CN115824572A - Wind tunnel dynamic pressure measuring device and measuring method - Google Patents
Wind tunnel dynamic pressure measuring device and measuring method Download PDFInfo
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- CN115824572A CN115824572A CN202211640741.7A CN202211640741A CN115824572A CN 115824572 A CN115824572 A CN 115824572A CN 202211640741 A CN202211640741 A CN 202211640741A CN 115824572 A CN115824572 A CN 115824572A
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Abstract
The invention discloses a wind tunnel dynamic pressure measuring device and a measuring method. The device is provided with a function of researching the influence of the distance between the reference probe and the measuring probe on the test of the pulsating pressure of the wind tunnel; the device is provided with the function of researching the influence of the cavities with different lengths at the front end of the sensor on the test of the pulsating pressure of the wind tunnel; meanwhile, the device also takes account of the capability of testing the total and static pressure pulsating pressure of the wind tunnel. The device is small and exquisite, is suitable for the influence of various wind tunnel pulsating pressure tests, and effectively meets the severe requirements of high precision, high response frequency and small flow field interference of a wind tunnel dynamic pressure flow field.
Description
Technical Field
The invention relates to wind tunnel testing, in particular to a wind tunnel dynamic pressure measuring device and a measuring method.
Background
In the design of the supersonic aircraft, the boundary layer transition position is an important parameter, and the boundary layer transition characteristic is particularly important for the next generation of supersonic maneuvering and stealthy aircraft. The low-turbulence low-noise supersonic wind tunnel is also called a 'silent' supersonic wind tunnel and is necessary equipment for researching transition of a boundary layer under a supersonic condition, and the turbulence of a flow field of the supersonic wind tunnel needs to reach the level of the air turbulence of an aircraft at a cruising height.
The area with small static pressure pulsation in the flow field of the 'silent' supersonic wind tunnel is called a 'silent' area, and the characteristic of the 'silent' refers to the characteristic that the value of the static pressure pulsation is small. At present, the flow field parameter measurement in the wind tunnel is usually realized by adopting a pneumatic probe. The method comprises the steps of placing a pneumatic probe in a wind tunnel flow field, obtaining air pressure of the wind tunnel flow field through a pressure guide hole in the probe, guiding the air pressure out of a tunnel body through a pressure guide pipe, and then configuring a measuring system with a pressure sensor, an amplifier and a data collector outside the tunnel body to collect and process air pressure data, so that measurement of wind tunnel flow field parameters is achieved.
However, the existing measuring device and method have the following problems:
1. dynamic pressure measurement at different transverse positions of the wind tunnel and influence research of the distance between the reference probe and the measurement probe on the test can not be realized.
2. The interference introduced by a 'silent' supersonic wind tunnel flow field dynamic pressure measurement test is too large, and the precision of dynamic pressure measurement is difficult to ensure;
3. the static pressure pulsation and the total pressure pulsation of the wind tunnel cannot be measured simultaneously;
4. the influence of the cavities with different lengths at the front end of the probe on the test cannot be researched.
Disclosure of Invention
The invention aims to provide a wind tunnel dynamic pressure measuring device and a measuring method, which can realize dynamic pressure measurement at different transverse positions of a wind tunnel and influence research of the distance between a reference probe and a measuring probe on testing through the arrangement of the probe and a bent frame.
The purpose is realized by adopting the following technical scheme:
current measuring device includes probe and framed bent, the measurement to wind-tunnel dynamic pressure is realized to the connection through probe and framed bent, but its measuring condition is single, influence to wind-tunnel dynamic pressure measurement is explored under can not realizing the multiple condition, therefore the inventor has researched and developed a measuring device on this basis, the device includes measuring probe, reference probe and framed bent, be provided with the standing groove on the framed bent, a side of framed bent is provided with a plurality of mounting holes, mounting hole and standing groove intercommunication, the mounting hole can be dismantled with the one end of probe and be connected, the another side of framed bent is connected with inside hollow bracing piece, the bracing piece is connected with the framed bent. When the device is used, the measuring probe and the reference probe can be connected to the mounting holes in different positions of the bent frame, so that the influence of the distance between the reference probe and the measuring probe on pulsating pressure testing is realized, and dynamic pressure measurement in different transverse positions of the wind tunnel is realized.
Furthermore, when measuring, all be the pulsation measurement to wind-tunnel static pressure usually, less have the pulsation measurement to wind-tunnel total pressure, this device sets up measuring probe for dismantling measuring probe anterior segment and the measuring probe back end of connecting, when needing to measure the static pressure, changes measuring probe anterior segment for the static pressure anterior segment, when needing to measure total pressure, changes measuring probe anterior segment for total pressure anterior segment. Static pressure anterior segment and total pressure anterior segment all are provided with the air current and experience the chamber, and the measuring probe back end is provided with the inner chamber of intercommunication and the first installation cavity that is used for installing differential pressure sensor, and when the measuring probe back end is connected with the measuring probe anterior segment, the air current is experienced chamber and first installation cavity intercommunication.
For the static pressure anterior segment, the side of the front end of static pressure anterior segment is provided with the chamfer, and four through-holes are offered for following static pressure anterior segment circumference equipartition in the air current impression chamber, and the rear end of static pressure anterior segment is provided with the inner chamber, and the inner chamber all communicates with four through-holes, and when the static pressure anterior segment was connected with the measuring probe rear end, first installation cavity and four through-holes and static pressure anterior segment inner chamber intercommunication.
To always pressing the anterior segment, the side of the front end of always pressing the anterior segment is provided with the chamfer, and the rear end of always pressing the anterior segment is provided with the inner chamber, and the air current is experienced the cavity and is set up the recess at the front end, and the inner chamber intercommunication of recess and rear end, and the recess of its anterior segment is used for experiencing the air current. When total pressure anterior segment and measuring probe back end are connected, first installation cavity with always press the recess of anterior segment and the inner chamber intercommunication of rear end.
Therefore, the front section of the measuring probe is replaced as required, and the measurement of the static pressure pulsation and the total pressure pulsation of the wind tunnel can be realized.
Furthermore, a measuring adjusting ring is connected between the front section of the measuring probe and the rear section of the measuring probe. The measuring adjusting ring is located at the joint between the front section of the measuring probe and the rear section of the measuring probe, and the measuring adjusting ring is a plurality of in quantity and used for adjusting the length of the inner cavity of the front section of the measuring probe. When the influence of the cavities with different lengths at the front end of the probe on the test needs to be explored, the influence can be explored by adjusting the number of the adjusting rings.
In above-mentioned structure, the structure of reference probe matches each other with measurement probe's structure, and the reference probe is including dismantling reference probe anterior segment and the reference probe back end of connection, and the reference probe anterior segment is provided with the air current and feels the chamber, and the reference probe back end is provided with the inner chamber, and when reference probe anterior segment and reference probe back end are connected, the air current is experienced chamber and inner chamber intercommunication. And a reference adjusting ring is connected between the front section of the reference probe and the rear section of the reference probe. The reference probe and the measuring probe are similar in structure, and the main difference is that the length of each section of the reference probe is smaller than that of the measuring probe, and the rear section of the reference probe does not have a first mounting cavity for mounting a differential pressure sensor, namely, an inner cavity of the reference probe is a through hole with an equal section and does not have a mounting step.
Preferably, one end of the mounting hole is connected with the probe, the other end of the mounting hole is connected with an adapter, and the adapter is used for connecting the probe and the three-way pipe. The three-way pipe is arranged and matched with a measuring method, so that the device can directly replace the front section of the measuring probe, the front section of the reference probe and increase and decrease the measuring adjusting ring and the reference adjusting ring when the front end of the probe has different length cavities to the test and the static pressure pulsation and the wind tunnel total pressure pulsation are measured, and the connection of cables and air pipes in the bent frame does not need to be adjusted.
Specifically, the measurement method comprises the following steps:
respectively connecting one ends of the measuring probe and the reference probe to mounting holes of the bent; the placing groove is internally provided with a mounting groove for mounting an absolute pressure sensor. Connecting the three-way pipe to the mounting hole connected with the reference probe; connecting an air pipe of a differential pressure sensor in the measuring probe and an absolute pressure sensor air pipe to two ports of the three-way pipe respectively; the differential pressure sensor cable and the absolute pressure sensor cable are led out through the inside of the supporting rod.
Therefore, the front section of the measuring probe and the front section of the reference probe are directly adjusted or the measuring adjusting ring and the reference adjusting ring are increased or decreased during adjustment, so that the operation is more convenient.
