Frame-type switching device

Abstract

The utility model relates to a frame type switching device, which comprises an outer shell, an arc extinguishing device and a static end line bank, the outlet of the arc extinguishing device is fixed at the first side end part of the outer shell, and the static end line bank is led out from the first side end part of the outer shell. According to the utility model, the outlets of the static end line bank and the arc extinguishing device are integrated at the end part of the first side, the static end line bank only needs to adopt a simple straight plate-shaped structure for line outgoing, and compared with the scheme that the static end line bank is bent from the back part of the bottom plate for line outgoing in the prior art, the length and the copper material consumption of the static end line bank can be reduced, and the production cost is reduced. And loop resistance and temperature rise are reduced. Meanwhile, the space at the back of the bottom plate can be provided with a hanging structure, such as a hanging hole, a hook and the like, so that the switching device can be hung conveniently.

Description

Technical Field

[0001] The utility model relates to the field of switch electrical appliances, in particular to improvements to the installation layout of arc extinguishing devices and wiring blocks. Background Art

[0002] Frame-type switchgear, such as frame-type circuit breakers or frame-type disconnect switches, are commonly used to close incoming lines, busbars, and other high-current circuits in power distribution systems. They also differ in appearance from common molded case switchgear. Frame-type switchgear are generally larger, feature more modules, and, unlike molded case switchgear, lack the plastic case that encloses most components. Figure 1 、 2 The figure shows an existing frame disconnector, comprising a housing formed by a base plate 1 and a pedestal 2, with an arc outlet of an arc extinguishing device 5 fixedly connected to the upper portion of the housing. The moving terminal block 3 and the static terminal block 4 first extend up and down within the housing, and are finally bent and led out toward the back of the base plate 1 away from the pedestal 2. Due to the bent lead-out method employed, the moving terminal block 3 and the static terminal block 4 in this structure have a relatively long total length, require a large amount of copper, and have relatively high loop resistance and temperature rise. Furthermore, the moving terminal block 3 and the static terminal block 4 occupy space on the back of the base plate 1, which not only makes the entire frame disconnector larger, but also prevents the frame disconnector from being hung for installation, restricting the ease and flexibility of practical application of the frame disconnector. Utility Model Content

[0003] In view of the above problems, the present invention proposes a frame-type switch electrical appliance with optimized structure.

[0004] The utility model is implemented by the following technical solutions:

[0005] The utility model provides a frame-type switch electrical appliance, comprising an outer shell, an arc extinguishing device and a static end wiring block, wherein the outlet of the arc extinguishing device is fixed to the first side end of the outer shell, and the static end wiring block is led out from the first side end of the outer shell.

[0006] In one embodiment, preferably, the static terminal bank and the arc extinguishing device are arranged side by side on the same first side end portion of the outer shell.

[0007] In one embodiment, preferably, the arc extinguishing device is fixedly connected to the static end wiring bank.

[0008] In one embodiment, preferably, the arc extinguishing device includes an arc extinguishing cover arranged around the outlet, one end of the arc extinguishing cover is fixedly connected to the part of the static end terminal block leading out of the outer shell, and the other end is fixedly connected to the first side end portion of the outer shell.

[0009] In one embodiment, preferably, one end of the arc extinguishing hood close to the static end wiring bank is set to be parallel to the static end wiring bank, thereby forming a first mounting surface of the arc extinguishing hood, and the arc extinguishing hood also includes a second mounting surface vertically connected to the first mounting surface in an L-shape, the first mounting surface is fixedly connected to the static end wiring bank, and the second mounting surface is fixedly fitted to the outer shell.

[0010] In one embodiment, preferably, corresponding threaded connection holes are provided on the first mounting surface and the static end wiring block, corresponding threaded connection holes are provided on the second mounting surface and the outer shell, the first mounting surface and the static end wiring block are threadedly connected and fixed, and the second mounting surface and the outer shell are threadedly connected and fixed.

[0011] In one embodiment, preferably, the outer shell includes a bottom plate and a base that are joined and fixed together, the first side end is formed by splicing the bottom plate and the base together, and the side of the bottom plate relatively away from the base is the back of the frame-type switching electrical appliance, and the back is provided with a hanging structure.

[0012] In one embodiment, preferably, the static terminal block is a flat plate-shaped structure.

[0013] In one embodiment, preferably, a moving end wiring block is further included, with the other side end of the outer shell away from the first side end being the second side end, and the moving end wiring block is a straight plate-shaped structure and is led out from the second side end.

[0014] In one embodiment, preferably, the frame-type switching electrical device is a frame circuit breaker or a frame disconnector.

[0015] The present invention has the following beneficial effects: In the present invention, the static terminal block and the outlet of the arc extinguishing device are both integrated and arranged at the first side end. With such an arrangement, the static terminal block only needs to be provided with a simple straight plate-shaped structure. Compared with the solution in the prior art in which the static terminal block is bent from the back of the base plate to provide the wires, the present invention can reduce the length and copper usage of the static terminal block, and reduce the loop resistance and temperature rise. Furthermore, the dynamic terminal block is led out from the second side end, thereby reducing the length and copper usage of the dynamic terminal block, and reducing the loop resistance and temperature rise. At the same time, the dynamic terminal block and the static terminal block in the present invention do not occupy the space on the back of the base plate, making the switch electrical appliance smaller, and a hanging structure, such as a hanging hole, a hook, etc., can be provided on the back to facilitate the hanging of the switch electrical appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a frame disconnect switch in the prior art;

[0017] Figure 2It is a top view of a frame isolating switch in the prior art;

[0018] Figure 3 2 is a three-dimensional schematic diagram of a frame-type switchgear in an embodiment;

[0019] Figure 4 1 is a front view of the frame-type switchgear in the embodiment;

[0020] Figure 5 is Figure 4 Cross-sectional view at BB;

[0021] Figure 6 This is a structural exploded view of the frame-type switchgear in the embodiment;

[0022] Figure 7 3D is a schematic three-dimensional diagram of the arc extinguishing cover in the embodiment. DETAILED DESCRIPTION

[0023] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0024] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0025] See Figure 3-7 As shown, as a preferred embodiment of the present invention, a frame-type switching device is provided, which can be specifically a frame circuit breaker or a frame disconnector, etc. The frame-type switching device includes an outer shell, which further includes a bottom plate 1 and a base 2. The bottom plate 1 and the base 2 are fixed together to form the outer shell. The outlet of the arc extinguishing device 5 is fixedly connected to the first side end 10 of the outer shell. The frame-type switching device also includes a moving end wiring block 3 and a static end wiring block 4. The moving end wiring block 3 and the static end wiring block 4 extend out of the outer shell. The moving end wiring block 3 is electrically connected to the moving contact, and the static end wiring block 4 is electrically connected to the static contact. The switching device is turned on or off by the contact and separation between the moving and static contacts.

[0026] In this embodiment, the static terminal block 4 is led out from the first side end 10 of the outer shell. That is to say, the static terminal block 4 and the outlet of the arc extinguishing device 5 are both integrated and arranged at the first side end 10 and extend outward. Figure 5As shown, with this configuration, the static terminal block 4 only needs to be a simple flat plate-shaped structure for wiring. Compared to the prior art solution in which the static terminal block 4 bends and extends from the back of the base plate 1, this embodiment can reduce the length of the static terminal block 4 and the amount of copper used, thereby reducing loop resistance and temperature rise. Furthermore, the other side of the outer shell away from the first side end 10 is used as the second side end 20. In this embodiment, the dynamic terminal block 3 is also a flat plate-shaped structure and extends from the second side end 20, thereby reducing the length of the dynamic terminal block 3 and the amount of copper used, thereby reducing loop resistance and temperature rise. At the same time, the side of the base plate 1 relatively far from the base 2 serves as the back 30 of the frame-type switch. Compared to the prior art, the dynamic terminal block 3 and the static terminal block 4 in this embodiment do not occupy space on the back 30, making the switch smaller. In addition, the back 30 can be provided with a hanging structure, such as a hanging hole or hook, to facilitate hanging the switch.

[0027] In this embodiment, the static terminal busbar 4 and the arc extinguishing device 5 are arranged side by side at the first side end portion 10, thereby making the static terminal busbar 4 and the arc extinguishing device 5 very compact and improving the space utilization of the first side end portion 10. In other embodiments, if there is sufficient space at the first side end portion 10, the static terminal busbar 4 and the arc extinguishing device 5 can also be arranged in a cross-like arrangement, a parallel arrangement, or other similar arrangement as needed.

[0028] The arc extinguishing device 5 can be fixed only to the first side end 10 of the outer shell. In this embodiment, the arc extinguishing device 5 is further fixedly connected to the static terminal block 4 to improve the stability of the arc extinguishing device 5. In other embodiments, specifically, the arc extinguishing device 5 includes an arc extinguishing cover 51 arranged around its outlet. One end of the arc extinguishing cover 51 is fixedly connected to the portion of the static terminal block 4 leading out of the outer shell, and the other end is fixedly connected to the first side end 10 of the outer shell. Fixedly connecting the arc extinguishing cover 51 and the static terminal block 4 facilitates the installation and positioning of the arc extinguishing device 5 and the static terminal block 4, and also improves the stability of the arc extinguishing device 5.

[0029] Among them, such as Figure 3 、 7 The end of the arc extinguishing cover 51 close to the static end terminal block 4 is set to be parallel to the static end terminal block 4, thereby forming a first mounting surface 511 of the arc extinguishing cover 51. The arc extinguishing cover 51 also includes a second mounting surface 512 vertically connected to the first mounting surface 511 in an L-shape. The first mounting surface 511 is fixedly connected to the static end terminal block 4, and the second mounting surface 512 is fixedly fitted to the outer shell. This arrangement allows the static end terminal block 4 and the arc extinguishing device 5 to be arranged very compactly in the first side end portion 10 with limited space.

[0030] In this embodiment, corresponding threaded holes are provided on the first mounting surface 511 and the static terminal block 4, and corresponding threaded holes are provided on the second mounting surface 512 and the outer shell. The first mounting surface 511 is threadedly connected and fixed to the static terminal block 4, and the second mounting surface 512 is threadedly connected and fixed to the outer shell. Of course, other means can be used to fix the arc extinguishing cover 51 and the static terminal block 4, but the fixed connection method used in this embodiment is more conducive to the positioning of the arc extinguishing device 5 and the static terminal block 4.

[0031] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the scope of protection of the present invention.

Claims

1. A frame-type switchgear, comprising an outer shell, an arc extinguishing device and a static terminal block, wherein the outlet of the arc extinguishing device is fixed at the first side end of the outer shell, characterized in that: The static terminal row is led out from the first side end of the outer shell.

2. The frame-type switch electrical appliance according to claim 1, characterized in that: The static terminal wiring bank and the arc extinguishing device are arranged side by side on the same first side end portion of the outer shell.

3. The frame-type switch electrical appliance according to claim 2, characterized in that: The arc extinguishing device is fixedly connected to the static end wiring bank.

4. The frame-type switch electrical appliance according to claim 3, characterized in that: The arc extinguishing device comprises an arc extinguishing cover arranged around the outlet, one end of the arc extinguishing cover is fixedly connected to the portion of the static terminal block leading out of the outer shell, and the other end of the arc extinguishing cover is fixedly connected to the first side end of the outer shell.

5. The frame-type switch electrical apparatus according to claim 4, characterized in that: One end of the arc extinguishing hood close to the static end wiring row is arranged to be parallel to and fit with the static end wiring row, thereby forming a first mounting surface of the arc extinguishing hood, and the arc extinguishing hood also includes a second mounting surface vertically connected to the first mounting surface in an L-shape, the first mounting surface is fixedly connected to the static end wiring row, and the second mounting surface is fixedly fitted to the outer shell.

6. The frame-type switch electrical apparatus according to claim 5, characterized in that: The first mounting surface and the static terminal block are provided with corresponding threaded connection holes, the second mounting surface and the outer shell are provided with corresponding threaded connection holes, the first mounting surface and the static terminal block are threadedly connected and fixed, and the second mounting surface and the outer shell are threadedly connected and fixed.

7. The frame-type switch electrical apparatus according to claim 1, characterized in that: The outer shell includes a bottom plate and a base that are joined and fixed together. The first side end is formed by splicing the bottom plate and the base together. The side of the bottom plate that is relatively far away from the base is the back of the frame-type switch electrical appliance, and the back is provided with a hanging structure.

8. The frame-type switch electrical apparatus according to claim 1, characterized in that: The static terminal wiring row is a flat plate-shaped structure.

9. The frame-type switch electrical apparatus according to claim 1, characterized in that: It also includes a moving end wiring row, with the other side end of the outer shell away from the first side end as the second side end, and the moving end wiring row is a straight plate-shaped structure and is led out from the second side end.

10. The frame type switch electrical apparatus according to claim 1, characterized in that: The frame-type switch electrical appliance is a frame circuit breaker or a frame isolating switch.

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