Introduction to breakpoint repairing method of high-pressure seal inflatable

Characteristics of breakpoint repair method for high-pressure seal pneumatic in high-speed wind tunnel

Breakpoint repair method of high-pressure inflatable sealing shroud in high-speed wind tunnel: the ventilation skeleton is inserted into the breakpoint, and both ends of the shroud are bundled on the ventilation skeleton, and then repaired by applying sealant.

The method of repairing the breakpoint of the high-pressure inflatable sealing shroud in a high-speed wind tunnel is simple, efficient and practical, and can quickly solve the problem of repairing the breakpoint of the high-pressure inflatable sealing shroud.

Breakpoint repair method and process of high-pressure sealing element in high-speed wind tunnel

The method for repairing breakpoints of high-pressure inflatable sealing shrouds in high-speed wind tunnels includes the following steps:

a. Process the ventilation skeleton, the ventilation skeleton is a dumbbell-shaped tubular body with a cavity in the center, and the cross-sectional shape of the ventilation skeleton is determined according to the cross-sectional shape of the central cavity after the high-pressure inflatable sealing shroud is filled with air, according to the characteristic size of 1:0.8 The proportions determine the cross-sectional size of the middle section of the ventilation skeleton, and determine the cross-sectional dimensions of the ends of the ventilation skeleton according to the characteristic size ratio of 1:1; the ventilation skeleton is integrally processed on the machine tool.

b. Cut and polish the breakpoint end face of the high-pressure inflatable sealing shroud, so that the incision of the breakpoint end face of the high-pressure inflatable sealing shroud is neat, and the end faces of the two breakpoints can be connected neatly; peel off the outer rubber layer and braiding of the end faces of the two breakpoints respectively. layer and inner layer.

c. Apply sealant to the middle section of the vent frame.

d. Insert the inner rubber layer on the end face of one break point that is peeled off together with the braided layer and the outer rubber layer from the front end of the ventilation frame, and stretch it to the center of the ventilation frame to paste; The layer together with the braided layer and the outer rubber layer is sleeved from the rear end of the ventilation frame, stretched to the center of the ventilation frame and pasted; after pasting, the inner rubber layers on the end faces of the two breakpoints are butted neatly.

e. Tightly bind the braided layer stripped from the end faces of the two breakpoints to the ventilation frame with soft steel wire. After bundling, the braided layers of the end faces of the two breakpoints are butted neatly, and then coat the steel wire with sealant to form bundling layer.

f. Put the outer rubber layer peeled off the end faces of the two breakpoints on the bundling layer, the outer rubber layers of the two breakpoint end faces are butted neatly, and the surface of the outer rubber layer is coated with sealant until the height of the sealant is the same as the ventilation frame. The high pressure gas-filled seal shrouds at the ends are of the same height.