A high-efficiency and precise repair method for ring pipes with complex structures of engines

Abstract

The invention provides an efficient and precise repair method for ring pipes with complex structures of the engine. A series of tooling is used to simultaneously position the tee, four and five links on the two ring pipes; the tooling base is installed on the cabin body through bolts, three The joints of the through, cross, or bottom bracket pass through the through hole on the tooling base, and connect a casing nut with a guide section; when loading and unloading the tee, cross, bottom bracket, and titanium tube, only the casing nut needs to be removed. The position of the tooling base on the cabin is always the same, ensuring that the position of the tee, cross or bottom bracket is consistent every time the ring pipe is disassembled. The invention can reduce the difficulty of filing, positioning and repairing of the titanium alloy ring pipe assembly with complex structure, shorten the production cycle and ensure the positioning accuracy.

Description

technical field [0001] The invention relates to a ring pipe repairing method, which belongs to the technical field of assembling pipeline connectors with complex structures. Background technique [0002] The main pipeline for conveying propellant on the attitude control engine is usually an annular conduit assembly welded by titanium alloy general parts and titanium tubes. The shape and structure of the pipeline of the ring pipe assembly is complex. After the ring pipe is assembled, the gap with the surrounding components is very small, and the assembly position accuracy of each channel is high. There is no compensation allowance for the structure and span of the ring pipe, which requires that the ring pipe must be repaired and welded once to pass, otherwise sawing and repairing will cause interference in the assembly of the ring pipe. [0003] The main pipeline of a certain attitude control engine is 2 pieces of inner and outer parallel double-row ring pipes, each of which...

AI Technical Summary

Problems solved by technology

[0004] Due to the complex structure and high dimensional accuracy, the ring pipe file repair, positioning, and assembly process are difficult, mainly reflected in: 1) The ring pipe components have many spatial positions and dimensions, and the positioning accuracy requirements are high, and the clearance requirements, verticality requirements, and angle requirements must be met. Requirements and parallelism requirements; 2) The six titanium tubes on each ring tube need to be sampled, bent, filed and welded section by section, and it needs to be disassembled and assembled 6 times to complete the welding of the whole tube. The position is not fixed, which makes it difficult to guarantee the repair accuracy of the ring pipe, which affects the assembly consistency of the engine; 3) The processing cycle of the ring pipe is long and the production efficiency is low

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