CN210325361U

CN210325361U - Electric power insulator with expansion butt joint structure

Info

Publication number: CN210325361U
Application number: CN201921143822.XU
Authority: CN
Inventors: 赖金兰
Original assignee: Luxi Hengda Ceramics Co Ltd
Current assignee: Luxi Hengda Ceramics Co Ltd
Priority date: 2019-07-21
Filing date: 2019-07-21
Publication date: 2020-04-14
Anticipated expiration: 2029-07-21

Abstract

The utility model relates to an electric power insulator technical field specifically is an electric power insulator with inflation butt joint structure, including sheath, plug, sealed lid, first gold utensil and second gold utensil, sheath outer wall and first gold utensil welding, sealed lid is established to sheath periphery cover, is equipped with the sealing washer between sealed lid and the sheath, and the sealing washer top is equipped with sealed glue, and sealed lid is equipped with the annular ring, and first gold utensil is equipped with the ring channel, is equipped with elastic element in the ring channel, annular ring and elastic element looks butt, the first gold utensil of sealed lid threaded connection, first gold utensil threaded connection second gold utensil, the butt department of sealed lid and second gold utensil is equipped with sealing ring. The beneficial effects are that: the utility model discloses compact structure, easily installation forms first layer seal structure through sealing washer and sealed glue, avoids the tip of sheath to intake to form second floor seal structure through annular piece and elastic element, further avoid the tip of sheath to intake, the insulator waterproof ability is strong.

Description

Electric power insulator with expansion butt joint structure

Technical Field

The utility model relates to an electric power insulator technical field specifically is an electric power insulator with inflation butt joint structure.

Background

The electric power insulator can be divided into a porcelain/glass disc type suspension insulator, a composite insulator, a coated RTV disc type suspension insulator, a porcelain long rod insulator and a disc type suspension porcelain/glass composite insulator according to the material structure type, wherein the most used main network lines are the first 3 types. The composite insulator can be divided into a wedge structure, a bonding structure and a crimping structure according to the end structure. The wedge structure mainly adopts an expansion butt joint mode to match the hardware fitting with the sheath, the structure is complex, the number of sealing interfaces is large, the wedge is driven into the wedge, the core rod is easy to damage, long-term maintenance of mechanical performance of the core rod is not facilitated, and historically, the case that the end of the composite insulator with the wedge structure enters water due to sealing failure for many times and then brittle failure occurs.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric power insulator with inflation butt joint structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an electric power insulator with an expansion butt joint structure comprises a sheath, a core rod, a sealing cover, a first hardware fitting and a second hardware fitting, wherein the core rod is embedded in the sheath, the outer wall of the sheath is welded with a first hardware fitting, the lower surface of the first hardware fitting is provided with a wedge groove, the second hardware fitting is provided with a wedge block matched with the wedge groove, a sealing cover is sleeved on the periphery of the sheath, a sealing ring is arranged between the sealing cover and the sheath, a groove is arranged on the upper surface of the first hardware fitting, the bottom end of the sealing ring extends into the groove, the top end of the sealing ring is provided with a sealing glue, the sealing cover is provided with an annular block which is integrally formed with the sealing cover, the first hardware fitting is provided with an annular groove, an elastic element is arranged in the annular groove, the annular block extends into the annular groove and then is abutted against the elastic element, the sealing cover is in threaded connection with the first hardware fitting, the first hardware fitting is in threaded connection with the second hardware fitting, and a sealing check ring is arranged at the abutting position of the sealing cover and the second hardware fitting.

Preferably, the lower surface of the sealing cover and the upper surface of the second hardware fitting are both provided with annular grooves, the forward vertical section of each annular groove is semicircular, and the sealing check ring is just completely embedded into the annular groove.

Preferably, the wedge block is a conical block, the wedge block and the second hardware fitting are integrally formed, the wedge groove is a conical groove, and the bottom diameter of the wedge groove is smaller than that of the wedge block.

Preferably, the sealant is annularly poured on the sealing ring, the inner ring of the sealant is cemented with the sheath, and the outer ring of the sealant is cemented with the sealing cover.

Preferably, the elastic element is a silica gel ring, and the forward vertical section of the elastic element and the forward vertical section of the annular groove are both inverted isosceles trapezoids.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model has compact structure and easy installation, the first layer of sealing structure is formed by the sealing ring and the sealing glue, the end part of the sheath is prevented from water entering, and the second layer of sealing structure is formed by the annular block and the elastic element, the end part of the sheath is further prevented from water entering, and the waterproof capability of the insulator is strong;

2. the sealing retainer ring is arranged at the butt joint of the sealing cover and the second hardware fitting, so that the sealing cover and the butt joint of the second hardware fitting are ensured to be sealed;

3. the utility model discloses a sealed annular of gluing is pour on the sealing washer for sealed glue can seal the protection sealing washer, avoids the sealing washer ageing and corroded.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is the utility model discloses well sealed lid, first gold utensil and second gold utensil structural schematic.

In the figure: the sealing structure comprises a sheath 1, a core rod 2, a sealing cover 3, a first fitting 4, a wedge groove 401, a groove 402, an annular groove 403, a second fitting 5, a wedge block 6, a sealing ring 7, a sealing glue 8, an annular block 9, an elastic element 10 and a sealing retainer ring 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 2, the present invention provides a technical solution: the utility model provides an electric power insulator with inflation butt joint structure, includes sheath 1, plug 2, sealed lid 3, first gold utensil 4 and

second gold utensil

5, and 1 embedded plug 2 that has of sheath, and 1 outer wall of sheath and the welding of first gold utensil 4, and first gold utensil 4 lower surface is equipped with wedge groove 401, and second gold utensil 5 is equipped with and wedges groove 401 assorted voussoir 6. The wedge 6 is a conical block, the wedge 6 and the second hardware fitting 5 are integrally formed, the wedge groove 401 is a conical groove, and the bottom diameter of the wedge groove 401 is smaller than that of the wedge 6. The core rod 2 is inserted into the fitting hole of the first fitting 4 along with the sheath 1, when the second fitting 5 screws the first fitting 4 gradually, the bottom of the first fitting 4 is extruded by the wedge block 6, the diameter of the bottom of the first fitting 4 can be gradually larger than the diameter of the top of the first fitting 4, so that the fitting hole of the first fitting 4 is extruded towards the core rod 2, the surface of the core rod 2 and the first fitting 4 generate certain friction force, the insulator can bear certain mechanical tensile load, and expansion butt joint is achieved.

As shown in fig. 2, the sealing cover 3 is sleeved on the periphery of the sheath 1, the sealing ring 7 is arranged between the sealing cover 3 and the sheath 1, the upper surface of the first hardware fitting 4 is provided with a groove 402, the bottom end of the sealing ring 7 extends into the groove 402, the top end of the sealing ring 7 is provided with a sealant 8, the sealant 8 adopts a compound of silicone rubber emulsion as a main base material and is doped with an inorganic filler, the sealing ring 7 is annularly poured on the sealing ring 7, an inner ring of the sealant 8 is cemented with the sheath 1, and an outer ring of the sealant 8 is cemented with the sealing cover 3, so that the sealant 8 can seal and protect the sealing ring 7, and the sealing. A first layer of sealing structure is formed between the sealing cover 3 and the sheath 1 through the sealing ring 7 and the sealing glue 8, and water is prevented from entering the end part of the sheath 1. 3 threaded connection first gold utensil 4 of sealed lid, 4 threaded connection second gold utensil 5 of first gold utensil, the butt department of sealed lid 3 and second gold utensil 5 is equipped with sealing ring 11, through seting up the ring channel at 3 lower surfaces of sealed lid and 5 upper surfaces of second gold utensil to set up the forward vertical cross-section of ring channel for semi-circle, make sealing ring 11 imbed the ring channel completely just, guarantee that the butt department of sealed lid 3 and second gold utensil 5 is sealed.

The sealing cover 3 is provided with an annular block 9 integrally formed with the sealing cover, the first hardware fitting 4 is provided with an annular groove 403, an elastic element 10 is arranged in the annular groove 403, the elastic element 10 is a silica gel ring, the forward vertical section of the elastic element 10 and the forward vertical section of the annular groove 403 are both inverted isosceles trapezoids, and the annular block 9 is abutted to the elastic element 10 after extending into the annular groove 403. Along with the rotation of the threads of the sealing cover 3 and the first hardware fitting 4, the annular block 9 can gradually press the elastic element 10, so that the elastic element 10 can be in expanded fit with the first hardware fitting 4, and the annular block 9 and the elastic element 10 form a second-layer sealing structure, thereby further avoiding the water from entering the end part of the sheath 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an electric power insulator with inflation butt joint structure, includes sheath (1), plug (2), sealed lid (3), first gold utensil (4) and second gold utensil (5), sheath (1) is embedded to have plug (2), and sheath (1) outer wall and first gold utensil (4) welding, first gold utensil (4) lower surface is equipped with wedge groove (401), second gold utensil (5) be equipped with wedge groove (401) assorted voussoir (6), its characterized in that: a sealing cover (3) is sleeved on the periphery of the sheath (1), a sealing ring (7) is arranged between the sealing cover (3) and the sheath (1), a groove (402) is formed in the upper surface of the first hardware fitting (4), the bottom end of the sealing ring (7) extends into the groove (402), the top end of the sealing ring (7) is provided with a sealing glue (8), the sealing cover (3) is provided with an annular block (9) which is integrally formed with the sealing cover, the first hardware fitting (4) is provided with an annular groove (403), an elastic element (10) is arranged in the annular groove (403), the annular block (9) extends into the annular groove (403) and then abuts against the elastic element (10), the sealing cover (3) is in threaded connection with a first hardware fitting (4), the first hardware fitting (4) is in threaded connection with a second hardware fitting (5), and a sealing retainer ring (11) is arranged at the abutting position of the sealing cover (3) and the second hardware fitting (5).

2. An electric insulator with an expansion butt joint structure according to claim 1, characterized in that: annular grooves are formed in the lower surface of the sealing cover (3) and the upper surface of the second hardware fitting (5), the forward vertical section of each annular groove is semicircular, and the sealing check ring (11) is just completely embedded into the annular groove.

3. An electric insulator with an expansion butt joint structure according to claim 1, characterized in that: the wedge block (6) is a conical block, the wedge block (6) and the second hardware fitting (5) are integrally formed, the wedge groove (401) is a conical groove, and the diameter of the bottom of the wedge groove (401) is smaller than that of the bottom of the wedge block (6).

4. An electric insulator with an expansion butt joint structure according to claim 1, characterized in that: the sealing glue (8) is annularly poured on the sealing ring (7), the inner ring of the sealing glue (8) is cemented with the sheath (1), and the outer ring of the sealing glue (8) is cemented with the sealing cover (3).

5. An electric insulator with an expansion butt joint structure according to claim 1, characterized in that: the elastic element (10) is a silica gel ring, and the forward vertical section of the elastic element (10) and the forward vertical section of the annular groove (403) are both inverted isosceles trapezoids.