CN102332816A - Underground power supply anti-jamming protection circuit - Google Patents
Underground power supply anti-jamming protection circuit Download PDFInfo
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- CN102332816A CN102332816A CN201110279347A CN201110279347A CN102332816A CN 102332816 A CN102332816 A CN 102332816A CN 201110279347 A CN201110279347 A CN 201110279347A CN 201110279347 A CN201110279347 A CN 201110279347A CN 102332816 A CN102332816 A CN 102332816A
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- power supply
- power
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- underground
- power input
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Abstract
The invention relates to an underground power supply anti-jamming protection circuit for performing anti-jamming protection for the intrinsically safe power supply of underground electronic equipment in coal mine. The circuit comprises a remote intrinsically safe power supply connected with a power input terminal of the circuit and intrinsically safe electric equipment located underground; two balance reactors wound in a two-wire parallel noninductive winding way are sequentially connected between the power input terminal and the two phases of a power input end of mine equipment; a vacuum discharge tube is connected between the power input terminal and the two-phase power line of the first balance reactor; a zinc oxide piezoresistor is connected between the two-phase power lines through which the first balance reactor is connected with the second balance reactor; and a bidirectional transient diode is connected between the two-phase power lines through which the second balance reactor is connected with the intrinsically safe electric equipment. The underground power supply anti-jamming protection circuit provided by the invention not only can meet the requirements on the intrinsic safety of underground equipment and reach the requirements of electromagnetic compatibility test, but also has relatively strong surge protection capability.
Description
Technical field
The present invention relates to a kind of down-hole power anti-jamming circuit that is used for the intrinsically safe power supply of colliery downhole electronics is carried out anti-interference protection.
Background technology
The explosion-proof intrinsically safe circuit of underground mine use electricity equipment is different with conventional circuit; It generally includes the guard grating circuit that is made up of high-power mos transistor; Carrying out 2000V surge test and ringing pulse crowd when testing, transistor will breakdownly damage, if apply inductance or capacitive lag protection component; Can destroy the essential safety parameter again; Making it because the specification requirement of mutual restriction is difficult to find compromise point, still to have the desirable coal mine explosion-proof power supply product that can pass through electromagnetic compatibility test so far through explosion-proof test.
Summary of the invention
Technical problem to be solved by this invention is, a kind of requirement that both can satisfy the underground equipment essential safety is provided, and reaches the electromagnetic compatibility test requirement, has the anti-interference protective circuit of down-hole power of stronger surge protection ability again.
The anti-interference protective circuit of down-hole power of the present invention includes the distant place intrinsic safety electric source that is connected with the power input terminal of circuit and the intrinsic safety power consumption equipment that is positioned at the down-hole (like mine sensors etc.); Between power input two phases of power input terminal to mining equipment, be connected with two interphase reactors in turn; Said interphase reactor is two-wire and forms around noninductive method for winding coiling, promptly on the tubulose soft magnetic bodies with the parallel inductance of processing around mode of wearing side by side of two-wire; Between the input two-phase power supply line of power input terminal and first interphase reactor, be connected with vacuum discharge tube; Between the two-phase power supply line of second interphase reactor of first interphase reactor connection, be connected with Zinc-oxide piezoresistor; Between second interphase reactor and two-phase power supply line that intrinsic safety power consumption equipment input is connected, be connected with two-way transient state diode.
Said two-way transient state diode is a plurality of parallel connections.
Said Zinc-oxide piezoresistor is a plurality of parallel connections.
Said vacuum discharge tube is a plurality of parallel connections.
