Boundary layer measuring rake for wind tunnel measurement
By designing the measurement block that can move horizontally and vertically, the gap between the catheter is covered, and the problem of incomplete and accurate data in the existing technologies causes incomplete and accurate data, and achieves more comprehensive data collection and higher measurement data accuracy Essence
Patent Information
- Application Number
- CN202323631823.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The existing surface layer measurement rakes used for wind tunnel measurements have different data collected by each conduit due to the spacing between the conduits, resulting in insufficient comprehensive and accurate measurement data.
The measurement block is designed with a metastic layer. The measurement block can move horizontally and vertically, so that the ducts on the measurement block can cover the gap between the catheter and thus sampling. The rake body drives the gear and screw system through the motor to drive the horizontal and vertical slider to move the measurement block.
By covering the gap between the catheter, more comprehensive data collection is achieved, avoiding the data differences of each catheter collection, and improving the comprehensiveness and accuracy of the measurement data.
Smart Images
Figure CN222419461U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of measuring rakes, and more specifically, particularly relates to a boundary layer measuring rake used for wind tunnel measurement. Background Art
[0002] By measuring the airflow parameters of a wind tunnel, we can not only qualitatively but also quantitatively understand the airflow quality at various locations in the wind tunnel. Static pressure measurement is one of the most important items in measuring airflow parameters in a wind tunnel. The existing boundary layer measurement rake used for wind tunnel measurement guides the airflow to the measuring instrument through a duct. There are intervals between the ducts, and the data collected by each duct are different, which makes the measurement data not comprehensive and accurate. Therefore, a boundary layer measurement rake for wind tunnel measurement is proposed. Utility Model Content
[0003] In view of the shortcomings of the prior art, the utility model provides a boundary layer measurement rake for wind tunnel measurement. The measuring block can move laterally and vertically so that the ducts on the measuring block can cover the gaps between the ducts, thereby comprehensively sampling, so as to solve the problem proposed in the above background technology that there are gaps between the ducts, the data collected by each duct are different, and the measurement data is not comprehensive and accurate enough.
[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a boundary layer measurement rake for wind tunnel measurement, including a rake body, a mounting groove is provided on one side of the rake body, a measuring block is provided on the inner side of the mounting groove, a baffle is fixed on the outer side of the measuring block, a wire-releasing groove is provided on the inner side of the mounting groove, a plurality of guide tubes are provided inside the measuring block, two horizontal slide grooves and two vertical slide grooves are provided on the side of the measuring block close to the rake body, a mounting plate is also fixed on the inner side of the mounting groove, two motors are fixed on one side of the mounting plate, the output end of the motor passes through the interior of the mounting plate and is coaxially fixed with a first incomplete toothed disc and a second incomplete toothed disc, a first gear and a second gear are meshed and transmitted between the first incomplete toothed disc and the second incomplete toothed disc, a first screw rod and a second screw rod are coaxially fixed on one end of the rotating shaft of the first gear and the second gear, and a horizontal slider and a vertical slider are respectively threadedly connected on the outer side of the first screw rod and the outer side of the second screw rod.
[0005] As a preferred technical solution of the present utility model, the length of the measuring block is smaller than the length of the mounting groove, and the width of the measuring block is smaller than the width of the mounting groove.
[0006] As a preferred technical solution of the present utility model, the length of the baffle is greater than the length of the mounting groove, and the width of the baffle is less than the width of the mounting groove.
[0007] As a preferred technical solution of the present utility model, the first incomplete toothed disc and the second incomplete toothed disc are arranged in opposite directions.
[0008] As a preferred technical solution of the present utility model, the first gear and the second gear are arranged at an angle of ninety degrees.
[0009] As a preferred technical solution of the utility model, the outer side of the first screw rod and the outer side of the second screw rod are both rotatably connected to two supports, and one end of the support is fixedly connected to the outer side of the mounting plate.
[0010] As a preferred technical solution of the present utility model, the outer side of the horizontal slider is slidably connected to the inner side of the horizontal slide groove, and the outer side of the vertical slider is slidably connected to the inner side of the vertical slide groove.
[0011] The utility model provides a boundary layer measurement rake for wind tunnel measurement, which has the following beneficial effects:
[0012] 1. The boundary layer measurement rake used for wind tunnel measurement has a measuring block that can move horizontally and vertically, so that the ducts on the measuring block can cover the gaps between the ducts, thereby performing comprehensive sampling and avoiding the problem that there are gaps between the ducts, the data collected by each duct are different, and the measurement data is not comprehensive and accurate enough.
[0013] 2. The boundary layer measuring rake used for wind tunnel measurement has a reasonable and compact structure design and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 The utility model is a schematic diagram of the overall structure of a boundary layer measurement rake used for wind tunnel measurement.
[0015] Figure 2 The utility model is a schematic diagram of the disassembled structure of a boundary layer measurement rake used for wind tunnel measurement.
[0016] Figure 3 The utility model is a boundary layer measurement rake for wind tunnel measurement Figure 2 A is an enlarged schematic diagram.
[0017] In the figure: 1. rake body; 2. mounting groove; 3. measuring block; 4. baffle; 5. wire release groove; 6. guide tube; 7. horizontal slide groove; 8. vertical slide groove; 9. mounting plate; 10. motor; 11. first incomplete toothed disc; 12. second incomplete toothed disc; 13. first gear; 14. second gear; 15. first screw rod; 16. second screw rod; 17. horizontal slider; 18. vertical slider. DETAILED DESCRIPTION
[0018] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.
[0019] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0021] See also Figures 1 to 3 The utility model provides a technical solution: a boundary layer measurement rake for wind tunnel measurement, comprising a rake body 1, a mounting groove 2 is provided on one side of the rake body 1, a measuring block 3 is provided on the inner side of the mounting groove 2, a baffle 4 is fixed on the outer side of the measuring block 3, a wire release groove 5 is provided on the inner side of the mounting groove 2, a plurality of guide tubes 6 are provided inside the measuring block 3, two horizontal slide grooves 7 and two vertical slide grooves 8 are provided on the side of the measuring block 3 close to the rake body 1, a mounting plate 9 is also fixed on the inner side of the mounting groove 2, two motors 10 are fixed on one side of the mounting plate 9, the output end of the motor 10 passes through the interior of the mounting plate 9 and is coaxially fixed with a first incomplete toothed disc 11 and a second incomplete toothed disc 12, a first gear 13 and a second gear 14 are meshed and transmitted between the first incomplete toothed disc 11 and the second incomplete toothed disc 12, and the first gear 13 and the second gear 14 have rotating shafts. A first screw rod 15 and a second screw rod 16 are coaxially fixed at one end, and a horizontal slider 17 and a vertical slider 18 are respectively threadedly connected to the outer side of the first screw rod 15 and the outer side of the second screw rod 16. The length of the measuring block 3 is less than the length of the mounting groove 2, and the width of the measuring block 3 is less than the width of the mounting groove 2. The length of the baffle plate 4 is greater than the length of the mounting groove 2, and the width of the baffle plate 4 is less than the width of the mounting groove 2. The first incomplete toothed disc 11 and the second incomplete toothed disc 12 are arranged in opposite directions, and the first gear 13 and the second gear 14 are arranged at a ninety-degree angle. The outer side of the first screw rod 15 and the outer side of the second screw rod 16 are rotatably connected to two supports, and one end of the support is fixedly connected to the outer side of the mounting plate 9, the outer side of the horizontal slider 17 is slidably connected to the inner side of the horizontal slide groove 7, and the outer side of the vertical slider 18 is slidably connected to the inner side of the vertical slide groove 8;
[0022] The motor 10 drives the first incomplete toothed disc 11 and the second incomplete toothed disc 12 to rotate. During this process, the first incomplete toothed disc 11 drives the first gear 13 and the second gear 14 to rotate a certain number of circles in turn and then disengages from them. The first gear 13 and the second gear 14 drive the transverse slider 17 and the vertical slider 18 to move through the first screw rod 15 and the second screw rod 16. When the transverse slider 17 moves, the measuring block 3 is pushed to move upward, and when the vertical slider 18 moves, the measuring block 3 is pushed to move rightward, so that the catheter 6 on the measuring block 3 can cover the gap between the catheters 6, thereby fully sampling. Afterwards, the second incomplete toothed disc 12 drives the first gear 13 and the second gear 14 to rotate in the opposite direction for a certain number of circles in turn, so that the first screw rod 15 and the second screw rod 16 drive the transverse slider 17 and the vertical slider 18 back to their original positions, thereby returning the measuring block 3 to their original positions. Through the above process, the problem of intervals between the catheters, differences in the data collected by each catheter, and the measurement data being not comprehensive and accurate is avoided.
[0023] Specific usage and function of this embodiment: The utility model drives the first incomplete toothed disc 11 and the second incomplete toothed disc 12 to rotate through the motor 10. During this process, the first incomplete toothed disc 11 drives the first gear 13 and the second gear 14 to rotate a certain number of circles in turn, and then disengages from them. The first gear 13 and the second gear 14 drive the transverse slider 17 and the vertical slider 18 to move through the first screw rod 15 and the second screw rod 16. When the transverse slider 17 moves, it pushes the measuring block 3 to move upward, and when the vertical slider 18 moves, it pushes the measuring block 3 to move to the right, so that the conduit 6 on the measuring block 3 can cover the gap between the conduits 6, thereby comprehensively sampling. Afterwards, the second incomplete toothed disc 12 drives the first gear 13 and the second gear 14 to rotate in the opposite direction for a certain number of circles in turn, so that the first screw rod 15 and the second screw rod 16 drive the transverse slider 17 and the vertical slider 18 back to their original positions, thereby returning the measuring block 3 to their original positions.
[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A boundary layer measurement rake for wind tunnel measurement, comprising a rake body (1), characterized in that: A mounting groove (2) is provided on one side of the rake body (1), a measuring block (3) is provided on the inner side of the mounting groove (2), a baffle (4) is fixed on the outer side of the measuring block (3), a wire release groove (5) is provided on the inner side of the mounting groove (2), a plurality of guide tubes (6) are provided inside the measuring block (3), two transverse slide grooves (7) and two vertical slide grooves (8) are provided on the side of the measuring block (3) close to the rake body (1), a mounting plate (9) is also fixed on the inner side of the mounting groove (2), two motors (10) are fixed on one side of the mounting plate (9), and the motors (10) ) passes through the interior of the mounting plate (9) and is coaxially fixed with a first incomplete toothed disc (11) and a second incomplete toothed disc (12); a first gear (13) and a second gear (14) are meshed and transmitted between the first incomplete toothed disc (11) and the second incomplete toothed disc (12); a first screw rod (15) and a second screw rod (16) are coaxially fixed to one end of the rotating shaft of the first gear (13) and the second gear (14); and a transverse slider (17) and a vertical slider (18) are respectively threadedly connected to the outer side of the first screw rod (15) and the outer side of the second screw rod (16).
2. A boundary layer measurement rake for wind tunnel measurement according to claim 1, characterized in that: The length of the measuring block (3) is smaller than the length of the mounting groove (2), and the width of the measuring block (3) is smaller than the width of the mounting groove (2).
3. A boundary layer measurement rake for wind tunnel measurement according to claim 1, characterized in that: The length of the baffle plate (4) is greater than the length of the mounting groove (2), and the width of the baffle plate (4) is less than the width of the mounting groove (2).
4. A boundary layer measurement rake for wind tunnel measurement according to claim 1, characterized in that: The first incomplete toothed disc (11) and the second incomplete toothed disc (12) are arranged in opposite directions.
5. The boundary layer measurement rake for wind tunnel measurement according to claim 1, characterized in that: The first gear (13) and the second gear (14) are arranged at an angle of ninety degrees.
6. A boundary layer measurement rake for wind tunnel measurement according to claim 1, characterized in that: The outer sides of the first screw rod (15) and the second screw rod (16) are both rotatably connected to two supports, and one end of the support is fixedly connected to the outer side of the mounting plate (9).
7. The boundary layer measurement rake for wind tunnel measurement according to claim 1, characterized in that: The outer side of the transverse sliding block (17) is slidably connected to the inner side of the transverse sliding groove (7), and the outer side of the vertical sliding block (18) is slidably connected to the inner side of the vertical sliding groove (8).