CN217719164U - Glue-impregnated fiber dry-type sleeve with sleeve type structure - Google Patents
Glue-impregnated fiber dry-type sleeve with sleeve type structure Download PDFInfo
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- CN217719164U CN217719164U CN202221966232.9U CN202221966232U CN217719164U CN 217719164 U CN217719164 U CN 217719164U CN 202221966232 U CN202221966232 U CN 202221966232U CN 217719164 U CN217719164 U CN 217719164U
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Abstract
The utility model discloses a dry type sleeve of glue-impregnated fiber with a sleeve type structure, which comprises a conductive rod and a plurality of cylindrical sleeves, wherein the cylindrical sleeves are coaxially sleeved, each cylindrical sleeve comprises a demoulding protective layer, a capacitor plate layer and an insulating layer, the capacitor plate layer in each cylindrical sleeve is wound on the outer ring of the demoulding protective layer, and the insulating layer is wound on the outer ring of the capacitor plate layer; in two adjacent cylindrical sleeves, the demoulding protective layer of the cylindrical sleeve on the outer side is fixedly connected with the insulating layer of the cylindrical sleeve on the inner side through an injection glue layer, and the demoulding protective layer of the cylindrical sleeve on the innermost side is wound on the outer ring of the conducting rod. The utility model discloses a glue and soak fiber sleeve pipe has oil-free, mechanical strength is high, maintain less, inside electric field distribution advantage such as reasonable.
Description
Technical Field
The utility model relates to a power transmission and transformation equips technical field, specifically indicates a fibre dry-type sleeve pipe is soaked in gluey of telescopic structure.
Background
The high-voltage AC/DC sleeve is used for leading a current-carrying conductor to pass through a metal box body or a wall body of equipment with different electric potentials in an electric power system, leading in or leading out full voltage and full current, and plays roles of insulation and mechanical support. The traditional oil paper sleeve has oil leakage risk, and the SF6 gas insulation sleeve has the advantages of relatively simple structure, light weight, good heat dissipation performance, strong through-flow capacity, convenience in operation and maintenance and the like, but has air leakage risk in the operation process; the main insulating material of the glue-impregnated paper sleeve has complex physical and chemical properties, the difficulty of a core body impregnation curing process is high, moisture absorption is easy, and the problems of large dielectric loss, high local discharge capacity and the like can be caused.
Disclosure of Invention
The invention aims to provide a rubber-impregnated fiber dry-type sleeve with a sleeve type structure, and the rubber-impregnated fiber dry-type sleeve has the advantages of no oil, high mechanical strength, less maintenance, reasonable internal electric field distribution and the like.
In order to achieve the purpose, the glue-impregnated fiber dry-type sleeve with the sleeve type structure comprises a conductive rod and a plurality of cylindrical sleeves, wherein the cylindrical sleeves are coaxially sleeved, each cylindrical sleeve comprises a demolding protection layer, a capacitance plate layer and an insulation layer, the capacitance plate layer in each cylindrical sleeve is wound on the outer ring of the demolding protection layer, and the insulation layer is wound on the outer ring of the capacitance plate layer;
in two adjacent cylindrical sleeves, the demoulding protective layer of the cylindrical sleeve on the outer side is fixedly connected with the insulating layer of the cylindrical sleeve on the inner side through an injection glue layer, and the demoulding protective layer of the cylindrical sleeve on the innermost side is wound on the outer ring of the conducting rod.
The utility model has the advantages that:
the utility model discloses a mode of the coaxial suit of a plurality of cylinder parts, every cylinder part comprises one deck drawing of patterns protective layer, one deck electric capacity polar plate and one deck insulating layer, the length and the thickness of the drawing of patterns layer of each cylinder part are equal, the length and the thickness of insulating layer are also equal, and the electric capacity polar plate length of each cylinder part is according to insulating design requirement (thickness unanimous), make glue soak fibre dry-type sleeve pipe core inside electric field distribution reasonable, the too big condition of local field intensity does not appear, and glue soak fibre sleeve pipe have not have oil, fire-retardant explosion-proof, mechanical strength is high, advantages such as few maintenance; meanwhile, the design solves the problem that the core body of the glue-impregnated fiber dry-type sleeve needs to be wound again due to the fact that a break fault occurs in the winding process, and the production efficiency of the sleeve is improved.
Drawings
Fig. 1 is a radial cross-sectional view of a dry sleeve of the present invention;
FIG. 2 is a radial cross-sectional view of two adjacent cylindrical sleeves according to the present invention;
fig. 3 is a schematic view of the winding manner of the middle semi-conductive belt of the present invention.
In fig. 1, the cylindrical sleeve of the outer turns is omitted.
The capacitor comprises a conductive rod 1, a cylindrical sleeve 2, a demoulding protective layer 2.1, a capacitor plate layer 2.2, an insulating layer 2.3 and an adhesive injection layer 3.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
the dry type sleeve with the sleeve type structure of the glue-impregnated fiber as shown in fig. 1 and 2 comprises a conductive rod 1 and a plurality of cylindrical sleeves 2, wherein the plurality of cylindrical sleeves 2 are coaxially sleeved, each cylindrical sleeve 2 comprises a demoulding protective layer 2.1, a capacitance plate layer 2.2 and an insulating layer 2.3, the capacitance plate layer 2.2 in each cylindrical sleeve 2 is wound on the outer ring of the demoulding protective layer 2.1, and the insulating layer 2.3 is wound on the outer ring of the capacitance plate layer 2.2;
in two adjacent cylindrical sleeves 2, the demolding protection layer 2.1 of the outer cylindrical sleeve 2 is fixedly connected with the insulating layer 2.3 of the inner cylindrical sleeve 2 through the injection glue layer 3, and the demolding protection layer 2.1 of the innermost cylindrical sleeve 2 is wound on the outer ring of the conducting rod 1.
In the technical scheme, cylindrical parts with different diameters are wound firstly, and each cylindrical part is independently wound on winding dies with different diameters, so that each cylindrical part needs a demolding layer to be conveniently separated from the winding dies, each cylindrical part comprises a capacitance screen and an insulating layer, the three-layer structure is combined into the independent cylindrical part, then a plurality of cylindrical parts are sleeved together, epoxy resin glue solution is injected into a hollow part between every two cylinders, and after the epoxy resin glue solution is cured, the plurality of cylindrical parts become a whole solid structure; compared with the traditional continuous winding of the glue-impregnated fiber sleeve, the method can avoid the phenomenon that one layer is mistakenly wound and needs to be wound again, and improves the production efficiency of the sleeve.
In the above technical solution, the lengths of the mold release protection layers 2.1 of all the cylindrical sleeves 2 are equal, the thicknesses of the mold release protection layers 2.1 of all the cylindrical sleeves 2 are equal, the lengths of the capacitor plate layers 2.2 of all the cylindrical sleeves 2 are equal, the thicknesses of the capacitor plate layers 2.2 of all the cylindrical sleeves 2 are equal, the lengths of the insulation layers 2.3 of all the cylindrical sleeves 2 are equal, and the thicknesses of the insulation layers 2.3 of all the cylindrical sleeves 2 are equal. The equal-thickness design is beneficial to the winding machine to set the same winding procedure, and the accumulated error of glass fiber winding is reduced.
In the above technical solution, the thickness range of the capacitor plate layer 2.2 is 0.3-0.5 mm. The thickness range of the demoulding protective layer 2.1 is 0.5-1 mm. The thickness range of the insulating layer 2.3 is 2.5-3.5 mm, and the length is according to the insulating design requirement. The electric field inside the glue-dipped fiber dry-type sleeve core body is distributed reasonably, and the condition of overlarge local field intensity is avoided. The size design is set according to the insulating property of the material, and the minimum thickness is set, so that the discharge breakdown inside the sleeve is avoided;
in the above technical solution, the demolding protection layer 2.1 of the innermost cylindrical sleeve 2 is formed by winding the glass fiber bundle impregnated with the epoxy resin glue solution on the conductive rod 1, the capacitor plate layer 2.2 is formed by winding the semiconductive material (semiconductive tape) on the demolding protection layer 2.1, and the insulation layer 2.3 is formed by winding the glass fiber bundle impregnated with the epoxy resin glue solution on the capacitor plate layer 2.2.
In the technical scheme, the demolding protection layer 2.1 of the non-innermost cylindrical sleeve 2 is formed by winding the glass fiber bundle impregnated with the epoxy resin glue solution on the surface of the corresponding metal cylindrical die, the surface of the metal cylindrical die is coated with the demolding liquid, the capacitor plate layer 2.2 is formed by winding the semiconductor material on the demolding protection layer 2.1, and the insulation layer 2.3 is formed by winding the glass fiber bundle impregnated with the epoxy resin glue solution on the capacitor plate layer 2.2.
In the technical scheme, the semi-conductive belt is wound on the demoulding protective layer 2.1 in a half compression joint mode, and the capacitor plate layer 2.2 has no gap and uniform thickness. That is, the winding angle of the capacitor electrode plate layer 2.2 forms an angle of 30 to 60 degrees with the axial direction of the mold release protective layer 2.1, and during winding, the semi-conductive tape advances while winding, and the latter semi-conductive tape is pressed to be half of the area of the former semi-conductive tape. The axial width of the semi-conducting belt on the demolding protection layer 2.1 is A, the last semi-conducting belt can cover the last semi-conducting belt, the exposed width of the last semi-conducting belt is only B,2B = A, as shown in fig. 3, the semi-conducting belt is wound in a half compression joint mode, the phenomenon of gaps or uneven thickness is avoided, and the capacitor plate layer 2.2 is kept free of gaps.
In the above technical scheme, the glue injection layer 3 is made of epoxy resin mixed glue solution.
The processing method of the glue-impregnated fiber dry-type sleeve with the sleeve type structure comprises the following steps:
step 1: impregnating the glass fiber bundle with epoxy resin glue solution, and winding the glass fiber bundle on the conducting rod 1 to form a demoulding protective layer 2.1 of the cylindrical sleeve 2 at the innermost side;
step 2: winding a semiconductor material on the demoulding protective layer 2.1 of the innermost cylindrical sleeve 2 to form a capacitance electrode plate layer 2.2 of the innermost cylindrical sleeve 2;
and 3, step 3: impregnating the glass fiber bundles with epoxy resin glue solution, and winding the glass fiber bundles on the capacitor plate layer 2.2 to form an insulating layer 2.3 of the cylindrical sleeve 2 at the innermost side;
and 4, step 4: according to the size requirement of the dry-type sleeve, winding glass fiber bundles impregnated with epoxy resin glue solution on the surfaces of metal cylindrical molds with various radiuses to form demolding protection layers 2.1 of the non-innermost cylindrical sleeves 2;
and 5: winding a semiconductor material on the demoulding protective layer 2.1 of each non-innermost cylindrical sleeve 2 to form a capacitance plate layer 2.2 of each non-innermost cylindrical sleeve 2;
and 6: impregnating the glass fiber bundles with epoxy resin glue solution, and winding the glass fiber bundles on the capacitor plate layer 2.2 of each non-innermost cylindrical sleeve 2 to form an insulating layer 2.3 of each non-innermost cylindrical sleeve 2;
and 7: demoulding protection layers 2.1 of all non-innermost cylindrical sleeves 2 are demoulded with corresponding metal cylindrical moulds, all the cylindrical sleeves 2 are sequentially and coaxially sleeved according to diameter size (the central position of each cylindrical part is ensured not to be deviated), in two adjacent cylindrical sleeves 2, the demoulding protection layer 2.1 of the outer cylindrical sleeve 2 is fixedly connected with an insulating layer 2.3 of the inner cylindrical sleeve 2 through an injection glue layer 3, the demoulding protection layer 2.1 of the innermost cylindrical sleeve 2 is wound on the outer ring of a conducting rod 1, the whole is placed in an oven for curing, the curing temperature is about 130-140 ℃, then machining (the coaxially mounted sleeves need to be assembled by a lathe according to size to cut off redundant parts on the surface) and parts (assembling of a flange, a tail part pressure equalizing ball, a wiring board and the like) is carried out, and the manufacturing of the glue-impregnated fiber dry type sleeve with the sleeve type structure is finished.
And after the epoxy resin glue solution is injected into the glue injection layer 3 by adopting an injector, performing vacuum glue injection to fill a gap between the two cylindrical components.
In step 7 of the technical scheme, the surface of the metal cylinder mould is coated with the demoulding solution, so that the metal cylinder mould can be conveniently separated from the metal mould in the later period.
The utility model provides a glue and soak fibre dry-type sleeve pipe core winding in-process and appear being interrupted trouble and need twine problem again, traditional glue soaks the fibre sleeve pipe and need in succession with glass fiber flooding epoxy resin glue solution after, the winding is the insulating layer of certain length and certain thickness on the conducting rod, twine the semiconductor material of certain length as the electric capacity polar plate after that, then at the insulating layer of the certain thickness of winding, twine the electric capacity polar plate again, so alternate interval winding (the concrete number of piles is set for according to different model sleeve pipes), this just leads to a problem, there is the mistake when certain one deck insulating layer and electric capacity polar plate size winding, so need rewind, and the utility model discloses a regard each insulating layer and polar plate as the independent part, can twine the back respectively, carry out unified assembly, avoided this problem. The production efficiency of the sleeve is improved.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (5)
1. A glue soaks fibre dry-type sleeve pipe of telescopic structure which characterized in that: the capacitor comprises a conducting rod (1) and a plurality of cylindrical sleeves (2), wherein the plurality of cylindrical sleeves (2) are coaxially sleeved, each cylindrical sleeve (2) comprises a demolding protection layer (2.1), a capacitor plate layer (2.2) and an insulation layer (2.3), the capacitor plate layer (2.2) is wound on the outer ring of the demolding protection layer (2.1) in each cylindrical sleeve (2), and the insulation layer (2.3) is wound on the outer ring of the capacitor plate layer (2.2);
in two adjacent cylindrical sleeves (2), the demolding protection layer (2.1) of the outer cylindrical sleeve (2) is fixedly connected with the insulating layer (2.3) of the inner cylindrical sleeve (2) through the glue injection layer (3), and the demolding protection layer (2.1) of the innermost cylindrical sleeve (2) is wound on the outer ring of the conducting rod (1).
2. The dry sleeve with bushing structure according to claim 1, wherein: the lengths of the demoulding protection layers (2.1) of all the cylindrical sleeves (2) are equal, the thicknesses of the demoulding protection layers (2.1) of all the cylindrical sleeves (2) are equal, the lengths of the capacitor plate layers (2.2) of all the cylindrical sleeves (2) are equal, the thicknesses of the capacitor plate layers (2.2) of all the cylindrical sleeves (2) are equal, the lengths of the insulation layers (2.3) of all the cylindrical sleeves (2) are equal, and the thicknesses of the insulation layers (2.3) of all the cylindrical sleeves (2) are equal.
3. The dry sleeve with bushing structure according to claim 1, wherein: the thickness range of the capacitor plate layer (2.2) is 0.3-0.5 mm.
4. The dry tube of impregnated fiber with gum of sleeve construction as set forth in claim 1, wherein: the thickness range of the demoulding protective layer (2.1) is 0.5-1 mm.
5. The dry tube of impregnated fiber with gum of sleeve construction as set forth in claim 1, wherein: the thickness range of the insulating layer (2.3) is 2.5-3.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221966232.9U CN217719164U (en) | 2022-07-28 | 2022-07-28 | Glue-impregnated fiber dry-type sleeve with sleeve type structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221966232.9U CN217719164U (en) | 2022-07-28 | 2022-07-28 | Glue-impregnated fiber dry-type sleeve with sleeve type structure |
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| Publication Number | Publication Date |
|---|---|
| CN217719164U true CN217719164U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221966232.9U Active CN217719164U (en) | 2022-07-28 | 2022-07-28 | Glue-impregnated fiber dry-type sleeve with sleeve type structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217719164U (en) |
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2022
- 2022-07-28 CN CN202221966232.9U patent/CN217719164U/en active Active
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