Insert-in vertical and horizontal busbar universal circuit breaker

Abstract

This utility model relates to the field of circuit breakers and discloses a plug-in type universal circuit breaker with vertical and horizontal busbars. It includes a drawer base and a circuit breaker body housed within the drawer base. The drawer base includes a base and eight busbars. A terminal block portion is provided on the side of each busbar away from the base. The midpoint of the terminal block portion is offset along its length away from the center of the busbar. When the eight busbars are horizontal, the midpoints of the four terminal blocks on the left are to the left of the center of the busbar, and the midpoints of the four terminal blocks on the right are to the right of the center of the busbar. When the eight busbars are vertical, the midpoints of the four terminal blocks in the upper row are above the center of the busbar, and the midpoints of the four terminal blocks in the lower row are below the center of the busbar. This utility model reduces the risk of phase-to-phase short circuits and arc discharge by increasing the electrical clearance and creepage distance between the eight busbars.

Description

Technical Field

[0001] This utility model relates to the field of circuit breakers, and in particular to plug-in type vertical and horizontal busbar universal circuit breakers. Background Technology

[0002] In power systems, universal circuit breakers are key circuit protection and control devices, and their performance is crucial to the safe and stable operation of the power system.

[0003] For example, patent CN109148230A discloses a universal circuit breaker. Several first temperature sensors are installed inside the circuit breaker body within a current transformer and directly connected to an intelligent controller to detect the temperature rise of the moving and stationary contacts. Several second temperature sensors are installed outside the circuit breaker body and in contact with the busbars to acquire the temperature rise of the busbars. An insulating connection structure is provided between the second temperature sensors and the busbars. A temperature acquisition module is connected to the second temperature sensors and acquires their detection data in real time. The temperature acquisition module can communicate with the intelligent controller. The circuit breaker is externally equipped with a temperature acquisition module, and temperature sensors are connected to the incoming and outgoing busbars. The real-time temperature of the busbars is collected and transmitted to the temperature acquisition module, which then communicates the real-time temperature to the intelligent controller. This allows for real-time monitoring of the circuit breaker contact temperature and the busbar temperature, effectively ensuring the reliable and safe operation of power distribution lines and equipment. However, there are still many shortcomings: On the one hand, the layout design of the busbars results in small electrical clearances and creepage distances between them. Under high voltage and high current conditions, this can easily lead to phase-to-phase short circuits and arc discharges, seriously threatening the safety of the power system. On the other hand, the busbars are often fixed in a single horizontal or vertical direction. When users need to change the wiring method due to circuit modifications or system upgrades, they usually need to replace the entire circuit breaker or complex wiring components, which is not only cumbersome but also incurs high additional costs. Utility Model Content

[0004] The purpose of this invention is to provide a plug-in type universal circuit breaker for vertical and horizontal busbars to solve the problems existing in the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a plug-in type vertical and horizontal busbar universal circuit breaker, including a drawer base and a circuit breaker body placed in the drawer base. The drawer base includes a base and eight wiring busbars; the eight wiring busbars are arranged in a grid pattern and fixed to the base, with four wiring busbars in the upper row and four in the lower row; each wiring busbar has a terminal block on the side away from the base, and multiple terminal blocks are parallel to each other, with their length direction parallel to the back of the base. The midpoint of each terminal block is offset along its length direction away from the center of the wiring busbar. When the busbars are horizontal, the midpoints of the four terminal blocks on the left are to the left of the center of the busbar, and the midpoints of the four terminal blocks on the right are to the right of the center of the busbar. This increases the electrical clearance and creepage distance between the eight busbars, reducing the risk of phase-to-phase short circuits and arc discharge. When the eight busbars are vertical, the midpoints of the four terminal blocks in the upper row are above the center of the busbar, and the midpoints of the four terminal blocks in the lower row are below the center of the busbar. This increases the electrical clearance and creepage distance between the eight busbars, reducing the risk of phase-to-phase short circuits and arc discharge.

[0006] Furthermore, the base has eight positioning slots corresponding to the busbar on its back, and each positioning slot has four screw holes on its inner wall. The busbar has a connecting plate on its side near the base, into which the eight positioning slots are inserted. The connecting plate has four fastening holes. Screws are passed through the fastening holes and screwed into the screw holes to fix the busbar and the base. The busbar can rotate 90 degrees after the four screws are removed, allowing it to switch between horizontal and vertical orientations. If the user needs to change the wiring method, they only need to rotate the busbar 90 degrees to change the wiring configuration, saving on additional costs associated with replacement.

[0007] Furthermore, the eight positioning slots and the connecting plate portion are square.

[0008] Furthermore, the centers of the four fastening holes are located at four equally divided points on the same circumference, and the lines connecting adjacent center holes form a square.

[0009] Furthermore, the terminal block is provided with three wiring holes.

[0010] Furthermore, the three wiring holes are evenly spaced along the length of the wiring plate.

[0011] Furthermore, the back of the terminal block is provided with a wiring groove, which is arranged along the length of the terminal block. By providing the wiring groove, when wiring, the terminal is inserted into the wiring groove of the busbar, and then the terminal is fixed by screws or other fasteners passing through the wiring hole, making the connection between the terminal and the busbar more stable and secure.

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

[0013] 1. When the eight busbars are horizontal, the midpoints of the four terminal blocks on the left are to the left of the center of the busbar, and the midpoints of the four terminal blocks on the right are to the right of the center of the busbar. When the eight busbars are vertical, the midpoints of the four terminal blocks in the upper row are above the center of the busbar, and the midpoints of the four terminal blocks in the lower row are below the center of the busbar. This increases the electrical clearance and creepage distance between the eight busbars, reducing the risk of phase-to-phase short circuits and arc discharge.

[0014] 2. The busbar can be rotated 90 degrees after removing the four screws, allowing it to switch between horizontal and vertical orientations. If the user needs to change the wiring method, simply rotating the busbar 90 degrees will change the wiring configuration, saving on additional costs associated with replacement.

[0015] 3. By setting a wiring groove, the terminal is inserted into the wiring groove of the busbar during wiring, and then the terminal is fixed by screws or other fasteners passing through the wiring hole, making the connection between the terminal and the busbar more stable and secure. Attached Figure Description

[0016] Figure 1 This is an exploded structural diagram of the present invention;

[0017] Figure 2 This is a side view of the wiring busbar of this utility model when it is vertical;

[0018] Figure 3 This is a side view of the wiring busbar of this utility model when it is horizontal.

[0019] Figure 4 This is a schematic diagram of the wiring busbar of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Drawer base; 11. Base; 12. Busbar; 121. Terminal block; 1211. Wiring hole; 1212. Wiring groove; 122. Connecting plate; 1221. Fastening hole; 2. Circuit breaker body. Detailed Implementation

[0021] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0022] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0023] like Figure 1-4 As shown, the plug-in type vertical and horizontal busbar universal circuit breaker includes a drawer base 1 and a circuit breaker body 2 placed inside the drawer base 1. The drawer base 1 includes a base 11 and eight wiring busbars 12.

[0024] Eight busbars 12 are arranged in a grid pattern and fixed to the base 11, with four busbars 12 in the upper row and four in the lower row.

[0025] The busbar 12 has a terminal block portion 121 on the side away from the base 11. Multiple terminal blocks 121 are parallel to each other, with their length direction parallel to the back of the base 11. The midpoint of each terminal block portion 121 is offset away from the center of the busbar 12 along its length direction. When the eight busbars 12 are horizontal, the midpoints of the four terminal blocks 121 on the left are to the left of the center of the busbar 12, and the midpoints of the four terminal blocks 121 on the right are to the right of the center of the busbar 12. This increases the electrical clearance and creepage distance between the eight busbars 12, reducing the risk of phase-to-phase short circuits and arc discharge. When the eight busbars 12 are vertical, the midpoints of the four terminal blocks 121 in the upper row are above the center of the busbar 12, and the midpoints of the four terminal blocks 121 in the lower row are below the center of the busbar 12. This further increases the electrical clearance and creepage distance between the eight busbars 12, reducing the risk of phase-to-phase short circuits and arc discharge.

[0026] The base 11 has eight positioning slots on its back corresponding to the busbar 12, and each positioning slot has four screw holes on its inner wall. The busbar 12 has a connecting plate 122 on its side near the base 11, which is embedded in each of the eight positioning slots. The connecting plate 122 has four fastening holes 1221. Screws are passed through the fastening holes 1221 and screwed into the screw holes to fix the busbar 12 and the base 11. The busbar 12 can rotate 90 degrees after the four screws are removed, allowing it to switch between horizontal and vertical orientations. If the user needs to change the wiring method, they only need to rotate the busbar 12 90 degrees to change the wiring configuration, saving the additional costs associated with replacement.

[0027] The eight positioning slots and the connecting plate portion 122 are square.

[0028] The centers of the four fastening holes 1221 are located at four equally divided points on the same circumference, and the lines connecting adjacent center points form a square.

[0029] The terminal block 121 has three wiring holes 1211, which are evenly spaced along the length of the terminal block 121. The back of the terminal block 121 has a wiring groove 1212, which is also arranged along the length of the terminal block 121. By providing the wiring groove 1212, when wiring, the terminal is inserted into the wiring groove 1212 of the busbar 12, and then fixed by screws or other fasteners passing through the wiring holes 1211, making the connection between the terminal and the busbar 12 more stable and secure.

[0030] Operating Process: The busbar 12 can be rotated 90 degrees after removing four screws, allowing it to switch between horizontal and vertical orientations. If the user needs to change the wiring method, simply rotating the busbar 12 90 degrees will change the outgoing line configuration, saving on additional costs associated with replacement. When the eight busbars 12 are horizontal, the midpoints of the four left-side terminal blocks 121 are to the left of the center of the busbar 12, and the midpoints of the four right-side terminal blocks 121 are to the right of the center of the busbar 12. When the eight busbars 12 are vertical, the midpoints of the four upper terminal blocks 121 are above the center of the busbar 12, and the midpoints of the four lower terminal blocks 121 are below the center of the busbar 12. This increases the electrical clearance and creepage distance between the eight busbars 12, reducing the risk of phase-to-phase short circuits and arc discharge.

[0031] The above embodiments are only some embodiments of this utility model, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the protection scope of this utility model.

Claims

1. A plug-in type vertical and horizontal busbar universal circuit breaker, comprising a drawer base (1) and a circuit breaker body (2) placed inside the drawer base (1), wherein the drawer base (1) comprises a base (11) and eight busbars (12); the eight busbars (12) are arranged in a grid pattern and fixed to the base (11), with four busbars (12) arranged in the upper row and four in the lower row; the busbars (12) are provided with a terminal block (121) on the side away from the base (11), and the multiple terminal blocks (121) are parallel to each other, with their length direction parallel to the back of the base (11); Its features are, The midpoint of the terminal block (121) is offset away from the center of the busbar (12) along its length. When the eight busbars (12) are horizontal, the midpoints of the four terminal blocks (121) on the left are to the left of the center of the busbar (12), and the midpoints of the four terminal blocks (121) on the right are to the right of the center of the busbar (12). When the eight busbars (12) are vertical, the midpoints of the four terminal blocks (121) in the upper row are above the center of the busbar (12), and the midpoints of the four terminal blocks (121) in the lower row are below the center of the busbar (12).

2. The plug-in type vertical and horizontal busbar universal circuit breaker according to claim 1, characterized in that: The base (11) has eight positioning grooves on its back corresponding to the busbar (12), and each positioning groove has four screw holes on its inner wall. The busbar (12) has a connecting plate (122) on its side near the base (11), which is embedded in the eight positioning grooves. The connecting plate (122) has four fastening holes (1221). The busbar (12) and the base (11) are fixed by screws passing through the fastening holes (1221) and screwing them into the screw holes. The busbar (12) can rotate 90 degrees after the four screws are removed, thus achieving conversion between the horizontal and vertical directions.

3. The plug-in type vertical and horizontal busbar universal circuit breaker according to claim 2, characterized in that: The eight positioning slots and the connecting plate (122) are square.

4. The plug-in type vertical and horizontal busbar universal circuit breaker according to claim 3, characterized in that: The centers of the four fastening holes (1221) are located at four equally divided points on the same circumference, and the lines connecting adjacent center points form a square.

5. The plug-in type vertical and horizontal busbar universal circuit breaker according to claim 1, characterized in that: The terminal block (121) is provided with three wiring holes (1211).

6. The plug-in type vertical and horizontal busbar universal circuit breaker according to claim 1, characterized in that: The three wiring holes (1211) are evenly spaced along the length of the wiring plate (121).

7. The plug-in type vertical and horizontal busbar universal circuit breaker according to claim 1, characterized in that: The back of the terminal block (121) is provided with a wiring groove (1212), which is arranged along the length of the terminal block (121).

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