Manufacturing process of long-life nitrogen generator

Abstract

The invention discloses a manufacturing process of a long-life nitrogen generator. The manufacturing process comprises the following steps: taking materials, processing end sockets, cutting, winding of film, tapping, mounting a shell, pouring glue, and mounting a sealing cover and a tail cover to obtain the long-life nitrogen generator. The manufacturing process has the advantages of improving theseparation efficiency, prolonging the service life and the like.

Description

technical field [0001] The invention belongs to the technical field of nitrogen generator manufacturing, and in particular relates to a manufacturing process of a high-life nitrogen generator. Background technique [0002] The nitrogen generator is a device that uses a bundle composed of multiple hollow fiber membranes to separate oxygen and nitrogen in the air. The side wall of the hollow fiber bundle can pass through oxygen molecules, but nitrogen molecules cannot pass through, so it can separate oxygen and nitrogen in the air. Nitrogen separation. Existing nitrogen generators are mainly composed of cores made of fiber bundles 1, support rods 2, heads 3 and shells, etc., such as figure 1 The nitrogen generator used on the shown aircraft mainly supports the core body through a support rod 2 made of polyimide inside the core body. The area of ​​the end surface of the head 3 is larger than the area of ​​the end surface of the support rod 2, so when the core is ventilated, t...

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Problems solved by technology

Existing nitrogen generators are mainly composed of cores made of fiber bundles 1, support rods 2, heads 3 and shells, etc., such as figure 1 The nitrogen generator used on the shown aircraft mainly supports the core body through a support rod 2 made of polyimide inside the core body. The area of ​​the end surface of the head 3 is larger than the area of ​​the end surface of the support rod 2, so when the core is ventilated, the contact position between the support rod 2 and the head 3 is easily damaged and cracks occur, such as figure 1 As shown, if there is a crack in the core inlet head 3, the crack can be repaired at this time, but if there is a crack in the core outlet head 3, it can only be scrapped. The service life of the nitrogen generator produced by this structure is only About 7500H, the service life is short

[0003] At present, the head on the core body of the foreign original factory is generally made by centrifugal glue filling, such as figure 2 As shown, during manufacture, the fiber bundle 1 is bundled into a cylinder to form a core and placed horizontally, and then the middle of the core is used as the axis to make a circular motion, and epoxy resin glue is poured into the glue inlet 4 to start the centrifugation Machine, so that the epoxy resin glue maintains centrifugal motion, and then wait for the epoxy resin glue to solidify, such as image 3 As shown, after the epoxy resin is solidified, the core body is taken out. At this time, the head formed by the epoxy resin glue solidified at both ends of the core body will have an arc-shaped concave edge. At this time, the core body can separate oxygen fibers. Reduced fiber filaments in the bundle, reducing the performance of the core when used in a nitrogen generator

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