10KV pole-mounted vacuum circuit breaker

Abstract

A 10kV pole-mounted vacuum circuit breaker comprises an operation box and a plurality of protective shells arranged above the operation box, the upper end face of the operation box is provided with a positioning slot for rapidly limiting the final assembly position of the protective shells on the operation box, the inner circumferential face of the positioning slot is provided with a locking unit, the protective shells are provided with locked units, and the locked units are provided with locking units. The locking unit enters the locked unit after the protective shell is placed in the positioning slot, and the locking unit and the locked unit are locked and combined by rotating the protective shell so as to prevent the protective shell from being separated from the operation box. The beneficial effects of the utility model lie in that the provided structure can be completed by only one person without the intervention of multiple persons, and the assembly of the protection shell and the operation box does not need tools or extra parts, so that the rapid assembly or rapid disassembly of the protection shell can be realized, and the operation box is convenient and rapid.

Description

Technical Field

[0001] This utility model relates to the field of vacuum circuit breaker technology, and in particular to a 10kV pole-mounted vacuum circuit breaker. Background Technology

[0002] A pole-mounted vacuum circuit breaker (VCB) is a high-voltage circuit breaker used in power systems. It uses vacuum as the arc-extinguishing medium to open and close circuits in power systems. The main components of a pole-mounted vacuum circuit breaker include a vacuum interrupter, operating mechanism, contacts, conductive parts, and control system. When the current exceeds a set value, the contacts separate, and the vacuum environment in the vacuum interrupter acts as the arc-extinguishing medium, preventing the arc from continuing to exist, thereby breaking the circuit.

[0003] Publication (Announcement) No.: CN220821397U discloses a 10kV pole-mounted vacuum circuit breaker, including an operating box. The operating box includes a protective shell disposed on its upper surface. There are three protective shells. The upper surface of the operating box is provided with an installation assembly for installing the protective shells, and one side of the protective shell is provided with a disassembly assembly for removing the protective shells. The installation assembly includes a hollow column, a sliding groove, a wedge block, and a first spring. The hollow column is fixedly connected to the upper surface of the operating box. The sliding groove is opened on both sides of the outer side of the hollow column. The wedge block is located in the sliding groove. One end of the first spring is fixedly connected to one side of the wedge block, and the other end of the first spring is fixedly connected to one side of the sliding groove. Two symmetrically arranged slots are opened on the lower inner side of the protective shell, and a part of the wedge block is located in the slot. This type of pole-mounted vacuum circuit breaker improves the efficiency of protective shell installation through its structure, but it has drawbacks. During the protective shell installation stage, when the protective shell is inserted into the hollow column and moved to the wedge block, the operator needs to apply a pushing force to the wedge block to push it completely into the groove before the wedge block can be released from interfering with the movement path of the protective shell. Moreover, the applied pushing force can only be released when the protective shell covers part of the wedge block. In addition, each hollow column has two symmetrically distributed installation components, which means that the installation of the protective shell cannot be completed by a single person alone, but requires at least two people, making the installation process quite cumbersome. Utility Model Content

[0004] This invention aims to overcome the shortcomings of the prior art by providing a 10kV pole-mounted vacuum circuit breaker to solve the aforementioned problems.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: This 10kV pole-mounted vacuum circuit breaker includes an operating box and several protective shells disposed on top of it. The upper end face of the operating box is provided with a positioning slot for quickly limiting the protective shell to the final assembly position of the operating box. A locking unit is provided on the inner circumferential surface of the positioning slot. A locked unit is provided on the protective shell. After the protective shell is placed into the positioning slot, the locking unit enters the locked unit, and by rotating the protective shell, the locking unit and the locked unit are locked together to prevent the protective shell from separating from the operating box.

[0006] Further improvements include the addition of multiple locking units distributed circumferentially along the inner circumferential surface of the positioning slots. These units are configured as columnar members, with locking slots provided on the outer circumferential surface of the columnar members.

[0007] Further improvements include matching the number of locked units with the number of locking units, which includes a first path groove, a second path groove, an end point groove, and a locking block formed on the protective shell. The columnar member reaches the end point groove via the first path groove and the second path groove, and the locking block locks with the locking socket when it reaches the end point groove.

[0008] Further improvements include a path switching groove between the first path groove and the second path groove, which guides the columnar member from the first path groove to the second path groove.

[0009] Further improvements include the formation of a path switching groove with a contact surface that can contact a portion of the surface of the columnar member when the columnar member reaches the path switching groove.

[0010] Further improvements include dividing the locking socket into a sliding section and a locking section, with the locking block and sliding section having a clearance fit and the locking section having an interference fit.

[0011] With further improvements, the insertion path of the locking socket and locking block with a mating gap is gradually reduced.

[0012] The beneficial effects of this utility model are:

[0013] The structure provided by this utility model can be completed by only one person without the need for multiple people to intervene. Furthermore, the assembly of the protective shell and the control box can be completed quickly or quickly without the need for tools or additional parts, making it convenient and fast. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0016] Figure 3 This utility model Figure 2 A magnified view of part A in the middle;

[0017] Figure 4 This is a schematic diagram of the locking unit of this utility model. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Referring to the attached diagram: This 10kV pole-mounted vacuum circuit breaker includes an operating box 1 and several protective shells 2 disposed on top of it. The upper surface of the operating box 1 has a positioning slot 11 for quickly positioning the protective shells 2 in their final assembly position. A locking unit 3 is provided on the inner circumferential surface of the positioning slot 11. Locking units 4 are provided on the protective shells 2. After the protective shell 2 is inserted into the positioning slot 11, the locking unit 3 enters the locking unit 4, and by rotating the protective shell 2, the locking unit 3 and the locking unit 4 are locked together to prevent the protective shell 2 from separating from the operating box 1. The principle of this invention is that after the protective shell 2 is inserted into the positioning slot 11 provided by the operating box 1, it is only necessary to match the positions of the locking unit 3 and the locking unit 4. After positioning, rotation is sufficient to lock the locking unit 3 and the locking unit 4 together, thus completing the installation of the protective shell 2 on the operating box 1. This method can be completed by one person without the need for multiple people, making it convenient and quick.

[0020] The locking unit 3 has multiple units distributed along the circumferential direction of the inner circumferential surface of the positioning slot 11. It is configured as a columnar member, and a locking socket 31 is provided on the outer circumferential surface of the columnar member. This configuration allows the protective shell 2 to have multiple locking positions, which increases the locking strength. The locking socket 31 is used to lock and engage with the locked unit 4, and the opening of the locking socket 31 exists in the rotation path of the protective shell 2. Thus, the locking unit 3 and the locked unit 4 can be locked and engaged by rotation.

[0021] The number of locked units 4 matches the number of locking units 3. Each unit includes a first path groove 41, a second path groove 42, an end point groove 43, and a locking block 44 formed on the protective shell 2. The columnar member reaches the end point groove 43 via the first path groove 41 and the second path groove 42. Upon reaching the end point groove 43, the locking block 44 locks into the locking socket 31. This arrangement requires the columnar member to pass through two path grooves to reach the end point groove 43. The first path groove 41 and the second path groove 42 are perpendicular to each other. This extends the length of the columnar member to reach the end point groove 43 and changes the path direction. This increases the difficulty for the columnar member to detach from the locked unit 4 if the locking engagement between the locking block 44 and the locking socket 31 fails unexpectedly. The locking block 44 completes the installation of the protective shell 2 by locking into the locking block 31.

[0022] Between the first path groove 41 and the second path groove 42, there is a path switching groove 45 that guides the columnar member from the first path groove 41 to the second path groove 42. The path switching groove 45 serves as the end point of the first path groove 41 and the beginning point of the second path groove 42. It can help the columnar member quickly move from the first path groove 41 to the second path groove 42, and also provides a corresponding prompt for the locking unit 3 and the locked unit 4 that are not visible during installation (cannot be observed).

[0023] The path switching groove 45 is formed with a contact surface 451 that can contact a portion of the surface of the columnar member when the columnar member arrives at the path switching groove 45, so that the columnar member can be accurately positioned in the path switching groove 45, thereby matching the accuracy of the columnar member entering the second path groove 42.

[0024] The locking socket 31 is divided into a sliding section 311 and a locking section 312. The locking block 44 is clearance-fitted with the sliding section 311 and interference-fitted with the locking section 312. This arrangement allows the protective shell 2 and the operating box 1 to be combined without the need for tools or additional parts, enabling quick installation or removal of the protective shell 2, which is convenient and fast.

[0025] The insertion path of the locking socket 31 and the locking block 44 gradually decreases. This setting makes the change of the slot width linear, which makes the insertion process more stable and avoids the phenomenon of getting stuck in the middle of the combination. It also allows the locking block 44 to quickly enter the locking socket 31 by utilizing the size difference between it and the sliding section 311.

[0026] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A 10kV pole-mounted vacuum circuit breaker, comprising an operating box (1) and a plurality of protective shells (2) disposed above it, characterized in that: The upper surface of the operating box (1) is provided with a positioning slot (11) for quickly defining the protective shell (2) in the final assembly position of the operating box (1). A locking unit (3) is provided on the inner circumferential surface of the positioning slot (11). A locked unit (4) is provided on the protective shell (2). After the protective shell (2) is placed into the positioning slot (11), the locking unit (3) enters the locked unit (4). By rotating the protective shell (2), the locking unit (3) and the locked unit (4) are locked together to prevent the protective shell (2) from separating from the operating box (1).

2. The 10kV pole-mounted vacuum circuit breaker according to claim 1, characterized in that: The locking unit (3) has multiple units distributed along the circumferential direction of the inner circumferential surface of the positioning slot (11), and is configured as a columnar member, with a locking socket (31) provided on the outer circumferential surface of the columnar member.

3. The 10kV pole-mounted vacuum circuit breaker according to claim 2, characterized in that: The number of locked units (4) matches the number of locked units (3), which includes a first path groove (41), a second path groove (42), an end point groove (43), and a locking plug (44) formed on the protective shell (2). The columnar member reaches the end point groove (43) via the first path groove (41) and the second path groove (42), and the locking plug (44) locks into the locking socket (31) when it reaches the end point groove (43).

4. The 10kV pole-mounted vacuum circuit breaker according to claim 3, characterized in that: There is a path switching slot (45) between the first path slot (41) and the second path slot (42) to guide the columnar member from the first path slot (41) to the second path slot (42).

5. The 10kV pole-mounted vacuum circuit breaker according to claim 4, characterized in that: The path switching groove (45) is formed with a contact surface (451) that can contact a portion of the surface of the columnar member when the columnar member reaches the path switching groove (45).

6. The 10kV pole-mounted vacuum circuit breaker according to claim 3, characterized in that: The locking socket (31) is divided into a sliding section (311) and a locking section (312). The locking block (44) is clearance-fitted with the sliding section (311) and interference-fitted with the locking section (312).

7. The 10kV pole-mounted vacuum circuit breaker according to claim 6, characterized in that: The insertion path of the mating gap between the locking socket (31) and the locking block (44) gradually decreases.

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