CN212621371U - Test device for static pressure probe movement test of transonic wind tunnel - Google Patents
Test device for static pressure probe movement test of transonic wind tunnel Download PDFInfo
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- CN212621371U CN212621371U CN202021232167.8U CN202021232167U CN212621371U CN 212621371 U CN212621371 U CN 212621371U CN 202021232167 U CN202021232167 U CN 202021232167U CN 212621371 U CN212621371 U CN 212621371U
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Abstract
The utility model discloses a transonic wind tunnel static pressure probe moves test and tests device, test device includes at least: the device comprises a static pressure probe, a wind tunnel test section and a moving and measuring mechanism; the moving and measuring mechanism is fixedly arranged at the center of the wind tunnel test section and is arranged along the axis direction of the wind tunnel test section; the front end of the static pressure probe is provided with a plurality of static pressure measuring holes for wind tunnel flow field calibration; the tail end of the static pressure probe is fixedly connected onto an electric push rod of the moving and measuring mechanism, and the electric push rod is configured to drive the static pressure probe to move back and forth along the central line direction of the wind tunnel test section. Through the structural design of the device, the static pressure probe can be subjected to position adjustment in the wind tunnel test section based on measurement requirements. Meanwhile, the static pressure probe acquires data by adopting a mode of moving and measuring the core flow at the same measuring point, so that the influence caused by the self difference of the long-axis probe at different measuring points is avoided.
Description
Technical Field
The utility model belongs to the technical field of the high-speed wind tunnel test, especially, relate to a transonic wind tunnel static pressure probe moves test and tests device.
Background
In order to meet the requirement of more refinement of modern advanced aircraft development and realize the aim of development of a wind tunnel test towards simulation reality and measurement refinement, higher requirements are provided for the flow field quality of a high-performance transonic wind tunnel.
In order to inspect the quality of the flow field of the wind tunnel and determine whether the wind tunnel meets the development requirement of an aircraft, the flow field calibration and measurement work needs to be carried out regularly. The items of flow field calibration mainly comprise a velocity field, a direction field, transonic speed ventilation wall wave-absorbing characteristics, a cavity wall boundary layer, airflow noise, turbulence, low-frequency pulsation of airflow and the like. Wherein the velocity field is a necessary calibration item.
In conventional speed field calibration, the mach number on the central line (core flow) of a test section is usually obtained by calculating static pressure measured by a long-axis probe and total pressure of a wind tunnel, and finally the axial distribution characteristic of the core flow mach number and the correction relation between the wind tunnel test mach number and the parking chamber mach number are obtained.
The tail part of the long shaft probe is fixedly arranged on the middle support and is positioned on the central line of the test section, and the head part of the long shaft probe needs to penetrate through the test section and the spray pipe section and extend to the contraction section, so that the length of the long shaft probe can reach tens of meters in a large transonic wind tunnel. In order to ensure the coincidence of the central line of the shaft probe and the axis of the wind tunnel, the strength and the rigidity of the shaft probe and ensure the safety of the wind tunnel test, the shaft probe needs to be tensioned and fixed by steel ropes at a plurality of positions of a spray pipe or a test section, the tooling is complex and certain influence is caused on the flow field of the test section. Meanwhile, a large number of holes and grooves are required to be formed in the spraying pipe section and the test section due to the need of pulling and fixing the tool, and the structure of the hole body is also adversely affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to overcome the problems of the prior art, the transonic wind tunnel static pressure probe moving testing device is provided, and the static pressure probe can be adjusted in position in a wind tunnel test section based on measurement requirements through the structural design of the device.
The purpose of the utility model is realized through the following technical scheme:
a transonic wind tunnel static pressure probe moving test testing device at least comprises: the device comprises a static pressure probe, a wind tunnel test section and a moving and measuring mechanism; the moving and measuring mechanism is fixedly arranged at the center of the wind tunnel test section and is arranged along the axis direction of the wind tunnel test section; the front end of the static pressure probe is provided with a plurality of static pressure measuring holes for wind tunnel flow field calibration; the tail end of the static pressure probe is fixedly connected onto an electric push rod of the moving and measuring mechanism, and the electric push rod is configured to drive the static pressure probe to move back and forth along the central line direction of the wind tunnel test section.
According to a preferred embodiment, the static pressure measuring holes are arranged perpendicular to the normal surface of the wall of the static pressure probe tube.
According to a preferred embodiment, the moving and measuring mechanism is provided with a circular ring-shaped base, and the electric push rod is sleeved inside the base.
According to a preferred embodiment, the displacement mechanism is fixed via a support arm, and the support arm is fixedly connected to a support structure outside the wind tunnel test section.
According to a preferred embodiment, the arms are of a bent blade-like construction.
According to a preferred embodiment, the front end of the hydrostatic probe is of a conical configuration.
According to a preferred embodiment, the tail end of the static pressure probe is of a columnar structure, and a curved transition is adopted between the front end and the tail end of the static pressure probe.
The main scheme and the further selection schemes of the utility model can be freely combined to form a plurality of schemes, which are the schemes that can be adopted and claimed by the utility model; and the utility model discloses also can the independent assortment between (each non-conflict selection) selection and between other choices. The technical solutions to be protected by the present invention, which are various combinations that can be known to those skilled in the art based on the prior art and the common general knowledge after understanding the present invention, are not exhaustive herein.
The utility model has the advantages that: the structural design of the device can reduce the blockage influence of the long shaft probe in the wind tunnel, and avoid the influence caused by the interference of hole body tools such as supporting and bracing wires. In addition, the static pressure probe acquires data by adopting the mode of moving and measuring the core flow at the same measuring point, so that the influence caused by the self difference of different measuring points of the long-axis probe is avoided, and the accuracy is higher under the state of Mach number of 1.0.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
the device comprises a static pressure probe 1, a wind tunnel test section 2, a moving and measuring mechanism 3, an electric push rod 31, a base 32, a support arm 4, a static pressure measuring hole 5 and a wind tunnel airflow 6.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are 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 some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Additionally, the utility model discloses it is pointed out that, in the utility model, if do not write out structure, connection relation, positional relationship, power source relation etc. that concretely relates to very much, then the utility model relates to a structure, connection relation, positional relationship, power source relation etc. are technical personnel in the field on prior art's basis, can not learn through creative work.
Example 1:
referring to fig. 1, there is shown a transonic wind tunnel static pressure probe movement test device, comprising: the device comprises a static pressure probe 1, a wind tunnel test section 2, a moving and measuring mechanism 3 and a support arm 4.
Preferably, the moving and measuring mechanism 3 is fixedly arranged at the center of the wind tunnel test section 2 and is arranged along the axis direction of the wind tunnel test section 2.
Preferably, the moving and measuring mechanism 3 is fixed by a support arm 4, and the support arm 4 is fixedly connected to a support structure outside the wind tunnel test section 2. Further, the support arm 4 is of a bent blade-shaped structure.
Preferably, the front end of the static pressure probe 1 is provided with a plurality of static pressure measuring holes 5 for wind tunnel flow field calibration. The static pressure measuring hole 5 and the normal surface of the pipe wall of the static pressure probe 1 are arranged perpendicular to each other. And the front end of the static pressure probe 1 is arranged facing the flow direction of the wind tunnel airflow 6 in the wind tunnel test section 2.
Preferably, the tail end of the static pressure probe 1 is fixedly connected to an electric push rod 31 of the moving and measuring mechanism 3, and the electric push rod 31 is configured to drive the static pressure probe 1 to move back and forth along the central line direction of the wind tunnel test section 2. Therefore, static pressure measurement at different positions in the wind tunnel test section 2 is realized.
Preferably, the moving and measuring mechanism 3 is provided with a circular base 32, and the electric push rod 31 is sleeved inside the base 32.
Preferably, the front end of the static pressure probe 1 is of a conical structure. The tail end of the static pressure probe 1 is of a columnar structure, and a smooth curved surface transition is adopted between the front end and the tail end of the static pressure probe 1. The spread angle of the joint of the front end and the tail end of the static pressure probe 1 is less than 1.9 degrees.
The utility model discloses the concrete implementation process of device includes:
before the wind tunnel is started, the static pressure probe 1 is installed on the moving and measuring mechanism 3 and is in a zero position state. Starting the wind tunnel after the test is started, driving the static pressure probe 1 to move forward by a specified stroke by the moving and measuring mechanism 3 after the flow field is stabilized, reaching a preset position, starting data collection after the flow field is stabilized, and repeating the actions after the data collection is completed and reaching the next position. And after all the data acquisition is finished, the static pressure probe 1 restores to the initial position, and after the test is finished.
The technical effects are as follows: the device can reduce the blockage influence of the long shaft probe in the wind tunnel when the wind tunnel static pressure measurement is carried out, and avoid the influence caused by the interference of tunnel body tools such as supporting and tension lines. In addition, the static pressure probe acquires data by adopting the mode of moving and measuring the core flow at the same measuring point, so that the influence caused by the self difference of different measuring points of the long-axis probe is avoided, and the accuracy is higher under the state of Mach number of 1.0.
The aforesaid the utility model discloses basic embodiment and each further alternative can the independent assortment in order to form a plurality of embodiments, is the utility model discloses can adopt and claim the embodiment of protection. In the scheme of the utility model, each selection example can be combined with any other basic examples and selection examples at will.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A transonic wind tunnel static pressure probe moving test device is characterized by at least comprising: the device comprises a static pressure probe, a wind tunnel test section and a moving and measuring mechanism;
the moving and measuring mechanism is fixedly arranged at the center of the wind tunnel test section and is arranged along the axis direction of the wind tunnel test section;
the front end of the static pressure probe is provided with a plurality of static pressure measuring holes for wind tunnel flow field calibration;
the tail end of the static pressure probe is fixedly connected onto an electric push rod of the moving and measuring mechanism, and the electric push rod is configured to drive the static pressure probe to move back and forth along the central line direction of the wind tunnel test section.
2. The transonic wind tunnel static pressure probe movement testing device according to claim 1, wherein said static pressure test holes are arranged perpendicular to the normal surface of the static pressure probe tube wall.
3. The transonic wind tunnel static pressure probe movement testing device according to claim 1, wherein said movement testing mechanism is provided with a circular base, and said electric push rod is sleeved inside said base.
4. The transonic wind tunnel static pressure probe movement testing device according to claim 3, wherein said movement testing mechanism is fixed via a support arm, and said support arm is fixedly connected to a support structure outside said wind tunnel test section.
5. The transonic wind tunnel static pressure probe movement testing device according to claim 4, wherein said arm is a bent blade-like structure.
6. The transonic wind tunnel static pressure probe movement testing device according to claim 1, wherein a front end of the static pressure probe is of a conical structure.
7. The transonic wind tunnel static pressure probe moving testing device according to claim 6, wherein the tail end of the static pressure probe is of a columnar structure, and a curved transition is adopted between the front end and the tail end of the static pressure probe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021232167.8U CN212621371U (en) | 2020-06-29 | 2020-06-29 | Test device for static pressure probe movement test of transonic wind tunnel |
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| CN202021232167.8U CN212621371U (en) | 2020-06-29 | 2020-06-29 | Test device for static pressure probe movement test of transonic wind tunnel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114608791A (en) * | 2022-05-10 | 2022-06-10 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for obtaining diamond area range of supersonic jet flow field of high-speed free jet wind tunnel |
| CN117147092A (en) * | 2023-10-30 | 2023-12-01 | 中国航空工业集团公司沈阳空气动力研究所 | Ultrasonic static pressure probe-based acoustic explosion near-field space pressure measurement device |
-
2020
- 2020-06-29 CN CN202021232167.8U patent/CN212621371U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114608791A (en) * | 2022-05-10 | 2022-06-10 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for obtaining diamond area range of supersonic jet flow field of high-speed free jet wind tunnel |
| CN114608791B (en) * | 2022-05-10 | 2022-07-12 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for obtaining high-speed free jet wind tunnel supersonic jet flow field diamond area range |
| CN117147092A (en) * | 2023-10-30 | 2023-12-01 | 中国航空工业集团公司沈阳空气动力研究所 | Ultrasonic static pressure probe-based acoustic explosion near-field space pressure measurement device |
| CN117147092B (en) * | 2023-10-30 | 2024-01-23 | 中国航空工业集团公司沈阳空气动力研究所 | Ultrasonic static pressure probe-based acoustic explosion near-field space pressure measurement device |
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