CN102255289A - Thyristor alternating current power regulator control system and application thereof in electrical heating temperature control - Google Patents
Thyristor alternating current power regulator control system and application thereof in electrical heating temperature control Download PDFInfo
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- CN102255289A CN102255289A CN201110216325XA CN201110216325A CN102255289A CN 102255289 A CN102255289 A CN 102255289A CN 201110216325X A CN201110216325X A CN 201110216325XA CN 201110216325 A CN201110216325 A CN 201110216325A CN 102255289 A CN102255289 A CN 102255289A
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Abstract
The invention relates to a thyristor alternating current power regulator control system and application thereof in electrical heating temperature control. A normally closed alternating current contactor is connected in series between a bidirectional thyristor and a load; two wiring terminals of the coil of the normally closed alternating current contactor are respectively and electrically connected with the alarm signal output end of a temperature control instrument, and are respectively and electrically connected with the signal output end of a cyclic wave controller; and when the cyclic wave controller controls the bidirectional thyristor to disconnect, or when the temperature control instrument is in a temperature alarm state, an armature is released after the coil of the normally closed alternating current contactor is powered off, the main contact of the normally closed alternating current contactor is disconnected, and the load and a power supply are cut off. The system provided by the invention has the advantages that when the bidirectional thyristor is punctured, the output of the bidirectional thyristor can be cut off effectively and timely, and the heating load is prevented from burning loss.
Description
Technical field
The present invention relates to a kind of thyristor and exchange power regulating eqiupment control system and the application in the control of electric heating temperature, belong to thyristor interchange power Power Regulation control resist technology field in the smelter.
Background technology
It is a kind of of name " semiconductor AC power controller " (the Semiconductor AC Power Controller) of International Electrotechnical Commission (IEC) that thyristor exchanges power controller, it is a switch element with thyristor (controllable silicon SCR or bidirectional triode thyristor TRIAC), being a kind of noncontacting switch that can control closing time quickly and accurately, is A.T.C system high accuracy and high dynamic indicator power terminal control appliance commonly used.Thyristor exchanges automatic, the manually control of temperature that power regulating eqiupment is mainly used in electroheat equipments such as various resistance furnaces, electric heater, diffusion furnace, thermostat, baking oven, smelting furnace.It is in a fixed cycle or variable cycle that thyristor exchanges power regulating eqiupment, controls the size of power output with the alternating current cycle of control conducting.
Existing thyristor exchanges power regulating eqiupment and comprises all wave controllers, thyristor (bidirectional triode thyristor, inverse parallel controllable silicon), fast acting fuse; parts such as overcurrent protection, audible alarm, line voltmeter, power output indicating instrument; comprise that also temperature shows and control instrument; adopt advanced instrument, have controls such as P, I, D or P, I, D self adaptation.Existing thyristor exchanges the power controller circuit as shown in Figure 1.When the thyristor in the thyristor interchange power regulating eqiupment breaks down, adopt fast acting fuses cut off the electricity supply with load between circuit be connected, can be about fast acting fuse with reference to the record of following document, the open date of Chinese patent CN201656491U " a kind of intelligent electric power power regulating eqiupment ": on November 24th, 2010; Xin Qi, brave perhaps and Li Hua, " application of intelligent thyristor power regulating eqiupment in the control of electric heating temperature ", " industry heating " the 6th phase in 1999.The application quotes described document technology as a setting.Adopt fast acting fuse cut off the electricity supply with load between only be electrically connected and when short circuit or over current fault appear in load, work, but during for the bidirectional thyristor generation breakdown fault in the thyristor interchange power regulating eqiupment control system, fast acting fuse but can not be effectively in time cuts off the output of bidirectional thyristor, thereby causes accident such as load burnout to take place.
Summary of the invention
At the deficiencies in the prior art, the invention provides a kind of reliability and exchange the power regulating eqiupment control system with the high thyristor of fail safe.The present invention also provides a kind of thyristor to exchange the application of power regulating eqiupment control system in the control of electric heating temperature.
Technical scheme of the present invention is as follows:
A kind of thyristor exchanges the power regulating eqiupment control system, comprises bidirectional thyristor, all wave controllers and temperature control instrument, and described bidirectional thyristor is connected between power supply and the load; The temperature sensor that is provided with in the G utmost point of described bidirectional thyristor order and all wave controllers, temperature control instrument and the load is electrically connected; It is characterized in that, be in series with normally closed A.C. contactor between bidirectional thyristor and load, two terminals of the coil of normally closed A.C. contactor are electrically connected with the alarm signal output ends of temperature control instrument respectively; Two terminals of the coil of normally closed A.C. contactor also are electrically connected with the signal output part of all wave controllers respectively.
When all wave controllers control bidirectional thyristor disconnects or temperature control instrument when the temperature alarming state occurring, armature discharges behind the coil losing electricity of normally closed A.C. contactor, and the main contacts of normally closed A.C. contactor disconnects, and cuts off load and power supply.
Described normally closed A.C. contactor is the normally closed A.C. contactor of ABB AF400-30 type
Described bidirectional thyristor is a KS type bidirectional thyristor.
Circuit between power supply and the load is provided with current transformer, and current transformer is electrically connected in turn with protection relay and acoustic alarm.Current transformer carries out measurement of inductance to the electric current of circuit between power supply and load, and protection relay is measured electric current to current transformer and detected, and reports to the police when the overcurrent situations acoustic alarm occurring.
Thyristor of the present invention exchanges the application of power regulating eqiupment control system in the control of electric heating temperature, and method is as follows:
1) in the electric heating temperature-control circuit, the bidirectional thyristor of connecting between power supply and load is KS type bidirectional thyristor; The temperature sensor that is provided with in the G utmost point of bidirectional thyristor order and all wave controllers, temperature control instrument and the load is electrically connected; All wave controllers or temperature control instrument are controlled the bidirectional thyristor break-make respectively; Temperature control instrument sends alarm signal when the control bidirectional thyristor disconnects;
2) installation of normally closed A.C. contactor in the electric heating temperature-control circuit: the normally closed A.C. contactor of between the described bidirectional thyristor of step 1) and load, connecting, two terminals of the coil of normally closed A.C. contactor are electrically connected with the alarm signal output ends of temperature control instrument respectively; Two terminals of the coil of normally closed A.C. contactor also are electrically connected with the signal output part of all wave controllers respectively; Mounted normally closed A.C. contactor is formed thyristor with the described electric heating temperature-control circuit of step 1) and is exchanged the power regulating eqiupment control system; Described normally closed A.C. contactor is the normally closed A.C. contactor of ABBAF400-30 type;
3) thyristor exchanges the power regulating eqiupment control system and realizes defencive function: when all wave controller control bidirectional thyristors disconnect or temperature control instrument when the temperature alarming state occurring; armature discharges behind the coil losing electricity of normally closed A.C. contactor; the main contacts of normally closed A.C. contactor disconnects, and cuts off load and power supply.
The invention has the advantages that: strengthened the operational reliability and the fail safe of thyristor interchange power regulating eqiupment control system, when the bidirectional thyristor generation breakdown fault in the thyristor interchange power regulating eqiupment control system, can effectively in time the output of bidirectional thyristor be cut off, avoid occurring the heating load scaling loss.
Description of drawings
Fig. 1 is the circuit connection diagram that existing thyristor exchanges the power regulating eqiupment control system;
Fig. 2 is the circuit connection diagram that thyristor of the present invention exchanges the power regulating eqiupment control system.
In Fig. 1-2,1, load; 2, bidirectional thyristor; 3, all wave controllers; 4, temperature control instrument; 5, sensor signal; 6, current transformer; 7, protection relay; 8, acoustic alarm; 9, fast acting fuse; 10, normally closed A.C. contactor.
Embodiment
Below in conjunction with embodiment and Figure of description the present invention is described in detail, but is not limited thereto.
Embodiment 1
A kind of thyristor exchanges the power regulating eqiupment control system, comprises bidirectional thyristor 2, all wave controllers 3 and temperature control instrument 4, and described bidirectional thyristor 2 is connected between power supply and the load 1; The temperature sensor that is provided with in the G utmost point of described bidirectional thyristor 2 order and all wave controllers 3, temperature control instrument 4 and the load 1 is electrically connected; It is characterized in that be in series with normally closed A.C. contactor 10 between bidirectional thyristor 2 and load 1, two terminals of the coil of normally closed A.C. contactor 10 are electrically connected with the alarm signal output ends of temperature control instrument respectively; Two terminals of the coil of normally closed A.C. contactor 10 also are electrically connected with the signal output part of all wave controllers 3 respectively.Described normally closed A.C. contactor 10 is the normally closed A.C. contactor of ABBAF400-30 type.Described bidirectional thyristor 2 is a KS type bidirectional thyristor.
By Fig. 1,2 as can be seen, thyristor exchanges the power output size of power regulating eqiupment control system and power supply and stops to export and mainly be the conducting by bidirectional thyristor and turn-off and realize.In system's running, be prone to faults such as bidirectional thyristor puncture.The present invention increases normally closed A.C. contactor by the outlet side that exchanges the power regulating eqiupment control system at thyristor, the action of normally closed A.C. contactor is controlled by the temperature alarming of bidirectional thyristor working signal and temperature control instrument, when all wave controllers control bidirectional thyristor disconnects or temperature control instrument when the temperature alarming state occurring, armature discharges behind the coil losing electricity of normally closed A.C. contactor, the main contacts of normally closed A.C. contactor disconnects, cut off load and power supply, avoid occurring the heating load scaling loss.
Embodiment 2,
Exchange the power regulating eqiupment control system as embodiment 1 described a kind of thyristor, difference is that the circuit between power supply and the load 1 is provided with current transformer 6, and current transformer 6 is electrically connected in turn with protection relay 7 and acoustic alarm 8.The electric current of 6 pairs of circuits between power supply and load 1 of current transformer carries out measurement of inductance, and 7 pairs of current transformers of protection relay 6 are measured electric current and detected, and reports to the police when overcurrent situations acoustic alarm 8 occurring.
Exchange the application of power regulating eqiupment control system in the control of electric heating temperature as embodiment 1 described a kind of thyristor, method is as follows:
1) in the electric heating temperature-control circuit, the bidirectional thyristor 2 of connecting between power supply and load 1 is KS type bidirectional thyristor; The temperature sensor that is provided with in the G utmost point of bidirectional thyristor 2 order and all wave controllers 3, temperature control instrument 4 and the load is electrically connected; All wave controllers 3 or temperature control instrument 4 are controlled bidirectional thyristor 2 break-makes respectively; Temperature control instrument 4 sends alarm signal when control bidirectional thyristor 2 disconnects;
2) installation of normally closed A.C. contactor 10 in the electric heating temperature-control circuit: the normally closed A.C. contactor 10 of between the described bidirectional thyristor 2 of step 1) and load 1, connecting, two terminals of the coil of normally closed A.C. contactor 10 are electrically connected with the alarm signal output ends of temperature control instrument 4 respectively; Two terminals of the coil of normally closed A.C. contactor 10 also are electrically connected with the signal output part of all wave controllers 3 respectively; Mounted normally closed A.C. contactor 10 is formed thyristor with the described electric heating temperature-control circuit of step 1) and is exchanged the power regulating eqiupment control system; Described normally closed A.C. contactor 10 is the normally closed A.C. contactor of ABB AF400-30 type;
3) thyristor exchanges the power regulating eqiupment control system and realizes defencive function: when all wave controller 3 control bidirectional thyristors 2 disconnect or temperature control instrument 4 when the temperature alarming state occurring; armature discharges behind the coil losing electricity of normally closed A.C. contactor 10; the main contacts of normally closed A.C. contactor 10 disconnects, and cuts off load and power supply.
Claims (5)
1. a thyristor exchanges the power regulating eqiupment control system, comprises bidirectional thyristor, all wave controllers and temperature control instrument, and described bidirectional thyristor is connected between power supply and the load; The temperature sensor that is provided with in the G utmost point of described bidirectional thyristor order and all wave controllers, temperature control instrument and the load is electrically connected; It is characterized in that, be in series with normally closed A.C. contactor between bidirectional thyristor and load, two terminals of the coil of normally closed A.C. contactor are electrically connected with the alarm signal output ends of temperature control instrument respectively; Two terminals of the coil of normally closed A.C. contactor also are electrically connected with the signal output part of all wave controllers respectively.
2. to exchange the power regulating eqiupment control system by gas 1 described a kind of thyristor as right, it is characterized in that described normally closed A.C. contactor is the normally closed A.C. contactor of ABBAF400-30 type.
3. to exchange the power regulating eqiupment control system by gas 1 described a kind of thyristor as right, it is characterized in that described bidirectional thyristor is a KS type bidirectional thyristor.
4. will exchange the power regulating eqiupment control system by gas 1 described a kind of thyristor as right, it is characterized in that the circuit between power supply and the load is provided with current transformer, current transformer is electrically connected in turn with protection relay and acoustic alarm.
5. will exchange the application of power regulating eqiupment control system in the control of electric heating temperature by gas 1 described a kind of thyristor as right, method is as follows:
1) in the electric heating temperature-control circuit, the bidirectional thyristor of connecting between power supply and load is KS type bidirectional thyristor; The temperature sensor that is provided with in the G utmost point of bidirectional thyristor order and all wave controllers, temperature control instrument and the load is electrically connected; All wave controllers or temperature control instrument are controlled the bidirectional thyristor break-make respectively; Temperature control instrument sends alarm signal when the control bidirectional thyristor disconnects;
2) installation of normally closed A.C. contactor in the electric heating temperature-control circuit: the normally closed A.C. contactor of between the described bidirectional thyristor of step 1) and load, connecting, two terminals of the coil of normally closed A.C. contactor are electrically connected with the alarm signal output ends of temperature control instrument respectively; Two terminals of the coil of normally closed A.C. contactor also are electrically connected with the signal output part of all wave controllers respectively; Mounted normally closed A.C. contactor is formed thyristor with the described electric heating temperature-control circuit of step 1) and is exchanged the power regulating eqiupment control system; Described normally closed A.C. contactor is the normally closed A.C. contactor of ABBAF400-30 type;
3) thyristor exchanges the power regulating eqiupment control system and realizes defencive function: when all wave controller control bidirectional thyristors disconnect or temperature control instrument when the temperature alarming state occurring; armature discharges behind the coil losing electricity of normally closed A.C. contactor; the main contacts of normally closed A.C. contactor disconnects, and cuts off load and power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110216325XA CN102255289A (en) | 2011-07-29 | 2011-07-29 | Thyristor alternating current power regulator control system and application thereof in electrical heating temperature control |
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| CN201110216325XA CN102255289A (en) | 2011-07-29 | 2011-07-29 | Thyristor alternating current power regulator control system and application thereof in electrical heating temperature control |
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| CN201110216325XA Pending CN102255289A (en) | 2011-07-29 | 2011-07-29 | Thyristor alternating current power regulator control system and application thereof in electrical heating temperature control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054311A (en) * | 2015-09-01 | 2015-11-18 | 云南中烟工业有限责任公司 | Non-contact type heating electronic cigarette |
| CN106604418A (en) * | 2016-11-22 | 2017-04-26 | 芜湖东旭光电科技有限公司 | Control method for molded electrical system, controller and molded electrical system |
| CN114069696A (en) * | 2021-11-12 | 2022-02-18 | 中国葛洲坝集团装备工业有限公司 | Method and equipment for enhancing reliability of silicon controlled rectifier grid-connected and off-grid switching device of microgrid |
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| JP2003309925A (en) * | 2002-04-16 | 2003-10-31 | Kyosan Electric Mfg Co Ltd | Half-wave operation detector |
| CN201821255U (en) * | 2010-09-08 | 2011-05-04 | 攀钢集团攀枝花钢铁研究院有限公司 | Controllable silicon power regulator |
| CN202166868U (en) * | 2011-07-29 | 2012-03-14 | 莱芜钢铁集团有限公司 | Thyristor alternating-current power regulator control system |
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2011
- 2011-07-29 CN CN201110216325XA patent/CN102255289A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003309925A (en) * | 2002-04-16 | 2003-10-31 | Kyosan Electric Mfg Co Ltd | Half-wave operation detector |
| CN201821255U (en) * | 2010-09-08 | 2011-05-04 | 攀钢集团攀枝花钢铁研究院有限公司 | Controllable silicon power regulator |
| CN202166868U (en) * | 2011-07-29 | 2012-03-14 | 莱芜钢铁集团有限公司 | Thyristor alternating-current power regulator control system |
Non-Patent Citations (1)
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| 刘任庆: "晶闸管交流调功器在制氧厂再生加热器上的应用", 《电气开关》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054311A (en) * | 2015-09-01 | 2015-11-18 | 云南中烟工业有限责任公司 | Non-contact type heating electronic cigarette |
| CN106604418A (en) * | 2016-11-22 | 2017-04-26 | 芜湖东旭光电科技有限公司 | Control method for molded electrical system, controller and molded electrical system |
| CN106604418B (en) * | 2016-11-22 | 2019-05-03 | 芜湖东旭光电科技有限公司 | For forming control method, controller and the molding electrical system of electrical system |
| CN114069696A (en) * | 2021-11-12 | 2022-02-18 | 中国葛洲坝集团装备工业有限公司 | Method and equipment for enhancing reliability of silicon controlled rectifier grid-connected and off-grid switching device of microgrid |
| CN114069696B (en) * | 2021-11-12 | 2024-04-02 | 中国葛洲坝集团装备工业有限公司 | Method and equipment for enhancing reliability of micro-grid silicon controlled rectifier off-grid switching device |
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Application publication date: 20111123 |