In order to replace tubes and the end socket which could be damaged easily and prolong life of the heat exchanger,disassembling and sealing part of disassembling heat exchanger was improved.

Relying on its excellent strength and stiffness,circular-shaped cover with a topsy-turvy cone is especially suitable for the end sealing of detachable spiral heat exchanger.

As a typical compact heat exchanger, although detachable spiral heat exchanger (hereinafter referred to as DSHE) has many advantages: simple structure, convenient manufacturing, high thermal efficiency, low drag ,easy cleaning, etc, its application and dissemination is not satifactory because of the lack of systematic design theory.

High-power detachable hot galvanizing furnace and its operation;

The study of treatment on the early class II malocclusion of mandibular retraction with a new detachable headgear-activator.;

The Effect of Detachable PFM (Porcelain Fused to Metal) Fixed Bridges on Periodontal Microbial of the Abutment Teeth;