A capacitor compensation on-off switch convenient to install

Abstract

This application relates to an easy-to-install capacitor-compensated switching switch, belonging to the technical field of switching switches. It includes: a heat sink base; a silicon controlled rectifier (SCR) module disposed on the top of the heat sink base; two mounting feet disposed on the bottom of the heat sink base, each mounting foot having a T-slot, the two T-slots being arranged parallel to each other; a protective bottom shell, the protective bottom shell having a T-shaped guide rail adapted to the T-slots, one end of the T-shaped guide rail having a limiting part; and a limiting plate disposed between the two T-shaped guide rails, one end of the limiting plate extending into the bottom groove of one T-shaped guide rail, and the other end extending into the bottom groove of the other T-shaped guide rail. The limiting plate is fixed to the protective bottom shell by a first fastener. This application utilizes a guide rail structure to improve installation smoothness, while eliminating the need for multiple fasteners, significantly reducing the operational steps required for traditional multi-fastener installations, and thus improving installation efficiency.

Description

Technical Field

[0001] This application relates to the field of switching devices, and more particularly to a capacitor-compensated switching device that is easy to install. Background Technology

[0002] Capacitor compensation switching switches have a wide range of applications. For example, they can be used in low-voltage reactive power compensation devices to quickly switch low-voltage parallel capacitors at zero crossing, achieving no inrush current, no sparks, and no noise during operation.

[0003] Chinese patent CN101667733B discloses a capacitor compensation switching switch, which includes a heat sink base, a silicon controlled rectifier module and a circuit board. The heat sink base includes a connecting bracket and two mounting feet. The bottom surface of each mounting foot is provided with a fourth T-slot, and a fastener is configured in the fourth T-slot for fixing the device.

[0004] Regarding the above technical solution, the inventors believe that when using the aforementioned switching switch, a protective housing is usually required. When installing the switching switch inside the protective housing, the heat sink base is fixed to the protective housing using fasteners in the fourth T-slot. To ensure installation stability, at least two fasteners are needed in each T-slot for double locking. While this multi-point fixing method ensures stable installation, it significantly increases the number of fasteners required, leading to complex installation procedures, reduced efficiency, and hindering rapid deployment on-site. Utility Model Content

[0005] To improve installation efficiency, this application provides a capacitor compensation switching switch that is easy to install.

[0006] This application provides a capacitor compensation switching switch that is easy to install, employing the following technical solution:

[0007] An easy-to-install capacitor-compensated switching switch includes:

[0008] Cooling pad;

[0009] The thyristor module is located on top of the heat sink base;

[0010] Two mounting feet are provided at the bottom of the heat dissipation base, and the mounting feet are provided with T-slots, with the two T-slots arranged in parallel;

[0011] A protective bottom shell is provided with a T-shaped guide rail that is adapted to the T-shaped groove, and a limiting part is provided at one end of the T-shaped guide rail;

[0012] A limiting plate is disposed between the two T-shaped guide rails, with one end of the limiting plate extending into the bottom groove of one of the T-shaped guide rails and the other end extending into the bottom groove of the other T-shaped guide rail. The limiting plate is fixed to the protective bottom shell by a first fastener.

[0013] By adopting the above technical solution, the sliding fit structure of the T-slot and T-rail enables rapid positioning and installation of the heat dissipation base and the protective shell. The parallel arrangement of the T-rail and T-slot ensures the uniqueness of the assembly direction and avoids misalignment. Secondly, the combination of the limiting part and the limiting plate forms a two-way fixing mechanism. Based on the unilateral limiting of the T-rail, the limiting plate is fixed by the first fastener, ultimately fixing the heat dissipation base inside the protective shell. During installation, the guide rail structure improves the smoothness of installation and eliminates the need for multiple fasteners, significantly reducing the operation steps required for traditional multi-fastener installation and improving installation efficiency.

[0014] Optionally, the mounting foot is located between the corresponding limiting part and the limiting plate, and the limiting plate has a guide slope on the side near the limiting part.

[0015] By adopting the above technical solution, the guide slope helps to guide the limiting plate to be accurately embedded in the bottom groove of the T-shaped guide rail, reducing the accuracy requirements for manual alignment.

[0016] Optionally, a protective cover is also provided on top of the protective bottom shell, the protective cover being snapped into the protective bottom shell.

[0017] By adopting the above technical solution, the thyristor module is protected by a protective cover. At the same time, the protective cover and the protective bottom shell are snapped together to facilitate quick opening and closing during later maintenance.

[0018] Optionally, a cooling fan is provided at one end of the heat sink base.

[0019] By adopting the above technical solution, the combination of cooling fan and heat sink base forms an active heat dissipation system, which accelerates the heat dissipation of the thyristor module through forced convection, effectively solving the problem of local temperature rise under high load conditions.

[0020] Optionally, the protective cover is provided with a connecting part, which is fixed to the cooling fan by a second fastener.

[0021] By adopting the above technical solution, the combination of the connecting part and the second fastener achieves the stability of the connection between the cooling fan and the protective cover. At the same time, since the protective cover and the protective bottom shell are snapped together, the cooling fan and the cooling base are fixed, thereby achieving multi-level fixation between the cooling base, the cooling fan, the protective bottom shell and the protective cover, ensuring the stability of the overall installation structure.

[0022] Optionally, the protective cover is provided with heat dissipation holes.

[0023] By adopting the above technical solution, the heat dissipation holes form a passive heat dissipation channel on the protective cover, enabling the protective cover to have a certain protective effect while maintaining a certain heat dissipation capacity.

[0024] Optionally, the protective bottom shell is provided with a waist-shaped mounting hole.

[0025] By adopting the above technical solution, the waist-shaped mounting hole provides the ability to finely adjust the installation position of the protective bottom shell, adapting to the installation space limitations of different specifications of distribution cabinets.

[0026] In summary, this application includes the following beneficial technical effects:

[0027] 1. The sliding fit structure of the T-slot and T-rail enables rapid positioning and installation of the heat sink base and the protective shell. The parallel arrangement of the T-rail and T-slot ensures the uniqueness of the assembly direction and avoids misalignment. Secondly, the combination of the limiting part and the limiting plate forms a two-way fixing mechanism. Based on the unilateral limiting of the T-rail, the limiting plate is fixed by the first fastener, ultimately fixing the heat sink base inside the protective shell. During installation, the guide rail structure improves the smoothness of installation and eliminates the need for multiple fasteners, significantly reducing the operation steps required for traditional multi-fastener installation and improving installation efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a capacitor compensation switching switch that is easy to install, according to an embodiment of this application.

[0029] Figure 2 This is a schematic diagram illustrating the installation structure of the heat dissipation base and the protective shell in the embodiments of this application.

[0030] Figure 3 This is an exploded view showing the internal structure of the protective bottom shell in the embodiments of this application.

[0031] Figure 4 This is a schematic diagram illustrating the structure of the limiting plate in the embodiments of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Heat sink base; 11. Mounting foot; 111. T-slot; 2. Protective bottom shell; 21. T-shaped guide rail; 211. Limiting part; 22. Waist-shaped mounting hole; 3. Protective cover; 31. Heat dissipation hole; 32. Connecting part; 4. SCR module; 5. Limiting plate; 51. Guide slope; 6. First fastener; 7. Cooling fan; 8. Second fastener. Detailed Implementation

[0033] The following combination Figures 1-4 This application will be described in further detail below.

[0034] Example:

[0035] This application discloses a capacitor compensation switching switch that is easy to install. (Refer to...) Figure 1 and Figure 2 A capacitor compensation switching switch that is easy to install includes a heat dissipation base 1, a protective bottom shell 2 and a protective cover shell 3. The heat dissipation base 1 is located in the shell structure formed by the protective bottom shell 2 and the protective cover shell 3. A thyristor module 4 is fixed on the top of the heat dissipation base 1.

[0036] Reference Figure 2 and Figure 3 The bottom of the heat dissipation base 1 has two integrally formed mounting feet 11, each with a T-slot 111 at its bottom, and the two T-slots 111 are arranged in parallel. The inner bottom wall of the protective base 2 has integrally formed T-shaped guide rails 21 that fit the T-slots 111, and a limiting part 211 is fixed to the same end of each of the two T-shaped guide rails 21. The end of the mounting foot 11 away from the limiting part 211 is limited by a limiting plate 5, which is located between the two T-shaped guide rails 21. One end of the limiting plate 5 extends into the bottom groove of one T-shaped guide rail 21, and the other end extends into the bottom groove of the other T-shaped guide rail 21. The limiting plate 5 is fixed to the protective base 2 by a first fastener 6.

[0037] Reference Figure 3 and Figure 4 The limiting plate 5 has a guide slope 51 on the side near the limiting part 211. The guide slope 51 helps to guide the limiting plate 5 to be accurately embedded into the bottom groove of the T-shaped guide rail 21, reducing the accuracy requirements for manual alignment. During installation, first, align the T-shaped groove 111 with the end of the T-shaped guide rail 21 away from the limiting part 211 and insert it. Then, push the heat dissipation base 1 along the T-shaped guide rail 21 until one end of the mounting foot 11 abuts against the limiting part 211. Next, embed the limiting plate 5 into the bottom groove of the T-shaped guide rail 21 and push the limiting plate 5 until it abuts against the other end of the mounting foot 11. Finally, fix the limiting plate 5 with the first fastener 6, thereby fixing the heat dissipation base 1 to the protective base shell 2.

[0038] Reference Figure 1 To facilitate quick opening and closing during later maintenance, the protective cover 3 is snapped onto the top of the protective bottom cover 2; multiple heat dissipation holes 31 are provided on the side wall of the protective cover 3, forming a passive heat dissipation channel on the protective cover 3 through the heat dissipation holes 31, so that the protective cover 3 has a certain protective effect while maintaining a certain heat dissipation capacity.

[0039] Reference Figure 1 and Figure 2To further improve heat dissipation performance, a cooling fan 7 is fixedly installed at one end of the heat dissipation base 1. The combination of the cooling fan 7 and the heat dissipation base 1 forms an active heat dissipation system, which accelerates the heat dissipation of the thyristor module 4 through forced convection, effectively solving the problem of local temperature rise under high load conditions.

[0040] Reference Figure 1 A connecting part 32 is fixedly connected to the inner side of the protective cover 3, and the connecting part 32 is fixed to the cooling fan 7 by the second fastener 8. In this way, the combination of the connecting part 32 and the second fastener 8 ensures the stability of the connection between the cooling fan 7 and the protective cover 3. At the same time, since the protective cover 3 is snapped into the protective bottom cover 2, the cooling fan 7 is fixed to the heat dissipation base 1, thereby realizing multi-level fixation between the heat dissipation base 1, the cooling fan 7, the protective bottom cover 2 and the protective cover 3, ensuring the stability of the overall installation structure.

[0041] Reference Figure 1 The protective base 2 has a waist-shaped mounting hole 22, the length of which is the same as the length of the protective base 2. This waist-shaped mounting hole 22 provides the ability to fine-tune the mounting position of the protective base 2, which is beneficial for adapting to the installation space limitations of different sized distribution cabinets.

[0042] The implementation principle of the easy-to-install capacitor compensation switching switch in this application embodiment is as follows: During installation, firstly, the T-shaped slot 111 is aligned with the end of the T-shaped guide rail 21 away from the limiting part 211 and inserted. Then, the heat dissipation base 1 is pushed along the T-shaped guide rail 21 until one end of the mounting foot 11 abuts against the limiting part 211. Next, the limiting plate 5 is embedded into the bottom groove of the T-shaped guide rail 21 and pushed until the limiting plate 5 abuts against the other end of the mounting foot 11. Finally, the limiting plate 5 is fixed by the first fastener 6, thereby fixing the heat dissipation base 1 and the protective bottom shell 2.

[0043] This application achieves rapid positioning and installation of the heat dissipation base 1 and the protective shell 2 through the sliding fit structure of the T-slot 111 and the T-slot 21. The parallel arrangement of the T-slot 21 and the T-slot 111 ensures the uniqueness of the assembly direction and avoids misalignment during installation. Secondly, the combination of the limiting part 211 and the limiting plate 5 forms a two-way fixing mechanism. Based on the unilateral limiting of the T-slot 21, the limiting plate 5 is fixed by the first fastener 6, ultimately achieving the fixation of the heat dissipation base 1 within the protective shell 2. During installation, the guide rail structure improves the smoothness of installation, and at the same time, multiple fasteners are not required, greatly reducing the operation steps required for traditional multi-fastener installation and improving installation efficiency.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A capacitor-compensated switching switch that is easy to install, characterized in that, include: Heat dissipation base (1); The thyristor module (4) is located on top of the heat sink (1); Two mounting feet (11) are provided at the bottom of the heat dissipation base (1), and the mounting feet (11) are provided with T-slots (111), and the two T-slots (111) are arranged in parallel. A protective bottom shell (2) is provided with a T-shaped guide rail (21) adapted to the T-shaped groove (111), and a limiting part (211) is provided at one end of the T-shaped guide rail (21); A limiting plate (5) is provided between the two T-shaped guide rails (21), and one end of the limiting plate (5) extends into the bottom groove of one of the T-shaped guide rails (21), and the other end extends into the bottom groove of the other T-shaped guide rail (21). The limiting plate (5) is fixed to the protective bottom shell (2) by the first fastener (6).

2. The capacitor compensation switching switch that is easy to install according to claim 1, characterized in that: The mounting foot (11) is located between the corresponding limiting part (211) and the limiting plate (5), and the limiting plate (5) has a guide slope (51) on the side near the limiting part (211).

3. The capacitor compensation switching switch that is easy to install according to claim 1, characterized in that: It also includes a protective cover (3) located on top of the protective bottom shell (2), which is snapped into the protective bottom shell (2).

4. The capacitor compensation switching switch that is easy to install according to claim 3, characterized in that: A cooling fan (7) is provided at one end of the heat sink base (1).

5. A capacitor compensation switching switch that is easy to install according to claim 4, characterized in that: The protective cover (3) is provided with a connecting part (32), which is fixed to the cooling fan (7) by a second fastener (8).

6. The capacitor compensation switching switch that is easy to install according to claim 3, characterized in that: The protective cover (3) is provided with heat dissipation holes (31).

7. The capacitor compensation switching switch that is easy to install according to claim 1, characterized in that: The protective bottom shell (2) is provided with a waist-shaped mounting hole (22).

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