CN103531326A - Explosion-proof electromagnet and circuit control module thereof - Google Patents
Explosion-proof electromagnet and circuit control module thereof Download PDFInfo
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- CN103531326A CN103531326A CN201310483455.9A CN201310483455A CN103531326A CN 103531326 A CN103531326 A CN 103531326A CN 201310483455 A CN201310483455 A CN 201310483455A CN 103531326 A CN103531326 A CN 103531326A
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Abstract
The invention discloses a circuit control module for an explosion-proof electromagnet. The circuit control module comprises an input module, a voltage reducing module, a delay switch module and an output module, wherein one path of the initial voltage input by the input module is reduced by the voltage reducing module to be input into the delay switch module, the other path of the initial voltage is directly input into the delay switch module, the delay switch module receives the initial voltage and the reduced voltage to output an initial voltage value to the output module to drive the electromagnet to be opened, and the delay time switch module delays for preset time to switch the output voltage into reduced voltage after the electromagnet is opened. The circuit control module is additionally arranged between a coil of the explosion-proof electromagnet and a wiring assembly. When the electromagnet is opened and needs larger voltage, high voltage is output. After the electromagnet is opened, only low voltage is kept, the output voltage is switched into low voltage to reduce coil power consumption, reduce heat value and enhance explosion-proof effects.
Description
Technical field
The present invention relates to electromagnet technical field, relate in particular to a kind of low-power consumption flame proof electromagnet.
Background technology
Flame proof electromagnet is mainly used for, in the control element of requirement of explosion proof, being particularly suitable for the inflammable occasions such as all kinds of coal mines, chemical industry, oil.Compare general electromagnet, flame proof electromagnet is more responsive for electromagnet power consumption, because power consumption is higher, represents that electromagnet coil heating is larger.Larger caloric value makes flame proof electromagnet must increase thickness or change structure just can reach original flame proof effect.
Existing flame proof electromagnet, the Chinese patent that for example publication number is CN101398104 " with the explosion prevention electromagnet of anti-explosion terminal box ", it is by being all sealed in anti-explosion terminal box to strengthen the flame proof effect of electromagnet electromagnet, the Chinese patent " anti-explosion valve controller " that and for example publication number is CN2052851, it is by arranging outer wiring cavity and explosion-proof chamber at electromagnet main cavity, and flame proof layer is set between two cavitys, explosion separation structure adopts circle seam compression type, and main cavity uses high-strength aluminum alloy casting to strengthen electromagnet flame proof effect.
Above-mentioned flame proof electromagnet be all change by mechanical structure to strengthen the flame proof effect of flame proof electromagnet, its cost is higher and applicability is poor.
Summary of the invention
Technical problem to be solved by this invention is, for the above-mentioned deficiency of prior art, proposes a kind of original flame proof electromagnet structure and flame proof electromagnet circuit control module low in energy consumption, flame proof is effective of not changing.
The present invention solves the technical scheme that its technical problem adopts, and proposes a kind of flame proof electromagnet circuit control module, and it comprises, input module, voltage reduction module, time delay handover module and output module; Initial voltage one tunnel of described input module input inputs to time delay handover module after voltage reduction module step-down, and another road is directly inputted into time delay handover module; Time delay handover module receives after initial voltage and step-down voltage, first exports initial voltage value to output module and opens with band motor magnet; Electromagnet switches to step-down voltage by output voltage after time delay handover module time delay Preset Time after opening.
Further, described flame proof electromagnet also comprises buck current detection module and Inrush current restraining module with circuit control module; Described buck current detection module is connected with time delay handover module, the current value of the buck current of exporting for detection of time delay handover module, this buck current feeds back to voltage reduction module by Inrush current restraining module, and whether the step-down voltage that voltage reduction module inputs to time delay handover module according to this buck current value judgement meets the requirements; Described Inrush current restraining module causes voltage reduction module misoperation for preventing the buck current value mutation of buck current detection module output.
Further, also comprise rectification circuit, be arranged between input module and voltage reduction module.
Further, also comprise overheat protector module, anti-oscillation module and short circuit protection module; Described overheat protector module is connected with voltage reduction module is two-way, for preventing voltage reduction module excess Temperature; Described anti-oscillation module is arranged between time delay handover module and output module, for preventing the fluctuation of time delay switching output module output voltage; Described short circuit protection module is connected with buck current detection module, for preventing short circuit.
Further, described voltage reduction module, buck current detection module, Inrush current restraining module, overheat protector module, anti-oscillation module and short circuit protection module are integrated in XL2009 chip and peripheral circuit; Described peripheral circuit comprises inductance L 1, metal-oxide-semiconductor Q1, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, diode D1, diode D2, diode D3, resistance R 1, resistance R 2, resistance R 3 and resistance R 4; Inductance L 1 one end access XL2009 chip five-port, the 6th port and diode D2 backward end, the other end accesses respectively capacitor C 3 first ends, diode D3 backward end and output buck voltage; Diode D2 forward end accesses respectively C3 the second end and diode D3 forward end; Initial voltage access XL2009 chip the 4th port also accesses respectively capacitor C 2 and capacitor C 4 first ends; Capacitor C 4 second terminations enter XL2009 chip the 3rd port; Resistance R 2 one end access XL2009 chip the 4th ports, the other end accesses respectively capacitor C 1 first end, resistance R 3 first ends, diode D1 backward end and metal-oxide-semiconductor Q1 grid; Diode D1 forward end, resistance R 3 second ends, capacitor C 1 second end and the equal ground connection of metal-oxide-semiconductor source class; Metal-oxide-semiconductor Q1 drain electrode access capacitor C 2 second ends; XL2009 chip the second end is by resistance R 1 access initial voltage; XL2009 chip first end is by resistance R 4 output buck voltages.
Further, described initial voltage is 24V, and step-down voltage is 8V, described inductance L 1 value 40-50uH, described capacitor C 1 value 0.5-2uF, capacitor C 2 value 70-120uF, capacitor C 3 value 70-100uF, capacitor C 4 value 0.5-1uF, resistance R 1 value 15-16.5K ohm, resistance R 2 value 40-50K ohms, resistance R 3 value 19-19.5 ohms, resistance R 4 value 40-50K ohms.
The present invention also provides a kind of flame proof electromagnet, and it comprises connector assembly, wire, circuit control module and coil; Described connector assembly access external voltage is also delivered to circuit control module by wire, and circuit control module drive coil obtains electric.
Further, also comprise shell, magnetic core-pipe subassembly and push rod; Magnetic core-pipe subassembly is surrounded by coil, and push rod is arranged in magnetic core-pipe subassembly, when coil obtains when electric, thereby magnetic core-pipe subassembly produces magnetic force, push rod is ejected open electromagnet.
Further, epoxy resin is filled up in described enclosure gap, and silicon rubber is filled with in connector assembly port; Coil and shell spacing after the coated multilayer insulation adhesive tape of coil periphery and coated insulation adhesive tape are not less than 0.8 millimeter.
The present invention is by extension circuit control module between flame proof magnet spool and connector assembly, output HIGH voltage when electromagnet unlatching needs larger voltage, while only needing low-voltage to maintain after electromagnet is opened, thereby switch output voltage to low-voltage, reduce coil power dissipation, reduce caloric value, strengthen flame proof effect.
Accompanying drawing explanation
Fig. 1 is the theory diagram that in one embodiment of the invention, flame proof electromagnet is used circuit control module;
Fig. 2 is XL2009 chip and peripheral circuit diagram in Fig. 1;
Fig. 3 is the cross-sectional schematic of flame proof electromagnet in one embodiment of the invention.
Embodiment
Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
Please refer to Fig. 1, flame proof electromagnet circuit control module of the present invention, it comprises input module 1, voltage reduction module 2, time delay handover module 3 and output module 4; Initial voltage one tunnel of described input module 1 input inputs to time delay handover module 3 after voltage reduction module 2 step-downs, and another road is directly inputted into time delay handover module 3; Time delay handover module receives after initial voltage and step-down voltage, first exports initial voltage value to output module 4 and opens with band motor magnet; Electromagnet switches to step-down voltage by output voltage after time delay handover module 3 time delay Preset Times after opening.
When electromagnet is opened, generally need larger active force, now magnet spool could produce larger magnetic force in requisition for larger voltage and moves with drive magnet push rod; Yet after electromagnet is opened, only need less active force can maintain the opening of electromagnet, during high voltage when if the voltage of now flowing through on coil is not opened yet, can cause on the one hand power consumption penalty to become large, also make on the other hand coil heating amount increase.
The present invention increases circuit control module before coil electricity, opens before coil is opened by high voltage, maintains and then reduce power consumption, reduce coil heating amount after coil unlatching by low-voltage.
For the voltage stabilization that makes circuit control module pass through the step-down voltage after voltage reduction module step-down and export by time delay handover module, circuit control module of the present invention includes buck current detection module 5 and Inrush current restraining module 6; Buck current detection module 5 is connected with time delay handover module 4, the buck current value of the buck current of exporting for detection of time delay handover module 4, this buck current value feeds back to voltage reduction module 2 by Inrush current restraining module 6, and whether the step-down voltage that voltage reduction module 2 inputs to time delay handover module 3 according to this buck current value judgement meets the requirements.
Inrush current restraining module 6 is mainly used in preventing that the buck current of buck current detection module 5 outputs from causing voltage reduction module misoperation while undergoing mutation due to a variety of causes.Thereby once will making the voltage of magnet spool change, voltage reduction module 2 misoperations make magnet control unstable, in flame proof occasion, can cause significant impact, so buck current detection module 5 is also most important in the circuit control module of flame proof electromagnet with Inrush current restraining module 6.
Preferably, for the stability of further accentuator, before input module 1 input voltage value voltage reduction module 2 and time delay handover module 3, first by rectification module 7 rectifications.Rectification module 7 can be used now mature various rectification scheme, such as full-bridge rectification etc.
Preferably, the circuit control module of the present embodiment also comprises overheat protector module 8, anti-oscillation module 9 and short circuit protection module 10.Overheat protector module 8 is connected with voltage reduction module 2 is two-way, for preventing voltage reduction module 2 excess Temperatures; Anti-oscillation module 9 is arranged between time delay handover module 3 and output module 4, for preventing the voltage fluctuation of time delay switching output module output; Short circuit protection module 10 is connected with buck current detection module 5, for preventing short circuit.
Further, described voltage reduction module 2, buck current detection module 5, Inrush current restraining module 6, overheat protector module 8, anti-oscillation module 9 and short circuit protection module 10 are integrated in XL2009 chip and peripheral circuit.
XL2009 chip is the high-performance DC-DC conversion chip that Shanghai Xin Long semiconductor technology limited company produces.Existing XL2009 chip is the chip that aims at vehicle-mounted charge exploitation, be mainly used in all kinds of onboard chargers, in the present embodiment, XL2009 chip is creatively applied in the circuit control module of flame proof electromagnet as main voltage reduction module, simultaneously in order to make XL2009 chip be more suitable for, in the use of flame proof electromagnet, also the peripheral circuit of XL2009 chip being carried out to specific design.
Particularly, please refer to Fig. 2, described peripheral circuit comprises inductance L 1, metal-oxide-semiconductor Q1, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, diode D1, diode D2, diode D3, resistance R 1, resistance R 2, resistance R 3 and resistance R 4; Inductance L 1 one end access XL2009 chip five-port, the 6th port and diode D2 backward end, the other end accesses respectively capacitor C 3 first ends, diode D3 backward end and output buck voltage; Diode D2 forward end accesses respectively C3 the second end and diode D3 forward end; Initial voltage access XL2009 chip the 4th port also accesses respectively capacitor C 2 and capacitor C 4 first ends; Capacitor C 4 second terminations enter XL2009 chip the 3rd port; Resistance R 2 one end access XL2009 chip the 4th ports, the other end accesses respectively capacitor C 1 first end, resistance R 3 first ends, diode D1 backward end and metal-oxide-semiconductor Q1 grid; Diode D1 forward end, resistance R 3 second ends, capacitor C 1 second end and the equal ground connection of metal-oxide-semiconductor source class; Metal-oxide-semiconductor Q1 drain electrode access capacitor C 2 second ends; XL2009 chip the second end is by resistance R 1 access initial voltage; XL2009 chip first end is by resistance R 4 output buck voltages.
In Fig. 2, inductance L 1 and peripheral circuit have formed buck current testing circuit; Metal-oxide-semiconductor Q1 and peripheral circuit have formed surge current suppression circuit, and thermal-shutdown circuit, short-circuit protection circuit and antihunt circuit consist of XL2009 internal module and peripheral each quasi-resistance, electric capacity and diode.
Be applied in flame proof electromagnet and be equipped with the field of employment that peripheral circuit makes it to be more applicable to flame proof electromagnet the former XL2009 chip that is exclusively used in onboard charger is creationary, make the important component part of the circuit control module of flame proof electromagnet: voltage reduction module is without designed, designed circuit, only need to design peripheral circuit, saved development cost.
Further, the cut-in voltage of the flame proof electromagnet of existing routine is generally 24V, and the use voltage of the flame proof electromagnet of existing routine is also 24V.Through strict calculating and experiment, learn, the voltage that maintains of conventional flame proof electromagnet is 8V, for keeping the step-down voltage of voltage reduction module output, also be 8V voltage stabilization, in Fig. 2, in the peripheral circuit of XL2009 chip, the value of each electronic component is: inductance L 1 value 40-50uH, described capacitor C 1 value 0.5-2uF, capacitor C 2 value 70-120uF, capacitor C 3 value 70-100uF, capacitor C 4 value 0.5-1uF, resistance R 1 value 15-16.5K ohm, resistance R 2 value 40-50K ohms, resistance R 3 value 19-19.5 ohms, resistance R 4 value 40-50K ohms.
Circuit element adopts above-mentioned value, makes the voltage that reduces through voltage reduction module very stable, meets very much the very high flame proof electromagnet of stability requirement is used.
Time delay handover module 3 can adopt existing delay circuit and commutation circuit, its groundwork principle is: initial voltage and step-down voltage input to respectively time delay handover module 3, first make initial voltage pass through, after time delay a period of time, output voltage is switched to step-down voltage.Delay circuit can adopt 555 conventional delay circuits or RC delay circuit etc., and commutation circuit can adopt the circuit of conventional a plurality of contactor interlockings formations or the commutation circuit of being controlled by software algorithm by control chip etc.
The present invention also provides a kind of flame proof electromagnet, and its cross-sectional schematic as shown in Figure 3.In Fig. 3, flame proof electromagnet of the present invention comprises connector assembly 100, wire 200, circuit control module 300 and coil 400.
Connector assembly 100 access external voltages are also delivered to circuit control module by wire 200, and circuit control module 300 drive coils 400 obtain electric.In order to prevent electric leakage, in connector assembly both sides, be still provided with bolt 101, for ground connection.
Preferably, also comprise shell 500, magnetic core-pipe subassembly 600 and push rod 700.Magnetic core-pipe subassembly 600 is surrounded by coil 400, and push rod 700 is arranged in magnetic core-pipe subassembly 600, when coil 400 when electric, thereby magnetic core-pipe subassembly 600 produces magnetic force, push rod 700 is ejected open electromagnet.
Preferably, after electromagnet has assembled, at electromagnet casing internal voids, epoxy resin is filled up at place, fills with silicon rubber to strengthen flame proof effect in connector assembly port.Coil after the coated multilayer insulation adhesive tape of coil periphery and coated insulation adhesive tape and shell spacing are not less than 0.8 millimeter to strengthen radiating effect and flame proof effect.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (9)
1. a flame proof electromagnet circuit control module, is characterized in that: comprise input module, voltage reduction module, time delay handover module and output module; Initial voltage one tunnel of described input module input inputs to time delay handover module after voltage reduction module step-down, and another road is directly inputted into time delay handover module; Time delay handover module receives after initial voltage and step-down voltage, first exports initial voltage value to output module and opens with band motor magnet; Electromagnet switches to step-down voltage by output voltage after time delay handover module time delay Preset Time after opening.
2. circuit control module according to claim 1, is characterized in that: described flame proof electromagnet also comprises buck current detection module and Inrush current restraining module with circuit control module; Described buck current detection module is connected with time delay handover module, the current value of the buck current of exporting for detection of time delay handover module, this buck current feeds back to voltage reduction module by Inrush current restraining module, and whether the step-down voltage that voltage reduction module inputs to time delay handover module according to this buck current value judgement meets the requirements; Described Inrush current restraining module causes voltage reduction module misoperation for preventing the buck current value mutation of buck current detection module output.
3. circuit control module according to claim 1, is characterized in that: also comprise rectification circuit, be arranged between input module and voltage reduction module.
4. circuit control module according to claim 2, is characterized in that: also comprise overheat protector module, anti-oscillation module and short circuit protection module; Described overheat protector module is connected with voltage reduction module is two-way, for preventing voltage reduction module excess Temperature; Described anti-oscillation module is arranged between time delay handover module and output module, for preventing the fluctuation of time delay switching output module output voltage; Described short circuit protection module is connected with buck current detection module, for preventing short circuit.
5. circuit control module according to claim 4, is characterized in that: described voltage reduction module, buck current detection module, Inrush current restraining module, overheat protector module, anti-oscillation module and short circuit protection module are integrated in XL2009 chip and peripheral circuit; Described peripheral circuit comprises inductance L 1, metal-oxide-semiconductor Q1, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, diode D1, diode D2, diode D3, resistance R 1, resistance R 2, resistance R 3 and resistance R 4; Inductance L 1 one end access XL2009 chip five-port, the 6th port and diode D2 backward end, the other end accesses respectively capacitor C 3 first ends, diode D3 backward end and output buck voltage; Diode D2 forward end accesses respectively C3 the second end and diode D3 forward end; Initial voltage access XL2009 chip the 4th port also accesses respectively capacitor C 2 and capacitor C 4 first ends; Capacitor C 4 second terminations enter XL2009 chip the 3rd port; Resistance R 2 one end access XL2009 chip the 4th ports, the other end accesses respectively capacitor C 1 first end, resistance R 3 first ends, diode D1 backward end and metal-oxide-semiconductor Q1 grid; Diode D1 forward end, resistance R 3 second ends, capacitor C 1 second end and the equal ground connection of metal-oxide-semiconductor source class; Metal-oxide-semiconductor Q1 drain electrode access capacitor C 2 second ends; XL2009 chip the second end is by resistance R 1 access initial voltage; XL2009 chip first end is by resistance R 4 output buck voltages.
6. circuit control module according to claim 5, it is characterized in that: described initial voltage is 24V, step-down voltage is 8V, described inductance L 1 value 40-50uH, described capacitor C 1 value 0.5-2uF, capacitor C 2 value 70-120uF, capacitor C 3 value 70-100uF, capacitor C 4 value 0.5-1uF, resistance R 1 value 15-16.5K ohm, resistance R 2 value 40-50K ohms, resistance R 3 value 19-19.5 ohms, resistance R 4 value 40-50K ohms.
7. a flame proof electromagnet, is characterized in that: comprise connector assembly, wire, circuit control module and coil as described in claim 1 to 6 any one; Described connector assembly access external voltage is also delivered to circuit control module by wire, and circuit control module drive coil obtains electric.
8. flame proof electromagnet according to claim 7, is characterized in that: also comprise shell, magnetic core-pipe subassembly and push rod; Magnetic core-pipe subassembly is surrounded by coil, and push rod is arranged in magnetic core-pipe subassembly, when coil obtains when electric, thereby magnetic core-pipe subassembly produces magnetic force, push rod is ejected open electromagnet.
9. flame proof electromagnet according to claim 8, is characterized in that: epoxy resin is filled up in described enclosure gap, and silicon rubber is filled with in connector assembly port; Coil and shell spacing after the coated multilayer insulation adhesive tape of coil periphery and coated insulation adhesive tape are not less than 0.8 millimeter.
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