Power distribution device and method for replacing circuit breaker

Abstract

The invention relates to the technical field of power distribution, in particular to a power distribution device and a method for replacing a circuit breaker, the power distribution device comprises a busbar assembly and a circuit breaker assembly, the busbar assembly comprises a busbar body extending in the first direction, and the busbar body comprises a first phase bar, a second phase bar and a third phase bar which are arranged at intervals; the circuit breaker assembly is arranged on one side of the busbar assembly in the second direction, the circuit breaker assembly comprises a circuit breaker body and three clamping connectors, the three clamping connectors are sequentially arranged on the circuit breaker body in the vertical direction, and the three clamping connectors correspondingly clamp the first phase bar, the second phase bar and the third phase bar respectively; in conclusion, according to the power distribution device, in the process of replacing the circuit breaker assembly, the disconnecting switch does not need to be closed, other power-off operations do not need to be executed, normal operation of other circuit breaker assemblies and equipment connected with the circuit breaker assemblies cannot be affected, the working continuity is high, replacement is convenient, and the replacement efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution, and in particular to a power distribution device and a method for replacing a circuit breaker. Background Art

[0002] At present, a general low-voltage distribution cabinet is equipped with an isolating switch, several busbars and multiple circuit breakers. The isolating switch and the busbar, as well as the isolating switch and each circuit breaker are connected by wires. Since power is continuously transmitted between the busbar and the circuit breaker, when any circuit breaker fails, the isolating switch must be disconnected so that the staff can safely replace the circuit breaker. However, once the isolating switch is disconnected, all circuit breakers connected to the busbar will be powered off, affecting the normal operation of other circuit breakers and the equipment connected to these circuit breakers. Therefore, the working continuity of the low-voltage distribution cabinet is poor. Summary of the invention

[0003] The object of the present invention is to provide a power distribution device and a method for replacing a circuit breaker to solve the technical problem that in the existing low-voltage power distribution cabinet, replacing any circuit breaker will affect the normal operation of other circuit breakers and equipment connected to these circuit breakers, resulting in poor working continuity of the low-voltage power distribution cabinet.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a power distribution device including a busbar assembly and a circuit breaker assembly, wherein the busbar assembly includes a busbar body extending along a first direction, and the busbar body includes a first phase row, a second phase row and a third phase row arranged in sequence from top to bottom; the circuit breaker assembly is arranged on one side of the busbar assembly along the second direction, and the circuit breaker assembly includes a circuit breaker body and three clamps, and the three clamps are arranged on the circuit breaker body in sequence along the vertical direction, and the three clamps respectively clamp the first phase row, the second phase row and the third phase row.

[0005] Optionally, it also includes a top insulating block, a bottom insulating block and two middle insulating blocks extending along the first direction, the top insulating block is arranged on the top surface of the first phase row, the two middle insulating blocks are respectively arranged between the first phase row and the second phase row and between the second phase row and the third phase row, and the bottom insulating block is arranged on the bottom surface of the third phase row.

[0006] Optionally, the top insulating block includes a first insulating partition extending along the first direction and a plurality of first insulating abutment plates, wherein the plurality of first insulating abutment plates are arranged at intervals on the bottom surface of the first insulating partition along the second direction and are located on the top surface of the first phase row;

[0007] The intermediate insulating block comprises a second insulating partition extending in the first direction and a plurality of second insulating plates, wherein the plurality of second insulating plates are arranged at intervals on the top and bottom surfaces of the second insulating partition along the second direction, the upper second insulating plates are located on the bottom surface of the first phase row or the bottom surface of the second phase row, and the lower second insulating plates are located on the top surface of the second phase row or the top surface of the third phase row;

[0008] The bottom insulating block includes a third insulating spacer extending along the first direction and a plurality of third insulating abutment plates, wherein the plurality of third insulating abutment plates are arranged at intervals on the top surface of the bottom insulating block along the second direction and are located on the bottom surface of the third phase row.

[0009] Optionally, the bottom surface of the first insulating partition is provided with a plurality of first arc isolation grooves extending along the first direction;

[0010] A plurality of second arc isolation grooves extending along a first direction are formed on the bottom surface of the second insulating partition plate.

[0011] Optionally, two groups of the first arc isolation grooves are provided on the bottom surface of the first insulating partition, one group of the first arc isolation grooves includes a plurality of the first arc isolation grooves sequentially arranged along the second direction, the two groups of the first arc isolation grooves are arranged at intervals along the second direction, and each of the first insulating abutment plates is arranged between the two groups of the first arc isolation grooves;

[0012] Two groups of second arc isolation grooves are provided on the bottom surface of the second insulating partition, one group of the second arc isolation grooves includes a plurality of second arc isolation grooves arranged in sequence along the second direction, the two groups of the second arc isolation grooves are arranged at intervals along the second direction, and each of the second insulating abutment plates is arranged between the two groups of the second arc isolation grooves.

[0013] Optionally, the busbar body further includes a plurality of temperature-sensitive optical fibers;

[0014] A first detection groove penetrating along a first direction is provided on the bottom surface of the top insulating block or the top surface of the middle insulating block located above, and the temperature-sensitive optical fiber is provided in the first detection groove, and the temperature-sensitive optical fiber is used to detect the temperature of the first phase row;

[0015] A second detection groove penetrating along a first direction is provided on the bottom surface of the intermediate insulating block located at the top or the top surface of the intermediate insulating block located at the bottom, and the temperature-sensitive optical fiber is used to detect the temperature of the second phase row;

[0016] A third detection groove penetrating along a first direction is provided on the bottom surface of the middle insulating block located below or the top surface of the bottom insulating block, and the temperature-sensitive optical fiber is used to detect the temperature of the third phase row.

[0017] Optionally, the busbar assembly also includes a plurality of busbar bodies, which are arranged in sequence along the first direction, and the first phase row, the second phase row and the third phase row of adjacent busbar bodies are correspondingly connected, the top surface of the top insulating block is provided with a docking groove that penetrates to the end face of one end thereof, the other end of the top insulating block is provided with a docking protrusion, the two ends of the middle insulating block are provided with parallel first docking slopes, and the two ends of the bottom insulating block are provided with parallel second docking slopes, and in adjacent busbar bodies, the top insulating block is connected by being inserted into the docking groove through the docking protrusion, the middle insulating blocks are abutted by the first docking slopes, and the bottom insulating blocks are abutted by the second docking slopes.

[0018] Optionally, in adjacent busbar bodies, the bottom surface of the docking protrusion of one busbar body abuts against the bottom of the docking groove of the other busbar body, the distance between the docking protrusion of one busbar body and the groove wall of the docking groove of the other busbar body is 0.5 mm to 1.5 mm, the angle between the first docking bevel and the horizontal plane is 50° to 80°, and the angle between the second docking bevel and the horizontal plane is 50° to 80°.

[0019] Optionally, it further includes a connecting bracket, which is arranged on one side of the busbar body along the second direction, and the circuit breaker assembly further includes a mounting bracket, which is fixedly arranged on the bottom surface of the circuit breaker body, and the mounting bracket is detachably connected to the connecting bracket;

[0020] The mounting bracket includes a first support plate, a first connecting plate and a second connecting plate, the first support plate is arranged on the bottom surface of the circuit breaker body, the first support plate is connected to the circuit breaker body, the first support plate protrudes from the side surface of the circuit breaker body in the direction away from the busbar body, the first support plate is provided with a first mounting hole penetrating in the vertical direction, the top surface of the connecting bracket is provided with a second mounting hole corresponding to the first mounting hole, the second connecting plate is arranged below the first support plate at intervals, the two ends of the first connecting plate are respectively connected to the first support plate and the second connecting plate, and the second connecting plate is detachably connected to the connecting bracket.

[0021] The present invention also relates to a method for replacing a circuit breaker, comprising the following steps:

[0022] S1. Turn off the switch on the circuit breaker body;

[0023] S2. Remove the connector between the mounting bracket and the mounting base;

[0024] S3, passing the long rod-shaped tool through the first mounting hole of the mounting bracket and inserting it into the second mounting hole;

[0025] S4, using a long rod-shaped tool to abut against the hole wall of the first mounting hole and the hole wall of the second mounting hole to pry the mounting bracket away from the busbar body, so that each clamp connector is separated from the busbar it is clamped;

[0026] S5. Take out the long rod-shaped tool;

[0027] S6. Pull the circuit breaker assembly away from the busbar body to separate the mounting bracket from the mounting base;

[0028] S7. Push the new circuit breaker assembly toward the busbar body so that its mounting bracket is pushed into the mounting base;

[0029] S8, passing the long rod-shaped tool through the first mounting hole of the mounting bracket and inserting it into the second mounting hole;

[0030] S9, using a long rod-shaped tool to abut against the hole wall of the first mounting hole and the hole wall of the second mounting hole to pry the mounting bracket toward the direction close to the busbar body, so that each clamp connector is clamped on the corresponding phase row;

[0031] S10, taking out the long rod-shaped tool;

[0032] S11, installing the connecting piece between the mounting bracket and the mounting base;

[0033] S12. Turn on the switch on the circuit breaker body.

[0034] Compared with the prior art, the power distribution device and the method for replacing a circuit breaker in the embodiment of the present invention have the following beneficial effects:

[0035] In the power distribution device of the present invention, the circuit breaker assembly is inserted on one side of the busbar body relative to the second direction. Specifically, the three phase rows of the busbar body are arranged at intervals in the vertical direction and extend in the first direction, so that the circuit breaker assembly can be installed on the side of the busbar body relative to the second direction. In the circuit breaker assembly, three clamps are arranged in sequence in the vertical direction on the circuit breaker body, and the three phase rows and the three clamps correspond to each other one by one, so that the circuit breaker body is connected to each phase row by clamping the clamps on the phase rows; when the circuit breaker assembly installed on the busbar body fails and needs to be replaced, the switch on the circuit breaker body is first turned off, and the circuit breaker installed on the busbar body is replaced. The circuit breaker assembly is pulled along the second direction away from the busbar body so that each clamp is separated from the corresponding phase row, thereby releasing the connection between the circuit breaker body and each phase row to remove the circuit breaker assembly. Further, the new circuit breaker assembly is pushed along the second direction toward the busbar body so that each clamp is clamped on the corresponding phase row, and then the circuit breaker body is opened to connect the circuit breaker body to each phase row. In summary, the power distribution device of the present invention does not need to disconnect the isolating switch during the process of replacing the circuit breaker assembly, and will not affect the normal operation of other circuit breaker assemblies and equipment connected to these circuit breaker assemblies. The working continuity is strong, and the replacement is convenient and the replacement efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of the power distribution device of the present invention.

[0037] Figure 2 It is the front view of the power distribution device of the present invention.

[0038] Figure 3 It is a top view of the power distribution device of the present invention.

[0039] Figure 4 for Figure 3 Sectional view of AA.

[0040] Figure 5 It is a left view of the power distribution device of the present invention.

[0041] Figure 6 It is a structural schematic diagram of the isolating switch assembly of the present invention installed on the connecting bracket.

[0042] Figure 7 This is a structural schematic diagram of the isolating switch assembly of the present invention installed on the connecting bracket from another perspective.

[0043] Figure numerals: 1, busbar assembly; 11, busbar body; 111, first phase row; 112, second phase row; 113, third phase row; 114, top insulating block; 1141, first insulating partition; 11411, first arc isolation groove; 1142, first insulating plate; 1143, docking groove; 1144, docking protrusion; 115, middle insulating block; 1151, second insulating partition; 11511, second arc isolation groove; 1152, second insulating plate; 1153, first docking slope; 116, bottom insulating block; 1161, third insulating partition; 1162, third insulating abutment plate; 1163, second docking slope; 1164, guide groove; 117, busbar bottom plate; 118, busbar bolt; 119, insulating sleeve; 2, circuit breaker assembly; 21, circuit breaker body; 211, guide protrusion; 22, clamp; 23, mounting bracket; 231, first support plate; 2311, first mounting hole; 232, first connecting plate; 233, second connecting plate; 3, connecting bracket; 31, second mounting hole; 4, mounting bottom plate. DETAILED DESCRIPTION

[0044] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0045] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] like Figures 1 to 7As shown, a power distribution device of the present invention includes a busbar assembly 1 and a circuit breaker assembly 2, wherein the busbar assembly 1 includes a busbar body 11 extending along a first direction, wherein the busbar body 11 includes a first phase row 111, a second phase row 112 and a third phase row 113 sequentially arranged from top to bottom; the circuit breaker assembly 2 is arranged on one side of the busbar body 11 along the second direction, wherein the circuit breaker assembly 2 includes a circuit breaker body 21 and three clamps 22, wherein the three clamps 22 are sequentially arranged on the circuit breaker body 21 along a vertical direction, and the three clamps 22 respectively clamp the first phase row 111, the second phase row 112 and the third phase row 113.

[0048] In the above technical solution, the circuit breaker assembly 2 is inserted into the side of the busbar body 11 relative to the second direction. Specifically, the three phase rows of the busbar body 11 are arranged at intervals in the vertical direction and extend in the first direction, so that the circuit breaker assembly 2 can be installed on the side of the busbar body 11 relative to the second direction. In the circuit breaker assembly 2, three clamps 22 are arranged in sequence in the vertical direction on the circuit breaker body 21, and the three phase rows and the three clamps 22 correspond to each other one by one, so that the circuit breaker body 21 is connected to each phase row by clamping the clamps 22 on the phase rows; when the circuit breaker assembly 2 installed on the busbar body 11 fails and needs to be replaced, first turn off the switch on the circuit breaker body 21, and replace the The circuit breaker assembly 2 is pulled along the second direction away from the busbar body 11, so that each clamp 22 is separated from the corresponding phase row, thereby releasing the connection between the circuit breaker body 21 and each phase row to remove the circuit breaker assembly 2. Further, the new circuit breaker assembly 2 is pushed along the second direction toward the busbar body 11, so that each clamp 22 is clamped on the corresponding phase row, and then the circuit breaker body 21 is opened to connect the circuit breaker body 21 to each phase row. In summary, the power distribution device of the present invention does not need to disconnect the isolating switch during the process of replacing the circuit breaker assembly 2, and will not affect the normal operation of other circuit breaker assemblies 2 and the equipment connected to these circuit breaker assemblies 2. The working continuity is strong, and the replacement is convenient and the replacement efficiency is high.

[0049] Furthermore, it also includes a top insulating block 114, a bottom insulating block 116 and two middle insulating blocks 115 extending along the first direction, wherein the top insulating block 114 is arranged on the top surface of the first phase row 111, and the two middle insulating blocks 115 are respectively arranged between the first phase row 111 and the second phase row 112 and between the second phase row 112 and the third phase row 113, and the bottom insulating block 116 is arranged on the bottom surface of the third phase row 113, wherein the top insulating block 114 is used to close the top of the first phase row 111 to reduce the safety hazards of the phase row to the staff, and reduce the electromagnetic interference and electrical short circuit risks caused by the phase row to other equipment, and the middle insulating block 115 is used to Isolate adjacent phase rows, reduce electromagnetic interference between adjacent phase rows, and reduce the risk of electrical short circuit. The bottom insulating block 116 is used to isolate the third phase row 113 and the conductive components located below the third phase row 113, such as the metal base and the equipment cabinet, to prevent leakage. In addition, the width of the top insulating block 114 along the second direction and the width of the middle insulating block 115 along the second direction are not less than the width of the first phase row 111 along the second direction, the width of the two middle insulating blocks 115 along the second direction is not less than the width of the second phase row 112 along the second direction, and the width of the middle insulating block 115 along the second direction and the width of the bottom insulating block 116 along the second direction are not less than the width of the third phase row 113 along the second direction.

[0050] Further, the top insulating block 114 includes a first insulating partition 1141 extending in the first direction and a plurality of first insulating plates 1142, wherein the plurality of first insulating plates 1142 are arranged at intervals on the bottom surface of the first insulating partition 1141 along the second direction and are located on the top surface of the first phase row 111; the middle insulating block 115 includes a second insulating partition 1151 extending in the first direction and a plurality of second insulating plates 1152, wherein the plurality of second insulating plates 1152 are arranged at intervals on the top surface and the bottom surface of the second insulating partition 1151 along the second direction, and the second insulating plates above 1152 is located on the bottom surface of the first phase row 111 or the bottom surface of the second phase row 112, and the second insulating plate 1152 below is located on the top surface of the second phase row 112 or the top surface of the third phase row 113; the bottom insulating block 116 includes a third insulating partition 1161 extending along the first direction and a plurality of third insulating plates 1162, and the plurality of third insulating plates 1162 are arranged at intervals on the top surface of the bottom insulating block 116 along the second direction and are located on the bottom surface of the third phase row 113, so that a heat dissipation cavity is generated between the insulating partition and the phase row, so as to improve the heat dissipation performance of each copper busbar.

[0051] In one embodiment, each insulating plate is located between two side surfaces of the phase plate relative to the second direction, and circuit breaker assemblies 2 can be installed on both sides of the busbar body 11 relative to the second direction, so that the busbar body 11 can install as many circuit breaker assemblies 2 as possible.

[0052] In another embodiment, one of the insulating plates above and below the phase plate is flush with a side of the phase plate relative to the second direction, and the circuit breaker assembly 2 can be installed on one side of the busbar body 11 relative to the second direction (but not on the other side) to reduce the width of the phase row along the second direction, thereby reducing the manufacturing cost of the busbar body 11.

[0053] Furthermore, the bottom surface of the first insulating partition 1141 is provided with a plurality of first arc isolation grooves 11411 penetrating along the first direction; the bottom surface of the second insulating partition 1151 is provided with a plurality of second arc isolation grooves 11511 penetrating along the first direction, and the surface area on the insulating partition is increased to weaken the creepage effect on the insulating partition, thereby increasing electrical safety and durability of the insulating block.

[0054] Furthermore, the top surfaces of the first insulating partition 1141 and the second insulating partition 1151 are flat or inclined surfaces, and it is best not to provide arc isolation grooves to facilitate cleaning of dust on the insulating partitions.

[0055] Furthermore, in order to further facilitate cleaning of dust on the insulating partition, two groups of first arc isolation grooves 11411 are provided on the bottom surface of the first insulating partition 1141, one group of the first arc isolation grooves 11411 includes a plurality of the first arc isolation grooves 11411 arranged in sequence along the second direction, the two groups of the first arc isolation grooves 11411 are spaced apart along the second direction, and each of the first insulating support plates 1142 is arranged between the two groups of the first arc isolation grooves 11411; two groups of the second arc isolation grooves 11511 are provided on the bottom surface of the second insulating partition 1151, one group of the second arc isolation grooves 11511 includes a plurality of the second arc isolation grooves 11511 arranged in sequence along the second direction, the two groups of the second arc isolation grooves 11511 are spaced apart along the second direction, and each of the second insulating support plates 1152 is arranged between the two groups of the second arc isolation grooves 11511.

[0056] Furthermore, the busbar body 11 also includes a plurality of temperature-sensitive optical fibers; the bottom surface of the top insulating block 114 or the top surface of the intermediate insulating block 115 located above is provided with a first detection groove penetrating along a first direction, and the temperature-sensitive optical fiber is arranged in the first detection groove, and the temperature-sensitive optical fiber is used to detect the temperature of the first phase row 111. Specifically, the first detection groove can be arranged on the first insulating plate 1142 or the second insulating plate 1152; the bottom surface of the intermediate insulating block 115 located above or the top surface of the intermediate insulating block 115 located below is provided with a first detection groove penetrating along a first direction. A second detection slot is provided, and the temperature-sensitive optical fiber is used to detect the temperature of the second phase row 112. Specifically, the second detection slot can be arranged on the second insulating plate 1152; the bottom surface of the intermediate insulating block 115 located below or the top surface of the bottom insulating block 116 is provided with a third detection slot that penetrates along the first direction, and the temperature-sensitive optical fiber is used to detect the temperature of the third phase row 113. Specifically, the third detection slot can be arranged on the second insulating plate 1152 or the third insulating plate 1162; the temperature of each phase plate is monitored in real time to prevent the phase plate from overheating and avoid accidents.

[0057] Furthermore, the busbar assembly 1 also includes a plurality of busbar bodies 11, and the plurality of busbar bodies 11 are sequentially arranged along the first direction, and the first phase row 111, the second phase row 112 and the third phase row 113 of the adjacent busbar bodies 11 are correspondingly connected, so that the busbar assembly 1 can expand the position where the circuit breaker assembly 2 can be installed by increasing the number of busbar bodies 11, so as to increase the scalability of the power distribution device; further, the top surface of the top insulating block 114 is provided with a docking groove 1143 penetrating to the end surface of one end thereof, and the other end of the top insulating block 114 is provided with a docking protrusion 1144, and the two ends of the middle insulating block 115 are provided with parallel first docking inclined surfaces 1153, and the two ends of the bottom insulating block 116 are provided with parallel second docking inclined surfaces 11 63. In the adjacent busbar bodies 11, the top insulating block 114 is connected by being inserted into the docking groove 1143 through the docking protrusion 1144, the middle insulating block 115 is abutted by the first docking bevel 1153, and the bottom insulating block 116 is abutted by the second docking bevel 1163; wherein, the connection between the docking protrusion 1144 and the docking groove 1143 has a guiding function, which can facilitate the docking of adjacent busbar bodies 11. Since there must be a certain gap between the busbar bodies 11, the phase row has the possibility of discharging through the gap. The connection between the docking protrusion 1144 and the docking groove 1143 and the connection between the docking bevels can increase the length of the gap, thereby reducing the risk of electrical accidents caused by the phase row discharging in the vertical direction.

[0058] Furthermore, in adjacent busbar bodies 11, the bottom surface of the docking protrusion 1144 of one busbar body 11 abuts against the bottom of the docking groove 1143 of another busbar body 11, and the distance between the docking protrusion 1144 of one busbar body 11 and the groove wall of the docking groove 1143 of another busbar body 11 is 0.5 mm to 1.5 mm, the angle between the first docking bevel 1153 and the horizontal plane is 50° to 80°, and the angle between the second docking bevel 1163 and the horizontal plane is 50° to 80°, so as to ensure that the adjacent busbar bodies 11 can be docked relatively conveniently and the length of the gap between the busbar bodies 11 can be greatly increased to ensure that electrical accidents will not occur due to phase discharge in the vertical direction.

[0059] Furthermore, it also includes a connecting bracket 3, which is arranged on one side of the busbar body 11 along the second direction, and the circuit breaker assembly 2 also includes a mounting bracket 23, which is fixedly arranged on the bottom surface of the circuit breaker body 21, and the mounting bracket 23 is detachably connected to the connecting bracket 3; the mounting bracket 23 includes a first support plate 231, a first connecting plate 232 and a second connecting plate 233, the first support plate 231 is arranged on the bottom surface of the circuit breaker body 21, the first support plate 231 is connected to the circuit breaker body 21, the first support plate 231 protrudes from the side of the circuit breaker body 21 in the direction away from the busbar body 11, and the first support plate 231 is provided with a first mounting hole 2311 that penetrates in the vertical direction, and the connecting The top surface of the connecting bracket 3 is provided with a second mounting hole 31 corresponding to the first mounting hole 2311, the second connecting plate 233 is spaced below the first supporting plate 231, the two ends of the first connecting plate 232 are respectively connected to the first supporting plate 231 and the second connecting plate 233, and the second connecting plate 233 is detachably connected to the base assembly, wherein, the circuit breaker assembly 2 can be passed through the first mounting hole 2311 by a long rod-shaped tool, inserted into the second mounting hole 31, abutted against the hole walls of the first mounting hole 2311 and the second mounting hole 31, and the circuit breaker assembly 2 is pried in a direction close to the busbar body 11 or away from the busbar body 11, so that the clamp 22 is clamped in the phase row or detached from the phase row, and the connecting holes between the second connecting plate 233 and the connecting bracket 3 correspond to each other.

[0060] Furthermore, the clamp 22 includes two clamping jaws arranged opposite to each other in the vertical direction, the clamping jaws are provided with a clamping portion, a clamping gap is formed between the clamping portions of the two clamping jaws, one end of the clamping jaw is connected to the circuit breaker body 21, and the other end is provided with a guide surface relative to the surface of the other clamping jaw, and the distance between the guide surfaces of the two clamping jaws gradually decreases from the direction away from the circuit breaker body 21 to the direction close to the circuit breaker body 21, and the guide surface is connected to the clamping portion to facilitate the clamping of the clamp 22 when the circuit breaker assembly 2 is pushed in, and to disengage from the arrangement when the circuit breaker assembly 2 is pulled out.

[0061] Furthermore, the bottom insulating block 116 is provided with a guide groove 1164, and the guide groove 1164 penetrates to the side of the bottom insulating block 116 relative to the second direction. The bottom surface of the circuit breaker body 21 is provided with a guide protrusion 211, and the guide protrusion 211 abuts against the guide groove 1164 to facilitate the circuit breaker assembly 2 to be connected to the busbar body 11.

[0062] Furthermore, the busbar assembly 1 also includes a busbar bottom plate 117, which is extended along the first direction, and each of the busbar bodies 11 is arranged on the top surface of the busbar bottom plate 117, and the busbar bottom plate 117 is fixedly connected to the power distribution cabinet.

[0063] Furthermore, it also includes a mounting base plate 4, which is arranged on one side of the busbar assembly 1 along the second direction, the mounting base plate 4 is fixedly connected to the power distribution cabinet, and the connecting bracket 3 is installed on the top surface of the mounting base plate 4.

[0064] Furthermore, the busbar assembly 1 also includes a plurality of busbar bolts 118. The busbar assembly 1 is provided with a plurality of busbar through holes along a first direction. The busbar through holes penetrate the busbar body 11 and the busbar bottom plate 117 along a vertical direction. The busbar bolts 118 pass through the busbar through holes to connect the busbar assembly 1 and the busbar bottom plate 117, wherein an insulating sleeve 119 is provided at the position where the busbar bolts 118 pass through the busbar assembly 1.

[0065] The present invention also relates to a method for replacing a circuit breaker, comprising the following steps: S1, turning off a switch on a circuit breaker body 21; S2, removing a connector between a mounting bracket 23 and a mounting base; S3, passing a long rod-shaped tool through a first mounting hole 2311 of the mounting bracket 23, and inserting the long rod-shaped tool into a second mounting hole 31; S4, using the long rod-shaped tool to abut against the hole wall of the first mounting hole 2311 and the hole wall of the second mounting hole 31 to pry the mounting bracket 23 away from the busbar body 11, so that each clamp 22 is separated from the phase row it clamps; S5, taking out the long rod-shaped tool; S6, pulling the circuit breaker assembly 2 out in a direction away from the busbar body 11, so that the mounting bracket 23 is separated from the mounting base; S7, the new circuit breaker assembly 2 is pushed in the direction close to the busbar body 11, so that the mounting bracket 23 is pushed into the mounting base; S8, the long rod-shaped tool is passed through the first mounting hole 2311 of the mounting bracket 23, and inserted into the second mounting hole 31; S9, the mounting bracket 23 is pried in the direction close to the busbar body 11 by abutting the hole wall of the first mounting hole 2311 and the hole wall of the second mounting hole 31 with the long rod-shaped tool, so that each clamp 22 is clamped in the corresponding phase row; S10, the long rod-shaped tool is taken out; S11, the connecting piece between the mounting bracket 23 and the mounting base is installed; S12, the switch on the circuit breaker body 21 is turned on.

[0066] Furthermore, the specific connection methods of the fixed setting and the fixed connection refer to the relative position relationship of two components that can be fixedly connected, including fixing by a connecting piece, fixing by welding, fixing by an adhesive, fixing by one-piece molding, and fixing by a snap connection.

[0067] Furthermore, the specific connection method of the detachable connection refers to that the two connected parts can be disassembled and assembled repeatedly and multiple times without being damaged or seriously deformed, including fixation by connecting parts and fixation by snap connections.

[0068] Furthermore, the connecting parts include fasteners, straps, ties, pneumatic connecting elements, hydraulic connecting elements, flange plates, Velcro, and buttons.

[0069] In summary, the embodiments of the present invention provide a power distribution device and a method for replacing a circuit breaker, and the technical effects thereof are as follows:

[0070] In the power distribution device of the present invention, the circuit breaker assembly 2 is inserted into the side of the busbar body 11 relative to the second direction. Specifically, the three phase rows of the busbar body 11 are arranged at intervals in the vertical direction and extend in the first direction, so that the circuit breaker assembly 2 can be installed on the side of the busbar body 11 relative to the second direction. In the circuit breaker assembly 2, three clamps 22 are arranged in sequence in the vertical direction on the circuit breaker body 21, and the three phase rows and the three clamps 22 correspond to each other one by one, so that the circuit breaker body 21 is connected to each phase row by clamping the clamps 22 on the phase row; when the circuit breaker assembly 2 installed on the busbar body 11 fails and needs to be replaced, the switch on the circuit breaker body 21 is first turned off, and the circuit breaker body 21 installed on the busbar body 11 is replaced. The circuit breaker assembly 2 is pulled along the second direction away from the busbar body 11, so that each clamp 22 is separated from the corresponding phase row, and then the connection between the circuit breaker body 21 and each phase row is released to remove the circuit breaker assembly 2. Further, the new circuit breaker assembly 2 is pushed along the second direction toward the busbar body 11, so that each clamp 22 is clamped on the corresponding phase row, and then the circuit breaker body 21 is opened to connect the circuit breaker body 21 to each phase row. In summary, the power distribution device of the present invention does not need to disconnect the isolating switch during the process of replacing the circuit breaker assembly 2, and will not affect the normal operation of other circuit breaker assemblies 2 and the equipment connected to these circuit breaker assemblies 2. The working continuity is strong, and the replacement is convenient and the replacement efficiency is high.

[0071] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A power distribution device, characterized in that: include: A busbar assembly (1) comprises a busbar body (11) extending in a first direction, wherein the busbar body (11) comprises a first phase row (111), a second phase row (112) and a third phase row (113) sequentially arranged from top to bottom; A circuit breaker assembly (2) is arranged on one side of the busbar body (11) along the second direction, the circuit breaker assembly (2) comprising a circuit breaker body (21) and three clamps (22), the three clamps (22) being arranged on the circuit breaker body (21) in sequence along the vertical direction, the three clamps (22) respectively correspondingly clamping the first phase row (111), the second phase row (112) and the third phase row (113).

2. The power distribution device according to claim 1, characterized in that: The invention also comprises a top insulating block (114), a bottom insulating block (116) and two middle insulating blocks (115) extending along a first direction, wherein the top insulating block (114) is arranged on the top surface of the first phase row (111), the two middle insulating blocks (115) are arranged between the first phase row (111) and the second phase row (112) and between the second phase row (112) and the third phase row (113), respectively, and the bottom insulating block (116) is arranged on the bottom surface of the third phase row (113).

3. The power distribution device according to claim 2, characterized in that: The top insulating block (114) comprises a first insulating partition (1141) extending along a first direction and a plurality of first insulating abutment plates (1142), wherein the plurality of first insulating abutment plates (1142) are arranged at intervals on the bottom surface of the first insulating partition (1141) along a second direction and are located on the top surface of the first phase row (111); The intermediate insulating block (115) comprises a second insulating partition (1151) extending in a first direction and a plurality of second insulating plates (1152), wherein the plurality of second insulating plates (1152) are arranged at intervals on the top and bottom surfaces of the second insulating partition (1151) along the second direction, wherein the upper second insulating plates (1152) are located on the bottom surface of the first phase row (111) or the bottom surface of the second phase row (112), and the lower second insulating plates (1152) are located on the top surface of the second phase row (112) or the top surface of the third phase row (113); The bottom insulating block (116) comprises a third insulating partition (1161) extending along a first direction and a plurality of third insulating plates (1162), wherein the plurality of third insulating plates (1162) are arranged at intervals along a second direction on the top surface of the bottom insulating block (116) and are located on the bottom surface of the third phase row (113).

4. The power distribution device according to claim 3, characterized in that: The bottom surface of the first insulating partition plate (1141) is provided with a plurality of first arc isolation grooves (11411) extending along a first direction; The bottom surface of the second insulating partition plate (1151) is provided with a plurality of second arc isolation grooves (11511) extending along the first direction.

5. The power distribution device according to claim 4, characterized in that: The bottom surface of the first insulating partition (1141) is provided with two groups of the first arc isolation grooves (11411), one group of the first arc isolation grooves (11411) comprises a plurality of the first arc isolation grooves (11411) sequentially arranged along the second direction, the two groups of the first arc isolation grooves (11411) are arranged at intervals along the second direction, and each of the first insulating abutment plates (1142) is arranged between the two groups of the first arc isolation grooves (11411); Two groups of second arc isolation grooves (11511) are provided on the bottom surface of the second insulating partition (1151), one group of the second arc isolation grooves (11511) includes a plurality of second arc isolation grooves (11511) arranged in sequence along the second direction, the two groups of the second arc isolation grooves (11511) are arranged at intervals along the second direction, and each of the second insulating plates (1152) is arranged between the two groups of the second arc isolation grooves (11511).

6. The power distribution device according to claim 2 or 3, characterized in that: The busbar body (11) further comprises a plurality of temperature-sensitive optical fibers; A first detection groove penetrating along a first direction is provided on the bottom surface of the top insulating block (114) or the top surface of the middle insulating block (115) located above, and the temperature-sensitive optical fiber is provided in the first detection groove, and the temperature-sensitive optical fiber is used to detect the temperature of the first phase row (111); A second detection groove penetrating along a first direction is provided on the bottom surface of the intermediate insulating block (115) located at the top or on the top surface of the intermediate insulating block (115) located at the bottom, and the temperature-sensitive optical fiber is used to detect the temperature of the second phase row (112); A third detection groove penetrating along a first direction is provided on the bottom surface of the intermediate insulating block (115) or the top surface of the bottom insulating block (116) located below, and the temperature-sensitive optical fiber is used to detect the temperature of the third phase row (113).

7. The power distribution device according to claim 2, characterized in that: The busbar assembly (1) further comprises a plurality of busbar bodies (11), wherein the plurality of busbar bodies (11) are arranged in sequence along a first direction, wherein the first phase row (111), the second phase row (112) and the third phase row (113) of adjacent busbar bodies (11) are correspondingly connected, the top surface of the top insulating block (114) is provided with a docking groove (1143) penetrating to the end surface of one end thereof, the other end of the top insulating block (114) is provided with a docking protrusion (1144), and the middle insulating block (115) The two ends of the busbar (11) are provided with parallel first butt-jointed inclined surfaces (1153), the two ends of the bottom insulating block (116) are provided with parallel second butt-jointed inclined surfaces (1163), in the adjacent busbar bodies (11), the top insulating block (114) is connected by being inserted into the butt-jointed groove (1143) via the butt-jointed protrusion (1144), the middle insulating block (115) is butted against each other via the first butt-jointed inclined surfaces (1153), and the bottom insulating block (116) is butted against each other via the second butt-jointed inclined surfaces (1163).

8. The power distribution device according to claim 7, characterized in that: In adjacent busbar bodies (11), the bottom surface of the docking protrusion (1144) of one busbar body (11) abuts against the bottom of the docking groove (1143) of the other busbar body (11), the distance between the docking protrusion (1144) of one busbar body (11) and the groove wall of the docking groove (1143) of the other busbar body (11) is 0.5 mm to 1.5 mm, the angle between the first docking inclined surface (1153) and the horizontal plane is 50° to 80°, and the angle between the second docking inclined surface (1163) and the horizontal plane is 50° to 80°.

9. The power distribution device according to claim 1, characterized in that: The circuit breaker assembly (2) further comprises a connecting bracket (3), the connecting bracket (3) being arranged on one side of the busbar body (11) along the second direction, and the circuit breaker assembly (2) further comprises a mounting bracket (23), the mounting bracket (23) being fixedly arranged on the bottom surface of the circuit breaker body (21), and the mounting bracket (23) being detachably connected to the connecting bracket (3); The mounting bracket (23) comprises a first support plate (231), a first connecting plate (232) and a second connecting plate (233); the first support plate (231) is arranged on the bottom surface of the circuit breaker body (21); the first support plate (231) is connected to the circuit breaker body (21); the first support plate (231) protrudes from the side surface of the circuit breaker body (21) in a direction away from the busbar body (11); the first support plate (231) is provided with a first mounting hole (2311) penetrating in a vertical direction; the top surface of the connecting bracket (3) is provided with a second mounting hole (31) corresponding to the first mounting hole (2311); the second connecting plate (233) is arranged below the first support plate (231) at intervals; two ends of the first connecting plate (232) are respectively connected to the first support plate (231) and the second connecting plate (233); the second connecting plate (233) is detachably connected to the connecting bracket (3).

10. A method for replacing a circuit breaker, characterized in that: The following steps are involved: S1. Turn off the switch on the circuit breaker body; S2. Remove the connector between the mounting bracket and the mounting base; S3, passing the long rod-shaped tool through the first mounting hole of the mounting bracket and inserting it into the second mounting hole; S4, using a long rod-shaped tool to abut against the hole wall of the first mounting hole and the hole wall of the second mounting hole to pry the mounting bracket away from the busbar body, so that each clamp connector is separated from the phase row it is clamped; S5. Take out the long rod-shaped tool; S6. Pull the circuit breaker assembly away from the busbar body to separate the mounting bracket from the mounting base; S7. Push the new circuit breaker assembly toward the busbar body so that its mounting bracket is pushed into the mounting base; S8, passing the long rod-shaped tool through the first mounting hole of the mounting bracket and inserting it into the second mounting hole; S9, using a long rod-shaped tool to abut against the hole wall of the first mounting hole and the hole wall of the second mounting hole to pry the mounting bracket toward the busbar body, so that each clamp connector is clamped on the corresponding phase row; S10, taking out the long rod-shaped tool; S11, installing the connecting piece between the mounting bracket and the mounting base; S12. Turn on the switch on the circuit breaker body.

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