Connecting bar structure of small-sized switch cabinet
By designing a small switch cabinet connection arrangement, the upper end is drawn out toward the cabinet and opened in a dislocation, the problem of reducing the width and size of the small switch cabinet has higher requirements on the copper discharge design scheme while maintaining the same current carrying capacity of the main circuit, achieving better hot air circulation and heat dissipation.
Patent Information
- Application Number
- CN202421523818.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-30
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-30
AI Technical Summary
While keeping the current carrying capacity of the main circuit the small switch cabinet is the same, the width and size are reduced, resulting in higher requirements for the copper row design scheme. In the prior art, the three-phase side-by-side arrangement increases the phase-to-phase influence of dynamic and thermal stability, and the three-phase connecting row adopts a highly disassembled solution, which is costly.
A small switch cabinet connection row structure is designed, by leading the upper end to the rear of the cabinet and dislocating front and back with the upper end row B, the upper end row A and the upper end row C, the heat dissipation space between the connecting rows is increased and the heat dissipation area of the copper discharge is increased.
It improves the circulation effect of hot air, and the rise of heat dissipation air flow is smoother, which improves heat dissipation and reduces costs.
Smart Images
Figure CN222802388U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of switch cabinets, and in particular to a connection bar structure of a small switch cabinet. Background Art
[0002] The miniaturized circuit breaker switch cabinet (cabinet width 500) is smaller in width than the conventional switch cabinet (cabinet width 900 or 700). When the main circuit current carrying capacity is the same, higher requirements are placed on the copper busbar design of the switch cabinet.
[0003] See also Figure 1 In the related art, the upper end row of the switch cabinet copper bar structure has three phases arranged side by side, which extend vertically from the contact position of the circuit breaker to the outside of the cabinet, and current transformers are installed in the middle of the three-phase upper end row; the three phases of the upper end row are arranged side by side, which increases the phase-to-phase influence of dynamic thermal stability;
[0004] The lower contact of the circuit breaker is connected to the circuit row through a connecting row, wherein the lower contact A is connected to the circuit row A through 1 section of connecting row, the lower contact B is connected to the circuit row B through 2 sections of connecting row, and the lower contact C is connected to the circuit row C through 2 sections of connecting row. The three-phase connecting row is arranged in a height staggered scheme; in this way, the three-phase connecting row has different heights, and the construction cost is high. Summary of the invention
[0005] In view of this, the present application provides a small switch cabinet connection row structure, which can improve the effect of hot air circulation.
[0006] In order to achieve the above objectives, this application is implemented through the following technical solutions:
[0007] A small switch cabinet connection row structure, characterized in that: it includes a circuit breaker and an upper connection row, the circuit breaker has an upper contact A, an upper contact C, and an upper contact B located between the upper contact A and the upper contact C; the upper connection row includes an upper end row A, an upper end row B and an upper end row C respectively connected to the upper contact A, the upper contact B and the upper contact C, the upper end row A and the upper end row C extend upward, and at least one section of the upper end row B extends to the rear side of the cabinet, so that the upper end row B is offset from the upper end row A and the upper end row C front and back.
[0008] The above-mentioned small switch cabinet connecting row structure of the present application can be staggered with the upper row B, the upper row A and the upper row C front and back after the upper row is led out to the rear of the cabinet, thereby increasing the heat dissipation circulation space between the connecting rows; making the heat dissipation airflow rise more smoothly.
[0009] In some embodiments, the upper row B includes a first row segment, a second row segment, a third row segment and a fourth row segment connected in sequence, the first row segment includes four wire row portions connected to the upper contact B and extending toward the rear of the cabinet, the four wire row portions are spaced apart from each other, and the two outermost wire row portions are respectively bent outward to form a convex portion, the second row segment is connected to one end of the first row segment and extends upward, so that the second row segment is offset front and back from the upper row A and the upper row C, the third row segment is connected to the upper end of the second row segment and extends toward the front of the cabinet to the front side of the upper row A and the upper row C, the fourth row segment is connected to one end of the third row segment and extends upward, and the fourth row segment is also offset front and back from the upper row A and the upper row C.
[0010] The first row of sections changes the original two rows into four rows, and convex parts are formed on the first row of sections on the left and right sides, which increases the heat dissipation area of the copper bar; the second row of sections is vertically upward, the third row of sections is horizontally forward, and the fourth row of sections is vertically upward and led out of the cabinet. The second and fourth rows are staggered front and back with the upper row A and the upper row C, which can further increase the heat dissipation space and improve the heat dissipation.
[0011] In some embodiments, the lower end of the second row of segments is bent toward a side close to the upper row A. This arrangement is to reserve a secondary wiring space for the current transformer at the loop row C.
[0012] In some embodiments, it also includes a lower connecting row, and the circuit breaker also has lower contacts A, B and C respectively located below the upper contacts A, B and C, and the lower connecting row includes lower end row A, lower end row B and lower end row C respectively connected to the lower contacts A, B and C, and the lower end row A, B and C are all led out to the rear of the cabinet by corresponding terminals and then bent to the left, so that the three lower end rows form a front-to-back nested structure, and each lower end row is on the same horizontal plane, and the small switch cabinet connection row structure also includes three circuit rows respectively connected to the lower end row A, B and C, and the specifications of the three circuit rows are consistent.
[0013] The horizontal busbar of the switch cabinet is located at the rear of the upper part of the cabinet and is arranged horizontally from left to right. The circuit busbar is connected to the horizontal busbar and extends downward. The length of the three-phase circuit busbar is consistent with the opening size. The two ends of the three-phase lower end busbar are connected to the lower contact and the circuit busbar. When the electrical clearance is met, the three-phase lower end busbar is set on the same horizontal plane. The circuit busbar of the same specification can be used, and the use of the circuit busbar and the lower end busbar can be reduced.
[0014] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:
[0015] 1. The present application discloses a connecting row structure for a small switch cabinet. After the upper row is led out to the rear of the cabinet, it can be staggered with the upper row B, the upper row A and the upper row C front and back, thereby increasing the heat dissipation circulation space between the connecting rows; making the heat dissipation airflow rise more smoothly.
[0016] 2. In this application, the first row of segments changes the original two rows into four rows, and convex portions are formed on the first row of segments on the left and right sides, thereby increasing the heat dissipation area of the copper bar; the second row of segments is vertically upward, the third row of segments is horizontally forward, and the fourth row of segments is vertically upward and led out of the cabinet, wherein the second row and the fourth row of segments are staggered front and back with the upper row A and the upper row C, which can further increase the heat dissipation space and improve the heat dissipation.
[0017] 3. In this application, the horizontal busbar of the switch cabinet is located at the upper rear of the cabinet, and is arranged horizontally from left to right. The circuit busbar is connected to the horizontal busbar and extends downward. The length and opening size of the three-phase circuit busbar are consistent. The two ends of the three-phase lower end bar are connected to the lower contact and the circuit busbar. When the electrical clearance is met, the three-phase lower end bar is set on the same horizontal plane, and the circuit busbar of the same specification can be used, and the amount of the circuit busbar and the lower end bar can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;
[0019] Figure 2 This is a cross-sectional view of an embodiment of the present application. Figure 1 ;
[0020] Figure 3 This is a front view of an embodiment of the present application;
[0021] Figure 4 This is a cross-sectional view of an embodiment of the present application. Figure 2 ;
[0022] Explanation of reference numerals: 1. Circuit breaker; 11. Upper contact A; 12. Upper contact B; 13. Upper contact C; 14. Lower contact A; 15. Lower contact B; 16. Lower contact C; 2. Upper row A; 3. Upper row B; 31. First row section; 311. Line row section; 312. Protrusion; 32. Second row section; 33. Third row section; 34. Fourth row section; 4. Upper row C; 5. Lower row A; 6. Lower row B; 7. Lower row C; 8. Circuit row; 9. Horizontal busbar; 10. Transformer; DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The terms used in the implementation method of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.
[0024] See also Figures 1 to 4 The embodiment of the present application provides a small switch cabinet connection row structure, including a circuit breaker 1 and an upper connection row, wherein the circuit breaker 1 has an upper contact A11, an upper contact C13, and an upper contact B12 located between the upper contact A11 and the upper contact C13; the upper connection row includes an upper end row A2, an upper end row B3 and an upper end row C4 respectively connected to the upper contact A11, the upper contact B12 and the upper contact C13, the upper end row A2 and the upper end row C4 extend upward, and at least one section of the upper end row B3 extends to the rear side of the cabinet, so that the upper end row B3 is offset from the upper end row A2 and the upper end row C4 front and back.
[0025] The connecting row structure of the small switch cabinet can be staggered with the upper row B3, the upper row A2 and the upper row C4 after the upper row is led out to the rear of the cabinet, thereby increasing the heat dissipation circulation space between the connecting rows and making the heat dissipation airflow rise more smoothly.
[0026] In some embodiments, the upper end row B3 includes a first row segment 31, a second row segment 32, a third row segment 33 and a fourth row segment 34 connected in sequence, the first row segment 31 includes four wire row portions 311 connected to the upper contact B12 and extending toward the rear of the cabinet, the four wire row portions 311 are spaced apart from each other, the two outermost wire row portions 311 are bent outward to form a convex portion 312, the second row segment 32 is connected to one end of the first row segment 31 and extends upward, so that the second row segment 32 is offset from the upper end row A2 and the upper end row C4 front to back, the third row segment 33 is connected to the upper end of the second row segment 32 and extends toward the front of the cabinet to the front side of the upper end row A2 and the upper end row C4, the fourth row segment 34 is connected to one end of the third row segment 33 and extends upward, and the fourth row segment 34 is also offset from the upper end row A2 and the upper end row C4 front to back.
[0027] The first row of segments 31 changes the original two rows into four rows, and the first row of segments 31 on the left and right sides are formed with convex parts 312, which increases the heat dissipation area of the copper bar; the second row of segments 32 is vertically upward, the third row of segments 33 is horizontally forward, and the fourth row of segments 34 is vertically upward and led out of the cabinet, wherein the second row of segments 32 and the fourth row of segments 34 are staggered front and back with the upper end row A2 and the upper end row C4, which can further increase the heat dissipation space and improve the heat dissipation performance.
[0028] In some embodiments, the lower end of the second row segment 32 is bent toward the side close to the upper row A2 to reserve secondary wiring space for the current transformer 10 at the loop row 8C.
[0029] In some embodiments, it also includes a lower connecting row, and the circuit breaker 1 also has a lower contact A14, a lower contact B15 and a lower contact C16 respectively located below the upper contact A11, the upper contact B12 and the upper contact C13, and the lower connecting row includes a lower end row A5, a lower end row B6 and a lower end row C7 respectively connected to the lower contact A14, the lower contact B15 and the lower contact C16, and the lower end row A5, the lower end row B6 and the lower end row C7 are all bent to the left after being led out to the rear of the cabinet by the corresponding terminals, so that the three lower end rows form a front-to-back nested structure, and each lower end row is on the same horizontal plane, and the small switch cabinet connection row structure also includes three circuit rows 8 respectively connected to the lower end row A5, the lower end row B6 and the lower end row C7, and the specifications of the three circuit rows 8 are consistent.
[0030] The horizontal busbar 9 of the switch cabinet is located at the rear of the upper part of the cabinet and is arranged horizontally from left to right. The circuit bar 8 is connected to the horizontal busbar 9 and extends downward. The length of the three-phase circuit bar 8 is consistent with the opening size. The two ends of the three-phase lower end bar are connected to the lower contact and the circuit bar 8. When the electrical clearance is met, the three-phase lower end bar is set on the same horizontal plane, and the circuit bar 8 of the same specification can be used, and the amount of the circuit bar 8 and the lower end bar can be reduced.
[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A small switch cabinet connection row structure, characterized in that: The circuit breaker comprises a circuit breaker and an upper connection row, wherein the circuit breaker has an upper contact A, an upper contact C, and an upper contact B located between the upper contact A and the upper contact C; the upper connection row comprises an upper end row A, an upper end row B, and an upper end row C respectively connected to the upper contact A, the upper contact B, and the upper contact C, the upper end row A and the upper end row C extend upward, and at least one section of the upper end row B extends to the rear side of the cabinet, so that the upper end row B is offset from the upper end row A and the upper end row C in front and back; The upper row B includes a first row segment, a second row segment, a third row segment and a fourth row segment connected in sequence, the first row segment includes four wire row portions connected to the upper contact B and extending toward the rear of the cabinet, the four wire row portions are spaced apart from each other, the two outermost wire row portions are respectively bent outward to form convex portions, the second row segment is connected to one end of the first row segment and extends upward, so that the second row segment is offset front and back from the upper row A and the upper row C, the third row segment is connected to the upper end of the second row segment and extends toward the front of the cabinet to the front side of the upper row A and the upper row C, the fourth row segment is connected to one end of the third row segment and extends upward, and the fourth row segment is also offset front and back from the upper row A and the upper row C.
2. A small switch cabinet connection row structure according to claim 1, characterized in that: The lower end of the second row segment is bent toward a side close to the upper row A.
3. A small switch cabinet connection row structure according to claim 1, characterized in that: It also includes a lower connecting row, and the circuit breaker also has lower contacts A, lower contacts B and lower contacts C respectively located below the upper contacts A, upper contacts B and upper contacts C. The lower connecting row includes a lower end row A, a lower end row B and a lower end row C respectively connected to the lower contacts A, lower contacts B and lower contacts C. The lower end row A, the lower end row B and the lower end row C are all bent to the left after being led out to the rear of the cabinet by corresponding terminals, so that the three lower end rows form a front-to-back nested structure, and each lower end row is on the same horizontal plane. The small switch cabinet connection row structure also includes three circuit rows respectively connected to the lower end row A, the lower end row B and the lower end row C, and the specifications of the three circuit rows are consistent.