CN201059567Y - Control device for boiler steam blowing ash - Google Patents
Control device for boiler steam blowing ash Download PDFInfo
- Publication number
- CN201059567Y CN201059567Y CNU2007200964996U CN200720096499U CN201059567Y CN 201059567 Y CN201059567 Y CN 201059567Y CN U2007200964996 U CNU2007200964996 U CN U2007200964996U CN 200720096499 U CN200720096499 U CN 200720096499U CN 201059567 Y CN201059567 Y CN 201059567Y
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- CN
- China
- Prior art keywords
- soot blower
- switch board
- plc switch
- stock
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007664 blowing Methods 0.000 title abstract description 13
- 239000004071 soot Substances 0.000 claims abstract description 69
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 230000001012 protector Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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Abstract
The utility model discloses a steam soot blowing control device for boiler which is formed by orderly connecting a power supply cabinet, a control electrical cabinet of long-rod soot blower, a control electrical cabinet of short-rod soot blower and a PLC control cabinet. The power supply cabinet and the control electrical cabinet of long-rod soot blower are respectively in bidirectional connection with the PLC control cabinet; an output terminal of the control electrical cabinet of long-rod soot blower is connected with a long-rod soot blower, a motor of long-rod soot blower and a sealing fan of long-rod soot blower respectively, an input terminal is connected with a terminal of the PLC control cabinet; an output terminal of the control electrical cabinet of short-rod soot blower is connected with the motor of long-rod soot blower, an input terminal is connected with a terminal of the PLC control cabinet; the PLC control cabinet is in bidirectionally connected with an upper machine. The utility model has the advantages that: the utility model can realize the internetworking control to the steam soot blowing control system, inching water soot blowing control system and remote water soot blowing control system of the boiler, improves the reliability of the programme-controlled soot blowing, and improves the economy of the boiler and the safety performance of the boiler.
Description
Technical field:
The utility model belongs to a kind of steam power plant, and particularly a kind of Boiler Steam is blown grey control device.
Background technology:
Existing Siemens S5 formula PLC and low, the fault that takes place frequently of Control Component combined steam soot blower control system control system stability as the steam sootblower time failure etc., directly have influence on and blow ash and normally carry out, and then influence the economy and the safety of boiler combustion.There is the maintenance cost height in former soot blower control system, and the shortcoming that the spare parts purchasing cycle is long is German imported product as soot blower control plug-in unit, and single procurement price is 8000 yuan, and procurement cycle is 6 months.Simultaneously former control system is blown ash and can only be blown between ash for 26 meters by boiler and operate, and can't monitor at master-control room, can not promptly stop to blow the ash expansion that causes the accident when unusual service condition appears in boiler.
Summary of the invention:
The purpose of this utility model just is to overcome above-mentioned the deficiencies in the prior art, and provide a kind of Boiler Steam to blow grey control device, this device can realize that steam soot blowing, the fine motion water to boiler blows ash, long-range water soot blower control system networking control, improved and program controlly blown grey reliability, and improved the economy of boiler and the security performance of boiler.
The technical solution of the utility model is: a kind of Boiler Steam is blown grey control device, it is characterized in that: connected to form successively by power cabinet, stock soot blower control regulator cubicle, quarter butt soot blower control regulator cubicle and PLC switch board, power cabinet is carried out two-way the connection with the PLC switch board respectively with stock soot blower control regulator cubicle; The output wiring terminal of stock soot blower control regulator cubicle is connected with stock soot blower, stock soot blower motor and stock soot blower seal fan respectively, and the input wires terminal is connected with the binding post of PLC switch board; The output wiring terminal of quarter butt soot blower control regulator cubicle is connected with quarter butt soot blower motor, and input terminal is connected with the binding post of PLC switch board; Wherein, set up overcurrent protector on the line of long and short bar soot blower motor, stock soot blower seal fan and regulator cubicle output wiring terminal; Before the binding post of PLC switch board and air feed door, air feed door bypass door, hydrophobic door, all soot blower, the drain valve before thermal resistance, the drain valve pressure transmitter be connected; The PLC switch board is connected with host computer is two-way.
The input port of above-mentioned PLC switch board is connected with the USP power supply.
Keep a Siemens OP7 type guidance panel on the above-mentioned PLC switch board.
The utility model has the advantages that:
1, steam soot blowing steam supply bypass door control signal enters into the PLC switch board, and host computer can be realized the distant place of all soot blowers is controlled by communication cable and by the PLC switch board.
2, keep on the PLC switch board that a Siemens OP7 type guidance panel can be realized the program control startup of steam soot blowing, stops steam sootblower and steam supply door, the manual operation of steam supply bypass door, hydrophobic door, warning message shows, alarm signal resets etc.
3, increased overcurrent protector, whether the walking of electric current variation reflection soot blower exists mechanical bite in the time of can walking by the monitoring soot blower, helps the periodic maintenance work of soot blower mechanical part, and the motor to soot blower plays a protective role simultaneously;
4, can promptly stop steam soot blowing, water at master-control room and blow the ash operation, have an accident to the harm of equipment thereby reduce, and in unit operation, can adjust influence when blowing ash pulverized coal preparation system being switched in good time, and then improved the program control coking problem of blowing grey reliability and then having solved boiler, improved the economy of boiler and the security performance of boiler.
5, can save 300,000 yuan of maintenance funds every year.
Description of drawings:
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is the power loop figure of long and short bar soot blower motor.
Fig. 3 is the power loop figure of stock soot blower seal fan.
The specific embodiment:
The #2 of Tianjin Guohua Panshan Power Co., Ltd. stove is ∏-1650-25-545KT (∏-76) type direct current super critical boiler that former Soviet Union radio frequency channel Er Sike manufactory produces, the operation of going into operation in June, 1996.
Steam sootblower Germany Clyde-Bel's lattice Man produces soot blower and amounts to 78.Soot blower is divided into long and short two kinds, and stock model PLS86E has 36 (joining a seal fan for every), is responsible for purging I, II, III level pendant superheater and high temperature superheater, 11.7 meters of soot blower shower nozzle impulse strokes, 12 minutes working times; Quarter butt model PS85E has 42 (no seal fans), is responsible for purging to the flow through shaft heating surface 5.57 meters of soot blower shower nozzle impulse strokes, 8 minutes working times.There are two steam supply door NV1161, NV1165 (respectively joining bypass door NV1161-1, a NV1165-1) in the steam soot blowing system, four hydrophobic doors NV1163, NV1164, NV1167, NV1168, detecting element has 4 of electro connecting pressure gauges, and 4 of thermal resistances are arranged in and blow grey drain water piping.
As shown in Figure 1: a kind of Boiler Steam is blown grey control device, connected to form successively by power cabinet, stock soot blower control regulator cubicle, quarter butt soot blower control regulator cubicle and PLC switch board, power cabinet is carried out two-way the connection with the PLC switch board respectively with stock soot blower control regulator cubicle; Before the binding post of PLC switch board and air feed door, air feed door bypass door, hydrophobic door, all soot blower, the drain valve before thermal resistance, the drain valve pressure transmitter be connected, the PLC switch board is connected with host computer is two-way.The input port of above-mentioned PLC switch board is connected with the USP power supply, keeps a Siemens OP7 type guidance panel on the PLC switch board.
As shown in Figure 2: with stock soot blower N2-N18 is that example illustrates its power loop, and N16 specifies with soot blower.The motor M 161 of stock soot blower N16 successively with input wires terminal A161, B161, C161, the contactor+2-K161M of stock soot blower control regulator cubicle, advance (moving back) overcurrent protector and be connected in series successively.
As shown in Figure 3: with stock soot blower N1, N3, N5, N7-N1 7 is that example illustrates its power loop.N3 specifies with soot blower, and the seal fan M32 of stock soot blower N3 directly is connected with power supply by air switch.
Claims (3)
1. a Boiler Steam is blown grey control device, it is characterized in that: connected to form successively by power cabinet, stock soot blower control regulator cubicle, quarter butt soot blower control regulator cubicle and PLC switch board, power cabinet is carried out two-way the connection with the PLC switch board respectively with stock soot blower control regulator cubicle; The output wiring terminal of stock soot blower control regulator cubicle is connected with stock soot blower, stock soot blower motor and stock soot blower seal fan respectively, and the input wires terminal is connected with the binding post of PLC switch board; The output wiring terminal of quarter butt soot blower control regulator cubicle is connected with quarter butt soot blower motor, and input terminal is connected with the binding post of PLC switch board; Wherein, set up overcurrent protector on the line of long and short bar soot blower motor, stock soot blower seal fan and regulator cubicle output wiring terminal; Before the binding post of PLC switch board and air feed door, air feed door bypass door, hydrophobic door, all soot blower, the drain valve before thermal resistance, the drain valve pressure transmitter be connected; The PLC switch board is connected with host computer is two-way.
2. Boiler Steam according to claim 1 is blown grey control device, it is characterized in that: the input port of above-mentioned PLC switch board is connected with the USP power supply.
3. Boiler Steam according to claim 1 is blown grey control device, it is characterized in that: keep a Siemens OP7 type guidance panel on the above-mentioned PLC switch board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200964996U CN201059567Y (en) | 2007-06-22 | 2007-06-22 | Control device for boiler steam blowing ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200964996U CN201059567Y (en) | 2007-06-22 | 2007-06-22 | Control device for boiler steam blowing ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201059567Y true CN201059567Y (en) | 2008-05-14 |
Family
ID=39408040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200964996U Expired - Fee Related CN201059567Y (en) | 2007-06-22 | 2007-06-22 | Control device for boiler steam blowing ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201059567Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506438A (en) * | 2011-11-06 | 2012-06-20 | 浙江国华浙能发电有限公司 | Variable-stroke soot blowing method for reducing reheat steam temperature deviation of fossil power plant |
| CN103635748A (en) * | 2011-04-21 | 2014-03-12 | 克莱德贝格曼机器设备制造有限公司 | Cleaning device for thermal power plant, method for installing cleaning device and method for cleaning thermal power plant |
| CN108398966A (en) * | 2018-03-01 | 2018-08-14 | 鄂尔多斯市君正能源化工有限公司 | A kind of soot blower system pressure monitoring device and soot-blowing control method |
| CN110986066A (en) * | 2019-12-24 | 2020-04-10 | 华能沁北发电有限责任公司 | Boiler soot blower temperature and pressure protection control method |
-
2007
- 2007-06-22 CN CNU2007200964996U patent/CN201059567Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103635748A (en) * | 2011-04-21 | 2014-03-12 | 克莱德贝格曼机器设备制造有限公司 | Cleaning device for thermal power plant, method for installing cleaning device and method for cleaning thermal power plant |
| CN102506438A (en) * | 2011-11-06 | 2012-06-20 | 浙江国华浙能发电有限公司 | Variable-stroke soot blowing method for reducing reheat steam temperature deviation of fossil power plant |
| CN108398966A (en) * | 2018-03-01 | 2018-08-14 | 鄂尔多斯市君正能源化工有限公司 | A kind of soot blower system pressure monitoring device and soot-blowing control method |
| CN110986066A (en) * | 2019-12-24 | 2020-04-10 | 华能沁北发电有限责任公司 | Boiler soot blower temperature and pressure protection control 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: 20080514 Termination date: 20150622 |
|
| EXPY | Termination of patent right or utility model |