CN104934131A - Intermediate pressure resin cast insulation bus and manufacturing method thereof - Google Patents

Intermediate pressure resin cast insulation bus and manufacturing method thereof Download PDF

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Publication number
CN104934131A
CN104934131A CN201510298890.3A CN201510298890A CN104934131A CN 104934131 A CN104934131 A CN 104934131A CN 201510298890 A CN201510298890 A CN 201510298890A CN 104934131 A CN104934131 A CN 104934131A
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CN
China
Prior art keywords
conductor
insulator
hole
epoxy resin
semicircular arc
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Pending
Application number
CN201510298890.3A
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Chinese (zh)
Inventor
蒋文功
黄克锋
蔡金良
郭城
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JIANGSU WETOWN ELECTRICITY SET CO Ltd
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JIANGSU WETOWN ELECTRICITY SET CO Ltd
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Priority to CN201510298890.3A priority Critical patent/CN104934131A/en
Publication of CN104934131A publication Critical patent/CN104934131A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an intermediate pressure resin cast insulation bus. The intermediate pressure resin cast insulation bus comprises an insulator and conductors; after the plurality of conductors penetrate the insulator, the two ends of each conductor respectively extend out of the two side end surfaces of the insulator; the plurality of conductors are arranged in an array, the insulator is provided with a plurality of through holes penetrating the upper end surface and the lower end surface of the insulator, and the through holes are arranged between the conductors; and the two ends of each through hole are in the shape of semicircles, and the diameters of the semicircles are smaller than the maximum widths of the two ends of each through hole. Further provided is a manufacturing method of the intermediate pressure resin cast insulation bus. Heat generated in the insulator when currents flow through the conductors is dissipated as much as possible through the plurality of through holes, such that the current-carrying capacity of the intermediate pressure bus is improved, and the intermediate pressure bus, even if bearing a harsh high-temperature impact, can still maintain its insulation property.

Description

The casting insulated bus of middle pressurizing resin and manufacture method thereof
Technical field
The present invention relates to middle pressure bus field, particularly the casting insulated bus of pressurizing resin and manufacture method thereof in one.
Background technology
The major defect of existing middle pressure bus is that heat-sinking capability is limited, because cooling surface area is only confined to the surface area of the insulation parent of middle pressure bus, because ampacity is larger, the heat that middle pressure bus sends is higher, it can thus be appreciated that, the heat-sinking capability quality of middle pressure bus has great impact to ampacity, is therefore necessary that providing a kind of increases cooling surface area and press bus in the one that cross-ventilation also can be utilized to dispel the heat, and uses in increase the electric current current-carrying of pressing bus.
Summary of the invention
In view of this, an object of the present invention is to propose the casting insulated bus of pressurizing resin in one, poor to solve current bus heat-sinking capability, insulation property are low, and then cause the technical problem that ampacity is little and the life-span is short.
There is a basic understanding some aspects in order to the embodiment to disclosure, shown below is simple summary.This summarized section is not extensive overview, neither determine key/critical component or describe the protection range of these embodiments.Its sole purpose presents some concepts by simple form, in this, as the preamble of following detailed description.
In some optional embodiments, provide pressurizing resin in one casting insulated bus, comprise insulator and conductor, it is characterized in that: after some described conductors run through described insulator, the both sides end face of described insulator is stretched out at two ends respectively; Some described conductors are by arrayed, and described insulator is provided with some through holes running through its upper and lower both ends of the surface, and described through hole is arranged between described conductor and conductor; The two ends of described through hole are semicircular arc, and the diameter of described semicircular arc is less than the Breadth Maximum at described through hole two ends.
In some optional embodiments, the side end face of the described insulator between described conductor and conductor forms inner fovea part to offside sunken end face.
In some optional embodiments, the shape of described inner fovea part is identical with the shape of described through hole one end.
In some optional embodiments, described insulator is that epoxy resin composite cast is formed, and structure adopts three-phase integrated pouring, integrated design, without the need to insulated support and shell.
In some optional embodiments, the intersection of the side end face of described conductor and described insulator is provided with transition bucking ladder, and the face area of described transition bucking ladder reduces gradually along the direction that the side end face of described insulator is outside.
Another object of the present invention is the manufacture method proposing the casting insulated bus of a kind of middle pressurizing resin, comprises the following steps: remove the greasy dirt of conductive surface and the dirt of adhesion, and remove the burr of conductive surface; The position heat resistant adhesive tape applied is not needed by conductor to cover; By conductor pre-heating to after 200 DEG C to 260 DEG C, be dipped in the fluid bed of existing toner, until the resin thickness of fluidisation reaches the thickness of regulation, after hot setting, peel off the veil of conductive surface; Conductor after fluidisation by after arrayed at conductor upper insulator, described insulator adopts epoxy resin composite, described epoxy resin composite is by reacting curing molding with curing agent, when pouring into a mould described epoxy resin composite, through hole is left in the both ends of the surface up and down of described insulator, described through hole is between described conductor and conductor, and the two ends of described through hole are semicircular arc, and the diameter of described semicircular arc is less than the Breadth Maximum at described through hole two ends.
Another object of the present invention is the manufacture method proposing the casting insulated bus of a kind of middle pressurizing resin, comprises the following steps: remove the greasy dirt of conductive surface and the dirt of adhesion, and remove the burr of conductive surface; The position heat resistant adhesive tape applied is not needed by conductor to cover; By conductor pre-heating to after 180 to 240 DEG C, move in powder spraying chamber, toner to be sprayed onto on conductor and to reach the thickness of regulation, after hot setting, peelling off the veil of conductive surface; Conductor after fluidisation by after arrayed at conductor upper insulator, described insulator adopts epoxy resin composite, described epoxy resin composite is by reacting curing molding with curing agent, when pouring into a mould described epoxy resin composite, through hole is left in the both ends of the surface up and down of described insulator, described through hole is between described conductor and conductor, and the two ends of described through hole are semicircular arc, and the diameter of described semicircular arc is less than the Breadth Maximum at described through hole two ends.
Beneficial effect of the present invention:
1) as much as possible disperse when electric current is by conductor by some through holes, the heat produced in insulator, uses in lifting the ampacity of pressing bus, when making middle pressure bus bear harsh high temperature impact, still can keep its insulation property;
2) two ends of through hole are set to semicircular arc, compare the both ends of the surface directly maximum cross-section of semicircular arc being set to through hole, then expand the volume of through hole, add the air containment of through hole; And the diameter of semicircular arc is arranged to the size being less than through hole two ends Breadth Maximum, compare the size being more than or equal to through hole two ends Breadth Maximum, reduce certain through hole volume, ensure that the intensity of insulator, when making middle pressure bus bear harsh high temperature impact, keep its insulation property better;
3), while improving product insulation property and electric life, partial discharge is reduced;
4) via design is " plate lattice window " moulding of concavo-convex symmetry, is rich in Chinese classical characteristic, elegant in appearance.
In order to above-mentioned and relevant object, will describe in detail and the feature particularly pointed out in the claims after one or more embodiment comprises.Explanation below and accompanying drawing describe some illustrative aspects in detail, and its instruction is only some modes in the utilizable various mode of principle of each embodiment.Other benefit and novel features become obvious by considering by reference to the accompanying drawings along with detailed description below, and the disclosed embodiments will comprise all these aspects and theirs is equivalent.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the front view of the casting insulated bus of pressurizing resin in the present invention;
Fig. 2 is the vertical view of the casting insulated bus of pressurizing resin in the present invention;
Fig. 3 is the schematic flow sheet that the present invention adopts the casting insulated bus manufacture method of the middle pressurizing resin of hot dip coating mode;
Fig. 4 is the schematic flow sheet that the present invention adopts the casting insulated bus manufacture method of the middle pressurizing resin of thermal spraying mode;
In figure, insulator 1, conductor 2, through hole 3, inner fovea part 4, transition bucking ladder 5.
Embodiment
The following description and drawings illustrate specific embodiment of the invention scheme fully, to enable those skilled in the art to put into practice them.Other embodiments can comprise structure, logic, electric, process and other change.Embodiment only represents possible change.Unless explicitly requested, otherwise independent parts and function are optional, and the order of operation can change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.The scope of embodiment of the present invention comprises the gamut of claims, and all obtainable equivalent of claims.
In some illustrative embodiments, as shown in Figures 1 and 2, the casting insulated bus of middle pressurizing resin provided, comprises insulator 1 and conductor 2; After some described conductors 2 run through described insulator 1, the both sides end face of described insulator 1 is stretched out at two ends respectively; Some described conductors 2 are by arrayed, and described insulator 1 is provided with some through holes 3 running through its upper and lower both ends of the surface, and described through hole 3 is arranged between described conductor and conductor;
The two ends of described through hole 3 are semicircular arc, and the diameter of described semicircular arc is less than the Breadth Maximum at described through hole 3 two ends.
The effect of some through holes 3 is as much as possible to disperse when electric current is by conductor, and the heat produced in insulator 1, uses in lifting the ampacity of pressing bus, when making middle pressure bus bear harsh high temperature impact, still can keep its insulation property.
The two ends of through hole 3 are set to semicircular arc, compare the both ends of the surface directly maximum cross-section of semicircular arc being set to through hole 3, then expand the volume of through hole 3, add the air containment of through hole 3; And the diameter of semicircular arc is arranged to the size being less than through hole 3 two ends Breadth Maximum, compare the size being more than or equal to through hole 3 two ends Breadth Maximum, reduce certain through hole 3 volume, ensure that the intensity of insulator 1, when making middle pressure bus bear harsh high temperature impact, keep its insulation property better.
In some illustrative embodiments, insulator 1 material can be inorganic mineral, epoxy resin, inorganic mineral coordinate epoxy resin or other suitable material, and the material of conductor 2 can be copper, aluminium or other suitable metal material.
In some illustrative embodiments, the side end face of the described insulator 1 between described conductor 2 and conductor 2 forms inner fovea part 4 to offside sunken end face, the two ends of conductor 2 are stretched out from the both sides end face of insulator 1, when electric current is by conductor, easily in the sidewall of conductor 2 and the end face junction accumulated heat of insulator 1, and inner fovea part 4 provides larger space for dispel the heat just herein, presses the serviceability of bus in guarantee.
In some illustrative embodiments, the shape of described inner fovea part 4 is identical, easy to process with the shape of described through hole 3 one end, improves the production efficiency of product.
In some illustrative embodiments, described insulator 1 is epoxy resin composite cast formation, and cost performance is high.
In some illustrative embodiments, described conductor 2 is provided with transition bucking ladder 5 with the intersection of the side end face of described insulator 1, and the face area of described transition bucking ladder 5 reduces gradually along the direction that the side end face of described insulator 1 is outside; The setting of transition bucking ladder 5, firm further conductor 2 and the combination of insulator 1, improve serviceability.
In some illustrative embodiments, as shown in Figure 3, provide the manufacture method of the casting insulated bus of a kind of middle pressurizing resin, the mode adopting conductor hot dip coating and cast to combine, comprises the following steps:
101: conductor, first through surface cleaning wipe oil and other dirt adhered to, checks whether still jagged and removes clean;
102: do not needed by conductor the position heat resistant adhesive tape applied to cover;
103: by conductor pre-heating to after 200 DEG C to 260 DEG C, to be dipped in the fluid bed of existing toner 1 to 2 second, until the resin thickness of fluidisation reaches 300 to 400 μm, wherein, time is longer or number of times is more, and thickness is higher, peels off the veil of conductive surface after fluidisation completes;
104: the conductor after sulfuration by after arrayed at conductor upper insulator, during casting insulated body, through hole is left in the both ends of the surface up and down of described insulator, and described through hole is between described conductor and conductor, the two ends of described through hole are semicircular arc, and the diameter of described semicircular arc is less than the Breadth Maximum at described through hole two ends.Described insulator adopts epoxy resin composite, and described epoxy resin composite is by reacting curing molding with curing agent.
The resin thickness of above-described fluidisation time and sulfuration is best, is not only confined to described scope, can adjusts according to demand.
In some illustrative embodiments, as shown in Figure 4, provide the manufacture method of the casting insulated bus of a kind of middle pressurizing resin, adopt thermal spraying and pour into a mould the mode combined, comprising the following steps:
201: conductor, first through surface cleaning wipe oil and other dirt adhered to, checks whether still jagged and removes clean;
202: do not needed by conductor the position heat resistant adhesive tape applied to cover;
203: by conductor pre-heating to after 180 to 240 DEG C, move in powder spraying chamber, toner to be sprayed onto on conductor and to reach the thickness of regulation, after hot setting, peelling off the veil of conductive surface;
204: the conductor after sulfuration by after arrayed at conductor upper insulator, during casting insulated body, through hole is left in the both ends of the surface up and down of described insulator, and described through hole is between described conductor and conductor, the two ends of described through hole are semicircular arc, and the diameter of described semicircular arc is less than the Breadth Maximum at described through hole two ends.Described insulator adopts epoxy resin composite, and described epoxy resin composite is by reacting curing molding with curing agent.
In some illustrative embodiments, described epoxy resin composite is mainly divided into three phases by reacting curing molding with curing agent:
Liquid stage, i.e. operating time, also referred to as operating time or operating period, it is the some of curing time, and described epoxy resin composite is by after mixing with curing agent, and resin/curing agent mixture remains liquid, and now it can work and be applicable to application.Bonding reliably in order to ensure, all construction and positioning work should be carried out within the curing operation time.
Gel phase, now described resin/curing agent mixture enters solidification, namely starts to enter solidification phase, and also referred to as maturation stage, at this moment resin/curing agent mixture starts gel or " sudden change ".At this moment epoxy resin composite does not work possibility for a long time, will lose viscosity yet.Any interference can not be carried out to it in this stage.Epoxy resin composite will become soft jello like hard rubber, now push down force with thumb and it can be made to be out of shape.At this moment resin/curing agent mixture is local solidification, and epoxy resin composite still can carry out chemical bonds with curing agent, and therefore bonding or reaction still can be carried out in untreated surface.
Solids stages, namely resin/curing agent mixture reaches solidification and becomes solids stages, at this moment can sand milling and integer.At this moment pushing down force with thumb cannot make it be out of shape, and at this moment epoxy resin composite about has the end reaction intensity of 90%, therefore can remove fixed clip, it is put and at room temperature maintains its continuation solidification of some angels.The epoxy resin composite of this stylish use can not carry out chemical bonds with it, and therefore preliminary treatment suitably must be carried out as polishing in its surface, the bonding mechanical strength that just can obtain.
At described epoxy resin composite by before reacting curing molding with curing agent, described conductor is carried out to the process of fluidisation, make its its insulation system temperature rank be 180 DEG C of (H) levels, working temperature is higher, coating can not be heated deliquescing, and security performance promotes further.
And, the insulating corrosion powder of fluidisation is the thermosets with good electrical performance, thermoplastic unlike traditional thermal shrinkable sleeve, be heated with regard to easy deliquescing, prevent due to the lower reason of thermal shrinkable sleeve temperature resistant grade, cause Yin Wendu too high and burnt, thus causing the situation of serious security incident to occur, fluidisation coating of the present invention meets the requirement of UL V-0 flame retardant test completely.
Take conductor as copper bar be example, under insulating coating, the naked row of copper bar temperature rise ratio is lower, does not only need to fall appearance, can rise appearance on the contrary.Insulating corrosion resin has fabulous thermal conductivity, and coating and copper bar are combined closely, there is no air gap, therefore heat-radiation heat-dissipating effect is under equal conditions better than naked row, and thermal shrinkable sleeve is lower due to thermal conductivity and the existence of thermal insulation air gap, heat is unnecessarily retained in busbar, therefore the more naked row of temperature is high, thus have to fall appearance, increase cost.In temperature rise test test, the temperature of naked copper row reaches 43 DEG C, and the copper bar temperature 35 DEG C under coating of the present invention, possess ageing-resistant, the advantage of long service life.
And insulating coating makes bus entirety have good antiseptic property, is applicable to various severe engineering-environment, saves material, reduce costs, improve quality stability.
Those skilled in the art it is also understood that various illustrative box, module, circuit and the algorithm steps combining embodiment herein and describe all can be embodied as electronic hardware, computer software or its combination.In order to the interchangeability between hardware and software is clearly described, all carry out usually describing around its function to various illustrative parts, frame, module, circuit and step above.Be embodied as hardware as this function or be embodied as software, the design constraint depending on specific application and whole system is applied.Those skilled in the art for each application-specific, can realize described function in the mode of accommodation, but, thisly realize decision-making and should not be construed as and deviate from protection range of the present disclosure.

Claims (7)

1. the casting insulated bus of pressurizing resin in, comprises insulator and conductor, it is characterized in that: after some described conductors run through described insulator, the both sides end face of described insulator is stretched out at two ends respectively; Some described conductors are by arrayed, and described insulator is provided with some through holes running through its upper and lower both ends of the surface, and described through hole is arranged between described conductor and conductor;
The two ends of described through hole are semicircular arc, and the diameter of described semicircular arc is less than the Breadth Maximum at described through hole two ends.
2. the casting insulated bus of middle pressurizing resin according to claim 1, is characterized in that: the side end face of the described insulator between described conductor and conductor forms inner fovea part to offside sunken end face.
3. the casting insulated bus of middle pressurizing resin according to claim 2, is characterized in that: the shape of described inner fovea part is identical with the shape of described through hole one end.
4. the casting insulated bus of middle pressurizing resin according to claim 1, is characterized in that: described insulator is that epoxy resin composite cast is formed.
5. the casting insulated bus of middle pressurizing resin according to claim 1, it is characterized in that: the intersection of the side end face of described conductor and described insulator is provided with transition bucking ladder, the face area of described transition bucking ladder reduces gradually along the direction that the side end face of described insulator is outside.
6. the manufacture method of the casting insulated bus of pressurizing resin according to any one of claim 1 to 5, is characterized in that, comprise the following steps:
Remove the greasy dirt of conductive surface and the dirt of adhesion, and remove the burr of conductive surface;
The position heat resistant adhesive tape applied is not needed by conductor to cover;
By conductor pre-heating to after 200 DEG C to 260 DEG C, be dipped in the fluid bed of existing toner, until the resin thickness of fluidisation reaches the thickness of regulation, after hot setting, peel off the veil of conductive surface;
Conductor after sulfuration by after arrayed at conductor upper insulator, described insulator adopts epoxy resin composite, described epoxy resin composite is by reacting curing molding with curing agent, when pouring into a mould described epoxy resin composite, through hole is left in the both ends of the surface up and down of described insulator, described through hole is between described conductor and conductor, and the two ends of described through hole are semicircular arc, and the diameter of described semicircular arc is less than the Breadth Maximum at described through hole two ends.
7. the manufacture method of the casting insulated bus of pressurizing resin according to any one of claim 1 to 5, is characterized in that, comprise the following steps:
Remove the greasy dirt of conductive surface and the dirt of adhesion, and remove the burr of conductive surface;
The position heat resistant adhesive tape applied is not needed by conductor to cover;
By conductor pre-heating to after 180 to 240 DEG C, move in powder spraying chamber, toner to be sprayed onto on conductor and to reach the thickness of regulation, after hot setting, peelling off the veil of conductive surface;
Conductor after sulfuration by after arrayed at conductor upper insulator, described insulator adopts epoxy resin composite, described epoxy resin composite is by reacting curing molding with curing agent, when pouring into a mould described epoxy resin composite, through hole is left in the both ends of the surface up and down of described insulator, described through hole is between described conductor and conductor, and the two ends of described through hole are semicircular arc, and the diameter of described semicircular arc is less than the Breadth Maximum at described through hole two ends.
CN201510298890.3A 2015-06-03 2015-06-03 Intermediate pressure resin cast insulation bus and manufacturing method thereof Pending CN104934131A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111463732A (en) * 2020-05-08 2020-07-28 鼎圣集团有限公司 Technological method of integrated bus duct connector
CN111541126A (en) * 2020-04-27 2020-08-14 江苏华强电力设备有限公司 All-insulation pouring common-box bus and production process thereof

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Publication number Priority date Publication date Assignee Title
CN101105990A (en) * 2007-05-31 2008-01-16 江苏南自通华母线有限公司 Bus conductor surface insulation layer production method
CN203004180U (en) * 2012-12-10 2013-06-19 江苏威腾母线有限公司 Medium-pressure resin bus heat dissipation hole casting mould
CN203246030U (en) * 2012-12-10 2013-10-23 江苏威腾母线有限公司 Pouring die for end part of medium-pressure resin bus
CN103560339A (en) * 2013-11-12 2014-02-05 江苏威腾母线有限公司 Connection device of high-voltage resin busbar joint
CN204190317U (en) * 2014-09-12 2015-03-04 中国能源建设集团镇江华东电力设备制造厂 All insulation cast bus
CN204792142U (en) * 2015-06-03 2015-11-18 江苏威腾母线有限公司 Middling pressure resin pouring isolated bus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101105990A (en) * 2007-05-31 2008-01-16 江苏南自通华母线有限公司 Bus conductor surface insulation layer production method
CN203004180U (en) * 2012-12-10 2013-06-19 江苏威腾母线有限公司 Medium-pressure resin bus heat dissipation hole casting mould
CN203246030U (en) * 2012-12-10 2013-10-23 江苏威腾母线有限公司 Pouring die for end part of medium-pressure resin bus
CN103560339A (en) * 2013-11-12 2014-02-05 江苏威腾母线有限公司 Connection device of high-voltage resin busbar joint
CN204190317U (en) * 2014-09-12 2015-03-04 中国能源建设集团镇江华东电力设备制造厂 All insulation cast bus
CN204792142U (en) * 2015-06-03 2015-11-18 江苏威腾母线有限公司 Middling pressure resin pouring isolated bus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111541126A (en) * 2020-04-27 2020-08-14 江苏华强电力设备有限公司 All-insulation pouring common-box bus and production process thereof
CN111463732A (en) * 2020-05-08 2020-07-28 鼎圣集团有限公司 Technological method of integrated bus duct connector

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