A comprehensive distribution box

Abstract

The present invention relates to a comprehensive distribution box, which includes a cabinet body. A three-phase power main line and a three-phase unbalance adjustment module are provided in the cabinet body; the three-phase unbalance adjustment module is used to be connected to the three-phase power main line to control the unbalance of the three-phase load; a busbar side plug connector and a module side plug connector are also arranged in the cabinet body; the busbar side plug connector is used to connect the power main line of the corresponding phase; the module side plug connector is arranged on the three-phase unbalance adjustment module and is used to be plugged and matched with the busbar side plug connector so that the three-phase unbalance adjustment module is connected to the power main line of the corresponding phase; a module guiding structure is also provided in the cabinet body. The module guiding structure guides the three-phase unbalance adjustment module to be loaded into the cabinet body along the plugging direction of the busbar side plug connector, so as to guide the module side plug connector on the three-phase unbalance adjustment module to be plugged with the busbar side plug connector; the maintenance difficulty is reduced; and the on-site installation of the three-phase unbalance adjustment module is facilitated.

Description

Technical Field

[0001] The present invention belongs to the field of distribution boxes, and particularly relates to a comprehensive distribution box. Background Art

[0002] Nowadays, with the development of urbanization, there are demolitions, meter relocations or an increase in electricity users; the instability of temporary electricity use and seasonal electricity use has led to continuous changes in electricity loads. Many meter installation and power connection workers do not have professional knowledge of three-phase load balance. Therefore, when connecting electricity, they do not notice the need to control the three-phase load balance and blindly and randomly connect and install meters for the circuit, which has largely caused the imbalance of the three-phase load. Secondly, most of the circuits in our country are a mixture of power and lighting. Therefore, when using single-phase electrical equipment, the electricity use efficiency will be reduced, and this difference further exacerbates the imbalance of the three-phase load of the distribution transformer. In addition, the monitoring of the distribution transformer load has been weakened. In the management of the distribution network, the management issues in the three-phase load distribution are often ignored. In the detection of the distribution network, the three-phase load of the distribution transformer is not regularly detected and adjusted.

[0003] The JP comprehensive distribution box is a power distribution device that integrates power distribution, metering, protection, control, and reactive power compensation, and is widely used in substations, factories, building power centers, power distribution, etc. The existing comprehensive distribution boxes basically use capacitors or cooperate with three-phase imbalance adjustment devices. When maintaining and repairing the compensation device, the power supply to the line needs to be stopped, making the maintenance difficult. In addition, the on-site installation is inconvenient.

[0004] In the prior art, as disclosed in a Chinese utility model patent with the authorization announcement number CN206313337U, a low-voltage active intelligent comprehensive distribution box includes a reactive power compensation unit. The reactive power compensation unit includes an active inverter module and multiple passive capacitor modules. The reactive power compensation unit is connected in parallel to the three-phase power main line of the incoming line unit through the QF outgoing line busbar. The distribution box uses the active inverter module and multiple passive capacitor modules to jointly compensate reactive power and control three-phase imbalance, and uses the reactive power compensation unit as an adjustment module for controlling three-phase imbalance in this distribution box. However, since the modules in its reactive power compensation unit are directly connected to the three-phase power main line, when maintenance and repair are required, the power supply to the comprehensive distribution box needs to be stopped for repair, which increases the maintenance difficulty of the comprehensive distribution box. Moreover, after the modules in its reactive power compensation unit are replaced, the on-site installation of the reactive power compensation unit is relatively inconvenient. Summary of the Invention

[0005] The object of the present invention is to provide a comprehensive distribution box to solve the problems of high maintenance difficulty caused by the need to cut off power for maintenance of the reactive power compensation unit used as a three-phase unbalance adjustment module in the existing comprehensive distribution box and inconvenient on-site installation after maintenance and replacement.

[0006] The following technical solutions are adopted for the comprehensive distribution box in the present invention:

[0007] A comprehensive distribution box includes a cabinet body. A three-phase power main line and a three-phase unbalance adjustment module are provided in the cabinet body. The three-phase unbalance adjustment module is used to be connected to the three-phase power main line to control the unbalance of the three-phase load. A busbar side plug connector and a module side plug connector are also provided in the cabinet body. The busbar side plug connector is used to connect the corresponding phase of the power main line. The module side plug connector is arranged on the three-phase unbalance adjustment module and is used to be plugged and matched with the busbar side plug connector so that the three-phase unbalance adjustment module is connected to the corresponding phase of the power main line. A module guiding structure is also provided in the cabinet body. The module guiding structure guides the three-phase unbalance adjustment module to be inserted into the cabinet body along the plugging direction of the busbar side plug connector to guide the module side plug connector on the three-phase unbalance adjustment module to be plugged with the busbar side plug connector.

[0008] The beneficial effect of the present invention is that when maintaining the three-phase unbalance adjustment module of the comprehensive distribution box, it is not necessary to cut off the power supply of the comprehensive distribution box. Only the three-phase unbalance adjustment module needs to be guided out of the cabinet body. After replacing the three-phase unbalance adjustment module with normal functions, the three-phase unbalance adjustment module is then guided and fitted into the cabinet body in cooperation with the module guiding structure. That is, the maintenance of the three-phase unbalance adjustment module can be realized without power-off of the comprehensive distribution box, reducing the maintenance difficulty. Moreover, the three-phase unbalance adjustment module is installed by a guiding assembly method. After being installed in place, the module side plug connector of the three-phase unbalance adjustment module is plugged and connected with the busbar side plug connector, thus facilitating the on-site installation of the three-phase unbalance adjustment module.

[0009] Further, a support plate and a cover plate are provided in the cabinet body. A module installation space is formed between the support plate and the cover plate. The module installation space is for the three-phase unbalance adjustment module to be inserted. The support plate is for supporting and placing the three-phase unbalance adjustment module.

[0010] Beneficial effect: The three-phase unbalance adjustment module is installed within the module installation space formed by the support plate and the cover plate. The installation space is isolated from other components by the support plate and the cover plate, thus making it more convenient to install the three-phase unbalance adjustment module.

[0011] Furthermore, a pallet rack is provided on the cabinet body. The pallet rack is arranged on both horizontal sides of the pallet for the side edges of the pallet to be fixedly connected. The top surface of the pallet is lower than the pallet rack to form a limiting recess. The limiting recess has a guiding side wall for guiding the corresponding side surface of the three-phase unbalance adjustment module.

[0012] Beneficial effects: A limiting recess is formed between the pallet and the pallet rack, and the side wall of the limiting recess is used for guiding cooperation with the side surface of the three-phase unbalance adjustment module, so as to facilitate the formation of the limiting recess and the guiding movement of the three-phase unbalance adjustment module.

[0013] Furthermore, a cover plate rack is provided on the cabinet body. The cover plate rack is arranged on both horizontal sides of the cover plate for the side edges of the cover plate to be fixedly connected. The bottom surface of the cover plate is higher than the cover plate rack to form a limiting groove. The notch of the limiting groove faces downward towards the top of the three-phase unbalance adjustment module. The limiting groove has a guiding groove wall for guiding the corresponding side surface of the three-phase unbalance adjustment module.

[0014] Beneficial effects: A limiting groove is formed between the cover plate and the cover plate rack, and the groove wall of the limiting groove is used for guiding cooperation with the side surface of the three-phase unbalance adjustment module, so as to facilitate the formation of the limiting groove and the guiding movement of the three-phase unbalance adjustment module.

[0015] Furthermore, there are two or more three-phase unbalance adjustment modules, and each of the three-phase unbalance adjustment modules is arranged in parallel.

[0016] Beneficial effects: By setting multiple three-phase unbalance adjustment modules, when one of them needs to be replaced, only the three-phase unbalance adjustment module to be replaced needs to be removed from the distribution box and replaced.

[0017] Furthermore, a guiding block is provided on the cabinet body. The two side walls of the guiding block are respectively used for guiding the corresponding side surfaces of two adjacent three-phase unbalance adjustment modules.

[0018] Beneficial effects: By setting a guiding block on the cabinet body, it is convenient to form a structure for guiding the three-phase unbalance adjustment module.

[0019] Furthermore, the guiding block is of a columnar structure and extends along the guiding direction of the three-phase unbalance adjustment module.

[0020] Beneficial effects: The guiding block of the columnar structure has a simple structure and is convenient for guiding cooperation with the three-phase unbalance adjustment module.

[0021] Furthermore, a vertical column is also provided on the cabinet body. The vertical column is located between the pallet and the cover plate. The module guiding structure is arranged on the cover plate and the pallet for the three-phase unbalance adjustment module to be guided between the cover plate and the pallet. The busbar side plug connector is arranged on the vertical column.

[0022] Beneficial effects: A module guiding structure and a busbar side plug connector are simultaneously provided between the cover plate, the support plate and the column, making the guiding movement and plugging cooperation of the three-phase unbalance adjustment module more precise.

[0023] Furthermore, a compensation chamber is provided in the cabinet body, and the compensation chamber is isolated from other functional chambers; the three-phase unbalance adjustment module is installed in the compensation chamber.

[0024] Beneficial effects: The three-phase unbalance adjustment module is separately installed to be distinguished from other components, thereby avoiding the mutual influence between the three-phase unbalance adjustment module and other components.

[0025] Furthermore, a cooling fan is provided on the cabinet body, and the cooling fan is arranged corresponding to the position of the three-phase unbalance adjustment module.

[0026] Beneficial effects: A fan is arranged corresponding to the three-phase unbalance adjustment module for dissipating heat from the three-phase unbalance adjustment module.

[0027] The above preferred technical solutions can be adopted separately, and two or more solutions can be arbitrarily combined when they can be combined. The technical solutions formed by the combination will not be specifically described here and are included in the description of this patent in this form. Description of the Drawings

[0028] Figure 1 is a top sectional view of the integrated distribution box in the present invention;

[0029] Figure 2 is the front view of the integrated distribution box;

[0030] Figure 3 is the three-dimensional view of the integrated distribution box;

[0031] Figure 4 is Figure 3 the partial enlarged view of the integrated distribution box at position A in

[0032] Figure 5 is the three-dimensional view of the integrated distribution box seen from the front;

[0033] Figure 6 is Figure 5 the partial enlarged view of the integrated distribution box at position B in

[0034] Figure 7 is the three-dimensional view of the integrated distribution box from another angle.

[0035] The names of the components corresponding to the respective reference numerals in the figure are as follows: 1 - cabinet body, 2 - stud, 3 - rear door of compensation chamber, 4 - outgoing line chamber, 5 - incoming line chamber, 6 - metering chamber, 7 - compensation chamber, 8 - front door of compensation chamber, 9 - three-phase unbalance adjustment module, 91 - module-side plug connector, 10 - left support plate of pallet, 11 - column, 12 - heat exchange fan, 13 - fan fixing cover, 14 - busbar-side plug connector, 15 - left support plate of cover plate, 16 - cover plate, 161 - folded edge of cover plate, 17 - right support plate of cover plate, 18 - partition of compensation chamber, 19 - right support plate of pallet, 20 - pallet, 21 - guide block. Detailed implementation manners

[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the detailed description of the embodiments of the present invention provided in the drawings below is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0038] It should be noted that the relational terms such as "first" and "second" that may appear in the specific implementation manners of the present invention are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "including", "comprising" or any other variant thereof that may appear are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0039] In the description of the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" that may appear should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0040] In the description of the present invention, unless otherwise clearly specified and defined, the term "provided with" that may appear should be understood in a broad sense. For example, the object of "provided with" may be a part of the body, or it may be separately arranged from the body and connected to the body, and this connection may be a detachable connection or a non-detachable connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0041] The present invention will be further described in detail below in conjunction with embodiments.

[0042] Embodiment 1 of the integrated distribution box in the present invention is as Figures 1 to 7 shown.

[0043] As Figure 1 shown, the integrated distribution box includes a cabinet 1. Inside the cabinet 1, it is divided into an incoming line chamber 4, an outgoing line chamber 3, a metering chamber 6, and a compensation chamber 7 by partitions. The compensation chamber 7 is separated from the outgoing line chamber 3 and the metering chamber 6 by a compensation chamber partition 18.

[0044] In the cabinet 1, there are provided a three-phase power main line and a three-phase unbalance adjustment module 9. The three-phase unbalance adjustment module 9 is connected to the three-phase power main line to address the unbalance problem of the three-phase load. On the cabinet 1, there is also provided a busbar side plug connector 14. The busbar side plug connector 14 is connected to the corresponding phase of the power main line through a cable; the busbar side plug connector 14 in this embodiment is an integrated connector, which can be used to transmit both signals and power.

[0045] As Figure 4 shown, in the compensation chamber 7, three three-phase unbalance adjustment modules 9 are installed. The three-phase unbalance adjustment modules 9 are used to address the unbalance problem of the three-phase load; on the three-phase unbalance adjustment modules 9, there are provided module side plug connectors 91. The module side plug connectors 91 are used to plug and cooperate with the busbar side plug connectors 14 so that the three-phase unbalance adjustment modules are connected to the corresponding phase of the power main line.

[0046] As Figure 3As shown in the figure, a pallet 20 is provided in the compensation chamber 7. Both sides of the pallet 20 have two bent flanges. A pallet left frame plate 10 and a pallet right frame plate 17 are respectively threadedly connected to the two bent flanges of the pallet 20. In this embodiment, the pallet left frame plate 10 and the pallet right frame plate 17 are the pallet frames on both sides of the pallet 10. The heights of the pallet left frame plate 10 and the pallet right frame plate 17 are higher than that of the pallet 20, so as to form a limiting recess between the pallet left frame plate 10, the pallet right frame plate 17 and the pallet 20. The limiting recess has a guiding side wall, and the guiding side wall is used to guide the corresponding side surface of the three-phase unbalance adjustment module. Two guiding blocks are also arranged side by side on the pallet 20. The bottom of the three-phase unbalance adjustment module 9 on the left moves in a guiding manner between the left side wall of the limiting recess and the guiding block close to the left. The bottom of the three-phase unbalance adjustment module 9 in the middle moves in a guiding manner between the two guiding blocks. The bottom of the three-phase unbalance adjustment module 9 on the right moves in a guiding manner between the guiding block close to the right and the right side wall of the limiting recess.

[0047] As Figure 6 shown, a cover plate 16 is also provided in the compensation chamber 7. The cover plate 16 is located at the top of the three-phase unbalance adjustment module 9. The left and right sides of the cover plate 16 respectively have cover plate flanges 161. A cover plate left frame plate 15 and a cover plate right frame plate 17 are respectively threadedly connected to the two cover plate flanges 161 of the cover plate 16. In this embodiment, the cover plate left frame plate 15 and the cover plate right frame plate 17 are the cover plate frames on both horizontal sides of the cover plate 16. The heights of the cover plate left frame plate 15 and the cover plate right frame plate 17 are lower than that of the cover plate 16, so as to form limiting grooves between the cover plate left frame plate 15, the cover plate right frame plate 17 and the cover plate 16. The openings of the limiting grooves face downward towards the top of the three-phase unbalance adjustment module. The limiting grooves have guiding groove walls, and the guiding groove walls are used to guide the corresponding side surfaces of the three-phase unbalance adjustment module.

[0048] As Figure 2 shown, two guiding blocks 21 are also arranged side by side on the cover plate 16. The top of the three-phase unbalance adjustment module 9 on the left moves in a guiding manner between the left groove wall of the limiting groove and the guiding block 21 close to the left. The top of the three-phase unbalance adjustment module 9 in the middle moves in a guiding manner between the two guiding blocks 21. The top of the three-phase unbalance adjustment module 9 on the right moves in a guiding manner between the guiding block 21 close to the right and the right groove wall of the limiting groove.

[0049] A turned-up flange is provided at the front end of the cover plate 16, which is used to threadedly connect the three-phase unbalance adjustment module 9 and the turned-up flange on the cover plate 16 after the three-phase unbalance adjustment module 9 is guided to the correct position, so as to fix the position of the three-phase unbalance adjustment module 9.

[0050] As Figure 7As shown in the figure, a column 11 is provided between the cover plate 16 and the support plate 20. The column 11 is fixed to the rear ends of the cover plate 16 and the support plate 20. A busbar-side plug connector 14 is provided on the column 11. The busbar-side plug connector 14 constitutes a plug connector that is plugged and connected to the three-phase unbalance adjustment module 9. When the three-phase unbalance adjustment module 9 is assembled in place between the cover plate 16 and the support plate 20, the three-phase unbalance adjustment module 9 is plugged and connected to the busbar-side plug connector 14 together.

[0051] As Figure 1 shown in the figure, a plurality of studs 2 are welded and fixed on the left side wall of the cabinet body 1. The left frame plate 15 of the cover plate and the left frame plate 10 of the support plate are threadedly connected to the studs 2. Mounting holes are provided on the compensation chamber partition 18. The right frame plate 17 of the cover plate and the right frame plate 19 of the support plate are threadedly connected to the mounting holes on the compensation chamber partition 18, so that the cover plate 16 and the support plate 20 are fixed in the compensation chamber 7 of the cabinet body 1.

[0052] Ventilation windows are provided at positions corresponding to the three-phase unbalance adjustment module 9 on the rear door 3 of the compensation chamber 7. Ventilation windows are also provided on both sides of the cabinet body 1. A fan fixing cover 13 is installed in the ventilation windows. Dust-proof cotton is filled between the fan fixing cover 13, the rear door 3 of the compensation chamber and the cabinet body to prevent dust from entering the cabinet body 1; A heat exchange fan 12 is installed on the fan fixing cover 13. There is a ventilation opening at the bottom of the cabinet body 1. The heat exchange fan 12 provided corresponding to the three-phase unbalance adjustment module 9 can dissipate heat from the three-phase unbalance adjustment module 9 better.

[0053] In Embodiment 2 of the present invention, the difference between this embodiment and Embodiment 1 is that in Embodiment 1, guide blocks are provided on the support plate, and support plate frame plates are provided on both sides of the support plate. Guide blocks and cover plate frame plates on both sides of the cover plate are also provided. The three-phase unbalance adjustment module is guided by the side walls of the grooves formed between the guide blocks, the corresponding support plate or the cover plate and the frame plate; in this embodiment, a plurality of parallel guide grooves are provided on the cover plate and the support plate. At this time, the groove walls of the guide grooves are guided by the side walls of the corresponding three-phase unbalance adjustment module.

[0054] In Embodiment 3 of the present invention, the difference between this embodiment and Embodiment 1 is that in Embodiment 1, three three-phase unbalance adjustment modules are provided; in this embodiment, the three three-phase unbalance adjustment modules can be set as an integral structure, that is, there is only one three-phase unbalance adjustment module at this time.

[0055] In Embodiment 4 of the present invention, the difference between this embodiment and Embodiment 1 is that in Embodiment 1, the support plate, the left support plate frame and the right support plate frame form a split bracket, and the three are detachably and fixedly connected; in this embodiment, the support plate, the left support plate frame and the right support plate frame can form an integral bracket, so that the bracket has better overall strength.

[0056] Embodiment 5 of the present invention. The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the cover plate, the left frame plate of the cover plate, and the right frame plate of the cover plate form a split cover plate frame, and the three are detachably and fixedly connected; in this embodiment, the cover plate, the left frame plate of the cover plate, and the right frame plate of the cover plate form an integral cover plate frame, so that the cover plate frame has better overall strength.

[0057] Embodiment 6 of the present invention. The difference between this embodiment and Embodiment 1 is that in Embodiment 1, a column is provided between the cover plate and the support plate, and a female busbar side plug connector is provided on the column; in this embodiment, no column is provided between the cover plate and the support plate. At this time, the female busbar side plug connector is directly fixed on the cabinet body and is plugged together with the module structure on the cabinet body after the three-phase unbalance adjustment module moves in place.

[0058] As mentioned above, the above are only the preferred embodiments of the present application and are not intended to limit the present application. The patent protection scope of the present application is subject to the claims. Any equivalent structural changes made by using the description and drawings of the present application shall similarly be included in the protection scope of the present application.

Claims

1. A comprehensive distribution box, comprising a cabinet body, wherein a three-phase power main line and a three-phase unbalance adjustment module are arranged in the cabinet body; the three-phase unbalance adjustment module is used for connecting with the three-phase power main line to control the unbalance of three-phase loads; characterized in that, A busbar side plug connector and a module side plug connector are also arranged in the cabinet body; the busbar side plug connector is used for connecting the main power line of the corresponding phase; the module side plug connector is arranged on the three-phase unbalance adjustment module and is used for plugging and mating with the busbar side plug connector so that the three-phase unbalance adjustment module is connected to the main power line of the corresponding phase; two or more of the three-phase unbalance adjustment modules are provided, and the three-phase unbalance adjustment modules are arranged side by side; a support plate and a cover plate are arranged in the cabinet body, and a module installation space is formed between the support plate and the cover plate. The module installation space is for the three-phase unbalance adjustment module to be loaded into, and the support plate is for the three-phase unbalance adjustment module to be supported and placed; vertical columns arranged horizontally at intervals corresponding to the three-phase unbalance adjustment module are arranged between the support plate and the cover plate, and the busbar side plug connector is arranged on the vertical columns; a support plate frame is arranged on the cabinet body and is arranged on both horizontal sides of the support plate for the side edges of the support plate to be fixedly connected. The top surface of the support plate is lower than the support plate frame to form a limiting recess, and the limiting recess has a guiding side wall; a cover plate frame is arranged on the cabinet body and is arranged on both horizontal sides of the cover plate for the side edges of the cover plate to be fixedly connected. The bottom surface of the cover plate is higher than the cover plate frame to form a limiting groove, and the notch of the limiting groove faces downwards towards the top of the three-phase unbalance adjustment module. The limiting groove has a guiding groove wall; guiding blocks corresponding in position are respectively arranged in the limiting recess and the limiting groove. A module guiding structure is formed between the side wall of the guiding block and the guiding side wall or the guiding groove wall, and between the side walls of two adjacent guiding blocks, for the three-phase unbalance adjustment module to be guided and loaded into the cabinet body along the plugging direction of the busbar side plug connector, so as to guide the module side plug connector on the three-phase unbalance adjustment module to be plugged with the busbar side plug connector.

2. The integrated distribution box according to claim 1, characterized in that, The guiding block is of a columnar structure and extends along the guiding direction of the three-phase unbalance adjustment module.

3. The integrated distribution box according to claim 1, wherein, A compensation chamber is arranged in the cabinet body, and the compensation chamber is isolated from other functional chambers. The three-phase unbalance adjustment module is installed in the compensation chamber.

4. The integrated distribution box according to claim 1, characterized in that, A cooling fan is arranged on the cabinet body, and the cooling fan is arranged corresponding to the position of the three-phase unbalance adjustment module.

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