Reclosing circuit breaker

Abstract

The utility model discloses a reclosing circuit breaker. The reclosing circuit breaker comprises a reclosing module and a circuit breaker module, the reclosing module comprises a module shell, and a control assembly, an electric operation mechanism, a release and a release piece are arranged in the module shell; the circuit breaker module comprises a circuit breaker shell, and an operating mechanism is arranged in the circuit breaker shell; the electric operation mechanism is controlled by the control assembly, is connected with the operation mechanism and is used for driving the operation mechanism to execute closing operation; the tripping piece is rotationally arranged and is linked with a lock catch in the operating mechanism, and after the tripping piece is acted by the electric operating mechanism, the operating mechanism is promoted to execute opening operation; wherein the tripping piece partially extends to the side of an ejector rod of the tripper, and the tripper pushes the tripping piece to rotate after receiving a tripping signal from the control assembly, so that the operating mechanism executes opening operation; the device has the advantage of being more reasonable in structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of low-voltage electrical apparatus, in particular to a reclosing circuit breaker. BACKGROUND

[0002] The intelligent small circuit breaker is also called a reclosing circuit breaker, which has the functions of electrically opening and closing. With the increasing demand of users, such reclosing circuit breakers have also been provided with leakage protection functions.

[0003] The existing reclosing circuit breaker with leakage protection function, such as the automatic reclosing device of the leakage protection circuit breaker disclosed in CN215418067U, has an electromagnetic trip and an electrically operated assembly. The electrically operated assembly can realize the rotation of the handle gear to achieve electrically opening and closing. When leakage occurs, the top rod of the electromagnetic trip pushes the sliding plate, and the sliding plate pushes the trip lever to rotate. Since the trip lever is linked with the lock catch on the side of the circuit breaker, the operating mechanism can be tripped to realize leakage tripping protection.

[0004] However, the electromagnetic trip with the above structure is not reasonable, and the top rod of the electromagnetic trip needs a push plate as a transmission member to push the trip lever to rotate.

[0005] Moreover, considering the reset problem of the push plate, an additional spring is needed as a reset member of the push plate. For such an electromagnetic trip, it is often powered by a circuit board, and the working voltage is relatively low, so the pushing force is limited. Pushing a push plate to move is already a burden for the electromagnetic trip; not to mention overcoming the spring force to do work, which is undoubtedly a test for the electromagnetic trip.

[0006] Obviously, the simplest solution is to increase the specifications of the electromagnetic trip, such as increasing its working voltage and increasing its coil winding, but such a solution will undoubtedly increase more costs and make the space inside the reclosing module more crowded, which is not conducive to the subsequent improvement of the product.

[0007] Therefore, how to make the electromagnetic trip more reasonable is a problem worth considering. SUMMARY

[0008] Therefore, the present application aims to overcome the deficiencies in the prior art and provides a reclosing circuit breaker.

[0009] The application provides a reclosing circuit breaker, which comprises a reclosing module and a circuit breaker module; the reclosing module comprises a module shell, a control assembly, an electric operating mechanism, a tripping device and a tripping member arranged in the module shell; the circuit breaker module comprises a circuit breaker shell, and an operating mechanism arranged in the circuit breaker shell; the electric operating mechanism is controlled by the control assembly and connected with the operating mechanism to drive the operating mechanism to perform a closing operation; the tripping member is rotatably arranged and connected with a lock catch in the operating mechanism, and the tripping member is driven by the electric operating mechanism to make the operating mechanism perform an opening operation; wherein the tripping member extends to the side of a top rod of the tripping device, and the tripping device pushes the tripping member to rotate to make the operating mechanism perform an opening operation after receiving a tripping signal from the control assembly.

[0010] In some embodiments of the application, the electric operating mechanism comprises a motor, a transmission gear set, a closing gear and a handle gear; the transmission gear set comprises an input wheel and an output wheel, and the output part of the motor is engaged with the input wheel; the handle gear is connected with a handle of the operating mechanism and engaged with the closing gear; the output wheel is provided with an opening protrusion and a closing protrusion, and the closing gear is provided with a stroke channel, and the closing protrusion is arranged in the stroke channel; during the rotation of the output wheel in a first direction, the closing protrusion acts on the channel wall of the stroke channel to make the output wheel connected with the closing gear, so as to make the operating mechanism perform a closing operation; when the output wheel rotates in a second direction, the closing protrusion rotates in the stroke channel, the output wheel is not connected with the closing gear, and the opening protrusion acts on the tripping member to make the operating mechanism perform an opening operation.

[0011] In some embodiments of the application, the tripping member has a reset position and a tripping position; the tripping member moves to the tripping position when the tripping member is acted on by the opening protrusion or the top rod of the tripping device; further comprising a reset spring connected with the tripping member to provide a biasing force for the tripping member to move to the reset position, and the tripping member returns to the reset position when the operating mechanism performs a closing operation; the electric operating mechanism comprises a locking state, and when the electric operating mechanism is in the locking state, the opening protrusion is kept in the position of acting on the tripping member to make the tripping member in the tripping position, so that the operating mechanism cannot perform a closing operation.

[0012] In some embodiments of the application, the control assembly is provided with a first position switch and a second position switch, the first position switch is triggered when the handle gear is in a closing position, the second position switch is triggered when the handle gear is in an opening position, and the first position switch and the second position switch feed a signal to the control assembly when triggered.

[0013] In some embodiments of the application, the electric operating mechanism further comprises at least one of the following structures,

[0014] Structure one, the output wheel has a free position, after the output wheel rotates in the first direction to make the operating mechanism perform the closing operation, the control assembly controls the output wheel to rotate in the second direction to the free position, in the process of rotating to the free position, the closing protrusion idles in the stroke channel, and the output wheel is not linked with the closing gear.

[0015] Structure two, the output wheel has a free position, after the output wheel rotates in the second direction to make the operating mechanism perform the opening operation and the electric operating mechanism is not in the locked state, the control assembly controls the output wheel to rotate in the first direction to the free position, in the process of rotating to the free position, the closing protrusion idles in the stroke channel, and the output wheel is not linked with the closing gear.

[0016] In some embodiments of the present application, the control assembly further comprises at least one of the following structures,

[0017] Structure one, the third position switch, the output wheel is provided with a trigger protrusion, when the output wheel is in the free position, the trigger protrusion triggers the third position switch, and the third position switch feeds back a signal to the control assembly when triggered.

[0018] Structure two, the fourth position switch, the output wheel is provided with a trigger protrusion, when the opening protrusion acts on the tripping part, the trigger protrusion triggers the fourth position switch, and the fourth position switch feeds back a signal to the control assembly when triggered.

[0019] In some embodiments of the present application, at least one of the following structures is further included,

[0020] Structure one, the closing gear comprises a first sector tooth part, and the handle gear comprises a second sector tooth part, and the second sector tooth part is engaged with the first sector tooth part.

[0021] Structure two, further comprising an intermediate gear, the input gear and the intermediate gear are both double gears, the large tooth part of the input gear is engaged with the output part of the motor, the small tooth part of the input gear is engaged with the large tooth part of the intermediate gear, and the small tooth part of the intermediate gear is engaged with the output wheel.

[0022] Structure three, the rotation center of the output wheel and the rotation center of the closing gear are coaxially arranged.

[0023] In some embodiments of the present application, at least one of the following structures is further included,

[0024] Structure one, the surface of the opening protrusion for acting on the tripping part is an arc surface or an inclined surface, and the surface of the tripping part for contacting the opening protrusion is an arc surface or an inclined surface.

[0025] Structure two, the trip unit has a rotating part, a first acting part and a second acting part, the rotating part is rotationally connected with the module housing, the first acting part is connected to the rotating part, and the second acting part is connected to the rotating part or the first acting part, the first acting part is used for cooperating with the opening protrusion, and the second acting part is used for cooperating with the top rod of the trip unit.

[0026] Structure three, a limiting protrusion is arranged in the module housing, the limiting protrusion is arranged on one side of the trip unit, and the limiting protrusion is arranged on one side of the trip unit.

[0027] Structure four, the straight-line distance from the opening protrusion to the rotation center of the output wheel is greater than the straight-line distance from the closing protrusion to the rotation center of the output wheel.

[0028] In some embodiments of the present application, at least one of the following structures is further included,

[0029] Structure one, a first buckle is arranged on the module housing, and the first buckle is used for buckling the motor on the module housing.

[0030] Structure two, a second buckle is arranged on the module housing, and the second buckle is used for buckling the trip unit on the module housing.

[0031] Structure three, the length direction of the motor is parallel to the length direction of the module housing.

[0032] Structure four, the length direction of the trip unit is perpendicular to the length direction of the module housing.

[0033] In some embodiments of the present application, the control assembly further includes at least one of the following circuits,

[0034] Circuit one, a test circuit, a button of the test circuit is arranged on the reclosing module, the button is pressed to make the test circuit work, and the control assembly sends a trip signal to the trip unit.

[0035] Circuit two, a closing and opening circuit, a closing and opening button of the closing and opening circuit is arranged on the reclosing module, the closing and opening button is pressed to make the closing and opening circuit work, and the control assembly controls the electric operating mechanism to perform the opening operation or the closing operation.

[0036] Circuit three, a switching circuit, a switching switch of the switching circuit is exposed on the reclosing module, and the switching switch includes a manual position and an automatic position; when the switching switch is in the manual position, the control assembly is turned off; and when the switching switch is in the automatic position, the control assembly is turned on.

[0037] Circuit four, an indication circuit, the indication circuit includes an indication lamp, and the indication lamp is used for indicating the working state of the circuit breaker.

