CN106601448A - Resin melt injection insulating method for reactor winding by means of fluidized bed method - Google Patents
Resin melt injection insulating method for reactor winding by means of fluidized bed method Download PDFInfo
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Abstract
The invention relates to the technical field of insulating treatment of reactor windings, and specifically relates to a resin melt injection insulating treatment technology for a high-pressure dry-type air-core reactor winding by means of a fluidized bed method. The technical scheme is that (1) solid resin at the normal temperature is processed into powdery solid particles, and the powdery solid particles are sent into a fluidized bed pot; (2) by means of the fluidized bed method, resin powder packed in the fluidized bed pot is loosened, and generates non-directional flow and is in a suspension state, after reaching a certain suspension height, the resin powder forms a stable fluidized-state suspension powder resin layer; (3) a workpiece is preheated in a preheating furnace; and (4) the preheated workpiece is immersed into the fluidized-state suspension powder resin layer in the step 2. By means of the fluidized bed method, resin is melted through latent heat carried by the preheated workpiece, the resin powder is repeatedly used in the fluidized bed pot, the gelatination phenomenon is not generated, the drip-dry process is not needed, the working efficiency is greatly improved, and the resin melt injection insulating method is environmentally-friendly and energy-saving.
Description
【Technical field】
The present invention relates to reactor winding insulation processing technology field, and in particular to a kind of utilization fluidized bed process carries out the technology that resin melts note insulation processing to high pressure dry air reactor winding.
【Background technology】
Varnished insulation treatment technology in electric insulation technique, the applicating history for having had upper a century." liquid --- flowing --- dipping " process of insullac liquid, naturally, rationally and into tradition.But there are the following problems for the varnished insulation processing method of traditional dry reactor winding：
First is that usual dipping solvent-free paint is mainly made up of synthetic resin, firming agent and active solvent etc..Although its kinematic viscosity is less, on workpiece, extension paint amount is also less every time, makes the film forming thickness of impregnated insulating paint be typically micrometer level, typically need to often consider repeatedly dipping, production cycle compare Long.
Second is the producer of this kind of product of current domestic production, the traditional approach for mostly being processed using varnished insulation, and or adopt wet method coating method, i.e. coiling, brush on one side the shellac varnish that insulate.These operating process paint liquid（Glue）In escaping gas environmental pollution degree it is often more serious, must have " drip-dry " operation in addition, unavoidably cause the production cycle longer and paint（Glue）The larger defect of added losses.
3rd is the synthetic resin for being often " ten thousand yuan of levels " insulating impregnating varnish, melting selected by note insulation processing selected by the main products such as high pressure dry reactor, high pressure dry transformator（High temperature insulation grade F, H）Price is also suitable therewith.But the latter during molten note without " gel " defect, be storage and using process pay guarantee the quality cost price thus can be smaller.
4th be impregnating varnish liquid it is general it is more difficult withdraws dipping tank body, be this adopt low temperature, nitrogen etc. to store the cost guaranteed the quality can be higher.
【The content of the invention】
Present invention aims to the defect and deficiency of existing insulation impregnating technology, there is provided a kind of simple structure, a kind of reactor winding of utilization fluidized bed process reasonable in design, easy to use notes insulating method with resin is molten.It utilizes fluidized bed process, " latent heat " carried after being preheated by workpiece is come molten resin, and the added losses due to resin during molten note are fewer, again without volatile matters such as organic solvents, molten note process is also within the tank body of closing entirely, therefore environmental pollution is lighter, will not produce " gel " defect, without " drip-dry " operation, production efficiency and environmental protection and energy saving are greatly improved.
A kind of reactor winding of the utilization fluidized bed process of the present invention molten note insulating method of resin, it adopts the following technical scheme that：
1）Hard resin under room temperature is processed into into powdery solid granules, is delivered in fluid bed tank；
2）Using fluidized bed process, streaming tank bottom compartment is input into the compressed gas of certain air pressure（Such as clean air, carbon dioxide, nitrogen etc.）Blowing gas stream on uniform is formed in room by air permeable plate on tank body, is allowed the toner heaped in fluid bed tank to loosen and produce omnidirectional flowing and be in suspended state, after reaching certain hoverheight, is formed the suspended powder resin bed of stable fluidisation state；
3）Workpiece in preheating furnace is entered to preheat, the melt temperature that workpiece bulk temperature reaches powdex is controlled by heat detector, form heating workpiece；
4）Will heating workpiece immersion step 2）In in the suspended powder resin bed in fluidisation state, " latent heat " of workpiece is even if wink powdex is sticked on workpiece surface, and produces in succession certain melting transition into viscous state resin liquid to workpiece infiltration and curtain coating；
5）Workpiece is transferred in vacuum, pressure treatment tank in good time, in the tank the sixth of the twelve Earthly Branches preset and control accurate temperature bakee under, continuous fusion is completely transformed into resin liquid by powdex；Then, under conditions of replacing under evacuation and plus-pressure, carry out molten note insulation processing；
6) after keeping setting time, take out workpiece and be transferred in the heating furnace of later stage process, allow the sixth of the twelve Earthly Branches the resin bed in injection workpiece entirety to be melted through heating cure；Take out after cooling, that is, complete the molten note insulation processing process of resin.
Further, the molten note insulating treatment method of the resin is as follows：
a）The three-dimensional polycondensation of thermosetting polymer resin is processed：
Under certain temperature, pressure, the active group in its component produces cross-linking reaction to thermosetting polymer synthetic resin, forms three-dimensional polycondensation.When polycondesation to a certain extent when, the viscosity of resin system can increase suddenly, will appear from not melting insoluble gel, formed gelation, there is gel point；
b）The process of kinematic viscosity when liquefying to thermosetting polymer resin：
After powdex is changed into liquid when melting note, its kinematic viscosity（η）Process effects to melting note insulation are very big, and the functional relationship that η is affected to be a kind of η=f (T) by heating-up temperature (T)；
c）Thermosetting polymer synthetic resin during from liquid to solid-state three-dimensional polycondensation, in the range of mobility（It is commonly called as in engineering as mobility）Φ（That is the inverse of kinematic viscosity η）Increase with process time and reduce, can be represented by the formula：
Φ=1/η=Ae-at
A in formula, a are constant；T is heat time heating time.
Mobility Φ increases with t and exponentially formula declines, i.e., when t increases, mobility is in non-linear reduction；
d）Firm time calculating to the three-dimensional polycondensation of resin is processed：
Thermosetting polymer synthetic resin during molten note insulation processing is carried out, appearance of the heating-up temperature (T) to gel point, the firm time with its so-called three-dimensional polycondensation（H）There is positive correlation, can be represented by the formula:H=A′e-bT
In formula, A ', b are constant, and T is heating-up temperature
Firm time H increases exponentially formula with heating-up temperature T and reduces；That is, show the appearance of gel point during molten note insulation processing, will be in nonlinear acceleration relation with heating-up temperature；
e）Control heating-up temperature (T) and heat time heating time（t）, precise control is carried out by above-mentioned steps, be close to the kinematic viscosity of viscous state resin liquid during molten note insulation processing, reach insullac varnished insulation and process suitable level.
Fluid bed tank body described further is coated with heat-insulation layer, but plant engineering is relatively simple for structure, and cost is not high.
After said structure, the present invention has the beneficial effect that：A kind of reactor winding of the utilization fluidized bed process of the present invention molten note insulating method of resin, it is using the molten note insulation processing mode of resin, using fluidized bed process, by workpiece " latent heat " entrained after preheating come molten resin, and the added losses due to powdex during molten note are fewer, again without volatile matters such as organic solvents, molten note process is also within the tank body of closing entirely, therefore environmental pollution is lighter, " gel " defect will not be produced, without " drip-dry " operation, work efficiency and environmental protection and energy saving are greatly improved.
【Description of the drawings】
Accompanying drawing described herein is for providing a further understanding of the present invention, constituting the part of the application, but do not constitute inappropriate limitation of the present invention, in the accompanying drawings：
Fig. 1 is the FB(flow block) of the present invention；
Fig. 2 is fluidized-bed structure schematic diagram in the present invention；
Fig. 3 is the function relation figure of η=f (T) in the present invention；
Fig. 4 is the graph of a relation of mobility and heated time in the present invention；
Fig. 5 is impact graph of a relation of the temperature to thermosetting polymer mobility in the present invention；
Description of reference numerals：
1st, heat workpiece；2nd, suspending resin powder；3rd, air permeable plate；4th, compressed gas.
【Specific embodiment】
Describe the present invention below in conjunction with accompanying drawing and specific embodiment in detail, illustrative examples therein and explanation are only used for explaining the present invention, but not as a limitation of the invention.
As shown in figure 1, a kind of reactor winding molten note insulating method of resin of the utilization fluidized bed process described in this specific embodiment, it adopts the following technical scheme that：
1）Hard resin under room temperature is processed into into powdery solid granules, is delivered in fluid bed tank；
2）Using fluidized bed process, streaming tank bottom compartment is input into the compressed gas 4 of certain air pressure（Such as clean air, carbon dioxide, nitrogen etc.）Blowing gas stream on uniform is formed in room by air permeable plate 3 on tank body, is allowed the toner heaped in fluid bed tank to loosen and produce omnidirectional flowing and be in suspended state, after reaching certain hoverheight, is formed the suspended powder resin bed 2 of stable fluidisation state；
3）Workpiece in preheating furnace is entered to preheat, the melt temperature that the overall temperature of workpiece reaches powdex is controlled by heat detector, form heating workpiece 1；
4）Heating workpiece 1 is immersed into step 2）In in the suspended powder resin bed 2 in fluidisation state, " latent heat " of workpiece is even if wink powdex is sticked on workpiece surface successively, and is produced in succession certain melting transition and be cast on workpiece into viscous state resin liquid, permeate；
5）Then be transferred in good time in vacuum, pressure treatment tank, the sixth of the twelve Earthly Branches presets and bakees at a temperature of control accurate in the tank, and rapid continuous fusion is changed into resin liquid by powdex, then alternately evacuation and it is stressed under the conditions of carry out molten note insulation processing；
6) after being kept for seclected time, take out workpiece and be transferred in the heating furnace of later stage process, allow the sixth of the twelve Earthly Branches to melt injection workpiece resin bed on the whole and be heating and curing.Take out after cooling, complete the molten note insulation processing process of resin.
The molten note insulating treatment method of the resin is as follows：
a）The three-dimensional polycondensation of thermosetting polymer resin is processed：
To thermosetting polymer synthetic resin under certain temperature, pressure effect, the active group in its component is produced and closes cross-linking reaction, forms three-dimensional polycondensation.When polycondesation to a certain extent when, the viscosity of resin system can increase suddenly, will appear from not melting insoluble gel, formed gelation, there is gel point；
b）The process of kinematic viscosity when liquefying to thermosetting polymer resin：
After powdex is changed into liquid when melting note, its kinematic viscosity（η）Process effects to melting note insulation are very big, and the functional relationship that η is affected to be a kind of η=f (T) by heating-up temperature (T)；
c）Thermosetting polymer synthetic resin during from liquid to solid-state three-dimensional polycondensation, in the range of mobility（It is commonly called as in engineering as mobility）Φ（That is the inverse of kinematic viscosity η）Increase with process time and reduce, can be represented by the formula：
Φ=1/η=Ae-at
A in formula, a are constant；T is heat time heating time.
Mobility Φ increases with t and exponentially formula declines, i.e., when t increases, mobility is in non-linear reduction；
d）Firm time calculating to the three-dimensional polycondensation of resin is processed：
Thermosetting polymer synthetic resin during molten note insulation processing is carried out, appearance of the heating-up temperature (T) to gel point, the firm time with its so-called three-dimensional polycondensation（H）There is positive correlation, can be represented by the formula:H=A′e-bT
In formula, A ', b are constant, and T is heating-up temperature
Firm time H increases exponentially formula with heating-up temperature T and reduces；That is, show the appearance of gel point during molten note insulation processing, will be in nonlinear acceleration relation with heating-up temperature；
e）Control heating-up temperature (T) and heat time heating time（t）, precise control is carried out by above-mentioned steps, be close to the kinematic viscosity that resin melts resin liquid during note insulation processing, reach insullac varnished insulation and process suitable level.
The fluid bed tank body is coated with heat-insulation layer, but plant engineering structure is simpler, and cost is not high.
In the present invention, it is obtain the paint-on technique in wide variety of gas-solid fluidization the sixth of the twelve Earthly Branches in work, agricultural production the sixth of the twelve Earthly Branches to melt note insulation technology approximate correlation with resin.It is belonging to the hydrodynamics flow pattern of particulate fluidization feature（Break-up bed）.The sixties in last century, China's electromechanical industries just have micro-machine copper bar rotor to apply insulation；Copper aluminium busbar surface applies insulation；And around note formula high-tension current inductor once around the application coated using fluidized bed process to surface-coated elastic cord breaker etc..Fluidized bed coating process is using the compressed gas that certain air pressure is input into from streaming tank bottom compartment（Such as clean air, carbon dioxide, nitrogen etc.）Blowing gas stream on uniform is formed in room by air permeable plate on tank body, is allowed the original powdex for heaping to loosen and produce omnidirectional flowing and be in suspended state, after reaching certain hoverheight, is formed stable fluidisation state powder bed.Now the workpiece immersion being previously heated to equivalent to powdex melt temperature is in the suspended powder resin bed of fluidisation state, the latent heat of workpiece makes powdex adhere to surface of the work and melting, curtain coating immediately.After the holding of short duration time, take out workpiece and be transferred in the heating furnace of later stage process, allow the further levelling of the resin bed being coated on workpiece and final solidification, taking-up after cooling to complete fluidisation coating.
It is observed that in the toner of omnidirectional fluidisation state, presenting just as " boiling " state when daily life is cooked congee on streaming tank room in actual mechanical process.This condition uniformly coat highly beneficial to being formed on the surface of workpiece.
It is material " is applied that fluidized bed process applies its technique purpose（Apply）" in the surface of workpiece, what fluidized bed process melted that note insulation processing expected is then resin " the molten note for making insulation processing（Melt injection）" internal layer that enters to workpiece goes.After powdex adheres to workpiece surface the certain melting casting processes of generation in fluid bed tank with fluidized regime, just will be transferred to vacuum, pressure treatment tank immediately carries out its real molten note: insulation processing process.
Under certain temperature, pressure effect, the active group in its component is produced and closes cross-linking reaction, referred to as three-dimensional polycondensation thermosetting polymer synthetic resin.When polycondesation to a certain extent when, the viscosity of resin system can increase suddenly, will appear from not melting insoluble gel, and this phenomenon is referred to as gelation, extent of reaction during gel, referred to as gel point occurs.
Gel point is to control one of key parameter of resin build polycondensation process.In practical engineering, workpiece is during the molten note insulation processing of resin, it is necessary to grasp and control the gel point of molten note material resin.Gel point can by calculating prediction, and be often then to be grasped by experiment with Instructing manufacture in engineering in theory.
As shown in figure 3, after powdex is changed into liquid when melting note, its kinematic viscosity（η）Process effects to melting note insulation are very big, and the functional relationship that η is affected to be a kind of η=f (T) by heating-up temperature (T).
As shown in figure 4, thermosetting polymer synthetic resin is during from liquid to solid-state three-dimensional polycondensation, in the range of mobility（It is commonly called as in engineering as mobility）Φ（That is the inverse of kinematic viscosity η）Increase with process time and reduce, can be represented by the formula：
Φ=1/η=Ae-at
A in formula, a are constant；T is heat time heating time.
Mobility Φ increases with t and exponentially formula declines, i.e., when t increases, mobility is in non-linear reduction.
As shown in figure 5, thermosetting polymer synthetic resin is during molten note insulation processing is carried out, and appearance of the heating-up temperature (T) to gel point, the firm time with its so-called three-dimensional polycondensation（H）There is positive correlation, can be represented by the formula:H=A′e-bT
In formula, A ', b are constant, and T is heating-up temperature
Firm time H increases exponentially formula with heating-up temperature T and reduces；That is, show the appearance of gel point during molten note insulation processing, will be in nonlinear acceleration relation with heating-up temperature.
In figure, A represents total flowing linearity curve, and B represents viscosity to mobility influence curve, and C represents influence curve of the setting rate to mobility.
And it can be seen that heating-up temperature is affected on melting the prominent of note insulation processing process.In lower temperature range, temperature plays a leading role to viscosity influence, and in below Tmax, viscosity with temperature is raised and reduced, and this is risen and the normal condition of increase with heating-up temperature using the mobility of molten note Insulating Materials in engineering before being cross-linking reaction.The key operation main points that resin melts note insulation processing are carried out, being exactly must be before the not yet fully crosslinked reaction of resin components（Must be before " gel point " occurs）Molten note process under vacuum, pressure is completed just.Two factors of above-mentioned T and t are accurately controlled, have been to obtain the key that preferable resin melts note insulation processing effect.
Have the following advantages compared with varnished insulation treatment technology with traditional electric insulation technique of the invention：
（1）" flowing " of hard resin in the present invention, can make the kinematic viscosity of " resin liquid " during molten note be close to, reach the level suitable with insullac varnished insulation process.
Traditional dipping solvent-free paint is mainly made up of synthetic resin, firming agent and active solvent etc..Although its kinematic viscosity is less, on workpiece, extension paint amount is also less every time, typically need to often consider repeatedly dipping.The molten note insulation of resin is exactly generally many component synthetic resin of solid powdery, but does not contain active solvent.So, which once melts the so-called solids content of note insulation just than larger.If using film thickness（Rather than to by the compactedness of air gap in insulation processing workpiece）The index that this can quantify is come, if weighing and comparing, the film forming thickness of impregnated insulating paint is micrometer level, and the film forming thickness that resin melts note insulation can reach grade.
（2）Dry-type high-voltage air reactor is by preferential promotion from the molten note insulating treatment process of resin, be because seeing the producer of this kind of product of current domestic production, the traditional approach for mostly being processed using varnished insulation, and or adopt wet method coating method, that is one side coiling, brushes insulation shellac varnish.These operating process paint liquid（Glue）In escaping gas environmental pollution degree it is often more serious, have " drip-dry " operation in addition, unavoidably cause the production cycle longer and paint（Glue）The larger defect of added losses.The molten note insulating treatment process process of resin workpiece adhering powder resin preliminary melt stage in the fluid bed tank, all without the need for " drip-dry ", added losses of the toner during molten note thus can be fewer.Again because powdex is without volatile matters such as organic solvents, molten note process is also within the tank body of closing entirely.So problem of environmental pollution is lighter.
（3）For molten note powdex of the bin stability to dipping insullac and comprising addO-on therapies such as firming agent, all it is the index sex chromosome mosaicism for needing also exist for examining.Generally, the two can all take freezing, protective gas（Such as nitrogen）Go down storage etc. environmental condition, to extend their normal working life.The insulating impregnating varnish of price Chang Da " ten thousand yuan of levels " selected by main product such as high pressure dry reactor, high pressure dry transformator.For storage and using process pay guarantee the quality cost price thus can be than larger.Especially when insullac liquid inevitably undergoes the repeated action of " latent heat " that impregnated workpiece is brought into, so-called " gel " phenomenon can be produced, add the upper many troubles of production.Resin melts the synthetic resin that note insulation processing is selected（Insulate heat-resisting F, H level）Although its price is suitable with impregnated insulating paint, there is no the negative effect brought by insulation processing workpiece " latent heat ", and exactly make full use of workpiece preheating to carry the latent heat for coming and remove melted powder resin, so there is no " gel "（The misalignment unless preheating temperature is too high）.Reality is the tank body during powdex can withdraw molten note at any time（Dipping tank body is withdrawn without more difficult as impregnating varnish liquid）Carry out solid recovery, packing or save so-called " economic security storehouse formula " storage of storage space.
（4）Fluid bed tank body need to typically install heat-insulation layer cladding, to ensure that the latent heat for being melt note insulation processing workpiece be enough to melt adhering powder resin.So, typically without the need for heating, equipment cost cost also will not be very high for the engineering structure of fluid bed tank.The powdex liquefied of molten note insulation is occurred mainly in vacuum, pressurized tank, although vacuum is equally the varnished insulation engineering technology means indispensable with molten note insulating process process with pressure, melts note insulation processing and higher technical requirements will be had to the two traditional modes of operation.This is that must have abundant and stable temperature to ensure by the kinematic viscosity of resin liquid after molten note insulation liquefied.The latent heat of workpiece is not enough to ensure that the full implementation of molten note process just needs supplementary heating, is melt note process workpiece under preferably temperature field to form accurate controllable allowing, occurs in the window of opportunity of molten note process with the gel point for controlling liquefied resin.In current computer control temperature technology high accurancy and precision（Can be accurate ± 0.5 DEG C）Hardware condition under, heating-up temperature T can be to accomplish more accurate controllable levels.
（5）Resin melts the expansion application of note insulation technology, be unable to do without the selection to thermosetting polymer synthetic resin kind.In addition to the key propertys such as electric, mechanical, physics, chemistry and climatic protection need to be made to consider, most prominent should be its moulded manufacturability how to adapt to fluidized bed process melt note insulating treatment process on some particular/special requirements.Due to the history of the existing generation of generation more than half of the production and application of China's fluid bed synthetic resin powder, China's electric insulation industry also possesses the insulant development ＆ production ability of at a relatively high technical merit.This is all advantageous to resin and melts cooperation and support in terms of note insulating process can obtain the raw material of abundance.
（6）Dry-type high-voltage air reactor is not that the single resin that is considered as melts the product that note insulating process is practiced.At present than the non-encapsulated high pressure dry power transformer of higher-end, from the beginning of the fifties end, temperature classification is E levels and B levels, starts to release H level products to the beginning of the sixties for China.H level non-packed dry type power transformers（OVDT's）High pressure winding, has generally adopted continuous structure at present.The turn-to-turn voltage ratio of Continuous winding is relatively low, and especially its wire turn space and line segment space are more relaxed, this just for its be considered as resin melt note insulating process present very big application space.Certainly, when wanting to many offices of high pressure dry transformer ratio high pressure dry reactor to put the demanding specifications of index, thus carrying out the molten note insulation processing of resin to it, it is necessary to consider possess vacuum condition in fluid bed tank.
（7）Resin of the present invention melts one unique advantage of note insulation processing technology：The formula of resin variety, compositional selecting can be polynary, that is, commonly referred resin modified can be relatively more flexible.To compare the H level non-packed dry type power transformers of main flow at present（OVDT）As a example by, it may be considered that bondd using H levels silicone varnish or diphenyl ether paint（It is again or sintering insulated using polyimide resin）Double glass fiber bag electromagnetic wire make continuous high pressure winding, then support the use the modified organic siliconresin of polyimide resin and make powder, carry out a kind of molten note insulation processing of H levels non-encapsulated high pressure dry power transformer high pressure winding.Resin melts note insulation processing can be to carry out operation more than once on by insulation processing workpiece, it is only to strengthen previous molten note insulation processing effect that purpose is unrestricted, but expand using resin variety formula, the advantage of the aspect such as color and luster or even special safeguard function, even it is the protective capacities that the dry-type transformer such as chemical industry, peculiar to vessel, mine increases its winding to the whole machine of transformator.
A kind of reactor winding of the utilization fluidized bed process of the present invention molten note insulating method of resin, it is using the molten insulation processing mode of resin, using fluidized bed process, by heat of the workpiece in processing itself come molten resin, and due to added losses of the toner during molten note thus can be fewer, again without volatile matters such as organic solvents, molten note process is also within the tank body of closing entirely, therefore environmental pollution is lighter, " gel " will not be produced, without " drip-dry " operation, work efficiency and environmental protection and energy saving are greatly improved
The above is only the better embodiment of the present invention, therefore the equivalence changes done of all constructions according to described in present patent application scope, feature and principle or modification, it is included in the range of present patent application.
Claims (3)
1. a kind of reactor winding of utilization fluidized bed process notes insulating method with resin is molten, it is characterised in that：It adopts the following technical scheme that：
1）Hard resin under room temperature is processed into into powdery solid granules, is delivered in fluid bed tank；
2）Using fluidized bed process, streaming tank bottom compartment is input into the compressed gas of certain air pressure（Such as clean air, carbon dioxide, nitrogen etc.）Blowing gas stream on uniform is formed in room by air permeable plate on tank body, is allowed the toner heaped in streaming tank to loosen and produce omnidirectional flowing and be in suspended state, after reaching certain hoverheight, is formed the suspending resin powder bed of stable fluidisation state；
3）Workpiece is preheated in preheating furnace, the melt temperature that the overall temperature of workpiece reaches toner is controlled by heat detector, formed heating workpiece；
4）Will heating workpiece immersion step 2）In in fluidisation state suspending resin powder bed in, " latent heat " of workpiece makes toner constantly adhere to workpiece surface immediately, and is progressively melt into viscous state resin liquid, on workpiece produce curtain coating with infiltration；
5）Work is transferred in vacuum, pressure treatment tank in good time, in the tank the sixth of the twelve Earthly Branches preset and control accurate temperature bakee under, continuous fusion is all transformed into resin liquid by powdex quickly；Then, alternately evacuation and it is stressed under the conditions of, launch molten note insulation processing process；
6) after being kept for the time of setting, workpiece is transferred in the heating furnace of later stage process, allows molten note to complete its macromolecular compound polycondesation process to the resin in workpiece deep layer and finally solidify；Take out after cooling, that is, complete the molten note insulation processing overall process of workpiece resin.
2. a kind of reactor winding of utilization fluidized bed process according to claim 1 notes insulating method with resin is molten, it is characterised in that：The molten note insulating treatment method of the resin, using following process method step：Which mainly controls some gongwus, chemical parameters during the molten note of resin；
a）The three-dimensional polycondensation of thermosetting polymer resin is processed：
Under certain temperature, pressure effect, the active group in its component produces cross-linking reaction to thermosetting polymer synthetic resin, forms three-dimensional polycondensation；When polycondesation to a certain extent when, the viscosity of resin system can increase suddenly, will appear from not melting insoluble gel, formed gelation, there is gel point；
b）The process of kinematic viscosity when liquefying to thermosetting polymer resin：
After powdex is changed into liquid when melting note, its kinematic viscosity（η）Process effects to melting note insulation are very big, and the functional relationship that η is affected to be a kind of η=f (T) by heating-up temperature (T)；
c）Thermosetting polymer synthetic resin during from liquid to solid-state three-dimensional polycondensation, in the range of mobility（It is commonly called as in engineering as mobility）Φ（That is the inverse of kinematic viscosity η）Increase with process time and reduce, can be represented by the formula：
Φ=1/η=Ae-at
A in formula, a are constant；T is heat time heating time；
Mobility Φ increases with t and exponentially formula declines, i.e., when t increases, mobility is in non-linear reduction；
d）Firm time calculating to the three-dimensional polycondensation of resin is processed：
Thermosetting polymer synthetic resin during molten note insulation processing is carried out, appearance of the heating-up temperature (T) to gel point, the firm time with its so-called three-dimensional polycondensation（H）There is positive correlation, can be represented by the formula:H=A′e-bT
In formula, A ', b are constant, and T is heating-up temperature；
Firm time H increases exponentially formula with heating-up temperature T and reduces；That is, show the appearance of gel point during molten note insulation processing, will be in nonlinear acceleration relation with processing temperature；
e）Control heating-up temperature (T) and heat time heating time（t）, the kinematic viscosity of resin liquid during molten note insulation processing is close to, reached the level suitable with insullac impregnation process.
3. a kind of reactor winding of utilization fluidized bed process according to claim 1 notes insulating method with resin is molten, it is characterised in that：The fluid bed tank body is coated with heat-insulation layer.
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| US20070000131A1 (en) * | 2005-05-04 | 2007-01-04 | Sonion Nederland Bv | Solid coated coil and a method of coating a coil |
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