CN204085218U - A kind of regenerative gas heater control system - Google Patents
A kind of regenerative gas heater control system Download PDFInfo
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- CN204085218U CN204085218U CN201420542788.4U CN201420542788U CN204085218U CN 204085218 U CN204085218 U CN 204085218U CN 201420542788 U CN201420542788 U CN 201420542788U CN 204085218 U CN204085218 U CN 204085218U
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Abstract
The utility model relates to a kind of regenerative gas heater control system, comprise FPGA device PLC, person-computer union, temperature control instrument, temperature sensor, pressure sensor, solenoid directional control valve, ignition coil, ionic flame detector, alarm; Person-computer union installs operation cabinet panel surface, is connected by RS232 interface communication with programmable controller PLC; Two temperature control instruments are arranged on person-computer union right part, and burner hearth and flue temperature signal are passed through RS485 interface communication to programmable controller PLC.The utility model automaticity is high, operation is accurate, timely and stable, adding controlling alarm can run safer by heating furnace, by the motion of PLC controlling organization, decrease the use of electric components, the simplicity of design of control system internal structure can be made, and the very big result of use of raising system and the heating quality of product.
Description
Technical field
The utility model relates to a kind of Heating Furnace Control technical field, particularly relates to a kind of regenerative gas heater control system.
Background technology
Along with the mankind ask for the uncontrolled of resource such as oil, coal, natural gases, energy crisis becomes more and more severeer, therefore taps a new source of energy and has become the theme of world today's development with economize energy.It is evident that iron and steel metallurgical industry is the main foreigner tourists of power consumption.Wherein consume energy and maximum surely belong to smelting heating furnace, but nowadays the power of heating furnace is not high, not only fuel availability is low, has waste heat to be greatly wasted, and produces the NOx of a large amount of contaminated environment.Therefore, to the reform of heating furnace and innovation be the most important thing of current smelting iron and steel industry energy-saving.China is as fast-developing Chinese Home, more and more large to energy demand, and the minimizing of energy resource supply in simultaneous world wide utilizes low calorie fuels just to seem very important with the pre-recuperation of heat carrying out waste gas effectively and rationally.In recent years, along with the development of regenerative combustion technology, in smelting and heating, there is significant raising to the utility ratio of low calorie fuels with to the heat recovery rate of waste gas.Heating furnace is applied regenerative gas combustion technology progressively realize, and fast-developing.Regenerative combustion technology is the popular call of high-temperature air burning (High Temperature Air Combustion-HTAC) technology, its principle is the heat accumulation effect by heat storage, obtain the air (or coal gas) of high temperature preheating, with the waste heat in recovered flue gas to greatest extent.
At present, recuperative heater at economize energy, improve output, improve in heating quality etc. and have very large advantage, but accumulation of heat heating technique is not also very ripe, the problems such as the general power consumption of combustion process is high, environmental pollution is serious, temperature control precision is poor, automaticity is low, the problems such as operative employee's labour intensity is large.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of regenerative gas heater control system, improves heating quality, make heating-up temperature comparatively even, a kind of regenerative gas heater control system of the utility model specific design.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of regenerative gas heater control system, comprises a master control FPGA device PLC, person-computer union, two temperature control instruments, temperature sensor, pressure sensor, solenoid directional control valve, ignition coil, ionic flame detector, alarm.It is inner that described programmable controller PLC is arranged on operation cabinet;
Described person-computer union is arranged on operation cabinet panel surface;
Described temperature sensor is arranged in burner hearth and in flue respectively;
Described two temperature control instruments are arranged on operation cabinet panel surface, touch-screen right part;
Described pressure sensor is arranged on the inner furnace roof of burner hearth;
The output of described device PLC processed able to programme installs solenoid directional control valve, ignition coil, alarm and fiery position indicator lamp.
Described solenoid directional control valve to be arranged in air duct, flue and gas pipeline in each pipeline respectively.
Described temperature sensor be arranged in burner hearth for thermocouple temperature sensor, in flue is thermal resistance sensor.
Described person-computer union is connected by RS232 interface communication with programmable controller PLC, simultaneously by the duty of configuration Soft-ware programme monitoring heating furnace, also the running parameter that programmable controller PLC adjusts heating furnace can be set by person-computer union.
Described two temperature control instruments are used for gathering the signal of temperature sensor in burner hearth and flue, and will process the temperature signal that obtains by RS485 interface communication to programmable controller PLC.
Described solenoid directional control valve is two-way valve, controls its switch by device PLC processed able to programme.
Whether described fiery position indicator lamp is used to refer to each burner and burns.
The course of work of the present utility model is as follows:
A kind of regenerative gas heater control system, purges, and PLC makes air blast, air-introduced machine be sent by residual combustion gases in burner hearth in the forced draft induced draft work that hockets of left and right burner by control air reversing valve; Igniting, open little fiery valve, and control point fire coil realizes the automatic control of ignition function by PLC, and by ionic flame detector, whether successfully firing information is flowed to PLC to judge igniting; Commutation, corresponding big fire gas valve and air reversing valve is regulated to carry out by PLC, according to the working time of person-computer union setting in work, control left and right burner switch operating state, the first big fire valve of side, air reversing valve opens i.e. left side burner heating the right burner smoke evacuation, entered by after touch-screen setting-up time, big fire valve, air reversing valve is closed, the big fire valve of opposite side, air reversing valve opens left and right burner switch operating state; Temperature regulates,, by temperature sensor, the temperature signal detected is flowed to PLC, PLC carries out corresponding control to furnace temperature, comprise insulation and intensification control two kinds, if the temperature that the temperature sensor in burner hearth detects exceedes the temperature upper limit of setting, then PLC sends instruction and controls to cut off all gas valves and air reversing valve and be incubated, if if the temperature that the temperature sensor in insulating process in burner hearth detects exceedes the lowest temperature of setting, then control corresponding gas valve and air reversing valve enters into heating process.
The beneficial effects of the utility model are:
Automaticity is high, operation is accurate, timely and stable, adding controlling alarm can run safer by heating furnace, by the motion of PLC controlling organization, decreases the use of electric components, the simplicity of design of control system internal structure can be made, decrease the workload of design, layout is attractive in appearance, and wiring is simple, maintenance is easy, and the very big result of use of raising system and the heating quality of product.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of regenerative gas heater control system of the utility model.
Fig. 2 is the schematic flow sheet of a kind of regenerative gas heater control system of the utility model.
1 ionic flame detector in figure, 2 little fiery gas valves, 3 big fire gas valves, 4 air reversing valves, 5 air reversing valves, 6 thermocouple temperature sensors, 7 little fiery gas valves, 8 big fire gas valves, 9 air reversing valves, 10 air reversing valves, 11 thermal resistance temperature sensors, 12 ignition coils, 13 programmable controller PLC, 14 person-computer union, 15 temperature control instruments, 16 pressure sensors, 17 alarms, a 18 fire indicator lamp.
Detailed description of the invention
Under by reference to the accompanying drawings the utility model is described in detail:
A kind of regenerative gas heater control system, comprises a master control FPGA device PLC13, person-computer union 14, two temperature control instruments 15, temperature sensor 6,11, pressure sensor 16, solenoid directional control valve, ignition coil 12, ionic flame detector 1, alarm 17.
It is inner that described master control FPGA device PLC13 is arranged on operation cabinet, that select is OMRON CP1E, module integration is high, volume is little, the CPU speed of service is fast, memory is well-to-do, soft element scope is enriched, and can carry out expansion input, exports and communication by plug-in mounting expansion module.
Described person-computer union 14 installs operation cabinet panel surface, be connected by RS232 interface communication with programmable controller PLC 13, simultaneously by the duty of configuration Soft-ware programme monitoring heating furnace, also the running parameter that programmable controller PLC 13 adjusts heating furnace can be set by person-computer union 14.What man-machine interface touch 14 screen was selected is the embedded integrated touch-screen of the Kunlun on-state TPC7062KX type, compiles man-machine interface by EB8000.
Described temperature sensor, is arranged in hearth wall and flue respectively, be arranged on hearth wall for thermocouple temperature sensor 6, being arranged in flue is thermal resistance temperature sensor 11.S type thermocouple selected by the temperature sensor of burner hearth, this is because fire box temperature is up to 1200 DEG C, S type thermocouple measurement scope-50 DEG C ~+1700 DEG C, good physics, chemical property make it have thermoelectrical potential stability and at high temperature non-oxidizability, are applicable in oxidisability and inert atmosphere; Pt100 temperature sensor selected by sensor in flue, this is because flue temperature is not higher than 150 DEG C, its measurement category is-200 DEG C ~+800 DEG C, and it is the highest that this model thermocouple has the degree of accuracy, and stability is best, measures wide temperature region, the advantages such as long service life.
Described two temperature control instruments 15 are arranged on operation cabinet panel surface, the right part of touch-screen, the AI-500 type intelligent measuring alarming instrument that temperature control instrument 15 is selected, programmable modularized input, adopt single four display pannels, support nearly four road warning functions, possess figure adjustment, digital filtering and thermocouple cold junction automatic compensation function, support RS485 communication interface function, the functions such as output are sent in support temperature change; In addition, temperature control instrument 15 is used for gathering the signal of temperature sensor 6,11 in burner hearth and flue, and will process the temperature signal that obtains by RS485 interface communication to programmable controller PLC 13.
Described pressure sensor 16 is arranged on the inner furnace roof of burner hearth.
The output of described device PLC13 processed able to programme is provided with solenoid directional control valve, ignition coil 12 and alarm 17 and fiery position indicator lamp 18.
Described solenoid directional control valve is two-way valve, is arranged on respectively in air duct, flue and gas pipeline in each pipeline, and controls its switch by programmable controller PLC 13.
Whether described fiery position indicator lamp 18 is used to refer to each burner and burns.
The course of work is as follows:
As shown in Figure 1, a kind of regenerative gas heater control system, purges, and programmable controller PLC 13 makes air blast, air-introduced machine be sent by residual combustion gases in burner hearth in the forced draft induced draft work that hockets of left and right burner by controlling air reversing valve 4,5,9,10, igniting, open little fiery valve 2,7, and control point fire coil 12 realizes the automatic control of ignition function by programmable controller PLC, and by ionic flame detector 1, whether successfully firing information is flowed to PLC to judge igniting, commutation, corresponding big fire gas valve 3,8 and air reversing valve 4,5,9,10 is regulated to carry out by programmable controller PLC, according to the working time of touch-screen setting in work, control left and right burner switch operating state, first big fire valve 3, air reversing valve 4,10 opens i.e. left side burner heating the right burner smoke evacuation, entered by after person-computer union 14 setting-up time, big fire valve 3, air reversing valve 4,10 is closed, big fire valve 8, air reversing valve 5,9 opens left and right burner switch operating state, temperature regulates, by thermocouple temperature sensor 6, the temperature signal detected is flowed to programmable controller PLC, corresponding adjustment is carried out to furnace temperature, comprise insulation and heat up two kinds, if the temperature that the temperature sensor in burner hearth detects exceedes the temperature upper limit of setting, then programmable controller PLC sends instruction and cuts off all gas valves 2, 3, 7, 8 and air reversing valve 4, 5, 9, 10 are incubated, if the temperature that in insulating process, thermocouple temperature sensor 6 detects exceedes the lowest temperature (being set by touch-screen) of setting, then regulate corresponding gas valve 2, 3, 7, 8 and air reversing valve 4, 5, 9, 10 enter into heating process.
It should be noted last that, above detailed description of the invention is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to example, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. a regenerative gas heater control system, is characterized in that: comprise a FPGA device PLC, one piece of touch-screen, two temperature control instruments, temperature sensor, pressure sensor, solenoid directional control valve, ignition coil, ionic flame detector, alarm;
It is inner that described programmable controller PLC is arranged on operation cabinet;
Described person-computer union is arranged on operation cabinet panel surface;
Described temperature sensor is arranged in burner hearth and in flue respectively;
Described two temperature control instruments are arranged on operation cabinet panel surface, touch-screen right part;
Described pressure sensor is arranged on the inner furnace roof of burner hearth;
The output of described device PLC processed able to programme installs solenoid directional control valve, ignition coil, alarm and fiery position indicator lamp;
Described solenoid directional control valve is arranged in the pipeline of air duct, flue and gas pipeline respectively.
2. a kind of regenerative gas heater control system as claimed in claim 1, is characterized in that: described person-computer union is connected by RS232 interface communication with programmable controller PLC.
3. a kind of regenerative gas heater control system as claimed in claim 1, is characterized in that: described temperature sensor be arranged in burner hearth for thermocouple temperature sensor, in flue is thermal resistance sensor.
4. a kind of regenerative gas heater control system as claimed in claim 1, is characterized in that: the temperature signal of burner hearth and flue is passed through RS485 interface communication to programmable controller PLC by described two temperature control instruments.
5. a kind of regenerative gas heater control system as claimed in claim 1, is characterized in that: described solenoid directional control valve is two-way valve, controls its switch by device PLC processed able to programme.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420542788.4U CN204085218U (en) | 2014-09-19 | 2014-09-19 | A kind of regenerative gas heater control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420542788.4U CN204085218U (en) | 2014-09-19 | 2014-09-19 | A kind of regenerative gas heater control system |
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| Publication Number | Publication Date |
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| CN204085218U true CN204085218U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420542788.4U Expired - Fee Related CN204085218U (en) | 2014-09-19 | 2014-09-19 | A kind of regenerative gas heater control system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197732A (en) * | 2014-09-19 | 2014-12-10 | 济南大学 | Regenerative gas heating furnace control system |
| CN105423766A (en) * | 2015-12-02 | 2016-03-23 | 安徽马钢重型机械制造有限公司 | Method for preventing overtemperature of heating furnace under DCS control |
| CN106287670A (en) * | 2015-06-05 | 2017-01-04 | 江苏腾天工业炉有限公司 | Energy-efficient recuperative heater |
| CN107781840A (en) * | 2016-08-31 | 2018-03-09 | 江苏禹能环保设备有限公司 | A kind of regenerative gas heating system |
| CN108330272A (en) * | 2018-01-19 | 2018-07-27 | 山东钢铁集团日照有限公司 | A kind of single Regeneratiue billet reheating furnace using blast furnace gas |
| CN109751886A (en) * | 2017-11-08 | 2019-05-14 | 孙学贤 | A kind of direct current channel regenerative apparatus and its working principle |
-
2014
- 2014-09-19 CN CN201420542788.4U patent/CN204085218U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197732A (en) * | 2014-09-19 | 2014-12-10 | 济南大学 | Regenerative gas heating furnace control system |
| CN104197732B (en) * | 2014-09-19 | 2016-04-06 | 济南大学 | A kind of regenerative gas heater control system |
| CN106287670A (en) * | 2015-06-05 | 2017-01-04 | 江苏腾天工业炉有限公司 | Energy-efficient recuperative heater |
| CN105423766A (en) * | 2015-12-02 | 2016-03-23 | 安徽马钢重型机械制造有限公司 | Method for preventing overtemperature of heating furnace under DCS control |
| CN107781840A (en) * | 2016-08-31 | 2018-03-09 | 江苏禹能环保设备有限公司 | A kind of regenerative gas heating system |
| CN109751886A (en) * | 2017-11-08 | 2019-05-14 | 孙学贤 | A kind of direct current channel regenerative apparatus and its working principle |
| CN108330272A (en) * | 2018-01-19 | 2018-07-27 | 山东钢铁集团日照有限公司 | A kind of single Regeneratiue billet reheating furnace using blast furnace gas |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20170919 |