Advantage applies of the present invention exists:
1, interphase reactor is special common mode inhibition magnetic tube inductance; It is employed on the tubulose soft magnetic bodies, two-wire is parallel wear side by side around special noninductive technology make, see into from interphase reactor power input the two poles of the earth; Coil direction inductance is back and forth cancelled out each other; Work inside, loop does not have induction reactance to exist, and can not produce self induction electromotive force to short-circuit current rush and cause electric spark, and is undamped to high frequency signals transmitted yet; Connect from the inductance that the earth end is seen into, common mode interference signal presents high reactance inhibition over the ground;
2, suppress to take three grades of segmentation surge protections in the circuit at differential mode; The first order is used the high vacuum discharge tube of discharge surge capacity; Adopt the fabulous Zinc-oxide piezoresistor of anti-overload property in order to high-energy induction electric current, the second level in the long distance line of releasing, absorb remaining surge voltage, the protection of the 3rd utmost point employing transient state diode limiting, the double surge current limliting of doing of reactor winding copper resistance; The protection device is taked the dual redundant design; Make that voltage is strict controlled in the safe threshold values in the circuit, under three grades of coordinating protections, can resist not gush and can damage instrument and equipment than high seas;
3, signalling channel all adopts the accessory power supply technology of isolating; Let holding wire break away from the earth reference potential, make it suspension work, because the electromagnetic interference overwhelming majority all is the voltage fluctuation of circuit to the earth; Two circuits are in same current potential when receiving electromagnetic disturbance; Cut off path over the ground in the circuit, can not produce differential voltage between two circuits, can effectively avoid common mode disturbances.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
As shown in the figure, the anti-interference protective circuit of this down-hole power includes the distant place intrinsic safety electric source that is connected with the power input terminal of circuit 1 and the intrinsic safety power consumption equipment 2 that is positioned at the down-hole (like mine sensors etc.); Between power input two phases of mining equipment, be connected with two interphase reactors 3 at power input terminal A, B in turn; Interphase reactor is two-wire and forms around noninductive method for winding coiling, promptly on the tubulose soft magnetic bodies with the parallel inductance of processing around mode of wearing side by side of two-wire; Between the input two-phase power supply line of power input terminal and first interphase reactor, be connected with vacuum discharge tube 6; Between the two-phase power supply line of second interphase reactor of first interphase reactor connection, be connected with Zinc-oxide piezoresistor 5; Between second interphase reactor and two-phase power supply line that intrinsic safety power consumption equipment input is connected, be connected with two-way transient state diode 4.Two-way transient state diode, Zinc-oxide piezoresistor, vacuum discharge tube are a plurality of parallel connections.
Interphase reactor is special common mode inhibition magnetic tube inductance, and it is employed on the tubulose soft magnetic bodies, two-wire is parallel wear side by side around special noninductive technology make; A, 2 of B see into that coil direction inductance is back and forth cancelled out each other from figure, and work inside, loop does not have induction reactance to exist; Can not produce self induction electromotive force to short-circuit current rush and cause electric spark; Also undamped to high frequency signals transmitted, connect from the inductance that the earth end is seen into, common mode interference signal presents high reactance inhibition over the ground; Suppress to take three grades of segmentation surge protections in the circuit at differential mode; The first order is used the high vacuum discharge tube of discharge surge capacity; Adopt the fabulous Zinc-oxide piezoresistor of anti-overload property in order to high-energy induction electric current, the second level in the long distance line of releasing, absorb remaining surge voltage, the protection of the 3rd utmost point employing transient state diode limiting, the double surge current limliting of doing of reactor winding copper resistance; The protection device is taked the dual redundant design; Make that voltage is strict controlled in the safe threshold values in the circuit, under three grades of coordinating protections, can resist not gush and can damage instrument and equipment than high seas; Signalling channel all adopts the accessory power supply technology of isolating; Let holding wire break away from the earth reference potential, make it suspension work, because the electromagnetic interference overwhelming majority all is the voltage fluctuation of circuit to the earth; Two circuits are in same current potential when receiving electromagnetic disturbance; Cut off path over the ground in the circuit, can not produce differential voltage between two circuits, can effectively avoid common mode disturbances.
Claims (4)
1. anti-interference protective circuit of down-hole power; Include distant place intrinsic safety electric source 1 that is connected with the power input terminal of circuit and the intrinsic safety power consumption equipment 2 that is positioned at the down-hole; It is characterized in that: between power input two phases of mining equipment, be connected with two interphase reactors 3 in turn at power input terminal A, B; Interphase reactor is two-wire and forms around noninductive method for winding coiling, promptly on the tubulose soft magnetic bodies with the parallel inductance of processing around mode of wearing side by side of two-wire; Between the input two-phase power supply line of power input terminal and first interphase reactor, be connected with vacuum discharge tube 6; Between the two-phase power supply line between second interphase reactor of first interphase reactor connection, be connected with Zinc-oxide piezoresistor 5; Between second interphase reactor and two-phase power supply line that intrinsic safety power consumption equipment input is connected, be connected with two-way transient state diode 4.
2. the anti-interference protective circuit of down-hole power according to claim 1 is characterized in that: two-way transient state diode is a plurality of parallel connections.
3. the anti-interference protective circuit of down-hole power according to claim 1 is characterized in that: said Zinc-oxide piezoresistor is a plurality of parallel connections.
4. the anti-interference protective circuit of down-hole power according to claim 1 is characterized in that: said vacuum discharge tube is a plurality of parallel connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110279347A CN102332816A (en) | 2011-09-20 | 2011-09-20 | Underground power supply anti-jamming protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110279347A CN102332816A (en) | 2011-09-20 | 2011-09-20 | Underground power supply anti-jamming protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102332816A true CN102332816A (en) | 2012-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110279347A Pending CN102332816A (en) | 2011-09-20 | 2011-09-20 | Underground power supply anti-jamming protection circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN102332816A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162318A (en) * | 2015-08-25 | 2015-12-16 | 山东超越数控电子有限公司 | Method for improving video graphics array (VGA) signal display quality |
| CN105342584A (en) * | 2015-10-14 | 2016-02-24 | 天津华宁电子有限公司 | Mining monitoring system |
| CN107589349A (en) * | 2017-10-24 | 2018-01-16 | 国家电网公司 | High voltage induction electricity getting system |
| CN111781916A (en) * | 2020-07-01 | 2020-10-16 | 东风越野车有限公司 | Anti-electromagnetic interference integrated controller for whole vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5313176A (en) * | 1992-10-30 | 1994-05-17 | Motorola Lighting, Inc. | Integrated common mode and differential mode inductor device |
| CN101788815A (en) * | 2009-12-30 | 2010-07-28 | 镇江中煤电子有限公司 | Anti-interference underground safety monitoring system |
| CN202285324U (en) * | 2011-09-20 | 2012-06-27 | 镇江中煤电子有限公司 | Underground power supply anti-jamming protection circuit |
-
2011
- 2011-09-20 CN CN201110279347A patent/CN102332816A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5313176A (en) * | 1992-10-30 | 1994-05-17 | Motorola Lighting, Inc. | Integrated common mode and differential mode inductor device |
| CN101788815A (en) * | 2009-12-30 | 2010-07-28 | 镇江中煤电子有限公司 | Anti-interference underground safety monitoring system |
| CN202285324U (en) * | 2011-09-20 | 2012-06-27 | 镇江中煤电子有限公司 | Underground power supply anti-jamming protection circuit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162318A (en) * | 2015-08-25 | 2015-12-16 | 山东超越数控电子有限公司 | Method for improving video graphics array (VGA) signal display quality |
| CN105342584A (en) * | 2015-10-14 | 2016-02-24 | 天津华宁电子有限公司 | Mining monitoring system |
| CN107589349A (en) * | 2017-10-24 | 2018-01-16 | 国家电网公司 | High voltage induction electricity getting system |
| CN107589349B (en) * | 2017-10-24 | 2019-11-08 | 国家电网公司 | High voltage induction electricity getting system |
| CN111781916A (en) * | 2020-07-01 | 2020-10-16 | 东风越野车有限公司 | Anti-electromagnetic interference integrated controller for whole vehicle |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120125 |
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| WD01 | Invention patent application deemed withdrawn after publication |