[0038] Circuit five, a communication circuit, a communication interface of the communication circuit is exposed on the reclosing module.

[0039] Circuit six, metering circuit, the circuit breaker module is provided with a sampling element of the metering circuit, and the sampling element corresponds to the main line conductor of the circuit breaker module.

[0040] Circuit seven, over-temperature protection circuit, the circuit breaker module is provided with a temperature sampling element of the over-temperature protection circuit, and the temperature sampling element is used for sampling the temperature of the main line conductor of the circuit breaker module; when the collected temperature reaches a protection threshold, the control component sends a tripping signal to the tripper.

[0041] Circuit eight, leakage protection circuit, the circuit breaker module is provided with a zero sequence transformer of the leakage protection circuit, and the main line conductor of the circuit breaker module passes through the zero sequence transformer; when there is leakage, the control component sends a tripping signal to the tripper.

[0042] The application has the following beneficial effects compared with the prior art:

[0043] With this structure, since a part of the tripping piece extends to the side of the ejector rod of the tripper, when leakage occurs, the ejector rod of the tripper can directly push the tripping piece to rotate, so that the operating mechanism performs the opening operation. Compared with the prior art, the intermediate push rod structure is saved, and the push rod related reset spring does not need to be arranged, the transmission force is more direct, and the loss of the transmission force is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0045] Figure 1 A schematic diagram of the reclosing circuit breaker of the embodiment of the present application is shown;

[0046] Figure 2 A schematic diagram of the reclosing circuit breaker of the embodiment of the present application is shown;

[0047] Figure 3 An exploded view of the reclosing module in the embodiment of the present application is shown;

[0048] Figure 4 An internal schematic diagram of the reclosing module in the embodiment of the present application is shown;

[0049] Figure 5 A schematic diagram of the tripping piece and the lock catch in the embodiment of the present application is shown;

[0050] Figure 6 A schematic diagram of the closing gear and the handle gear in the embodiment of the present application is shown;

[0051] Figure 7 A schematic diagram of an output wheel in an embodiment of the application is shown;

[0052] Figure 8 A diagram showing the position relationship of each gear when the motor is closing in an embodiment of the application is shown;

[0053] Figure 9 A diagram showing the position relationship of each gear after the motor is closed (the output wheel returns to the free position) in an embodiment of the application is shown;

[0054] Figure 10 A diagram showing the position relationship of each gear when the motor is opening in an embodiment of the application is shown;

[0055] Figure 11 A diagram showing the position relationship of each gear after the motor is opened (the output wheel returns to the free position) in an embodiment of the application is shown;

[0056] Figure 12 A diagram showing the position relationship of each gear after the tripping device is actuated in an embodiment of the application is shown;

[0057] Figure 13 A diagram showing the tripping device in an embodiment of the application is shown;

[0058] Figure 14 A diagram showing the output wheel and the third and fourth position switches in an embodiment of the application is shown;

[0059] Figure 15 A diagram showing a partial enlarged view of each position switch in an embodiment of the application is shown. DETAILED DESCRIPTION

[0060] Embodiments of the present application are described in detail below with reference to the attached drawings, wherein the same or similar elements or elements having the same or similar functions are denoted by the same reference numerals throughout the drawings. The embodiments described below with reference to the drawings are exemplary only, and are intended to explain the present application, and should not be understood as limiting the present application.

[0061] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the present application.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. Example

[0065] like Figures 1-15 As shown, an embodiment of this application is a reclosing circuit breaker, which is an intelligent circuit breaker that includes a reclosing module R and a circuit breaker module C.

[0066] Circuit breaker module C includes a circuit breaker housing, and an operating mechanism, an arc-extinguishing chamber, a main line conductor (including moving and stationary contacts), an overload trip unit, and an instantaneous trip unit 203, all housed within the circuit breaker housing. In this embodiment, circuit breaker module C has four poles, but it is not limited to a four-pole structure; it is also applicable to two-pole and three-pole structures.

[0067] The operating mechanism includes a handle 101, a connecting rod, a trip lever, a lock catch 102, a contact support and the like. When the circuit breaker module C is in the closed state, the lock catch 102 and the trip lever are engaged and in a stable state, so as to ensure that the operating mechanism remains in the closed state. When the lock catch 102 is driven to rotate, the stable state is broken, and the operating mechanism performs the opening operation. The lock catch 102 is driven by many factors, such as an overload release, a instantaneous release, a release 203 in the reclosing module R, and the like. For this operating mechanism, it is a conventional means in the art, which will not be described here. Of course, in addition to the operating mechanism with a trip lever, the operating mechanism of a common small circuit breaker without a trip lever is also used to lock the lock catch 102 by using a connecting rod and a lock catch 102. If the lock catch 102 rotates, the operating mechanism also performs the opening operation.

[0068] The reclosing module R is arranged on one side of the circuit breaker module C.

[0069] The reclosing module R includes a module housing 201, a control assembly 202, an electric operating mechanism, a release 203 and a release member 204.

[0070] The control assembly 202 here is actually a circuit board assembly, which contains many circuits (which will be described in detail below).

[0071] The control assembly 202, the electric operating mechanism, the release 203 and the release member 204 are located in the interior of the module housing 201.

[0072] The electric operating mechanism here can realize the opening and closing operations of the operating mechanism. Specifically, the electric operating mechanism is connected with the operating mechanism to drive the operating mechanism to perform the closing operation. The release member 204 is arranged in the module housing 201 and is linked with the lock catch 102 in the operating mechanism. After the electric operating mechanism drives the release member 204, the operating mechanism performs the opening operation.

[0073] Part of the release member 204 extends to the side of the top rod 203a of the release 203. Thus, after the release 203 receives a release signal (such as a release signal due to a leakage) from the control assembly 202, the top rod 203a of the release 203 pushes the release member 204 to rotate, so that the operating mechanism performs the opening operation.

[0074] With this structure, part of the release member 204 extends to the side of the top rod 203a of the release 203. When the leakage occurs, the top rod 203a of the release 203 can directly push the release member 204 to rotate, so that the operating mechanism performs the opening operation. Compared with the prior art, the intermediate push rod structure is saved, and the push rod return spring does not need to be arranged, the transmission force is more direct, and the loss of the transmission force is reduced.

[0075] For the electric operating mechanism, the electric operating mechanism comprises a motor 205, a transmission gear set, a closing gear 206 and a handle gear 207.

[0076] The output part of the motor 205 is a worm. Of course, it can also be a helical gear.

[0077] The transmission gear set comprises at least an input wheel 208 and an output wheel 209. The input wheel 208 is engaged with the output part of the motor 205, and the rotation of the motor 205 is transmitted to the output wheel 209 after being decelerated by the transmission gear set. Here, the transmission gear set further comprises an intermediate gear 210, and the transmission between the input wheel 208 and the output wheel 209 is realized through the intermediate gear 210. It is worth mentioning that the input wheel 208 and the intermediate gear 210 are both double gears. The large tooth part of the input wheel 208 is engaged with the output part of the motor 205, the small tooth part of the input wheel 208 is engaged with the large tooth part of the intermediate gear 210, and the small tooth part of the intermediate gear 210 is engaged with the output wheel 209.

[0078] The closing gear 206 and the handle gear 207 are always engaged. Here, the closing gear 206 and the handle gear 207 are both non-full tooth structures, and are both sector gears. That is, the closing gear 206 comprises a first sector tooth part, and the handle gear 207 comprises a second sector tooth part which is engaged with the first sector tooth part. The rotation of the closing gear 206 can cause the rotation of the handle gear 207 (for example, electric closing operation), and the rotation of the handle gear 207 can also cause the rotation of the closing gear 206 (for example, opening operation).

[0079] The relationship between the output wheel 209 and the closing gear 206 is not always in transmission, but forms transmission in one direction.

[0080] Specifically, the output wheel 209 is provided with a closing protrusion 2091, and the closing gear 206 is provided with a stroke channel 2061, and the closing protrusion 2091 extends into the stroke channel 2061. When the motor 205 drives the output wheel 209 to rotate in the first direction F1 during the electric closing operation, the closing protrusion 2091 acts on the channel wall of the stroke channel 2061, so that the output wheel 209 and the closing gear 206 form linkage, and the operating mechanism is prompted to perform closing operation.

[0081] It is worth mentioning that the output wheel 209 and the closing gear 206 are coaxially arranged, and specifically, the rotation center of the output wheel 209 and the rotation center of the closing gear 206 are coaxial, so that the coaxial structure is conducive to the arrangement of the two gears.

[0082] Here, for the tripping protrusion 2092, it is farther away from the rotation center of the output wheel 209 than the closing protrusion 2091, that is, the straight-line distance from the tripping protrusion 2092 to the rotation center of the output wheel 209 is greater than the straight-line distance from the closing protrusion 2091 to the rotation center of the output wheel 209. The reason for adopting such a distance arrangement is that the trip unit 204 can be arranged as far out as possible, which is beneficial to the arrangement of the closing gear 206, the trip unit 204 and other parts.

[0083] When the electric closing operation is performed, the motor 205 drives the output wheel 209 to rotate in the second direction F2, the closing protrusion 2091 idles in the stroke channel 2061 (the closing protrusion 2091 does not contact the channel wall forming the channel), and the output wheel 209 is not linked with the closing gear 206. With the rotation of the output wheel 209, the tripping protrusion 2092 on the output wheel 209 acts on the trip unit 204, prompting the operating mechanism to perform the tripping operation.

[0084] Such a structure is very simple in transmission structure whether it is the electric closing operation or the electric tripping operation.

[0085] For the electric closing operation or for the electric tripping operation, the output wheel 209 has a free position F3.

[0086] For the electric closing operation, after the output wheel 209 rotates in the first direction F1 to make the operating mechanism perform the closing operation, the control assembly 202 controls the output wheel 209 to rotate in the second direction F2 to the free position F3 by a predetermined distance. In this process of rotating in the second direction F2, the closing protrusion 2091 idles in the stroke channel 2061, and the output wheel 209 is not linked with the closing gear 206.

[0087] For the electric tripping operation, after the output wheel 209 rotates in the second direction F2 to make the operating mechanism perform the tripping operation (when the electric operating mechanism is not in the locked state), the control assembly 202 controls the output wheel 209 to rotate in the first direction F1 to the free position F3 by a predetermined distance. In the process of rotating to the free position F3, the closing protrusion 2091 idles in the stroke channel 2061, and the output wheel 209 is not linked with the closing gear 206.

[0088] The arrangement of such a free position F3 is beneficial to the electric tank mechanism to complete the next opposite operation more quickly (if the last operation is closing, the next tripping operation will be faster after reverse rotation; if the last operation is tripping, the next closing operation will be faster after reverse rotation.)

[0089] In order to facilitate the judgment of the free position F3, a third position switch 303 is arranged on the control assembly 202. The output wheel 209 has a triggering protrusion 2093, when the output wheel 209 is in the free position F3, the triggering protrusion 2093 triggers the third position switch 303, and the third position switch 303 feeds back a signal to the control assembly 202 when triggered. Here, the third position switch 303 is a travel switch, of course, as an alternative, a micro switch, a Hall assembly, a light-sensitive switch, and other forms of position switch can also be used.

[0090] No matter what form of position switch is used, in combination with the triggering protrusion 2093, the control assembly 202 can accurately know the position of the output wheel 209, which is beneficial to the design of the control logic of the electric operating mechanism (for example, stopping the motor 205 in time).

[0091] Here, the control assembly 202 is provided with a first position switch 301 and a second position switch 302. The first position switch 301 is triggered by the handle gear 207 when the handle gear 207 is in the closed position, and the second position switch 302 is triggered by the handle gear 207 when the handle gear 207 is in the open position. The first position switch 301 and the second position switch 302 feed back a signal to the control assembly 202 when triggered. Here, the first position switch 301 and the second position switch 302 are also travel switches, of course, as an alternative, a micro switch, a Hall assembly, a light-sensitive switch, and other forms of position switch can also be used.

[0092] The first position switch 301 and the second position switch 302 in combination with the structure of the handle gear 207 can make the control assembly 202 accurately know whether the circuit breaker is closed or open, which is beneficial to the design of the control logic of the electric operating mechanism (for example, reverse rotation of the motor to make the output wheel 209 reach the free position F3; or directly stop the motor 205 from working).

[0093] As for the tripping piece 204, its reset is achieved by the reset spring and the reset of the operating mechanism lock 102. Here, the reset spring abuts between the tripping piece 204 and the module housing 201. The tripping piece 204 has a reset position and a tripping position. When the operating mechanism is in the closed state, the tripping piece 204 is in the reset position. When the tripping piece 204 is moved to the tripping position by the action of the opening protrusion 2092 or the top rod 203a of the tripping device 203, the reset spring is compressed to generate a biasing force (a biasing force urging the tripping piece 204 to move to the reset position). During the transition of the operating mechanism from the open state to the closed state, the lock 102 is reset, and the tripping piece 204 returns to the reset position under the joint action of the reset spring.

[0094] For the electric operating mechanism, it also contains a locking state, when in the locking state, that is, the electric operating mechanism is performing the electric opening operation, the opening protrusion 2092 remains in the position of the acting release 204, so that the release 204 is in the release position, at this time, even if the manual control operating mechanism performs the closing operation, it will trip because the lock 102 cannot complete the locking with the trip (that is, so that the operating mechanism cannot perform the closing operation).

[0095] The purpose of setting such a locking state can be to overhaul the line, or the line fault is not removed, or the meter is in arrears, etc. The signal source that makes the electric operating mechanism in the locking state can be given to the control component 202 by the upper computer or mobile terminal, and also can be to additionally set a locking switch on the control component 202, which is realized by the locking switch.

[0096] Here, the fourth position switch 304 is provided on the control component 202. When the electric operating mechanism is just prompting the operating mechanism to open (that is, the opening protrusion 2092 acts on the release 204), the trigger protrusion 2093 just contacts the fourth position switch 304, and the fourth position switch 304 feeds back a signal to the control component 202 when triggered. Here, the fourth position switch 304 adopts a travel switch, and of course, as an alternative, a micro switch, a hall component, a light-sensitive sensing switch and other forms of position switch can also be used.

[0097] The purpose of setting such a fourth position switch 304 is to feed back to the control component 202 in time that the output wheel 209 is in the opening position, and the control component 202 can make logical judgment according to this signal.

[0098] For the release 204, it contains a rotating part 2042, a first acting part 2043 and a second acting part 2044. The rotating part 2042 is rotationally connected with the module shell 201, that is, it is hinged on the module shell 201 through a pin shaft. The first acting part 2043 is connected with the rotating part 2042, and here the first acting part 2043 cooperates with the opening protrusion 2092. In this embodiment, the second acting part 2044 is connected with the first acting part 2043, and the second acting part 2044 extends to the vicinity of the top rod 203a of the release 203 to cooperate with the top rod 203a of the release 203. Such a structure arrangement is conducive to the cooperation of the release 204 with the release 203 and the electric operating mechanism. Of course, in addition thereto, the second acting part 2044 can also be connected with the rotating part 2042.

[0099] A cooperation hole 2045 is provided on the back surface of the trip unit 204, and the cooperation hole 2045 is used to pass one end of an assembling needle, and the other end of the assembling needle is inserted into the lock catch 102 of the operating mechanism, so that the trip unit 204 and the lock catch 102 of the operating mechanism are linked. Here, in the multi-pole circuit breaker module C, a plurality of lock catches 102 of the operating mechanism are also sequentially linked by inserting the assembling needle. Of course, the back surface of the trip unit 204 here can also be replaced by an integral protruding column instead of the assembling needle. Directly inserted into the lock catch 102 of the operating mechanism to form linkage.

[0100] An abutting column 2046 is provided on the first acting part 2043, and one end of the reset spring is connected to the abutting column 2046, and the other end of the reset spring abuts on the hook 2011 of the module shell 201.

[0101] In order to avoid over-resetting of the trip unit 204, a limiting protrusion 2012 is arranged in the module shell 201, and after reaching the reset position, the trip unit 204 can be prevented from continuing to move (continuing to reset) by abutting against the trip unit 204.

[0102] Here, for the opening protrusion 2092, when contacting the trip unit 204, a surface of the opening protrusion 2092 and a surface of the first acting part 2043 are in contact with each other. In order to better adapt to the movement track of the opening protrusion 2092, the acting surface of the opening protrusion 2092 here is an arc surface, and the acting surface of the first acting part 2043 is also an arc surface. Of course, both can also be inclined surfaces, or one inclined surface and one arc surface.

[0103] For the motor 205 and the tripper 203, the buckle connection is used to fix the module shell 201.

[0104] Specifically, the first buckle 2013 is arranged on the module shell 201, and the first buckle 2013 buckles the motor 205 on the module shell 201.

[0105] The second buckle 2014 is arranged on the module shell 201, and the second buckle 2014 buckles the tripper 203 on the module shell 201.

[0106] For the motor 205, it is lying in the module shell 201, simply speaking, the length direction of the motor 205 is consistent with the length direction of the module shell 201.

[0107] For the tripper 203, it is vertically arranged in the module shell 201, simply speaking, the length direction of the tripper 203 is perpendicular to the length direction of the module shell 201.

[0108] The arrangement of the motor 205 and the trip unit 203 is conducive to the design and arrangement of the components inside the module housing 201.

[0109] The trip unit 203 can be actuated for various reasons, which are determined by the protection functions of the control assembly 202 (not all of these protection functions are required, only one of them is sufficient).

[0110] For example, the control assembly 202 includes a leakage protection circuit, and the sampling element of the leakage protection circuit is the zero sequence transformer 400, and the execution element of the leakage protection circuit is the trip unit 203. The zero sequence transformer 400 is arranged in the circuit breaker module C, and all the main line conductors of the circuit breaker module C pass through the center hole of the zero sequence transformer 400. In this way, when a leakage occurs in the line, the control assembly 202 can send a trip signal to the trip unit 203, so that the trip unit 203 is actuated to drive the operating mechanism to perform the opening operation.

[0111] For example, the control assembly 202 includes a leakage protection circuit, and the sampling element of the leakage protection circuit is the zero sequence transformer 400, and the execution element of the leakage protection circuit is the trip unit 203. The zero sequence transformer 400 is arranged in the circuit breaker module C, and all the main line conductors of the circuit breaker module C pass through the center hole of the zero sequence transformer 400. In this way, when a leakage occurs in the line, the control assembly 202 can send a trip signal to the trip unit 203, so that the trip unit 203 is actuated to drive the operating mechanism to perform the opening operation.

[0112] Of course, in addition to the protection functions, the control assembly 202 also has the following other functions (not all of these functions are required, only one of them is sufficient).

[0113] For example, the test circuit can enable the user to effectively determine whether the leakage protection function exists. The test circuit button 600 is exposed on the reclosing module R, so that the user can press the test circuit button 600 to turn on the test circuit, and if the leakage protection function is good, the control assembly 202 will send a trip signal to the trip unit 203.

