CN212819045U - Externally hung wet desulphurization control device - Google Patents
Externally hung wet desulphurization control device Download PDFInfo
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- CN212819045U CN212819045U CN202021453402.4U CN202021453402U CN212819045U CN 212819045 U CN212819045 U CN 212819045U CN 202021453402 U CN202021453402 U CN 202021453402U CN 212819045 U CN212819045 U CN 212819045U
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Abstract
The utility model discloses an outer hanging wet flue gas desulfurization controlling means, including the debugging machine, programmable controller, controller MODBUS communication fastener, EtherNet IP EtherNet communication fastener, LC communication fastener, wherein, the debugging machine is connected with programmable controller through EtherNet IP EtherNet communication fastener, programmable controller is connected to external distributed control system database through controller MODBUS communication fastener and LC communication fastener, the device can improve desulfurization control system's debugging flexibility, under the prerequisite of guaranteeing the automatic rate of delivery of limestone slurry flow control valve, effectively avoid operating personnel's invalid interference.
Description
Technical Field
The utility model belongs to thermal power generating unit wet flue gas desulfurization control field relates to an outer hanging wet flue gas desulfurization controlling means.
Background
At present, the national energy bureau puts forward higher requirements on the pollutant emission standard of thermal power generating units in China, and the control of sulfur dioxide is widely concerned by power plants in recent years as one of main sources of atmospheric pollutants. For most of the current wet desulphurization control systems of thermal power generating units, the existing control strategies mainly depend on manual control of operators, the operators control the pH value of gypsum slurry of an absorption tower within a reasonable range by adjusting a limestone slurry flow valve, and reasonably intervene in the slurry flow rate by comprehensively considering the load change of the units and the change of the sulfur dioxide in raw flue gas, so that an ideal control target is finally achieved.
From the control means of the wet desulphurization system, the manual operation mode not only causes large workload of operators, but also causes low desulphurization control efficiency. The bad operation habit of the operators can cause the flow of the limestone slurry to fluctuate in a large range, and finally the control effect of the system is influenced and the environmental protection indexes of the unit are threatened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect of above-mentioned current mode, provide an outer hanging wet flue gas desulfurization controlling means, the device can improve the flexibility of desulfurization control system debugging, under the prerequisite of guaranteeing the automatic rate of putting into operation of limestone slurry flow control valve, effectively avoids the jamming.
In order to achieve the above object, the outer hanging wet flue gas desulfurization controlling means include debugging machine, programmable controller MODBUS communication fastener, EtherNet IP EtherNet communication fastener and LC communication fastener, wherein, the debugging machine is connected with programmable controller through EtherNet IP EtherNet communication fastener, programmable controller is connected with external distributed control system database through controller MODBUS communication fastener and LC communication fastener.
The programmable controller is connected with the LC communication clamping piece through the controller MODBUS communication clamping piece and the RS485 serial communication cable;
the debugging machine is connected with the EtherNet/IP Ethernet communication card through a TCP/IP communication cable.
The model of the programmable controller is Schneider-BMEP 584040.
The model of controller MODBUS communication fastener is BMXNOM 0200.
The EtherNet/IP Ethernet communication card is BMECRA 31210.
The LC communication card is in the type of OVATION-G02.
The utility model discloses following beneficial effect has:
the utility model discloses an outer hanging wet flue gas desulfurization controlling means when concrete operation, LC communication fastener sends load, total amount of wind, raw flue gas sulfur dioxide content, clean flue gas sulfur dioxide content, lime stone thick liquid density, gypsum thick liquid PH setting value/actual value, lime stone thick liquid flow valve opening data in the distributed control system database into programmable controller through MODBUS communication fastener, programmable controller carries out real-time detection and operation to the data received, and the instruction of lime stone thick liquid flow valve is generated, when the distributed control system sends read-in instruction, programmable controller then sends the instruction of lime stone thick liquid flow valve into the distributed control system, carry out desulfurization control through the distributed control system, finally realize the automatic debugging of desulfurization control system, this regulation mode flexibility is better, simultaneously the operation of operating personnel is simplified, and the invalid interference of operators is avoided.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is LC communication fastener, 2 is MODBUS communication fastener, 3 is programmable controller, 4 is EtherNet/IP Ethernet communication fastener, 5 is the debugging machine.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, outer hanging wet flue gas desulfurization controlling means who possesses online regulatory function include LC communication fastener 1, MODBUS communication fastener 2, programmable controller 3, EtherNet/IP EtherNet communication fastener 4, debugging machine 5, wherein, debugging machine 5 is connected with programmable controller 3 through EtherNet/IP EtherNet communication fastener 4, programmable controller 3 is connected with external distributed control system database through controller MODBUS communication fastener 2 and LC communication fastener 1.
Specifically, the programmable controller 3 is connected with the LC communication card 1 through the controller MODBUS communication card 2 and the RS485 serial communication cable; the debugging machine 5 is connected with the EtherNet/IP Ethernet communication card 4 through a TCP/IP communication cable; the programmable controller 3 is of the type Schneider-BMEP 584040.
The programmable controller 3 is used as a CPU of the externally-hung wet desulphurization control device, a mainboard of the programmable controller supports that the programmable controller, the MODBUS communication card 2 and the EtherNet/IP Ethernet communication card 4 adopt the same slot plate, and the programmable controller, the MODBUS communication card 2 and the EtherNet/IP Ethernet communication card 4 jointly form the operation core of the externally-hung wet desulphurization control device.
The LC communication card 1 has the model number of OVATION-G02 and high flexibility; the model of the programmable controller 3 is Schneider-BMEP584040, the stability is high, and the operation function is strong; the model of the controller MODBUS communication card 2 is BMXNOM0200, and supports 232/485 various serial port types;
the utility model discloses a working process does:
the LC communication clamping piece 1 converts the load, the total air quantity, the original flue gas sulfur dioxide content, the net flue gas sulfur dioxide content, the limestone slurry density, the set value/actual value of the PH of the gypsum slurry and the opening data of the limestone slurry flow valve into an MODBUS communication format when the distributed control system database is in a non-dead-center state, and sends the MODBUS communication clamping piece 2 into the programmable controller 3 through an RS485 serial communication line;
the programmable controller 3 carries out real-time monitoring and operation on the received data, and finishes real-time modification of online parameters on the debugging machine 5 through the EtherNet/IP Ethernet communication card 4, and has strong operability; and then the programmable controller 3 generates a limestone slurry flow valve instruction according to the received data, when the distributed control system sends a read-in instruction, the limestone slurry flow valve instruction is sent into the LC communication clamping piece 1 through the controller MODBUS communication clamping piece 2 by an RS485 serial communication cable to complete data format conversion, and finally the instruction is sent into local equipment through the distributed control system to implement desulfurization control.
Example one
Will the utility model discloses in being applied to large-scale thermal power generating unit's in certain country wet flue gas desulfurization control system, concrete installation is:
1) selecting and installing the model of the cabinet to finish the installation and wiring work of the LC communication card 1;
2) selecting the model of a rack of the programmable controller 3, confirming the number of bits of a connecting slot, and completing the installation work of electrifying the programmable controller and installing the EtherNet/IP Ethernet communication card 4 and the controller MODBUS communication card 2 on the slot;
3) the model of a wiring port of each clamping piece is confirmed, and the installation and test work of a TCP/IP communication cable and an RS485 serial communication cable is completed;
4) the MODBUS communication card 2 is connected with the LC communication card 1 through an RS485 serial communication cable, the configuration of the LC communication card 1 is completed according to the data requirement of the communication device, and the data interaction between the plug-in device and a distributed control system database is realized;
5) the debugging machine 5 is connected with the plug-in controller through a TCP/IP communication cable, and works such as online monitoring, debugging and parameter modification are realized.
In the installation process, the externally-hung control device can be connected with a distributed control system database to further implement control.
Claims (6)
1. The utility model provides an outer hanging wet flue gas desulfurization controlling means, a serial communication, including LC communication fastener (1), controller MODBUS communication fastener (2), programmable controller (3), EtherNet/IP EtherNet communication fastener (4) and debugging machine (5), wherein, debugging machine (5) are connected with programmable controller (3) through EtherNet/IP EtherNet communication fastener (4), programmable controller (3) are connected with external distributed control system database through controller MODBUS communication fastener (2) and LC communication fastener (1).
2. An externally-hung wet desulphurization control device according to claim 1, wherein the programmable controller (3) is connected with the LC communication card (1) sequentially through the controller MODBUS communication card (2) and the RS485 serial communication cable.
3. A hanging type wet desulphurization control device according to claim 1, wherein the programmable controller (3) is of the type Schneider-BMEP 584040.
4. An externally-hung wet desulphurization control device as claimed in claim 1, wherein the model of the MODBUS communication card (2) is BMXNOM 0200.
5. An externally-hung wet desulphurization control device according to claim 1, wherein the LC communication card (1) is OVATION-G02.
6. A hanging type wet desulphurization control device according to claim 1, wherein the debugging machine (5) is connected with the EtherNet/IP EtherNet communication card (4) through a TCP/IP communication cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021453402.4U CN212819045U (en) | 2020-07-21 | 2020-07-21 | Externally hung wet desulphurization control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021453402.4U CN212819045U (en) | 2020-07-21 | 2020-07-21 | Externally hung wet desulphurization control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212819045U true CN212819045U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021453402.4U Active CN212819045U (en) | 2020-07-21 | 2020-07-21 | Externally hung wet desulphurization control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212819045U (en) |
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2020
- 2020-07-21 CN CN202021453402.4U patent/CN212819045U/en active Active
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