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Flow collection type comb-shaped total pressure probe

A probe and current collection technology, applied in the direction of measuring fluid pressure, measuring devices, instruments, etc., can solve problems such as changes, insufficient measurement of total pressure, and uncertain direction, and achieve lower requirements, lower installation accuracy, and higher insensitivity Effect

Inactive Publication Date: 2015-01-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some complex flow field environments, taking the flow between the blade rows of the axial flow compressor in the aeroengine as an example, the direction of the air flow between the blade rows of

Method used

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  • Flow collection type comb-shaped total pressure probe
  • Flow collection type comb-shaped total pressure probe
  • Flow collection type comb-shaped total pressure probe

Examples

Experimental program
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Embodiment Construction

[0013] to combine figure 2 The structure of the total pressure measuring probe of the present invention will be described. The probe is composed of horn-shaped collector cap 5, probe bracket 1 with front drainage hole 2-1 and rear drainage hole 2-2, and L-shaped pressure tube 4. It is characterized in that:

[0014] The probe bracket 1 is used as the main body of the probe to fix the trumpet-shaped collector cap 5 and the L-shaped pressure tube 4. The probe bracket 1 is a cylindrical stainless steel tube with one end closed and the other open. To draw the L-shaped pressure pipe 4. The L-shaped pressure tube 4 is a stainless steel tube with a diameter of about 1 mm. After the pressure tube is led out, the open end of the bracket is filled and closed with solder.

[0015] The above-mentioned probe holder 1 is a cylindrical tube with one end closed and the other end open; one side of the probe holder (1) is provided with a row of front drainage holes 2-1, and the position and...

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Abstract

The invention provides a flow collection type comb-shaped total pressure probe, and belongs to the field of flow field measurement. The flow collection type comb-shaped total pressure probe comprises a tubular probe support (1), L-shaped pressure bearing pipes (4) and horn-shaped flow collection covers (5). A row of front drainage holes (2-1) are formed in one side of the probe support (1). Rear drainage holes (2-2) and process holes (3) are formed in the other side of the probe support (1). The horn-shaped flow collection covers (5) are arranged on the front drainage holes (2-1). One end of each L-shaped pressure bearing pipe (4) extends to the corresponding horn-shaped flow collection cover (5), and the other end of each L-shaped pressure bearing pipe (4) extends out of the opening end of the probe support (1). The process holes (3) are filled with packing (6). On one hand, the packing (6) fixes the pressure-bearing pipes (4), and on the other hand, the packing (6) blocks air flow collected by the different horn-shaped flow collection covers (5) so that the air flow can not circulate in the horn-shaped flow collection covers (5). The flow collection type comb-shaped total pressure probe can be suitable for multi-point total pressure measurement in complex flow field environments.

Description

technical field [0001] The invention relates to a design method of a current-collecting comb-shaped total pressure probe, which belongs to the field of flow field measurement. Background technique [0002] The measurement of flow field parameters is one of the main problems faced by fluid machinery designers. The accurate acquisition of flow field parameters can provide reliable data support for designers and provide the necessary guarantee for verifying design methods. The measurement of fluid total pressure in flow field is an important aspect of flow field parameter measurement. For the measurement of the total fluid pressure in the flow field, conventional needle comb probes (such as figure 1 Shown) or straight pipe probes, etc. Although these types of total pressure probes are simple to make, they have relatively large limitations. Because, in order to accurately feel the total pressure of the fluid, the pressure tube of the probe must be consistent with the directio...

Claims

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Application Information

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IPC IPC(8): G01L11/00
Inventor 王志强阮立群胡骏高翔
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS