CN207083338U - A kind of intelligent positive-pressure explosion-proof switch board - Google Patents
A kind of intelligent positive-pressure explosion-proof switch board Download PDFInfo
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- CN207083338U CN207083338U CN201720806252.2U CN201720806252U CN207083338U CN 207083338 U CN207083338 U CN 207083338U CN 201720806252 U CN201720806252 U CN 201720806252U CN 207083338 U CN207083338 U CN 207083338U
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Abstract
The utility model discloses a kind of intelligent positive-pressure explosion-proof switch board, by the way that switch board is divided into malleation distribution board chamber, intelligent controller, malleation purges gas circuit component and compressed air gas source, and connected by purging round, so that switch board body forms a hemi-closure space being sequentially communicated, compressed air provides source of the gas for switch board, the air of place of safety is through gas source switch, safety air is blown into by malleation blow device by malleation chamber successively, and discharged eventually through gas exhausting valve, air pressure in switch board is set to be higher than external pressure, form the safe subenvironment of pressure-fired, flammability hazards gas is prevented to enter, ensure the safe operation of electric elements.
Description
Technical field
It the utility model is related to a kind of explosion proof control case, more particularly to a kind of intelligent positive-pressure explosion-proof switch board.
Background technology
With the development of national economy, positive pressure control cabinet is in chemical industry, weaving, medicine, food processing, sea transport, industrial and mineral
Using more and more extensive in the combustible and explosive area of the industries such as environment, and keep the safety in production, exactly modernization industry of carrying out production strictly in line with rules and regulations is given birth to
Indispensable part in production.The explosion-proof principle of positive pressure control cabinet is mainly the explosion precaution using protective gas isolation ignition source
And positive pressure protection is formed so as to reach the explosion-proof purpose of electrical equipment.But traditional positive voltage type anti-explosion electric-controlled cabinet, gas circuit control
System bulk is larger, needs the annexes such as supporting capsule pressure gauge, differential pressure gauge more, installation restrictive condition is more, and information exchange is not straight
See, the problems such as inspection operation complexity；The core positive pressure controller of malleation cabinet, the air-channel system and power supply for controlling malleation cabinet are
System is, it is necessary to which the skilled operation of field worker and the communication with factory host computer, the measure taken at this stage are：Button control is opened
Stop, indicating lamp display mode, make operating process board and instruct operation；Traditional relay-contactor is controlled, is changed to PLC controls
System, touch-screen or text screen are shown.There are the following problems for these conventional measures：1）Button, indicating lamp structure space-consuming are big,
Operating procedure is more, there is provided is made troubles to debugging and control operation, it is impossible to communicated.2）PLC, display screen structure, bring member
The problems such as device cost increase.Up to the present, over-pressure control problem not yet obtains relatively satisfactory solution.
Utility model content
The purpose of this utility model is to provide a kind of intelligent positive-pressure explosion-proof switch board, and it is electric can to lift positive voltage type anti-explosion
Security, reliability, the scalability of switch board；Make data, information exchange more direct, and can inside malleation cabinet some
Information is more easily supplied to live centralized control center.
The utility model uses following technical proposals：
A kind of intelligent positive-pressure explosion-proof switch board, includes intelligent explosion-proof positive pressure controller, malleation cabinet cabinet and malleation
Air-channel system, described intelligent explosion-proof positive pressure controller include pcb board and the positive pressure controller being arranged on pcb board；It is described
Positive pressure controller include be used for detect malleation intracavitary pressure signal single-chip microcomputer, relay module, gate circuit, microswitch
Power supply, capacitance-resistance module, pressure sensor module, the output end of described pressure sensor module are defeated with single-chip microcomputer by gate circuit
Enter end connection, the output end of single-chip microcomputer is connected by relay module with malleation gas circuit system electric control, microswitch power supply it is defeated
Go out end to be powered by capacitance-resistance module and the positive pressure controller on pcb board；
The threaded stop valve, unidirectional that the malleation air-channel system includes gas circuit body and is successively set on gas circuit body
Choke valve, pressure-reducing valve and ball valve malleation, also include aeration valve, the exhaust solenoid valve being arranged on steam vent and be arranged on exhaust
Spark arrester outside magnetic valve, the gas circuit UNICOM in parallel with gas circuit both ends where one-way throttle valve where described aeration valve；It is described
Threaded stop valve, one-way throttle valve, pressure-reducing valve, ball valve malleation, the control signal of aeration valve and air bleeding valve respectively with monolithic
The control output end of machine is connected.
Be additionally provided with explosion-proof audible-visual annunciator on switch board body, the input of explosion-proof audible-visual annunciator and single-chip microcomputer it is defeated
Go out end connection.
Safety interlock protector is provided with described malleation purging control chamber, the device is for coil voltage
AC220V A.C. contactor, positive pressure controller obtains dead electricity by control coil, to complete the connecting and disconnecting of general supply.
Malleation chamber side is provided with the positive-pressure explosion-proof box for placing intelligent controller, is provided with positive-pressure explosion-proof box explosion-proof
Windowpane 11.
Anti-fall bolt is also set up on described switch board body, for preventing bolt from losing while fixed fasten.
Vertical seal adhesive tape is fixedly installed in described cabinet door body.
The utility model by by switch board be divided into malleation distribution board chamber, intelligent controller, malleation purge gas circuit component and
Compressed air gas source, and connected by purging round, so that switch board body forms a hemi-closure space being sequentially communicated,
Compressed air provides source of the gas for switch board, the air of place of safety through gas source switch, by malleation blow device by safety air according to
It is secondary to be blown into malleation chamber and discharged eventually through gas exhausting valve, air pressure in switch board is higher than external pressure, form pressure-fired
Safe subenvironment, prevent flammability hazards gas from entering, ensure the safe operation of electric elements.The malleation of multi-sealed protection
Chamber, sealing property is reliable, dwell time length, can effectively save operating cost, meanwhile, the positive pressure controller of its side is effectively real
Now to the regulation of malleation chamber air pressure, the utilization ratio of source of the gas is improved.Safety interlocking is set to protect in malleation purging control chamber
Protection unit, only reach as defined in after time of exchanging gas, can automatic power transmission, and can effectively realize high and low pressure automatic acousto-optic report
Alert, low pressure limit, enabling automatically power off, the security interlocking protection such as emergency manual power-off.The utility model is simple and practical, safely may be used
Leaning on, good cooling effect, degree of protection is high, can be efficiently applied to the use of the industry spots such as explosive gas atmosphere danger zone, and
And the demand of intelligent operation, trouble free service.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the utility model malleation gas circuit structure schematic diagram；
Fig. 3 is left view of the present utility model.
Embodiment
As shown in Fig. 1,2 and Fig. 3, a kind of intelligent positive-pressure explosion-proof switch board, include intelligent explosion-proof positive pressure controller
3rd, malleation cabinet cabinet 1 and malleation air-channel system 4, described intelligent explosion-proof positive pressure controller include pcb board and are arranged on pcb board
On positive pressure controller；Described positive pressure controller includes being used to detect single-chip microcomputer, the relay of the pressure signal of malleation intracavitary
Module, gate circuit, microswitch power supply, capacitance-resistance module, pressure sensor module, the output end of described pressure sensor module
It is connected by gate circuit with single-chip microcomputer input, the output end of single-chip microcomputer is connected by relay module and malleation gas circuit system electric control
Connect, the output end of microswitch power supply is powered by capacitance-resistance module and the positive pressure controller on pcb board；The utility model will
Over-pressure control program writes single-chip microcomputer in the form of C language, and control program is simple automatically controlled program, is known technology, so
Not in the inventive point of the present invention.
The Anti-explosion electric control cabinet for being Ex d IIC T6 for PCB design explosive-proof grade, material uses stainless
Steel.Malleation cabinet cabinet uses quality carbon steel or stainless steel materials bending welding fabrication.Described positive pressure controller passes through controller
Support 9 is fixedly mounted on the side of malleation cabinet cabinet, and is additionally provided with reinforcement 10 on controller support 9 and makes positive pressure controller
Installation is more firm.
Threaded stop valve 16, the list that the malleation air-channel system includes gas circuit body and is successively set on gas circuit body
To choke valve 15, pressure-reducing valve 14 and ball valve 17, also include aeration valve 13, the exhaust solenoid valve being arranged on steam vent 12 and set
The spark arrester 11 outside exhaust solenoid valve 12 is put, gas circuit and the place gas circuit two of one-way throttle valve 15 where described aeration valve 13
Hold UNICOM in parallel；Described threaded stop valve 16, one-way throttle valve 15, pressure-reducing valve 14, ball valve 17, aeration valve 13 and exhaust electricity
The control signal of magnet valve 12 is connected with the control output end of single-chip microcomputer respectively.
It is additionally provided with explosion-proof audible-visual annunciator 2 on switch board body, the input of explosion-proof audible-visual annunciator 2 and single-chip microcomputer
Output end connects.
Safety interlock protector is provided with the malleation purging control chamber, the device is that coil voltage is AC220V
A.C. contactor, positive pressure controller obtains dead electricity by control coil, to complete the connecting and disconnecting of general supply.
Malleation chamber side is provided with the positive-pressure explosion-proof box 6 for placing intelligent controller, is provided with positive-pressure explosion-proof box anti-
Quick-fried windowpane.Anti-fall bolt 11 is also set up on described switch board body, for preventing bolt from losing while fixed fasten.Institute
Vertical seal adhesive tape 12 is fixedly installed in the cabinet door body stated, is made explosive-proof sealed tighter.
The utility model is by the pressure signal that pressure sensor module is that pressure sensor detects malleation intracavitary, by anti-
Quick-fried cable connector enters over-pressure control box, shown through internal circuit logical operation on pcb board indicator lamp tonifying Qi, exhaust, alarm,
Power transmission state, corresponding electromagnetism valve events are controlled by relay module, positive pressure operation is completed start and stop by pcb board button and grasped
Make, parameter setting, while corresponding TipWizard and parameter setting interface are shown by implosion guard window.
In malleation air-channel system, stop valve 16 is first shut off, ball valve 17 is opened and connects compressed air gas source, through pressure-reducing valve 14
Adjust to 0.5MPa pressure, open stop valve 16 afterwards, ventilated by the control of one-way throttle valve 15 into the cabinet of malleation chamber
Amount, it is that gas is stable in typical pressure range in cabinet, is discharged by spark arrester 11 outside cabinet, complete gas circuit circulation；When pressure in cabinet
During reduction, tonifying Qi magnetic valve 13 is opened, and increases throughput, increases pressure in cabinet；When pressure rise in cabinet, exhaust electromagnetism is opened
Valve 12, increase capacity, reduce pressure in cabinet.
Malleation cabinet is provided with anti-fall bolt 7, when opening cabinet door maintenance, debugging, prevents fastening bolt from losing, and anti-fall
Bolt has special key, and fastening, dismounting are all more convenient, do not use special extracting tool；It is vertical on malleation cabinet
Sealing strip 8 is vertical stratification, and small with cabinet door contact surface, pressure is big, good sealing effect；Traditional flat seal bar fastening time
It is long, easily sticked together with cabinet door, the situation for the cabinet door that occurs not opening, this vertical seal bar avoids such a phenomenon.
The utility model is simple and practical, and securely and reliably, good cooling effect, degree of protection can be efficiently applied to up to IP65
The industry spots such as explosive gas atmosphere danger zone use, and meet control intelligence, delicate structure, the need of trouble free service
Ask.
Intelligent explosion-proof positive pressure control cabinet first passes through air compressor or industry spot gas station is passed through pressure before power transmission
For 0.5-0.8MPa drying, clean compressed air.Positive pressure controller is existing to be sent a little, treats that positive pressure controller is detected in malleation cabinet
When portion's pressure reaches 150-400Pa steady pressure, it is allowed to which contactor adhesive in malleation cabinet, malleation chamber power transmission are completed.Work as pressure
Power is less than 150Pa, and tonifying Qi magnetic valve is opened, and tonifying Qi is carried out to malleation cabinet；When pressure is less than 70Pa, positive pressure controller is to malleation chamber
Contactor sends disconnected voltage signal, the power-off of malleation chamber, to industrial field control existing for hazardous gas, plays low-voltage power-off protection
Effect.Pressure and relative alarm cue in liquid crystal display full working scope display case.Product is overall according to national explosion-proof criteria
Explosion-proof Design processing is carried out, and certification is examined through explosion-proof research institute, issues certification of conformity of an instrument for explosive atmosphere.
Lift security, the reliability of positive voltage type anti-explosion electric-controlled cabinet；Pressure detecting is sensitiveer；Malleation cabinet work pressure
Power is more stable；Pressure data more intuitively feeds back to field personnel in the cabinet of intelligent positive pressure controller detection.
Operation principle：Intelligent explosion-proof positive pressure control cabinet first passes through air compressor or industry spot gas before power transmission
It is 0.5-0.8MPa drying, clean compressed air that station, which is passed through pressure,.Positive pressure controller is existing to be sent a little, treats that positive pressure controller detects
When reaching 150-400Pa steady pressure to malleation cabinet internal pressure, it is allowed to contactor adhesive in malleation cabinet, malleation chamber power transmission
Complete.
The technical solution of the utility model is not restricted in the range of embodiment described in the utility model.This practicality is new
The technology contents of the not detailed description of type are known technology.
Claims (6)
- A kind of 1. intelligent positive-pressure explosion-proof switch board, it is characterised in that：Include intelligent explosion-proof positive pressure controller, malleation cabinet cabinet Body and malleation air-channel system, described intelligent explosion-proof positive pressure controller include pcb board and the over-pressure control being arranged on pcb board Device；The single-chip microcomputer of pressure signal that described positive pressure controller includes being used for detecting malleation intracavitary, relay module, gate circuit, Microswitch power supply, capacitance-resistance module, pressure sensor module, the output end of described pressure sensor module by gate circuit with Single-chip microcomputer input is connected, and the output end of single-chip microcomputer is connected by relay module with malleation gas circuit system electric control, microswitch The output end of power supply is powered by capacitance-resistance module and the positive pressure controller on pcb board；The malleation air-channel system includes gas circuit body and the threaded stop valve, the one-way throttle that are successively set on gas circuit body Valve, pressure-reducing valve and ball valve malleation, also include aeration valve, the exhaust solenoid valve being arranged on steam vent and be arranged on exhaust electromagnetism Spark arrester outside valve, the gas circuit UNICOM in parallel with gas circuit both ends where one-way throttle valve where described aeration valve；Described spiral shell Line stop valve, one-way throttle valve, pressure-reducing valve, ball valve malleation, the control signal of aeration valve and air bleeding valve respectively with single-chip microcomputer Control output end is connected.
- 2. intelligent positive-pressure explosion-proof switch board according to claim 1, it is characterised in that：On described switch board body also Explosion-proof audible-visual annunciator is provided with, the input of explosion-proof audible-visual annunciator and the output end of single-chip microcomputer connect.
- 3. intelligent positive-pressure explosion-proof switch board according to claim 2, it is characterised in that：Described malleation purging control chamber Safety interlock protector is inside provided with, the device is the A.C. contactor that coil voltage is AC220V, and positive pressure controller passes through Control coil obtains dead electricity, to complete the connecting and disconnecting of general supply.
- 4. intelligent positive-pressure explosion-proof switch board according to claim 3, it is characterised in that：Described malleation chamber side is set There is the positive-pressure explosion-proof box for placing intelligent controller, implosion guard window is provided with positive-pressure explosion-proof box.
- 5. intelligent positive-pressure explosion-proof switch board according to claim 4, it is characterised in that：On described switch board body also Anti-fall bolt is set, for preventing bolt from losing while fixed fasten.
- 6. intelligent positive-pressure explosion-proof switch board according to claim 5, it is characterised in that：It is fixed in described cabinet door body It is provided with vertical seal adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720806252.2U CN207083338U (en) | 2017-07-05 | 2017-07-05 | A kind of intelligent positive-pressure explosion-proof switch board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720806252.2U CN207083338U (en) | 2017-07-05 | 2017-07-05 | A kind of intelligent positive-pressure explosion-proof switch board |
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| Publication Number | Publication Date |
|---|---|
| CN207083338U true CN207083338U (en) | 2018-03-09 |
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ID=61427120
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720806252.2U Active CN207083338U (en) | 2017-07-05 | 2017-07-05 | A kind of intelligent positive-pressure explosion-proof switch board |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389604A (en) * | 2018-03-29 | 2018-08-10 | 眉山麦克在线设备股份有限公司 | Positive pressure purges explosion-proof control system |
| CN109631695A (en) * | 2018-12-04 | 2019-04-16 | 湖北航天飞行器研究所 | A kind of guided missile storage and conveying box monitoring system |
| CN110888475A (en) * | 2019-12-09 | 2020-03-17 | 国网江苏省电力有限公司徐州供电分公司 | Control cabinet for intelligently regulating and controlling power operation environment |
| CN111642118A (en) * | 2020-07-02 | 2020-09-08 | 浙江全世科技有限公司 | Positive-pressure explosion-proof control cabinet and control method thereof |
| CN113447630A (en) * | 2021-06-29 | 2021-09-28 | 安徽思环科技有限公司 | Multi-parameter trace ion integrated online monitoring system |
| CN113910266A (en) * | 2021-12-16 | 2022-01-11 | 佛山华数机器人有限公司 | A explosion-proof switch board of malleation for spraying robot |
| CN114839043A (en) * | 2022-05-09 | 2022-08-02 | 南阳市一通防爆电气有限公司 | Intelligent water pressure experiment system for explosion-proof cabinet |
-
2017
- 2017-07-05 CN CN201720806252.2U patent/CN207083338U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389604A (en) * | 2018-03-29 | 2018-08-10 | 眉山麦克在线设备股份有限公司 | Positive pressure purges explosion-proof control system |
| CN109631695A (en) * | 2018-12-04 | 2019-04-16 | 湖北航天飞行器研究所 | A kind of guided missile storage and conveying box monitoring system |
| CN109631695B (en) * | 2018-12-04 | 2021-04-30 | 湖北航天飞行器研究所 | Guided missile storage and transportation box monitoring system |
| CN110888475A (en) * | 2019-12-09 | 2020-03-17 | 国网江苏省电力有限公司徐州供电分公司 | Control cabinet for intelligently regulating and controlling power operation environment |
| CN111642118A (en) * | 2020-07-02 | 2020-09-08 | 浙江全世科技有限公司 | Positive-pressure explosion-proof control cabinet and control method thereof |
| CN113447630A (en) * | 2021-06-29 | 2021-09-28 | 安徽思环科技有限公司 | Multi-parameter trace ion integrated online monitoring system |
| CN113910266A (en) * | 2021-12-16 | 2022-01-11 | 佛山华数机器人有限公司 | A explosion-proof switch board of malleation for spraying robot |
| CN114839043A (en) * | 2022-05-09 | 2022-08-02 | 南阳市一通防爆电气有限公司 | Intelligent water pressure experiment system for explosion-proof cabinet |
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