| 摘要 |
<p>PURPOSE: To provide a method and a device for equalizing the pressures in the melting chamber and in the cooling water system of a special melting unit, for example a pressure electroslag remelting (PESR) unit having a copper ingot mold, or a pressure induction furnace having an induction coil and a cooling water system. CONSTITUTION: In a device for equalizing the pressures in the melting chamber and in the cooling water system of a special melting unit, for example a pressure electroslag remelting (PESR) unit having a copper ingot mold, or a pressure induction furnace having an induction coil and a cooling water system, in which a piston-type accumulator which is subdivided by a piston into two variable-volume chambers is provided in the cooling water circuit for the copper ingot mold/induction coil, the one chamber of the piston-type accumulator being connected via a pipe and control fittings to the cooling water circuit for the ingot mold/induction coil, and a heat exchanger, one or more circulating pumps, and an additional high pressure water refill pump being correspondingly provided in the cooling water circuit, the device is characterized in that the other chamber(18) of the piston-type accumulator(19) is connected via an additional pipe(27) and control fittings(28,29) to an intermediate vessel(30) which is partially filled with a hydraulic liquid(31), the intermediate vessel being connected via an additional hydraulic line(32) with control and shutoff fittings(33,34) to the melting chamber(35) of the PESR unit or of the pressure induction furnace, and one or more pressure sensors(36) being respectively mounted in each of the above-referenced pipes, whereby, corresponding to the design pressure of the unit, the piston-type accumulator is designed as a hydraulic cylinder with a continuous piston rod(37) or as a pneumatic cylinder with a magnetic piston, and the high pressure water refill pump(26) is designed as a metering pump.</p> |
