CN109346928B - Power distribution system - Google Patents
Power distribution system Download PDFInfo
- Publication number
- CN109346928B CN109346928B CN201811209278.4A CN201811209278A CN109346928B CN 109346928 B CN109346928 B CN 109346928B CN 201811209278 A CN201811209278 A CN 201811209278A CN 109346928 B CN109346928 B CN 109346928B
- Authority
- CN
- China
- Prior art keywords
- conductor
- circuit breaker
- sub
- groove
- distribution system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004020 conductor Substances 0.000 claims abstract description 205
- 238000000034 method Methods 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 241000283690 Bos taurus Species 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
- H02B1/052—Mounting on rails
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
- H01R25/161—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
- H01R25/168—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts the connecting locations being situated away from the rail or bus-bar
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Distribution Board (AREA)
- Installation Of Bus-Bars (AREA)
Abstract
The embodiment of the application discloses a power distribution system, including: a circuit breaker (10), a rail (20), a busbar (30) and a branch conductor (301); a first clamping groove (102) is formed in one side of the bottom of the circuit breaker (10), and the circuit breaker (10) is clamped on the guide rail (20) through the first clamping groove (102); one end of the branch conductor (301) is arranged on the busbar (30), and the other end of the branch conductor (301) is electrically connected with a wiring terminal groove of the circuit breaker (10); the size of the circuit breaker (10) clamped into the guide rail (20) is smaller than or equal to the distance from the transverse end face of the split conductor (301) electrically connected with the wiring terminal groove of the circuit breaker (10) to the bottom of the wiring terminal groove of the circuit breaker (10).
Description
Technical Field
The application relates to the technical field of electric devices, in particular to a power distribution system.
Background
In the existing distribution system with confluence and diversion, the conductive member is formed by three modes: electrical conductors, buss bars, a combination of electrical conductors and buss bars. The connection mode is too complicated in installation process, the installation efficiency is low, and the more the wires are, the disordered the wiring is; if the shunt switches are more, the number of electric wires connected to the outgoing line end of the main switch is also more, and multiple electric wires are connected to the outgoing line end of the main switch, wherein the wiring difficulty is increased, and the wiring process is also difficult to ensure; the use of electrical leads has waste of man-hours, the lead layout process is difficult to ensure, and the economic cost is increased. For the bus bar, the bus bar connection mode is a new technology which is developed slowly in recent years, the connection is reliable, the operation is convenient and simple, the layout is neat and attractive, but after the bus bar is installed and put into use, the single switch is detached when maintenance is needed in the later stage, and the connection is difficult to realize. For the combination of the electric wires and the bus bars, the connection of the electric wires is complicated, and the bus bars are connected to cause the defect that the single switch cannot be detached.
In the existing power distribution system, once the conductive piece with similar functions of the bus bar exists, how to detach the single circuit breaker is an urgent technical problem to be solved.
Disclosure of Invention
In view of the foregoing problems in the prior art, an object of an embodiment of the present application is to provide a power distribution system, which solves the technical problem of disassembling a single circuit breaker in the presence of a bus.
To achieve the above object, an embodiment of the present application provides a power distribution system, including: the circuit breaker, the guide rail, the bus bar and the branch conductor;
a first clamping groove is formed in one side of the bottom of the circuit breaker, and the circuit breaker is clamped on the guide rail through the first clamping groove;
one end of the branch conductor is arranged on the busbar, and the other end of the branch conductor is electrically connected with a wiring terminal groove of the circuit breaker;
the size of the circuit breaker clamped into the guide rail is smaller than or equal to the distance from the transverse end face, electrically connected with the wiring terminal groove of the circuit breaker, of the branch conductor to the bottom of the wiring terminal groove of the circuit breaker.
Preferably, the first clamping groove is an acute angle limiting groove.
Preferably, the depth of the terminal slot of the circuit breaker is greater than or equal to the sum of the sizes of the wiring arm of the split conductor and the guide rail into which the circuit breaker is clamped.
Preferably, an elastic piece is arranged at the bottom of the wiring terminal groove of the circuit breaker, the free end of the elastic piece is in contact with the other end of the branch conductor, and under the action of the other end of the branch conductor, the elastic piece is enabled to shrink inside the wiring terminal groove of the circuit breaker at least equal to the size of the circuit breaker clamped into the guide rail.
Preferably, the method further comprises: a fixed support; the fixed support is used for fixedly limiting the busbar; wherein,
the fixed support is arranged on the guide rail; at least one groove is formed in the upper side of the fixed support; the busbar card is arranged in the groove.
Preferably, at least two grooves are arranged in the groove on the fixed support; the busbar card is arranged in the groove.
Preferably, a clamping protrusion is arranged at the bottom of the fixed support, the fixed support is clamped on the guide rail through the clamping protrusion at a preset position, and the fixed support and the guide rail are fixed into a whole through a screw.
Preferably, one side surface of the circuit breaker is provided with at least one groove; the busbar card is arranged in the groove.
Preferably, at least two grooves are arranged in the groove of the circuit breaker; the busbar card is arranged in the groove.
Preferably, the split conductor comprises a first split conductor sub-sheet and a second split conductor sub-sheet; the first sub-conductor piece and the second sub-conductor piece are attached and fixed into a whole through a first elastic card; one end of the first sub-conductor piece and one end of the second sub-conductor piece are mutually separated to enclose and form a conductive piece clamped on the busbar, a first limiting piece is arranged at the electric connection part of the sub-conductor and the wiring terminal groove of the circuit breaker at the other end of the second sub-conductor piece, when the branch conductor is electrically connected with the wiring terminal groove of the circuit breaker, the first limiting piece is contacted with the outer end face of the wiring terminal groove of the circuit breaker, and the depth of the branch conductor entering the wiring terminal groove of the circuit breaker is limited.
Preferably, the split conductor comprises a first split conductor sub-sheet and a second split conductor sub-sheet; the first sub-conductor piece and the second sub-conductor piece are attached and fixed into a whole through a first elastic card; the first conductor sub-sheet and the second conductor sub-sheet are mutually separated to form a conductive piece in a surrounding mode, the conductive piece is clamped on the busbar, the second limiting piece is arranged on the conductor sub-sheet and is attached to the second conductor sub-sheet, and one end of the second limiting piece is fixed with the conductor sub-sheet into a whole; the other end of the second limiting piece is integrally provided with a protrusion, so that the protrusion is abutted against the outer end face of the wiring terminal groove of the circuit breaker when the branch conductor is electrically connected with the wiring terminal groove of the circuit breaker, and the depth of the branch conductor entering the wiring terminal groove of the circuit breaker is limited.
Preferably, the split conductor comprises a first split conductor sub-sheet and a second split conductor sub-sheet; the first sub-conductor piece and the second sub-conductor piece are attached and fixed into a whole through a first elastic card; the first conductor sub-sheet and the second conductor sub-sheet are mutually separated to form a conductive piece in a surrounding mode, the conductive piece is clamped on the busbar, the second limiting piece is arranged on the conductor sub-sheet and is attached to the second conductor sub-sheet, and one end of the second limiting piece and one side of the first elastic card are integrally arranged; the other end of the second limiting piece is integrally provided with a protrusion, so that the protrusion is abutted against the outer end face of the wiring terminal groove of the circuit breaker when the branch conductor is electrically connected with the wiring terminal groove of the circuit breaker, and the depth of the branch conductor entering the wiring terminal groove of the circuit breaker is limited.
Preferably, the second limiting piece is in a zigzag shape.
Preferably, one end of the second limiting piece is fixed with the split conductor into a whole through a second elastic clamp.
Preferably, the protrusion is perpendicular to the wiring arm of the split conductor.
Preferably, an insulating jacket is arranged outside the busbar.
The distribution system of the invention has the characteristics and advantages that:
according to the technical scheme, the circuit breaker, the branch conductors and the guide rail are matched, so that the size of the circuit breaker clamped into the guide rail is smaller than or equal to the distance from the transverse end face, electrically connected with the wiring terminal groove of the circuit breaker, to the bottom of the wiring terminal groove of the circuit breaker, and therefore the circuit breaker can be independently disassembled without disassembling the whole comb-shaped row, maintenance and replacement can be carried out, labor and time are saved, the working efficiency is improved, and the service life of the comb-shaped row is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a diagram of a power distribution system according to the present technical solution;
fig. 2 is a mating cross-sectional view of the circuit breaker, the sub-conductors and the rail;
fig. 3 is a circuit breaker disassembly process diagram;
FIG. 4 is a schematic view of a fixed support structure;
fig. 5 is a schematic structural view of a circuit breaker;
FIG. 6 is one of the split conductor block diagrams;
FIG. 7 is a second split conductor structure;
FIG. 8 is a third split conductor structure diagram;
FIG. 9 is a fourth block diagram of a split conductor;
fig. 10 is a diagram of a circuit breaker removal force;
FIG. 11 is a diagram of a first split conductor sub-sheet stress analysis;
FIG. 12 is a diagram of a second sub-conductor sub-sheet force analysis;
FIG. 13 is a diagram showing the analysis of the maximum stress applied to the first sub-segment of the first sub-conductor;
FIG. 14 is a second diagram illustrating the maximum stress analysis of the first sub-chip;
FIG. 15 is a diagram showing the analysis of the maximum stress applied to the second sub-segment;
FIG. 16 is a second diagram of the analysis of the maximum stress applied to the second sub-conductor;
FIG. 17 is a schematic diagram of a split conductor and bus combination;
FIG. 18 is a second schematic diagram of a split conductor and bus combination;
FIG. 19 is a third schematic view of a split conductor and bus combination;
fig. 20 is a schematic view of one of the elastic members provided at the bottom of the terminal slot of the circuit breaker;
fig. 21 is a second schematic view of an elastic member provided at the bottom of the connection terminal of the circuit breaker.
The attached drawings are identified:
10: breaker 20: guide rail 30: bus bar
301: the branch conductor 40: fixed support 102: first clamping groove
301a: first stopper 301b: second stopper 301d: wiring arm for split conductor
60: insulating jacket 103: wire outlet end clip 401: fixedly supported groove
402: fixedly supported groove 101: the trench 104 of the circuit breaker: groove of circuit breaker
301c: the first elastic member 301e: second elastic member 3011: first sub-conductor piece
3012: second conductor sub-sheet 403: the fixed support clamping convex 11: elastic piece
Detailed Description
The technical solutions of the embodiments of the present disclosure will be clearly and fully described below with reference to non-limiting example embodiments shown in the drawings and detailed in the following description, more fully explaining example embodiments of the disclosure and their various features and advantageous details. It should be noted that the features illustrated in the drawings are not necessarily drawn to scale. Descriptions of well-known materials, components, and processing techniques are omitted so as to not obscure the example embodiments of the present disclosure. The examples are presented merely to facilitate an understanding of the practice of the example embodiments of the disclosure and to further enable those of skill in the art to practice the example embodiments. Thus, these examples should not be construed as limiting the scope of the embodiments of the disclosure.
Unless specifically defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Furthermore, in various embodiments of the present disclosure, the same or similar reference numerals denote the same or similar components.
In practice, when a single breaker is replaced, the whole busbar is required to be disassembled to complete the replacement work, so that unnecessary action waste is caused, and labor and time are wasted. In addition, the components with similar functions of the busbar are inevitably deformed in the disassembling process, hidden dangers such as temperature rise and service life are brought to later use, and the device cannot be operated in a live mode.
Based on this, this case provides a can dismantle distribution system of circuit breaker alone, solves the dismantlement maintenance of single circuit breaker, can not cut off the power supply operation moreover. As shown in fig. 1, includes: a circuit breaker 10, a rail 20, a busbar 30 and a branch conductor 301. Wherein, a first clamping groove is arranged at one side of the bottom of the circuit breaker 10, and the circuit breaker 10 is clamped on the guide rail 20 by the first clamping groove; one end of the sub-conductor 301 is arranged on the busbar 30, and the other end of the sub-conductor 301 is electrically connected with the wiring terminal slot of the circuit breaker 10; the dimension of the snap-in guide rail 20 of the circuit breaker 10 is equal to or less than the distance from the lateral end surface of the sub-conductor 301 electrically connected to the terminal slot of the circuit breaker 10 to the slot bottom of the terminal slot of the circuit breaker 10.
In practice, as shown in fig. 17, one of the diagrams of the combination of the split conductors and the bus bars is shown. FIG. 18 shows a second schematic diagram of a split conductor and bus combination. As can be seen from fig. 17 and 18, the busbar and the split conductor are integrally combined. In this case, in the whole disassembly process, since the branch conductor 301 and the busbar 30 are integrally formed into a comb-shaped row, the branch conductor 301 and the busbar 30 do not move relatively, the opposite side of the first clamping groove arranged on one side of the bottom of the circuit breaker 10 is movable and can move together with the wire outlet end clamping hoop 103 of the circuit breaker 10, when the circuit breaker 10 is disassembled, the wire outlet end clamping hoop 103 of the circuit breaker 10 is pulled back to drive the opposite side of the first clamping groove to move back, so that the circuit breaker 10 is pushed forward, the circuit breaker 10 can be taken out after the first clamping groove is completely moved out of the guide rail, and the single circuit breaker can be disassembled independently without disassembling the whole comb-shaped row.
FIG. 19 shows a third schematic view of a combination of a split conductor and a bus. As can be seen from fig. 19, one end of the branch conductor 301 is engaged with the bus bar 30. In order to successfully disassemble the circuit breaker 10, it is necessary to start from the mating space of the sub-conductor 301 and the circuit breaker 10, as shown in fig. 2. In this case, the bus bar 30 is not moved during the entire disassembly process, and the sub-conductor 301 rotates centering on the bus bar 30. The mating cross-sectional view of the circuit breaker 10 and the sub-conductor 301 and the rail 20 shows two critical dimensions: (1) The circuit breaker 10 snaps into dimension a of the rail 20 via the first snap groove. (2) The distance B from the lateral end surface of the sub-conductor 301, which is electrically connected to the terminal slot of the circuit breaker 10, to the slot bottom of the terminal slot of the circuit breaker 10. To disassemble the circuit breaker, three steps are required: (1) the outlet end clamp 103 of the circuit breaker 10 is pulled out. (2) The circuit breaker 10 is rotated to one end by a certain angle until the lower end surface of the other end of the circuit breaker 10 is higher than the upper surface of the guide rail 20, as shown in fig. 3. (3) The circuit breaker 10 is moved a distance a toward one end, then lifted upward and the circuit breaker 10 is removed toward the other end, i.e., this completes the disassembly of the individual circuit breakers.
It can be seen from fig. 3 that the relationship between dimensions a and B becomes a critical point in the disassembly process. Since the current circuit breakers in the market at present are not uniform in terms of the dimension A and the depth CO of the wiring terminal groove of the circuit breaker, disassembly tests are carried out on different models of each manufacturer, and data statistics is carried out on each dimension, as shown in the following table 1.
As can be seen from table 1, for a and CO, different models of different manufacturers are inconsistent, which means that when the circuit breaker 10 is disassembled, the rotation angle towards one end of the circuit breaker 10 is inconsistent, that is, the distance B from the transverse end surface of the sub-conductor 301 electrically connected with the terminal slot of the circuit breaker 10 to the bottom of the terminal slot of the circuit breaker 10 is also a variable, if the value of B is not appropriate, during the disassembly process, the end surface of the sub-conductor 301 will interfere with the circuit breaker 10, so that the circuit breaker 10 cannot be separated from the first clamping slot 102 forming an acute angle structure at the bottom of the casing of the circuit breaker 10, and the disassembly cannot be completed. The sub-conductors 301 and the buss bars 30 and the circuit breaker 10 are assembled for group testing, and the value of the reserved dimension B is required to rotate the circuit breaker 10 when the circuit breakers of different models of different manufacturers are disassembled. The values of B in Table 1 above were obtained through extensive testing, and the relationship of A and B was also found, i.e., when B.gtoreq.A, a single circuit breaker of the power distribution system could be disassembled with the buss bar 30 stationary.
TABLE 1
In the present embodiment, the distance B from the lateral end surface of the sub-conductor 301 electrically connected to the terminal slot of the circuit breaker 10 to the slot bottom of the terminal slot of the circuit breaker 10 is a critical dimension of a single circuit breaker that can be detached alone, and therefore, the fixing support 40 is provided on the mounting rail 20, and the fixing support 40 is used for fixing the bus bar 30. The bottom of the fixed support 40 is provided with a clamping protrusion 403, the fixed support 40 is clamped on the guide rail 20 by the clamping protrusion 403 at a preset position, and the fixed support 40 and the guide rail 20 are fixed into a whole by a screw. The fixed support 40 is provided with at least one groove 401 on the side close to the bus bar 30, as shown in fig. 4. The bus bar 30 can be clamped in any groove 401 for fixing and limiting. The distance B from the lateral end face of the electrical connection of the terminal slot of the circuit breaker 10 to the bottom of the slot of the terminal slot of the circuit breaker 10 is thereby ensured, and the electrical contact resistance of each branch is stabilized, and the electrical connection reliability is improved.
In practice, at least two grooves 402 are provided in the groove 401 of the fixed support 40; the bus bar 30 is clamped in the groove 402. Because at least two grooves 402 are formed in the groove 401, the clamped busbar 30 can be adjusted front and back in the groove 401, and each groove is correspondingly arranged according to the split conductors of different specifications, so that the power distribution system can adapt to different split conductor specifications and further adapt to circuit breakers of different manufacturers.
In practice, the power distribution system is provided with an insulating jacket 60 outside the buss bars 30 so that the system has no exposed metal parts, ensuring the electrical protection of the system and improving the safety.
The depth CO of the terminal groove of the circuit breaker 10 is equal to or greater than the sum of the dimensions of the terminal arm 301d of the branch conductor 301 and the dimension of the circuit breaker 10 engaged in the guide rail 20.
As shown in fig. 20, one of the schematic views of the elastic member provided at the bottom of the terminal slot of the circuit breaker; as shown in fig. 21, a second schematic view of the elastic member provided at the bottom of the terminal slot of the circuit breaker is shown. The bottom of the wiring terminal groove of the circuit breaker 10 is provided with an elastic piece 11, the free end of the elastic piece 11 is abutted against the other end of the sub-conductor 301, and under the action of the other end of the sub-conductor 301, the elastic piece 11 is contracted in the wiring terminal groove of the circuit breaker 10 at least equal to the size of the circuit breaker 10 clamped into the guide rail 20. The two different structures of the elastic member 11 are shown in fig. 19 and 20, respectively, and in practice, the elastic member 11 may be independent of one part of the circuit breaker, or may be one part of the circuit breaker 10 extending from the bottom housing of the terminal slot.
As shown in fig. 5, a schematic structural diagram of the circuit breaker is shown. At least one groove 101 is formed on one side surface of the circuit breaker 10; the bus bar 30 is clamped in the groove 101. Thus, the distribution system can ensure the distance B from the transverse end surface of the electric connection of the terminal slot of the circuit breaker 10 to the bottom of the terminal slot of the circuit breaker 10 without fixed support, and the electric contact resistance of each branch is stable, so that the electric connection reliability is improved. Likewise, at least two grooves 104 are provided in the channel 101 of the circuit breaker 10; the busbar 30 is clamped in the groove 104. Because at least two grooves 104 are formed in the groove 101, the clamped busbar 30 can be adjusted front and back in the groove 101, and each groove 104 is correspondingly arranged according to the split conductors of different specifications, so that the power distribution system can adapt to different split conductor specifications and further adapt to circuit breakers of different manufacturers.
As shown in fig. 6, one of the schematic structural diagrams of the split conductor is shown. As shown in fig. 7, a second schematic view of the split conductor structure is shown. The split conductor 301 includes a first split conductor sub-sheet 3011 and a second split conductor sub-sheet 3012; wherein the first sub-conductor 3011 and the second sub-conductor 3012 are attached to each other and are fixed together by a first elastic card 301 c; the first conductor sub-sheet 3011 has one end separated from one end of the second conductor sub-sheet 3012 to form a conductive member clamped in the busbar 30, and a first limiting member 301a is disposed at the position where the second conductor sub-sheet 3012 is electrically connected to the terminal slot of the circuit breaker 10, so that the first limiting member 301a contacts with an outer end surface of the terminal slot of the circuit breaker 10 when the conductor 301 is electrically connected to the terminal slot of the circuit breaker 10, and when the conductor 301 is electrically connected to the terminal slot of the circuit breaker 10, a side surface of the first limiting member 301a contacts with an end surface of the terminal slot of the circuit breaker 10, the depth of the conductor 301 entering the terminal slot of the circuit breaker 10 is limited, the connection size of the conductor 301 is ensured, and the distance B between a transverse end surface of the conductor 301 electrically connected to the terminal slot of the circuit breaker 10 and a slot bottom of the circuit breaker 10 is limited. Fig. 6 and 7 show two different configurations of the first stop, respectively.
As shown in fig. 8, a third schematic view of the split conductor structure is shown. The split conductor 301 includes a first split conductor sub-sheet 3011 and a second split conductor sub-sheet 3012; wherein the first sub-conductor 3011 and the second sub-conductor 3012 are attached to each other and are fixed together by a first elastic card 301 c; one end of the first sub-conductor 3011 and one end of the second sub-conductor 3012 are separated from each other to form a conductive member around the busbar 30, the sub-conductor 301 is provided with a second limiting member 301b, the second limiting member 301b is attached to the second sub-conductor, and one end of the second limiting member 301b is fixed to the sub-conductor 301; the other end of the second limiting member 301b is integrally provided with a protrusion, so that when the sub-conductor 301 is electrically connected with the terminal slot of the circuit breaker 10, the protrusion abuts against the outer end surface of the terminal slot of the circuit breaker 10, and the depth of the sub-conductor 301 entering the terminal slot of the circuit breaker 10 is limited.
As shown in fig. 9, a schematic diagram of the split conductor structure is shown. The split conductor 301 includes a first split conductor sub-sheet 3011 and a second split conductor sub-sheet 3012; wherein the first sub-conductor 3011 and the second sub-conductor 3012 are attached to each other and are fixed together by a first elastic card 301 c; the first sub-conductor piece and the second sub-conductor piece are separated from each other to form a conductive piece clamped on the busbar 30, the sub-conductor 301 is provided with a second limiting piece 301b, the second limiting piece 301b is attached to the second sub-conductor piece, and one end of the second limiting piece 301b is integrally arranged on one side of the first elastic clamp 301 c; the other end of the second limiting member 301b is integrally provided with a protrusion, so that when the sub-conductor 301 is electrically connected with the terminal slot of the circuit breaker 10, the protrusion abuts against the outer end surface of the terminal slot of the circuit breaker 10, and the depth of the sub-conductor 301 entering the terminal slot of the circuit breaker 10 is limited.
As can be seen from fig. 8 and 9, the second limiting member 301b is generally zigzag, and the protrusions are perpendicular to the connection arms of the split conductors. In fig. 8, one end of the second limiting member 301b is fixed to the sub-conductor 301 by a second elastic clip. In fig. 9, the second stopper 301b is integrated with the first elastic card 301c, which is equivalent to providing a second stopper 301b integrally on one side of the first elastic card 301. The split conductor structure shown in fig. 8 and 9 limits the depth of the split conductor 301 into the terminal slot of the circuit breaker 10, and ensures the access size of the split conductor 301, thereby limiting the distance B between the lateral end surface of the split conductor 301 electrically connected with the terminal slot of the circuit breaker 10 and the bottom of the terminal slot of the circuit breaker 10, and the single-way switch can be detached independently under the condition of ensuring the value of B.
For the present technical solution, in order to ensure that the split conductor 301 is not deformed due to the operation of human factors during the disassembly process, more intensive calculation and verification are performed.
When the circuit breaker 10 is disassembled, the wire outlet end clamp 103 of the circuit breaker 10 is pulled out. The circuit breaker 10 is rotated to one end by a certain angle until the lower end surface of the other end of the circuit breaker 10 is higher than the upper surface of the guide rail 20. The circuit breaker 10 is moved a distance a toward one end, then lifted upward and the circuit breaker 10 is removed toward the other end, i.e., this completes the disassembly of the individual circuit breakers. In this embodiment, b=a+2.0 is taken; a=1.5 mm, s=4.0 mm. At this time, the distance S between the branch conductor 301 and the circuit breaker 10 is 4.0mm, the distance B between the lateral end surface of the branch conductor 301 electrically connected to the terminal slot of the circuit breaker 10 and the bottom of the terminal slot of the circuit breaker 10 is 3.5mm, the dimension a of the circuit breaker 10 engaged in the guide rail 20 is 1.5mm, and the force for detaching the circuit breaker 10 is calculated by taking the value of 12.5mm as an example of the length of the end section of the branch conductor 301 shown in fig. 10.
In fig. 10, the operator typically applies a force to the circuit breaker 10, which in turn is conducted to the force of the vertical moment arm of the sub-conductor 301.
F·L＝M (1)
In formula 1, M is 2.3 nm.m, and L is 32 mm. Using equation 1, it is determined that the sum f=72 newtons of forces applied by the circuit breaker to the first split conductor sub-sheet 3011 and the second split conductor sub-sheet 3012.
As shown in fig. 11, the stress analysis is performed for the first split conductor sub-sheet 3011, and the following equation is satisfied:
F1·a＝f·D (2)
f＝μ·N (3)
wherein: friction coefficient μ=0.2, positive pressure n=8 newtons, split conductor diameter d=4 mm, arm length a=7.7 mm. F1 is the force of the circuit breaker on the first sub-conductor 3011 shown in fig. 11, solving f1=1 newtons, which is obviously small.
As shown in fig. 12, the stress analysis is performed for the second split conductor sub-sheet 3012, and the following equation is satisfied:
f1＝μ·N1 (5)
f2＝μ·N2 (6)
F2＝F-F1 (7)
F2·cos36°＝Q·cos59°+N2-N1 (8)
F2·sin36°＝Q·sin59°+f1-f2 (9)
where the coefficient of friction μ=0.2, the conductor separation diameter d=4 mm, the arm length a2=13.3 mm, a3=9.8 mm. Q is the force of the insulating jacket against the second split conductor sub-sheet 3012. Calculated from the above formula (4), formula (5), formula (6), formula (7), formula (8) and formula (9), Q was 55 newtons.
The stress at the right angle to the Q-acting point on the first split conductor sub-sheet 3011 is checked, as shown in fig. 13 and 14. The following equation is satisfied:
σ1＝M/Wx (10)
M＝F2·cos27°·a (11)
Wx＝b·h 2 /6 (12)
wherein f2=71 newtons, a=2.9mm, b=4mm, h=1.4mm, and σ1=140 Mpa. Wherein, the shear stress τ=f2·cos27 °/b·h=11 Mpa due to the shear force. The compressive stress σ2=f2·sin27 °/b·h=5.7 Mpa due to the pressure. The stresses due to shear and pressure are ignored, so that the stress magnitude at the Q point of action σ≡σ1=140 Mpa.
Checking the national standard of copper and copper alloy materials, GB/T2040-2002, for pure copper T2Y2, sigma b The first split conductor sub-sheet 3011 is taken at the stress point Q, σ is approximately equal to 140Mpa, and the split conductors cannot be plastically deformed and have qualified strength.
Checking the S point on the second sub-conductor 3012, and the maximum bending stress caused by bending moment at the S point is shown in fig. 15 and 16. The following equation is satisfied:
σ1＝M/Wx (10)
M＝F2·cos27°·a1+F2·sin27°·a2-Q·cos45°·a3 (13)
Wx＝b·h 2 /6 (12)
wherein f2=71 cattle, Q is 55 cattle, a1=3.6 mm, a2=4.5 mm, a3=5.6 mm, b=4 mm, and h=1.4 mm. Calculated m=0.174 Niumi, σ1=133 MPa.
Shear stress τ= (q·cos45 ° -f2·sin27 °)/(b·h) =1.3 Mpa due to shear force. Compressive stress σ2= (f2·cos27 ° -q·sin45 °)/(b·h) =4.3 Mpa due to tensile force. The stress due to shear and pressure is ignored, so that the stress magnitude at the S point of action σ≡σ1=133 Mpa. Checking the national standard of copper and copper alloy materials, GB/T2040-2002, for pure copper T2Y2, sigma b The material is taken at a stress point S of the second sub-conductor sheet 3012, wherein sigma is approximately 133MPa, the sub-conductor cannot be subjected to plastic deformation, and the strength is qualified.
Since the circuit breaker 10 is limited on the guide rail 20 through the acute angle clamping groove, and the fixed support 40 is clamped on the guide rail 20 through the lower end clamping convex card, the bus bar 30 is clamped in the groove of the fixed support 40, and the sub-conductor 301 is clamped on the bus bar 30. The sub-conductor 301 is made of copper or copper alloy, and since the bus bar 30 is fixed, the space between the sub-conductor 301 and the circuit breaker 10 is used for removing the circuit breaker 10. When the distance from the transverse end surface of the conductor 301 electrically connected with the terminal slot of the circuit breaker 10 to the bottom of the terminal slot of the circuit breaker 10 is satisfied, the circuit breaker 10 can be clamped into the guide rail 20, and a single circuit breaker can be independently disassembled for maintenance and replacement without moving the busbar 30 and other conductors, so that labor and time are saved, and the efficiency is improved.
Although the present application has been described by way of embodiments, those of ordinary skill in the art will recognize that there are many variations and modifications of the present application without departing from the spirit of the present application, and it is intended that the appended claims encompass such variations and modifications without departing from the spirit of the present application.
Claims (16)
1. A power distribution system, comprising: a circuit breaker (10), a rail (20), a busbar (30) and a branch conductor (301); it is characterized in that the method comprises the steps of,
a first clamping groove (102) is formed in one side of the bottom of the circuit breaker (10), and the circuit breaker (10) is clamped on the guide rail (20) through the first clamping groove (102);
one end of the branch conductor (301) is arranged on the busbar (30), and the other end of the branch conductor (301) is electrically connected with a wiring terminal groove of the circuit breaker (10);
the size of the circuit breaker (10) clamped into the guide rail (20) is smaller than or equal to the distance from the transverse end face of the split conductor (301) electrically connected with the wiring terminal groove of the circuit breaker (10) to the bottom of the wiring terminal groove of the circuit breaker (10).
2. The power distribution system of claim 1, wherein the first card slot (102) is an acute-angle limit slot.
3. The power distribution system according to claim 1, wherein a depth of a terminal slot of the circuit breaker (10) is equal to or greater than a sum of a size of a wiring arm (301 d) of the split conductor (301) and a size of the circuit breaker (10) that is caught into the guide rail (20).
4. The power distribution system according to claim 1, wherein an elastic member (11) is disposed at the bottom of the terminal slot of the circuit breaker (10), and a free end of the elastic member (11) abuts against the other end of the sub-conductor (301), and the elastic member (11) is made to shrink inside the terminal slot of the circuit breaker (10) by the other end of the sub-conductor (301) at least equal to the dimension of the circuit breaker (10) being clamped into the guide rail (20).
5. The power distribution system of claim 1, further comprising: a fixed support (40); the fixed support (40) is used for fixedly limiting the busbar (30); wherein,
the fixed support (40) is arranged on the guide rail (20); at least one groove (401) of the fixed support is arranged on the upper side of the fixed support (40); the bus bar (30) is clamped in the groove (401) of the fixed support.
6. The electrical distribution system according to claim 5, wherein at least two stationary support grooves (402) are provided in the stationary support grooves (401) of the stationary support (40); the bus bar (30) is clamped in the groove (402) of the fixed support.
7. The power distribution system according to claim 5, wherein the bottom of the fixed support (40) is provided with a locking protrusion (403), the fixed support (40) is locked to the guide rail (20) by the locking protrusion (403) at a predetermined position, and the fixed support (40) is fixed to the guide rail (20) integrally by screws.
8. The power distribution system according to claim 1, characterized in that a side of the circuit breaker (10) is provided with at least one groove (101) of the circuit breaker; the bus bar (30) is clamped in a groove (101) of the circuit breaker.
9. The power distribution system according to claim 8, wherein the groove (101) of the circuit breaker (10) is provided with at least two grooves (104) of the circuit breaker; the busbar (30) is clamped in a groove (104) of the circuit breaker.
10. The power distribution system of claim 1, wherein the split conductor (301) comprises a first split conductor sub-sheet (3011) and a second split conductor sub-sheet (3012); wherein the first sub-conductor sheet (3011) and the second sub-conductor sheet (3012) are attached to each other and are fixed into a whole by a first elastic card (301 c); one end of the first sub-conductor piece (3011) and one end of the second sub-conductor piece (3012) are mutually separated to enclose and form a conductive piece clamped on the busbar (30), a first limiting piece (301 a) is arranged at the electric connection part of the sub-conductor (301) and the wiring terminal groove of the circuit breaker (10) at the other end of the second sub-conductor piece (3012), so that the first limiting piece (301 a) is contacted with the outer end face of the wiring terminal groove of the circuit breaker (10) when the sub-conductor (301) is electrically connected with the wiring terminal groove of the circuit breaker (10), and the depth of the sub-conductor (301) entering the wiring terminal groove of the circuit breaker (10) is limited.
11. The power distribution system of claim 1, wherein the split conductor (301) comprises a first split conductor sub-sheet (3011) and a second split conductor sub-sheet (3012); wherein the first sub-conductor sheet (3011) and the second sub-conductor sheet (3012) are attached to each other and are fixed into a whole by a first elastic card (301 c); one end of the first sub-conductor sheet (3011) and one end of the second sub-conductor sheet (3012) are mutually separated to enclose a conductive piece clamped on the busbar (30), a second limiting piece (301 b) is arranged on the sub-conductor (301), the second limiting piece (301 b) is attached to the second sub-conductor sheet, and one end of the second limiting piece (301 b) and the sub-conductor (301) are fixed into a whole; the other end of the second limiting piece (301 b) is integrally provided with a protrusion, so that the protrusion is in contact with the outer end face of the wiring terminal groove of the circuit breaker (10) when the branch conductor (301) is electrically connected with the wiring terminal groove of the circuit breaker (10), and the depth of the branch conductor (301) entering the wiring terminal groove of the circuit breaker (10) is limited.
12. The power distribution system of claim 1, wherein the split conductor (301) comprises a first split conductor sub-sheet (3011) and a second split conductor sub-sheet (3012); wherein the first sub-conductor sheet (3011) and the second sub-conductor sheet (3012) are attached to each other and are fixed into a whole by a first elastic card (301 c); one end of the first sub-conductor piece and one end of the second sub-conductor piece are mutually separated to form a conductive piece in a surrounding mode, the conductive piece is clamped on the busbar (30), a second limiting piece (301 b) is arranged on the sub-conductor (301), the second limiting piece (301 b) is attached to the second sub-conductor piece, and one end of the second limiting piece (301 b) and one side of the first elastic card (301 c) are integrally arranged; the other end of the second limiting piece (301 b) is integrally provided with a protrusion, so that the protrusion is in contact with the outer end face of the wiring terminal groove of the circuit breaker (10) when the branch conductor (301) is electrically connected with the wiring terminal groove of the circuit breaker (10), and the depth of the branch conductor (301) entering the wiring terminal groove of the circuit breaker (10) is limited.
13. The power distribution system of claim 11, wherein the second stop (301 b) is zigzagged.
14. The power distribution system according to claim 13, wherein one end of the second stopper (301 b) is fixed to the sub-conductor (301) by a second elastic card (301 e).
15. The electrical distribution system of claim 11, wherein the protrusion is perpendicular to a wiring arm (301 d) of the sub-conductor (301).
16. The power distribution system of claim 1, wherein an insulating jacket (60) is provided outside of the buss bar (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811209278.4A CN109346928B (en) | 2018-10-17 | 2018-10-17 | Power distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811209278.4A CN109346928B (en) | 2018-10-17 | 2018-10-17 | Power distribution system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109346928A CN109346928A (en) | 2019-02-15 |
| CN109346928B true CN109346928B (en) | 2024-03-29 |
Family
ID=65309105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811209278.4A Active CN109346928B (en) | 2018-10-17 | 2018-10-17 | Power distribution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109346928B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009023802A1 (en) * | 2009-06-03 | 2010-12-09 | Jean Müller GmbH Elektrotechnische Fabrik | Adapter for contacting circuit breaker to bus bar system, has housing, three electrical conductors and turnover board which is supported in housing, where two fastening rails for circuit breaker, are rotably supported in bus bar system |
| DE102010021151A1 (en) * | 2010-05-21 | 2011-11-24 | Abb Ag | Control device arrangement for support rail of electrical switchgear cabinet for releasable fastening of series of e.g. electronic switches, has base parts formed for cable ducts, where control devices are arranged on sides of base parts |
| CN102684101A (en) * | 2011-03-15 | 2012-09-19 | Abb技术有限公司 | Diagonal demounting module for switchgear |
| CN104409289A (en) * | 2014-11-24 | 2015-03-11 | 温州力能电器科技有限公司 | Circuit breaker |
| CN107785676A (en) * | 2017-10-09 | 2018-03-09 | 首瑞（天津）电气设备有限公司 | Power distribution equipment Mobile elastic bus-bar and power distribution equipment |
| CN209298569U (en) * | 2018-10-17 | 2019-08-23 | 首瑞（天津）电气设备有限公司 | A kind of distribution system |
-
2018
- 2018-10-17 CN CN201811209278.4A patent/CN109346928B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009023802A1 (en) * | 2009-06-03 | 2010-12-09 | Jean Müller GmbH Elektrotechnische Fabrik | Adapter for contacting circuit breaker to bus bar system, has housing, three electrical conductors and turnover board which is supported in housing, where two fastening rails for circuit breaker, are rotably supported in bus bar system |
| DE102010021151A1 (en) * | 2010-05-21 | 2011-11-24 | Abb Ag | Control device arrangement for support rail of electrical switchgear cabinet for releasable fastening of series of e.g. electronic switches, has base parts formed for cable ducts, where control devices are arranged on sides of base parts |
| CN102684101A (en) * | 2011-03-15 | 2012-09-19 | Abb技术有限公司 | Diagonal demounting module for switchgear |
| CN104409289A (en) * | 2014-11-24 | 2015-03-11 | 温州力能电器科技有限公司 | Circuit breaker |
| CN107785676A (en) * | 2017-10-09 | 2018-03-09 | 首瑞（天津）电气设备有限公司 | Power distribution equipment Mobile elastic bus-bar and power distribution equipment |
| CN209298569U (en) * | 2018-10-17 | 2019-08-23 | 首瑞（天津）电气设备有限公司 | A kind of distribution system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109346928A (en) | 2019-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR200388334Y1 (en) | Watt-hour meter having circuit breaker | |
| CN102204022A (en) | Connection device and control center | |
| CN109346928B (en) | Power distribution system | |
| CN213212601U (en) | Automatic change controlgear's quick electricity-taking device | |
| CN102915887B (en) | Circuit arrangement and comprise the withdrawable circuit breaker of this circuit arrangement | |
| CN205178044U (en) | Secondary binding post | |
| CN204303707U (en) | Breaker | |
| CN208061993U (en) | A kind of circuit breaker connecting apparatus | |
| CN203882923U (en) | Quick connection type breaker | |
| CN207038365U (en) | A kind of static contact of self-operated type high voltage isolator | |
| CN202616426U (en) | Small bus wire-connecting rack | |
| CN216902738U (en) | Plug-in circuit breaker | |
| AU2017202430B2 (en) | An electrical protection device | |
| CN105098531A (en) | Connector of switch | |
| CN203553059U (en) | Plugging type leakage protection switch | |
| CN210326330U (en) | Plug-in type wiring terminal | |
| CN102683924A (en) | Large-current branching terminal | |
| US10063017B2 (en) | Connector | |
| CN102931020A (en) | Disconnecting switch with insulator crossbar | |
| CN219370941U (en) | Leakage release module | |
| CN2619359Y (en) | Earthing fault breaker with error connection protection | |
| CN201937054U (en) | Switchover unit for low-voltage drawing-out type switch cabinet | |
| CN203607681U (en) | Electrical equipment cabinet with insulated protection cover added around bus | |
| CN202905566U (en) | Insulated crossarm disconnecting switch | |
| CN107785780B (en) | Power supply and distribution module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |