CN211954609U - Wind tunnel anti-collision device - Google Patents
Wind tunnel anti-collision device Download PDFInfo
- Publication number
- CN211954609U CN211954609U CN202021075349.9U CN202021075349U CN211954609U CN 211954609 U CN211954609 U CN 211954609U CN 202021075349 U CN202021075349 U CN 202021075349U CN 211954609 U CN211954609 U CN 211954609U
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- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims 1
- 239000002893 slag Substances 0.000 abstract description 7
- 239000012528 membrane Substances 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 4
- 239000012634 fragment Substances 0.000 description 6
- 230000035939 shock Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model discloses a wind-tunnel buffer stop. The wind tunnel anti-collision device is provided with three rotary drums from front to back in a cavity of a vacuum pipe section, and the three rotary drums are respectively positioned on the left side, the middle and the right side of the cross section where the three rotary drums are positioned; blades are arranged in the middle of the rotating drums, the blades of the first rotating drum are arranged in a direction deviating from the clockwise direction, and the blades of the third rotating drum are arranged in a direction deviating from the counterclockwise direction; the upper part and the lower part of the rotary drum are provided with symmetrical cylinders, and vertical through grooves which are uniformly distributed are formed along the circumferential direction of the cylinders; a rotating shaft is arranged on a vertical central axis of the rotating drum, roller bearings are sleeved at the upper end and the lower end of the rotating shaft, and the rotating shaft is arranged on mounting seats above and below the cross section through a fixing clamping plate; the lower end of the rotating shaft is also sleeved with a tapered roller thrust bearing. The rotary drum in the wind tunnel anti-collision device can rotate around the rotary shaft under the action of test airflow, so that the impact of membrane crushed slag or crushed petals and the like on the wind tunnel anti-collision device is reduced, and the damage of the membrane crushed slag or crushed petals and the like on the tail end of the vacuum pipe section is avoided.
Description
Technical Field
The utility model belongs to hypersonic wind tunnel equipment field, concretely relates to wind-tunnel buffer stop.
Background
In pulse equipment such as a shock tunnel, a high-pressure section and a low-pressure section of the wind tunnel are generally separated by using a diaphragm, when a wind tunnel test is carried out, gas with different pressures is respectively filled into the sections at two sides of the diaphragm, after the diaphragm is broken under the action of the high-pressure gas, shock waves are generated at the diaphragm, the shock waves compress the test gas at the low-pressure section to form high-temperature high-pressure test gas, and the test gas enters a spray pipe to expand to form test gas flow after breaking the diaphragm at the tail end of the low-pressure section.
The diaphragms of impulse wind tunnels such as shock wind tunnels and the like are generally made of metal or polyester fiber materials. The metal membrane may generate slag and larger broken pieces in the process of being torn by the high-pressure airflow. The polyester fiber is vaporized after being melted by a high-temperature gas, but there is a problem that vaporization is incomplete and also slag is generated. The broken pieces or pieces of the diaphragm and the like reach the vacuum pipe section along with the high-speed airflow, and the broken pieces or pieces of the diaphragm and the like have high speed and are easy to damage the vacuum pipe section when impacting the tail end of the vacuum pipe section.
In the document "Development and Application of a New group Test Capability to connect Full-Scale valve and Stage Separation Studies at dual height Conditions" (AIAA 2005-.
At present, it is urgently needed to develop an anti-collision device suitable for shock tunnels and other pulse tunnels.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a wind-tunnel buffer stop is provided.
The utility model discloses a wind tunnel buffer stop, which is characterized in that the wind tunnel buffer stop comprises a rotary drum, a fixed clamping plate, a mounting seat, a roller bearing, a taper roller thrust bearing, a rotating shaft and blades;
the vacuum pipe section is a circular pipe with one end connected with the outlet of the test section and the other end sealed; the vacuum pipe section is fixedly arranged on the ground through a base; three cross sections are arranged in a cavity of the vacuum pipe section from front to back, each cross section is provided with a group of mounting seats which are symmetrically arranged up and down, and the three groups of mounting seats are respectively arranged on the left side, the middle and the right side of the three cross sections; each group of mounting seats is provided with a rotary drum, when the rotary drums are viewed from front to back along the airflow direction, the projections of the three rotary drums are positioned on the cross section of the flow field uniform area of the vacuum pipe section, and the rotary drums with the first cross section and the rotary drums with the third cross section are equal in height and smaller than the rotary drums with the second cross section;
the main body of the rotating drum is a cylinder, a rotating shaft is arranged on a vertical central axis of the rotating drum, blades are arranged in the middle of the rotating drum, the blades of the rotating drum with the first cross section are arranged in a direction deviating from the clockwise direction, and the blades of the rotating drum with the third cross section are arranged in a direction deviating from the counterclockwise direction; the upper part and the lower part of the rotary drum are provided with symmetrical cylinders, and vertical through grooves which are uniformly distributed are formed along the circumferential direction of the cylinders;
the upper end and the lower end of the rotating shaft are sleeved with roller bearings and are arranged on the upper mounting seat and the lower mounting seat through the fixing clamping plates; a tapered roller thrust bearing is sleeved at the lower end of the rotating shaft;
the fixed clamping plates are a group of 2 symmetrically-arranged plate-shaped clamping plates, one end of each plate-shaped clamping plate is a protruding end, and the other end of each plate-shaped clamping plate is a flat end; after the convex ends of the 2 plate-shaped clamping plates are butted, the convex ends form a cylinder with an inner hole, and the inner hole is assembled with the roller bearing and sleeved on the roller bearing; the flat plate end of the plate-shaped clamping plate is provided with a bolt hole, and the fixing clamping plate is fixedly arranged on the mounting seat through a bolt penetrating through the bolt hole.
The material of the upper and lower cylinders of the rotating drum is stainless steel.
The three groups of mounting seats can be arranged on the right side, the middle and the left side of the three cross sections respectively, the blades of the rotating drum with the first cross section are arranged in a direction deviating from the counterclockwise direction, and the blades of the rotating drum with the third cross section are arranged in a direction deviating from the clockwise direction.
The blade is made of high-strength alloy steel.
The utility model discloses a rotary drum among the wind-tunnel buffer stop can revolute the rotation of axes under the effect of experimental air current, has reduced the impact to wind-tunnel buffer stop such as diaphragm disintegrating slag or lamella.
The utility model discloses a wind-tunnel buffer stop can stop diaphragm disintegrating slag or broken pieces etc. in wind-tunnel vacuum pipe section, has avoided diaphragm disintegrating slag or broken pieces etc. to the terminal destruction of vacuum pipe section.
Drawings
FIG. 1 is a schematic perspective view of the installation of the wind tunnel collision avoidance apparatus in a vacuum pipe section according to the present invention;
FIG. 2 is a front view of the wind tunnel anti-collision device of the present invention, cut along a vertical center plane of symmetry;
FIG. 3 is a front view of the wind tunnel collision avoidance device of the present invention along the direction of the test airflow;
FIG. 4 is a perspective view of a rotary drum in the wind tunnel collision avoidance apparatus of the present invention;
FIG. 5 is a front view of the wind tunnel collision avoidance apparatus of the present invention, taken along a vertical center plane of symmetry;
fig. 6 is a front view of the drum of the wind tunnel collision avoidance apparatus of the present invention, cut along a horizontal center plane;
FIG. 7 is an enlarged view of a portion A of FIG. 2;
FIG. 8 is an enlarged view of a portion B of FIG. 2;
fig. 9 is a perspective view of a fixing clip board in the wind tunnel collision avoidance device of the present invention.
In the figure, 1, a rotating drum 2, a fixed clamping plate 3, a vacuum pipe section 4, a base 5, a mounting seat 6, a roller bearing 7, a tapered roller thrust bearing 8, a rotating shaft 9 and blades are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 3, the wind tunnel collision avoidance device of the present invention comprises a rotating cylinder 1, a fixed clamping plate 2, a mounting base 5, a roller bearing 6, a tapered roller thrust bearing 7, a rotating shaft 8 and blades 9;
the vacuum pipe section 3 is a circular pipe with one end connected with the outlet of the test section and the other end sealed; the vacuum pipe section 3 is fixedly arranged on the ground through a base 4; three cross sections are arranged in a cavity of the vacuum pipe section 3 from front to back, each cross section is provided with a group of mounting seats 5 which are symmetrically arranged up and down, and the three groups of mounting seats 5 are respectively arranged on the left side, the middle and the right side of the three cross sections; each group of mounting seats 5 is provided with a rotary drum 1, when the rotary drums 1 are seen from front to back along the airflow direction, the projections of the three rotary drums 1 are positioned on the cross section of the flow field uniform area of the vacuum pipe section 3, the heights of the rotary drums 1 with the first cross section and the rotary drums 1 with the third cross section are equal, and are both smaller than the height of the rotary drum 1 with the second cross section;
as shown in fig. 4 and 5, the main body of the rotating drum 1 is a cylinder, a rotating shaft 8 is arranged on the vertical central axis of the rotating drum 1, the middle part of the rotating drum 1 is provided with blades 9 as shown in fig. 6, the blades 9 of the rotating drum 1 with the first cross section are arranged in a way of deviating clockwise, and the blades 9 of the rotating drum 1 with the third cross section are arranged in a way of deviating counterclockwise; the upper part and the lower part of the rotary drum 1 are provided with symmetrical cylinders, and vertical through grooves which are uniformly distributed are formed along the circumferential direction of the cylinders;
as shown in fig. 7 and 8, the upper end and the lower end of the rotating shaft 8 are sleeved with roller bearings 6 and are arranged on the upper and lower mounting seats 5 through the fixed clamping plate 2; a tapered roller thrust bearing 7 is sleeved at the lower end of the rotating shaft 8;
as shown in fig. 9, the fixed clamping plate 2 is a group of 2 symmetrically installed plate-shaped clamping plates, one end of each plate-shaped clamping plate is a protruding end, and the other end of each plate-shaped clamping plate is a flat end; after the convex ends of the 2 plate-shaped clamping plates are butted, the convex ends form a cylinder with an inner hole, and the inner hole is assembled with the roller bearing 6 and sleeved on the roller bearing 6; the flat plate end of the plate-shaped clamping plate is provided with a bolt hole, and the fixing clamping plate 2 is fixedly arranged on the mounting seat 5 through a bolt penetrating through the bolt hole.
The material of the upper and lower cylinders of the rotating drum 1 is stainless steel.
The three groups of mounting seats 5 can also be respectively arranged at the right side, the middle and the left side of the three cross sections, the blades 9 of the rotating drum 1 with the first cross section are arranged in a direction deviating from the counterclockwise direction, and the blades 9 of the rotating drum 1 with the third cross section are arranged in a direction deviating from the clockwise direction.
The blades 9 are made of high-strength alloy steel.
Example 1
The specific working process of the wind tunnel anti-collision device of the embodiment is as follows:
when the test airflow containing the membrane fragments or fragments and the like flows to the vacuum pipe section 3, the rotary drum 1 rotates under the action of the test airflow, the kinetic energy of the membrane fragments or fragments and the like is reduced and the flight direction is changed after the membrane fragments or fragments and the like impact the rotary drum 1, and the direct impact damage to the tail end of the vacuum pipe section 3 is avoided.
