CN113109018A - Model replacement method suitable for small continuous type cross supersonic wind tunnel - Google Patents
Model replacement method suitable for small continuous type cross supersonic wind tunnel Download PDFInfo
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- CN113109018A CN113109018A CN202110457142.0A CN202110457142A CN113109018A CN 113109018 A CN113109018 A CN 113109018A CN 202110457142 A CN202110457142 A CN 202110457142A CN 113109018 A CN113109018 A CN 113109018A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 239000007921 spray Substances 0.000 claims abstract description 20
- 230000007704 transition Effects 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 18
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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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
- G01M9/08—Aerodynamic models
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Abstract
The invention discloses a model replacing method suitable for a small continuous type cross supersonic wind tunnel, which realizes the quick connection or disconnection of a spray pipe section and a model support section by a quick locking mechanism, drags the model support section, a super-expanding section and a transition section to integrally move a proper distance to the downstream of an air flow by a driving mechanism, and realizes the purpose of model replacement by utilizing the distance between the model support section and the spray pipe section; the method overcomes the defects of narrow operation space, long replacement time and low use efficiency of the replacement of the small continuous wind tunnel model; meanwhile, the device has the characteristics of accurate butt joint, quick connection and convenience in use, meets the requirement of replacing a small continuous type super-crossing wind tunnel model, improves the use efficiency of the wind tunnel and reduces the labor intensity of workers.
Description
Technical Field
The invention relates to the field of wind tunnel structures, in particular to a model replacement method suitable for a small continuous type cross supersonic speed wind tunnel.
Background
The small continuous cross-supersonic wind tunnel has low use cost and higher use frequency of research tests of the wind tunnel, so that the high efficiency of model replacement and the convenience of use of the wind tunnel of the scale are very important. The difficulty in replacing the small continuous type transwind tunnel model is that the operation space is narrow, and the model can be replaced only by removing related equipment. At present, the method is applied to replacing small continuous type cross supersonic speed wind tunnel models in many ways, but the method is not favorable for the requirement of efficient use of the wind tunnel due to the characteristics of long time, low efficiency, high labor intensity of workers and the like of common model replacement.
Therefore, a model replacing method suitable for a small continuous type cross supersonic wind tunnel is provided.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a model replacing method suitable for a small continuous type cross-supersonic wind tunnel, so as to overcome the technical problems in the prior related art.
The technical scheme of the invention is realized as follows:
a model replacing method suitable for a small continuous type cross supersonic wind tunnel comprises the following steps:
s1, fixedly installing the spray pipe section and the sleeve section on a ground foundation, installing a ground track aligned with one end of the spray pipe section on the ground foundation, and connecting the model support section, the super-expansion section and the transition section together to form a whole and slidably installing the model support section, the super-expansion section and the transition section on the ground track;
s2, mounting a driving mechanism for driving the super-expanding section to move on the ground track at the lower part of the super-expanding section;
s3, connecting the spray pipe section with the model support section through a quick locking mechanism;
s4, one end of the transition section is inserted into the sleeve section in a sliding mode, and the inflatable sealing structure in the sleeve section is inflated and sealed, so that a wind tunnel test can be conducted;
s5, after the work of S1-S4 is finished, the inflatable sealing structure is deflated and decompressed, then the quick locking mechanism is opened, the driving mechanism is started to enable the model support section to move on the ground track along the airflow direction, and the model support section is separated from the spray pipe section and is far away from the spray pipe section for a distance for replacing a test model;
s6, detaching the test model on the model bracket section and replacing the test model with a new one;
and S7, starting the driving mechanism to enable the super-expanding section to move reversely along the airflow direction and reset, locking the super-expanding section through the quick locking mechanism, and inflating and sealing the inflatable sealing structure to finish the replacement of the test model.
Furthermore, the ground track is provided with parallel double tracks, a rack parallel to the ground track is arranged between the double tracks of the ground track, the driving mechanism comprises a forward and reverse rotation speed reducing motor arranged at the lower part of the super-expanding section, one end of an output shaft of the forward and reverse rotation speed reducing motor is provided with a gear, and the gear is meshed with the rack.
