CN102710151A - Inherent safety switch power supply for mine - Google Patents
Inherent safety switch power supply for mine Download PDFInfo
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- CN102710151A CN102710151A CN2012101855525A CN201210185552A CN102710151A CN 102710151 A CN102710151 A CN 102710151A CN 2012101855525 A CN2012101855525 A CN 2012101855525A CN 201210185552 A CN201210185552 A CN 201210185552A CN 102710151 A CN102710151 A CN 102710151A
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- power supply
- switch
- switch transformer
- mine
- switch power
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Abstract
The invention discloses an inherent safety switch power supply for mine. The switch power supply comprises a switch transformer and is characterized in that one end of the switch transformer is connected with an input filter circuit via a full-bridge rectifying circuit, and the other end of the switch transformer is connected with a switch tube via an output rectifying filter circuit and a voltage stabilizing current limiting control circuit; and the switch transformer is directly connected with the switch tube. The inherent safety switch power supply disclosed by the invention is mainly used in a coal mine firedamp environment and other explosive gases environments.
Description
Technical field
The present invention relates to a kind of Switching Power Supply, relate in particular to a kind of mining intrinsic safety type Switching Power Supply.
Background technology
Existing mining intrinsic safety type DC power supply adopts the DC voltage-stabilizing mode mostly, and promptly through the rectifier transformer step-down, process rectifier bridge rectifying and wave-filtering is after the direct voltage that voltage-stabiliser tube output needs again.This equipment power dissipation is big, efficient is low, and equipment volume is huge, quality is very heavy, installs and uses pretty troublesomely, and protection is protected for single channel.The mining intrinsic safety type Switching Power Supply advantages of small volume that the present invention relates to, power consumption is little, and efficient is high, and is easy for installation, and be designed to bistable pressure, two overcurrent protection.
Summary of the invention
The object of the present invention is to provide a kind of mining intrinsic safety type Switching Power Supply, to address the above problem.
For realizing above-mentioned purpose; Technical solution of the present invention is: a kind of mining intrinsic safety type Switching Power Supply; Comprise switch transformer; It is characterized in that: an end of described switch transformer links to each other with input filter circuit through full bridge rectifier, and the other end links to each other with switching tube through output rectifier and filter, voltage stabilizing current-limiting control circuit, and switch transformer also directly links to each other with switching tube.
The invention has the beneficial effects as follows: mining intrinsic safety type Switching Power Supply advantages of small volume, power consumption is little, and efficient is high, and is easy for installation, and be designed to bistable pressure, two overcurrent protection.
Description of drawings
Fig. 1 is a structural representation block diagram of the present invention.
Fig. 2 is an electrical schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention and embodiment thereof are done further explain.
Referring to Fig. 1-2; The present invention includes switch transformer; It is characterized in that: an end of described switch transformer links to each other with input filter circuit through full bridge rectifier; The other end links to each other with switching tube through output rectifier and filter, voltage stabilizing current-limiting control circuit, and switch transformer also directly links to each other with switching tube.
The present invention is made up of input filter circuit, full bridge rectifier, switch transformer, switching tube, voltage stabilizing current-limiting control circuit, output rectifier and filter; Input AC 127V or 220V power supply; Be output as the two-way intrinsic safety electric source, the one tunnel is+6V/0.8A, and one the tunnel is+12V/0.4A.Exchange 127V or 220V power supply and receive input filter circuit, input filter circuit is made up of F1, RT1, C1, C2, L1.Wherein C1, C2 are safety electric capacity, and L1 is a common mode inductance.Input filter circuit connects full bridge rectifier, and full bridge rectifier is made up of V1, V2, V3, V4 and C3.V1, V2, V3, V4 form full-bridge rectification, and C3 is a filter capacitor.Full bridge rectifier output is added to switch transformer primary coil one end, and another termination switch triode collector electrode of switch transformer primary coil is through the conducting and the shutoff of control switch triode, at the corresponding voltage output signal of the secondary formation of switch transformer.This voltage signal forms galvanic current and presses output behind output rectifier and filter.Output rectifier and filter is made up of V9, V13, C10-C13, C22-C25, L2, L3 and peripheral cell.Wherein V9, V13 form halfwave rectifier, and C10-C13, C22-C25, L2, L3 form the CLC filter circuit.The voltage stabilizing current-limiting control circuit is the core control circuit of this intrinsic safety electric source, is made up of V33, V34, V35, V36 and peripheral cell.With one group be example, V11 is a 2.5V a reference source, R10, V33 and V11 are composed in series voltage detecting circuit, when output voltage is higher than set point, the V11 conducting, the conducting of V33 level, adjustment switching tube duty ratio makes output voltage stabilization; R17, R18, V33 form current-limiting circuit, and when electric current surpassed set point, the pressure drop at R17, R18 two ends increased, and makes the V25 conducting, and V33 level conducting adjustment switching tube duty ratio makes outputting current steadily.
Claims (1)
1. mining intrinsic safety type Switching Power Supply; Comprise switch transformer; It is characterized in that: an end of described switch transformer links to each other with input filter circuit through full bridge rectifier; The other end links to each other with switching tube through output rectifier and filter, voltage stabilizing current-limiting control circuit, and switch transformer also directly links to each other with switching tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101855525A CN102710151A (en) | 2012-06-07 | 2012-06-07 | Inherent safety switch power supply for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101855525A CN102710151A (en) | 2012-06-07 | 2012-06-07 | Inherent safety switch power supply for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102710151A true CN102710151A (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101855525A Pending CN102710151A (en) | 2012-06-07 | 2012-06-07 | Inherent safety switch power supply for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102710151A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849441A (en) * | 2012-08-03 | 2013-01-02 | 新乡市振源机械设备有限责任公司 | Dynamic-weighing quantitative belt feeder |
| CN103384121A (en) * | 2013-07-03 | 2013-11-06 | 苏州倍加福防爆电气有限公司 | Magnetic-saturation intrinsically-safe power supply |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572478A (en) * | 2009-06-09 | 2009-11-04 | 上海三基电子工业有限公司 | Switching power supply with intrinsic safety module |
| CN101635523A (en) * | 2009-05-26 | 2010-01-27 | 山西晋城无烟煤矿业集团有限责任公司 | External mining intrinsic safety power supply |
| CN201418038Y (en) * | 2009-05-26 | 2010-03-03 | 山西晋城无烟煤矿业集团有限责任公司 | External intrinsic safety power supply for mining use |
| CN102013730A (en) * | 2010-12-04 | 2011-04-13 | 山西科达自控工程技术有限公司 | Underground intelligent intrinsic safety type power supply network |
| CN202586779U (en) * | 2012-06-07 | 2012-12-05 | 湘煤立达矿山装备股份有限公司 | Mine intrinsic safety switching power supply |
-
2012
- 2012-06-07 CN CN2012101855525A patent/CN102710151A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635523A (en) * | 2009-05-26 | 2010-01-27 | 山西晋城无烟煤矿业集团有限责任公司 | External mining intrinsic safety power supply |
| CN201418038Y (en) * | 2009-05-26 | 2010-03-03 | 山西晋城无烟煤矿业集团有限责任公司 | External intrinsic safety power supply for mining use |
| CN101572478A (en) * | 2009-06-09 | 2009-11-04 | 上海三基电子工业有限公司 | Switching power supply with intrinsic safety module |
| CN102013730A (en) * | 2010-12-04 | 2011-04-13 | 山西科达自控工程技术有限公司 | Underground intelligent intrinsic safety type power supply network |
| CN202586779U (en) * | 2012-06-07 | 2012-12-05 | 湘煤立达矿山装备股份有限公司 | Mine intrinsic safety switching power supply |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849441A (en) * | 2012-08-03 | 2013-01-02 | 新乡市振源机械设备有限责任公司 | Dynamic-weighing quantitative belt feeder |
| CN103384121A (en) * | 2013-07-03 | 2013-11-06 | 苏州倍加福防爆电气有限公司 | Magnetic-saturation intrinsically-safe power supply |
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Application publication date: 20121003 |