CN209709746U - A kind of dual power supply switching circuit and device - Google Patents
A kind of dual power supply switching circuit and device Download PDFInfo
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- CN209709746U CN209709746U CN201920611451.7U CN201920611451U CN209709746U CN 209709746 U CN209709746 U CN 209709746U CN 201920611451 U CN201920611451 U CN 201920611451U CN 209709746 U CN209709746 U CN 209709746U
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Abstract
A kind of dual power supply switching circuit and device, the first power supply signal is provided by the first power module or second power supply module provides second source signal, the first power supply signal and second source signal are transmitted respectively by the first bus and the second bus, and control module only monitors to export first control signal when the first power supply signal, or it only monitors to export second control signal when second source signal, first controlled module is connected when receiving first control signal and transmits the first power supply signal to third bus, second controlled module is connected when receiving second control signal and transmits second source signal to third bus, third bus and load connect, the first power supply signal or second source signal are transmitted to load, to load supplying.Above-mentioned dual power supply switching circuit and device complete power supply switching by control module the first power supply signal of monitoring and second source signal in time, it is ensured that it is continuously load supplying, circuit structure is simple, and it is low in cost, it is easy to carry out inspection and maintenance.
Description
Technical field
The utility model belongs to distribution technique field more particularly to a kind of dual power supply switching circuit and device.
Background technique
Distribution system generally comprises common power supply and backup power source, and two power supplys can all be powered load.Currently, passing
The double-power supply switching device of system is to control motor-operating mechanism by intelligent controller finally to reach to control the movement of breaker
The purpose of power supply and backup power source is often used to connection or disjunction.However, the control logic of intelligent controller and motor-operating mechanism
Complexity, inspection, the difficulty of maintenance are big.
Therefore, there is the controls of intelligent controller and motor-operating mechanism for traditional double-power supply switching device technical solution
The problem that logic is complicated, inspection and maintenance difficulty is big.
Utility model content
In view of this, the utility model embodiment provides a kind of dual power supply switching circuit and device, it is intended to solve tradition
Double-power supply switching device technical solution there is intelligent controller and motor-operating mechanism control logic it is complicated, check and
The big problem of maintenance difficulty.
The first aspect of the utility model embodiment provides a kind of dual power supply switching circuit, comprising:
For providing the first power module of the first power supply signal；
For providing the second power supply module of second source signal；
It is connect with first power module, is used for transmission the first bus of first power supply signal；
It is connect with the second power supply module, is used for transmission the second bus of the second source signal；
It is connect with first bus, the first switch module of on-off is carried out for controlling first bus；
It is connect with second bus, the second switch module of on-off is carried out for controlling second bus；
It is connect with the first switch module and the second switch module, for only monitoring first power supply signal
When export first control signal, or while only monitoring the second source signal, exports the control module of second control signal；
For the conducting when receiving the first control signal, and transmit the first controlled mould of first power supply signal
Block；Wherein, first controlled module is equipped with the first end of incoming cables and the first leading-out terminal, first end of incoming cables and the control mould
Block connection；
For the conducting when receiving the second control signal, and transmit the second controlled mould of the second source signal
Block；Wherein, second controlled module is equipped with the second end of incoming cables and the second leading-out terminal, second end of incoming cables and the control mould
Block connection；And
It connect, is used for first power supply signal or described second with first leading-out terminal and second leading-out terminal
Power supply signal is transmitted to load, with the third bus to the load supplying.
The second aspect of the utility model embodiment provides a kind of double-power supply switching device, including the above-mentioned double electricity of one kind
Source switching circuit further includes the shell for the dual power supply switching circuit to be packaged.
A kind of above-mentioned dual power supply switching circuit and device provide the first power supply signal or the by the first power module
Two power modules provide second source signal, transmit the first power supply signal and the second electricity respectively by the first bus and the second bus
Source signal only monitors to export first control signal when the first power supply signal by control module, or only monitors the second electricity
Second control signal is exported when source signal, is connected when receiving first control signal by the first controlled module and transmits the first electricity
Source signal is connected when receiving second control signal to third bus or the second controlled module and transmits second source signal extremely
Third bus, third bus and load connect, and transmit the first power supply signal or second source signal to loading, to load supplying,
When one in the first power module or second power supply module can not power, the power module that can be powered is switched in time,
To ensure to be continuously load supplying.A kind of dual power supply switching circuit and device provided by the embodiment of the utility model, circuit structure
Simply, low in cost, it is easy to carry out inspection and maintenance, solving traditional double-power supply switching device technical solution, there is intelligence
The problem that the control logic of controller and motor-operating mechanism is complicated, inspection and maintenance difficulty is big.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of modular structure schematic diagram for dual power supply switching circuit that an embodiment of the present invention provides；
Fig. 2 be dual power supply switching circuit shown in FIG. 1 in first switch module, second switch module, the first controlled module,
The exemplary circuit figure of second controlled module, the first display module and the second display module；
Fig. 3 is the exemplary circuit figure of control module in dual power supply switching circuit shown in FIG. 1.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Referring to Fig. 1, a kind of modular structure signal of the dual power supply switching circuit provided for an embodiment of the present invention
Figure, for ease of description, only the parts related to this embodiment are shown, and details are as follows:
Present embodiments provide a kind of dual power supply switching circuit, including the first power module 11, second power supply module 21,
One bus 01, the second bus 02, third bus 03, first switch module 12, second switch module 22, the first controlled module 13,
Second controlled module 23 and control module 30.
Wherein, the direction that first switch module 12 and the first controlled module 13 are transmitted according to the first power supply signal is equipped with inlet wire
End and leading-out terminal export the first power supply signal to the end of incoming cables of first switch module 12, through first from the first power module 11
The leading-out terminal of switch module 12 is exported to the first end of incoming cables of the first controlled module 13, then is gone out by the first of the first controlled module 13
Line end is exported to third bus 03.
Second switch module 22 and the second controlled module 23 according to the direction that second source signal transmits be equipped with end of incoming cables and
Leading-out terminal exports second source signal to the end of incoming cables of second switch module 22, through second switch from second power supply module 21
The leading-out terminal of module 22 is exported to the second end of incoming cables of the second controlled module 23, then by the second leading-out terminal of the second controlled module 23
It exports to third bus 03.
For circuit in the case where normal work, first switch module 12 and second switch module 22 are in "on" position.
First power module 11 is for providing the first power supply signal, and second power supply module 21 is for providing second source letter
Number.Specifically, the first power supply signal and second source signal are Three-phase alternating current signal.Optionally, the first power module 11
The transformer for being all made of connection alternating current with second power supply module 21 is realized.
First bus 01 is connect with the first power module 11, is used for transmission the first power supply signal.Second bus 02 and second
Power module 21 connects, and is used for transmission second source signal.Specifically, the first bus 01 include firewire (U1, V1 and W1) and
Zero curve (N1), first switch module 12 connect on the firewire of the first bus 01.Second bus 02 includes firewire (U2, V2 and W2)
With zero curve (N2), second switch module 22 is connect on the firewire of the second bus 02.
First switch module 12 is connect with the first bus 01, carries out on-off for controlling the first bus 01.Specifically, when
When one switch module 12 is in "on" position, the conducting of the first bus 01, the first power supply signal that the first power module 11 is exported
First switch module 12 after closing a floodgate is transmitted to control module 30；When first switch module 12 is in gate-dividing state, first
Bus 01 disconnects, even if the first power module 11 has electricity at this time, can not also export the first power supply signal to control module 30 and the
One controlled module 13.
Second switch module 22 is connect with the second bus 02, carries out on-off for controlling the second bus 02.Specifically, when
When two switch modules 22 close a floodgate, the conducting of the second bus 02, the second source signal that second power supply module 21 is exported is after closing a floodgate
Second switch module 22 be transmitted to control module 30；When second switch module 22 is in gate-dividing state, the second bus 02 is disconnected
It opens, even if second power supply module 21 has electricity at this time, can not also export second source signal to control module 30 and the second controlled mould
Block 23.
Control module 30 is connect with first switch module 12 and second switch module 22, for ought only monitor the first electricity
First control signal is exported when source signal, or only monitors to export second control signal when second source signal.
Specifically, control module 30 is connected to the leading-out terminal of first switch module 12 and the end of incoming cables of the second controlled module 23
Between.When first switch module 12 is in "on" position and the first power module 11 provides the first power supply signal, the first electricity
Source signal is input to control module 30 through tie point U11, and control module 30 accordingly exports first control signal to the first controlled mould
Block 13 is connected when first controlled module 13 receives first control signal and the first power supply signal is transmitted to third bus 03；
When second switch module 22 is in "on" position and second power supply module 21 provides second source signal, second source signal
Control module 30 is input to through tie point U21, accordingly output second control signal is to the second controlled module 23 for control module 30, and the
It is connected when two controlled modules 23 receive second control signal and second source signal is transmitted to third bus 03.
Second leading-out terminal of the first leading-out terminal and the second controlled module 23 of third bus 03 and the first controlled module 13 connects
It connects, for the first power supply signal or second source signal to be transmitted to load 40, to power to load 40.
A kind of dual power supply switching circuit provided by the embodiment of the utility model provides the first electricity by the first power module 11
Source signal or second power supply module 21 provide second source signal, transmit the respectively by the first bus 01 and the second bus 02
One power supply signal and second source signal only monitor that the first control of output is believed when the first power supply signal by control module 30
Number, or only monitor to export second control signal when second source signal, the first control is received by the first controlled module 13
It is connected when signal processed and transmits the first power supply signal to third bus 03 or the second controlled module 23 and receive the second control letter
Number when be connected and transmit second source signal to third bus 03, third bus 03 connect with load 40, and the first power supply of transmission is believed
Number or second source signal to load 40, to load 40 power, when in the first power module 11 or second power supply module 21
One when can not power, switches to the power module that can be powered in time, to ensure to be continuously 40 power supply of load, circuit structure letter
It is single, it is low in cost, it is easy to carry out inspection and maintenance, solving traditional double-power supply switching device technical solution, there is intelligent controls
The problem that the control logic of device and motor-operating mechanism processed is complicated, inspection and maintenance difficulty is big.
Referring to Fig. 2, for first switch module 12 in dual power supply switching circuit shown in FIG. 1, second switch module 22, the
One controlled module 13, the second controlled module 23, the first display module 14 and the second display module 24 exemplary circuit figure, in order to
Convenient for explanation, only the parts related to this embodiment are shown, and details are as follows:
In an alternative embodiment, the first circuit breaker Q F1 is respectively adopted in first switch module 12 and second switch module 22
It is realized with the second circuit breaker Q F2.
Wherein, the first circuit breaker Q F1 is connected on the firewire of the first bus 01, is led to for controlling the first bus 01
Disconnected, the second circuit breaker Q F2 is connected on the firewire of the second bus 02, carries out on-off for controlling the second bus 02.When first disconnected
When road device QF1 closes a floodgate, the conducting of the first bus 01；When the second circuit breaker Q F2 closes a floodgate, the conducting of the second bus 02.First breaker
QF1 and the second circuit breaker Q F2 carries out overload protection and short-circuit protection to the first bus 01 and the second bus 02 respectively.
For circuit in the case where normal work, the first circuit breaker Q F1 and the second circuit breaker Q F2 are in "on" position.
In an alternative embodiment, first contactor KM1 is respectively adopted in the first controlled module 13 and the second controlled module 23
Main contacts KM10 and second contactor KM2 main contacts KM20 realize.Specifically, the first coil of first contactor KM1 and
The second coil of second contactor KM2 is all set in control module 30.When the first power supply signal is transmitted to control module 30,
The first coil of first contactor KM1 obtains electric, the main contacts KM10 actuation of control first contactor KM1, the first power supply signal warp
The main contacts KM10 of first contactor KM1 is exported to third bus 03；When second source signal is transmitted to control module 30, the
The second coil of two contactor KM2 obtains electric, and the main contacts KM20 of control second contactor KM2 is attracted, and second source signal is through the
The main contacts KM20 of two contactor KM2 is exported to third bus 03.
In an alternative embodiment, above-mentioned dual power supply switching circuit further includes mechanical interlock mechanism.
Specifically, the main contacts of the main contacts KM10 and second contactor KM2 of mechanical interlock mechanism and first contactor KM1
KM20 connection, for preventing the main contacts KM20 of main contacts KM10 and second contactor KM2 of first contactor KM1 to be in conjunction
Lock state, i.e. mechanical locking structure only allow main contacts KM10 combined floodgate or the main touching of second contactor KM2 of first contactor KM1
Point KM20 closes a floodgate.
In practical applications, the first power module 11 the first power supply signal of offer or second power supply module 21 is only allowed to mention
For second source signal, do not allow the first power module 11 and second power supply module 21 while powering, therefore uses mechanical interlocking
Mechanism prevents the main contacts KM20 of the main contacts KM10 and second contactor KM2 of first contactor KM1 to be in "on" position, because
Even if this first power module 11 and second power supply module 21 have electricity and transmit electricity simultaneously because of abnormal conditions, it is only able to pass through
The main touching of "on" position is in main contacts KM20 the two of the main contacts KM10 and second contactor KM2 of first contactor KM1
Point exports power supply signal to third bus 03.
Optionally, mechanical interlock mechanism can be connect with the first circuit breaker Q F1 and the second circuit breaker Q F2, prevent the first open circuit
Device QF1 and the second circuit breaker Q F2 is in "on" position simultaneously.
In an alternative embodiment, above-mentioned dual power supply switching circuit further includes the first display module 14 and the second display mould
Block 24.
Wherein, the first display module 14 is connect with the first power module 11, for showing the power supply of the first power module 11
State, and disconnected when the first power supply signal is greater than the first preset value.Second display module 24 is connect with second power supply module 21,
It is disconnected for showing the power supply state of second power supply module 21, and when second source signal is greater than the second preset value.
Specifically, the first display module 14 includes third fuse FU1 and third indicator light HL1.Third fuse FU1's
First end connects the firewire of the first bus 01, and the second end of third fuse FU1 connects the first end of third indicator light HL1, the
The second end of three indicator light HL1 connects the zero curve N1 of the first bus 01.When the first power module 11 exports the first power supply signal,
Third indicator light HL1 is lighted；When the first power supply signal is greater than the first preset threshold, third fuse FU1 fusing.
Optionally, voltmeter or Multifunctional digital meter generation can be used in the third indicator light HL1 in the first display module 14
It replaces.
Second display module 24 includes the 4th fuse FU2 and the 4th indicator light HL2.The first end of 4th fuse FU2
The firewire of the second bus 02 is connected, the second end of the 4th fuse FU2 connects the first end of the 4th indicator light HL2, the 4th instruction
The second end of lamp HL2 connects the zero curve N2 of the second bus 02.When second power supply module 21 exports second source signal, the 4th refers to
Show that lamp HL2 is lighted；When second source signal is greater than the second preset threshold, the 4th fuse FU2 fusing.
Optionally, voltmeter or Multifunctional digital meter generation can be used in the 4th indicator light HL2 in the second display module 24
It replaces.
Referring to Fig. 3, for the exemplary circuit figure of control module 30 in dual power supply switching circuit shown in FIG. 1, for the ease of
Illustrate, only the parts related to this embodiment are shown, and details are as follows:
In an alternative embodiment, above-mentioned control module 30 includes switching switch, first fuse FU3, the second fusing
Device FU4, the first indicator light HL3, the second indicator light HL4, the first intermediate relay KA1, the second intermediate relay KA2；First connects
The first coil of tentaculum KM1, the first normally opened contact KM11 (KM11) and the first normally-closed contact KM12 (KM12)；Second contactor
The second coil of KM2 (KM2), the second normally opened contact KM21 (KM21) and the second normally-closed contact KM22 (KM22).
Wherein, switching switch includes the first contact 1, the second contact 2, third contact 3, the 4th contact 4, the 5th contact 5, the
Six contacts 6, the 7th contact 7 and the 8th contact 8；First intermediate relay KA1 includes tertiary coil, third normally opened contact
KA11, the 4th normally opened contact KA12, third normally-closed contact KA13；Second intermediate relay KA2 includes the 4th coil, the 5th normally opened
Contact KA21 and the 4th normally-closed contact KA22.
The first end of first fuse FU3 connects first switch module 12, first end, the third of the first normally opened contact KM11
First end, the first end of third normally opened contact KA11, the first contact 1 and the 5th contact 5 of coil connect first fuse FU3
Second end；The second end of first normally opened contact KM11 connects the first end of the first indicator light HL3, third normally opened contact KA11's
Second end connects the first end of the 4th coil；The second end of first indicator light HL3, the second end of tertiary coil and the 4th coil
Second end connects the zero curve N1 of the first bus 01.
6th contact 6 connects the first end of the 4th normally opened contact KA12, the second end connection the of the 4th normally opened contact KA12
The second end of the first end of five normally opened contact KA21, the second contact 2 and the 5th normally opened contact KA21 connect the second normally-closed contact
The first end of KM22, the first end of the second end connection first coil of the second normally-closed contact KM22, the second end of first coil connect
Meet the zero curve N1 of the first bus 01.
The first end of second fuse FU4 connects second switch module 22, first end, the third of the second normally opened contact KM21
The second end of contact 3 and the 7th contact 7 connection second fuse FU4；The second end connection second of second normally opened contact KM21 refers to
Show that the first end of lamp HL4, the second end of the second indicator light HL4 connect the zero curve N2 of the second bus 02.
8th contact 8 connects the first end of third normally-closed contact KA13, the second end connection the of third normally-closed contact KA13
The first end of four normally-closed contact KA22, the second end of the 4th normally-closed contact KA22 and the 4th contact 4 connect the first normally-closed contact
The first end of KM12, the second end of the first normally-closed contact KM12 connect the first end of the second coil, and the second end of the second coil connects
Meet the zero curve N2 of the second bus 02.
There are three types of control modes for the tool of control module 30, are sufficiently explained the concrete operating principle of control module 30 below
It states:
Switching switch includes first manual gear, the second manual gear and automatic catch；Wherein, the first contact 1 and the second contact 2
Between when being connected, kept off for first manual, be the second manual gear, the 5th contact 5 when being connected between third contact 3 and the 4th contact 4
It is automatic catch when being connected between the 6th contact 6, and being connected between the 7th contact 7 and the 8th contact 8.
Mode one: when the first power module 11 has electricity, the first power supply signal is lighted third by third fuse FU1 and is referred to
Show lamp HL1, switching switch SA is switched to first manual gear manually, so that be connected between the first contact 1 and the second contact 2, the
The first contact 1 and the second contact 2, the second normally-closed contact that one power supply signal passes sequentially through first fuse FU3, switches switch SA
KM22 makes the first coil of first contactor KM1 obtain electric actuation, and the main contacts KM10 of first contactor KM1 closes, the first power supply
Signal is exported through the main contacts KM10 of first contactor KM1 to third bus 03, the load 40 to being connected on third bus 03
Power supply.Meanwhile the first normally opened contact KM11 closure of first contactor KM1, the first normally-closed contact KM12 are disconnected, the first indicator light
HL3 obtain it is electric light, complete the first power module 11 handoff procedure.
It is not connected between the third contact 3 of switch SA and the 4th contact 4 due to switching at this time, even if at this time second
Power module 21 send a telegram here, second source signal also can not by the second coil of second contactor KM2, second contactor KM2's
Main contacts KM20 can not be attracted, and thus avoided the first power module 11 and 21 parallel connection of second power supply module and caused accident.
Also, even if switching switch SA is abnormal and causes to be connected between the first contact 1 and the second contact 2 and the at this time
It is connected between three contacts 3 and the 4th contact 4, also due to mechanical interlock mechanism is to the main contacts KM10 of first contactor KM1 and
The restriction effect of the main contacts KM20 of two contactor KM2, and keep that the main contacts KM10 of first contactor KM1 is attracted, second connects
The main contacts KM20 of tentaculum KM2 is disconnected, to avoid the first power supply signal and second source signal while export to third bus
03。
Mode two: when second power supply module 21 has electricity, second source signal lights the 4th finger by the 4th fuse FU2
Show lamp HL2.Switching switch SA is switched to the second manual gear manually, so that be connected between third contact 3 and the 4th contact 4, with
Realization, which manually selects, throws second power supply module 21, second source signal pass sequentially through second fuse FU4, switching switch SA the
First normally-closed contact KM12 of three contacts 3 and the 4th contact 4, first contactor KM1, so that the second line of second contactor KM2
Electric actuation is enclosed to obtain, the main contacts KM20 of second contactor KM2 closes, main contacts of the second source signal through second contactor KM2
KM20 is exported to third bus 03, is powered to the load 40 being connected on third bus 03.Meanwhile the normally opened touching of contactor KM2
Point KM21 closure, normally-closed contact KM22 are disconnected, and switching is completed the second indicator light HL4 and lighted, and complete cutting for second power supply module 21
Change process.
Due to not being connected between the first contact 1 and the second contact 2 of switching switch SA, even if the first power supply at this time
Module 11 is sent a telegram here, and the first power supply signal can not also pass through the first coil of first contactor KM1, the main touching of first contactor KM1
Point KM10 is disconnected, and prevents the first power module 11 and the initiation accident in parallel of second power supply module 21.
Also, even if switching switch SA is abnormal and causes to be connected between the first contact 1 and the second contact 2 and the at this time
It is connected between three contacts 3 and the 4th contact 4, also due to mechanical interlock mechanism is to the main contacts KM10 of first contactor KM1 and
The restriction effect of the main contacts KM20 of two contactor KM2, and keep that the main contacts KM20 of second contactor KM2 is attracted, first connects
The main contacts KM10 of tentaculum KM1 is disconnected, to avoid the first power supply signal and second source signal while export to third bus
03。
Mode three: being switched to automatic transmission for switching switch SA, so that the 5th contact 5 and the conducting of the 6th contact 6, the 7th contact
7 and the 8th are connected between contact 8, switch the first contact 1 of switch SA and separated, the third contact 3 and the 4th of the second contact 2
Contact 4 it is separated, throw the first power module 11 or second power supply module 21 to realize and automatically select.
When the first power module 11 preferentially has electricity, third indicator light HL1 is lighted, and the first power supply signal passes through the first fusing
Device FU3 makes the tertiary coil of the first intermediate relay KA1 obtain electric actuation, the third normally opened contact of the first intermediate relay KA1
KA11 and the 4th normally opened contact KA12 closure, third normally-closed contact KA13 are disconnected, third normally opened contact KA11 closure, so that second
The 4th coil of intermediate relay KA2 obtains electric actuation, and the 5th normally opened contact KA21 of the second intermediate relay KA2 is closed, and the 4th
Normally-closed contact KA22 is disconnected, the 5th contact 5 and that the first power supply signal passes sequentially through first fuse FU3, switches switch SA
5th normally opened contact of six contacts 6, the 4th normally opened contact KA12 of the first intermediate relay KA1, the second intermediate relay KA2
The second normally-closed contact KM22 of KA21, second contactor KM2, finally make the first coil of first contactor KM1 obtain electric actuation, the
The main contacts KM10 of one contactor KM1 closes, and the first power supply signal is exported through the main contacts KM10 of first contactor KM1 to third
Bus 03 powers to the load 40 being connected on third bus 03.Meanwhile the first normally opened contact KM11 of first contactor KM1
Closure, the first normally-closed contact KM12 are disconnected, and the first indicator light HL3 is lighted, and complete the handoff procedure of the first power module 11.
Since third normally-closed contact KA13, the 4th normally closed KA22 and the first normally closed KM12 are disconnected at this time, so even if
Second power supply module 21 is sent a telegram here, and second source signal can not also pass through the second coil of second contactor KM2, second contactor
The main contacts KM20 of KM2 is disconnected, and prevents the first power module 11 and the initiation accident in parallel of second power supply module 21.
When second power supply module 21 preferentially has electricity, the 4th indicator light HL2 is lighted, and second source signal passes sequentially through second
The third normally-closed contact of the 7th contact 7 and the 8th contact 8, the first intermediate relay KA1 of fuse FU4, switching switch SA
The first normally-closed contact KM12 of KA13, the 4th normally-closed contact KA22 of the second intermediate relay KA2, first contactor KM1 make
The second coil of two contactor KM2 obtains electric actuation, and the main contacts KM20 of second contactor KM2 closes, and second source signal is through
The main contacts KM20 of two contactor KM2 is exported to third bus 03, is powered to the load 40 being connected on third bus 03.Together
When, the second normally opened contact KM21 closure of second contactor KM2, the second normally-closed contact KM22 is disconnected, the second indicator light HL4 point
It is bright, complete the handoff procedure of second power supply module 21.
Since the second normally-closed contact KM22 is disconnected at this time, even if the first power module 11 is sent a telegram here, the first power supply signal
Also it can not be disconnected by the first coil of first contactor KM1, the main contacts KM10 of first contactor KM1, prevent the first power supply
Module 11 and the initiation accident in parallel of second power supply module 21.
Aforesaid way one and mode two-way, which are crossed, manually selects the first power module of switching 11 or second power supply module 21, mode
Three be to automatically select the power module for needing switching.In practical applications, general employing mode three is run.When field working conditions are discontented
When sufficient automatic running condition, pass-through mode one may be selected or mode is run.When load 40 needs to overhaul, to guarantee to overhaul people
Change-over switch SA need to be switched to first manual and keep off and make the first circuit breaker Q F1 separating brake by the personal safety of member, or will conversion
Switch SA be switched to it is second manual and make the second circuit breaker Q F2 separating brake so that the first coil of first contactor KM1 and second
The second coil of contactor KM2 can not obtain electric actuation always, and third bus 03 does not have voltage at this time, ensure that the people of service personnel
Body safety.Further, open position padlock can be installed on the first circuit breaker Q F1 or the second circuit breaker Q F2 respectively, avoid examining
Artificial false switching when repairing.
The second aspect of the utility model embodiment provides a kind of double-power supply switching device, cuts including above-mentioned dual power supply
Circuit is changed, further includes the shell for dual power supply switching circuit to be packaged.
In conclusion providing the first power supply signal or second power supply module offer second source by the first power module
Signal transmits the first power supply signal and second source signal by the first bus and the second bus, only by control module respectively
It monitors to export first control signal when the first power supply signal, or only monitors the second control of output letter when second source signal
Number, it is connected when receiving first control signal by the first controlled module and transmits the first power supply signal to third bus, or
Second controlled module is connected when receiving second control signal and transmits second source signal to third bus, third bus and negative
Connection is carried, transmits the first power supply signal or second source signal to loading, to load supplying, when the first power module or second
One in power module when can not power, switches to the power module that can be powered in time, should to ensure to be continuously load supplying
Circuit structure is simple, low in cost, is easy to carry out inspection and maintenance, solves traditional double-power supply switching device technical solution and deposits
In the problem that the control logic of intelligent controller and motor-operating mechanism is complicated, inspection and maintenance difficulty is big.
Various embodiments are described to various devices herein.Many specific details are elaborated to provide to such as saying
Described in bright book and the thorough understanding of the general construction, function, manufacture and use of embodiment that is shown in the accompanying drawings.However this
It is in field the skilled person will understand that, embodiment can be carried out in the case where not such specific detail.In other realities
In example, well known operation, component and element is described in detail, in order to avoid make embodiment indigestion in the description.Ability
It is in domain the skilled person will understand that, herein and shown in embodiment be non-limited example, and therefore it can be appreciated that, this
Specific structure and function details disclosed in text can be range that is representative and might not limiting embodiment.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device is divided into different functional unit or module, more than completing
The all or part of function of description.Each functional unit in embodiment, module can integrate in one processing unit, can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units, it is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.In addition, each function list
Member, the specific name of module are also only for convenience of distinguishing each other, the protection scope being not intended to limit this application.Above system
The specific work process of middle unit, module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the utility model.
In addition, each functional unit in each embodiment of the utility model can integrate in one processing unit,
It can be each unit to physically exist alone, can also be integrated in one unit with two or more units.It is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (10)
1. a kind of dual power supply switching circuit characterized by comprising
For providing the first power module of the first power supply signal；
For providing the second power supply module of second source signal；
It is connect with first power module, is used for transmission the first bus of first power supply signal；
It is connect with the second power supply module, is used for transmission the second bus of the second source signal；
It is connect with first bus, the first switch module of on-off is carried out for controlling first bus；
It is connect with second bus, the second switch module of on-off is carried out for controlling second bus；
It is connect with the first switch module and the second switch module, it is defeated when for only monitoring first power supply signal
First control signal out, or only monitor the control module that second control signal is exported when the second source signal；
For the conducting when receiving the first control signal, and transmit the first controlled module of first power supply signal；
Wherein, first controlled module is equipped with the first end of incoming cables and the first leading-out terminal, first end of incoming cables and the control module
Connection；
For the conducting when receiving the second control signal, and transmit the second controlled module of the second source signal；
Wherein, second controlled module is equipped with the second end of incoming cables and the second leading-out terminal, second end of incoming cables and the control module
Connection；And
It connect, is used for first power supply signal or the second source with first leading-out terminal and second leading-out terminal
Signal is transmitted to load, with the third bus to the load supplying.
2. dual power supply switching circuit as described in claim 1, which is characterized in that the control module includes:
Switch switch, first fuse, second fuse, the first indicator light, the second indicator light, the first intermediate relay, second
Intermediate relay；The first coil of first contactor, the first normally opened contact and the first normally-closed contact；The second of second contactor
Coil, the second normally opened contact and the second normally-closed contact；
Switching switch includes the first contact, the second contact, third contact, the 4th contact, the 5th contact, the 6th contact, the
Seven contacts and the 8th contact；First intermediate relay include tertiary coil, third normally opened contact, the 4th normally opened contact,
Third normally-closed contact；Second intermediate relay includes the 4th coil, the 5th normally opened contact and the 4th normally-closed contact；
The first end of the first fuse connects the first switch module, the first end of first normally opened contact, described
The first end of tertiary coil, the first end of the third normally opened contact, first contact and the 5th contact connect institute
State the second end of first fuse；The second end of first normally opened contact connects the first end of first indicator light, described
The second end of third normally opened contact connects the first end of the 4th coil；Second end, the third of first indicator light
The second end of coil and the second end of the 4th coil connect the zero curve of first bus；
6th contact connects the first end of the 4th normally opened contact, described in the second end connection of the 4th normally opened contact
The second end of the first end of 5th normally opened contact, second contact and the 5th normally opened contact connects the second normally closed touching
The first end of point, the second end of second normally-closed contact connect the first end of the first coil, and the of the first coil
Two ends connect the zero curve of first bus；
The first end of the second fuse connects the second switch module, the first end of second normally opened contact, described
Third contact and the 7th contact connect the second end of the second fuse；The second end of second normally opened contact connects
The first end of second indicator light, the second end of second indicator light connect the zero curve of second bus；
8th contact connects the first end of the third normally-closed contact, described in the second end connection of the third normally-closed contact
The second end of the first end of 4th normally-closed contact, the 4th normally-closed contact connects the described first normally closed touching with the 4th contact
The first end of point, the second end of first normally-closed contact connect the first end of second coil, and the of second coil
Two ends connect the zero curve of second bus.
3. dual power supply switching circuit as described in claim 1, which is characterized in that the first switch module is opened with described second
It closes module and the first breaker and the realization of the second breaker is respectively adopted.
4. dual power supply switching circuit as claimed in claim 2, which is characterized in that first controlled module with described second by
The main contacts of the first contactor is respectively adopted in control module and the main contacts of the second contactor is realized.
5. dual power supply switching circuit as claimed in claim 4, which is characterized in that further include:
It is connect with the main contacts of the main contacts of the first contactor and the second contactor, for preventing first contact
The main contacts of device and the main contacts of the second contactor are in the mechanical interlock mechanism of "on" position.
6. dual power supply switching circuit as described in claim 1, which is characterized in that further include:
It is connect with first power module, for showing the power supply state of first power module, and when first electricity
Source signal is greater than the first display module disconnected when the first preset value；
It is connect with the second power supply module, for showing the power supply state of the second power supply module, and when second electricity
Source signal is greater than the second display module disconnected when the second preset value.
7. dual power supply switching circuit as claimed in claim 6, which is characterized in that first display module includes:
Third fuse and third indicator light；
The first end of the third fuse connects the firewire of first bus, and the second end of the third fuse connects institute
The first end of third indicator light is stated, the second end of the third indicator light connects the zero curve of first bus.
8. dual power supply switching circuit as claimed in claim 6, which is characterized in that second display module includes:
4th fuse and the 4th indicator light；
The first end of 4th fuse connects the firewire of second bus, and the second end of the 4th fuse connects institute
The first end of the 4th indicator light is stated, the second end of the 4th indicator light connects the zero curve of second bus.
9. dual power supply switching circuit as described in claim 1, which is characterized in that first power supply signal and second electricity
Source signal is Three-phase alternating current signal.
10. a kind of double-power supply switching device, which is characterized in that switch including dual power supply as described in any one of claim 1 to 9
Circuit further includes the shell for the dual power supply switching circuit to be packaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920611451.7U CN209709746U (en) | 2019-04-29 | 2019-04-29 | A kind of dual power supply switching circuit and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920611451.7U CN209709746U (en) | 2019-04-29 | 2019-04-29 | A kind of dual power supply switching circuit and device |
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|---|---|
| CN209709746U true CN209709746U (en) | 2019-11-29 |
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| CN201920611451.7U Active CN209709746U (en) | 2019-04-29 | 2019-04-29 | A kind of dual power supply switching circuit and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI717999B (en) * | 2020-02-15 | 2021-02-01 | 群光電能科技股份有限公司 | Lighting system |
| CN114744668A (en) * | 2022-02-28 | 2022-07-12 | 浙江埃克森电梯有限公司 | Energy feedback device for elevator |
| CN115498755A (en) * | 2022-11-02 | 2022-12-20 | 重庆钢铁股份有限公司 | Monitoring and alarming method for dual-power automatic transfer switch |
-
2019
- 2019-04-29 CN CN201920611451.7U patent/CN209709746U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI717999B (en) * | 2020-02-15 | 2021-02-01 | 群光電能科技股份有限公司 | Lighting system |
| CN114744668A (en) * | 2022-02-28 | 2022-07-12 | 浙江埃克森电梯有限公司 | Energy feedback device for elevator |
| CN115498755A (en) * | 2022-11-02 | 2022-12-20 | 重庆钢铁股份有限公司 | Monitoring and alarming method for dual-power automatic transfer switch |
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