CN201046970Y - Tuyere slag-filling preventing automatic control device for blast furnaces - Google Patents

Tuyere slag-filling preventing automatic control device for blast furnaces Download PDF

Info

Publication number
CN201046970Y
CN201046970Y CNU2007200361486U CN200720036148U CN201046970Y CN 201046970 Y CN201046970 Y CN 201046970Y CN U2007200361486 U CNU2007200361486 U CN U2007200361486U CN 200720036148 U CN200720036148 U CN 200720036148U CN 201046970 Y CN201046970 Y CN 201046970Y
Authority
CN
China
Prior art keywords
blower fan
valve
control
wind
wind turning
Prior art date
Application number
CNU2007200361486U
Other languages
Chinese (zh)
Inventor
吴宗霞
孙章连
樊冰茹
Original Assignee
马鞍山伏斯特科技发展有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 马鞍山伏斯特科技发展有限公司 filed Critical 马鞍山伏斯特科技发展有限公司
Priority to CNU2007200361486U priority Critical patent/CN201046970Y/en
Application granted granted Critical
Publication of CN201046970Y publication Critical patent/CN201046970Y/en

Links

Abstract

The utility model provides an automatic control device for preventing slag from entering a tuyere and can be used for 3 to 5 blast furnaces of the iron works, the device consists of a wind dispensation pipeline, a control valve and a DCS or a PLC control system device. The utility model is characterized in that the wind dispensation pipeline with appropriate diameter is sequentially arranged between the air supply pipelines of the two blast furnaces and at the position close to the inlet of a hot blast furnace, both heads are provided with electric shut-off butterfly valves, the middle is provided with a fast started wind dispensation control butterfly valve, the DCS or the PLC system device is connected with each blast furnace blower and the signal of the corresponding control valve, so as to carry out the detection and judgment of the operating states and implement the wind dispensation control actions accordingly; the device can achieve the good effect of preventing slag from entering the tuyere and promote the continuous and stable production of the blast furnaces.

Description

The slag automatic control device is irritated in the anti-air port of many blast furnaces
Technical field
The utility model belongs to the ironmaking technology field, and the slag automatic control device is irritated in the anti-air port that is specifically related to a kind of many operation blast furnaces of iron work.
Background technology
Along with the development of China's Iron And Steel Industry, the iron-smelting blast furnace sum of China has reached nearly thousand.All kinds of blast furnaces are in operation and all will run into an insoluble problem, and Here it is shuts down for the blower fan of blast furnace air feed suddenly because of machinery, electrical accident, and blast furnace stops air feed suddenly and causes blast-furnace tuyere pour slag.In about 8 seconds after the medium and small blast furnace blowing-out to the 380-450 cubic meter, unsegregated molten iron and slag mixture are all solidifying under the deposition on tens air outlets in the stove, thereby cause the air port to irritate slag.After forming the air port and irritating slag, the blast furnace repairing that must stop production will be employed great amount of manpower and material resources the air port is changed, and the repairing process approximately needs tens hours, and the direct economic loss that every blast furnace causes owing to this accident will be more than 1,000,000 yuan.
Summary of the invention
The utility model provides a kind of anti-air port of 3-5 seat blast furnace to irritate the slag automatic control device at the technical problem that prior art exists.
Device provided by the utility model is: successively between the air supply duct of two blast furnaces, set up the ventilator trunk of a suitable bore near the entry position of hotblast stove, two is equipped with electronic cut-out butterfly valve, the centre is equipped with the wind turning control butterfly valve of quick unlatching, DCS or PLC system and device are connected with the state of every blast furnace blower, motor and the signal of corresponding by-pass valve control, its running status is detected judgement, and corresponding execution wind turning control action.
DCS or PLC system detect and carry out the action control process:
1. DCS or PLC system detect the operating mode of safe operation of running status, the blower fan of blower motor, in order to the normal and accidental state of judgment task blower fan, and corresponding execution wind turning control action;
2. DCS or PLC system detect the opened condition of blow valve, in order to judge that this typhoon machine is orderly closedown or force outage, avoid wind turning control flase operation;
3. DCS or PLC system detect the full-gear of blower fan outlet non-return valve, in order to the protection exception blower fan, prevent from blower fan machinery is caused pernicious damage;
4. the pressure of air supply of DCS or PLC system detection works better blower fan must (generally be set at 100~120KPa) greater than certain setting pressure; just allow to carry out the wind turning control action, in order to protect normal but be in the blast furnace and the blower fan (only a few operating mode) of slow air quantity air feed.
5. input/the exit status of other opened condition, wind turning control, hand-operated forced, pilot system, accident action record etc. as the wind turning segregaion valve.
This automatic control device can detect the ordinary production and the improper production status of blast furnace blower simultaneously, and the air feed operating mode of blast furnace blower, the disconnected wind of solution blast furnace is right after the remedial measures under the situation, at the characteristics of blast-furnace tuyere pour slag, within short several seconds, before the air port slag solidifies, certain pressure is recovered to reach in each air port, to keep overcoming stock column resistance in the stove, reach the effect that slag is irritated in the prevention air port, the continuous stable yields of blast furnace is played good promoter action.
Description of drawings
Fig. 1 is the utility model device synoptic diagram.
Fig. 2 is the utility model job site synoptic diagram.
Embodiment
Can see that in conjunction with Fig. 1 and Fig. 2 the utility model device is made of Ethernet bridge 1, PLC or DCS system 2, in-situs tester table 3, valve site more than 4 parts.Respectively successively at 1# blast furnace 6,2# blast furnace 7,3# blast furnace 8,4# blast furnace 9, between the air supply duct of per two blast furnaces of 5# blast furnace 10, a suitable bore 1# wind turning pipeline 17 is set up in entry position near hotblast stove 5,2# wind turning pipeline 27,3# wind turning pipeline 37,4# wind turning pipeline 47,5# wind turning pipeline 57, two is equipped with electronic cut-out butterfly valve: V3 segregaion valve 18, V5 segregaion valve 20, V6 segregaion valve 28, V8 segregaion valve 30, V9 segregaion valve 38, V11 segregaion valve 40, V12 segregaion valve 48, V14 segregaion valve 50, V15 segregaion valve 58, V17 segregaion valve 60, the centre is equipped with the wind turning control butterfly valve V4 control valve 19 of quick unlatching, V7 control valve 29, V10 control valve 39, V13 control valve 49, V16 control valve 59, the two typhoon machine 1# blower fans 11 successively of 2 pairs of ordinary production of the DCS of device or PLC system, 2# blower fan 21,3# blower fan 31,4# blower fan 41, the detection of the running status of 5# blower fan 51 is judged.Concrete detection and executing state are:
1. standard state, PLC system 2 detects the running status of adjacent two blast furnace blower motors: 1# motor stopped status 13,2# motor stopped status 23,3# motor stopped status 33,4# motor stopped status 43,53,5# motor stopped status, and the operating mode of blower fan safe operation: 1# blower fan safe operation protection action 12,2# blower fan safe operation protection action 22,3# blower fan safe operation protection action 32,4# blower fan safe operation protection action 42,5# blower fan safe operation protection action 52, in order to the normal and accidental state of judgment task blower fan, and corresponding execution blower fan control action;
2. go out air-valve 1# blower fan and go out air-valve 15,2# blower fan and go out air-valve 25,3# blower fan and go out air-valve 35,4# blower fan and go out the opened condition that air-valve 45,5# blower fan go out air-valve 55,, avoid wind turning control flase operation in order to judge that this typhoon machine is orderly closedown or force outage;
3. the full-gear of 1# blower fan vacuum breaker 14,2# blower fan vacuum breaker 24,3# blower fan vacuum breaker 34,4# blower fan vacuum breaker 44,5# blower fan vacuum breaker 54 in order to the protection exception blower fan, prevents from blower fan machinery is caused pernicious damage;
4. 1# blower fan pressure of air supply 16,2# blower fan pressure of air supply 26,3# blower fan pressure of air supply 36,4# blower fan pressure of air supply 46,5# blower fan pressure of air supply 56 must (generally be set at 100~120KPa) greater than certain setting pressure; just allow to carry out the wind turning control action, in order to protect normal but be in the blast furnace and the blower fan (only a few operating mode) of slow air quantity air feed.
5. input/the exit status of other the opened condition as the wind turning segregaion valve, wind turning control, hand-operated forced, pilot system, accident action record etc. are supporting display operation and management tool.Break down in emergency circumstances at a certain typhoon machine, carry out fast control command, wind turning control butterfly valve was opened fully at 2.5 seconds, made because of the break blast-furnace tuyere of wind of fan trouble to recover ventilation rapidly in 6 seconds, and keep certain pressure, prevent that the blast-furnace tuyere pour slag accident from taking place.
The control process of system's wind turning is as follows:
1. DCS or PLC system 2 detects the operating mode of safe operation of running status, the blower fan of 1# blower fans 11,2# blower fan 21,3# blower fan 31,4# blower fan 41,5# blower fan 51, the normal and accidental state of judgment task blower fan, and corresponding execution wind turning control action; When system is in wind turning equipment bringing normally into operation state, this moment, operator should confirm that the V3 segregaion valve 18 as 1# wind turning pipeline 17, the electrically operated valve of V5 segregaion valve 20 open; When possessing the wind turning logical condition, V4 control valve 19 will be opened fast; After wind turning finished, operator now will close one with wind turning segregaion valve V3 segregaion valve 18 or V5 segregaion valve 20, just can withdraw from the wind turning input of these two blast furnaces then, closed wind turning control valve 19 simultaneously automatically; The operation of the wind turning pipe passage of other 2# wind turning pipeline 27,3# wind turning pipeline 37,4# wind turning pipeline 47,5# wind turning pipeline 57 is corresponding different pipe passages, valve respectively, operates the same.
2. DCS or PLC system 2 detects the 1# blower fans and goes out air-valve 15,2# blower fan and go out air-valve 25,3# blower fan and go out air-valve 35,4# blower fan and go out the opened condition that air-valve 45,5# blower fan go out air-valve 55, in order to judge that this typhoon machine is orderly closedown or force outage, avoid wind turning control flase operation, when two blower fan outlet valves of this channel group are in open mode, the two typhoon machines that can assert this passage are in normal operation, therefore a certain typhoon machine fault allows when the wind turning condition is set up to this blast furnace wind turning; Go out air-valve during orderly closedown and be in closing condition, also need not to this blast furnace wind turning even other conditions are set up;
3. DCS or PLC system 2 detects 1# blower fan 11,2# blower fan 21,3# blower fan 31, the 4# blower fan 41 of works better, the pressure of air supply of 5# blower fan 51,1# blower fan pressure of air supply 16,2# blower fan pressure of air supply 26,3# blower fan pressure of air supply 36,4# blower fan pressure of air supply 46,5# blower fan pressure of air supply 56 must be greater than certain setting pressure, general 100~the 120KPa that sets just allows to carry out the wind turning control action; When a certain fan trouble, the blower fan that a condition of blast furnace and the wind turning of blower fan safety is another work of this channel group exert oneself (blast) want the set(ting)value of overpressure just to allow to another blast furnace wind turning, otherwise can influence the operating mode of this normal blast furnace and blower fan;
4. the safe operation guard signal when a certain blower fan takes place or the disappearance of main motor operation signal, with blower fan outlet non-return valve complete shut-down, under the condition that 1. this condition all takes place and~3. possess simultaneously, V4 control valve 19 (or 29 or 39 or 49 or 59) will be opened fast, realize the wind turning function;
5. getting rid of under the situation of all conditions, when needing to force manual wind turning, can open V4 control valve 19 (or 29 or 39 or 49 or 59) control valve fast, realizing manual wind turning function;
6. normally after pressure reaches set-point, can earlier a segregaion valve in the corresponding wind turning pipeline cut out when stand-by fan puts into operation or recovers, withdraw from this passage wind turning then, get final product this vent control valve of automatic quick closedown, working fan is in normal ventilation state.

Claims (1)

1. the slag automatic control device is irritated in the anti-air port of many blast furnaces, form by wind turning pipeline, by-pass valve control and DCS or PLC Controlling System device, it is characterized in that successively between the air supply duct of two blast furnaces, set up the wind turning pipeline of a suitable bore near the entry position of hotblast stove, two is equipped with electronic cut-out butterfly valve, the centre is equipped with the wind turning control butterfly valve of quick unlatching, and DCS or PLC system and device are connected with control corresponding valve signal with every blast furnace blower.
CNU2007200361486U 2007-04-13 2007-04-13 Tuyere slag-filling preventing automatic control device for blast furnaces CN201046970Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200361486U CN201046970Y (en) 2007-04-13 2007-04-13 Tuyere slag-filling preventing automatic control device for blast furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200361486U CN201046970Y (en) 2007-04-13 2007-04-13 Tuyere slag-filling preventing automatic control device for blast furnaces

Publications (1)

Publication Number Publication Date
CN201046970Y true CN201046970Y (en) 2008-04-16

Family

ID=39299545

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007200361486U CN201046970Y (en) 2007-04-13 2007-04-13 Tuyere slag-filling preventing automatic control device for blast furnaces

Country Status (1)

Country Link
CN (1) CN201046970Y (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102051437A (en) * 2010-12-30 2011-05-11 中国恩菲工程技术有限公司 Air-supplying device for revolving furnace
CN102174665A (en) * 2010-12-30 2011-09-07 中国恩菲工程技术有限公司 Air supply control method for converter
CN102337367A (en) * 2011-10-21 2012-02-01 中冶南方工程技术有限公司 Air distributing control method for blast furnace blower system
CN102337368A (en) * 2011-10-21 2012-02-01 中冶南方工程技术有限公司 Air dispensation control systems for air blowing systems of blast furnaces
CN102344980A (en) * 2011-10-21 2012-02-08 中冶南方工程技术有限公司 Air dispensation control system for blower system of blast furnace in metallurgical enterprise
CN102344978A (en) * 2011-10-21 2012-02-08 中冶南方工程技术有限公司 System for realizing control of mutual air dispensation in operation process of air supply systems of different blast furnaces
CN102344979A (en) * 2011-10-21 2012-02-08 中冶南方工程技术有限公司 Air dispensation control system for blower system of blast furnace in metallurgical enterprise

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102051437A (en) * 2010-12-30 2011-05-11 中国恩菲工程技术有限公司 Air-supplying device for revolving furnace
CN102174665A (en) * 2010-12-30 2011-09-07 中国恩菲工程技术有限公司 Air supply control method for converter
CN102174665B (en) * 2010-12-30 2015-10-28 中国恩菲工程技术有限公司 A kind of air feed control method for converter
CN102051437B (en) * 2010-12-30 2013-11-13 中国恩菲工程技术有限公司 Air-supplying device for revolving furnace
CN102337367A (en) * 2011-10-21 2012-02-01 中冶南方工程技术有限公司 Air distributing control method for blast furnace blower system
CN102337368A (en) * 2011-10-21 2012-02-01 中冶南方工程技术有限公司 Air dispensation control systems for air blowing systems of blast furnaces
CN102344978A (en) * 2011-10-21 2012-02-08 中冶南方工程技术有限公司 System for realizing control of mutual air dispensation in operation process of air supply systems of different blast furnaces
CN102344979A (en) * 2011-10-21 2012-02-08 中冶南方工程技术有限公司 Air dispensation control system for blower system of blast furnace in metallurgical enterprise
CN102344980B (en) * 2011-10-21 2014-04-09 中冶南方工程技术有限公司 Air dispensation control system for blower system of blast furnace in metallurgical enterprise
CN102337367B (en) * 2011-10-21 2014-07-02 中冶南方工程技术有限公司 Air distributing control method for blast furnace blower system
CN102344980A (en) * 2011-10-21 2012-02-08 中冶南方工程技术有限公司 Air dispensation control system for blower system of blast furnace in metallurgical enterprise

Similar Documents

Publication Publication Date Title
CN105539525B (en) Suitable for the Vehicle Controller remote failure repositioning method of full-automatic driving
CN102340127B (en) Digitalized comprehensive motor protector
CN103486687B (en) The guard method of air-conditioning system and protective device
CN201856168U (en) Grinding wheel protective cover of grinding machine with function of power failure when opening door
JP2004122258A (en) Robot system
CN102157212B (en) Indicating method and system for nuclear power plant back-up control panel
CN106207982A (en) A kind of electric locomotive and battery system thereof
WO2014094340A1 (en) Pipe bender and method of real-time detection on pipe bender
CN108339209B (en) Full-automatic fire extinguishing device for preventing powder process system from deflagration and processing method thereof
CN101480726A (en) Bearing ring turning digital control lathe with automatic on-line air pressure detection function
CN106437218B (en) The argon gas of titanic alloy machining protects system and method
CN103631193B (en) A kind ofly realize the system and method that equipment control mode concentrates bumpless transfer
CN104646167B (en) A kind of primary air pressure self-adaptation control method
CN108639710A (en) A kind of control system and method for belt operation
CN204942710U (en) A kind of Novel back pressure valve automatic flat opening device
CN107377632A (en) It is a kind of to reduce reinforcing bar size poor temperature control system and operating method end to end
CN201378274Y (en) Automatic emergency lifting device when in PLC breakdown
CN104659759B (en) The intelligent operating mechanism of high voltage isolator
CN202825362U (en) Clamping device with clamping precision detection mechanism
CN102074932B (en) Method and system for monitoring motor load
CN109487024A (en) Blast furnace gas and main air hose lead to net system
CN102022313A (en) Control system and method of air compressor unit
CN106081970B (en) Based on speed than to boring winch automatic braking protective device and method
CN201333528Y (en) Novel bearing-ring turning numerical-control lathe
CN201779096U (en) Integrated oil pump master station

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20140715

Address after: 243000 Anhui city of Ma'anshan province Dangtu Lixian Industrial Park Road and the intersection of Longchang Road

Patentee after: Maanshan First Auto-control Co., Ltd.

Address before: 243000 Anhui city of Ma'anshan province Dangtu Industrial Park

Patentee before: Fusite Science and Technology Development Co., Ltd., Maanshan

ASS Succession or assignment of patent right

Owner name: MAANSHAN FIRST AUTO-CONTROL CO., LTD.

Free format text: FORMER OWNER: FUSITE SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD., MAANSHAN

Effective date: 20140715

C41 Transfer of patent application or patent right or utility model
CP01 Change in the name or title of a patent holder

Address after: 243000 Anhui city of Ma'anshan province Dangtu Lixian Industrial Park Road and the intersection of Longchang Road

Patentee after: ANHUI FUSITE INTELLIGENT TECHNOLOGY CO., LTD.

Address before: 243000 Anhui city of Ma'anshan province Dangtu Lixian Industrial Park Road and the intersection of Longchang Road

Patentee before: Maanshan First Auto-control Co., Ltd.

C56 Change in the name or address of the patentee
CX01 Expiry of patent term

Granted publication date: 20080416

CX01 Expiry of patent term