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101. 发明专利

JPH07177749A POWER SUPPLY UNIT 失效
公开(公告)号：JPH07177749A
公开(公告)日：1995-07-14
申请号：JP34624793
申请日：1993-12-22
申请人： EBARA CORP
发明人： NAKAMURA ATSUSHI
IPC分类号： C01B13/11 , G05F1/02 , H02M7/48
摘要： PURPOSE:To always make it possible to perform energy saving operation regardless of the conditions of equipment by detecting a current flowing to a discharge electrode and a reactor and by regulating frequency of a frequency varying equipment based on a signal obtained by detecting currents flowing to a discharge electrode and a reactor. CONSTITUTION:Control means 9 is an arithmetic controller comprising electronic circuits such as a microcomputer or the like. A current IC flowing through a ozone generator 1 and a current IL flowing through a reactor 5 are detected by current detecting means 6 and 7 and compared each other, and the output frequency f of a frequency varying equipment 2 is varied in response to the phase difference and amplitude difference of the currents. That is, the output frequency of the frequency varying equipment 2 is regulated in such a manner that the amplitudes of the antiphase components of the current IL and current IC are made equal, thereby creating a state where the capacitance C of the ozone generating equipment 1 and the inductance L of the reactor 5 always have parallel resonance.

102. 发明专利

JPH04143810A CONTROL METHOD FOR POWER UNIT OF PLASMA ARC FURNACE 失效
公开(公告)号：JPH04143810A
公开(公告)日：1992-05-18
申请号：JP26708590
申请日：1990-10-04
申请人： FUJI ELECTRIC CO LTD
发明人： MOTOYOSHI OSAMU
IPC分类号： G05F1/02
摘要： PURPOSE:To eliminate the break a generated arc by turning off the pulse of the arm connected to an omitted plasma electrode and applying the gate pulses to four remaining arms (eight arms in all) in a phase relation similar to that secured when each arm is actuated as a 3-phase oure bridge circuit. CONSTITUTION:When an electrode 6B is omitted, the gate pulses of arms V1, Y1, U2 and X2 of the rectifiers 4A and 4B connected to the electrode 6B are turned off. Meanwhile the gate pulses are applied to the eight remaining rams U1, W1, X1, Z1, V2, W2, Y2 and Z2 in a phase relation equal to that secured when each of these arms is working as a 6-pulse rectifier (3-phase pure bridge circuit). Thus the current waveforms ir1 and is2 are identical with a 120 deg. conduction form. At the same time, a zero period is never produced to the waveform of an electrode current iR (= is2 - ir1) of an arc furnace 5 that is obtained from the addition/subtraction of currents. As a result, a stable arc is maintained.

103. 发明专利

JPH0355225B2 失效
公开(公告)号：JPH0355225B2
公开(公告)日：1991-08-22
申请号：JP16515681
申请日：1981-10-15
IPC分类号： H02M7/00 , B23K9/073 , B23K9/10 , G05F1/02

104. 实用新型

JPH0337516U 失效
公开(公告)号：JPH0337516U
公开(公告)日：1991-04-11
申请号：JP9747089
申请日：1989-08-23
IPC分类号： G05F1/02 , G05F1/66 , G05F1/70

105. 发明专利

JPH0363804A METHOD AND APPARATUS FOR MEASURING INSTABILITY OF ARC IN ELECTRIC FURNACE FOR PROCESSING LIQUID METAL 失效
公开(公告)号：JPH0363804A
公开(公告)日：1991-03-19
申请号：JP15739390
申请日：1990-06-15
申请人： SIDERURGIE FSE INST RECH
发明人： MISHIERU BURUJIYU , JIRUBEERU ANGURE , JISUREN MORE
IPC分类号： H05B7/148 , C22B9/02 , F27B3/08 , G05F1/02 , H05B7/144
摘要： PURPOSE: To manage a process in an electric furnace based on the progress of the foaming of a slag by inputting a signal indicating the differential of the strength of arc currents to wide band and narrow band filters, and outputting an energy signal in proportion to the ratio of the effective value of a signal outputted from the filters. CONSTITUTION: A signal outputted from a sensor 4 which generates a signal indicating the differential of the strength of the arc currents after measured by one of the conductors of the secondary circuit of an electric furnace is amplified by an amplifier 5, and the amplified signal is inputted to two band pass filters, a wide band filter 6 with high frequency and a narrow band filter 7 with low basic frequency. The energy values of the two signals outputted from the filters 6 and 7 are obtained by effective value extractors 8 and 9. A divider 11 calculates the ratio of the energy values of the signals outputted from the extractors 8 and 9, and the calculated result is displayed on an indicator 12. Thus, the operation of the electric furnace can be managed according to the progress of the foaming of the slag.

106. 发明专利

JPH02723B2 失效
公开(公告)号：JPH02723B2
公开(公告)日：1990-01-09
申请号：JP5284379
申请日：1979-04-28
申请人： TOKUDA SEISAKUSHO
发明人： KURYAMA NOBORU
IPC分类号： H01J37/32 , C23C14/34 , C23C14/54 , G05F1/02 , G05F1/08

107. 发明专利

JPH01195522A POWER SUPPLY CONTROL CIRCUIT 失效
公开(公告)号：JPH01195522A
公开(公告)日：1989-08-07
申请号：JP1921088
申请日：1988-01-29
申请人： NEC CORP
发明人： SATO TOSHIBUMI , IDE MOTOKI
IPC分类号： G05F1/02 , G06F1/24 , G06F1/26 , H02J7/00
摘要： PURPOSE:To continuously the operating voltage of a prescribed level to an external device right after a power supply switch is turned off by setting a resetting FF using a battery as a power supply between the power supply switch and a boosting circuit. CONSTITUTION:When a power supply switch 601 is turned on, a resetting FF 103 sets an output signal. Thus a boosting circuit 602 produces the operating voltage from a battery 604 and sends it to an external electronic equipment. When the switch 601 is turned off, this power supply OFF signal is sent to the external electronic equipment. Thus the FF 103 never resets the output signal as long as no power supply control signal is supplied despite the input of the power supply OFF signal. As a result, the circuit 602 produces and sends continuously the operating voltage of a prescribed level. Then the output signal of the FF 103 is reset when the power supply control signal is supplied from the external electronic equipment. Thus the circuit 602 stops its boosting action for the first time.

108. 发明专利

JPS6410845B2 失效
公开(公告)号：JPS6410845B2
公开(公告)日：1989-02-22
申请号：JP282379
申请日：1979-01-13
申请人： SANSHA ELECTRIC MFG CO LTD
发明人： ISHII HIDEO , USHIJIMA AKINORI , KATOOKA MASAO
IPC分类号： G05F1/02 , G05F1/08

109. 实用新型

JPS62103206U 失效
公开(公告)号：JPS62103206U
公开(公告)日：1987-07-01
申请号：JP19437385
申请日：1985-12-19
IPC分类号： G05G1/02 , G05F1/02 , G05G1/00 , H01C10/00 , H01C10/38 , H04M1/02

110. 发明专利

JPS60127647A HIGH VOLTAGE POWER SUPPLY FOR ELECTRON BEAM GENERATION DEVICE 失效
公开(公告)号：JPS60127647A
公开(公告)日：1985-07-08
申请号：JP23441583
申请日：1983-12-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： HARA KATSUNORI
IPC分类号： H01J37/06 , G05F1/02 , H01J37/248
摘要： PURPOSE:To simplify preservation and inspection of parts of an auxiliary power supply by composing an electron gun device en bloc with a high voltage tank on the side of the auxiliary power supply while the high voltage tank is divided in two in a junction spot of the auxiliary power supply and a high voltage electron beam acceleration power supply. CONSTITUTION:In a high voltage tank 1', an upper tank 21 with a built-in high voltage electron beam acceleration power supply 3 and a lower tank 22 with a built-in auxiliary power supply 6 are separably arranged. In the beam acceleration power supply 3, a high voltage boosting transformer 4 is arranged on the upper side, while an acceleration power supply unit 5 is arranged on the lower side and in the auxiliary power supply 6, an auxiliary power supply unit 8 is arranged on the upper side while an insulation transformer 7 is arranged on the lower side. Further, an electron gun device 10 is attached to the lower tank 22 through a junction part 11. Thereby, the inner face of the lower tank 22 is given good visibility thus simplifying preservation and inspection of the parts of the auxiliary power supply.

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