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Combined dynamic probe measuring turbine machine inlet distortion flow field

A distorted flow and impeller technology, which is applied in the field of combined dynamic probes for measuring the distorted flow field at the inlet of the impeller, and can solve the problem of small test technology affected by the measured flow field

Active Publication Date: 2017-07-11
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is: in the current research on the inlet distortion of the turbine, there is a lack of testing technology that can simultaneously obtain flow field turbulence, pressure and temperature information, and has little influence on the measured flow field

Method used

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  • Combined dynamic probe measuring turbine machine inlet distortion flow field

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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] Such as figure 1 Shown, the present invention comprises probe head, support rod (1), and probe head comprises temperature sensor installation hole (2), pressure hole (3), heating wire support (4), heating wire (5), heating wire (5) ) is welded on the hot wire bracket (4), the hot wire 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 (3), and its lead wire (7) Lead out through the internal passage of the support rod (1), the sensing part of the temperature sensor is installed at the position of the temperature sensor installation hole (2), and its lead wire (8) is drawn out through the internal passage of the support rod (1).

[0017] The probe support rod (1) is a cylindrical hollow structure, and the diameter of the support rod can ...

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Abstract

The invention belongs to the pressure, temperature and speed testing technical field, and discloses a combined dynamic probe measuring the turbine machine inlet distortion flow field; the probe comprises a probe head portion and a pole (1); the probe head portion comprises a temperature sensor mount hole (2), a pressure hole (3), a hot line support (4) and a hot line (5) welded on the hot line support; a pressure sensor is arranged in a position close to the pressure hole (3) in the probe head portion; the pressure hole (3) axis is vertical to the hot line (5); a lead wire (7) is led out through a pole inner channel; the temperature sensor mount hole (2) and the pressure hole (3) are in a same circumferential position and equal in sizes; compared with a conventional pressure probe and a temperature probe, the combined dynamic probe can simultaneously measure the inflow total pressure and temperature, speed, direction and speed pulsation dynamic parameters through calibrations, and is suitable for measuring the turbine machine inlet distortion flow field total temperature, total pressure and turbulence.

Description

technical field [0001] The invention belongs to the technical field of pressure, speed and temperature testing, and relates to a combined dynamic probe for measuring the distorted flow field at the inlet of a turbine. The single-parameter probe not only reduces the influence of the probe on the flow field, but also has a high frequency response, which can meet the test requirements of the turbine inlet distortion flow field. Background technique [0002] With the continuous improvement of the performance of the turbine, its working conditions are more complex, and serious inlet pressure distortion and even temperature distortion will occur at the inlet of the turbine, which will directly affect the inhomogeneity of the pressure field and temperature field inside the turbine, thus It affects its working stability, and even the working stability of the whole system. [0003] The measurement of total temperature, total pressure and turbulence is an important means to study int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 马宏伟王昱珅
Owner BEIHANG UNIV
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