CN210603818U - Supersonic wind tunnel flow calibration and measurement pressure hose protection device - Google Patents
Supersonic wind tunnel flow calibration and measurement pressure hose protection device Download PDFInfo
- Publication number
- CN210603818U CN210603818U CN201922142514.1U CN201922142514U CN210603818U CN 210603818 U CN210603818 U CN 210603818U CN 201922142514 U CN201922142514 U CN 201922142514U CN 210603818 U CN210603818 U CN 210603818U
- Authority
- CN
- China
- Prior art keywords
- wind tunnel
- protection mechanism
- cover
- hose
- supersonic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model discloses a supersonic wind-tunnel flow school pressure measurement hose protection device. The protection device is positioned behind the bent blade bracket at the wind tunnel test section along the wind tunnel airflow direction and comprises an inner layer protection mechanism and an outer layer protection mechanism, and the inner layer protection mechanism is integrally arranged in the outer layer protection mechanism; the outer protection mechanism is composed of a rear protection cover, an installation base, a front protection cover and a cover plate, and a communicated cavity is formed inside the outer protection mechanism and used for accommodating the inner protection mechanism. And after being collected, the pressure measuring hose led out from the cross pressure measuring bent frame penetrates out of the protecting device and enters the wind tunnel parking chamber to be connected with a wind tunnel pressure measuring system. The protection device adopts the metal corrugated pipe to protect the pressure measuring hose, the metal corrugated pipe moves back and forth along with the lead screw and acts with the outer protection mechanism together, the influence and the damage of supersonic airflow on the pressure measuring hose are avoided, the pressure measuring hose of the flow calibration mechanism is effectively protected, the problem of wiring of multiple pressure measuring pipes in an inner channel of the supersonic wind tunnel is solved, and the reliable acquisition of test pressure measurement data of the supersonic wind tunnel is ensured.
Description
Technical Field
The utility model belongs to the technical field of the wind tunnel test, concretely relates to supersonic speed wind-tunnel flow is proofreaded and is surveyed pressure hose protection device.
Background
During the supersonic wind tunnel flow field calibration, a moving and measuring mechanism is adopted to measure the pressure distribution of the test section. The moving and measuring mechanism consists of a servo motor, a transverse transmission shaft, a bevel gear pair and a lead screw nut pair, and converts the rotary motion of the motor into the front and back motion of a lead screw. In the test process, the moving and measuring mechanism adopts a zero starting and turning-off operation mode, when the supersonic wind tunnel smoothly establishes a supersonic flow field, the moving and measuring mechanism operates to the foremost position and then returns in a stepped manner, and the pressure distribution of each given position is measured. The screw rod of the moving and measuring mechanism is of a hollow structure, and the pressure measuring pipe penetrates through the screw rod and is connected with a scanning valve installed in the parking chamber, so that the pressure of the probe is measured. The pressure measuring pipe can not bear the pneumatic load when the supersonic wind tunnel blows, and the pressure measuring pipe swings with wind in the blowing process of the supersonic wind tunnel, so that the pressure measuring pipe is damaged.
In order to solve the problem that a pressure measuring pipe of a moving and measuring mechanism is directly exposed in a channel in a wind tunnel after penetrating through a screw rod in the blowing process of the supersonic wind tunnel, a special supersonic wind tunnel flow correcting and pressure measuring hose protection device is necessary to be developed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a supersonic speed wind-tunnel flow is proofreaded and is surveyed pressure hose protection device is provided.
The utility model discloses a supersonic wind tunnel flow calibration pressure measurement hose protection device, which is characterized in that along the wind tunnel airflow direction, the pressure measurement hose protection device is positioned behind a wind tunnel test section bent knife bracket and comprises an inner layer protection mechanism and an outer layer protection mechanism, and the inner layer protection mechanism is integrally arranged in the outer layer protection mechanism; the inner layer protection mechanism consists of a hollow adapter and a metal corrugated pipe, the front end of the hollow adapter is connected with a hollow lead screw of the movement and measurement mechanism, and the rear end of the hollow adapter is connected with the metal corrugated pipe; the outer layer protection mechanism consists of a rear protection cover, a mounting base, a front protection cover and a cover plate, the lower part of the mounting base is fixed on the wind tunnel indoor housing through a connecting screw, and the cover plate, the front protection cover and the rear protection cover are sequentially fixed on the upper part of the mounting base from front to back; the two cover plates are symmetrically arranged on the left side and the right side of the mounting base through connecting countersunk head screws; the front protective cover is U-shaped; the rear protective cover is also U-shaped, the hollow screw rod, the hollow adapter and the metal corrugated pipe are coated in the rear protective cover, and the length of the rear protective cover is greater than the forward and backward movement distance of the hollow screw rod, the hollow adapter and the metal corrugated pipe; the front protective cover and the rear protective cover are fixed on the mounting base through respective connecting bolt groups; after rear protective cover, preceding safety cover, apron and installation base fixed mounting, inside has the cavity of UNICOM for hold cavity lead screw, cavity adapter, corrugated metal pipe and pressure measurement hose, after the pressure measurement hose that draws forth from cross pressure measurement framed bent, wear out through cavity lead screw, cavity adapter and corrugated metal pipe, get into wind-tunnel and stay the room and be connected with wind-tunnel pressure measurement system.
