement on the middle inflatable soft plate in a low-frequency and small-angle oscillating state, and the expanded middle inflatable soft plate inhibits the vibration amplitude of the gust generator at the radial gap between the rotating shaft and the bearing; the swing blade is in the state of high frequency and wide-angle swing, the middle inflatable soft plate, the two lower partition plates and the miniature compression spring act together to restrain the vibration amplitude of the gust generator at the radial gap of the rotating shaft and the bearing, the constant pressure valve sets a pressure value according to the swing frequency and the angle working condition of the swing blade, controls the air pressure in the middle inflatable soft plate, controls the elastic damping effect, and enables the elastic damping to be matched with the swing working condition of the swing blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011090478.XA CN112014061A (en) | 2020-10-13 | 2020-10-13 | Vibration damper of oscillating blade gust generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011090478.XA CN112014061A (en) | 2020-10-13 | 2020-10-13 | Vibration damper of oscillating blade gust generator |
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| Publication Number | Publication Date |
|---|---|
| CN112014061A true CN112014061A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011090478.XA Pending CN112014061A (en) | 2020-10-13 | 2020-10-13 | Vibration damper of oscillating blade gust generator |
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| CN (1) | CN112014061A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267315A (en) * | 2021-05-10 | 2021-08-17 | 中国航空工业集团公司哈尔滨空气动力研究所 | Low-speed wind tunnel direct-drive gust generating device |
| CN113465867A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side single-blade-grid high-speed wind tunnel gust simulation device |
| CN113465871A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Parallel binary cascade high-speed wind tunnel gust simulation device |
| CN113465870A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side parallel blade grid high-speed wind tunnel gust simulation device |
| CN113465868A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two parallel blade grids on two sides |
| CN113465869A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two side blade grids |
| CN113567085A (en) * | 2021-08-20 | 2021-10-29 | 中国空气动力研究与发展中心高速空气动力研究所 | Binary cascade high-speed wind tunnel gust simulation device |
-
2020
- 2020-10-13 CN CN202011090478.XA patent/CN112014061A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267315A (en) * | 2021-05-10 | 2021-08-17 | 中国航空工业集团公司哈尔滨空气动力研究所 | Low-speed wind tunnel direct-drive gust generating device |
| CN113267315B (en) * | 2021-05-10 | 2022-10-21 | 中国航空工业集团公司哈尔滨空气动力研究所 | Low-speed wind tunnel direct-drive gust generating device |
| CN113465867A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side single-blade-grid high-speed wind tunnel gust simulation device |
| CN113465871A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Parallel binary cascade high-speed wind tunnel gust simulation device |
| CN113465870A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side parallel blade grid high-speed wind tunnel gust simulation device |
| CN113465868A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two parallel blade grids on two sides |
| CN113465869A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two side blade grids |
| CN113567085A (en) * | 2021-08-20 | 2021-10-29 | 中国空气动力研究与发展中心高速空气动力研究所 | Binary cascade high-speed wind tunnel gust simulation device |
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