GB1017351A - Improvements in or relating to electrostatic precipitator power supply equipment - Google Patents
Improvements in or relating to electrostatic precipitator power supply equipmentInfo
- Publication number
- GB1017351A GB1017351A GB55664A GB55664A GB1017351A GB 1017351 A GB1017351 A GB 1017351A GB 55664 A GB55664 A GB 55664A GB 55664 A GB55664 A GB 55664A GB 1017351 A GB1017351 A GB 1017351A
- Authority
- GB
- United Kingdom
- Prior art keywords
- precipitator
- motor
- energized
- voltage
- supply
- 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
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Electrostatic Separation (AREA)
Abstract
1,017,351. Control systems for electrostatic precipitators. STANDARD TELEPHONES & CABLES Ltd. Jan. 6, 1964, No. 556/64. Heading H2H. Power supply equipment for electrostatic precipitators includes means for periodically increasing the voltage applied thereto and further means responsive to arcing in the precipitator to effect a momentary reduction or disconnection of the applied voltage and thereafter to re-instate the supply voltage at a value lower than that at which the arcing occurred. An electrostatic precipitator EP is supplied from an A.C. source by way of a regulator DR, driven by a reversible motor RM, a contactor CR and a rectifier RC. Initially a time switch TS is operative to close contact ts1 once or twice a minute to energize the motor RM to drive the regulator DR in a direction to increase periodically the voltage applied to the precipitator EP during which operation a capacitor C charges by way of a rectifier MR2. On the occurrence of arcing in the precipitator the capacitor C discharges by way of a rectifier MR1 and whilst discharging energizes the relay winding RL1/3 to operate its contacts rl1À1 ... rl1À3. During the discharging period of the capacitor C therefore the contactor CR is de-energized to disconnect the precipitator from the supply; the circuit to the " raise " field R of the motor RM is broken and the circuit to the " lower " field L of the motor is completed by way of a relay winding RL2/2, thus the motor RM drives the regulator DR in a direction to decrease the voltage output therefrom. Since the relay RL2/2 only holds in for the period whilst the motor RM is starting the regulator DR is only operative to decrease the voltage setting a small amount. When the capacitor C completes its discharge relay RL1/3 is de-energized whereupon the contactor is re-energized to connect the precipitator to the supply at the lower voltage setting, the " lower " field L is de-energized and the " raise " field R is re-energized and the cycle repeats. Push-buttons PB1, PB2 allow manual control of the apparatus. In other embodiments complete disconnection of the supply by the contactor CR is replaced by a partial reduction in the supply voltage using a tapped transformer or a series reactor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB55664A GB1017351A (en) | 1964-01-06 | 1964-01-06 | Improvements in or relating to electrostatic precipitator power supply equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB55664A GB1017351A (en) | 1964-01-06 | 1964-01-06 | Improvements in or relating to electrostatic precipitator power supply equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1017351A true GB1017351A (en) | 1966-01-19 |
Family
ID=9706455
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB55664A Expired GB1017351A (en) | 1964-01-06 | 1964-01-06 | Improvements in or relating to electrostatic precipitator power supply equipment |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1017351A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0054378A1 (en) * | 1980-12-17 | 1982-06-23 | F.L. Smidth & Co. A/S | Method of controlling operation of an electrostatic precipitator |
-
1964
- 1964-01-06 GB GB55664A patent/GB1017351A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0054378A1 (en) * | 1980-12-17 | 1982-06-23 | F.L. Smidth & Co. A/S | Method of controlling operation of an electrostatic precipitator |
US4659342A (en) * | 1980-12-17 | 1987-04-21 | F.L. Smidth & Co. | Method of controlling operation of an electrostatic precipitator |
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