CN106601448B - A kind of molten note insulating method of resin of the reactor winding using fluidized bed process - Google Patents
A kind of molten note insulating method of resin of the reactor winding using fluidized bed process Download PDFInfo
- Publication number
- CN106601448B CN106601448B CN201510663931.4A CN201510663931A CN106601448B CN 106601448 B CN106601448 B CN 106601448B CN 201510663931 A CN201510663931 A CN 201510663931A CN 106601448 B CN106601448 B CN 106601448B
- Authority
- CN
- China
- Prior art keywords
- resin
- fluidized bed
- workpiece
- molten note
- molten
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention relates to reactor winding insulation processing technology fields, the molten note insulation processing technology of resin is carried out to high pressure dry air reactor winding using fluidized bed process more particularly to a kind of, it is adopted the following technical scheme that: 1) hard resin under room temperature being processed into powdery solid granules, sent in fluidized bed tank；2) fluidized bed process is used, the toner heaped in fluidized bed tank is allowed to loosen and generates omnidirectional flowing in suspended state, forms stable fluidisation state suspended powder resin layer after reaching certain hoverheight；3) workpiece is preheated in preheating furnace；4) pre-add heated work pieces are immersed in suspending resin powder bed of the step 2 in fluidisation state；It utilizes fluidized bed process, and " latent heat " carried after being preheated by workpiece will not generate " gelatinization " phenomenon come molten resin, toner Reusability in fluidized bed tank, is also not necessarily to " drip-dry " process, greatly improves working efficiency and environmental protection and energy saving.
Description
[technical field]
The present invention relates to reactor winding insulation processing technology fields, and in particular to a kind of to be pressed dry using fluidized bed process to height
Formula air reactor winding carries out the technology of the molten note insulation processing of resin.
[background technique]
Varnished insulation processing technique in electric insulation technique has had the applicating history of upper a century." the liquid for the paint solution that insulate
Body --- flowing --- dipping " process, it is natural, rationally and have become tradition.But the varnished insulation of traditional dry reactor winding
There are the following problems for processing method:
First is usual dipping solvent-free paint mainly by synthetic resin, the composition such as curing agent and active solvent.Although its
Kinematic viscosity is smaller, but extension paint amount is also less on workpiece every time, and making the film forming thickness of impregnated insulating paint is usually micron order water
It is flat, it generally need to often consider repeatedly to impregnate, the production cycle is longer.
Second is the producer of current domestic production this kind of product, mostly using the traditional approach of varnished insulation processing, and or
It is that insulation shellac varnish is brushed using wet process coating method, i.e. one side coiling on one side.Volatility in these operating process paint solutions (glue)
Gas environmental pollution degree is often more serious, must there is " drip-dry " process in addition, unavoidably causes the production cycle longer and paints
The biggish defect of (glue) added losses.
It is often " ten thousand yuan of grades " insulation that third, which is selected by the main products such as high pressure dry reactor, high pressure dry transformer,
It is also suitable therewith to melt synthetic resin (high temperature insulation grade F, H) price selected by note insulation processing for impregnating varnish.But the latter is molten
Without " gelatinization " defect during note, for store and use process is paid guarantee the quality cost price thus can be smaller.
The fourth is that dipping paint solution is generally more difficult withdraws dipping tank body, to be guaranteed the quality thus using storages such as low temperature, nitrogen at
This meeting is relatively high.
[summary of the invention]
It is an object of the invention to be directed to the defect and deficiency of existing insulation impregnating technology, it is simple to provide a kind of structure, if
Count a kind of molten note insulating method of reactor winding resin using fluidized bed process reasonable, easy to use.It utilizes fluidized bed
Method, " latent heat " carried after being preheated by workpiece is come molten resin, and the added losses ratio due to resin during molten note
It is less, and without volatile matters such as organic solvents, molten note process is also within closed tank body entirely, therefore environmental pollution
Compare light, " gelatinization " defect will not be generated, without " drip-dry " process, greatly increases the production efficiency and environmental protection and energy saving.
A kind of reactor winding using fluidized bed process of the present invention molten note insulating method of resin, it is using as follows
Technical solution:
1) hard resin under room temperature is processed into powdery solid granules, sent in fluidized bed tank；
2) use fluidized bed process, streaming tank bottom compartment inputs the compressed gas of certain air pressure, compressed gas be clean air,
Carbon dioxide or nitrogen, compressed gas form uniformly upper blowing gas stream in tank body upper chamber by air permeable plate, allow the heap in streaming tank
The toner of collection loosen and generate omnidirectional flowing and in suspended state, reach formed after certain hoverheight it is stable
Fluidize the suspending resin powder bed of state；
3) workpiece is preheated in preheating furnace, the temperature that workpiece entirety is controlled by heat detector reaches resin-oatmeal
The melting temperature at end forms heating workpiece；
4) it will heat in the suspending resin powder bed that workpiece immerses in step 2 in fluidisation state, " latent heat " of workpiece makes immediately
Toner constantly adheres to workpiece surface, and is gradually melt into viscous state resin liquid, and curtain coating and infiltration are generated on workpiece；
5) it is transferred to vacuum, in pressure treatment tank, under the temperature of the preset regulation in tank bakes, powdex
By continuous fusion, all it is transformed into resin liquid；Then, alternately vacuumize with it is stressed under the conditions of, molten note insulation position is unfolded
Reason process；
6) after the time for keeping setting, workpiece is transferred in the heating furnace of post-processing, and molten note is allowed to arrive in workpiece deep layer
Resin is completed its high-molecular compound polycondesation process and is finally solidified；It is taken out after cooling, i.e. completion workpiece resin is molten
Infuse insulation processing overall process.
Further, the molten note insulating treatment method of the resin is as follows:
The molten note insulating treatment method of resin, using following process method step:
A) three-dimensional polycondensation of thermosetting polymer resin is handled:
For thermosetting polymer synthetic resin under certain temperature, pressure effect, the active group in component generates friendship
Connection reaction, forms three-dimensional polycondensation；When polycondesation to a certain extent when, the viscosity of resin system can increase suddenly, will go out
It does not melt insoluble gel now, forms gelation, gel point occur；
The processing of kinematic viscosity when b) liquefying to thermosetting polymer resin:
After powdex becomes liquid when melting note, kinematic viscosity (η) is influenced to be a kind of η=f (T) letter by heating temperature (T)
Number relationship；
C) mobility, Φ of the thermosetting polymer synthetic resin during from liquid to solid-state three-dimensional polycondensation, in range
Increase with heating time and reduce, can be represented by the formula: wherein: mobility is commonly called as mobility in engineering；Φ refers to kinematic viscosity η
Inverse；
Φ=1/η=Ae-at
A in formula, a are constant；T is heating time；
Mobility Φ is with t increase and when exponential decline, i.e. t increase, and mobility is in non-linear reduction；
D) to the firm time calculation processing of the three-dimensional polycondensation of resin:
For thermosetting polymer synthetic resin during carrying out molten note insulation processing, heating temperature (T) goes out gel point
It is existing, there is positive correlation with the firm time (H) of its so-called three-dimensional polycondensation, can be represented by the formula: H=A ' e-bT
A ', b are constant in formula, and T is heating temperature；
Firm time H increases exponential reduction with heating temperature T；That is, show gel point during molten note insulation processing
Appearance, will with processing temperature be in nonlinear acceleration relationship.
Fluidized bed tank body described further is coated with insulating layer, but plant engineering is relatively simple for structure, and cost is not high.
After adopting the above structure, the invention has the following beneficial effects: a kind of reactor using fluidized bed process of the present invention
The winding molten note insulating method of resin, it is using the molten note insulation processing mode of resin, using fluidized bed process, by workpiece in pre-add
Entrained " latent heat " carrys out molten resin after heat, and since added losses of powdex during molten note are fewer, and not
Containing volatile matters such as organic solvents, molten note process is also within closed tank body entirely, therefore environmental pollution is lighter, no
" gelatinization " defect can be generated, without " drip-dry " process, greatly improves working efficiency and environmental protection and energy saving.
[Detailed description of the invention]
Described herein the drawings are intended to provide a further understanding of the invention, constitutes part of this application, but
It does not constitute improper limitations of the present invention, in the accompanying drawings:
Fig. 1 is flow diagram of the invention；
Fig. 2 is fluidized-bed structure schematic diagram in the present invention；
Fig. 3 is the function relation figure of η=f in the present invention (T)；
Fig. 4 is the relational graph of mobility and heated time in the present invention；
Fig. 5 is influence relational graph of the temperature to thermosetting polymer mobility in the present invention；
Description of symbols:
1, workpiece is heated；2, suspending resin powder；3, air permeable plate；4, compressed gas.
[specific embodiment]
Come that the present invention will be described in detail below in conjunction with attached drawing and specific embodiment, illustrative examples therein and says
It is bright to be only used to explain the present invention but not as a limitation of the invention.
As shown in Figure 1, a kind of molten note of resin of the reactor winding using fluidized bed process described in present embodiment
Insulating method, it is adopted the following technical scheme that:
1) hard resin under room temperature is processed into powdery solid granules, sent in fluidized bed tank；
2) use fluidized bed process, streaming tank bottom compartment inputs the compressed gas of certain air pressure, compressed gas be clean air,
Carbon dioxide or nitrogen, compressed gas form uniformly upper blowing gas stream in tank body upper chamber by air permeable plate, allow the heap in streaming tank
The toner of collection loosen and generate omnidirectional flowing and in suspended state, reach formed after certain hoverheight it is stable
Fluidize the suspending resin powder bed of state；
3) workpiece is preheated in preheating furnace, the temperature that workpiece entirety is controlled by heat detector reaches resin-oatmeal
The melting temperature at end forms heating workpiece；
4) it will heat in the suspending resin powder bed that workpiece immerses in step 2 in fluidisation state, " latent heat " of workpiece makes immediately
Toner constantly adheres to workpiece surface, and is gradually melt into viscous state resin liquid, and curtain coating and infiltration are generated on workpiece；
5) it is transferred to vacuum, in pressure treatment tank, under the temperature of the preset regulation in tank bakes, powdex
By continuous fusion, all it is transformed into resin liquid；Then, alternately vacuumize with it is stressed under the conditions of, molten note insulation position is unfolded
Reason process；
6) after the time for keeping setting, workpiece is transferred in the heating furnace of post-processing, and molten note is allowed to arrive in workpiece deep layer
Resin is completed its high-molecular compound polycondesation process and is finally solidified；It is taken out after cooling, i.e. completion workpiece resin is molten
Infuse insulation processing overall process.
The molten note insulating treatment method of the resin is as follows:
A) three-dimensional polycondensation of thermosetting polymer resin is handled:
To thermosetting polymer synthetic resin under certain temperature, pressure effect, the active group in component is generated
Cross-linking reaction is closed, three-dimensional polycondensation is formed.When polycondesation to a certain extent when, the viscosity of resin system can increase suddenly,
To occur not melting insoluble gel, forms gelation, gel point occur；
The processing of kinematic viscosity when b) liquefying to thermosetting polymer resin:
After powdex becomes liquid when melting note, kinematic viscosity (η) is very big to the process effects of molten note insulation, and
η is influenced to be a kind of η=f (T) functional relation by heating temperature (T)；
C) mobility (work of thermosetting polymer synthetic resin during from liquid to solid-state three-dimensional polycondensation, in range
It is commonly called as in journey as mobility) Φ (i.e. the inverse of kinematic viscosity η) reduction with heating time growth, it can be represented by the formula:
Φ=1/η=Ae-at
A in formula, a are constant；T is heating time；
Mobility Φ is with t increase and when exponential decline, i.e. t increase, and mobility is in non-linear reduction；
D) to the firm time calculation processing of the three-dimensional polycondensation of resin:
For thermosetting polymer synthetic resin during carrying out molten note insulation processing, heating temperature (T) goes out gel point
It is existing, there is positive correlation with the firm time (H) of its so-called three-dimensional polycondensation, can be represented by the formula: H=A ' e-bT
A ', b are constant in formula, and T is heating temperature；
Firm time H increases exponential reduction with heating temperature T；That is, show gel point during molten note insulation processing
Appearance, will with heating temperature be in nonlinear acceleration relationship；
E) heating temperature (T) and heating time (t) are controlled, is accurately controlled through the above steps, keeps the molten note of resin exhausted
The kinematic viscosity of resin liquid approaches, reaches the comparable level of insulated paint varnished insulation processing in edge treatment process.
The fluidized bed tank body is coated with insulating layer, but plant engineering structure is simpler, and cost is not high.
In the present invention, with the molten note insulation technology approximate correlation of resin be obtained in work, agricultural production it is widely applied
Paint-on technique in gas-solid fluidization.It is the hydrodynamics flow pattern (break-up bed) for belonging to particulate fluidization feature.Last century six
The ten's, China's electromechanical industries just have the coating insulation of micro-machine copper bar rotor；The coating insulation of copper aluminium busbar surface；And
Around note formula high-tension current inductor once around the application to the application fluidized bed process coating such as surface coating elastic cord breaker.Fluidized bed
Coating is logical using the compressed gas (such as clean air, carbon dioxide, nitrogen) for inputting certain air pressure from streaming tank bottom compartment
It crosses air permeable plate and forms uniformly upper blowing gas stream in tank body upper chamber, allow the powdex heaped originally to loosen and generate omnidirectional flowing
And it is in suspended state, stable fluidisation state powder bed is formed after reaching certain hoverheight.At this time being previously heated to phase
In the suspended powder resin layer that the workpiece of powdex melting temperature immerses in fluidisation state, the latent heat of workpiece makes powder immediately
Last resin adheres to workpiece surface and melting, curtain coating.After being kept for of short duration time, the heating that workpiece is transferred to post-processing is taken out
It in furnace, allows coated in the further levelling of resin layer on workpiece and finally solidification, is taken out after cooling, complete fluidisation and coat.
It is observed that the toner in omnidirectional fluidisation state, is presented on streaming tank room in actual mechanical process
It obtains like " boiling " state when daily life is cooked congee.This condition, which forms uniform coating to the surface in workpiece, extremely to be had
Benefit.
It is to make material " apply (Apply) " in the surface of workpiece that fluidized bed process, which applies the purpose of its technique, and the molten note of fluidized bed process is exhausted
What edge processing was expected is then that the resin " molten note (Melt injection) " of insulation processing is made to enter to the internal layer of workpiece to go.
After powdex is adhered to workpiece surface and generated certain melting casting processes in fluidized bed tank with fluidized regime, just to stand
It is transferred to vacuum, pressure treatment tank carries out its really molten note: insulation processing process.
For thermosetting polymer synthetic resin under certain temperature, pressure effect, the active group in component generates pass
Cross-linking reaction, referred to as three-dimensional polycondensation.When polycondesation to a certain extent when, the viscosity of resin system can increase suddenly,
Insoluble gel is not melted into appearance, this phenomenon is known as gelation, extent of reaction when gel, referred to as gel point occurs.
Gel point is one of the key parameter for controlling resin figure polycondensation process.In practical engineering, workpiece is in the molten note of resin
During insulation processing, it is necessary to grasp and control the gel point of molten note material resin.Theoretically gel point can pass through calculating
Prediction, and be often then to be grasped by experiment with Instructing manufacture in engineering.
As shown in figure 3, after powdex becomes liquid when melting note, technical process of the kinematic viscosity (η) to molten note insulation
Influence it is very big, and η influenced by heating temperature (T) be a kind of η=f (T) functional relation.
As shown in figure 4, thermosetting polymer synthetic resin is during from liquid to solid-state three-dimensional polycondensation, in range
Mobility (is commonly called as mobility) Φ (i.e. the inverse of kinematic viscosity η) and increases with process time and reduce in engineering, can use following formula table
Show:
Φ=1/η=Ae-at
A in formula, a are constant；T is heating time.
Mobility Φ is with t increase and when exponential decline, i.e. t increase, and mobility is in non-linear reduction.
As shown in figure 5, thermosetting polymer synthetic resin is during carrying out molten note insulation processing, heating temperature (T) is right
The appearance of gel point has positive correlation with the firm time (H) of its so-called three-dimensional polycondensation, can be represented by the formula: H=A ' e-bT
A ', b are constant in formula, and T is heating temperature
Firm time H increases exponential reduction with heating temperature T；That is, show gel point during molten note insulation processing
Appearance, will with heating temperature be in nonlinear acceleration relationship.
A indicates that total flowing linearity curve, B indicate viscosity to mobility influence curve in figure, and C indicates setting rate to flowing
The influence curve of property.
And it can be seen from the figure that heating temperature influences molten the prominent of note insulation processing process.In lower temperature range
Interior, temperature plays a leading role to viscosity influence, in Tmax hereinafter, viscosity with temperature is increased and reduced, before this is cross-linking reaction
Risen and increased normal condition using the mobility of molten note Insulating Materials with heating temperature in engineering.Carry out the molten note insulation of resin
The key operation main points of processing are exactly (must must occur at " gel point " before the not yet fully crosslinked reaction of resin components
The molten note process under vacuum, pressure is just completed before).Two factors of above-mentioned T and t have been accurately controlled, have been to obtain preferable resin
The key of molten note insulation processing effect.
The present invention has the following advantages compared with the varnished insulation processing technique in traditional electric insulation technique:
(1) " flowing " of the hard resin in the present invention can be such that the kinematic viscosity of " resin liquid " during molten infuse connects
Closely, reach and handle comparable level with insulated paint varnished insulation.
Traditional dipping is with solvent-free paint mainly by synthetic resin, the composition such as curing agent and active solvent.Although it is flowed
Viscosity is smaller, but extension paint amount is also less on workpiece every time, generally need to often consider repeatedly to impregnate.The molten note of resin, which insulate, is usually exactly
Solid powdery multiple groups part synthetic resin, but be free of active solvent.So the so-called solid content of primary molten note insulation just compares
It is larger.If the index that this can quantify with film thickness (rather than to by compactedness of air gap in insulation processing workpiece) come
It measures if comparing, the film forming thickness of impregnated insulating paint is micrometer level, and the film forming thickness of the molten note insulation of resin can be with
Reach grade.
(2) dry-type high-voltage air reactor selects the molten note insulating treatment process of resin by preferential promotion, is worked as because seeing
The producer of preceding domestic production this kind of product mostly using the traditional approach of varnished insulation processing, and or uses wet process gluing side
Insulation shellac varnish is brushed in method, i.e. one side coiling on one side.Escaping gas environmental pollution journey in these operating process paint solutions (glue)
Degree is often more serious, there is " drip-dry " process in addition, unavoidably causes the production cycle longer and paint (glue) added losses are biggish scarce
It falls into.Molten note insulating treatment process process workpiece adhering powder resin and the preliminary melt stage in fluidized bed tank of resin, is all not necessarily to
" drip-dry ", added losses thus meeting of the toner during molten note are fewer.Again because powdex is without organic solvent etc.
Volatile matter, molten note process are also within closed tank body entirely.So problem of environmental pollution is lighter.
(3) molten note of the storage stability to dipping insulated paint and comprising addO-on therapies such as curing agent with powdex come
It says, is all the index problem for also needing examination.In general, the two can all take cryogenic freezing, protective gas (such as nitrogen)
Etc. environmental conditions go down storage, to extend their normal working life.The mainstreams such as high pressure dry reactor, high pressure dry transformer
The insulating impregnating varnish of price Chang Da selected by product " ten thousand yuan of grades ".For store and use process pay guarantee the quality cost price because
And it can be bigger.Especially when insulation paint solution is inevitably subjected to the repeated action of " latent heat " that impregnated workpiece is brought into,
So-called " gelatinization " phenomenon can be generated, the upper many troubles of production are added.Synthetic resin (the insulation that the molten note insulation processing of resin is selected
It is F, H grade heat-resisting) although its price and impregnated insulating paint are suitable, there is no negative brought by insulation processing workpiece " latent heat "
It influences, and exactly makes full use of workpiece preheating to take bring latent heat and remove melted powder resin, so (being removed there is no " gelatinization " problem
Non- preheating temperature is excessively high and misalignment).Reality is tank body during powdex can withdraw molten note at any time (without such as dipping
Paint solution like that it is more difficult withdraws dipping tank body) carry out solid recycling, packing or save storage space so-called " economic security storehouse formula "
Storage.
(4) fluidized bed tank body need to generally install insulating layer cladding, to ensure that the latent heat for being melt note insulation processing workpiece is enough
Melt adhering powder resin.So the engineering structure of fluidized bed tank is generally not necessarily to heat, equipment cost cost will not be very high.
The powdex liquefied of molten note insulation occurs mainly in vacuum, in pressurized tank, although it is varnished insulation that vacuum is same as pressure
The indispensable engineering technology means with molten note insulating process process, but the mode of operation that molten note insulation processing is traditional to the two
Higher technical requirements will be had.This be must be had by the kinematic viscosity of resin liquid after molten note insulation liquefied it is abundant and stable
Temperature guarantees.The latent heat of workpiece is not enough to ensure that the full implementation of molten note process just needs supplementary heating, precisely controllable to be formed
Allow be melt note processing workpiece be under preferable temperature field, appear in molten note process most to control the gel point of liquefied resin
The good period.Under the hardware condition of current computer control temperature technology high accurancy and precision (can be ± 0.5 DEG C accurate), heating temperature T is can be with
Accomplish more accurate controllable levels.
(5) the expansion application of the molten note insulation technology of resin, be unable to do without the selection to thermosetting polymer synthetic resin kind.
Other than the basic performances such as electrical, mechanical, physics, chemistry and climatic protection need to be made to consider, most outstanding should be its molding
How craftsmanship adapts to some particular/special requirements on the molten note insulating treatment process of fluidized bed process.Since China's fluidized bed synthesizes
The history of the existing generation of generation more than half of the production and application of toner, China's electric insulation industry also have quite high technical level
Insulating materials development & production ability.This, which is all advantageous to the molten note insulating process of resin, can obtain matching in terms of sufficient raw material
It closes and supports.
(6) dry-type high-voltage air reactor is not the single production for being considered as the molten note insulating process of resin and practicing
Product.Non-encapsulated high pressure dry power transformer more high-end at present, since the fifties end, temperature classification is E grades in China
With B grades, until start the beginning of the sixties release H grades of products.H grades of non-packed dry type power transformer (OVDT's) high-voltage windings, at present
Continuous structure is generallyd use.The turn-to-turn voltage of Continuous winding is relatively low, especially its wire turn space and line segment space
More relaxed, this is just considered as the molten note insulating process of resin for it and presents very big application space.Certainly, to arrive high pressure
Dry-type transformer demanding specifications of partial discharge index more than high pressure dry reactor, thus to the molten note insulation of carry out resin
When processing, it is necessary to consider have vacuum condition in fluidized bed tank.
(7) molten note one unique advantage of insulation processing technology of resin of the present invention is: the formula of resin variety, and component selection can be with
It is polynary, that is, commonly referred resin modified can be relatively more flexible and convenient.To compare the H grade non-packed dry type of mainstream at present
For power transformer (OVDT), it may be considered that using H grade silicone varnish or diphenyl ether paint bonding (and or use polyimides tree
Rouge is sintering insulated) double glass fiber packet electromagnetic wire continuous high pressure winding is made, it is modified then to match polyimide resin
Organic siliconresin powder is made, carry out a kind of molten note insulation position of H grades of non-encapsulated high pressure dry power transformer high-voltage winding
Reason.The molten note insulation processing of resin can also carry out operation more than once on by insulation processing workpiece, and purpose is unrestricted to be only
Enhance previous molten note insulation processing effect, but expands and utilize resin variety formula, color or even special safeguard function etc.
The advantage of aspect, even increase the protective capacities of its winding to transformer complete machine for the dry-type transformers such as chemical industry, peculiar to vessel, mine.
A kind of reactor winding using fluidized bed process of the present invention molten note insulating method of resin, it uses resin
Molten insulation processing mode, using fluidized bed process, by heat of the workpiece in processing itself come molten resin, and due to resin-oatmeal
Added losses thus meeting of the end during molten note are fewer, and without volatile matters such as organic solvents, molten note process is also in entirely
Within closed tank body, therefore environmental pollution is lighter, will not generate " gelatinization ", without " drip-dry " process, greatly mentions
High working efficiency and environmental protection and energy saving
The above description is only a preferred embodiment of the present invention, thus it is all according to the configuration described in the scope of the patent application of the present invention,
The equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.
Claims (3)
1. a kind of reactor winding using fluidized bed process molten note insulating method of resin, it is characterised in that: it uses following
Technical solution:
1) hard resin under room temperature is processed into powdery solid granules, sent in fluidized bed tank；
2) use fluidized bed process, fluidized bed tank bottom room inputs the compressed gas of certain air pressure, compressed gas be clean air,
Carbon dioxide or nitrogen, compressed gas form uniformly upper blowing gas stream in tank body upper chamber by air permeable plate, allow in fluidized bed tank
The toner of heap loosens and generates omnidirectional flowing in suspended state, forms stabilization after reaching certain hoverheight
Fluidisation state suspending resin powder bed；
3) workpiece is preheated in preheating furnace, the temperature that workpiece entirety is controlled by heat detector reaches toner
Melting temperature forms heating workpiece；
4) it will heat in the suspending resin powder bed that workpiece immerses in step 2 in fluidisation state, " latent heat " of workpiece makes resin immediately
Powder constantly adheres to workpiece surface, and is gradually melt into viscous state resin liquid, and curtain coating and infiltration are generated on workpiece；
5) it is transferred to vacuum, in pressure treatment tank, under the temperature of the preset regulation in tank bakes, powdex will be even
Continuous melting, is all transformed into resin liquid；Then alternately vacuumize with it is stressed under the conditions of, molten note insulation processing mistake is unfolded
Journey；
6) after the time for keeping setting, workpiece is transferred in the heating furnace of post-processing, and molten note is allowed to arrive the resin in workpiece deep layer
It completes its high-molecular compound polycondesation process and finally solidifies；It is taken out after cooling, i.e. the molten note of completion workpiece resin is exhausted
Edge handles overall process.
2. a kind of reactor winding using fluidized bed process according to claim 1 molten note insulating method of resin, special
Sign is: the molten note insulating treatment method of resin, using following process method step:
A) three-dimensional polycondensation of thermosetting polymer resin is handled:
For thermosetting polymer synthetic resin under certain temperature, pressure effect, it is anti-that the active group in component generates crosslinking
It answers, forms three-dimensional polycondensation；When polycondesation to a certain extent when, the viscosity of resin system can increase suddenly, will occur not
Insoluble gel is melted, gelation is formed, gel point occurs；
The processing of kinematic viscosity when b) liquefying to thermosetting polymer resin:
After powdex becomes liquid when melting note, kinematic viscosity (η) is influenced to be a kind of η=f (T) function pass by heating temperature (T)
System；
C) thermosetting polymer synthetic resin is during from liquid to solid-state three-dimensional polycondensation, and the mobility, Φ in range are with adding
Hot time increases and reduces, and can be represented by the formula: wherein: mobility is commonly called as mobility in engineering；Φ refers to falling for kinematic viscosity η
Number；
Φ=1/η=Ae-at
A in formula, a are constant；T is heating time；
Mobility Φ is with t increase and when exponential decline, i.e. t increase, and mobility is in non-linear reduction；
D) to the firm time calculation processing of the three-dimensional polycondensation of resin:
Thermosetting polymer synthetic resin is during carrying out molten note insulation processing, appearance of the heating temperature (T) to gel point, with
The firm time (H) of its so-called three-dimensional polycondensation has positive correlation, can be represented by the formula: H=A ' e-bT
A ', b are constant in formula, and T is heating temperature；
Firm time H increases exponential reduction with heating temperature T；That is, show going out for gel point during molten note insulation processing
It is existing, it will be in nonlinear acceleration relationship with processing temperature.
3. a kind of reactor winding using fluidized bed process according to claim 1 molten note insulating method of resin, special
Sign is: the fluidized bed tank body is coated with insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510663931.4A CN106601448B (en) | 2015-10-15 | 2015-10-15 | A kind of molten note insulating method of resin of the reactor winding using fluidized bed process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510663931.4A CN106601448B (en) | 2015-10-15 | 2015-10-15 | A kind of molten note insulating method of resin of the reactor winding using fluidized bed process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106601448A CN106601448A (en) | 2017-04-26 |
| CN106601448B true CN106601448B (en) | 2019-02-15 |
Family
ID=58553109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510663931.4A Active CN106601448B (en) | 2015-10-15 | 2015-10-15 | A kind of molten note insulating method of resin of the reactor winding using fluidized bed process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106601448B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070000131A1 (en) * | 2005-05-04 | 2007-01-04 | Sonion Nederland Bv | Solid coated coil and a method of coating a coil |
| CN1986488A (en) * | 2006-12-08 | 2007-06-27 | 安泰科技股份有限公司 | Coating for soft magnetic alloy core and its spraying process |
| CN104356602A (en) * | 2014-11-29 | 2015-02-18 | 江苏中鹏新材料股份有限公司 | Epoxy powder for packaging medium-low-voltage bus bar |
-
2015
- 2015-10-15 CN CN201510663931.4A patent/CN106601448B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070000131A1 (en) * | 2005-05-04 | 2007-01-04 | Sonion Nederland Bv | Solid coated coil and a method of coating a coil |
| CN1986488A (en) * | 2006-12-08 | 2007-06-27 | 安泰科技股份有限公司 | Coating for soft magnetic alloy core and its spraying process |
| CN104356602A (en) * | 2014-11-29 | 2015-02-18 | 江苏中鹏新材料股份有限公司 | Epoxy powder for packaging medium-low-voltage bus bar |
Non-Patent Citations (1)
| Title |
|---|
| 树脂浇注配电变压器;陈宗旻;《绝缘材料通讯》;19821231(第6期);43-49 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106601448A (en) | 2017-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102294474B (en) | Ferrosilicon material and mu50 ferrosilicon magnetic powder core manufacturing method | |
| CN104119644B (en) | Encapsulating material for transformer | |
| CN107938023A (en) | A kind of cable cover(ing) self-repair material and preparation method | |
| CN101864059A (en) | Heat-resistant epoxy anhydride resin suitable for vacuum pressure impregnation (VPI) and preparing method and application thereof | |
| CN106374690A (en) | Stator wire rod insulation onsite repairing method for large generator | |
| CN113991956B (en) | Insulation processing method of motor and stator winding of new-energy electric automobile motor | |
| CN102303115B (en) | Manufacturing method of ferrum silicon material and mu26 ferrum silicon magnetic powder core | |
| CN106601448B (en) | A kind of molten note insulating method of resin of the reactor winding using fluidized bed process | |
| CN102294475A (en) | Ferrosilicon material and mu60 ferrosilicon magnetic powder core manufacturing method | |
| CN105047256A (en) | Mica tape containing microcapsule curing accelerator and preparation method thereof | |
| CN102942839A (en) | Nanofiller modified solvent-free insulating paint and preparation method thereof | |
| CN103567436A (en) | Manufacturing method of iron-silicon material and iron-silicon magnetic powder core having permeability mu of 55 | |
| CN101864058B (en) | Normal temperature dipping-type epoxy anhydride heat-resistant resin as well as preparation method and application thereof | |
| CN106549541B (en) | A kind of high-temperature electric machine armature insulation treatment process | |
| CN205050699U (en) | Resin for winding that utilizes reactor of fluidized bed method melts notes insulator arrangement | |
| CN106601470B (en) | Command bundle rods for nuclear reactors driving mechanism electromagnetic coil and preparation method thereof | |
| CN105140479A (en) | Preparation method of lithium battery anode material | |
| CN108189423A (en) | Compound insulation tube liner and its preparation method and application | |
| CN108311351A (en) | Magnet ring or iron core ring powder coating process | |
| CN104312378A (en) | High-temperature resistant solvent-free impregnating varnish and preparation method thereof | |
| AU602285B2 (en) | Process for stripping a layer of paint from the surface of a support | |
| CN102545497A (en) | Dipping paint drying method for stator random winding | |
| CN107903064A (en) | A kind of preparation method of hyperfine structure graphite for electrical discharge machining | |
| CN105537520A (en) | Production technology for casting lost foam | |
| CN111599556A (en) | Manufacturing method of flexible surface functionally gradient post insulator for extra-high voltage alternating current GIL |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |