CN112295803A - Jet device with continuously adjustable nozzle height - Google Patents
Jet device with continuously adjustable nozzle height Download PDFInfo
- Publication number
- CN112295803A CN112295803A CN202011021309.0A CN202011021309A CN112295803A CN 112295803 A CN112295803 A CN 112295803A CN 202011021309 A CN202011021309 A CN 202011021309A CN 112295803 A CN112295803 A CN 112295803A
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- Prior art keywords
- movable plate
- lower movable
- ejector
- height
- pair
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/68—Arrangements for adjusting the position of spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
-
- 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 discloses a jet device with continuously adjustable nozzle height, belonging to the technical field of jet devices, comprising: the lower movable plate is arranged in a sliding manner and is provided with a driving mechanism for driving the lower movable plate to freely slide; the jet flow outlet is formed between the upper movable plate and the lower movable plate, and the upper movable plate and the lower movable plate perform linkage motion through a transmission pair; wherein, spout height through linkage motion correlation efflux mouth carries out continuous regulation to reach the purpose that satisfies the spout height convenient, continuous and dynamic adjustment demand.
Description
Technical Field
The invention belongs to the technical field of ejectors, and particularly relates to an ejector with a continuously adjustable nozzle height.
Background
In wind tunnel tests and flight tests of flap blowing lift-increasing and wing trailing edge blowing circulation control, a test system generally adopts an ejector with fixed geometric dimension, and the height of a nozzle of the ejector cannot be adjusted. However, the nozzle height is an important parameter for determining the performance of the blowing air, and the nozzle height of the ejector needs to be adjusted no matter in the process of test debugging or normal use. In order to meet the requirement of adjustable nozzle height, the currently adopted mode is to process ejectors with different nozzle heights, and the ejectors are integrally replaced when the height is adjusted.
The disadvantages are that: firstly, the whole nozzle needs to be replaced, so that the height of the nozzle is inconvenient to adjust and the whole dismounting process is complicated; secondly, the height adjusting value is limited and discontinuous; and thirdly, dynamic adjustment cannot be performed in the working process.
Disclosure of Invention
In view of the above, in order to solve the above problems in the prior art, the present invention provides an ejector with continuously adjustable nozzle height to meet the requirement of convenient, continuous and dynamic adjustment of nozzle height.
The technical scheme adopted by the invention is as follows: an ejector with continuously adjustable orifice height, the ejector comprising:
the lower movable plate is arranged in a sliding manner and is provided with a driving mechanism for driving the lower movable plate to freely slide;
the jet flow outlet is formed between the upper movable plate and the lower movable plate, and the upper movable plate and the lower movable plate perform linkage motion through a transmission pair;
wherein the height of the nozzle of the jet outlet is continuously adjusted by the linkage motion.
Further, the ejector further comprises:
the jet flow outlet is formed by extending one end parts of the upper movable plate and the lower movable plate out of the shell.
Furthermore, guide grooves matched with the upper movable plate and the lower movable plate are formed in the shell, so that the upper movable plate and the lower movable plate can slide freely in the corresponding guide grooves.
Further, the drive mechanism includes:
the screw pair is provided with a screw rod, and the screw rod is provided with a driving pair for driving the screw rod to rotate;
the rotary pair is rotatably sleeved on the screw rod, the rotary pair is connected with the lower movable plate, and the rotary pair and the screw rod synchronously displace to drive the lower movable plate to move.
Furthermore, the driving pair is a rotating wheel or a driving motor connected with the screw rod, so that the operation is convenient and fast, and the movement of the lower movable plate can be effectively driven.
Further, the transmission pair comprises:
the racks are respectively arranged on the upper movable plate and the lower movable plate;
the gear sets are in transmission connection with the racks through the gear sets;
through the cooperation transmission of gear and rack, it has the advantage that the transmission is reliable and stable and the precision is high.
Further, the gear set includes:
the upper gear is in meshed transmission with the rack where the upper movable plate is located;
and the lower gear is in meshing transmission with the rack where the lower movable plate is positioned.
Further, the lower movable plate is arranged on the horizontal straight line in a sliding mode, the upper movable plate is arranged obliquely relative to the lower movable plate, and an included angle between the upper movable plate and the lower movable plate is alpha.
The invention has the beneficial effects that:
1. the ejector with the continuously adjustable nozzle height provided by the invention realizes the linear motion of the lower movable plate through the driving mechanism, the upper movable plate can be synchronously linked to move in the motion process of the lower movable plate, the nozzle height is continuously adjusted through the linkage motion between the upper movable plate and the lower movable plate, and meanwhile, when the nozzle height of the jet outlet is adjusted, the ejector does not need to be disassembled, so that the nozzle height is dynamically adjusted under the working condition of the ejector.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an ejector provided by the invention, with the nozzle height being continuously adjustable;
FIG. 2 is a schematic top view of FIG. 1;
the drawings are labeled as follows:
1-jet flow outlet, 2-upper movable plate, 3-shell, 4-gear, 5-rotating wheel, 6-lower movable plate, 7-guide groove, 8-rack, 9-screw pair and 10-rotation pair.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, or the orientation or the positional relationship which is usually understood by those skilled in the art, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, cannot be understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be further noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases by those skilled in the art; the drawings in the embodiments are used for clearly and completely describing the technical scheme in the embodiments of the invention, and obviously, the described embodiments are a part of the embodiments of the invention, but not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
As shown in fig. 1 and fig. 2, in the present embodiment, a jet device with continuously adjustable nozzle height is specifically disclosed, which associates the nozzle height (corresponding to the short side of the triangle) of the jet device with the extension amount (corresponding to the long side of the triangle) of the movable plate according to the triangle geometric similarity amplification principle, so as to realize the amplification of several times of the adjustment stroke, thereby ensuring the accuracy of adjusting the nozzle height. The ejector can realize continuous adjustment of the height of the nozzle, and can perform dynamic adjustment under the condition of not disassembling the ejector. The jet device mainly comprises the following parts: the casing 3, go up movable plate 2, lower movable plate 6 and actuating mechanism, its specific design is as follows:
a lower movable plate 6 is slidably provided in the housing 3, and a driving mechanism for driving the lower movable plate 6 to slide freely is provided in the lower movable plate 6, so that the lower movable plate 6 is driven to slide freely in the horizontal linear direction in the housing 3 by the driving mechanism, and further, the distance L between the housing 3 and the lower movable plate 6 is changed.
In order to realize the free sliding that can drive lower movable plate 6, the actuating mechanism is designed as follows, including:
firstly, a screw pair 9 is arranged on the shell 3, the screw pair 9 is provided with a screw rod, the screw rod is in threaded connection with the screw pair 9 so as to convert the rotation of the screw rod into linear displacement motion, and the screw rod is provided with a driving pair for driving the screw rod to rotate; the jet height of the ejector is mainly adjusted by the driving pair in a mode of rotating the rotating wheel 5, the driving pair is provided with the rotating wheel 5 or a driving motor connected with the screw rod, and if the rotating wheel 5 is selected, a worker can manually drive the rotating wheel 5 to rotate; if the screw rod is a driving motor, the screw rod can be driven to rotate under the action of the driving motor.
A rotary pair 10 is rotatably sleeved on the screw rod, the rotary pair 10 can freely rotate relative to the screw rod but the rotary pair 10 cannot freely slide relative to the screw rod, the rotary pair 10 is connected with the lower movable plate 6, and the rotary pair 10 and the screw rod synchronously displace to drive the lower movable plate 6 to move, namely: in the process of rotation of the screw rod, the screw rod and the screw pair 9 are interacted to realize that the screw rod can displace in the axis direction, and due to relative rotation and relative non-movement between the rotary pair 10 and the screw rod, the displacement motion of the screw rod can be linked with the lower movable plate 6 to perform displacement motion.
An upper movable plate 2 is arranged in the shell 3 in a sliding mode, the upper movable plate 2 is arranged in an inclined mode relative to a lower movable plate 6, an included angle between the upper movable plate 2 and the lower movable plate 6 is alpha, a jet flow outlet 1 is formed between the upper movable plate 2 and the lower movable plate 6, and the upper movable plate 2 moves in a linkage mode with the lower movable plate 6 through a transmission pair. In practical application, the value range of α is set to be between 0 ° and 180 °, as shown in fig. 1, α is selected to be an acute angle, and at this time, the moving direction between the upper movable plate 2 and the lower movable plate 6 is the same direction; of course, α can also be selected as an obtuse angle, and when the angle is obtuse, the relative movement direction between the upper movable plate 2 and the lower movable plate 6 is the relative direction; wherein the spout height of the jet outlet 1 is continuously adjusted by a linkage motion. In order to realize the linkage motion between the upper movable plate 2 and the lower movable plate 6, the transmission pair realizes the synchronous, equidirectional and same-stroke motion between the upper movable plate 6 and the lower movable plate 6, and specifically, the transmission pair comprises the following components:
a. the racks 8 are respectively arranged on the upper movable plate 2 and the lower movable plate 6, the upper rack 8 and the lower rack 8 are approximately positioned at corresponding positions, or the racks 8 have enough length to ensure that the racks 8 can be effectively meshed with the gear 4 during the movement process;
b. and the gear 4 groups are connected with the racks 8 in a transmission way through the gear 4 groups. Wherein, 4 groups of gears include:
the upper gear 4 is rotatably arranged on the shell 3, and the upper gear 4 is in meshing transmission with the rack 8 on which the upper movable plate 2 is arranged; and the lower gear 4 is in meshing transmission with the upper gear 4, the lower gear 4 is also rotatably arranged on the shell 3, and the lower gear 4 is in meshing transmission with a rack 8 on which the lower movable plate 6 is arranged.
In order to ensure that the upper movable plate 2 and the lower movable plate 6 can slide freely according to a predetermined route, a guide groove 7 respectively matched with the upper movable plate 2 and the lower movable plate 6 is arranged in the shell 3, and one end parts of the upper movable plate 2 and the lower movable plate 6 extend out of the shell 3 to form the jet outlet 1.
In practical use, the jet outlet 1 is adjusted as follows:
by rotating the rotating wheel 5, the lower movable plate 6 is driven by the screw rod through the rotary pair 10 to linearly move along the corresponding guide groove 7, so that the distance L between the shell 3 and the lower movable plate 6 is changed, and the change quantity delta L is equal to theta multiplied by S;
in the process of linear motion of the lower movable plate 6, the upper movable plate 2 is driven to move along the corresponding guide groove 7 through the transmission pair, so that the height h of the nozzle is adjusted.
The specific principle is as follows: because the upper movable plate 2 and the lower movable plate 6 have an included angle alpha in the moving direction, the height h of the jet ejector nozzle changes along with the upper movable plate 6 and the lower movable plate 6 in the moving process, the change quantity delta h is approximately equal to k x delta L, and the amplification coefficient k is alpha x pi/180.
In the operation process of the ejector provided by the embodiment, according to the triangle geometric similarity amplification principle, the adjustment range of the nozzle height of the ejector is linearly mapped into the linear stroke range which is multiplied by the adjustment range of the nozzle height of the ejector through the transmission pair, and the linear stroke of the lower movable plate 6 is continuously adjusted through the rotation of the lead screw, so that the high-precision continuous adjustment of the nozzle height is realized.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (8)
1. An ejector with continuously adjustable jet height, characterized in that it comprises:
the lower movable plate is arranged in a sliding manner and is provided with a driving mechanism for driving the lower movable plate to freely slide;
the jet flow outlet is formed between the upper movable plate and the lower movable plate, and the upper movable plate and the lower movable plate perform linkage motion through a transmission pair;
wherein the height of the nozzle of the jet outlet is continuously adjusted by the linkage motion.
2. The ejector with continuously adjustable jet height according to claim 1, further comprising:
the jet flow outlet is formed by extending one end parts of the upper movable plate and the lower movable plate out of the shell.
3. The ejector with the continuously adjustable nozzle height as claimed in claim 1, wherein the housing is provided therein with guide grooves respectively matching the upper movable plate and the lower movable plate.
4. The ejector of claim 1 wherein said drive mechanism comprises:
the screw pair is provided with a screw rod, and the screw rod is provided with a driving pair for driving the screw rod to rotate;
the rotary pair is rotatably sleeved on the screw rod, the rotary pair is connected with the lower movable plate, and the rotary pair and the screw rod synchronously displace to drive the lower movable plate to move.
5. The ejector with the continuously adjustable nozzle height as claimed in claim 1, wherein the driving pair is provided as a rotating wheel or a driving motor connected with a screw rod.
6. The ejector jet with continuously adjustable jet height of claim 1, wherein the transmission pair comprises:
the racks are respectively arranged on the upper movable plate and the lower movable plate;
and the racks are in transmission connection through the gear sets.
