CN206685878U - Underground coal mine starter uncovering power-off warning circuit - Google Patents
Underground coal mine starter uncovering power-off warning circuit Download PDFInfo
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- CN206685878U CN206685878U CN201720360998.5U CN201720360998U CN206685878U CN 206685878 U CN206685878 U CN 206685878U CN 201720360998 U CN201720360998 U CN 201720360998U CN 206685878 U CN206685878 U CN 206685878U
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Abstract
The utility model belongs to coal mine field, propose a kind of underground coal mine starter uncovering power-off warning circuit, including auxiliary reclay J1, transformer T1, rectifier circuit, filter circuit, mu balanced circuit, multiple electrochemical capacitors, oscillating circuit, signal amplification circuit and warning circuit；Three phase mains is through disconnecting switch HK, transformer T1, rectifier circuit, powered after filter circuit and mu balanced circuit to oscillating circuit and signal amplification circuit, the output signal of oscillating circuit is powered after signal discharge circuit to auxiliary reclay J1, auxiliary reclay J1 normally opened contact J1 2 is arranged in series in feeding switch control loop, auxiliary reclay J1 normally-closed contact J1 1 is arranged in series the warning circuit institute in the loop, the secondary coil of oscillating circuit is arranged between feeding switch breaker CJ and starter, the normally-closed contact of the travel switch of switch epicoele is connected between any two-phase after being connected respectively with electrochemical capacitor, the utility model improves the security of underground coal mine service work.
Description
Technical field
It the utility model is related to coal mine field, and in particular to a kind of underground coal mine uncovering power-off warning circuit.
Background technology
In an electric power system of underground coal mine, a feed is with many switches, such as belt, tensioner car, water pump, photograph
Clear signal, haulage gear etc..According to coal mine downhole safety construction requirement, as long as carrying out inspection of uncapping to any of which starter
When repairing, the feeding switch should all be had a power failure, and locking feeding switch.But reality is, due to the startup of each circuit
Device each independence and is arranged on different places, and the usage time of each starter is inconsistent, and operating personnel are also different,
And the conflict of production and maintenance, or the inertia of operating personnel and maloperation, it all may result in and do not have a power failure in feeding switch
Or feeding switch have a power failure it is non-latching in the case of, certain starter is uncapped, and such case very likely causes personnel to touch
Electrification, or short circuit are triggering the danger such as coal dust gas explosion.Therefore, it is necessary to research and develop a kind of starter uncovering power-off alarm electricity
Road, to solve above-mentioned potential safety hazard.
Utility model content
The utility model overcomes the shortcomings of the prior art, and technical problem to be solved is：There is provided one kind can keep away
Exempt to uncap and overhaul the underground coal mine uncovering power-off warning circuit for the potential safety hazard for not carrying out locking to feeding switch.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of underground coal mine starter is opened
Lid cut-offing alarming circuit, three phase mains are connected with multiple magnetic starters respectively after feeding switch breaker CJ, the power-off
Warning circuit includes auxiliary reclay J1, transformer T1, rectifier circuit, filter circuit, mu balanced circuit and the magnetic force and started
Device multiple electrochemical capacitors correspondingly, oscillating circuit, signal amplification circuit and warning circuit；Any two-phase warp of three phase mains
Primary side after disconnecting switch HK with transformer T1 is connected, and transformer T1 secondary side exchanges input with the rectifier circuit
End connects, and is connected after the filtered circuit of DC output end of the rectifier circuit with the input of mu balanced circuit, the voltage stabilizing
The output end of circuit is connected with the power input of oscillating circuit and signal amplification circuit；The oscillating circuit includes oscillator,
Oscillator primary coil L1 signal output part is connected with the signal input part of the signal amplification circuit, the signal amplification electricity
It is grounded after the signal output part concatenation auxiliary reclay J1 on road coil, in feeding switch control loop, auxiliary reclay J1's
Normally opened contact J1-2 is connected in series in both ends of power, auxiliary reclay J1 normally-closed contact J1-3 with feeding switch closing relay
In parallel with feeding switch opening button, auxiliary reclay J1 normally-closed contact J1-1 is arranged in series loop where the warning circuit
In；Oscillator secondary coil L2 is arranged between feeding switch breaker CJ and the multiple magnetic starter, the multiple magnetic
The normally-closed contact of the travel switch of the switch epicoele of power starter is connected to appointing for three phase mains after being connected respectively with electrochemical capacitor
Between two-phase of anticipating.
The multiple magnetic starter includes signaling switch, belt shipper, tensioner stopping switch, haulage gear switch and water
Switch pump, the multiple electrochemical capacitor include the first electrochemical capacitor, the second electrochemical capacitor, the 3rd electrochemical capacitor, the 4th electrolysis electricity
Hold and the 5th electrochemical capacitor；The normally-closed contact of the travel switch of the signaling switch epicoele is connected after being connected with the first electrochemical capacitor
Between any two-phase of three phase mains；The normally-closed contact of the travel switch of the belt shipper epicoele and the second electrochemical capacitor string
It is connected to after connection between any two-phase of three phase mains；The normally-closed contact and the 3rd of the travel switch of the tensioner stopping switch epicoele
It is connected to after electrochemical capacitor series connection between any two-phase of three phase mains；The haulage gear switchs the normal of the travel switch of epicoele
Closed contact is connected between any two-phase of three phase mains after being connected with the 4th electrochemical capacitor；The stroke of the pump switch epicoele
The normally-closed contact of switch is connected between any two-phase of three phase mains after being connected with the 5th electrochemical capacitor.
The electrochemical capacitor is 2 μ F, 1kV for high frequency capacitance, its parameter.
The filter circuit includes the electrolysis electricity being connected in parallel between the DC output end both positive and negative polarity of the rectifier circuit 101
Hold C1 and electric capacity C6, the mu balanced circuit includes model W7815 integrated regulator and is connected in parallel on the integrated voltage-stabilized
The electrochemical capacitor C7 at device output positive and negative charge both ends, in the oscillating circuit 104, the positive pole string of the output voltage of mu balanced circuit 103
After connecting resistance R1, electric capacity C8 and oscillator primary coil L1, it is connected with the negative pole of the output voltage of mu balanced circuit 103, voltage stabilizing electricity
The negative pole ground connection of the output voltage of road 103；Triode BG1 colelctor electrode is connected with the positive pole of the output voltage of equalizing network 103, triode
BG1 base stage is connected with diode D3 negative pole, diode D3 plus earth, triode BG1 emitter stage series resistor R2,
And be connected after slide rheostat W2 with oscillator primary coil L1 O points, oscillator primary coil L1 O points through electric capacity C9 with
The signal input part connection of signal amplification circuit, electric capacity C10 are connected in parallel on oscillator primary coil L1 both ends, oscillator secondary line
After enclosing L2 both ends difference series resistor R14 and electric capacity C12, and series resistor R15 and electric capacity C13, and in major loop three-phase
Any two are connected, and oscillator secondary coil L2 O ' points are connected with another in three-phase.
The signal amplification circuit includes the first operational amplifier V1, the second operational amplifier V2 and the 3rd operational amplifier
It is connected after V3, the cathode series resistance R3 and resistance R4 of stabilized circuit outputting voltage with the negative pole of stabilized circuit outputting voltage, electricity
Resistance R4 both ends simultaneously meet electrochemical capacitor C2, and the first operational amplifier V1 first input end is connected between resistance R3 and resistance R4,
First operational amplifier V1 the second input is connected through electric capacity C9 with primary coil L1 O points, the first operational amplifier V1's
Second input is also grounded by resistance R5, the first operational amplifier V1 output end after resistance R9 with the second operational amplifier
The connection of the second input, the output voltage after the first operational amplifier V1 output end series resistor R6 with the mu balanced circuit
Positive pole connection, it is negative with the output voltage of the mu balanced circuit after the first operational amplifier V1 output end serial capacitance C14
Pole connects；Negative pole after the cathode series resistance R7 and resistance R8 of stabilized circuit outputting voltage with stabilized circuit outputting voltage connects
Connecing, the second operational amplifier V2 first input end is connected between resistance R7 and resistance R8, and the of the second operational amplifier V2
Two inputs are connected through resistance R9 with the output end of the first operational amplifier, and the second operational amplifier V2 the second input is also gone here and there
It is connected after meeting electrochemical capacitor C3 with the negative pole of stabilized circuit outputting voltage, the second operational amplifier V2 output end and diode D6
Positive pole connection, and the first input end with the 3rd operational amplifier V3 after diode D6 is connected；Second operational amplifier
Positive pole of the V2 output end also with diode D5 is connected, and the second input after diode D5 with the second operational amplifier V2
Connection；Negative pole after the cathode series resistance R10 and resistance R11 of stabilized circuit outputting voltage with stabilized circuit outputting voltage connects
Connecing, the output end of the 3rd operational amplifier V3 first input end with the second operational amplifier V2 after diode D6 is connected, and two
It is connected after pole pipe D6 negative pole series resistor R12 with the positive pole of the output voltage of the mu balanced circuit 103, diode D6 negative pole
The negative pole of output voltage after series resistor R13 with mu balanced circuit is connected, the 3rd operational amplifier V3 the second input connection
Between resistance R10 and resistance R11, resistance R11 both ends simultaneously meet electrochemical capacitor C4；3rd operational amplifier V3 output end concatenation
It is connected after first auxiliary reclay J1 coil with the negative pole of stabilized circuit outputting voltage；3rd operational amplifier V3 output end
It is connected to ground after electrochemical capacitor C5 and diode D4 also through being connected in parallel.
The first operational amplifier V1 is model LM339 integration module, the second operational amplifier V2 and the 3rd computing
Amplifier V3 is model LM224 integration module.
After the normally-closed contact J1-1 of the auxiliary reclay J1 is connected in series with the warning circuit, the transformation is arranged on
Between device T1 secondary side and the rectifier circuit.
The utility model has the advantages that compared with prior art：
1st, a kind of underground coal mine starter uncovering power-off warning circuit of the present utility model, including auxiliary reclay J1, change
Depressor T1, rectifier circuit, filter circuit, mu balanced circuit, multiple electrochemical capacitors, oscillating circuit, signal amplification circuit and alarm
Circuit, the normally-closed contact of travel switch is connected in series by the alternate setting of any two on each magnetic starter of underground coal mine
And high frequency capacitance so that once being opened in the case where feeding switch is non-latching, warning circuit is the upper chamber cover of each starter
Alarm is carried out, and fail secure is realized to feeding switch, improves the security of underground coal mine starter maintenance work；
2nd, circuit structure of the present utility model is simple, and cost is cheap；
3rd, fault rate of the present utility model is low, Stability Analysis of Structures.
Brief description of the drawings
Fig. 1 is a kind of circuit connection signal for underground coal mine uncovering power-off warning circuit that the utility model embodiment proposes
Figure；
Fig. 2 is the normally opened contact and normally-closed contact connection diagram of auxiliary reclay in the utility model embodiment.
Embodiment
, below will be to the utility model to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Technical scheme in embodiment is clearly and completely described, it is clear that described embodiment is a part of the present utility model
Embodiment, rather than whole embodiments；Based on the embodiment in the utility model, those of ordinary skill in the art are not making
Go out under the premise of creative work the every other embodiment obtained, belong to the scope of the utility model protection.
As depicted in figs. 1 and 2, be the utility model proposes a kind of underground coal mine uncovering power-off warning circuit specific reality
The circuit connection diagram of example is applied, three phase mains connects with multiple magnetic starters 106 respectively after feeding switch breaker CJ
Connect, the uncovering power-off warning circuit of the present embodiment specifically includes auxiliary reclay J1, transformer T1, rectifier circuit 101, filtering
Circuit 102, mu balanced circuit 103, electrochemical capacitor C15, C16, C17, C18, C19, oscillating circuit 104, the and of signal amplification circuit 105
Warning circuit 107；Any two-phase is connected, transformer T1 after disconnecting switch HK with transformer T1 primary side in three phase mains
Secondary side be connected with the ac input end of the rectifier circuit 101, the DC output end of the rectifier circuit 101 is through filter
Input after wave circuit 102 with mu balanced circuit 103 is connected, output end and the oscillating circuit 104 and letter of the mu balanced circuit 103
The power input connection of number amplifying circuit 105；Oscillating circuit 104 includes oscillator, the primary coil L1 of oscillator signal
Output end is connected with the signal input part of the signal amplification circuit 105, the signal output part string of the signal amplification circuit 105
It is grounded after connecing auxiliary reclay J1 coil, auxiliary reclay J1 normally opened contact J1-2 and normally closed electric shock J1-3 are arranged on feed
In switch control circuit, auxiliary reclay J1 normally-closed contact J1-1 is arranged in series the warning circuit institute in the loop, vibration
Device secondary coil is arranged between feeding switch breaker CJ and multiple magnetic starters, the switch of the multiple magnetic starter
The normally-closed contact of the travel switch of epicoele is connected between any two-phase of three phase mains after being connected respectively with an electrochemical capacitor.
Specifically, in feeding switch control loop, auxiliary reclay J1 normally opened contact J1-2 connects with feeding switch closing relay
Both ends of power is connected to, auxiliary reclay J1 normally-closed contact J1-3 is in parallel with feeding switch opening button SB1；When middle relay
During device J1 dead electricity, normally opened contact J1-2 disconnects, the closing relay dead electricity of feeding switch so that feeding switch breaker CJ breaks
Open, normally closed electric shock J1-3 closures, the opening button SB1 equivalent to feeding switch is closed so that feeding switch can not close power transmission.
Further, as shown in figure 1, multiple magnetic starters include signaling switch, belt shipper, tensioner stopping switch, fortune
Defeated winch switch and pump switch, state the normally-closed contact K1 and the first electrochemical capacitor C15 of the travel switch of signaling switch epicoele
It is connected to after series connection between any two-phase of three phase mains；The normally-closed contact K2 of the travel switch of the belt shipper epicoele and
It is connected to after two electrochemical capacitor C16 series connection between any two-phase of three phase mains；The travel switch of the tensioner stopping switch epicoele
Normally-closed contact K3 connected with the 3rd electrochemical capacitor C17 after be connected between any two-phase of three phase mains；The haulage gear
The normally-closed contact K4 of the travel switch of switch epicoele is connected to any two-phase of three phase mains after being connected with the 4th electrochemical capacitor C18
Between；The normally-closed contact K5 of the travel switch of the pump switch epicoele is connected to three-phase after being connected with the 5th electrochemical capacitor C19
Between any two-phase of power supply.
Further, described electrochemical capacitor C15, C16, C17, C18, C19 are high frequency capacitance, and its parameter is 2 μ F, 1kV.
Further, the filter circuit include be connected in parallel on the rectifier circuit 101 DC output end both positive and negative polarity it
Between electrochemical capacitor C1 and electric capacity C6, the mu balanced circuit includes model W7815 integrated regulator and is connected in parallel on
The electrochemical capacitor C7 at the integrated regulator output positive and negative charge both ends, in the oscillating circuit 104, mu balanced circuit 103 exports electricity
After cathode series resistance R1, the electric capacity C8 and oscillator primary coil L1 of pressure, connect with the negative pole of the output voltage of mu balanced circuit 103
Connect, the negative pole ground connection of the output voltage of mu balanced circuit 103；Triode BG1 colelctor electrode connects with the positive pole of the output voltage of equalizing network 103
Connect, triode BG1 base stage is connected with diode D3 negative pole, diode D3 plus earth, triode BG1 emitter stage string
It is connected after connecting resistance R2, and slide rheostat W2 with oscillator primary coil L1 O points, oscillator primary coil L1 O points
Connected through the signal input part of electric capacity C9 and signal amplification circuit, in addition, electric capacity C10 is connected in parallel on the two of oscillator primary coil L1
End；After oscillator secondary coil L2 both ends difference series resistor R14 and electric capacity C12, and series resistor R15 and electric capacity C13
It is connected with any two in three-phase, another phase in oscillator secondary coil L2 O ' point connection three-phases.
Further, the signal amplification circuit includes the first operational amplifier V1, the second operational amplifier V2 and the 3rd
It is negative with stabilized circuit outputting voltage after operational amplifier V3, the cathode series resistance R3 and resistance R4 of stabilized circuit outputting voltage
Pole connects, and resistance R4 both ends simultaneously meet electrochemical capacitor C2, and the first operational amplifier V1 first input end is connected to resistance R3 and electricity
Between hindering R4, the first operational amplifier V1 the second input is connected through electric capacity C9 with primary coil L1 O points, and the first computing is put
Big device V1 the second input is also grounded by resistance R5, and the first operational amplifier V1 output end is transported after resistance R9 with second
Calculate the second input connection of amplifier, after the first operational amplifier V1 output end series resistor R6 with the mu balanced circuit
The positive pole of output voltage connects, the output after the first operational amplifier V1 output end serial capacitance C14 with the mu balanced circuit
The negative pole connection of voltage；
Negative pole after the cathode series resistance R7 and resistance R8 of stabilized circuit outputting voltage with stabilized circuit outputting voltage connects
Connecing, the second operational amplifier V2 first input end is connected between resistance R7 and resistance R8, and the of the second operational amplifier V2
Two inputs are connected through resistance R9 with the output end of the first operational amplifier, and the second operational amplifier V2 the second input is also gone here and there
It is connected after meeting electrochemical capacitor C3 with the negative pole of stabilized circuit outputting voltage, the second operational amplifier V2 output end and diode D6
Positive pole connection, and the first input end with the 3rd operational amplifier V3 after diode D6 is connected；Second operational amplifier
Positive pole of the V2 output end also with diode D5 is connected, and the second input after diode D5 with the second operational amplifier V2
Connection；
Negative pole after the cathode series resistance R10 and resistance R11 of stabilized circuit outputting voltage with stabilized circuit outputting voltage
Connection, the output end of the 3rd operational amplifier V3 first input end with the second operational amplifier V2 after diode D6 are connected,
It is connected after diode D6 negative pole series resistor R12 with the positive pole of the output voltage of the mu balanced circuit 103, diode D6's is negative
It is connected after the series resistor R13 of pole with the negative pole of the output voltage of mu balanced circuit, the 3rd operational amplifier V3 the second input connects
It is connected between resistance R10 and resistance R11, resistance R11 both ends simultaneously meet electrochemical capacitor C4；3rd operational amplifier V3 output end string
It is connected after connecing the first auxiliary reclay J1 coil with the negative pole of stabilized circuit outputting voltage；3rd operational amplifier V3 output
It is connected to ground after holding electrochemical capacitor C5 and diode D4 also through being connected in parallel.
Further, the first operational amplifier V1 be model LM339 integration module, the second operational amplifier V2 and
3rd operational amplifier V3 can be model LM224 integration module, and the warning circuit includes buzzer.
Wherein, transformer T1 is used to 660V alternating voltages being changed into 20V alternating voltages, and the parameter of each element can in circuit
Think：Resistance R1, resistance R3, resistance R6, resistance R7, resistance R10, resistance R12, resistance R13 can be the gold that resistance is 1k Ω
Belong to resistance, resistance R2, resistance R4 are the metallic resistance that resistance is 560 Ω, and resistance R5 is the metallic resistance that resistance is 5.6k Ω, electricity
Resistance R8, resistance R11 are the metallic resistance that resistance is 1.5k Ω, and resistance R14, resistance R15 are the metallic resistance that resistance is 150 Ω,
Resistance 16 is the metallic resistance that resistance is 27 Ω, and electrochemical capacitor C1, electrochemical capacitor C7 parameter are 4.7 μ F, 50V, electrochemical capacitor
C2, electrochemical capacitor C3, electrochemical capacitor C4, electrochemical capacitor C51 parameter for 4.7 μ F, 25V, electric capacity C6, electric capacity C8, electric capacity C9 and
Electric capacity C10 is electric capacity of the dacron, and its parameter is that 0.22 μ F, 63V, electric capacity C12, electric capacity C13 are electric capacity of the dacron, and its parameter is 0.22 μ
F, 1600V, electric capacity C14 are metal capacitance, and its parameter is 0.22 μ F, 100V.
The operation principle of the underground coal mine uncovering power-off warning circuit of the present embodiment is as follows：Start in the magnetic force of each switch
In the case of the switch upper chamber cover closure of device, the normally-closed contact of travel switch disconnects, then after feeding switch breaker CJ closures, shakes
Swing circuit 104 to start working, auxiliary reclay J1 is powered, and its normally opened contact J1-2 closures, normally closed electric shock J1-3 disconnects, for feed
Switch startup is ready, feeding switch can normal power transmission, normally-closed contact J1-1 disconnects, and warning circuit 107 do not work；When appoint
The switch upper chamber cover of the magnetic starter of one switch of meaning is once open, and the normally-closed contact of travel switch recovers closure state, then
Access circuit with high-frequency electrolysis electric capacity connect of the trip switch normally-closed contact, oscillating circuit 104 is stopped, then centre after
Electrical equipment J1 is powered off, and its normally opened contact J1-2 disconnects, and normally-closed contact J1-3 closures, feeding switch closing relay is disconnected, normally closed
Contact J1-3 closure equivalent to opening button SB1 close, separating brake relay obtain it is electric, feeding switch breaker CJ disconnect and can not give
Electricity；Normally-closed contact J1-1 is closed, and warning circuit 107 connects work, reminds someone to be opened in the case of non-latching feeding switch
The switch upper chamber cover of certain magnetic starter；When according to operational procedure, when first disconnecting feeding switch breaker CJ, oscillating circuit
104 normal works, auxiliary reclay J1 are powered, and normally opened contact J1-2 disconnects, and warning circuit does not work, and further disconnect isolation
After switching HK and tightening locking thick stick, oscillating circuit dead electricity is stopped, and feeding switch locking, warning circuit does not work, and can ensure that
Starter maintenance safety.
Further, the company as shown in figure 1, the normally-closed contact J1-1 of the auxiliary reclay J1 connects with the warning circuit
After connecing, it is arranged between the disconnecting switch HK and transformer T1 so that disconnecting switch HK can control the work of warning circuit
State so that warning circuit will not arbitrarily alarm.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (7)
1. a kind of underground coal mine starter uncovering power-off warning circuit, three phase mains after feeding switch breaker CJ, respectively with
The connection of multiple magnetic starters, it is characterised in that including auxiliary reclay J1, transformer T1, rectifier circuit, filter circuit,
Mu balanced circuit, multiple electrochemical capacitors, oscillating circuit, signal amplification circuit and alarm are electric correspondingly with the magnetic starter
Road；
Primary side of any two-phase of three phase mains with transformer T1 after disconnecting switch HK is connected, transformer T1 secondary side with
The ac input end of the rectifier circuit connects, electric with voltage stabilizing after the filtered circuit of DC output end of the rectifier circuit
The input connection on road, the output end of the mu balanced circuit are connected with the power input of oscillating circuit and signal amplification circuit；
The oscillating circuit includes oscillator, and the signal of oscillator primary coil L1 signal output part and the signal amplification circuit is defeated
Enter end connection, be grounded after the signal output part concatenation auxiliary reclay J1 of signal amplification circuit coil；Feeding switch control
In loop processed, auxiliary reclay J1 normally opened contact J1-2 series connection is connected in series in power supply two with feeding switch closing relay
End, auxiliary reclay J1 normally-closed contact J1-3 is in parallel with feeding switch opening button, auxiliary reclay J1 normally-closed contact J1-
1 is arranged in series the warning circuit institute in the loop；
Oscillator secondary coil L2 is arranged between feeding switch breaker CJ and the multiple magnetic starter, the multiple magnetic
The normally-closed contact of the travel switch of the switch epicoele of power starter is connected to appointing for three phase mains after being connected respectively with electrochemical capacitor
Between two-phase of anticipating.
2. a kind of underground coal mine starter uncovering power-off warning circuit according to claim 1, it is characterised in that described more
Individual magnetic starter includes signaling switch, belt shipper, tensioner stopping switch, haulage gear switch and pump switch, described more
Individual electrochemical capacitor includes the first electrochemical capacitor, the second electrochemical capacitor, the 3rd electrochemical capacitor, the 4th electrochemical capacitor and the 5th electrolysis electricity
Hold；
The normally-closed contact of the travel switch of the signaling switch epicoele is connected to three phase mains after being connected with the first electrochemical capacitor
Between any two-phase；
The normally-closed contact of the travel switch of the belt shipper epicoele is connected to three phase mains after being connected with the second electrochemical capacitor
Between any two-phase；
The normally-closed contact of the travel switch of the tensioner stopping switch epicoele is connected to three phase mains after being connected with the 3rd electrochemical capacitor
Any two-phase between；
The normally-closed contact of the travel switch of the haulage gear switch epicoele is connected to three-phase electricity after being connected with the 4th electrochemical capacitor
Between any two-phase in source；
The normally-closed contact of the travel switch of the pump switch epicoele is connected to three phase mains after being connected with the 5th electrochemical capacitor
Between any two-phase.
A kind of 3. underground coal mine starter uncovering power-off warning circuit according to claim 1, it is characterised in that the electricity
Solve electric capacity is 2 μ F, 1kV for high frequency capacitance, its parameter.
A kind of 4. underground coal mine starter uncovering power-off warning circuit according to claim 1, it is characterised in that the filter
Wave circuit includes the electrochemical capacitor C1 and electric capacity C6 being connected in parallel between the DC output end both positive and negative polarity of the rectifier circuit 101,
The mu balanced circuit includes model W7815 integrated regulator and is connected in parallel on the integrated regulator output positive and negative charge
The electrochemical capacitor C7 at both ends, in the oscillating circuit 104, cathode series resistance R1, the electric capacity C8 of the output voltage of mu balanced circuit 103
And after oscillator primary coil L1, be connected with the negative pole of the output voltage of mu balanced circuit 103, the output voltage of mu balanced circuit 103
Negative pole is grounded；Triode BG1 colelctor electrode is connected with the positive pole of the output voltage of equalizing network 103, triode BG1 base stage and two poles
Pipe D3 negative pole connection, diode D3 plus earth, triode BG1 emitter stage series resistor R2, and slide rheostat
It is connected after W2 with oscillator primary coil L1 O points, oscillator primary coil L1 O points are through electric capacity C9 and signal amplification circuit
Signal input part connects, and electric capacity C10 is connected in parallel on oscillator primary coil L1 both ends, oscillator secondary coil L2 both ends difference
After series resistor R14 and electric capacity C12, and series resistor R15 and electric capacity C13, it is connected with major loop three-phase any two, shakes
Device secondary coil L2 O ' points are swung with another in three-phase to be connected.
A kind of 5. underground coal mine starter uncovering power-off warning circuit according to claim 4, it is characterised in that the letter
Number amplifying circuit includes the first operational amplifier V1, and the second operational amplifier V2 and the 3rd operational amplifier V3, mu balanced circuit are defeated
It is connected after going out the cathode series resistance R3 and resistance R4 of voltage with the negative pole of stabilized circuit outputting voltage, resistance R4 both ends simultaneously connect electricity
Electric capacity C2 is solved, the first operational amplifier V1 first input end is connected between resistance R3 and resistance R4, the first operational amplifier
V1 the second input is connected through electric capacity C9 with primary coil L1 O points, and the first operational amplifier V1 the second input is also logical
Resistance R5 ground connection is crossed, the first operational amplifier V1 output end connects after resistance R9 with the second input of the second operational amplifier
Connect, be connected after the first operational amplifier V1 output end series resistor R6 with the positive pole of the output voltage of the mu balanced circuit, the
It is connected after one operational amplifier V1 output end serial capacitance C14 with the negative pole of the output voltage of the mu balanced circuit；
It is connected after the cathode series resistance R7 and resistance R8 of stabilized circuit outputting voltage with the negative pole of stabilized circuit outputting voltage, the
Two operational amplifier V2 first input end is connected between resistance R7 and resistance R8, the second operational amplifier V2 the second input
End is connected through resistance R9 with the output end of the first operational amplifier, and the second operational amplifier V2 the second input also concatenates electrolysis
It is connected after electric capacity C3 with the negative pole of stabilized circuit outputting voltage, the second operational amplifier V2 output end and diode D6 positive pole
Connection, and the first input end with the 3rd operational amplifier V3 after diode D6 is connected；Second operational amplifier V2's is defeated
Go out positive pole of the end also with diode D5 to be connected, and the second input with the second operational amplifier V2 after diode D5 is connected；
It is connected after the cathode series resistance R10 and resistance R11 of stabilized circuit outputting voltage with the negative pole of stabilized circuit outputting voltage,
Output end of the 3rd operational amplifier V3 first input end with the second operational amplifier V2 after diode D6 is connected, diode
It is connected after D6 negative pole series resistor R12 with the positive pole of the output voltage of the mu balanced circuit 103, diode D6 negative pole concatenation
The negative pole of output voltage after resistance R13 with mu balanced circuit is connected, and the 3rd operational amplifier V3 the second input is connected to electricity
Between hindering R10 and resistance R11, resistance R11 both ends simultaneously meet electrochemical capacitor C4；3rd operational amplifier V3 output end concatenation first
It is connected after auxiliary reclay J1 coil with the negative pole of stabilized circuit outputting voltage；3rd operational amplifier V3 output end also passes through
It is connected to ground after the electrochemical capacitor C5 and diode D4 that are connected in parallel.
6. a kind of underground coal mine starter uncovering power-off warning circuit according to claim 5, it is characterised in that described
One operational amplifier V1 is model LM339 integration module, and the second operational amplifier V2 and the 3rd operational amplifier V3 are model
For LM224 integration module.
7. a kind of underground coal mine starter uncovering power-off warning circuit according to claim 1, it is characterised in that in described
Between relay J1 normally-closed contact J1-1 and the warning circuit be connected in series after, be arranged on the secondary side of the transformer T1 with
Between the rectifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720360998.5U CN206685878U (en) | 2017-04-07 | 2017-04-07 | Underground coal mine starter uncovering power-off warning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720360998.5U CN206685878U (en) | 2017-04-07 | 2017-04-07 | Underground coal mine starter uncovering power-off warning circuit |
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| Publication Number | Publication Date |
|---|---|
| CN206685878U true CN206685878U (en) | 2017-11-28 |
Family
ID=60399219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720360998.5U Expired - Fee Related CN206685878U (en) | 2017-04-07 | 2017-04-07 | Underground coal mine starter uncovering power-off warning circuit |
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| Country | Link |
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| CN (1) | CN206685878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975635A (en) * | 2019-03-19 | 2019-07-05 | 光力科技股份有限公司 | A kind of methane electric locking function test method and system |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975635A (en) * | 2019-03-19 | 2019-07-05 | 光力科技股份有限公司 | A kind of methane electric locking function test method and system |
| CN109975635B (en) * | 2019-03-19 | 2021-09-07 | 光力科技股份有限公司 | Methane electric locking function test method and system |
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Granted publication date: 20171128 Termination date: 20180407 |