CN214505160U - Composite insulator for rail transit - Google Patents
Composite insulator for rail transit Download PDFInfo
- Publication number
- CN214505160U CN214505160U CN202120819200.5U CN202120819200U CN214505160U CN 214505160 U CN214505160 U CN 214505160U CN 202120819200 U CN202120819200 U CN 202120819200U CN 214505160 U CN214505160 U CN 214505160U
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- insulating
- core rod
- section
- insulating core
- composite insulator
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Abstract
The utility model discloses a composite insulator for track traffic, which comprises a fixed section and an electricity connection section made of metal materials, wherein an insulating core rod is arranged between the fixed section and the electricity connection section, an insulating umbrella skirt is wrapped outside the insulating core rod, and a convex ring and/or an annular groove are arranged on the periphery of the insulating core rod between the fixed section and the electricity connection section; by adopting the insulator with the structure, the creepage distance is increased because the convex ring and the groove are arranged on the periphery of the insulating core rod, the current is prevented from puncturing the surface of the core rod, the insulating property of the insulator is improved, and the yield is improved.
Description
Technical Field
The utility model relates to an insulator especially relates to compound insulator for track traffic.
Background
The composite insulator comprises metal pieces, insulating mandrels are arranged between the metal pieces and are connected with the metal pieces, insulating sheds are wrapped outside the insulating mandrels to improve creepage distance, the insulating sheds are generally made of silica gel, the insulating sheds are wrapped outside the insulating mandrels through a vulcanization process, the process operation requirement is high, local composite is not firm due to defects in the process, and therefore the insulating effect between the mandrels and the insulating sheds is affected, and the surfaces of the mandrels are punctured by current.
SUMMERY OF THE UTILITY MODEL
In order to avoid the electric current to puncture the plug surface, improve plug surface insulation performance and yield, the utility model discloses the technical scheme who adopts is:
the utility model provides a composite insulator for track traffic, is including the canned paragraph of metal material with connect the electricity section the canned paragraph with connect and be equipped with insulating plug between the electricity section insulating plug outer parcel have an insulating shed insulating plug periphery be equipped with arrange in the canned paragraph and connect bulge loop and or the annular between the electricity section.
Furthermore, at least two convex rings or ring grooves are arranged.
Furthermore, two ends of the insulating core rod are respectively embedded into the fixing section and the power connection section in a pressing mode.
By adopting the insulator with the structure, the creepage distance is increased because the convex ring and the groove are arranged on the periphery of the insulating core rod, the current is prevented from puncturing the surface of the core rod, the insulating property of the insulator is improved, and the yield is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an insulating core rod in example 1;
fig. 3 is a schematic structural view of an insulating core rod in example 2.
Detailed Description
The composite insulator shown in figure 1 comprises a fixed section 1 and an electric connection section 2, wherein the fixed section and the electric connection section 2 are both metal pieces, an insulating core rod 3 is arranged between the fixed section 1 and the electric connection section 2, an insulating shed 4 wraps the insulating core rod 3, the insulating shed 4 is wrapped outside the insulating core rod 3 in an injection molding way by adopting a vulcanization encapsulation process, an adhesive is coated on the periphery of the insulating core rod 3 during vulcanization encapsulation to ensure that the insulating shed 4 and the insulating core rod are firmly compounded, in order to avoid the generation of defects between the insulating shed 4 and the insulating core rod 3 in the compounding process, current flows into the fixed section 1 from the electric connection section 2 through a gap to puncture the surface of the insulating core rod 3, a convex ring 5 and/or a ring groove 6 are arranged on the periphery of the insulating core rod 3 as shown in figure 2 or 3, and the convex ring 5 and the ring groove 6 are arranged between the fixed section 1 and the electric connection section 2, which is equivalent to the arrangement that a shed structure is arranged on the surface of the insulating core rod 3, the creepage distance on the surface of the insulating core rod 3 is increased, so that even if the insulating core rod 3 and the insulating shed 4 are vulcanized and compounded insecurely due to the defects existing in the vulcanization process when the insulating core rod 3 and the insulating shed 4 are compounded, the insulating core rod 3 cannot be punctured by current, and the insulating property of the insulator is improved.
Causes of poor bonding vulcanization: the product needs to press the core rod between the fixing section and the electric connection section metal pieces at two ends, so that a part of the core rod enters the metal pieces, the effective distance of the core rod is shortened, the distance between the two metal pieces is shortened, but the product needs to ensure higher safety factor of about 30 times voltage, and the core rod cannot be broken down when reaching 60KV, the safety distance is far from being insufficient, so that higher requirements are provided for vulcanization bonding, a vulcanization bonding interface, namely the combined part between the umbrella sleeve and the insulating core rod, cannot have a thread defect, a series of process parameters such as cleaning degree of the bonding surface, coating uniformity of an adhesive, drying time and temperature of the coated interface, time when entering a mold for injection encapsulation, pressure, mold temperature and the like have higher requirements, and even if the product can be perfectly, the product cannot be broken down under the specified safety factor voltage, the yield is very low. By adopting the method for adding the lug boss or the groove on the insulating core rod, the distance between the surfaces of the insulating core rods can be increased, so that the creepage distance between the metal pieces at the two end parts is increased, the process has operability, and the yield is improved.
In order to further increase the creepage distance of the surface of the insulating core rod 3, at least two of the collars 5 or the ring grooves 6 are provided.
Moreover, the structure is more suitable for the insulator with the structure that the two ends of the insulating core rod 3 are embedded into the fixed section 1 and the power connection section 2, and the insulator is easier to be punctured because the straight line distance between the fixed section 1 and the power connection section 2 along the surface of the insulating core rod is shorter in the structure.
Claims (3)
1. The utility model provides a composite insulator for track traffic, including metal material's canned paragraph (1) with connect electric section (2) canned paragraph (1) with connect and be equipped with insulating plug (3) between electric section (2) insulating plug (3) outer parcel have insulating full skirt (4), its characterized in that: the periphery of the insulating core rod (3) is provided with a convex ring (5) and/or a ring groove (6) which are arranged between the fixed section (1) and the power connection section (2).
2. The composite insulator for rail transit according to claim 1, wherein: at least two convex rings (5) or at least two annular grooves (6) are arranged.
3. The composite insulator for rail transit according to claim 1 or 2, wherein: two ends of the insulating core rod (3) are respectively embedded into the fixing section (1) and the power connection section (2) in a pressing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120819200.5U CN214505160U (en) | 2021-04-20 | 2021-04-20 | Composite insulator for rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120819200.5U CN214505160U (en) | 2021-04-20 | 2021-04-20 | Composite insulator for rail transit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214505160U true CN214505160U (en) | 2021-10-26 |
Family
ID=78203414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120819200.5U Active CN214505160U (en) | 2021-04-20 | 2021-04-20 | Composite insulator for rail transit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214505160U (en) |
-
2021
- 2021-04-20 CN CN202120819200.5U patent/CN214505160U/en active Active
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