CN204334537U - New type explosion proof switching variable isolation circuit - Google Patents
New type explosion proof switching variable isolation circuit Download PDFInfo
- Publication number
- CN204334537U CN204334537U CN201420864270.2U CN201420864270U CN204334537U CN 204334537 U CN204334537 U CN 204334537U CN 201420864270 U CN201420864270 U CN 201420864270U CN 204334537 U CN204334537 U CN 204334537U
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- Prior art keywords
- pin
- intrinsic safety
- disconnecting relay
- electric source
- relay
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Abstract
The utility model is applicable to flame-proof switch isolation technology field.The utility model discloses a kind of new type explosion proof switching variable isolation circuit, comprise the disconnecting relay be arranged between intrinsic safety electric source input and output on-off model, this disconnecting relay the 6th is connected with non-intrinsic safety switching value level with the 7th pin, disconnecting relay the 2nd pin is connected with intrinsic safety electric source output switching value level with the 3rd pin, is provided with two diodes in parallel between disconnecting relay the 6th pin and the 7th pin.During work, intrinsic safety electric source output voltage is received disconnecting relay the 2nd pin and is made the 3rd pin produce a switch level, in disconnecting relay the 2nd pin access high level or low level, can realize input/output terminal low and high level reversal of effect.Owing to adopting relay to isolate as between the switching value level exported transducer and intrinsic safety electric source, both make circuit structure simple, played buffer action again, reduced production cost.
Description
Technical field
The utility model relates to antiknock device control technology field, particularly a kind of switching variable isolation circuit being exclusively used in antiknock device.
Background technology
At dangerous place with a potential explosion, easily there is explosion safety accident, vehicles such as needing movement, transport, stacking is necessarily required the explosion caused factor of possibility and place to be isolated in operation process, prevents explosion caused.
Existing explosion-proof vehicle mainly designs from the electric component easily producing the phenomenons such as electric spark, wherein switch amount isolation module circuit is that integrated explosion proof system designs a part, due to the switch level signal that transducer adopts, need to isolate between switch level signal and intrinsic safety electric source, but current switching value isolation module circuit more complicated, cost is higher.
Summary of the invention
The technical problem that the utility model mainly solves is to provide a kind of new type explosion proof switching variable isolation circuit, and this new type explosion proof switching variable isolation circuit structure is simple, and production cost is low.
In order to solve the problems of the technologies described above, the utility model provides a kind of new type explosion proof switching variable isolation circuit, this new type explosion proof switching variable isolation circuit comprises the disconnecting relay be arranged between intrinsic safety electric source input and output on-off model, the switching value level that this disconnecting relay the 6th exports with the 7th pin and transducer is connected, and disconnecting relay the 2nd pin is connected with intrinsic safety electric source output switching value level with the 3rd pin.
Further soil is said, is provided with two diodes in parallel between described disconnecting relay the 6th pin and the 7th pin.
The utility model flame-proof switch amount buffer circuit comprises the disconnecting relay be arranged between intrinsic safety electric source input and output on-off model, this disconnecting relay the 6th is connected with non-intrinsic safety switching value level with the 7th pin, disconnecting relay the 2nd pin is connected with intrinsic safety electric source output switching value level with the 3rd pin, is provided with two diodes in parallel between disconnecting relay the 6th pin and the 7th pin.During work, intrinsic safety electric source output voltage is received disconnecting relay the 2nd pin and is made the 3rd pin produce a switch level, in disconnecting relay the 2nd pin access high level or low level, can realize input/output terminal low and high level reversal of effect.Owing to adopting relay to isolate as between the switching value level exported transducer and intrinsic safety electric source, both make circuit structure simple, played buffer action again, reduced production cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, and the accompanying drawing in describing is embodiments more of the present utility model, to those skilled in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is new type explosion proof switching variable isolation circuit embodiment electrical schematics.
Below in conjunction with embodiment, and with reference to accompanying drawing, the realization of the utility model object, functional characteristics and advantage are described further.
Embodiment
In order to make the object of utility model, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of new type explosion proof switching variable isolation circuit embodiment.
This new type explosion proof switching variable isolation circuit comprises: be arranged on the disconnecting relay between intrinsic safety electric source input and output on-off model, the 6th of this disconnecting relay is connected with non-intrinsic safety switching value level with the 7th pin, and disconnecting relay the 2nd pin is connected with intrinsic safety electric source output switching value level with the 3rd pin.
Specifically, adopt relay to isolate the constrained input on-off model of intrinsic safety electric source, the switching value level that the 6th pin and the 7th pin and the transducer of relay export is connected, and the 2nd pin of relay is connected with the output switching value level of intrinsic safety electric source with the 3rd pin; Original intrinsic safety electric source output voltage to intrinsic safety type load supplying is utilized to receive relay the 2nd pin for producing a switch level at the 3rd pin; In relay the 2nd pin access high level or low level, can realize input/output terminal low and high level reversal of effect, namely during relay the 2nd pin access high level, corresponding output is low level, and during the 2nd pin access low level, corresponding output is high level.Between relay the 6th pin and the 7th pin, two diodes in parallel are used for coil blackout afterflow use, and dual design makes requirement of explosion proof higher.
During work, intrinsic safety electric source output voltage is connected with the 2nd pin of disconnecting relay, the 3rd pin of disconnecting relay is made to produce a corresponding with it switch level, in the 2nd pin access high level or low level of disconnecting relay, input/output terminal low and high level reversal of effect can be realized, namely when the 2nd pin of intrinsic safety electric source output is positive pole, 3rd pin of relay exports positive level, and when the 2nd pin of intrinsic safety electric source output is negative pole, the 3rd pin of relay exports negative level.Owing to adopting relay to isolate as between the switching value level exported transducer and intrinsic safety electric source, both make circuit structure simple, played buffer action again, reduced production cost.
In the present embodiment, described relay types can adjust with switching value level voltage, as 12V turns 12V, just select 12V relay.
Above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or equivalent replacement is carried out to wherein portion of techniques feature, and these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (2)
1. new type explosion proof switching variable isolation circuit, it is characterized in that: comprise the disconnecting relay be arranged between intrinsic safety electric source input and output on-off model, this disconnecting relay the 6th is connected with non-intrinsic safety switching value level with the 7th pin, and this disconnecting relay the 2nd pin is connected with intrinsic safety electric source output switching value level with the 3rd pin.
2. flame-proof switch amount buffer circuit according to claim 1, is characterized in that: be provided with two diodes in parallel between described disconnecting relay the 6th pin and the 7th pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864270.2U CN204334537U (en) | 2014-12-31 | 2014-12-31 | New type explosion proof switching variable isolation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864270.2U CN204334537U (en) | 2014-12-31 | 2014-12-31 | New type explosion proof switching variable isolation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204334537U true CN204334537U (en) | 2015-05-13 |
Family
ID=53170843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420864270.2U Expired - Fee Related CN204334537U (en) | 2014-12-31 | 2014-12-31 | New type explosion proof switching variable isolation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204334537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441685A (en) * | 2016-10-11 | 2017-02-22 | 重庆航天机电设计院 | Perforation cable tension detection system and method for oil/gas wells |
-
2014
- 2014-12-31 CN CN201420864270.2U patent/CN204334537U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441685A (en) * | 2016-10-11 | 2017-02-22 | 重庆航天机电设计院 | Perforation cable tension detection system and method for oil/gas wells |
| CN106441685B (en) * | 2016-10-11 | 2019-08-23 | 重庆航天工业有限公司 | A kind of oil/gas well perforation cable tension detection system and method |
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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 |
Granted publication date: 20150513 Termination date: 20161231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |