Large-caliber long-span compensator for conveying pipe

Abstract

The invention relates to a large-caliber long-span compensator for a conveying pipe, comprising symmetrically-distributed tension rod limiting devices on corrugated pipes at two ends of the conveying pipe, wherein each tension rod limiting device comprises a fixture block, a cushion block and a tension rod; each fixture block is fixed by matching with a bump at one side of the corrugated pipe with a groove, and the two symmetrically-distributed fixture blocks are clamped on the conveying pipe and fixed by first light holes; the cushion blocks are of an approximate triangular structure, three corners are provided with one light hole respectively and two fourth light holes and two bolt holes on a butt flange at the other side of the corrugated pipe are fixed correspondingly; and two ends ofeach tension rod pass through second light holes of the fixture blocks respectively, and third light holes on the cushion blocks are fixed with the fixture blocks and the cushion blocks by washers with a conical surface, spherical washers, spring washers and nuts. By adding the tension rod structure, the compensator realizes the compensation of assembly displacement, avoids the fatigue failure ofthe corrugated pipes at an engine end on the conveying pipe in the flying process, simplifies the structure design, and strengthens the reliability.

Description

technical field [0001] The invention belongs to the technical field of launch vehicles, and relates to a large-diameter compensator for a delivery pipeline of a launch vehicle, in particular to a compensator for a large-diameter and long-span delivery pipeline of a launch vehicle. Background technique [0002] After the length of the delivery tube of the manned space launch vehicle is increased, the total length is about 5.8m, and the mass increases. There is a bellows at the front and back of this section of the delivery tube, and there is no fixed support in the middle. The fatigue performance of the bellows at the lower end decreases under random vibration conditions. Fatigue damage may occur. The bellows must meet the axial and radial compensation requirements during assembly, and the frame deformation caused by the engine operation must also be compensated during flight. If the bellows is redesigned, a certain development cycle is required and test verification is requir...

AI Technical Summary

Problems solved by technology

[0002] After the length of the delivery tube of the manned space launch vehicle is increased, the total length is about 5.8m, and the mass increases. There is a bellows at the front and back of this section of the delivery tube, and there is no fixed support in the middle. The fatigue performance of the bellows at the lower end decreases under random vibration conditions. Fatigue damage may occur. The bellows must meet the axial and radial compensation requirements during assembly, and the frame deformation caused by the engine operation must also be compensated during flight. If the bellows is redesigned, a certain development cycle is required and test verification is required. Assessment; if it is proposed to increase the fixed structure of the conveying pipe to the existing tank structure, one is that the design of the tank is difficult, and the other is that the development cycle is long, and test verification is required

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