Device for power supply of gas-cleaning electrical precipitators

摘要

PCT No. PCT/SU87/00062 Sec. 371 Date Jan. 11, 1989 Sec. 102(e) Date Jan. 11, 1989 PCT Filed May 26, 1987 PCT Pub. No. WO88/09214 PCT Pub. Date Dec. 1, 1988.A device for power supply of gas-cleaning electrical precipitators comprises two constant voltage sources (1,2), the unlike poles (5,6) of each of the sources being grounded. Two high-voltage commutators made as triode-type thermionic rectifiers (7,8) with a hollow anode (11) are connected between the other unlike poles of each of the constant voltage sources (1,2) and a corona displaying electrode (16) of an electrical precipitator (17). Connected to a cathode (9) and a control electrode (10) of each of the triode-type thermionic rectifiers (7,8) are modulators (18, 19) of alternating polarity voltage which are connected through isolation transformers (38,39) to a control unit (40), the latter being connected to pickups (49,50,51,52) of electrical and physical parameters. Each electric circuit is provided with series-connected inductive storage elements (13,15), the electric circuit comprising series-connected the constant voltage source (1,2), the triode-type thermionic rectifier (7,8) and the corona-displaying electrode (16) of the electrical precipitator (17).