Moistureproof outdoor high-voltage vacuum circuit breaker
By combining a double-layer moisture-proof shell design, air convection, electric heating, and desiccant, the insulation problem of outdoor high-voltage vacuum circuit breakers in humid environments is solved, achieving efficient moisture protection and low-cost equipment maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional outdoor high-voltage vacuum circuit breakers are susceptible to moisture intrusion in humid environments, leading to decreased insulation performance and corrosion of internal components. Existing sealing strips are prone to aging and maintenance costs are high, and the risk of condensation is difficult to control effectively.
It adopts a double-layer moisture-proof shell design, which removes moisture through ventilation interlayer and air convection, controls the internal temperature with electric heating film, uses desiccant to absorb moisture, is equipped with humidity sensor and controller to achieve active moisture prevention, and drainage system to remove accumulated water.
It effectively prevents condensation, improves insulation performance, reduces maintenance costs, and ensures stable operation of equipment in humid environments.
Smart Images
Figure CN224067612U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-voltage vacuum circuit breaker technology, and specifically discloses a moisture-proof outdoor high-voltage vacuum circuit breaker. Background Technology
[0002] Outdoor high-voltage vacuum circuit breakers are control and protection devices used in high-voltage power distribution networks. They mainly consist of integrated solid-sealed poles, current transformers, spring mechanisms, and enclosures. The current-carrying circuit of the vacuum circuit breaker is composed of the upper incoming terminal, vacuum interrupter contacts, and lower outgoing terminal. They are used to open and close various types of loads and for frequent operation. They are suitable for the construction and renovation of power equipment in urban power grids, rural power grids, mines, and railways.
[0003] Traditional outdoor vacuum circuit breakers are susceptible to moisture intrusion in humid and rainy environments, which can lead to decreased insulation performance, corrosion of internal components, and even short-circuit faults. Current technologies often use sealing strips for moisture prevention, but these seals are prone to aging after long-term use, resulting in high maintenance costs. In addition, the large temperature difference in outdoor environments can easily cause condensation to form inside the casing, making drainage difficult and further exacerbating insulation risks. Utility Model Content
[0004] This utility model proposes a moisture-proof outdoor high-voltage vacuum circuit breaker. After the air is filtered by the ventilation filter plate, air convection is formed in the interlayer, which carries away the moisture inside the inner shell, resulting in a good moisture-proof effect. The controller activates the electric heating film to raise the internal temperature above the dew point, eliminating the risk of condensation. The desiccant in the drying box absorbs moisture, improving the moisture-proof effect.
[0005] This utility model is implemented as follows: a moisture-proof outdoor high-voltage vacuum circuit breaker, comprising:
[0006] A double-layer moisture-proof shell, comprising a protective cover and an inner shell fixedly connected inside the protective cover, with a ventilation interlayer formed between the protective cover and the inner shell, two ventilation holes on the left and right sides of the outer wall of the protective cover, and ventilation filter plates on the left and right sides of the outer wall of the inner shell;
[0007] An active anti-condensation mechanism includes an electrically heated film installed at the top inside the inner shell, and a controller and a humidity sensor are provided on the right side of the top inside the inner shell.
[0008] A drying assembly includes a base fixedly connected to the bottom of a protective cover. The lower end face of the base has a mounting groove, and a drying box is detachably connected inside the mounting groove. The drying box contains a desiccant.
[0009] In a preferred embodiment of this utility model of a moisture-proof outdoor high-voltage vacuum circuit breaker, the ventilation hole is an upward-facing oblique hole structure.
[0010] In a preferred embodiment of this utility model, the electric heating film and the humidity sensor are both electrically connected to the controller.
[0011] As a preferred embodiment of the present invention, the lower end face of the protective cover is provided with a through groove communicating with the mounting groove, and a filter screen is detachably connected to the inner side of the through groove.
[0012] As a preferred embodiment of the present invention, a moisture-proof outdoor high-voltage vacuum circuit breaker is provided, wherein a limiting plate is fixedly connected to the lower end face of the drying box, and magnetic strips are fixedly connected to both the left and right sides of the upper end face of the limiting plate, and two magnetic holes matching the magnetic strips are provided on the lower end face of the base.
[0013] As a preferred embodiment of the present invention, the lower end face of the protective cover has two drainage holes communicating with the interior of the ventilation interlayer, and the outer walls of the two drainage holes are connected to drainage pipes.
[0014] As a preferred embodiment of the present invention, a moisture-proof outdoor high-voltage vacuum circuit breaker is provided with an umbrella-shaped flow guide fixedly connected to the upper part of the outer wall of the protective cover.
[0015] The beneficial effects of this utility model are:
[0016] Outside air enters the ventilation interlayer through the inclined ventilation holes. After being filtered by the ventilation filter plate, air convection is formed in the interlayer, carrying away the moisture inside the inner shell. The inclined setting of the ventilation holes can effectively reduce the amount of rainwater entering the ventilation interlayer through the ventilation holes. The small amount of rainwater that enters the protective cover is discharged through the drainage holes and drainage pipes to avoid water accumulation inside, resulting in good moisture-proof effect.
[0017] When the humidity sensor detects that the humidity of the inner casing is greater than 75%, the controller activates the electric heating film to uniformly heat the top of the inner casing, raising the internal temperature above the dew point and eliminating the risk of condensation.
[0018] Moist air inside the inner shell enters the mounting slot through the through-slot. The desiccant inside the drying box absorbs moisture, improving the moisture-proof effect. The drying box is detachably connected to the mounting slot, making it easy to remove and replace the desiccant and facilitating maintenance. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0020] Figure 1 This is a cross-sectional view of the overall structure of this utility model;
[0021] Figure 2 This is a three-dimensional structural diagram of the drying box of this utility model;
[0022] Figure 3 This is a structural diagram of the outer shell of this utility model;
[0023] Figure 4 This is a diagram of the overall external structure of this utility model.
[0024] The markings in the diagram are: 1. Protective cover; 2. Inner shell; 3. Ventilation interlayer; 4. Ventilation hole; 5. Ventilation filter plate; 6. Electric heating film; 7. Controller; 8. Humidity sensor; 9. Drain hole; 10. Drain pipe; 11. Base; 12. Mounting groove; 13. Drying box; 14. Limiting plate; 15. Magnetic strip; 16. Through groove; 17. Filter screen; 18. Deflector. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.
[0026] Please see Figure 1-4 A moisture-proof outdoor high-voltage vacuum circuit breaker, comprising:
[0027] The double-layer moisture-proof shell includes a protective cover 1 and an inner shell 2 fixedly connected inside the protective cover 1. A ventilation interlayer 3 is formed between the protective cover 1 and the inner shell 2. Two ventilation holes 4 are opened on the left and right sides of the outer wall of the protective cover 1. Ventilation filter plates 5 are provided on the left and right sides of the outer wall of the inner shell 2.
[0028] The active anti-condensation mechanism includes an electric heating film 6 installed at the top inside the inner shell 2, and a controller 7 and a humidity sensor 8 are provided on the right side of the top inside the inner shell 2.
[0029] The drying assembly includes a base 11 fixedly connected to the bottom of the protective cover 1. The lower end face of the base 11 has a mounting groove 12. A drying box 13 is detachably connected inside the mounting groove 12. A desiccant is placed inside the drying box 13.
[0030] In this embodiment: external air enters the ventilation interlayer 3 through the inclined ventilation hole 4, and after being filtered by the ventilation filter plate 5, air convection is formed in the interlayer, which carries away the moisture inside the inner shell 2. The inclined setting of the ventilation hole 4 can effectively reduce the amount of rainwater entering the ventilation interlayer 3 through the ventilation hole 4. The small amount of rainwater entering the protective cover 1 is discharged through the drain hole 9 and the drain pipe 10 to avoid water accumulation inside, and the moisture-proof effect is good.
[0031] When the humidity sensor 8 detects that the humidity of the inner housing 2 is greater than 75%, the controller 7 activates the electric heating film 6 to uniformly heat the top of the inner housing 2, raising the internal temperature to above the dew point and eliminating the risk of condensation.
[0032] Moist air inside the inner shell 2 enters the mounting groove 12 through the through groove 16. The desiccant in the drying box 13 absorbs moisture and improves the moisture-proof effect. The drying box 13 is detachably connected to the mounting groove 12 for easy removal and replacement of the desiccant.
[0033] As a technical optimization of this utility model, the ventilation hole 4 is an upward-facing oblique hole structure.
[0034] In this embodiment, the ventilation hole 4 is an upward-sloping hole structure, which can effectively reduce the amount of rainwater entering the ventilation interlayer 3 through the ventilation hole 4.
[0035] As a technical optimization of this utility model, both the electric heating film 6 and the humidity sensor 8 are electrically connected to the controller 7.
[0036] In this embodiment: the electric heating film 6 and the humidity sensor 8 are both electrically connected to the controller 7. When the humidity sensor 8 detects that the humidity of the inner shell 2 is >75%, the controller 7 activates the electric heating film 6 to uniformly heat the top of the inner shell 2, raising the internal temperature to above the dew point and eliminating the risk of condensation.
[0037] As a technical optimization of this utility model, the lower end face of the protective cover 1 is provided with a through groove 16 that communicates with the mounting groove 12, and a filter screen 17 is detachably connected to the inner side of the through groove 16.
[0038] In this embodiment, a filter screen 17 is detachably connected to the inner side of the through groove 16 to facilitate the filtering of impurities and dirt from the external environment.
[0039] As a technical optimization of this utility model, a limiting plate 14 is fixedly connected to the lower end face of the drying box 13, and magnetic strips 15 are fixedly connected to both the left and right sides of the upper end face of the limiting plate 14. Two magnetic holes matching the magnetic strips 15 are opened on the lower end face of the base 11.
[0040] In this embodiment: magnetic strips 15 are fixedly connected to both the left and right sides of the upper end face of the limiting plate 14, and two magnetic holes matching the magnetic strips 15 are opened on the lower end face of the base 11. After the drying box 13 is inserted into the mounting groove 12, the magnetic strips 15 on both sides are respectively inserted into the two magnetic holes and are attracted and fixed to each other, thereby improving the installation stability of the drying box 13.
[0041] As a technical optimization of this utility model, the lower end face of the protective cover 1 is provided with two drainage holes 9 that communicate with the interior of the ventilation interlayer 3, and the outer walls of the two drainage holes 9 are connected to drainage pipes 10.
[0042] In this embodiment, a small amount of rainwater that enters the protective cover 1 is discharged through the drain hole 9 and the drain pipe 10, preventing water accumulation inside and providing good moisture protection.
[0043] As a technical optimization of this utility model, an umbrella-shaped flow guide 18 is fixedly connected to the upper part of the outer wall of the protective cover 1.
[0044] In this embodiment, an umbrella-shaped guide shroud 18 is fixedly connected to the upper part of the outer wall of the protective cover 1, which serves to prevent rainwater from entering and guide the flow of most rainwater to the outer ring of the equipment.
[0045] The working principle and usage process of this utility model: External air enters the ventilation interlayer 3 through the inclined ventilation hole 4, and after being filtered by the ventilation filter plate 5, air convection is formed in the interlayer, which carries away the moisture inside the inner shell 2. The inclined setting of the ventilation hole 4 can effectively reduce the amount of rainwater entering the ventilation interlayer 3 through the ventilation hole 4. The small amount of rainwater entering the protective cover 1 is discharged through the drain hole 9 and the drain pipe 10 to avoid water accumulation inside, thus achieving good moisture-proof effect. When the humidity sensor 8 detects that the humidity of the inner shell 2 is >75%, the controller 7 activates the electric heating film 6 to uniformly heat the top of the inner shell 2, raising the internal temperature to above the dew point and eliminating the risk of condensation. The humid air inside the inner shell 2 enters the mounting groove 12 through the through groove 16. The desiccant in the drying box 13 absorbs moisture, improving the moisture-proof effect. The drying box 13 is detachably connected to the mounting groove 12 for easy disassembly and replacement of the desiccant.
[0046] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0047] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A moisture-proof outdoor high-voltage vacuum circuit breaker, characterized by: Include: Double layer moisture-proof shell, the double layer moisture-proof shell includes protective cover (1) and fixedly connected to the inner shell (2) inside protective cover (1), ventilation interlayer (3) is formed between protective cover (1) and inner shell (2), two ventilation holes (4) are formed in the outer wall left and right sides of protective cover (1), ventilation filter plate (5) is arranged in the outer wall left and right sides of inner shell (2); Active anti-frost mechanism, the active anti-frost mechanism includes electric heating film (6) installed to the inner top of inner shell (2), controller (7) and humidity sensor (8) are arranged on the right side of the inner top of inner shell (2); Drying assembly, the drying assembly includes fixedly connected to the bottom of protective cover (1) base (11), the lower end surface of base (11) is provided with mounting groove (12), the inside of mounting groove (12) is detachably connected with drying box (13), drying agent is arranged in the inside of drying box (13).
2. The moisture-proof outdoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The ventilation hole (4) is an upward inclined hole structure.
3. The moisture-proof outdoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The electric heating film (6) and humidity sensor (8) are electrically connected with controller (7).
4. The moisture-proof outdoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The lower end surface of protective cover (1) is provided with through groove (16) that communicates with mounting groove (12), the inside of through groove (16) is detachably connected with filter screen (17).
5. The moisture-proof outdoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The lower end surface of drying box (13) is fixedly connected with limiting plate (14), the upper end surface left and right sides of limiting plate (14) are fixedly connected with magnetic strip (15), and the lower end surface of base (11) is provided with two magnetic holes matched with magnetic strip (15).
6. The moisture-proof outdoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The lower end surface of protective cover (1) is provided with two drainage holes (9) that communicate with the inside of ventilation interlayer (3), and the outer wall of two drainage holes (9) is communicated with drain pipe (10).
7. The moisture-proof outdoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The outer wall of protective cover (1) is fixedly connected with the fairing of flow guide cover (18) above.