CN210326912U

CN210326912U - Grading and shielding ring

Info

Publication number: CN210326912U
Application number: CN201921637190.2U
Authority: CN
Inventors: 史骏辰; 俞佳
Original assignee: Yixing Tianyi Precision Casting Co ltd
Current assignee: Yixing Tianyi Precision Casting Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-04-14
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a grading and shielding ring, including ring body, support and fastening components, the ring body is the hollow tube structure, and leaves a breach on the ring body, and the elongated slot has been seted up to the inboard of ring body, and the ring body is equipped with a plurality of wash ports, and the both ends of support are connected in the lateral wall of ring body, and the support is outside protrusion form setting for the ring body, and fastening components installs in the support, forms hollow holding portion between fastening components and the support. The utility model discloses simple structure, it is convenient to fix a position the installation, and ring body and support adopt aluminum product integral type casting shaping, and the ring body is hollow and the design of slotting, whole light in weight, and the ring body fluting adds establishes the wash port, and the clearance in the later stage of being convenient for can not ooze water and lead to inside ponding and influence the performance.

Description

Grading and shielding ring

Technical Field

The utility model relates to a technical field of transmission line protection gold utensil, more specifically relates to a grading and shielding ring.

Background

At present, China has become a large direct current transmission country with the largest direct current projects, the largest capacity and the longest lines in the world. Commonly used gold utensil among transmission line, including fastener, link plate, bolt etc. have the part of edge and corner under the high voltage, the sharp high potential gradient of gold utensil will produce strong corona, and gold utensil surface electric field intensity is the characteristic value of whether the surface of representation gold utensil takes place the corona, consequently need cover the voltage-sharing shield ring in insulator and gold utensil outside in order to avoid above-mentioned condition to take place.

The grading and shielding ring has both grading and shielding functions and is an important part on the insulator string. At present, most of pressure-equalizing shielding rings used in China are made of steel or aluminum, supports are directly welded on ring bodies, and the supports are fixed on hardware fittings or equipment to be subjected to pressure-equalizing shielding. The grading and shielding ring adopted at present has some defects: firstly, the steel material needs to be galvanized, and the whole weight is large; secondly, the bracket and the ring body are connected by welding, and the strength does not reach the standard due to welding cancellation, so that huge potential safety hazards exist; thirdly, when parts are welded, the defects of cracks, craters, burning-through and the like at welding points of the pipe body can be caused, especially, the welding requirement of aluminum materials is higher, so that products are easy to be poor, and if holes appear in the ring body, rainwater can cause water accumulation in the ring body to influence the performance; fourthly, the installation and positioning of the bracket are troublesome, the rotation is easy to cause, and even the loosening condition after the installation is generated.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a voltage-sharing shield ring fixes a position easily during the assembly, need not welding, light in weight, can not have ponding, and the security performance is high.

According to the utility model discloses an aspect provides a voltage-sharing shielding ring, and it includes ring body, support and fastening components, and the ring body is hollow tube structure, and leaves a breach on the ring body, and the elongated slot has been seted up to the inboard of ring body, and the ring body is equipped with a plurality of wash ports, and the both ends of support are connected in the lateral wall of ring body, and the support is outside protrusion form setting for the ring body, and fastening components installs in the support, forms hollow holding portion between fastening components and the support. Therefore, the ring body adopts a hollow tube structure and is grooved, so that the weight of the product can be reduced; the inner side of the ring body is provided with the groove and the drain hole, so that later cleaning can be facilitated, and the performance is not affected by accumulated water caused by water seepage.

In some embodiments, the fastening assembly includes a U-bolt and a nut, the bracket is provided with two through holes, two ends of the U-bolt pass through the through holes and are fixed by the nut, and a hollow part formed between the U-bolt and the bracket is a holding part. From this, treat that voltage-sharing shielded object pastes and leans on in the support surface, then the through-hole and the screw locking of support are passed at the both ends of U type bolt for treat that voltage-sharing shielded object is fixed in the holding portion that forms between U type bolt and the support in, this kind of mounting means is simple, and the holding portion does not adopt conventional annular staple bolt structure, can prevent to rotate or not hard up, fixed firm safety.

In some embodiments, both ends of the U-bolt are sleeved with threaded protective sleeves. Therefore, under various natural environments, the threads are not easy to corrode and deform, and later maintenance and replacement are facilitated.

In some embodiments, the ring and the bracket are made of aluminum, and the ring and the bracket are integrally formed. From this, hollow aluminum product ring body light in weight, ring body and support adopt aluminum product integral type casting to form, have reduced welded step, have avoided the defect that the welding brought simultaneously, have improved production efficiency and yields.

In some embodiments, the main body portion of the stent is flat, and a V-shaped groove is formed between the two through holes. Therefore, the straight bracket is convenient for positioning and fixing the object to be voltage-sharing shielded; the outer surface of the object to be voltage-sharing shielded can be trapped in the V-shaped groove, so that the relative ring body of the object to be voltage-sharing shielded can be further prevented from rotating.

In some embodiments, the drainage holes are provided in three locations, one at each end and one at the middle of the ring body. Therefore, the drain holes are reasonably distributed, and water in the ring body can be drained through the drain holes in time in rainy days.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses simple structure, ring body and support adopt aluminum product integral type casting shaping, and the ring body is hollow and the design of slotting, and whole light in weight conveniently treats voltage-sharing shielded object through V type groove on U type bolt and the support and fixes a position and fix, and the wash port is added in the ring body fluting, and the clearance in the later stage of being convenient for can not ooze water and lead to inside ponding and influence the performance.

Drawings

Fig. 1 is a schematic structural view of an embodiment of a grading shield ring according to the present invention;

FIG. 2 is a schematic top view of the structure of FIG. 1;

FIG. 3 is a schematic view of the exploded structure of FIG. 1;

FIG. 4 is a schematic view of the overall construction of the ring and the stent;

FIG. 5 is a schematic view of a threaded protective sleeve;

fig. 6 is a schematic structural view of the U-bolt.

Detailed Description

The present invention will be further described with reference to the following embodiments.

As shown in fig. 1 and 3, an embodiment of the present invention relates to a grading and shielding ring, which includes a ring body 1, a bracket 2, and a fastening assembly 3. As shown in fig. 4, the ring body 1 is a hollow tube structure, and a gap 4 is left on the ring body 1, and both ends of the ring body 1 are arc spherical structures. An elongated slot 11 is arranged at the central position of the inner side wall of the ring body 1, and a plurality of water discharge holes 12 are arranged on the ring body 1. The main body of the bracket 2 is flat, the two ends of the bracket 2 are connected to the side walls of the ring body 1, and the center of the bracket 2 is arranged in a convex shape relative to the edge of the ring body 1 (as shown in fig. 2). The fastening assembly 3 is mounted on the bracket 2, and a hollow accommodating part 5 is formed between the fastening assembly 3 and the bracket 2. The ring body 1 adopts a hollow tube structure and a slotted design, so that the weight of the product can be reduced. The inner side of the ring body 1 is provided with a groove and a drain hole 12, so that later cleaning can be facilitated, and the performance is not affected by accumulated water caused by water seepage.

As shown in fig. 3 and 6, the fastening assembly 3 includes a U-bolt 31 and a nut 32. The bracket 2 is provided with two through holes 21, two ends of the U-shaped bolt 31 penetrate through the through holes 21 and are fixed by nuts 32, and a hollow part formed between the U-shaped bolt 31 and the bracket 2 is a containing part 5. The support 2 that is straight form is convenient for treat voltage-sharing shielded object location and fixed, treats that voltage-sharing shielded object pastes and leans on in support 2 surface, then the through-hole 21 and the nut locking of support 2 are passed at the both ends of U type bolt 31 for treat that voltage-sharing shielded object is fixed in the holding portion 5 that forms between U type bolt 31 and the support 2 in, this kind of mounting means is simple, holding portion 5 does not adopt conventional annular staple bolt structure, can prevent to rotate or not hard up, fixed firm safety.

As shown in fig. 3 and 5, both ends of the U-bolt 31 are sleeved with threaded protection sleeves 33. Under various natural environments, the threads are not easy to corrode and deform, and later maintenance and replacement are facilitated.

The ring body 1 and the bracket 2 are made of aluminum materials, and the ring body 1 and the bracket 2 are integrally formed. Hollow aluminum product ring body 1 is light in weight, and ring body 1 and support 2 adopt aluminum product integral type casting shaping, have reduced the welded step, have avoided the defect that the welding brought simultaneously, have improved production efficiency and yields.

A V-shaped groove 22 is arranged between the two through holes 21 on the bracket 2. The outer surface of the object to be voltage-sharing shielded can be trapped in the V-shaped groove 22, so that the object to be voltage-sharing shielded can be further prevented from rotating relative to the ring body 1.

In this embodiment, the drain holes 12 are provided at three positions, respectively located at two end portions and a middle portion of the ring body 1. The drainage holes 12 are reasonably distributed, and water in the ring body 1 can be drained through the drainage holes 12 in time in rainy days.

The utility model discloses simple structure, ring body 1 and support 2 adopt aluminum product integral type casting shaping, and ring body 1 is hollow and the design of slotting, and whole light in weight conveniently locates and fixes the object of voltage-sharing shielding through V type groove 22 on U type bolt 31 and the support 2, and ring body 1 fluting adds establishes wash port 12, and the clearance in the later stage of being convenient for can not seep water and lead to inside ponding and influence the performance.

The foregoing is only a few embodiments of the present invention, and it should be noted that, for those skilled in the art, other modifications and improvements can be made without departing from the inventive concept of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. The utility model provides a voltage-sharing shield ring, includes ring body (1), support (2) and fastening components (3), its characterized in that, ring body (1) is the hollow tube structure, just leave a breach (4) on ring body (1), elongated slot (11) have been seted up to the inboard of ring body (1), ring body (1) is equipped with a plurality of wash ports (12), the both ends of support (2) are connected in the lateral wall of ring body (1), support (2) are outside protrusion form setting for ring body (1), fastening components (3) are installed in support (2), form hollow holding portion (5) between fastening components (3) and support (2).

2. A grading shield according to claim 1, characterized in that the fastening assembly (3) comprises a U-bolt (31) and a nut (32), the bracket (2) is provided with two through holes (21), the two ends of the U-bolt (31) are passed through the through holes (21) and fixed by the nut (32), and the hollow part formed between the U-bolt (31) and the bracket (2) is the accommodating part (5).

3. A grading shield according to claim 2, characterized in that both ends of the U-bolt (31) are sleeved with a threaded protective sleeve (33).

4. A grading and shielding ring according to claim 3, characterized in that the ring body (1) and the bracket (2) are made of aluminum material and the ring body (1) and the bracket (2) are formed integrally.

5. A grading and shielding ring according to claim 4, characterized in that the body part of the bracket (2) is straight and a V-shaped groove (22) is provided between the two through holes (21).

6. A grading and shielding ring according to claim 5, characterized in that said drain holes (12) are provided in three places, respectively at the two ends and in the middle of the ring body (1).