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Double-sealing-ring axial fixing method for small polish rod sensor for high-enthalpy pulse wind tunnel

A technology with axial fixation and double sealing rings, which is applied in the testing of machines/structural components, instruments, measuring devices, etc., can solve the problems of narrow measurement space, dense distribution of measurement points and effective test time in milliseconds, and shorten the response time, avoid loosening and movement, and facilitate disassembly

Active Publication Date: 2021-06-11
中国空气动力研究与发展中心空天技术研究所
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention intends to provide a method for axially fixing double sealing rings of a small polished rod sensor used in a high-enthalpy pulsed wind tunnel to solve the problem of narrow measurement space, dense distribution of measuring points, and millisecond-level effective test time. Technical issues such as static pressure, total space pressure or Pitot pressure and boundary layer parameter measurement in caves

Method used

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  • Double-sealing-ring axial fixing method for small polish rod sensor for high-enthalpy pulse wind tunnel
  • Double-sealing-ring axial fixing method for small polish rod sensor for high-enthalpy pulse wind tunnel
  • Double-sealing-ring axial fixing method for small polish rod sensor for high-enthalpy pulse wind tunnel

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Effect test

Embodiment 1

[0032] Such as figure 1 , figure 2 with image 3 As shown, the axial fixation method of the small polished rod sensor for the high-enthalpy pulsed wind tunnel with double sealing rings includes the following steps:

[0033] Step 1: The small-sized polished rod pulsation pressure sensor 6 detachably inserted into the sensor assembly by the fixed installation kit forms an installation assembly;

[0034] Step 2: detachably connect the installation component to the model measurement part 1;

[0035] Wherein, the fixed installation kit includes a first sealing ring 2, a first compression ring 3, a second sealing ring 4 and a fixing part 5, and the sensor assembly includes a small polished rod pulsation pressure sensor 6, a sensor cable 7 and a temperature compensation unit 8;

[0036] Model measurement part 1 is coaxially provided with an airflow hole and a mounting hole, and the airflow hole and the mounting hole are connected, the diameter of the airflow hole is Φ1mm, the de...

Embodiment 2

[0043] The difference between this embodiment and Embodiment 1 is that the fixing part 5 includes a fixing block 11 and a second pressure ring 10, the fixing block 11 is coaxially provided with a through hole and a counterbore, and the through hole and the counterbore penetrate through, and the second pressure ring The outer diameter of 10 is adapted to the inner diameter of the counterbore, and the inner diameter of the second pressure ring 10 and the inner diameter of the through hole are adapted to the outer diameter of the small polished rod pulsation pressure sensor 6; the fixed block 11 is connected with the model measuring part 1 by screws 12 .

[0044] refer to Figure 4 with Figure 5 , the double seal ring axial fixed structure of the small polished rod sensor used in the high-enthalpy pulsed wind tunnel of Embodiment 2 can be applied to the boundary layer total pressure measurement bent frame 9 composed of three total pressure measurement points, and the sensor is ...

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Abstract

The invention belongs to the technical field of experimental aerodynamics, and discloses a double-sealing-ring axial fixing method for a small polish rod sensor for a high-enthalpy pulse wind tunnel, and the method comprises the following steps: 1, enabling a fixed mounting kit to be detachably sleeved with a small polish rod pulsating pressure sensor of a sensor assembly, and forming amounting assembly; and 2, detachably connecting the mounting assembly with a model measurement part. The fixed mounting kit comprises a first sealing ring, a first pressing ring, a second sealing ring and a fixing part; the sensor assembly comprises a small polish rod pulsating pressure sensor, a sensor cable and a temperature compensation unit; and the model mounting part is coaxially provided with an air flow hole and an mounting hole, and the air flow hole is communicated with the mounting hole. The mounting and fixing structure is small in enveloping size, reliable in fixation, convenient to disassemble and suitable for experimental researches such as static pressure, space total pressure or pitot pressure and boundary layer parameter measurement in the high-enthalpy pulse wind tunnel.

Description

technical field [0001] The invention relates to the technical field of experimental aerodynamics, in particular to a method for axially fixing double sealing rings of a small polished rod sensor used in a high-enthalpy pulsed wind tunnel. Background technique [0002] The dynamic pressure test in the wind tunnel test and the pressure test in the pulse wind tunnel all need to use the pulse pressure sensor. Common pulsating pressure sensors include threaded pressure sensors, small polished rod pulsating pressure sensors, and sheet-type pressure sensors. Among them, the threaded pulsation pressure sensor is likely to cause strong interference to the flow field due to the large thread size, so it is necessary to connect the pressure sensor and the transition section through threads to form an assembly, and the transition section is connected to the model measurement part to measure the total space pressure or Pitot pressure, but the sensor is included in the transition section,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06
CPCG01M9/065
Inventor 余安远张小庆于常安杨辉杨大伟陈锐杰曲俐鹏韩亦宇黎崎秦思贺佳佳张胜
Owner 中国空气动力研究与发展中心空天技术研究所
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