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A combined dynamic probe for measuring the distorted flow field at the turbine inlet

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: 2020-07-03
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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  • A combined dynamic probe for measuring the distorted flow field at the turbine inlet

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Embodiment Construction

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

[0016] Such as figure 1 As shown, the present invention includes a probe head, a support rod (1), and the probe head includes a temperature sensor mounting hole (2), a pressure hole (3), a hot wire bracket (4), a hot wire (5), and a hot wire (5). ) Is welded to the hot wire support (4), the hot wire lead (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 (7) It is led out through the internal channel of the support rod (1), the temperature sensor sensing part is installed at the position of the temperature sensor installation hole (2), and the lead (8) is led out through the internal channel of the support rod (1).

[0017] The probe support rod (1) is a cylindrical hollow structure, and the diameter of the support rod can be 4 mm.

[0018] The hot wire...

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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 an impeller. The invention can measure the total temperature, total pressure and speed parameters of the fluid at the same time, compared to the traditional measurement The single-parameter probe not only reduces the probe's influence on the flow field, but also has a higher frequency response, which can meet the test requirements of the distorted flow field at the inlet of the turbomachine. Background technique [0002] With the continuous improvement of the performance of the impeller, its working conditions become more complicated. Serious inlet pressure distortion or even temperature distortion will occur at the inlet of the impeller, which will directly affect the unevenness of the internal pressure field and temperature field of the impeller. Affect its working stability...

Claims

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Application Information

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