CN108101047A - A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace - Google Patents
A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace Download PDFInfo
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- CN108101047A CN108101047A CN201810120884.2A CN201810120884A CN108101047A CN 108101047 A CN108101047 A CN 108101047A CN 201810120884 A CN201810120884 A CN 201810120884A CN 108101047 A CN108101047 A CN 108101047A
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- temperature
- boiler tube
- graphitizing furnace
- continous way
- graphite
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Abstract
The present invention relates to carbon fiber thermal processing equipment fields,More particularly to a kind of multi-temperature zone continous way superhigh temperature graphitizing furnace,Include boiler tube,Temperature control system,Heating arrangements and heat-shield mechanism,Heating arrangements include several graphite heating bodies,Heat-shield mechanism includes several insulators,Temperature control system includes several and detects temperature sensor and controller of each graphite heating body to boiler tube heating temperature respectively,Inert gas is filled in the boiler tube,The heating arrangements and heat-shield mechanism outer sheath are equipped with rectangular configuration and its length direction metal shell parallel with boiler tube axis,The warm area of superhigh temperature graphitizing furnace is designed into 2 to 6 each warm area temperature independent detections and control by the present invention,Control the temperature between each warm area by graphite heating body and insulator independent,It with design temperature gradient and can be kept constant between each warm area,Insulator can influence each other to avoid different warm areas,The inert gas of boiler tube is to polyacrylonitrile fibril real-time guard under ultra-high temperature condition.
Description
Technical field
The present invention relates to carbon fiber thermal processing equipment field, more particularly to a kind of multi-temperature zone continous way superhigh temperature graphitization
Stove.
Background technology
Carbon fiber is the neutral most excellent fibrous material of energy of each fiber material, wherein processed on the basis of carbon fiber
High-strength high-modules carbon fibre (graphite fibre) is even more the king of fibrous material, due to the excellent properties of carbon fibre material, American-European-Japanese prosperity
Country is constantly carrying out the research and development of carbon fibre material product, and the high-end carbon fibre material technology in the world mainly rests in day U.S. at present
In family's hand.The existing technological factor for restricting domestic carbon fiber and graphite fibre technical merit at present also has process equipment factor.
The heat treatment process of carbon fiber be by aoxidize, be carbonized, be surface-treated etc. technical process to polyacrylonitrile fibril into
Row processing, polyacrylonitrile fibril is gradually heated in specific processing atmosphere on certain temperature, and it is former to remove polyacrylonitrile
Non-carbon element in silk, makes polyacrylonitrile fibril be converted into the carbon fiber of phosphorus content more than 90%.And high-strength high-modules carbon fibre (stone
Black fiber) processing technology is then on the basis of carbon-fiber high-temperature heat treatment, increase the heat treatment of further superhigh temperature, by fiber
Phosphorus content is further increased to more than 99%, then carries out the technique such as being surface-treated again.
The equipment of most critical is exactly superhigh temperature graphitizing furnace in carbon fiber superhigh temperature treatment process, superhigh temperature graphitizing furnace it
So technical threshold is very high, on the one hand the requirement to graphite heating body and boiler tube under such high-temperature is very high, if stone
The purity of ink, which is not achieved, can greatly shorten service life.Another aspect carbon fiber superhigh temperature heat treatment (graphitization) process is also one
The process of a complexity, different temperature gradients influence graphited quality, multi-temperature zone be conducive to the control of graphitizing process temperature and
The flexibility of adjusting, it is highly beneficial to being graphitized, however multi-temperature zone superhigh temperature graphitizing furnace is complicated, how to avoid not equality of temperature
Area, which influences each other, certain technical difficulty.Third, inert gas shielding of the operation to graphite heating body and boiler tube under ultra-high temperature condition
It is it is required that also very high.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of multi-temperature zone continous way superhigh temperature graphitization
Stove.
To solve the above problems, the present invention provides following technical scheme：
A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace includes horizontally disposed boiler tube, temperature control system, is arranged
Heating arrangements and heat-shield mechanism on boiler tube, heating arrangements include several for respectively to the graphite of boiler tube heat stepwise
Calandria, axis equidistantly distributed of all graphite heating bodies along boiler tube, heat-shield mechanism include several insulators, own
Insulator is arranged on one by one respectively between two graphite heating bodies, and temperature control system includes several and detects each stone respectively
Black calandria is electrically connected the temperature sensor and controller of boiler tube heating temperature, all temperature sensors with controller,
In the boiler tube rectangular configuration and its length direction are equipped with filled with inert gas, the heating arrangements and heat-shield mechanism outer sheath
The metal shell parallel with boiler tube axis.
Further, water-cooling system has been further included, the water-cooling system is laid on cold outside metal shell including several
But copper pipe and several throttle valves, all cooling copper tubes connect one by one with all throttle valves.
Further, the boiler tube both ends are both provided with boiler tube sealing mechanism, and boiler tube sealing mechanism includes and boiler tube one
The sealing column cap being threadedly coupled is held, the axis of column cap is sealed and is overlapped with the axis of boiler tube, the cylindrical side for sealing column cap is provided with admittedly
Reservation, fixed seat are fixedly connected with metal shell close to one end of fixed seat.
Further, the sealing column cap is provided with the through hole passed through for filament, the one end of sealing column cap away from boiler tube
The end cap for cylindrical type is provided with, the axis of end cap is overlapped with the axis of through hole, and the cylindrical side of end cap is provided with conveying inertia
The appendix of gas, the one end of end cap away from sealing column cap are provided with the avoid holes passed through for filament.
Further, the appendix is connected with to by inert gas and the separated air separation plant of air, two gas transmissions
Pipe connects respectively with the suction end of air separation plant and outlet side.
Further, it is described sealing column cap be located at through hole lean on proximal cover one end be provided with round platform type hole, round platform type hole
Axis is overlapped with sealing the axis of column cap, and the stub end of round platform type hole is set by proximal cover.
Further, the temperature sensor is the anti-oxidant thermocouple sensor of superhigh temperature, all graphite heating body difference
It is electrically connected by contactor and controller, throttle valve is electrically connected by driver and controller.
Further, it is provided with insulating layer on the inside of the metal shell, the insulating layer is graphite felt, boiler tube and all
Graphite heating body is high purity graphite, and all insulators are graphite felt.
Further, all temperature sensors correspond the segmentation that boiler tube heats with all graphite heating bodies.
Advantageous effect：A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace of the present invention, polyacrylonitrile fibril are held from one
The avoid holes of lid, which are penetrated, to be entered the boiler tube full of inert gas by the through hole for sealing column cap and then passes through another sealing column
The through hole of head is pierced by from the avoid holes of another end cap, and all graphite heating bodies gather the temperature for the segmentation that boiler tube heats from boiler tube
One end that acrylonitrile precursor penetrates increases to form temperature gradient successively to one end that boiler tube polyacrylonitrile fibril is pierced by, all graphite
Calandria is divided into several warm areas to the segmentation that boiler tube heats by all insulators, by all temperature sensors to each temperature
Area is detected in real time, controller by each temperature sensor transmit come electric signal judgement, pass through contactor and drive
The work efficiency of dynamic device control graphite heating body and several throttle valves, air separation plant wear inert gas from polyacrylonitrile fibril
Appendix is filled with boiler tube on the end cap entered, and air separation plant will from appendix on the end cap that polyacrylonitrile fibril is pierced by by inert gas
Inert gas sucks back, and space division after inert gas is separated, continues to be filled in boiler tube, ensure by compressing the gas sucked back
The warm area of superhigh temperature graphitizing furnace is designed into 2 to 6 each warm area temperature by the inert gas in boiler tube always full of entire boiler tube
Independent detection and control are spent, controls the temperature between each warm area by graphite heating body and insulator independent, avoids warm area
Between string temperature, with design temperature gradient and can keep constant between each warm area.The total temperature gradient of 2 to 6 warm areas can be real
Reasonable temperature gradient between 2000 degree to 3000 degree existing, different temperature gradients influence graphited quality, and multi-temperature zone has
The flexibility for controlling and adjusting beneficial to graphitizing process temperature, highly beneficial to being graphitized, insulator can be to avoid different warm areas
It influences each other, the inert gas of boiler tube is to polyacrylonitrile fibril real-time guard under ultra-high temperature condition.
Description of the drawings
Fig. 1 is the dimensional structure diagram one of the present invention；
Fig. 2 is the dimensional structure diagram two of the present invention；
Fig. 3 is the top view of the present invention；
Fig. 4 is sectional views of the Fig. 3 along line A-A；
Fig. 5 is the dimensional structure diagram of boiler tube sealing mechanism of the present invention, insulating layer and boiler tube；
Fig. 6 is the Standard schematic diagram of boiler tube of the invention, heating arrangements and heat-shield mechanism；
Fig. 7 is the boiler tube of the present invention and the assembling schematic diagram of temperature sensor；
Reference sign：Boiler tube 1, heating arrangements 2, graphite heating body 2a, heat-shield mechanism 3, insulator 3a, metal shell
4, insulating layer 4a4a, cooling copper tube 5, throttle valve 6, boiler tube sealing mechanism 7 seal column cap 7a, through hole 7a1, round platform type hole 7a2,
Fixed seat 7b, end cap 7c, appendix 7c1, avoid holes 7c2, temperature sensor 8.
Specific embodiment
With reference to Figure of description and embodiment, specific embodiments of the present invention are described in further detail：
Referring to figs. 1 to a kind of multi-temperature zone continous way superhigh temperature graphitizing furnace shown in Fig. 7, include horizontally disposed boiler tube
1st, temperature control system, the heating arrangements 2 that are set on boiler tube 1 and heat-shield mechanism 3, heating arrangements 2 include several and are used for
Respectively to the axis equidistantly distributed of graphite heating body 2a, all graphite heating body 2a along boiler tube 1 of 1 heat stepwise of boiler tube,
Heat-shield mechanism 3 includes several insulators 3a, and all insulator 3a are arranged on one by one respectively between two graphite heating body 2a,
Temperature control system includes several and detects temperature sensors 8 of each graphite heating body 2a to 1 heating temperature of boiler tube respectively
And controller, all temperature sensors 8 are electrically connected with controller, filled with inert gas, the heating in the boiler tube 1
Mechanism 2 and 3 outer sheath of heat-shield mechanism are equipped with rectangular configuration and its length direction metal shell 4 parallel with boiler tube axis.
Operation principle：A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace of the present invention, polyacrylonitrile fibril are held from one
Then the avoid holes 7c2 of lid 7c is penetrated enters the boiler tube 1 full of inert gas by addition by the through hole 7a1 for sealing column cap 7a
The avoid holes 7c2 of the through hole 7a1 of one sealing column cap 7a from another end cap 7c are pierced by, and all graphite heating body 2a are to boiler tube 1
The temperature of the segmentation of heating from one end that 1 polyacrylonitrile fibril of boiler tube penetrates to one end that 1 polyacrylonitrile fibril of boiler tube is pierced by according to
Secondary to increase to form temperature gradient, all graphite heating body 2a are divided into the segmentation that boiler tube 1 heats by all insulator 3a several
A warm area detects each warm area by all temperature sensors 8 in real time, and controller passes through to each temperature sensor 8
The judgement for the electric signal that transmission comes, passes through the work of contactor and driver control graphite heating body 2a and several throttle valves 6
Inert gas is filled with boiler tube 1 by efficiency, air separation plant from appendix 7c1 on the end cap 7c that polyacrylonitrile fibril penetrates, and space division is set
Standby that inert gas is sucked back to inert gas from appendix 7c1 on the end cap 7c that polyacrylonitrile fibril is pierced by, space division passes through pressure
Contract the gas sucked back, after inert gas is separated, continues to be filled in boiler tube 1, ensures that the inert gas in boiler tube 1 is full of always
Entire boiler tube 1.
Water-cooling system is further included, the water-cooling system includes several 5 Hes of cooling copper tube being laid on outside metal shell 4
Several throttle valves 6, all cooling copper tubes 5 connect one by one with all throttle valves 6, when graphite heating body 2a temperature is higher than each temperature
Temperature as defined in area, temperature sensor 8 transmit an electric signal to controller, and corresponding graphite body is powered off and controlled by controller
Throttle valve 6 accelerates the flowing velocity of water in cooling copper tube 5, by temperature stabilization within the specified temperature range.
1 both ends of boiler tube are both provided with boiler tube sealing mechanism 7, and boiler tube sealing mechanism 7 includes and 1 threaded one end of boiler tube
The sealing column cap 7a of connection, the axis of sealing column cap 7a are overlapped with the axis of boiler tube 1, and the cylindrical side of sealing column cap 7a is provided with admittedly
Reservation 7b, fixed seat 7b are fixedly connected with metal shell 4 close to one end of fixed seat 7b, seal column cap 7a and fixed seat 7b by stove
The end part seal of pipe 1 is lived, and ensures the sealing effect of the inert gas in boiler tube 1.
The sealing column cap 7a is provided with the through hole 7a1 passed through for filament, and the one end of sealing column cap 7a away from boiler tube 1 is set
The end cap 7c for cylindrical type is equipped with, the axis of end cap 7c is overlapped with the axis of through hole 7a1, and the cylindrical side of end cap 7c is provided with defeated
The appendix 7c1 of inert gas is sent, the one end of end cap 7c away from sealing column cap 7a is provided with the avoid holes passed through for filament
7c2, when polyacrylonitrile fibril penetrates boiler tube 1, the end cap that 1 polyacrylonitrile fibril of boiler tube is penetrated out of through hole 7a1 out of through hole 7a1
Appendix 7c1 on 7c is filled with inert gas by gas barrier outside, while inert gas enters boiler tube 1 with polyacrylonitrile fibril
It is interior, when polyacrylonitrile fibril carbonization completes to be pierced by from the end cap 7c of 1 other end of boiler tube that some inert gases, air separation plant can be taken out of
The air for adulterating inert gas from the appendix 7c1 for being pierced by the other end from boiler tube 1 close to polyacrylonitrile fibril is siphoned away, then will
Inert gas is separated after the air compression siphoned away and is continuing with.
The appendix 7c1 is connected with to by inert gas and the separated air separation plant of air, two appendixs 7c1 divide
It is not connected with the suction end of air separation plant and outlet side, air separation plant is the prior art, is not shown in figure, and air separation plant will adulterate
The air of inert gas siphons away from the appendix 7c1 that the other end is pierced by from boiler tube 1 close to polyacrylonitrile fibril, then will siphon away
Inert gas is separated after air compression, then enters from another appendix 7c1 in boiler tube 1, realizes the cycling of inert gas
It uses.
The sealing column cap 7a is located at through hole 7a1 and one end of proximal cover 7c is provided with round platform type hole 7a2, round platform type hole
The axis of 7a2 is overlapped with sealing the axis of column cap 7a, and the stub end of round platform type hole 7a2 is set by proximal cover 7c, convenient for indifferent gas
Body enters boiler tube 1.
The temperature sensor 8 is the anti-oxidant thermocouple sensor of superhigh temperature, for example, sky is held up by Longkou City holds up a day superhigh temperature material
Expect that the QKQT of equipment Co., Ltd production, all graphite heating body 2a are electrically connected respectively by contactor and controller, throttling
Valve 6 is electrically connected by driver and controller, and temperature sensor 8 detects all graphite heating body 2a and boiler tube 1 is heated in real time
Temperature, be then transported on an electric signal to controller, controller controls all graphite heating bodies respectively by all contactors
The break-make of the supply line of 2a.
It is graphite felt, boiler tube 1 and all stones that the inside of the metal shell 4, which is provided with insulating layer 4a, the insulating layer 4a,
Black calandria 2a is high purity graphite, and all insulator 3a are graphite felt, and graphite heating body 2a and boiler tube 1 all use high-purity stone
Ink, insulating layer 4a have selected high-grade graphite felt, and high purity graphite has high intensity, high density, high-purity, high stability, structure
The features such as dense uniform, high temperature resistant, conductivity are high, wearability is good, easy processing, graphite felt both supports as boiler tube 1 also serve as
Temperature insulating material between warm area, graphite felt have chosen high quality graphite felt.
All temperature sensors 8 correspond the segmentation that boiler tube 1 heats with all graphite heating body 2a, to realize
Multiple warm area temperature are adjusted in 2000 degree to 3000 degree rational temperature gradients, and all warm areas employ identical graphite heating body
2a and graphite-pipe material.Using digital display intelligent temperature control system, all temperature sensors 8 are completed in high precision for the temperature control of warm area
Measuring and controlling temp process, each warm area can independently heat up according to given heating curve, and can store different technique heating curves, temperature
Degree measurement uses far infrared heat radiation pyrometer laterally vertical thermometric, and from 1000~3000 degree, temperature measurement accuracy reaches temperature-measuring range
0.2~0.75%.To reduce influence of the protective gas to different warm areas, superhigh temperature graphite furnace is protected using argon gas, reduces inertia
Gas usage.
The above described is only a preferred embodiment of the present invention, any limit not is made to the technical scope of the present invention
System, therefore any subtle modifications, equivalent variations and modifications that every technical spirit according to the invention makees above example,
In the range of still falling within technical scheme.
Claims (9)
1. a kind of multi-temperature zone continous way superhigh temperature graphitizing furnace, it is characterised in that：Include horizontally disposed boiler tube (1), temperature
Control system, the heating arrangements (2) being set on boiler tube (1) and heat-shield mechanism (3), heating arrangements (2) include several use
In respectively to the graphite heating body (2a) of boiler tube (1) heat stepwise, all graphite heating bodies (2a) are along axis of boiler tube (1) etc.
Spacing is distributed, and heat-shield mechanism (3) includes several insulators (3a), and all insulators (3a) are arranged on two stones one by one respectively
Between black calandria (2a), temperature control system includes several and detects each graphite heating body (2a) respectively to boiler tube (1)
The temperature sensor (8) and controller of heating temperature, all temperature sensors (8) are electrically connected with controller, the boiler tube
(1) rectangular configuration and its length side are equipped with filled with inert gas, the heating arrangements (2) and heat-shield mechanism (3) outer sheath in
To the metal shell (4) parallel with boiler tube axis.
2. a kind of multi-temperature zone continous way superhigh temperature graphitizing furnace according to claim 1, it is characterised in that：Water is further included
Cooling system, the water-cooling system include several and are laid on the outer cooling copper tube (5) of metal shell (4) and several throttle valves
(6), all cooling copper tubes (5) connect one by one with all throttle valves.
3. a kind of multi-temperature zone continous way superhigh temperature graphitizing furnace according to claim 2, it is characterised in that：The boiler tube
(1) both ends are both provided with boiler tube sealing mechanism (7), boiler tube sealing mechanism (7) include be connected with boiler tube (1) threaded one end it is close
Column cap (7a) is sealed, the axis of sealing column cap (7a) is overlapped with the axis of boiler tube (1), and the cylindrical side of sealing column cap (7a) is provided with admittedly
Reservation (7b), fixed seat (7b) are fixedly connected with metal shell (4) close to one end of fixed seat (7b).
4. a kind of multi-temperature zone continous way superhigh temperature graphitizing furnace according to claim 3, it is characterised in that：The sealing column
Head (7a) is provided with the through hole (7a1) passed through for filament, and the one end of sealing column cap (7a) away from boiler tube (1) is provided with to justify
The end cap (7c) of column type, the axis of end cap (7c) are overlapped with the axis of through hole (7a1), and the cylindrical side of end cap (7c) is provided with conveying
The appendix (7c1) of inert gas, the one end of end cap (7c) away from sealing column cap (7a) are provided with the avoidance passed through for filament
Hole (7c2).
5. a kind of multi-temperature zone continous way superhigh temperature graphitizing furnace according to claim 4, it is characterised in that：The appendix
(7c1) is connected with to by inert gas and the separated air separation plant of air, two appendixs (7c1) respectively with air separation plant
Suction end is connected with outlet side.
6. a kind of multi-temperature zone continous way superhigh temperature graphitizing furnace according to claim 5, it is characterised in that：The sealing column
Head (7a) is located at through hole (7a1) and one end of proximal cover (7c) is provided with round platform type hole (7a2), the axis of round platform type hole (7a2)
It is overlapped with the axis of sealing column cap (7a), the stub end of round platform type hole (7a2) is set by proximal cover (7c).
7. a kind of multi-temperature zone continous way superhigh temperature graphitizing furnace according to claim 6, it is characterised in that：The temperature passes
Sensor (8) is the anti-oxidant thermocouple sensor of superhigh temperature, and all graphite heating bodies (2a) pass through contactor and controller electricity respectively
Property connection, throttle valve (6) passes through driver and controller and is electrically connected.
8. a kind of multi-temperature zone continous way superhigh temperature graphitizing furnace according to claim 7, it is characterised in that：Outside the metal
Insulating layer (4a) is provided on the inside of shell (4), the insulating layer (4a) is graphite felt, boiler tube (1) and all graphite heating bodies
(2a) is high purity graphite, and all insulators (3a) are graphite felt.
9. a kind of multi-temperature zone continous way superhigh temperature graphitizing furnace according to claim 8, it is characterised in that：All temperature
Degree sensor (8) corresponds the segmentation that boiler tube (1) heats with all graphite heating bodies (2a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120884.2A CN108101047A (en) | 2018-02-07 | 2018-02-07 | A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120884.2A CN108101047A (en) | 2018-02-07 | 2018-02-07 | A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace |
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| Publication Number | Publication Date |
|---|---|
| CN108101047A true CN108101047A (en) | 2018-06-01 |
Family
ID=62221983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810120884.2A Pending CN108101047A (en) | 2018-02-07 | 2018-02-07 | A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115342925A (en) * | 2022-08-16 | 2022-11-15 | 江苏汉华热管理科技有限公司 | Furnace top temperature monitoring method and system of graphitization furnace with deviation rectifying function |
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