A mobile plate type total pressure distortion generator with low unnecessary pulsation and its test method
A distortion generator and plug-in technology, which is applied in the field of aero-engines, can solve the problems of high turbulent flow, achieve the effects of reducing high-intensity turbulent flow, continuously adjustable distortion intensity, and simple device structure
Active Publication Date: 2021-10-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the airflow flows through the position of the movable plate-type distortion generator, it will enter the gap and the cavity formed by the sealed box, resulting in pressure pulsation and high turbulent airflow, which makes the turbulent flow of the inlet section of the test piece too high
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] The present invention will be further described below in conjunction with the accompanying drawings.
[0026] Such as figure 1 As shown, the low unnecessary pulsation mobile plate-type total pressure distortion generator disclosed by the present invention includes four parts: straight pipe I section 1, distortion section 2, insert plate 3 and straight pipe II section 4. The specific structure of straight pipeline I section 1 and straight pipeline II section 4 is as follows figure 2 with Figure 4 As shown, it consists of a flow channel 5 and a circular connecting plate 6. The geometric shape of the cross-section of the flow channel is circular, and the geometric shape and radius are consistent with the main flow channel; the straight pipe section is connected with the distortion section 2 by bolts, and there are bolt holes 7 on the circular connecting plate 6 for installing bolts.
[0027] The specific structure of the distortion section 2 is as follows image 3 As...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a mobile plate type total pressure distortion generator with low unnecessary pulsation and a test method. The distortion generator includes two mutually matched distortion sections; the distortion sections are respectively provided with mutually matched rectangular connections plate; one of the distortion sections is provided with a circular support plate and a support plate adjustment driver along the runner mouth; the circular support plate includes a fixed arc support plate and several segments of retractable arc support plates; the support plate adjustment The driver includes a knob and a volute spring; it is adjusted according to the depth of the inserting plate into the flow channel, which retains the ability to continuously adjust the distortion intensity of the flow field; the circular support plate makes the inserting plate type distortion generator and the wall of the flow channel cylinder better The fit prevents the airflow from entering the gap and the cavity formed by the sealed box when the airflow flows through the position of the movable plate-type distortion generator, reduces the pressure pulsation, and reduces the turbulence of the airflow at the inlet section of the test piece.
Description
technical field [0001] The invention relates to the technical field of aero-engines, and mainly relates to a mobile plate-type total pressure distortion generator with low unnecessary pulsation and a test method. Background technique [0002] Aviation aircraft inevitably encounter some aerodynamic stability problems during flight. A large number of studies have shown that intake distortion is one of the key factors that induce flow instability inside the compressor, and it occurs most frequently. [0003] Drawing on the experience of developing Russian aero-engines, the technical route of plug-in imported total pressure distortion generator plus comprehensive distortion index is generally used in my country to evaluate the aerodynamic stability of aero-engines. [0004] The removable plate-type inlet total pressure distortion generator is composed of a rectangular plate, a rectangular sealing box with a round hole, a hydraulic cylinder, a displacement sensor and an auxiliary...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/14G01M15/02
CPCG01M15/02G01M15/14
Inventor 李传鹏宣彬胡骏阮立群朱春雨
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS