CN109032050A - A kind of Flameproof and intrinsically safe programmable controller - Google Patents
A kind of Flameproof and intrinsically safe programmable controller Download PDFInfo
- Publication number
- CN109032050A CN109032050A CN201811211015.7A CN201811211015A CN109032050A CN 109032050 A CN109032050 A CN 109032050A CN 201811211015 A CN201811211015 A CN 201811211015A CN 109032050 A CN109032050 A CN 109032050A
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- intrinsically safe
- programmable controller
- chamber
- explosion
- circuit plate
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- 230000004888 barrier function Effects 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 5
- 238000010892 electric spark Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention relates to a kind of Flameproof and intrinsically safe programmable controllers, it includes explosion-proof chamber and intrinsic safety chamber, the programmable controller mainboard and safety barrier circuit plate being connected are provided in the explosion-proof chamber, AC power connector is additionally provided in the explosion-proof chamber, the programmable controller mainboard, which is connected with the AC power connector and passes through the AC power connector, powers；Micro-control unit is provided in the intrinsic safety chamber, the micro-control unit includes intrinsically safe circuit plate, keyboard and display, the keyboard and the display are connected on the intrinsically safe circuit plate, and the intrinsically safe circuit plate is connected by cable with the safety barrier circuit plate in explosion-proof chamber.Programmable controller mainboard in explosion-proof chamber can handle the input of flame proof signal and output, and the intrinsically safe circuit plate in intrinsic safety chamber can handle the input of intrinsic safety signal and output.Producing makes programmable controller compact, is easily installed and low-cost beneficial effect.
Description
Technical field
The present invention relates to a kind of programmable controllers, more particularly to a kind of Flameproof and intrinsically safe programmable controller.
Background technique
Natural gas monitoring is used or mineral programmable controller is for safety, will use flame-proof type programmable controller or intrinsic safety
Type programmable controller.Flame-proof type programmable controller can handle flame proof signal, and structure generally controls conventional programmable
Device is placed into Flameproof box, and disadvantage is that volume is big, with high costs.Intrinsic safety type programmable controller can handle intrinsic safety signal, knot
Structure generally adds a large amount of guard grating in Flameproof box, danger signal is processed into intrinsic safety signal, disadvantage is to need large volume
Flameproof box, many guard gratings of increase cause costs more to increase.Therefore, it is necessary to improved programmable controllers.
Summary of the invention
A kind of Flameproof and intrinsically safe programmable controller is provided the purpose of the present invention is overcoming the shortage of prior art.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
The present invention provides a kind of Flameproof and intrinsically safe programmable controller, it includes explosion-proof chamber and intrinsic safety chamber,
It is provided with the programmable controller mainboard and safety barrier circuit plate being connected in the explosion-proof chamber, is also set in the explosion-proof chamber
It is equipped with AC power connector, the programmable controller mainboard is connected with the AC power connector and passes through the alternating current
The power supply of source connector；
Micro-control unit is provided in the intrinsic safety chamber, the micro-control unit includes intrinsically safe circuit plate, keyboard and display, institute
It states keyboard and the display is connected on the intrinsically safe circuit plate, the intrinsically safe circuit plate passes through the institute in cable and explosion-proof chamber
Safety barrier circuit plate is stated to be connected.
Optimally, the micro-control unit further includes the wireless module being connected on the intrinsically safe circuit plate.
Further, the wireless module includes at least one of GPRS antenna, WiFi antenna and GPS antenna.
Optimally, the micro-control unit further includes the LED light being connected on the intrinsically safe circuit plate.
Optimally, the display is LCD display.
Optimally, Switching Power Supply is additionally provided in the explosion-proof chamber, the Switching Power Supply setting connects in the AC power source
For the High Level AC Voltage of the AC power connector to be converted to low-voltage direct between head and the programmable controller mainboard
Electricity.
Optimally, battery is additionally provided in the explosion-proof chamber, the battery is connected on the programmable controller mainboard
Power supply when for powering off.
Optimally, the cavity wall of the explosion-proof chamber is additionally provided at least one cable and introduces interface.
Further, the cable be introduced into the type of interface include in flame proof G1, flame proof G1-1/4 and flame proof G3/4 extremely
Few one kind.
Optimally, it includes cabinet, intrinsic safety case lid and flame proof case lid, and the intrinsic safety chamber and the explosion-proof chamber are arranged described
In cabinet, the intrinsic safety case lid lid is closed in the intrinsic safety chamber opening, and the flame proof case lid lid is closed in the explosion-proof chamber opening,
Offered between the intrinsic safety chamber and the explosion-proof chamber connection opening for the intrinsically safe circuit plate and the safety barrier circuit plate it
Between be connected by cable.
Due to the above technical solutions, the present invention has the following advantages over the prior art:
Flameproof and intrinsically safe programmable controller of the invention is provided in explosion-proof chamber due to being provided with explosion-proof chamber and intrinsic safety chamber
Programmable controller mainboard, safety barrier circuit plate and AC power connector；Micro-control unit, microcontroller list are provided in intrinsic safety chamber
Member includes intrinsically safe circuit plate, keyboard and display, and wherein intrinsically safe circuit plate passes through the safety barrier circuit in cable and explosion-proof chamber
Plate is connected to be connected with programmable controller mainboard indirectly；Therefore, the programmable controller mainboard in explosion-proof chamber can be with
The input of flame proof signal and output are handled, the intrinsically safe circuit plate in intrinsic safety chamber can handle the input of intrinsic safety signal and output.It produces
Make programmable controller compact, be easily installed and low-cost beneficial effect.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the front view of Flameproof and intrinsically safe programmable controller according to an embodiment of the invention；
Fig. 2 is cabinet in embodiment illustrated in fig. 1, intrinsic safety case lid and flame proof case lid stereoscopic schematic diagram；
Fig. 3 is intrinsic safety chamber and explosion-proof chamber internal part structure chart in embodiment illustrated in fig. 1；
Wherein, the reference numerals are as follows:
1, cabinet；11, intrinsic safety chamber；12, explosion-proof chamber；121, cable introduces interface；
2, intrinsic safety case lid；
3, flame proof case lid；
41, micro-control unit；411, intrinsically safe circuit plate；412, keyboard；413, display；414, wireless module；4141, antenna；
415, LED light；
51, programmable controller mainboard；52, safety barrier circuit plate；53, AC power connector；54, Switching Power Supply；55, battery.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
As shown in Figure 1 and Figure 2, the periphery component of Flameproof and intrinsically safe programmable controller includes cabinet 1,2 and of intrinsic safety case lid
Flame proof case lid 3.Cabinet 1 is generally box-like, is provided with intrinsic safety chamber 11 and explosion-proof chamber 12 namely intrinsic safety flame proof one in cabinet 1 simultaneously
Body cabinet design.Outside Dimensions (i.e. length and width) are 397*252mm.
Substantially four frame types of intrinsic safety case lid 2, centre open up opening for installation integrated keypad 412, display 413 and
The panel (can specifically see below) of LED light 415.Flame proof case lid 3 is plate-like lid body, is generated to prevent setting component in explosion-proof chamber 12
Electric spark ignites ambient enviroment.
The lid of intrinsic safety case lid 2 is closed in 11 opening of intrinsic safety chamber and fixation, and the lid of flame proof case lid 3 is closed in 12 opening of explosion-proof chamber and solid
It is fixed, connection opening is offered between intrinsic safety chamber 11 and explosion-proof chamber 12 and is seen below for intrinsically safe circuit plate 411() and safety barrier circuit plate
52(is seen below) between be connected by cable (not shown).
9 cables, which are additionally provided with, in bottom (right side is bottom in Fig. 2) cavity wall of explosion-proof chamber 12 introduces interface 121, including
Flame proof G1 cable introduces 1, interface, flame proof G1-1/4 cable introduces 1, interface and flame proof G3/4 cable introduces 9, interface.Its
In its technical solution, cable, which introduces interface 121, can also be arranged 1,2,3 or other quantity, particular number not by
Limitation, according to the actual situation depending on.
Such as Fig. 3, be provided in explosion-proof chamber 12 combined with Figure 1 and Figure 2, programmable controller mainboard 51, safety barrier circuit plate 52,
AC power connector 53, Switching Power Supply 54 and battery 55.
It is defeated that programmable controller mainboard 51 carries the analog input of 16 road flame proof types, the analog quantity of 2 road flame proof types
Out, the On-off signal output of 20 road flame proof types, the RS485 communication interface of 2 road flame proof types, 1 road flame proof type RS232
The ethernet communication interface of communication interface, the RS422 communication interface of 1 road flame proof type and 1 road flame proof type, PLC technology
Device mainboard 51 also has 256M massive store space, therefore the function of programmable controller mainboard 51 is very powerful.
Switching Power Supply 54 connects AC power connector 53, and Switching Power Supply 54 also connect programmable controller mainboard 51 to can compile
Range controller mainboard 51 is powered.High Level AC Voltage is mainly converted to low-voltage DC by the effect of Switching Power Supply 54, to reduce
Generate the probability of electric spark.
Power supply when battery 55 is connected to programmable controller mainboard 51 to power off, in the present embodiment, power-off can continue
Operation 1 week or so.
220V alternating current enters explosion-proof chamber 12 by AC power connector 53, hands over 220V high pressure using Switching Power Supply 54
Galvanic electricity is converted to 24V low-voltage DC.Safety barrier circuit plate 52 is connected on programmable controller mainboard 51 to be indirectly connected with
Switching Power Supply 54.
In other technical solutions, Switching Power Supply 54 can also be not provided with, by programmable controller mainboard 51 directly with exchange
Power connection 53 is connected and is powered by AC power connector 53, and the advantages of Switching Power Supply 54 are arranged is can to hand over high pressure
Galvanic electricity is converted to low-voltage DC, reduces the power consumption of programmable controller mainboard 51, ignites surrounding to reduce and generate electric spark
The probability of environment.
In other technical solutions, it can also be not provided with battery 55, at this moment if power-off, Flameproof and intrinsically safe PLC technology
Device can stop working, and affect production, and battery 55 is arranged can make Flameproof and intrinsically safe PLC technology under power blackout situation
Device continues for operation 1 week or so, leaves the time for malfunction elimination and reparation, is conducive to continuous production.
As shown in figure 3, be provided with micro-control unit 41 in intrinsic safety chamber 11, micro-control unit 41 namely MCU or single-chip microcontroller.It is micro-
Control unit 41 includes intrinsically safe circuit plate 411, keyboard 412, display 413, wireless module 414 and LED light 415.Key
Disk 412, display 413, wireless module 414 and LED light 415 are connected with intrinsically safe circuit plate 411 respectively.
Intrinsically safe circuit plate 411 is connected and is led to the safety barrier circuit plate 52 in explosion-proof chamber 12 by cable (not shown)
News, safety barrier circuit plate 52 protect the essential safe type signal circuit environment in intrinsic safety chamber 11.Intrinsically safe circuit plate 411 is certainly
On-off signal output with 8 tunnel essential safety types, the analog input of 4 tunnel essential safety types, 2 tunnel essential safety types
RS485 communication interface and 2 tunnel essential safety types NAMUR signal input detection.
Keyboard 412 is 20 key boards of intrinsic safety matter security type, and function is sound, the input for instruction.
Display 413 is the LCD display of intrinsic safety matter security type, and length and width 192mm*64mm is shown for information.
Wireless module 414 includes antenna 4141, is used for transmitting/receiving wireless signal.There are two the settings of antenna 4141, is selected from GPRS
Both of antenna, WiFi antenna and GPS antenna are communicated wirelessly and are positioned, and wherein GPRS antenna and WiFi antenna are mainly used
In wireless telecommunications, GPS antenna is mainly used for positioning.The signal of GPRS wireless telecommunications, WiFi wireless telecommunications and GPS positioning is
Essential safety type.Sim card slot is provided on intrinsically safe circuit plate 411, sim card slot is for planting SIM card to support wireless telecommunications.
In other technical solutions, wireless module 414 can also be selected only in GPRS antenna, WiFi antenna and GPS antenna
Any one or three.Certainly, antenna 4141 can also be integrated in intrinsically safe circuit plate 411.
LED light 415 is also essential safety type, the prompt for working condition.
Above-mentioned keyboard 412, display 413 and LED light 415 are integrated on one panel, and panel is embedded in intrinsic safety
In opening on case lid 2, to be convenient to staff's operation.
The explosive-proof grade of the Flameproof and intrinsically safe programmable controller of the present embodiment is Exd ib IIB T4Gb, protection etc.
Grade is IP65.
The Flameproof and intrinsically safe programmable controller of the present embodiment is wholely set for intrinsic safety type and flame-proof type, becomes one
Individual certified product.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention, it is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of Flameproof and intrinsically safe programmable controller, which is characterized in that it includes explosion-proof chamber (12) and intrinsic safety chamber (11),
The programmable controller mainboard (51) and safety barrier circuit plate (52) being connected are provided in the explosion-proof chamber (12), it is described
It is additionally provided in explosion-proof chamber (12) AC power connector (53), the programmable controller mainboard (51) connects with the AC power source
Head (53) is connected and is powered by the AC power connector (53)；
It is provided with micro-control unit (41) in the intrinsic safety chamber (11), the micro-control unit (41) includes intrinsically safe circuit plate
(411), keyboard (412) and display (413), the keyboard (412) and the display (413) are connected to the intrinsically safe circuit
On plate (411), the intrinsically safe circuit plate (411) is connected by cable with the safety barrier circuit plate (52) in explosion-proof chamber (12)
It connects.
2. Flameproof and intrinsically safe programmable controller according to claim 1, it is characterised in that: the micro-control unit
It (41) further include the wireless module (414) being connected on the intrinsically safe circuit plate (411).
3. Flameproof and intrinsically safe programmable controller according to claim 2, it is characterised in that: the wireless module
It (414) include at least one of GPRS antenna, WiFi antenna and GPS antenna.
4. Flameproof and intrinsically safe programmable controller according to claim 1, it is characterised in that: the micro-control unit
It (41) further include the LED light (415) being connected on the intrinsically safe circuit plate (411).
5. Flameproof and intrinsically safe programmable controller according to claim 1, it is characterised in that: the display (413)
For LCD display.
6. Flameproof and intrinsically safe programmable controller according to claim 1, it is characterised in that: in the explosion-proof chamber (12)
It is additionally provided with Switching Power Supply (54), the Switching Power Supply (54) is arranged in the AC power connector (53) and the programmable control
For the High Level AC Voltage of the AC power connector (53) to be converted to low-voltage DC between device mainboard (51) processed.
7. Flameproof and intrinsically safe programmable controller according to claim 1, it is characterised in that: in the explosion-proof chamber (12)
It is additionally provided with battery (55), the battery (55) is connected on the programmable controller mainboard (51) for confession when powering off
Electricity.
8. Flameproof and intrinsically safe programmable controller according to claim 1, it is characterised in that: the explosion-proof chamber (12)
Cavity wall is additionally provided at least one cable and introduces interface (121).
9. Flameproof and intrinsically safe programmable controller according to claim 8, it is characterised in that: the cable introduces interface
(121) type includes at least one of flame proof G1, flame proof G1-1/4 and flame proof G3/4.
10. Flameproof and intrinsically safe programmable controller according to claim 1, it is characterised in that: it include cabinet (1),
Intrinsic safety case lid (2) and flame proof case lid (3), the intrinsic safety chamber (11) and the explosion-proof chamber (12) are arranged in the cabinet (1), institute
It states intrinsic safety case lid (2) lid to close in intrinsic safety chamber (11) opening, flame proof case lid (3) lid is closed to be opened in the explosion-proof chamber (12)
Mouthful place, offered between the intrinsic safety chamber (11) and the explosion-proof chamber (12) connection be open confession the intrinsically safe circuit plate (411) and
It is connected between the safety barrier circuit plate (52) by cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811211015.7A CN109032050A (en) | 2018-10-17 | 2018-10-17 | A kind of Flameproof and intrinsically safe programmable controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811211015.7A CN109032050A (en) | 2018-10-17 | 2018-10-17 | A kind of Flameproof and intrinsically safe programmable controller |
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| Publication Number | Publication Date |
|---|---|
| CN109032050A true CN109032050A (en) | 2018-12-18 |
Family
ID=64613219
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811211015.7A Pending CN109032050A (en) | 2018-10-17 | 2018-10-17 | A kind of Flameproof and intrinsically safe programmable controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113901A (en) * | 2021-04-16 | 2021-07-13 | 安徽启电自动化科技有限公司 | Isolated safety barrier |
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2018
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