Waterproof upper cover of vacuum circuit breaker

Abstract

The utility model relates to the technical field of upper covers of circuit breakers, in particular to a waterproof upper cover of a vacuum circuit breaker. The problem of poor sealing degree of the upper cover of the vacuum circuit breaker in the prior art is solved, and the practicability of equipment is improved. The upper cover structurally comprises an upper cover body, a mounting frame is arranged at the lower end of the upper cover body, a gasket groove is formed in the mounting frame, a sealing ring is arranged in the gasket groove, the two ends of the sealing ring abut against the upper cover body and the gasket groove respectively, the periphery of the mounting frame is further in threaded connection with a plurality of pressing profiles, and the pressing profiles abut against the upper cover body. According to the embodiment, the design that in the prior art, bolt holes are directly formed in the upper cover body, and the upper cover body is directly fixed to the installation frame is replaced, due to the fact that the stress area between the upper cover body and the sectional material is enlarged, stress of the upper cover body pressed on the sealing ring is more uniform, the sealing effect is better, and practicability is high.

Description

Technical Field

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[0009]

[0001] The utility model relates to the technical field of the upper cover of a circuit breaker, and specifically, to a waterproof upper cover of a vacuum circuit breaker. Background Art

[0002] A vacuum circuit breaker is a device used to disconnect or connect circuits in a power system and is mainly applied to medium and high voltage power equipment. Its working principle is to use vacuum as the medium to quickly extinguish the arc when the arc occurs, thereby achieving the disconnection and closing of the circuit. Among them, the waterproof upper cover can protect the vacuum circuit breaker from operating outdoors or in harsh environments, prevent water, dust, chemical substances, etc. from entering the interior of the vacuum circuit breaker, and ensure the safety and stability of the equipment.

[0003] In order to facilitate the maintenance of the circuit breaker and ensure the sealing of the circuit breaker, a sealing ring is provided between the circuit breaker and the upper cover, and the upper cover is locked and fixed to the circuit breaker through bolts.

[0004] Although this can facilitate the maintenance and sealing of the vacuum circuit breaker, there are still the following disadvantages: Since the upper cover is directly fixed by bolts, the stress points of the upper cover are only the positions of the bolts, which may cause different degrees of pressing and sealing of the upper cover at different positions, and thus there may be a risk of leakage at the part of the upper cover with less force. Content of the Utility Model

[0005] The utility model provides a waterproof upper cover of a vacuum circuit breaker, which solves the problem of poor sealing degree of the upper cover of the existing vacuum circuit breaker and improves the practicability of the equipment.

[0006] The technical solution of the utility model is as follows:

[0007] A waterproof upper cover of a vacuum circuit breaker includes an upper cover body.

[0008] An installation frame is provided at the lower end of the upper cover body. A washer groove is provided on the installation frame. A sealing ring is provided in the washer groove. Both ends of the sealing ring are respectively abutted against the upper cover body and the washer groove. A plurality of pressing profiles are also threadedly connected around the installation frame, and each pressing profile is abutted against the upper cover body.

[0009] Further, the upper cover body includes a cover surface. An installation part is fixed at the lower end of the cover surface. The cover surface has a quadrangular pyramid structure, and the installation part has a "hui" - shaped structure.

[0010] Further, a first positioning hole and a second positioning hole are respectively provided on both sides of the installation part. A third positioning hole and a fourth positioning hole are provided on the installation frame. The first positioning hole corresponds to the third positioning hole, and the second positioning hole corresponds to the fourth positioning hole. A pressure relief pipe is further provided at the top of the upper cover body.

[0011] Further, the number of the pressing profiles is four. The pressing profiles include a first pressing profile, a second pressing profile, a third pressing profile and a fourth pressing profile. The first pressing profile and the second pressing profile are parallel to each other. The third pressing profile and the fourth pressing profile are parallel to each other. Both ends of the second pressing profile are provided with connecting parts, and each of the connecting parts has a "7"-shaped structure. First locking bolts are provided on the first pressing profile, the second pressing profile, the third pressing profile and the fourth pressing profile. The two connecting parts are respectively connected and fixed to the two ends of the first pressing profile and the two ends of the second pressing profile through the first locking bolts. The fourth pressing profile has the same structure as the second pressing profile.

[0012] Further, the washer groove has a square structure with a hollow center, and the cross-section of the washer groove is an isosceles trapezoid structure. The sealing ring is made of rubber material.

[0013] Further, a maintenance port is provided on the installation frame, and a limiting edge is provided at the bottom of the installation frame. The limiting edge has a "square" structure with a hollow center.

[0014] Further, mounting holes are further provided around the limiting edge, and second locking bolts are threadedly connected to the mounting holes.

[0015] The working principle and beneficial effects of the present utility model are as follows:

[0016] The working process of this embodiment: When the circuit breaker needs to repair the internal parts, first rotate the first locking bolt on the pressing profile, then move each pressing profile away from the upper cover body, and then take out the upper cover body. Repair the internal parts of the circuit breaker through the maintenance port. After the repair is completed, press the upper cover body on the sealing ring again, and then rotate the first locking bolt on the profile to press and seal the upper cover body on the circuit breaker again.

[0017] In this embodiment, an installation frame is provided at the lower end of the upper cover body, a sealing ring is provided between the installation frame and the upper cover body, and the installation frame is abutted and fixed on the upper cover body through the pressing profile, replacing the design of directly fixing the upper cover body on the installation frame by directly providing bolt holes on the upper cover body in the prior art. In this embodiment, since the profile expands the stress area with the upper cover body, the stress of the upper cover body pressing on the sealing ring is more uniform, the sealing effect is better, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0019] Figure 1 is a structural schematic diagram of the prior art;

[0020] Figure 2It is the whole structure schematic view of the embodiment;

[0021] Figure 3 It is the whole structure plan view of the embodiment;

[0022] Figure 4 It is the whole structure bottom view of the embodiment;

[0023] Figure 5 It is the structure schematic view of the upper cover body in the embodiment;

[0024] Figure 6 It is the connection structure schematic view of the upper cover body and the installation frame in the embodiment.

[0025] In the figure:

[0026] 1, upper cover body; 11, cover surface; 12, installation part; 121, first positioning hole; 122, second positioning hole; 2, pressure relief pipe; 31, first pressing profile; 32, second pressing profile; 321, connection part; 322, first locking bolt; 33, third pressing profile; 34, fourth pressing profile; 4, installation frame; 41, second locking bolt; 42, access hole; 43, gasket groove; 44, limiting edge; 45, third positioning hole; 46, fourth positioning hole; 5, sealing ring. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are involved in the protection scope of the utility model.

[0028] As Figures 2-6 shown, the embodiment provides a waterproof upper cover of vacuum circuit breaker, which comprises an upper cover body 1.

[0029] The installation frame 4 in the embodiment is arranged at the lower end of the upper cover body 1, the gasket groove 43 is arranged on the installation frame 4, the sealing ring 5 is arranged in the gasket groove 43, the two ends of the sealing ring 5 abut against the upper cover body 1 and the gasket groove 43 respectively, and a plurality of pressing profiles are threadedly arranged around the installation frame 4, and each pressing profile abuts against the upper cover body 1. The embodiment is the upper cover structure of the top of the vacuum circuit breaker, in the installation, the installation frame 4 is first installed and fixed on the top of the vacuum circuit breaker, and then the waterproof upper cover is installed on the installation frame 4.

[0030] In this embodiment, the upper cover body 1 includes a cover surface 11, and an installation part 12 is fixedly arranged at the lower end of the cover surface 11. The cover surface 11 is in a quadrangular pyramid structure, and the installation part 12 is in a structure of a Chinese character 'hui'. Such a design of the cover surface 11 ensures that even if there is rainwater on the upper cover of the circuit breaker, the rainwater will slide down along the cover surface 11, so that the rainwater will not accumulate on the upper cover body 1 and cause the rainwater to penetrate into the internal part of the vacuum circuit breaker.

[0031] In this embodiment, the first positioning hole 121 and the second positioning hole 122 are arranged on both sides of the installation part 12, the third positioning hole 45 and the fourth positioning hole 46 are arranged on the installation frame 4, the first positioning hole 121 corresponds to the third positioning hole 45, the second positioning hole 122 corresponds to the fourth positioning hole 46, and the pressure relief pipe 2 is arranged at the top of the upper cover body 1. The design of the first positioning hole 121, the second positioning hole 122, the third positioning hole 45 and the fourth positioning hole 46 is such that when the upper cover body 1 is installed on the installation frame 4, the first positioning hole 121, the second positioning hole 122, the third positioning hole 45 and the fourth positioning hole 46 can be aligned first, and then the upper cover body 1 is installed by pressing the profile, ensuring that the installation positioning of the upper cover body 1 is more accurate, the cooperation with the sealing ring 5 is closer, and the sealing effect of the vacuum circuit breaker is better.

[0032] In this embodiment, the number of the pressing profiles is four. The pressing profiles include a first pressing profile 31, a second pressing profile 32, a third pressing profile 33 and a fourth pressing profile 34. The first pressing profile 31 and the second pressing profile 32 are parallel to each other, the third pressing profile 33 and the fourth pressing profile 34 are parallel to each other. Connecting parts 321 are arranged at both ends of the second pressing profile 32, and each connecting part 321 is in a structure of a Chinese character 'qi'. Such a design enables the first pressing profile 31, the second pressing profile 32, the third pressing profile 33 and the fourth pressing profile 34 to be fixedly connected by bolts, and the connection of each pressing profile part forms an integral body, ensuring uniform force application to the upper cover body 1. First locking bolts 322 are arranged on the first pressing profile 31, the second pressing profile 32, the third pressing profile 33 and the fourth pressing profile 34. The two connecting parts 321 are respectively connected and fixed with both ends of the first pressing profile 31 and both ends of the second pressing profile 32 through the first locking bolts 322. The fourth pressing profile 34 has the same structure as the second pressing profile 32. Such a design ensures that the first pressing profile, the second pressing profile 32, the third pressing profile 33 and the fourth pressing profile 34 can all be in contact with the upper cover body 1 horizontally, making the force on the periphery of the upper cover body 1 uniform and ensuring the sealing effect between the upper cover body 1 and the installation frame 4.

[0033] In this embodiment, a maintenance opening 42 is provided on the installation frame 4, and a limiting edge 44 is provided at the bottom of the installation frame 4. The limiting edge 44 is in a structure of a Chinese character 'hui'.

[0034] The gasket groove 43 in the embodiment is in a character-shaped structure, the cross section of the gasket groove 43 is in an isosceles trapezoidal structure, and the sealing ring 5 is made of rubber material. Such design ensures that the sealing ring 5 can be embedded in the gasket groove 43, ensures that the sealing ring 5 will not be separated from the gasket groove 43 during installation, and installation is more convenient and reliable. The embodiment can also divide the sealing ring 5 into two, one is placed in the gasket groove 43, and the other is placed near the access hole 42 of the installation frame 4, so as to realize expansion of the sealing area and enhance the sealing effect between the upper cover body 1 and the installation frame 4.

[0035] The mounting hole in the embodiment is arranged around the limiting edge 44, and the second locking bolt 41 is threadedly arranged in the mounting hole. During installation, the installation frame 4 is first placed into the circuit breaker along the limiting edge 44, and then the installation frame 4 is installed and fixed on the circuit breaker through the second locking bolt 41.

[0036] The working process of the embodiment is as follows: when the circuit breaker needs to be overhauled, the first locking bolt 322 on the pressing profile is first rotated, then each pressing profile is moved away from the upper cover body 1, and then the upper cover body 1 is taken out, the internal parts of the circuit breaker are overhauled through the access hole 42, after the overhaul is completed, the upper cover body 1 is pressed on the sealing ring 5 again, and then the first locking bolt 322 on the profile is rotated to press the upper cover body 1 tightly and seal the circuit breaker again.

[0037] The above is only a preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A waterproof upper cover for a vacuum circuit breaker, comprising an upper cover body (1), characterized in that an installation frame (4) is provided at the lower end of the upper cover body (1), a washer groove (43) is provided on the installation frame (4), a sealing ring (5) is provided in the washer groove (43), both ends of the sealing ring (5) are respectively abutted against the upper cover body (1) and the washer groove (43), and a plurality of pressing profiles are threadedly connected around the installation frame (4), and each of the pressing profiles is abutted against the upper cover body (1).

2. The waterproof cover for a vacuum circuit breaker according to claim 1, characterized in that, The upper cover body (1) includes a cover surface (11), an installation part (12) is fixed at the lower end of the cover surface (11), the cover surface (11) is of a quadrangular pyramid structure, and the installation part (12) is of a "hui" - shaped structure.

3. The waterproof cover for a vacuum circuit breaker according to claim 2, characterized in that, First positioning holes (121) and second positioning holes (122) are respectively provided on both sides of the installation part (12), a third positioning hole (45) and a fourth positioning hole (46) are provided on the installation frame (4), the first positioning hole (121) corresponds to the third positioning hole (45), the second positioning hole (122) corresponds to the third positioning hole (45), and a pressure relief pipe (2) is further provided at the top of the upper cover body (1).

4. The waterproof cover for a vacuum circuit breaker according to claim 1, characterized in that, The number of the pressing profiles is four, the pressing profiles include a first pressing profile (31), a second pressing profile (32), a third pressing profile (33) and a fourth pressing profile (34), the first pressing profile (31) and the second pressing profile (32) are parallel to each other, the third pressing profile (33) and the fourth pressing profile (34) are parallel to each other, connection parts (321) are provided at both ends of the second pressing profile (32), each of the connection parts (321) is of a "7" - shaped structure, first locking bolts (322) are provided on the first pressing profile (31), the second pressing profile (32), the third pressing profile (33) and the fourth pressing profile (34), and both sides of the connection parts (321) are respectively connected and fixed to both ends of the first pressing profile (31) and both ends of the second pressing profile (32) through the first locking bolts (322), and the fourth pressing profile (34) has the same structure as the second pressing profile (32).

5. A waterproof cover for a vacuum circuit breaker according to claim 1, characterized in that, The washer groove (43) is of a "hui" - shaped structure, the cross - section of the washer groove (43) is of an isosceles trapezoid structure, and the sealing ring (5) is made of rubber material.

6. A waterproof cover for a vacuum circuit breaker according to claim 1, characterized in that, An inspection opening (42) is provided on the installation frame (4), a limiting edge (44) is provided at the bottom of the installation frame (4), and the limiting edge (44) is of a "hui" - shaped structure.

7. A waterproof cover for a vacuum circuit breaker according to claim 6, characterized in that, Installation holes (411) are further provided around the limiting edge (44), and second locking bolts (41) are threadedly connected in the installation holes (411).

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