CN204009093U - A kind of essential safe type focus detonation synchronous triggering device for mine method of seismic exploration - Google Patents
A kind of essential safe type focus detonation synchronous triggering device for mine method of seismic exploration Download PDFInfo
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- CN204009093U CN204009093U CN201420405141.7U CN201420405141U CN204009093U CN 204009093 U CN204009093 U CN 204009093U CN 201420405141 U CN201420405141 U CN 201420405141U CN 204009093 U CN204009093 U CN 204009093U
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Abstract
The utility model is specifically related to a kind of mining intrinsic safety type focus detonation synchronous triggering device for method of seismic prospecting under coal mine.How to solve not only to meet national security regulation but also meet explosive charge and constantly extract TB synchronous triggering signal, become a difficult problem.The utility model comprises casing, and pulse current mutual inductor is comprised of magnet ring axle sleeve, magnet ring, coil and the bus of blowing out, and magnet ring axle sleeve outside is embedded with magnet ring, and the head end of coil and tail end are as leading-out terminal; The both ends of the surface of magnet ring axle sleeve are provided with cable-through hole; Casing inside is provided with the printed circuit board that is equipped with pulse shaping circuit and double protection circuit, is also provided with in order to water joint and pilot lamp through TB signal cable, and TB signal cable one end is connected with double protection circuit, and there is connector plug one end.The utility model utilizes the isolation technology of punching pulse current mutual inductance and intrinsic safety type " ib " explosion-proof technology of shaping pulse double protection, has solved the limited problem of electrical correlation use-pattern.
Description
Technical field
The utility model belongs to mine geophysical prospecting technical field, is specifically related to a kind of mining intrinsic safety type focus detonation synchronous triggering device that is applicable to method of seismic prospecting under coal mine.
Background technology
The ultimate principle of mine method of seismic prospecting is same as surface seismic exploration, conventionally adopts explosive as " focus " of earthquake-wave-exciting.For what guarantee that seismic instrument can be promptly and accurately, start data acquisition from epicenter excitation moment, between focus and seismic instrument, must be equipped with detonation synchronous triggering device.Its course of work is after sending " blowing out " order, by blasting machine, produces high-voltage pulse fired charge in a flash, and focus detonation synchronous triggering device is converted into the pulse current of blowing out on bus the pulse signal of a logic level.This signal has been determined the T=0 time break, and is sent to seismic instrument, for the enabled instruction of the synchronous data sampling of initiating earthquake, and guarantees that epicenter excitation and data acquisition start synchronization accuracy.The order of accuarcy of TB synchronous triggering signal is most important for seismic prospecting data subsequent treatment, Explanation Accuracy.
What conventionally adopt is photoelectric isolation technology to tradition focus detonation synchronous triggering device (containing the external device of import), the sample resistance of blowing out in bus bar circuit at blasting machine by serial or parallel connection, photoisolator output is overturn, produce logic level (3V～5V conventionally) signal, thereby realize high-voltage pulse to the conversion of low voltage logic pulse.Because photoelectric isolating device of the prior art is fragile in Practical Project is used, cause blown-out shot, affect seismic exploration project progress.In addition, from time delay aspect, the time precision of domestic and international other blasting machine using at present, its time error of detonating is all at Millisecond, for the 0.5ms generally using at present, the sampling rate of 0.25ms, its synchronization accuracy is obviously inadequate, can not meet the demand of modern mine seismic prospecting and high precision exploration.
Adopting above-mentioned background technology to declare in mining product safety notice certificate process, the technological audit expert that the peace national mining product safety notice center of mark and national security biopsy are surveyed inspection body has negated the electrical correlation mode of traditional focus detonation synchronous triggering device and blasting machine.Owing to having formed electrical correlation relation by blowing out the sample resistance of bus bar circuit between energy source synchronizer and blasting machine, energy source synchronizer has in fact become the associate device of blasting machine.Blasting machine belongs to " special type " electrical equipment for colliery, and for guaranteeing blasting operation safety, national < < safety regulations in coal mine > > has and strict regulation.Regulation in the 334th " shot-firing cable and connecting line must meet standard, must not contact with the electric conductor such as track, metal tube, wire netting, wire rope ".
Therefore, adopt the focus detonation synchronous triggering device of traditional background technology and the electrical correlation use-pattern of blasting machine to be subject to prohibiting of national mine safety relevant laws and regulations.How to solve the relevant regulations that had both met national < < safety regulations in coal mine > >, meet again the demand that explosive charge extracts TB synchronous triggering signal constantly, become a mine seismic exploration project difficult problem anxious to be resolved.
Summary of the invention
The utility model, in order to solve the wretched insufficiency part that in above-mentioned existing background technology, focus detonation synchronous triggering device use-pattern associated with blasting machine strictly forbidden by national mine safety laws and regulations, provides a kind of essential safe type for mine method of seismic exploration (hereinafter to be referred as " intrinsic safety type ") focus detonation synchronous triggering device (hereinafter to be referred as " synchronous device ").
