UHV power transmission line lightning arrester installation device

Abstract

The utility model provides an ultra-high voltage power transmission line lightning arrester installation device. One end of an installation support is fixed on a power transmission line tower; the fixing assembly comprises a pillar composite insulator part and an insulating inhaul cable part, one end of the pillar composite insulator part is fixedly connected with the other end of the mounting bracket, the other end of the pillar composite insulator part is fixedly connected with one end of the insulating inhaul cable part, and the other end of the insulating inhaul cable part is fixedly connected with the lightning arrester; wherein the pillar composite insulator part and the lightning arrester are distributed in parallel in the vertical direction, and an included angle is formed between the insulation inhaul cable part and the pillar composite insulator part. According to the utility model, a solution is provided for the reliable installation of the ultra-high voltage transmission line lightning arrester with an ultra-long structural size on a tower, the effective height of the lightning arrester structure is reduced, and the stability of the lightning arrester under the action of strong wind when the lightning arrester runs in the air is enhanced.

Description

Technical Field

[0001] The utility model belongs to the field of lightning arresters, and particularly relates to an installation device for a UHV transmission line lightning arrester. Background Art

[0002] UHV transmission lines are the main force for long-distance power transmission. Currently, the world's highest voltage level 1000 kV AC and ±1100 kV DC transmission projects are in commercial operation, and the ±800 kV DC transmission technology has also been exported to Brazil. Lightning arresters are key devices to protect the line from lightning overvoltage flashover. However, due to the high voltage level and high tower height of UHV transmission lines, the required lightning arrester has a large structural size, with a length of nearly 10 m. How to reliably install a UHV lightning arrester with a long structural size on a tower above 50 m is a problem to be solved currently.

[0003] Currently, the lightning arrester is usually fixed by means of stay insulators. However, the UHV line lightning arrester has a large structural size, and the required length of the stay insulator is also large, so that the stay insulator is bent under the action of its own gravity in the natural state, resulting in a limited binding effect on the attitude of the lightning arrester, and a large amplitude of the lightning arrester under the action of wind deflection, which is prone to fatigue damage.

[0004] Therefore, how to propose an installation device for a UHV transmission line lightning arrester to stably install the UHV line lightning arrester on a higher tower and further ensure the safe and reliable operation of the lightning arrester is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an installation device for a UHV transmission line lightning arrester to solve at least one of the above technical problems.

[0006] To solve the above technical problem, the utility model provides an installation device for a UHV transmission line lightning arrester for installing the lightning arrester, including: an installation bracket, one end of the installation bracket is fixed on a transmission line tower; a fixing component, the fixing component includes a pillar composite insulator component and an insulating cable component, one end of the pillar composite insulator component is fixedly connected with the other end of the installation bracket, the other end is fixedly connected with one end of the insulating cable component, and the other end of the insulating cable component is fixedly connected with the lightning arrester; wherein, the pillar composite insulator component and the lightning arrester are distributed in parallel in the vertical direction, and an included angle is formed between the insulating cable component and the pillar composite insulator component.

[0007] Optionally, the post composite insulator component includes: a first post composite insulator, one end of the first post composite insulator is fixedly connected to the middle of the mounting bracket; a second post composite insulator, one end of the second post composite insulator is fixedly connected to the bottom of the mounting bracket; a third post composite insulator, one end of the third post composite insulator is fixedly connected to the top of the mounting bracket; wherein, the first post composite insulator, the second post composite insulator and the third post composite insulator are respectively parallel to the arrester in the vertical direction.

[0008] Optionally, the insulating cable component includes: a first insulating cable, one end of the first insulating cable is fixedly connected to the other end of the first post composite insulator to form a first angle, and the other end of the first insulating cable is fixedly connected to the first fixing part of the arrester; a second insulating cable, one end of the second insulating cable is fixedly connected to the other end of the second post composite insulator to form a second angle, and the other end of the second insulating cable is fixedly connected to the second fixing part of the arrester; a third insulating cable, one end of the third insulating cable is fixedly connected to the other end of the third post composite insulator to form a third angle, and the other end of the third insulating cable is fixedly connected to the third fixing part of the arrester.

[0009] Optionally, the first fixing part, the second fixing part and the third fixing part are the same part of the arrester.

[0010] Optionally, the length from the first fixing part, the second fixing part or the third fixing part to the top end of the arrester is H, and the length from the first fixing part, the second fixing part or the third fixing part to the bottom end of the arrester is h, and the H is 1-2 times of the h.

[0011] Optionally, the included angle range between the first insulating cable and the arrester is 30°-60°; and / or, the included angle range between the second insulating cable and the arrester is 30°-60°; and / or, the included angle range between the third insulating cable and the arrester is 30°-60°.

[0012] Optionally, the height of the first post composite insulator is 20%-40% of the height of the arrester;

[0013] and / or, the height of the second post composite insulator is 20%-40% of the height of the arrester; and / or, the height of the third post composite insulator is 20%-40% of the height of the arrester.

[0014] Optionally, the opening width of one end of the mounting bracket is greater than the opening width of the other end of the mounting bracket.

[0015] Beneficial effects: The present utility model provides an installation device for a UHV transmission line lightning arrester, which is used for the installation of the lightning arrester and includes: an installation bracket, one end of the installation bracket is fixed on the transmission line tower, so that the installation bracket can be fixed on the transmission line tower. The fixing component includes a post composite insulator component and an insulating cable component. One end of the post composite insulator component is fixedly connected to the other end of the installation bracket, and the other end is fixedly connected to one end of the insulating cable component, so that the post composite insulator can be fixed on the installation bracket. The other end of the insulating cable component is fixedly connected to the lightning arrester, so that the insulating cable component can be fixed between the post composite insulator and the lightning arrester; wherein, the post composite insulator component and the lightning arrester are distributed in parallel in the vertical direction, and an included angle is formed between the insulating cable component and the post composite insulator component, so that the vertical setting of the post composite insulator can avoid the post composite insulator from bending under the action of gravity, and the combined use of the insulating cable and the post composite insulator increases the flexibility of the overall installation structure while further reducing the effective height of the lightning arrester structure.

[0016] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following specifically describes the embodiments of the present utility model. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the installation device for the UHV transmission line lightning arrester.

[0019] Reference numerals: 1, installation bracket; 2, first post composite insulator; 3, second post composite insulator; 4, third post composite insulator; 5, first insulating cable; 6, second insulating cable; 7, third insulating cable; 8, lightning arrester. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" shall be understood in a broad sense. For example, it can be a connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0023] Please refer to Figure 1 , the present invention provides a lightning arrester installation device for a UHV transmission line, which is used for the installation of a lightning arrester and includes: an installation bracket 1, one end of the installation bracket 1 is fixed on a transmission line tower; a fixing component, the fixing component includes a pillar composite insulator component and an insulating cable component, one end of the pillar composite insulator component is fixedly connected to the other end of the installation bracket 1, and the other end is fixedly connected to one end of the insulating cable component, and the other end of the insulating cable component is fixedly connected to the lightning arrester; wherein, the pillar composite insulator component and the lightning arrester are parallelly distributed in the vertical direction, and an included angle is formed between the insulating cable component and the pillar composite insulator component.

[0024] Specifically, for the arrester installation device of the UHV transmission line provided by the present utility model, one end of the installation bracket 1 is fixed to the transmission line tower, so that the installation bracket 1 can be fixed on the transmission line tower. At the same time, one end of the post composite insulator component is fixedly connected to the other end of the installation bracket 1, and the other end of the post composite insulator component is fixedly connected to one end of the insulating cable component, so that the post composite insulator can be fixed on the installation bracket. The other end of the insulating cable component is fixedly connected to the arrester, so that the insulating cable component can be fixed between the post composite insulator and the arrester; wherein, the post composite insulator component and the arrester are parallelly distributed in the vertical direction, and an included angle is formed between the insulating cable component and the post composite insulator component. The vertical arrangement of the post composite insulator can prevent the post composite insulator from bending under the action of gravity. The combined use of the insulating cable and the post composite insulator increases the flexibility of the overall installation structure while further reducing the effective height of the arrester structure.

[0025] As a feasible implementation manner, the post composite insulator component includes: a first post composite insulator 2, one end of the first post composite insulator 2 is fixedly connected to the middle of the installation bracket; a second post composite insulator 3, one end of the second post composite insulator 3 is fixedly connected to the bottom of the installation bracket 1; a third post composite insulator 4, one end of the third post composite insulator 4 is fixedly connected to the top of the installation bracket 1; wherein, the first post composite insulator 2, the second post composite insulator 3 and the third post composite insulator 4 are respectively parallelly distributed with the arrester in the vertical direction.

[0026] Specifically, the post insulators fix the arrester from different directions, so that the arrester can be fixed on the installation bracket. The first post composite insulator, the second post composite insulator and the third post composite insulator are respectively fixed to the middle, bottom and top of the installation bracket, so that the three posts can fix the arrester in different states comprehensively and make full use of the installation bracket.

[0027] As a feasible implementation manner, the insulating cable component includes: a first insulating cable 5, one end of the first insulating cable 5 is fixedly connected to the other end of the first post composite insulator 2 to form a first included angle, and the other end of the first insulating cable 5 is fixedly connected to the first fixing portion of the arrester 8; a second insulating cable 6, one end of the second insulating cable 6 is fixedly connected to the other end of the second post composite insulator 3 to form a second included angle, and the other end of the second insulating cable 6 is fixedly connected to the second fixing portion of the arrester 8; a third insulating cable 7, one end of the third insulating cable 7 is fixedly connected to the other end of the third post composite insulator 4 to form a third included angle, and the other end of the third insulating cable 7 is fixedly connected to the third fixing portion of the arrester 8.

[0028] Specifically, by utilizing the flexibility of the insulating cable, the post composite insulator and the arrester are connected together. An included angle is formed between the insulating cable and the arrester, and the three formed included angles are used to fix the arrester in all directions.

[0029] As a feasible implementation manner, the first fixing portion, the second fixing portion, and the third fixing portion are the same part of the arrester 8.

[0030] Specifically, the three fixing portions being the same part of the arrester enables the fixing force of the insulating cable on the arrester to be concentrated at one point, ensuring that the arrester is fixed on the mounting bracket.

[0031] As a feasible implementation manner, the length from the first fixing portion, the second fixing portion, or the third fixing portion to the top end of the arrester 8 is H, and the length from the first fixing portion, the second fixing portion, or the third fixing portion to the bottom end of the arrester is h, and H is 1 - 2 times of h.

[0032] Specifically, the length from the first fixing portion, the second fixing portion, or the third fixing portion to the top end of the arrester is greater than the length from the first fixing portion, the second fixing portion, or the third fixing portion to the bottom end of the arrester, so that the length of the post composite insulator can be limited, and the length of the post composite insulator is 20% - 40% of the height of the arrester.

[0033] As a feasible implementation manner, the included angle range between the first insulating cable 5 and the arrester 8 is 30° - 60°; and / or, the included angle range between the second insulating cable 6 and the arrester 8 is 30° - 60°; and / or, the included angle range between the third insulating cable 7 and the arrester 8 is 30° - 60°.

[0034] Specifically, determining the included angle range as 30° - 60° can enable the combined downward force of the three insulating cables to stably fix the arrester.

[0035] As a feasible implementation manner, the height of the first pillar composite insulator 2 is 20%-40% of the height of the lightning arrester 8; and / or, the height of the second pillar composite insulator 3 is 20%-40% of the height of the lightning arrester 8; and / or, the height of the third pillar composite insulator 4 is 20%-40% of the height of the lightning arrester 8.

[0036] Specifically, the length of the pillar composite insulator is controlled to make the pillar composite insulator more stable. Because if the length of the pillar composite insulator is too long, it is inevitable to fix the pillar composite insulator. However, the design of this application makes the length of the pillar composite insulator appropriate, which can not only fix the lightning arrester, but also make the pillar composite insulator exist stably. At the same time, equally importantly, the length of the pillar composite insulator cannot be less than 20%, otherwise a relatively long insulating cable will be required. And the too long insulating cable will bend under its own gravity, so a large tension force is required to keep it in a taut state during installation. Therefore, the length of the pillar composite insulator should be specifically limited according to the actual situation to avoid bending of the pillar composite insulator and the insulating cable.

[0037] As a feasible implementation manner, the opening width of one end of the mounting bracket 1 is greater than the opening width of the other end of the mounting bracket 1.

[0038] Specifically, the opening width of one end of the mounting bracket being greater than the opening width of the other end of the mounting bracket reduces the weight of the mounting bracket to improve the stability of the mounting bracket.

[0039] In summary, a lightning arrester installation device for a UHV transmission line provided by an embodiment of the present utility model has the following beneficial effects:

[0040] 1. It provides a solution for the reliable installation of a UHV transmission line lightning arrester with ultra-long structural dimensions on a pole tower. The insulating cable has better flexibility and a shorter length, avoiding the bending of the too long insulating cable under its own gravity. At the same time, a pillar composite insulator with an appropriate length is selected, which also avoids the bending of the too long pillar composite insulator under its own gravity.

[0041] 2. The combined use of the insulating cable and the pillar composite insulator increases the flexibility of the overall installation structure while further reducing the effective height of the lightning arrester structure, enhancing the stability of the lightning arrester under the action of strong winds during high-altitude operation, and making it easier to resist the influence of the bending moment caused by strong winds. It is suitable for the installation of UHV transmission line lightning arresters in areas with strong winds such as coastal areas and micro-topographies.

[0042] Finally, it should be noted that the above embodiments are only specific embodiments of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present invention can still modify the technical solutions described in the foregoing embodiments or easily conceive of changes, or make equivalent replacements for some of the technical features; and these modifications, changes or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

[0043] Although the embodiments of the present invention have been disclosed as above, it is not limited to only the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to specific details and the examples shown and described herein.

Claims

1. A device for installing a lightning arrester on an extra-high voltage transmission line, which is used for installing the lightning arrester, and is characterized in that, Comprising: An installation bracket, one end of the installation bracket is fixed to a transmission line tower; A fixing assembly, the fixing assembly includes a post composite insulator component and an insulating cable component, one end of the post composite insulator component is fixedly connected to the other end of the installation bracket, and the other end is fixedly connected to one end of the insulating cable component, and the other end of the insulating cable component is fixedly connected to the arrester; Wherein, the post composite insulator component and the arrester are parallelly distributed in the vertical direction, and an included angle is formed between the insulating cable component and the post composite insulator component.

2. The installation device for the UHV transmission line lightning arrester according to claim 1, characterized in that The post composite insulator component includes: A first post composite insulator, one end of the first post composite insulator is fixedly connected to the middle of the installation bracket; A second post composite insulator, one end of the second post composite insulator is fixedly connected to the bottom of the installation bracket; A third post composite insulator, one end of the third post composite insulator is fixedly connected to the top of the installation bracket; Wherein, the first post composite insulator, the second post composite insulator and the third post composite insulator are respectively parallelly distributed with the arrester in the vertical direction.

3. The lightning arrester installation device for UHV transmission lines according to claim 2, characterized in that, The insulating cable component includes: A first insulating cable, one end of the first insulating cable is fixedly connected to the other end of the first post composite insulator to form a first included angle, and the other end of the first insulating cable is fixedly connected to a first fixing part of the arrester; A second insulating cable, one end of the second insulating cable is fixedly connected to the other end of the second post composite insulator to form a second included angle, and the other end of the second insulating cable is fixedly connected to a second fixing part of the arrester; A third insulating cable, one end of the third insulating cable is fixedly connected to the other end of the third post composite insulator to form a third included angle, and the other end of the third insulating cable is fixedly connected to a third fixing part of the arrester.

4. The UHV transmission line arrester installation device according to claim 3, characterized in that: The first fixing part, the second fixing part and the third fixing part are the same part of the arrester.

5. The UHV transmission line arrester installation device according to claim 4, characterized in that: The length from the first fixing part, the second fixing part or the third fixing part to the top end of the arrester is H, and the length from the first fixing part, the second fixing part or the third fixing part to the bottom end of the arrester is h, and the H is 1-2 times of the h.

6. The UHV transmission line arrester installation device according to claim 5, characterized in that: The included angle range between the first insulating cable and the arrester is 30° - 60°; And / or, The included angle range between the second insulating cable and the arrester is 30° - 60°; And / or, The included angle range between the third insulating cable and the arrester is 30° - 60°.

7. The installation device for the UHV transmission line lightning arrester according to claim 5, characterized in that: The height of the first post composite insulator is 20% - 40% of the height of the arrester; And / or, The height of the second post composite insulator is 20%-40% of the height of the arrester; and / or, The height of the third post composite insulator is 20%-40% of the height of the arrester.

8. The lightning arrester installation device for extra-high voltage transmission lines according to claim 5, characterized in that: The opening width at one end of the mounting bracket is greater than the opening width at the other end of the mounting bracket.

Images