SU1160195A1 - Electrode heater - Google Patents

Abstract

ELECTRODE HEATER, containing a vertical sealed heating chamber, partially filled with liquid. intermediate heat carrier, supplied with electrodes immersed in the latter and communicated by the lower part by means of bypass-. a pipeline with a rigid compensation tank having a lid, different in that, in order to increase reliability and expand the range of operating parameters, the compensation tank is sealed and located under the heating chamber, and the end of the overflow pipeline is led to the bottom of the compensation tank its cover ..

Description

;about

U1 The invention relates to liquid electrode heaters, and can be used in industrial power engineering. Known electrode heater containing a vertical sealed heating chamber, partially filled with a heated liquid and provided with electrodes 1 placed in the latter. The disadvantage of this device is the impossibility of heating non-conductive liquids. Closest to the invention, there is an electrode heater containing a vertical sealed Lagrev chamber, partially filled with a liquid 1M intermediate heat carrier, provided with electrodes immersed in the latter and communicated by the lower part by means of a bypass pipe with a rigid compensation tank having a lid, and the compensation tank is made movable and communicated with the atmosphere, and the bypass pipeline is made flexible. 2. The disadvantages of the well-known device are reduced reliability after Because of the pressure change in the heating chamber, the compensation capacitance needs to be shifted, while the range of operating parameters is narrow, since the pressure in the heating chamber cannot deviate significantly from the atmospheric pressure. The purpose of the invention is to increase the reliability and expansion of the range of working parameters. This goal is achieved by the fact that in the electrode heater containing a hermetic heating chamber partially filled with a liquid intermediate heat carrier, provided with electrodes immersed in the latter and communicated by the lower part with the aid of an overflow pipe with a rigid compensation tank having a lid, the compensation tank is sealed and located under the heating chamber, and. the end of the bypass pipeline is wound up in the lower part of the compensation tank through its latch. The drawing shows the electrode heater, longitudinal. The electrode heater contained a vertical sealed heating chamber 1, partially filled with a liquid intermediate heat carrier, provided with electrodes 2 immersed in the latter and communicated by the lower part by means of a bypass conduit 3 with a rigid compensation capacitance. 4, which has a krpik 5. The compensation tank 4 is made sealed and located under the heating chamber 1, and the overflow pipe 3 is led to the lower part of the compensation tank 4 through its cover 5. The electrode heater is also fitted with a germs (with a stopper 6 with a safety valve (not shown), bushing insulators 7, electrical power supply box 8. Electrodes 2 can be made flat, rod-shaped or in the form of coaxial cylinders. Compensation tank 4 is made with a recess 9 provided with a sealed drain 10. Electrode heater works as follows: When the intermediate heat carrier is poured into the heating chamber 1, a part of it through the overflow pipe 3 is taken into the compensation tank 4, compressing the air in it. After turning on the electrodes 2 into the electrical network flowing through the intermediate heat carrier (in which quality it is possible to use water) the current heats it up to boil. The resulting steam rises to the upper part of the heating chamber 1 washed by the heated heat carrier and, cooling, condenses . The condensate flows to the lower part of the heating chamber 1. As the temperature of the surface of the upper part 1 of the heating chamber 1 increases, the condensation of steam deteriorates and the pressure in the heating chamber t increases, according to which the intermediate coolant is squeezed into the compensation tank 4. The level of the heat carrier between the electrodes 2 decreases and the heating power decreases until power heat transfer electrode heater in a heated environment. In this way, a steady state heat exchange occurs. When changing the mode of heat transfer, for example, with an increase in heat sink in heating. / 31160

After washing the heating chamber 1 outside, the condensation intensity increases due to the decrease in the temperature of the wall of chamber 1, and the pressure in the latter drops, causing the flow j of the intermediate heat carrier from the compensation capacitance A to the interelectrode space 1. As a result, the power is twisted and installed working mode 10bots.

In order to reduce the temperature deviations of the wall of the heating chamber 1 from the calculated ones, it is desirable that the electrodes 2 (5 be made as low as possible by

95

possibly with more flatness and sparing

The preloaded DEVICE improves its reliability in operation by eliminating moving and flexible parts, as well as expanding the power range due to the expansion of the range of operating pressures in the heating chamber.

In addition, the electrode heater can be made compact. The presence of an air gap between the heating chamber and the compensation tank makes it possible to stabilize the volume and temperature of the compensation tank.

Claims (1)

ELECTRODE HEATER containing a vertical sealed heating chamber partially filled with liquid. intermediate heat carrier, equipped with electrodes immersed in the last one and communicated with the lower part by means of a bypass pipe with a rigid compensation tank with a cover, with a cover and with the aim of increasing reliability and expanding the range of operating parameters , the compensation tank is sealed and located under the heating chamber, and the end of the bypass pipe is brought into the lower part of the compensation tank through its cover. >