Split mechanical seal with split ring connection interface adopting magnetic fluid sealing for molten salt pump

Abstract

The patent provides a split mechanical seal with split ring connection interface adopting magnetic fluid sealing for a molten salt pump and aims at solving the problem that moving and static ring split connection interface have leakage channels during installation and a split connection interface convergent gap caused by asymmetric deformation of a split ring leaks fluid during work. Two half rings forming a moving ring and two half ring forming a static ring are respectively embedded into a pair of magnetic generators, namely a first magnetic generator and a second magnetic generator on eachpair of split ring connection interfaces; the first and second magnetic generators comprise first and second pole shoes and first and second permanent magnets; opposite work faces of the first pole shoes and the second pole shoes are provided with pole teeth and tooth sockets which are arranged at intervals along the radial direction and the axial direction; planes, towards the end face of a sealring, of the first pole shoes and the second pole shoes, are provided with one group of pole teeth and tooth sockets arranged at intervals; magnetic fluid on the split ring connection interfaces and radial sealing tapes, towards the end face of the seal ring, of the split ring connection interfaces, forms a fluid film for blocking magnetic fluid under the action of a magnetic force.

Description

technical field [0001] The technology belongs to the technical field of mechanical seals, relates to split mechanical seals and magnetic liquid seal technologies, and is suitable for sealing between molten salt pump shells and pump shafts. Background technique [0002] Since the beginning of this century, due to the increasingly serious shortage of energy and resources worldwide, and related environmental issues such as the greenhouse gas effect have become increasingly prominent, the search for sustainable, safe, stable and environmentally friendly energy has attracted the attention of all countries. In 2002, the policy group of the Generation IV Nuclear Energy International Forum (GIF) released a technology roadmap, proposing six types of reactors accepted by almost all nuclear energy countries, three of which are sodium-cooled fast reactors, lead-cooled fast reactors and gas-cooled reactors. Fast reactors, the other three are ultra-high temperature reactors, supercritical...

AI Technical Summary

Problems solved by technology

[0006] In view of the deficiencies in the prior art above, this patent aims to provide a sealing technology for the joint interface of the split ring of the split mechanical seal, that is, to apply the magnetic liquid sealing technology to the joint interface of the split ring of the split mechanical seal to solve the problem of The leakage channel of the split joint interface of the dynamic and static rings during installation and the fluid leakage problem of the convergent gap of the split joint interface caused by the asymmetric deformation of the split ring during operation

Images