2 results about "Elliptical cylinder" patented technology

The application discloses a local elliptic cylinder magnet magnetic field calculation method and system based on an equivalent magnetic charge method, establishes a local elliptic cylinder magnet magnetic field mathematical model, sets parameters of the local elliptic cylinder magnet, brings the parameters of the local elliptic cylinder magnet into the local elliptic cylinder magnet magnetic field mathematical model, solves the model, and obtains the magnetic field of the local elliptic cylinder magnet. The application can accurately and quickly calculate the space magnetic field of the local elliptic cylinder magnet magnetized in any direction in the xoy plane, is helpful for subsequent accurate solution of the magnetic field gradient, control of the space magnetic force, and analysis of the dynamic movement of the magnetic beads.

The utility model relates to the technical field of blasting equipment provides a kind of energy-gathering explosive tube, comprising: elliptical cylinder pipe body, two energy-gathering grooves are structured on the outer circumferential wall of elliptical cylinder pipe body, energy-gathering groove extends along the length direction of elliptical cylinder pipe body, one of energy-gathering groove is located at the long axis of elliptical cylinder pipe body one end, another energy-gathering groove is located at the long axis of elliptical cylinder pipe body other end.The energy-gathering explosive tube of the utility model, by setting elliptical cylinder pipe body, and setting one energy-gathering groove at the both ends of the long axis of elliptical cylinder pipe body, after inserting elliptical cylinder pipe body in blast hole, only need to aim energy-gathering groove at the direction of rock mass needing to be destroyed, most of the blasting energy can be guided to energy-gathering groove position, so as to make the rock mass of corresponding position crack, realize directional fracture, improve blasting efficiency, improve blasting effect, effectively solve the problem that the blasting energy produced by the blasting device in the prior art is not concentrated, and the blasting effect is poor.