CN218384648U - Glue-impregnated fiber dry-type sleeve with internal and external insulation integrated structure - Google Patents
Glue-impregnated fiber dry-type sleeve with internal and external insulation integrated structure Download PDFInfo
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- CN218384648U CN218384648U CN202222443136.2U CN202222443136U CN218384648U CN 218384648 U CN218384648 U CN 218384648U CN 202222443136 U CN202222443136 U CN 202222443136U CN 218384648 U CN218384648 U CN 218384648U
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Abstract
The utility model discloses a fibre dry-type sleeve pipe is soaked in glue of internal and external insulation integral structure, it includes cylinder internal insulation electric capacity polar plate, a plurality of first external insulation glues that set up in cylinder internal insulation electric capacity polar plate outer lane soak fibre full skirt and a plurality of second external insulation glues and soaks the fibre full skirt, two adjacent first external insulation glues and soaks and be provided with a second external insulation glue between the fibre full skirt and soak the fibre full skirt, the length of stretching out that first external insulation glue soaks the fibre full skirt is greater than the length of stretching out that the second external insulation glues soaks the fibre full skirt, cylinder internal insulation electric capacity polar plate, all first external insulation glues soaks fibre full skirt and all second external insulation glues soaks fibre full skirt formula structure as an organic whole. The utility model discloses an insulating body structure in the sleeve pipe need not consider the sealed problem between the hollow compound overcoat of sleeve pipe internal insulation core and external insulation, need not to assemble the hollow compound overcoat of external insulation, has improved sheathed tube production efficiency.
Description
Technical Field
The utility model relates to a high-voltage bushing develops technical field, specifically indicates a fibre dry-type sleeve pipe is soaked in glue of internal and external insulation integral 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 the risk of oil leakage, 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 the risk of air leakage in the operation process; the glue-impregnated paper sleeve has the problems of complex physical and chemical properties, high difficulty in core body impregnation and curing process, easiness in moisture absorption, large dielectric loss, high local discharge capacity and the like. In recent years, sleeve accidents in the system are frequent, the sleeve is damaged if the sleeve is damaged, the sleeve is exploded if the sleeve is heavy, power failure of a power grid is caused, the loss power is extremely high, the safe operation of the power grid is seriously influenced, and huge economic loss and social influence are caused. The glue-dipped fiber sleeve has the advantages of no oil, flame retardance, explosion resistance, high mechanical strength, less maintenance and the like, and is made from raw materials to production equipment.
The conventional glue-impregnated fiber dry-type sleeve generally adopts a capacitor core body with glue-impregnated fiber as internal insulation and a ceramic outer sleeve or a composite umbrella skirt structure as external insulation, the matching of the internal insulation and the external insulation is considered in the conventional glue-impregnated fiber structural design, and the problem of space charge accumulation due to the uneven distribution of an electric field caused by the difference of characteristic parameters of materials of the internal and external insulation structures is solved.
Disclosure of Invention
The utility model aims at providing an interior external insulation integral structure's gluey fibre dry-type sleeve pipe that soaks, the utility model discloses an interior external insulation integral structure of sleeve pipe need not consider the sealed problem between sleeve pipe internal insulation core and the hollow compound overcoat of external insulation, need not to assemble the hollow compound overcoat of external insulation, has improved sheathed tube production efficiency.
In order to realize the purpose, the utility model discloses a fibre dry-type sleeve pipe is soaked to glue of internal and external insulation integral structure which characterized in that: the cylindrical inner insulation capacitor comprises a cylindrical inner insulation capacitor plate, a plurality of first outer insulation glue fiber-impregnated sheds and a plurality of second outer insulation glue fiber-impregnated sheds, wherein the first outer insulation glue fiber-impregnated sheds are arranged on the outer ring of the cylindrical inner insulation capacitor plate, one second outer insulation glue fiber-impregnated shed is arranged between every two adjacent first outer insulation glue fiber-impregnated sheds, and the extension length P of each first outer insulation glue fiber-impregnated shed is 1 Is longer than the extension length P of the second external insulation glue soaking fiber umbrella skirt 2 The cylindrical inner insulation capacitor electrode plate, all the first outer insulation glue fiber-impregnated sheds and all the second outer insulation glue fiber-impregnated sheds are of an integrated structure.
The utility model has the advantages that:
the utility model discloses a glue and soak fibre dry-type sleeve pipe internal insulation electric capacity polar plate and external insulation glue and soak the structural design of fibre full skirt, between the adjacent two-layer electric capacity polar plateThe thicknesses are equal, and the same winding procedure is adopted, so that the accumulated winding error is reduced; mechanically processing large and small umbrella skirts for external insulation of the sleeve on a dry sleeve core body with glue-impregnated fiber, firstly, after finishing winding the end screen of the sleeve core body, continuously winding an insulation layer with a certain thickness H on the outer layer, and according to the diameter of the umbrella skirts for external insulation of the sleeve and the extension length P of the large and small umbrella skirts 1 And P 2 (P 1 And P 2 Are all less than H); the utility model discloses a fibre dry-type sleeve pipe is soaked in glue of internal and external insulation integral structure has realized the internal and external insulation integral structure of sleeve pipe, need not consider the sealed problem between the hollow compound overcoat of sleeve pipe internal insulation core and external insulation, need not to assemble the hollow compound overcoat of external insulation, has improved sheathed tube production efficiency.
Drawings
FIG. 1 is a schematic view of the radial cross-section structure of the present invention;
fig. 2 is a schematic cross-sectional view of the cylindrical internal insulation capacitor plate of the present invention;
FIG. 3 is a schematic diagram of the winding of the epoxy resin impregnated glass fiber layer and the capacitive screen layer according to the present invention;
the dashed lines in fig. 3 represent a configuration in which the epoxy impregnated fiberglass layer and the capacitive screen layer are wrapped repeatedly.
The capacitive touch screen comprises 1-cylindrical inner insulation capacitor plate, 1.1-epoxy resin impregnated glass fiber layer, 1.2-capacitor screen layer, 1.3-hollow conduit, 2-first outer insulation glue impregnated fiber umbrella skirt and 3-second outer insulation glue impregnated fiber umbrella skirt.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
the glue-impregnated fiber dry-type bushing with the internal and external insulation integrated structure as shown in fig. 1-3 comprises a cylindrical internal insulation capacitor plate 1, a plurality of first external insulation glue-impregnated fiber sheds 2 (external insulation glue-impregnated fiber large sheds) and a plurality of second external insulation glue-impregnated fiber sheds 3 (external insulation glue-impregnated fiber small sheds) arranged at the outer ring of the cylindrical internal insulation capacitor plate 1, wherein one second external insulation glue-impregnated fiber shed 2 is arranged between every two adjacent first external insulation glue-impregnated fiber shedsThe extension length P of the rubber-impregnated fiber umbrella skirt 3 and the first external insulation rubber-impregnated fiber umbrella skirt 2 1 Is longer than the extension length P of the second external insulation glue soaking fiber umbrella skirt 3 2 The cylindrical inner insulation capacitor plate 1, all the first outer insulation glue fiber-dipped sheds 2 and all the second outer insulation glue fiber-dipped sheds 3 are of an integrated structure.
In the technical scheme, a second outer insulating glue fiber-soaked umbrella skirt 3 is arranged at the middle position between two adjacent first outer insulating glue fiber-soaked umbrella skirts 2.
In the technical scheme, the cylindrical inner insulation capacitor plate 1 comprises a hollow guide pipe 1.3, an epoxy resin impregnated glass fiber layer 1.1 and a capacitor screen layer 1.2, the epoxy resin impregnated glass fiber layer 1.1 and the capacitor screen layer 1.2 are alternately wound on the outer layer of the hollow guide pipe 1.3 to form the cylindrical inner insulation capacitor plate 1, wherein the epoxy resin impregnated glass fiber layer 1.1 is wound on the outer side surface of the hollow guide pipe 1.3, the epoxy resin impregnated glass fiber layer 1.1 is arranged on the outermost side of the cylindrical inner insulation capacitor plate 1, and the roots of the first outer insulation glue impregnated fiber umbrella skirt 2 and the second outer insulation glue impregnated fiber umbrella skirt 3 and the epoxy resin impregnated glass fiber layer 1.1 on the outermost ring of the cylindrical inner insulation capacitor plate 1 are of an integrated structure. Namely, the first layer is a glass fiber layer 1.1 which is impregnated by epoxy resin and is wound on the outer layer of the hollow conduit 1.3, the second layer is a glass fiber layer 1.2 which is impregnated by epoxy resin and is wound on the first layer, the third layer is a glass fiber layer 1.1 which is impregnated by epoxy resin and is wound on the second layer 1.2, the fourth layer is a glass fiber layer 1.2 which is impregnated by epoxy resin and is wound on the third layer 1.1, and then the glass fiber layers are sequentially and alternately wound to the preset number of layers. The hollow guide pipe 1.3 is internally inserted with a copper pipe, so that the requirements of different current quantities are met.
In the technical scheme, the distances between the two adjacent capacitive screen layers 1.2 are equal. The distance between two adjacent capacitive screen layers 1.2 ranges from 2.5 mm to 3.5mm. The winding machine is favorable for setting the same winding procedure, and the accumulated winding error of the sleeve glass fiber composite insulating layer is reduced.
In the technical scheme, the winding angle of the capacitive screen layer 1.2 and the axial direction of the epoxy resin impregnated glass fiber layer 1.1 form an included angle of 30-60 degrees, and the capacitive screen layer is wound on the epoxy resin impregnated glass fiber layer 1.1 in a half compression joint mode.
Among the above-mentioned technical scheme, when the electric capacity screen layer 1.2 twines, electric capacity screen advances on one side twining, and the first round electric capacity screen area half of back round electric capacity screen crimping. The axial width of the capacitive screen on the epoxy resin impregnated glass fiber layer 1 is A, and the last circle of capacitive screen can cover the last circle of capacitive screen, so that the width of the last circle of capacitive screen is only B,2B = A. The design ensures that the electric field inside the sleeve core body is reasonably distributed, and the condition of overlarge local field intensity is avoided.
A production process of a glue-impregnated fiber dry-type sleeve with an internal and external insulation integrated structure comprises the following steps:
step 1: winding the epoxy resin-impregnated glass fiber on a hollow conduit 1.3 by using a winding machine to form a first epoxy resin-impregnated glass fiber layer 1.1, then winding a capacitive screen on the first epoxy resin-impregnated glass fiber layer 1.1 along the axial direction of the epoxy resin-impregnated glass fiber layer 1.1 at an inclination angle of 30-60 degrees to form a capacitive screen layer 1.2, then alternately winding the epoxy resin-impregnated glass fiber layer 1.1 and the capacitive screen layer 1.2 to a preset thickness to form a cylindrical internal insulation capacitive plate 1, wherein the outermost ring of the cylindrical internal insulation capacitive plate 1 is the epoxy resin-impregnated glass fiber layer 1.1, (the winding angle is 10-90 degrees, the winding tension is 10-60 kg, the winding speed is 0-30 r/s, the number of winding layers (a 126kV sleeve is about 16 generally, and the number of winding layers is more when the voltage level is higher) in the winding process);
wherein, the starting point and the end point of winding of each layer of the glass fiber layer 1.1 impregnated by the epoxy resin are always positioned at the two ends of the hollow conduit 1.3, and the starting point and the end point of winding of the capacitive screen layer 1.2 are respectively positioned at the two ends of the hollow conduit 1.3;
step 2: continuously winding a plurality of epoxy resin impregnated glass fiber layers 1.1 on the cylindrical internal insulation capacitor polar plate 1, so that the thickness of the plurality of epoxy resin impregnated glass fiber layers 1.1 wound outside the cylindrical internal insulation capacitor polar plate 1 reaches H;
and step 3: soaking multiple layers of epoxy resin with the thickness of H wound outside the cylindrical inner insulation capacitor plate 1The impregnated glass fiber layer 1.1 is machined by a lathe to form a plurality of first outer insulating glue fiber-impregnated sheds 2 and a plurality of second outer insulating glue fiber-impregnated sheds 3, one second outer insulating glue fiber-impregnated shed 3 is arranged between every two adjacent first outer insulating glue fiber-impregnated sheds 2, and the extension length P of each first outer insulating glue fiber-impregnated shed 2 1 Is longer than the extension length P of the second outer insulating glue soaking fiber umbrella skirt 3 2 。
The winding process of the epoxy resin impregnated glass fiber layer in steps 1 and 2 of the above technical scheme is as follows: after the glass fiber bundles are soaked in the epoxy resin glue solution, the glass fiber bundles are lapped on a shaft of a winding machine, the shaft of the winding machine rotates, a trolley carries the glass fiber bundles to horizontally move, and the winding of the epoxy resin-soaked glass fiber layers is completed, wherein the winding temperature is 80-95 ℃.
In step 3 of the above technical solution, a plurality of epoxy resin impregnated glass fiber layers 1.1 wound outside a cylindrical internal insulation capacitor plate 1 and having a thickness H are machined, a rough machining feed amount is less than or equal to 0.3mm, and a finish machining feed amount is less than or equal to 0.1mm, and the above machining method cuts only the epoxy resin impregnated glass fiber layer 1.1, thereby forming the structures of the plurality of first external insulation resin impregnated fiber sheds 2 and the plurality of second external insulation resin impregnated fiber sheds 3.
The utility model discloses a sleeve pipe internal and external insulation body structure need not consider the sealed problem between the hollow compound overcoat of sleeve pipe internal insulation core and external insulation, need not to assemble the hollow compound overcoat of external insulation, has improved sheathed tube production efficiency.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (7)
1. The utility model provides a glue of internal and external insulation integral structure soaks fibre dry-type sleeve pipe which characterized in that: the novel capacitor comprises a cylindrical inner insulation capacitor polar plate (1), a plurality of first outer insulation glue fiber-soaking sheds (2) and a plurality of second outer insulation glue fiber-soaking sheds (3) which are arranged on the outer ring of the cylindrical inner insulation capacitor polar plate (1), wherein one second outer insulation glue fiber-soaking shed (3) is arranged between every two adjacent first outer insulation glue fiber-soaking sheds (2), and each first outer insulation glue fiber-soaking shed isThe extension length P of the skirt (2) 1 Is longer than the extension length P of the second outer insulating glue soaking fiber umbrella skirt (3) 2 The cylindrical inner insulation capacitor plate (1), all the first outer insulation glue fiber-dipped umbrella skirts (2) and all the second outer insulation glue fiber-dipped umbrella skirts (3) are of an integrated structure.
2. The dry-type tube with internally and externally insulated integral structure made of glue-impregnated fiber according to claim 1, wherein: a second outer insulating glue fiber-soaked umbrella skirt (3) is arranged in the middle between every two adjacent first outer insulating glue fiber-soaked umbrella skirts (2).
3. The dry type bushing of internally and externally insulated integrated structure of claim 1, wherein: the cylindrical inner insulation capacitor plate (1) comprises a hollow guide pipe (1.3), an epoxy resin impregnated glass fiber layer (1.1) and a capacitor screen layer (1.2), the epoxy resin impregnated glass fiber layer (1.1) and the capacitor screen layer (1.2) are alternately wound on the outer layer of the hollow guide pipe (1.3) to form the cylindrical inner insulation capacitor plate (1), the epoxy resin impregnated glass fiber layer (1.1) is wound on the outer side surface of the hollow guide pipe (1.3), the epoxy resin impregnated glass fiber layer (1.1) is arranged on the outermost side of the cylindrical inner insulation capacitor plate (1), and the roots of the first outer insulation glue impregnated fiber umbrella skirt (2) and the second outer insulation glue impregnated fiber umbrella skirt (3) and the epoxy resin impregnated glass fiber layer (1.1) on the outermost ring of the cylindrical inner insulation capacitor plate (1) are of an integrated structure.
4. The dry type bushing of internally and externally insulated integrated structure as claimed in claim 3, wherein: the distances between two adjacent capacitive screen layers (1.2) are equal.
5. The dry type bushing of internally and externally insulated integrated structure as claimed in claim 4, wherein: the distance between two adjacent capacitive screen layers (1.2) is 2.5-3.5mm.
6. The dry type bushing of internally and externally insulated integrated structure as claimed in claim 3, wherein: the winding angle of the capacitance screen layer (1.2) and the axial direction of the epoxy resin impregnated glass fiber layer (1.1) form an included angle of 30-60 degrees, and the capacitance screen layer is wound on the epoxy resin impregnated glass fiber layer (1.1) in a half compression joint mode.
7. The dry type bushing of internally and externally insulated integrated structure as claimed in claim 6, wherein: when capacitive screen layer (1.2) twined, the capacitive screen advances on one side twining, and the one-half of round capacitive screen area before the crimping of back round capacitive screen, and the axial width of capacitive screen on epoxy impregnated glass fiber layer (1.1) is A, and back round capacitive screen can cover last round capacitive screen, makes the width that last round capacitive screen exposes be B,2B =A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222443136.2U CN218384648U (en) | 2022-09-15 | 2022-09-15 | Glue-impregnated fiber dry-type sleeve with internal and external insulation integrated structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222443136.2U CN218384648U (en) | 2022-09-15 | 2022-09-15 | Glue-impregnated fiber dry-type sleeve with internal and external insulation integrated structure |
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| Publication Number | Publication Date |
|---|---|
| CN218384648U true CN218384648U (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222443136.2U Active CN218384648U (en) | 2022-09-15 | 2022-09-15 | Glue-impregnated fiber dry-type sleeve with internal and external insulation integrated structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218384648U (en) |
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- 2022-09-15 CN CN202222443136.2U patent/CN218384648U/en active Active
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