FIELD: electric heating, in particular, electric heaters for thermal treatment of welded joints of structures, pipes, steam, gas and petroleum lines in situ. SUBSTANCE: flexible electric heater uses detachable ceramic insulators enveloping it, made up of two or more elements with open slots, the slot opening angle is 30 to 60 deg. Ceramic insulators located at the radiator ends are connected by means of elements made in the form of bushes and fixed by catches. Insulator elements are connected according to the "dovetail" principle. EFFECT: enhanced convenience in use, low cost, enhanced durability, temperature attained on thermal-treated surface is within 1050 to 12,000 deg. 3 cl, 5 dwg
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|---|---|---|---|
| FLEXIBLE HEATING DEVICE | 2005 |
|
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