CN209608325U - Safety protection circuit and electrical control cabinet - Google Patents
Safety protection circuit and electrical control cabinet Download PDFInfo
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- CN209608325U CN209608325U CN201920720008.3U CN201920720008U CN209608325U CN 209608325 U CN209608325 U CN 209608325U CN 201920720008 U CN201920720008 U CN 201920720008U CN 209608325 U CN209608325 U CN 209608325U
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- control
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Abstract
The utility model discloses a kind of safety protection circuit and electrical control cabinets.The utility model sends alarm signal when detecting danger signal to the first control module and the second control module by the alarm detection module in electrical control cabinet；Reset key sends reset signal to the first control module and the second control module after the single touch-control for receiving user；First control module is connect with the second control module, and first control signal is sent when receiving alarm signal to the second control module, second control signal is sent when receiving reset signal to the second control module；Second control module is connect with power module, for the disconnection when receiving alarm signal or first control signal, so that power module powers off；Reset signal and second control signal closure are being received, so that power module powers on, to control power supply simultaneously by the first control module and the second control module, duplicate protection is being carried out to the equipment in electrical control cabinet, improves safety.
Description
Technical field
The utility model relates to technical field of electric control more particularly to a kind of safety protection circuits and electrical control cabinet.
Background technique
Electrical control cabinet is to assemble switchgear, measuring instrumentss, protection electric appliance and ancillary equipment by electrical wiring requirement
Equipment in closing or semiclosed metal safe or in screen width, for controlling live electromechanical equipment.
In the prior art, electrical control cabinet is controlled usually using controller, electricity is connected when operating normally equipment
Source.When equipment breaks down or electrical control cabinet can cut off the power or alarm when irregular operating, by manually release after alarm from
It is dynamic to power on.The defect of the prior art is when controller occurs abnormal, and being easy to appear power supply can not disconnect in time, or work as people
After the alarm of work false dismissal, if controller is still abnormal at this time, and electric power starting will lead to the uneasiness of the equipment in electrical control cabinet
Entirely.
Above content is only used for auxiliary and understands the technical solution of the utility model, does not represent and recognizes that above content is existing
Technology.
Utility model content
The main purpose of the utility model is to provide a kind of safety protection circuit and electrical control cabinets, it is intended to solve existing
The control mode of electrical control cabinet is easy to cause the unsafe technical problem of the equipment in electrical control cabinet in technology.
To achieve the above object, the utility model provides a kind of safety protection circuit, is applied to electrical control cabinet, the electricity
Road includes alarm detection module, the first control module, the second control module, power module and reset key；Wherein,
The alarm detection module is separately connected with first control module and second control module, is used for
Alarm signal is sent when detecting danger signal to first control module and second control module；
The reset key is separately connected, for receiving with first control module and second control module
Reset signal is sent after to the single touch-control of user to first control module and second control module；
First control module is connect, for the hair when receiving the alarm signal with second control module
First control signal is sent to second control module, second control signal is sent when receiving the reset signal to described
Second control module；
Second control module, connect with the power module, for receiving the alarm signal or described
It is disconnected when one control signal, so that the power module powers off；Receiving the reset signal and the second control signal
Closure, so that the power module powers on.
Preferably, first control module includes controller and control contactor；The first end of the controller and institute
It states alarm detection module and the reset key is separately connected, the coil of the second end of the controller and the control contactor
Connection, the normally opened contact of the control contactor are connect with second control module.
Preferably, second control module includes safety relay and secure electrical contact device；The safety relay
First end is separately connected with the alarm detection module and the reset key, the second end of the safety relay and the peace
The coil connection of full electric contactor, the normally opened contact of the secure electrical contact device and the normally opened contact of the control contactor and institute
Power module is stated to be separately connected.
Preferably, the alarm detection module includes the sensor and report being set on the safety door of the electrical control cabinet
Alert device, the sensor are connect with the alarm, and the alarm is also distinguished with the controller and the safety relay
Connection.
Preferably, the sensor is photoelectric sensor.
Preferably, the power module includes power supply and power contactor, the line of the power supply and the power contactor
Circle connection, the coil of the power contactor are also connect with the normally opened contact of the secure electrical contact device.
Preferably, further include alarm lamp, connect with the normally-closed contact of the power contactor.
It preferably, further include display screen, the display screen is connect with the controller, for receiving in the controller
Display alarm information or repositioning information are corresponded to when alarm signal or reset signal.
The utility model also proposes that a kind of security protection electrical control cabinet, the security protection electrical control cabinet include as above
The safety protection circuit.
The utility model sends alarm signal when detecting danger signal by the alarm detection module in electrical control cabinet
Number to the first control module and the second control module；Reset key sends reset signal extremely after the single touch-control for receiving user
First control module and the second control module；First control module is connect with the second control module, when receiving alarm signal
First control signal is sent to the second control module, second control signal is sent when receiving reset signal to the second control mould
Block；Second control module is connect with power module, for the disconnection when receiving alarm signal or first control signal, so that electric
Source module power-off；Reset signal and second control signal closure are being received, so that power module powers on.Wherein due to passing through the
One control module and the second control module control power supply simultaneously, carry out duplicate protection to the equipment in electrical control cabinet, improve
Safety.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is a kind of functional block diagram of one embodiment of safety protection circuit of the utility model；
Fig. 2 is partial structural diagram in a kind of one embodiment of safety protection circuit of the utility model.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Alarm detection module | PLC | Controller |
| RST | Reset key | KS | Safety relay |
| 200 | First control module | KA1 | Control contactor |
| 300 | Second control module | KA2 | Secure electrical contact device |
| 400 | Power module | KM | Power contactor |
| VCC | Power supply | HL | Alarm lamp |
| HMI | Display screen | L | Firewire |
| H | Alarm | N | Zero curve |
| B | Sensor |
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that if related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction is only used for explaining opposite between each component under a certain particular pose (as shown in the picture)
Positional relationship, motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the
Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning
The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one
A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection scope of the requires of the utility model.
The utility model provides a kind of safety protection circuit applied to electrical control cabinet.
Referring to Fig.1, in one embodiment, the circuit includes alarm detection module 100, the first control module 200, second
Control module 300, power module 400 and reset key RST；Wherein, the alarm detection module 100, with first control
Module 200 and second control module 300 are separately connected, for sending alarm signal when detecting danger signal to described
First control module 200 and second control module 300；The reset key RST, with first control module 200 and
Second control module 300 is separately connected, for sending reset signal after the single touch-control for receiving user to described the
One control module 200 and second control module 300；First control module 200, with second control module 300
Connection is being received for sending first control signal when receiving the alarm signal to second control module 300
Second control signal is sent when the reset signal to second control module；Second control module 300, with the electricity
Source module 400 connects, for the disconnection when receiving the alarm signal or the first control signal, so that the power supply mould
Block 400 powers off；The reset signal and second control signal closure are being received, so that the power module 400 powers on.
It should be understood that the present embodiment realizes power supply by the first control module 200 and the second control module 300 jointly
The conducting and judgement of module 400, when detecting alarm signal, the first control module 200 with it is any in the second control module 300
One module is abnormal or disconnects, and power module 400 can all be caused to disconnect, when detecting reset signal, the first control module 200
It must be simultaneously closed off with the second control module 300, ability turn-on power module 400 is powered, dual to provide for electrical control cabinet
It ensures.
It should be noted that for alarm detection module 100, reset key RST, the first control module in the present embodiment
200, the software program used required for the signal interaction between the second control module 300 and power module 400 can refer to this
The field prior art is specifically arranged, and this programme focuses on the connection protected be between specific circuit module and circuit module
Structure.
Please with reference to Fig. 1 and Fig. 2, wherein Fig. 2 is the first control module in an embodiment, the second control module and electricity
The structural schematic diagram of source module.Further, first control module 200 includes controller PLC and control contactor KA1；
The first end of the controller PLC is separately connected with the alarm detection module 100 and the reset key RST, the control
The second end of device PLC is connect with the coil of the control contactor KA1, the normally opened contact of the control contactor KA1 with it is described
The connection of second control module 300.
It can be readily appreciated that the I0 foot of controller PLC is for receiving alarm signal, I1 foot is for receiving reset signal, Q0
Foot is connect with the coil of control contactor KA1, the normally opened contact of control contactor KA1 when controller PLC detects alarm signal
It disconnects, and exports first control signal to the second control module 300, control contactor KA1's is normal when detecting reset signal
Contact closure is opened, and exports second control signal to the second control module 300.
Further, second control module 300 includes safety relay KS and secure electrical contact device KA2；The peace
The first end of all relay KS is separately connected with the alarm detection module 100 and the reset key RST, the safety relay
The second end of device KS is connect with the coil of the secure electrical contact device KA2, the normally opened contact of the secure electrical contact device KA2 and institute
The normally opened contact and the power module 400 for stating control contactor KA1 are separately connected.
It can be readily appreciated that 1 foot of safety relay KS is for receiving alarm signal, 2 feet are for receiving reset signal, Q0
Foot is connect with the coil of secure electrical contact device KA2, disconnection when safety relay KS detects alarm signal or first control signal,
So that power module 400 powers off；Closure when detecting reset signal and second control signal at the same time, so that power module 400
Power supply.
Further, the alarm detection module 100 includes being set to the safety door (not shown) of the electrical control cabinet
On sensor B and alarm H, the sensor B connect with the alarm H, the alarm H also with the controller
PLC and the safety relay KS are separately connected.
In the present embodiment, the type of sensor can be customized according to user demand, by sensor to electrical control cabinet
Working environment is detected, such as light intensity, illuminance, radiation temperature measurement, gas composition analysis etc..Preferably, the sensor B
For photoelectric sensor.
It can be readily appreciated that photoelectric sensor is using sensor of the photoelectric cell as detecting element, it is first quilt
The variation of measurement is converted into the variation of optical signal, then further converts optical signals into electric signal by photoelectric cell.Photoelectricity
Detection method has many advantages, such as that precision is high, reaction is fast, non-contact, and can survey that parameter is more, and the structure of sensor is simple, form spirit
Multiplicity living.
Further, the power module 400 includes power supply VCC and power contactor KM, the power supply VCC and the electricity
The coil of source contactor KM connects, and the coil of the power contactor KM also connects with the normally opened contact of the secure electrical contact device KS
It connects.
It should be understood that power supply VCC can be electrically accessed by city, it is the power supply of each circuit module by AC-DC conversion.
When alarm H alarm, when secure electrical contact device KA2 is disconnected, power supply VCC stops power supply, after manual reset, control contactor
When KA1 is closed, secure electrical contact device KA2 closure, power supply VCC power supply.
Further, the safety protection circuit further includes alarm lamp HL, normally closed with the power contactor KM
Contact connection.
In the concrete realization, when sensor B detects danger signal, alarm H alarms, control contactor KA1 and peace
Full electric contactor KA2 is disconnected, and power supply VCC stops power supply, and power contactor KM closure, alarm lamp HL is bright, to remind use
It debugs and releases alarm in family.
Further, the safety protection circuit further includes display screen HMI, the display screen HMI and the controller PLC
Connection, for corresponding to display alarm information or repositioning information when the controller PLC receives alarm signal or reset signal.
It can be readily appreciated that controller PLC receives alarm signal when alarm H alarm, it is aobvious by display screen HMI
Show warning message, when manually pressing reset key RST, controller PLC receives reset signal, shows by display screen HMI
Repositioning information, i.e. informing user alarm are eliminated and system reset.
In addition it is also necessary to which, it is emphasized that foregoing circuit module is benefit on the basis of with existing software control procedure
It is combined with circuit elements such as controller, safety relay, contactor and reset keys to realize specific circuit control.
The present embodiment sends alarm signal when detecting danger signal by the alarm detection module in electrical control cabinet
To the first control module and the second control module；Reset key sends reset signal to after the single touch-control for receiving user
One control module and the second control module；First control module is connect with the second control module, the hair when receiving alarm signal
It send first control signal to the second control module, second control signal is sent when receiving reset signal to the second control mould
Block；Second control module is connect with power module, for the disconnection when receiving alarm signal or first control signal, so that electric
Source module power-off；Reset signal and second control signal closure are being received, so that power module powers on, to pass through the first control
Molding block and the second control module control power supply simultaneously, carry out duplicate protection to the equipment in electrical control cabinet, improve safety
Property.
The utility model also proposes that a kind of security protection electrical control cabinet, the security protection electrical control cabinet include as above
The circuit structure of the safety protection circuit, the safety protection circuit of the security protection electrical control cabinet can refer to above-mentioned reality
Example is applied, details are not described herein；It is understood that the security protection electrical control cabinet due to the present embodiment uses above-mentioned safety
The technical solution of protection circuit, therefore the security protection electrical control cabinet has above-mentioned all beneficial effects.
The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (9)
1. a kind of safety protection circuit is applied to electrical control cabinet, which is characterized in that including alarm detection module, the first control
Module, the second control module, power module and reset key；Wherein,
The alarm detection module is separately connected, for detecting with first control module and second control module
Alarm signal is sent when to danger signal to first control module and second control module；
The reset key is separately connected, for receiving use with first control module and second control module
Reset signal is sent after the single touch-control at family to first control module and second control module；
First control module is connect with second control module, for sending when receiving the alarm signal
One control signal sends second control signal when receiving the reset signal to described second to second control module
Control module；
Second control module, connect with the power module, for receiving the alarm signal or first control
Disconnection when signal processed, so that the power module powers off；The reset signal and second control signal closure are being received,
So that the power module powers on.
2. safety protection circuit as described in claim 1, which is characterized in that first control module includes controller and control
Contactor processed；The first end of the controller is separately connected with the alarm detection module and the reset key, the control
The second end of device is connect with the coil of the control contactor, the normally opened contact of the control contactor and the second control mould
Block connection.
3. safety protection circuit as claimed in claim 2, which is characterized in that second control module includes safety relay
And secure electrical contact device；The first end of the safety relay connects respectively with the alarm detection module and the reset key
Connect, the second end of the safety relay is connect with the coil of the secure electrical contact device, the secure electrical contact device it is normally opened
Contact is separately connected with the normally opened contact of the control contactor and the power module.
4. safety protection circuit as claimed in claim 3, which is characterized in that the alarm detection module is described including being set to
Sensor and alarm on the safety door of electrical control cabinet, the sensor are connect with the alarm, and the alarm is also
It is separately connected with the controller and the safety relay.
5. safety protection circuit as claimed in claim 4, which is characterized in that the sensor is photoelectric sensor.
6. the safety protection circuit as described in any one of claim 3 to 5, which is characterized in that the power module includes electricity
Source and power contactor, the power supply are connect with the coil of the power contactor, the coil of the power contactor also with institute
State the normally opened contact connection of secure electrical contact device.
7. safety protection circuit as claimed in claim 6, which is characterized in that further include alarm lamp, connect with the power supply
The normally-closed contact of tentaculum connects.
8. safety protection circuit as claimed in claim 7, which is characterized in that further include display screen, the display screen with it is described
Controller connection, for corresponding to display alarm information when the controller receives alarm signal or reset signal or resetting letter
Breath.
9. a kind of security protection electrical control cabinet, which is characterized in that including the peace as described in claim 1-8 any claim
Full protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920720008.3U CN209608325U (en) | 2019-05-17 | 2019-05-17 | Safety protection circuit and electrical control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920720008.3U CN209608325U (en) | 2019-05-17 | 2019-05-17 | Safety protection circuit and electrical control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209608325U true CN209608325U (en) | 2019-11-08 |
Family
ID=68408075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920720008.3U Active CN209608325U (en) | 2019-05-17 | 2019-05-17 | Safety protection circuit and electrical control cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209608325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113268132A (en) * | 2021-05-19 | 2021-08-17 | 维沃移动通信有限公司 | Power supply control method and device and electronic equipment |
-
2019
- 2019-05-17 CN CN201920720008.3U patent/CN209608325U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113268132A (en) * | 2021-05-19 | 2021-08-17 | 维沃移动通信有限公司 | Power supply control method and device and electronic equipment |
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