CN102479627A - Multifunctional novel molding power equipment and manufacturing method thereof - Google Patents
Multifunctional novel molding power equipment and manufacturing method thereof Download PDFInfo
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- CN102479627A CN102479627A CN2010105551252A CN201010555125A CN102479627A CN 102479627 A CN102479627 A CN 102479627A CN 2010105551252 A CN2010105551252 A CN 2010105551252A CN 201010555125 A CN201010555125 A CN 201010555125A CN 102479627 A CN102479627 A CN 102479627A
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Abstract
The invention discloses a multifunctional novel molding power equipment. An insulating shell is made of ceramic with high insulating strength. The molding power equipment comprises an insulating shell, an end plate, an electronic element and an electric insulating layer, wherein the insulating shell is made of ceramic and is provided with a tail end and an unglazed outer surface; the end plate is arranged at the tail end of the insulating shell; the electronic element is arranged in the insulating shell through the end plate; and the electric insulating layer is molded on the unglazed outer surface of the insulating shell.
Description
Technical field
The present invention relates generally to-individual molded power equipment, the vacuum circuit-breaker of for example being processed by epoxy resin mould relates in particular to-kind of the molded power equipment with improved dielectric strength.
Background technology
Usually, the power equipment resemble the vacuum circuit-breaker has by the insulating material molded outer surface of epoxy resin mould for example.This helps to prevent dying down of its dielectric strength, because the outer surface of power equipment is not influenced by the humidity pollution.In other words, electric insulation layer is molded in the outer surface of power equipment, to prevent dying down of its dielectric strength.It is known that epoxy resin itself does not have enough rigidity.Therefore, silane fine finishining particle, silica flour for example, aluminium oxide (alumsaum oxide), or glass mix with epoxy resin, improve the rigidity of insulating barrier as insulating material.Usually, silane coupler is used to silane fine finishining to improve the bonding living ability of powdered granule.In addition, the power equipment as the vacuum circuit-breaker has by the pottery insulation crust processed of aluminium oxide ceramics for example.Usually, the outer surface of this power equipment insulation crust is plated (glazing) glass glaze and is got rusty to prevent outer surface.This glass glaze is ejected on the outer surface with the form of powdered glass material solution.After on outer surface, spraying powdered glass material solution, outer surface is heated to high temperature makes and on outer surface, form the glazing layer.When on the outer surface of insulation crust, spraying powdered glass material solution, possibly causing within it, portion produces bubble.These bubbles form with the hole form in the glazing layer or at the intersection of outer surface and glazing layer.Even when electric insulation layer does not have sand holes when molded and shaped, these are formed in the glazing layer or the hole of insulation crust and glazing layer intersection also possibly cause partial discharge.Possibly cause dying down of insulation defect and dielectric strength like this.Insulating barrier, it possibly mixed with silane fine finishining particle by epoxy resin, and is molded at the outer surface of insulation crust.Silane fine finishining can improve the binding function of epoxy resin composition.Yet, in the insulating barrier cooling procedure, because the difference of expansion rate can form the gap along the intersection between glazing layer and the insulating barrier.The insulating material fracture possibly caused in these gaps along the part of having a common boundary between glazing layer and the insulating barrier, and then causes partial discharge, also possibly cause the deterioration of insulation property.Therefore, conventional power equipment is vacuum circuit-breaker for example, on the outer surface of insulation crust, has thicker insulating barrier, puts on the electric field strength of insulation crust with weakening.Caused the increase of power equipment size like this.
Correspondingly, the advantage of one aspect of the present invention provides a kind of molded power equipment of Multifucntional with insulation crust, and said insulation crust is processed by the pottery that has than high insulation resistance.For realizing above-mentioned and other advantage; One aspect of the present invention provides a kind of molded power equipment; It comprises: the insulation crust of being processed by pottery with terminal and unglazed outer surface; Be assemblied in the end plate on the insulation crust end, be installed in the electronic component in the insulation crust through end plate, and molded electric insulation layer on the unglazed outer surface of insulation crust.
Summary of the invention
Of the present invention in addition-individual aspect provides-kind make the method for molded power equipment, comprise the following steps:
The insulation crust of being processed by pottery is provided, provides to be installed on the inner electronic component of insulation crust, electronic component is installed in the insulation crust, and the appearance of molded insulation crust through end plate, and not to the outer surface glazing of insulation crust.
From the detailed description of following different embodiment, and combine its accompanying drawing, the more characteristic of the present invention, aspect and advantage will become more apparent.
Description of drawings
Fig. 1 is the cutaway view according to the molded power equipment of an embodiment.
Fig. 1 is a cutaway view, shows the molded power equipment according to present embodiment, and it has insulation crust, and said insulation crust has molded insulating barrier.In figure l, an example as this molded power equipment provides a vacuum circuit-breaker; And utilization epoxy resin is as molded outer as shown in fig. 1 in the vacuum circuit-breaker insulation crust of insulating barrier; Vacuum circuit-breaker 3 as-kind of power equipment comprises contact point 1 and 2, insulation crust 5; Insulating barrier 4, and sealing metal 6 and 7.Should be appreciated that Fig. 1 only is exemplary, rather than limitation of the present invention.Those skilled in the art can admit that various replacements or modification are parts of the present invention.Insulation crust 5 by pottery for example aluminium oxide ceramics process, and have the for example profile of column type.Contact point 1 and 2 is installed in the insulation crust 5 as electronic component, and contact point 1 and 2 is separated from each other.Sealing metal 6 and 7 is installed in each end of insulation crust 5 as end plate, and basic fixed lives in contact point l and 2.In addition, insulation crust 5 is lived in sealing metal 6,7 and sylphon seal, and keeps insulation crust
Inner vacuum state.Contact point 1 and 2 constitutes electronic component, and they are installed in the inside of insulation crust 5 through sealing metal 6 and 7. Contact point 2 and 10 actual connections of movable axis.An operating mechanism (not shown) is connected with movable axis 10, opens and closes contact point 1 and 2 through action bars ll.Fixed sides lead 8 is circuit-parts, through exhausted, edge shell 5-hold to be connected with contact point l electric power.Movable side lead 9 is put 2 electric power from worm and is connected with connecing.Insulating barrier 4 utilizes the insulating material of being processed by epoxy resin molded around vacuum circuit-breaker 3.The outer surface of insulation crust 5 is (not glazing) ceramic surfaces that expose, and this means not glazing of outer surface.Used identical sign for components identical shown in Fig. 1, and omitted detailed description those similar elements.
Improve in the example at this, silane coupling agent layer l 2 is formed between the unglazed outer surface of insulating barrier 4 and insulation crust 5.Before insulation crust 5 is molded, through silane coupler is placed (coating) on insulation crust 5 unglazed outer surfaces with formation silane coupling agent layer 12.Said silane coupler comprises organic substance and silicon.More particularly, in-individual embodiment, silicone couplet layer 12 forms as follows.
At first, the vacuum circuit-breaker 3 said insulation crusts that are ready to have insulation crust 5 are processed by pottery.As mentioned above, the outer surface of insulation crust 5 remains exposed (unglazed) surface.The exposed outer surface of insulation crust 5 can obtain to make after vacuum circuit-breaker 3 has the insulation crust 5 of glazing outer surface not through sand-blast glaze removal for example; The liquid silane coupling agent is coated on this not on the glazing surface; For example, through using brush so that coating is even.Under the high situation of liquid silane coupling agent viscosity, liquid silane coupling agent available processes dilution agent.Inorganic agent can obtain through mixing water and alcohol.So-called liquid silane coupling diluent is with the liquid silane coupling agent behind the processing dilution agent, can reduce its viscosity.In addition, adopt liquid silane coupling diluent, wettability is enhanced, and is easy to carry out the coating operation.And, because the hydrolysis of inorganic agent when using liquid silane coupling diluent, can improve the adhesiveness with epoxy resin.
The vacuum circuit-breaker 3 of coated silane coupler is placed in the metal die that is used to form insulating barrier 4.The metal die that vacuum circuit-breaker 3 is housed is heated to predetermined temperature, and with in the epoxy resin injection of metallic mould.At epoxy resin cure and after forming insulating barrier 4, the interface of silane coupling agent layer 12 between insulation crust 5 and insulating barrier 4 divided formation.Silane fine finishining particle, silica flour for example, aluminium oxide (aluminum oxide), or glass can be used as filler and mix with epoxy resin, and can use with the material of insulating barrier 4, to improve the rigidity of insulating barrier 4.The rigidity of insulating barrier 4 can be further improved through using particles of inorganic material, for example has the silica flour of at least two kinds of particle sizes, mixes mutually with the rubber grain with core shell structure, as the filler of epoxy canopy purport.Study dielectric strength and Characteristics of Partial Discharge thereof through the service test model according to the molded power equipment of the foregoing description.Fig. 3 is that the signal f that shows test model gives birth to half sectional view, and this test model is used for studying the dielectric strength according to the part of having a common boundary between the insulation crust of the power equipment of present embodiment and the insulating barrier.
As shown in Figure 3, the test model that uses under study for action is that 1. a diameter is the insulation crust 13 of 50mm.Center on insulation crust 13 to be furnished with-to ring electrode 14 and 15, their end is slightly at a distance of 10mm.Electrode 14 and 15 is similar to the sealing metal 6 and 7 of vacuum circuit-breaker illustrated in figures 1 and 23.The outer surface of insulation crust 13 is molded with epoxy resin mould, and not to the outer surface glazing of insulation crust 13.Electrode 14 and 15 periphery are molded by epoxy resin mould equally, but expose each end of electrode 14 and 15.Epoxy resin forms insulating barrier 16, and it is similar to insulating barrier illustrated in figures 1 and 24.Adopt such test model,, can obtain the special Sui of partial discharge at position, boundary between insulation crust 13 and the insulating barrier l 6 through applying voltage between the electrode 15 (14) of giving electrode 14 (15) and another ground connection.Research is implemented under 3 kinds of conditions, i.e. example 1, example 2 and comparative example.The embodiment that example l and example 2 are based on this discussion, it has and adopts the not insulation crust of glazing outer surface.
The boundary of example 1 between insulation crust 13 and insulating barrier 16 partly do not have silane coupling agent layer, and it is similar to the structure shown in Fig. 1.On the other hand, the boundary of example 2 between insulation crust 13 and insulating barrier 16 partly has silane coupling agent layer, and it is similar to the structure shown in Fig. 2.Comparative example has insulation crust 13, and it adopts the outer surface of glazing, represents prior art.The boundary of comparative example between insulation crust 13 and insulating barrier 16 partly do not have silane coupling agent layer.
Three samplings of test model are from each routine l, 2 with comparative example in obtain.Each example is carried out the beginning voltage of three partial discharges and the research of end voltage.Result of study is shown in Fig. 4, and it is a comparison sheet that draw, that show the research value of minimum beginning voltage of partial discharge and end voltage from three researchs of each example.
As shown in Figure 4, table 20 is every-capable condition and the result who shows above-mentioned each example.
Beginning about partial discharge in the Characteristics of Partial Discharge of voltage and end voltage, example 1 is compared 1.4 times of about raisings with comparative example.In addition, example 2 approximately improves 9 times with respect to comparative example.After the research of Characteristics of Partial Discharge, decomposition and research E state test model.In example 1, confirm on the pottery of insulation crust 13 and the boundary between the insulating barrier 16, not to be considered to the gap or the hole of defective.
In addition, in example 2, insulation. the pottery of sunset fore-telling shell 13 and insulating barrier 16 are through silane coupled adhesive linkage strong bond.
In comparative example, on the boundary between pottery and glaze, find some holes.
As stated; In molded power equipment according to the embodiment of the invention; Because the surface of the exhausted 10 edge shells 5 of vacuum circuit-breaker 3 is processed by exposed (unglazed) ceramic surface, the partial discharge that is caused by the hole in the adamantine layer can not form, and so therefore can improve dielectric strength.In addition, silane coupler is coated on exposed ceramic surface, makes between insulation crust and insulating barrier, to form silane coupling agent layer, has improved the adhesiveness with insulating barrier like this, and therefore dielectric strength can be further improved.Should also be noted that conductive paint, aluminium paint for example is coated on the surface as each sealing metal of end plate, can improve the adhesiveness between insulating barrier and each sealing metal, causes the further raising of Characteristics of Partial Discharge and dielectric strength like this.
The present invention is not limited to the foregoing description.In an embodiment of the present invention, molded power equipment is explained with vacuum circuit-breaker; Yet the present invention can be applied to such power equipment equally: for example semiconductor element or zinc oxide component are installed in the insulation crust of ceramic cylinder shape electronic component in power equipment.Under those Sui's conditions, end plate possibly not be a plate, can be in the structure of insulation crust internal fixation electronic component but have.One of those structures ordinary skill through this area can obtain easily.Through considering the present invention's specification disclosed herein and criterion, to one skilled in the art, other embodiments of the invention are conspicuous.This means specification and embodiment as just example, spirit that the present invention is real and scope will be pointed out through following claim.
Claims (1)
1. the molded power equipment of Multifucntional comprises: the insulation crust of being processed by pottery with terminal and unglazed outer surface; Be assemblied in the end plate on the insulation crust end; Be installed in the electronic component in the insulation crust through end plate; And molded electric insulation layer on the unglazed outer surface of insulation crust; Wherein said electric insulation layer comprises epoxy resin, further comprises: be formed at the silane coupling agent layer between the unglazed outer surface of electric insulation layer and insulation crust; Be formed at the conductive coating of the conduction between electric insulation layer and the end plate outer surface; Wherein said molded power equipment comprises vacuum circuit-breaker;
2, the method for the molded power equipment of a kind of multi-functional manufacturing comprises the steps: to provide the insulation crust of being processed by pottery; Provide and be installed on the inner electronic component of insulation crust; Through end plate electronic component is installed in the insulation crust; And the appearance of molded insulation crust, and not to the outer surface glazing of insulation crust; Comprise the following steps: that further the outer surface an ancient type of spoon at insulation crust provides silane coupling agent layer before insulation crust is molded and shaped; Further comprising the following steps: provides diluent through mixing water and alcohol, and before for the outer surface of insulation crust silane coupling agent layer being provided, uses the diluent silane coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105551252A CN102479627A (en) | 2010-11-23 | 2010-11-23 | Multifunctional novel molding power equipment and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105551252A CN102479627A (en) | 2010-11-23 | 2010-11-23 | Multifunctional novel molding power equipment and manufacturing method thereof |
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| CN102479627A true CN102479627A (en) | 2012-05-30 |
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| CN2010105551252A Pending CN102479627A (en) | 2010-11-23 | 2010-11-23 | Multifunctional novel molding power equipment and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531400A (en) * | 2013-11-04 | 2014-01-22 | 宁波优维电力科技有限公司 | Solid-sealed polar pole and production method thereof |
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2010
- 2010-11-23 CN CN2010105551252A patent/CN102479627A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531400A (en) * | 2013-11-04 | 2014-01-22 | 宁波优维电力科技有限公司 | Solid-sealed polar pole and production method thereof |
| CN103531400B (en) * | 2013-11-04 | 2015-08-19 | 宁波优维电力科技有限公司 | A kind of pole and production method thereof |
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Application publication date: 20120530 |