CN210533664U - Quick detection device of gas tightness suitable for low-speed wind tunnel wind speed measurement system - Google Patents
Quick detection device of gas tightness suitable for low-speed wind tunnel wind speed measurement system Download PDFInfo
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- CN210533664U CN210533664U CN201921965031.5U CN201921965031U CN210533664U CN 210533664 U CN210533664 U CN 210533664U CN 201921965031 U CN201921965031 U CN 201921965031U CN 210533664 U CN210533664 U CN 210533664U
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Abstract
The utility model discloses an air tightness short-term test device suitable for low-speed wind-tunnel wind speed measurement system, including sealed sprue, a left side, the foraminiferous fastening nut in the right side, a left side, right side sealing washer, wind speed pipe detects the sleeve, digital pressure gauge, the pointer manometer, gas circuit joint and gas circuit valve, wind speed pipe detects the sleeve and installs digital pressure gauge and pointer manometer, wind speed pipe detects telescopic left end and is connected with the foraminiferous fastening nut in a left side through left sealing washer, install sealed sprue on the foraminiferous fastening nut in a left side, wind speed pipe detects telescopic right-hand member and is connected with the foraminiferous fastening nut in the right side through right sealing washer, the wind speed pipe inserts in the foraminiferous fastening nut in the right side, wind speed pipe detects telescopic centre and. The device leakproofness is strong, can install fast on low-speed wind-tunnel wind speed pipe, can improve low-speed wind-tunnel wind speed measurement system's gas tightness detection efficiency and air flow velocity measurement result's precision.
Description
Technical Field
The utility model relates to a gas tightness short-term test device suitable for low-speed wind-tunnel wind speed measurement system.
Background
The wind tunnel test is an important means of aerodynamic research, has irreplaceable superiority, and has important function for accurately controlling and measuring wind tunnel airflow parameters (speed, pressure and temperature) to ensure the accuracy and reliability of test results. According to the Bernoulli equation, the dynamic pressure of the air flow can be obtained after the total pressure and the static pressure of the air flow of the wind tunnel are measured, and further the air flow speed is obtained.
The low-speed wind tunnel wind speed measurement system mainly comprises a wind speed pipe and a pressure acquisition system, wherein a total pressure measurement hole is positioned at the top point of a windward circular arc curved surface of the wind speed pipe, and a static pressure measurement hole is positioned on the circumferential wall surface of the wind speed pipe. The traditional detection method is that a hose connecting a wind speed pipe with a main static pressure measuring hole and a hose connecting a static pressure measuring hole are disconnected, and then the wind speed pipe and a pressure acquisition system are respectively detected.
Disclosure of Invention
To above problem, the utility model discloses a gas tightness short-term test device suitable for low-speed wind-tunnel wind speed measurement system can install fast on low-speed wind-tunnel wind speed pipe, can accomplish low-speed wind-tunnel wind speed measurement system's gas tightness detection achievement fast, including the gas tightness detection of wind speed pipe, pressure acquisition system's calibration.
The utility model discloses the technique that adopts as follows: the utility model provides an air tightness short-term test device suitable for low-speed wind-tunnel wind speed measurement system, includes sealed sprue, the foraminiferous fastening nut in left side, left sealing washer, anemoscope detection sleeve, digital pressure gauge, pointer manometer, right sealing washer, the foraminiferous fastening nut in right side, gas circuit joint, gas circuit valve, anemoscope detection sleeve install digital pressure gauge and pointer manometer, anemoscope detection sleeve's left end is connected with the foraminiferous fastening nut in left side through left sealing washer, installs sealed sprue on the foraminiferous fastening nut in left side, anemoscope detection sleeve's right-hand member passes through right sealing washer and is connected with the foraminiferous fastening nut in right side, the anemoscope inserts in the foraminiferous fastening nut in right side, the anemoscope detects telescopic centre and passes through gas circuit joint and is.
The utility model discloses still have following technical characteristic:
1. the length of the anemometer-pipe detection sleeve is larger than the distance between the total pressure measuring hole and the static pressure measuring hole.
2. When the air tightness of the total pressure measuring hole of the air speed pipe is detected and the total pressure measuring hole is calibrated with a pressure acquisition system, a standard pressure source is connected with an air path valve through a hose, the air speed pipe is inserted into an air speed pipe detection sleeve from a right hole fastening nut, the total pressure measuring hole of the air speed pipe is located inside the air speed pipe detection sleeve, and a static pressure measuring hole of the air speed pipe is located outside the air speed pipe detection sleeve.
3. When the air tightness of the static pressure measuring hole of the air speed pipe is detected and the static pressure measuring hole is calibrated with a pressure acquisition system, the standard pressure source is connected with the air path valve through a hose, the sealing block is detached, the air speed pipe is inserted into the air speed pipe detection sleeve from the fastening nut with the right hole, the total pressure measuring hole of the air speed pipe penetrates through the left end of the air speed pipe detection sleeve and is located outside the air speed pipe detection sleeve, and the static pressure measuring hole of the air speed pipe is located inside the air speed pipe detection sleeve.
The utility model has the advantages of as follows and beneficial effect: the device leakproofness is strong, can install fast on low-speed wind tunnel wind speed pipe, can directly exert standard pressure to total pressure measuring hole and static pressure measuring hole of wind speed pipe respectively, and whether digital manometer and pointer manometer can show exerted standard pressure rapidly and change, can improve low-speed wind tunnel wind speed measurement system's gas tightness detection efficiency and air current speed measurement result's precision, can improve test efficiency for producing type low-speed wind tunnel, reduction test cost.
Drawings
FIG. 1 is a schematic diagram of a structure for detecting a total pressure hole of an air velocity pipe by using the device;
FIG. 2 is a schematic diagram of the detection structure of the device for the static pressure hole of the wind speed pipe;
Detailed Description
Further description is given below, by way of example, with reference to the accompanying drawings:
example 1
As shown in fig. 1, a quick air tightness detection device suitable for a low-speed wind tunnel wind speed measurement system comprises a sealing block 1, a fastening nut 2 with a left hole, a left sealing ring 3, a wind speed pipe detection sleeve 4, a digital pressure gauge 5, a pointer pressure gauge 6, a right sealing ring 7, a fastening nut 8 with a right hole, an air passage joint 9 and an air passage valve 10; the low-speed wind tunnel wind speed measuring system mainly comprises a wind speed pipe 12 and a pressure acquisition system 13. The anemoscope 12 is inserted into the anemoscope detection sleeve 4 and is locked and sealed by the right sealing ring 7 and the right fastening nut 8 with holes. The standard pressure source 11 is connected with the air circuit valve 10 of the device through a hose 14, applies standard pressure to a closed cavity formed inside the air speed pipe detection sleeve 4, and can quickly finish air tightness detection of the total pressure hole of the air speed pipe 12 and calibration of the pressure acquisition system 13 by observing whether the readings of the digital pressure gauge 5 and the pointer pressure gauge 6 are changed.
Example 2
As shown in fig. 2, with the structure of embodiment 1, the sealing block 1 is removed, the wind speed pipe 12 is passed through the wind speed pipe detection sleeve 4, the static pressure hole of the wind speed pipe 12 is ensured to be located inside the cavity of the wind speed pipe detection sleeve 4, and the wind speed pipe 4 is locked and sealed by the left perforated fastening nut 2, the left sealing ring 3, the right sealing ring 7 and the right perforated fastening nut 8. The standard pressure source 11 is connected with the device through a hose 14, applies standard pressure to a closed cavity formed inside the wind speed pipe detection sleeve 4, and can quickly finish air tightness detection of the static pressure hole of the wind speed pipe 12 and calibration of the pressure acquisition system 13 by observing whether the numerical pressure gauge 5 and the pointer pressure gauge 6 change in reading.
The device can realize the rapid detection work of the total pressure measuring hole of the low-speed wind tunnel wind speed pipe by installing the sealing block; and the quick detection work of the static pressure measuring hole of the low-speed wind tunnel air speed pipe can be realized by removing the sealing block. Meanwhile, the two pressure gauges can perform mutual detection and supervision functions, so that the device can accurately and reliably detect the quick detection result of the low-speed wind tunnel wind speed measurement system. The device can simultaneously complete the air tightness detection of the wind speed pipe and the calibration of a pressure acquisition system by independently applying standard pressure to the main static pressure hole and the static pressure hole of the wind speed pipe.
Claims (4)
1. The utility model provides an air tightness short-term test device suitable for low-speed wind tunnel wind speed measurement system, a serial communication port, including sealed sprue, the foraminiferous fastening nut in a left side, left sealing washer, anemoscope detection sleeve, digital pressure gauge, pointer manometer, right sealing washer, the foraminiferous fastening nut in the right side, gas circuit joint and gas circuit valve, anemoscope detection sleeve install digital pressure gauge and pointer manometer, anemoscope detection sleeve's left end is connected with the foraminiferous fastening nut in a left side through left sealing washer, installs sealed sprue on the foraminiferous fastening nut in a left side, anemoscope detection sleeve's right-hand member passes through right sealing washer and is connected with the foraminiferous fastening nut in the right side, the anemoscope inserts in the foraminiferous fastening nut in the right side, the anemoscope detection sleeve's centre.
2. The device for quickly detecting the air tightness of the wind speed measuring system of the low-speed wind tunnel according to claim 1, wherein the length of the wind speed pipe detection sleeve is greater than the distance between the total pressure measuring hole and the static pressure measuring hole.
3. The device of claim 2, wherein when the air tightness of the total pressure measuring hole of the wind speed pipe is detected and the total pressure measuring hole is calibrated with the pressure acquisition system, the standard pressure source is connected with the air passage valve through a hose, the wind speed pipe is inserted into the wind speed pipe detection sleeve from the right hole fastening nut, the total pressure measuring hole of the wind speed pipe is located inside the wind speed pipe detection sleeve, and the static pressure measuring hole of the wind speed pipe is located outside the wind speed pipe detection sleeve.
4. The device for rapidly detecting the air tightness of the wind speed measuring system of the low-speed wind tunnel according to claim 2, wherein a standard pressure source is connected with a gas circuit valve through a hose, a sealing block is removed, a wind speed pipe is inserted into a wind speed pipe detection sleeve from a fastening nut with a right hole, a total pressure measuring hole of the wind speed pipe penetrates through the left end of the wind speed pipe detection sleeve and is positioned outside the wind speed pipe detection sleeve, and a static pressure measuring hole of the wind speed pipe is positioned inside the wind speed pipe detection sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921965031.5U CN210533664U (en) | 2019-11-14 | 2019-11-14 | Quick detection device of gas tightness suitable for low-speed wind tunnel wind speed measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921965031.5U CN210533664U (en) | 2019-11-14 | 2019-11-14 | Quick detection device of gas tightness suitable for low-speed wind tunnel wind speed measurement system |
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| CN210533664U true CN210533664U (en) | 2020-05-15 |
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| CN201921965031.5U Active CN210533664U (en) | 2019-11-14 | 2019-11-14 | Quick detection device of gas tightness suitable for low-speed wind tunnel wind speed measurement system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111122108A (en) * | 2020-03-18 | 2020-05-08 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Air blocking device for air tightness detection and pressure static calibration of wind tunnel pneumatic probe |
| CN115343500A (en) * | 2021-05-12 | 2022-11-15 | 中光电智能机器人股份有限公司 | Wind speed detection system and wind speed detection method |
-
2019
- 2019-11-14 CN CN201921965031.5U patent/CN210533664U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111122108A (en) * | 2020-03-18 | 2020-05-08 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Air blocking device for air tightness detection and pressure static calibration of wind tunnel pneumatic probe |
| CN115343500A (en) * | 2021-05-12 | 2022-11-15 | 中光电智能机器人股份有限公司 | Wind speed detection system and wind speed detection method |
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