CN-224217937-U - H-type photovoltaic low-voltage bus cabinet

CN224217937UCN 224217937 UCN224217937 UCN 224217937UCN-224217937-U

Abstract

The utility model discloses an H-shaped photovoltaic low-voltage bus cabinet which comprises a connecting cabinet body and a frame cabinet body, wherein the connecting cabinet body is communicated with the frame cabinet body, a heat dissipation device is arranged on the connecting cabinet body, an operation surface is arranged away from the connecting cabinet body, a maintenance surface is arranged close to the connecting cabinet body, a frame is provided with a frame circuit breaker, the frame circuit breaker is connected with a first bus bar copper group, the operation surface is provided with a plastic shell circuit breaker module, the plastic shell circuit breaker module is connected with a second bus bar copper, the tail ends of a plurality of second bus bars copper are respectively connected with the first bus bar copper, and the first bus bar copper group and the second bus bar copper group are both arranged close to the maintenance surface of the frame cabinet body. A maintenance channel with front and rear ends communicated is arranged between the two maintenance surfaces. The first bus copper bar group and the second bus copper bar group are close to the maintenance surface, so that heat can be prevented from being directly radiated to the operation surface, normal operation of the bus cabinet is avoided, and the problems of difficult maintenance and slow heat dissipation caused by narrow maintenance space of the traditional bus cabinet are solved.

Inventors

ZHAO NANNAN
GUO YANPING
WU YUHUI
LI JIANFENG
ZHAO ZHENWEI
BAI JIANHAO
WU HAIFAN
CHEN XING
SHEN MINGTAO
CHEN XIAOFEN

Assignees

佛山市顺德区伊戈尔电力科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250427

Claims (8)

1. The H-shaped photovoltaic low-voltage confluence cabinet is characterized by comprising a connection cabinet body and a frame cabinet body, wherein the frame cabinet body which is parallel to each other is arranged at the left end part and the right end part of the connection cabinet body, the connection cabinet body is communicated with the frame cabinet body, and the connection cabinet body is provided with a heat dissipation device; The frame cabinet body is provided with a molded case circuit breaker module, a frame circuit breaker, a first busbar copper set and a second busbar copper set, wherein the length direction of the first busbar copper set is a vertical direction, and the length direction of the second busbar copper set is a front-back direction; The top of the operation surface of the frame cabinet body is provided with a frame breaker, the input end of the frame breaker is connected with the top of the first busbar copper set, the operation surface of the frame cabinet body is provided with a plurality of groups of plastic shell breaker modules, the plastic shell breaker modules are all positioned below the frame breaker and are arranged along the vertical direction, the plastic shell breaker modules are connected with the second busbar copper sets, the plastic shell breaker modules are in one-to-one correspondence with the second busbar copper sets, and the tail ends of the second busbar copper sets are respectively connected with the first busbar copper sets; The first bus copper bar group and the second bus copper bar group are both close to the maintenance surface of the frame cabinet body.
2. The H-type photovoltaic low-voltage junction box according to claim 1, wherein said molded case circuit breaker module comprises a plurality of three-phase molded case circuit breakers arranged in a front-rear direction; The tops of the three-phase plastic shell circuit breakers are respectively connected with the second busbar copper sets through the first connecting copper sets, the bottoms of the three-phase plastic shell circuit breakers are connected with insulators through the second connecting copper sets, and the insulators are fixedly arranged on the maintenance surface of the frame cabinet body; Adjacent two insulators are arranged in a staggered mode.
3. The H-type photovoltaic low-voltage bus-bar cabinet according to claim 2, wherein the first connection copper bar group comprises three 匚 -shaped connecting pieces, the opening direction of the 匚 -shaped connecting pieces faces downwards, one end of each 匚 -shaped connecting piece is connected with the top of the three-phase molded case circuit breaker, and the other end of each 匚 -shaped connecting piece is connected with the top of the second bus-bar group.
4. The H-type photovoltaic low-voltage bus cabinet according to claim 1, wherein the second bus bar group comprises three second bus bar copper bars, the three second bus bar copper bars are arranged along the left-right direction, the first bus bar copper group comprises three first bus bar copper bars, and the three first bus bar copper bars are arranged along the front-back direction; The three first bus copper bars and the three second bus copper bars are in one-to-one correspondence.
5. The H-type photovoltaic low-voltage bus cabinet according to claim 1, wherein the connecting cabinet body is provided with an output copper bar, the output copper bar comprises a first connecting portion and a second connecting portion which are perpendicular to each other, the length direction of the first connecting portion is the left-right direction, the length direction of the second connecting portion is the front-back direction, the first connecting portion is connected with the frame circuit breaker, and the front end of the second connecting portion penetrates out of the front side wall of the connecting cabinet body.
6. The H-type photovoltaic low-voltage bus cabinet according to claim 1, wherein a plurality of heat dissipation grids are arranged on the rear side wall of the frame cabinet body, and the heat dissipation grids are arranged in a matrix.
7. The H-type photovoltaic low-voltage junction box according to claim 1, wherein the heat dissipation device is a centrifugal fan and is arranged at the rear side of the connection box body.
8. The H-type photovoltaic low-voltage busbar cabinet of claim 4, wherein an input copper bar set is arranged between the frame circuit breaker and the first busbar copper bar set, the input copper bar set comprises three input copper bars, and the input copper bars are obliquely connected with the frame circuit breaker and the first busbar copper bars.

Description

H-type photovoltaic low-voltage bus cabinet Technical Field The utility model relates to the technical field of bus cabinets, in particular to an H-type photovoltaic low-voltage bus cabinet. Background In modern power systems, the bus-bar cabinets serve as core means for power distribution and protection, the performance and reliability of which are directly related to the stable operation of the whole power network. In order to meet the requirement of more branch accesses, conventional designs tend to arrange copper bar groups and circuit breakers as much as possible in a limited space, in a staggered manner, in order to achieve maximum expansion of the branch capacity in terms of physical dimensions. However, the extreme compression of the interior space directly results in a narrowing of the maintenance space. When a technician performs routine maintenance, fault diagnosis or component replacement, the technician often faces the dilemma of insufficient operation space, has to take an irregular posture or use special tools, increases the working difficulty, prolongs the maintenance time and reduces the working efficiency. More seriously, the compact layout limits air circulation, so that heat is accumulated in the bus cabinet and is difficult to effectively dissipate, further, the thermal load of equipment is increased, the working performance and the service life of elements are influenced, even overheat faults can be caused, and the safety of the whole power system is threatened. Disclosure of utility model Aiming at the defects, the utility model provides an H-type photovoltaic low-voltage bus-bar cabinet, which solves the problems of difficult maintenance and slow heat dissipation caused by the narrow maintenance space of the traditional bus-bar cabinet. To achieve the purpose, the utility model adopts the following technical scheme: The H-shaped photovoltaic low-voltage confluence cabinet comprises a connection cabinet body and a frame cabinet body, wherein the frame cabinet body which is parallel to each other is arranged at the left end part and the right end part of the connection cabinet body, the connection cabinet body is communicated with the frame cabinet body, and the connection cabinet body is provided with a heat dissipation device; The frame cabinet body is provided with a molded case circuit breaker module, a frame circuit breaker, a first busbar copper set and a second busbar copper set, wherein the length direction of the first busbar copper set is a vertical direction, and the length direction of the second busbar copper set is a front-back direction; The top of the operation surface of the frame cabinet body is provided with a frame breaker, the input end of the frame breaker is connected with the top of the first busbar copper set, the operation surface of the frame cabinet body is provided with a plurality of groups of plastic shell breaker modules, the plastic shell breaker modules are all positioned below the frame breaker and are arranged along the vertical direction, the plastic shell breaker modules are connected with the second busbar copper sets, the plastic shell breaker modules are in one-to-one correspondence with the second busbar copper sets, and the tail ends of the second busbar copper sets are respectively connected with the first busbar copper sets; The first bus copper bar group and the second bus copper bar group are both close to the maintenance surface of the frame cabinet body. The plastic shell circuit breaker module comprises a plurality of three-phase plastic shell circuit breakers, and the three-phase plastic shell circuit breakers are arranged along the front-back direction; The tops of the three-phase plastic shell circuit breakers are respectively connected with the second busbar copper sets through the first connecting copper sets, the bottoms of the three-phase plastic shell circuit breakers are connected with insulators through the second connecting copper sets, and the insulators are fixedly arranged on the maintenance surface of the frame cabinet body; Adjacent two insulators are arranged in a staggered mode. The second busbar copper sets comprise three second busbar copper sets, and the three second busbar copper sets are arranged along the left-right direction; the first busbar copper set comprises three first busbar copper bars, and the three first busbar copper bars are arranged along the front-back direction; The three first bus copper bars and the three second bus copper bars are in one-to-one correspondence. The connecting cabinet body is provided with output copper bar, output copper bar includes mutually perpendicular's first connecting portion and second connecting portion, the length direction of first connecting portion is left and right directions, the length direction of second connecting portion is fore-and-aft direction, first connecting portion with frame circuit breaker is connected, the front end of second connecting portion wears