CN202499885U - Heat conductor of wire annealing furnace - Google Patents
Heat conductor of wire annealing furnace Download PDFInfo
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- CN202499885U CN202499885U CN2011205508159U CN201120550815U CN202499885U CN 202499885 U CN202499885 U CN 202499885U CN 2011205508159 U CN2011205508159 U CN 2011205508159U CN 201120550815 U CN201120550815 U CN 201120550815U CN 202499885 U CN202499885 U CN 202499885U
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Abstract
The utility model relates to a heat conductor of a wire annealing furnace. The heat conductor comprises an annealing furnace shell and a plurality of annealing furnace tubes, wherein the plurality of annealing furnace tubes are arranged equidistantly; a heat conduction layer is coated on the outer sides of the annealing furnace tubes, a heater is arranged on the outer side of the heat conduction layer, and the heat conduction layer is a high-temperature-resisting cast iron plate heat conduction layer. According to the heat conductor of the wire annealing furnace, disclosed by the utility model, heat of the heater can be firstly uniformly conducted in the heat conduction layer of the high-temperature-resisting cast iron plate and is conducted to the annealing furnace tubes, thus the transverse temperature of each annealing furnace is more uniform, the longitudinal temperature of each annealing furnace is smoother, the cost is lower when a thicker high-temperature-resisting cast iron plate is taken as the heat conduction layer, and the high-temperature-resisting cast iron plate is unlikely to deform and break at high temperature; and in addition, the annealing furnace tubes can keep a straight line state so that a problem of wire breakage caused by bending of the annealing furnace tubes can be avoided, and the heat conductivity of the integral heat conduction layer consisting of the high-temperature-resisting cast iron plates is good.
Description
Technical field
The utility model relates to wire annealing stove technical field, specifically, relates to wire annealing stove heat-transfer device.
Background technology
The inventor's Chinese utility model patent " lehre heating unit " (patent No.: ZL20072 0061041.7) has proposed the notion of wire annealing stove heat-conducting layer; Its structure comprises the annealing boiler tube row who is lined up prescribed distance by many annealing boiler tubes; The exclusive side of annealing boiler tube is enclosed with insulation layer, and the wire spiral that is installed with the insulation porcelain bead is around in outside the insulation layer, and the exclusive side of annealing boiler tube is enclosed with heat-conducting layer; Insulation layer is wrapped in outside the heat-conducting layer; The heat that its wire spiral sends passes to heat-conducting layer earlier, and heat-conducting layer conducts heat evenly earlier in body, again heat is conducted the annealing boiler tube that wraps up to by its; Temperature between its each root annealing boiler tube can be very even, and is especially good and can reach very ideal effect when thicker in the heat-conducting layer thermal conductivity.
But the artificial annealing boiler tube of installing is difficult to keep equidistantly between the annealing boiler tube; Even when installing is equally spaced annealing boiler tube, because that the annealing boiler tube does not obtain is effectively fixing, in use; Annealing boiler tube easy move left and right, and the annealing boiler tube arranged of equidistance not cause every wire annealing degree varies in the annealing boiler tube to cause easily; Localized hyperthermia or low temperature appear, problem such as cause sticking line or wire annealing degree varies to show and the unit elongation of anneal afterwards is inconsistent.
On the other hand; The type of heating of lehre of the prior art generally adopts wire spiral and electrothermal tube heating, though wire spiral type of heating energy consumption is lower with respect to the electrothermal tube type of heating, it damages than being easier to; And damaging the back is difficult for changing; So limited its use, the quality of the heat conductivility of heat-conducting layer, closely bound up with the life-span length of wire spiral.
Summary of the invention
The utility model has overcome shortcoming of the prior art, and a kind of wire annealing stove heat-transfer device is provided, and it can improve the quality of products, and prolongs the work-ing life of wire rod lehre, reduces production costs.
In order to solve the problems of the technologies described above, the utility model is realized through following technical scheme:
A kind of wire annealing stove heat-transfer device comprises lehre shell and the some annealing boiler tubes that equidistance is arranged, and the annealing boiler tube outside is enclosed with heat-conducting layer, and the heat-conducting layer arranged outside has heating unit, and heat-conducting layer is high temperature resistant cast iron plate heat-conducting layer.
Further, heat-conducting layer comprises the last heat-conducting layer and following heat-conducting layer that is interlocked, and last heat-conducting layer bottom is provided with the storage tank that equidistance is arranged with following heat-conducting layer top correspondence.
Further, last heat-conducting layer top and following heat-conducting layer bottom are provided with horizontal stiffening web.
Further, heating unit is an electrothermal tube, and electrothermal tube is installed on the top of heat-conducting layer or the bottom of following heat-conducting layer.
Further, heating unit is a wire spiral, and the heat-conducting layer outside is enclosed with insulation layer, and the insulation layer arranged outside has anti-the expansion to support, and the wire spiral that is installed with the insulation porcelain bead is set around insulation layer and supports the outside with anti-the expansion.
Further, wire annealing stove heat-transfer device material working direction along the line comprises the plurality of sections heat-conducting layer, near every section heat-conducting layer of wire annealing stove ingress respectively correspondence be provided with 1 thermopair, form monolithic temperature control district; Away from two sections of wire annealing stove ingress or three sections heat-conducting layers respectively correspondence be provided with 1 thermopair, form two or three temperature control districts, thermopair passes heat-conducting layer and contacts with the annealing boiler tube.
Further, temperature control is provided with the expansion joint between the district, connects through high temperature resistant hook between the expansion joint.
Further, be connected with the import positioning tie bar between the heat-conducting layer of wire annealing stove ingress and the lehre shell, be provided with fireproof insulation brick between the heat-conducting layer at wire annealing outlet of still place and the lehre shell, enclosure heat-conducting layer arranged outside has insulating cotton.
Compared with prior art, the beneficial effect of the utility model is:
A kind of wire annealing stove heat-transfer device of the utility model can be even in high temperature resistant cast iron plate heat-conducting layer conducted inside with the heat of heating unit earlier, conducts heat to the annealing boiler tube again; Make that each root annealing boiler tube transverse temperature is comparatively even, longitudinal temperature is comparatively level and smooth, and adopts thicker high temperature resistant cast iron plate lower as the cost of heat-conducting layer; And at high temperature be difficult for deformed damaged; Annealing boiler tube in it can keep linear state, thereby can avoid the broken string problem that causes because of the lehre canal curvature, has therefore improved quality product; Prolong the work-ing life of wire rod lehre, and reduced production cost.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the annealing furnace structure synoptic diagram of electrothermal tube heating;
Fig. 2 is the structural representation of the xsect at B-B place among Fig. 1;
Fig. 3 is the annealing furnace structure synoptic diagram of wire spiral heating;
Fig. 4 is the structural representation of the xsect at C-C place among Fig. 3;
Fig. 5 is the heat-conducting layer cross sectional representation;
Fig. 6 is a wire spiral heated side view;
Fig. 7 is an electrothermal tube heated side view;
Fig. 8 is the local enlarged diagram at A place among Fig. 1.
Among the figure,
1---shell; 2---the annealing boiler tube;
3---insulating cotton; 4---the import positioning tie bar;
5---insulation layer; 6---the insulation porcelain bead;
7---go up heat-conducting layer; 8---following heat-conducting layer;
9---horizontal stiffening web; 10---wire spiral;
11---fireproof insulation brick; 12---thermopair;
13---electrothermal tube; 14---storage tank;
15---the import of wire annealing stove; 16---the wire annealing outlet of still;
17---the expansion joint; 18---high temperature resistant hook.
Embodiment
Embodiment 1:
Shown in Fig. 1 to 8; The described a kind of wire annealing stove heat-transfer device of the utility model comprises the annealing boiler tube 2 that lehre shell 1 and some equidistance are arranged, and annealing boiler tube 2 outsides are enclosed with heat-conducting layer; The heat-conducting layer arranged outside has heating unit, and heat-conducting layer is high temperature resistant cast iron plate heat-conducting layer.
Heating unit is a wire spiral 10, and the heat-conducting layer outside is enclosed with insulation layer 5, and insulation layer 5 arranged outside have anti-the expansion to support, and the wire spiral 10 that is installed with insulation porcelain bead 6 is set around insulation layer 5 and supports the outside with anti-the expansion.
Heat-conducting layer comprises the last heat-conducting layer 7 and following heat-conducting layer 8 that is interlocked, and last heat-conducting layer 7 bottoms are provided with the storage tank 14 that equidistance is arranged with following heat-conducting layer 8 top correspondences.
After heat-conducting layer was set, the heat that heating unit sends was even in high temperature resistant cast iron plate heat-conducting layer conducted inside, conducted heat to annealing boiler tube 2 again, made that 2 transverse temperatures of each root annealing boiler tube are comparatively even, and longitudinal temperature is comparatively level and smooth.Wherein 2 transverse temperatures of each root annealing boiler tube are comparatively even, and the wire annealing temperature in the boiler tube 2 that can guarantee respectively to anneal is close, reduce the unit elongation difference after their annealing, the consistence that can improve the quality of products.And longitudinal temperature smoothly can be avoided the sticking line problem that causes because of localized hyperthermia, reduces the operative employee and handles unusual frequency, thereby improve the quality of products.
The anti-support of expanding is selected for use under the high temperature and can be melted or burn till ashes, and the resistates non electrically conductive material.It keeps certain surplus in the time of can making wire spiral 10 wrapped, prevents the problem that heat-conducting layer expands and causes wire spiral 10 overtensions or break.
Being connected with import positioning tie bar 4 between the heat-conducting layer at wire annealing stove import 15 places and the lehre shell 1 connects; Be provided with fireproof insulation brick 11 between the heat-conducting layer at wire annealing outlet of still 16 places and the lehre shell 1, shell 1 inner heat-conducting layer arranged outside has insulating cotton 3.Be provided with expansion joint 17 between the temperature control district, connect through high temperature resistant hook 18 between the expansion joint 17.
Concrete, consult Fig. 6, Fig. 7 and Fig. 8, last heat-conducting layer 7 tops are provided with horizontal stiffening web 9 with following heat-conducting layer 8 bottoms; Make heat-conducting layer be difficult for taking place warpage; Heat-conducting layer is in the positioning action of lehre import positioning tie bar 4 and wire annealing outlet of still 16 fireproof insulation bricks 11, and under the qualification of the high temperature resistant hook 18 at 17 places, expansion joint, can not take place to move significantly; Can keep wire spiral 10 positions constant basically, reduce the short circuit that wire spiral 10 displacements cause or break fault.
Concrete, the moderate length of heat-conducting layer makes every heat-conducting layer be easy to carrying and installation, and is suitable for twining a wire spiral 10; The heat-conducting layer both sides of two make-ups connect with the high temperature resistant stainless steel screw up and down, also available electrode for cast iron welding; The heat-conducting layer outer felt of one group of make-up can directly be twined around a stranded wire spiral 10 that is installed with insulation porcelain bead 6, also can wrap up one deck mica paper in the heat-conducting layer outside of make-up earlier and twine; The heat-conducting layer outside circle that the stranded wire spiral 10 that is installed with porcelain bead is wrapped in make-up with enclose between should keep at a distance; They must not be less than 2 centimetres apart from minimum; Spacing between wire spiral 10 circles and the circle can prevent that the heat that adjacent resistor silk 10 sends from influencing each other, and avoids too high the blowing of wire spiral 10 temperature; The stranded wire spiral 10 that is installed with insulation porcelain bead 6 is after leaving the heat-conducting layer surface of make-up, and sectional area should double above, and thermal value is reduced, and cuts down the consumption of energy, and passes the connection terminal that insulating cotton 3 arrives lehre shell 1 place then.
Wire annealing stove heat-transfer device material working direction along the line comprises the plurality of sections heat-conducting layer, near every section heat-conducting layer at wire annealing stove import 15 places respectively correspondence be provided with 1 thermopair 12, form monolithic temperature control district; Away from two sections of wire annealing stove import 15 places or three sections heat-conducting layers respectively correspondence be provided with 1 thermopair 12, form two or three temperature control districts, thermopair 12 passes heat-conducting layer and contacts with annealing boiler tube 2.
Concrete, referring to Fig. 1, Fig. 3 and Fig. 8, in the more wire annealing stove import 15 of heat exhaustion, the high temperature resistant cast iron plate heat-conducting layer of every make-up is provided with a thermopair 12, and thermopair 12 passes heat-conducting layer and contacts with annealing boiler tube 2, forms a monolithic temperature control district; At the less middle part of heat exhaustion, the heat-conducting layer of two make-ups is right after together, and seam crossing is installed thermopair 12, and thermopair 12 passes heat-conducting layer and contacts with annealing boiler tube 2, forms two temperature control districts; Leave expansion joint 17 between the temperature control district, its maximum slit is limited by high temperature resistant hook 18 in expansion joint 17, and high temperature resistant hook 18 can adopt the high temperature resistant stainless steel hook; Near wire annealing stove import 15, i.e. the high-order bit of lehre, 1 on the heat-conducting layer of make-up and lehre shell are connected with the high temperature resistant stainless steel pull bar, and its spacing is fixed; Near wire annealing outlet of still 16, i.e. the minimum position of lehre, 1 on the heat-conducting layer of make-up and lehre shell support with fireproof insulation brick 11, and its spacing is not dwindled.
When the heat that the heat-conducting layer that thermal conductivity is good can make wire spiral 10 send passes to heat-conducting layer through insulation porcelain bead 6, can make the heat-conducting layer local temperature near wire spiral 10 approach the heat-conducting layer bulk temperature effectively by the heat-conducting layer diffusion, also be the lehre observed temperature.So, wire spiral 10 temperature during the energising heating just can not be too high and too high because of approaching with it heat-conducting layer temperature, causes melting and blow fault.
But; When heat-conducting layer is heated to comparatively high temps, must be higher around above that wire spiral 10 temperature, the heat that just wire spiral 10 is sent passes insulation porcelain bead 6 and passes to heat-conducting layer; Thereby heating makes wire spiral 10 self melt easily continuously, causes extremely difficult Serious Accident of repairing.Compare with domestic electrothermal tube commonly used 13 heating; The advantage of wire spiral 10 heating is that energy consumption is lower; Shortcoming is extremely difficult reparation the after wire spiral 10 damages; Need take measures to reduce its failure rate, have only to reach work-ing life more than the several years, its advantage energy-conservation and uniformity of temperature profile is accepted by market.
Therefore, when adopting wire spiral 10 to make heating unit, temperature control should not use temp controlled meter to carry out; Should use PLC to adopt setter to carry out, come the controlled temperature, also tackle the condition of high temperature and execute and add heat and successively decrease and force fault protection except that adopting pid algorithm to calculate to add heat; Compulsory execution adds heat successively decreases and is meant when thermopair 12 records temperature near ultimate temperature, limits it and adds heat and be lower than 100%, and it is low more to add heat near the ultimate temperature restriction more; Thereby for heat is passed toward heat-conducting layer by stranded wire spiral 10 is provided the more time, makes the two temperature difference unlikely excessive, the unlikely too high damage that causes melting of promptly stranded wire spiral 10 temperature; And when the heat-conducting layer temperature was higher, control added the distribution of heat on time shaft, avoids undue concentration; Mainly be restriction maximum heating amount, concrete control method is:
Steps A: set lehre and play limit temperature and top temperature, adopt the nickel-chromium resistance wire 10 of about 1200 degree of fusing point, during the high silicon heat resisting iron of heat-resisting about 850 degree, lehre plays the limit temperature and should be 600 ~ 700 degree, and the lehre top temperature should be 750 ~ 850 degree;
Step B: equaled the limit temperature if observed temperature is lower than; PLC can add heat control solid state relay to wire spiral 10 energising heating according to what pid algorithm calculated; In a sampling period, account for the per-cent in sampling period conduction time, promptly adding heat can change between 0 ~ 100%;
Step C: temperature is lower than top temperature if observed temperature has been higher than limit; Calculate: restriction adds heat=100%* (top temperature-observed temperature)/(top temperature-rise and limit temperature); If pid algorithm calculates adds heat and adds heat less than restriction and then carry out by the heat that adds that pid algorithm calculates, if the heat that adds that pid algorithm calculates adds heat greater than restriction and then adds heat by restriction and carry out;
Step D: if observed temperature is higher than and equals top temperature, though pid algorithm calculate to add heat be what does not all carry out heating, it is zero promptly adding heat.
Wire spiral 10 temperature during the energising heating will be higher than the lehre observed temperature; Its difference depends on the insulate thermal conductivity of porcelain bead 6 and the thermal value of wire spiral 10; The thermal conductivity of insulation porcelain bead 6 is unmodifiable; Under the constant prerequisite of thermal conductivity of insulation porcelain bead 6, the thermal value of wire spiral 10 is big more, and the difference of wire spiral 10 temperature and lehre observed temperature is big more.When the lehre observed temperature is low,, also be unlikely to make wire spiral 10 temperature to reach its temperature of fusion even this temperature contrast is very big; Heat so available 100% adds heat, when the lehre observed temperature is higher, if this temperature contrast is too big; To cause wire spiral 10 temperature to reach its temperature of fusion; Add heat so limit it, add in restriction under the protection of heat software, can prolong the work-ing life of wire spiral 10 greatly.
Force fault protection to be meant that the power end at solid state relay adds an alternating current contactor; When solid state relay breakdown; When whether wire spiral 10 being switched on do not receive PLC control, PLC breaks off alternating current contactor cutting off solid state relay and wire spiral 10 power supplys, and sends warning.PLC judges that the breakdown method of solid state relay is: set suitable temperature tolerance and pid parameter; Observed temperature does not all exceed tolerance up and down at design temperature when making normal temperature control; When observed temperature exceeds design temperature twice tolerance; PLC assert that solid state relay is breakdown, sends instruction and breaks off alternating current contactor, fixes a breakdown and the artificial closure state that after PLC input reset instruction, recovers alternating current contactor again up to manual work; When PLC sends instruction disconnection alternating current contactor, send the alarm serviceman corresponding solid state relay is checked.Sfgd. is set, heat at high temperature occurs adding when out of control, when breakdown, can stop heating in order to avoid cause wire spiral 10 to damage like solid state relay.
As big current-controlled switch, no matter be solid state relay, or silicon controlled rectifier, alternating current contactor etc. all break down unavoidably.With respect to any apparatus failure, it all is more serious, unacceptable fault that wire spiral 10 blows, and the solid state relay breakdown fault sfgd. that for this reason is provided with can reduce the fault that wire spiral 10 blows.
The utility model is when bringing more benefits to quality product; Also improved the working order of wire spiral 10 especially; Make its life-span approach duration of service, use the heat insulation effect of wire spiral 10 heating can the improvement greatly lehre, transform in the case at some; Energy consumption is 1/3rd of a former lehre energy consumption, and promptly energy-conservation 67%.So, on technology, can improve the quality of products, capable of reducing energy consumption on the cost, can change difficult replacing into and not change with normal the replacing from being prone to replacing in the ME.
Embodiment 2:
The main technical schemes of present embodiment is identical with embodiment 1, and unaccounted characteristic adopts the explanation among the embodiment 1 in the present embodiment, no longer gives unnecessary details at this.The difference of present embodiment and embodiment 1 is:
As preferred technical scheme, can use electrothermal tube 13 to replace wire spiral 10 as heating unit, electrothermal tube 13 is installed on the top of heat-conducting layer 7 or the bottom of following heat-conducting layer 8.Consult Fig. 1, Fig. 2 and Fig. 7 and since electrothermal tube 13 compare with wire spiral 10 not fragile, and be convenient to the replacing, be reliable selection.When using electrothermal tube 13 to make heating unit, electrothermal tube 13 must pass insulating cotton and arrive the body of heater shell, and its tubulose stainless steel casing has destroyed heat insulation effect, so to energy-conservation unfavorable.But through overtesting, 13 pairs of energy-conservation disadvantageous effects of bringing of electrothermal tube are little, and the advantage of its safety is negligible relatively, so it is preferred technical scheme.
Should be noted that at last; Above embodiment only is used to technical scheme of the present invention is described but not to the restriction of protection domain of the present invention; Although the present invention has been done detailed description with reference to preferred embodiment; Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the essence and the scope of technical scheme of the present invention.
Claims (8)
1. wire annealing stove heat-transfer device; It is characterized in that: comprise lehre shell and the some annealing boiler tubes that equidistance is arranged; The said annealing boiler tube outside is enclosed with heat-conducting layer, and said heat-conducting layer arranged outside has heating unit, and said heat-conducting layer is high temperature resistant cast iron plate heat-conducting layer.
2. wire annealing stove heat-transfer device according to claim 1 is characterized in that: said heat-conducting layer comprises the last heat-conducting layer and following heat-conducting layer that is interlocked, and the said heat-conducting layer bottom of going up is provided with the storage tank that equidistance is arranged with following heat-conducting layer top correspondence.
3. wire annealing stove heat-transfer device according to claim 2 is characterized in that: the said heat-conducting layer top of going up is provided with horizontal stiffening web with following heat-conducting layer bottom.
4. wire annealing stove heat-transfer device according to claim 3 is characterized in that: said heating unit is an electrothermal tube, and said electrothermal tube is installed on the top of heat-conducting layer or the bottom of following heat-conducting layer.
5. wire annealing stove heat-transfer device according to claim 3; It is characterized in that: said heating unit is a wire spiral; The said heat-conducting layer outside is enclosed with insulation layer; Said insulation layer arranged outside has anti-the expansion to support, and the wire spiral that is installed with the insulation porcelain bead is set around said insulation layer and supports the outside with anti-the expansion.
6. according to claim 4 or 5 any described wire annealing stove heat-transfer devices; It is characterized in that: said wire annealing stove heat-transfer device material working direction along the line comprises the plurality of sections heat-conducting layer; Near every section heat-conducting layer of wire annealing stove ingress respectively correspondence be provided with 1 thermopair, form monolithic temperature control district; Away from two sections of wire annealing stove ingress or three sections heat-conducting layers respectively correspondence be provided with 1 thermopair, form two or three temperature control districts, said thermopair passes said heat-conducting layer and contacts with the annealing boiler tube.
7. wire annealing stove heat-transfer device according to claim 6 is characterized in that: said temperature control is provided with the expansion joint between the district, connects through high temperature resistant hook between the said expansion joint.
8. wire annealing stove heat-transfer device according to claim 7; It is characterized in that: be connected with the import positioning tie bar between the heat-conducting layer of said wire annealing stove ingress and the said lehre shell; Be provided with fireproof insulation brick between the heat-conducting layer at said wire annealing outlet of still place and the said lehre shell, enclosure heat-conducting layer arranged outside has insulating cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205508159U CN202499885U (en) | 2011-12-26 | 2011-12-26 | Heat conductor of wire annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205508159U CN202499885U (en) | 2011-12-26 | 2011-12-26 | Heat conductor of wire annealing furnace |
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| CN202499885U true CN202499885U (en) | 2012-10-24 |
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| CN2011205508159U Expired - Fee Related CN202499885U (en) | 2011-12-26 | 2011-12-26 | Heat conductor of wire annealing furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105936975A (en) * | 2016-06-27 | 2016-09-14 | 镇江耐丝新型材料有限公司 | Constant-temperature adjustable transformation control box |
| CN107283797A (en) * | 2017-07-27 | 2017-10-24 | 广州新诚生物科技有限公司 | A kind of high temperature constant temperature device for 3D printing production line |
-
2011
- 2011-12-26 CN CN2011205508159U patent/CN202499885U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105936975A (en) * | 2016-06-27 | 2016-09-14 | 镇江耐丝新型材料有限公司 | Constant-temperature adjustable transformation control box |
| CN107283797A (en) * | 2017-07-27 | 2017-10-24 | 广州新诚生物科技有限公司 | A kind of high temperature constant temperature device for 3D printing production line |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20131226 |