2results about How to "Reduce Pollution Potential" patented technology

The utility model relates to transformer monitoring technical field discloses a kind of oil extraction devices outside transformer oil pit, including oil pipe, fireproof groove box, special oil extraction port and oil sample valve box;The one end of oil pipe is connected with the oil outlet of transformer body, and the other end of oil pipe is connected to inside oil sample valve box;Special oil extraction port is provided outside oil sample valve box, and special oil extraction port is wall structure, and the wall structure is arranged at the fire wall outside transformer;The fireproof groove box is square tubular, and is surrounded along the full length of oil pipe arrangement.This utility model solves the security risk and efficiency bottleneck of traditional sampling mode synchronously by space isolation and dynamic protection, and provides whole-process protection for oil sample fidelity;It greatly improves the safety protection level of operating personnel and the safety of oil extraction equipment, simultaneously improves the on-site operation emergency disposal capability, reduces the personal and material losses caused by accidents, and has high economic and social benefits.

The application provides a double-insert buckle type packaging box which is formed by die cutting and folding an integrated paperboard to form a square box body. The box bottom plate of the box body is connected with a front side plate, a rear side plate, a left side plate and a right side plate around the periphery, respectively; the rear side plate is sequentially connected with a first cover plate and a first insert plate; the front side plate is sequentially connected with a second cover plate and a second insert plate; the first insert plate is provided with a tongue window opening and an insert tongue; the second insert plate is provided with a strip-shaped insert hole matched with the insert tongue; the left and right side plates are respectively connected with inner folding flaps, and the inner folding flaps are provided with side flap grooves for inserting the insert plates when the cover plates are closed. The application is more suitable for the field of medical packaging and can avoid the bonding process in the packaging assembly process and reduce the pollution risk.