CN103526003B - Heat-controllable tubular gas heat treatment furnace - Google Patents

Heat-controllable tubular gas heat treatment furnace Download PDF

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Publication number
CN103526003B
CN103526003B CN201310463250.4A CN201310463250A CN103526003B CN 103526003 B CN103526003 B CN 103526003B CN 201310463250 A CN201310463250 A CN 201310463250A CN 103526003 B CN103526003 B CN 103526003B
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heat
furnace
gas
heat treatment
gravity assisted
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CN103526003A (en
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招玉春
许晓静
陈树东
王宏宇
王伟
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Nantong Haitai Kete Precision Material Co., Ltd.
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Jiangsu University
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Abstract

A heat-controllable tubular gas heat treatment furnace is characterized in that the heat-controllable tubular gas heat treatment furnace comprises a gas furnace (1) and a heat treatment furnace (12), one end of the heat treatment furnace (12) is supported on the gas furnace (1), the other end of the heat treatment furnace (12) is supported on a support (17), a condensation end at the upper ends of gravity assisted heat tubes is positioned in the heat treatment furnace (12) to heat the hearth of the heat treatment furnace (12), and an evaporation end at the lower end of a straight tube type gravity assisted heat tube traverses through the furnace walls of the heat treatment furnace (12) and the gas furnace (1), is positioned in the gas furnace (1) and is used for absorbing heat generated by the gas furnace (1); and the gas furnace (1) and the heat treatment furnace (12) are respectively connected with a ventilation unit for realizing the uniformity of the respective internal temperature. The heat-controllable tubular gas heat treatment furnace has the advantages of simple structure, flexible heat supply mode, utilization of all waste heats, energy saving, environmental protection and simple making process, and can be widely applied in the current industrial production.

Description

Controlled thermal pipe type gas heat treatment furnace
Technical field
The present invention relates to a kind of heat treatment furnace, especially a kind of heat treatment furnace not using electric energy, specifically a kind of fuel gas buring can be utilized to produce heat energy or industrial gaseous waste heat energy controlled thermal pipe type gas heat treatment furnace that heat treatment furnace is heated.
Background technology
As everyone knows, thermal treatment is a very important procedure during metallic element is produced, and modern industry produce to the accurate control of heat treated working efficiency, thermal treatment temp and energy-conservation requirement more and more higher.The component of mechanical industry 70% need to heat-treat, the component of automobile, tractor industry 70%-80% need to heat-treat processing, instrument, cutlery and bearing products then 100% needs are heat-treated, even if the work-ing life of some civilian light industry metal productss, the overwhelming majority also relies on thermal treatment to be improved.And Investment in fastener industry, bearing industry, chain industry, tool industry, automobile, tractor, motorcycle component industry are all come competitive market by thermal treatment quality.Along with industrial expansion was predicted in 10 years, 40-50 ten thousand t is had to increase hot-work amount newly every year, and now heat treatment furnace is on the market main mainly with hot resistance heat form greatly, very big to the demand of power consumption, be the high industrial production that consumes energy, really do not meet the call of the low-carbon environment-friendly that the world today advocates.And domestic electrical to supply mainly coal fired power generation be main, heat energy is that electric energy efficiency is not high, and electric energy also has very lossy in the transmission, when electric energy is supplied to the hot resistance heating of heat treatment furnace the most at last, also can loss.
For above-mentioned defect, measure of today is generally the improvement carrying out or several, does not get on to solve the problem of heat treatment furnace from source.In view of the above problems, the present invention changes the hot resistance heat-supplying mode of prior heat treatment stove, hot resistance is substituted to heat treatment furnace heat supply with heat pipe, energy structure also uses Sweet natural gas or the alternative electric energy such as coal gas and industrial high temperature waste gas, both improve the utilising efficiency of the energy, also can carry out large-scale industrial production.
Summary of the invention
The efficiency that the object of the invention is mostly to use electric energy to cause as heating energy source for existing heat treatment furnace is low, and consume energy large problem, designs a kind of controlled thermal pipe type gas heat treatment furnace that can directly utilize gas thermal energy or industrial gaseous waste heat energy to carry out heating.
Technical scheme of the present invention is:
A kind of controlled thermal pipe type gas heat treatment furnace, it is characterized in that it is made up of gas furnace 1 and heat treatment furnace 12, one end of heat treatment furnace 12 is bearing on gas furnace 1, the other end is bearing on support 17, the condensation end of gravity assisted heat pipe upper end is arranged in heat treatment furnace 12 for heating the burner hearth of heat treatment furnace 12, and the evaporation ends of straight pipe type gravity assisted heat pipe lower end is positioned at through the furnace wall of heat treatment furnace 12 and gas furnace 1 heat that gas furnace 1 produces for absorbing gas furnace 1; Described gas furnace 1 and heat treatment furnace 12 are all connected with and make the uniform ventilation plant of its internal temperature.
Described gravity assisted heat pipe is made up of high temperature gravity assisted heat pipe 9, middle temperature gravity assisted heat pipe 23 and low temperature gravity assisted heat pipe 24, middle temperature gravity assisted heat pipe 23 and low temperature gravity assisted heat pipe 24 are arranged in one end of gas furnace 1 all by the combustion chamber of respective insulated door 25 with gas furnace 1, insulated door 25 is controlled by temperature regulator, when temperature in gas furnace 1 is greater than the working temperature of middle temperature gravity assisted heat pipe 23, the insulated door of middle temperature gravity assisted heat pipe 23 and low temperature gravity assisted heat pipe 24 is all closed, and the insulated door of low temperature gravity assisted heat pipe 24 is only just opened lower than during its working temperature at combustion gas in-furnace temperature.
Described gravity assisted heat pipe be finned, without the gravity assisted heat pipe of wick.
Be provided with in the gas inlet pipe 19 of described gas furnace 1, air intake duct 21 and waste gas exhaust pipe 20 finned for the bending type of heat recuperation, without the gravity assisted heat pipe of wick.
The high-temp waste gas that described gas furnace 1 directly passes into heat power station or waste incineration is the evaporator section heat supply of the straight pipe type gravity assisted heat pipe inserted in its burning chamber.
Beneficial effect of the present invention:
1. controlled thermal pipe type gas heat treatment furnace of the present invention, hot resistance is not adopted to heat, but utilize the heat pipe with efficient heat transfer performance as the transmission medium of thermal source, heat up to heat treatment furnace heat supply, change the type of heating of heat treatment furnace, fundamentally solve the highly energy-consuming problem of heat treatment furnace now.
2. the thermal source of heat treatment furnace of the present invention, has multiple heat-supplying mode, as adopted the mode of Sweet natural gas and air mixed combustion heating, high-temp waste gas also can be adopted to carry out heat supply, decrease the use of electric energy, reduce costs, low-carbon environment-friendly, can be widely used in large scale industry and produce.What is more important, owing to have employed hot pipe technique heat transfer, decreases the quality problems of the thermal treatment part directly adopting gas heating to cause, and reduces production cost relative to electrically heated.
3. the present invention proposes the principle that high-temperature heat pipe, moderate temperature heat pipe and normal temperature heat pipe mix and match use, farthest profit heat, does not allow heat waste, improves heat conducting efficiency; Three types heat pipe adopts gradient heat transfer principle, collaborative work, and every class heat pipe is all one section of temperature range work, has both improve the working efficiency of heat pipe, and has ensured that again it worked in safe temperature range.
4. adopting heat pipes for heat transfer system of the present invention, the heat pipe of employing belongs to gravity assisted heat pipe, also claims two-phase closed type hot siphon, adopting heat pipes for heat transfer system adopts the gravity assisted heat pipe without wick, greatly can reduce costs, heat anti-pass in heat treatment furnace also can be prevented to gas furnace, cause the loss of heat.
5. controlled thermal pipe type gas heat treatment furnace of the present invention, adopts blower fan to accelerate the flowing of furnace air, improves the heat absorption of adopting heat pipes for heat transfer system finned tube and the efficiency of heat radiation with this.
6. controlled thermal pipe type gas heat treatment furnace of the present invention, the heat pipe reliability of use is high, greatly can extend the work-ing life of body of heater.Single heat pipe in the heat-exchange equipment be made up of heat pipe bundle damages the heat exchange impact of equipment little, and normally run even if the damage of part heat pipe also can not affect equipment, working reliability is high.
7. controlled thermal pipe type gas heat treatment furnace of the present invention, effectively can make the heat pipe collaborative work of three types by the design of insulated door, both avoided heat pipe and exceeded the damage caused in its working temperature interval, and turn improved the working efficiency of heat pipe.
8. controlled thermal pipe type gas heat treatment furnace of the present invention, structure is simple, manufacturing cost relative moderate; Waste gas residual heat can be utilized, energy-conserving and environment-protective; Reliability is high; Can be applicable to large-scale metal parts thermal treatment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
In figure: 1 gas furnace; 12 heat treatment furnaces; 19 fuel gas inlet; 21 air intlets; 20 waste gas outlets; 2,3,4 special-shaped gravity assisted heat pipes (with finned tube), wherein 2 high-temperature heat pipes, 3 moderate temperature heat pipes, 3 normal temperature heat pipes; 9,23,24 long and straight type gravity assisted heat pipes (with finned tube), wherein 9 high-temperature heat pipes, 23 moderate temperature heat pipes, 24 normal temperature heat pipes; 17,18 stove supports; 6,16 blower fans (high-temperature resistant fan); 8,15 high temperature resistant blades; 5,11 temperature measuring equipments; 22 draught dampers; 13 pulleys; 14 lift sliding gates; 25 insulated door positions (insulated door not shown in FIG. can adopt prior art self design); 7 steel plates; 10 pure aluminium silicate thermal insulation layers; 26 refractory brick.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As Figure 1-3.
A kind of controlled thermal pipe type gas heat treatment furnace, it is made up of gas furnace 1 and heat treatment furnace 12, as shown in Figure 1, one end of heat treatment furnace 12 is bearing on gas furnace 1, the other end is bearing on support 17, gas furnace 1 directly can be bearing in ground, also can support on mount 18, the condensation end of gravity assisted heat pipe upper end is arranged in heat treatment furnace 12 for heating the burner hearth of heat treatment furnace 12, and the evaporation ends of straight pipe type gravity assisted heat pipe lower end is positioned at through the furnace wall of heat treatment furnace 12 and gas furnace 1 heat that gas furnace 1 produces for absorbing gas furnace 1, described gas furnace 1 and heat treatment furnace 12 are all connected with and make the uniform ventilation plant of its internal temperature, the ventilation plant of gas furnace is made up of blower fan 16 and high temperature resistant blade 15, assembling is outside body of heater, high temperature resistant blade is arranged in gas furnace hearth, the ventilation plant of heat treatment furnace is made up of blower fan 6 and high temperature resistant blade 7, blower fan 6 is positioned at outside burner hearth, high temperature resistant blade 7 is arranged on to be held in process burner hearth, in order to provide foundation to temperature control unit, temperature measuring equipment 11(temperature sensor is installed in heat treatment furnace), temperature measuring equipment 5(temperature sensor is installed) in gas furnace.During concrete enforcement, in order to improve the work-ing life of gravity assisted heat pipe, gravity assisted heat pipe adopts high temperature gravity assisted heat pipe 9, the array mode of middle temperature gravity assisted heat pipe 23 and low temperature gravity assisted heat pipe 24, as shown in Figure 3, high temperature gravity assisted heat pipe 9, middle temperature gravity assisted heat pipe 23 and low temperature gravity assisted heat pipe 24 all adopt finned, without the gravity assisted heat pipe of wick, middle temperature gravity assisted heat pipe 23 and low temperature gravity assisted heat pipe 24 are arranged in one end of gas furnace 1 all by the combustion chamber of respective insulated door 25 with gas furnace 1, insulated door 25 is controlled by temperature regulator, when temperature in gas furnace 1 is greater than the working temperature of middle temperature gravity assisted heat pipe 23, the insulated door of middle temperature gravity assisted heat pipe 23 and low temperature gravity assisted heat pipe 24 is all closed, the insulated door of low temperature gravity assisted heat pipe 24 is only just opened lower than during its working temperature at combustion gas in-furnace temperature.In order to improve energy utilization liquid, be provided with in the gas inlet pipe 19 of described gas furnace 1, air intake duct 21 and waste gas exhaust pipe 20 finned for the bending type of heat recuperation, without the gravity assisted heat pipe of wick, as shown in Figure 2.In addition, the high-temp waste gas that described gas furnace 1 directly passes into heat power station or waste incineration is the evaporator section heat supply of the straight pipe type gravity assisted heat pipe inserted in its burning chamber.
Details are as follows:
As Figure 1-3, controlled thermal pipe type gas heat treatment furnace of the present invention, comprise gas furnace 1, heat treatment furnace 12, adopting heat pipes for heat transfer system 2,3,4,9,23,24, temp testing controlling system (not shown in FIG.).Described gas furnace 1 is made up of fuel gas inlet 19, air intlet 21, waste gas outlet 20, gravity assisted heat pipe 2,3,4,9,23,24, all the other two draught dampers of blower fan 16, temperature measuring equipment 5 and draught damper 22(do not mark) form; Heat treatment furnace 12 is made up of gravity assisted heat pipe 9/23/24, temperature measuring equipment 11, blower fan 6 and lift sliding gate 14.
Sweet natural gas enters gas furnace by pipeline by import 19, and air is sent in stove through pipeline by import 21, and the two mixes mutually through ignition device burning, and its flow velocity and flow can by respective Valve controlling; Resisting blower 16 works, and both can facilitate combustion gas and air mixed, the heat that burning produces can be passed to finned tube fast again; Finned tube passes to gravity assisted heat pipe 9 by absorbing the heat come, and in gravity assisted heat pipe 9, the liquid heat absorption of evaporator section produces high-temperature steam, and high-temperature steam rises to gravity assisted heat pipe 9 condensation segment place heat radiation in heat treatment furnace, and heat is passed to fin by heat pipe; Resisting blower 6 works and accelerates the heat radiation of finned tube, and the temperature accelerated in heat treatment furnace is tending towards even; The use of gravity assisted heat pipe make heat in heat treatment furnace can not anti-pass to roasting kiln, the loss of heat can not be caused.Lift sliding gate 14 good airproof performance of heat treatment furnace, heat preservation and insulation is excellent and switch is convenient.
The waste gas of discharging in roasting kiln belongs to high-temperature gas, absorb heat successively respectively through the gravity assisted heat pipe of waste gas outlet 20 by high-temperature heat pipe 2, moderate temperature heat pipe 3, normal temperature heat pipe 4 three types, then by heat pipe, heat is passed to combustion gas and preheating of air, three types heat pipe adopts gradient heat transfer principle, collaborative work, and every class heat pipe is all one section of temperature range work, both improve the working efficiency of heat pipe, ensured again that it worked in safe temperature range; The spent air temperture that final gas furnace is discharged in air will drop to about 100 degree.Wherein, high-temperature heat pipe 2,9 adopts sodium stainless steel tube, and operating temperature range is at 500-1200 DEG C; Moderate temperature heat pipe 3,23 adopts mercury austenitic stainless steel pipe operating temperature range at 250-650 DEG C; Normal temperature heat pipe 4,24 adopts water carbon steel pipe, and operating temperature range is at 30-250 DEG C.
Temp testing controlling system can adopt routine techniques to be realized, it can according to the temperature of the temperature in roasting kiln 1, heat treatment furnace 12 and setting, control moderate temperature heat pipe 23 and normal temperature heat pipe 24 evaporator section insulated door 25(insulated door and only marked position in the drawings) switch, the draught damper 22 that also can control combustion gas and air intlet opens and closes and uninterrupted; If the temperature in roasting kiln 1 exceedes the working range of moderate temperature heat pipe 23 or normal temperature heat pipe 24, the insulated door 25 of corresponding evaporator section will be closed, and doing so avoids the damage of heat pipe; Once combustion gas in-furnace temperature is no more than the work upper limit of moderate temperature heat pipe 23 or normal temperature heat pipe 24, now open insulated door, both improve adopting heat pipes for heat transfer efficiency, take full advantage of again the surplus heat in stove.In gas furnace, the evaporator section of high-temperature heat pipe does not design insulated door herein, and the condensation segment of thermal treatment furnace high-temperature, middle gentle normal temperature heat pipe does not all design insulated door, and the insulated door of moderate temperature heat pipe and normal temperature heat pipe evaporator section separates.
Treatment furnace structure of the present invention is simple, uses novel heat pipe supplying heat mode, can improve the weak point of electric heat treating furnace now, be applied in heat treatment industry and can save a large amount of energy, have wide application prospect.
Gas furnace of the present invention is the combustion chamber of a combustion gas and air mixed burning, and combustion gas can be the inflammable gas such as Sweet natural gas or coal gas; Described heat treatment furnace is one by the heat treatment furnace of high temperature, middle temperature, normal temperature three types heat pipe supplying heat; Described temp testing controlling system is a program controller, can temperature in Real-Time Monitoring gas furnace and heat treatment furnace, then according to the temperature of user's setting, automatically regulates the switch of moderate temperature heat pipe and normal temperature heat pipe evaporator section insulated door, controls the work of heat pipe; Described adopting heat pipes for heat transfer system is the gravity assisted heat pipe of a band finned tube, is made up of the gravity assisted heat pipe of high temperature, middle temperature, normal temperature three types.Heat pipe of the present invention passes warm system and is made up of the gravity assisted heat pipe of the band finned tube of high temperature, middle temperature, low temperature three types, and the heat pipe of every type all forms a heat pipe bundle by many heat pipes, and its radical calculates according to the size of body of heater and rate of heat transfer; Moderate temperature heat pipe in gas furnace or normal temperature heat pipe have an insulated door to be connected with body of heater, are controlled the work of heat pipe by the switch of insulated door; By design temperature and real time temperature measurement, controlled the heat pipe bundle work of which kind of type by temp testing controlling system.Heat treatment furnace can meet the temperature from room temperature to more than 1000 DEG C scopes, realizes the continuous heat treatment from low temperature to high temperature; Change the working medium of high-temperature heat pipe, even can realize ultrahigh-temperature thermal treatment.Adopting heat pipes for heat transfer system comprises the gravity assisted heat pipe of two kinds of structure types, and one is long and straight type gravity assisted heat pipe 9,23,24, as Fig. 3; Another is bending type gravity assisted heat pipe 2,3,4, as Fig. 2, belongs to special-shaped gravity assisted heat pipe.Adopt the gravity assisted heat pipe without wick, not only can reduce costs, and can not waste energy, the heat in heat treatment furnace cannot be passed in gas furnace.Gas furnace heat supply can use the high-temp waste gas heat supply of heat power station and waste incineration.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.

Claims (4)

1. a controlled thermal pipe type gas heat treatment furnace, it is characterized in that it is made up of gas furnace (1) and heat treatment furnace (12), one end of heat treatment furnace (12) is bearing on gas furnace (1), the other end is bearing on support (17), the condensation end of straight pipe type gravity assisted heat pipe upper end is arranged in heat treatment furnace (12) for heating the burner hearth of heat treatment furnace (12), and the evaporation ends of straight pipe type gravity assisted heat pipe lower end is arranged in through the furnace wall of heat treatment furnace (12) and gas furnace (1) heat that gas furnace (1) produces for absorbing gas furnace (1), described gas furnace (1) and heat treatment furnace (12) are all connected with and make the uniform ventilation plant of its internal temperature, described straight pipe type gravity assisted heat pipe is by high temperature gravity assisted heat pipe (9), middle temperature gravity assisted heat pipe (23) and low temperature gravity assisted heat pipe (24) composition, middle temperature gravity assisted heat pipe (23) and low temperature gravity assisted heat pipe (24) are arranged in one end of gas furnace (1) all by the combustion chamber of respective insulated door (25) with gas furnace (1), insulated door (25) is controlled by temperature regulator, when temperature in gas furnace (1) is greater than the working temperature of middle temperature gravity assisted heat pipe (23), the insulated door of middle temperature gravity assisted heat pipe (23) and low temperature gravity assisted heat pipe (24) is all closed, the insulated door of low temperature gravity assisted heat pipe (24) is only just opened lower than during its working temperature at combustion gas in-furnace temperature.
2. controlled thermal pipe type gas heat treatment furnace according to claim 1, it is characterized in that described straight pipe type gravity assisted heat pipe be finned, without the gravity assisted heat pipe of wick.
3. controlled thermal pipe type gas heat treatment furnace according to claim 1, is characterized in that being provided with in the gas inlet pipe (19) of described gas furnace (1), air intake duct (21) and waste gas exhaust pipe (20) bending type for heat recuperation finned or without the gravity assisted heat pipe of wick.
4. controlled thermal pipe type gas heat treatment furnace according to claim 1, is characterized in that high-temp waste gas that described gas furnace (1) directly passes into heat power station or waste incineration is the evaporator section heat supply of the straight pipe type gravity assisted heat pipe inserted in its burning chamber.
CN201310463250.4A 2013-10-08 2013-10-08 Heat-controllable tubular gas heat treatment furnace Active CN103526003B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111121022B (en) * 2019-12-31 2021-08-24 西安交通大学 Low-nitrogen gas burner based on heat pipe heat exchange

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CN2578734Y (en) * 2002-11-05 2003-10-08 北京科技大学 Coal furnace with thermal conductive oil as heat carrier
CN1896673A (en) * 2006-06-20 2007-01-17 青岛大学 Controllable bi-circulating hot-pipe system
CN201245684Y (en) * 2008-08-27 2009-05-27 常州科恒炉业有限公司 Trolley type gas heat processing furnace
CN101586918A (en) * 2009-06-24 2009-11-25 哈尔滨金鑫电气有限责任公司 The multi-stage waste heat recovery device of industrial furnace high-temperature flue gas
CN101672493A (en) * 2008-09-13 2010-03-17 陈绍勇 Hot water supply system device with solar energy metal honeycomb collection, instantaneous water heating of superconducting pipe
CN101865619A (en) * 2010-06-01 2010-10-20 宁波福威克能源科技有限公司 Independent heat tube energy-saving heating/heat exchange system special for spray coating/spray lacquer production line
CN202747816U (en) * 2012-07-09 2013-02-20 江西镗钰窑炉技术开发有限公司 Energy saving device with heat exchange system on aluminum melting furnace by heat pipe technology

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2414348Y (en) * 2000-01-25 2001-01-10 吴江市普天热管技术推广应用研究所 Oil (gas) combustion heat-pipe hot-blast stove
CN2578734Y (en) * 2002-11-05 2003-10-08 北京科技大学 Coal furnace with thermal conductive oil as heat carrier
CN1896673A (en) * 2006-06-20 2007-01-17 青岛大学 Controllable bi-circulating hot-pipe system
CN201245684Y (en) * 2008-08-27 2009-05-27 常州科恒炉业有限公司 Trolley type gas heat processing furnace
CN101672493A (en) * 2008-09-13 2010-03-17 陈绍勇 Hot water supply system device with solar energy metal honeycomb collection, instantaneous water heating of superconducting pipe
CN101586918A (en) * 2009-06-24 2009-11-25 哈尔滨金鑫电气有限责任公司 The multi-stage waste heat recovery device of industrial furnace high-temperature flue gas
CN101865619A (en) * 2010-06-01 2010-10-20 宁波福威克能源科技有限公司 Independent heat tube energy-saving heating/heat exchange system special for spray coating/spray lacquer production line
CN202747816U (en) * 2012-07-09 2013-02-20 江西镗钰窑炉技术开发有限公司 Energy saving device with heat exchange system on aluminum melting furnace by heat pipe technology

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