CN1370971A - Sintering carbon pipe furnace with silicon carbide as electrothermal element - Google Patents

Abstract

The sintering carbon pipe furnace with silicon carbide as electrothermal element includes a main furnace body and automatic controller, and features that the split furnace body consists of preheating zone, the first high temperature zone, the first cooling zone, the second high temperature zone, and the second cooling zone successively connected movably. It can perform automatic feeding and discharge, fast and continuous once sintering and automatic temperature control; and has short sintering period of 30-80 min, low power consumption, adjustable sintering parameters, high production efficiency and other advantages.

Description

Sintering carbon pipe furnace with silicon carbide as electrothermal element

Sintering carbon pipe furnace with silicon carbide as electrothermal element, genus heating or other re-crystallized silicon carbide product burn till uses kiln.

At present, burning till of domestic heating such as electrothermal silicon carbide element is to adopt the kiln of falling cigarette biscuiting, the back utilizes reaction-sintered to reach crystallization mechanism again and burns till at the resistance furnace twice firing, and firing period is long, be generally 10 days, power consumption is high, product percent of pass is low, the quality instability.

Purpose of the present invention just is to overcome the deficiencies in the prior art, a kind of firing period is provided short 30-80 minute, power consumption is low, temperature is controlled automatically, burn till the adjustable sintering carbon pipe furnace with silicon carbide as electrothermal element of parameter, fills up a blank in this field.

The objective of the invention is to realize in the following way:

This sintering carbon pipe furnace with silicon carbide as electrothermal element comprises body of heater, automaton, it is characterized in that: body of heater is split type, mainly comprises: preheating zone 2, high temperate zone 3, salband 4, preheating zone 2, high temperate zone 3, salband 4 are movable successively to link to each other.

Purpose of the present invention also can realize in the following way:

Described sintering carbon pipe furnace with silicon carbide as electrothermal element, it is characterized in that: also comprise: pusher 1, discharging platform 5, pusher 1 leaves the gap with body of heater front end preheating zone 2 centerings, body of heater rear end salband 4 leaves the gap with discharging platform 5 centerings, pusher 1, preheating zone 2, high temperate zone 3, salband 4, discharging platform 5 are in-line to be arranged, and preheating zone 2, high temperate zone 3, salband 4 are connected and fixed and are one.

Described sintering carbon pipe furnace with silicon carbide as electrothermal element is characterized in that: described by preheating zone 2, high temperate zone 3, salband 4 constitute body of heater, the stove instrumentation tubes is circle, the bottom is provided with track 6.

Described sintering carbon pipe furnace with silicon carbide as electrothermal element, it is characterized in that: described pusher 1 also comprises: supporting wheels 7, base 8, bearing 16,24, chain 9,13,19, advance reductor 10, rewind down reductor 11, rubber blanket 25, pad 26, support 12, axle 14,21, guide post 15, pusher part 17, chain stretching device 18, pull bar 20, limit switch 22, stock support 23, pusher part 17 is contained on two guide posts 15, guide post 15 is contained on the support 12 through bearing 16, support 12 with have the base 8 that supports wheels 7 and link to each other, chain 9 one ends are contained on the sprocket wheel of axle 14, the other end is contained on the sprocket wheel that advances reductor 10, chain 13 1 ends are contained on the sprocket wheel of axle 14, the other end is contained on rewind down reductor 11 sprocket wheels, chain 19 1 ends are contained on the sprocket wheel of axle 14, the other end is contained on the sprocket wheel of axle 21, pull bar 20 and guide post 15 parallel installations, chain stretching device 18 is contained on the pull bar 20, pull bar 20 is contained on the support 12, and limit switch 22 is installed on the support 12.

Described sintering carbon pipe furnace with silicon carbide as electrothermal element, it is characterized in that: described preheating zone mainly comprises: preheating zone body of heater 30, preheating zone instrumentation tubes 31, heat-resistance stainless steel cover 28, the fire-resistant cover 29,32,36,40 of supporting, graphite bush 38, preheating zone body of heater 30, preheating zone instrumentation tubes 31 are split type, and preheating zone instrumentation tubes 31 is that tubulose is movable.

Described sintering carbon pipe furnace with silicon carbide as electrothermal element; it is characterized in that: described preheating zone also comprises: burner 27; split protection tube 33; threaded sleeve 34; O-ring seals 37; insulation sleeve 39; end cap 41; felt pad 42; insulating sleeve 43; hexagon-headed bolt 44; coupling sleeve 45; terminal box 46; insulation tube 47; resistance wire 48; binding post 49; felt pad 50; foundation bolt 51; supporting wheel frame 52; heat-insulation layer 53; preheating zone heat-resistance stainless steel cover 28; between graphite bush 38 and the preheating zone body of heater 30 by the supporting fire-resistant cover 29; 32; 36; 40 support; instrumentation tubes 30 arrival ends in preheating zone are sleeved in the heat-resistance stainless steel cover 28; the port of export is sleeved in the graphite bush 38; the thermal treatment zone is arranged on preheating zone body of heater 30 middle parts; body of heater 30 tops in preheating zone are provided with temperature thermocouple; suit threaded sleeve 34 again outside heat-resistance stainless steel cover 28; resistance wire 48 is in the groove of threaded sleeve 34; overcoat is split protection tube 33; binding post 49 is drawn outside the preheating zone body of heater 30; filling heat insulating wall 53 in the preheating zone body of heater 30; preheating zone body of heater 30 is erected by the stent support that has supporting wheel frame 52; burner 27 is equipped with in import department; end cap 41 is fixed on the preheating zone body of heater 30 of the fire-resistant cover of supporting 40 outer ends, and coupling sleeve 45 is fixed on end cap 41 upper outlets and links to each other with high temperate zone body of heater.

Described sintering carbon pipe furnace with silicon carbide as electrothermal element; it is characterized in that: described high temperate zone mainly comprises: high temperate zone instrumentation tubes 71; high temperate zone body of heater 82; high temperate zone protection tube 70; heating carbon pipe 58; protective gas; high temperate zone instrumentation tubes 71 is split type; be enclosed within the heat-generating pipe 58; in the middle of the heat-generating pipe 58 is straight tube-like; the both ends diameter connects greater than the diameter of middle straight tube and with straight pipe thread; 70 of heat-generating pipe 58 and high temperate zone protection tubes form certain interval; in be filled with protective gas; furnace end electrode 56 is inserted at heat-generating pipe 58 two ends, and high temperate zone instrumentation tubes 71 is advanced; the exit has protective gas to seal.

Described sintering carbon pipe furnace with silicon carbide as electrothermal element; it is characterized in that: described high temperate zone also comprises: flange 54; 75; hexagon-headed bolt 55; 60; furnace end electrode 56; electric conductor 57; water collar 59; felt pad 61; 72; end cap 63; lid 64; sealing gasket 65; refractory brick 66; carbon brick 67; filter fiber felt 68; filter screen 69; Insulation Material 73; burner positioner 74; insulation carbon black 76; the fastening steel band 77 of body of heater; O-ring seals 78; support 79; foundation bolt 80; thermal detector 81; body of heater 82 tops, high temperate zone are provided with thermal detector 81; high temperate zone protection tube 70 is bearing on the circular carbon brick 67; carbon brick 67 is contained in the refractory brick 66; heat-generating pipe 58 is inserted in the furnace end electrode 56; the filled conductive body 57 therebetween; by flange 54; 75 compress through bolt; furnace end electrode 56 is through in the water collar 59; water collar 59 usefulness bolts are separately fixed on the end cap 63; 70 of high temperate zone body of heater 82 and high temperate zone protection tubes are filled insulation carbon black 76; end cap 63 usefulness bolts link to each other with high temperate zone body of heater 82; the fastening steel band 77 of the scalable body of heater of high temperate zone body of heater 82 usefulness is fixed on the support 79 flange 54; 75 are arranged on high temperate zone body of heater 82 advances; outlet.

Described sintering carbon pipe furnace with silicon carbide as electrothermal element; it is characterized in that: described high temperate zone also comprises with thermal detector: graphite nut 84, thermometric protection tube 85, temperature tube 86, corundum pad 87, lid 88, cooling jacket 89, air damper 90, eyeglass 93, adapter sleeve 94, corundum cover 95, corundum pad 96, pad 97, bearing 98; temperature tube 86 is through in the thermometric protection tube 85; microscope base 91 is contained on the water collar 89; establish nitrogen purge lens device 92 in the microscope base 91, dress air damper 90 in the water collar 89.

Described sintering carbon pipe furnace with silicon carbide as electrothermal element, it is characterized in that: described salband mainly comprises: water jacket 101, graphite bushing 102, salband instrumentation tubes 103, supporting wheel frame 105, salband instrumentation tubes 103 is contained in cooling jacket 101 and the graphite bushing 102, the salband body of heater links to each other with high temperate zone, and burner 106 is equipped with in the outlet of salband body of heater.

Described sintering carbon pipe furnace with silicon carbide as electrothermal element, it is characterized in that: described discharging platform mainly comprises: limit switch 110, support 112, backing plate 113, insulation board 114, insulation sleeve 115, connect material platform 111 for semicircle, be contained on the support 112, connect material 112 on platform 111 and support is provided with insulation board 114, and limit switch 110 is arranged on the tail end of the platform 111 that connects material.

Sintering carbon pipe furnace with silicon carbide as electrothermal element of the present invention, the body of heater that main inventive point is design is split type, mainly comprise preheating zone 2, high temperate zone 3, salband 4, preheating zone 2, high temperate zone 3, salband 4 is movable successively to link to each other, in order to realize automation, preheating zone 2 front ends also can be provided with pusher 1, salband 4 rear ends also can be provided with discharging platform 5, whole body of heater is in-line and arranges, preheating zone 2, high temperate zone 3, salband 4 is connected and fixed and is one, high temperate zone 3 usefulness foundation bolts are fixed, pusher 1, preheating zone 2, salband 4 all is equipped with the V-arrangement peace shape bogie wheel that can regulate height, can move flexibly on the track 6 of V-arrangement peace shape, and pusher 1 leaves the gap with preheating zone 2 centerings, preheating zone 2, high temperate zone 3, salband 4 is interconnected into one through flange, and discharging platform 5 leaves the gap with salband 4 centerings.High temperate zone 3 heating powers expand to both sides, and preheating zone 2, salband 4 can move along track 6 to both sides, have solved the problem that is convenient for changing heat-generating pipe and protects high-temperature furnace body to expand with heat and contract with cold.The shift-in pipe 83 that is loaded with electrothermal silicon carbide element is manually put on pusher 1 stock support, pass inlet pipe 83 2 preheatings by the even low speed of pusher part through the preheating zone, samming was heated around paramount temperate zone 3 superhigh temperature moved down inlet pipe 83, carborundum crystallization again burns till electrothermal silicon carbide element, cool off gradually to salband 4, finally manually take off shift-in pipe 83 at discharging platform 5.Tunnel type burns till electrothermal silicon carbide element continuously, cooperate device for automatically controlling, automatic charging and discharging have been realized, quick continous way once-firing, temperature are controlled automatically, firing period is short, only 30～80 minutes, power consumption are low, burn till that parameter is adjustable, easy to maintenance, small investment, production efficiency advantages of higher, have filled up a blank in this field.

Fig. 1 is the overall structure schematic diagram of sintering carbon pipe furnace with silicon carbide as electrothermal element of the present invention;

Fig. 2 is the pusher structural representation;

Fig. 3 is a pusher A-A cross-sectional schematic;

Fig. 4 is that pusher B is to the broken section enlarged diagram;

Fig. 5 is a preheating zone structure cross-sectional schematic;

Fig. 6 is preheating zone structure C-C broken section enlarged diagram;

Fig. 7 is a high temperature band structure cross-sectional schematic;

Fig. 8 is a high temperature band structure D-D cross-sectional schematic;

Fig. 9 is a high temperate zone side temperature device structure cross-sectional schematic;

Figure 10 is a salband structure cross-sectional schematic;

Figure 11 is the discharging platform structural representation;

Figure 12 is the discharging platform schematic side view;

Figure 13 is a discharging platform I portion broken section enlarged diagram;

Figure 14 is the preheating zone schematic block circuit diagram;

Figure 15 is the charged road of a high temperature theory diagram;

Figure 16 is a high temperate zone superhigh temperature telemetry circuit theory diagram;

Fig. 1-the 16th, the most preferred embodiment of sintering carbon pipe furnace with silicon carbide as electrothermal element of the present invention is among Fig. 1-16: 3 high temperate zone 4 salbands, 5 discharging platforms, 6 guide rails, 7 supporting wheels, 8 bases 16 of 1 pusher, 2 preheating zones; 24 bearings 9; 13; 19 chains 10 advance reductor 11 rewind down reductors 25 rubber blankets 26 pads 12 supports 14; 21 15 guide post 17 pusher parts 18 chain stretching devices 20 pull bars 22 limit switches 23 stock supports 27 burners 28 heat-resistance stainless steels covers 29; 32; 36; the fire-resistant cover 30 preheating zone bodies of heater 31 preheating zone instrumentation tubes 33 of 40 supportings are split protection tube 34 threaded sleeves 35 thermocouple socket 37O shape sealing rings 38 graphite bush 39 insulation sleeves 41 end caps 42 felt pads 43 insulating sleeves 44 hexagon-headed bolts 45 coupling sleeves 46 terminal boxes 47 insulation tubes 48 resistance 49 binding posts 50 felt pads 51 foundation bolts 52 supporting wheel frames 53 heat-insulation layers 54; 75 flanges 55; 60 hexagon-headed bolts, 56 furnace end electrodes, 57 electric conductors, 58 heating carbon pipes, 59 water collars 61; the fastening steel band 78O of 72 felt pads, 62 insulation sleeve 63 end caps, 64 lid 65 sealing gaskets, 66 refractory brick 67 carbon bricks, 68 filter fiber felt 69 filter screens, 70 high temperate zone protection tube 71 high temperate zone instrumentation tubes, 73 Insulation Material 74 burner positioners, 76 insulation carbon black 77 bodies of heater shape sealing ring 79 supports 80 foundation bolts 81 thermal detectors 82 high temperate zone bodies of heater 83 shift-in pipes 84 graphite nuts 85 thermometric protection tubes 86 temperature tubes 87 corundum pads 88 lids 89 cooling jackets 90 air dampers 91 microscope bases 92 nitrogen purge lens devices 93 eyeglasses 94 adapter sleeves 95 corundum overlap 96 corundum pads, 97 pads, 98 bearings 99; 107 felt pads 100; 108 hexagon-headed bolts, 101 cooling jackets, 102 graphite bushings, 103 salband instrumentation tubes, 104 bogie wheels are regulated bolt 105 supporting wheel frames 106 burners 109 foundation bolts 110 limit switches 111 platform 112 supports 113 backing plates 114 insulation boards 115 insulation sleeves 116 that connect material; 123 three-phase alternating-current supplies, 117 rectifier transformers, 118 three-phase full-controlled bridges, 119 thermocouple temperature measurements 120; 129 automation control apparatus 121CF6B-A triggers, 122 feedback signals, 124 inlet wire reactors, 125 IGCTs exchange pressure regulator 126 rectifier transformers 127 silicon rectification circuits 128 optical fiber thermometric 130MC-1A control modules 131 current sampling circuits 132 fiber optic temperature detectors 133 digital temperature display instruments 134 silicon-controlled voltage regulation equipment.Be described in further detail below in conjunction with the operation principle and the course of work of accompanying drawing to sintering carbon pipe furnace with silicon carbide as electrothermal element of the present invention: the sintering carbon pipe furnace with silicon carbide as electrothermal element operation principle and the course of work of making playscript with stage directions invention as shown in Figure 1 are as follows: this sintering carbon pipe furnace with silicon carbide as electrothermal element, mainly by pusher 1, preheating zone 2, high temperate zone 3, salband 4, discharging platform 5, track 6 is formed, pusher 1, preheating zone 2, high temperate zone 3, salband 4, discharging platform 5 is in-line and arranges, high temperate zone 3 usefulness foundation bolts are fixed, pusher 1, preheating zone 2, salband 4 all is equipped with the V-arrangement peace shape bogie wheel that can regulate height, can on the track 6 of V-arrangement peace shape, move flexibly, pusher 1 leaves the gap with preheating zone 2 centerings, preheating zone 2, high temperate zone 3, salband 4 is interconnected into one through flange, and discharging platform 5 leaves the gap with salband 4 centerings.High temperate zone 3 heating powers expand to both sides, and preheating zone 2, salband 4 can move along track 6 to both sides, to protect high temperate zone.The shift-in pipe 83 that is loaded with electrothermal silicon carbide element is manually put on pusher 1 stock support, pass inlet pipe 83 2 preheatings by the even low speed of pusher part through the preheating zone, paramount temperate zone 3, samming is heated around superhigh temperature moves down inlet pipe 83, carborundum crystallization again burns till electrothermal silicon carbide element, cool off gradually to salband 4, finally manually take off shift-in pipe 83 at discharging platform 5.Tunnel type burns till electrothermal silicon carbide element continuously, and automatically into and out of stove, operator's labour intensity is low, and it is convenient to handle stove, keeps in repair simple and direct.The structure of each several part and course of work division are as follows:

One, the structure of pusher 1 and function:

Be that the shift-in pipe low speed that promotes the dress electrothermal silicon carbide element evenly enters in the stove.Its structure is shown in Fig. 2-4: pusher part 17 is contained on two guide posts 15, guide post 15 is contained on the support 12 through bearing 16, support 12 with have the base 8 that supports wheels 7 and link to each other, it adopts cycloidal planetary gear speed reducer driving chain 9, axle 14, chain 19, axle 21 will connect pusher part 17 and chain 19 with rubber blanket 25 and pad 26 through screw pusher part 17 in that to pass inlet pipe on the guide post 15 mobile in stock support 23 by variable-frequency stepless speed-regulating control ac motor through advancing reductor 10 the present invention.Pusher part 17 is return fast, adopts cycloidal planetary gear speed reducer driving chain 13, axle 14, chain 19, axle 21 and pusher part 17 by 11 the present invention of rewind down reductor, and it is return fast.

Advancing to go out axle head with rewind down reductor 11 electromagnetic clutch is housed, reductor motor and electromagnetic clutch simultaneously could move when electric.

Pusher part 17 advances and going-back position is controlled and limit protection is realized by limit switch 22.

Chain stretching device 18 is contained on the pull bar 20, and pull bar 20 is contained on the support 12.

Two, the structure of preheating zone and function

Preheating electrothermal silicon carbide element rod base, preheat temperature 100-800 ℃.Shown in Fig. 5-6; the graphite shift-in pipe 83 that is loaded with electrothermal silicon carbide element rod base moves in preheating zone hearthstone China ink instrumentation tubes 31; preheating zone hearthstone China ink instrumentation tubes 31 is contained in heat-resistance stainless steel cover 28 and the graphite bush 38; it is bearing in the fire-resistant cover 29 of supporting; 32; 36; on 40; support fire-resistant being set in the preheating zone body of heater 30; whole body of heater is circular; with end cap 41 by bolted on connection preheating zone body of heater 30; body of heater 30 middle part heat-resistance stainless steels in preheating zone overlap 28 overcoat corundum matter threaded sleeves 34; resistance wire 48 is in the groove of threaded sleeve 34; the overcoat corundum is verified and is opened protection tube 33; the space fills up insulation with aluminosilicate fiber cotton heat-insulation layer 53 in the preheating zone body of heater 30; draw resistance wire 48 and binding post 49 welding; binding post 49 suit corundum insulation tubes 47 are connected with power line through felt pad 50; temperature thermocouple inserts through socket 35 and splits in the protection tube 33, and three sections of preheating zone bodies of heater 30 minutes connect with flange plate bolt.Preheating zone body of heater 30 supports by supporting wheel frame 52, gas burner 27 is equipped with in its import, its outlet links to each other with high temperate zone furnace end electrode 56 usefulness bolts by coupling sleeve 45 felt pads, simultaneously, is enclosed within graphite bush 38 outer corundum felt pads 39 and penetrates flanged 54 endoporus of high temperature.

Three, high temperature band structure and function:

Produce 2500 ℃ of high temperature, the interior carborundum of excellent base crystallization again burns till electrothermal silicon carbide element.Shown in Fig. 7-8: the shift-in pipe 83 that electrothermal silicon carbide element rod base is housed moves in high temperate zone hearthstone China ink instrumentation tubes 71; in hearthstone China ink instrumentation tubes 71 installations of high temperate zone and the high resistivity heating graphite carbon pipe 58; being made into Insulation Material 73 with alumdum fixes; Insulation Material 73 is established nitrogen pore; with protection heating carbon pipe 58 inwalls and high temperate zone hearthstone China ink instrumentation tubes 71 outer walls; heating carbon pipe 58 overcoat graphite protection tubes 70; graphite protection tube 70 is bearing on the circular carbon brick 67; circular carbon brick 67 is contained in the corundum refractory brick 66, and corundum refractory brick 66 is installed in the water-cooled end cap 63.Furnace end electrode 56 is inserted at heating carbon pipe 58 two ends, furnace end electrode 56 is through in water collar 59 holes, water collar 59 pad felt pads are fastened on the end cap 63 with bolt, the crack is made into conduction with high power graphite powder etc. and expects 57 filling tampings between heating carbon pipe 58 and the furnace end electrode 56, compresses through bolt with heat-resisting cast iron flange 54 and flange 75.Furnace end electrode 56 is linked to each other with thyristor controlled three-phase rectifier transformer 126 outputs by water-cooled cable.End cap 63 usefulness bolts link to each other with high temperate zone body of heater 82, and high temperate zone body of heater 82 is circular, fill up insulation carbon black 76 in it.The fastening steel band 77 of the scalable body of heater of high temperate zone body of heater 82 usefulness is fixed on the support 79.

High pure nitrogen enters in the stove by filter fiber felt 68 and filter screen 69 from high temperate zone body of heater 82 upper caps 64, is discharged by furnace bottom.Body of heater 82 both sides high-purity nitrogen vertical furnace axis directions in high temperate zone enter from flange 54,75, and along axis direction both sides dischargings, with protection graphite protection tube 70, heating carbon pipe 58, high temperate zone hearthstone China ink instrumentation tubes 71 are at high temperature not oxidized, improve the life-span.

As shown in Figure 9: thermal detector 81 is contained on the high temperate zone body of heater 82; temperature tube 86 is a temperature tube at the bottom of the big resistivity carbon element band; temperature tube 86 overcoat carbon element thermometric protection tubes 85, carbon element thermometric protection tube 85 by corundum pad 96, down through 84 on graphite nut at graphite protection tube 70 outer walls.Corundum pad 87,96, corundum cover 95 is fixed on the high temperate zone body of heater 82 by lid 88, pad 97 and bearing 98,

Cover 88 tops dress cooling jacket 89; establish stream of nitrogen gas adjuster 90 in the cooling jacket 89; to reduce nitrogen flow rate; establish the thermometric mirror on the water jacket 89, it is made up of adapter sleeve 94, eyeglass 93 and microscope base 91, and microscope base 91 is built-in with nitrogen purge lens device 92; high pure nitrogen enters from microscope base 91 lateral apertures; inclined hole through nitrogen purge lens device 92 directly blows eyeglass 93 baseplanes, down slows down through air damper 90 then, goes in the stove gradually from temperature tube 86 and carbon element thermometric protection tube 85 wall thickness.The optical fiber temperature-measurement head is contained in and carries out contactless temperature-measuring on the adapter sleeve 94.

Four, salband structure and function:

The electrothermal silicon carbide element that cooling is burnt till:

As shown in figure 10: salband is made up of three sections round water jackets 101, graphite bushing 102, salband instrumentation tubes 103, supporting wheel frame 105 etc., shift-in pipe 83 with excellent base moves in salband instrumentation tubes 103, and salband instrumentation tubes 103 is contained in round water jacket 101 and the graphite bushing 102.Gas burner 106 is equipped with in the salband outlet, and the salband import is used bolted on connection through felt pad 99 with water jacket 101 upper flanges and high temperature flanged 75.

Five, discharging platform structure and function:

Connect the electrothermal silicon carbide element of cooling.

Shown in Figure 11-13: the platform 111 that connects material of semi-circular groove is contained on the steel welding manipulator 112, and the platform 111 that connects material is established insulation board 114 insulation with support 112.The bit switch 110 of limiting.

Six, Electric Appliance Cabinet:

Preheating zone control circuit theory diagram is as shown in figure 14: mainly by three-phase alternating-current supply 116, rectifier transformer 117, three-phase full-controlled bridge 118, preheating zone 2, temperature thermocouple 119, automation control apparatus 120, CF6B-A silicon controlled toggle 121, feedback signal 122, three-phase alternating-current supply 116, rectifier transformer 117, rectifier bridge 118, preheating zone 2 link to each other successively, to CF6B-A silicon controlled toggle 121, preheating zone 2 outputs arrive CF6B-A silicon controlled toggle 121 by temperature thermocouple 119, automation control apparatus 120 to rectifier bridge 118 outputs one end by feedback signal 122.Major loop mainly adopts three-phase full-bridge controlled rectifier, and output DC220V 50A has realized that output voltage, electric current are adjustable continuously; Control loop adopts CF6B-1A silicon controlled toggle 121, can realize open loop, two kinds of control modes of closed loop, and pressure limiting, two kinds of regulative modes of current limliting constant voltage have phase sequence self-adaption, the function of the blockade that powers on, soft start, overcurrent, overvoltage protection.

High temperate zone control circuit theory diagram is as shown in figure 15: mainly exchange pressure regulator 125, rectifier transformer 126, silicon rectification circuit 127, high temperate zone 3, optical fiber thermometric 128, automation control apparatus 129, MC-1A control module 130, current sampling circuit 131 by three-phase alternating-current supply 123, inlet wire reactor 124, IGCT and form.Three-phase alternating-current supply 123, inlet wire reactor 124, IGCT exchange pressure regulator 125, rectifier transformer 126, silicon rectification circuit 127, high temperate zone 3, optical fiber thermometric 128, automation control apparatus 129, MC-1A control module 130 and link to each other successively, MC-1A control module 130 outputs one end exchanges pressure regulator 125 and links to each other with IGCT, the three-phase alternating-current supply 123 output other ends link to each other with MC-1A control module 130 by current sampling circuit 131.Major loop has adopted IGCT to exchange regulating circuit, delivers to rectifier transformer after the pressure regulation, delivers to the double-reverse star rectification circuit after the transformation, and it is adjustable continuously to be transformed into direct current output 5～20V, 5000A.And leave centre tap at the rectifier transformer primary side, to satisfy the demand of pressure regulation.The adjusting of direct current output exchanges pressure regulator by the MC-1A control module to IGCT and carries out Regulation Control; can realize digital control; intelligent PI is regulated, the two closed-loop adjustment of current/voltage, and controller has holding circuits such as overcurrent, overload, the phase failure, lock-out, parameter error.When hydraulic pressure, nitrogen, liquefied gas, pusher, discharging etc. are broken down, the device panel sound and light alarm, when equipment overcurrent, fast molten fusing and silicon diode are overheated, the equipment sound and light alarm, and cut off major loop.

Figure 16 is a high temperate zone superhigh temperature TT﹠C system schematic block circuit diagram: as shown in the figure: mainly comprise: the fiber optic temperature detector 132 of Xiang Lianing, digital temperature display instrument 133, automation control apparatus 129, silicon-controlled voltage regulation equipment 134, high temperate zone heating carbon pipe 58 are formed successively, and silicon-controlled voltage regulation equipment 134 links to each other with fiber optic temperature detector 132 by high temperate zone heating carbon pipe 58.

Pusher: the pusher motor has adopted Frequency Converter Control.Can realize the stepless speed regulation of pusher speed.

Cooling water recirculation system has adopted the reserve pump automatic throw-in equipment.Water pump operation just often, a water pump is standby, and reserve pump puts into operation and sound and light alarm automatically when breaking down.

Other parts:

Instrument: infrared measurement of temperature is adopted in high temperate zone, be equipped with high-precision intelligent digital adjusting apparatus degree intelligent digital adjusting apparatus, control silicon-controlled voltage regulation equipment, and then the power of control heating graphite carbon pipe, its characteristics: optical fiber temperature-measurement is suitable for superhigh temperature and measures, 1400～3000 ℃ of temperature ranges, strong interference immunity, visual and clear, the advanced artificial intelligence network of the digital regulated instrument employing of high-precision intelligent of temperature digital display, automatic-adjusting technique, zero control accuracy height.Strong interference immunity, control is stable more, control accuracy greater than 0.15%, use the silicon-controlled voltage regulation system, the acyclic homologically trioial joint is level and smooth, power factor is high.

Liquid petroleum gas system: the interior liquefied gas of liquid gas storage tank to preheating zone import and salband exit gas burner, is realized liquefied gas fire envelope through the pressure-reducing valve transfer pipeline, prevents that oxygen enters and burn a small amount of carbon monoxide gas of discharge in the stove in the air.

The high-purity nitrogen induction system: bottled pure nitrogen gas is through pressure-reducing valve and low-pressure relief valve second depressurized, by nitrogen purification device purifying become high-purity nitrogen in flowmeter is imported both sides, high temperate zone and stove, thermal detector, protection graphite-pipe.

Cooling water recirculation system: the pond recirculated water that is provided with cooling tower is pumped paramount temperate zone, salband and nitrogen purification device through water pump and is cooled off.Backwater returns the pond, and the water conveyance conduit is established industrial magnetized drinking water device.Antiscale.

Sintering carbon pipe furnace with silicon carbide as electrothermal element of the present invention, burn till parameter, furnace atmosphere, each several part structure function and all can satisfy the requirement of electrothermal silicon carbide element superhigh temperature once-firing, for example can every interval burn till 15 of Φ 14 electrothermal silicon carbide elements in 30～80 minutes, electrothermal silicon carbide element resistance is in normal range (NR), the red heat uniformity surpasses existing technology, the qualified electrothermal silicon carbide element yield rate that rupture strength reaches standard is more than 85%, and part is Grade A and high-class product.

Sintering carbon pipe furnace with silicon carbide as electrothermal element of the present invention has been realized the steady average rate friction of pusher passing inlet pipe, and is pre-Control is stable automatically, the transmission of heating carbon pipe superhigh temperature heat is even temperature control even, high temperate zone, the torrid zone etc., this stove and have knot Structure novelty, practicality are good, easy to maintenance, small investment, production efficiency height, same batch of electrothermal silicon carbide element product burning till Steady quality, resistance uniformity, red heat good evenness, the firing period advantages such as greatly reduction that greatly shorten, consume energy.

Because being set in the thermal detector, high-purity nitrogen purifies lens device and air damper, logical high-purity nitrogen displacement in the stove Air is realized neutrality or weak reducing atmosphere in the stove, satisfies electrothermal silicon carbide element technology and burns till requirement, and prolong heating The life-span of carbon pipe, predicted life 2～3 months.

Claims (10)

1, sintering carbon pipe furnace with silicon carbide as electrothermal element, comprise body of heater, automaton, it is characterized in that: body of heater is split type, mainly comprises: preheating zone (2), high temperate zone (3), salband (4), preheating zone (2), high temperate zone (3), salband (4) are movable successively to link to each other.

2, sintering carbon pipe furnace with silicon carbide as electrothermal element according to claim 1, it is characterized in that: also comprise: pusher (1), discharging platform (5), pusher (1) leaves the gap with body of heater front end preheating zone (2) centering, body of heater rear end salband (4) leaves the gap with discharging platform (5) centering, pusher (1), preheating zone (2), high temperate zone (3), salband (4), discharging platform (5) are in-line to be arranged, and preheating zone (2), high temperate zone (3), salband (4) are connected and fixed and are one.

3, according to claim 1,2 described sintering carbon pipe furnace with silicon carbide as electrothermal element, it is characterized in that: described body of heater, the stove instrumentation tubes that is made of preheating zone (2), high temperate zone (3), salband (4) is circle, and the bottom is provided with track (6).

4, according to claim 1,2 described sintering carbon pipe furnace with silicon carbide as electrothermal element, it is characterized in that: described pusher (1) also comprises: supporting wheels (7), base (8), bearing (16), (24), chain (9), (13), (19), advance reductor (10), rewind down reductor (11), rubber blanket (25), pad (26), support (12), axle (14), (21), guide post (15), pusher part (17), chain stretching device (18), pull bar (20), limit switch (22), stock support (23), pusher part (17) is contained on two guide posts (15), guide post (15) is contained on the support (12) through bearing (16), support (12) links to each other with the base (8) that has supporting wheels (7), chain (9) one ends are contained on the sprocket wheel of axle (14), the other end is contained on the sprocket wheel that advances reductor (10), chain (13) one ends are contained on the sprocket wheel of axle (14), the other end is contained on rewind down reductor (11) sprocket wheel, chain (19) one ends are contained on the sprocket wheel of axle (14), the other end is contained on the sprocket wheel of axle (21), pull bar (20) and the parallel installation of guide post (15), chain stretching device (18) is contained on the pull bar (20), pull bar (20) is contained on the support (12), and limit switch (22) is installed on the support (12).

5, according to claim 1,2 described sintering carbon pipe furnace with silicon carbide as electrothermal element, it is characterized in that: described preheating zone mainly comprises: preheating zone body of heater (30), preheating zone instrumentation tubes (31), heat-resistance stainless steel cover (28), support fire-resistant cover (29), (32), (36), (40), graphite bush (38), preheating zone body of heater (30), preheating zone instrumentation tubes (31) are split type, and preheating zone instrumentation tubes (31) is that tubulose is movable.

6; sintering carbon pipe furnace with silicon carbide as electrothermal element according to claim 5; it is characterized in that: described preheating zone also comprises: burner (27); split protection tube (33); threaded sleeve (34); O-ring seals (37); insulation sleeve (39); end cap (41); felt pad (42); insulating sleeve (43); hexagon-headed bolt (44); coupling sleeve (45); terminal box (46); insulation tube (47); resistance wire (48); binding post (49); felt pad (50); foundation bolt (51); supporting wheel frame (52); heat-insulation layer (53); preheating zone heat-resistance stainless steel cover (28); between graphite bush (38) and the preheating zone body of heater (30) by the supporting fire-resistant cover (29); (32); (36); (40) support; preheating zone instrumentation tubes (30) arrival end is sleeved in the heat-resistance stainless steel cover (28); the port of export is sleeved in the graphite bush (38); the thermal treatment zone is arranged on preheating zone body of heater (30) middle part; preheating zone body of heater (30) top is provided with temperature thermocouple; suit threaded sleeve (34) again outside heat-resistance stainless steel cover (28); resistance wire (48) is split protection tube (33) around the interior overcoat of the groove of threaded sleeve (34); binding post (49) is drawn outside the preheating zone body of heater (30); the interior filling heat insulating wall of preheating zone body of heater (30) (53); preheating zone body of heater (30) is erected by the stent support that has supporting wheel frame (52); burner (27) is equipped with in import department; end cap (41) is fixed on the preheating zone body of heater (30) of supporting fire-resistant cover (40) outer end, and coupling sleeve (45) is fixed on end cap (41) upper outlet and links to each other with high temperate zone body of heater.

7; according to claim 1; 2 described sintering carbon pipe furnace with silicon carbide as electrothermal element; it is characterized in that: described high temperate zone mainly comprises: high temperate zone instrumentation tubes (71); high temperate zone body of heater (82); high temperate zone protection tube (70); heating carbon pipe (58); protective gas; high temperate zone instrumentation tubes (71) is split type; be enclosed within the heat-generating pipe (58); in the middle of the heat-generating pipe (58) is straight tube-like; the both ends diameter connects greater than the diameter of middle straight tube and with straight pipe thread; form certain interval between heat-generating pipe (58) and high temperate zone protection tube (70); in be filled with protective gas; furnace end electrode (56) is inserted at heat-generating pipe (58) two ends, and high temperate zone instrumentation tubes (71) is advanced; the exit has protective gas to seal.

8; sintering carbon pipe furnace with silicon carbide as electrothermal element according to claim 7; it is characterized in that: described high temperate zone also comprises: flange (54); (75); hexagon-headed bolt (55); (60); furnace end electrode (56); electric conductor (57); water collar (59); felt pad (61); (72); end cap (63); lid (64); sealing gasket (65); refractory brick (66); carbon brick (67); filter fiber felt (68); filter screen (69); Insulation Material (73); burner positioner (74); insulation carbon black (76); the fastening steel band of body of heater (77); O-ring seals (78); support (79); foundation bolt (80); thermal detector (81); high temperate zone body of heater (82) top is provided with thermal detector (81); high temperate zone protection tube (70) is bearing in circular carbon to be changeed on (67); carbon changes (67) and is contained in the refractory brick (66); heat-generating pipe (58) is inserted in the furnace end electrode (56); filled conductive body (57) therebetween; by flange (54); (75) compress through bolt; furnace end electrode (56) is through in the water collar (59); water collar (59) is separately fixed on the end cap (63) with bolt; fill insulation carbon black (76) between high temperate zone body of heater (82) and high temperate zone protection tube (70); end cap (63) links to each other with high temperate zone body of heater (82) with bolt; high temperate zone body of heater (82) is fixed on the support (79) with the fastening steel band of scalable body of heater (77), flange (54); (75) being arranged on high temperate zone body of heater (82) advances; outlet.

9; sintering carbon pipe furnace with silicon carbide as electrothermal element according to claim 8; it is characterized in that: described high temperate zone also comprises with thermal detector: graphite nut (84); thermometric protection tube (85); temperature tube (86); corundum pad (87); lid (88); cooling jacket (89); air damper (90); eyeglass (93); adapter sleeve (94); corundum cover (95); corundum pad (96); pad (97); bearing (98); temperature tube (86) is through in the thermometric protection tube (85); microscope base (91) is contained on the water collar (89); establish nitrogen purge lens device (92) in the microscope base (91), dress air damper (90) in the water collar (89).

10, according to claim 1,2 described sintering carbon pipe furnace with silicon carbide as electrothermal element, it is characterized in that: described salband mainly comprises: water jacket (101), graphite bushing (102), salband instrumentation tubes (103), supporting wheel frame (105), salband instrumentation tubes (103) is contained in cooling jacket (101) and the graphite bushing (102), the salband body of heater links to each other with high temperate zone, and burner (106) is equipped with in the outlet of salband body of heater.

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