CN110767509B - Low-voltage circuit breaker - Google Patents
Low-voltage circuit breaker Download PDFInfo
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- CN110767509B CN110767509B CN201910856703.7A CN201910856703A CN110767509B CN 110767509 B CN110767509 B CN 110767509B CN 201910856703 A CN201910856703 A CN 201910856703A CN 110767509 B CN110767509 B CN 110767509B
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- breaker
- circuit breaker
- plate
- grounding
- interlocking
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
- H01H71/082—Connections between juxtaposed circuit breakers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
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Abstract
Low-voltage circuit breaker belongs to circuit breaker technical field, especially relates to a low-voltage circuit breaker. The invention provides a low-voltage circuit breaker with high safety. The breaker comprises a breaker body, wherein a breaker wrench 50 is arranged on the breaker body, the upper end of the breaker body is a breaker inlet end, the lower end of the breaker body is a breaker outlet end 54, and the breaker comprises a structure key point that a tripping operation interlocking mechanism is arranged on the breaker body; the opening operation interlocking mechanism comprises a breaker interlocking mounting plate 10, the breaker interlocking mounting plate 10 is connected with the front end face of a breaker body, a linkage component of a breaker wrench is arranged on the breaker interlocking mounting plate 10, and a breaker interlocking baffle 11 is arranged on the outer side of the linkage component.
Description
Technical Field
The invention belongs to the technical field of circuit breakers, and particularly relates to a low-voltage circuit breaker.
Background
In the working process of the electric equipment, residual charges exist on the electric equipment after the power supply is cut off, so that the safety of an overhaul electrician is endangered. When the inside of the circuit breaker breaks down, the circuit breaker is not completely opened, and the electric equipment is still electrified after the circuit breaker is opened, so that the safety of maintenance electricians is endangered. When the safety measures of the working place are not secret or damaged, the phenomenon of reverse power transmission can occur when the power supply passes through an abnormal path. The form of back-feeding is diversified, for example, by a PT or station (plant) with variable secondary-to-primary back-feeding, by a double-circuit line back-feeding and a loop-appearing with its own power generating equipment, etc., which are avoided and strictly prohibited in power-running operation. And reverse power transmission can cause accidents of casualties and equipment damage.
Disclosure of Invention
The present invention has been made in view of the above problems, and provides a high-safety low-voltage circuit breaker.
In order to achieve the purpose, the invention adopts the following technical scheme that the breaker comprises a breaker body, wherein a breaker wrench 50 is arranged on the breaker body, the upper end of the breaker body is a breaker inlet end, the lower end of the breaker body is a breaker outlet end 54, and the breaker body is structurally characterized in that a tripping operation interlocking mechanism is arranged on the breaker body;
the opening operation interlocking mechanism comprises a breaker interlocking mounting plate 10, the breaker interlocking mounting plate 10 is connected with the front end face of a breaker body, a linkage part of a breaker wrench is arranged on the breaker interlocking mounting plate 10, a breaker interlocking baffle plate 11 is arranged on the outer side of the linkage part, the breaker interlocking baffle plate 11 is in shaft connection with the upper end of an interlocking connecting plate 12, the lower end of the interlocking connecting plate 12 is in shaft connection with the front part of one side of an operation handle baffle plate 13, the rear part of the side of the operation handle baffle plate 13 is in shaft connection with the front end of a connecting plate 22, the rear end of the connecting plate 22 is connected with a lower wire outlet base 8 through a fastener 21, an upper grounding base 14 is arranged in front of the lower wire outlet base 8, and a grounding copper braided wire 6 is arranged on the side, far away from the interlocking connecting plate 12, of the upper grounding base 14; the middle part of the front end of the upper grounding seat 14 is provided with a grounding handle 15, and the lower wire outlet seat 8 is connected with a wire outlet end at the lower end of the breaker body through a lower wire outlet row 9.
As a preferable scheme, the linkage component comprises a vertical square plate 61, a clamping plate 60 extending towards the side is arranged on the inner side of the vertical square plate, and the circuit breaker wrench 50 is arranged in a notch of the clamping plate; vertical strip-shaped openings 62 are formed in the vertical square plates, transverse guide pillars on the breaker interlocking mounting plate 10 penetrate through the vertical strip-shaped openings, and the vertical square plates are arranged between the breaker interlocking mounting plate 10 and the breaker body.
As another preferred scheme, the breaker interlocking mounting plate 10 is a vertical rectangular plate, the upper end and the lower end of the rectangular plate are bent towards the side of the breaker body, the upper end is bent to be close to the inner side and is provided with an upper connecting part extending upwards, the lower end is bent to be close to the inner side and is provided with a lower connecting part extending downwards, the upper connecting part is connected with the upper end of the breaker body through a fastener, and the lower connecting part is connected with the lower end of the breaker body through a fastener; the middle part of the inner side end of the rectangular plate is provided with a horn-shaped notch 55.
As another preferred scheme, the upper grounding seat 14 of the present invention is provided with a grounding rod 7, the grounding rod 7 is cast in the upper grounding seat 14, and the upper grounding seat 14 is an insulating member.
As another preferred scheme, the operation handle baffle 13 is a u-shaped plate, the upper end of the middle of the u-shaped plate is provided with a circuit breaker closing limit baffle 23 entering the notch 51, the circuit breaker closing limit baffle 23 is vertical Z-shaped, and the front upper end of the Z-shaped circuit breaker closing limit baffle 23 is connected with the grounding handle 15.
As another preferred scheme, the entrance notch of the circuit breaker closing limit baffle 23 is a horn-shaped notch.
In another preferred embodiment, the upper grounding base 14 of the present invention comprises a horizontally long plate-shaped housing, the outer side wall of the long plate-shaped housing is fixed to the upper end of the grounding copper braided wire 6 by a hexagon socket head cap screw, the upper end of the long plate-shaped housing has a semicircular projection projecting upward, the center of the lower end of the semicircular projection is a mounting hole of the grounding pole 7,
as another preferable scheme, the semicircular bulges are three and evenly distributed along the length direction of the long plate-shaped shell, the long plate-shaped shell on two sides below the middle semicircular bulge is provided with a pressing guide post 52 mounting hole, and the long plate-shaped shell on the lower part between the pressing guide post mounting holes on two sides is provided with a grounding handle 15 mounting hole.
As another preferable scheme, the rear end of the lower outlet base 8 is provided with a lower outlet row 9, the lower outlet base 8 comprises a transverse long plate-shaped shell, the upper end of the long plate-shaped shell is provided with a semicircular bulge protruding upwards, and the center of the lower end of the semicircular bulge is a mounting hole of the lower outlet row 9.
As another preferred scheme, the outlet line 9 comprises a vertical Z-shaped connecting sheet, the lower end of the front upper part of the Z-shaped connecting sheet is provided with a cylindrical slot 56 extending towards the upper grounding seat 14 side, the cylindrical slot is inserted into the mounting hole of the lower outlet line 9, the front upper part of the Z-shaped connecting sheet is arranged at the rear end of the lower outlet line seat 8, and the upper end and the lower end of the Z-shaped connecting sheet are provided with connecting holes; the connecting hole at the upper end of the Z-shaped connecting sheet is connected with the line outlet end of the circuit breaker through a fastener, and the connecting hole at the lower end of the Z-shaped connecting sheet is a connecting hole of a line outlet cable of the circuit breaker.
As another preferable scheme, three semicircular bulges on the lower wire outlet seat 8 are uniformly distributed along the length direction of the long plate-shaped shell.
As another preferable scheme, the cylindrical slot of the lower outlet row 9 is poured into the mounting hole of the lower outlet row 9 of the lower outlet base 8.
As another preferable scheme, the front end of the grounding handle 15 passes through a mounting hole of the grounding handle 15 on the grounding seat 14 and is screwed into a threaded hole of the threaded insert 17 on the lower wire outlet seat 8, the front end of the compression guide post is inserted into a guide hole on the lower wire outlet seat 8, the rear part of the compression guide post is a stud, the rear end of the stud is screwed through a mounting threaded hole of the compression guide post on the grounding seat 14 and is screwed with a nut 57, and an elastic pad and a flat pad are arranged between the nut and the front end surface of the grounding seat 14.
In the invention, the pressing guide post hole of the butt joint surface of the grounding seat 14 and the outgoing line seat 8 is correspondingly provided with an outward expanding groove 58, a pressing spring 16 is sleeved on the pressing guide post between the two outward expanding grooves, one end of the pressing spring is connected with the bottom surface of the outward expanding groove of the grounding seat 14, and the other end of the pressing spring is connected with the bottom surface of the outward expanding groove of the outgoing line seat 8.
In addition, the threaded insert 17 according to the invention is cast into the lower outlet socket 8.
The invention has the beneficial effects.
The invention is provided with the wire outlet seat, the grounding seat and the grounding copper braided wire and has the discharging function. Therefore, the potential safety hazard of incomplete opening caused by internal faults of the circuit breaker can be eliminated. Meanwhile, reverse power transmission (grounding of the reverse power transmission) can be avoided, and the safety of the device is improved.
The invention further improves the operation safety of the device by opening the brake to operate the interlocking mechanism.
Drawings
The invention is further described with reference to the following figures and detailed description. The scope of the invention is not limited to the following expressions.
FIG. 1 is a schematic structural diagram of the open state of the present invention.
Fig. 2 is a schematic structural diagram of a closing state of the invention.
FIG. 3 is a schematic structural diagram of the interlocking mechanism for opening operation of the present invention.
Fig. 4 is a schematic structural diagram of the relevant parts of the upper grounding seat 14 according to the present invention.
Fig. 5 is a schematic structural diagram of the lower wire outlet 9 of the present invention.
Fig. 6 is a schematic structural diagram of relevant components of the lower wire outlet base 8 according to the present invention.
Figure 7 is a front view of the upper ground socket 14 of the present invention.
Fig. 8 is a cross-sectional view C-C of fig. 7.
FIG. 9 is a cross-sectional view taken along line E-E of FIG. 7
Fig. 10 is a front view showing a closing state of the present invention.
Fig. 11 is a cross-sectional view C-C of fig. 10.
Fig. 12 is a front view showing the opening state of the present invention.
Fig. 13 is a cross-sectional view C-C of fig. 12 of the present invention.
Fig. 14 is a rear view of the lower wire outlet base 8 of the present invention.
Fig. 15 is a cross-sectional view C-C of fig. 14.
Fig. 16 is a cross-sectional view taken along line D-D of fig. 14.
Fig. 17 is a front view of the opening operation interlocking mechanism of the invention.
Fig. 18 is a cross-sectional view C-C of fig. 17.
Fig. 19 is a sectional view F-F of fig. 17.
FIG. 20 is a top view of the trip operation interlock mechanism of the present invention.
Fig. 21 is a side view of the opening operation interlocking mechanism of the present invention.
FIG. 22 is a schematic view of the structure of the components associated with the linkage assembly of the present invention.
FIG. 23 is a schematic view of the linkage member configuration of the present invention.
Fig. 24 is a front view of the outdoor integrated low voltage distribution box of the present invention.
Fig. 25 is a top view of the outdoor integrated low voltage distribution box of the present invention.
Fig. 26 is a perspective view of the interior structure of the outdoor integrated low voltage distribution box of the present invention.
Fig. 27 is a perspective view of the outdoor integrated low voltage distribution box of the present invention.
Fig. 28 is a circuit diagram of the outdoor integrated low-voltage distribution box of the invention.
Fig. 29 is a schematic structural diagram of relevant components of the outdoor comprehensive low-voltage distribution box reactive compensation module.
In fig. 24-29, 70 is a hanging frame, 71 is an insulator mounting beam, 72 is a ground bar connecting plate, 74 is a breaker, 75 is a load switch, 76 is a current transformer, 77 is a left vertical bus, 78 is an insulator mounting beam, 79 is an outdoor box, 80 is a reactive compensation module, 82 is a right vertical bus, 83 is an upper horizontal bus, 84 is an air outlet, 85 is an L-shaped ground bar connecting plate, 86 is a mounting plate, 87 is a lightning arrester, 88 is a reactive compensation module incoming line breaker, 89 is a vertical bracket, 90 is a connecting piece, and 91 is a mounting plate.
Fig. 30 is a schematic structural diagram of relevant components of the reactive compensation module of the low-voltage distribution box.
Fig. 31 is a front view of the low voltage distribution box of the present invention.
Figure 32 is a top plan view of the low voltage distribution box of the present invention.
Fig. 33 is a perspective view of the low voltage distribution box of the present invention.
Figure 34 is another perspective view of the low voltage distribution box of the present invention.
Figure 35 is a rear view of the low voltage distribution box of the present invention.
Fig. 36 is a schematic view of the connection of the combination switch of the low-voltage distribution box of the invention.
In fig. 30-36, 70 is a hanging frame, 71 is an insulator mounting beam, 72 is a ground bar connecting plate, 74 is a breaker, 75 is a load switch, 76 is a current transformer, 77 is a left vertical bus, 78 is an insulator mounting beam, 79 is an outdoor box, 80 is a reactive compensation module, 82 is a right vertical bus, 83 is an upper horizontal bus, 84 is an air outlet, 85 is an L-shaped ground bar connecting plate, 86 is a main incoming line breaker, 87 is a lightning arrester, 88 is a reactive compensation module branch incoming line breaker, 89 is a composite switch mounting riser, 90 is a composite switch, 91 is a capacitor, 92 is a mounting plate, 93 is a connecting frame, 94 is a connecting piece, 95 is a capacitor mounting plate, 96 is a connecting plate, 97 is a mounting transverse plate, 98 is a transverse plate connecting hole, and 99 is a mounting hole.
Detailed Description
As shown in the figure, the low-voltage circuit breaker comprises a circuit breaker body, wherein a circuit breaker wrench is arranged on the circuit breaker body, the upper end of the circuit breaker body is a circuit breaker wire inlet end, the lower end of the circuit breaker body is a circuit breaker wire outlet end, and a brake separating operation interlocking mechanism is arranged on the circuit breaker body;
the opening operation interlocking mechanism comprises a breaker interlocking mounting plate 10, the breaker interlocking mounting plate 10 is connected with the front end face of a breaker body, a linkage component of a breaker wrench is arranged on the breaker interlocking mounting plate 10 of the breaker interlocking mounting plate 10, a breaker interlocking baffle plate 11 is arranged on the outer side of the linkage component, the breaker interlocking baffle plate 11 is in shaft connection with the upper end of an interlocking connecting plate 12, a lower end shaft 19 of the interlocking connecting plate 12 is connected with the front part of one side of an operating handle baffle plate 13, a rear part shaft 20 of the side of the operating handle baffle plate 13 is connected with the front end of a connecting plate 22, the rear end of the connecting plate 22 is connected with a lower wire outlet base 8 through a fastener 21, an upper grounding base 14 is arranged in front of the lower wire outlet base 8;
the middle part of the front end of the upper grounding seat 14 is provided with a grounding handle 15, and the lower wire outlet seat 8 is connected with a wire outlet end at the lower end of the breaker body through a lower wire outlet row 9.
The linkage component comprises a vertical square plate 61, a clamping plate 60 extending towards the side is arranged on the inner side of the vertical square plate, and the circuit breaker wrench 50 is arranged in a notch of the clamping plate; vertical strip-shaped openings 62 are formed in the vertical square plates, transverse guide pillars 63 on the breaker interlocking mounting plate 10 penetrate through the vertical strip-shaped openings, and the vertical square plates are arranged between the breaker interlocking mounting plate 10 and the breaker body.
The breaker interlocking mounting plate 10 is a vertical rectangular plate, the upper end and the lower end of the rectangular plate are bent towards the side of the breaker body, the upper end is bent to be close to the inner side and is provided with an upper connecting part extending upwards, the lower end is bent to be close to the inner side and is provided with a lower connecting part extending downwards, the upper connecting part is connected with the upper end of the breaker body through a fastener, and the lower connecting part is connected with the lower end of the breaker body through a fastener; the middle part of the inner side end of the rectangular plate is provided with a horn-shaped notch.
The upper grounding seat 14 is provided with a grounding column 7, the grounding column 7 is poured in the upper grounding seat 14, and the upper grounding seat 14 is an insulating part; the insulating strength is good, and the safety is high.
The entrance notch of the breaker closing limit baffle 23 is a horn-shaped opening.
The upper grounding seat 14 comprises a transverse long plate-shaped shell, the outer side wall of the long plate-shaped shell is fixed with the upper end of the grounding copper braided wire 6 through an inner hexagon bolt, the upper end of the long plate-shaped shell is provided with a semicircular bulge protruding upwards, and the center of the lower end of the semicircular bulge is provided with a mounting hole of the grounding column 7.
The semicircular bulges are three and evenly distributed along the length direction of the long plate-shaped shell, pressing guide pillar mounting holes are formed in the long plate-shaped shell on two sides below the middle semicircular bulge, and mounting holes for grounding handles 15 are formed in the long plate-shaped shell on the lower portion between the pressing guide pillar mounting holes on two sides.
The rear end of the lower wire outlet seat 8 is provided with a lower wire outlet row 9, the lower wire outlet seat 8 comprises a transverse long plate-shaped shell, the upper end of the long plate-shaped shell is provided with a semicircular bulge protruding upwards, and the center of the lower end of the semicircular bulge is a mounting hole for the lower wire outlet row 9.
The outlet line row 9 comprises a vertical Z-shaped connecting sheet, the lower end of the front upper part of the Z-shaped connecting sheet is provided with a cylindrical slot extending towards the upper grounding seat 14 side, the cylindrical slot is inserted into the mounting hole of the lower outlet line row 9, the front upper part of the Z-shaped connecting sheet is arranged at the rear end of the lower outlet line seat 8, and the upper end and the lower end of the Z-shaped connecting sheet are provided with connecting holes; the connecting hole at the upper end of the Z-shaped connecting sheet is connected with the line outlet end of the circuit breaker through a fastener, and the connecting hole at the lower end of the Z-shaped connecting sheet is a connecting hole of a line outlet cable of the circuit breaker.
The semicircular bulges on the lower wire outlet seat 8 are three and evenly distributed along the length direction of the long plate-shaped shell.
The cylindrical slot of the lower outlet row 9 is poured into the mounting hole of the lower outlet row 9 of the lower outlet base 8; the insulating strength is good, and the safety is high.
The front end of the grounding handle 15 penetrates through a mounting hole of the grounding handle 15 on the grounding seat 14 and is screwed into a threaded hole of a threaded insert 17 on the lower wire outlet seat 8, the front end of the compression guide post is inserted into a guide hole on the lower wire outlet seat 8, the rear part of the compression guide post is a stud, the rear end of the stud is screwed through a mounting threaded hole of the compression guide post on the grounding seat 14 and is screwed with a nut, and an elastic pad and a flat pad are arranged between the nut and the front end face of the grounding seat 14.
The butt joint face of the grounding seat 14 and the outgoing line seat 8 is correspondingly provided with an outward-expanding groove, a pressing spring is sleeved on the pressing guide post between the two outward-expanding grooves, one end of the pressing spring is connected with the bottom face of the outward-expanding groove of the grounding seat 14, and the other end of the pressing spring is connected with the bottom face of the outward-expanding groove of the outgoing line seat 8.
The compression spring can enable the grounding post 7 to be better connected with the lower wire outlet row 9, and the contact pressure of the grounding post is increased. When the grounding handle 15 is rotated to be grounded, the grounding column 7 is better connected with the lower wire outlet row 9; when the grounding handle 15 rotates from the grounding position to the shunting position, the compression spring is restored to the original state by compression.
The threaded insert 17 is cast into the lower outlet socket 8.
The operation of the low-voltage circuit breaker according to the invention is described below with reference to the accompanying drawings.
As shown in fig. 2, when the circuit breaker is in the closing position, the circuit breaker wrench is lifted, the linkage component drives the circuit breaker linkage baffle 11 to move upwards, and finally the operation handle 13 is driven to lift up to block the grounding handle 15, so that the grounding handle cannot rotate, the grounding column 7 cannot be connected with the lower outlet row 9, and the grounding operation cannot be completed.
When the breaker is in the separating brake, the circuit breaker spanner is dialled down, linkage part drive circuit breaker interlocking baffle 11 moves down, finally drive operating handle 13 and fall down, operating handle 13 can not block ground connection handle 15, operating personnel can rotate ground connection handle 15 (operating handle 13 middle part notch is wide enough, 23 outer ends of circuit breaker combined floodgate limit baffle can change over), the position of ground connection handle 15 front end screw rod 53 in the 8 screw holes of base of being qualified for the next round of competitions down moves forward to drive ground connection post 7 and insert the cylindric slot on the base of being qualified for the next round of competitions 9 down, accomplish the ground connection of circuit breaker leading-out terminal.
As shown in fig. 1, when the circuit breaker is at the ground position (after the ground handle 15 rotates clockwise for one or more weeks, the outer end of the circuit breaker closing limit baffle 23 enters the notch in the middle of the operating handle baffle 13), the lower end of the circuit breaker closing limit baffle 23 is lower than the lower end of the operating handle baffle 13, the operating handle baffle 13 cannot rotate upwards, and the interlocking connecting plate 12 cannot move upwards, so that the circuit breaker cannot be closed.
When the circuit breaker moves to the isolation position from the grounding position, namely the grounding handle 15 rotates anticlockwise to separate the grounding column 7 from the lower outlet row 9, meanwhile, the outer end of the circuit breaker closing limiting baffle 23 does not enter a notch in the middle of the operating handle baffle 13, the operating handle baffle 13 can rotate outwards and upwards, and the circuit breaker can be closed.
Through the above operation, when the circuit breaker is in the on-position, the grounding column 7 cannot be connected with the lower outlet row 9, and a grounding loop cannot be formed, so that a loaded grounding switch is prevented from being turned on; the safety of the device is improved. When the circuit breaker is in the opening position, the grounding column 7 can be connected with the lower outlet row 9 to form a grounding loop.
The low-voltage circuit breaker can be applied to an outdoor comprehensive low-voltage distribution box, the outdoor comprehensive low-voltage distribution box comprises an outdoor box body, a load switch is arranged in the outdoor box body, a wire outlet end of the load switch is respectively connected with a wire inlet end and a reactive compensation module of the circuit breaker through a bus, and a current transformer is sleeved on the bus;
the load switch, the bus and the breaker are arranged in the front area of the outdoor box body, the reactive compensation module is arranged in the rear area of the outdoor box body, the load switch is arranged below the left side, the bus comprises a left vertical bus, an upper horizontal bus and a right vertical bus, the lower end of the left vertical bus is connected with a wire outlet end of the load switch, the upper end of the left vertical bus is connected with the left end of the upper horizontal bus, the right end of the upper horizontal bus is connected with the upper end of the right vertical bus, and the lower end of the right vertical bus is connected with a wire inlet end;
the breaker comprises a breaker body, a breaker wrench 50 is arranged on the breaker body, the upper end of the breaker body is a breaker inlet end, the lower end of the breaker body is a breaker outlet end 54, and a tripping operation interlocking mechanism is arranged on the breaker body;
the opening operation interlocking mechanism comprises a breaker interlocking mounting plate 10, the breaker interlocking mounting plate 10 is connected with the front end face of a breaker body, a linkage part of a breaker wrench is arranged on the breaker interlocking mounting plate 10, a breaker interlocking baffle plate 11 is arranged on the outer side of the linkage part, the breaker interlocking baffle plate 11 is in shaft connection with the upper end of an interlocking connecting plate 12, the lower end of the interlocking connecting plate 12 is in shaft connection with the front part of one side of an operation handle baffle plate 13, the rear part of the side of the operation handle baffle plate 13 is in shaft connection with the front end of a connecting plate 22, the rear end of the connecting plate 22 is connected with a lower wire outlet base 8 through a fastener 21, an upper grounding base 14 is arranged in front of the lower wire outlet base 8, and a grounding copper braided wire 6 is arranged on the side, far away from the interlocking connecting plate 12, of the upper grounding base 14; the middle part of the front end of the upper grounding seat 14 is provided with a grounding handle 15, and the lower wire outlet seat 8 is connected with a wire outlet end at the lower end of the breaker body through a lower wire outlet row 9.
The outdoor comprehensive low-voltage distribution box is provided with the left vertical bus, the upper transverse bus and the right vertical bus, so that the components can be conveniently connected, and the connection is reliable.
The outdoor comprehensive low-voltage distribution box circuit breaker is provided with the wire outlet seat, the grounding seat and the grounding copper braided wire and has a discharging function. Therefore, the potential safety hazard of incomplete opening caused by internal faults of the circuit breaker can be eliminated.
The outdoor comprehensive low-voltage distribution box is maintained only by moving the wrench downwards from the switching-on position to the switching-off position, and then the breaker linkage mechanism is opened, so that an operator can rotate clockwise at the switching-off position through the operating handle to drive the grounding column to be connected with the outgoing cable and to be connected with the grounding in the outdoor box body through the grounding copper braided wire, and therefore reverse power transmission of the outgoing cable is avoided, and safety of the device is improved.
The outdoor comprehensive low-voltage distribution box further improves the operation safety of the device by opening the brake operation interlocking mechanism.
The rear end of the left vertical bus is provided with a transverse insulator mounting beam, two ends of the insulator mounting beam are connected with the outdoor box inner body mounting plate, and the front end of the insulator mounting beam is connected with the left vertical bus.
And the reactive compensation module adopts a Static Var Generator (SVG).
The reactive compensation module lower extreme passes through the fastener setting on the mounting panel, and the mounting panel four corners is provided with the connecting piece of upwards buckling, is provided with the mounting hole on the connecting piece, is provided with perpendicular support corresponding to the connecting piece in the outdoor box, erects and is provided with a plurality of connecting holes corresponding to the mounting hole from top to bottom on the support.
The utility model discloses a reactive compensation module, including reactive compensation module inlet wire circuit breaker, mounting panel both ends are provided with the mounting hole corresponding to the connecting hole of erecting the support, the mounting panel front end is along transversely being provided with reactive compensation module inlet wire circuit breaker and arrester, the inlet wire end of reactive compensation module inlet wire circuit breaker links to each other with the generating line, the outlet terminal of reactive compensation module inlet wire circuit breaker links to each other with the wiring end and the arrester of reactive compensation module respectively.
The circuit breaker sets up on the mounting panel, is provided with the vertical plate-like link in the outdoor box of mounting panel both sides, and the mounting panel both sides are provided with the mounting hole, and a plurality of connecting holes of equipartition from top to bottom are corresponding to the mounting hole on the vertical plate-like link.
The right vertical bus comprises an upper transverse plate bent forwards, the rear end of the upper transverse plate is connected with the upper end of a rear vertical plate, the lower end of the rear vertical plate is connected with the upper end of the inclined plate, the front lower end of the inclined plate is connected with the upper end of a front vertical plate, the lower end of the front vertical plate is connected with the wire inlet end of the circuit breaker through a fastener, and the front end of the upper transverse plate is connected with the upper vertical bus through a fastener.
The left vertical bus comprises a vertical plate, the upper end of the vertical plate is an upper transverse plate bent backwards, the rear end of the upper transverse plate is connected with the upper horizontal bus through a fastener, the lower end of the vertical plate is connected with a wire outlet end of the load switch through a fastener, and the current transformer is arranged on the lower portion of the vertical plate.
And a hanging frame is arranged at the upper end of the outdoor box body.
The hanging frame is a n-shaped frame, and two sides of the lower end of the n-shaped frame are connected with the upper end of the outdoor box body through fasteners.
The number of the hanging frames is four, and the four hanging frames are respectively arranged at four corners of the upper end of the outdoor box body.
The outdoor box both sides lower extreme is provided with the air exit.
A transverse grounding bar connecting plate is arranged at the lower end in the outdoor box body, and the front end of the grounding bar connecting plate is connected with an outdoor box body bottom plate through an L-shaped grounding bar connecting plate; the ground connection row connecting plate is arranged below the circuit breaker, and the ground copper braided wire 6 is connected with the ground connection row connecting plate.
An exhaust fan can be arranged to dissipate heat of the SVG.
The low-voltage circuit breaker can be applied to a low-voltage distribution box, the low-voltage distribution box comprises an outdoor box body, a load switch is arranged in the outdoor box body, a wire outlet end of the load switch is respectively connected with a wire inlet end and a reactive compensation module of the circuit breaker through a bus, and a current transformer is sleeved on the bus; the reactive compensation module is characterized by comprising an upper mounting transverse plate and a lower mounting transverse plate, wherein one side of the upper mounting transverse plate is provided with a capacitor, and two sides of the lower mounting transverse plate are respectively provided with a capacitor; a composite switch mounting vertical plate is arranged in front of the capacitor, a branch incoming line breaker is arranged on the upper front portion of the composite switch mounting vertical plate, a composite switch 90 is arranged on the lower front portion of the composite switch mounting vertical plate, a connecting transverse plate is arranged in the middle of the rear portion of the branch incoming line breaker, transverse strip-shaped holes are formed in portions of two sides of the connecting transverse plate, which are exposed out of two sides of the branch incoming line breaker, and mounting holes are formed in the composite switch mounting vertical plate corresponding to the transverse strip-shaped holes;
the lower end of the vertical plate for installing the composite switch is bent forwards, mounting holes are formed in two ends of the bent part, and connecting holes are formed in the transverse plate corresponding to the mounting holes;
the lower end of the capacitor is provided with a capacitor mounting plate, the cross section of the capacitor mounting plate is shaped like a Chinese character 'ji', the bottom plates at two sides of the capacitor mounting plate are provided with connecting holes, and the mounting transverse plate is provided with mounting holes corresponding to the connecting holes;
connecting plates are arranged on two sides of the lower end of the capacitor, connecting holes are formed in the front and rear parts of the connecting plates, and mounting holes are formed in the transverse plate on the capacitor mounting plate corresponding to the connecting holes;
the four corners of the installation transverse plate are provided with upwards bent connecting pieces, the connecting pieces are provided with installation holes, a vertical support is arranged in the outdoor box body corresponding to the connecting pieces, and the vertical support is provided with a plurality of connecting holes corresponding to the installation holes from top to bottom;
the capacitor is connected with the outlet end of the branch inlet line breaker through the compound switch, the inlet end of the branch inlet line breaker is connected with the outlet end of the main inlet line breaker, and the inlet end of the main inlet line breaker is connected with the bus.
The low-voltage distribution box is convenient for mounting and arranging all parts of the reactive compensation module through mounting the transverse plate, the vertical plate, the connecting transverse plate and the capacitor mounting plate, and is reliable in connection.
The upper end and the lower end of the combination switch 90 are provided with connecting holes, and the combination switch mounting vertical plate 89 is provided with mounting holes 99 corresponding to the connecting holes. The combination switch is fixed on the combination switch mounting vertical plate 89 through the fastener, the connecting hole and the mounting hole.
The breaker comprises a breaker body, a breaker wrench 50 is arranged on the breaker body, the upper end of the breaker body is a breaker inlet end, the lower end of the breaker body is a breaker outlet end 54, and a tripping operation interlocking mechanism is arranged on the breaker body;
the opening operation interlocking mechanism comprises a breaker interlocking mounting plate 10, the breaker interlocking mounting plate 10 is connected with the front end face of a breaker body, a linkage part of a breaker wrench is arranged on the breaker interlocking mounting plate 10, a breaker interlocking baffle plate 11 is arranged on the outer side of the linkage part, the breaker interlocking baffle plate 11 is in shaft connection with the upper end of an interlocking connecting plate 12, the lower end of the interlocking connecting plate 12 is in shaft connection with the front part of one side of an operation handle baffle plate 13, the rear part of the side of the operation handle baffle plate 13 is in shaft connection with the front end of a connecting plate 22, the rear end of the connecting plate 22 is connected with a lower wire outlet base 8 through a fastener 21, an upper grounding base 14 is arranged in front of the lower wire outlet base 8, and a grounding copper braided wire 6 is arranged on the side, far away from the interlocking connecting plate 12, of the upper grounding base 14; the middle part of the front end of the upper grounding seat 14 is provided with a grounding handle 15, and the lower wire outlet seat 8 is connected with a wire outlet end at the lower end of the breaker body through a lower wire outlet row 9.
The low-voltage distribution box circuit breaker is provided with the wire outlet seat, the grounding seat and the grounding copper braided wire, and has a discharging function. Therefore, the potential safety hazard of incomplete opening caused by internal faults of the circuit breaker can be eliminated.
The low-voltage distribution box is maintained only by moving the wrench downwards from the switching-on position to the switching-off position, and then the breaker linkage mechanism is opened, so that an operator can rotate clockwise at the switching-off position through the operating handle to drive the grounding column to be connected with the outgoing cable and to be connected with the grounding in the outdoor box body through the grounding copper braided wire, and therefore reverse power transmission of the outgoing cable is avoided, and safety of the device is improved.
The low-voltage distribution box further improves the operation safety of the device by opening the brake to operate the interlocking mechanism.
Load switch, generating line and circuit breaker set up in outdoor box front portion region, and reactive compensation module sets up in the rear portion region of outdoor box, and load switch sets up in the left side below, and the generating line includes that left side erects generating line, last generating line and right side and erects the generating line, and left side erects the generating line lower extreme and links to each other with the load switch terminal outgoing lines, and left side erects the generating line upper end and goes up the generating line left end and links to each other, goes up the generating line right-hand member and erects the generating line upper end with the right side and link to each other, and right side erects the generating line lower extreme and links to each other with the circuit breaker inlet wire end. The outdoor distribution box is provided with the left vertical bus, the upper horizontal bus and the right vertical bus, so that the components can be conveniently connected, and the connection is reliable.
The cross section of the connecting transverse plate 98 is shaped like a Chinese character 'ji' with a vertical opening facing forward.
The front and rear ends of the mounting transverse plate 97 are bent downwards; the structural strength is high.
The rear end of the left vertical bus is provided with a transverse insulator mounting beam, two ends of the insulator mounting beam are connected with the outdoor box inner body mounting plate, and the front end of the insulator mounting beam is connected with the left vertical bus.
The mounting panel is provided with between two perpendicular support upper ends of reactive compensation module front side, and the mounting panel is the nearly font mounting panel of backward protrusion, and the mounting panel both ends are provided with the mounting hole corresponding to the connecting hole of erecting the support, and the mounting panel front end is along transversely being provided with reactive compensation module total inlet wire circuit breaker and arrester, and reactive compensation module total inlet wire circuit breaker's leading-out terminal links to each other with the arrester.
The circuit breaker sets up on the mounting panel, is provided with the vertical plate-like link in the outdoor box of mounting panel both sides, and the mounting panel both sides are provided with the mounting hole, and a plurality of connecting holes of equipartition from top to bottom are corresponding to the mounting hole on the vertical plate-like link.
The right vertical bus comprises an upper transverse plate bent forwards, the rear end of the upper transverse plate is connected with the upper end of a rear vertical plate, the lower end of the rear vertical plate is connected with the upper end of the inclined plate, the front lower end of the inclined plate is connected with the upper end of a front vertical plate, the lower end of the front vertical plate is connected with the wire inlet end of the circuit breaker through a fastener, and the front end of the upper transverse plate is connected with the upper vertical bus through a fastener.
The left vertical bus comprises a vertical plate, the upper end of the vertical plate is an upper transverse plate bent backwards, the rear end of the upper transverse plate is connected with the upper horizontal bus through a fastener, the lower end of the vertical plate is connected with a wire outlet end of the load switch through a fastener, and the current transformer is arranged on the lower portion of the vertical plate.
And a hanging frame is arranged at the upper end of the outdoor box body.
The hanging frame is a n-shaped frame, and two sides of the lower end of the n-shaped frame are connected with the upper end of the outdoor box body through fasteners.
The number of the hanging frames is four, and the four hanging frames are respectively arranged at four corners of the upper end of the outdoor box body.
The outdoor box both sides lower extreme is provided with the air exit.
A transverse grounding bar connecting plate is arranged at the lower end in the outdoor box body, and the front end of the grounding bar connecting plate is connected with an outdoor box body bottom plate through an L-shaped grounding bar connecting plate; the ground connection row connecting plate is arranged below the circuit breaker, and the ground copper braided wire 6 is connected with the ground connection row connecting plate.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (10)
1. The low-voltage circuit breaker comprises a circuit breaker body, wherein a circuit breaker wrench (50) is arranged on the circuit breaker body, the upper end of the circuit breaker body is a circuit breaker wire inlet end, and the lower end of the circuit breaker body is a circuit breaker wire outlet end (54), and the low-voltage circuit breaker is characterized in that a brake separating operation interlocking mechanism is arranged on the circuit breaker body;
the opening operation interlocking mechanism comprises a breaker interlocking mounting plate (10), the breaker interlocking mounting plate (10) is connected with the front end face of a breaker body, a linkage part of a breaker wrench is arranged on the breaker interlocking mounting plate (10), a breaker interlocking baffle (11) is arranged on the outer side of the linkage part, the breaker interlocking baffle (11) is in shaft connection with the upper end of an interlocking connecting plate (12), the lower end of the interlocking connecting plate (12) is in shaft connection with the front part of one side of an operating handle baffle (13), the rear part of the side of the operating handle baffle (13) is in shaft connection with the front end of a connecting plate (22), the rear end of the connecting plate (22) is connected with a lower wire outlet seat (8) through a fastener (21), an upper grounding seat (14) is arranged in front of the lower wire outlet seat (8), and a copper braided wire (6) is arranged on the side, far away from the interlocking connecting plate (12), of the upper grounding seat (14); the middle part of the front end of the upper grounding seat (14) is provided with a grounding handle (15), and the lower wire outlet seat (8) is connected with a wire outlet end at the lower end of the breaker body through a lower wire outlet row (9).
2. Low voltage circuit breaker as claimed in claim 1, characterized in that said linkage member comprises a vertical square plate (61) having inside a clamping plate (60) extending sideward, the circuit breaker wrench (50) being placed in a notch of the clamping plate; vertical strip-shaped openings (62) are formed in the vertical square plates, transverse guide pillars on the breaker interlocking mounting plate (10) penetrate through the vertical strip-shaped openings, and the vertical square plates are arranged between the breaker interlocking mounting plate (10) and the breaker body.
3. The low-voltage circuit breaker according to claim 1, characterized in that the breaker interlocking mounting plate (10) is a vertical rectangular plate, the upper end and the lower end of the rectangular plate are bent towards the side of the breaker body, the upper end is bent towards the inner side and is provided with an upper connecting part extending upwards, the lower end is bent towards the inner side and is provided with a lower connecting part extending downwards, the upper connecting part is connected with the upper end of the breaker body through a fastener, and the lower connecting part is connected with the lower end of the breaker body through a fastener; the middle part of the inner side end of the rectangular plate is provided with a horn-shaped notch (55).
4. Low voltage circuit breaker as claimed in claim 1, characterized in that the upper grounding base (14) is provided with a grounding stud (7), the grounding stud (7) being cast in the upper grounding base (14), the upper grounding base (14) being an insulator.
5. The low-voltage circuit breaker according to claim 1, characterized in that the handle stop (13) is a U-shaped plate, the upper end of the middle of the U-shaped plate is provided with a circuit breaker closing limit stop (23) entering the notch (51), the circuit breaker closing limit stop (23) is vertical Z-shaped, and the front upper end of the Z-shaped circuit breaker closing limit stop (23) is connected with the grounding handle (15).
6. Low voltage circuit breaker as claimed in claim 1, characterized in that said upper grounding seat (14) comprises a transversal elongated plate-like housing fixed to the upper end of the grounding copper braided wire (6) by means of hexagon socket head cap screws, the upper end of the elongated plate-like housing having a semicircular projection projecting upwards, the lower center of the semicircular projection being the mounting hole of the grounding stud (7).
7. The low voltage circuit breaker as claimed in claim 6, wherein said semicircular protrusions are three ones uniformly distributed along the length direction of said elongated plate-like housing, and the elongated plate-like housing on both sides below the central semicircular protrusion is provided with mounting holes for pressing guide posts (52), and the elongated plate-like housing on the lower portion between the mounting holes for the pressing guide posts on both sides is provided with mounting holes for grounding handle (15).
8. Low voltage circuit breaker as claimed in claim 1, characterized in that the lower outlet block (8) is provided at its rear end with a lower outlet row (9), the lower outlet block (8) comprising a transversal elongated plate-like housing having at its upper end a semicircular projection projecting upwards, the lower end of the semicircular projection being centred on the mounting hole of the lower outlet row (9).
9. The low-voltage circuit breaker according to claim 1, characterized in that the lower outlet row (9) comprises a vertical Z-shaped connecting piece, the lower end of the front upper part of the Z-shaped connecting piece is provided with a cylindrical slot (56) extending towards the upper grounding seat (14), the cylindrical slot is inserted into the mounting hole of the lower outlet row (9), the front upper part of the Z-shaped connecting piece is arranged at the rear end of the lower outlet seat (8), and the upper end and the lower end of the Z-shaped connecting piece are provided with connecting holes; the connecting hole at the upper end of the Z-shaped connecting sheet is connected with the line outlet end of the circuit breaker through a fastener, and the connecting hole at the lower end of the Z-shaped connecting sheet is a connecting hole of a line outlet cable of the circuit breaker.
10. The low-voltage circuit breaker as claimed in claim 1, characterized in that the front end of the grounding handle (15) is screwed into the threaded hole of the threaded insert (17) on the lower outlet (8) through the mounting hole of the grounding handle (15) on the upper grounding seat (14), the front end of the compression guide post is inserted into the guide hole on the lower outlet (8), the rear end of the compression guide post is a stud, the rear end of the stud is screwed through the mounting threaded hole of the compression guide post on the upper grounding seat (14) and is screwed with a nut (57), and an elastic pad and a flat pad are arranged between the nut and the front end surface of the upper grounding seat (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910856703.7A CN110767509B (en) | 2019-09-11 | 2019-09-11 | Low-voltage circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910856703.7A CN110767509B (en) | 2019-09-11 | 2019-09-11 | Low-voltage circuit breaker |
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| CN110767509A CN110767509A (en) | 2020-02-07 |
| CN110767509B true CN110767509B (en) | 2021-08-24 |
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| CN110767509A (en) | 2020-02-07 |
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