A sealed and noise-reducing structure that can be repaired quickly in orbit

Abstract

The invention relates to a sealing noise reduction structure capable of being rapidly maintained on an orbit. The sealing noise reduction structure comprises a box body, a top cover and a sealing structure. The box body is a cube with an opening in the top wall, and the interior of the box body is used for containing equipment to be subjected to sound insulation and noise reduction. A counter groove is formed in the end face, facing the top wall, of the side wall of the box body. The sealing structure is an elastic component with a U-shaped cross section. The sealing structure is matched withthe counter groove in the side wall of the box body, and the sealing structure is placed in the counter groove in the side wall of the box body. The U-shaped opening of the sealing structure faces theside, with high inside and outside pressure, of the box body. The top cover is fixedly connected with the counter groove, with the sealing structure arranged, in the box body through a fastener. According to the sealing noise reduction structure, the noise of the equipment inside the box body can be reduced to 60 dB, and the sealing air leakage amount is not more than 1L / min. The sealing noise reduction structure has the functions of being good in bearing performance, good in sealing performance, capable of reducing noise, rapid in maintenance and convenient to disassemble and assemble, and normal work of astronauts on the rail can be guaranteed.

Description

technical field [0001] The invention relates to a sealed and noise-reducing structure that can be quickly maintained on the track, and belongs to the technical field of environment control and life support. Background technique [0002] The sealed and noise-reducing box is an important part of the ventilation pipeline in the environmental control and life support system of the space station. Its main function is to stabilize the airflow inside the ventilation pipeline. It needs to have good sealing performance and reduce the generation of equipment installed inside the box. In addition, the box also needs to have the function of quick disassembly and assembly on orbit, which occupies an important position in the field of manned spaceflight. At the same time, it also has a wide range of military and civilian fields that require both sealing and noise reduction application prospects. [0003] With the development of controlled and renewable environment control and life suppor...

AI Technical Summary

Problems solved by technology

[0004] The technical problem of the present invention is: aiming at the problem that the existing technology cannot simultaneously satisfy sound absorption, noise reduction, and rapid maintenance, a sealed noise reduction device is proposed, and the U-shaped sealing structure and sound-absorbing material are optimized to reduce the complexity of the device. Improves the disassembly and assembly of the device, and can provide support for the box design with the function of sealing and noise reduction

Images