CN216288215U - Intelligent circuit breaker - Google Patents

Abstract

The utility model relates to an intelligent circuit breaker which is characterized by comprising at least one circuit breaker module and a reclosing module, wherein a cavity is formed in the circuit breaker module, a zero sequence mutual inductor and a current transformer are arranged in the cavity, the current transformer and the zero sequence mutual inductor are arranged in an embedded mode, the current transformer is arranged on the inner side of the zero sequence mutual inductor, the current transformer and the zero sequence mutual inductor are arranged in a concentric mode, and the cavity is located on the inner side of a wire outlet end of the circuit breaker module. The utility model realizes the current transformer and the zero sequence transformer in an embedded mode, fully utilizes the space between the current transformer and the zero sequence transformer, simultaneously reduces the volume of the whole breaker, realizes the miniaturization of the leakage breaker and can reduce the production cost of the leakage breaker.

Description

Intelligent circuit breaker

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to an intelligent circuit breaker.

Background

The circuit breaker with automatic reclosing function is used for indirect contact protection of people, can also be used for preventing fire hazard caused by ground fault current generated due to equipment insulation damage, can be used for distributing electric energy and protecting overload and short circuit of circuits and power supply equipment, and can also be used for infrequent switching of the circuits and infrequent starting of the motor.

The current transformer is an indispensable ring capable of converting large current into small current and outputting the small current to an intelligent detection system, and the current transformer is an important accessory in an air switch/circuit breaker today of intelligent power utilization; the function of the device is mainly to convert large current into standard small current in proportion, so as to realize standardization and miniaturization of measuring instruments, protective equipment and automatic control equipment.

The zero sequence transformer means that all lines of the power utilization circuit penetrate through the transformer, when the zero sequence transformer monitors current generated when power utilization equipment works, if the lines leak electricity, unbalanced current flows through the current circuit penetrating through the transformer and is detected by the zero sequence transformer, and the signal can be sent to an execution element to be tripped.

In the existing residual current circuit breaker, most of the current circuit breakers are provided with a current transformer and a zero sequence transformer in a separated mode, so that the size of the whole circuit breaker is increased. In addition, most of the existing circuit breakers connect the arc striking plate and the wiring terminal in a soft connection mode, but most of currents which can pass through the circuit breakers in the soft connection mode are 63A, and the current-carrying capacity is small.

Disclosure of Invention

The utility model aims to provide an intelligent circuit breaker to solve the problems.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides an intelligent circuit breaker, its characterized in that, includes at least one circuit breaker module and reclosing module, be formed with the cavity in the circuit breaker module, be provided with zero sequence transformer and current transformer in the cavity, embedded setting between current transformer and the zero sequence transformer, current transformer sets up zero sequence transformer's inboard, current transformer and zero sequence transformer set up with one heart, just the cavity is located the inboard of the leading-out terminal of circuit breaker module.

The utility model further provides a circuit breaker module, wherein wiring terminals are arranged on two sides of the circuit breaker module, a wiring board is arranged in the wiring terminal close to one side of the operating mechanism, a flow guide part is connected onto the wiring board, an arc striking plate is connected to the other end of the flow guide part, one end of the arc striking plate extends towards the lower part of an arc extinguishing system, the flow guide part comprises a first connecting part and a second connecting part, the first connecting part is connected with the wiring board, the second connecting part is connected with the upper part of the arc striking plate, and the second connecting part extends towards the bottom of the shell.

The utility model further provides that the breaker module is provided with a plug-in slot, the second connecting part of the corresponding flow guide piece extends towards one side of the plug-in slot to form a plug-in board, and the plug-in board is matched and installed with the plug-in slot.

The circuit breaker module is further provided with a fixing screw and a compression spring respectively arranged on two sides of the bottom of the second connecting part, the fixing screw is arranged in a fixing hole of the circuit breaker module, and the other ends of two ends of the compression spring are abutted against the inner wall of one shell of the circuit breaker module.

The utility model further comprises an operating mechanism arranged in the breaker module, wherein the operating mechanism comprises an installation support, a movable contact is hinged on the installation support, a fixed contact is arranged in the breaker module corresponding to the movable contact, an arc striking plate is also arranged in the breaker module, one end of the arc striking plate extends to one side of the movable contact, the other end of the arc striking plate extends to the lower part of the arc extinguish chamber, a first bending part and a second bending part are formed by extending the arc striking plate to the movable contact, the inclination of the second bending part is consistent with that of the movable contact in a disconnected state, and the movable contact extends to one side of the first bending part by 1.5mm to form an extending part.

The utility model further provides that the reclosing module comprises a reclosing shell, a tripping assembly is arranged on the reclosing shell, the tripping assembly is in linkage connection with a manual operation assembly, an electric operation assembly and an electromagnetic operation assembly, the tripping assembly comprises a tripping rod and a tripping shaft, the tripping rod and the tripping shaft synchronously rotate, the tripping rod comprises a first contact part, a second contact part and a third contact part, the first contact part is in linkage with the manual operation assembly, the second contact part is in linkage with the electric operation assembly, the third contact part is in linkage with the electromagnetic operation assembly, the first contact part and the second contact part are positioned on the same extension block, the first contact part and the second contact part are respectively positioned at two ends of the extension block, and the first contact part is higher than the second contact part, the third contact part is located the top of extending the piece and the cover is located the trip shaft, the third contact part still is connected with the guiding axle, corresponding form on the reclosing lock casing with supply guiding axle pivoted guiding hole, the guiding axle removes along the guiding hole.

The utility model further provides that the electric operating assembly is positioned on one side of the tripping assembly, the electric tripping assembly comprises a driving motor, a worm wheel and a tail end transmission gear, the output end of the driving motor is connected with the worm, the worm is meshed with the worm wheel, a plurality of intermediate gears are arranged between the worm wheel and the tail end transmission gear, and a shifting block matched with the second contact part is formed at the bottom of the tail end transmission gear.

The manual operation assembly is positioned on the other side of the tripping assembly and is rotatably installed on the reclosing shell, and a deflector rod linked with the first contact part is formed on the manual operation assembly.

The utility model is further provided that the electromagnetic operation assembly is positioned at one side of the third contact part, and the ejector rod of the electromagnetic operation assembly is linked with the third contact part.

The utility model comprises at least one of the following beneficial effects:

the utility model realizes the current transformer and the zero sequence transformer in an embedded mode, fully utilizes the space between the current transformer and the zero sequence transformer, simultaneously reduces the volume of the whole breaker, realizes the miniaturization of the leakage breaker and can reduce the production cost of the leakage breaker;

2-the utility model realizes the connection of the arc striking plate and the wiring board by arranging a flow guide piece, increases the conduction area and improves the current-carrying capacity, thereby realizing the conduction current from 63A to 125A.

3-the utility model forms a first bending part on the arc striking plate, and extends and lengthens 1.5mm towards the moving contact towards the first bending part on the original basis, thereby increasing the opening distance and ensuring the safety performance.

4-the utility model adds other two tripping modes on the basis of keeping the original tripping mode of the electric operating assembly, wherein the first mode is manual tripping through a manual operating assembly; the second is tripping through an electromagnetic operation assembly; the tripping mode is increased;

and 5, improving the tripping assembly according to the tripping mode, and respectively arranging a corresponding first contact part, a second contact part and a third contact part to realize linkage with respective operating assemblies.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective view of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a circuit breaker module according to an embodiment of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

fig. 4 is a schematic view of a middle deflector installation of a circuit breaker module according to an embodiment of the present invention;

fig. 5 is a front view of a reclosing module in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of an electrically operated assembly according to an embodiment of the present invention;

FIG. 7 is a schematic view of a manually operated assembly of an embodiment of the present invention as it is tripped;

fig. 8 is a perspective view of a reclosing module according to an embodiment of the utility model from a side view;

reference numerals: x, a breaker module; y, a reclosing module; y1, reclosing shell; 10. a cavity; 20. a zero sequence transformer; 30. a current transformer; 40. a wiring terminal; 50. a flow guide member; 501. a first connection portion; 502. a second connecting portion; 60. an arc striking plate; 70. a wiring board; 80. inserting grooves; 90. a plugboard; 100. fixing screws; 110. a compression spring; 120. a fixing hole; 130. an operating mechanism; 140. mounting a bracket; 150. a moving contact; 160. static contact; 170. a first bending portion; 180. a second bending portion; 190. a trip assembly; 1901. tripping the rod piece; 1901a, a first contact; 1901b, a second contact; 1901c, a third contact; 1902. tripping the shaft; 200. a manually operated component; 210. an electrically operated component; 220. an electromagnetically operated component; 230. an extension block; 240. a guide shaft; 250. a guide hole; 260. a drive motor; 270. a worm; 280. a worm gear; 290. a final drive gear; 300. an intermediate gear; 310. a deflector rod; 320. mounting holes; 330. mounting a column; 340. a top rod; 350. shifting blocks;

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

As shown in fig. 1-8, an intelligent circuit breaker includes at least one circuit breaker module X and reclosing module Y, a cavity 10 is formed in the circuit breaker module X, zero sequence transformer 20 and current transformer 30 are provided in the cavity 10, embedded setting is performed between current transformer 30 and zero sequence transformer 20, current transformer 30 sets up the inboard of zero sequence transformer 20, current transformer 30 and zero sequence transformer 20 set up concentrically, just cavity 10 is located the inboard of the leading-out terminal of circuit breaker module X.

In addition, the utility model also provides the following technical contents:

circuit breaker module X's both sides are provided with binding post 40, are close to operating device 130 one side be provided with wiring board 70 in the binding post 40, be connected with water conservancy diversion piece 50 on the wiring board 70, the other one end of water conservancy diversion piece 50 is connected with run-on plate 60, the one end of run-on plate 60 sets up the extension to arc extinguishing system below, water conservancy diversion piece 50 includes first connecting portion 501 and second connecting portion 502, first connecting portion 501 with wiring board 70 is connected, second connecting portion 502 with the upper portion of run-on plate 60 is connected, wherein second connecting portion 502 extends to the casing bottom.

The breaker module X is provided with an insertion groove 80, the corresponding second connecting portion 502 of the current guiding element 50 extends to one side of the insertion groove 80 to form an insertion plate 90, and the insertion plate 90 is installed in a manner of being matched with the insertion groove 80.

Two sides of the bottom of the second connecting portion 502 are respectively provided with a fixing screw 100 and a compression spring 110, the fixing screw 100 is arranged in the fixing hole 120 of the circuit breaker module X, and the other ends of the two ends of the compression spring 110 are abutted against the inner wall of one of the shells of the circuit breaker module X.

The utility model further comprises an operating mechanism 130 arranged in the circuit breaker module X, wherein the operating mechanism 130 comprises an installation support 140, a movable contact 150 is hinged on the installation support 140, a fixed contact 160 is arranged in the circuit breaker module X corresponding to the movable contact 150, an arc striking plate 60 is further arranged in the circuit breaker module X, one end of the arc striking plate 60 extends towards one side of the movable contact 150, the other end of the arc striking plate extends to the lower part of the arc extinguishing chamber, a first bending part 170 and a second bending part 180 are formed by extending the arc striking plate 60 towards the movable contact 150, the inclination of the second bending part 180 is consistent with that of the movable contact 150 in a disconnection state, and the movable contact 150 extends towards one side of the first bending part 170 by 1.5mm to form an extension part.

The reclosing module Y includes a reclosing housing Y1, a tripping assembly 190 is disposed on the reclosing housing Y1, the tripping assembly 190 is linked to a manual operating assembly 200, an electric operating assembly 210 and an electromagnetic operating assembly 220, the tripping assembly 190 includes a tripping lever 1901 and a tripping shaft 1902, the tripping lever 1901 rotates synchronously with the tripping shaft 1902, the tripping lever 1901 includes a first contact 1901a, a second contact 1901b and a third contact 1901c, the first contact 1901a is linked to the manual operating assembly 200, the second contact 1901b is linked to the electric operating assembly 210, the third contact 1901c is linked to the electromagnetic operating assembly 220, the first contact 1901a and the second contact 1901b are disposed on the same extension block 230, wherein the first contact 1901a and the second contact 1901b are disposed at two ends of the extension block 230 respectively, the first contact portion 1901a is higher than the second contact portion 1901b, the third contact portion 1901c is located above the extension block 230 and is sleeved on the trip shaft 1902, the third contact portion 1901c is further connected to a guide shaft 240, a guide hole 250 for the guide shaft 240 to rotate is formed in the corresponding reclosing housing Y1, and the guide shaft 240 moves along the guide hole 250.

The electric operating assembly 210 is located at one side of the trip assembly 190, the electric trip assembly 190 includes a driving motor 260, a worm 270, a worm gear 280 and a final gear 290, an output end of the driving motor 260 is connected with the worm 270, the worm 270 is engaged with the worm gear 280, a plurality of intermediate gears 300 are arranged between the worm gear 280 and the final gear 290, and a shifting block 350 adapted to the second contact portion 1901b is formed at the bottom of the final gear 290.

In the above technical solution, the principle of tripping the electric operating assembly 210 is as follows: when the circuit board detects a signal, the driving motor 260 rotates, the end transmission gear 290 rotates through the meshing transmission of the worm gear 280 and the worm 270 and the intermediate gear 300, and in the rotating process, the shifting block 350 pushes the second contact portion 1901b to rotate, and at the moment, the tripping shaft 1902 rotates synchronously with the tripping shaft to realize tripping; when the motor rotates reversely, the shifting block 350 pushes the second contact portion 1901b reversely, so that the tripping state can be released;

the manual operating assembly 200 is located on the other side of the trip assembly 190 and is rotatably mounted on the reclosing housing Y1, a shift lever 310 with a first contact portion 1901aa linked is formed on the manual operating assembly 200, specifically, a mounting hole 320 is formed on the manual operating assembly 200, a mounting post 330 is formed on the housing, the manual operating assembly 200 is mounted on the housing through the mounting post 330 and the mounting hole 320 and can rotate around the mounting post 330, in addition, the upper end surface of the manual operating assembly 200 is slightly higher than the height of the plane a of the housing, so that the manual operating assembly 200 can be shifted manually; the manual operation assembly 200 is stirred to act on the first contact portion 1901a, so that the first contact portion is tripped; in the manual operation assembly 200, the trip lever is reset in the breaker body, and the trip lever is connected with a spring in the breaker body and is reset under the action of the spring;

the electromagnetic operation element 220 is located at one side of the third contact portion 1901c, and the top bar 340 of the electromagnetic operation element 220 is linked with the third contact portion 1901 c. Specifically, the electromagnetic operating assembly 220 detects a leakage signal through the zero sequence transformer 20 in the circuit breaker module X, and then the top rod 340 in the electromagnetic operating assembly 220 moves to push the third contact portion 1901c to move, so as to realize rotation of the trip lever and the trip shaft 1902; specifically shown in the figure;

according to the technical scheme, the utility model can obtain the following effects:

1-the utility model realizes the current transformer 30 and the zero sequence transformer 20 in an embedded mode, makes full use of the space between each other, reduces the volume of the whole breaker, realizes the miniaturization of the leakage breaker and can reduce the production cost;

2-the utility model realizes the connection of the arc striking plate 60 and the wiring board 70 by arranging the flow guide piece 50, increases the conduction area and improves the current-carrying capacity, thereby realizing the conduction current lifting from 63A to 125A.

3-the utility model forms a first bending part 170 on the arc striking plate 60, and extends and lengthens 1.5mm towards the moving contact 150 towards the first bending part 170 on the original basis, thereby increasing the opening distance and ensuring the safety performance.

4-the utility model adds other two tripping modes on the basis of keeping the original tripping mode of the electric operating assembly 210, wherein the first mode is manual tripping through the manual operating assembly 200; the second is tripping through the electromagnetic operation component 220; the tripping mode is increased;

5-improving the tripping assembly 190 according to the tripping mode, and arranging a first contact 1901a, a second contact 1901b and a third contact 1901c to realize linkage with the respective operating assemblies.

Certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

While the foregoing description shows and describes several preferred embodiments of the utility model, it is to be understood, as noted above, that the utility model is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (9)

1. The utility model provides an intelligent circuit breaker, its characterized in that, includes at least one circuit breaker module and reclosing module, be formed with the cavity in the circuit breaker module, be provided with zero sequence transformer and current transformer in the cavity, embedded setting between current transformer and the zero sequence transformer, current transformer sets up zero sequence transformer's inboard, current transformer and zero sequence transformer set up with one heart, just the cavity is located the inboard of the leading-out terminal of circuit breaker module.

2. The intelligent circuit breaker according to claim 1, wherein the circuit breaker module is provided with connecting terminals at two sides thereof, a connecting board is arranged in the connecting terminal near one side of the operating mechanism, a flow guide member is connected to the connecting board, an arc striking plate is connected to the other end of the flow guide member, one end of the arc striking plate extends below the arc extinguishing system, the flow guide member comprises a first connecting portion and a second connecting portion, the first connecting portion is connected to the connecting board, the second connecting portion is connected to the upper portion of the arc striking plate, and the second connecting portion extends toward the bottom of the housing.

3. The intelligent circuit breaker according to claim 2, wherein the circuit breaker module is provided with a plug slot, the second connecting portion of the corresponding diversion member extends to one side of the plug slot to form a plug board, and the plug board is installed in a manner of being matched with the plug slot.

4. The intelligent circuit breaker according to claim 3, wherein two sides of the bottom of the second connecting portion are respectively provided with a fixing screw and a pressing spring, the fixing screw is disposed in a fixing hole of the circuit breaker module, and the other ends of the two ends of the pressing spring are abutted against one of the shells of the circuit breaker module.

5. The intelligent circuit breaker according to claim 4, further comprising an operating mechanism disposed in the circuit breaker module, wherein the operating mechanism includes a mounting bracket, a movable contact is hinged to the mounting bracket, a fixed contact is disposed in the circuit breaker module corresponding to the movable contact, an arc striking plate is further disposed in the circuit breaker module, one end of the arc striking plate extends to one side of the movable contact, the other end of the arc striking plate extends to a lower side of the arc extinguishing chamber, the arc striking plate extends to the movable contact to form a first bending portion and a second bending portion, an inclination of the second bending portion is consistent with an inclination of the movable contact in an off state, and the movable contact extends to one side of the first bending portion by 1.5mm to form an extension portion.

6. The intelligent circuit breaker according to claim 5, wherein the reclosing module comprises a reclosing housing, a tripping assembly is arranged on the reclosing housing, the tripping assembly is linked with a manual operation assembly, an electric operation assembly and an electromagnetic operation assembly, the tripping assembly comprises a tripping rod and a tripping shaft, the tripping rod and the tripping shaft rotate synchronously, the tripping rod comprises a first contact part, a second contact part and a third contact part, the first contact part is linked with the manual operation assembly, the second contact part is linked with the electric operation assembly, the third contact part is linked with the electromagnetic operation assembly, the first contact part and the second contact part are arranged on the same extension block, wherein the first contact part and the second contact part are respectively arranged at two ends of the extension block, the height of the first contact part is higher than that of the second contact part, the third contact part is located above the extension block and sleeved on the tripping shaft, the third contact part is further connected with a guide shaft, a guide hole for rotating the guide shaft is formed in the reclosing lock shell correspondingly, and the guide shaft moves along the guide hole.

7. The intelligent circuit breaker according to claim 6, wherein the electric operation assembly is located at one side of the trip assembly, the electric operation assembly comprises a driving motor, a worm wheel and a tail end transmission gear, an output end of the driving motor is connected with the worm, the worm is meshed with the worm wheel, a plurality of intermediate gears are arranged between the worm wheel and the tail end transmission gear, and a shifting block matched with the second contact portion is formed at the bottom of the tail end transmission gear.

8. The intelligent circuit breaker according to claim 7, wherein the manual operating assembly is located on the other side of the trip assembly and rotatably mounted on the reclosure housing, and a shift lever linked with the first contact portion is formed on the manual operating assembly.

9. The intelligent circuit breaker according to claim 8, wherein the electromagnetic operating assembly is located at one side of the third contact portion, and the top bar of the electromagnetic operating assembly is linked with the third contact portion.

Images