CN103589856A - Heating furnace cooling control system and control method - Google Patents
Heating furnace cooling control system and control method Download PDFInfo
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- CN103589856A CN103589856A CN201310615420.6A CN201310615420A CN103589856A CN 103589856 A CN103589856 A CN 103589856A CN 201310615420 A CN201310615420 A CN 201310615420A CN 103589856 A CN103589856 A CN 103589856A
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Abstract
The invention relates to a heating furnace cooling control system, and comprises a cooling water supply system, wherein the cooling water supply system is connected to a circulating water pipe network, two branches divided by the circulating water pipe network are connected to two heating furnaces, the heating furnace is connected to a control device and a command generator capable of outputting the control command, the circulating water pipe network is connected with the pipe network through a valve, and the other end of the pipe network is connected with an emergency water supply system. The heating furnace cooling control system has the characteristics of small investment, fast effectiveness and convenient operation, under the abnormal water supply condition of power off, damage of a water pump and leakage of the pipe network, the heating furnace circulated cooling water system is not interfered by external condition, safety water can be timely input, normal cooling of the heating furnace can be ensure, safety of the furnace is ensured, and the heating furnace cooling control system is suitable for the heating furnace cooling water system in a hot rolling medium and heavy plate factory.
Description
Technical field
The invention belongs to heater for rolling steel technical field, relate to a kind of process furnace cooling control system and control method thereof.
Background technology
At present domestic, the process furnace of Heavy Plate Plant is mainly with two kinds of walking beam heating furnace and pusher-type furnaces, steel billet advance and supported work is all to be completed by Shui Lianglai.The water coolant of process furnace is mainly for cooling water beam, fire door He Lu district measuring element etc.Water beam is to be generally made by thick-walled tube, is subject to again repeated load effect under high temperature, if cooling not in place, its intensity reduces rapidly, or water coolant becomes high-temperature steam, thereby occurs that stove caves in and the serious consequence such as blast.
Closely related because of normal supply and the process furnace operating safety of process furnace water coolant, a lot of process furnace can be considered except normal circulation waterworks, increase a set of safety water supply system newly, to guarantee process furnace safety when design.Although security personnel's water system of stove can be considered in design, but because it is redundant system, do not cause designer and user's enough attention, just the design of security personnel's water is rested on to ideal phase, seldom can consider influencing each other between the pressure of safety water supply and flow and existing circulating water system comprehensively, be difficult to occur dropping in time security personnel's water when abnormal at recirculated water, guarantee stove safety.Such as now typical safety water supply system design: process furnace recirculated cooling water (pump group) water-supply pipe is connected with company security personnel's water, middlely by the water valve of ensuring public security, to control, the water valve of ensuring public security is generally rubber flap check valve.When system is normal, recirculating cooling water system end line pressure is greater than the security personnel of company water pressure, and body of heater is cooling to be provided by circulating water system.When abnormal insufficient water appears in generation recirculating cooling water system, recirculating cooling water system end line pressure is less than the security personnel of company water pressure, and the water valve of ensuring public security is opened automatically, guarantees the supply of process furnace water coolant.But in actual use, be subject to the cause influences such as state of the process furnace cooling water water yield, security personnel's water pressure and rubber flap check valve, security personnel's water valve can not cut out completely, cause occurring under normal circumstances in accident free, safety water supply supplies water together with feedwater with pump, causes process furnace cooling circulating water system overbalance.For guaranteeing water treatment system balance, have to the butterfly valve at security personnel's water valve two ends to be closed, by the ensure public security break-make of water valve of manual control switch.Can owing to existing spot check find in time and need for some time etc. to on-the-spot switch-valve, in stove, the water beam short period of time have water coolant to deform and to ftracture, even blast, operating personnel's safety in the safety of serious threat process furnace and region.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind of can be according to on-the-spot measuring element, promptly and accurately judge the running status of process furnace recirculated cooling water, waterworks automatically switches when abnormal, effectively solution disconnects control to carrying out automatically connected sum between recirculated water and security personnel's water, guarantees process furnace safety and process furnace cooling control system and the control method thereof of avoiding the appearance of outer draining.
The technical solution adopted for the present invention to solve the technical problems is: a kind of process furnace cooling control system, comprise cooling water system, cooling water system is connected with recirculated water pipe network, at recirculated water pipe network, separating two branch roads is connected with two process furnace, process furnace is separately connected with the controller of control device and output control command thereof, circulating pipe Netcom crosses valve and is connected with pipe network, and the pipe network the other end is connected with accident water supply system.
Its control method step is as follows:
The first step: be first used for monitoring process furnace cooling control system pressure of supply water, flow and electric power thus supplied by pressure unit and flow transmitter;
Second step: power whether to maintain within setting range by pressure unit and flow transmitter judgement supply process furnace water coolant house steward's pressure, flow and process furnace and work, if a certain parameter is not within setting range, continue monitoring process furnace cooling control system pressure of supply water, flow and electric power thus supplied, if send security personnel's water by controller to valve and open valve permission order;
The 3rd step: select to judge that whether two process furnace are in inspecting state with manual confirmation at man-machine communication interface, if in inspecting state, do not carry out security personnel's water and open valve order, if in standard state, carry out security personnel's water and open valve order;
The 4th step: operative employee carries out, after the confirmation of scene, manually assigning at man-machine communication interface and closing valve order, carries out security personnel's water valve and closes valve order, valve closes, recovery standard state.
Described process furnace comprises the controller of heating furnace body, Shui Liang, firing system, dress extractor, control device and output control command thereof.
At described circulating pipe, set up pressure unit and flow transmitter on the net separately.
The normal value of described pressure unit is set as being greater than 2bar, and the normal value of described flow transmitter is set as being greater than 800m3/h.
Described valve comprises a Pneumatic butterfly valve, be positioned at the Hand-operated butterfly valve A of Pneumatic butterfly valve inlet/outlet, Hand-operated butterfly valve B and with the Hand-operated butterfly valve C that is connected in parallel on Hand-operated butterfly valve A and Hand-operated butterfly valve B.
Described control device includes monitoring interface, warning device and man-machine communication interface.
The invention has the beneficial effects as follows: there is little, the instant effect of investment, easy to operate feature, can damage and a variety of causes such as pipeline network leak can not normal water supply in the situation that because of power-off, water pump at process furnace recirculating cooling water system, not disturbed by external conditions, the water of guaranteeing to ensure public security drops in time, guarantee the normal cooling of process furnace, to protect stove safety, be applicable to hot rolled steel plate factory process furnace cooling water system.
Accompanying drawing explanation
Fig. 1 is process furnace cooling water system schematic diagram;
Fig. 2 is that the inventive method is implemented schematic block diagram.
In figure: 10-accident water supply system, 11-pipe network, 20-Pneumatic butterfly valve, 21-Hand-operated butterfly valve A, 22-Hand-operated butterfly valve B, 23-Hand-operated butterfly valve C, 24-pressure unit, 25-flow transmitter, 30-cooling water system, 31-recirculated water pipe network, 40,41-process furnace.
Embodiment
Referring to Fig. 1, a kind of process furnace cooling control system, comprise cooling water system 30, cooling water system 30 is connected with recirculated water pipe network 31, at recirculated water pipe network 31, separating two branch roads is connected with two process furnace 40,41, process furnace 40,41 is separately connected with the controller of control device and output control command thereof, and recirculated water pipe network 31 is connected with pipe network 11 by valve, and pipe network 11 the other ends are connected with accident water supply system 10.
Referring to Fig. 2, its control method step is as follows:
The first step: be first used for monitoring process furnace 40,41 cooling control system pressure of supply waters, flow and electric power thus supplied by pressure unit 24 and flow transmitter 25;
Second step: power whether to maintain within setting range by pressure unit 24 and flow transmitter 25 judgement supply process furnace 40,41 water coolant house stewards' pressure, flow and process furnace 40,41 and work, if a certain parameter is not within setting range, continue monitoring process furnace 40,41 cooling control system pressure of supply waters, flow and electric power thus supplied, if send security personnel's water by controller to valve and open valve permission order;
The 3rd step: select to judge that whether two process furnace 40,41 are in inspecting state with manual confirmation at man-machine communication interface, if in inspecting state, do not carry out security personnel's water and open valve order, if in standard state, carry out security personnel's water and open valve order;
The 4th step: operative employee carries out, after the confirmation of scene, manually assigning at man-machine communication interface and closing valve order, carries out security personnel's water valve and closes valve order, valve closes, recovery standard state.
Described process furnace 40,41 comprises the controller of heating furnace body, Shui Liang, firing system, dress extractor, control device and output control command thereof.
On described recirculated water pipe network 31, set up pressure unit 24 and flow transmitter 25 separately.
The normal value of described pressure unit 24 is set as being greater than 2bar, and the normal value of described flow transmitter 25 is set as being greater than 800m3/h.
Described valve comprises a Pneumatic butterfly valve 20, be positioned at the Hand-operated butterfly valve A21 of Pneumatic butterfly valve 20 inlet/outlets, Hand-operated butterfly valve B22 and with the Hand-operated butterfly valve C23 that is connected in parallel on Hand-operated butterfly valve A21 and Hand-operated butterfly valve B22.
Described control device includes monitoring interface, warning device and man-machine communication interface.
Embodiment 1: the in the situation that of normal production, process furnace 40,41 cooling water system 30 water pumps damage, pressure is 1bar, lower than set(ting)value, first by pressure unit 24 and flow transmitter 25, is used for monitoring process furnace 40,41 cooling control system pressure of supply waters, flow and electric power thus supplied; Whether the pressure of supplying with process furnace 40,41 water coolant house stewards by pressure unit 24 judgement maintains within setting range is worked, because water pump damages, pressure is lower than set(ting)value, therefore pressure is not within setting range, continue monitoring process furnace 40,41 cooling control system pressure of supply waters, flow and electric power thus supplied, after treating pump maintenance, just can enter next step.
Embodiment 2: the in the situation that of normal production, process furnace 40,41 has a power failure, and power supply occurs abnormal, first by pressure unit 24 and flow transmitter 25, is used for monitoring process furnace 40,41 electric power thus supplied; Because process furnace 40,41 has a power failure, therefore do not enter next step, continue to get back to monitoring process furnace 40,41 cooling control system states, after service restoration, just can enter next step.
Embodiment 3: when process furnace cooling water system occurs extremely, when valve can not be opened automatically, can, by manually assigning out valve order at man-machine communication interface, carry out security personnel's water valve and open valve order.
The present invention has little, the instant effect of investment, easy to operate feature, can damage and a variety of causes such as pipe network 11 leakages can not normal water supply in the situation that because of power-off, water pump at process furnace recirculating cooling water system, not disturbed by external conditions, the water of guaranteeing to ensure public security drops in time, guarantee the normal cooling of process furnace 40,41, to protect stove safety, be applicable to hot rolled steel plate factory process furnace cooling water system.
Claims (7)
1. a process furnace cooling control system, comprise cooling water system, it is characterized in that: cooling water system is connected with recirculated water pipe network, at recirculated water pipe network, separating two branch roads is connected with two process furnace, process furnace is separately connected with the controller of control device and output control command thereof, circulating pipe Netcom crosses valve and is connected with pipe network, and the pipe network the other end is connected with accident water supply system.
2. process furnace cooling control system as claimed in claim 1, is characterized in that control method step is as follows:
The first step: be first used for monitoring process furnace cooling control system pressure of supply water, flow and electric power thus supplied by pressure unit and flow transmitter;
Second step: power whether to maintain within setting range by pressure unit and flow transmitter judgement supply process furnace water coolant house steward's pressure, flow and process furnace and work, if a certain parameter is not within setting range, continue monitoring process furnace cooling control system pressure of supply water, flow and electric power thus supplied, if send security personnel's water by controller to valve and open valve permission order;
The 3rd step: select to judge that whether two process furnace are in inspecting state with manual confirmation at man-machine communication interface, if in inspecting state, do not carry out security personnel's water and open valve order, if in standard state, carry out security personnel's water and open valve order;
The 4th step: operative employee carries out, after the confirmation of scene, manually assigning at man-machine communication interface and closing valve order, carries out security personnel's water valve and closes valve order, valve closes, recovery standard state.
3. process furnace cooling control system as claimed in claim 1, is characterized in that: described process furnace comprises the controller of heating furnace body, Shui Liang, firing system, dress extractor, control device and output control command thereof.
4. process furnace cooling control system as claimed in claim 1, is characterized in that: at described circulating pipe, set up pressure unit and flow transmitter on the net separately.
5. process furnace cooling control system as claimed in claim 4, is characterized in that: the normal value of described pressure unit is set as being greater than 2bar, and the normal value of described flow transmitter is set as being greater than 800m3/h.
6. process furnace cooling control system as claimed in claim 1, is characterized in that: described valve comprises a Pneumatic butterfly valve, be positioned at the Hand-operated butterfly valve A of Pneumatic butterfly valve inlet/outlet, Hand-operated butterfly valve B and with the Hand-operated butterfly valve C that is connected in parallel on Hand-operated butterfly valve A and Hand-operated butterfly valve B.
7. process furnace cooling control system as claimed in claim 1, is characterized in that: described control device includes monitoring interface, warning device and man-machine communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615420.6A CN103589856A (en) | 2013-11-28 | 2013-11-28 | Heating furnace cooling control system and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310615420.6A CN103589856A (en) | 2013-11-28 | 2013-11-28 | Heating furnace cooling control system and control method |
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| CN103589856A true CN103589856A (en) | 2014-02-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104928446A (en) * | 2014-03-19 | 2015-09-23 | 宝山钢铁股份有限公司 | Furnace door multipath water supply device |
| CN111102840A (en) * | 2019-12-30 | 2020-05-05 | 广西南国铜业有限责任公司 | Smelt bigeminal furnace circulating water system |
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| WO2001086005A1 (en) * | 2000-05-09 | 2001-11-15 | Paul Wurth S.A. | Cooling system for a metallurgical furnace |
| DE10035830A1 (en) * | 2000-07-22 | 2002-02-07 | Reflex Winkelmann & Pannhoff G | Apparatus for cooling exothermally operating production plants, e.g. blast and cupola furnaces, comprises cooling water cycle with cooling water supply container and degassing device for degassing cooling water |
| CN101476805A (en) * | 2008-10-14 | 2009-07-08 | 陕西彩虹电子玻璃有限公司 | Security emergency apparatus of cooling water system |
| CN101694351A (en) * | 2009-09-07 | 2010-04-14 | 青岛科技大学 | Intelligent industrial circulation water-cooling system |
| CN201501890U (en) * | 2009-08-14 | 2010-06-09 | 重庆钢铁(集团)有限责任公司 | Automatic control system for blast-furnace cooling water |
| CN201779997U (en) * | 2010-08-31 | 2011-03-30 | 东营方圆有色金属有限公司 | Power failure emergency circulating cooling water replenishing device of metallurgical furnace |
| CN201778067U (en) * | 2010-06-13 | 2011-03-30 | 福建宇星实业有限公司 | Furnace roller cooling system |
| CN201981574U (en) * | 2010-12-31 | 2011-09-21 | 北京京诚科林环保科技有限公司 | Pressure stabilization and water supplementing device for closed-cycle water system |
| CN102505735A (en) * | 2011-09-26 | 2012-06-20 | 黑龙江建龙钢铁有限公司 | Cooling water supplying device for steelmaking continuous casting equipment |
| CN202990007U (en) * | 2012-12-07 | 2013-06-12 | 广东华鳌合金新材料有限公司 | Improved water supply system for high-temperature alloy production line |
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2013
- 2013-11-28 CN CN201310615420.6A patent/CN103589856A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001086005A1 (en) * | 2000-05-09 | 2001-11-15 | Paul Wurth S.A. | Cooling system for a metallurgical furnace |
| DE10035830A1 (en) * | 2000-07-22 | 2002-02-07 | Reflex Winkelmann & Pannhoff G | Apparatus for cooling exothermally operating production plants, e.g. blast and cupola furnaces, comprises cooling water cycle with cooling water supply container and degassing device for degassing cooling water |
| CN101476805A (en) * | 2008-10-14 | 2009-07-08 | 陕西彩虹电子玻璃有限公司 | Security emergency apparatus of cooling water system |
| CN201501890U (en) * | 2009-08-14 | 2010-06-09 | 重庆钢铁(集团)有限责任公司 | Automatic control system for blast-furnace cooling water |
| CN101694351A (en) * | 2009-09-07 | 2010-04-14 | 青岛科技大学 | Intelligent industrial circulation water-cooling system |
| CN201778067U (en) * | 2010-06-13 | 2011-03-30 | 福建宇星实业有限公司 | Furnace roller cooling system |
| CN201779997U (en) * | 2010-08-31 | 2011-03-30 | 东营方圆有色金属有限公司 | Power failure emergency circulating cooling water replenishing device of metallurgical furnace |
| CN201981574U (en) * | 2010-12-31 | 2011-09-21 | 北京京诚科林环保科技有限公司 | Pressure stabilization and water supplementing device for closed-cycle water system |
| CN102505735A (en) * | 2011-09-26 | 2012-06-20 | 黑龙江建龙钢铁有限公司 | Cooling water supplying device for steelmaking continuous casting equipment |
| CN202990007U (en) * | 2012-12-07 | 2013-06-12 | 广东华鳌合金新材料有限公司 | Improved water supply system for high-temperature alloy production line |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104928446A (en) * | 2014-03-19 | 2015-09-23 | 宝山钢铁股份有限公司 | Furnace door multipath water supply device |
| CN111102840A (en) * | 2019-12-30 | 2020-05-05 | 广西南国铜业有限责任公司 | Smelt bigeminal furnace circulating water system |
| CN111102840B (en) * | 2019-12-30 | 2020-09-15 | 广西南国铜业有限责任公司 | Smelt bigeminal furnace circulating water system |
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Application publication date: 20140219 |