High-temperature gas water jacket anti-scouring expansion exhaust device for exhaust diffuser

Abstract

The embodiment of the invention discloses a high-temperature gas water jacket anti-scouring exhaust and expansion device for an exhaust diffuser, which comprises a plurality of sets of water jacket anti-scouring assemblies connected in a circumferential surrounding manner to form a barrel-shaped anti-scouring exhaust and expansion structure; in each set of water jacket anti-scouring assembly, the connecting pipe and the collecting pipe secondary distribution pipe box are arranged to be in an arc shape with a preset radian and are used for forming a pipeline and a cavity which are communicated with each other; in each set of water jacket anti-scouring assembly, the connecting pipe is communicated with the collecting pipe secondary distribution pipe box through a heat exchange part, so that a medium flow path from the inlet collecting pipe to the collecting pipe secondary distribution pipe box through the heat exchange part is formed; gaps of all the heat exchange pipelines in the heat exchange component are used for absorbing the circumferential thermal expansion amount, and the sliding support is used for absorbing the axial thermal expansion amount. According to the technical scheme provided by the embodiment of the invention, the structural loss of the exhaust diffuser caused by high-temperature fuel gas subjected to vector scouring can be prevented, and the problem of embrittlement caused by temperature difference stress in an exhaust diffuser material is solved.

Description

technical field [0001] The invention relates to but not limited to the technical field of anti-scouring structure of vector scouring, in particular to a high-temperature gas water jacket anti-scouring exhaust diffuser device for exhaust diffuser. Background technique [0002] High-temperature gas is injected into the exhaust diffuser from the tail of the engine. When the engine is in the vector state, a certain point of the exhaust diffuser will locally bear a temperature difference of several hundred degrees higher than other areas, so that the material of the exhaust diffuser The internal temperature difference stress is prone to occur inside, resulting in brittle cracking of the material. [0003] In view of the above, in order to prevent the dangerous problems caused by the embrittlement of the material of the above-mentioned exhaust diffuser, it is necessary to add a device at the inlet end of the exhaust diffuser to withstand the high-temperature gas of this vector mot...

AI Technical Summary

Problems solved by technology

[0002] High-temperature gas is injected into the exhaust diffuser from the tail of the engine. When the engine is in the vector state, a certain point of the exhaust diffuser will locally bear a temperature difference of several hundred degrees higher than other areas, so that the material of the exhaust diffuser The internal temperature difference stress is easy to occur inside, which leads to brittle cracking of the material

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