To achieve these goals, the utility model has adopted following technical proposal:
Essential safe type focus detonation synchronous triggering device for mine method of seismic exploration, comprise casing and pulse current mutual inductor, described pulse current mutual inductor forms by being fixed on magnet ring axle sleeve, magnet ring, coil and the bus of blowing out that casing inside makes by insulating material, magnet ring axle sleeve outside is embedded with the magnet ring of winding around, and the head end of described coil and tail end are as the leading-out terminal of pulse current mutual inductor; The both ends of the surface of magnet ring axle sleeve are provided with in order to through blowing out the cable-through hole of bus, and described cable-through hole is arranged on casing lateral wall; Casing inside is provided with printed circuit board, is equipped with pulse shaping circuit and double protection circuit on printed circuit board; On casing, be respectively arranged with Waterproof connector of cable and the pilot lamp being connected with pulse shaping circuit, described Waterproof connector of cable is in order to pass TB signal cable, and TB signal cable one end is connected with double protection circuit, and the other end is provided with connector plug.
Comprise ± 10V of described pulse shaping circuit Transient Suppression Diode D705, D706, the full wave bridge rectifier being formed by four diode D701, D702, D703, D704, pulse shaping circuit output terminal MC is connected with light emitting diode D709, is connected with capacitor C 701 between output terminal MC and ground.
Described double protection circuit is connected with pulse shaping circuit output terminal MC, comprise by capacitor C 702 and resistance R 701 RC circuit in series, diode D707, D708, the capacitor C 703 in parallel with RC circuit, and variable resistor W701, resistance R 702, variable resistor W701 connects with resistance R 702, in parallel with RC circuit again after both series connection, is connected with TB signal cable on variable resistor W701.
The described bus of blowing out adopts insulating covering wire.
Describedly blow out the pulse current power-on time that bus produces and be not more than 4ms, initiation impulse is not less than 8.7A
2
. ms and be not more than 12.0A
2
. ms.
Described double protection circuit is limited to 5 V by the voltage magnitude of pulse shaping circuit output terminal, and regulates TB synchronous triggering signal output amplitude at 3 V～5 V.
Described magnet ring material is NXO ferrite.
The winding structure of described coil is single layer coil, and winding method is close around formula coil, and inductance value is 0.5mH.
Described printed circuit board and pulse current mutual inductor are integrated by RTV-133 sulphurated siliastic rubber seal.
The material of described casing is ABS, and casing outer surface adopts the processing of electrostatic prevention paint spraying coating process to make its surface insulation resistance be less than 1 * 109 Ω.
The utility model is the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration; utilize punching pulse current mutual inductor technology; adopt passive electric circuit technical scheme; according to intrinsic safety type " ib " the protection class design of GB 3836.4-2010 regulation; type of protection [of an electrical apparatus for explosive atmospheres is " Ex ib I Mb ", and complete machine does not have Power supply.
Compared with prior art, the advantage and the effect that the utlity model has are as follows:
The utility model utilizes the isolation technology of punching pulse current mutual inductance and intrinsic safety type " ib " explosion-proof technology of shaping pulse double protection, has effectively solved mining " special type " of the prior art electrical equipment---the limited problem of electrical correlation use-pattern of blowing out between bus and synchronous device that mining blasting machine connects.Complete machine structure design concept is ingenious, outward appearance is novel, has reasonably solved and has blown out bus through the design challenges of casing inner magnet annular distance, and the dielectric strength of mutual inductance isolation can reach 3000 VAC.Adopt passive electric circuit design proposal, complete machine, without Power supply, has been avoided artificial periodic maintenance, safe and reliable.By a large amount of correlation tests, accurately obtained focus blast TB synchronous triggering signal, the synchronous recording precision of the time break and seismic event initial time is better than 0.01 ms, meets the demand of modern mine seismic prospecting and high precision exploration completely.Particularly in engineering, easily realize, tool has significant practical applications.
The utility model has passed through explosion-proof performance examination and the check of national security production testing inspection body, and on July 1st, 2013, has obtained product E x conformity certificate of protection and MA safety notice certificate.
Accompanying drawing explanation
Fig. 1 is the utility model structural principle schematic diagram;
Fig. 2 is pulse current mutual inductor;
Fig. 3 is magnet ring axle sleeve structure schematic diagram;
Fig. 4 is casing external structure schematic diagram;
Fig. 5 is shaping pulse electrical schematic diagram;
Fig. 6 is double protection electrical schematic diagram.
In figure, 1-magnet ring axle sleeve, 2-pulse current mutual inductor, 3-pulse shaping circuit, 4-double protection circuit, 5-blow out bus, 6-Waterproof connector of cable, 7-TB signal cable, 8-connector plug, 9-pilot lamp, 10-casing, 11-printed circuit board, 12-cable-through hole, 13-magnet ring, 14-coil.