The metal corrugated pipe body is a metal woven corrugated pipe, and two ends of the metal corrugated pipe are provided with movable connecting nuts.
A guide bolt group is fixed on the rear protective cover and comprises a front guide bolt group and a rear guide bolt group, the front guide bolt group consists of series bolts which are close to the wind tunnel curved knife and are arranged upwards from front to rear arcs, and the rear guide bolt group consists of series bolts which are close to the tail end of the rear protective cover and are arranged upwards from front to rear arcs; the tail bolts of the front guide bolt group are higher than the head bolts of the rear guide bolt group and lower than the tail bolts of the rear guide bolt group.
The rear protective cover is provided with air pressure balancing holes which are symmetrical at the left side and the right side.
The projection of the outer layer protection mechanism in the incoming flow direction of the airflow is positioned in the projection of the curved knife bracket of the wind tunnel test section in the incoming flow direction of the airflow, and the projection area is smaller than that of the curved knife bracket of the wind tunnel test section in the incoming flow direction of the airflow.
The utility model discloses a corrugated metal pipe among supersonic speed wind-tunnel flow school pressure measurement hose protection device is existing flexible and has certain intensity again, and the needs that move together with the cavity lead screw can be satisfied in the flexibility, and the impact of supersonic speed air current to the inside pressure measurement hose of corrugated metal pipe can be resisted to intensity.
The utility model discloses a pressure measurement hose among the supersonic speed wind-tunnel flow school pressure measurement hose protection device walks the line from hollow lead screw, corrugated metal pipe and cavity, does not directly contact with wind-tunnel inner channel supersonic speed air current.
The utility model discloses a supersonic speed wind-tunnel flow school pressure measurement hose protection device in guide bolt group has guaranteed that the corrugated metal pipe of parcel pressure measurement hose is controlled in the motion track of cavity.
The utility model discloses a back safety cover left and right sides symmetry's among the supersonic speed wind-tunnel flow school pressure hose protection device atmospheric pressure balancing hole has guaranteed that cavity interior air pressure is the same with wind-tunnel interior runner pressure.
The utility model discloses an outer protection mechanism among supersonic speed wind-tunnel flow school pressure hose protection device is located the projection of wind-tunnel test section tulwar support in the projection of air current incoming flow direction, and projected area is less than the projected area of wind-tunnel test section tulwar support, promptly the utility model discloses a supersonic speed wind-tunnel flow school pressure hose protection device does not increase the degree of blockage of flowing school device. Simultaneously, the adjustable wallboard of supersonic speed wind-tunnel excess extension section still can be according to wind-tunnel operating mode demand and do the rotation regulation through rotating the hinge, that is to say, the utility model discloses a supersonic speed wind-tunnel flow school voltage measuring hose protection device can not produce the structure to the motion of the adjustable wallboard of wind-tunnel excess extension section and interfere, can satisfy the pressure measurement demand of all mach numbers of supersonic speed wind-tunnel flow school.
The utility model discloses a supersonic wind-tunnel flow school pressure measurement hose protection device adopts corrugated metal pipe protection pressure measurement hose, and corrugated metal pipe has avoided supersonic air current to the influence and the destruction of pressure measurement hose along with lead screw seesaw, with outer protection mechanism combined action, has effectively protected the pressure measurement hose of flow school mechanism, has solved the many pressure measurement pipes of supersonic wind-tunnel inner channel and has walked the line problem, has guaranteed the reliable acquisition of supersonic wind-tunnel test pressure measurement data.
