Apparatus for heating an electrically conductive flowable material flowing through a pipeline
US4959525A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 7, 1989 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | Feb 7, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heating apparatus for heating an electrically conductive flowable medium includes a pipe having a conductivity no greater than that of the medium and a pair of electrodes projecting in a cantilever fashion into the pipe at spaced locations therealong and each having a noble metal plated surface exposed to the flowable medium. Each electrode is sealed to the wall of the pipe with a flat-faced aspetic seal formed between a flat end face of the elctrode and a cooperating flat face on the pipe wall. The electrodes may be hollow, fluid cooled and have a rounded free end made of an electrically non-conducting material on which is mounted a temperature or pressure sensor. The exposed electrode surface may be partially coated with an electrically insulative material to confine heating current flow to a particular surface portion of the electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.