Furthermore, in order to ensure the stability of the wind tunnel during operation, a shockproof guide mechanism is further installed on the ground base, the shockproof guide mechanism comprises a guide sleeve and a guide post installed on the super-expanding section, and the guide post is in sliding insertion connection with the guide sleeve.
Furthermore, one side of the shockproof guide mechanism is also provided with a limit switch for limiting the moving position of the over-expanding section, and the limit switch is connected with the controller of the driving mechanism.
Furthermore, quick locking mechanism includes the toper clamp pin of fixed mounting on model support section one end flange and installs the supporting pneumatic taper pin that uses of spout section one end and toper clamp pin and grasp the type locker, and pneumatic taper pin grasps the type locker and the toper clamp pin and aligns respectively and is provided with four groups, spout the flange surface mounting of section one end and have rubber seal.
Further, a sliding belt is installed in the sleeve section.
The invention has the beneficial effects that:
1. the model replacing method suitable for the small continuous type cross-supersonic wind tunnel provided by the invention overcomes the defects of small operation space, long replacing time and low use efficiency of the small continuous type wind tunnel model replacing, has the characteristics of accurate butt joint, quick connection and convenient use, and realizes the requirement of replacing the model in the small continuous type cross-supersonic wind tunnel.
2. The invention provides a model replacing method suitable for a small continuous type cross supersonic wind tunnel, which finally realizes the purpose of replacing a model outside a flow channel by dragging equipment to move axially through a driving mechanism, and in the whole model replacing process, except for the replacement of the model, manual operation is needed, and all the rest is controlled by an automatic program; the wind tunnel using efficiency is improved, and the labor intensity of workers is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic external structural view of a small continuous cross supersonic wind tunnel according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a nozzle segment according to an embodiment of the present invention, after being disengaged from a mold carrier segment;
FIG. 3 is a schematic view of a quick lock mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a shock guiding mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic view of a pneumatic sealing structure and a sliding belt according to an embodiment of the invention.
In the figure:
1. a spray pipe section; 2. a model support segment; 3. a super-expanding section; 4. a transition section; 5. a sleeve segment; 6. a drive mechanism; 7. a test model; 8. a quick locking mechanism; 9. a shockproof guide mechanism; 10. an inflatable sealing structure; 11. a sliding belt; 12. a ground foundation; 13. a ground track; 14. a rack; 15. a positive and negative rotation speed reducing motor; 16. a guide sleeve; 17. a guide post; 18. a rail wheel; 19. a pneumatic taper pin grasping type locker; 20. a tapered clamping pin.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
The first embodiment is as follows:
in accordance with an embodiment of the present invention,
referring to fig. 1-5, a method for model replacement for a small continuous cross-supersonic wind tunnel includes the following steps:
s1, fixedly mounting the spray pipe section 1 and the sleeve section 5 on a ground foundation 12, mounting a ground track 13 aligned with one end of the spray pipe section 1 on the ground foundation 12, and connecting the model support section 2, the super-expansion section 3 and the transition section 4 together to form a whole body and slidably mounting the whole body on the ground track 13, wherein the model support section 2, the super-expansion section 3 and the transition section 4 are connected by bolts;
s2, installing a driving mechanism 6 for driving the super-expanding section 3 to move on the ground track 13 at the lower part of the super-expanding section 3;
s3, connecting the spray pipe section 1 with the model bracket section 2 through a quick locking mechanism 8;
s4, one end of the transition section 4 is inserted into the sleeve section 5 in a sliding mode, and the inflatable sealing structure 10 in the sleeve section 5 is inflated and sealed, so that a wind tunnel test can be conducted;
s5, after the work of S1-S4 is finished, the inflatable sealing structure 10 is deflated and decompressed, then the quick locking mechanism 8 is opened, the driving mechanism 6 is started to enable the model support section 2 to move on the ground track 13 along the air flow direction, and the model support section 2 is separated from the spray pipe section 1 and is far away from the spray pipe section 1 for replacing the test model 7;
s6, removing the test model 7 on the model bracket section 2, and replacing the new test model 7;
and S7, starting the driving mechanism 6 to enable the super-expanding section 3 to move reversely along the airflow direction and reset, then locking through the quick locking mechanism 8, and then carrying out air-inflation sealing on the air-inflation sealing structure 10, thus finishing the replacement of the test model.
