CN201569303U - Safety interlock controller of industrial furnace gas valve - Google Patents
Safety interlock controller of industrial furnace gas valve Download PDFInfo
- Publication number
- CN201569303U CN201569303U CN2009203135490U CN200920313549U CN201569303U CN 201569303 U CN201569303 U CN 201569303U CN 2009203135490 U CN2009203135490 U CN 2009203135490U CN 200920313549 U CN200920313549 U CN 200920313549U CN 201569303 U CN201569303 U CN 201569303U
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- stop valve
- central logic
- logic control
- interface unit
- gas
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Abstract
The utility model relates to a safety interlock controller of an industrial furnace gas valve, which comprises a field device signal interface unit, a field man-machine interface unit, a central logic control unit and a bus network communication unit; the field device signal interface unit is used for connecting open-position feedback with off-position feedback of a gas isolating valve and a nitrogen gas isolating valve, converting the feedbacks into digital signals and then inputting the signals to the central logic control unit, and control signals of the central logic control unit are converted into voltage drive signals at the same time, so that gas circuit solenoid valves of the gas isolating valve and the nitrogen gas isolating valve are driven directly; the field man-machine interface unit can control the gas isolating valve and the nitrogen gas isolating valve independently on site through the central logic control unit; and the bus network communication unit is communicated with a PLC (Programmable Logic Controller) control system, transmits local state signals to the PLC system through a bus, and receives control commands transmitted by the PLC system through the bus. Through the controller, maintenance staffs can control the field directly.
Description
Technical field
The utility model relates to a kind of industrial furnace gas valve safety interlocking controller, is adapted to the chain control of industrial furnace gas cutting, belongs to the control technology field of detecting.
Background technology
Industrial heating furnace has several burning zones, and each burning zone is responsible for all to be provided with gas stop valve and to purge and is used the nitrogen stop valve.Each start that section is responsible for gas stop valve or when unusual during the section of closing person in charge stop valve, gas stop valve and purging with carrying out chain control between the nitrogen stop valve.Present solution is that the valve position signal of gas stop valve and nitrogen stop valve and control signal are all tapped into the PLC system, carries out logic control by the program among the PLC, monitors in operator station and controls.Therefore, the attendant can not the chain control of visual supervisory control be in any state at the scene, can not dynamically adjust chain control logic, can not carry out manual operation to coal gas and nitrogen stop valve at the scene, is unfavorable for the timely discovery and the fast processing of problem.From engineering viewpoint, this scheme is because PLC is all advanced at all signals and control point in addition, and the use amount of cable is bigger.
The utility model content
Technical problem to be solved in the utility model provides a kind of attendant chain control of visual supervisory control and a kind of industrial furnace gas valve safety interlocking controller of dynamically adjusting at the scene.
For solving the problems of the technologies described above, the utility model comprises field apparatus signal interface unit, on-the-spot man-machine interface unit, central logic control module, bus network communication unit, described field apparatus signal interface unit is input to the central logic control module after being used to connect opening position and off-position feedback and being converted into data signal of gas stop valve and nitrogen stop valve, control signal with the central logic control module is converted to voltage drive signals simultaneously, directly drives the electromagnetic valve of gas circuit of gas stop valve and nitrogen stop valve; Described on-the-spot man-machine interface unit can be realized the on-the-spot of gas stop valve and nitrogen stop valve controlled separately by the central logic control module; Described bus network communication unit is responsible for the communication with the PLC control system, gives the PLC system with the status signal of this locality by bus transfer, is responsible for receiving the control command of PLC system by bus transfer simultaneously, transfers to the central logic control module and handles.
In the such scheme, described central logic control module is with among the integrated EPROM that is solidificated on the single-chip microcomputer of control logic.
In the such scheme, described controller is arranged on gas stop valve and nitrogen stop valve next door.
The utlity model has following beneficial effect: the attendant can observe present chain executing state very clearly, can directly control at the scene, and fault handling time is shortened greatly; Adopt bussing technique simultaneously, significantly reduced the use amount of cable, saved engineering cost.
Description of drawings
Below in conjunction with the drawings and specific embodiments the technical solution of the utility model is further described in detail.
Fig. 1 is a structure connection diagram of the present utility model.
The specific embodiment
As shown in the figure, the utility model is made up of following 4 parts, field apparatus signal interface unit, on-the-spot man-machine interface unit, central logic control module, bus network communication unit.
What the field apparatus signal interface unit was responsible for connecting gas cutting valve and nitrogen cutting-off valve opens position and off-position feedback, send into the central logic control module after being converted into data signal, control signal with the central logic control module is converted to voltage drive signals simultaneously, directly drives the electromagnetic valve of gas circuit of gas stop valve and nitrogen stop valve.
On-the-spot man-machine interface unit is provided with button by one group, and a LCD panel and one group of status indicator lamp are formed.By button and LCD panel are set, can and revise the logic control program that is solidificated in the central logic control module to visit, also can change the control model of stop valve, realize on-the-spot control separately gas stop valve and nitrogen stop valve by button is set.Status indicator lamp comprises the location status indicator lamp of each stop valve, malfunction indicator lamp, mode state indicator lamp.These indicator lamps are directly driven by the central logic control module.
The bus network communication unit is responsible for the communication with the PLC control system.Give the PLC system with the status signal of this locality by bus transfer, be responsible for receiving the control command of PLC system simultaneously, transfer to the central logic control module and handle by bus transfer.PLC also can make amendment to the parameter in the central logic control element by bus simultaneously.
The central logic control module adopts the single-chip microcomputer of current trend, in the integrated EPROM that is solidificated on the single-chip microcomputer of control logic, the central logic control module is responsible for receiving the control command that transmits from the network communication unit, by logical operation, control field apparatus signal interface unit is controlled field apparatus.Also can receive simultaneously the order of on-the-spot man-machine interface unit, the control field apparatus.
It should be noted last that, the above specific embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (3)
1. industrial furnace gas valve safety interlocking controller, it is characterized in that, described controller comprises field apparatus signal interface unit, on-the-spot man-machine interface unit, central logic control module, bus network communication unit, described field apparatus signal interface unit is input to the central logic control module after being used to connect opening position and off-position feedback and being converted into data signal of gas stop valve and nitrogen stop valve, control signal with the central logic control module is converted to voltage drive signals simultaneously, directly drives the electromagnetic valve of gas circuit of gas stop valve and nitrogen stop valve; Described on-the-spot man-machine interface unit can be realized the on-the-spot of gas stop valve and nitrogen stop valve controlled separately by the central logic control module; Described bus network communication unit is responsible for the communication with the PLC control system, gives the PLC system with the status signal of this locality by bus transfer, is responsible for receiving the control command of PLC system by bus transfer simultaneously, transfers to the central logic control module and handles.
2. industrial furnace gas valve safety interlocking controller according to claim 1 is characterized in that, described central logic control module is with among the integrated EPROM that is solidificated on the single-chip microcomputer of control logic.
3. industrial furnace gas valve safety interlocking controller according to claim 1 and 2 is characterized in that, described controller is arranged on gas stop valve and nitrogen stop valve next door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203135490U CN201569303U (en) | 2009-10-29 | 2009-10-29 | Safety interlock controller of industrial furnace gas valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203135490U CN201569303U (en) | 2009-10-29 | 2009-10-29 | Safety interlock controller of industrial furnace gas valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201569303U true CN201569303U (en) | 2010-09-01 |
Family
ID=42661593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203135490U Expired - Fee Related CN201569303U (en) | 2009-10-29 | 2009-10-29 | Safety interlock controller of industrial furnace gas valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201569303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2531134A (en) * | 2014-09-12 | 2016-04-13 | Fisher Rosemount Systems Inc | Methods and apparatus to communicatively couple on/off valves to controllers in a process control system |
| CN111884896A (en) * | 2020-07-15 | 2020-11-03 | 杜杰 | Digital safety chain system based on communication bus and monitoring method thereof |
-
2009
- 2009-10-29 CN CN2009203135490U patent/CN201569303U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2531134A (en) * | 2014-09-12 | 2016-04-13 | Fisher Rosemount Systems Inc | Methods and apparatus to communicatively couple on/off valves to controllers in a process control system |
| US10725442B2 (en) | 2014-09-12 | 2020-07-28 | Fisher-Rosemount Systems, Inc. | Methods and apparatus to communicatively couple on/off valves to controllers in a process control system |
| GB2531134B (en) * | 2014-09-12 | 2021-03-10 | Fisher Rosemount Systems Inc | Methods and apparatus to communicatively couple on/off valves to controllers in a process control system |
| CN111884896A (en) * | 2020-07-15 | 2020-11-03 | 杜杰 | Digital safety chain system based on communication bus and monitoring method thereof |
| CN111884896B (en) * | 2020-07-15 | 2022-03-29 | 杜杰 | Digital safety chain system based on communication bus and monitoring method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuhan Corfu moral Automation Co., Ltd Assignor: Wuhan Iron & Steel (Group) Corp. Contract record no.: 2011420000134 Denomination of utility model: Safety interlock controller of industrial furnace gas valve Granted publication date: 20100901 License type: Exclusive License Record date: 20110621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20161029 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |