CN205809144U - A kind of operating side electric current dual pathways isolated gate - Google Patents
A kind of operating side electric current dual pathways isolated gate Download PDFInfo
- Publication number
- CN205809144U CN205809144U CN201620499137.0U CN201620499137U CN205809144U CN 205809144 U CN205809144 U CN 205809144U CN 201620499137 U CN201620499137 U CN 201620499137U CN 205809144 U CN205809144 U CN 205809144U
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- power supply
- ecp19
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- 230000009977 dual effect Effects 0.000 title claims abstract description 7
- 230000037361 pathway Effects 0.000 title claims abstract description 7
- 238000002955 isolation Methods 0.000 claims abstract description 18
- 231100001261 hazardous Toxicity 0.000 claims abstract description 17
- 239000004065 semiconductor Substances 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims description 27
- 230000005611 electricity Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal 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
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000021472 generally recognized as safe Nutrition 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a kind of operating side electric current dual pathways isolated gate, including power circuit and signal processing circuit.In power circuit, the input of 24V power supply connects ECP19 isolating transformer through linear voltage-stabilized power supply circuit and NCP1030 high-voltage switch gear voltage regulator circuit, and ECP19 isolating transformer connects two paths of signals insulating power supply output circuit and two-way 24V intrinsic safety distribution output circuit.Signal processing circuit includes that two passages, two passages include place of safety 4 20mA input circuit, operation amplifier circuit, optocoupler signal isolation circuit, isolation signals amplifying circuit, metal-oxide-semiconductor on-off circuit and the hazardous area intrinsic safety 4 20mA output circuit being linked in sequence respectively.What this utility model can make 4 20mA signal high precisions is transferred to hazardous area from place of safety, can the transmission of effective anti-stop signal because severe industrial environment is exploded, thus ensure that the safety of industry spot.
Description
Technical field
This utility model belongs to industrial control equipment, relates to guard grating, particularly relate to a kind of operating side electric current dual pathways every
From grid.
Background technology
Guard grating is to ensure that Process Control System has the Complete set of instrument of safety spark explosion-proof performance, and it is necessarily mounted at control
System indoor, as the associate device of control room instrument and device with field instrument, on the one hand it play the effect that signal transmits；Another
Aspect it be additionally operable to limit flow into hazardous area energy.The safe interface in intrinsic safety loop, it can (non-intrinsically safe be pacified in place of safety
The bi-directional signal of telecommunication entirely) and between hazardous area (essential safety), and the place of safety caused because of fault can be limited to hazardous area
Energy is passed on.Generally Recognized as safe grid have Zener type and isolated, are widely used in the occasions such as petroleum and petrochemical industry automatization generating.
Guard grating mainly has Zener type guard grating and the big class of isolating safety grid two.The core parts of Zener type guard grating are
Zener diode, current-limiting resistance and rapid fuse.The function of the most limited energy of isolating safety grid, also isolation features, it
Mainly by loop limit energy unit, signal and isolated from power unit, signal processing unit composition.The major function of guard grating is current limliting
Pressure limiting, it is ensured that the available energy of field instrument is in safety range.
Currently for the 4-20mA input signal of place of safety and the isolation of the 4-20mA output signal in hazardous area, also do not have
Suitably solution.
Utility model content
The purpose of this utility model is to provide a kind of operating side electric current dual pathways isolated gate, by the electric current from place of safety
Signal is converted to 4mA-20mA current signal exports hazardous area through isolation, can control the electropneumatic transducer in hazardous area, valve fixed
The field apparatus such as position device.This product needed is independently-powered, power supply, input, export three ends isolation.
For reaching above-mentioned purpose, embodiment of the present utility model adopts the following technical scheme that
A kind of operating side electric current dual pathways isolated gate, including power circuit and signal processing circuit；
Power circuit includes that linear voltage-stabilized power supply circuit, NCP1030 high-voltage switch gear voltage regulator circuit, ECP19 isolate transformation
Device, first via signal insulating power supply output circuit, the second road signal insulating power supply output circuit, first via 24V intrinsic safety distribution are defeated
Go out circuit and the second road 24V intrinsic safety distribution output circuit；24V power supply inputs through linear voltage-stabilized power supply circuit and NCP1030
High-voltage switch gear voltage regulator circuit connects the 1-2 winding of ECP19 isolating transformer, and the 5-6 winding of ECP19 isolating transformer connects the
One road signal insulating power supply output circuit, the 7-8 winding of ECP19 isolating transformer connects the second road signal insulating power supply output electricity
Road, first via signal insulating power supply output circuit and the second road signal insulating power supply output circuit are respectively two-way 4-20mA circuit
Power supply, the 11-12 winding of ECP19 isolating transformer connects first via 24V intrinsic safety distribution output circuit, ECP19 isolating transformer
9-10 winding connect the second road 24V intrinsic safety distribution output circuit；
Signal processing circuit includes that first passage and second channel, first passage and second channel include being linked in sequence respectively
Place of safety 4-20mA input circuit, operation amplifier circuit, optocoupler signal isolation circuit, isolation signals amplifying circuit, metal-oxide-semiconductor
On-off circuit and hazardous area intrinsic safety 4-20mA output circuit.
The advantage that this utility model is implemented:
Using this utility model, 4-20mA signal high-precision can be transferred to hazardous area from place of safety, can effectively prevent
Stop signal transmission is because severe industrial environment is exploded, thus ensure that the safety of industry spot.
This utility model has passed through certification of explosion protection.Certification of explosion protection is as follows:
Country's explosion-proof electrification quality inspection supervision center (CQST)
Explosion-proof mark: [Ex ia Ga] IIC
Parameters for authentication: (between 9,10 terminals) (between 11,12 terminals)
Um=250V AC/DC Uo=27.5V
Io=93mA Po=640mW
IIC:Co=0.05uF Lo=2.4mH
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, will make required in embodiment below
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only embodiments more of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Other accompanying drawing.
Fig. 1 is shell front view of the present utility model.
Fig. 2 is shell top view of the present utility model.
Fig. 3 is wiring diagram of the present utility model.
Fig. 4 is power circuit principle figure of the present utility model.
Fig. 5 is signal processing circuit schematic diagram of the present utility model.
Fig. 6 is transformator general assembly drawing of the present utility model.
Fig. 7 is Transformer Winding figure of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
Figures 1 and 2 show that shell of the present utility model.The position of shell bottom left section can make this utility model be articulated in
On slide rail.Wiring part of the present utility model has power supply input, power supply output, signal input and output line.
Fig. 3 shows the wiring diagram that this utility model is detailed.As it is shown on figure 3, this utility model have terminal 3,4,5,6,
7、8、9、10、11、12.Wherein, terminal 3 and terminal 4 are 24V power input port, and terminal 5 and terminal 6 are first via danger letters
Number input, terminal 9 and terminal 10 are the signal output ports that the first via is corresponding, and terminal 7 and terminal 8 are the second tunnel danger signal
Input port, terminal 11 and terminal 12 are the signal output ports that the second tunnel is corresponding.
Technical parameter of the present utility model is as follows:
Supply voltage: 18-35V DC
Port number: two-way inputs, two-way exports
Input: (0) 4-20mA electric current
Output: (0) 4-20mA, (0) 1-5V
Load capacity: 750 Ω
Transmission precision: 0.1%
Response time: 0.2S
Temperature drift: 0.05%F.S/10 DEG C
Insulation resistance: 100M Ω
Dielectric strength: 2500V AC/1min
Electro Magnetic Compatibility: meet GBT18268
Region residing for installation equipment: be arranged on harbor, can with there is II A, II B, II C hazardous gas T4-T6 temperature
0th district of degree group, 1st district, 2 hazardous area, district intrinsically-safe instruments are connected.
Operating temperature :-20 DEG C-60 DEG C
Circuit part of the present utility model mainly includes power circuit and signal processing circuit, illustrates individually below:
Fig. 4 shows power circuit of the present utility model.As shown in Figure 4, including linear voltage-stabilized power supply circuit 101,
NCP1030 high-voltage switch gear voltage regulator circuit 102, ECP19 isolating transformer 103, first via signal insulating power supply output circuit
104, the second road signal insulating power supply output circuit 105, first via 24V intrinsic safety distribution output circuit 106 and the second road 24V are originally
Peace distribution output circuit 107.The input of 24V power supply is high through the linear voltage-stabilized power supply circuit 101 and NCP1030 of discrete device composition
The voltage regulator circuit 102 that compresses switch connects the 1-2 winding of ECP19 isolating transformer 103, the 5-6 of ECP19 isolating transformer 103 around
Group connects first via signal insulating power supply output circuit 104, and the 7-8 winding of ECP19 isolating transformer 103 connects the second road signal
Insulating power supply output circuit 105, the 11-12 winding of ECP19 isolating transformer 103 connects first via 24V intrinsic safety distribution output electricity
Road 106, the 9-10 winding of ECP19 isolating transformer 103 connects the second road 24V intrinsic safety distribution output circuit 107.
The power supply that single channel 24V power supply separates 4 tunnel independences by ECP19 isolating transformer 103 exports, ECP19 isolation in Fig. 4
The 5-6 winding of transformator 103,7-8 winding two-way are supplied to the power supply of two-way independence, supply to respectively two-way 4-20ma circuit
Electricity, 9-10 winding, this part of 11-12 winding give independent distribution output, ensure that the distribution of outside is also through isolation
Power supply, after have passed through isolation, hazardous area and place of safety power-supply system are independent mutually, and the security performance of isolation greatly carries
High.
The insulation voltage of ECP19 isolating transformer 103 is 2500V, i.e. this product input and output two ends add 2500V voltage
Also will not damage.
Fig. 5 shows signal processing circuit of the present utility model.As it is shown in figure 5, include first passage and second channel.The
One passage includes first passage place of safety 4-20mA input circuit 201a, the first passage operation amplifier circuit being linked in sequence
202a, first passage optocoupler signal isolation circuit 203a, first passage isolation signals amplifying circuit 204a, first passage metal-oxide-semiconductor
On-off circuit 205a and first passage hazardous area intrinsic safety 4-20mA output circuit 206a.Second channel includes be linked in sequence
Two passage place of safety 4-20mA input circuit 201b, second channel operation amplifier circuit 202b, second channel light coupling signal every
From circuit 203b, second channel isolation signals amplifying circuit 204b, second channel metal-oxide-semiconductor on-off circuit 205b and second channel
Hazardous area intrinsic safety 4-20mA output circuit 206.
Two-way intrinsic safety 4-20ma imput output circuit, as a example by the first via, signal passes through terminal 5-6, through circuit transmission
Arriving outfan, outfan has 6 Zener diodes and 4 intrinsic safety resistance to also have an insurance F3 the most disconnected, and in Fig. 5, one has 6
Individual failpoint, by voltage clamp.Resistance R29, R30, R31, R32 limit the ignition energy in hazardous area, and concrete parameter calculates
Meet GB3836.1-2010 and GB3836.4-2010.Two insurances are also had so that system is more safe and reliable, i.e. at input
Making device all damage because of extraneous special environment also can make danger signal must not be flowed into outfan by Zapping circuit.This circuit
Precision is high, and full accuracy can reach 0.05%, exactly because high precision is at dangerous situations such as petroleum and petrochemical industry coal cement
It is widely used.
Fig. 6 shows the general assembly drawing of the isolating transformer used in power circuit.As shown in Figure 6, isolating transformer is by two
Secondary winding 301, insulating barrier 302, magnetic core 303, skeleton 304 and a winding 305 are constituted.Secondary Winding 301 is Φ 0.2 Polyester Paint
Envelope curve；Insulating barrier 302 is mylar；Magnetic core 303 is ferrite；Skeleton 304 is polyester；Winding 305 is Φ 0.2 polyester
Enamel-covered wire.Technology requires as follows: 1, layer insulation: insulating polyester 0.1 × 2 layer, insulation voltage 2500V；2, dipping lacquer twice, dries
Dry；3, pressure insulation is done between winding and Secondary Winding one time；4, pressure 2500V, 1min, a 50Hz between winding and magnetic core；5、
Electrically air gap: 3mm, creep age distance: 3mm.Fig. 7 shows the winding figure of isolating transformer.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model does not limit to
In this, any those skilled in the art in technical scope disclosed in this utility model, the change that can readily occur in
Change or replace, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with described
Scope of the claims is as the criterion.
Claims (1)
1. an operating side electric current dual pathways isolated gate, it is characterised in that include power circuit and signal processing circuit；
Power circuit include linear voltage-stabilized power supply circuit (101), NCP1030 high-voltage switch gear voltage regulator circuit (102), ECP19 every
From transformator (103), first via signal insulating power supply output circuit (104), the second road signal insulating power supply output circuit
(105), first via 24V intrinsic safety distribution output circuit (106) and the second road 24V intrinsic safety distribution output circuit (107)；24V electricity
Source input connects ECP19 isolation through linear voltage-stabilized power supply circuit (101) and NCP1030 high-voltage switch gear voltage regulator circuit (102)
The 1-2 winding of transformator (103), the 5-6 winding of ECP19 isolating transformer (103) connects the output of first via signal insulating power supply
Circuit (104), the 7-8 winding of ECP19 isolating transformer (103) connects the second road signal insulating power supply output circuit (105), the
One road signal insulating power supply output circuit (104) and the second road signal insulating power supply output circuit (105) are respectively two-way 4-
20mA circuit is powered, and the 11-12 winding of ECP19 isolating transformer (103) connects first via 24V intrinsic safety distribution output circuit
(106), the 9-10 winding of ECP19 isolating transformer (103) connects the second road 24V intrinsic safety distribution output circuit (107)；
Signal processing circuit includes that first passage and second channel, first passage and second channel include the peace being linked in sequence respectively
Whole district's 4-20mA input circuit (201), operation amplifier circuit (202), optocoupler signal isolation circuit (203), isolation signals are put
Big circuit (204), metal-oxide-semiconductor on-off circuit (205) and hazardous area intrinsic safety 4-20mA output circuit (206).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620499137.0U CN205809144U (en) | 2016-05-27 | 2016-05-27 | A kind of operating side electric current dual pathways isolated gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620499137.0U CN205809144U (en) | 2016-05-27 | 2016-05-27 | A kind of operating side electric current dual pathways isolated gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205809144U true CN205809144U (en) | 2016-12-14 |
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ID=57502314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620499137.0U Expired - Fee Related CN205809144U (en) | 2016-05-27 | 2016-05-27 | A kind of operating side electric current dual pathways isolated gate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205809144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117394846A (en) * | 2023-12-13 | 2024-01-12 | 常州市索鼎自动化科技有限公司 | Isolation device for intrinsically safe devices |
-
2016
- 2016-05-27 CN CN201620499137.0U patent/CN205809144U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117394846A (en) * | 2023-12-13 | 2024-01-12 | 常州市索鼎自动化科技有限公司 | Isolation device for intrinsically safe devices |
| CN117394846B (en) * | 2023-12-13 | 2024-02-27 | 常州市索鼎自动化科技有限公司 | Isolation device for intrinsically safe devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20180527 |