CN202586779U - Mine intrinsic safety switching power supply - Google Patents
Mine intrinsic safety switching power supply Download PDFInfo
- Publication number
- CN202586779U CN202586779U CN 201220267700 CN201220267700U CN202586779U CN 202586779 U CN202586779 U CN 202586779U CN 201220267700 CN201220267700 CN 201220267700 CN 201220267700 U CN201220267700 U CN 201220267700U CN 202586779 U CN202586779 U CN 202586779U
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- CN
- China
- Prior art keywords
- power supply
- intrinsic safety
- switching power
- switch transformer
- safety switching
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a mine intrinsic safety switching power supply. The utility model aims at providing a mine intrinsic safety switching power supply. The mine intrinsic safety switching power supply disclosed by the utility model comprises a switch transformer and is characterized in that one end of the switch transformer is connected with an input filter circuit by virtue of a full-bridge rectification circuit, the other end of the switch transformer is connected with a switching tube by virtue of an output rectification filter circuit and a voltage-stabilizing current-limiting control circuit, and the switch transformer is also directly connected with the switching tube. The mine intrinsic safety switching power supply is mainly applied to an environment of explosive gases such as coal mine underground gas.
Description
Technical field
The utility model relates to a kind of Switching Power Supply, relates 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 utility model 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 purpose of the utility model is to provide a kind of mining intrinsic safety type Switching Power Supply, to address the above problem.
For realizing above-mentioned purpose; The technical solution of the utility model 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 beneficial effect of the utility model is: mining intrinsic safety type Switching Power Supply advantages of small volume, and 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 the structural representation block diagram of the utility model.
Fig. 2 is the electrical schematic diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model and embodiment thereof are done further explain.
Referring to Fig. 1-2; The utility model comprises 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 utility model 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 |
|---|---|---|---|
| CN 201220267700 CN202586779U (en) | 2012-06-07 | 2012-06-07 | Mine intrinsic safety switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220267700 CN202586779U (en) | 2012-06-07 | 2012-06-07 | Mine intrinsic safety switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586779U true CN202586779U (en) | 2012-12-05 |
Family
ID=47256141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220267700 Expired - Fee Related CN202586779U (en) | 2012-06-07 | 2012-06-07 | Mine intrinsic safety switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202586779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-06-07 CN CN 201220267700 patent/CN202586779U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20170607 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |