CN207801789U - A kind of mine flameproof and intrinsic safety type combination vacuum communication soft strater - Google Patents
A kind of mine flameproof and intrinsic safety type combination vacuum communication soft strater Download PDFInfo
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- CN207801789U CN207801789U CN201820322667.7U CN201820322667U CN207801789U CN 207801789 U CN207801789 U CN 207801789U CN 201820322667 U CN201820322667 U CN 201820322667U CN 207801789 U CN207801789 U CN 207801789U
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Abstract
A kind of mine flameproof and intrinsic safety type combination vacuum communication soft strater, belongs to motor start-up control field, solves the problems, such as that isolation features and drive motor quantity are very few when existing soft strater does not have load.Soft strater：Three-phase alternating-current supply is connected through reversing switch, the first thyristor component and the first soft start switch is isolated with the first motor, it is connected with the second motor through reversing switch, the second thyristor component and the second soft start switch is isolated, it is connected with the first motor through the first by-pass switch, is connected with the second motor through the second by-pass switch.It is both provided with vacuum contactor between the first thyristor component and the first soft start switch, the second thyristor component and the second soft start switch.Soft starting controller controls the angle of flow of two thyristor components.First relay control unit controls the opening and closing of the first soft start switch and the first by-pass switch, and the second relay control unit controls the opening and closing of the second soft start switch and the second by-pass switch.
Description
Technical field
The utility model is related to a kind of soft straters, belong to motor start-up control field.
Background technology
Soft strater is a kind of to integrate the new of the multi-protective functions such as motor soft-starting, soft stop and light-load energy saving
Clever motor control assembly.Soft strater uses three-phase anti-parallel thyristor as pressure regulator, and is connected on power supply and motor
Stator between.When starting motor using soft strater, the output voltage of thyristor gradually increases, and motor ramps up,
Until thyristor is connected entirely, electric motor operation realizes smooth startup, reduces starting current in the mechanical property of rated voltage,
It avoids starting overcurrent tripping.When electrical motors are to rated revolution, start-up course terminates, and soft strater employs bypass contactor certainly
The thyristor of task is completed in substitution, provides rated voltage for motor normal operation, to reduce the thermal losses of thyristor, extends
The service life of soft strater improves its working efficiency, and power grid can be made to avoid harmonic pollution.Soft strater also provides simultaneously
Soft stop function, for soft stop with soft start-up process on the contrary, voltage continuously decreases, revolution gradually decreases to zero, avoids free parking
Caused torque shock ends.
However, existing soft strater still has following two main problems：
One, the circuit of existing soft strater design on, thyristor component is directly connected on major loop, without device every
From, when soft start stop or stop moment generate back-emf cannot be effectively prevented, to thyristor component and other electricity
The impact of device is larger, often causes equipment breakdown.
Two, existing soft strater can only drive motor one to one.
Utility model content
The utility model is that isolation features and drive motor quantity are very few when the existing soft strater of solution does not have load
The problem of, it is proposed that a kind of mine flameproof and intrinsic safety type combination vacuum communication soft strater.
Mine flameproof and intrinsic safety type described in the utility model combination vacuum communication soft strater includes first soft opening
Dynamic circuit, the second soft start circuit, the first bypass, the second bypass, soft start controller, the first relay control unit, second after
Electric control unit, the first vacuum contactor XR1 and the second vacuum contactor XR2；
First soft start circuit includes the first thyristor component SCR1 and the first soft start switch, the second soft start circuit packet
The second thyristor component SCR2 and the second soft start switch are included, the first soft start circuit and the second soft start circuit share isolation and change
To switch GHK and three-phase alternating-current supply；
Three-phase alternating-current supply be isolated reversing switch GHK be connected, isolation reversing switch GHK simultaneously with the first thyristor component
SCR1 and the second thyristor component SCR2 is connected, and the first thyristor component SCR1 and the second thyristor component SCR2 difference first are soft
Starting switch is connected with the second soft start switch, and the first soft start switch and the second soft start switch are respectively with to be launched first
Motor and the second motor are connected；
First bypass and the second bypass respectively include the first by-pass switch and the second by-pass switch, the setting of the first by-pass switch
Between isolation reversing switch GHK and the first motor, the setting of the second by-pass switch is electronic in isolation reversing switch GHK and second
Between machine；
Soft start controller is used to control the angle of flow of the first thyristor component SCR1 and the second thyristor component SCR2；
First relay control unit is used to control the opening and closing of the first soft start switch and the first by-pass switch；
Second relay control unit is used to control the opening and closing of the second soft start switch and the second by-pass switch；
First vacuum contactor XR1 is arranged between the first thyristor component SCR1 and the first soft start switch；
Second vacuum contactor XR2 is arranged between the second thyristor component SCR2 and the second soft start switch.
As preferably, the first thyristor component SCR1 and the second thyristor component SCR2 are all made of every phase two-stage tandem
The thyristor component of the three-phase inverse parallel connection of connection.
As preferably, the soft strater further includes the first power transformer T1 and second source transformer T2；
Under the action of three-phase alternating-current supply, the first power transformer T1 for simultaneously be soft start controller and first after
Electric control unit is powered, and second source transformer T2 is used to power for the second relay control unit.
As preferably, the first power transformer T1 is powered by direct-current switch power supply for soft start controller.
As preferably, the three-phase output end of three-phase alternating-current supply respectively with the first inlet wire that reversing switch GHK is isolated
End, the second end of incoming cables are connected with third end of incoming cables；
The first leading-out terminal of reversing switch GHK while the first input end and second with the first thyristor component SCR1 is isolated
The first input end of thyristor component SCR2 is connected；
The second leading-out terminal of reversing switch GHK while the second input terminal and second with the first thyristor component SCR1 is isolated
The second input terminal of thyristor component SCR2 is connected；
The third leading-out terminal of reversing switch GHK while the third input terminal and second with the first thyristor component SCR1 is isolated
The third input terminal of thyristor component SCR2 is connected；
First relay control unit includes the first pilot circuit, the first intermediate relay control loop and the first ac contactor
Device control loop；
First pilot circuit includes coil XD1, the start button QA and diode D of first conductance relay, first conductance relay
Coil XD1, start button QA, diode D and the first power transformer T1 the first vice-side winding be sequentially connected in series and constitute electrical
Circuit；
First intermediate relay control loop includes the line of the coil ZJ11 of the first intermediate relay, the second intermediate relay
Enclose the normally opened contact XD of ZJ12, first conductance relay1With the first normal open switch K1, the first of the coil ZJ11 of the first intermediate relay
End simultaneously with the coil ZJ12 of the first end and the second intermediate relay of the second vice-side winding of the first power transformer T1 the
One end is connected, the normally opened contact XD of the second end of the coil ZJ11 of the first intermediate relay and first conductance relay1First end phase
Even, the second end of the coil ZJ12 of the second intermediate relay is connected with the first end of the first normal open switch K1, first conductance relay
Normally opened contact XD1Second end and the first normal open switch K1 second vice-side winding of the second end with the first power transformer T1
Second end be connected；
First A.C. contactor control loop includes the line of the coil KM11 of the first A.C. contactor, the second A.C. contactor
Enclose the normally-closed contact ZJ of KM12, the second intermediate relay121, the second intermediate relay normally opened contact ZJ122With first among after
The normally opened contact ZJ of electric appliance11, the both ends of the coil KM11 of the first A.C. contactor are touched with the normally closed of the second intermediate relay respectively
Point ZJ121First end and the first intermediate relay normally opened contact ZJ11First end be connected, the second intermediate relay it is normally closed
Contact ZJ121Second end first end and the second A.C. contactor with the third vice-side winding of the first power transformer T1 simultaneously
Coil KM12 first end be connected, the normally opened contact ZJ of the first intermediate relay11Second end simultaneously with the first power supply transformation
The second end of the third vice-side winding of device T1 and the normally opened contact ZJ of the second intermediate relay122First end be connected, among second
The normally opened contact ZJ of relay122Second end be connected with the second end of the coil KM12 of the second A.C. contactor；
Soft start controller is used to control the opening and closing of the first normal open switch K1；
The three-phase normally opened contact KM of first A.C. contactor11For the first soft start switch, three-phase normally opened contact KM11It is located at
Between first thyristor component SCR1 and the first motor；
The three-phase normally opened contact KM of second A.C. contactor12For the first by-pass switch, three-phase normally opened contact KM12Positioned at every
From between reversing switch GHK and the first motor；
Second relay control unit is identical as the circuit structure of the first relay control unit, by soft start controller control
Mode is identical；
For the second relay control unit, the three-phase normally opened contact KM of third A.C. contactor21For the second soft start switch,
Three-phase normally opened contact KM21Between the second thyristor component SCR2 and the second motor, the three-phase of the 4th A.C. contactor is normal
Open contact KM22For the second by-pass switch, three-phase normally opened contact KM22Between isolation reversing switch GHK and the second motor.
As preferably, three-phase normally opened contact KM11The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively with
The first output end of first thyristor component SCR1, second output terminal are connected with third output end；
Three-phase normally opened contact KM12The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively with reversing switch is isolated
The first end of incoming cables, the second end of incoming cables of GHK is connected with third end of incoming cables；
Three-phase normally opened contact KM11The first leading-out terminal, the second leading-out terminal and third leading-out terminal respectively with three-phase normally opened contact
KM12The first leading-out terminal, the second leading-out terminal is connected with third leading-out terminal；
Three-phase normally opened contact KM11With three-phase normally opened contact KM12Outgoing line side three common ends with the first motor phase
Even.
As preferably, three-phase normally opened contact KM21The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively with
The first output end of second thyristor component SCR2, second output terminal are connected with third output end；
Three-phase normally opened contact KM22The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively with reversing switch is isolated
The first end of incoming cables, the second end of incoming cables of GHK is connected with third end of incoming cables；
Three-phase normally opened contact KM21The first leading-out terminal, the second leading-out terminal and third leading-out terminal respectively with three-phase normally opened contact
KM22The first leading-out terminal, the second leading-out terminal is connected with third leading-out terminal；
Three-phase normally opened contact KM21With three-phase normally opened contact KM22Outgoing line side three common ends with the second motor phase
Even.
As preferably, first input end, the second input terminal, the third input terminal of the first vacuum contactor XR1 are distinguished
Simultaneously with the first output end of the first thyristor component SCR1 and the first end of incoming cables, the first thyristor of three-phase normally opened contact KM11
The second output terminal of component SCR1 and the third of the second end of incoming cables of three-phase normally opened contact KM11, the first thyristor component SCR1 are defeated
Outlet is connected with the third end of incoming cables of three-phase normally opened contact KM11；
The first input end of second vacuum contactor XR2, the second input terminal, third input terminal respectively simultaneously with the second brilliant lock
The first output end and three-phase normally opened contact KM of tube assembly SCR221The first end of incoming cables, the second thyristor component SCR2 second
Output end and three-phase normally opened contact KM21The second end of incoming cables, the second thyristor component SCR2 third output end and three-phase it is normally opened
Contact KM21Third end of incoming cables be connected.
As being preferably, in three-phase normally opened contact KM11With three-phase normally opened contact KM12Outgoing line side three common ends
The first current transformer~third current transformer is provided between the first motor；
In three-phase normally opened contact KM21With three-phase normally opened contact KM22Outgoing line side three common ends and the second motor it
Between be provided with the current transformer of the 4th current transformer~the 6th；
The current transformer of first current transformer~the 6th is connected with soft start controller.
Mine flameproof and intrinsic safety type combination vacuum communication soft strater described in the utility model passes through setting first
Soft start circuit and the second soft start circuit, can drive two motors simultaneously, solve the driving electricity of existing soft strater
The very few problem of motivation quantity.The mine flameproof and intrinsic safety type combination vacuum communication soft strater is connect by the first vacuum
Tentaculum XR1 and the second vacuum contactor XR2 carries out arc extinguishing to the first soft start circuit and the second soft start circuit respectively, solves
When existing soft strater does not have load the problem of isolation features.
Description of the drawings
It will hereinafter come based on the embodiments and with reference to the accompanying drawings to mine flameproof and intrinsic safety described in the utility model
Type combination vacuum communication soft strater is described in more detail, wherein：
Fig. 1 is the circuit theory of the mine flameproof and intrinsic safety type combination vacuum communication soft strater described in embodiment
Figure；
Fig. 2 is the electrical connection schematic diagram of second source transformer and the second relay control unit that embodiment refers to；
Fig. 3 has the circuit directly initiated with the first relay control unit of soft start handoff functionality for what embodiment referred to
Schematic diagram.
Specific implementation mode
Below in conjunction with attached drawing, to mine flameproof and intrinsic safety type described in the utility model combination, vacuum communication is soft opens
Dynamic device is described further.
Embodiment：The present embodiment is explained in detail with reference to Fig. 1 to Fig. 3.
Referring to Figures 1 and 2, the mine flameproof and intrinsic safety type described in the present embodiment combines vacuum communication soft strater packet
The first soft start circuit, the second soft start circuit, the first bypass, the second bypass, soft start controller, first are included after electric control list
Member, the second relay control unit, the first vacuum contactor XR1 and the second vacuum contactor XR2；
First soft start circuit includes the first thyristor component SCR1 and the first soft start switch, the second soft start circuit packet
The second thyristor component SCR2 and the second soft start switch are included, the first soft start circuit and the second soft start circuit share isolation and change
To switch GHK and three-phase alternating-current supply；
Three-phase alternating-current supply be isolated reversing switch GHK be connected, isolation reversing switch GHK simultaneously with the first thyristor component
SCR1 and the second thyristor component SCR2 is connected, and the first thyristor component SCR1 and the second thyristor component SCR2 difference first are soft
Starting switch is connected with the second soft start switch, and the first soft start switch and the second soft start switch are respectively with to be launched first
Motor and the second motor are connected；
First bypass and the second bypass respectively include the first by-pass switch and the second by-pass switch, the setting of the first by-pass switch
Between isolation reversing switch GHK and the first motor, the setting of the second by-pass switch is electronic in isolation reversing switch GHK and second
Between machine；
Soft start controller is used to control the angle of flow of the first thyristor component SCR1 and the second thyristor component SCR2；
First relay control unit is used to control the opening and closing of the first soft start switch and the first by-pass switch；
Second relay control unit is used to control the opening and closing of the second soft start switch and the second by-pass switch；
First vacuum contactor XR1 is arranged between the first thyristor component SCR1 and the first soft start switch；
Second vacuum contactor XR2 is arranged between the second thyristor component SCR2 and the second soft start switch.
The first thyristor component SCR1 of the present embodiment and the second thyristor component SCR2 is all made of every phase two-stage tandem and connects
The thyristor component of the three-phase inverse parallel connection connect.
Mine flameproof and intrinsic safety type combination vacuum communication soft strater described in the present embodiment further includes the first power supply
Transformation
Device T1 and second source transformer T2；
Under the action of three-phase alternating-current supply, the first power transformer T1 for simultaneously be soft start controller and first after
Electric control unit is powered, and second source transformer T2 is used to power for the second relay control unit.
The first power transformer T1 of the present embodiment is powered by direct-current switch power supply for soft start controller.
In the present embodiment, the three-phase output end of three-phase alternating-current supply respectively with the first inlet wire that reversing switch GHK is isolated
End, the second end of incoming cables are connected with third end of incoming cables；
The first leading-out terminal of reversing switch GHK while the first input end and second with the first thyristor component SCR1 is isolated
The first input end of thyristor component SCR2 is connected；
The second leading-out terminal of reversing switch GHK while the second input terminal and second with the first thyristor component SCR1 is isolated
The second input terminal of thyristor component SCR2 is connected；
The third leading-out terminal of reversing switch GHK while the third input terminal and second with the first thyristor component SCR1 is isolated
The third input terminal of thyristor component SCR2 is connected；
First relay control unit includes the first pilot circuit, the first intermediate relay control loop and the first ac contactor
Device control loop；
First pilot circuit includes coil XD1, the start button QA and diode D of first conductance relay, first conductance relay
Coil XD1, start button QA, diode D and the first power transformer T1 the first vice-side winding be sequentially connected in series and constitute electrical
Circuit；
First intermediate relay control loop includes the line of the coil ZJ11 of the first intermediate relay, the second intermediate relay
Enclose the normally opened contact XD of ZJ12, first conductance relay1With the first normal open switch K1, the first of the coil ZJ11 of the first intermediate relay
End simultaneously with the coil ZJ12 of the first end and the second intermediate relay of the second vice-side winding of the first power transformer T1 the
One end is connected, the normally opened contact XD of the second end of the coil ZJ11 of the first intermediate relay and first conductance relay1First end phase
Even, the second end of the coil ZJ12 of the second intermediate relay is connected with the first end of the first normal open switch K1, first conductance relay
Normally opened contact XD1Second end and the first normal open switch K1 second vice-side winding of the second end with the first power transformer T1
Second end be connected；
First A.C. contactor control loop includes the line of the coil KM11 of the first A.C. contactor, the second A.C. contactor
Enclose the normally-closed contact ZJ of KM12, the second intermediate relay121, the second intermediate relay normally opened contact ZJ122With first among after
The normally opened contact ZJ of electric appliance11, the both ends of the coil KM11 of the first A.C. contactor are touched with the normally closed of the second intermediate relay respectively
Point ZJ121First end and the first intermediate relay normally opened contact ZJ11First end be connected, the second intermediate relay it is normally closed
Contact ZJ121Second end first end and the second A.C. contactor with the third vice-side winding of the first power transformer T1 simultaneously
Coil KM12 first end be connected, the normally opened contact ZJ of the first intermediate relay11Second end simultaneously with the first power supply transformation
The second end of the third vice-side winding of device T1 and the normally opened contact ZJ of the second intermediate relay122First end be connected, among second
The normally opened contact ZJ of relay122Second end be connected with the second end of the coil KM12 of the second A.C. contactor；
Soft start controller is used to control the opening and closing of the first normal open switch K1；
The three-phase normally opened contact KM of first A.C. contactor11For the first soft start switch, three-phase normally opened contact KM11It is located at
Between first thyristor component SCR1 and the first motor；
The three-phase normally opened contact KM of second A.C. contactor12For the first by-pass switch, three-phase normally opened contact KM12Positioned at every
From between reversing switch GHK and the first motor；
Second relay control unit is identical as the circuit structure of the first relay control unit, by soft start controller control
Mode is identical；
For the second relay control unit, the three-phase normally opened contact KM of third A.C. contactor21For the second soft start switch,
Three-phase normally opened contact KM21Between the second thyristor component SCR2 and the second motor；
The three-phase normally opened contact KM of 4th A.C. contactor22For the second by-pass switch, three-phase normally opened contact KM22Positioned at every
From between reversing switch GHK and the second motor.
The three-phase normally opened contact KM of the present embodiment11The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively with
The first output end of one thyristor component SCR1, second output terminal are connected with third output end；
Three-phase normally opened contact KM12The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively with reversing switch is isolated
The first end of incoming cables, the second end of incoming cables of GHK is connected with third end of incoming cables；
Three-phase normally opened contact KM11The first leading-out terminal, the second leading-out terminal and third leading-out terminal respectively with three-phase normally opened contact
KM12The first leading-out terminal, the second leading-out terminal is connected with third leading-out terminal；
Three-phase normally opened contact KM11With three-phase normally opened contact KM12Outgoing line side three common ends with the first motor phase
Even.
The three-phase normally opened contact KM of the present embodiment21The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively with
The first output end of two thyristor component SCR2, second output terminal are connected with third output end；
Three-phase normally opened contact KM22The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively with reversing switch is isolated
The first end of incoming cables, the second end of incoming cables of GHK is connected with third end of incoming cables；
Three-phase normally opened contact KM21The first leading-out terminal, the second leading-out terminal and third leading-out terminal respectively with three-phase normally opened contact
KM22The first leading-out terminal, the second leading-out terminal is connected with third leading-out terminal；
Three-phase normally opened contact KM21With three-phase normally opened contact KM22Outgoing line side three common ends with the second motor phase
Even.
First input end, the second input terminal, the third input terminal of the first vacuum contactor XR1 of the present embodiment is distinguished simultaneously
With the first output end of the first thyristor component SCR1 and the first end of incoming cables, the first thyristor component of three-phase normally opened contact KM11
The third output end of the second output terminal of SCR1 and the second end of incoming cables of three-phase normally opened contact KM11, the first thyristor component SCR1
It is connected with the third end of incoming cables of three-phase normally opened contact KM11；
The first input end of second vacuum contactor XR2, the second input terminal, third input terminal respectively simultaneously with the second brilliant lock
The first output end and three-phase normally opened contact KM of tube assembly SCR221The first end of incoming cables, the second thyristor component SCR2 second
Output end and three-phase normally opened contact KM21The second end of incoming cables, the second thyristor component SCR2 third output end and three-phase it is normally opened
Contact KM21Third end of incoming cables be connected.
In the present embodiment, in three-phase normally opened contact KM11With three-phase normally opened contact KM12Outgoing line side three common ends
The first current transformer~third current transformer is provided between the first motor；
In three-phase normally opened contact KM21With three-phase normally opened contact KM22Outgoing line side three common ends and the second motor it
Between be provided with the current transformer of the 4th current transformer~the 6th；
The current transformer of first current transformer~the 6th is connected with soft start controller.
The normally opened contact XD of the first conductance relay of the present embodiment1For control soft start controller starting-up later time it is logical
It is disconnected.
Described in the present embodiment mine flameproof and intrinsic safety type combination vacuum communication soft strater operation principle be：
Single loop soft start (by taking the first soft start circuit as an example)：It is required that soft-start time is 10s, initial voltage is
40%.Setting：Soft-start time setting is respectively enterd in the secondary sub-menu of soft start controller and initial voltage sets option
It is adjusted setting.Other parameters are adjusted by parameter request into corresponding option.Action process is as follows：Isolation is opened to change
To switch GHK, start button QA is pressed, the coil XD1 of first conductance relay obtains electric, the normally opened contact XD of first conductance relay1It is closed,
The coil ZJ11 of first intermediate relay obtains electric, the normally opened contact ZJ of the first intermediate relay11It is closed, the first A.C. contactor
Coil KM11 obtains electric, the three-phase normally opened contact KM of the first A.C. contactor11It is closed, the first soft start circuit is connected.
At the same time, the starting-up later time of soft start controller with first conductance relay normally opened contact XD1Closure and connect.
Soft start controller controls the angle of flow of the first thyristor component SCR1, and the first motor starts according to the curve smoothing of setting.
After soft start, soft start controller makes the first normal open switch K1 be closed, the coil ZJ12 of the second intermediate relay obtain it is electric, the
The normally-closed contact ZJ of two intermediate relays121It disconnects, the normally opened contact ZJ of the second intermediate relay122It is closed, the first ac contactor
The coil KM11 dead electricity of device, the three-phase normally opened contact KM of the first A.C. contactor11It disconnects, the first soft start circuit disconnects.With this
Meanwhile second the coil KM12 of A.C. contactor obtain electric, the three-phase normally opened contact KM of the second A.C. contactor12It is closed, completes other
Road starts.
Double loop soft start：It is required that after the first soft start loop start 2s, the second soft start loop start, soft start 5-6
After second, while entering total head and running.Setting：The mailing address in the first soft start circuit is set as 11, slave addresses are set as
01, the start-stop control selections in the first soft start circuit and the second soft start circuit select external control+communication；It opens in the first soft start circuit
Dynamic delay is 0 second, and the start-up study in the second soft start circuit is 2 seconds, and the soft-start time in the first soft start circuit is 6s, second
The soft-start time in soft start circuit is 4s, and other settings are identical as single loop soft start.Double loop soft start and single loop are soft
The course of work of startup is similar, the first soft start circuit elder generation soft start, soft start behind the second soft start circuit, when reaching setting
Between after, the first soft start circuit and the second soft start circuit simultaneously switch off, first bypass and second bypass and meanwhile start.
The present embodiment uses the soft start controller of RJB07MF models, the soft start controller to be arranged in door strap component
On, have the function of to divide heavy load starting, mainly adjusts frequency by the way of discrete frequency dividing, have current-limiting function concurrently, effectively
Ground improves torque, solve the problems, such as existing soft start focus on can not start it is larger with starting current.
The present embodiment uses the thyristor component of MTC600-40, the first thyristor component SCR1 and the second thyristor component
SCR2 is directly installed on the left wall plate in the shell of complete machine, that is, facilitates installation that space effectively is utilized, and improve heat dissipation
Efficiency, and extend the service life of thyristor component.
Mine flameproof and intrinsic safety type combination vacuum communication soft strater described in the present embodiment is suitable for underground coal mine
And its in the environment containing methane and the explosive gas of coal dust mixture in surrounding medium, using in exchange 50HZ, voltage
1140 or 660V in specified total current 500A, single loop maximum current 250A and circuit below, constitutes that two independences are soft to be opened
Dynamic circuit, also constitutes online double loop soft start, carries out soft start to three-phase AC asynchronous motor, soft stop controls.It opens
Flowing mode uses voltage time ramp system and starting current limitation function, and has frequency modulation soft start function concurrently.Starting current is small,
Start speed steadily to be promoted, and the detent torque of motor can be effectively improved.Solving conventional soft start heavy duty can not start
The larger problem with starting current.Reduce simultaneously because directly initiate or star/angle starts the excessive detent torque of generation to power grid
Impact, impact when reducing electric motor starting to machine driven system.The machine can also require according to field condition, be set as opening firmly
Dynamic state.This combination soft strater has the complete defencive functions such as overload, short circuit, disconnected phase, earth leakage search/lockout, is that dragging is mined
The ideal equipment such as machine, drag conveyor, belt feeder.
Fig. 3 is with the circuit diagram directly initiated with the first relay control unit of soft start handoff functionality.Make
It used time, can be directly initiated by toggle switch NK1 and toggle switch NK2 selections and soft-start mode.XJ in figure is test
Jack.
Although describing the utility model herein with reference to specific embodiment, it should be understood that, this
A little embodiments are only the principles of the present invention and the example of application.It should therefore be understood that can be to illustratively implementing
Example carries out many modifications, and can be designed that other arrangements, without departing from this practicality as defined in the appended claims
Novel spirit and scope.It should be understood that can be combined not by being different from mode described in original claim
Same dependent claims and feature described herein.It will also be appreciated that the feature in conjunction with described in separate embodiments
It can use in other embodiments.
Claims (9)
1. a kind of mine flameproof and intrinsic safety type combines vacuum communication soft strater, which is characterized in that the soft strater packet
The first soft start circuit, the second soft start circuit, the first bypass, the second bypass, soft starting controller, first are included after electric control list
Member, the second relay control unit, the first vacuum contactor XR1 and the second vacuum contactor XR2；
First soft start circuit includes the first thyristor component SCR1 and the first soft start switch, and the second soft start circuit includes the
Two thyristor component SCR2 and the second soft start switch, the first soft start circuit and the second soft start circuit share isolation commutation and open
Close GHK and three-phase alternating-current supply；
Three-phase alternating-current supply be isolated reversing switch GHK be connected, isolation reversing switch GHK simultaneously with the first thyristor component SCR1
It is connected with the second thyristor component SCR2, the first thyristor component SCR1 and the second thyristor component SCR2 distinguish the first soft start
Switch is connected with the second soft start switch, and the first soft start switch and the second soft start switch are electronic with to be launched first respectively
Machine and the second motor are connected；
First bypass and the second bypass respectively include the first by-pass switch and the second by-pass switch, the setting of the first by-pass switch every
From between reversing switch GHK and the first motor, the setting of the second by-pass switch isolation reversing switch GHK and the second motor it
Between；
Soft starting controller is used to control the angle of flow of the first thyristor component SCR1 and the second thyristor component SCR2；
First relay control unit is used to control the opening and closing of the first soft start switch and the first by-pass switch；
Second relay control unit is used to control the opening and closing of the second soft start switch and the second by-pass switch；
First vacuum contactor XR1 is arranged between the first thyristor component SCR1 and the first soft start switch；
Second vacuum contactor XR2 is arranged between the second thyristor component SCR2 and the second soft start switch.
2. mine flameproof and intrinsic safety type as described in claim 1 combines vacuum communication soft strater, which is characterized in that
First thyristor component SCR1 and the second thyristor component SCR2 is all made of the three-phase inverse parallel of every phase two-stage tandem connection
The thyristor component of connection.
3. mine flameproof and intrinsic safety type as claimed in claim 2 combines vacuum communication soft strater, which is characterized in that
The soft strater further includes the first power transformer T1 and second source transformer T2；
Under the action of three-phase alternating-current supply, the first power transformer T1 is for while for soft starting controller and first after automatically controlled
Unit power supply processed, second source transformer T2 are used to power for the second relay control unit.
4. mine flameproof and intrinsic safety type as claimed in claim 3 combines vacuum communication soft strater, which is characterized in that the
One power transformer T1 is powered by direct-current switch power supply for soft starting controller.
5. mine flameproof and intrinsic safety type as claimed in claim 4 combines vacuum communication soft strater, which is characterized in that
The three-phase output end of three-phase alternating-current supply respectively with the first end of incoming cables, the second end of incoming cables and that reversing switch GHK is isolated
Three ends of incoming cables are connected；
Be isolated the first leading-out terminal of reversing switch GHK simultaneously with the first input end of the first thyristor component SCR1 and the second brilliant lock
The first input end of tube assembly SCR2 is connected；
Be isolated the second leading-out terminal of reversing switch GHK simultaneously with the second input terminal of the first thyristor component SCR1 and the second brilliant lock
The second input terminal of tube assembly SCR2 is connected；
Be isolated the third leading-out terminal of reversing switch GHK simultaneously with the third input terminal of the first thyristor component SCR1 and the second brilliant lock
The third input terminal of tube assembly SCR2 is connected；
First relay control unit includes the first pilot circuit, the first intermediate relay control loop and the first A.C. contactor control
Circuit processed；
First pilot circuit includes coil XD1, the start button QA and diode D of first conductance relay, the coil of first conductance relay
XD1, start button QA, diode D and the first power transformer T1 the first vice-side winding be sequentially connected in series and constitute electric loop；
First intermediate relay control loop includes the coil of the coil ZJ11 of the first intermediate relay, the second intermediate relay
The normally opened contact XD of ZJ12, first conductance relay1With the first normal open switch K1, the first end of the coil ZJ11 of the first intermediate relay
First with the coil ZJ12 of the first end and the second intermediate relay of the second vice-side winding of the first power transformer T1 simultaneously
End is connected, the normally opened contact XD of the second end of the coil ZJ11 of the first intermediate relay and first conductance relay1First end be connected,
The second end of the coil ZJ12 of second intermediate relay is connected with the first end of the first normal open switch K1, first conductance relay it is normally opened
Contact XD1Second end and the first normal open switch K1 second end with the second vice-side winding of the first power transformer T1
Two ends are connected；
First A.C. contactor control loop includes the coil of the coil KM11 of the first A.C. contactor, the second A.C. contactor
The normally-closed contact ZJ of KM12, the second intermediate relay121, the second intermediate relay normally opened contact ZJ122With the first intermediate relay
The normally opened contact ZJ of device11, the both ends of the coil KM11 of the first A.C. contactor normally-closed contact with the second intermediate relay respectively
ZJ121First end and the first intermediate relay normally opened contact ZJ11First end be connected, the second intermediate relay it is normally closed touch
Point ZJ121Second end simultaneously with the first end of the third vice-side winding of the first power transformer T1 and the second A.C. contactor
The first end of coil KM12 is connected, the normally opened contact ZJ of the first intermediate relay11Second end simultaneously with the first power transformer
The second end of the third vice-side winding of T1 and the normally opened contact ZJ of the second intermediate relay122First end be connected, among second after
The normally opened contact ZJ of electric appliance122Second end be connected with the second end of the coil KM12 of the second A.C. contactor；
Soft starting controller is used to control the opening and closing of the first normal open switch K1；
The three-phase normally opened contact KM of first A.C. contactor11For the first soft start switch, three-phase normally opened contact KM11Positioned at the first crystalline substance
Between brake tube component SCR1 and the first motor；
The three-phase normally opened contact KM of second A.C. contactor12For the first by-pass switch, three-phase normally opened contact KM12It commutates positioned at isolation
Between switch GHK and the first motor；
Second relay control unit is identical as the circuit structure of the first relay control unit, the mode controlled by soft starting controller
It is identical；
For the second relay control unit, the three-phase normally opened contact KM of third A.C. contactor21For the second soft start switch, three-phase
Normally opened contact KM21Between the second thyristor component SCR2 and the second motor, the three-phase of the 4th A.C. contactor is normally opened to be touched
Point KM22For the second by-pass switch, three-phase normally opened contact KM22Between isolation reversing switch GHK and the second motor.
6. mine flameproof and intrinsic safety type as claimed in claim 5 combines vacuum communication soft strater, which is characterized in that
Three-phase normally opened contact KM11The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively with the first thyristor component
The first output end of SCR1, second output terminal are connected with third output end；
Three-phase normally opened contact KM12The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively be isolated reversing switch GHK's
First end of incoming cables, the second end of incoming cables are connected with third end of incoming cables；
Three-phase normally opened contact KM11The first leading-out terminal, the second leading-out terminal and third leading-out terminal respectively with three-phase normally opened contact KM12's
First leading-out terminal, the second leading-out terminal are connected with third leading-out terminal；
Three-phase normally opened contact KM11With three-phase normally opened contact KM12Three common ends of outgoing line side be connected with the first motor.
7. mine flameproof and intrinsic safety type as claimed in claim 6 combines vacuum communication soft strater, which is characterized in that
Three-phase normally opened contact KM21The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively with the second thyristor component
The first output end of SCR2, second output terminal are connected with third output end；
Three-phase normally opened contact KM22The first end of incoming cables, the second end of incoming cables and third end of incoming cables respectively be isolated reversing switch GHK's
First end of incoming cables, the second end of incoming cables are connected with third end of incoming cables；
Three-phase normally opened contact KM21The first leading-out terminal, the second leading-out terminal and third leading-out terminal respectively with three-phase normally opened contact KM22's
First leading-out terminal, the second leading-out terminal are connected with third leading-out terminal；
Three-phase normally opened contact KM21With three-phase normally opened contact KM22Three common ends of outgoing line side be connected with the second motor.
8. mine flameproof and intrinsic safety type as claimed in claim 7 combines vacuum communication soft strater, which is characterized in that
The first input end of first vacuum contactor XR1, the second input terminal, third input terminal respectively simultaneously with the first thyristor groups
Second output of the first output end of part SCR1 and the first end of incoming cables of three-phase normally opened contact KM11, the first thyristor component SCR1
The third output end and three-phase normally opened contact at end and the second end of incoming cables of three-phase normally opened contact KM11, the first thyristor component SCR1
The third end of incoming cables of KM11 is connected；
The first input end of second vacuum contactor XR2, the second input terminal, third input terminal respectively simultaneously with the second thyristor groups
The first output end and three-phase normally opened contact KM of part SCR221The first end of incoming cables, the second thyristor component SCR2 second output
End and three-phase normally opened contact KM21The second end of incoming cables, the second thyristor component SCR2 third output end and three-phase normally opened contact
KM21Third end of incoming cables be connected.
9. mine flameproof and intrinsic safety type as claimed in claim 8 combines vacuum communication soft strater, which is characterized in that
In three-phase normally opened contact KM11With three-phase normally opened contact KM12Outgoing line side three common ends and the first motor between set
It is equipped with the first current transformer~third current transformer；
In three-phase normally opened contact KM21With three-phase normally opened contact KM22Outgoing line side three common ends and the second motor between set
It is equipped with the current transformer of the 4th current transformer~the 6th；
The current transformer of first current transformer~the 6th is connected with soft starting controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820322667.7U CN207801789U (en) | 2018-03-08 | 2018-03-08 | A kind of mine flameproof and intrinsic safety type combination vacuum communication soft strater |
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| CN201820322667.7U CN207801789U (en) | 2018-03-08 | 2018-03-08 | A kind of mine flameproof and intrinsic safety type combination vacuum communication soft strater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111498427A (en) * | 2020-06-01 | 2020-08-07 | 淮南矿业(集团)有限责任公司 | Chain plate machine delayed start control circuit and control method |
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2018
- 2018-03-08 CN CN201820322667.7U patent/CN207801789U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111498427A (en) * | 2020-06-01 | 2020-08-07 | 淮南矿业(集团)有限责任公司 | Chain plate machine delayed start control circuit and control method |
| CN111498427B (en) * | 2020-06-01 | 2024-06-04 | 淮南矿业(集团)有限责任公司 | Chain scraper delay starting control circuit and control method |
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Effective date of registration: 20210525 Address after: 158100 Jixi city of Heilongjiang province and Jiguan District Road No. 54 Patentee after: JIXI GENGCHEN ELECTROMECHANICAL MFG Co.,Ltd. Address before: 158100 Jixi city of Heilongjiang province and Jiguan District Road No. 54 Patentee before: Niu Yuhuan |