7. The ejector continuously adjustable in jet height of claim 1, wherein said gear train comprises:
the upper gear is in meshed transmission with the rack where the upper movable plate is located;
and the lower gear is in meshing transmission with the rack where the lower movable plate is positioned.
8. The ejector with the continuously adjustable nozzle height as claimed in claim 1, wherein the lower movable plate is slidably disposed in a horizontal straight direction, and the upper movable plate is disposed in an inclined manner with respect to the lower movable plate with an included angle α therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011021309.0A CN112295803B (en) | 2020-09-25 | 2020-09-25 | Jet device with continuously adjustable nozzle height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011021309.0A CN112295803B (en) | 2020-09-25 | 2020-09-25 | Jet device with continuously adjustable nozzle height |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112295803A true CN112295803A (en) | 2021-02-02 |
| CN112295803B CN112295803B (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011021309.0A Active CN112295803B (en) | 2020-09-25 | 2020-09-25 | Jet device with continuously adjustable nozzle height |
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| CN (1) | CN112295803B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030122A (en) * | 1987-06-25 | 1989-01-04 | 联合工艺公司 | The divergent flap actuation system that is used for two-dimensional exhaust nozzles |
| CA2792968A1 (en) * | 2010-04-20 | 2011-10-27 | Aircelle | Nacelle for an aircraft engine with variable cross-section nozzle |
| CN204344840U (en) * | 2014-12-07 | 2015-05-20 | 浙江盛源空压机制造有限公司 | One converts reciprocating mechanism to by rotary motion |
| CN104975983A (en) * | 2015-07-09 | 2015-10-14 | 中国航空工业集团公司沈阳发动机设计研究所 | Novel binary contracting nozzle |
| CN105114581A (en) * | 2015-09-11 | 2015-12-02 | 重庆市永川区天堂化工厂 | Rolling ball spiral-type transmission device |
| CN106762859A (en) * | 2015-11-19 | 2017-05-31 | 中国石油天然气股份有限公司 | Ejector and fluidic system |
| CN108894890A (en) * | 2018-08-27 | 2018-11-27 | 西北工业大学 | A kind of tiny engine adjustable orifice |
| CN209430726U (en) * | 2018-12-24 | 2019-09-24 | 珠海正航科技有限公司 | A kind of part synchronization mechanism of multi-direction operation |
| CN111532419A (en) * | 2020-04-03 | 2020-08-14 | 中国空气动力研究与发展中心低速空气动力研究所 | Ring volume control unit for improving supersonic coanda jet flow adhesion pressure ratio |
-
2020
- 2020-09-25 CN CN202011021309.0A patent/CN112295803B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030122A (en) * | 1987-06-25 | 1989-01-04 | 联合工艺公司 | The divergent flap actuation system that is used for two-dimensional exhaust nozzles |
| CA2792968A1 (en) * | 2010-04-20 | 2011-10-27 | Aircelle | Nacelle for an aircraft engine with variable cross-section nozzle |
| CN204344840U (en) * | 2014-12-07 | 2015-05-20 | 浙江盛源空压机制造有限公司 | One converts reciprocating mechanism to by rotary motion |
| CN104975983A (en) * | 2015-07-09 | 2015-10-14 | 中国航空工业集团公司沈阳发动机设计研究所 | Novel binary contracting nozzle |
| CN105114581A (en) * | 2015-09-11 | 2015-12-02 | 重庆市永川区天堂化工厂 | Rolling ball spiral-type transmission device |
| CN106762859A (en) * | 2015-11-19 | 2017-05-31 | 中国石油天然气股份有限公司 | Ejector and fluidic system |
| CN108894890A (en) * | 2018-08-27 | 2018-11-27 | 西北工业大学 | A kind of tiny engine adjustable orifice |
| CN209430726U (en) * | 2018-12-24 | 2019-09-24 | 珠海正航科技有限公司 | A kind of part synchronization mechanism of multi-direction operation |
| CN111532419A (en) * | 2020-04-03 | 2020-08-14 | 中国空气动力研究与发展中心低速空气动力研究所 | Ring volume control unit for improving supersonic coanda jet flow adhesion pressure ratio |
Non-Patent Citations (1)
| Title |
|---|
| 王爱平，朱同波，翟富林，等: "《机械零件与机构》", 28 February 2019, 北京希望电子出版社 * |
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