The utility model discloses a supersonic speed wind-tunnel flow school pressure measurement hose protection device simple structure, reliable function, simple to operate can satisfy the pressure measurement demand of all mach numbers of supersonic speed wind-tunnel flow school.
Drawings
FIG. 1 is a schematic structural view of the supersonic wind tunnel flow calibration pressure hose protection device of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an enlarged view of section I of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 1 (with the front and rear boots removed);
FIG. 5 is a cross-sectional view C-C of FIG. 1 (with the displacement mechanism, pressure hose removed);
FIG. 6 is a cross-sectional view D-D of FIG. 4;
fig. 7 is an enlarged cross-sectional view taken along line E-E of fig. 4.
In the figure, 1, a cross pressure measuring bent frame 2, a wind tunnel test section bent knife bracket 3, a moving measuring mechanism 4, a rear protective cover 5, a guide bolt group 6, a hollow adapter 7, a metal corrugated pipe 8, a connecting bolt group 9, a mounting base 10, a connecting screw 11, a front protective cover 12, a connecting countersunk screw 13, a cover plate 14, a pressure measuring hose 15, a rotating hinge 16, an adjustable wall plate 17, a wind tunnel indoor housing 18 and an air pressure balance hole are arranged;
301. the servo motor 302, the transverse transmission shaft 303, the driving bevel gear 304, the driven bevel gear 305, the hollow screw 306, the guide key 307 and the middle bracket.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 and 4, the present embodiment applies the supersonic wind tunnel flow calibration and pressure measurement hose protection device of the present invention to a supersonic wind tunnel flow calibration device, the flow calibration device is formed by connecting a cross pressure measurement bent frame 1 and a moving and measuring mechanism 3, the cross pressure measurement bent frame 1 is fixed on a wind tunnel test section bent knife bracket 2 through a middle bracket 307 on the moving and measuring mechanism 3; the moving and measuring mechanism 3 drives a transverse transmission shaft 302 to rotate through a servo motor 301, the transverse transmission shaft 302 is connected with a driving bevel gear 303, the driving bevel gear 303 drives a driven bevel gear 304 to rotate, the driven bevel gear 304 is of an outer bevel gear and inner hollow thread structure, the inner hollow thread of the driven bevel gear 304 and a hollow lead screw 305 form a lead screw nut pair, and the hollow lead screw 305 is driven to do front-back linear motion through a guide key 306 fixed on a middle support 307.
As shown in fig. 1, 2, 3, 5, 6 and 7, along the direction of the wind tunnel airflow, the supersonic wind tunnel flow calibration pressure hose protection device of the utility model is located behind the wind tunnel test section bending tool support 2, and comprises an inner layer protection mechanism and an outer layer protection mechanism, wherein the inner layer protection mechanism is integrally arranged in the outer layer protection mechanism; the inner layer protection mechanism consists of a hollow adapter 6 and a metal corrugated pipe 7, the front end of the hollow adapter 6 is connected with a hollow screw 305 of the movement and measurement mechanism 3, and the rear end of the hollow adapter 6 is connected with the metal corrugated pipe 7; the outer layer protection mechanism consists of a rear protection cover 4, a mounting base 9, a front protection cover 11 and a cover plate 13, the lower part of the mounting base 9 is fixed on an indoor housing 17 of the wind tunnel through a connecting screw 10, and the cover plate 13, the front protection cover 11 and the rear protection cover 4 are sequentially fixed on the upper part of the mounting base 9 from front to back; the two cover plates 13 are symmetrically arranged at the left side and the right side of the mounting base 9 through connecting sunk screws 12; the front protective cover 11 is U-shaped; the rear protective cover 4 is also U-shaped, the rear protective cover 4 covers the hollow screw 305, the hollow adapter 6 and the metal corrugated pipe 7, and the length of the rear protective cover 4 is larger than the front-back movement distance of the hollow screw 305, the hollow adapter 6 and the metal corrugated pipe 7; the front protective cover 11 and the rear protective cover 4 are fixed on the mounting base 9 through respective connecting bolt groups 8; after rear protection cover 4, preceding safety cover 11, apron 13 and installation base 9 fixed mounting, the inside cavity that has the UNICOM for hold cavity lead screw 305, cavity adapter 6, corrugated metal pipe 7 and pressure measurement hose 14, after the pressure measurement hose 14 that draws forth from cross pressure measurement framed bent 1 collects, wear out through cavity lead screw 305, cavity adapter 6 and corrugated metal pipe 7, get into wind-tunnel parking room and be connected with wind-tunnel pressure measurement system.
The body of the metal corrugated pipe 7 is a metal woven corrugated pipe, and two ends of the metal corrugated pipe 7 are provided with movable connecting nuts.
A guide bolt group 5 is fixed on the rear protective cover 4, the guide bolt group 5 is divided into a front guide bolt group and a rear guide bolt group, the front guide bolt group consists of series bolts which are close to the wind tunnel curved knife and are arranged upwards from front to rear arcs, and the rear guide bolt group consists of series bolts which are close to the tail end of the rear protective cover 4 and are arranged upwards from front to rear arcs; the tail bolts of the front guide bolt group are higher than the head bolts of the rear guide bolt group and lower than the tail bolts of the rear guide bolt group.
The rear protective cover 4 is provided with air pressure balancing holes 18 which are symmetrical at the left side and the right side.
The projection of the outer layer protection mechanism in the incoming flow direction of the airflow is positioned in the projection of the curved knife bracket 2 in the incoming flow direction of the airflow in the wind tunnel, and the projection area is smaller than that of the curved knife bracket 2 in the incoming flow direction of the airflow in the wind tunnel.
As shown in fig. 1, in the supersonic wind tunnel flow calibration process, because the utility model discloses a supersonic wind tunnel flow calibration pressure hose protection device is located the adjustable wallboard 16's of supersonic wind tunnel super-expanding section groove, and is gapped between the adjustable wallboard 16 for adjustable wallboard 16 still can be according to wind tunnel operating mode demand through rotating hinge 15 and do the rotation regulation, can not produce the structure to the motion of adjustable wallboard 16 and interfere.
Claims (5)
1. A supersonic wind tunnel flow calibration pressure measurement hose protection device is characterized in that along the wind tunnel airflow direction, the pressure measurement hose protection device is positioned behind a wind tunnel test section bent knife bracket (2) and comprises an inner layer protection mechanism and an outer layer protection mechanism, and the inner layer protection mechanism is integrally arranged in the outer layer protection mechanism; the inner layer protection mechanism consists of a hollow adapter (6) and a metal corrugated pipe (7), the front end of the hollow adapter (6) is connected with a hollow lead screw (305) of the moving and measuring mechanism (3), and the rear end of the hollow adapter (6) is connected with the metal corrugated pipe (7); the outer layer protection mechanism consists of a rear protection cover (4), a mounting base (9), a front protection cover (11) and a cover plate (13), the lower part of the mounting base (9) is fixed on a wind tunnel indoor housing (17) through a connecting screw (10), and the cover plate (13), the front protection cover (11) and the rear protection cover (4) are sequentially fixed on the upper part of the mounting base (9) from front to back; the two cover plates (13) are symmetrically arranged at the left side and the right side of the mounting base (9) through connecting countersunk screws (12); the front protective cover (11) is U-shaped; the rear protective cover (4) is also U-shaped, the hollow screw rod (305), the hollow adapter (6) and the metal corrugated pipe (7) are wrapped in the rear protective cover (4), and the length of the rear protective cover (4) is larger than the forward and backward movement distance of the hollow screw rod (305), the hollow adapter (6) and the metal corrugated pipe (7); the front protective cover (11) and the rear protective cover (4) are fixed on the mounting base (9) through respective connecting bolt groups (8); after rear protective cover (4), preceding protective cover (11), apron (13) and installation base (9) fixed mounting, inside has the cavity of UNICOM for hold cavity lead screw (305), cavity adapter (6), corrugated metal pipe (7) and pressure measurement hose (14), pressure measurement hose (14) that follow cross pressure measurement framed bent (1) and draw forth after the cluster, wear out through cavity lead screw (305), cavity adapter (6) and corrugated metal pipe (7), get into the wind tunnel and stay the room and be connected with wind tunnel pressure measurement system.
2. The supersonic wind tunnel flow calibration pressure hose protection device according to claim 1, wherein a pipe body of the metal corrugated pipe (7) is a metal woven corrugated pipe, and two ends of the metal corrugated pipe (7) are provided with movable connection nuts.
3. The supersonic wind tunnel flow calibration pressure hose protection device according to claim 1, wherein a guide bolt group (5) is fixed on the rear protection cover (4), the guide bolt group (5) is divided into a front guide bolt group and a rear guide bolt group, the front guide bolt group is composed of a series of bolts which are close to the wind tunnel curved knife and arranged upwards from front to rear arcs, and the rear guide bolt group is composed of a series of bolts which are close to the tail end of the rear protection cover (4) and arranged upwards from front to rear arcs; the tail bolts of the front guide bolt group are higher than the head bolts of the rear guide bolt group and lower than the tail bolts of the rear guide bolt group.
4. The supersonic wind tunnel flow calibration pressure hose protection device according to claim 1, wherein the rear protection cover (4) is provided with air pressure balance holes (18) which are symmetrical on the left side and the right side.
5. The supersonic wind tunnel flow calibration pressure hose protection device according to claim 1, wherein a projection of the outer layer protection mechanism in an airflow incoming flow direction is located in a projection of the wind tunnel test section bent blade bracket (2) in the airflow incoming flow direction, and a projection area is smaller than a projection area of the wind tunnel test section bent blade bracket (2) in the airflow incoming flow direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922142514.1U CN210603818U (en) | 2019-12-04 | 2019-12-04 | Supersonic wind tunnel flow calibration and measurement pressure hose protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922142514.1U CN210603818U (en) | 2019-12-04 | 2019-12-04 | Supersonic wind tunnel flow calibration and measurement pressure hose protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210603818U true CN210603818U (en) | 2020-05-22 |
Family
ID=70720929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922142514.1U Active CN210603818U (en) | 2019-12-04 | 2019-12-04 | Supersonic wind tunnel flow calibration and measurement pressure hose protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210603818U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112027816A (en) * | 2020-09-16 | 2020-12-04 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel continuous variable-rolling mechanism cable protection method |
| CN113029505A (en) * | 2021-03-12 | 2021-06-25 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel flow field mobile measuring device |
-
2019
- 2019-12-04 CN CN201922142514.1U patent/CN210603818U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112027816A (en) * | 2020-09-16 | 2020-12-04 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel continuous variable-rolling mechanism cable protection method |
| CN112027816B (en) * | 2020-09-16 | 2021-08-17 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel continuous variable-rolling mechanism cable protection method |
| CN113029505A (en) * | 2021-03-12 | 2021-06-25 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel flow field mobile measuring device |
| CN113029505B (en) * | 2021-03-12 | 2023-07-04 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel flow field mobile measurement device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110793745A (en) | Supersonic wind tunnel flow calibration and measurement pressure hose protection device | |
| CN210603818U (en) | Supersonic wind tunnel flow calibration and measurement pressure hose protection device | |
| CN108680331B (en) | A kind of adjustable half flexible jet pipe of more fulcrum side walls | |
| CN108088647B (en) | Five-degree-of-freedom boundary layer measuring system for wind tunnel test | |
| CN202681849U (en) | Double-wire driven glass curtain wall cleaning robot | |
| CN113138061B (en) | Improved wind tunnel air inlet channel test model supporting system | |
| CN112398017B (en) | Electric power cabinet with monitoring, warning and pre-alarming functions | |
| CA1124547A (en) | Device for sampling gases in blast furnace or the like | |
| CN110426174A (en) | A kind of three-dimensional coordinate frame suitable for wind tunnel experiment probe positioning | |
| CN112212766B (en) | Pneumatic type internal diameter detection instrument of building pile foundation pit depths | |
| CN212716710U (en) | Ventilation control device for scenic spot highway tunnel | |
| CN110320003B (en) | Non-contact limiting method for variable-angle mechanism in wind tunnel flow field | |
| CN210033917U (en) | Circulating water cooling tower fan structure | |
| CN109596304B (en) | Subway tunnel similar model test bed with ventilating shaft | |
| CN210893611U (en) | Wind tunnel flow velocity control device | |
| CN114285225A (en) | Flat linear rotating motor | |
| CN212258251U (en) | Overhead transmission line maintenance tool | |
| CN106918435B (en) | Integrated impact cylinder device | |
| CN218190562U (en) | Recognition spraying control system | |
| CN201025294Y (en) | A gemel structure for precise line drive | |
| CN104931223A (en) | Test apparatus capable of automatically adjusting scramjet inlet lip opening angle | |
| CN217873380U (en) | Detection apparatus for colliery is in use main ventilator | |
| CN219037908U (en) | Shield tail clearance measuring device and shield machine | |
| CN220151397U (en) | Mechanical transmission device for accurate wind measurement of full section of mine tunnel | |
| CN221480188U (en) | Multi-wind-direction yarn warehouse blowing nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |