CN208352817U - The switch cabinet comprehensive monitoring device of quick overheating protection - Google Patents
The switch cabinet comprehensive monitoring device of quick overheating protection Download PDFInfo
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- CN208352817U CN208352817U CN201820927657.6U CN201820927657U CN208352817U CN 208352817 U CN208352817 U CN 208352817U CN 201820927657 U CN201820927657 U CN 201820927657U CN 208352817 U CN208352817 U CN 208352817U
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Abstract
The utility model discloses a kind of switch cabinet comprehensive monitoring devices of quick overheating protection, belong to switchgear monitoring field, its key points of the technical solution are that including being detachably fixed to be connected to the intracorporal casing of case, casing is connected with control circuit, control circuit includes temperature detecting module, temperature comparison module and refrigeration module, the temperature value of temperature detecting module detection contact or connector is simultaneously transferred to temperature comparison module, temperature comparison module is by temperature value compared with temperature reference value, when temperature value is greater than temperature reference value, temperature comparison module exports high level signal, refrigeration module receives high level signal and controls refrigerator start-up operation, solve the problems, such as that user can not in time cool down to switchgear when the temperature is excessively high in switchgear, reach switch cabinet comprehensive monitoring device detecting in switchgear when the temperature is excessively high automatically in switchgear The effect that portion cools down.
Description
Technical field
The utility model relates to switchgears to monitor field, in particular to the switch cabinet comprehensive monitoring of a kind of quick overheating protection
Device.
Background technique
The main function of switchgear be generated electricity in electric system, transmitted electricity, the conversion of distribution and electric energy during, carry out
Folding, control and protection electrical equipment.It usually requires that a switchgear is added in switchgear when using switchgear
Monitoring device carrys out the state of real-time monitoring switchgear.
The prior art can refer to the Chinese utility model patent that Authorization Notice No. is CN203605970U, and it discloses one kind
Low-tension switch cabinet comprehensive monitor system, including low-tension switch cabinet comprehensive monitor, radio temperature sensor, load current sensing
Device, the low-tension switch cabinet comprehensive monitor include the cpu circuit for driving each module running, and cpu circuit passes through switch electricity
Source circuit is connected with 220V AC power source, is connected by light sensor with LED liquid-crystal display, passes through zigbee wireless receiving and dispatching
Module is connected with RF power amplification, passes through zigbee wireless receiving and dispatching between low-tension switch cabinet comprehensive monitor and external temperature sensor
Module carries out data exchange, and cpu circuit is connected by 485 communication module of Phototube Coupling with intelligent electronic device.The utility model
Can in real time to inside the equipment such as low-voltage distribution cabinet or cable branch box connector and contact temperature carry out real-time monitoring, understanding connects
The temperature rise situation of head and contact, reduce switch cabinet contact caused by being overheated because of connector or contact burn out, the accidents such as large-area power-cuts
Generation.
As shown in Figure 1, low-voltage distribution cabinet or cable branch box include cabinet and the chamber door that is articulated on cabinet.
Above-mentioned switch cabinet comprehensive detection system when detecting switchgear nipple or excessively high contact temperature can not in time into
Row cooling, may just cause an accident before taking measures in user.
Utility model content
The purpose of the utility model is to provide a kind of switch cabinet comprehensive monitoring device of quick overheating protection, switch cabinet comprehensives
Monitoring device when the temperature is excessively high automatically cools down to inside switch cabinet detecting in switchgear.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of switch cabinet comprehensive monitoring device of quick overheating protection, including be detachably fixed and be connected to the intracorporal machine of case
Shell, casing are connected with control circuit, and control circuit includes: temperature detecting module, and the temperature detecting module includes being set to case
Temperature value and the output of intracorporal temperature sensor, temperature sensor real-time detection contact or connector；Temperature comparison module, it is described
Temperature comparison module is connected to temperature detecting module and receives the temperature value of temperature detecting module output, temperature comparison module packet
The 5th comparator is included, temperature value is compared by the 5th comparator with temperature reference value, when temperature value is higher than temperature reference value
Export high level signal；Refrigeration module, the refrigeration module are connected to temperature comparison module and in response to temperature comparison modules
The high level signal of output, refrigeration module include the refrigerator being fixedly connected on casing, when refrigeration module receives high level
Refrigerator is started to work after signal.
By using above scheme, the temperature value of contact or connector in temperature detecting module real-time detection switchgear simultaneously will
Temperature value is transferred to temperature comparison module, temperature comparison module by temperature value compared with temperature reference value, when temperature value is higher than temperature
High level signal is exported when spending a reference value to refrigeration module, and starting refrigerator is to switch after refrigeration module receives high level signal
Cool down inside cabinet, is detecting switch cabinet comprehensive monitoring device in switchgear when the temperature is excessively high automatically to inside switch cabinet
Cool down, guarantees that switch in-cabinet temperature is not too high or even temperature value is reduced to temperature reference before user overhauls
Value is following.
Preferably, refrigeration module further includes the blower being fixedly connected on casing, high level letter is received in refrigeration module
After number, blower starts to dry to box house.
By using above scheme, blower cools down to inside switch cabinet with refrigerator cooperation, and blower sends out refrigerator
Cold air out is blown on contact or connector, reinforces the cooling effect to contact or connector.
Preferably, control circuit further include: signal amplification module, signal amplification module are connected to temperature detecting module and system
Cold module, signal amplification module include amplifier, and amplifier receives the high level signal of temperature detecting module output and will be high electric
Ordinary mail number amplifies and exports to refrigeration module.
By using above scheme, signal amplification module passes again after amplifying the high level signal that temperature comparison module exports
It is defeated by refrigeration module, because the signal voltage of usually comparator output is all smaller, it is not easy to other circuits are controlled, so needing
Refrigeration module is controlled again after amplifier amplification.
Preferably, control circuit further include: alarm module, the alarm module are connected to temperature comparison module and respond
In the high level signal of temperature comparison module output, alarm is issued after alarm module receives high level signal.
By using above scheme, alarm module starts to report after the high level signal for receiving temperature comparison module output
It is alert, it reminds surrounding people that switch in-cabinet temperature is excessively high, personnel is enable to make a response in time.
Preferably, alarm module includes the buzzer being fixedly connected on casing, when alarm module receives high level letter
Buzzer obtains electric sending alarm after number.
By using above scheme, buzzer can issue alarm under warning circuit control, can effectively remind periphery
Personnel.
Preferably, alarm module includes the alarm lamp being fixedly connected on casing, when alarm module receives high level letter
Alarm lamp obtains electric light after number.
By using above scheme, alarm lamp can light under warning circuit control, can have in a noisy environment
Effect reminds periphery personnel.
Preferably, control circuit further include: current detection module, the current detection module include arranged in the box body
Current transformer, the current value of current transformer detection switch cabinet major loop and output；Current comparing module, the electric current compare
Module connects current detection module and alarm module, current comparing module include third comparator, the 4th comparator and electrical connection
In second or door of third comparator and the 4th comparator output terminal, third comparator by current value compared with maximum current value,
High level signal is exported if current value is higher than maximum current value to second or door, the 4th comparator is by current value and minimum current
Value compares, if current value lower than exporting high level signal if minimum current value to second or door, second or door receive it is any high
Level signal then exports high level signal to alarm module.
By using above scheme, current detection module detects the current value of power distribution cabinet, and current comparing module is by current value
Compared with maximum current value and minimum current value, alarm module is controlled if current value is beyond maximum current value or minimum current value
Alarm.
Preferably, control circuit further include: voltage detection module, the voltage detection module include voltage transformer, electricity
Press the voltage value of mutual inductor detection switch cabinet major loop and output；Voltage comparison module, the voltage comparison module connect electric current
Detection module and alarm module, voltage comparison module include first comparator, the second comparator and are electrically connected to first comparator
With first or door of the second comparator output terminal, first comparator by voltage value compared with maximum voltage value, when voltage value is greater than
First comparator exports high level signal to first or door when maximum voltage value, and the second comparator is by voltage value and minimum amount of voltage that
Compare, when voltage value is less than minimum amount of voltage that, the second comparator export high level signal to first or door, and first or door reception
High level signal is then exported to alarm module to any high level signal.
By using above scheme, voltage detection module detects the voltage value of power distribution cabinet, and voltage comparison module is by voltage value
Compared with maximum voltage value and minimum amount of voltage that, alarm module is controlled if voltage value is beyond maximum voltage value or minimum amount of voltage that
Alarm.
In conclusion the utility model has the following beneficial effects:
1. temperature value is simultaneously transferred to temperature by the temperature value of contact or connector in temperature detecting module real-time detection switchgear
Comparison module is spent, temperature comparison module compared with temperature reference value, exports temperature value when temperature value is higher than temperature reference value
High level signal is to refrigeration module, and inside switch cabinet drops in starting refrigerator after refrigeration module receives high level signal
Temperature makes switch cabinet comprehensive monitoring device cool down automatically to inside switch cabinet when the temperature is excessively high detecting in switchgear,
User guarantees that switch in-cabinet temperature is not too high or even temperature value is reduced to temperature reference value or less before being overhauled；
2. blower cools down to inside switch cabinet with refrigerator cooperation, the cold air that refrigerator issues is blown to touching by blower
On head or connector, reinforce the cooling effect to contact or connector；
3. alarm module starts to alarm after the high level signal for receiving temperature comparison module output, people around is reminded
Member's switch in-cabinet temperature is excessively high, and personnel is enable to make a response in time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of background technique；
Fig. 2 is the structural schematic diagram of embodiment；
Fig. 3 is the cross-sectional view of prominent box inner structure in embodiment；
Fig. 4 is the schematic diagram of prominent switch cabinet comprehensive detection device major part in embodiment；
Fig. 5 is the circuit diagram of prominent voltage detection module and voltage comparison module in embodiment；
Fig. 6 is the circuit diagram of prominent current detection module and current comparing module in embodiment；
Fig. 7 be prominent temperature detecting module in embodiment, temperature comparison module, signal amplification module and refrigeration module electricity
Road schematic diagram；
Fig. 8 is the circuit diagram of prominent alarm module and gating module in embodiment；
Fig. 9 is the circuit diagram of the prominent module that pushes in embodiment；
Figure 10 is the circuit diagram of prominent time delay module in embodiment.
In figure, 1, cabinet；11, chamber door；2, casing；21, push component；211, electric pushrod；22, refrigerator；23, wind
Machine；24, electromagnetic lock；25, voltage transformer；26, current transformer；27, temperature sensor；3, voltage detection module；31, voltage
Comparison module；311, first or door；4, current detection module；41, current comparing module；411, second or door；5, temperature detection
Module；51, temperature comparison module；52, signal amplification module；6, refrigeration module；7, alarm module；8, gating module；9, it pushes
Module；91, time delay module；911,555 timer；C1, capacitor；D1, first diode；D2, the second diode；SB1, first are pressed
Button switch；SB2, the second button switch；HA, buzzer；LED, alarm lamp；T1, first comparator；T2, the second comparator；T3,
Third comparator；T4, the 4th comparator；T5, the 5th comparator；T6, amplifier；VCC, power supply；KA1, the first electromagnetic coil；
KA2, the second electromagnetic coil；KA3, third electromagnetic coil；KA4, the 4th electromagnetic coil；KA5, the 5th electromagnetic coil；KA6, the 6th
Electromagnetic coil；KA7, the 7th electromagnetic coil；KA8, the 8th electromagnetic coil；KA9, the 9th electromagnetic coil；KA1-1, the first normally opened touching
Point；KA2-1, the second normally opened contact；KA3-1, third normally opened contact；KA4-1, the 4th normally opened contact；KA5-1, the 5th normally closed touching
Point；KA6-1, the 6th normally opened contact；KA7-1, the 7th normally opened contact；KA8-1, the 8th normally opened contact；KA9-1, the 9th normally closed touching
Point；R1, first resistor；R2, second resistance；R3,3rd resistor；R4, the 4th resistance；R5, the 5th resistance；R6, the 6th resistance；
R7, the 7th resistance；R8, the 8th resistance；R9, the 9th resistance；R10, the tenth resistance；R11, eleventh resistor；R12, the 12nd electricity
Resistance；R13, thirteenth resistor；R14, the 14th resistance；R15, the 15th resistance；R16, the 16th resistance；R17, the 17th electricity
Resistance；R18, the 18th resistance；R19, the 19th resistance；R20, the 20th resistance；R21, the 21st resistance；R22, the 22nd
Resistance；R23, the 23rd resistance；R24, the 24th resistance；R25, the 25th resistance；R26, the 26th resistance；R27,
27th resistance.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.The wherein identical attached drawing of identical components
Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to
It is the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from particular elements geometry
The direction at center.
Embodiment: a kind of switch cabinet comprehensive monitoring device of quick overheating protection, as shown in Figures 2 and 3, including it is detachable
The casing 2 that is fixedly connected in cabinet 1, push component 21 and the electromagnetism that is fixedly connected on chamber door 11 being connected on casing 2
Lock 24.Electromagnetic lock 24 can lock chamber door 11 when obtaining electric.The component 21 that pushes includes the electric pushrod being rotationally connected on casing 2
211,211 other end of electric pushrod is rotationally connected on chamber door 11, and electric pushrod 211 can push away chamber door 11 in the case where obtaining electricity condition
It opens.The first button switch SB1 and the second button switch SB2 are fixedly connected on electromagnetic lock 24, by opening the first button switch SB1
It can make 24 power loss of electromagnetic lock, contact the locking to chamber door 11, press the i.e. controllable electric pushrod 211 of the second button switch SB2
Chamber door 11 is pushed open.
As shown in Figure 3 and Figure 4, it is fixedly connected with refrigerator 22 on cabinet 1, is fixedly connected with blower on refrigerator 22
23.Refrigerator 22 can spray cold air to cooling down in cabinet 1, and the cold air that refrigerator 22 sprays can be blown to case by blower 23
Cool down on contact or connector in body 1 to it.
As shown in figure 4, being fixedly connected with buzzer HA and alarm lamp LED on cabinet 1.In switch cabinet comprehensive monitoring device
Detect that buzzer HA and alarm lamp LED will be sounded an alarm switchgear when something goes wrong.
As shown in figure 5, casing 2 is connected with control circuit, control circuit includes voltage detection module 3 and voltage comparison module
31, voltage detection module 3 includes the voltage transformer 25 for being connected to switchgear major loop, 25 real-time monitoring of voltage transformer switch
The voltage value of cabinet major loop and output.Voltage comparison module 31 connects voltage detection module 3, and voltage comparison module 31 includes being electrically connected
It is connected to the second resistance R2 and the 5th resistance R5 of voltage transformer 25, the second resistance R2 other end is electrically connected with first comparator T1
And second resistance R2 is electrically connected to the positive input of first comparator T1, the negative input electrical connection of first comparator T1
There is first resistor R1, maximum voltage value Vref1 is by first resistor R1 input first comparator T1.First comparator T1's is negative
It is electrically connected with 3rd resistor R3 to input terminal, the 3rd resistor R3 other end is electrically connected with power supply VCC.The forward direction of first comparator T1
Input terminal and output end are electrically connected with the 4th resistance R4, and the output end of first comparator T1 is electrically connected with first or door 311.5th
The resistance R5 other end is electrically connected with the second comparator T2 and the 5th resistance R5 is electrically connected to the positive of the second comparator T2 and inputs
End, the negative input of the second comparator T2 are electrically connected with the 6th resistance R6, and minimum amount of voltage that Vref2 is defeated by the 6th resistance R6
Enter the second comparator T2, the negative input of the second comparator T2 is electrically connected with the 8th resistance R8, the 8th resistance R8 other end electricity
It is connected with power supply VCC.The negative input and output end of second comparator T2 is electrically connected with the 7th resistance R7.Second comparator T2
Output end be electrically connected to the input terminal of first or door 311, first or the output end of door 311 be electrically connected with the first electromagnetic coil
KA1, the first electromagnetic coil KA1 other end are electrically connected with the 9th resistance R9, the ground connection setting of the 9th resistance R9 other end.Mutual induction of voltage
In the voltage value input first comparator T1 and the second comparator T2 that device 25 will test, first comparator T1 is by voltage value and most
Big voltage value Vref1 compares, and when voltage value is greater than maximum voltage value Vref1, exports high level signal to first or door 311.
Second comparator T2 compared with minimum amount of voltage that Vref2, when voltage value is less than minimum amount of voltage that Vref2, exports voltage value
High level signal gives first or door 311.When first or door 311 receive any high level signal when just export high level signal and make
First electromagnetic coil KA1 obtains electric.
As shown in fig. 6, control circuit further includes current detection module 4 and current comparing module 41, current detection module 4 is wrapped
The current transformer 26 for being connected to switchgear major loop is included, the current value of 26 real-time detection switchgear major loop of current transformer is simultaneously
Output.Current comparing module 41 includes eleventh resistor R11 and the 14th resistance R14, the electrical connection of the eleventh resistor R11 other end
There is third comparator T3 and eleventh resistor R11 is electrically connected to the positive input of third comparator T3, third comparator T3
Negative input be electrically connected with the tenth resistance R10, maximum current value Vref3 inputs third comparator by the tenth resistance R10
In T3.The negative input of third comparator T3 is electrically connected with twelfth resistor R12, the electrical connection of the twelfth resistor R12 other end
There is power supply VCC.The positive input and output end of third comparator T3 is electrically connected with thirteenth resistor R13, third comparator T3
Output end be electrically connected with second or door 411.The 14th resistance R14 other end is electrically connected with the 4th comparator T4 and the 14th
Resistance R14 is electrically connected to the positive input of the 4th comparator T4, and the negative input of the 4th comparator T4 is electrically connected with the tenth
Five resistance R15, minimum current value Vref4 input the 4th comparator T4, the negative sense of the 4th comparator T4 by the 15th resistance R15
Input terminal is electrically connected with the 17th resistance R17, and the 17th resistance R17 other end is electrically connected with power supply VCC.4th comparator T4's
Negative input and output end are electrically connected with the 16th resistance R16.The output end of 4th comparator T4 is electrically connected to second or door
411 input terminal, second or the output end of door 411 be electrically connected with the second electromagnetic coil KA2, the second electromagnetic coil KA2 other end
It is electrically connected with the 18th resistance R18, the ground connection setting of the 18th resistance R18 other end.The electric current that current transformer 26 will test
Value input third comparator T3 and the 4th comparator T4 in, third comparator T3 by current value compared with maximum current value Vref3,
When current value is greater than maximum current value Vref3, high level signal is exported to second or door 411.4th comparator T4 is by electric current
Value is compared with minimum current value Vref4, when current value is less than minimum current value Vref4, export high level signal to second or
Door 411.When second or door 411 receive any high level signal when just export high level signal and obtain the second electromagnetic coil KA2
Electricity.
As shown in fig. 7, control circuit further includes temperature detecting module 5, temperature comparison module 51,52 and of signal amplification module
Refrigeration module 6, temperature detecting module 5 include the temperature sensor 27(that is fixedly connected in cabinet 1 referring to Fig. 3), temperature sensing
27 real-time detection inside switch cabinet temperature value of device simultaneously exports.Temperature comparison module 51 includes be electrically connected to temperature sensor 27 the
Five comparator T5 and temperature sensor 27 are electrically connected to the positive input of the 5th comparator T5, temperature reference value Vref5 from
The negative input of 5th comparator T5 inputs in the 5th comparator T5, and the negative input of the 5th comparator T5 is electrically connected with the
19 resistance R19, the 19th resistance R19 other end are electrically connected with power supply VCC.The positive input of 5th comparator T5 and output
End is parallel with the 20th resistance R20.5th comparator T5 by temperature value compared with temperature reference value Vref5, when temperature value is greater than
When temperature reference value Vref5, high level signal is exported.Signal amplification module 52 includes being electrically connected to the 5th comparator T5 output end
Amplifier T6 and the output end of the 5th comparator T5 be electrically connected to the positive input of amplifier T6, the negative sense of amplifier T6
Input terminal and output end are parallel with the 22nd resistance R22, and the negative input of amplifier T6 is electrically connected with the 21st resistance
R21, the 21st resistance R21 other end are electrically connected with power supply VCC.The output end of amplifier T6 is electrically connected with third electromagnetic coil
KA3, the other end of third electromagnetic coil KA3 are electrically connected with the 4th electromagnetic coil KA4, and the 4th electromagnetic coil KA4 other end is electrically connected
It is connected to the 23rd resistance R23, the ground connection setting of the 23rd resistance R23 other end.It is defeated that amplifier T6 receives the 5th comparator T5
High level signal out and after high level signal is amplified output make the to third electromagnetic coil KA3 and the 4th electromagnetic coil KA4
Three electromagnetic coil KA3 and the 4th electromagnetic coil KA4 obtain electric.
As shown in fig. 7, refrigeration module 6 includes the power supply VCC and the 4th normally opened contact KA4-1 being serially connected, refrigerator 22
It is electrically connected to the 4th one end normally opened contact KA4-1, blower 23 is electrically connected to 22 other end of refrigerator, and 23 other end of blower ground connection sets
It sets.When the 4th electromagnetic coil KA4 obtains electric, the 4th normally opened contact KA4-1 closure, when refrigerator 22 and blower 23 must establish beginning work by cable
Make.
As shown in figure 8, control circuit further includes alarm module 7 and gating module 8, alarm module 7 includes power supply VCC, electricity
Source VCC is electrically connected with the first normally opened contact KA1-1, and buzzer HA is electrically connected to first one end normally opened contact KA1-1, alarm lamp
LED is electrically connected to the buzzer HA other end, and the first normally opened contact KA1-1 is parallel with the second normally opened contact KA2-1, the second normally opened touching
Point KA2-1 is parallel with third normally opened contact KA3-1.The alarm lamp LED other end is electrically connected with the 5th electromagnetic coil KA5, the 5th electricity
The magnetic coil KA5 other end is electrically connected with the 6th electromagnetic coil KA6, and the 6th electromagnetic coil KA6 other end is electrically connected with the 24th
Resistance R24, the ground connection setting of the 24th resistance R24 other end.As the first electromagnetic coil KA1, the second electromagnetic coil KA2, third
When electromagnetic coil KA3 obtains electric, the first normally opened contact KA1-1, the second normally opened contact KA2-1 and third normally opened contact KA3-1 closure,
When any closure in the first normally opened contact KA1-1, the second normally opened contact KA2-1 and third normally opened contact KA3-1, then buzzer
HA, alarm lamp LED, the 5th electromagnetic coil KA5 and the 6th electromagnetic coil KA6 it is electric, buzzer HA and alarm lamp LED issue police
Report.Gating module 8 includes power supply VCC, and the first button switch SB1 is electrically connected to the one end power supply VCC, and the first button switch SB1 is another
One end is electrically connected with the 5th normally-closed contact KA5-1, and electromagnetic lock 24 is electrically connected to the 5th normally-closed contact KA5-1 other end, electromagnetic lock
24 other ends are electrically connected with the 25th resistance R25, the ground connection setting of the 25th resistance R25 other end.When the 5th electromagnetic coil
When KA5 obtains electric, the 5th normally-closed contact KA5-1 is disconnected, 24 power loss of electromagnetic lock.When the first button switch SB1 is by by opening, electromagnetic lock
24 also power loss contact the locking to chamber door 11.
As shown in Figure 9 and Figure 10, control circuit further includes push module 9 and time delay module 91, and the module that pushes 9 includes power supply
VCC, power supply VCC are electrically connected with the 6th normally opened contact KA6-1, and the 6th normally opened contact KA6-1 other end is electrically connected with the 7th electromagnetism
Coil KA7, electric pushrod 211 are electrically connected to the 7th electromagnetic coil KA7 other end, and the 6th normally opened contact KA6-1 is parallel with the 7th
Normally opened contact KA7-1, the second button switch SB2 are parallel to the 7th both ends normally opened contact KA7-1.Electric pushrod 211 other end electricity
It is connected with the 8th electromagnetic coil KA8, the 8th electromagnetic coil KA8 other end is electrically connected with the 9th normally-closed contact KA9-1, and the 9th is normally closed
The ground connection setting of the contact KA9-1 other end.When the 6th electromagnetic coil KA6 obtains electric, the 6th normally opened contact KA6-1 closure is electronic to push away
Bar 211, the 7th electromagnetic coil KA7 and the 8th electromagnetic coil KA8 obtain electric, the start-up operation of electric pushrod 211, the 7th electromagnetic coil
KA7 controls the 7th normally opened contact KA7-1 closure, forms latching circuit, and timely 6th normally opened contact KA6-1 is disconnected, electric pushrod
211 still work once electrifieds.Electric pushrod 211, the 7th electromagnetic coil KA7 and the 8th electromagnetism can be made by pressing the second button switch SB2 also
Coil KA8 obtains electric.
As shown in Figure 9 and Figure 10, time delay module 91 includes that No. 1 pin of 555 timer, 911,555 timer 911 is grounded
Setting, is parallel with capacitor C1 between No. 1 pin and No. 2 pins of 555 timers 911, it is normally opened that the both ends capacitor C1 are parallel with the 8th
Contact KA8-1.No. 2 pins of 555 timers 911 are connected with No. 6 pins, No. 6 pins and No. 7 pin phases of 555 timers 911
Even.It is parallel with the 27th resistance R27 between No. 6 pins and No. 4 pins of 555 timers 911, No. 2 of 555 timers 911
The 26th resistance R26 is parallel between pin and No. 4 pins, No. 4 pins of 555 timers 911 are connected with No. 8 pins, and 555
The second diode D2, No. 8 pins electrical connection of 555 timers 911 are parallel between No. 5 pins and No. 8 pins of timer 911
There is power supply VCC, is parallel with first diode D1 between No. 3 pins and No. 1 pin of 555 timers 911, first diode D1's
Both ends are parallel with the 9th electromagnetic coil KA9.When the 8th electromagnetic coil KA8 obtains electric, the 8th normally opened contact KA8-1 closure, 555 is fixed
When device 911 it is electric, to obtain the 9th electromagnetic coil KA9 electric for the delay of 555 timers 911, and the 9th electromagnetic coil KA9 makes the 9th normally closed touching
Point KA9-1 is disconnected, and makes electric pushrod 211, the 7th electromagnetic coil KA7 and the 8th electromagnetic coil KA8 power loss, electric pushrod 211 stops
It only works, electric pushrod 211 just pushes chamber door 11 open completely at this time.
Usage mode: the casing 2 of switch cabinet comprehensive monitoring device is first installed to detected switchgear by staff
In cabinet 1, make the contact or connector of 23 face switchgear of blower, voltage transformer 25 and current transformer 26 are installed to switch
On cabinet major loop, temperature sensor 27 is installed in cabinet 1, electric pushrod 211 is installed to chamber door 11 far from 2 one end of casing
Inside enables electric pushrod 211 to push chamber door 11 open, then electromagnetic lock 24 is installed on chamber door 11, and electromagnetic lock 24 is made to lock case
Door 11.Complete the installation of switch cabinet comprehensive monitoring device.
Switch cabinet comprehensive monitoring device starts to carry out real-time monitoring to switchgear, when switch cabinet comprehensive monitoring device monitors
When voltage, electric current or the temperature of switchgear occur abnormal, buzzer HA and alarm lamp LED are sounded an alarm, and remind periphery personnel.Together
When 24 power loss of electromagnetic lock, contact locking to chamber door 11, electric pushrod 211 pushes chamber door 11 open, and staff's repairing is facilitated to open
Close cabinet.
If the temperature value in switchgear is excessively high, refrigerator 22 and blower 23 begin to work, drop to inside switch cabinet
Temperature.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of switch cabinet comprehensive monitoring device of quick overheating protection, including being detachably fixed the machine being connected in cabinet (1)
Shell (2), which is characterized in that casing (2) is connected with control circuit, and control circuit includes:
Temperature detecting module (5), the temperature detecting module (5) include the temperature sensor (27) being set in cabinet (1), temperature
Spend temperature value and the output of sensor (27) real-time detection contact or connector；
Temperature comparison module (51), the temperature comparison module (51) are connected to temperature detecting module (5) and receive temperature inspection
The temperature value of module (5) output is surveyed, temperature comparison module (51) includes the 5th comparator (T5), and the 5th comparator (T5) is by temperature
Value is compared with temperature reference value, exports high level signal when temperature value is higher than temperature reference value；
Refrigeration module (6), the refrigeration module (6) are connected to temperature comparison module (51) and in response to temperature comparison modules
(51) high level signal exported, refrigeration module (6) include the refrigerator (22) being fixedly connected on casing (2), when refrigeration mould
Refrigerator (22) is started to work after block (6) receives high level signal.
2. the switch cabinet comprehensive monitoring device of quick overheating protection according to claim 1, it is characterised in that: refrigeration module
It (6) further include the blower (23) being fixedly connected on casing (2), after refrigeration module (6) receives high level signal, blower
(23) start to dry inside cabinet (1).
3. the switch cabinet comprehensive monitoring device of quick overheating protection according to claim 1, which is characterized in that control circuit
Further include:
Signal amplification module (52), signal amplification module (52) are connected to temperature detecting module (5) and refrigeration module (6), signal
Amplification module (52) includes amplifier (T6), and amplifier (T6) receives the high level signal of temperature detecting module (5) output and will
High level signal, which amplifies and exports, gives refrigeration module (6).
4. the switch cabinet comprehensive monitoring device of quick overheating protection according to claim 1, which is characterized in that control circuit
Further include:
Alarm module (7), the alarm module (7) are connected to temperature comparison module (51) and in response to temperature comparison modules
(51) high level signal exported issues alarm after alarm module (7) receives high level signal.
5. the switch cabinet comprehensive monitoring device of quick overheating protection according to claim 4, it is characterised in that: alarm module
It (7) include the buzzer (HA) being fixedly connected on casing (2), buzzer after alarm module (7) receives high level signal
(HA) electric sending alarm is obtained.
6. the switch cabinet comprehensive monitoring device of quick overheating protection according to claim 4, it is characterised in that: alarm module
It (7) include the alarm lamp (LED) being fixedly connected on casing (2), alarm lamp after alarm module (7) receives high level signal
(LED) electric light is obtained.
7. the switch cabinet comprehensive monitoring device of quick overheating protection according to claim 4, which is characterized in that control circuit
Further include:
Current detection module (4), the current detection module (4) include the current transformer (26) being set in cabinet (1), electricity
The current value of current transformer (26) detection switch cabinet major loop and output；
Current comparing module, current comparing module connection current detection module (4) and alarm module (7), electric current compares mould
Block includes third comparator (T3), the 4th comparator (T4) and is electrically connected to third comparator (T3) and the 4th comparator (T4) is defeated
Second or the door (411) of outlet, third comparator (T3) by current value compared with maximum current value, if current value is higher than maximum electricity
Flow valuve then exports high level signal to second or door (411), the 4th comparator (T4) by current value compared with minimum current value, if
Current value then exports high level signal to second or door (411) lower than minimum current value, second or door (411) receive it is any high
Level signal then exports high level signal and gives alarm module (7).
8. the switch cabinet comprehensive monitoring device of quick overheating protection according to claim 4, which is characterized in that control circuit
Further include:
Voltage detection module (3), the voltage detection module (3) include voltage transformer (25), voltage transformer (25) detection
The voltage value of switchgear major loop and output；
Voltage comparison module (31), voltage comparison module (31) connection current detection module (4) and alarm module (7), electricity
Pressure comparison module (31) includes first comparator (T1), the second comparator (T2) and is electrically connected to first comparator (T1) and second
Voltage value compared with maximum voltage value, is worked as voltage by first or door (311) of comparator (T2) output end, first comparator (T1)
First comparator (T1) exports high level signal to first or door (311), the second comparator (T2) when value is greater than maximum voltage value
By voltage value compared with minimum amount of voltage that, when voltage value is less than minimum amount of voltage that, the second comparator (T2) exports high level signal
To first or door (311), first or door (311) receive any high level signal and then export high level signal to alarm module
(7)。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820927657.6U CN208352817U (en) | 2018-06-14 | 2018-06-14 | The switch cabinet comprehensive monitoring device of quick overheating protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820927657.6U CN208352817U (en) | 2018-06-14 | 2018-06-14 | The switch cabinet comprehensive monitoring device of quick overheating protection |
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| CN208352817U true CN208352817U (en) | 2019-01-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111683490A (en) * | 2020-06-05 | 2020-09-18 | 孙勉 | Railway traffic signal control box |
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2018
- 2018-06-14 CN CN201820927657.6U patent/CN208352817U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111683490A (en) * | 2020-06-05 | 2020-09-18 | 孙勉 | Railway traffic signal control box |
| CN111683490B (en) * | 2020-06-05 | 2021-05-28 | 文登市有利成套电源设备有限公司 | Railway traffic signal control box |
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