CN103384121A - Magnetic-saturation intrinsically-safe power supply - Google Patents
Magnetic-saturation intrinsically-safe power supply Download PDFInfo
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- CN103384121A CN103384121A CN2013102766557A CN201310276655A CN103384121A CN 103384121 A CN103384121 A CN 103384121A CN 2013102766557 A CN2013102766557 A CN 2013102766557A CN 201310276655 A CN201310276655 A CN 201310276655A CN 103384121 A CN103384121 A CN 103384121A
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Abstract
The invention provides a magnetic-saturation intrinsically-safe power supply. The power supply comprises an alternating current power supply input module, a rectifying and filter circuit module, a voltage regulating circuit module and an intrinsically-safe power supply output module which are electrically connected sequentially. The power supply is characterized by also comprising a magnetic-saturation voltage stabilizing circuit module which is electrically connected between the alternating current power supply input module and the rectifying and filter circuit module. The magnetic-saturation intrinsically-safe power supply is good in voltage output stability, wide in voltage stabilizing range, high in reliability, capable of improving the voltage stabilizing effect further so as to achieve explosion-isolation and explosion-proof effects and particularly suitable for power supply to electrical devices in hazardous environments with explosive or flammable gases, steam, liquids and the like.
Description
Technical field
The present invention relates to a kind of supply unit, relate in particular to a kind of magnetic saturation intrinsic safety electric source, specifically be applicable to powering with the electric equipment in explosive gas atmosphere.
Background technology
Intrinsic safety electric source is intrinsically safe power supply, refer under normal operation and extreme malfunction, the ceiling voltage of its output, maximum current all have the power supply of intrinsic safety performance, all can not light the explosive gas atmosphere of regulation and the intrinsic safety performance refers to any electric spark or any thermal effect that safety power supply circuit in essence produces under the condition of standard code, play vital effect in the equipment such as communication, monitoring, warning and the hazard prediction that uses in hazardous environments such as explosivity or imflammable gas, steam, liquid at colliery, oil, chemical industry etc. and control.The mentality of designing of intrinsic safety electric source is to process the power supply make output and can not suddenly change with the moment of input voltage and consequently affect the electric equipment of rear end by input power being done voltage stabilizing, what existing intrinsic safety electric source was most is the direct current section of rear end to be done voltage stabilizing process, but can produce extremely strong pulse when the front end civil power during from 110 ~ 260V saltus step, pulse again by the one-level one-level amplification have a strong impact on the control circuit of rear end, and then increase the live load of rear end voltage stabilizing circuit, therefore, the voltage regulation result of existing intrinsic safety electric source is still waiting further raising.
Summary of the invention
In order to solve the deficiency in background technology, the object of the invention is to overcome the defective of background technology, a kind of magnetic saturation intrinsic safety electric source is provided, the output voltage stabilization degree is high, and voltage stabilized range is wide, can further improve voltage regulation result.
For achieving the above object, the technical solution used in the present invention is: a kind of magnetic saturation intrinsic safety electric source, comprise the AC power input module, current rectifying and wave filtering circuit module, voltage regulator circuit module, the intrinsic safety electric source output module that are electrically connected successively, wherein,
The AC power input module for the input interface that connects AC mains, provides elementary AC power input for described intrinsic safety electric source;
The current rectifying and wave filtering circuit module is used for the elementary AC rectification that the AC power input module is exported is filtered into direct current output;
The voltage regulator circuit module is used for the direct current after rectifying and wave-filtering being done voltage-regulation, the DC power supply of stable output;
The intrinsic safety electric source output module is for the DC power supply of output essential safety;
It is characterized in that: described intrinsic safety electric source also comprises the magnetic saturation voltage stabilizing circuit module of electrical connection between described AC power input module and current rectifying and wave filtering circuit module, described magnetic saturation voltage stabilizing circuit module, utilize the principle of magnetic flux saturation limit energy to do voltage-regulation, the AC power of stable output to the AC power of input.
Preferably, described magnetic saturation transforming circuit module comprises a magnetic saturation transformer, described magnetic saturation transformer comprises a two ends cross-sectional area annular core that does not wait and the saturation coil that is wrapped on described iron core, described iron core comprises a thick section and a thin section, wherein, described thin section first reaches capacity under identical ascending magnetic field excitation.
Preferably, be wound with elementary input coil in described thick section, the two ends of described elementary input coil are connected with the output of described AC power input module, are wound with secondary output winding in described thin section, and the two ends of described secondary output winding are connected with the input of described current rectifying and wave filtering circuit.
Preferably, the output of a described secondary output winding resonant capacitor in parallel also.
Preferably, described intrinsic safety electric source also comprises the safety barrier circuit protection module of electrical connection between described voltage regulator circuit module and intrinsic safety electric source output module.
Preferably, described safety barrier circuit protection module comprises a resistor, Zener diode, fuse, described resistor and fuse series connection, and both Nodes described Zener diode in parallel.
usefulness of the present invention is: a kind of magnetic saturation intrinsic safety electric source of the present invention, increase magnetic saturation transforming circuit module in the rear end of AC power input module, utilize magnetic saturation and the low-pass characteristic of magnetic saturation transformer, and the nonlinear characteristic of utilizing the magnetization curve of iron core, when intrinsic safety electric source is worked, increase along with supply voltage, in iron core, magnetic flux also increases thereupon, when in secondary iron core, magnetic flux reaches saturation point, just can not increase with the increase of supply voltage, the output voltage that makes secondary coil produce is substantially constant, can not change with the change of input voltage, play the effect of voltage stabilizing.Therefore, the output voltage stabilization degree of magnetic saturation intrinsic safety electric source of the present invention is high, and voltage stabilized range is wide, can further improve voltage regulation result.
Figure of description
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of a kind of magnetic saturation intrinsic safety electric source of the present invention.
In figure: 10, AC power input module, 20, the current rectifying and wave filtering circuit module, 30, the voltage regulator circuit module; 40, intrinsic safety electric source output module, 50, the magnetic saturation voltage stabilizing circuit module, 52, the magnetic saturation transformer; 54, thick section, 56, thin section, 60, the safety barrier circuit protection module; T, iron core, Z, saturation coil, Z1, elementary input coil; Z2, secondary output winding, C, resonant capacitor, R, resistor; D, Zener diode, F, fuse.
Embodiment
In order to make those skilled in the art person understand better the present invention program, and above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with embodiment and embodiment accompanying drawing.
As shown in Figure 1, a kind of magnetic saturation intrinsic safety electric source comprises the AC power input module 10, current rectifying and wave filtering circuit module 20, voltage regulator circuit module 30, the intrinsic safety electric source output module 40 that are electrically connected successively, wherein,
The AC power input module for the input interface that connects AC mains, provides elementary AC power input for described intrinsic safety electric source;
The current rectifying and wave filtering circuit module is used for the elementary AC rectification that the AC power input module is exported is filtered into direct current output;
The voltage regulator circuit module is used for the direct current after rectifying and wave-filtering being done voltage-regulation, the DC power supply of stable output;
The intrinsic safety electric source output module is for the DC power supply of output essential safety;
It also comprises the magnetic saturation voltage stabilizing circuit module 50 of electrical connection between AC power input module 10 and current rectifying and wave filtering circuit module 20, described magnetic saturation voltage stabilizing circuit module 50, utilize the principle of magnetic flux saturation limit energy to do voltage-regulation, the AC power of stable output to the AC power of input.Wherein, described AC power input module 10, current rectifying and wave filtering circuit module 20, voltage regulator circuit module 30, intrinsic safety electric source output module 40 all adopt circuit module commonly used in present power technology just can realize.The city obtains stable intrinsic safety DC power supply output through conversion, rectifying and wave-filtering, voltage-regulation, over-current over-voltage protection successively with 110 ~ 260V alternating current; electric equipment to the intrinsic safety district provides intrinsic safety electric source; circuit charge-discharge energy under the restriction extreme case starts with to realize flame proof, explosion-proof; the Voltage-output good stability, reliability is high.
concrete, magnetic saturation transforming circuit module 50 comprises a magnetic saturation transformer 52, and magnetic saturation transformer 52 comprises a two ends cross-sectional area annular core T that does not wait and the saturation coil Z that is wrapped on iron core T, described iron core comprises a thick section 54 and a thin section 56, wherein, thin section 56 first reaches capacity than thick section 54 under identical ascending magnetic field excitation, be wound with elementary input coil Z1 in thick section 54, the two ends of elementary input coil Z1 are connected with the output of AC power input module 10, be wound with secondary output winding Z2 in thin section 56, the two ends of secondary output winding Z2 are connected with the input of current rectifying and wave filtering circuit 20, the sectional area of the elementary input coil Z1 that is wound around in thick section 54 is large, be the unsaturation coil, the sectional area of the secondary output winding Z2 that is wound around in thin section 56 is little, be saturable inductor, when intrinsic safety electric source is worked, increase along with supply voltage, the interior magnetic flux of iron core T also increases thereupon, secondary output winding Z2 first reaches saturation point than elementary input coil Z1 because sectional area is little, at this moment, increasing again of supply voltage can not cause the variation of secondary flux, so the output voltage that secondary output winding Z2 produces is substantially constant, thereby reach the effect of voltage stabilizing.Through test repeatedly, in the situation that nominal load, when input voltage rated value ± when changing in 20% scope, the output voltage precision of voltage regulation can be limited in ± 1% scope in.
Simultaneously, also draw the stability range conclusion relevant with load of magnetic saturation transformer 52 through test many times, when output load reduced, stability range can correspondingly be widened, and therefore, intrinsic safety electric source voltage stability of the present invention is high, and voltage stabilized range is wide.
Further, at the output of a secondary output winding Z2 resonant capacitor C in parallel also, secondary output winding Z2 and resonant capacitor C form a simple LC parallel oscillation loop, when frequency of oscillation during at 50Hz, make 52 outputs of magnetic saturation transformer be perception, improve the AC voltage regulator output power factor, simultaneously, can accelerate the speed that saturable inductor reaches capacity.
Described intrinsic safety electric source also comprises the safety barrier circuit protection module 40 of electrical connection between voltage regulator circuit module 30 and intrinsic safety electric source output module 40; concrete; safety barrier circuit protection module 40 comprises a resistor R, Zener diode D, fuse F; resistor R and fuse F series connection, and both Nodes parallel diode D.The resistor R that possesses certain power bearing ability is used for current limliting, and Zener diode D is used for pressure limiting, and safety barrier circuit protection module 40 has the function of current limiting pressure-limiting protection, makes the electric current and voltage that exports the intrinsic safety side to all the time in the scope of a permission.
The operation principle of safety barrier circuit protection module 40 is: when voltage is normal, and Zener diode D cut-off, loop current is determined by voltage regulator circuit module 30; During accident, the existence of resistor R below safe rated current, is guaranteed safety to short-circuit current limitation if the scene is short-circuited; If the grid terminal voltage of Zener diode D is during higher than safe rated voltage, the breakdown conducting of Zener diode D increases the electric current that flows through fuse F; when reaching certain value; fuse F is fused, and is disconnected with on-the-spot isolation the high pressure that may cause the accident immediately, plays the effect of insulation blocking.
Above-described embodiment is the better execution mode of the present invention; but embodiments of the present invention are not limited by the examples; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify the substitute mode that all should be equivalence, within being included in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range that claim was defined.
Claims (6)
1. a magnetic saturation intrinsic safety electric source, comprise the AC power input module, current rectifying and wave filtering circuit module, voltage regulator circuit module, the intrinsic safety electric source output module that are electrically connected successively, wherein,
The AC power input module for the input interface that connects AC mains, provides elementary AC power input for described intrinsic safety electric source;
The current rectifying and wave filtering circuit module is used for the elementary AC rectification that the AC power input module is exported is filtered into direct current output;
The voltage regulator circuit module is used for the direct current after rectifying and wave-filtering being done voltage-regulation, the DC power supply of stable output;
The intrinsic safety electric source output module is for the DC power supply of output essential safety;
It is characterized in that: described intrinsic safety electric source also comprises the magnetic saturation voltage stabilizing circuit module of electrical connection between described AC power input module and current rectifying and wave filtering circuit module, described magnetic saturation voltage stabilizing circuit module, utilize the principle of magnetic flux saturation limit energy to do voltage-regulation, the AC power of stable output to the AC power of input.
2. a kind of magnetic saturation intrinsic safety electric source according to claim 1, it is characterized in that: described magnetic saturation transforming circuit module comprises a magnetic saturation transformer, described magnetic saturation transformer comprises a two ends cross-sectional area annular core that does not wait and the saturation coil that is wrapped on described iron core, described iron core comprises a thick section and a thin section, wherein, described thin section first reaches capacity under identical ascending magnetic field excitation.
3. a kind of magnetic saturation intrinsic safety electric source according to claim 2, it is characterized in that: be wound with elementary input coil in described thick section, the two ends of described elementary input coil are connected with the output of described AC power input module, be wound with secondary output winding in described thin section, the two ends of described secondary output winding are connected with the input of described current rectifying and wave filtering circuit.
4. a kind of magnetic saturation intrinsic safety electric source according to claim 3, it is characterized in that: the output of described secondary output winding is a resonant capacitor in parallel also.
5. a kind of magnetic saturation intrinsic safety electric source according to claim 1 is characterized in that: described intrinsic safety electric source also comprises the safety barrier circuit protection module of electrical connection between described voltage regulator circuit module and intrinsic safety electric source output module.
6. a kind of magnetic saturation intrinsic safety electric source according to claim 5; it is characterized in that: described safety barrier circuit protection module comprises a resistor, Zener diode, fuse; described resistor and fuse series connection, and both Nodes described Zener diode in parallel.
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| CN2013102766557A CN103384121A (en) | 2013-07-03 | 2013-07-03 | Magnetic-saturation intrinsically-safe power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207144A (en) * | 2015-09-29 | 2015-12-30 | 哈尔滨东方报警设备开发有限公司 | Plugging type intrinsic safety wiring module |
| CN111181454A (en) * | 2019-12-05 | 2020-05-19 | 陕西航空电气有限责任公司 | Wide output range's frequency conversion alternator controller power supply circuit |
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| CN87208651U (en) * | 1987-06-02 | 1988-03-23 | 杨彦昌 | Magnetic saturation ac voltage-stabilizing electric source |
| CN200997526Y (en) * | 2006-07-31 | 2007-12-26 | 天津开发区博泰自动控制技术有限公司 | Zener safty grid |
| CN201188584Y (en) * | 2008-05-05 | 2009-01-28 | 煤炭科学研究总院重庆研究院 | Large-capacity essential safety power supply for coal mine |
| CN201422029Y (en) * | 2009-04-29 | 2010-03-10 | 济源市华宇矿业电器有限公司 | Intelligent explosion-proof and intrinsically safe type direct current power supply |
| CN201887448U (en) * | 2010-12-18 | 2011-06-29 | 陆伟庆 | Isolating safety barrier |
| CN102437767A (en) * | 2011-12-22 | 2012-05-02 | 广州金升阳科技有限公司 | Self-excitation push-pull type converter |
| CN102436907A (en) * | 2011-12-22 | 2012-05-02 | 广州金升阳科技有限公司 | Magnetic core for transformer |
| CN102710151A (en) * | 2012-06-07 | 2012-10-03 | 湘煤立达矿山装备股份有限公司 | Inherent safety switch power supply for mine |
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2013
- 2013-07-03 CN CN2013102766557A patent/CN103384121A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87208651U (en) * | 1987-06-02 | 1988-03-23 | 杨彦昌 | Magnetic saturation ac voltage-stabilizing electric source |
| CN200997526Y (en) * | 2006-07-31 | 2007-12-26 | 天津开发区博泰自动控制技术有限公司 | Zener safty grid |
| CN201188584Y (en) * | 2008-05-05 | 2009-01-28 | 煤炭科学研究总院重庆研究院 | Large-capacity essential safety power supply for coal mine |
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| CN201887448U (en) * | 2010-12-18 | 2011-06-29 | 陆伟庆 | Isolating safety barrier |
| CN102437767A (en) * | 2011-12-22 | 2012-05-02 | 广州金升阳科技有限公司 | Self-excitation push-pull type converter |
| CN102436907A (en) * | 2011-12-22 | 2012-05-02 | 广州金升阳科技有限公司 | Magnetic core for transformer |
| CN102710151A (en) * | 2012-06-07 | 2012-10-03 | 湘煤立达矿山装备股份有限公司 | Inherent safety switch power supply for mine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207144A (en) * | 2015-09-29 | 2015-12-30 | 哈尔滨东方报警设备开发有限公司 | Plugging type intrinsic safety wiring module |
| CN111181454A (en) * | 2019-12-05 | 2020-05-19 | 陕西航空电气有限责任公司 | Wide output range's frequency conversion alternator controller power supply circuit |
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Application publication date: 20131106 |