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Quick-response thermocouple probe

A thermocouple and bare thermocouple technology, applied in the direction of measuring heat, using electrical devices, using electromagnetic means, etc., can solve the needs of dynamic temperature measurement of aero-engine, it is difficult to ensure strength and stiffness, and the frequency response of thermocouples is low. and other problems, to achieve the effect of convenient replacement of the even wire, compact structure, and little influence of the flow field

Inactive Publication Date: 2017-07-28
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently commonly used thermocouples are difficult to place alone in the flow field, and it is difficult to ensure strength and rigidity. Thermocouple wires are prone to bending, deformation, and damage under the impact of high-speed, high-temperature, high-pressure, and high-pulsation airflow
The existing armored thermocouple has a low frequency response and cannot meet the needs of dynamic temperature measurement of the flow field in the aero-engine

Method used

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Embodiment Construction

[0014] The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:

[0015] like figure 1 As shown, a kind of small inertial thermocouple probe of the present invention comprises couple wire support rod (1), probe support rod (2), corundum tube (3), thermocouple measuring joint (4), thermocouple couple wire (5 ), the paired wire rod is "Г" type, the double wire rod (1) has a diameter of 3 mm, a wall thickness of 0.5 mm, and a height of 10 mm, and the probe rod (2) has a diameter of 15 mm. The rod (1) is symmetrically installed on the head of the probe rod (2), the distance between the central axis of the coupler rod (1) and the central axis of the probe rod (2) is 4 mm, and the corundum tube (3) is bonded by heat insulation The material is fixed in the wire rod (1) and the probe rod (2), the thermocouple wire (5) is passed through the corundum tube (3) and fixed, the exposed wire part is straightened, and the thermocoup...

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Abstract

The invention belongs to the technical field, and discloses a quick-response thermocouple probe. The quick-response thermocouple probe is formed by thermocouple wire poles, a probe pole, a corundum pipe, a thermocouple measuring contact and thermocouple wires, wherein the thermocouple wire poles support the thermocouple wires; the thermocouple wires are straightened through the thermocouple wire poles, and are horizontal-line shaped; the thermocouple measuring contact is located at the middle part; and facing toward the air-flow direction, the exposed thermocouple wires and the thermocouple wire poles are in II-shaped, and the shape can guarantee that the thermocouple fully contacts the flow field and is convenient for exchanging the thermocouple wires. The quick-response thermocouple probe is generally suitable for K-type, T-type and J-type of thermocouples. Compared with a traditional thermocouple probe, the thermocouple probe can select a thermocouple with very small thermal inertia; the thermocouple wires can be fixed in the flow field to be detected through the thermocouple wire poles; the thermocouple probe can measure the high frequency pulsation air-flow temperature; and the thermocouple wires can maintain intensity and rigidity under the high speed air-flow impact, and are not easy to be bent and deformed.

Description

technical field [0001] The invention belongs to the technical field of aero-engine temperature testing, in particular to a small-inertia thermocouple probe. Background technique [0002] In the aeroengine test, due to the high-frequency fluctuation of the flow field temperature, it is necessary to use a small inertial thermocouple to measure the temperature of the airflow. Currently commonly used thermocouples are difficult to place alone in the flow field, and it is difficult to ensure strength and rigidity. Thermocouple wires are prone to bending, deformation, and damage under the impact of high-speed, high-temperature, high-pressure, and high-pulsation airflow. The existing armored thermocouple has a low frequency response and cannot meet the needs of dynamic temperature measurement of the flow field in the aero-engine. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a small inertial thermocouple probe, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/06G01K13/02G01K13/024
CPCG01K7/06G01K13/02G01K13/024
Inventor 马宏伟郑春泰
Owner BEIHANG UNIV
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