High-voltage power grid grading ring

Abstract

The utility model relates to a high-voltage power grid grading ring comprising a grading ring body (10) which is installed on the end portion of an insulator string (11) through a connecting assembly (20), and the connecting assembly (20) comprises a plurality of supporting rods (21). The connecting ring (22) is sleeved outside the circular buckle (23), the circular buckle (23) is fixed at the end part of the insulator string (11), locking rings (25) are clamped between the connecting ring (22) and the circular buckle (23) through a clamping pin (24), and the two locking rings (25) are oppositely arranged up and down; the connecting ring (22) is sleeved outside the circular buckle (23) from the end part of the insulator chain (11), then the upper and lower locking rings (25) are clamped in, and the locking rings (25) are locked through the bayonet locks (24), so that the grading ring body (10) is quickly and stably mounted at the end part of the insulator chain (11) without adopting a hoop type locking structure, the mounting process is simple, and the mounting efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage grading rings, in particular to a voltage grading ring for a high-voltage power grid. Background Art

[0002] Overhead transmission lines are important channels for electric energy transmission and an important part of the power grid. The reliability of the operation of transmission lines is directly related to the safety of the power grid. According to relevant national regulations, 110kV AC transmission lines should be installed with equalizing rings on the high-voltage side, and 220kV and 330kV transmission lines should be installed with equalizing rings on both sides. The main functions of installing equalizing rings on insulators are: equalizing the voltage inside the insulator; shielding the electric field on the surface of the insulator; drawing off the power frequency arc; and weakening the local corona at the end. The equalizing ring is generally an integrally formed circular ring structure. This circular ring-shaped equalizing ring needs to be mounted on the high-voltage end or low-voltage end of the insulator string in the vertical direction. The Chinese utility model patent with the authorization announcement number CN219321116U discloses an open-type insulation-coated equalizing ring, which adopts a clamp-type locking structure during installation, resulting in a complicated installation process and low installation efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing pressure equalizing ring adopts a clamp-type locking structure during installation, which leads to a complicated installation process and low installation efficiency.

[0004] In order to solve the above problems, the utility model provides a high-voltage power grid grading ring, including a grading ring body, which is installed at the end of an insulator string through a connecting assembly. The connecting assembly includes multiple support rods, and the two ends of the support rods are respectively fixed to the grading ring body and a connecting ring. The connecting ring is sleeved outside a circular buckle, and the circular buckle is fixed to the end of the insulator string. A locking ring is clamped between the connecting ring and the circular buckle through a bayonet pin, and two locking rings are arranged opposite to each other up and down.

[0005] The high-voltage grid grading ring provided by the utility model also has the following technical features:

[0006] The upper and lower edges of the circular buckle are both chamfered, and the inner circumferential surface of the locking ring is provided with an annular concave surface, which includes a horizontal section and an inclined section. The horizontal section can contact the end face of the circular buckle, and the inclined section can contact the chamfered surface of the circular buckle.

[0007] The plurality of bayonet pins are arranged to slide radially along the connecting ring, a tension spring is installed between one end of the bayonet pin and the outer surface of the connecting ring, and the other end of the bayonet pin can be inserted into a groove, which is opened on the outer surface of the locking ring and arranged radially thereof.

[0008] The connecting ring is provided with a plurality of guide holes, in which bayonet pins are slidably installed.

[0009] One end of the bayonet is fixed to one side of the baffle, a tension spring is installed between one side of the baffle and the outer surface of the connecting ring, and a pull ring is fixed to the other side of the baffle.

[0010] A plurality of vertical rods are fixed on the outer surface of the locking ring. The vertical rods slide along the vertical grooves, and the vertical grooves are correspondingly arranged on the inner surface of the connecting ring.

[0011] The main body of the pressure equalizing ring is an open cavity structure, and the opening is separated by insulating material.

[0012] The utility model has the following beneficial effects: the connecting ring is inserted into the circular buckle from the end of the insulator string, and then the upper and lower locking rings are inserted, and the locking rings are locked by the bayonet pins, so that the voltage-equalizing ring body can be quickly and firmly installed on the end of the insulator string, without the need to adopt a clamp-type locking structure, the installation process is simple, and the installation efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an axonometric drawing of the utility model;

[0014] Figure 2 for Figure 1 A partial enlarged view of

[0015] Figure 3 for Figure 2 Exploded diagram of the structure. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0017] like Figures 1 to 3 As shown, the utility model high-voltage grid grading ring includes a grading ring body 10, which is installed at the end of the insulator string 11 through a connecting assembly 20. The connecting assembly 20 includes a plurality of support rods 21. The two ends of the support rods 21 are respectively fixed to the grading ring body 10 and a connecting ring 22. The connecting ring 22 is sleeved outside a circular buckle 23, and the circular buckle 23 is fixed to the end of the insulator string 11. A locking ring 25 is clamped between the connecting ring 22 and the circular buckle 23 through a bayonet 24, and two locking rings 25 are arranged opposite to each other up and down.

[0018] The utility model inserts the connecting ring 22 from the end of the insulator string 11 onto the outside of the circular buckle 23, then inserts the upper and lower locking rings 25, and locks the locking rings 25 by means of the bayonet pin 24, so as to quickly and firmly install the voltage-equalizing ring body 10 on the end of the insulator string 11, without adopting a clamp-type locking structure, and the installation process is simple and the installation efficiency is high.

[0019] Preferably, the upper and lower edges of the circular buckle 23 are both chamfered, and the inner circumferential surface of the locking ring 25 is provided with an annular concave surface 31, the annular concave surface 31 includes a horizontal section 32 and an inclined section 33, the horizontal section 32 can contact the end face of the circular buckle 23, and the inclined section 33 can contact the chamfered surface of the circular buckle 23.

[0020] The horizontal section 32 of the locking ring 25 of the utility model contacts the end surface of the circular buckle 23 to limit the vertical movement of the equalizing ring body 10, and the inclined section 33 contacts the chamfered surface of the circular buckle 23 to ensure that the equalizing ring body 10 is firmly installed at the end of the insulator string 11 to avoid shaking.

[0021] Preferably, the plurality of the bayonet pins 24 are arranged to slide radially along the connecting ring 22, a tension spring 34 is installed between one end of the bayonet pin 24 and the outer surface of the connecting ring 22, and the other end of the bayonet pin 24 can be inserted into a groove 35, which is opened on the outer surface of the locking ring 25 and arranged radially thereof.

[0022] Among them, those skilled in the art can change the elastic parameters of the tension spring 34 so that when the tension spring 34 is in a free state, the other end of the latch 24 does not contact the outer surface of the circular buckle 23 .

[0023] Preferably, a plurality of guide holes 36 are formed on the connecting ring 22 , and the bayonet pins 24 are slidably installed in the guide holes 36 .

[0024] Preferably, one end of the latch 24 is fixed to one side of the baffle 37 , a tension spring 34 is installed between one side of the baffle 37 and the outer surface of the connecting ring 22 , and a pull ring 38 is fixed to the other side of the baffle 37 .

[0025] Preferably, a plurality of vertical rods 41 are fixed to the outer surface of the locking ring 25 , and the vertical rods 41 slide along vertical grooves 42 , and the vertical grooves 42 are correspondingly opened on the inner surface of the connecting ring 22 .

[0026] The utility model provides matched vertical rods 41 and vertical slots 42 to facilitate the locking ring 25 to be clamped between the connecting ring 22 and the circular buckle 23 .

[0027] Preferably, the equalizing ring body 10 is an open cavity structure, and the opening is separated by insulating material.

[0028] The working principle of the utility model is as follows:

[0029] The connecting ring 22 is put on the circular buckle 23 from the end of the insulator string 11, and the pull ring 38 is pulled to overcome the elastic force of the tension spring 34, so that the pin 24 slides outward along the guide hole 36; the vertical rod 41 on the locking ring 25 is aligned with the vertical groove 42 on the connecting ring 22, and the upper and lower locking rings 25 are inserted between the connecting ring 22 and the circular buckle 23, so that the horizontal section 32 of the locking ring 25 contacts the end surface of the circular buckle 23 to limit the movement of the equalizing ring body 10 in the vertical direction, and the inclined section 33 contacts the chamfered surface of the circular buckle 23, so that the equalizing ring body 10 is firmly installed at the end of the insulator string 11 to avoid shaking, and the pull ring 38 is loosened, so that the other end of the pin 24 is inserted into the corresponding groove 35 on the outer circumferential surface of the locking ring 25 to lock the locking ring 25, so as to quickly and firmly install the equalizing ring body 10 at the end of the insulator string 11, without the need to adopt a clamp-type locking structure, the installation process is simple, and the installation efficiency is high.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A high-voltage power grid grading ring, comprising a grading ring body (10), which is installed at the end of an insulator string (11) through a connecting assembly (20), characterized in that: The connection assembly (20) comprises a plurality of support rods (21), the two ends of the support rods (21) being fixed to the equalizing ring body (10) and the connection ring (22) respectively, the connection ring (22) being sleeved outside the circular buckle (23), the circular buckle (23) being fixed to the end of the insulator string (11), a locking ring (25) being clamped between the connection ring (22) and the circular buckle (23) via a bayonet (24), and two locking rings (25) being arranged opposite to each other in the upper and lower parts.

2. The high voltage grid grading ring according to claim 1, characterized in that: The upper and lower edges of the circular buckle (23) are both chamfered, and the inner circumferential surface of the lock ring (25) is provided with an annular concave surface (31). The annular concave surface (31) includes a horizontal section (32) and an inclined section (33). The horizontal section (32) can contact the end surface of the circular buckle (23), and the inclined section (33) can contact the chamfered surface of the circular buckle (23).

3. The high voltage grid grading ring according to claim 1, characterized in that: A plurality of the bayonet pins (24) are slidably arranged along the radial direction of the connecting ring (22); a tension spring (34) is installed between one end of the bayonet pin (24) and the outer surface of the connecting ring (22); the other end of the bayonet pin (24) can be inserted into a groove (35); the groove (35) is formed on the outer surface of the locking ring (25) and arranged along the radial direction thereof.

4. The high voltage grid grading ring according to claim 3, characterized in that: The connecting ring (22) is provided with a plurality of guide holes (36), and a bayonet pin (24) is slidably mounted in the guide hole (36).

5. The high voltage grid grading ring according to claim 3, characterized in that: One end of the latch (24) is fixed to one side of a baffle (37), a tension spring (34) is installed between one side of the baffle (37) and the outer surface of the connecting ring (22), and a pull ring (38) is fixed to the other side of the baffle (37).

6. The high voltage grid grading ring according to claim 1, characterized in that: A plurality of vertical rods (41) are fixed to the outer surface of the locking ring (25), and the vertical rods (41) slide along vertical grooves (42). The vertical grooves (42) are correspondingly formed on the inner surface of the connecting ring (22).

7. The high voltage grid grading ring according to claim 1, characterized in that: The equalizing ring body (10) is an open cavity structure, and the opening is separated by insulating material.

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