SU853737A1 - Spark-proof power supply source - Google Patents
Spark-proof power supply source Download PDFInfo
- Publication number
- SU853737A1 SU853737A1 SU792856683A SU2856683A SU853737A1 SU 853737 A1 SU853737 A1 SU 853737A1 SU 792856683 A SU792856683 A SU 792856683A SU 2856683 A SU2856683 A SU 2856683A SU 853737 A1 SU853737 A1 SU 853737A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- circuit
- output
- relay
- control unit
- thyristor
- Prior art date
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Safety Devices In Control Systems (AREA)
Description
(54) ИСКРОБЕЗОПАСНЫЙ ИСТОЧНИК ПИТАНИЯ(54) DIFFERENT SAFETY POWER SUPPLY
1one
Изобретение предназначено дл использовани при питании электроприводов шиберов , задвижек, вентил ционных дверей, дл различных целей в схемах автоматики и телемеханики в угольной и др. отрасл х промышленности, где существует веро тность возникновени взрыва в случае скоплени взрыво- и пожароопасных концентраций газов и пыли и по влени источников искрообразовани при нормальных коммутационных процессах в аппаратуре, а также при любых отказах в источнике, линии, нагрузке (короткое замыкание, обрыв, утечка на землю, ошибочные действи обслуживаюшего персонала и т. п.).The invention is intended for use in powering electric drives of gate valves, gate valves, ventilation doors, for various purposes in automation and telemechanics schemes in the coal industry and others, where there is a likelihood of an explosion in the event of accumulation of explosive and fire hazardous concentrations of gases and dust and the occurrence of sparking sources during normal switching processes in equipment, as well as any failures at the source, line, load (short circuit, open circuit, leakage to ground, erroneous actions TWI service personnel, etc.).
Известен искробезопасный источник питани , содержащий два тиристора, цепь управлени тиристорами и нагрузку 1.An intrinsically safe power supply is known, containing two thyristors, a thyristor control circuit and a load 1.
Наиболее близким к предлагаемому вл етс искробезопасный источник питани , параллельно входу которого включен тиристор , цепь управлени которого подключена к датчику тока источника, а последовательно в цепь нагрузки включен дополнительный тиристор 2.The closest to the proposed is an intrinsically safe power source, parallel to the input of which a thyristor is connected, the control circuit of which is connected to the current source sensor, and an additional thyristor 2 is connected in series to the load circuit.
Недостатком таких источников питани вл етс низка их надежность.The disadvantage of such power supplies is their low reliability.
Цель изобретени - повыщение надежности устройства.The purpose of the invention is to increase the reliability of the device.
- Это достигаетс тем, что искробезопасный источник питани снабжен шунтирующим транзистором и потенциометром, а также последовательно соединенными генератором контрольных разрывов цепи, элементом И, первым разделительным трансфорto матором, блоком управлени , вторым разделительным трансформатором, во вторичную обмотку которого включена обмотка реле, контакты которого включены в цепь нагрузки, причем генератор контрольных разрывов цепи подключен к базе шунти15 рующего транзистора и к вы.ходу источника питани , последовательно с основным тиристором включен потенциометр, средн точка которого соединена со вторым входом элемента И.- This is achieved by the fact that the intrinsically safe power source is equipped with a shunt transistor and a potentiometer, as well as serially connected by a generator of control circuit breaks, element I, the first separation transformer, control unit, the second separation transformer, the secondary winding of which includes a relay winding whose contacts are included into the load circuit, the generator of the control breaks of the circuit is connected to the base of the shunting transistor and to the output of the power source, in series with The main thyristor includes a potentiometer, the midpoint of which is connected to the second input of element I.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792856683A SU853737A1 (en) | 1979-12-19 | 1979-12-19 | Spark-proof power supply source |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792856683A SU853737A1 (en) | 1979-12-19 | 1979-12-19 | Spark-proof power supply source |
Publications (1)
Publication Number | Publication Date |
---|---|
SU853737A1 true SU853737A1 (en) | 1981-08-07 |
Family
ID=20866615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792856683A SU853737A1 (en) | 1979-12-19 | 1979-12-19 | Spark-proof power supply source |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU853737A1 (en) |
-
1979
- 1979-12-19 SU SU792856683A patent/SU853737A1/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SU853737A1 (en) | Spark-proof power supply source | |
US2832916A (en) | Ground detector | |
US4413303A (en) | Ignition systems | |
EP4024689A1 (en) | Direct current bus capacitor breakdown protection circuit for drives | |
EP0197257B1 (en) | Apparatus for detecting the presence of gases in a closed environment | |
RU2297703C1 (en) | DEVICE FOR PROTECTION AGAINST EARTH FAULTS IN 3 TO 10 - kV NETWORKS | |
US3150709A (en) | Burner control apparatus | |
SU1453519A1 (en) | Arrangement for shorting protection of shaft network with unidirectional supply and sectionated switching units | |
SU1638674A1 (en) | Device for cable insulation damage detection | |
SU1430550A1 (en) | Method of providing for spark-safety of induction load | |
RU2657527C2 (en) | Conveyors automated control complex | |
RU1771038C (en) | Power supply source | |
SU888254A1 (en) | Device for protecting electric plant from damage with grounded power supply source | |
SU1751360A1 (en) | Method of testing electric circuits for spark safety | |
SU995193A1 (en) | Device for protecting three-phase electric motors from winding circuit break and break-through of insulation before starting | |
US2920252A (en) | Condition detecting apparatus | |
JPS59122314A (en) | Analog input monitoring circuit for protecting relay | |
US3011161A (en) | Pushbutton supervised fire detection system | |
JPS59122313A (en) | Analog input unit inspecting circuit for protecting relay | |
SU1465560A1 (en) | Spark-safe remote control apparatus | |
US3529241A (en) | System for indicating rate of change of voltage | |
SU1302096A1 (en) | Device for monitoring flame and serviceability of transducer insulation | |
SU859652A1 (en) | Apparatus for separating spark-hazard and spark-proof electic circuits | |
SU758356A1 (en) | Device for signalling three-phase mains state | |
SU1274023A1 (en) | Device for signalling conditions and checking relay protection |