CN105986047A - Control method for bearing bush grinding of blast furnace gas excess pressure generator set - Google Patents
Control method for bearing bush grinding of blast furnace gas excess pressure generator set Download PDFInfo
- Publication number
- CN105986047A CN105986047A CN201510086854.0A CN201510086854A CN105986047A CN 105986047 A CN105986047 A CN 105986047A CN 201510086854 A CN201510086854 A CN 201510086854A CN 105986047 A CN105986047 A CN 105986047A
- Authority
- CN
- China
- Prior art keywords
- control system
- plc control
- bearing bush
- valve
- plc
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000004519 grease Substances 0.000 claims description 14
- 239000003034 coal gas Substances 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000010687 lubricating oil Substances 0.000 abstract 3
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y02P10/212—
Landscapes
- Control Of Turbines (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention provides a control method for bearing bush grinding of a blast furnace gas residual pressure generator set, which is characterized in that an intermediate relay is additionally arranged on a quick-acting valve operation box, a gas basic inlet quick-acting valve closing signal is directly led to a generator switching loop, the scanning program section parameter of a PLC control system is set to 6000ms, the output state of a PLC control system module channel is changed into a state that a lubricating oil pump keeps outputting, namely when the PLC control system has power failure and system redundancy module failure, the lubricating oil pump keeps running, the external network of an electrical comprehensive protection system is not disconnected, the quick-acting valve acts, the quick-acting valve closing in-place signal is directly transmitted to the generator switching loop, and the generator is controlled to be stopped reliably. The invention can ensure that the outer net of the electrical comprehensive protection system is not disconnected in the fault state of the PLC control system, and the lubricating oil pump continues to operate, and the generator is stopped reliably, thereby avoiding the serious equipment accident of the large bearing bush caused by the heating of the bearing bush of the unit, prolonging the service life of the bearing bush and reducing the operation cost.
Description
Technical field
The invention belongs to technical field of electric control, particularly relate to one and prevent blast furnace gas excess pressure power generating unit (TRT) from grinding watt
Control method.
Background technology
Blast furnace gas excess pressure power generating unit i.e. TRT unit relies on blast furnace waste pressure generating, and itself is also with electric operation function.TRT
Set lubricant oil pump start and stop are controlled by PLC control system, existing control technology be when TRT unit meter parameter such as temperature,
When vibration, pressure etc. occur abnormal, signal reaches PLC control system, and control system triggers signal makes coal gas basis enter outspoken cutting
Valve events, cuts off source of the gas；Meanwhile, the PLC control system number of delivering letters to electric Integrated Protection System, TRT electromotor and external power grid solution
Row.When PLC control system fault, PLC control system allows set lubricant oil pump stop automatically, and cuts valve soon and be not related to, and outer net is not
Off-the-line, due to grease pump out of service after, the big axle of unit is also rotating, and remains in that the rotating speed at a high speed fortune of 3000rmp/min
OK, thus it is big to there is at unit bearing shell caloric value, the pernicious equipment breakdown that big axle grinds watt occurs.
Summary of the invention
Continue to run with it is desirable to provide one is capable of grease pump under PLC control system malfunction, thus prevent machine
Group oil starvation grinds the control method that the blast furnace gas excess pressure power generating unit of watt accident grinds watt.
To this end, the solution that the present invention is taked is:
The control method that a kind of blast furnace gas excess pressure power generating unit grinds watt, utilizes original generating set PLC control system, electrically combines
Close protection system, cut valve and grease pump soon, it is characterised in that:
Enter outspoken valve control box of cutting on coal gas basis and set up auxiliary reclay, auxiliary reclay respectively with PLC control system and lubrication
Oil pump connects；
Coal gas basis enters outspoken valve OFF signal of cutting be directed directly to the electromotor of electric Integrated Protection System and cut on lock loop；
Amendment PLC control system scanning imaging system section parameter, set the sweep time in PLC control system scanning imaging system section parameter
For 6000ms, it is ensured that principal and subordinate's frame CPU is with batch configuration；
PLC control system module channels output state is changed into grease pump and does holding output state, i.e. PLC control system generation
When power failure, system redundancy module failure, grease pump remains on, electric Integrated Protection System outer net not off-the-line, cuts valve actuation soon
Make, cut valve soon and close the signal that puts in place and be fed directly to electromotor and cut lock loop, control electromotor reliable shutdown.
The invention have the benefit that
The present invention can be under PLC control system malfunction, electric Integrated Protection System outer net not off-the-line, it is ensured that grease pump continues
Reforwarding row, and electromotor reliable shutdown, thus avoid the big axle caused due to the heating of unit bearing shell to grind a watt pernicious equipment breakdown, prolong
Long bearing shell service life, reduce operating cost.
Accompanying drawing explanation
Fig. 1 is blast furnace gas excess pressure power generating unit control system and control flow chart.
In figure: bold portion is original part, and dotted portion is for newly establishing part.
Detailed description of the invention
As seen from Figure 1, the control method that blast furnace gas excess pressure power generating unit of the present invention grinds watt, is to utilize original PLC to control
System, electric Integrated Protection System, cut valve and grease pump soon on the basis of, enter outspoken valve control box of cutting on coal gas basis and set up
Auxiliary reclay, auxiliary reclay is connected with PLC control system and grease pump respectively.
Coal gas basis enters outspoken valve OFF signal of cutting be directed directly to the electromotor of electric Integrated Protection System and cut on lock loop.
Amendment PLC control system scanning imaging system section parameter, set the sweep time in PLC control system scanning imaging system section parameter
For 6000ms, it is ensured that principal and subordinate's frame CPU updates with batch configuration, computer operating system, it is to avoid PLC control system fault.
PLC control system module channels output state is changed into grease pump and does holding output state, i.e. PLC control system generation
When power failure, system redundancy module failure, grease pump remains on, electric Integrated Protection System outer net not off-the-line, cuts valve actuation soon
Make, cut valve soon and close the signal that puts in place and be fed directly to electromotor and cut lock loop, control electromotor reliable shutdown.
Claims (1)
1. the control method that blast furnace gas excess pressure power generating unit grinds watt, utilizes original generating set PLC to control
System processed, electric Integrated Protection System, cut valve and grease pump soon, it is characterised in that:
Entering outspoken valve control box of cutting on coal gas basis and set up auxiliary reclay, auxiliary reclay is controlled with PLC respectively
System processed and grease pump connect；
Coal gas basis enters outspoken valve OFF signal of cutting be directed directly to the electromotor of electric Integrated Protection System and cut lock and return
Lu Shang；
Amendment PLC control system scanning imaging system section parameter, by PLC control system scanning imaging system section parameter
Sweep time is set as 6000ms, it is ensured that principal and subordinate's frame CPU is with batch configuration；
Change PLC control system module channels output state into grease pump and do holding output state, i.e. PLC
Control system has a power failure, system redundancy module failure time, grease pump remains on, electric integrated protection
System outer net not off-the-line, cuts valve events soon, cuts valve soon and closes the signal that puts in place and be fed directly to electromotor and cut lock loop,
Control electromotor reliable shutdown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086854.0A CN105986047A (en) | 2015-02-25 | 2015-02-25 | Control method for bearing bush grinding of blast furnace gas excess pressure generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086854.0A CN105986047A (en) | 2015-02-25 | 2015-02-25 | Control method for bearing bush grinding of blast furnace gas excess pressure generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105986047A true CN105986047A (en) | 2016-10-05 |
Family
ID=57038449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510086854.0A Pending CN105986047A (en) | 2015-02-25 | 2015-02-25 | Control method for bearing bush grinding of blast furnace gas excess pressure generator set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105986047A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1539998A (en) * | 2003-10-31 | 2004-10-27 | 武汉钢铁设计研究总院 | Control method for stopping power generation systm operated by using excess pressure of blast furnace gas and relevant software |
| CN101760573A (en) * | 2009-12-31 | 2010-06-30 | 中冶南方工程技术有限公司 | Method for controlling pressure of blast furnace top by adopting gas dry dust removing device |
| CN102536350A (en) * | 2011-12-31 | 2012-07-04 | 西安陕鼓动力股份有限公司 | Safety control method at urgent fault time of power supply of TRT (Top gas pressure Recovery Turbine) set automatic control system |
| CN203007284U (en) * | 2012-12-27 | 2013-06-19 | 攀钢集团攀枝花钢钒有限公司 | Safety control system of blast furnace |
| CN203299612U (en) * | 2013-05-10 | 2013-11-20 | 河北钢铁股份有限公司邯郸分公司 | Gas excess pressure generator set control unit module |
| CN103628933A (en) * | 2013-12-02 | 2014-03-12 | 成都成发科能动力工程有限公司 | Control method for realizing ETS (emergency trip system) function of small-sized steam turbine set |
| CN103725813A (en) * | 2014-01-02 | 2014-04-16 | 莱芜钢铁集团有限公司 | TRT coordination control method and system |
-
2015
- 2015-02-25 CN CN201510086854.0A patent/CN105986047A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1539998A (en) * | 2003-10-31 | 2004-10-27 | 武汉钢铁设计研究总院 | Control method for stopping power generation systm operated by using excess pressure of blast furnace gas and relevant software |
| CN101760573A (en) * | 2009-12-31 | 2010-06-30 | 中冶南方工程技术有限公司 | Method for controlling pressure of blast furnace top by adopting gas dry dust removing device |
| CN102536350A (en) * | 2011-12-31 | 2012-07-04 | 西安陕鼓动力股份有限公司 | Safety control method at urgent fault time of power supply of TRT (Top gas pressure Recovery Turbine) set automatic control system |
| CN203007284U (en) * | 2012-12-27 | 2013-06-19 | 攀钢集团攀枝花钢钒有限公司 | Safety control system of blast furnace |
| CN203299612U (en) * | 2013-05-10 | 2013-11-20 | 河北钢铁股份有限公司邯郸分公司 | Gas excess pressure generator set control unit module |
| CN103628933A (en) * | 2013-12-02 | 2014-03-12 | 成都成发科能动力工程有限公司 | Control method for realizing ETS (emergency trip system) function of small-sized steam turbine set |
| CN103725813A (en) * | 2014-01-02 | 2014-04-16 | 莱芜钢铁集团有限公司 | TRT coordination control method and system |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |
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| WD01 | Invention patent application deemed withdrawn after publication |