A method for repairing breakpoints of high-pressure inflatable sealing shrouds in high-speed wind tunnels
An inflatable, sealed, high-speed wind tunnel technology, applied in aerodynamic tests, testing of machine/structural components, instruments, etc., can solve the problems of long cycle time, large workload of dismantling and reassembly, etc., to solve the problem of breakpoint repair , Simple effect of breakpoint repair method
Active Publication Date: 2020-11-27
INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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Problems solved by technology
[0002] The high-pressure inflatable sealing shroud of the high-speed wind tunnel is installed on the rear flange end face of the contraction section of the high-speed wind tunnel. It is necessary to develop a high-pressure inflatable sealing shroud breakpoint repair method used in the high-speed wind tunnel site
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Embodiment 1
[0025] The breakpoint repairing method of the high-speed wind tunnel high-pressure inflatable sealing shroud of the present invention comprises the following steps:
[0026] a. Processing such as Figure 6 The ventilation skeleton 6 shown is a dumbbell-shaped tubular body with a cavity in the center. Such as Figure 4 The high-pressure inflatable sealing shroud shown is filled with air and obtained as follows: Figure 5 The cross-sectional shape of the central cavity of the high-pressure inflatable sealing belt is shown, and the cross-sectional shape of the central cavity is the cross-sectional shape of the ventilating skeleton 6, and the cross-sectional size of the middle section of the ventilating skeleton 6 is determined according to the characteristic size ratio of 1:0.8. The characteristic size ratio determines the cross-sectional size of the two ends of the ventilation frame 6; the ventilation frame 6 is processed as a whole on the machine tool;
[0027] b. Cutting an...
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The invention discloses a breakpoint repair method for a high-speed wind tunnel high-pressure inflation sealing shroud band. The repair method comprises the following steps that a, a ventilation framework is machined; b, breakpoint end surfaces of the high-pressure inflation sealing shroud band are cut and polished, outer adhesive layers, braid layers and inner adhesive layers of the two breakpoint end surfaces are peeled off; c, a sealant is smeared on the middle section of the ventilation framework; d, the inner adhesive layers, the braid layers and the inner adhesive layers peeled from thetwo breakpoint end surfaces are threaded from the two ends of the ventilation framework and pulled to the center of the ventilation framework to be pasted; e, the braid layers peeled from the two breakpoint end surfaces are tightly tied onto the ventilation framework through mild steel wires, and the mild steel wires are coated with the sealant to form a bundling layer; and f, the outer adhesive layers peeled from the two breakpoint end surfaces are arranged on the bundling layer in a sleeving mode, and the surfaces of the outer adhesive layers are coated with the sealant till the height of the sealant is the same with that of the high-pressure inflation sealing shroud band at the end of the ventilation framework. The repair method is simple, efficient and practical, and the problem of breakpoint repair of the high-pressure inflation sealing shroud band can be quickly solved.
Description
technical field [0001] The invention belongs to the technical field of high-speed wind tunnel tests, and in particular relates to a method for repairing breakpoints of high-pressure inflatable sealing shrouds in high-speed wind tunnels. Background technique [0002] The high-pressure inflatable sealing shroud of the high-speed wind tunnel is installed on the rear flange end face of the contraction section of the high-speed wind tunnel. It is necessary to develop a high-pressure inflatable sealing shroud breakpoint repair method used in the high-speed wind tunnel site. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for repairing breakpoints of the high-pressure inflatable sealing shroud in a high-speed wind tunnel. [0004] The breakpoint repairing method of the high-speed wind tunnel high-pressure inflatable sealing shroud of the present invention comprises the following steps: [0005] a. Process the...
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IPC IPC(8): F16L33/01F16L33/30F16L33/34G01M9/04B29C65/48
CPCB29C65/48F16L33/01F16L33/30F16L33/34G01M9/04
Inventor 马东平李多唐淋伟杨晓峰赵宽鲍禄强
Owner INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT