CN112750665A - Modular frame circuit breaker - Google Patents
Modular frame circuit breaker Download PDFInfo
- Publication number
- CN112750665A CN112750665A CN202110073275.8A CN202110073275A CN112750665A CN 112750665 A CN112750665 A CN 112750665A CN 202110073275 A CN202110073275 A CN 202110073275A CN 112750665 A CN112750665 A CN 112750665A
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- Prior art keywords
- insulating
- insulating box
- contact
- circuit breaker
- hinged
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- 230000003068 static effect Effects 0.000 claims abstract description 57
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims description 31
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 description 23
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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Classifications
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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
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
- H01H71/0271—Mounting several complete assembled circuit breakers together
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- 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
-
- 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
- H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
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- Gas-Insulated Switchgears (AREA)
Abstract
The invention relates to a modularized frame circuit breaker, which comprises a frame shell and a plurality of groups of single-phase modules fixed in the frame shell, wherein each single-phase module comprises an insulating box, and a moving contact, a lower static contact, an upper static contact, a transmission plate and an insulating pull rod which are arranged in the insulating box, a vacuumizing hole is formed in the insulating box, the lower end of the moving contact is hinged with the insulating box, the rear ends of the lower static contact and the upper static contact extend out of the insulating box and the frame shell, the front end of the lower static contact is electrically connected with the moving contact, the front end of the upper static contact is arranged opposite to the moving contact, the transmission plate is obliquely arranged, the middle part of the transmission plate is hinged with the insulating box through a hinge shaft, the rear end of the transmission plate is hinged with the moving contact, the front end of the transmission plate is hinged with the rear end of. The device has the advantages of simple structure, safety, reliability, strong adaptability and convenient maintenance.
Description
Technical Field
The invention relates to a circuit breaker, in particular to a modular frame circuit breaker.
Background
The frame circuit breaker is used as common equipment of a power supply and distribution system and plays important roles in power distribution and protection. However, the existing frame circuit breaker has the following problems in practical application: 1. the structure is more complex, the volume is larger, and the maintenance is inconvenient; 2. arcing is easy to generate, safety is poor, and the service life of equipment is influenced; 3. the sealing performance is poor, and the sealing device cannot adapt to severe environments.
Disclosure of Invention
The invention aims to provide a modular frame circuit breaker which has the advantages of simple structure, low cost, safety, reliability, strong adaptability and convenience in maintenance.
In order to solve the above problems in the prior art, the present invention provides a modular frame circuit breaker, including a frame housing and a plurality of sets of single-phase modules fixed in the frame housing, the single-phase module comprises an insulating box, and a moving contact, a lower static contact, an upper static contact, a transmission plate and an insulating pull rod which are arranged in the insulating box, the insulating box is provided with a vacuumizing hole, the lower end of the moving contact is hinged with the insulating box, the rear ends of the lower static contact and the upper static contact extend out of the insulating box and the frame shell, the front end of the lower static contact is electrically connected with the moving contact, the front end of the upper static contact is arranged opposite to the moving contact, the transmission plate is obliquely arranged, the middle of the transmission plate is hinged with the insulation box through a hinge shaft, the rear end of the transmission plate is hinged with the moving contact, the front end of the transmission plate is hinged with the rear end of the insulation pull rod, and the front end of the insulation pull rod is connected with an operating mechanism arranged on the outer side of the insulation box.
Further, the moving contact comprises an insulation hinge seat, the lower end of the insulation hinge seat is hinged to an insulation box, a plurality of insulation grooves distributed at intervals are formed in the rear side of the upper half portion of the insulation hinge seat, a conducting strip is arranged in each insulation groove, the rear side of each conducting strip protrudes out of the insulation hinge seat and is opposite to the upper static contact, and the lower end of each conducting strip is connected with the lower static contact through a cable.
Further, the modular frame circuit breaker of the invention is characterized in that the rear side of the upper half part of the conducting strip is provided with a contact protrusion, the front side of the upper half part of the conducting strip is provided with a discharge protrusion, the bottom of the upper half part of the insulating groove is provided with a discharge groove corresponding to the discharge protrusion, two side walls of the discharge groove are provided with symmetrically distributed convex blocks, and springs for jacking the conducting strip are respectively arranged in the discharge groove and at the upper and lower side positions of the convex blocks.
Furthermore, the moving contact further comprises a left clamping plate, a right clamping plate and a U-shaped limiting part, wherein the left clamping plate and the right clamping plate are correspondingly fixed on the left side and the right side of the insulating hinge seat through screws, a left limiting hole and a right limiting hole are correspondingly arranged on the left clamping plate and the right clamping plate, and two side plates of the limiting part are correspondingly fixed on the outer sides of the left clamping plate and the right clamping plate through screws; the upper half part of the insulating hinged seat is provided with an arc-shaped groove with a rear opening, the conducting plate is provided with a fixing hole, a fixing shaft in the arc-shaped groove penetrates through the fixing hole, and the left end and the right end of the fixing shaft are correspondingly clamped in the left limiting hole and the right limiting hole.
Further, the rear side of the lower half part of the insulating hinge seat is provided with an accommodating groove, and the front side of the upper half part of the insulating hinge seat is provided with a hinge groove; the front end of the lower static contact is positioned in the containing groove, the rear end of the transmission plate is positioned in the hinge groove and is hinged with a connecting shaft penetrating through the insulating hinge seat, and a limiting head clamped between the insulating hinge seat and the right clamping plate is fixed at the right end of the connecting shaft.
Further, the lower fixed contact comprises a first contact body and a first fixing ring which are connected into a whole, a first sealing groove is formed in the rear side of the first fixing ring, the first fixing ring is fixed on the insulating box through screws, and a first sealing ring extruded on the insulating box is arranged in the first sealing groove.
Further, the modular frame circuit breaker of the invention is characterized in that the upper fixed contact comprises a second contact body and a second fixing ring which are connected into a whole, a second sealing groove is arranged at the rear side of the second fixing ring, the second fixing ring is fixed on the insulating box through a screw, and a second sealing ring extruded on the insulating box is arranged in the second sealing groove.
Furthermore, the modular frame circuit breaker is characterized in that the insulating pull rod comprises a pull rod body, a corrugated pipe and an annular fixing piece, the pull rod body penetrates through the corrugated pipe and the fixing piece, two ends of the pull rod body are correspondingly hinged with the transmission plate and the operating mechanism, the corrugated pipe penetrates through the front side wall of the insulating box from inside to outside, the rear end of the corrugated pipe is hermetically welded with the pull rod body through a plugging disc, the front end of the corrugated pipe is hermetically welded with the fixing piece, the fixing piece is fixed on the outer side of the insulating box through a screw, a third sealing groove is formed in the rear side of the fixing piece, and a third sealing ring extruded on the insulating box is arranged in the third sealing groove.
Furthermore, the modular frame circuit breaker comprises an upper driving shaft and a lower driving shaft, wherein an upper synchronous crank arm and a lower synchronous crank arm are correspondingly fixed on the upper driving shaft and the lower driving shaft, a linkage plate is hinged between the upper synchronous crank arm and the lower synchronous crank arm, and two driving crank arms are respectively fixed on the upper driving shaft and the lower driving shaft; the single-phase module is provided with four groups, and the insulating pull rods of the four groups of single-phase modules are correspondingly hinged with the four driving crank arms of the operating mechanism.
Further, the front end of the lower static contact is fixedly provided with a connecting seat, the connecting seat is fixedly connected with an insulating box, and the rear side of the frame shell is respectively provided with a reinforcing member fixedly connected with the lower static contact and the upper static contact; the insulating box comprises a front cover and a rear cover which are mutually buckled, the front cover and the rear cover are fixedly connected through bolts, and a sealing gasket is arranged between the front cover and the rear cover.
Compared with the prior art, the modular frame circuit breaker has the following advantages: the invention sets a frame shell and a plurality of groups of single-phase modules fixed in the frame shell, so that the single-phase modules are provided with an insulating box, a moving contact, a lower static contact, an upper static contact, a transmission plate and an insulating pull rod which are positioned in the insulating box, a vacuumizing hole is arranged on the insulating box, the lower end of the moving contact is hinged with the insulating box, the rear ends of the lower static contact and the upper static contact extend out of the insulating box and the frame shell, the front end of the lower static contact is electrically connected with the moving contact, the front end of the upper static contact is arranged opposite to the moving contact, the transmission plate is obliquely arranged, the middle part of the transmission plate is hinged with the insulating box through a hinge shaft, the rear end of the transmission plate is hinged with the moving contact, the front end of the transmission plate is hinged with the rear end of the insulating pull rod, and the front end of the insulating pull rod is. Therefore, the modular frame circuit breaker is simple in structure, low in cost, safe, reliable, strong in adaptability and convenient to maintain. In practical application, the inlet and outlet wires are correspondingly connected with the lower static contact and the upper static contact, and the insulating pull rod pushes and pulls the transmission plate through controlling the operating mechanism, so that the movable contact and the upper static contact can be separated or contacted, and the purpose of opening or closing is achieved. The double protection of the moving contact, the lower fixed contact, the upper fixed contact, the transmission plate and the insulating pull rod is realized by arranging the frame shell and the insulating box, so that the safety and reliability are improved, and the adaptability to severe environments is improved; the insulating box is vacuumized through the vacuumizing hole, so that arcing in the opening and closing process can be effectively avoided; through the modular design of single-phase module, improved the compactness of structure on the one hand, reduced equipment volume and occupation space, on the other hand has improved the convenience of maintaining, changing functional unit.
A modular frame circuit breaker according to the present invention will be described in further detail with reference to the embodiments shown in the drawings.
Drawings
Fig. 1 is a front view of a modular frame circuit breaker of the present invention;
fig. 2 is a rear view of a modular frame circuit breaker of the present invention;
FIG. 3 is a view taken along line A-A of FIG. 1;
fig. 4 is a front view of a single phase module in a modular frame circuit breaker of the present invention;
fig. 5 is a rear view of a single phase module in a modular frame circuit breaker of the present invention;
fig. 6 is a perspective view of a single phase module in a modular frame circuit breaker of the present invention;
FIG. 7 is a view taken along line B-B of FIG. 4;
fig. 8 is a first diagram showing the positional relationship between a moving contact and a lower fixed contact in a modular frame circuit breaker according to the present invention;
fig. 9 is a second diagram of the positional relationship between the moving contact and the lower stationary contact in the modular frame circuit breaker according to the present invention;
fig. 10 is an exploded view of the movable contacts of a modular frame circuit breaker of the present invention;
fig. 11 is a left side view of an insulated hinge mount in a modular frame circuit breaker of the present invention;
fig. 12 is a rear view of an insulated hinge mount in a modular frame circuit breaker of the present invention;
FIG. 13 is a view from the C-C direction in FIG. 12;
FIG. 14 is a view from direction D-D of FIG. 12;
fig. 15 is a left side view of a conductive sheet in a modular frame circuit breaker of the present invention;
fig. 16 is a rear view of a conductive sheet in a modular frame circuit breaker of the present invention;
fig. 17 is a perspective view of a lower stationary contact in a modular frame circuit breaker according to the present invention;
fig. 18 is a perspective view of an upper stationary contact in a modular frame circuit breaker of the present invention;
fig. 19 is a perspective view of a fixing member of an insulating rod in a modular frame circuit breaker according to the present invention.
Detailed Description
First, it should be noted that, the directional terms such as up, down, left, right, front, rear, etc. described in the present invention are only described with reference to the accompanying drawings for understanding, and are not intended to limit the technical solution and the claimed scope of the present invention.
As shown in fig. 1 to 19, an embodiment of a modular frame circuit breaker of the present invention includes a frame housing 1 and four sets of single-phase modules 2 fixed in the frame housing 1. The single-phase module 2 is provided with an insulation box 3, a movable contact 4, a lower static contact 5, an upper static contact 6, a transmission plate 7 and an insulation pull rod 8 which are arranged in the insulation box 3. The vacuum-pumping hole 31 is formed in the insulating box 3, the lower end of the movable contact 4 is hinged to the insulating box 3, the rear ends of the lower static contact 5 and the upper static contact 6 extend out of the insulating box 3 and the frame shell 1, the front end of the lower static contact 5 is electrically connected with the movable contact 4, and the front end of the upper static contact 6 is arranged opposite to the movable contact 4. The transmission plate 7 is obliquely arranged, the middle of the transmission plate 7 is hinged with the insulation box 3 through a hinge shaft 71, the rear end of the transmission plate 7 is hinged with the movable contact 4, the front end of the transmission plate 7 is hinged with the rear end of the insulation pull rod 8, and the front end of the insulation pull rod 8 is connected with an operating mechanism 9 arranged on the outer side of the insulation box 3.
The modular frame circuit breaker is simple in structure, low in cost, safe, reliable, strong in adaptability and convenient to maintain. In practical application, the inlet and outlet wires are correspondingly connected with the lower static contact 5 and the upper static contact 6, and the insulating pull rod 8 pushes and pulls the transmission plate 7 through controlling the operating mechanism 9, so that the movable contact 4 can be separated from or contacted with the upper static contact 6, and the purpose of switching on or switching off is achieved. The double protection of the movable contact 4, the lower fixed contact 5, the upper fixed contact 6, the transmission plate 7 and the insulating pull rod 8 is realized by arranging the frame shell 1 and the insulating box 3, so that the safety and reliability are improved, and the adaptability to severe environments is improved; the insulating box 3 is vacuumized through the vacuumizing hole 31, so that arcing in the opening and closing process can be effectively avoided; through the modular design of the single-phase module 2, on one hand, the compactness of the structure is improved, the equipment volume and the occupied space are reduced, and on the other hand, the convenience of maintaining and replacing functional parts is improved. In practical application, the present invention generally arranges the operating mechanism 9 with an upper driving shaft 91 and a lower driving shaft 92, and fixes an upper synchronization crank arm 93 and a lower synchronization crank arm 94 on the upper driving shaft 91 and the lower driving shaft 92 correspondingly, and hinges a linkage plate 95 between the upper synchronization crank arm 93 and the lower synchronization crank arm 94, and fixes two driving crank arms 96 on the upper driving shaft 91 and the lower driving shaft 92 respectively, so that the four driving crank arms 96 are hinged with the insulating pull rods 8 of the four sets of single-phase modules 2 correspondingly, so as to improve the synchronism of the opening and closing actions of the four sets of single-phase modules. It should be noted that the single-phase module 2 is not limited to be provided with four groups, and may be provided with two, three or more groups as required; the operating mechanism 9 is not limited to the above-mentioned structure, and other structures may be adopted.
As an optimized solution, the present embodiment provides the movable contact 4 with the insulating hinge seat 41, and allows the lower end of the insulating hinge seat 41 to be hinged to the insulating case 3. A plurality of insulation slots 411 are arranged at intervals at the rear side of the upper half of the insulation hinge base 41, a conductive plate 42 is arranged in the insulation slots 411, the rear side of the conductive plate 42 protrudes out of the insulation hinge base 41 and is arranged opposite to the upper static contact 6, and the lower end of the conductive plate 42 is connected with the lower static contact 5 through a cable. The moving contact 4 with the structure has the advantages of simple structure, safety and reliability, wherein the conducting strip 42 not only serves as a conducting piece, but also serves as an arc extinguishing grid piece, so that the possibility of arc flashover is reduced, the safety and reliability are enhanced, and the service life of the circuit breaker is prolonged. Meanwhile, in the present embodiment, the contact protrusion 421 is disposed at the rear side of the upper half portion of the conductive plate 42, the discharge protrusion 422 is disposed at the front side of the upper half portion of the conductive plate 42, the discharge groove 412 corresponding to the discharge protrusion 422 is disposed at the bottom of the upper half portion of the insulating groove 411, the protrusions 413 symmetrically distributed on the two side walls of the discharge groove 412 are disposed, and the springs for pressing the conductive plate 42 are disposed in the discharge groove 412 and at the upper and lower positions of the protrusions 413, respectively. The structure improves the reliability of opening and closing by arranging the contact protrusion 421, further reduces the possibility of generating flashover by arranging the discharge protrusion 422, the discharge groove 412 and the protrusion block 413, enhances the contact tightness of the conducting strip 42 and the upper static contact 6 during closing by arranging the spring, and further improves the safety and reliability.
As an optimized solution, the present embodiment provides the movable contact 4 with a left clamp plate 43, a right clamp plate 44, and a U-shaped stopper 45. The left clamping plate 43 and the right clamping plate 44 are correspondingly fixed on the left side and the right side of the insulating hinged seat 41 through screws, a left limiting hole 431 and a right limiting hole 441 are correspondingly arranged on the left clamping plate 43 and the right clamping plate 44, and two side plates of the limiting piece 45 are correspondingly fixed on the outer sides of the left clamping plate 43 and the right clamping plate 44 through screws. An arc-shaped groove 414 with a rear opening is formed in the upper half portion of the insulating hinge base 41, a fixing hole is formed in the conducting strip 42, a fixing shaft 423 located in the arc-shaped groove 414 penetrates through the fixing hole, and the left end and the right end of the fixing shaft 423 are correspondingly clamped in the left limiting hole 431 and the right limiting hole 441 and are axially limited through two side plates of the limiting part 45. The structure has the advantages of convenient disassembly, assembly and maintenance. Meanwhile, the present embodiment provides a receiving groove 415 at the rear side of the lower half of the insulating hinge seat 41, and a hinge groove 416 at the front side of the upper half of the insulating hinge seat 41. And the front end of the lower fixed contact 5 is positioned in the accommodating groove 415, and the rear end of the transmission plate 7 is positioned in the hinge groove 416 and is hinged with the connecting shaft 46 penetrating through the insulating hinge seat 41. Wherein, a limiting head 461 clamped between the insulating hinge seat 41 and the right clamping plate 44 is fixed at the right end of the connecting shaft 46. This arrangement enhances the compactness of the structure and further reduces the volume.
As a specific implementation manner, the lower static contact 5 adopts the following structure: a first contact body 51 and a first fixing ring 52 are provided integrally, and a first seal groove 53 is provided on the rear side of the first fixing ring 52. The first fixing ring 52 is fixed to the insulating case 3 by screws, and a first seal ring pressed against the insulating case 3 is provided in the first seal groove 53. The lower static contact 5 has the advantages of simple structure, convenient assembly and disassembly and reliable sealing. In practical application, the invention usually embeds the screws for installing the lower static contact 5 in the insulating box 3 to improve the convenience of operation, and coats the sealant at the joint of the first fixing ring 52 and the insulating box 3 to improve the reliability of sealing. Similarly, the upper static contact 6 of the present embodiment adopts the following structure: a second contact body 61 and a second fixing ring 62 are integrally provided, and a second seal groove 63 is provided on the rear side of the second fixing ring 62. The second fixing ring 62 is fixed to the insulating case 3 by screws, and a second seal ring pressed against the insulating case 3 is disposed in the second seal groove 63. The upper static contact 6 also has the advantages of simple structure, convenient assembly and disassembly and reliable sealing. In practical application, the insulating box 3 is embedded with the screws for installing the upper static contact 6 so as to improve the convenience of operation, and the joint of the second fixing ring 62 and the insulating box 3 is coated with the sealant so as to improve the reliability of sealing. It should be noted that the screws for installing the lower stationary contact 5 and the upper stationary contact 6 are not limited to be embedded in the insulating box 3, and other connection structures with the same function may be adopted.
As a specific embodiment, the invention adopts the following structure for the insulating pull rod 8: the corrugated pipe type sealing device comprises a pull rod body 81, a corrugated pipe 82 and an annular fixing piece 83, wherein the pull rod body 81 penetrates through the corrugated pipe 82 and the fixing piece 83, two ends of the pull rod body 81 are correspondingly hinged to a transmission plate 7 and an operating mechanism 9, the corrugated pipe 82 penetrates through the front side wall of an insulating box 3 from inside to outside, the rear end of the corrugated pipe 82 is in sealing welding with the pull rod body 81 through a blocking disc 84, the front end of the corrugated pipe 82 is in sealing welding with the fixing piece 83, the fixing piece 83 is fixed on the outer side of the insulating box 3 through screws, a third sealing groove 831 is formed in the rear side of the fixing piece 83, and a third sealing ring extruded on the insulating box 3 is arranged in. The insulating pull rod 8 arranged in the structure not only realizes the push-pull function, but also ensures the sealing performance of the insulating box 3, and has the advantages of simple structure, convenient assembly and disassembly and good integrity.
It should be noted that, in practical applications, in the present invention, the connection base 54 is fixed at the front end of the lower static contact 5, the connection base 54 is fixedly connected to the insulation box 3, and the reinforcement members 11 fixedly connected to the lower static contact 5 and the upper static contact 6 are respectively arranged at the rear side of the frame housing 1, so as to enhance the structural stability and prevent the first fixing ring 52 and the second fixing ring 62 from being damaged by the opening and closing operation. In order to improve the convenience of assembly and disassembly, the invention provides the insulating box 3 with a front cover 32 and a rear cover 33 which are mutually buckled, the front cover 32 and the rear cover 33 are fixedly connected through bolts, and a sealing gasket is arranged between the front cover 32 and the rear cover 33.
The above examples are only for describing the preferred embodiments of the present invention, and do not limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the invention defined by the claims without departing from the design concept of the present invention.
Claims (10)
1. A modularized frame circuit breaker is characterized by comprising a frame shell (1) and a plurality of groups of single-phase modules (2) fixed in the frame shell (1), wherein each single-phase module (2) comprises an insulating box (3), a movable contact (4), a lower static contact (5), an upper static contact (6), a transmission plate (7) and an insulating pull rod (8) which are arranged in the insulating box (3), a vacuumizing hole (31) is formed in the insulating box (3), the lower end of the movable contact (4) is hinged with the insulating box (3), the rear ends of the lower static contact (5) and the upper static contact (6) extend out of the insulating box (3) and the frame shell (1), the front end of the lower static contact (5) is electrically connected with the movable contact (4), the front end of the upper static contact (6) is arranged opposite to the movable contact (4), the transmission plate (7) is obliquely arranged, the middle part of the transmission plate (7) is hinged with the insulating box (3) through a hinge shaft (71), the rear end of the transmission plate (7) is hinged with the moving contact (4), the front end of the transmission plate (7) is hinged with the rear end of the insulating pull rod (8), and the front end of the insulating pull rod (8) is connected with an operating mechanism (9) arranged on the outer side of the insulating box (3).
2. The modular frame circuit breaker as claimed in claim 1, wherein the movable contact (4) comprises an insulating hinge base (41), a lower end of the insulating hinge base (41) is hinged to the insulating box (3), a plurality of insulating slots (411) are formed in the rear side of the upper half portion of the insulating hinge base (41) and are distributed at intervals, a conductive plate (42) is arranged in each insulating slot (411), the rear side of the conductive plate (42) protrudes out of the insulating hinge base (41) and is arranged opposite to the upper static contact (6), and the lower end of the conductive plate (42) is connected with the lower static contact (5) through a cable.
3. The modular frame circuit breaker as claimed in claim 2, wherein the rear side of the upper half of the conductive plate (42) is provided with a contact protrusion (421), the front side of the upper half of the conductive plate (42) is provided with a discharge protrusion (422), the bottom of the upper half of the insulating slot (411) is provided with a discharge slot (412) corresponding to the discharge protrusion (422), two side walls of the discharge slot (412) are provided with symmetrically distributed protrusions (413), and springs for pressing the conductive plate (42) are respectively arranged in the discharge slot (412) and at the upper and lower sides of the protrusions (413).
4. The modular frame circuit breaker as claimed in claim 3, wherein the movable contact (4) further comprises a left clamping plate (43), a right clamping plate (44) and a U-shaped limiting member (45), the left clamping plate (43) and the right clamping plate (44) are correspondingly fixed on the left side and the right side of the insulating hinge base (41) through screws, a left limiting hole (431) and a right limiting hole (441) are correspondingly formed in the left clamping plate (43) and the right clamping plate (44), and two side plates of the limiting member (45) are correspondingly fixed on the outer sides of the left clamping plate (43) and the right clamping plate (44) through screws; the upper half part of the insulating hinged seat (41) is provided with an arc-shaped groove (414) with a rear opening, the conducting plate (42) is provided with a fixing hole, a fixing shaft (423) in the arc-shaped groove (414) penetrates through the fixing hole, and the left end and the right end of the fixing shaft (423) are correspondingly clamped in a left limiting hole (431) and a right limiting hole (441).
5. The modular frame circuit breaker as claimed in claim 4, wherein the rear side of the lower half of the insulating hinge seat (41) is provided with a receiving groove (415), and the front side of the upper half of the insulating hinge seat (41) is provided with a hinge groove (416); the front end of the lower static contact (5) is arranged in the accommodating groove (415), the rear end of the transmission plate (7) is arranged in the hinge groove (416) and is hinged to a connecting shaft (46) penetrating through the insulating hinge seat (41), and a limiting head (461) clamped between the insulating hinge seat (41) and the right clamping plate (44) is fixed at the right end of the connecting shaft (46).
6. The modular frame circuit breaker according to any one of claims 1 to 5, wherein the lower stationary contact (5) comprises a first contact body (51) and a first fixing ring (52) which are connected into a whole, a first sealing groove (53) is formed in a rear side of the first fixing ring (52), the first fixing ring (52) is fixed on the insulating box (3) through screws, and a first sealing ring extruded on the insulating box (3) is formed in the first sealing groove (53).
7. The modular frame circuit breaker according to any one of claims 1 to 5, wherein the upper stationary contact (6) comprises a second contact body (61) and a second fixing ring (62) which are connected into a whole, a second sealing groove (63) is formed in a rear side of the second fixing ring (62), the second fixing ring (62) is fixed on the insulating box (3) through screws, and a second sealing ring extruded on the insulating box (3) is formed in the second sealing groove (63).
8. A modular frame circuit breaker as claimed in any one of claims 1 to 5, insulating pull rod (8) include pull rod body (81), bellows (82) and annular mounting (83), pull rod body (81) pass in bellows (82) and mounting (83), the both ends of pull rod body (81) correspond and are articulated with driving plate (7) and operating device (9), bellows (82) are from interior to exterior to pass the preceding lateral wall of insulating box (3), the rear end of bellows (82) is through shutoff dish (84) and pull rod body (81) seal weld, the front end and the mounting (83) seal weld of bellows (82), mounting (83) are fixed in the outside of insulating box (3) through the screw, the rear side of mounting (83) is equipped with third seal groove (831), be equipped with the third sealing washer of extrusion on insulating box (3) in third seal groove (831).
9. The modular frame circuit breaker as claimed in any one of claims 1-5, wherein the operating mechanism (9) comprises an upper driving shaft (91) and a lower driving shaft (92), an upper synchronizing crank arm (93) and a lower synchronizing crank arm (94) are correspondingly fixed on the upper driving shaft (91) and the lower driving shaft (92), a linkage plate (95) is hinged between the upper synchronizing crank arm (93) and the lower synchronizing crank arm (94), and two driving crank arms (96) are respectively fixed on the upper driving shaft (91) and the lower driving shaft (92); the single-phase modules (2) are provided with four groups, and the insulating pull rods (8) of the four groups of single-phase modules (2) are correspondingly hinged with four driving crank arms (96) of the operating mechanism (9).
10. The modular frame circuit breaker according to any one of claims 1-5, wherein a connecting base (54) is fixed at the front end of the lower stationary contact (5), the connecting base (54) is fixedly connected with the insulating box (3), and the rear side of the frame housing (1) is respectively provided with a reinforcing member (11) fixedly connected with the lower stationary contact (5) and the upper stationary contact (6); the insulating box (3) comprises a front cover (32) and a rear cover (33) which are buckled with each other, the front cover (32) and the rear cover (33) are fixedly connected through bolts, and a sealing gasket is arranged between the front cover (32) and the rear cover (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110073275.8A CN112750665A (en) | 2021-01-20 | 2021-01-20 | Modular frame circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110073275.8A CN112750665A (en) | 2021-01-20 | 2021-01-20 | Modular frame circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112750665A true CN112750665A (en) | 2021-05-04 |
Family
ID=75652591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110073275.8A Withdrawn CN112750665A (en) | 2021-01-20 | 2021-01-20 | Modular frame circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112750665A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472761A (en) * | 1982-06-18 | 1984-09-18 | Eaton Corporation | Segmented electrical panelboard for industrial frame and residential frame circuit breakers which accepts residential frame circuit breakers at any segment |
| CN103745896A (en) * | 2013-12-23 | 2014-04-23 | 上海良信电器股份有限公司 | Moving contact system of circuit breaker |
| CN107393779A (en) * | 2017-08-23 | 2017-11-24 | 河北宝凯电气股份有限公司 | A kind of AC/DC omnipotent breaker with stronger arc quenching effect |
| CN208985907U (en) * | 2018-10-08 | 2019-06-14 | 厦门明电电气科技有限公司 | A kind of self extinguishing type sulfur hexafluoride frame circuit breaker |
-
2021
- 2021-01-20 CN CN202110073275.8A patent/CN112750665A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472761A (en) * | 1982-06-18 | 1984-09-18 | Eaton Corporation | Segmented electrical panelboard for industrial frame and residential frame circuit breakers which accepts residential frame circuit breakers at any segment |
| CN103745896A (en) * | 2013-12-23 | 2014-04-23 | 上海良信电器股份有限公司 | Moving contact system of circuit breaker |
| CN107393779A (en) * | 2017-08-23 | 2017-11-24 | 河北宝凯电气股份有限公司 | A kind of AC/DC omnipotent breaker with stronger arc quenching effect |
| CN208985907U (en) * | 2018-10-08 | 2019-06-14 | 厦门明电电气科技有限公司 | A kind of self extinguishing type sulfur hexafluoride frame circuit breaker |
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Application publication date: 20210504 |