In implementation, because the wind tunnel has pressure during operation, the reliability and rapidity of sealing need to be ensured, wherein the inflatable sealing structure 10 is designed to maintain the sealing state of the wind tunnel model replacement and the wind tunnel operation state.
Specifically, the ground rails 13 are arranged into parallel double rails, a rack 14 parallel to the ground rails 13 is installed between the double rails of the ground rails 13, the driving mechanism 6 comprises a forward and reverse rotation speed reducing motor 15 installed at the lower part of the super-expanding section 3, one end of an output shaft of the forward and reverse rotation speed reducing motor 15 is provided with a gear, and the gear is meshed with the rack 14. The movement of the super-expanding section 3 is controlled by operating the positive and negative rotation of the positive and negative rotation speed reducing motor 15, and a rail wheel 18 matched with the ground rail 13 is installed at the supporting bottom of the super-expanding section 3.
As shown in fig. 2, in order to ensure the stability of the equipment during the operation of the wind tunnel, a shockproof guide mechanism 9 is further installed on the ground foundation 12, the shockproof guide mechanism 9 comprises a guide sleeve 16 and a guide post 17 installed on the super-expanding section 3, and the guide post 17 is in sliding insertion connection with the guide sleeve 16; the shockproof guide mechanism 9 has the functions of accurately guiding and preventing the wind tunnel from shaking in the direction vertical to the ground in the operation process when the driving force system integrally drags the relevant sections.
Specifically, a limit switch for limiting the moving position of the over-expanding section 3 is further installed on one side of the shockproof guide mechanism 9, and the limit switch is connected with the controller of the driving mechanism 6.
In implementation, the quick locking mechanism 8 comprises a conical clamping pin 20 fixedly installed on a flange at one end of the model support section 2 and a pneumatic conical pin grasping type locker 19 installed at one end of the spray pipe section 1 and used with the conical clamping pin 20, the pneumatic conical pin grasping type locker 19 and the conical clamping pin 20 are respectively provided in four groups in an aligning manner, and a rubber sealing ring is installed on the surface of the flange at one end of the spray pipe section 1.
As shown in fig. 5, a slide belt 11 is also mounted in the sleeve segment 5. Wherein, there is the clearance in the radial direction in the transition section 4 in the cover barrel section 5 slip in-process, and the slip area 11 plays the effect of facilitating the slip, plays the effect that has the direction simultaneously and lubricates the glide plane.
In summary, with the above technical solution of the present invention,
the model replacing method suitable for the small continuous type cross-supersonic wind tunnel provided by the invention overcomes the defects of small operation space, long replacing time and low use efficiency of the small continuous type wind tunnel model replacing, has the characteristics of accurate butt joint, quick connection and convenient use, and realizes the requirement of replacing the model in the small continuous type cross-supersonic wind tunnel.
The invention provides a model replacing method suitable for a small continuous type cross supersonic speed wind tunnel, which finally realizes the aim of replacing a test model 7 outside a flow channel by dragging equipment to move axially through a driving mechanism 6, and in the whole replacing process of the test model 7, except for the replacement of the test model 7, manual operation is needed, and all the rest can be controlled by an automatic program; the wind tunnel using efficiency is improved, and the labor intensity of workers is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A model replacing method suitable for a small continuous type cross supersonic wind tunnel is characterized by comprising the following steps: the method comprises the following steps:
s1, fixedly installing the spray pipe section (1) and the sleeve section (5) on a ground foundation (12), installing a ground track (13) aligned with one end of the spray pipe section (1) on the ground foundation (12), and connecting the model support section (2), the over-expansion section (3) and the transition section (4) together to form a whole and slidably installing the whole on the ground track (13);
s2, mounting a driving mechanism (6) for driving the super-expanding section (3) to move on the ground track (13) at the lower part of the super-expanding section (3);
s3, connecting the spray pipe section (1) with the model bracket section (2) through a quick locking mechanism (8);
s4, one end of the transition section (4) is inserted into the sleeve section (5) in a sliding mode, and the inflatable sealing structure (10) in the sleeve section (5) is inflated and sealed, so that a wind tunnel test can be conducted;
s5, after the work of S1-S4 is finished, the inflatable sealing structure (10) is deflated and decompressed, then the quick locking mechanism (8) is opened, the driving mechanism (6) is started to enable the model support section (2) to move on the ground track (13) along the air flow direction, and the model support section (2) is separated from the spray pipe section (1) and is far away from the spray pipe section for a distance for replacing the test model (7);
s6, removing the test model (7) on the model bracket section (2) and replacing the new test model (7);
s7, the super-expanding section (3) moves reversely along the airflow direction and resets by starting the driving mechanism (6), then the super-expanding section is locked by the quick locking mechanism (8), and the inflatable sealing structure (10) is inflated and sealed, so that the test model is replaced.
2. The model replacing method suitable for the small continuous type transonic wind tunnel according to claim 1, wherein the ground rails (13) are arranged into parallel double rails, a rack (14) parallel to the ground rails (13) is installed between the double rails of the ground rails (13), the driving mechanism (6) comprises a forward and reverse rotation speed reducing motor (15) installed at the lower part of the super-expanding section (3), one end of an output shaft of the forward and reverse rotation speed reducing motor (15) is provided with a gear, and the gear is meshed with the rack (14).
3. The model changing method suitable for the small continuous supersonic-speed-crossing wind tunnel according to claim 1, wherein in order to ensure the stability of the wind tunnel in operation, a shockproof guide mechanism (9) is further installed on the ground foundation (12), the shockproof guide mechanism (9) comprises a guide sleeve (16) and a guide post (17) installed on the super-expanding section (3), and the guide post (17) is in sliding insertion connection with the guide sleeve (16).
4. The method for model replacement of a small continuous supersonic wind tunnel according to claim 3, wherein a limit switch for limiting the moving position of the over-extension section (3) is further installed at one side of the shockproof guide mechanism (9), and the limit switch is connected with the controller of the driving mechanism (6).
5. The model replacing method suitable for the small continuous type supersonic wind tunnel, according to claim 1, wherein the quick locking mechanism (8) comprises a conical clamping pin (20) fixedly installed on a flange at one end of the model support section (2) and a pneumatic conical pin grasping type locker (19) installed at one end of the jet pipe section (1) and used with the conical clamping pin (20), the pneumatic conical pin grasping type locker (19) and the conical clamping pin (20) are respectively provided in four groups in an aligning manner, and a rubber sealing ring is installed on the surface of the flange at one end of the jet pipe section (1).
6. The method for model exchange in a small continuous transonic wind tunnel according to claim 1, characterized in that a sliding belt (11) is further installed in said sleeve section (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110457142.0A CN113109018A (en) | 2021-04-27 | 2021-04-27 | Model replacement method suitable for small continuous type cross supersonic wind tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110457142.0A CN113109018A (en) | 2021-04-27 | 2021-04-27 | Model replacement method suitable for small continuous type cross supersonic wind tunnel |
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| CN113109018A true CN113109018A (en) | 2021-07-13 |
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| CN202110457142.0A Pending CN113109018A (en) | 2021-04-27 | 2021-04-27 | Model replacement method suitable for small continuous type cross supersonic wind tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838904A (en) * | 2022-07-04 | 2022-08-02 | 中国航空工业集团公司沈阳空气动力研究所 | Flexible sealing automatic locking mechanism for high-temperature wind tunnel spray pipe |
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| CN111442900A (en) * | 2020-05-11 | 2020-07-24 | 中国空气动力研究与发展中心超高速空气动力研究所 | Distance adjusting device for diffuser and spray pipe with double-cone structure in hypersonic wind tunnel |
| CN112665815A (en) * | 2020-12-28 | 2021-04-16 | 中国航天空气动力技术研究院 | Low-noise flow field debugging platform |
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2021
- 2021-04-27 CN CN202110457142.0A patent/CN113109018A/en active Pending
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| CN101858480A (en) * | 2010-03-31 | 2010-10-13 | 北京市三一重机有限公司 | Supporting mechanism |
| KR101671011B1 (en) * | 2016-08-25 | 2016-11-01 | 주식회사 에이알티플러스 | Wind tunnel for testing filter with impacter change module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114838904A (en) * | 2022-07-04 | 2022-08-02 | 中国航空工业集团公司沈阳空气动力研究所 | Flexible sealing automatic locking mechanism for high-temperature wind tunnel spray pipe |
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Application publication date: 20210713 |
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