Embodiment
Below in conjunction with accompanying drawing and embodiment of the present utility model, do into a detailed description:
Referring to Fig. 1-Fig. 4, the utility model is the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration, include casing 10, be fixed on the magnet ring axle sleeve 1 of casing 10 inside, on magnet ring axle sleeve 1, be provided with and supply to blow out bus 5 to penetrate the cable-through hole 12 passing through, in casing 10 inside, be provided with the circular magnet ring 13 that is wound around secondary coil 14, be wrapped in the outlet terminal that secondary coil 14 head end B1 on magnet ring 13 and tail end B2 form pulse current mutual inductor 2, described magnet ring 13 embeds and is fixed on magnet ring axle sleeve 1, on two end faces of magnet ring axle sleeve 1, be provided with cable-through hole 12 and be positioned at casing 10 outsides, in casing 10 inside, be provided with printed circuit board 11, on described printed circuit board 11, be equipped with pulse shaping circuit 3 and double protection circuit 4, at the top of casing 10, be respectively arranged with the pilot lamp 9 and the Waterproof connector of cable 6 that are connected with pulse shaping circuit 3, described Waterproof connector of cable 6 is for penetrating the TB signal cable 7 by being connected with double protection circuit 4, TB signal cable 7 is caused to casing 10 outsides from casing 10 inside, and described TB signal cable 7 ends are provided with connector plug 8.
Punching pulse current mutual inductor isolation technology and the electrical isolation of blowing out between bus in played critical effect.The insulation isolation structure technique of described punching pulse current mutual inductor is: in the endoporus of magnet ring, the magnet ring axle sleeve with through hole that embedding is made of insulating material is also arranged on the inside of synchronous device casing, and the cable-through hole of two end faces of magnet ring axle sleeve is positioned at the outside of casing.The bus of blowing out adopts insulating covering wire, penetrate and with synchronous device, direct electrical correlation do not occur during by magnet ring axle sleeve cable-through hole, having solved the electrical correlation mode of being prohibited by national mine safety relevant laws and regulations in above-mentioned existing background technology effective and reasonablely.
Referring to Fig. 5, pulse shaping circuit is for waveform amplitude limit and the polarity conversion of pulse current mutual inductor Secondary Winding induced signal.
Referring to Fig. 6, double protection circuit is for the output voltage amplitude of Limited Pulses shaping circuit, and its amplitude limit barrier propterty meets the requirement of intrinsic safety type " ib " protection class of GB 3836.4-2010 regulation.
Principle of work of the present utility model is: after sending " blowing out " order, producing high-voltage pulse fired charge in a flash, the safe power supply time of pulse current that bus produces of blowing out penetrating by cable-through hole is not more than 4 ms, and initiation impulse is not less than 8.7 A
2ms and be not more than 12.0 A
2ms.According to electromagnetic induction principle, the pulse current of blowing out on bus induces magnetic flux as winding of mutual inductor in magnet ring loop, and magnetic flux induces secondary voltage through Secondary Winding, and forms electric current in secondary load.For the high pressure that prevents that pulse current mutual inductor secondary side from producing, at Secondary Winding two ends, be connected in parallel to double protection ± 10 V Transient Suppression Diode D705, D706.In order to realize unipolarity TB pulse signal, the D701 in pulse shaping circuit, D702, D703 and D704 have formed a full wave bridge rectifier, for completing the polarity conversion of pulse voltage signal.Pulse shaping circuit output terminal MC is connected with light emitting diode D709, when blowing out bus, occurs after " ignition " pulse current, and whether pilot lamp moment is luminous, normal for display synchronization signal work.Double protection circuit is limited to 5 V by the voltage magnitude of pulse shaping circuit output terminal MC, and by W701 Attenuation adjustable TB synchronous triggering signal output amplitude in 3 V～5 V scopes, cable plug by TB signal cable end is connected to mine seismograph device, for the enabling signal of earthquake data acquisition.
Described punching pulse current mutual inductor structure itself is not established winding one time, by blowing out the current carrying conductor of bus through magnetic ring inner hole, has formed a winding of 1 circle.Be wrapped on magnet ring Secondary Winding Direct Uniform.In order to guarantee that current transformer has good electric current progress of disease characteristic, core type is selected has high magnetic conduction and low-loss feature NXO nickel-zinc ferrite magnet ring.Pulse current mutual inductor coil is made requirement: winding structure is single layer coil; Winding method is close around formula coil; Coil inductance value is 0.5 mH.
Owing to blowing out, the direction that bus penetrates by magnet ring axle sleeve hole is different, and P1 enters that P2 goes out or P2 enters P1 and goes out, and the secondary side at pulse current mutual inductor is produced to the pulse of opposed polarity.In order to realize unipolarity TB pulse signal, in pulse shaping circuit, be provided with full wave bridge rectifier, regardless of blowing out bus, penetrate by the direction of magnet ring axle sleeve hole, be all converted to positive pulse signal.
In order to meet the correlation technique requirement of ex electrical product, aspect manufacture craft, select RTV-133 sulphurated siliastic that the circuit board of complete machine inside and pulse current mutual inductor encapsulation are integrated, the possibility of the lower encapsulation components interior spark initiation of reasonably having avoided nonserviceabling.The case material of selecting is ABS, to casing outer surface, adopts electrostatic prevention paint spraying coating process to process, and makes its surface insulation resistance be less than 1 * 10
9Ω.
Claims (10)
1. the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration, it is characterized in that: comprise casing (10) and pulse current mutual inductor (2), described pulse current mutual inductor (2) forms by being fixed on magnet ring axle sleeve (1), magnet ring (13), coil (14) and the bus (5) of blowing out that casing inside makes by insulating material, magnet ring axle sleeve (1) outside is embedded with the magnet ring (13) of winding around (14), and the head end of described coil (14) and tail end are as the leading-out terminal of pulse current mutual inductor (2); The both ends of the surface of magnet ring axle sleeve (1) are provided with in order to through blowing out the cable-through hole (12) of bus (5), and described cable-through hole (12) is arranged on casing (10) lateral wall; Casing (10) inside is provided with printed circuit board (11), is equipped with pulse shaping circuit (3) and double protection circuit (4) on printed circuit board (11); On casing (10), be respectively arranged with Waterproof connector of cable (6) and the pilot lamp (9) being connected with pulse shaping circuit (3), described Waterproof connector of cable (6) is in order to pass TB signal cable (7), TB signal cable (7) one end is connected with double protection circuit (4), and the other end is provided with connector plug (8).
2. the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration according to claim 1, it is characterized in that: comprise ± 10V of described pulse shaping circuit (3) Transient Suppression Diode D705, D706, the full wave bridge rectifier being formed by four diode D701, D702, D703, D704, pulse shaping circuit (3) output terminal MC is connected with light emitting diode D709, is connected with capacitor C 701 between output terminal MC and ground.
3. the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration according to claim 1, it is characterized in that: described double protection circuit (4) is connected with pulse shaping circuit (3) output terminal MC, comprise by capacitor C 702 and resistance R 701 RC circuit in series, diode D707, D708, the capacitor C 703 in parallel with RC circuit, and variable resistor W701, resistance R 702, variable resistor W701 connects with resistance R 702, in parallel with RC circuit again after both series connection, on variable resistor W701, be connected with TB signal cable (7).
4. the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration according to claim 1, is characterized in that: described in blow out bus (5) and adopt insulating covering wire.
5. the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration according to claim 1, is characterized in that: described in blow out the pulse current power-on time that bus (5) produces and be not more than 4ms, initiation impulse is not less than 8.7A
2
. ms and be not more than 12.0A
2
. ms.
6. the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration according to claim 1, it is characterized in that: described double protection circuit (4) is limited to 5 V by the voltage magnitude of pulse shaping circuit (3) output terminal, and regulate TB synchronous triggering signal output amplitude at 3 V～5 V.
7. the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration according to claim 1, is characterized in that: described magnet ring (13) material is NXO ferrite.
8. the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration according to claim 1, is characterized in that: the winding structure of described coil (14) is single layer coil, and winding method is close around formula coil, and inductance value is 0.5mH.
9. the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration according to claim 1, is characterized in that: described printed circuit board (11) is integrated by RTV-133 sulphurated siliastic rubber seal with pulse current mutual inductor (2).
10. the essential safe type focus detonation synchronous triggering device for mine method of seismic exploration according to claim 1, it is characterized in that: the material of described casing (10) is ABS, casing (10) outside surface adopts the processing of electrostatic prevention paint spraying coating process to make its surface insulation resistance be less than 1 * 10
9 Ω.
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| CN201420405141.7U CN204009093U (en) | 2014-07-22 | 2014-07-22 | A kind of essential safe type focus detonation synchronous triggering device for mine method of seismic exploration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105894770A (en) * | 2016-04-05 | 2016-08-24 | 西安弘传科技开发有限责任公司 | Downhole seismic time-break signal wireless transmission system |
-
2014
- 2014-07-22 CN CN201420405141.7U patent/CN204009093U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105894770A (en) * | 2016-04-05 | 2016-08-24 | 西安弘传科技开发有限责任公司 | Downhole seismic time-break signal wireless transmission system |
| CN105894770B (en) * | 2016-04-05 | 2021-01-15 | 西安弘传科技开发有限责任公司 | Well earthquake time-break signal wireless transmission system |
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