CN114267500A - Structure and manufacturing method of split insulator unit - Google Patents
Structure and manufacturing method of split insulator unit Download PDFInfo
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- CN114267500A CN114267500A CN202111649277.3A CN202111649277A CN114267500A CN 114267500 A CN114267500 A CN 114267500A CN 202111649277 A CN202111649277 A CN 202111649277A CN 114267500 A CN114267500 A CN 114267500A
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- vacuum switch
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Abstract
The invention discloses a structure and a manufacturing method of a split type insulator unit, which comprises an umbrella skirt insulator and a vacuum switch tube, wherein two layers of silica gel layers with split type structures are arranged between the inner wall of the umbrella skirt insulator and the outer wall of the vacuum switch tube, namely an insulator glue layer and a vacuum switch tube glue layer respectively, the vacuum switch tube glue layer wraps the outer wall of the vacuum switch tube, and the insulator glue layer wraps the inner wall of the umbrella skirt insulator. The periphery of the vacuum switch tube is firstly poured with a layer of silicon rubber, then the inner wall of the insulator is poured with a layer of silicon rubber, a certain magnitude of interference exists between the two layers of silicon rubber, and after the silicon rubber vacuum switch tube assembly and the silicon rubber insulator assembly are cooled simultaneously, the silicon rubber vacuum switch tube assembly is pressed into the silicon rubber insulator assembly, so that the silicon rubber vacuum switch tube assembly and the silicon rubber insulator assembly form a whole. Simple structure does benefit to and updates the change to vacuum switch pipe and insulator.
Description
Technical Field
The invention relates to a vacuum circuit breaker of an electric locomotive, in particular to a structure and a manufacturing method of a split type insulator unit.
Background
The vacuum circuit breaker is an important electrical component of an electric locomotive, is arranged on a locomotive roof, is a main switch for electrical communication and breaking between a whole locomotive and a contact network, is the most important protection equipment on the locomotive, and can quickly, reliably and safely cut off a locomotive main power supply when various serious faults occur to the locomotive, thereby protecting locomotive equipment. The vacuum switch tube uses vacuum as an insulating medium and an arc extinguishing medium, and is a core component of a vacuum circuit breaker.
The prior structure is that the vacuum switch tube is directly encapsulated inside the silicon rubber insulator to form a complete whole body (insulator unit), and the structure has the defect that the vacuum switch tube cannot be disassembled.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a structure and a manufacturing method of a split-type insulator unit, so as to solve the technical problems in the prior art.
The purpose of the invention is realized by the following technical scheme:
the split insulator unit structure comprises an umbrella skirt insulator and a vacuum switch tube, wherein two silica gel layers of a split structure are arranged between the inner wall of the umbrella skirt insulator and the outer wall of the vacuum switch tube and respectively comprise an insulator glue layer and a vacuum switch tube glue layer, the vacuum switch tube glue layer wraps the outer wall of the vacuum switch tube, and the insulator glue layer wraps the inner wall of the umbrella skirt insulator.
The manufacturing method of the split insulator unit structure comprises the following steps:
firstly, respectively cleaning and smearing adhesion promoters on the outer wall of a vacuum switch tube and the surface of the inner wall of an insulator, respectively putting the vacuum switch tube and the surface of the inner wall of the insulator into an acrylic barrel mould, pouring a silica gel layer, and removing the acrylic barrel mould after forming and curing silica gel to form a silica gel vacuum switch tube assembly and a silica gel insulator assembly;
and then assembling the silica gel vacuum switch tube component and the silica gel insulator component together.
Compared with the prior art, the structure and the manufacturing method of the split insulator unit provided by the invention have the advantages that a layer of silicon rubber is poured on the periphery of the vacuum switch tube in advance, a layer of silicon rubber is poured on the inner wall of the insulator, a certain interference magnitude exists between the two layers of silicon rubber, and after the silicon rubber vacuum switch tube assembly and the silicon rubber insulator assembly are cooled simultaneously, the silicon rubber vacuum switch tube assembly is pressed into the silicon rubber insulator assembly, so that the silicon rubber vacuum switch tube assembly and the silicon rubber insulator assembly form a whole. Simple structure does benefit to and updates the change to vacuum switch pipe and insulator.
Drawings
Fig. 1 is a schematic structural diagram of a split insulator unit according to an embodiment of the present invention;
in the figure:
1. insulator 2, insulator glue film 3, vacuum switch tube glue film 4, vacuum switch tube A, fabrication hole
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely described below by combining the attached drawings in the embodiment of the invention; it is to be understood that the described embodiments are merely exemplary of the invention, and are not intended to limit the invention to the particular forms disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The terms that may be used herein are first described as follows:
the term "and/or" means that either or both can be achieved, for example, X and/or Y means that both cases include "X" or "Y" as well as three cases including "X and Y".
The terms "comprising," "including," "containing," "having," or other similar terms of meaning should be construed as non-exclusive inclusions. For example: including a feature (e.g., material, component, ingredient, carrier, formulation, material, dimension, part, component, mechanism, device, process, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product, or article of manufacture), is to be construed as including not only the particular feature explicitly listed but also other features not explicitly listed as such which are known in the art.
The term "consisting of … …" is meant to exclude any technical feature elements not explicitly listed. If used in a claim, the term shall render the claim closed except for the inclusion of the technical features that are expressly listed except for the conventional impurities associated therewith. If the term occurs in only one clause of the claims, it is defined only to the elements explicitly recited in that clause, and elements recited in other clauses are not excluded from the overall claims.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured," etc., are to be construed broadly, as for example: can be fixedly connected, can also be detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.
The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description only, and are not intended to imply or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting herein.
Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art. Those not specifically mentioned in the examples of the present invention were carried out according to the conventional conditions in the art or conditions suggested by the manufacturer. The reagents or instruments used in the examples of the present invention are not specified by manufacturers, and are all conventional products available by commercial purchase.
The split insulator unit structure comprises an umbrella skirt insulator and a vacuum switch tube, wherein two silica gel layers of a split structure are arranged between the inner wall of the umbrella skirt insulator and the outer wall of the vacuum switch tube and respectively comprise an insulator glue layer and a vacuum switch tube glue layer, the vacuum switch tube glue layer wraps the outer wall of the vacuum switch tube, and the insulator glue layer wraps the inner wall of the umbrella skirt insulator.
And the inner wall of the insulator rubber layer is in interference fit with the outer wall of the vacuum switch tube rubber layer.
The bottom of the umbrella skirt insulator is provided with a fabrication hole.
The manufacturing method of the split insulator unit structure comprises the following steps:
firstly, respectively cleaning and smearing adhesion promoters on the outer wall of a vacuum switch tube and the surface of the inner wall of an insulator, respectively putting the vacuum switch tube and the surface of the inner wall of the insulator into an acrylic barrel mould, pouring a silica gel layer, and removing the acrylic barrel mould after forming and curing silica gel to form a silica gel vacuum switch tube assembly and a silica gel insulator assembly;
and then assembling the silica gel vacuum switch tube component and the silica gel insulator component together.
And cooling the silica gel vacuum switch tube assembly and the silica gel insulator assembly to below the use temperature by using liquid nitrogen, and assembling the silica gel vacuum switch tube assembly and the silica gel insulator assembly by using interference fit.
The fabrication hole is used for balancing the atmospheric pressure in the assembly pressing-in process.
When the silicon rubber vacuum switch tube assembly is disassembled, the silicon rubber vacuum switch tube assembly and the silicon rubber insulator assembly are cooled to a temperature below the use temperature by using liquid nitrogen, and then the silicon rubber vacuum switch tube assembly is taken out.
The interference magnitude of the interference fit is 0.1mm, and the use temperature of the split insulator unit is-40-70 ℃;
and during assembly and disassembly, the silicon rubber insulator component and the silicon rubber vacuum switch tube component are simultaneously cooled to below 80 ℃ below zero by using liquid nitrogen.
In summary, the structure and the manufacturing method of the split insulator unit according to the embodiment of the invention are optimized for the insulator structure of the vacuum circuit breaker for the electric locomotive, a layer of silicon rubber is poured on the periphery of the vacuum switch tube in advance, a layer of silicon rubber is poured on the inner wall of the insulator, a certain interference magnitude exists between the two layers of silicon rubber, and after the silicon rubber vacuum switch tube assembly and the silicon rubber insulator assembly are cooled simultaneously, the silicon rubber vacuum switch tube assembly is pressed into the silicon rubber insulator assembly. The manufacturability and the detachability of the insulator are improved.
In order to more clearly show the technical solutions and the technical effects provided by the present invention, the following detailed description is provided for the embodiments of the present invention with specific embodiments.
Example 1
As shown in fig. 1, after cleaning the peripheral surface of the vacuum switch tube and coating an adhesion promoter, the vacuum switch tube is placed into an acrylic barrel mold, and a layer of silicone rubber layer 3 is poured, wherein the ratio of the silicone rubber A, B components is 100: 10. And (3) removing the acrylic barrel mould after the silicone rubber is formed and cured to form the silicone rubber vacuum switch tube assemblies 3 and 4. Cleaning the inner wall of the insulator, smearing a layer of adhesion promoter, pouring a layer of silicon rubber 2 on the inner wall of the insulator by using an acrylic barrel mould, and removing the acrylic barrel mould after forming and curing to form silicon rubber insulator components 1 and 2. The inner diameter of the silicon rubber insulator component and the outer diameter of the silicon rubber vacuum switch tube component have interference magnitude of 0.1mm, the silicon rubber insulator component and the silicon rubber vacuum switch tube component are cooled to minus 80 ℃ simultaneously by liquid nitrogen, and then the silicon rubber vacuum switch tube component is pressed into the silicon rubber insulator component along the central shaft, so that the silicon rubber insulator component and the silicon rubber vacuum switch tube component form a split insulator unit. The bottom of the insulator is provided with a fabrication hole which can balance the atmospheric pressure in the pressing process.
The use temperature of the split insulator is-40 ℃ to 70 ℃.
When the insulator and the vacuum switch tube need to be separated, the insulator and the vacuum switch tube can be disassembled and assembled only by cooling to below minus 80 ℃. The structure is simple and practical, and the vacuum switch tube is convenient to replace.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (8)
1. The utility model provides a structure of split type insulator unit, its characterized in that, includes full skirt insulator, vacuum switch tube, be equipped with the two-layer silica gel layer of split type structure between full skirt insulator inner wall and the vacuum switch tube outer wall, be insulator glue film and vacuum switch tube glue film respectively, vacuum switch tube glue film is wrapping up the vacuum switch tube outer wall, and the full skirt insulator inner wall is being wrapped up in the insulator glue film.
2. The split insulator unit structure according to claim 1, wherein the inner wall of the insulator glue layer is in interference fit with the outer wall of the vacuum switch tube glue layer.
3. The split insulator unit structure of claim 2, wherein the shed insulator is provided with a fabrication hole at the bottom.
4. A method for manufacturing the structure of the split insulator unit according to claim 1, 2 or 3, comprising the steps of:
firstly, respectively cleaning and smearing adhesion promoters on the outer wall of a vacuum switch tube and the surface of the inner wall of an insulator, respectively putting the vacuum switch tube and the surface of the inner wall of the insulator into an acrylic barrel mould, pouring a silica gel layer, and removing the acrylic barrel mould after forming and curing silica gel to form a silica gel vacuum switch tube assembly and a silica gel insulator assembly;
and then assembling the silica gel vacuum switch tube component and the silica gel insulator component together.
5. The manufacturing method of the split insulator unit structure according to claim 4, wherein the silica gel vacuum switch tube assembly and the silica gel insulator assembly are cooled to a temperature below a use temperature by using liquid nitrogen, and are assembled together by interference fit.
6. The method for manufacturing the structure of the split insulator unit according to claim 5, wherein the fabrication hole is used for balancing atmospheric pressure during the fitting and pressing-in process.
7. The manufacturing method of the split insulator unit structure according to claim 6, wherein when disassembling, the silicone rubber vacuum switch tube assembly and the silicone rubber insulator assembly are cooled to a temperature below the use temperature by using liquid nitrogen, and then the silicone rubber vacuum switch tube assembly is taken out.
8. The manufacturing method of the split insulator unit structure according to claim 7, wherein the interference magnitude of the interference fit is 0.1mm, and the use temperature of the split insulator unit is-40 ℃ to 70 ℃;
and during assembly and disassembly, the silicon rubber insulator component and the silicon rubber vacuum switch tube component are simultaneously cooled to below 80 ℃ below zero by using liquid nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111649277.3A CN114267500B (en) | 2021-12-29 | 2021-12-29 | Structure and manufacturing method of split insulator unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111649277.3A CN114267500B (en) | 2021-12-29 | 2021-12-29 | Structure and manufacturing method of split insulator unit |
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| CN114267500A true CN114267500A (en) | 2022-04-01 |
| CN114267500B CN114267500B (en) | 2022-12-06 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05205550A (en) * | 1992-01-22 | 1993-08-13 | Ngk Insulators Ltd | Inter phape spacer with detaching mechanism |
| JPH11329123A (en) * | 1998-05-20 | 1999-11-30 | Ngk Insulators Ltd | Envelope structure for compound insulator |
| US20040194839A1 (en) * | 2002-12-20 | 2004-10-07 | Hickman Cole J. | Insulator apparatus for vacuum insulated tubing |
| CN206574627U (en) * | 2017-02-15 | 2017-10-20 | 北京中车赛德铁道电气科技有限公司 | A kind of accurate glue dispensing device of vacuum tube for vacuum circuit breaker |
| CN109509675A (en) * | 2018-12-14 | 2019-03-22 | 北京中车赛德铁道电气科技有限公司 | A kind of insulator structure for protecting vacuum tube |
| CN208955553U (en) * | 2018-09-20 | 2019-06-07 | 沈阳华德海泰电器有限公司 | A kind of ground insulation for high pressure gas insulated switching installation |
| CN210706296U (en) * | 2019-07-29 | 2020-06-09 | 江苏微上新材料科技有限公司 | Silicon rubber glass fiber sleeve convenient to install and detach |
| CN213339877U (en) * | 2020-11-02 | 2021-06-01 | 郭晓银 | Insulator with separated internal framework |
-
2021
- 2021-12-29 CN CN202111649277.3A patent/CN114267500B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05205550A (en) * | 1992-01-22 | 1993-08-13 | Ngk Insulators Ltd | Inter phape spacer with detaching mechanism |
| JPH11329123A (en) * | 1998-05-20 | 1999-11-30 | Ngk Insulators Ltd | Envelope structure for compound insulator |
| US20040194839A1 (en) * | 2002-12-20 | 2004-10-07 | Hickman Cole J. | Insulator apparatus for vacuum insulated tubing |
| CN206574627U (en) * | 2017-02-15 | 2017-10-20 | 北京中车赛德铁道电气科技有限公司 | A kind of accurate glue dispensing device of vacuum tube for vacuum circuit breaker |
| CN208955553U (en) * | 2018-09-20 | 2019-06-07 | 沈阳华德海泰电器有限公司 | A kind of ground insulation for high pressure gas insulated switching installation |
| CN109509675A (en) * | 2018-12-14 | 2019-03-22 | 北京中车赛德铁道电气科技有限公司 | A kind of insulator structure for protecting vacuum tube |
| CN210706296U (en) * | 2019-07-29 | 2020-06-09 | 江苏微上新材料科技有限公司 | Silicon rubber glass fiber sleeve convenient to install and detach |
| CN213339877U (en) * | 2020-11-02 | 2021-06-01 | 郭晓银 | Insulator with separated internal framework |
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| CN114267500B (en) | 2022-12-06 |
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