CN203632225U - Flame-proof high-low voltage electromagnetic starter used intelligent protection device - Google Patents
Flame-proof high-low voltage electromagnetic starter used intelligent protection device Download PDFInfo
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- CN203632225U CN203632225U CN201320833225.6U CN201320833225U CN203632225U CN 203632225 U CN203632225 U CN 203632225U CN 201320833225 U CN201320833225 U CN 201320833225U CN 203632225 U CN203632225 U CN 203632225U
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Abstract
The utility model discloses a flame-proof high-low voltage electromagnetic starter used intelligent protection device. The intelligent protection device comprises a controller, a three-phase voltage detection unit for detecting three-phase voltages of a power circuit of an electromagnetic starter to be protected, a three-phase current detection unit for detecting three-phase currents of the power circuit, a zero-sequence current detection unit for detecting a zero-sequence current of the power circuit in real time, and a circuit breaker QF having a main contact connected in the power circuit in series. The main contact is a normally opened contact. The three-phase voltage detection unit, the three-phase current detection unit and the zero-sequence current detection unit are all connected with the controller. The controller adopts a chip LM3108K. The intelligent protection device provided by the utility model has the advantages of simple circuitry, reasonable design, convenient wiring, simple operation and good use effects, solving various problems existing in the conventional electromagnetic starter intelligent protection device. The intelligent protection device has high operation reliability and high anti-interference ability, and achieves the safe and reliable protection for a mine electromagnetic starter.
Description
Technical field
The utility model relates to a kind of intelligent protection device, especially relates to a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device.
Background technology
Flame-proof mine high-low pressure electromagnetic starter intelligent protection device is that electromagnetic starter is occurred to electric leakage, short circuit, overload, phase shortage, overvoltage, the fault such as under-voltage carry out the intelligent protection device of integrated protection, has that external circuit is simple, protection reliability advantages of higher compared with the protective circuit of mining non intelligent type electromagnetic starter.At present, mining electromagnetic starter intelligent protection device mainly adopts DSP or single-chip microcomputer as its main control unit, and it exists peripheral hardware circuit structure complexity, Installation and Debugging defect and the deficiency such as difficulty, programming is complicated, failure rate is higher, poor anti jamming capability relatively.Therefore, nowadays research and develop a kind of circuit simple, reasonable in design and Installation and Debugging and use easy and simple to handle, the flame-proof mine high-low pressure electromagnetic starter intelligent protection device that result of use is good, it can effectively solve the peripheral hardware circuit structure complexity that existing electromagnetic starter intelligent protection device exists, Installation and Debugging are difficulty relatively, programming is complicated, failure rate is higher, the problems such as poor anti jamming capability, there is functional reliability high, the features such as antijamming capability is strong, can realize mine electromagnetic starter safety and reliably protecting, significant to the safe operation of mine electromechanical equipment.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art; a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device is provided; its circuit is simple, reasonable in design, easy-to-connect and use easy and simple to handle, result of use good, can effectively solve the various problems that existing electromagnetic starter intelligent protection device exists.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device, it is characterized in that: comprise controller, the three-phase voltage of the power loop to protected electromagnetic starter carries out respectively the three-phase voltage detecting unit detecting in real time, the three-phase current of described power loop is carried out respectively to the three-phase current detection unit detecting in real time, zero-sequence current detecting unit and main contacts that the zero-sequence current of described power loop is carried out detecting are in real time serially connected in the circuit breaker Q F in described power loop, the main contacts of circuit breaker Q F is normally opened contact, described three-phase voltage detecting unit, described three-phase current detection unit and described zero-sequence current detecting unit all join with described controller, described controller is chip LM3108K, one end of the solenoid BJ of blocking relay BJ and the device for under-voltage releasing equipment coil Q of circuit breaker Q F and shunt release coil F all connects an output of power supply V1, the 0.1-output of another chip termination LM3108K of device for under-voltage releasing equipment coil Q, the shunt release coil F other end connects the 0.2-output of chip LM3108K after the auxiliary contact QF1 of circuit breaker Q F, the 0.1+ output of chip LM3108K and 0.2+ output all connect another output of power supply V1, auxiliary contact QF1 is normally opened contact, the 0.2-output of another termination LM3108K of solenoid BJ, the 0.0+ output of a chip termination LM3108K of the solenoid ZJ of intermediate relay ZJ, an output of the 0.0-output termination power V2 of chip LM3108K, the other end of solenoid ZJ connects another output of power supply V2 after the normally-closed contact BJ1 of blocking relay BJ, the normally opened contact ZJ of intermediate relay ZJ is serially connected in the current supply circuit of solenoid QF of circuit breaker Q F, 0.1 input of chip LM3108K and the positive output end of D.C. regulated power supply join and between the two, are serially connected with the auxiliary contact QF3 of circuit breaker Q F, and auxiliary contact QF3 is normally opened contact.
Above-mentioned a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device, is characterized in that: 0.2 input of chip LM3108K joins with the start-stop transducer that the start-stop state of institute's dress blower fan in coal mine down-hole tunnel is detected.
Above-mentioned a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device; it is characterized in that: also comprise the manual switch K1 that circuit breaker Q F is carried out to shunted exciter tripping control, one end of described manual switch K1 and the positive output end of D.C. regulated power supply joins and 0.5 input of its other end and chip LM3108K joins.
Above-mentioned a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device, is characterized in that: the AI1 of chip LM3108K and AI-input join with the gas concentration sensor that the gas density in coal mine down-hole tunnel carries out detecting in real time respectively.
Above-mentioned a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device, is characterized in that: the zero sequence voltage detection unit that also comprises leakage protection circuit and join with described leakage protection circuit.
Above-mentioned a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device, is characterized in that: described zero sequence voltage detection unit and described leakage protection circuit all join with described controller; Described three-phase voltage detecting unit is three-phase synchronous reactor STKB, and three output UA, UB and the UC of three-phase synchronous reactor STKB join with UA, UB and tri-inputs of UC of chip LM3108K respectively; Described three-phase current detection unit comprises threephase current transformer LH, and three output IA, IB and the IC of threephase current transformer LH join with IA, IB and tri-inputs of IC of chip LM3108K respectively; Described zero-sequence current detecting unit is zero sequence current mutual inductor LB, and the I0 input of the output of zero sequence current mutual inductor LB and chip LM3108K joins.
Above-mentioned a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device, it is characterized in that: described three-phase voltage detecting unit is three-phase synchronous reactor STKB, described zero sequence voltage detection unit is the transformer BK2 joining with three-phase synchronous reactor STKB, first siding ring one end of transformer BK2 and the neutral point of three-phase synchronous reactor STKB joins and the other end of its first siding ring ground connection after capacitor C 1, second siding ring one end ground connection of transformer BK2 and its other end are U0 output, U0 output divides two-way, wherein the U0 input of a road and chip LM3108K joins, another road joins with the RL input of chip LM3108K after resistance R 2, between U0 output and U0 input, be serially connected with electric-controlled switch one, between U0 output and RL input, be serially connected with electric-controlled switch two, RL input is ground connection after capacitor C 2.
Above-mentioned a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device; it is characterized in that: also comprise leakage tripping hookup; described leakage tripping hookup comprises resistance R 1; one end of resistance R 1 joins with the A of described power loop, B or C phase cable and its other end joins with the earth terminal of chip LM3108K after leakage tripping test button LS, between leakage tripping test button LS and the earth terminal of chip LM3108K, is serially connected with electric-controlled switch three.
Above-mentioned a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device, is characterized in that: described electric-controlled switch one, electric-controlled switch two and electric-controlled switch three are integrated into triac device ZK1; Triac device ZK1 comprises three plug-in strips, three described plug-in strips are respectively the plug-in strip three that the connecting circuit between U0 output and U0 input is carried out the plug-in strip one of switch control, the connecting circuit between U0 output and RL input is carried out the plug-in strip two of switch control and the connecting circuit between leakage tripping test button LS and the earth terminal of chip LM3108K is carried out to switch control, and the common port of described plug-in strip one, plug-in strip two and plug-in strip three joins with U0 input, RL input and the earth terminal of chip LM3108K respectively; Two contacts of described plug-in strip one, plug-in strip two and plug-in strip three are zk contact and Fk contact, the Fk contact of U0 output and described plug-in strip one joins, the zk contact of described plug-in strip two and the first siding ring of transformer BK2 join, and the zk contact of described plug-in strip three and leakage tripping test button LS join; Between the zk contact of described plug-in strip two and its common port, be connected to the auxiliary contact one of circuit breaker Q F, be connected to the auxiliary contact two of circuit breaker Q F between the zk contact of described plug-in strip three and its common port, auxiliary contact one and auxiliary contact two are normally-closed contact.
Above-mentioned a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device, is characterized in that: power supply V1 and power supply V2 are AC power or are DC power supply, the power supply of solenoid QF is AC power or DC power supply.
The utility model compared with prior art has the following advantages:
1, simple, the reasonable in design and easy-to-connect of circuit, input cost is lower.
2, use easy and simple to handle and result of use good, due to the inner integrated three-phase ac signal acquisition and processing module of chip LM3108K, can directly sample to three-phase ac signal and process, realize the overload of electromagnetic starter, short circuit, phase shortage, three-phase imbalance, under-voltage, overvoltage, the intelligent comprehensive protection of the faults such as electric leakage, and there is peripheral circuits design, reduce programming difficulty and improve the advantages such as protective device reliability and antijamming capability, thereby realize mine electromagnetic starter safety and reliably protecting, significant to the safe operation of mine electromechanical equipment.In addition, realize good man-machine interaction by display, show network operation state and parameters of electric power, before switch closes a floodgate, circulation shows state of insulation, the action setting value of electrical network; After switch closes a floodgate and while normally work, circulation shows the running parameter of electrical network and insulation level over the ground, and after fault trip, circulation shows fault parameter and malfunction, thereby has greatly improved electromagnetic starter failure diagnosis efficiency.
In sum; the utility model circuit is simple, reasonable in design, easy-to-connect and use easy and simple to handle, result of use good; can effectively solve peripheral hardware circuit structure complexity, the Installation and Debugging problem such as difficulty, programming is complicated, failure rate is higher, poor anti jamming capability relatively that existing electromagnetic starter intelligent protection device exists; there is the features such as functional reliability is high, antijamming capability is strong, can realize mine electromagnetic starter safety and reliably protecting.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Description of reference numerals:
1-start-stop transducer.
Embodiment
As shown in Figure 1; the utility model comprise three-phase voltage detecting unit that the three-phase voltage of controller, power loop to protected electromagnetic starter carries out respectively detecting in real time, to the three-phase current of described power loop carry out respectively the three-phase current detection unit detecting in real time, zero-sequence current detecting unit and the main contacts that the zero-sequence current of described power loop is carried out detecting is in real time serially connected in the circuit breaker Q F in described power loop, the main contacts of circuit breaker Q F is normally opened contact.Described three-phase voltage detecting unit, described three-phase current detection unit and described zero-sequence current detecting unit all join with described controller.Described controller is chip LM3108K.One end of the solenoid BJ of blocking relay BJ and the device for under-voltage releasing equipment coil Q of circuit breaker Q F and shunt release coil F all connects an output of power supply V1, the 0.1-output of another chip termination LM3108K of device for under-voltage releasing equipment coil Q, the shunt release coil F other end connects the 0.2-output of chip LM3108K after the auxiliary contact QF1 of circuit breaker Q F, the 0.1+ output of chip LM3108K and 0.2+ output all connect another output of power supply V1, auxiliary contact QF1 is normally opened contact, the 0.2-output of another termination LM3108K of solenoid BJ; The 0.0+ output of a chip termination LM3108K of the solenoid ZJ of intermediate relay ZJ, an output of the 0.0-output termination power V2 of chip LM3108K, the other end of solenoid ZJ connects another output of power supply V2 after the normally-closed contact BJ1 of blocking relay BJ.The normally opened contact ZJ of intermediate relay ZJ is serially connected in the current supply circuit of solenoid QF of circuit breaker Q F.0.1 input of chip LM3108K and the positive output end of D.C. regulated power supply join and between the two, are serially connected with the auxiliary contact QF3 of circuit breaker Q F, and auxiliary contact QF3 is normally opened contact.
Meanwhile, the utility model also comprises the display joining with described controller.
In the present embodiment, 0.2 input of chip LM3108K joins with the start-stop transducer 1 that the start-stop state of institute's dress blower fan in coal mine down-hole tunnel is detected.
In the present embodiment, the utility model also comprises the manual switch K1 that circuit breaker Q F is carried out to shunted exciter tripping control, one end of described manual switch K1 and the positive output end of D.C. regulated power supply joins and 0.5 input of its other end and chip LM3108K joins.When actual use, realize the long-range shunted exciter tripping of circuit breaker Q F by manual switch K1.
In the present embodiment, the AI1 of chip LM3108K and AI-input join with the gas concentration sensor that the gas density in coal mine down-hole tunnel carries out detecting in real time respectively.
Meanwhile, the zero sequence voltage detection unit that the utility model also comprises leakage protection circuit and joins with described leakage protection circuit.
In the present embodiment, described zero sequence voltage detection unit and described leakage protection circuit all join with described controller.Described three-phase voltage detecting unit is three-phase synchronous reactor STKB, and three output UA, UB and the UC of three-phase synchronous reactor STKB join with UA, UB and tri-inputs of UC of chip LM3108K respectively; Described three-phase current detection unit comprises threephase current transformer LH, and three output IA, IB and the IC of threephase current transformer LH join with IA, IB and tri-inputs of IC of chip LM3108K respectively; Described zero-sequence current detecting unit is zero sequence current mutual inductor LB, and the I0 input of the output of zero sequence current mutual inductor LB and chip LM3108K joins.
Described three-phase voltage detecting unit is three-phase synchronous reactor STKB, described zero sequence voltage detection unit is the transformer BK2 joining with three-phase synchronous reactor STKB, first siding ring one end of transformer BK2 and the neutral point of three-phase synchronous reactor STKB joins and the other end of its first siding ring ground connection after capacitor C 1, second siding ring one end ground connection of transformer BK2 and its other end are U0 output, U0 output divides two-way, wherein the U0 input of a road and chip LM3108K joins, and another road joins with the RL input of chip LM3108K after resistance R 2; Between U0 output and U0 input, be serially connected with electric-controlled switch one, between U0 output and RL input, be serially connected with electric-controlled switch two, RL input is ground connection after capacitor C 2.
In addition, the utility model also comprises leakage tripping hookup, described leakage tripping hookup comprises resistance R 1, one end of resistance R 1 joins with the A of described power loop, B or C phase cable and its other end joins with the earth terminal of chip LM3108K after leakage tripping test button LS, between leakage tripping test button LS and the earth terminal of chip LM3108K, is serially connected with electric-controlled switch three.
In the present embodiment, described electric-controlled switch one, electric-controlled switch two and electric-controlled switch three are integrated into triac device ZK1.Triac device ZK1 comprises three plug-in strips, three described plug-in strips are respectively the plug-in strip three that the connecting circuit between U0 output and U0 input is carried out the plug-in strip one of switch control, the connecting circuit between U0 output and RL input is carried out the plug-in strip two of switch control and the connecting circuit between leakage tripping test button LS and the earth terminal of chip LM3108K is carried out to switch control, and the common port of described plug-in strip one, plug-in strip two and plug-in strip three joins with U0 input, RL input and the earth terminal of chip LM3108K respectively; Two contacts of described plug-in strip one, plug-in strip two and plug-in strip three are zk contact and Fk contact, the Fk contact of U0 output and described plug-in strip one joins, the zk contact of described plug-in strip two and the first siding ring of transformer BK2 join, and the zk contact of described plug-in strip three and leakage tripping test button LS join; Between the zk contact of described plug-in strip two and its common port, be connected to the auxiliary contact one of circuit breaker Q F, be connected to the auxiliary contact two of circuit breaker Q F between the zk contact of described plug-in strip three and its common port, auxiliary contact one and auxiliary contact two are normally-closed contact.
In the present embodiment, described auxiliary contact one and auxiliary contact two adopt same auxiliary contact QF4.
When actual use, power supply V1 and power supply V2 are AC power or are DC power supply, and the power supply of solenoid QF is AC power or DC power supply.
In the present embodiment, power supply V1 and power supply V2 are AC power, and the power supply of solenoid QF is that AC power and its are power supply V1.
In the present embodiment, the utility model also comprises the transformer BK1 being connected on described power loop, transformer BK1 comprises two second siding rings, and two described second siding rings are respectively the second siding ring one of output 220V alternating current and the second siding ring two of output 10V alternating current; One end of solenoid BJ, device for under-voltage releasing equipment coil Q and shunt release coil F and the 0.0-output of chip LM3108K all join with an output of described second siding ring one, the other end of the 0.1+ output of chip LM3108K and 0.2+ output and solenoid ZJ all connects another output of described second siding ring one after normally-closed contact BJ1, and the two ends of solenoid QF join with two outputs of described second siding ring one respectively.Herein, power supply V1 is the second siding ring one of transformer BK1, and power supply V2 is the second siding ring one of transformer BK1.
When physical cabling, the equal ground connection in one end of solenoid BJ, device for under-voltage releasing equipment coil Q and shunt release coil F.The first siding ring of transformer BK1 and described power loop join.Meanwhile, the A phase of the first siding ring of transformer BK1 and described power loop and C phase cable joins and the two between be connected in series control switch GK.In the present embodiment, also comprise terminal block JD, the A phase of described power loop and C phase cable join by two binding posts on stube cable and terminal block JD respectively, and the first siding ring of transformer BK1 joins by the multiple binding posts on stube cable and terminal block JD.The US input of one end ground connection of the second siding ring two of transformer BK1 and its other end and chip LM3108K joins.
In the present embodiment, the output voltage of described D.C. regulated power supply is 24V.
Meanwhile, the utility model also comprises opening button SB1, and the two ends of opening button SB1 join with 0.2-output and the 0.2+ output of chip LM3108K respectively.
In actual use procedure, when circuit breaker Q F is closed a floodgate, process is as follows: control switch GK closes, transformer BK1 obtains electric, chip LM3108K obtains electric, three-phase synchronous reactor STKB matches described power loop is carried out to megger test with transformer BK2 afterwards, and leaking electricity, US input terminal voltage is normal, gas density does not transfinite and blower fan does not occur in open mode in the situation of locking, chip LM3108K sends reclosing command, the solenoid of intermediate relay ZJ obtains electric adhesive, normally opened contact ZJ closure, the closing coil (being solenoid QF) of circuit breaker obtains electric adhesive, thereby realizing circuit breaker Q F closes a floodgate.
When reality is carried out separating brake to circuit breaker Q F, press opening button SB1, the blocking coil (being that solenoid BJ obtains electric adhesive) of circuit breaker Q F, the trip gear of circuit breaker Q F is threaded off, thereby realizes circuit breaker Q F tripping operation.When actual use, circuit breaker Q F comprises three kinds of dropout modes: shunted exciter tripping, undervoltage tripping and hand tripping.
Actual while carrying out overcurrent protection, the 0.2-output of chip LM3108K and 0.2+ output time delay output protection response signal, now shunt release coil F obtain electric, circuit breaker Q F tripping operation; Meanwhile, solenoid BJ obtains electric implementation locking.When, overvoltage protection under-voltage when carrying out, the 0.1-output of chip LM3108K and 0.1+ output time delay output protection response signal, device for under-voltage releasing equipment coil Q discharges, circuit breaker Q F tripping operation.
In the present embodiment, the earth leakage protective adopting is selective earth leakage protection circuit, and transformer BK2 provides residual voltage for selective earth leakage protection circuit.When actual use, when triac device ZK1 is during in Fk position, the second siding ring of transformer BK2 and chip LM3108K connection, now could realize earth leakage protective.When triac device ZK1 is during in zk position, transformer BK2 exits, and now the utility model can only be realized earth leakage search/lockout and leakage tripping; And when triac device ZK1 is during in Fk position, could realize earth leakage protective.
Wherein, when the utility model carries out leakage latching protection, before circuit breaker Q F closes a floodgate, auxiliary contact QF4 is in closure state, and resistance R 2 accesses and carries out earth leakage search/lockout test.Actual carrying out earth leakage search/lockout when test, chip LM3108K, resistance R 2 and three-phase synchronous reactor SKTB match described power loop are carried out to insulation against ground resistance test.In the time leaking electricity, the solenoid of intermediate relay ZJ obtains electric adhesive, circuit breaker Q F closes a floodgate, and after circuit breaker Q F combined floodgate, chip LM3108K, resistance R 2 and three-phase synchronous reactor SKTB match the insulation against ground resistance of described power loop is carried out to Real-Time Monitoring; If there is earth fault, circuit breaker Q F can not close a floodgate, and is earth leakage search/lockout.
In actual moving process, if there is electric leakage, the 0.1-output of chip LM3108K and 0.1+ output time delay output protection response signal, device for under-voltage releasing equipment coil Q discharges, circuit breaker Q F tripping operation.
When triac device ZK1 is during in Fk position, the second siding ring of transformer BK2 and chip LM3108K connect, and the utility model is while carrying out earth leakage protective, and transformer BK2 is connected with chip LM3108K, thus the earth leakage protective of realization.In the time that need carry out leakage tripping test, press leak(age) test button LS, be now leak(age) test resistance R 1 ground connection, circuit breaker Q F tripping operation.
In addition, the utlity model has gas density transfinite locking and lock between air and electricity function.In the time that the gas density in coal mine down-hole tunnel transfinites, chip LM3108K output protection response signal, circuit breaker Q F tripping operation; In the time that in coal mine down-hole tunnel, institute's dress blower fan is in closed condition, chip LM3108K output protection response signal, circuit breaker Q F tripping operation.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification of above embodiment being done according to the utility model technical spirit, change and equivalent structure change, and all still belong in the protection range of technical solutions of the utility model.
Claims (10)
1. a flame-proof type high-low pressure electromagnetic starter intelligent protection device, it is characterized in that: three-phase voltage detecting unit that the three-phase voltage that comprises controller, power loop to protected electromagnetic starter carries out respectively detecting in real time, to the three-phase current of described power loop carry out respectively the three-phase current detection unit detecting in real time, zero-sequence current detecting unit and the main contacts that the zero-sequence current of described power loop is carried out detecting is in real time serially connected in the circuit breaker Q F in described power loop, the main contacts of circuit breaker Q F is normally opened contact; Described three-phase voltage detecting unit, described three-phase current detection unit and described zero-sequence current detecting unit all join with described controller; Described controller is chip LM3108K; One end of the solenoid BJ of blocking relay BJ and the device for under-voltage releasing equipment coil Q of circuit breaker Q F and shunt release coil F all connects an output of power supply V1, the 0.1-output of another chip termination LM3108K of device for under-voltage releasing equipment coil Q, the shunt release coil F other end connects the 0.2-output of chip LM3108K after the auxiliary contact QF1 of circuit breaker Q F, the 0.1+ output of chip LM3108K and 0.2+ output all connect another output of power supply V1, auxiliary contact QF1 is normally opened contact, the 0.2-output of another termination LM3108K of solenoid BJ; The 0.0+ output of a chip termination LM3108K of the solenoid ZJ of intermediate relay ZJ, an output of the 0.0-output termination power V2 of chip LM3108K, the other end of solenoid ZJ connects another output of power supply V2 after the normally-closed contact BJ1 of blocking relay BJ; The normally opened contact ZJ of intermediate relay ZJ is serially connected in the current supply circuit of solenoid QF of circuit breaker Q F; 0.1 input of chip LM3108K and the positive output end of D.C. regulated power supply join and between the two, are serially connected with the auxiliary contact QF3 of circuit breaker Q F, and auxiliary contact QF3 is normally opened contact.
2. according to a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device claimed in claim 1, it is characterized in that: 0.2 input of chip LM3108K joins with the start-stop transducer (1) that the start-stop state of institute's dress blower fan in coal mine down-hole tunnel is detected.
3. according to a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device described in claim 1 or 2; it is characterized in that: also comprise the manual switch K1 that circuit breaker Q F is carried out to shunted exciter tripping control, one end of described manual switch K1 and the positive output end of D.C. regulated power supply joins and 0.5 input of its other end and chip LM3108K joins.
4. according to a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device described in claim 1 or 2, it is characterized in that: the AI1 of chip LM3108K and AI-input join with the gas concentration sensor that the gas density in coal mine down-hole tunnel carries out detecting in real time respectively.
5. according to a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device described in claim 1 or 2, it is characterized in that: the zero sequence voltage detection unit that also comprises leakage protection circuit and join with described leakage protection circuit.
6. according to a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device claimed in claim 5, it is characterized in that: described zero sequence voltage detection unit and described leakage protection circuit all join with described controller; Described three-phase voltage detecting unit is three-phase synchronous reactor STKB, and three output UA, UB and the UC of three-phase synchronous reactor STKB join with UA, UB and tri-inputs of UC of chip LM3108K respectively; Described three-phase current detection unit comprises threephase current transformer LH, and three output IA, IB and the IC of threephase current transformer LH join with IA, IB and tri-inputs of IC of chip LM3108K respectively; Described zero-sequence current detecting unit is zero sequence current mutual inductor LB, and the I0 input of the output of zero sequence current mutual inductor LB and chip LM3108K joins.
7. according to a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device claimed in claim 6, it is characterized in that: described three-phase voltage detecting unit is three-phase synchronous reactor STKB, described zero sequence voltage detection unit is the transformer BK2 joining with three-phase synchronous reactor STKB, first siding ring one end of transformer BK2 and the neutral point of three-phase synchronous reactor STKB joins and the other end of its first siding ring ground connection after capacitor C 1, second siding ring one end ground connection of transformer BK2 and its other end are U0 output, U0 output divides two-way, wherein the U0 input of a road and chip LM3108K joins, another road joins with the RL input of chip LM3108K after resistance R 2, between U0 output and U0 input, be serially connected with electric-controlled switch one, between U0 output and RL input, be serially connected with electric-controlled switch two, RL input is ground connection after capacitor C 2.
8. according to a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device claimed in claim 7; it is characterized in that: also comprise leakage tripping hookup; described leakage tripping hookup comprises resistance R 1; one end of resistance R 1 joins with the A of described power loop, B or C phase cable and its other end joins with the earth terminal of chip LM3108K after leakage tripping test button LS, between leakage tripping test button LS and the earth terminal of chip LM3108K, is serially connected with electric-controlled switch three.
9. according to a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device claimed in claim 8, it is characterized in that: described electric-controlled switch one, electric-controlled switch two and electric-controlled switch three are integrated into triac device ZK1; Triac device ZK1 comprises three plug-in strips, three described plug-in strips are respectively the plug-in strip three that the connecting circuit between U0 output and U0 input is carried out the plug-in strip one of switch control, the connecting circuit between U0 output and RL input is carried out the plug-in strip two of switch control and the connecting circuit between leakage tripping test button LS and the earth terminal of chip LM3108K is carried out to switch control, and the common port of described plug-in strip one, plug-in strip two and plug-in strip three joins with U0 input, RL input and the earth terminal of chip LM3108K respectively; Two contacts of described plug-in strip one, plug-in strip two and plug-in strip three are zk contact and Fk contact, the Fk contact of U0 output and described plug-in strip one joins, the zk contact of described plug-in strip two and the first siding ring of transformer BK2 join, and the zk contact of described plug-in strip three and leakage tripping test button LS join; Between the zk contact of described plug-in strip two and its common port, be connected to the auxiliary contact one of circuit breaker Q F, be connected to the auxiliary contact two of circuit breaker Q F between the zk contact of described plug-in strip three and its common port, auxiliary contact one and auxiliary contact two are normally-closed contact.
10. according to a kind of flame-proof type high-low pressure electromagnetic starter intelligent protection device described in claim 1 or 2; it is characterized in that: power supply V1 and power supply V2 are AC power or are DC power supply, the power supply of solenoid QF is AC power or DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320833225.6U CN203632225U (en) | 2013-12-16 | 2013-12-16 | Flame-proof high-low voltage electromagnetic starter used intelligent protection device |
Applications Claiming Priority (1)
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| CN201320833225.6U CN203632225U (en) | 2013-12-16 | 2013-12-16 | Flame-proof high-low voltage electromagnetic starter used intelligent protection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276012A (en) * | 2017-08-14 | 2017-10-20 | 石家庄博发科技有限公司 | A kind of quick networking intelligent line protection device |
| CN109883985A (en) * | 2019-02-18 | 2019-06-14 | 西安科技大学 | A kind of nanometer acoustic effect analysis method based on molecule power theory |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276012A (en) * | 2017-08-14 | 2017-10-20 | 石家庄博发科技有限公司 | A kind of quick networking intelligent line protection device |
| CN109883985A (en) * | 2019-02-18 | 2019-06-14 | 西安科技大学 | A kind of nanometer acoustic effect analysis method based on molecule power theory |
| CN109883985B (en) * | 2019-02-18 | 2021-03-26 | 西安科技大学 | Nano acoustic effect analysis method based on molecular dynamics theory |
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