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A Combined Dynamic Probe for Measuring Fluid Total Pressure and Velocity with Temperature Correction

A probe and fluid technology, which is applied in the field of combined dynamic probes with temperature correction to measure the total pressure and velocity of fluids, and can solve the problems of small influence of the measured flow field.

Active Publication Date: 2020-07-03
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is: in view of the lack of current scientific research and engineering application testing technology that can simultaneously obtain flow field velocity and pressure information, has little influence on the measured flow field, and can perform temperature correction on hot-line measurement results

Method used

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  • A Combined Dynamic Probe for Measuring Fluid Total Pressure and Velocity with Temperature Correction

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] like figure 1 Shown, the present invention comprises probe head, support rod (1), and probe head comprises hot wire (5), hot wire bracket (4), pressure hole (2) and temperature sensor (3); Hot wire (5) welding On the heating wire bracket (4), its lead wire (6) is led out from the inner channel of the probe support rod (1); the pressure sensor is installed in the probe head near the pressure hole (2), and the pressure sensor lead wire (8) passes through The internal channel of the support rod (1) leads out; the temperature sensor (3) is installed on the center position of the installation surface of the heating wire support, and the lead wire (7) of the temperature sensor is drawn out through the internal channel of the support rod (1).

[0017] In the embodiment of the present invention, the probe support rod (1) is a cylindrical holl...

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Abstract

The invention belongs to the technical field of pressure and speed test and discloses a combined dynamic probe which has a temperature correction function and can measure total pressure and speed of a fluid. The probe contains a probe head and a strut (1), wherein the probe head contains a hot wire (5), a hot wire support (4), a pressure hole (2) and a temperature sensor (3); the hot wire (5) is welded on the hot wire support (4); the pressure sensor is mounted at a position, close to the pressure hole (2), inside the probe head, and axis of a pressure sensor mounting hole (2) is vertical to the hot wire (5). A mounting hole for the temperature sensor (3) is formed at the central position of a mounting surface of the hot wire support (4). Compared with an existing pressure probe and an existing temperature probe, after being calibrated, the combined dynamic probe can measure dynamic parameters such as turbulivity and total pressure of an incoming flow at the same time, also can correct influence of temperature on a hot wire measuring result and is applicable to measurement of dynamic total pressure and turbulivity of a turbine inlet.

Description

technical field [0001] The invention belongs to the technical field of pressure and speed testing, and relates to a combined dynamic probe with temperature correction for measuring the total pressure and speed of a fluid. The invention can measure the total pressure and speed parameters of the fluid at the same time. The probe not only reduces the influence of the probe on the flow field, but also performs temperature correction on the measurement results of the hot wire, thereby improving the accuracy of the measurement results. Background technique [0002] The measurement of total pressure and turbulence is an important part of the measurement of turbine inlet parameters. The flow field at the inlet of the turbine can be regarded as a one-dimensional flow field under the condition of uniform air intake, so the single-hole needle is often used to measure the total pressure at the inlet of the turbine, and the hot wire probe is often used in the measurement of turbulence du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 马宏伟赵连鹏
Owner BEIHANG UNIV
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