Tapered connecting piece

Abstract

The invention relates to a tapered connecting piece comprising a top flange, a bottom flange and a cone connected between the top flange and the bottom flange. A lining is disposed in the cone, and the cone is sequentially composed of a back lining made of a nanometer micropore heat insulating plate, a flatly laid layer made of air blocking aluminum foil and an inner layer made of an insulating plate. High temperature resistant ceramic fibers are disposed between the back lining, the flatly laid layer and the inner layer for compact filling, the cone is provided with a rainproof cover, and analumina fiber ring is disposed between joints of the flanges and the cone. The tapered connecting piece is simple in structure. After a novel tapered connecting structure is adopted, sudden contraction of an original channel cross section is eliminated, a smoke flow pattern is improved, smoke flowing resistance is reduced, the investment is reduced, a leakage point is also eliminated, and safety production can be ensured.

Description

technical field [0001] The invention relates to pipeline accessories, in particular to a tapered connector. Background technique [0002] With the improvement of the country's environmental protection requirements, more and more sulfur recovery devices are newly built in petroleum refining. Many sulfur devices use this expansion joint connection structure between the steam superheater and the tail gas heater. After a period of time, corrosion occurs at the expansion joint, and the steel plate wall is corroded and perforated, resulting in smoke leakage. In order to avoid a large amount of smoke leakage, the outside is wrapped with a thin iron plate to maintain the normal production of the device. This method cannot fundamentally solve the problem, and there is a safety hazard to daily production. Contents of the invention [0003] The present invention aims to solve the above-mentioned defects, and provides a conical connecting piece which solves the leakage problem caused...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of the country's environmental protection requirements, more and more sulfur recovery devices are newly built in petroleum refining. Many sulfur devices use this expansion joint connection structure between the steam superheater and the tail gas heater. Corrosion occurs at the expansion joint after a period of time, and the steel plate wall is corroded and perforated, resulting in smoke leakage

In order to avoid a large amount of smoke leakage, the outside is wrapped with a thin iron plate to maintain the normal production of the device. This method cannot fundamentally solve the problem, and there is a safety hazard to daily production.

Images