CN112729750B - Three-branch series hypersonic wind tunnel overall structure - Google Patents
Three-branch series hypersonic wind tunnel overall structure Download PDFInfo
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- CN112729750B CN112729750B CN202011524555.8A CN202011524555A CN112729750B CN 112729750 B CN112729750 B CN 112729750B CN 202011524555 A CN202011524555 A CN 202011524555A CN 112729750 B CN112729750 B CN 112729750B
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- G—PHYSICS
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- 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
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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
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Abstract
The invention discloses a three-branch series type hypersonic wind tunnel overall structure, which comprises three branches, wherein the Mach number simulation range of a hypersonic wind tunnel is divided into 3-10 intervals, the three branches are respectively a high-flow low-pressure air cooling branch, a high-flow medium-temperature medium-pressure branch and a medium-small-flow high-temperature high-pressure branch, the Mach number operation range of the high-flow low-pressure air cooling branch is less than or equal to Mach number 4, the Mach number operation range of the high-flow medium-temperature medium-pressure branch is greater than 4 and less than or equal to 7, and the Mach number operation range of the medium-small-flow high-temperature high-pressure branch is greater than 7 and less than or equal to 10; the three-branch series type hypersonic wind tunnel overall structure provided by the invention can realize the requirement of an advanced hypersonic wind tunnel on wide parameter simulation in a step-by-step implementation mode; the wind tunnel operation state is convenient to switch, the wind tunnel layout is simple, and the wind tunnel safe operation and standardized management are facilitated.
Description
Technical Field
The invention relates to the field of hypersonic wind tunnel test equipment, in particular to a three-branch series hypersonic wind tunnel overall structure.
Background
The hypersonic wind tunnel is basic equipment for development and aerodynamic research of a hypersonic aircraft, is an important ground facility platform meeting the requirements of long-term development strategy of national defense and aerospace industry, and provides support for pneumatic design optimization, verification and examination of national major models. The hypersonic wind tunnel with advanced performance has the advantages of wide simulation range, good flow field quality, high operation efficiency and the like.
The hypersonic wind tunnel has the advantages of high construction difficulty, long construction period and large investment, and when the establishment of a hypersonic wind tunnel project is declared, the simulation range of the wind tunnel is possibly limited within a certain parameter range because the hypersonic wind tunnel project is limited by a payment tray, or the hypersonic wind tunnel project meets the development requirement of the current model, or meets the urgent requirement of a certain model test task. Along with the change of the international situation environment or along with the improvement of the development capability of aircrafts in China, the built hypersonic wind tunnel simulation capability is insufficient, and the test capability of other parameter ranges of the hypersonic wind tunnel needs to be further expanded or another hypersonic wind tunnel in other parameter ranges needs to be newly built. If a new construction or performance expansion is carried out in the overall structural layout scheme of the initial hypersonic wind tunnel construction, if a development space is not planned or reserved, infrastructure which can be shared by an equipment factory building, a wind tunnel-matched power supply and distribution system, a cooling water supply system, a high-pressure air supply system, a wind tunnel operation and control system, a data acquisition and processing system, a schlieren system and the like, and equipment sections which can be shared by a test section, a model mechanism and a hypersonic wind tunnel can be repeatedly invested and constructed, so that the new construction or the expanded hypersonic wind tunnel construction cannot form the test capability as soon as possible, part of the equipment sections have the problem of repeated investment, and the period of forming the test capability is prolonged.
In a hypersonic wind tunnel using air as a test medium, under a high Mach number state (M is more than 4), airflow is violently expanded through a spray pipe, so that the static temperature of the airflow at a test section is very low, not only water vapor and carbon dioxide can be condensed, but also air components can be condensed under a general stagnation condition.
The Mach number analog range of the hypersonic wind tunnel is generally 3-10, and when the Mach number analog parameter is less than or equal to 4, air does not need to be heated. When the mach number is greater than 4, the air must be heated to operate the wind tunnel in a condensation-free condition in order to prevent condensation of the air components themselves. However, when the Mach number is larger than 4 and smaller than or equal to 7, the air flow of the wind tunnel operation is large, the pressure grade is medium, the heating temperature is low, the electric heating element and the heat storage material of the heat storage type heater for heating are easy to solve, and the problem is not easy to occur in the using process. When the Mach number is larger than 7 and smaller than or equal to 10, the air flow of the wind tunnel operation is relatively small, the pressure level is high, the heating temperature is high, and the wind tunnel is easy to break down due to the influence of high temperature and high pressure in the using process. If one heater is adopted to meet the requirements of large flow and high temperature and high pressure to realize the operation range of Mach number more than 4 and less than or equal to 10, the design difficulty of the heater is high, the cost is high, the heating time is greatly prolonged during high Mach number test, the difficulty of easy fault maintenance is high, and the test state switching is not easy to realize.
In order to finally build a hypersonic wind tunnel with advanced performance, avoid repeated investment of a supporting guarantee system, an equipment factory building, a sharable wind tunnel section and the like when the performance of the hypersonic wind tunnel expands a branch and enable a later performance expanding branch to have test capability more quickly, the invention provides a three-branch series hypersonic wind tunnel overall structure.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a three-branch series hypersonic wind tunnel overall structure to overcome the technical problems in the prior related art.
The technical scheme of the invention is realized as follows:
a three-branch series type hypersonic wind tunnel overall structure comprises three branches dividing a hypersonic wind tunnel Mach number simulation range from 3 to 10 into three intervals, wherein the three branches are respectively a high-flow low-pressure air cooling branch, a high-flow medium-temperature medium-pressure branch and a medium-and-small-flow high-temperature high-pressure branch, the Mach number operation range of the high-flow low-pressure air cooling branch is less than or equal to Mach number 4, the Mach number operation range of the high-flow medium-temperature medium-pressure branch is greater than 4 and less than or equal to 7, the Mach number operation range of the medium-and-small-flow high-temperature high-pressure branch is greater than 7 and less than or equal to 10, the high-flow low-pressure air cooling branch, the high-flow medium-temperature medium-pressure branch and the medium-and small-flow high-temperature high-pressure branch share a main body equipment factory building and a scientific research auxiliary building, the high-flow low-pressure air cooling branch, the high-flow medium-temperature medium-pressure branch and the medium-and small-flow high-temperature high-pressure branch share a set of high-pressure gas supply pipeline and a valve system, Supply distribution system, cooling water system and vacuum system, one set of wind-tunnel control and monitored control system, data acquisition system and schlieren display system are shared to large-traffic low pressure air conditioning branch road, large-traffic medium temperature middling pressure branch road and medium and small flow high temperature high pressure branch road, one set of changeover portion joint support basis, stable section support and spray tube support, test section, diffuser, model mechanism and cooler are shared to large-traffic low pressure air conditioning branch road, large-traffic medium temperature middling pressure branch road and medium and small flow high temperature high pressure branch road, the changeover portion joint support basis includes supporting seat I, supporting seat II and supporting seat III.
Further, the heaters of the large-flow medium-temperature and medium-pressure branch and the medium-small-flow high-temperature and high-pressure branch are vertically installed in a suspension mode.
Furthermore, the high-flow low-pressure cold air branch is provided with a stabilizing section and a transition section I and a set of spray pipes I with different Mach numbers, and the supporting of the stabilizing section and the transition section I is a supporting seat I, a supporting seat II and a supporting seat III.
Furthermore, the large-flow medium-temperature medium-pressure branch is provided with a stabilizing section and a transition section II, a hot valve I and a set of spray pipes II with different Mach numbers, and the supporting of the stabilizing section and the transition section II is a supporting seat II and a supporting seat III.
Furthermore, the medium-small flow high-temperature high-pressure branch is provided with a stabilizing section and a transition section III, a set of spray pipes III with different Mach numbers and a thermal valve II, and the supporting seat III is used for supporting the stabilizing section and the transition section III.
Further, the large-flow low-pressure cold air branch, the large-flow medium-temperature medium-pressure branch and the medium-and-small-flow high-temperature high-pressure branch of the hypersonic wind tunnel share the same central axis of the wind tunnel, and the same central elevation of the wind tunnel is that the large-flow low-pressure cold air branch is in the front, the middle is the large-flow medium-temperature medium-pressure branch, and the rear is the medium-and-small-flow high-temperature high-pressure branch, and the large-flow low-pressure cold air branch, the large-flow medium-temperature medium-pressure branch and the medium-and-small-flow high-temperature high-pressure branch adopt a serial layout.
Further, the hypersonic wind tunnel adopts a two-layer or local two-layer layout mode, wherein the first layer is used for laying out a high-pressure pipeline and a storage and stream logistics channel of a valve wind tunnel air supply system, a power supply and distribution system, a cooling water system, a large-scale equipment foundation, spare parts and replacement parts, and the second layer is used for laying out main equipment of the hypersonic wind tunnel and providing a space and a stream logistics channel required by equipment operation, maintenance and operation.
Further, the supporting seat I, the supporting seat II, the supporting seat III, the stabilizing section support and the spray pipe support are all fixed at the top of the transition section combined support foundation.
The invention has the beneficial effects that:
1. the three-branch tandem type hypersonic wind tunnel overall structure provided by the invention realizes the requirement of wide parameter operation simulation range required by advanced hypersonic speed by the overall structure layout mode of the three-branch tandem type hypersonic wind tunnel.
2. According to the three-branch tandem type hypersonic wind tunnel overall structure provided by the invention, the overall structure layout mode of the three-branch tandem type hypersonic wind tunnel can be implemented step by step according to the investment budget condition in the project construction stage and the task requirement conditions in different periods, so that the investment cost of later-stage newly-added branch construction is effectively reduced, and the branch with later-stage performance expansion can rapidly have the test capability.
3. According to the three-branch tandem type hypersonic wind tunnel overall structure provided by the invention, the overall structure layout mode of the three-branch tandem type hypersonic wind tunnel is adopted, different test states can be quickly switched, only the stable section, the transition section, the spray pipe and the thermal valve on the heater need to be replaced when the state is changed, the equipment replacement workload is small, and the period is short.
4. According to the three-branch tandem type hypersonic wind tunnel overall structure provided by the invention, the main structural layout adopts a two-layer or local two-layer layout mode, and the function partition is reasonably carried out according to different functions of each system of wind tunnel equipment, so that the influence of electromagnetic radiation and noise interference on test equipment and personnel in the wind tunnel operation process is effectively avoided, and the damage of high-pressure leakage to personnel is reduced.
5. According to the three-branch tandem type hypersonic wind tunnel overall structure provided by the invention, the main body equipment adopts a two-layer or local two-layer layout mode, so that the construction difficulty of installing a foundation deep foundation pit for large-scale equipment such as a heater, a test section and a model is reduced.
6. The three-branch series type hypersonic wind tunnel overall structure provided by the invention can realize the requirement of an advanced hypersonic wind tunnel on wide parameter simulation in a step-by-step implementation mode; the wind tunnel operation state is convenient to switch, the wind tunnel layout is simple, and the wind tunnel safe operation and standardized management are facilitated. The three-branch series type hypersonic wind tunnel overall structure can be popularized and applied to hypersonic wind tunnel construction layouts with different calibers.
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 general block diagram according to an embodiment of the invention;
FIG. 2 is a diagram of a main body apparatus of a high flow rate low pressure cold air branch according to an embodiment of the present invention;
FIG. 3 is a structural layout diagram of a main body device of a large-flow medium-temperature and medium-pressure branch according to an embodiment of the invention;
FIG. 4 is a structural layout diagram of a high-temperature high-pressure branch main body device with a medium and small flow rate according to an embodiment of the invention;
fig. 5 is a cross-sectional view of a three-leg transition piece support joint support infrastructure, in accordance with an embodiment of the present invention.
In the figure:
1. a high-flow low-pressure cold air branch; 2. a high-flow medium-temperature and medium-pressure branch; 3. a middle and small flow high-temperature high-pressure branch; 4. a combined supporting foundation; 5. a stable section is supported; 6. the spray pipe is supported; 7. a stable section and a transition section I; 8. a spray pipe I; 9. a support seat I; 10. a supporting seat II; 11. a supporting seat III; 12. a stable section and a transition section II; 13. a thermal valve I; 14. a spray pipe II; 15. a stabilization section and a transition section III; 16. a spray pipe III; 17. a thermal valve II; 18. the central axis of the wind tunnel.
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 three-branch serial hypersonic wind tunnel overall structure comprises three branches dividing a hypersonic wind tunnel mach number simulation range from 3 to 10 into three intervals, the three branches are respectively a high-flow low-pressure air cooling branch 1, a high-flow medium-temperature medium-pressure branch 2 and a medium-small-flow high-temperature high-pressure branch 3, the mach number operation range of the high-flow low-pressure air cooling branch 1 is less than or equal to mach number 4, the mach number operation range of the high-flow medium-temperature medium-pressure branch 2 is greater than 4 and less than or equal to 7, the mach number operation range of the medium-small-flow high-temperature high-pressure branch 3 is greater than 7 and less than or equal to 10, the high-flow low-pressure air cooling branch 1, the high-flow medium-temperature medium-pressure branch 2 and the medium-small-flow high-temperature high-pressure branch 3 share a main equipment plant and a scientific research building, and the high-flow low-pressure air cooling branch 1, the medium-flow medium-temperature medium-pressure branch 3 and the medium-flow high-temperature high-pressure branch 3 share one main equipment plant and a scientific research building, and the main equipment plant, The high-flow low-pressure air cooling branch 1, the high-flow medium-temperature medium-pressure branch 2 and the medium-low-flow high-temperature high-pressure branch 3 share a wind tunnel control and monitoring system, a data acquisition system and a schlieren display system, the high-flow low-pressure air cooling branch 1, the high-flow medium-temperature medium-pressure branch 2 and the medium-low-flow high-temperature high-pressure branch 3 share a combined supporting base 4, a stable section support 5, a spray pipe support 6, a test section, a diffuser, a model mechanism and a cooler, and the combined supporting base 4 comprises a supporting base I9, a supporting base II10 and a supporting base III 11.
In this embodiment, the heaters of the large-flow medium-temperature medium-pressure branch 2 and the medium-small-flow high-temperature high-pressure branch 3 are vertically installed in a suspended manner.
In this embodiment, the large-flow low-pressure cold air branch 1 is provided with a stabilizing section and a transition section I7 and a set of nozzles I8 with different mach numbers, and the supporting of the stabilizing section and the transition section I7 is a supporting seat I9, a supporting seat II10 and a supporting seat III 11; support seat I9, support seat II10 and support seat III11 are used for supporting the stable section and the transition section I7.
In this embodiment, the high-flow medium-temperature medium-pressure branch 2 is provided with a stabilizing section and a transition section II12, a thermal valve I13 and a set of spray pipes II14 with different mach numbers, and the supporting of the stabilizing section and the transition section II12 is a supporting seat II10 and a supporting seat III 11; support seat II10 and support seat III11 are used for supporting the stable section and the transition section II 12.
In this embodiment, the medium-small flow high-temperature and high-pressure branch 3 is provided with a stabilizing section and a transition section III15, a set of spray pipes III16 with different mach numbers and a thermal valve II17, and the supporting of the stabilizing section and the transition section III15 is a supporting seat III 11; supporting seat III11 is used for supporting the stable section and the transition section III 15.
In this embodiment, the large-flow low-pressure cold air branch 1, the large-flow medium-temperature medium-pressure branch 2, and the medium-and-small-flow high-temperature high-pressure branch 3 of the hypersonic wind tunnel share one wind tunnel central axis 18, and the same wind tunnel central elevation is defined as that the large-flow low-pressure cold air branch 1 is in the front, the large-flow medium-temperature medium-pressure branch 2 is in the middle, the medium-and-small-flow high-temperature high-pressure branch 3 is behind, and the large-flow low-pressure cold air branch 1, the large-flow medium-temperature medium-pressure branch 2, and the medium-and-small-flow high-temperature high-pressure branch 3 adopt a serial layout.
In this embodiment, the hypersonic wind tunnel adopts a two-layer or local two-layer layout mode, wherein the first layer is used for laying out a high-pressure pipeline and a storage and stream logistics channel of a valve wind tunnel air supply system, a power supply and distribution system, a cooling water system, a large-scale equipment foundation, spare parts and replacement parts, and the second layer is used for laying out main equipment of the hypersonic wind tunnel and providing a space and a stream logistics channel required for equipment operation, maintenance and operation.
In this embodiment, the supporting seat I9, the supporting seat II10, the supporting seat III11, the stabilizing section support 5, and the nozzle support 6 are all fixed on the top of the combined supporting base 4, and are used for laying out the supporting seat I9, the supporting seat II10, the supporting seat III11, the stabilizing section support 5, and the nozzle support 6.
By adopting a modularized section and support design method with the same mounting interface, the state switching among the three branches is realized only by replacing the stable section, the transition section and the spray pipes with different Mach numbers.
The working principle is as follows: according to the flow characteristics of the hypersonic wind tunnel under different Mach number operation parameters, a Mach number simulation range of 3-10 of a support seat I is divided into three branches, the Mach number operation range is less than or equal to Mach number 4, and the three branches are called as large-flow low-pressure cold air branches 1; the Mach number operation range is that more than 4 and less than or equal to 7 spray pipe supports, is called as a large-flow medium-temperature medium-pressure branch 2; the Mach number operation range is that the nozzle support is more than 7 and less than or equal to 10 supporting seats I, which is called as a medium-small flow high-temperature high-pressure branch 3. The three branches of the hypersonic wind tunnel share the same wind tunnel central axis 18 and the same wind tunnel central elevation. According to the method, a large-flow low-pressure cold air branch 1 is arranged in front, a large-flow medium-temperature medium-pressure branch 2 is arranged in the middle, and a medium-small-flow high-temperature high-pressure branch 3 is arranged behind, and a serial layout is adopted. The main structure layout of the hypersonic wind tunnel adopts a two-layer or local two-layer layout mode, and a high-pressure pipeline and valve wind tunnel air supply system, a power supply and distribution system, a cooling water system, a large-scale equipment foundation, storage of spare parts and parts to be replaced, a stream logistics channel and the like are arranged on one layer; the two-layer or two-layer platform is used for laying out main body equipment of the hypersonic wind tunnel and providing space and a people flow logistics channel required by equipment operation, maintenance and operation. The design method of the modularized section with the same mounting interface is adopted, and the state switching among the three branches is realized only by replacing the stable section, the transition section and the spray pipes with different Mach numbers. The three branches of the large-flow low-pressure cold air branch 1, the large-flow medium-temperature medium-pressure branch 2 and the medium-small-flow high-temperature high-pressure branch 3 share one main equipment factory building and a scientific research auxiliary building. The three branches of the high-flow low-pressure cold air branch 1, the high-flow medium-temperature medium-pressure branch 2 and the medium-low-flow high-temperature high-pressure branch 3 share a set of high-pressure air supply pipeline and operation guarantee systems such as a valve system, a power supply and distribution system, a cooling water system, a vacuum system and the like. The three branches of the high-flow low-pressure cold air branch 1, the high-flow medium-temperature medium-pressure branch 2 and the medium-low-flow high-temperature high-pressure branch 3 share a wind tunnel measurement and control system such as a wind tunnel control and monitoring system, a data acquisition system, a schlieren display system and the like. The three branches of the high-flow low-pressure cold air branch 1, the high-flow medium-temperature medium-pressure branch 2 and the medium-low-flow high-temperature high-pressure branch 3 share one set of main equipment such as a transition section support combined support foundation 4, a stable section and spray pipe support, a test section, a diffuser, a model mechanism, a cooler and the like. The heaters of the large-flow medium-temperature medium-pressure branch 2 and the medium-small-flow high-temperature high-pressure branch 3 are vertically installed in a suspension mode. The high-flow low-pressure cold air branch 1 is provided with a separate stabilizing section and a transition section I7 and a set of spray pipes I8 with different Mach numbers, the transition section is supported by a support seat I9, a support seat II10 and a support seat III11 in a combined support foundation 4, and the stabilizing section and the spray pipes are supported together. The high-flow medium-temperature medium-pressure branch 2 is provided with a separate stabilizing section, a transition section II12, a thermal valve I13 and a set of spray pipes II14 with different Mach numbers, the transition section is supported by a supporting seat II10 and a supporting seat III11 in a combined supporting base 4, and the stabilizing section and the spray pipes are supported together. The medium-small flow high-temperature high-pressure branch 3 is provided with a separate stabilizing section and a transition section III15, a set of spray pipes III16 with different Mach numbers and a thermal valve II17, the transition section is supported as a supporting seat III11 in a combined supporting base 4, and the stabilizing section and the spray pipes are supported and shared.
In summary, the three-branch tandem type hypersonic wind tunnel overall structure provided by the invention realizes the requirement of wide parameter operation simulation range required by advanced hypersonic speed by the three-branch tandem type overall structure layout mode.
According to the three-branch tandem type hypersonic wind tunnel overall structure provided by the invention, the overall structure layout mode of the three-branch tandem type hypersonic wind tunnel can be implemented step by step according to the investment budget condition in the project construction stage and the task requirement conditions in different periods, so that the investment cost of later-stage newly-added branch construction is effectively reduced, and the branch with later-stage performance expansion can rapidly have the test capability.
According to the three-branch tandem type hypersonic wind tunnel overall structure provided by the invention, the overall structure layout mode of the three-branch tandem type hypersonic wind tunnel is adopted, different test states can be quickly switched, only the stable section, the transition section, the spray pipe and the thermal valve on the heater need to be replaced when the state is changed, the equipment replacement workload is small, and the period is short.
According to the three-branch tandem type hypersonic wind tunnel overall structure provided by the invention, the main structure adopts a two-layer or local two-layer layout mode, and the function partition is reasonably carried out according to different functions of each system of wind tunnel equipment, so that the influence of electromagnetic radiation and noise interference on test equipment and personnel in the wind tunnel operation process is effectively avoided, and the damage of high-pressure leakage to personnel is reduced.
According to the three-branch tandem type hypersonic wind tunnel overall structure provided by the invention, the main body equipment adopts a two-layer or local two-layer layout mode, so that the construction difficulty of installing a foundation deep foundation pit for large-scale equipment such as a heater, a test section and a model is reduced.
The three-branch series type hypersonic wind tunnel overall structure provided by the invention can realize the requirement of an advanced hypersonic wind tunnel on wide parameter simulation in a step-by-step implementation mode; the wind tunnel operation state is convenient to switch, the wind tunnel layout is simple, and the wind tunnel safe operation and standardized management are facilitated. The three-branch series type hypersonic wind tunnel overall structure layout can be popularized and applied to hypersonic wind tunnel construction layouts with different calibers.
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 (3)
1. A three-branch series type hypersonic wind tunnel overall structure is characterized by comprising three branches dividing a hypersonic wind tunnel Mach number simulation range from 3 to 10 into three intervals, wherein the three branches are respectively a high-flow low-pressure air cooling branch (1), a high-flow medium-temperature medium-pressure branch (2) and a medium-and-small-flow high-temperature high-pressure branch (3), the Mach number operation range of the high-flow low-pressure air cooling branch (1) is less than or equal to Mach number 4, the Mach number operation range of the high-flow medium-temperature medium-pressure branch (2) is greater than 4 and less than or equal to 7, the Mach number operation range of the medium-and-small-flow high-temperature high-pressure branch (3) is greater than 7 and less than or equal to 10, the high-flow low-pressure air cooling branch (1), the high-flow medium-temperature medium-pressure branch (2) and the medium-and-small-flow high-temperature high-pressure branch (3) share a main equipment factory building and a scientific research auxiliary building, the high-flow low-pressure cold air branch (1), the high-flow medium-temperature medium-pressure branch (2) and the medium-low-flow high-temperature high-pressure branch (3) share a set of high-pressure air supply pipeline, a valve system, a power supply and distribution system, a cooling water system and a vacuum system, the large-flow low-pressure cold air branch (1), the large-flow medium-temperature medium-pressure branch (2) and the medium-low-flow high-temperature high-pressure branch (3) share a set of wind tunnel control and monitoring system, a data acquisition system and a schlieren display system, the high-flow low-pressure cold air branch (1), the high-flow medium-temperature medium-pressure branch (2) and the medium-low-flow high-temperature high-pressure branch (3) share a set of combined supporting foundation (4), a stable section support (5), a spray pipe support (6), a test section, a diffuser, a model mechanism and a cooler, the combined supporting foundation (4) comprises a supporting seat I (9), a supporting seat II (10) and a supporting seat III (11);
the heaters of the high-flow medium-temperature and medium-pressure branch (2) and the medium-low-flow high-temperature and high-pressure branch (3) are vertically installed in a suspension manner;
the high-flow low-pressure cold air branch (1) is provided with a stable section and a transition section I (7) and a set of spray pipes I (8) with different Mach numbers, and the stable section and the transition section I (7) are supported by a support seat I (9), a support seat II (10) and a support seat III (11);
the high-flow medium-temperature medium-pressure branch (2) is provided with a stabilizing section and a transition section II (12), a hot valve I (13) and a set of spray pipes II (14) with different Mach numbers, and the supporting of the stabilizing section and the transition section II (12) is a supporting seat II (10) and a supporting seat III (11);
the medium-small flow high-temperature high-pressure branch (3) is provided with a stable section and a transition section III (15), a set of spray pipes III (16) with different Mach numbers and a thermal valve II (17), and the support of the stable section and the transition section III (15) is a support seat III (11);
the hypersonic wind tunnel is characterized in that a large-flow low-pressure air cooling branch (1), a large-flow medium-temperature medium-pressure branch (2) and a medium-and-small-flow high-temperature high-pressure branch (3) share a wind tunnel central axis (18), the same wind tunnel central elevation is used as the large-flow low-pressure air cooling branch (1) is in the front, the middle is used as the large-flow medium-temperature medium-pressure branch (2), the middle is used as the medium-and-small-flow high-temperature high-pressure branch (3), and the large-flow low-pressure air cooling branch (1), the large-flow medium-temperature medium-pressure branch (2) and the medium-and-small-flow high-temperature high-pressure branch (3) adopt a serial layout.
2. The total structure of the three-branch tandem type hypersonic wind tunnel according to claim 1, wherein the hypersonic wind tunnel adopts a two-layer or local two-layer layout mode, wherein the first layer is used for laying out a high-pressure pipeline and a valve wind tunnel air supply system, a power supply and distribution system, a cooling water system, a large-scale equipment foundation, spare parts and storage and stream logistics channels of replacement parts, and the second layer is used for laying out main equipment of the hypersonic wind tunnel and providing space and stream logistics channels required for equipment operation, maintenance and operation.
3. The total structure of a three-branch tandem hypersonic wind tunnel according to claim 1, wherein the supporting seat I (9), the supporting seat II (10), the supporting seat III (11), the stabilizing section support (5) and the nozzle support (6) are all fixed on the top of the combined supporting foundation (4).
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| CN114279671B (en) * | 2022-03-03 | 2022-05-17 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method for designing low-Mach-number total-enthalpy flight platform based on existing hypersonic wind tunnel |
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