[0114] For example, the opening and closing circuit is a manually controlled electric opening and closing operation. Specifically, the opening and closing button 700 is exposed on the reclosing module R, and pressing the opening and closing button 700 can make the opening and closing circuit work to drive the electric operating mechanism to perform the opening or closing operation. If the current state is the closing state, pressing the opening and closing button 700 will make the opening and closing circuit work to drive the electric operating mechanism to perform the opening operation; if the current state is the opening state, pressing the opening and closing button 700 will make the opening and closing circuit work to drive the electric operating mechanism to perform the closing operation.

[0115] The hand-automatic switching circuit is used to switch between the manual mode and the electric mode, or the electrical interlock between the two modes. The switching switch 800 of the hand-automatic switching circuit is exposed on the surface of the reclosing module R, including the manual position and the automatic position. When the switching switch 800 is in the manual position, the control assembly 202 turns off the control function of the electric operating mechanism, and at this time, the electric mode cannot be realized, that is, the electric operating mechanism cannot operate the circuit breaker module C. When the switching switch 800 is in the automatic position, the control assembly 202 turns on the control function of the electric operating mechanism, that is, the electric operating mechanism can operate the circuit breaker module C.

[0116] The indication circuit is used to feedback the state of the circuit breaker, such as the closed state, the open state and the like, and specifically presents on the surface of the reclosing circuit breaker through the indicating lamp 900.

[0117] The communication circuit, the communication interface 1000 of the communication circuit is exposed on the reclosing module R. Through the communication interface 1000, the circuit breaker can realize communication with the upper computer, the terminal, other circuit breakers and the like. The communication interface 1000 here has many types, such as 485, modbus and the like.

[0118] The metering circuit contains a metering chip, and the sampling element of the metering circuit corresponds to the main line conductor of the circuit breaker module C. Here, the correspondence means that if the metering transformer 1100 is used as the sampling element, the metering transformer 1100 is sleeved on the main line conductor. If the manganous copper resistance is used as the sampling element, the manganous copper resistance is part of the main line conductor. Regardless of which way, the sampled information is fed back to the metering chip, and the corresponding electric energy consumption can be calculated.

[0119] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0120] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A reclosing circuit breaker, comprising a reclosing module and a circuit breaker module; the reclosing module comprises a module housing, in which a control assembly, an electric operating mechanism, a tripping device and a tripping member are arranged; the circuit breaker module comprises a circuit breaker housing, in which an operating mechanism is arranged; the electric operating mechanism is controlled by the control assembly, and is connected with the operating mechanism to drive the operating mechanism to perform a closing operation; the tripping member is rotatably arranged and is connected with a lock catch in the operating mechanism, and after the electric operating mechanism acts on the tripping member, the tripping member promotes the operating mechanism to perform an opening operation; characterized in that: The trip member extends to the side of the ejector's top rod. When the ejector receives a trip signal from the control assembly, the trip member is pushed to rotate, so that the operating mechanism performs the opening operation.

2. The reclosing circuit breaker according to claim 1, wherein: The electric operating mechanism comprises a motor, a transmission gear set, a closing gear and a handle gear; the transmission gear set comprises an input wheel and an output wheel, the output of the motor is engaged with the input wheel; the handle gear is linked with the handle of the operating mechanism, and the handle gear is engaged with the closing gear; The output wheel is provided with an opening protrusion and a closing protrusion, and the closing gear is provided with a stroke channel, in which the closing protrusion is arranged; When the output wheel rotates in the first direction, the closing protrusion acts on the channel wall of the stroke channel, so that the output wheel and the closing gear are linked, and the operating mechanism performs the closing operation; When the output wheel rotates in the second direction, the closing protrusion idles in the stroke channel, the output wheel and the closing gear are not linked, and the opening protrusion acts on the trip member, so that the operating mechanism performs the opening operation.

3. The reclosing circuit breaker according to claim 2, wherein: The trip member has a reset position and a trip position; the trip member moves to the trip position when it is acted on by the opening protrusion or the ejector's top rod; the reclosing circuit breaker further comprises a reset spring, which is connected with the trip member and provides a biasing force for the trip member to move to the reset position; the trip member returns to the reset position when the operating mechanism performs the closing operation; the electric operating mechanism comprises a locked state; when the electric operating mechanism is in the locked state, the opening protrusion is kept in the position of acting on the trip member, so that the trip member is in the trip position, and the operating mechanism cannot perform the closing operation.

4. The reclosing circuit breaker according to claim 3, wherein: The control assembly is provided with a first position switch and a second position switch; the first position switch is triggered when the handle gear is in the closing position, and the second position switch is triggered when the handle gear is in the opening position; the first position switch and the second position switch feed back signals to the control assembly when they are triggered.

5. A reclosing circuit breaker according to claim 3, characterized in that: The electric operating mechanism further comprises at least one of the following structures, Structure one: the output wheel has a free position; after the output wheel rotates in the first direction to make the operating mechanism perform the closing operation, the control assembly controls the output wheel to rotate in the second direction to the free position; during the rotation to the free position, the closing protrusion idles in the stroke channel, and the output wheel and the closing gear are not linked; Structure two: the output wheel has a free position; after the output wheel rotates in the second direction to make the operating mechanism perform the opening operation and the electric operating mechanism is not in the locked state, the control assembly controls the output wheel to rotate in the first direction to the free position; during the rotation to the free position, the closing protrusion idles in the stroke channel, and the output wheel and the closing gear are not linked.

6. A reclosing circuit breaker according to claim 5, characterized in that: The control assembly further comprises at least one of the following structures, Structure one: a third position switch; the output wheel is provided with a trigger protrusion; when the output wheel is in the free position, the trigger protrusion triggers the third position switch; the third position switch feeds back a signal to the control assembly when it is triggered. Structure two, the fourth position switch is triggered by the trigger protrusion on the output wheel, and the fourth position switch feeds back a signal to the control assembly when triggered.

7. A reclosing circuit breaker according to claim 2, characterized in that: Further comprising at least one of the following structures, Structure one, the closing gear comprises a first sector, and the handle gear comprises a second sector, and the second sector is engaged with the first sector; Structure two, further comprising an intermediate gear, the input gear and the intermediate gear are both double gears, the large gear part of the input gear is engaged with the output part of the motor, the small gear part of the input gear is engaged with the large gear part of the intermediate gear, and the small gear part of the intermediate gear is engaged with the output wheel; Structure three, the rotation center of the output wheel and the rotation center of the closing gear are coaxially arranged.

8. A reclosing circuit breaker according to claim 2, characterized in that: Further comprising at least one of the following structures, Structure one, the surface of the opening protrusion for acting on the tripping part is an arc surface or an inclined surface, and the surface of the tripping part for contacting the opening protrusion is an arc surface or an inclined surface; Structure two, the tripping part has a rotating part, a first acting part and a second acting part, the rotating part is rotationally connected with the module housing, the first acting part is connected with the rotating part, and the second acting part is connected with the rotating part or the first acting part, the first acting part is used for cooperating with the opening protrusion, and the second acting part is used for cooperating with the top rod of the tripping device; Structure three, a limiting protrusion is arranged in the module housing, the limiting protrusion is arranged on one side of the tripping part, and the tripping part is prevented from being excessively reset; Structure four, the straight-line distance from the opening protrusion to the rotation center of the output wheel is greater than the straight-line distance from the closing protrusion to the rotation center of the output wheel.

9. A reclosing circuit breaker according to claim 2, characterized in that: Further comprising at least one of the following structures, Structure one, a first buckle is arranged on the module housing, and the first buckle buckles the motor on the module housing; Structure two, a second buckle is arranged on the module housing, and the second buckle buckles the tripping device on the module housing; Structure three, the length direction of the motor is parallel to the length direction of the module housing; and structure four, the length direction of the tripping device is perpendicular to the length direction of the module housing.

10. A reclosing circuit breaker according to claim 1, characterized in that: The control assembly further comprises at least one of the following circuits, Circuit one, a test circuit, a button of the test circuit is arranged on the reclosing module, the button is pressed to make the test circuit work, and the control assembly sends a tripping signal to the tripping device; Circuit two, an opening and closing circuit, an opening and closing button of the opening and closing circuit is arranged on the reclosing module, the opening and closing button is pressed to make the opening and closing circuit work, and the control assembly controls the electric operating mechanism to perform an opening operation or a closing operation; Circuit three, a switching circuit, a switching switch of the switching circuit is exposed on the reclosing module, and the switching switch comprises a manual position and an automatic position; when in the manual position, the control assembly turns off the control function of the electric operating mechanism; and when in the automatic position, the control assembly turns on the control function of the electric operating mechanism; Circuit four, an indication circuit, the indication circuit comprises an indicator, and the indicator is used for indicating the working state of the circuit breaker; Circuit five, a communication circuit, a communication interface of the communication circuit is exposed on the reclosing module; Circuit six, a metering circuit, a sampling element of the metering circuit is arranged on the circuit breaker module, and the sampling element corresponds to the main line conductor of the circuit breaker module. Circuit seven, over-temperature protection circuit, the over-temperature protection circuit is provided with a temperature sampling element on the circuit breaker module, the temperature sampling element is used for sampling the main line conductor temperature of the circuit breaker module, when the collected temperature reaches a protection threshold, a control component sends a tripping signal to a tripping device; Circuit eight, leakage protection circuit, the leakage protection circuit is provided with a zero sequence transformer on the circuit breaker module, the main line conductor of the circuit breaker module passes through the zero sequence transformer, when there is leakage, the control component sends a tripping signal to the tripping device.

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