CN103399613B - Novel voltage stabilizer with smoke sampling protection - Google Patents
Novel voltage stabilizer with smoke sampling protection Download PDFInfo
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- CN103399613B CN103399613B CN201310335343.9A CN201310335343A CN103399613B CN 103399613 B CN103399613 B CN 103399613B CN 201310335343 A CN201310335343 A CN 201310335343A CN 103399613 B CN103399613 B CN 103399613B
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Abstract
A novel voltage stabilizer with smoke sampling protection comprises an output protection control circuit and an input protection control circuit. A voltage sampling circuit, a voltage stabilizing control circuit, a motor driving circuit, and a state indication circuit are arranged beside the output protection control circuit. A temperature and current sampling circuit, a smoke sampling circuit, a calculation and processing circuit, and a time delay circuit are arranged beside the input protection control circuit. The output protection control circuit is connected to the input protection control circuit through the time delay circuit. On abnormal conditions, a coil of an autotransformer T1 heats, the insulation of the coil is destroyed, carbon monoxide or hydrogen gas is given off, or smoke is generated, a gas sensor in the smoke sampling circuit collects carbon monoxide or hydrogen gas or smoke and converts carbon monoxide or hydrogen gas or smoke into electric signals, the calculation and processing circuit processes and amplifies the signals, a switch K1 of the input end of the voltage stabilizer is turned off through the input protection control circuit, the coil of the autotransformer T1 cuts off electricity, and then failures can not further expand, so that the purpose of reliable protection is achieved.
Description
Technical field
The invention belongs to the AC voltage regulator technical field of contact type structure, specifically relate to a kind of voltage stabilizer with smog sampling protection.
Background technology
Contact AC voltage regulator in the market, the closed-loop control system be made up of the pressure regulator of particular design or transformer and controller (or control circuit), by automatically adjusting the electric device reaching regulated output voltage object, referring to Fig. 1, be usually made up of contact autotransformer, automatic control circuit and servomotor.This kind of voltage stabilizer, adopt stepless voltage regulation, the output accuracy of product is high, waveform distortion is little, antijamming capability is strong, cost performance is high, and market coverage scope is wide, but finds according to production and sales for many years, the failure rate of this type of voltage stabilizer is also higher, main cause is as follows: 1, due to motor wearing and tearing or control circuit board fault, cause pressure regulating device malfunctioning, causes motor reversal to coil lower position as motor wiring board damages, form the low-resistance situation of high voltage, input voltage raises, and transformer magnetizing current increases, and very easily makes that voltage stabilizer coil is overheated to be burnt, 2, because this type of voltage stabilizer is auto-transformer configuration, when the input voltage is low, the capacity that transformer exports declines, the correlation standard of voltage stabilizer, this type of voltage stabilizer user when low-voltage inputs should fall to hold and use, if input voltage range is the voltage stabilizer that 160V ~ 250V exports 220V, when input voltage is lower than 198V, should start to fall to hold and use, 50% of nominal load can only be used when input voltage is at 160V, what this was voltage stabilizer falls appearance characteristic, but in actual use, due to the polytrope of line voltage, terminal user is difficult to accomplish to fall in time to hold use, usually the load used when voltage height, when input voltage is low, voltage stabilizer uses in overload, therefore voltage stabilizer very easily transships use, make that coil is overheated to be burnt out, 3, adopted carbon brush due to product and carried out pressure regulation, there are wearing and tearing in carbon brush, after long term wear, carbon brush there will be sparking in movement, and as do not processed in time, the coil of carbon brush contact position can generate heat and burn out.Due to above reason, when after voltage stabilizer coil heating, the turn-to-turn insulation of coil can be destroyed, after long-time energising, voltage stabilizer very easily burns out, can the serious accident such as initiation fire time serious.Although existing overheating protection, overcurrent protection and overvoltage protection in regulator products design, but because the pressure regulation of this type of voltage stabilizer realizes by carbon brush is mobile on autotransformer coil, because the changeable of electrical network and the unfixing of user load wait many factors in real work, voltage stabilizer carbon brush position is changeable, the sites of heat generation of coil also changes at any time, due to not fixing of trouble spot, actual overheating protection cannot accurately be sampled, and can not coil be avoided completely to burn out; The working current of overcurrent protection sampling voltage stabilizer is protected, due to this type of voltage stabilizer have input voltage low time need fall hold use characteristic, so same working current current value when voltage height is normal signal, and when voltage is low, time this electric current be exactly likely abnormal signal, therefore overcurrent protection also cannot be protected accurately and reliably; Though the overvoltage protection of product can protect the safety of output load; if but due to the rising of line voltage or the inner pressure regulating device exception of voltage stabilizer after overvoltage; the autotransformer of voltage stabilizer inside can be made to enter magnetic saturation state; coil can damage; voltage stabilizer itself can damage; therefore the overvoltage protection of voltage stabilizer can only protect the load of voltage stabilizer rear end, can not protect voltage stabilizer self.
Therefore above-mentioned existing safeguard measure all has respective limitation in the process of implementation; burning of coil is difficult to accomplish to protect timely and effectively; in addition on market most of voltage stabilizer for above-mentioned measure protection normally by cut off voltage stabilizer export mode realize; and in actual use because voltage stabilizer inside still has voltage; when coil fault, accident still has and may spread further, thoroughly effectively cannot avoid security incident.
Summary of the invention
The present invention mainly solves the technical matters existing for above-mentioned prior art, provides a kind of voltage stabilizer with smog sampling protection.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals: a kind of voltage stabilizer with smog sampling protection, comprise output protection control circuit and input protection control circuit, described output protection control circuit is other is provided with voltage sampling circuit, controlling circuit of voltage regulation, motor-drive circuit, condition indication circuit, described input protection control circuit is other is provided with temperature and current sampling circuit, smog sample circuit, computing and treatment circuit, delay circuit, output protection control circuit is connected to input protection control circuit through delay circuit, the wherein output voltage of voltage sampling circuit sampling voltage stabilizer, undertaken analyzing by controlling circuit of voltage regulation and signal reached motor-drive circuit so that the no-load voltage ratio that drive motor carries out adjusting autotransformer T1 carrys out regulated output voltage, controlling circuit of voltage regulation detects output voltage simultaneously, when arriving the voltage threshold of regulation, the output terminal K switch 2 of voltage stabilizer is turned off to protect output terminal load by output protection control circuit, the output voltage signal that controlling circuit of voltage regulation detects by output protection control circuit is simultaneously transferred to input protection control circuit via delay circuit, when in time delay, output voltage continues the voltage threshold arriving regulation, then input protection control circuit turns off the K switch 1 of voltage stabilizer input end, to protect voltage stabilizer, otherwise then input protection control circuit is without the need to turning off the K switch 1 of voltage stabilizer input end, voltage stabilizer normally works, the temperature of temperature and current sampling circuit sampling autotransformer T1 coil and output current, turn off the K switch 1 of voltage stabilizer input end, to protect voltage stabilizer when excess temperature or overcurrent by computing and treatment circuit by input protection control circuit after being processed, under abnormal conditions, the coil heating of autotransformer T1, the insulation breakdown of coil, give out carbon monoxide, hydrogen or produce smog, the gas sensor in smog sample circuit collects carbon monoxide, hydrogen or smog and is converted into electric signal, after being amplified by signal transacting by computing and treatment circuit, the K switch 1 of voltage stabilizer input end is turned off by input protection control circuit, the coil of autotransformer T1 has cut off power supply, and fault can not expand further, thus reaches the object of reliably protecting.
As preferably; the first feed circuit that described output protection control circuit and other voltage sampling circuit, controlling circuit of voltage regulation, motor-drive circuit, the condition indication circuit established are made up of inductive coil are powered, and the second feed circuit that described input protection control circuit and other temperature of establishing and current sampling circuit, smog sample circuit, computing and treatment circuit, delay circuit are made up of the transformer T2 being connected to voltage stabilizer input end are powered.
As preferably, the gas sensor in smog sample circuit can select suitable installation site according to product structure, is usually arranged near voltage stabilizer internal main coil.
The beneficial effect adopting said structure to bring to the present invention is:
1) protection comprehensively, guarantees the use safety of voltage stabilizer
This voltage stabilizer not only has overcurrent, excess temperature, overvoltage protection and also has smog defencive function; the security that voltage stabilizer uses can be guaranteed; make up common voltage stabilizer excess temperature sampled point to come and go and the deficiency that cannot comprehensively sample; make up this type of voltage stabilizer and hold because falling the limitation that characteristic accurately cannot carry out overcurrent protection; and make up the deficiency that output protection can not protect voltage stabilizer self; be a kind of omnibearing protected mode, the use safety of regulator products can be improved, avoid causing serious accident.
2) input and output duplicate protection, turns off the input end of voltage stabilizer, protects more thorough
Delay circuit is devised in circuit, signal after voltage stabilizer overvoltage is carried out com-parison and analysis, when after the long-time overvoltage of voltage stabilizer, delay circuit just can think that line voltage circuit abnormality that is too high or voltage stabilizer is irrecoverable, now this signal is sent into input protection control circuit, turn off voltage stabilizer input end, guarantee the use safety of voltage stabilizer; Such as when electrical network is abnormal; particularly there is the extreme cases such as disconnected phase, off zero or three-phase imbalance in some electrical network; input line voltage will be abnormal too high; far away higher than the upper limit of the nominal input voltage of voltage stabilizer; or when the pressure regulating device fault of voltage stabilizer; as carbon brush rests on the low side of the voltage-regulation of voltage stabilizer or the rising of line voltage; voltage stabilizer exports and all can protect; if but voltage stabilizer passes into high voltage for a long time; inner autotransformer can enter magnetic saturation state, and coil can damage.
By detecting the delay time of output overvoltage signal, turn off the input of voltage stabilizer, and to cross the protection of gentle smog be also that the mode of input by turning off voltage stabilizer realizes, making protection thorough, is feature of the present invention.
3) circuit design is reliable
Regulator design has two cover feed circuit, such design is mainly in order to the safe and reliable work guaranteeing smog sample circuit, according to the principle of stabilized voltage of voltage stabilizer, voltage stabilizing control the to sample output voltage of voltage stabilizer realizes, usual pressure sample circuit, controlling circuit of voltage regulation, motor-drive circuit, condition indication circuit and output protection control circuit use the first feed circuit be made up of inductive coil to power, when voltage stabilizer coil is abnormal, usually output voltage also can be made abnormal, therefore the first feed circuit can be made to occur abnormal, this circuit is not suitable for input protection control circuit and other temperature of establishing and current sampling circuit, smog sample circuit, computing and treatment circuit, delay circuit, and the second feed circuit that the transformer T2 being connected to voltage stabilizer input end is formed are not by the impact of voltage stabilizer working condition, the temperature that input protection control circuit and side are established and current sampling circuit, smog sample circuit, computing and treatment circuit, delay circuit reliable operation.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of voltage stabilizer in prior art;
Fig. 2 is a kind of structural representation of the present invention.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: referring to Fig. 2, in the present invention, output protection control circuit is other is provided with voltage sampling circuit, controlling circuit of voltage regulation, motor-drive circuit, condition indication circuit, input protection control circuit is other is provided with temperature and current sampling circuit, smog sample circuit, computing and treatment circuit, delay circuit, output protection control circuit is connected to input protection control circuit through delay circuit, the wherein output voltage of voltage sampling circuit sampling voltage stabilizer, undertaken analyzing by controlling circuit of voltage regulation and signal reached motor-drive circuit so that the no-load voltage ratio that drive motor carries out adjusting autotransformer T1 carrys out regulated output voltage, controlling circuit of voltage regulation detects output voltage simultaneously, when arriving the voltage threshold of regulation, the output terminal K switch 2 of voltage stabilizer is turned off to protect output terminal load by output protection control circuit, the output voltage signal that controlling circuit of voltage regulation detects by output protection control circuit is simultaneously transferred to input protection control circuit via delay circuit, when in time delay, output voltage continues the voltage threshold arriving regulation, then input protection control circuit turns off the K switch 1 of voltage stabilizer input end, to protect voltage stabilizer, otherwise then input protection control circuit is without the need to turning off the K switch 1 of voltage stabilizer input end, voltage stabilizer normally works, the temperature of temperature and current sampling circuit sampling autotransformer T1 coil and output current, turn off the K switch 1 of voltage stabilizer input end, to protect voltage stabilizer when excess temperature or overcurrent by computing and treatment circuit by input protection control circuit after being processed, gas sensor in smog sample circuit can select suitable installation site according to product structure, usually be arranged near voltage stabilizer internal main coil, under abnormal conditions, the coil heating of autotransformer T1, the insulation breakdown of coil, give out carbon monoxide, hydrogen or generation smog, gas sensor in smog sample circuit collects carbon monoxide, hydrogen or smog are also converted into electric signal, after signal transacting being amplified by computing and treatment circuit, the K switch 1 of voltage stabilizer input end is turned off by input protection control circuit, the coil of autotransformer T1 has cut off power supply, fault can not expand further, thus reach the object of reliably protecting.Further, output protection control circuit and the other voltage sampling circuit established, controlling circuit of voltage regulation, motor-drive circuit, the first feed circuit that condition indication circuit is made up of inductive coil are powered, the temperature that input protection control circuit and side are established and current sampling circuit, smog sample circuit, computing and treatment circuit, the second feed circuit that delay circuit is made up of the transformer T2 being connected to voltage stabilizer input end are powered, second feed circuit are not by the impact of voltage stabilizer working condition, the temperature that input protection control circuit and side are established and current sampling circuit, smog sample circuit, computing and treatment circuit, delay circuit reliable operation.
Finally, it should be pointed out that above embodiment is only the more representational example of the present invention.Obviously, the invention is not restricted to above-described embodiment, many distortion can also be had.Every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all should think and belong to protection scope of the present invention.
Claims (3)
1. the voltage stabilizer with smog sampling protection, comprise output protection control circuit and input protection control circuit, it is characterized in that described output protection control circuit is other and be provided with voltage sampling circuit, controlling circuit of voltage regulation, motor-drive circuit, condition indication circuit, described input protection control circuit is other is provided with temperature and current sampling circuit, smog sample circuit, computing and treatment circuit, delay circuit, output protection control circuit is connected to input protection control circuit through delay circuit, the wherein output voltage of voltage sampling circuit sampling voltage stabilizer, undertaken analyzing by controlling circuit of voltage regulation and signal reached motor-drive circuit so that the no-load voltage ratio that drive motor carries out adjusting autotransformer T1 carrys out regulated output voltage, controlling circuit of voltage regulation detects output voltage simultaneously, when arriving the voltage threshold of regulation, the output terminal K switch 2 of voltage stabilizer is turned off to protect output terminal load by output protection control circuit, the output voltage signal that controlling circuit of voltage regulation detects by output protection control circuit is simultaneously transferred to input protection control circuit via delay circuit, when in time delay, output voltage continues the voltage threshold arriving regulation, then input protection control circuit turns off the K switch 1 of voltage stabilizer input end, to protect voltage stabilizer, otherwise then input protection control circuit is without the need to turning off the K switch 1 of voltage stabilizer input end, voltage stabilizer normally works, the temperature of temperature and current sampling circuit sampling autotransformer T1 coil and output current, turn off the K switch 1 of voltage stabilizer input end, to protect voltage stabilizer when excess temperature or overcurrent by computing and treatment circuit by input protection control circuit after being processed, under abnormal conditions, the coil heating of autotransformer T1, the insulation breakdown of coil, give out carbon monoxide, hydrogen or produce smog, gas sensor in smog sample circuit collects carbon monoxide, hydrogen or smog and is converted into electric signal, after being amplified by signal transacting by computing and treatment circuit, turned off the K switch 1 of voltage stabilizer input end by input protection control circuit, the coil of autotransformer T1 cuts off power supply.
2. a kind of voltage stabilizer with smog sampling protection according to claim 1; it is characterized in that the first feed circuit that described output protection control circuit and other voltage sampling circuit, controlling circuit of voltage regulation, motor-drive circuit, the condition indication circuit established are made up of inductive coil are powered, the second feed circuit that described input protection control circuit and other temperature of establishing and current sampling circuit, smog sample circuit, computing and treatment circuit, delay circuit are made up of the transformer T2 being connected to voltage stabilizer input end are powered.
3. a kind of voltage stabilizer with smog sampling protection according to claim 1 and 2, is characterized in that the gas sensor in described smog sample circuit is arranged near voltage stabilizer internal main coil.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310335343.9A CN103399613B (en) | 2013-08-02 | 2013-08-02 | Novel voltage stabilizer with smoke sampling protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310335343.9A CN103399613B (en) | 2013-08-02 | 2013-08-02 | Novel voltage stabilizer with smoke sampling protection |
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| CN103399613A CN103399613A (en) | 2013-11-20 |
| CN103399613B true CN103399613B (en) | 2014-12-24 |
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| CN201310335343.9A Active CN103399613B (en) | 2013-08-02 | 2013-08-02 | Novel voltage stabilizer with smoke sampling protection |
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| CN108415495B (en) * | 2018-05-04 | 2024-01-16 | 浙江德力西电器有限公司 | AC voltage stabilizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2230941Y (en) * | 1995-01-11 | 1996-07-10 | 王世忠 | A.C. voltage stabilizer |
| JP2001186760A (en) * | 1999-12-27 | 2001-07-06 | Nec Corp | Power source unit |
| JP3903741B2 (en) * | 2001-05-31 | 2007-04-11 | 松下電工株式会社 | Photoelectric smoke detector |
| CN202285321U (en) * | 2011-10-20 | 2012-06-27 | 浙江正泰电源电器有限公司 | Output and input dual-protection system structure of alternating current voltage stabilizer |
| CN203465629U (en) * | 2013-08-02 | 2014-03-05 | 浙江正泰电源电器有限公司 | Novel voltage stabilizer with smog sampling protection function |
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Effective date of registration: 20191101 Address after: 325000 Wenzhou CHINT power supply Co., Ltd., Wenzhou economic and Technological Development Zone, Wenzhou Wenzhou economic and Technological Development Zone, Wenzhou CHINT power supply Co., Ltd. Patentee after: Wenzhou CHINT power supply Co., Ltd. Address before: 325604, No. 171 Bridge Road, Liushi Town, Wenzhou, Zhejiang, Yueqing Patentee before: Zhejiang Chint Electrical Appliance Co., Ltd. |