CN203728881U - Multi-area control gas heat treatment furnace - Google Patents
Multi-area control gas heat treatment furnace Download PDFInfo
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- CN203728881U CN203728881U CN201420048932.9U CN201420048932U CN203728881U CN 203728881 U CN203728881 U CN 203728881U CN 201420048932 U CN201420048932 U CN 201420048932U CN 203728881 U CN203728881 U CN 203728881U
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- treatment furnace
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Abstract
The utility model provides a multi-area control gas heat treatment furnace, mainly comprising a plurality of burners which are arranged at the upper part of a heat treatment furnace body, connected with a gas pipeline and used for supplying burning gas, the furnace body is divided into a heat preservation area and a heating area, and the fire intensities of the burners in both the heat preservation area and the heating area are respectively controlled by a PLC (programmable logic controller) to control the heating situation; a smoke exhaust port is arranged at the lower part of the gas heat treatment furnace body, and the smoke exhaust port passes through a heat exchanger via a pipeline and then leads to the outside of a chimney; the heat exchanger is provided with an air inlet and a hot air outlet, the hot air outlet is connected with the burners via an air pipeline, and the heat exchanger is used for preheating air entering the heat exchanger, and sending the air after preheating to the burners for mixing with the burning gas and then burning. By adopting the technical scheme of the utility model, the uniform multi-area furnace temperature control is realized, and the utilization efficiency of heat energy of gas is further improved.
Description
Technical field
The utility model relates to gas furnace field, refers to especially a kind of multi-region control gas heat treatment furnace.
Background technology
Domestic heat treatment furnace used is generally resistance furnace at present, owing to being subject to the impact of voltage stability and the structure formation of electric furnace own, not only consume electric energy serious, and can produce furnace temperature non-uniform phenomenon in resistance furnace heat-processed, will directly affect thermal treatment quality and furnace temperature is inhomogeneous.
Utility model content
The utility model proposes a kind of multi-region control gas heat treatment furnace, realized uniform multi zone furnace temperature control, and improved the utilization efficiency of heat energy of combustion gas.
The technical solution of the utility model is achieved in that
A kind of multi-region control gas heat treatment furnace, its structure comprises:
Its gas heat treatment furnace body top is provided with the burner of some connection gas pipelines, be used for supplying with combustion gases, described body of heater is divided into heat preservation zone and heating zone, in described heat preservation zone and heating zone, be equipped with temperature sensor, pressure transmitter and oxygen level testing sensor, described temperature sensor, pressure transmitter and oxygen level testing sensor are all connected with a PLC control unit signal, are controlled respectively the large and small fire of each district burner to control heating state by described PLC control unit;
Described gas heat treatment furnace body bottom is provided with smoke outlet, and described smoke outlet is discharged by chimney after device for cleaning pipeline is crossed interchanger;
Described interchanger is provided with air intlet and hot air outlet, and described hot air outlet connects burner through air line, and described interchanger is used for the air entering in it to carry out preheating, and the air after preheating is delivered to burner and combustion gases mixing afterfire.
As the optimal way of technique scheme, described interchanger is high-efficient open jet radiation recuperator and/or the insert barrel type heat exchanger of joining.
Owing to adopting multi-region control techniques, on request workpiece is heated to required thermal treatment temp in heating zone, when running to heat preservation zone, workpiece keep this temperature to the specified time, and regulate the stepping rate of workpiece transfer mechanism to ensure required time.
As the preferred implementation of technique scheme, described burner is flat flame temperature-adjusting burner, on the gas pipeline of its connection, be provided with successively the first gas electromagnetic valve, the second gas electromagnetic valve, air-fuel ratio valve, electric operator and flame monitor, jointly form the firing system of gas heat treatment furnace; On the air line connecting at hot air outlet, be provided with burner blower and variable-frequency motor, and air butterfly valve; Air line is connected with air-fuel ratio valve by connecting pipe, and this is in order to regulate the blending ratio of combustion gases and air, and the large and small fire state of burner.
Because smoke outlet is crossed interchanger through device for cleaning pipeline, so the air of the flue gas that contains a large amount of waste heats of being discharged by smoke outlet in can heat exchanger heats, flue gas after heat exchange is just discharged, and can be preheating to 250-300 DEG C through the air of heating in interchanger, it as Sweet natural gas etc. mixes, can reach optimal air-fuel ratio after regulating furnace pressure, burns burner with combustion gases in the best condition.
Flat flame temperature-adjusting burner adopts big fire pulse theory, when big fire state, and air-flow diameter 0.8-1.2 rice after burning, flat flame combustion gas flowing fully stirs the air-flow in stove, strengthening gas circulation and transmission of heat by convection, improve temperature uniformity and heat-transfer effect, shortens heat-up time.Burner is provided with little fiery state, ensures operating safety, and controls temperature variation in stove, improves heat-insulating property; At normal holding stage, burner is in little fire and flameout state.And burner regulation range is large, can, 200-1100 DEG C of range, be applicable to very much thermal treatment wide in variety, the stove that change in process temperature is large uses, burner can realize large and small fire by time scale replace, pulse-combustion, to meet the needs of various Heating temperatures and speed; Good temperature uniformity, has ensured heat treated high quality.
The advantage of technical solutions of the utility model is: adopt multi-region temperature control, make furnace body temperature adjustable; Adopt the burning of flat flame temperature-adjusting burner pulsed, alternately, air-fuel ratio can be controlled between 1.05-1.1 large and small fire, has improved temperature uniformity; The waste heat energy producing in working process is fully recycled, and when the air of process preheating and combustion gas mixing burning, can reach best air-fuel ratio, obtains best combustion efficacy, thereby reduced, the energy scatters and disappears and waste, has reduced production cost.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the utility model multi-region control gas heat treatment furnace;
In figure: 1-gas heat treatment furnace body; 2-burner; 3-smoke outlet; 4-interchanger; 5-air intlet; 6-hot air outlet; 7-chimney; 8-heat preservation zone; 9-heating zone.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, multi-region control gas heat treatment furnace of the present utility model, its structure comprises:
Its gas heat treatment furnace body 1 top is provided with the burner 2 of some connection gas pipelines, be used for supplying with combustion gases, described body of heater is divided into heat preservation zone 8 and heating zone 9, in described heat preservation zone 8 and heating zone 9, be equipped with temperature sensor, pressure transmitter and oxygen level testing sensor, described temperature sensor, pressure transmitter and oxygen level testing sensor are all connected with a PLC control unit signal, are controlled respectively the large and small fire of each district burner to control heating state by described PLC control unit;
Described gas heat treatment furnace body 1 bottom is provided with smoke outlet 3, and described smoke outlet 3 is discharged by chimney 7 after device for cleaning pipeline is crossed interchanger 4;
Described interchanger 4 is provided with air intlet 5 and hot air outlet 6, described hot air outlet 6 connects burner 2 through air line, described interchanger 4 is for the air entering in it is carried out to preheating, and the air after preheating is delivered to burner 2 and combustion gases mixing afterfire.
As the optimal way of technique scheme, described interchanger 4 is high-efficient open jet radiation recuperator and/or the insert barrel type heat exchanger of joining.
Owing to adopting multi-region control techniques, on request workpiece is heated to required thermal treatment temp in heating zone 9, when running to heat preservation zone 8, workpiece keep this temperature to the specified time, and regulate the stepping rate of workpiece transfer mechanism to ensure required time.
As the preferred implementation of technique scheme, described burner 2 is flat flame temperature-adjusting burner, on the gas pipeline of its connection, be provided with successively the first gas electromagnetic valve, the second gas electromagnetic valve, air-fuel ratio valve, electric operator and flame monitor (not shown on figure), jointly form the firing system of gas heat treatment furnace; On the air line connecting at hot air outlet 6, be provided with burner blower and variable-frequency motor, and air butterfly valve; Air line is connected with air-fuel ratio valve by connecting pipe, and this is in order to regulate the blending ratio of combustion gases and air, and the large and small fire state of burner.
Because smoke outlet is crossed interchanger through device for cleaning pipeline, so the air of the flue gas that contains a large amount of waste heats of being discharged by smoke outlet in can heat exchanger heats, flue gas after heat exchange is just discharged, and can be preheating to 250-300 DEG C through the air of heating in interchanger, it as Sweet natural gas etc. mixes, can reach optimal air-fuel ratio after regulating furnace pressure, burns burner with combustion gases in the best condition.
Flat flame temperature-adjusting burner adopts big fire pulse theory, when big fire state, and air-flow diameter 0.8-1.2 rice after burning, flat flame combustion gas flowing fully stirs the air-flow in stove, strengthening gas circulation and transmission of heat by convection, improve temperature uniformity and heat-transfer effect, shortens heat-up time.Burner is provided with little fiery state, ensures operating safety, and controls temperature variation in stove, improves heat-insulating property; At normal holding stage, burner is in little fire and flameout state.And burner regulation range is large, can, 200-1100 DEG C of range, be applicable to very much thermal treatment wide in variety, the stove that change in process temperature is large uses, burner can realize large and small fire by time scale replace, pulse-combustion, to meet the needs of various Heating temperatures and speed; Good temperature uniformity, has ensured heat treated high quality.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. a multi-region control gas heat treatment furnace, is characterized in that, comprising:
Gas heat treatment furnace body top is provided with the burner of some connection gas pipelines, be used for supplying with combustion gases, described body of heater is divided into heat preservation zone and heating zone, in described heat preservation zone and heating zone, be equipped with temperature sensor, pressure transmitter and oxygen level testing sensor, described temperature sensor, pressure transmitter and oxygen level testing sensor are all connected with a PLC control unit signal, are controlled respectively the large and small fire of each district burner to control heating state by described PLC control unit;
Described gas heat treatment furnace body bottom is provided with smoke outlet, and described smoke outlet connects chimney combustion gas after device for cleaning pipeline is crossed interchanger;
Described interchanger is provided with air intlet and hot air outlet, and described hot air outlet connects burner through air line, and described interchanger is used for the air entering in it to carry out preheating, and the air after preheating is delivered to burner and combustion gases mixing afterfire;
Described burner is flat flame temperature-adjusting burner, is provided with successively the first gas electromagnetic valve, the second gas electromagnetic valve, air-fuel ratio valve, electric operator and flame monitor on the gas pipeline of its connection;
On the air line connecting at hot air outlet, be provided with burner blower and variable-frequency motor, and air butterfly valve;
Air line is connected with air-fuel ratio valve by connecting pipe.
2. multi-region control gas heat treatment furnace according to claim 1, is characterized in that:
Described interchanger is high-efficient open jet radiation recuperator and/or the insert barrel type heat exchanger of joining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048932.9U CN203728881U (en) | 2014-01-26 | 2014-01-26 | Multi-area control gas heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048932.9U CN203728881U (en) | 2014-01-26 | 2014-01-26 | Multi-area control gas heat treatment furnace |
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| Publication Number | Publication Date |
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| CN203728881U true CN203728881U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420048932.9U Expired - Fee Related CN203728881U (en) | 2014-01-26 | 2014-01-26 | Multi-area control gas heat treatment furnace |
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| CN (1) | CN203728881U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546572A (en) * | 2016-01-06 | 2016-05-04 | 北京首钢自动化信息技术有限公司 | Automatic control system and method for temperature of combustion section of vertical type annealing furnace |
| CN105627333A (en) * | 2016-03-23 | 2016-06-01 | 苏州金楷科技有限公司 | Tunnel-type sludge roasting equipment and process for treating sludge by virtue of same |
| CN109055681A (en) * | 2018-10-25 | 2018-12-21 | 无锡通用钢绳有限公司 | A kind of Heat Treatment Furnace for Steel Wire |
| CN112626334A (en) * | 2020-12-16 | 2021-04-09 | 无锡腾跃特种钢管有限公司 | Heat treatment process capable of automatically controlling temperature |
| CN112923742A (en) * | 2019-12-06 | 2021-06-08 | 苏州博能炉窑科技有限公司 | Wide-adjustment-ratio heat treatment furnace and control method |
| CN114234628A (en) * | 2021-11-16 | 2022-03-25 | 东风汽车底盘系统有限公司 | Novel energy-saving heating furnace |
| CN115125467A (en) * | 2022-07-12 | 2022-09-30 | 辛集市澳森金属制品有限公司 | Zinc-plating economizer system of utilizing waste heat heating |
-
2014
- 2014-01-26 CN CN201420048932.9U patent/CN203728881U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546572A (en) * | 2016-01-06 | 2016-05-04 | 北京首钢自动化信息技术有限公司 | Automatic control system and method for temperature of combustion section of vertical type annealing furnace |
| CN105546572B (en) * | 2016-01-06 | 2018-03-27 | 北京首钢自动化信息技术有限公司 | A kind of vertical annealing furnace burning zone automatic temperature control system and its method |
| CN105627333A (en) * | 2016-03-23 | 2016-06-01 | 苏州金楷科技有限公司 | Tunnel-type sludge roasting equipment and process for treating sludge by virtue of same |
| CN109055681A (en) * | 2018-10-25 | 2018-12-21 | 无锡通用钢绳有限公司 | A kind of Heat Treatment Furnace for Steel Wire |
| CN112923742A (en) * | 2019-12-06 | 2021-06-08 | 苏州博能炉窑科技有限公司 | Wide-adjustment-ratio heat treatment furnace and control method |
| CN112626334A (en) * | 2020-12-16 | 2021-04-09 | 无锡腾跃特种钢管有限公司 | Heat treatment process capable of automatically controlling temperature |
| CN114234628A (en) * | 2021-11-16 | 2022-03-25 | 东风汽车底盘系统有限公司 | Novel energy-saving heating furnace |
| CN114234628B (en) * | 2021-11-16 | 2024-04-05 | 东风汽车底盘系统有限公司 | Novel energy-saving heating furnace |
| CN115125467A (en) * | 2022-07-12 | 2022-09-30 | 辛集市澳森金属制品有限公司 | Zinc-plating economizer system of utilizing waste heat heating |
| CN115125467B (en) * | 2022-07-12 | 2023-11-28 | 辛集市澳森金属制品有限公司 | Zinc-plating economizer system of utilization waste heat heating |
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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 |
Granted publication date: 20140723 Termination date: 20160126 |
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| EXPY | Termination of patent right or utility model |