CN101635523A - External mining intrinsic safety power supply - Google Patents
External mining intrinsic safety power supply Download PDFInfo
- Publication number
- CN101635523A CN101635523A CN200910074483A CN200910074483A CN101635523A CN 101635523 A CN101635523 A CN 101635523A CN 200910074483 A CN200910074483 A CN 200910074483A CN 200910074483 A CN200910074483 A CN 200910074483A CN 101635523 A CN101635523 A CN 101635523A
- Authority
- CN
- China
- Prior art keywords
- power supply
- output
- intrinsic safety
- resistance
- electric capacity
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Rectifiers (AREA)
Abstract
The invention relates to a mining intrinsic safety power supply, in particular to an external mining intrinsic safety power supply, aiming at solving the problems that the existing external mining intrinsic safety power supply has overhigh internal energy consumption, low efficiency and overlarge volume. The external mining intrinsic safety power supply comprises a first inductor and an EMI filter formed by a first, a second, a third and a fourth capacitors, wherein an input end of the EMI filter is connected with an AC input end of the external mining intrinsic safety power supply, and an output end thereof is connected with a rectifier bridge. The external mining intrinsic safety power supply has simple structure and ingenious design, and can effectively solve the problems that the existing external mining intrinsic safety power supply has overhigh internal energy consumption, low efficiency and overlarge volume by the improvement of structure.
Description
Technical field
The present invention relates to mine intrinsic safety electric source, specifically is a kind of external mining intrinsic safety power supply.
Background technology
Intrinsic safety electric source is the essential safety power supply, is meant that under operate as normal and malfunction, the ceiling voltage of its output, maximum current all have the power supply of intrinsic safety performance.And referring to any electric spark or any thermal effect that the essential safety power circuit produces under the condition of standard code, the intrinsic safety performance all can not light the explosive gas atmosphere of regulation.Mine intrinsic safety electric source can be divided into stand alone type and two kinds of fundamental types of circumscribed, stand alone type is the most frequently used in the mine intrinsic safety electric source to be dry cell and storage battery, be used for portable instrument and meter more, external mining intrinsic safety power supply is to be introduced and through the DC power supply of transformer-supplied by low-voltage-powered electrical network under the coal mine, is mainly used in as communication, signal, monitoring, fixed intrinsic safety type electric equipment such as control and various transducers automatically.Because the defective of structural design, the inner power consumption of existing mine intrinsic safety electric source ubiquity is excessive, inefficiency and the excessive problem of volume, thereby is necessary to invent a kind of mine intrinsic safety electric source that can overcome the problems referred to above.
Summary of the invention
The inner power consumption of existing external mining intrinsic safety power supply is excessive in order to solve in the present invention, inefficiency and the excessive problem of volume, and a kind of external mining intrinsic safety power supply is provided.
The present invention adopts following technical scheme to realize: external mining intrinsic safety power supply, comprise the electromagnetic interface filter that constitutes by first inductor, first electric capacity-the 4th electric capacity, the input of electromagnetic interface filter links to each other with the ac input end of external mining intrinsic safety power supply, and the output of electromagnetic interface filter is connected with rectifier bridge; The positive pole of the dc output end of rectifier bridge is connected with high frequency transformer; The first secondary winding two ends of high frequency transformer are parallel with output rectifier and filter, output rectifier and filter comprises the LC postfilter that is made of second inductor, the 13 electric capacity, and the output of output rectifier and filter links to each other with the dc output end of external mining intrinsic safety power supply; The input of LC postfilter is connected with the feedback circuit that comprises Switching Power Supply, photoelectrical coupler, three-terminal voltage-stabilizing pipe, the positive and negative electrode of the input of photoelectrical coupler links to each other with the input of LC postfilter by the 7th resistance, the 8th resistance respectively, and the control end of three-terminal voltage-stabilizing pipe links to each other with the negative pole of the input of photoelectrical coupler; The output of output rectifier and filter is connected with the bleeder circuit that is formed by the 12 resistance, the 11 resistance, potentiometer, the tenth resistance serial connection, and the connected node between potentiometer and the tenth resistance connects the sampling end of three-terminal voltage-stabilizing pipe; The positive pole of the output of photoelectrical coupler links to each other with second secondary coil of high frequency transformer by the current rectifying and wave filtering circuit that is made of the 7th diode, the 14 electric capacity, and the negative pole of the output of photoelectrical coupler links to each other with the control end of Switching Power Supply; The multi-function terminal of Switching Power Supply links to each other with the positive pole of the dc output end of rectifier bridge by the 3rd resistance.
During work, alternating current elder generation input rectifying bridge after electromagnetic interface filter is eliminated common mode disturbances and differential mode interference by the electrical network introducing, become Rectified alternating current after the rectifier bridge rectification, this Rectified alternating current is converted into constant direct current output with the Rectified alternating current that the multi-function terminal of Switching Power Supply sends through high frequency transformer, output rectifier and filter; The feedback circuit that is connected in the output of output rectifier and filter plays overvoltage (or under-voltage) protective effect; promptly when the direct voltage of the output of output rectifier and filter changes; the voltage rising (or reduction) of the sampling end of three terminal regulator; and then make the conducting degree of three terminal regulator strengthen (or weakening); the voltage of the control end of three terminal regulator reduces (or rising); the electric current that flows through the light-emitting diode in the photoelectrical coupler increases (or reducing); thereby the phototriode conducting degree in the photoelectrical coupler that makes strengthens (or weakening); the electric current of the phototriode in the feasible photoelectrical coupler of flowing through increases (or reducing); the voltage of the control end of Switching Power Supply also increases (or reduction); thereby the duty ratio that makes the Rectified alternating current of Switching Power Supply output reduces (or increase) thereupon, thereby makes the voltage of rectifier bridge dc output end keep stable.And when the output of output rectifier and filter is short-circuited; do not have electric current to pass through in the feedback circuit,, make that promptly entire circuit is in blocking state so the duty ratio of the Rectified alternating current of Switching Power Supply output is zero; thereby play the effect of output short circuit protection, eliminate up to fault.
Further, be connected with the tenth electric capacity between the end of the same name of the former limit winding of high frequency transformer and the first secondary winding, play the jamproof effect of isolating.
Consider the needs that consume the ripple in the output voltage, output rectifier and filter also comprises the branch road that is formed by the 6th diode, the 11 electric capacity, the 12 electric capacity, the 6th resistance, the 9th electric capacity hybrid junction.
In addition, be connected with the 9th resistance, the 16 electric capacity between the sampling end of three-terminal voltage-stabilizing pipe and the control end, three-terminal voltage-stabilizing pipe U3 is formed compensation.
The present invention is simple in structure, design is ingenious, by structural improvement, efficiently solves that the inner power consumption of existing external mining intrinsic safety power supply is excessive, inefficiency and the excessive problem of volume.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
External mining intrinsic safety power supply, comprise the electromagnetic interface filter that constitutes by the first inductor L1, first electric capacity-the 4th capacitor C 1-C4, the input of electromagnetic interface filter links to each other with the ac input end of external mining intrinsic safety power supply, and the output of electromagnetic interface filter is connected with rectifier bridge VD1; The positive pole of the dc output end of rectifier bridge VD1 is connected with high frequency transformer; The first secondary winding TB two ends of high frequency transformer are parallel with output rectifier and filter, output rectifier and filter comprises the LC postfilter that is made of the second inductor L2, the 13 capacitor C 13, and the output of output rectifier and filter links to each other with the dc output end of external mining intrinsic safety power supply; The input of LC postfilter is connected with the feedback circuit that comprises Switching Power Supply U1, photoelectrical coupler U2, three-terminal voltage-stabilizing pipe U3, the positive and negative electrode of the input of photoelectrical coupler U2 links to each other with the input of LC postfilter by the 7th resistance R 7, the 8th resistance R 8 respectively, and the control end of three-terminal voltage-stabilizing pipe U3 links to each other with the negative pole of the input of photoelectrical coupler U2; The output of output rectifier and filter is connected with the bleeder circuit that is formed by the 12 resistance R the 12, the 11 resistance R 11, potentiometer R13, the tenth resistance R 10 serial connections, and the connected node between potentiometer R13 and the tenth resistance R 10 connects the sampling end of three-terminal voltage-stabilizing pipe U3; The positive pole of the output of photoelectrical coupler U2 links to each other with the second secondary coil TC of high frequency transformer by the current rectifying and wave filtering circuit that is made of the 7th diode VD7, the 14 capacitor C 14, and the negative pole of the output of photoelectrical coupler U2 links to each other with the control end of Switching Power Supply U1; The multi-function terminal of Switching Power Supply U1 links to each other with the positive pole of the dc output end of rectifier bridge VD1 by the 3rd resistance R 3; Be connected with the tenth capacitor C 10 between the former limit winding TA of high frequency transformer and the end of the same name of the first secondary winding TB; Output rectifier and filter also comprises the branch road that is formed by the 6th diode VD6, the 11 capacitor C the 11, the 12 capacitor C 12, the 6th resistance R 6, the 9th capacitor C 9 hybrid junctions, and the effect of this branch road is that the 6th diode VD6 is absorbed protection; Be connected with the 9th resistance R the 9, the 16 capacitor C 16 between the sampling end of three-terminal voltage-stabilizing pipe U3 and the control end, mainly play the effect of filtering.
During concrete enforcement, the ac input end of external mining intrinsic safety power supply is parallel with piezo-resistance VSR and is connected with fuse Fu, is used to prevent as thunderbolt, voltge surge power supply is produced harm; Be parallel with first resistance R 1, the 5th capacitor C 5, the five capacitor C 5 between the dc output end of rectifier bridge and be used for the output of stable DC voltage, 1 of first resistance R provides discharge loop for the 5th capacitor C 5; Be connected with the 15 capacitor C 15 between the control end of three-terminal voltage-stabilizing pipe U3 and the earth terminal, mainly play the effect of soft start; Being connected with the 5th resistance R 5, the 8th capacitor C the 8, the 18 capacitor C 18, the five resistance R 5, the 8th capacitor C the 8, the 18 capacitor C 18 between the source electrode output of Switching Power Supply U1 and the control end has determined the former limit compensation of Switching Power Supply and has restarted frequency automatically; The drain electrode output of Switching Power Supply U1 links to each other with the positive pole of the dc output end of rectifier bridge VD1 by the RCD clamp circuit that is made of the 5th rectifier diode VD5, second resistance R 2, the 6th capacitor C 6, the RCD clamp circuit is used to eliminate the peak voltage that produces when external mining intrinsic safety power supply turn-offs, and prevents from Switching Power Supply is caused damage; The source electrode output of Switching Power Supply U1 links to each other with the frequency end, and promptly Switching Power Supply is selected the switching frequency of 132KHz.
Claims (5)
1, a kind of external mining intrinsic safety power supply, comprise the electromagnetic interface filter that constitutes by first inductor (L1), first electric capacity-the 4th electric capacity (C1-C4), the input of electromagnetic interface filter links to each other with the ac input end of external mining intrinsic safety power supply, and the output of electromagnetic interface filter is connected with rectifier bridge (VD1);
It is characterized in that: the positive pole of the dc output end of rectifier bridge (VD1) is connected with high frequency transformer; First secondary winding (TB) two ends of high frequency transformer are parallel with output rectifier and filter, output rectifier and filter comprises the LC postfilter that is made of second inductor (L2), the 13 electric capacity (C13), and the output of output rectifier and filter links to each other with the dc output end of external mining intrinsic safety power supply;
The input of LC postfilter is connected with the feedback circuit that comprises Switching Power Supply (U1), photoelectrical coupler (U2), three-terminal voltage-stabilizing pipe (U3), the positive and negative electrode of the input of photoelectrical coupler (U2) links to each other with the input of LC postfilter by the 7th resistance (R7), the 8th resistance (R8) respectively, and the control end of three-terminal voltage-stabilizing pipe (U3) links to each other with the negative pole of the input of photoelectrical coupler (U2);
The output of output rectifier and filter is connected with the bleeder circuit that is formed by the 12 resistance (R12), the 11 resistance (R11), potentiometer (R13), the tenth resistance (R10) serial connection, and the connected node between potentiometer (R13) and the tenth resistance (R10) connects the sampling end of three-terminal voltage-stabilizing pipe (U3);
The positive pole of the output of photoelectrical coupler (U2) links to each other with second secondary coil (TC) of high frequency transformer by the current rectifying and wave filtering circuit that is made of the 7th diode (VD7), the 14 electric capacity (C14), and the negative pole of the output of photoelectrical coupler (U2) links to each other with the control end of Switching Power Supply (U1); The multi-function terminal of Switching Power Supply (U1) links to each other with the positive pole of the dc output end of rectifier bridge (VD1) by the 3rd resistance (R3).
2, external mining intrinsic safety power supply according to claim 1 is characterized in that: be connected with the tenth electric capacity (C10) between the former limit winding (TA) of high frequency transformer and the end of the same name of the first secondary winding (TB).
3, external mining intrinsic safety power supply according to claim 1 and 2 is characterized in that: output rectifier and filter also comprises the branch road that is formed by the 6th diode (VD6), the 11 electric capacity (C11), the 12 electric capacity (C12), the 6th resistance (R6), the 9th electric capacity (C9) hybrid junction.
4, external mining intrinsic safety power supply according to claim 1 and 2 is characterized in that: be connected with the 9th resistance (R9), the 16 electric capacity (C16) between the sampling end of three-terminal voltage-stabilizing pipe (U3) and the control end.
5, external mining intrinsic safety power supply according to claim 3 is characterized in that: be connected with the 9th resistance (R9), the 16 electric capacity (C16) between the sampling end of three-terminal voltage-stabilizing pipe (U3) and the control end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910074483A CN101635523A (en) | 2009-05-26 | 2009-05-26 | External mining intrinsic safety power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910074483A CN101635523A (en) | 2009-05-26 | 2009-05-26 | External mining intrinsic safety power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101635523A true CN101635523A (en) | 2010-01-27 |
Family
ID=41594615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910074483A Pending CN101635523A (en) | 2009-05-26 | 2009-05-26 | External mining intrinsic safety power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101635523A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867298A (en) * | 2010-07-03 | 2010-10-20 | 太原理工大学 | Intrinsically-safe power supply device for mining |
| 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 |
| CN101808389B (en) * | 2010-02-04 | 2013-07-24 | 常州联力自动化科技有限公司 | Non-safety power supply signal processor |
| CN103997199A (en) * | 2014-05-28 | 2014-08-20 | 合肥华耀电子工业有限公司 | Active power factor correction circuit with fault detection function |
| CN104009652A (en) * | 2014-06-18 | 2014-08-27 | 国家电网公司 | Portable direct-current power supply |
| CN108233329A (en) * | 2018-03-16 | 2018-06-29 | 西安赛诺克新能源科技股份有限公司 | A kind of protection circuit for improving main circuit and disconnecting response speed |
| CN112467984A (en) * | 2020-10-20 | 2021-03-09 | 上海文涛电子有限公司 | Power supply carried by ice machine board |
-
2009
- 2009-05-26 CN CN200910074483A patent/CN101635523A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101808389B (en) * | 2010-02-04 | 2013-07-24 | 常州联力自动化科技有限公司 | Non-safety power supply signal processor |
| CN101867298A (en) * | 2010-07-03 | 2010-10-20 | 太原理工大学 | Intrinsically-safe power supply device for mining |
| 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 |
| CN103997199A (en) * | 2014-05-28 | 2014-08-20 | 合肥华耀电子工业有限公司 | Active power factor correction circuit with fault detection function |
| CN104009652A (en) * | 2014-06-18 | 2014-08-27 | 国家电网公司 | Portable direct-current power supply |
| CN108233329A (en) * | 2018-03-16 | 2018-06-29 | 西安赛诺克新能源科技股份有限公司 | A kind of protection circuit for improving main circuit and disconnecting response speed |
| CN108233329B (en) * | 2018-03-16 | 2024-05-31 | 西安赛诺克新能源科技有限公司 | Protection circuit for improving main circuit disconnection response speed |
| CN112467984A (en) * | 2020-10-20 | 2021-03-09 | 上海文涛电子有限公司 | Power supply carried by ice machine board |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201185355Y (en) | High voltage line induction electricity-taking apparatus | |
| CN201854482U (en) | LED power circuit | |
| CN104795876B (en) | Intelligent charger based on multi-resonant topology | |
| CN101635523A (en) | External mining intrinsic safety power supply | |
| CN204068405U (en) | The earth leakage protective DC power-supply system of a kind of band | |
| CN103151829B (en) | Two-channel direct-current (DC) output waterproof constant current power supply | |
| CN105226732A (en) | The draw-out power supply circuit of cable temperature monitoring device | |
| CN203119598U (en) | Double-channel direct-current (DC) output waterproof constant current power source | |
| CN204517680U (en) | A kind of interchange inputs doubleway output DC-stabilized circuit | |
| CN103227515A (en) | Non-contact self-powered power supply for overhead high voltage line | |
| CN201418038Y (en) | External intrinsic safety power supply for mining use | |
| CN201430466Y (en) | Electronic emergency power supply for emergency light | |
| CN205882809U (en) | Charger circuit | |
| CN102545373A (en) | Dual power switching device for intelligent electronic equipment | |
| CN103997199A (en) | Active power factor correction circuit with fault detection function | |
| CN201015172Y (en) | Suspending type induction power source | |
| CN208923919U (en) | A kind of coupling power taking device for high altitude localities | |
| CN103457469B (en) | Anti-explosion voltage-stabilized power source | |
| CN203180773U (en) | Passive intelligent power distribution apparatus | |
| CN202334336U (en) | Active electronic type transformer power supply | |
| CN203590560U (en) | LED drive circuit and LED lamp | |
| CN113394888A (en) | Online energy-taking power supply device based on power transmission line | |
| CN202565158U (en) | Explosion suppression and intrinsic safety switch power with power factor correction | |
| CN202738222U (en) | Light-emitting diode driving device | |
| CN203457054U (en) | Wide input voltage flyback switching power supply suitable for DC motor driving |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100127 |