Lightning protection voltage limiter protection sleeve
By designing a multi-layer structure lightning pressure limiter protective sleeve, the problem of lightning pressure limiter bridge phenomenon and insufficient sealing in ice and snow environments is solved, and higher protection effect and equipment stability are achieved, and equipment life is extended. And reduce maintenance costs.
Patent Information
- Application Number
- CN202421139852.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing lightning-proof pressure limiter sheath cannot effectively prevent bridging in ice and snow environments, resulting in short circuits, overheating, degradation of performance, reduced risk of electric shock and reduced protection performance, and poor sealing, which can easily lead to moisture.
A multi-layer structure lightning pressure limiter protective cover is designed, including sealed moisture-proof sheath and snow-proof sheath. The outer sheath is designed with a large umbrella skirt and a small umbrella skirt to expand the coverage, and the inner sheath is sealed moisture-proof sheath. The sleeve ensures sealing and moisture resistance through a clasp structure and multimolecular silicone rubber material.
Effectively prevent the bridging risk of lightning protection and voltage limiter in ice and snow environments, improve sealing performance, reduce physical and chemical erosion of ice and snow on the equipment, extend the service life of the equipment, reduce maintenance costs, and increase the transmission line stability.
Smart Images
Figure CN222508791U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lightning protection voltage limiters, in particular to a protective sleeve of a lightning protection voltage limiter. Background Art
[0002] Lightning is an important factor that troubles power transmission, causing line tripping and flashover. Especially with the progress of industrialization, the atmospheric environment has deteriorated and lightning phenomena have become increasingly frequent. According to incomplete statistics, the number of casualties caused by lightning disasters in my country reaches more than 1,000 and the property loss exceeds 100 million yuan each year. Lightning disasters have been listed as "one of the ten most serious natural disasters" by relevant departments of the United Nations and are called "a major public hazard in the electronic age" by the China Electrotechnical Commission.
[0003] Lightning disasters have an increasing impact on the reliability and sustainability of power supply. At the same time, economic development is increasingly dependent on electricity. The reliability and sustainability of transmission lines have become one of the important projects in the safety work of the power supply department. Installing lightning protection voltage limiters on transmission lines can effectively ensure the safety of the lines. Lightning protection voltage limiters, also known as surge protectors or lightning arresters, are an indispensable part of the power system.
[0004] The existing lightning arrester voltage limiter sheath cannot effectively ensure the normal operation of the lightning arrester voltage limiter. In an ice and snow environment, the lightning arrester voltage limiter may be bridged, that is, ice and snow form a conductive path between the two electrodes of the voltage limiter. This bridging phenomenon may cause short circuit risks, overheating risks, performance degradation, electric shock risks, and change the electrical characteristics of the lightning arrester voltage limiter, reducing the protection performance. In addition, the sealing of the existing lightning arrester voltage limiter sheath is still poor, which can easily cause the lightning arrester voltage limiter to get damp. Utility Model Content
[0005] The utility model aims to provide a lightning arrester voltage limiter protective cover to solve the technical problem of how to avoid the risk of bridging of the lightning arrester voltage limiter and improve the sealing performance of the lightning arrester voltage limiter, thereby improving the stability of the power transmission line.
[0006] The utility model is implemented by adopting the following technical scheme: a lightning arrester voltage limiter protective cover, comprising an upper cover and a lower cover, wherein the upper cover and the lower cover are both sleeved on the outer side of a valve core, wherein the upper cover is a multi-layer structure, comprising a sealing moisture-proof cover and an anti-ice and snow cover, the lower cover is a valve core outer cover, the anti-ice and snow cover is connected to the valve core outer cover, the anti-ice and snow cover is sleeved on the outer side of the sealing moisture-proof cover, and a plurality of particles for increasing adhesion are arranged on the sealing moisture-proof cover.
[0007] Furthermore, an upper mounting piece is provided at the uppermost end of the valve core, and a wire pressing plate is provided on the upper mounting piece; a lower mounting piece is provided at the lowermost end of the valve core, and a power frequency cutter is provided on the lower mounting piece.
[0008] Furthermore, a plurality of valve plates are sleeved on the outer side of the upper portion of the valve core, and the valve plates form a valve body. An upper pole plate is arranged at the uppermost end of the valve body, and a lower pole plate is arranged at the lowermost end of the valve body.
[0009] Furthermore, the sealing moisture-proof sheath is composed of two semicircular tube bodies, each semicircular tube body is provided with an upper buckle ring at the top end and a lower buckle ring at the bottom end, wherein the upper buckle ring is connected to the upper pole piece, and the lower buckle ring is connected to the lower pole piece.
[0010] Furthermore, a valve core outer sheath is provided on the outer side of the lower portion of the valve core, and the valve core outer sheath and the anti-ice and snow sheath are integrally formed and are both made of multi-molecule silicone rubber material.
[0011] Furthermore, a large umbrella skirt is arranged at the uppermost end of the anti-ice and snow sheath, and a plurality of small umbrella skirts are arranged at the lower end of the large umbrella skirt, and the diameter of the large umbrella skirt is greater than the diameter of the small umbrella skirt.
[0012] Furthermore, a plurality of small umbrella skirts are arranged on the outer sheath of the valve core, and a pressure equalizing ring is arranged between the outer sheath of the valve core and the anti-ice and snow sheath, and the pressure equalizing ring is connected to the lower pole piece.
[0013] The beneficial effects of the utility model are as follows: the utility model adopts a multi-layer protective sleeve design, the outer layer is used to prevent ice and snow, and the inner layer is used to protect the lightning arrester and voltage limiter itself, wherein a large umbrella skirt is arranged at the uppermost end of the outer protective sleeve to expand the coverage range, and a larger protective sleeve is designed to cover more areas of the lightning arrester and voltage limiter, reducing the chance of ice and snow directly contacting the equipment, and the protective sleeve is made of multi-molecular silicone rubber material, which can reduce the impact on the environment; a plurality of particles that increase adhesion are arranged on the inner protective sleeve, which can make the inner and outer protective sleeves fit together more closely, and a buckle structure is also arranged on the inner protective sleeve, through which it can be ensured that the interior of the lightning arrester and voltage limiter will not be affected by moisture, thereby greatly improving the stability of the transmission line. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0015] Figure 1 This is a schematic diagram of the installation of the utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the anti-ice and snow sheath;
[0017] Figure 3 This is a front view of the anti-ice and snow sheath;
[0018] Figure 4 It is a schematic diagram of the structure of the sealing moisture-proof sheath;
[0019] Figure 5 It is a front view of the sealing moisture-proof sheath;
[0020] In the figure, 1-wire pressing plate, 2-upper mounting part, 3-valve core, 4-upper pole piece, 5-sealing moisture-proof sheath, 6-valve plate, 7-anti-ice and snow sheath, 8-lower pole piece, 9-pressure equalizing ring, 10-valve core outer sheath, 11-lower mounting part, 12-power frequency cutter, 13-large umbrella skirt, 14-small umbrella skirt, 15-upper buckle ring, 16-lower buckle ring, 17-particles. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0023] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0024] See also Figures 1 to 5 A lightning arrester voltage limiter protective cover comprises an upper cover and a lower cover, both of which are sleeved on the outside of a valve core 3, wherein the upper cover is a multi-layer structure, comprising a sealing moisture-proof cover 5 and an anti-ice and snow cover 7, the lower cover is a valve core outer cover 10, the anti-ice and snow cover 7 is connected to the valve core outer cover 10, the anti-ice and snow cover 7 is sleeved on the outside of the sealing moisture-proof cover 5, and a plurality of particles 17 for increasing adhesion are arranged on the sealing moisture-proof cover 5.
[0025] In this embodiment, an upper mounting part 2 is provided at the uppermost end of the valve core 3, and a wire pressing plate 1 is provided on the upper mounting part 2; a lower mounting part 11 is provided at the lowermost end of the valve core 3, and a power frequency cutter 12 is provided on the lower mounting part 11. The power frequency cutter 12 is used to discharge the continuously occurring lightning energy to continue to ensure the safe operation of the power line.
[0026] In this embodiment, a plurality of valve plates 6 are sleeved on the outer side of the upper part of the valve core 3, and the valve plates 6 constitute a valve body. An upper pole plate 4 is arranged at the uppermost end of the valve body, and a lower pole plate 8 is arranged at the lowermost end of the valve body. A sealing ring is also arranged inside the lower pole plate 8 to further improve the moisture-proof performance of the lightning arrester.
[0027] In this embodiment, the sealed moisture-proof sheath 5 is composed of two semicircular tube bodies, and an upper buckle ring 15 is provided at the upper end of each semicircular tube body, and a lower buckle ring 16 is provided at the lower end, wherein the upper buckle ring 15 is connected to the upper pole piece 4, and the lower buckle ring 16 is connected to the lower pole piece 8. The upper buckle ring 15 and the lower buckle ring 16 of the two semicircular tube bodies are respectively embedded in the upper pole piece 4 and the lower pole piece 8, so that the valve body can be completely wrapped in the sealed moisture-proof sheath 5, which can effectively prevent the lightning arrester from getting damp.
[0028] In this embodiment, a valve core outer sheath 10 is provided on the outer side of the lower part of the valve core 3. The valve core outer sheath 10 and the anti-ice and snow sheath 7 are integrally formed and are both made of multi-molecular silicone rubber material. The multi-molecular silicone rubber material is a recyclable and degradable material, which can effectively reduce the impact on the environment.
[0029] In this embodiment, a large umbrella skirt 13 is provided at the uppermost end of the anti-ice and snow sheath 7, and a plurality of small umbrella skirts 14 are provided at the lower end of the large umbrella skirt 13. The diameter of the large umbrella skirt 13 is greater than the diameter of the small umbrella skirt 14. The area of the topmost umbrella skirt is increased to expand the coverage range, and a larger protective sheath is designed to cover more areas of the lightning arrester and reduce the chance of direct contact of ice and snow with the equipment. Furthermore, a plurality of small umbrella skirts 14 are provided on the valve core outer sheath 10, and a pressure equalizing ring 9 is also provided between the valve core outer sheath 10 and the anti-ice and snow sheath 7, and the pressure equalizing ring 9 is connected to the lower pole piece 8.
[0030] Based on the above improvements, the utility model has at least the following technical effects:
[0031] 1. Enhanced protection: The protective cover can provide more comprehensive protection for the lightning arrester and reduce the chance of ice and snow directly contacting the equipment. 2. Reduce ice and snow accumulation: It helps to guide ice and snow to slide down a specific path and reduce accumulation on the equipment. 3. Improve equipment stability: The design of the protective cover can reduce the impact of wind load and the weight of ice and snow on the stability of the equipment. 4. Extend equipment life: By reducing the physical and chemical erosion of ice and snow on the equipment, the service life of the lightning arrester can be extended. 5. Reduce maintenance costs: More effective protection can reduce equipment damage and failure caused by ice and snow, thereby reducing maintenance and repair costs. 6. Improve safety: Reduce short circuit and overvoltage events caused by ice and snow, and improve the safety of the power system. 7. Strong adaptability: It can better adapt to different installation environments and climatic conditions. 11. Cost-effectiveness: Although the initial investment may increase, in the long run, the protective cover can reduce the number and cost of maintenance. Through these advantages, the performance and reliability of equipment in ice and snow environments can be significantly improved, thereby ensuring the stable operation of the power system.
[0032] It should be noted that the terms "connection" and "setting" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "connection" and "setting" may explicitly or implicitly include one or more of the features. Moreover, the terms "connection", "setting" and the like are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. And for the aforementioned embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited to the described order of actions, because according to the present application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification belong to preferred embodiments, and the actions involved are not necessarily required by the present application.
[0033] The above embodiments describe the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the changes and modifications made by the technicians in this field shall be within the scope of protection of the claims attached to the utility model.
Claims
1. A lightning protection voltage limiter protective cover, characterized in that: The invention comprises an upper sleeve and a lower sleeve, wherein the upper sleeve and the lower sleeve are both sleeved on the outer side of a valve core (3), wherein the upper sleeve is a multi-layer structure, comprising a sealing moisture-proof sleeve (5) and an anti-ice and snow sleeve (7), and the lower sleeve is a valve core outer sleeve (10), wherein the anti-ice and snow sleeve (7) and the valve core outer sleeve (10) are connected, and the anti-ice and snow sleeve (7) is sleeved on the outer side of the sealing moisture-proof sleeve (5), and a plurality of particles (17) for increasing adhesion are arranged on the sealing moisture-proof sleeve (5).
2. A lightning arrester voltage limiter protective cover as claimed in claim 1, characterized in that: An upper mounting part (2) is arranged at the uppermost end of the valve core (3), and a wire pressing plate (1) is arranged on the upper mounting part (2); a lower mounting part (11) is arranged at the lowermost end of the valve core (3), and a power frequency cutter (12) is arranged on the lower mounting part (11).
3. A lightning protection voltage limiter protective cover as claimed in claim 2, characterized in that: A plurality of valve plates (6) are sleeved on the outer side of the upper portion of the valve core (3), and the valve plates (6) form a valve body. An upper pole plate (4) is arranged at the uppermost end of the valve body, and a lower pole plate (8) is arranged at the lowermost end of the valve body.
4. A lightning protection voltage limiter protective cover as claimed in claim 3, characterized in that: The sealing moisture-proof sheath (5) is composed of two semi-circular tube bodies, each semi-circular tube body having an upper buckle ring (15) at the uppermost end and a lower buckle ring (16) at the lowermost end, wherein the upper buckle ring (15) is connected to the upper pole piece (4), and the lower buckle ring (16) is connected to the lower pole piece (8).
5. A lightning protection voltage limiter protective cover as claimed in claim 4, characterized in that: A valve core outer sheath (10) is provided on the outer side of the lower portion of the valve core (3); the valve core outer sheath (10) and the anti-ice and snow sheath (7) are integrally formed and are both made of multi-molecule silicone rubber material.
6. A lightning arrester voltage limiter protective cover as claimed in claim 5, characterized in that: A large umbrella skirt (13) is arranged at the uppermost end of the anti-ice and snow sheath (7), and a plurality of small umbrella skirts (14) are arranged at the lower end of the large umbrella skirt (13), wherein the diameter of the large umbrella skirt (13) is greater than the diameter of the small umbrella skirt (14).
7. A lightning protection voltage limiter protective cover as claimed in claim 6, characterized in that: A plurality of small umbrella skirts (14) are arranged on the valve core outer sheath (10), and a pressure equalizing ring (9) is arranged between the valve core outer sheath (10) and the anti-ice and snow sheath (7), wherein the pressure equalizing ring (9) is connected to the lower pole piece (8).