CN206531831U - Air monitering warning system in switch cabinet - Google Patents
Air monitering warning system in switch cabinet Download PDFInfo
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- CN206531831U CN206531831U CN201720149342.9U CN201720149342U CN206531831U CN 206531831 U CN206531831 U CN 206531831U CN 201720149342 U CN201720149342 U CN 201720149342U CN 206531831 U CN206531831 U CN 206531831U
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- cabinet
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- 238000001514 detection method Methods 0.000 claims abstract description 26
- 230000000505 pernicious effect Effects 0.000 claims abstract description 6
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Respiratory Apparatuses And Protective Means (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The utility model discloses air monitering warning system in a kind of switch cabinet, gas detection cell is provided with switch cubicle, the gas detection cell exports induced signal to main control unit, the main control unit output drive signal is to the air exhaust units of the switch cubicle, and the gas detection cell is by the sensors of MWA4218 0901 collection pernicious gas signal.The utility model can in real time in monitoring switch cabinet cabinet air regime, and can be alarmed when occurring abnormal, protective efficient switch cabinet maintainer and equipment safety.
Description
Technical field
The utility model is related to electric power facility field, more particularly to power switch cabinet.
Background technology
As China modernizes economic fast development, net capacity is continuously increased, to ensure the power transmission and distribution matter of power network
Amount, power system proposes higher and higher requirement to equipment for power transmission and distribution.From the cement spaced switch cabinet of early stage to fixed
Switch cubicle, then to floor type handcart switch cubicle, present intermediate switchgear cabinet is gone so far as, the performance of switch cubicle is progressively carried
Height, especially switch cubicle prevent maloperation and ensure equipment and attendant's secure context be even more obtained certain development and
It is perfect.
At present, there is the component of some special materials in partial switch cabinet, one can be slowly discharged in operation use
A little toxic and harmful gas, it is long-term to close operating and do not open cabinet maintenance if these switch cubicles are in normal operation, it can be accumulated in cabinet
Gather substantial amounts of toxic and harmful gas, if now staff opens cabinet maintenance, the healthy of staff can be caused harm.
Utility model content
Technical problem to be solved in the utility model is to realize that one kind has air monitering warning function in cabinet, and is transported
Air monitering warning system in the reliable and stable switch cabinet of row.
To achieve these goals, the technical solution adopted in the utility model is：Air monitering alarm system in switch cabinet
Gas detection cell is provided with system, switch cubicle, the gas detection cell exports induced signal to main control unit, the master control list
First output drive signal is to the air exhaust units of the switch cubicle, and main control unit output alarm signal is to warning device, the alarm dress
Put and be fixed on switch cubicle and/or in Control Room, the gas detection cell gathers harmful gas by MWA4218-0901 sensors
Body signal.
Electromagnetic lock, the main control unit output drive signal to electromagnetism are provided between the cabinet door and doorframe of the switch cubicle
Lock.
States of cabinet door detection unit is provided between the cabinet door and doorframe of the switch cubicle, the states of cabinet door detection unit is defeated
Door opening and closing state signal offer for sale to main control unit.
The switch cubicle is externally provided with personnel's sensing unit, and personnel's sensing unit exports induced signal to main control unit.
The utility model can in real time in monitoring switch cabinet cabinet air regime, and can be reported when occurring abnormal
It is alert, protective efficient switch cabinet maintainer and equipment safety.
Brief description of the drawings
The content to every width accompanying drawing expression in the utility model specification is briefly described below：
Fig. 1 is air monitering warning system block diagram in switch cabinet；
Fig. 2 is PMU circuit diagram；
Fig. 3 is master control element circuit figure；
Fig. 4 is gas detection cell circuit diagram
Fig. 5 is air exhaust units circuit diagram；
Fig. 6 states of cabinet door detection cell circuit figures；
Fig. 7,8 are RS485 communication unit circuit diagrams.
Embodiment
As shown in figure 1, air monitering warning system mainly includes PMU, main control unit, gas in switch cabinet
Body detection unit, air exhaust units, states of cabinet door detection unit and RS485 communication units and warning device.
PMU is used for the DC12V Power converts input to DC6V and VCC (3.3V), is the other units of system
Suitable working power is provided.As shown in Fig. 2 PMU is by switching regulator IC LM2596, linear voltage stabilization chip
AMS1117 and peripheral components composition, P2 is power input interface, and it is defeated that R1, R2 and C1 are used for configuration switch voltage stabilizing chip LM2596
Go out pin OUT output voltage values, C2, C3, C4, C4 and C6 are power filtering capacitor, and L1 is feedback inductance.VCC/6 is steady for switch
Chip LM2596 voltage output interfaces are pressed, VCC is linear voltage stabilization chip AMS1117 voltage output interfaces.
Main control unit is used to control to coordinate each functional unit, and realizes onsite alarming when there is personnel to break in switch cubicle
Function, as shown in figure 3, main control unit is made up of controller STM32F103RBT6 and peripheral circuit, U4 is controller in figure
STM32F103RBT6, C6, C17, Y1 and R15 composition main control unit clock circuit, R18 in clock source, figure is provided for system work
It is that controller Starting mode sets resistance with R17, for setting on controller after electricity R20, C22 and S1 group in Starting mode, figure
Into controller reset circuit, system electrification automatically resets first after starting, and the course of work can pass through button into staff
R14, R16 and P3 constitute system drive burning interface in S1 reset controllers, figure, for system debug.
Gas detection cell is used in detection switch cabinet whether pernicious gas to be exceeded, can start row when pernicious gas is exceeded
Gas is fanned, and the pernicious gas in switch cubicle is discharged, and gas detection cell is arranged in cabinet, and the gas parameter signal of collection is conveyed
To main control unit, as shown in figure 4, gas detection cell is made up of MWA4218-0901 sensors and discharge circuit, JP1 is sensing
Device MWA4218-0901 interfaces, wherein JP1 the 1st and the 3rd pin is sensor MWA4218-0901 power pins, the 2nd pin
For sensor output pin, sensor output signal inputs the in-phase input end of amplifier chip LM358 chips through resistance R3, and passes through
Cross after amplifier from the output of Out1 pins, be input to the pin of controller the 8th and be AD converted, and finally determine that pernicious gas is dense
Degree.
Air exhaust units are arranged on the side or top of switch cubicle, and air exhaust units include air draft panel and installed in air draft panel
On blower fan, air draft panel can install Air Filter as needed.As shown in figure 5, blower fan is by motor drive ic L6203 and outside
Component driving is enclosed, L6203 is motor drive ic, and the pin EN of chip the 11st is connected with the pin of controller the 14th, for enabling/disabling
L6203；Chip the 5th, 6 pin IN1, IN2 are connected with controller the 15th, 16 pins respectively, are rotated for controlled motor；C10 is core
Piece internal reference circuit charges；R9 provides control electric current for motor feedback；C7, C14 are the external bootstrap capacitor of chip, respectively with core
Piece Boot1 is connected with Boot2, for ensureing that driving chip internal Ll DMOS is effective；M1 is fan electromotor interface；D2、D3
For fly-wheel diode, for protecting driving chip to be not damaged by when motor steering switches.
States of cabinet door detection unit is provided between the cabinet door and doorframe of switch cubicle, states of cabinet door detection unit output cabinet door is opened
Whether off status signal to main control unit, its door for being used for detection switch cabinet is in opening, can be with control system only in door
Run under closed mode, it is possible to alarmed in cabinet door abnormal start-up.States of cabinet door detection unit member is by sensor interface
Circuit and current-limiting resistance composition, as shown in fig. 6, JP3 is switch cubicle interface, for installing travel switch, travel switch monitoring letter
Number the pin of controller the 53rd is input to by pull-up resistor R24 and current-limiting resistance R25, by controller judge switch cabinet door whether by
Open.
Can be respectively provided with personnel's sensing unit inside and outside switch cubicle, personnel's sensing unit can be used for be inside and outside detection switch cabinet
It is no to have staff, it is possible to use infrared sensor is detected, alarm opportunity can be controlled, only have staff close to when
Alarmed when being alarmed, or still having staff when air is abnormal in cabinet, personnel's sensing unit output induced signal is extremely
Main control unit.Electromagnetic lock, main control unit output drive signal to electromagnetic lock, Ke Yiyou are provided between the cabinet door and doorframe of switch cubicle
When main control unit obtains gas content exception in cabinet, locking cabinet door, it is to avoid staff, which opens by mistake, to open.
As shown in Figure 7,8, RS485 communication units are used to realize and communicated with the original control system of switch cubicle, transmission control
Signal processed and obtain the information such as whether switch cabinet electrified powered.RS485 communication units are by isolated from power unit and communication unit group
Into system power supply, for realizing system power supply and communications portion isolated from power, is reduced in U7 and U8 composition isolated from power part in figure
Communications portion is disturbed.U10 is the RS485 communication chips ADM2486 of the function containing signal isolation in figure.Chip the 4th, 5 pins with
The pin of controller the 57th is connected, for realizing reception/sending direction switching；The pin of chip the 3rd is connected with the pin of controller the 59th,
For realizing data receiver；The pin of chip the 6th is connected with the pin of controller the 58th, for realizing that data are sent；R23, R28 in figure
For RS485 buses pull-up and pull down resistor, R22 and R26 are terminal coupling resistance, for realizing data long-distance transmissions；DZ1、
DZ2 and DZ3 is TVS diode, for signal circuit lightning protection and signal surge protection；JP2 be RS485 EBIs, for
External bus is connected.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the utility model is implemented not by above-mentioned
The limitation of mode, if the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or not
It is improved by the present invention design and technical scheme directly apply to other occasions, protection domain of the present utility model it
It is interior.
Claims (4)
1. air monitering warning system in switch cabinet, it is characterised in that：Gas detection cell, the gas are provided with switch cubicle
Detection unit exports induced signal to main control unit, the air exhaust units of the main control unit output drive signal to the switch cubicle,
Main control unit output alarm signal is to warning device, and the warning device is fixed on switch cubicle and/or in Control Room, the gas
Body detection unit gathers pernicious gas signal by MWA4218-0901 sensors.
2. air monitering warning system in switch cabinet according to claim 1, it is characterised in that：The cabinet of the switch cubicle
Electromagnetic lock, the main control unit output drive signal to electromagnetic lock are provided between door and doorframe.
3. air monitering warning system in switch cabinet according to claim 2, it is characterised in that：The cabinet of the switch cubicle
States of cabinet door detection unit, the states of cabinet door detection unit output counter door opening and closing state signal to master are provided between door and doorframe
Control unit.
4. air monitering warning system in the switch cabinet according to claim 1,2 or 3, it is characterised in that：The switch
Cabinet is externally provided with personnel's sensing unit, and personnel's sensing unit exports induced signal to main control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720149342.9U CN206531831U (en) | 2017-02-20 | 2017-02-20 | Air monitering warning system in switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720149342.9U CN206531831U (en) | 2017-02-20 | 2017-02-20 | Air monitering warning system in switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206531831U true CN206531831U (en) | 2017-09-29 |
Family
ID=59916585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720149342.9U Active CN206531831U (en) | 2017-02-20 | 2017-02-20 | Air monitering warning system in switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206531831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111754734A (en) * | 2020-05-22 | 2020-10-09 | 金鑫 | Intelligent alarm device for electric switch |
-
2017
- 2017-02-20 CN CN201720149342.9U patent/CN206531831U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111754734A (en) * | 2020-05-22 | 2020-10-09 | 金鑫 | Intelligent alarm device for electric switch |
| CN111754734B (en) * | 2020-05-22 | 2022-05-31 | 金鑫 | Intelligent alarm device for electric switch |
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