In another aspect, the diameter of the probe of the present device is less than or equal to 5mm. The width of the bent is less than or equal to 70mm, and the height is less than or equal to 10mm. The device has small structure, is suitable for the influence of pulsating pressure tests of various wind tunnels (including total pressure and static pressure), and has more outstanding advantages particularly in small supersonic speed wind tunnels. In the measuring process, the introduction of interference generated by the measuring device can be effectively avoided, and the precision of measuring the dynamic pressure of the 'silent' supersonic wind tunnel flow field is further improved.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention relates to a wind tunnel dynamic pressure measuring device and a measuring method, wherein the device is provided with a function of researching the influence of the distance between a reference probe and a measuring probe on the pulsating pressure test of a wind tunnel (including total pressure and static pressure); the device is provided with the function of researching the influence of cavities with different lengths (or heights) at the front end of the sensor on the pulsating pressure test of the wind tunnel (including total pressure and static pressure); meanwhile, the device also gives consideration to the capability of testing the total and static pressure pulsating pressures of the wind tunnel. The device is small and exquisite, is suitable for the influence of various wind tunnel (including total pressure and static pressure) pulsating pressure tests, and effectively meets the severe requirements of high precision, high response frequency and small flow field interference of a dynamic pressure flow field of the wind tunnel.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of the structure of the apparatus in example 1;
FIG. 2 is a schematic view of a bent structure according to embodiment 1;
FIG. 3 is a schematic view of a structure of a measurement probe in example 2;
FIG. 4 is a schematic view of a reference probe in example 2;
FIG. 5 is a schematic view of a hydrostatic front-end structure in example 2;
FIG. 6 is a schematic structural view of a total pressure front stage in example 2;
FIG. 7 is a schematic structural view of example 3 in which a measurement adjustment ring and a reference adjustment ring are respectively connected to a measurement probe and a reference probe;
FIG. 8 is a schematic view showing the connection of the three-way pipe in example 5.
Reference numbers and corresponding part names in the drawings:
1-bent frame, 2-placing groove, 3-installing hole, 4-installing groove, 5-connecting hole, 6-connecting cover, 7-adapter, 8-measuring probe, 81-measuring probe front section, 82-measuring adjusting ring, 83-measuring probe rear section, 9-reference probe, 91-reference probe front section, 92-reference adjusting ring, 93-reference probe rear section, 10-supporting rod, 11-total pressure front section, 12-static pressure front section and 13-three-way pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and the accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the scope of the present invention.
Example 1
As shown in figure 1, the device comprises a probe and a bent frame, wherein the probe comprises a measuring probe 8 and a reference probe 9, the device further comprises a bent frame 1, the bent frame is of a structure shown in figure 2, a placing groove 2 is formed in the bent frame 1, a mounting groove 4 used for mounting an absolute pressure sensor is formed in the placing groove 2, the placing groove 2 is connected with a connecting cover 6 through a bolt, a plurality of mounting holes 3 are formed in one side face of the bent frame 1, the mounting holes 3 are communicated with the placing groove 2, the mounting holes 3 are detachably connected with one end of the probe, the other side face of the bent frame 1 is connected with a hollow supporting rod 10 inside, and the supporting rod 10 is connected with the bent frame. When in connection, the support rod is parallel to the probe.
In one or more embodiments, the measurement probe 8 and the reference probe 9 are threadedly coupled to the mounting hole 3.
In one or more embodiments, the other side surface of the bent frame 1 opposite to the mounting hole is provided with a connecting hole 5, the connecting hole 5 is used for connecting the support rod 10, and in some embodiments, the connecting hole 5 is in threaded connection or welded connection with the support rod 10.
When the test device is used, the measuring probe and the reference probe can be respectively connected to different mounting holes, and then the influence of the distance between the reference probe and the measuring probe on the test is explored.
In the measuring process, airflow flows in through the probe head, the pressure sensor realizes real-time acquisition of gust parameters, and airflow pressure signals at the probe head are output in a mode of converting the airflow pressure signals into voltage signals. Specifically, in the blowing process, (during static pressure dynamic pressure measurement), airflow respectively enters airflow sensing cavities of two probes through four through holes (namely static pressure holes) formed in the front sections of the measuring probes and the front sections of the reference probes, wherein the measuring ends of differential pressure sensors (the differential pressure sensors comprise the measuring ends and the reference ends) in the front sections of the measuring probes sense the airflow pressure; in the reference probe, the air flow is led to the three-way pipe 13 through the air flow sensing cavity and the inner cavity, and the three-way pipe is connected with the reference end of the differential pressure sensor at the front section of the measuring probe and the sensing end of the absolute pressure sensor (because the measuring probe is closer to the static pressure hole of the reference probe, the static pressures of the air flows sensed by the static pressure holes at the two probes are considered to be the same, namely the static pressure sensed by the reference probe is used as the pressure of the reference end of the differential pressure sensor of the measuring probe); the pressure measured by the differential pressure sensor at the front section of the measuring probe is the difference value between the pressure at the measuring end and the pressure at the reference end, wherein the pressure at the measuring end is the actual pressure (including a pulsation value) of the air flow, the pressure at the reference end is the steady-state pressure value of the air flow, and the difference value between the two is the dynamic pressure value; the related pressure is converted into a voltage signal through a differential pressure sensor and an absolute pressure sensor, and the voltage signal is analyzed and converted by a data acquisition system and then output. Therefore, the static pressure dynamic pressure measurement is realized, and the absolute pressure at the static pressure holes of the two probes is measured simultaneously.
Example 2
On the basis of the above-mentioned embodiment, as shown in fig. 3, the measurement probe 8 includes a measurement probe front section 81 and a measurement probe rear section 83 which are detachably connected, the measurement probe front section 81 is provided with an airflow sensing cavity, the measurement probe rear section 83 is provided with an inner cavity which is communicated with the inner cavity and a first installation cavity which is used for installing a differential pressure sensor, and when the measurement probe rear section 83 is connected with the measurement probe front section 81, the airflow sensing cavity is communicated with the first installation cavity. Correspondingly, the structure of the reference probe 9 is as shown in fig. 4, the reference probe 9 includes a reference probe front section 91 and a reference probe rear section 93 which are detachably connected, the reference probe front section 91 is provided with an airflow sensing cavity, the reference probe rear section 93 is provided with an inner cavity, and when the reference probe front section 91 is connected with the reference probe rear section 93, the airflow sensing cavity is communicated with the inner cavity. The reference probe and the measuring probe are similar in structure, and the main difference is that the length of each section of the reference probe is smaller than that of the measuring probe, and the rear section of the reference probe does not have a first mounting cavity for mounting a differential pressure sensor, namely, an inner cavity of the reference probe is a through hole with an equal section and does not have a mounting step.
In this embodiment, the front section 81 of the measurement probe is the hydrostatic front section 12 or the total pressure front section 11. When in use, the static pressure front section 12 or the total pressure front section 11 is replaced according to the requirement.
In one or more embodiments, the static pressure front section is shown in fig. 5, the front end of the static pressure front section is conical, the airflow sensing cavity is formed by four through holes uniformly distributed along the circumference of the static pressure front section, the rear end of the static pressure front section is provided with an inner cavity, the inner cavity is communicated with the four through holes, and when the static pressure front section is connected with the rear section 83 of the measurement probe, the first installation cavity is communicated with the four through holes and the inner cavity of the static pressure front section.
In one or more embodiments, the total pressure front section is as shown in fig. 6, a chamfer is arranged on a side surface of a front end of the total pressure front section, an inner cavity is arranged at a rear end of the total pressure front section, the airflow sensing cavity is a groove arranged at the front end, the groove is communicated with the inner cavity at the rear end, and the groove at the front section is used for sensing an airflow. When always pressing the anterior segment and being connected with measuring probe back end 83, first installation cavity and the recess of always pressing the anterior segment and the inner chamber intercommunication of rear end.
The front section 81 of the measuring probe is replaced as required, so that the measurement of the static pressure pulsation and the total pressure pulsation of the wind tunnel can be realized.
In one or more embodiments, the measurement probe rear section 83 is threadably connected to the measurement probe front section 81.
In one or more embodiments, the front reference probe segment 91 and the rear reference probe segment 93 are threadably connected.
Example 3
In addition to the above embodiments, as shown in fig. 7, a measurement adjustment ring 82 is connected between the measurement probe front stage 81 and the measurement probe rear stage 83. A reference adjustment ring 92 is connected between the front reference probe segment 91 and the rear reference probe segment 93. The number of the measurement adjusting rings 82 and the number of the reference adjusting rings 92 are several, when the number of the measurement adjusting rings connected between the front section 81 of the measurement probe and the rear section 83 of the measurement probe is larger, the length of the inner cavity of the front section 81 of the measurement probe is longer, and the length of the inner cavity of the front section of the probe is adjusted through the vehicle adjusting rings and the reference adjusting rings, so that the influence of the cavities with different lengths at the front end of the probe on the test is researched.
In some embodiments, the reference adjusting ring 92 is screwed to both the front reference probe segment 91 and the rear reference probe segment 93;
in some embodiments, the measurement adjustment ring 82 is threadably coupled to both the measurement probe front section 81 and the measurement probe rear section 83.
Example 4
In the above embodiment, the maximum diameter of the probe of the apparatus is 5mm, the width of the bent 1 is 60mm, and the height is 8mm.
In one or more embodiments, the probe has a maximum diameter of 4mm, and the bent 1 has a width of 60mm and a height of 8mm.
In one or more embodiments, the probe has a maximum diameter of 5mm, and the bent 1 has a width of 70mm and a height of 10mm.
The inventor finds that when the maximum diameter of the probe is not more than 5mm and the width and height directions of the bent frames are not more than 70mm and 10mm respectively in the experimental research process, the interference introduced in a 'silent' supersonic wind tunnel flow field dynamic pressure measurement test is small, and the accuracy of dynamic pressure measurement can be better ensured.
Example 5
On the basis of the above embodiment, as shown in fig. 7, one end of the mounting hole 3 is connected to the probe, and the other end of the mounting hole 3 is connected to the adapter 7, and the adapter 7 is used for connecting the probe and the three-way pipe 13. The adapter 7 is connected with the mounting hole through threads, and can be further connected through bolts after connection.
When in use, the measuring method of the device comprises the following steps:
one ends of a measuring probe 8 and a reference probe 9 are respectively connected to the mounting holes 3 of the bent frame 1;
as shown in fig. 8, the tee pipe 13 is connected to the mounting hole 3 to which the reference probe 9 is connected;
an air pipe of a differential pressure sensor and an air pipe of an absolute pressure sensor in the measuring probe 8 are respectively connected to two ports of the three-way pipe 13, after connection is finished, the absolute pressure sensor is fixed in the mounting groove through glue, and a differential pressure sensor cable and the absolute pressure sensor cable are led out through an inner cavity of the support rod 10. Wherein, the reference end of the differential pressure sensor air pipe is connected with the three-way pipe.
After the uploading work is confirmed to be finished and the inspection is correct, the connecting cover 6 of the bent frame is screwed down through the screw to seal the bent frame.
Wherein:
when static pressure and total pressure pulsation pressure conversion tests need to be carried out, the wiring state does not need to be adjusted, and only the front section of the measuring probe and the front section of the reference probe need to be replaced by corresponding front sections, such as a total pressure front section or a static pressure front section;
when the influence of the length (or height) of the inner cavity of the front section of the probe on (including total pressure and static pressure) pulsating pressure test needs to be developed, the wiring state does not need to be adjusted, the front section of the probe is separated from the rear section, and the number of adjusting rings is increased.
When the influence of the distance between the reference probe and the measuring probe on (including total pressure and static pressure) pulsating pressure test needs to be carried out, the wiring state needs to be adjusted, and the wiring state can be realized by independently adjusting the reference probe or the measuring probe and adjusting the two probes, and the related steps are as follows:
the first scheme is as follows: the method comprises the steps of independently adjusting a reference probe 9, firstly disconnecting an adapter 7 from a three-way pipe 13, keeping the others unchanged, disconnecting the reference probe 9 from a mounting hole 3 of a bent, determining the mounting position of the reference probe, completing the mounting of the reference probe and another mounting hole of the bent, and then sequentially connecting the adapter and the three-way pipe 13 to complete adjustment;
scheme II: the measuring probe is adjusted independently, firstly, the air pipe of the differential pressure sensor is separated from the three-way pipe 13, the cable of the differential pressure sensor is released through the supporting rod, then the reference probe is separated from the mounting hole of the bent frame, the air pipe and the cable of the differential pressure sensor are further released through the mounting hole of the original bent frame, and the others are kept unchanged; after the installation position of the measuring probe is determined, an air pipe and a cable of the differential pressure sensor are led to the inner cavity of the bent frame through another installation hole of the bent frame, the installation of the measuring probe and the installation hole is completed, the air pipe and the three-way pipe 13 of the differential pressure sensor are further connected, and then the cable of the differential pressure sensor is led to the inner cavity of the supporting rod to complete the adjustment;
the third scheme is as follows: simultaneously adjusting a reference probe and a measuring probe, firstly, after the adapter 7, an air pipe of the differential pressure sensor and the three-way pipe 13 are respectively disconnected, releasing a cable of the differential pressure sensor through a support rod; respectively disconnecting the reference probe and the measurement probe from the corresponding bent mounting holes, discharging the air pipe and the cable of the differential pressure sensor through the original bent mounting holes, and keeping the others unchanged; after the installation positions of the new reference probe and the new measuring probe are determined, the air pipe and the cable of the differential pressure sensor are led to the inner cavity of the bent frame through the new bent frame installation hole, the reference probe and the measuring probe are installed with the new bent frame installation hole corresponding to the new bent frame installation hole, the air pipe and the three-way pipe 13 of the differential pressure sensor, the reference probe installation hole and the adapter, the adapter and the three-way pipe 13 are further connected, and the cable of the differential pressure sensor is led into the inner cavity of the supporting rod to complete adjustment.
As used herein, "first" merely distinguishes respective components for clarity of description and is not intended to limit any order or to emphasize importance or the like. Further, the term "connected" used herein may be either directly connected or indirectly connected via other components without being particularly described.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a wind-tunnel dynamic pressure measuring device, includes probe and framed bent, its characterized in that, the probe includes measuring probe (8) and reference probe (9), this device still includes framed bent (1), be provided with standing groove (2) on framed bent (1), a side of framed bent (1) is provided with a plurality of mounting holes (3), mounting hole (3) and standing groove (2) intercommunication, mounting hole (3) can be dismantled with the one end of probe and be connected, the another side of framed bent (1) is connected with inside hollow bracing piece (10), bracing piece (10) are connected with the framed bent.
2. A wind tunnel dynamic pressure measurement device according to claim 1, characterised in that the measurement probe (8) comprises a measurement probe front section (81) and a measurement probe rear section (83) which are detachably connected.
3. A wind tunnel dynamic pressure measurement device according to claim 2, characterized in that a measurement adjustment ring (82) is connected between the front section (81) of the measurement probe and the rear section (83) of the measurement probe.
4. A wind tunnel dynamic pressure measurement device according to claim 1, characterised in that the reference probe (9) comprises a detachably connected front reference probe section (91) and rear reference probe section (93).
5. A wind tunnel dynamic pressure measurement device according to claim 4, characterised in that a reference adjustment ring (92) is connected between the front section (91) of the reference probe and the rear section (93) of the reference probe.
6. A wind tunnel dynamic pressure measuring device according to claim 1, characterized in that an installation groove (4) for installing an absolute pressure sensor is arranged in the placement groove (2).
7. A wind tunnel dynamic pressure measuring device according to claim 1, characterized in that one end of the mounting hole (3) is connected with the probe, the other end of the mounting hole (3) is connected with an adapter (7), and the adapter (7) is used for connecting the probe with the three-way pipe (13).
8. A wind tunnel dynamic pressure measurement device according to claim 1, wherein the diameter of the probe is less than or equal to 5mm.
9. A wind tunnel dynamic pressure measurement device according to claim 1, characterised in that the width of the bent (1) is less than or equal to 70mm and the height is less than or equal to 10mm.
10. A wind tunnel dynamic pressure measurement method, comprising a measurement device according to any one of claims 1 to 9, comprising the steps of:
one ends of a measuring probe (8) and a reference probe (9) are respectively connected to the mounting holes (3) of the bent frame (1);
connecting a three-way pipe (13) to the mounting hole (3) connected with the reference probe (9);
an air pipe of a differential pressure sensor in a measuring probe (8) and an absolute pressure sensor air pipe are respectively connected to two ports of a three-way pipe (13);
the differential pressure sensor cable and the absolute pressure sensor cable are led out through the inside of the supporting rod (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211640741.7A CN115824572A (en) | 2022-12-20 | 2022-12-20 | Wind tunnel dynamic pressure measuring device and measuring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211640741.7A CN115824572A (en) | 2022-12-20 | 2022-12-20 | Wind tunnel dynamic pressure measuring device and measuring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116124414A (en) * | 2023-04-12 | 2023-05-16 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Probe for measuring static pressure fluctuation |
| CN116609027A (en) * | 2023-07-14 | 2023-08-18 | 中国空气动力研究与发展中心低速空气动力研究所 | Pressure measuring rake |
-
2022
- 2022-12-20 CN CN202211640741.7A patent/CN115824572A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116124414A (en) * | 2023-04-12 | 2023-05-16 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Probe for measuring static pressure fluctuation |
| CN116124414B (en) * | 2023-04-12 | 2023-06-09 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Probe for measuring static pressure fluctuation |
| CN116609027A (en) * | 2023-07-14 | 2023-08-18 | 中国空气动力研究与发展中心低速空气动力研究所 | Pressure measuring rake |
| CN116609027B (en) * | 2023-07-14 | 2023-10-20 | 中国空气动力研究与发展中心低速空气动力研究所 | Pressure measuring rake |
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