CN105758182A - Oppositely-opened radiative heating furnace and furnace body - Google Patents
Oppositely-opened radiative heating furnace and furnace body Download PDFInfo
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- CN105758182A CN105758182A CN201610265106.3A CN201610265106A CN105758182A CN 105758182 A CN105758182 A CN 105758182A CN 201610265106 A CN201610265106 A CN 201610265106A CN 105758182 A CN105758182 A CN 105758182A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
- F27B17/02—Furnaces of a kind not covered by any preceding group specially designed for laboratory use
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
- F27D2019/0037—Quantity of electric current
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- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Resistance Heating (AREA)
- Tunnel Furnaces (AREA)
Abstract
The invention provides an oppositely-opened radiative heating furnace and a furnace body, belongs to the field of heating devices used in laboratories and aims at solving the problems of poor rapid heating and cooling performance and low cost performance of existing heating devices used in the laboratories.The furnace body is composed of two sections, wherein each section is provided with a sunken cavity, a wall body of each section is provided with a channel for circulating cooling liquid to flow through, the two cavities form a cylindrical hearth when the two section are oppositely combined together, and the wall face of the cylindrical hearth is a smooth and clean face.The heating furnace comprises a heating element, the furnace body and a temperature controller, wherein the heating element is a radiative heating tube, the furnace body comprises the cylindrical hearth with the smooth and clean wall face, the radiative heating tube is close to the surface of a heated object, and the surface of the heated object is coated with a high-emissivity coating so as to strengthen radiative heating.The furnace body is provided with a gas purging channel to achieve rapid cooling of the hearth, and the circulating cooling liquid flows through the whole furnace wall to ensure cooling of a whole mirror wall.The oppositely-opened radiative heating furnace and the furnace body can be used for a heating tube type reactor.The furnace body is compact and high in performance cost ratio.
Description
Technical field
The present invention relates to a kind of opposite opened radiation furnace and body of heater, belong to the firing equipment field in laboratory firing equipment field, particularly tubular reactor.
Background technology
Laboratory normal reheating furnace is generally adopted refractory material or low Heat Conduction Material as heat-insulation layer；Thermal capacity is big, heat conductivity is low causes that thermal inertia is big, heats and rate of temperature fall low (being generally slower than 30 DEG C/min), and it is inconvenient that heating furnace maintenance and heating are changed.Publication number is CN86207267 respectively, CN101685052A, CN201222023, the patent application of CN104011491A discloses a class and adopts ellipse cylinder or parabolic cylinder orienting reflex radiant light to realize the electric furnace of object heat temperature raising, these inventions are by directed for light and concentrate transmitting to heating object, being rapidly heated of heating object can be realized, it is generally used for the heat treatment of Material Field small sample, it is disadvantageous in that when it is for heated Tube reactor: 1. ellipse cylinder, parabolic cylinder is high with the requirement on machining accuracy of the installation site adding heat pipe, the difficulty of machine-shaping is big, costly；2. cause the infrared hot line overwhelming majority that heating object heats up to come from reflecting surface, heating properties height relies on the surface quality of reflecting surface, therefore reflecting surface usually requires that high-quality polishing and high performance reflected coat layer, and processing cost is high, require meticulously to safeguard, use inconvenience and maintenance difficult.3., without the technical measures realizing heating object fast cooling, it is unfavorable for the fast cooling of tubular reactor；4. the heat-loss at wall condition of burner hearth end is poor, picks out cable and potted component does not reliably shield high temperature, it is impossible to long-term (such as continuous 2 hours) add hot object, make object be in the stable condition of high temperature (such as 1000 DEG C)；5. microminiaturized, integrated, structure is friendly and it is good not to manipulate the serviceability such as convenient.
Existing laboratory firing equipment can not meet rapid temperature rise and drop, cost performance is high, is suitable to the requirement of large-scale promotion, therefore a kind of handling ease, heating and cooling excellent performance, compact conformation, close friend easy to use, cost performance height, exquisite electric furnace of doing manual work are researched and developed for improving experimental technique level, particularly improve the measuring technology level using tubular reactor to analyze high-temperature gas-solid reaction, there is important value.
Summary of the invention
It is an object of the invention to provide a kind of miniature radiation furnace of opposite opened and body of heater, to solve the problem that existing laboratory firing equipment exists rapid temperature rise and drop poor performance, cost performance is low.
The present invention solves that above-mentioned technical problem adopts the technical scheme that:
The present invention provides the body of heater of a kind of opposite opened radiation furnace, described body of heater is made up of two points of lobes, each point of lobe has the die cavity of depression, and the wall body of each point of lobe has the passage flowed through for circulating cooling liquid, two points of lobes are to when being combined, two die cavities constitute cylindrical burner hearth, and the wall of cylindrical burner hearth is smooth surface.
Described wall can be the surface roughness medal polish face less than 0.4 μm (or normal emittance is lower than 0.12).More closely, wall can adopt the surface roughness medal polish face less than 0.05 μm (or normal emittance is lower than 0.05).
Described wall also can one or more in plated with gold film, chromium film, nickel film, aluminum film, or spraying infrared reflection coating.
Described passage is distributed in sidewall and two end of point lobe.Namely described circulating cooling liquid may be designed as the sidewall flowing through point lobe and two end；Two ends arrange the through hole installing radiation heating tube, and the end of the head of radiation heating tube and point lobe is fixed by O RunddichtringO and seals, and described through hole wall is cooled down by circulating cooling liquid.
Described body of heater can be arranged with the inlet air flow passage of gas purging burner hearth.Alternatively, body of heater is arranged with the air stream outlet passage of gas purging burner hearth.
The present invention also provides for a kind of opposite opened radiation furnace, and described heating furnace includes radiation heating tube, temperature controller and such as the body of heater described by front technical scheme；Cylindrical burner hearth places heating object and near being laid in the radiation heating tube around heating object, and thermocouple is for measuring the temperature of heating object；Temperature controller receives, after thermocouple records temperature signal, the electrical heating power of radiation heating tube is carried out feedback control；The surface of a part of light direct irradiation heating object that radiation heating tube is launched, another part light is by irradiating the surface of heating object after the wall reflection of cylindrical burner hearth, its remaining light is absorbed by wall and the radiation heating tube of cylindrical burner hearth.
Described opposite opened radiation furnace is limited further, 2～8 radiation heating tubes around described heating object, can be arranged.
Described opposite opened radiation furnace is limited further, and described radiation heating tube can be iodine-tungsten lamp, wherein tungsten filament helix body diameter≤3mm, and the quartz ampoule external diameter of iodine-tungsten lamp is 10～14mm.
Heating object surface-coated high emissivity dope layer.Described heating object surface can be coated with high emissivity dope layer, and high emissivity coating can be nanometer silicon carbide coating.
Described opposite opened radiation furnace is limited further, described heating furnace also includes shell, linear bearing and sliding axle and connector, described shell includes fixing side and active side, one point of lobe is arranged in fixing side, another point of lobe is arranged in active side, fixing side and active side are connected by linear bearing, sliding axle and connector, when heating, fix side and active side Guan Bi.
Opposite opened radiation furnace of the present invention can be made radiation furnace micro-, small-sized, and namely described cylindrical furnace diameter is 50～120mm, is highly 100～400mm.
Principles of the invention is: adopt the bright and clean cylindrical burner hearth (cylindrical shape Jing Bi) even polished so that it is can be obtained by inexpensive way Combined machining such as turning, milling, grindings.Radiation heating tube is arranged near heating object, and in radiation heating tube, the high temperature tungsten filament (maximum operating temperature is up to 3000 DEG C) of energising launches infrared hot line, a part of hot line direct irradiation heating object；The infrared hot line of direct irradiation heating object can not then be transmitted into the Jing Bi of burner hearth, Jing Bi reflects infrared hot line, the a part of hot line reflected can be irradiated to heating object, and the hot line that can not be mapped to heating object through multiple reflections is absorbed by insulation device and radiation heating tube.Heating object is played the effect of heat temperature raising by all hot lines being irradiated to heating object.Therefore radiation heating tube is arranged to improve the radiation heating tube ascent to heating object, and can improve the ratio being irradiated to heating object surface after light line reflection near heating object, thus enhancing the heating object absorption photothermal intensity of radiation heating tube.
The smooth surface that emissivity is low reduces heat loss through radiation amount, thus preventing the heat loss of heating object, plays insulation effect.Circulating cooling liquid (water or oil) cooled hearth wall is adopted to prevent it from constantly heating up.Body of heater adopts metal material and cylindrical shape Jing Bi are easy to machine-shaping and improve cleanliness factor.Body of heater adopts opposite opened and connects with linear bearing, sliding axle and securing member, facilitates the installation of reactor, widens range of application and be greatly improved the efficiency operated with.Radiation heating tube head is arranged in water-cooled through hole but, it is prevented that pick out cable and potted component overtemperature is caused danger.Room temperature cold conditions gas purging burner hearth is adopted to improve rate of cooling.The contour emissivity coating of heating object surface-coated nano silicon carbide silicon coating, makes the emissivity on heating object surface far above other slin emissivity in burner hearth, to improve the efficiency of heating surface.
The invention has the beneficial effects as follows: the cylindrical shape Jing Bi that the present invention adopts is compared to ellipse cylinder or parabolic cylinder, and difficulty of processing is little, cost is low.The present invention makes up existing laboratory firing equipment deficiency in rapid temperature rise and drop performance and cost performance.Radiation heating tube arranges that near heating object can strengthen heating object absorbs the photothermal intensity of radiation heating tube.The design of heat transfer of the present invention focuses on the heat effect of the direct heating object of radiation heating tube, thus avoiding the dependence of the great surface quality of the high position precision to light path and Jing Bi.Heating object surface-coated high emissivity coating improves the efficiency of heating surface.Radiation heating tube head is arranged in water-cooled through hole but, improves the reliability of use, makes electric furnace can be maintained at high temperature for a long time.Room temperature cold conditions gas purging burner hearth is adopted to improve rate of cooling.Body of heater adopts opposite opened and connects with linear bearing, sliding axle and securing member, facilitates the installation of tubular reactor, has widened the range of application of electric furnace and structure is friendly, it is convenient to manipulate.The present invention realizes microminiaturization, clean and tidyization, attractive in appearanceization and high-endization for the instrument containing electric furnace and experimental provision, has higher using value and wide application prospect.
The body of heater of the miniature radiation furnace of opposite opened disclosed by the invention comprises the cylindrical burner hearth that wall is smooth surface；Radiation heating tube is laid near the surface of heating object；Heating object surface-coated high emissivity coating is to strengthen its rotating jet flow；Body of heater arranges gas purging passage to realize quickly cooling of burner hearth；Circulating cooling liquid flows through whole furnace wall and guarantees the cooling of whole Jing Bi.The highest can heating-up temperature higher than 1200 DEG C.The present invention can be used for heated Tube reactor, compared to the outstanding advantage of prior art: thermal capacity is low, it may be achieved tubular reactor 300 DEG C is per minute above to be rapidly heated, the accurately steady temperature of 700 DEG C of above fast coolings per minute and ± 1 DEG C；It is prone to processing, operation and maintenance.Body of heater is compact, and cost performance is high.
Accompanying drawing explanation
Fig. 1 illustrates that the heat transfer theory of the present invention, i.e. the light path of effective infrared hot line；Fig. 2 is furnace binding schematic diagram；Fig. 3 is the layout schematic diagram adopting 2 radiation heating tubes；Fig. 4 is the layout schematic diagram adopting 4 radiation heating tubes；Fig. 5 is the layout schematic diagram adopting 6 radiation heating tubes；Fig. 6 adopts the layout schematic diagram of 8 radiation heating tubes；Fig. 7 is the overall construction design figure of the miniature radiation furnace of a kind of opposite opened；Fig. 8 illustrates actual heating and the cooling-down effect of an application example of the present invention.
Wherein: 1-radiation heating tube；2-quartz ampoule；3-tungsten filament helix body；4-heating object；The outer surface of 5-heating object；6-high emissivity coating；7-wall；8-inlet air flow passage；9-temperature controller；10-thermocouple；11-air stream outlet passage；12-cooling passage；13-body of heater；14-fixes side；15-burner hearth steam is drawn and cooling heat transferring pipe；16-furnace purge gas inlet tube；17-fixing side coolant runner pipe；18-active side coolant runner pipe；19-latch；20-sliding axle；21-active side picks out cable skirt；22-active side；23-closes tight screw.
Detailed description of the invention
Detailed description of the invention one: the structural representation in conjunction with Fig. 1 and Fig. 2 illustrates present embodiment.The body of heater of a kind of opposite opened radiation furnace described in present embodiment, it is made up of two points of lobe 13-1, each point of lobe 13-1 has the die cavity 13-2 of depression, and the wall body of each point of lobe has the passage 13-3 flowed through for circulating cooling liquid, two points of lobe 13-1 are to when being combined, two die cavity 13-2 constitute cylindrical burner hearth, and the wall 7 of cylindrical burner hearth is smooth surface.
Detailed description of the invention two: present embodiment is described in conjunction with Fig. 1 and Fig. 2, in present embodiment, described smooth surface (wall 7) is the surface roughness medal polish face less than 0.4 μm or the normal emittance medal polish face lower than 0.12, by rough turn, finish turning, rough mill, finish-milling, grinding, the multiple processing mode such as electrochemical polish various Combined machining realize.Which adopts the mode of conventional inexpensive to obtain the mirror wall 7 meeting requirement, it is to avoid ellipse cylinder based on orienting reflex or the parabolic cylinder rigors to mirror wall surface roughness, it is simple to manufacture and use.Other composition of the present embodiment is identical with detailed description of the invention one with annexation.
Detailed description of the invention three: present embodiment is described in conjunction with Fig. 1 and Fig. 2, in present embodiment, more closely, wall 7 can adopt the surface roughness medal polish face less than 0.05 μm (or normal emittance is lower than 0.05).Namely described smooth surface is the surface roughness medal polish face less than 0.05 μm.Mirror wall 7 can be processed as the medal polish face that surface roughness is less than 0.05 μm or normal emittance is lower than 0.05, by rough turn, finish turning, rough mill, finish-milling, grinding, the multiple processing mode such as electrochemical polish various Combined machining realize.Which makes the heat-insulating property of wall 7 better so that heating-up temperature can be higher than 1200 DEG C, and can reduce the power consumption of heating.Other composition of the present embodiment is identical with detailed description of the invention one or two with annexation.
Detailed description of the invention four: present embodiment is described in conjunction with Fig. 1 and Fig. 2.In present embodiment, the wall of described cylindrical burner hearth is coated with one or more in gold film, chromium film, nickel film, aluminum film or spraying infrared reflection coating.Which makes the infrared emittance of wall 7 reduce further, and heat-insulating property is better.Other composition and annexation and detailed description of the invention one of the present embodiment, two or three identical.
Detailed description of the invention five: present embodiment is described in conjunction with Fig. 1 and Fig. 2, in present embodiment, described passage 13-3 is distributed in point sidewall of lobe 13-1 and two end.Circulating cooling liquid is designed as and flows through cylindrical shape wall 7 and burner hearth end；Burner hearth end arranges the through hole installing radiation heating tube 1, and head and the burner hearth end of radiation heating tube 1 are fixed by sealing ring and seal, and described through hole wall is cooled down by circulating cooling liquid.Which makes the end of radiation heating tube 1 be winding is effectively cooled, and can avoid picking out cable and the work of potted component overtemperature, thus improving the reliability of electric furnace and the duration of continuous operation.The other parts composition of the present embodiment is identical with any embodiment in detailed description of the invention one to four with annexation.
Detailed description of the invention six: present embodiment is described in conjunction with Fig. 1 and Fig. 2, in present embodiment, body of heater 13 is arranged with the inlet air flow passage 8 of gas purging burner hearth.When stopping heating and need fast cooling, the compression gas of cold conditions purges burner hearth by inlet air flow passage 8 timing and realizes the fast cooling of heating object.The other parts composition of the present embodiment is identical with any embodiment in detailed description of the invention one to five with annexation.
Detailed description of the invention seven: in conjunction with Fig. 1 to 6, present embodiment being described, a kind of opposite opened radiation furnace in present embodiment, including the body of heater 13 as described in radiation heating tube 1, temperature controller 9 and any detailed description of the invention in detailed description of the invention one to six；Cylindrical burner hearth places heating object 4 and near being laid in the radiation heating tube 1 around heating object 4, and thermocouple 10 is for measuring the temperature of heating object 4；Temperature controller 9 receives, after thermocouple 10 records temperature signal, the electrical heating power of radiation heating tube 1 is carried out feedback control；The surface of a part of light direct irradiation heating object 4 that radiation heating tube 1 is launched, another part light is by irradiating the surface of heating object 4 after wall 7 (the mirror wall 7) reflection of cylindrical burner hearth, its remaining light is absorbed by wall 7 (mirror wall 7) and the radiation heating tube 1 of cylindrical burner hearth.
The wall 7 of cylindrical burner hearth has insulation effect, and heating object 4 is placed in the central authorities of attemperator internal furnace, and radiation heating tube 1 is parallel to the axis of cylindrical shape mirror wall 7 and is installed on heating object 4 around, and near the surface of heating object 4；This design makes the thermal capacity of radiation furnace well below the normal reheating furnace being heat-insulation layer with refractory material and heat-barrier material, and therefore thermal inertia is little, is beneficial to the rapid temperature rise and drop of heating target, and performance is much better than normal reheating furnace.And the cylindrical shape mirror wall 7 adopted is compared with the ellipse cylinder that material heat treatment field is used or parabolic cylinder, difficulty of processing and cost are greatly reduced, and can be used for the tubular reactor of Heating Experiment room preferably.Radiation heating tube is arranged near heating object 4, it is possible to strengthen heated, and 4 absorb the photothermal intensity of radiation heating tube 1.This design of heat transfer is focused on radiation heating tube 1 and heating object 4 is directly heated effect, thus avoiding the dependence of the great surface quality of the high position precision to light path and mirror wall 7.
Detailed description of the invention eight: present embodiment is described in conjunction with Fig. 1～Fig. 6, described heating object (4) around arranges 2～8 radiation heating tubes (1)；Described radiation heating tube (1) is iodine-tungsten lamp, and tungsten filament helix body (3) external diameter of described iodine-tungsten lamp is less than or equal to 3mm, and quartz ampoule (2) external diameter of iodine-tungsten lamp is 10～14mm.In present embodiment, heating object 4 surrounding arranges 2～8 radiation heating tubes 1.Wherein majority of case can arrange 4 or 6 radiation heating tubes 1；When heating-up temperature can need to be higher than 1200 DEG C, arrange 6 or 8 radiation heating tubes 1.Radiation heating tube 1 is arranged in heating object 4 around equably.Which is easy to manufacture and use.In present embodiment, radiation heating tube 1 is iodine-tungsten lamp, and tungsten filament helix body 3 external diameter is less than 3mm, and quartz ampoule 2 external diameter of iodine-tungsten lamp is 10～14mm.Which cost is low and is easy to manufacture and use.Other composition of the present embodiment is identical with detailed description of the invention seven with annexation.
Detailed description of the invention nine: present embodiment is described in conjunction with Fig. 1 and Fig. 2, in present embodiment, heating object 4 surface-coated high emissivity dope layer 6.High emissivity dope layer 6 can be selected for nano silicon carbide silicon coating, and its emissivity is higher than 0.9, heating object 4 can be made to be efficiently absorbed radiant heat, thus improve the efficiency of heating surface.The other parts composition of the present embodiment is identical with detailed description of the invention seven or eight with annexation.
Detailed description of the invention ten: present embodiment is described in conjunction with Fig. 1～Fig. 7.Opposite opened radiation furnace described in present embodiment also includes shell, linear bearing and sliding axle 20 and connector, described shell includes fixing side 14 and active side 22, one point of lobe 13-1 is arranged in fixing side 14, another point of lobe 13-1 is arranged in active side 22, fixing side 14 and active side 22 are connected by linear bearing, sliding axle 20 and connector, when heating, fixing side 14 and active side 22 close.
The fixing side 14 of the opposite opened body of heater 13 of attemperator and active side 22 are connected by linear bearing, sliding axle 20 and securing member, and fixing side 14 and active side 22 are realized Guan Bi by the tight screw 23 of conjunction or hasp and realize Guan Bi.Body of heater 13 adopts opposite opened and connects with linear bearing, sliding axle 20 and securing member, facilitates the installation of reactor, widens range of application and be greatly improved the efficiency operated with；And make that the structure of heating furnace is friendly, it is convenient to manipulate, it is beneficial to the instrument containing electric furnace and experimental provision realizes microminiaturization, clean and tidyization, attractive in appearanceization and high-endization.The other parts composition of the present embodiment is identical with any embodiment in detailed description of the invention seven to nine with annexation.
For an embodiment to be more clearly understood that embodiments of the present invention and effect, as shown in Figure 8.
Embodiment: heated object is a tubular quartz fluidized-bed reactor, reactor quartz wall thickness 2mm, internal diameter is 20mm, quartz sand sintered porous sieve plate is set in the middle part of reactor, the argon stream of 0.35 Standard Liters per Minute flows through porous sieve plate from bottom to top, to be 4.2 grams of mean diameters on porous sieve plate be miniature fluid bed that the quartz sand of 120 microns formed.The application present invention, stretches into thermometric in miniature fluid bed by thermocouple 10, by the heating and cooling of the miniature fluid bed of programme-control.Adopt the version design of Fig. 7 and manufacture heating furnace.Wherein burner hearth internal diameter 70mm, height 220mm, arrange that 4 external diameters are the iodine-tungsten lamp of 10mm, and single iodine-tungsten lamp rated operational voltage AC220V, full power 1kW, circulating cooling water flow 1L/min, PID control cycle 0.25s.Iodine-tungsten lamp axial line and burner hearth axial line distance 21mm.Miniature fluid bed and following reactor outer wall coated with nano carborundum coating.Arranging heating schedule is: heat to 950 DEG C through 3min from 30 DEG C, then heats to 1000 DEG C through 3min, then stable at 1000 DEG C, finally opens compression air while stopping heating and purges burner hearth.In the miniature fluid bed of monitoring, temperature curve is as shown in Figure 8.It can be seen that after deducting the influence factor that control is delayed, miniature fluid bed can complete linear temperature increase according to setting program well, and temperature can stably at 1000 ± 0.5 DEG C.Temperature descending section temperature can drop to 600 DEG C from 1000 DEG C through 32s；Can dropping to 400 DEG C through 54s, rate of temperature fall is up to 736 DEG C/min.The operation of heating furnace and convenient to use.The cost of this electric furnace is less than the half of the close specification electric furnace cost adopting ellipse cylinder or parabolic cylinder, and cost performance is very high.This embodiment is owing to adopting all-metal material, avoid the phenomenon of the powder that drops that mullite fiber or ceramic wool insulation layer use procedure occur in conventional electric furnace, directly enhancing the clean and tidyization degree of miniature fluidized-bed reaction analyser, overall appearance is durable, is beneficial to the manufacture level improving instrument.And metal structure and modularized design make the replacing convenient and efficient of iodine-tungsten lamp, single iodine-tungsten lamp cost is lower than 300 yuan, even if therefore iodine-tungsten lamp is when unexpected smashing, it is possible to complete to change within very short time, compared to tradition electric furnace, safeguard and maintenance is very convenient.
Claims (10)
1. the body of heater of an opposite opened radiation furnace, it is characterized in that: described body of heater (13) is made up of two points of lobes (13-1), each point of lobe (13-1) has the die cavity (13-2) of depression, and the wall body of each point of lobe has the passage (13-3) flowed through for circulating cooling liquid, two points of lobes (13-1) are to when being combined, two die cavities (13-2) constitute cylindrical burner hearth, and the wall (7) of cylindrical burner hearth is smooth surface.
2. the body of heater of a kind of opposite opened radiation furnace according to claim 1, it is characterised in that: described smooth surface is the surface roughness medal polish face less than 0.4 μm.
3. the body of heater of a kind of opposite opened radiation furnace according to claim 2, it is characterised in that: described smooth surface is the surface roughness medal polish face less than 0.05 μm.
4. the body of heater of a kind of opposite opened radiation furnace according to claim 1,2 or 3, it is characterised in that: the wall of described cylindrical burner hearth is coated with one or more in gold film, chromium film, nickel film, aluminum film or spraying infrared reflection coating.
5. the body of heater of a kind of opposite opened radiation furnace according to claim 1, it is characterised in that: described passage (13-3) is distributed in sidewall and two end of a point lobe (13-1).
6. the body of heater of a kind of opposite opened radiation furnace according to claim 1, it is characterised in that: described body of heater (13) is arranged with the inlet air flow passage (8) of gas purging burner hearth.
7. an opposite opened radiation furnace, it is characterised in that: described heating furnace includes radiation heating tube (1), temperature controller (9) and the body of heater (13) as described in any claim in claim 1 to 6；Cylindrical burner hearth places heating object (4) and near being laid in heating object (4) radiation heating tube (1) around,
Thermocouple (10) is used for measuring the temperature of heating object (4)；Temperature controller (9) receives, after thermocouple (10) records temperature signal, the electrical heating power of radiation heating tube (1) is carried out feedback control；
The surface of a part of light direct irradiation heating object (4) that radiation heating tube (1) is launched, another part light is by irradiating the surface of heating object (4) after wall (7) reflection of cylindrical burner hearth, its remaining light is absorbed by wall (7) and the radiation heating tube (1) of cylindrical burner hearth.
8. a kind of opposite opened radiation furnace according to claim 7, it is characterised in that: described heating object (4) around arranges 2～8 radiation heating tubes (1)；Described radiation heating tube (1) is iodine-tungsten lamp, and tungsten filament helix body (3) external diameter of described iodine-tungsten lamp is less than or equal to 3mm, and quartz ampoule (2) external diameter of iodine-tungsten lamp is 10～14mm.
9. a kind of opposite opened radiation furnace according to claim 8, it is characterised in that: heating object (4) surface-coated high emissivity dope layer (6).
10. a kind of opposite opened radiation furnace according to claim 9, it is characterized in that: described heating furnace also includes shell, linear bearing, sliding axle (20) and connector, described shell includes fixing side (14) and active side (22), one point of lobe (13-1) is arranged in fixing side (14), another point of lobe (13-1) is arranged in active side (22), fixing side (14) and active side (22) pass through linear bearing, sliding axle (20) and connector connect, when heating, fixing side (14) and active side (22) Guan Bi.
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| CN201610265106.3A CN105758182B (en) | 2016-04-26 | 2016-04-26 | A kind of opposite opened radiation furnace and furnace body |
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| CN201610265106.3A CN105758182B (en) | 2016-04-26 | 2016-04-26 | A kind of opposite opened radiation furnace and furnace body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249587A (en) * | 2016-08-31 | 2016-12-21 | 中国科学院等离子体物理研究所 | A kind of heating means of accurate control first mirror sample surface temperature |
| CN108613378A (en) * | 2016-12-12 | 2018-10-02 | 中核新能核工业工程有限责任公司 | A kind of UF6Container heating fan housing |
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| CN108613378A (en) * | 2016-12-12 | 2018-10-02 | 中核新能核工业工程有限责任公司 | A kind of UF6Container heating fan housing |
| CN108613378B (en) * | 2016-12-12 | 2020-07-28 | 中核新能核工业工程有限责任公司 | UF (ultra filtration factor)6Fan cover for heating container |
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|---|---|
| CN105758182B (en) | 2018-09-07 |
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