Pin type composite insulator

Abstract

The utility model discloses a needle-type composite insulator, comprising a core rod, the upper part of the core rod is sleeved with a ternary isoethylene sealing ring and a polytetrafluoroethylene sealing ring, the top end of the core rod is coated with an adhesive and is connected with an HDPE needle-type head, an aluminum magnesium alloy wire is wound and bound through an iron binding wire, and the aluminum binding wire is wound on the iron binding wire and is wound and bound with the top end of the HDPE needle-type head; the bottom end of the core rod is bonded with a PVC crystal pad and is connected with the column type fitting, the column type fitting is connected with the bolt group, and a silicon rubber umbrella cover is arranged outside the HDPE needle type head, the core rod and the column type fitting. According to the utility model, the abrasion of the cable sheath during binding is reduced, the service life of the insulator is greatly prolonged, the replacement cost of the damaged insulator is saved, and the bending strength and tensile strength of the product are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of composite insulators, in particular to a pin-type composite insulator. Background Art

[0002] The wires of overhead distribution lines are generally fixed on straight pole pin insulators and tension pole butterfly insulators by wire binding and winding. With the rapid development of the insulator industry, in practical applications, the wire binding area of ​​the head of conventional pin-type composite insulators is a metal component. Firstly, due to the ferromagnetic principle, a strong electric field is easily formed, which reduces the service life of the insulator. Secondly, the metal pin-type hardware is easy to damage the wire and cause accidents, which increases the failure maintenance rate. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a pin-type composite insulator.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a pin-type composite insulator comprises a core rod, the upper part of the core rod is sleeved with a ternary isobutylene sealing ring and a polytetrafluoroethylene sealing ring, the top of the core rod is coated with an adhesive and connected to a HDPE pin-type head, the aluminum-magnesium alloy conductor is bound by winding an iron binding wire, the aluminum binding wire is wound around the iron binding wire and the top of the HDPE pin-type head is bound; the bottom end of the core rod is bonded with a PVC crystal pad and connected to a columnar hardware, the columnar hardware is connected to a bolt group, and a silicone rubber umbrella sleeve is installed outside the HDPE pin-type head, the core rod and the columnar hardware.

[0005] Furthermore, the ternary isobutylene sealing ring is located below the polytetrafluoroethylene sealing ring.

[0006] Furthermore, the core rod is crimped with the columnar fitting.

[0007] Furthermore, a silicone rubber umbrella cover is installed on the HDPE needle head, core rod and column fittings through an injection process.

[0008] The utility model reduces the wear of the cable sheath during binding and use, greatly prolongs the service life of the insulator, saves the cost of replacing the damaged insulator, and enhances the bending strength and tensile strength of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model.

[0010] Among them: 1. HDPE needle head, 2. Silicone rubber umbrella sleeve, 3. Mandrel, 4. Column hardware, 5. Bolt group, 6. PVC crystal pad, 7. Polytetrafluoroethylene sealing ring, 8. Ternary isobutylene sealing ring, 9. Adhesive, 10. Aluminum-magnesium alloy conductor, 11. Iron binding wire, 12. Aluminum binding wire. DETAILED DESCRIPTION

[0011] The following is combined with Figure 1 The specific implementation methods of the utility model are further described.

[0012] The pin-type composite insulator comprises a core rod 3, the upper part of which is provided with a ternary isocyanate sealing ring 8 and a polytetrafluoroethylene sealing ring 7, the ternary isocyanate sealing ring 8 is located below the polytetrafluoroethylene sealing ring 7, the top of the core rod 3 is coated with an adhesive 9 and connected to a HDPE pin-type head 1, an aluminum-magnesium alloy conductor 10 is bound by winding an iron binding wire 11, an aluminum binding wire 12 is bound by winding the iron binding wire 11 and the top of the HDPE pin-type head 1; a PVC crystal pad 6 is bonded to the bottom end of the core rod 3 and connected to a columnar hardware 4, the core rod 3 is crimped with the columnar hardware 4, the columnar hardware 4 is connected to a bolt group 5, and a silicone rubber umbrella sleeve 2 is installed on the outside of the HDPE pin-type head 1, the core rod 3 and the columnar hardware 4 through an injection process.

[0013] First, the upper end of the core rod 3 is bound with a polytetrafluoroethylene sealing ring 7 and a ternary isobutylene sealing ring 8, a PVC crystal pad 6 is bonded to the lower end of the core rod 3, and an adhesive 9 is applied to the upper end. Then, the core rod 3 is tightly connected to the columnar hardware 4 and the HDPE needle head 1 through a crimping process. The PVC crystal pad 6 is used to increase the structural height of the product, and the polytetrafluoroethylene sealing ring 7, the ternary isobutylene sealing ring 8 and the adhesive 9 are used to increase the tensile strength and bending strength of the entire product. Then, the silicone rubber umbrella cover 2 is bonded to the entire crimped product through an injection process. The lower end of the columnar hardware 4 is connected to a bolt group 5 for fixing the product. The iron binding wire 11 is used to wrap the aluminum-magnesium alloy conductor 10 for a section, and then the aluminum binding wire 12 and the wrapped end of the iron binding wire 11 are wrapped and fixed to the HDPE needle head 1.

[0014] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical scheme and utility model concept of the utility model, shall be covered by the protection scope of the utility model.

Claims

1. Pin-type composite insulator, characterized in that: The invention comprises a core rod (3), the upper part of which is provided with a ternary isobutylene sealing ring (8) and a polytetrafluoroethylene sealing ring (7), the top of the core rod (3) is coated with an adhesive (9) and connected to a HDPE needle head (1), an aluminum-magnesium alloy conductor (10) is wound and bound by an iron binding wire (11), an aluminum binding wire (12) is wound and bound by the iron binding wire (11) and the top of the HDPE needle head (1) is wound and bound; a PVC crystal pad (6) is bonded to the bottom end of the core rod (3) and connected to a columnar hardware (4), the columnar hardware (4) is connected to a bolt group (5), and a silicone rubber umbrella cover (2) is installed outside the HDPE needle head (1), the core rod (3) and the columnar hardware (4).

2. The pin-type composite insulator according to claim 1, characterized in that: The ternary isocyanate sealing ring (8) is located below the polytetrafluoroethylene sealing ring (7).

3. The pin-type composite insulator according to claim 1, characterized in that: The core rod (3) is crimped with the columnar hardware (4).

4. The pin-type composite insulator according to claim 1, characterized in that: The HDPE needle head (1), the core rod (3) and the columnar hardware (4) are installed with a silicone rubber umbrella cover (2) through an injection process.

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