US2297740A - Voltage-regulating equipment for precipitators or the like - Google Patents

Voltage-regulating equipment for precipitators or the like Download PDF

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Publication number
US2297740A
US2297740A US362944A US36294440A US2297740A US 2297740 A US2297740 A US 2297740A US 362944 A US362944 A US 362944A US 36294440 A US36294440 A US 36294440A US 2297740 A US2297740 A US 2297740A
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US
United States
Prior art keywords
voltage
current
relay
timing
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US362944A
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English (en)
Inventor
Myron J Brown
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CA463312A priority Critical patent/CA463312A/en
Application filed by Westinghouse Electric and Manufacturing Co filed Critical Westinghouse Electric and Manufacturing Co
Priority to US362944A priority patent/US2297740A/en
Priority to JP2653841U priority patent/JPS279830Y1/ja
Application granted granted Critical
Publication of US2297740A publication Critical patent/US2297740A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/66—Applications of electricity supply techniques
    • B03C3/68—Control systems therefor

Definitions

  • my invention is. illustrated as being applied to the control of an electrostatic precipitator which is diagrammatically represented as comprising a grounded conducting duct or chimney 3, through which passes one or more precipitating-wires or electrodes 4, which are energized, through a mechanical, rotating rectifier 5, from the high-voltage secondary-winding 6 of a step-up transformer 1.
  • the primary winding 3 of the precipitator-transformer 'l is connected to a supply-circuit 9 which is energized from a single-phase supply line Ll-L2 through a ballast-resistor H and a voltage regulating means which is illustrated in the form of an inductionregulator l2 which is adjusted, either in 9. voltage-raising direction or in a voltage-lowering direction, by means of an alternating-current motor M having a raising winding RW and a lowering-winding LW.
  • auxiliary relays 25 and 26 which are respectively energized from the back and front-contacts l5 and l 5 of the voltagerelay V.
  • the auxiliary relay 25 is a voltagelowering relay having a make-contact 21 which is utilized to energize the lowering-winding LW of the regulator-motor M.
  • the auxiliary relay 28 is a voltage-raising relay having a make contact 28 which is utilized to energize the raisingwinding RW of the regulator-motor M.
  • a capacitor 29 is connected across the terminals of the two motor-windings LW and RW to obtain reversing operation with a single-phase motor, in a manner which is known in the art.
  • the first current which flows is utilized to charge the capacitor 43.
  • the capacitor 43 takes all of the tubecurrent, none of it passing through the highly inductive relay-coil 38.
  • the capacitor 43 charges at a predetermined rate limited by the amount of current which is supplied thereto through the rectifier-bridge 36 and the grid-glow tube 3
  • the relay-contact 23 which causes this backward drifting of the voltage-relay V remains closed for a predetermined brief time-interval which is controlled by the discharging-rate of the relay-bypassing capacitor 43, which is now being discharged through the relay-coil 38 in series with the adjustable resistor 44.
  • remains energized, keeping the relay-contact 23 closed, is adjustable, by means of the adjustable resistor 44.
  • Voltage-regulating equipment for an electrical load-device subject to transient current-increases randomly recurring at a rate and with an intensity dependent upon the voltage, comprising a supply-circuit for said load-device, voltage-regulating means associated with said supply-circuit, a timing-relay having an actuating-coil and a biasing-means opposing the actuating-force produced by said actuating-coil, means for electrically energizing said actuating-coil from across said supply-circuit with an amount of energization which normally causes the actuating-force of the coil to predominate in such manner as to tend to cause the timing-relay to move from a nonactuated position to an actuated position at a predetermined speed, current-responsive transient-summating means for at times causing the biasing-force to predominate in said timing-relay so as to tend to cause the timing-relay to move in the opposite direction at a current-responsive speed which is so slow, at times, as to require a

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Voltage And Current In General (AREA)
US362944A 1940-10-26 1940-10-26 Voltage-regulating equipment for precipitators or the like Expired - Lifetime US2297740A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA463312A CA463312A (en) 1940-10-26 Voltage-regulating equipment for precipitators or the like
US362944A US2297740A (en) 1940-10-26 1940-10-26 Voltage-regulating equipment for precipitators or the like
JP2653841U JPS279830Y1 (de) 1940-10-26 1941-10-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US362944A US2297740A (en) 1940-10-26 1940-10-26 Voltage-regulating equipment for precipitators or the like

Publications (1)

Publication Number Publication Date
US2297740A true US2297740A (en) 1942-10-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
US362944A Expired - Lifetime US2297740A (en) 1940-10-26 1940-10-26 Voltage-regulating equipment for precipitators or the like

Country Status (3)

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US (1) US2297740A (de)
JP (1) JPS279830Y1 (de)
CA (1) CA463312A (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455379A (en) * 1945-11-14 1948-12-07 Miles A Mclennan Electronic temperature control
US2462890A (en) * 1943-10-30 1949-03-01 Newman Morris Electrostatic precipitator system
US2528835A (en) * 1944-02-08 1950-11-07 Sylvania Electric Prod Weld timer
US2623608A (en) * 1950-06-19 1952-12-30 Research Corp System for energizing electrical precipitators
US2632522A (en) * 1950-10-28 1953-03-24 Westinghouse Electric Corp Electrostatic precipitator
US2635213A (en) * 1950-07-10 1953-04-14 Collins Radio Co Time delay circuits
US2642149A (en) * 1951-07-30 1953-06-16 Research Corp System for energizing electrical precipitators and the like
US2666496A (en) * 1951-09-06 1954-01-19 Research Corp System for energizing electrical precipitators and the like
US2673314A (en) * 1950-05-03 1954-03-23 Bendix Aviat Corp Positioning system monitor
US2675092A (en) * 1952-05-15 1954-04-13 Research Corp System for energizing electrical precipitators
US2752000A (en) * 1954-03-04 1956-06-26 Research Corp Electrical precipitator control system
US2790128A (en) * 1952-02-18 1957-04-23 Apra Precipitator Corp Discontinuing charge to precipitator electrodes during cyclic cleaning periods
US2823757A (en) * 1954-02-11 1958-02-18 Apra Precipitator Corp Control of electrostatic precipitator current by electrical means
US2881855A (en) * 1953-05-04 1959-04-14 Apra Precipitator Corp Precipitator flashover control through current and voltage response
US2895563A (en) * 1955-02-28 1959-07-21 Research Corp Electrical precipitator
US2897914A (en) * 1955-02-16 1959-08-04 United States Steel Corp Control system for electrostatic precipitation
US2925142A (en) * 1953-12-07 1960-02-16 Koppers Co Inc Electrical precipitator
US3089082A (en) * 1961-01-10 1963-05-07 Larry L Little Switching circuits
US3166705A (en) * 1961-02-13 1965-01-19 Appbau Rothemuehle Dr Brandt & Automatic voltage control for electrical precipitators
DE1276001B (de) * 1965-04-10 1968-08-29 Metallgesellschaft Ag Verfahren zur Spannungsreglung von elektrostatischen Staubabscheidern
US3577708A (en) * 1968-05-28 1971-05-04 Koppers Co Inc Spark interval responsive precipitator voltage control

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462890A (en) * 1943-10-30 1949-03-01 Newman Morris Electrostatic precipitator system
US2528835A (en) * 1944-02-08 1950-11-07 Sylvania Electric Prod Weld timer
US2455379A (en) * 1945-11-14 1948-12-07 Miles A Mclennan Electronic temperature control
US2673314A (en) * 1950-05-03 1954-03-23 Bendix Aviat Corp Positioning system monitor
US2623608A (en) * 1950-06-19 1952-12-30 Research Corp System for energizing electrical precipitators
US2635213A (en) * 1950-07-10 1953-04-14 Collins Radio Co Time delay circuits
US2632522A (en) * 1950-10-28 1953-03-24 Westinghouse Electric Corp Electrostatic precipitator
US2642149A (en) * 1951-07-30 1953-06-16 Research Corp System for energizing electrical precipitators and the like
US2666496A (en) * 1951-09-06 1954-01-19 Research Corp System for energizing electrical precipitators and the like
US2790128A (en) * 1952-02-18 1957-04-23 Apra Precipitator Corp Discontinuing charge to precipitator electrodes during cyclic cleaning periods
US2675092A (en) * 1952-05-15 1954-04-13 Research Corp System for energizing electrical precipitators
US2881855A (en) * 1953-05-04 1959-04-14 Apra Precipitator Corp Precipitator flashover control through current and voltage response
US2925142A (en) * 1953-12-07 1960-02-16 Koppers Co Inc Electrical precipitator
US2823757A (en) * 1954-02-11 1958-02-18 Apra Precipitator Corp Control of electrostatic precipitator current by electrical means
US2752000A (en) * 1954-03-04 1956-06-26 Research Corp Electrical precipitator control system
US2897914A (en) * 1955-02-16 1959-08-04 United States Steel Corp Control system for electrostatic precipitation
US2895563A (en) * 1955-02-28 1959-07-21 Research Corp Electrical precipitator
US3089082A (en) * 1961-01-10 1963-05-07 Larry L Little Switching circuits
US3166705A (en) * 1961-02-13 1965-01-19 Appbau Rothemuehle Dr Brandt & Automatic voltage control for electrical precipitators
DE1276001B (de) * 1965-04-10 1968-08-29 Metallgesellschaft Ag Verfahren zur Spannungsreglung von elektrostatischen Staubabscheidern
US3488675A (en) * 1965-04-10 1970-01-06 Metallgesellschaft Ag Method and apparatus for control of high voltage corona discharge in electrostatic dust separators
US3577708A (en) * 1968-05-28 1971-05-04 Koppers Co Inc Spark interval responsive precipitator voltage control

Also Published As

Publication number Publication date
CA463312A (en) 1950-02-21
JPS279830Y1 (de) 1952-11-13

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