Claims (4)
1. A wind tunnel anti-collision device is characterized by comprising a rotary drum (1), a fixed clamping plate (2), a mounting seat (5), a roller bearing (6), a tapered roller thrust bearing (7), a rotating shaft (8) and blades (9);
the vacuum pipe section (3) is a round pipe with one end connected with the outlet of the test section and the other end sealed; the vacuum pipe section (3) is fixedly arranged on the ground through a base (4); three cross sections are arranged in a cavity of the vacuum pipe section (3) from front to back, each cross section is provided with a group of mounting seats (5) which are symmetrically arranged up and down, and the three groups of mounting seats (5) are respectively arranged on the left side, the middle and the right side of the three cross sections; each group of mounting seats (5) is provided with a rotary drum (1), when the rotary drums are seen from front to back along the airflow direction, the projections of the three rotary drums (1) are positioned on the cross section of the flow field uniform area of the vacuum pipe section (3), the heights of the rotary drums (1) with the first cross section and the rotary drums (1) with the third cross section are equal, and the heights of the rotary drums (1) with the first cross section and the rotary drums with the third cross section are smaller than the height of the rotary drum (1);
the main body of the rotating drum (1) is a cylinder, a rotating shaft (8) is arranged on the vertical central axis of the rotating drum (1), blades (9) are arranged in the middle of the rotating drum (1), the blades (9) of the rotating drum (1) with a first cross section are arranged in a clockwise direction, and the blades (9) of the rotating drum (1) with a third cross section are arranged in a counterclockwise direction; the upper part and the lower part of the rotating drum (1) are provided with symmetrical cylinders, and vertical through grooves which are uniformly distributed are formed along the circumferential direction of the cylinders;
the upper end and the lower end of the rotating shaft (8) are sleeved with roller bearings (6) which are arranged on the upper and lower mounting seats (5) through the fixed clamping plate (2); a tapered roller thrust bearing (7) is sleeved at the lower end of the rotating shaft (8);
the fixed clamping plates (2) are a group of 2 symmetrically-arranged plate-shaped clamping plates, one end of each plate-shaped clamping plate is a protruding end, and the other end of each plate-shaped clamping plate is a flat plate end; after the protruding ends of the 2 plate-shaped clamping plates are in butt joint, the protruding ends form a cylinder with an inner hole, and the inner hole is assembled with the roller bearing (6) and sleeved on the roller bearing (6); the flat plate end of the plate-shaped clamping plate is provided with a bolt hole, and the fixing clamping plate (2) is fixedly arranged on the mounting seat (5) through a bolt penetrating through the bolt hole.
2. The wind tunnel collision avoidance device according to claim 1, wherein the upper and lower cylinders of the rotating tube (1) are made of stainless steel.
3. The wind tunnel collision avoidance device according to claim 1, wherein the three sets of mounting seats (5) are respectively arranged on the right side, the middle side and the left side of the three cross sections, the blades (9) of the rotor (1) of the first cross section are arranged with a deviation in the counterclockwise direction, and the blades (9) of the rotor (1) of the third cross section are arranged with a deviation in the clockwise direction.
4. The wind tunnel collision avoidance device of claim 1, wherein the blades (9) are made of high strength alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021075349.9U CN211954609U (en) | 2020-06-12 | 2020-06-12 | Wind tunnel anti-collision device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021075349.9U CN211954609U (en) | 2020-06-12 | 2020-06-12 | Wind tunnel anti-collision device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211954609U true CN211954609U (en) | 2020-11-17 |
Family
ID=73158986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021075349.9U Withdrawn - After Issue CN211954609U (en) | 2020-06-12 | 2020-06-12 | Wind tunnel anti-collision device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211954609U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521367A (en) * | 2020-06-12 | 2020-08-11 | 中国空气动力研究与发展中心超高速空气动力研究所 | Wind tunnel anti-collision device |
-
2020
- 2020-06-12 CN CN202021075349.9U patent/CN211954609U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521367A (en) * | 2020-06-12 | 2020-08-11 | 中国空气动力研究与发展中心超高速空气动力研究所 | Wind tunnel anti-collision device |
| CN111521367B (en) * | 2020-06-12 | 2024-04-12 | 中国空气动力研究与发展中心超高速空气动力研究所 | Wind tunnel anticollision device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20201117 Effective date of abandoning: 20240412 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20201117 Effective date of abandoning: 20240412 |