Temperature interference-free sensing fiber monitoring apparatus and application method therefor

A temperature interference-free sensing fiber monitoring apparatus, comprising a vacuum cavity module, a composite material flat groove module and a port fiber-fixing module, wherein the vacuum cavity module is connected with the composite material flat groove module, the port fiber-fixing module is connected with the vacuum cavity module via a foursquare plug body, a sensing fiber orderly passes through the composite material flat groove module, the vacuum cavity module and the port fiber-fixing module, the vacuum cavity module, the composite material flat groove module and the port fiber-fixing module are all fixed in an installation tube, and the installation tube is located on a temperature interference-free base platform;

• the composite material flat groove module comprises a cylinder made of special composite material, a center of the cylinder is provided with a through hole for the sensing fiber to pass through, a top of the cylinder is provided with a pressing cover, and a center of the pressing cover is provided with a concavoconcave glue-injection groove;
• the vacuum cavity module comprises a vacuum cavity and an elastic fastening outer ring, one end of the vacuum cavity is connected with a cover plate, the cover plate is fixed in an installation tube through glue, the other end of the vacuum cavity is connected with the elastic fastening outer ring, the center of the elastic fastening outer ring is provided with a circular hole, the circular hole is internally provided with a hard fiber protection outer layer, the bottom end of the elastic fastening outer ring is provided with a conical hole, the conical hole is internally installed with the foursquare plug body, the foursquare plug body is extended with a cylindrical boss, the cylindrical boss is located in the hard fiber protection outer layer, the sensing fiber passes through the cylindrical boss, the vacuum cavity is connected with a vacuum-pumping apparatus outside the installation tube, and the sensing fiber passes through the cover plate, the vacuum cavity and the foursquare plug body in sequence;
• and
• the port fiber-fixing module comprises a left arc-shaped pressing body and a right arc-shaped pressing body, one end of the left arc-shaped pressing body and one end of the right arc-shaped pressing body are respectively hinged with the bottom end of the elastic fastening outer ring, the other end of the left arc-shaped pressing body and the other end of the right arc-shaped pressing body are respectively extended with a boss, the boss is provided with a connecting apparatus, the arc-shaped surfaces of the left arc-shaped pressing body and the right arc-shaped pressing body are set oppositely, the left arc-shaped pressing body and the right arc-shaped pressing body form an arc-shaped pressing cavity, and the sensing fiber passes through the arc-shaped pressing cavity.