CN111969578A - Circuit breaker and power protection system - Google Patents
Circuit breaker and power protection system Download PDFInfo
- Publication number
- CN111969578A CN111969578A CN202010768374.3A CN202010768374A CN111969578A CN 111969578 A CN111969578 A CN 111969578A CN 202010768374 A CN202010768374 A CN 202010768374A CN 111969578 A CN111969578 A CN 111969578A
- Authority
- CN
- China
- Prior art keywords
- circuit
- breaker
- circuit breaker
- pole
- output end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
The invention relates to the field of low-voltage electrical appliances, in particular to a circuit breaker, which comprises a main contact system, a positive circuit with a positive input end and a positive output end, and a negative circuit with a negative input end and a negative output end, wherein the main contact system is connected between the positive input end and the positive output end and/or between the negative input end and the negative output end; the circuit breaker also comprises a driving circuit and an actuating mechanism which are sequentially connected between the positive circuit and the negative circuit, wherein the driving circuit comprises a one-way conduction element, the current conduction direction of the one-way conduction element is from the negative circuit of the circuit breaker to the positive circuit of the circuit breaker, and the actuating mechanism is powered to act when the driving circuit is conducted to prevent the main contact system C from being closed; according to the circuit breaker, the driving circuit and the actuating mechanism can avoid wiring errors; the invention also relates to a power supply protection system comprising the circuit breaker, and a driving circuit and an actuating mechanism of the power supply protection system can avoid wiring errors.
Description
Technical Field
The invention relates to the field of low-voltage electric appliances, in particular to a circuit breaker and a power supply protection system.
Background
The breaker is a switching device which can close, bear and break the current under the condition of a normal loop and can close, bear and break the current under the condition of an abnormal loop within a specified time, the breaker is connected into a power supply system, the breaker can perform switching-off and switching-on operations according to the working state of power grid equipment in the power supply system, and the breaker can be used for cutting off and connecting a load circuit and cutting off a fault circuit, so that the accident expansion is prevented, and the breaker has the effect of ensuring the safe operation of the power grid equipment.
When the load connected to the circuit breaker is a battery-type power supply facility, a potential safety hazard is easily caused by a battery wiring error (the positive electrode and the negative electrode of the battery are connected in reverse).
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a circuit breaker, wherein a driving circuit and an actuating mechanism of the circuit breaker can avoid wiring errors.
In order to achieve the purpose, the invention adopts the following technical scheme:
a circuit breaker comprises a main contact system C, a positive circuit with a positive input end and a positive output end, and a negative circuit with a negative input end and a negative output end, wherein the main contact system C is connected between the positive input end and the positive output end and/or between the negative input end and the negative output end; the circuit breaker is still including connecting gradually drive circuit 1 and actuating mechanism 2 between positive pole circuit and negative pole circuit, drive circuit 1 includes the one-way component that switches on, and the current direction that switches on the one-way component is from the positive pole circuit of the negative pole circuit flow direction circuit breaker of circuit breaker, and actuating mechanism 2 gets electric action when drive circuit 1 switches on, prevents main contact system C closed.
Preferably, the device comprises an operating mechanism for driving the closing and opening of the main contact system C, and the actuating mechanism 2 is in driving fit with the operating mechanism when being electrically operated, so as to prevent the main contact system C from being closed.
Preferably, the unidirectional conducting element is a diode, an anode of the diode is connected with the negative circuit, and a cathode of the diode is connected with the positive circuit.
Preferably, the operating mechanism comprises a snap-fit latch member and a jump latch member; the actuating mechanism 2 acts to drive the tripping piece to rotate and release the hasp fit with the locking piece, so that the operating mechanism is tripped to prevent the main contact system C from being closed.
Preferably, the operating mechanism further comprises a handle piece, a transmission connecting rod and a rotating plate, the handle piece and the rotating plate are respectively arranged in a pivoting mode, the locking piece and the jumping locking piece are respectively arranged on the rotating plate in a pivoting mode and are in snap fit, the handle piece is connected with the locking piece in a driving mode through the transmission connecting rod, and the rotating plate is connected with the driving contact C0 in a driving mode.
Preferably, the driving circuit 1 and the actuator 2 are connected between a negative output end and a positive output end, and the current conduction direction of the one-way conduction element is from the negative output end of the circuit breaker to the positive output end of the circuit breaker.
Preferably, the actuator 2 is an electromagnetic actuator.
Preferably, the electromagnetic actuating mechanism is a shunt release.
Preferably, the circuit breaker further comprises a linkage switch K which is linked with the active contact C0 and keeps a normally open state, and the linkage switch K is connected with the actuating mechanism 2 in series; when the operating mechanism drives the driving contact C0 and the main static contact C1 to be closed, the linkage switch K is driven to be closed before the main contact system C, and the actuating mechanism 2 is powered on to act.
Preferably, the actuator 2 is an electrically operated device, which includes an electric motor connected in series with the driving circuit 1 and a transmission gear set drivingly connected to the electric motor, and the electrically operated device prevents the main contact system C from closing through the transmission gear set.
Preferably, the electric operating device is in driving fit with the operating mechanism, so that the circuit breaker is automatically switched on/off.
Preferably, the circuit breaker further comprises an overload protection mechanism 4 and a short-circuit protection mechanism 3 which are respectively matched with the operating mechanism.
Preferably, comprising open pole and through pole circuits; the circuit of the breaker pole comprises a breaker pole input end, a breaker pole output end and a main contact system C which is connected in series between the breaker pole input end and the breaker pole output end; the through pole circuit comprises a through pole input end and a through pole output end which are connected through a conductor;
the circuit of the breaker electrode is a negative electrode circuit, the circuit of the through electrode is a positive electrode circuit, the input end of the breaker electrode and the output end of the breaker electrode are respectively a negative electrode input end and a negative electrode output end, and the input end of the through electrode and the output end of the through electrode are respectively a positive electrode input end and a positive electrode output end; or the circuit of the breaker electrode is a positive electrode circuit, the circuit of the through electrode is a negative electrode circuit, the input end of the breaker electrode and the output end of the breaker electrode are respectively a positive electrode input end and a positive electrode output end, and the input end of the through electrode and the output end of the through electrode are respectively a negative electrode input end and a negative electrode output end.
A power supply protection system comprises the circuit breaker, wherein the circuit breaker is connected between a load battery L0 and a power supply E0, and two pole input ends of the load battery L0 are respectively connected with a positive pole output end and a negative pole output end of the circuit breaker; when the two-pole input terminal of the load battery L0 is correctly wired, the driving circuit 1 of the circuit breaker is not conducted; when the two-pole input end of the load battery L0 is in wrong wiring, the driving circuit 1 of the circuit breaker is switched on, the actuating mechanism 2 of the circuit breaker is electrified to act, and the closing of the main contact system C of the circuit breaker is prevented.
The circuit breaker of the invention is characterized in that a driving circuit 1 and an actuating mechanism 2 are connected in series with a positive circuit and a negative circuit, the driving circuit 1 comprises a one-way conduction element, the current conduction direction of the one-way conduction element is from the negative circuit of the circuit breaker to the positive circuit of the circuit breaker, when an E0 power supply and a load battery L0 are correctly wired, the driving circuit 1 is not conducted, when an E0 power supply or a load battery L0 is in wrong wiring, namely the positive output end and the negative output end of the circuit breaker are respectively connected with the battery negative electrode and the battery positive electrode of the load battery L0, the driving circuit 1 is conducted, and the actuating mechanism 2 acts to prevent a main contact system C from being closed, so that the situations that the load battery L0 is burnt due to wrong wiring.
In addition, when actuating mechanism 2 can include the components and parts that are not suitable for long-time circular telegram, linkage switch K can keep normally open state before the user carries out the operation of closing a floodgate, makes actuating mechanism 2 outage, only when the user carries out the operation of closing a floodgate, makes actuating mechanism 2 get the electricity action to avoid actuating mechanism 2 to be circular telegram impaired condition for a long time, be favorable to prolonging actuating mechanism 2's life.
The invention also provides a power supply protection system, wherein the load battery load power supply is charged by the power supply through the circuit breaker, and the circuit breaker cannot be switched on or tripped when a wrong line is connected, so that the situations that the load battery L0 is burnt due to a wrong line connection and the like are avoided.
Drawings
Fig. 1 is a schematic view of the structure of the circuit breaker of the present invention;
fig. 2 is a schematic diagram of a connection structure of the circuit breaker and the load battery L0, in which the two-pole terminal of the load battery L0 is correctly connected, that is, the positive output terminal and the negative output terminal of the circuit breaker are respectively connected with the battery positive terminal and the battery negative terminal of the load battery L0;
fig. 3 is a schematic diagram of a connection structure of the circuit breaker and the load battery L0, in which the two-pole terminal of the load battery L0 is connected incorrectly, that is, the positive output terminal and the negative output terminal of the circuit breaker are connected to the battery negative electrode and the battery positive electrode of the load battery L0, respectively;
fig. 4 is a schematic diagram of the circuit breaker of the present invention, the driving circuit including a diode;
FIG. 5 is a schematic structural diagram of the circuit breaker of the present invention, wherein a ganged switch K is connected in series between the driving circuit and the actuating mechanism;
fig. 6 is a schematic structural diagram of the circuit breaker of the present invention, which at least shows the arrangement relationship of the operating mechanism, the actuator, the overload protection mechanism, the short-circuit protection mechanism and the arc extinguishing chamber.
Detailed Description
The following description will further describe embodiments of the circuit breaker of the present invention with reference to the embodiments shown in fig. 1 to 5. The circuit breaker of the present invention is not limited to the description of the following embodiments.
The utility model provides a circuit breaker, includes main contact system C, has the positive polar circuit of anodal input and anodal output, has the negative pole circuit of negative pole input and negative pole output, and main contact system C connects between anodal input and anodal output and/or connects between negative pole input and negative pole output, still including connecting gradually drive circuit 1 and actuating mechanism 2 between positive polar circuit and negative pole circuit, drive circuit 1 includes the one-way component that switches on, and the current conduction direction of one-way component is the positive polar circuit of the negative pole circuit flow direction circuit breaker from the circuit breaker, and actuating mechanism 2 gets electric action when drive circuit 1 switches on, prevents main contact system C closed.
The circuit breaker comprises a driving circuit 1 and an actuating mechanism 2 which are connected with a positive circuit and a negative circuit, wherein the driving circuit 1 comprises a one-way conduction element, the current conduction direction of the one-way conduction element is from the negative circuit of the circuit breaker to the positive circuit of the circuit breaker, when an E0 power supply and a load battery L0 are correctly wired, the driving circuit 1 is not conducted, when an E0 power supply or the load battery L0 is wrongly wired (namely, a positive output end and a negative output end of the circuit breaker are respectively connected with a battery negative electrode and a battery positive electrode of the load battery L0), the driving circuit 1 is conducted, and the actuating mechanism 2 acts to prevent a main contact system C from being closed, so that the situations that the load battery L0 is burnt due to wrong wiring and the like are avoided.
Preferably, as shown in fig. 1 to 5, the driving circuit 1 and the actuator 2 are connected in series between the positive circuit and the negative circuit in sequence.
Preferably, the circuit breaker comprises an operating mechanism for driving the closing and opening of the main contact system C, and the actuating mechanism 2 is in driving fit with the operating mechanism when being powered to prevent the closing of the main contact system C. In one embodiment, the operating mechanism comprises a snap-fit catch member and a jump catch member; the actuating mechanism 2 acts to drive the tripping piece to rotate and releases the hasp fit with the locking piece, so that the operating mechanism is tripped to prevent the main contact system C from being closed.
Preferably, the unidirectional conducting element is a diode.
Preferably, the actuator 2 is an electromagnetic actuator or an electric operating device.
Preferably, the circuit breaker further comprises a linkage switch K which is linked with the active contact C0 and keeps a normally open state, and the linkage switch K is connected with the actuating mechanism 2 in series; when the operating mechanism drives the active contact C0 and the main static contact C1 to be closed, the linkage switch K is closed before the active contact system C, and the actuating mechanism 2 is powered on to act. According to the circuit breaker, when the actuating mechanism 2 comprises the components which are not suitable for long-time electrification, the linkage switch K can be kept in the normally open state before a user performs closing operation, so that the actuating mechanism 2 is powered off, and the actuating mechanism 2 is powered on only when the user performs closing operation, so that the situation that the actuating mechanism 2 is damaged due to long-time electrification is avoided, and the service life of the actuating mechanism 2 is prolonged. It should be noted that the core function of the ganged switch K is to disconnect/connect a circuit branch formed by connecting the driving circuit 1, the ganged switch K and the actuating mechanism 2, so that specific connection positions of the ganged switch K are not specifically limited, and only the ganged switch K is arranged in the circuit branch and is connected with the actuating mechanism 2 in series, that is, the ganged switch K can be connected between the driving circuit 1 and the actuating mechanism 2 in series, or the ganged switch K, the driving circuit 1 and the actuating mechanism 2 are connected in series in sequence, or the driving circuit 1, the actuating mechanism 2 and the ganged switch K are connected in series in sequence, and the core function of the ganged switch K can be realized by the above three modes.
It should be noted that the circuit breaker of the present invention may be a small-sized circuit breaker such as a plug-in circuit breaker, a molded case circuit breaker, etc. having an operating mechanism.
The circuit breaker of the present invention will be further described with reference to the drawings and the specific embodiments.
Fig. 1 shows an embodiment of a circuit breaker CB according to the present invention.
As shown in fig. 1, the circuit breaker CB of the present invention includes a circuit breaker case (not shown in the drawings) and a breaker pole circuit and a through pole circuit respectively disposed in the circuit breaker case; the circuit of the breaker pole comprises a breaker pole input end, a breaker pole output end, an operating mechanism and a main contact system C connected between the breaker pole input end and the breaker pole output end in series, wherein the main contact system C comprises a driving contact C0 and a main static contact C1 which are matched for use, and the driving contact C0 is connected with the operating mechanism in a driving way; the through pole circuit comprises a through pole input end, a through pole output end and a through pole conductor connected between the through pole input end and the through pole output end in series; the circuit breaker also comprises a driving circuit 1 and an actuating mechanism 2 which are sequentially connected between the circuit breaker pole circuit and the through pole circuit in series, wherein the driving circuit 1 is connected with the output end of the circuit breaker pole.
As shown in fig. 1, in this embodiment, the circuit of the breaker pole is a negative pole circuit, the circuit of the through pole is a positive pole circuit, the input end of the breaker pole and the output end of the breaker pole are respectively a negative pole input end and a negative pole output end, the input end of the through pole and the output end of the through pole are respectively a positive pole input end and a positive pole output end, the driving circuit 1 and the actuator 2 are connected in series between the negative pole output end and the positive pole output end, the driving circuit 1 includes a unidirectional conductive element connected in series with the actuator 2, a current conduction direction of the unidirectional conductive element is from the negative pole output end of the breaker to the positive pole output end of the breaker, and a current conduction direction of the unidirectional conductive element in this embodiment is from the output end.
It should be noted that the through pole circuit refers to a circuit without a break point, that is, the input end and the output end of the through pole are directly connected through a conductor, and no corresponding moving contact or static contact is arranged. The circuit breaker in this embodiment is provided with one breaker pole circuit and one through pole circuit, and obviously, two breaker pole circuits can be also provided as a positive pole circuit and a negative pole circuit of the circuit breaker respectively according to needs.
And the polarity of the circuit of the breaker pole and the polarity of the circuit of the through pole can be interchanged, namely, the circuit of the breaker pole is a positive circuit, the circuit of the through pole is a negative circuit, the input end of the breaker pole and the output end of the breaker pole are respectively a positive input end and a positive output end, the input end of the through pole and the output end of the through pole are respectively a negative input end and a negative output end, and most normal circuit breakers are arranged in such a way that the current conduction direction of the unidirectional conduction element still flows from the negative output end of the circuit breaker to the positive output end of the circuit breaker, namely, the current conduction direction of the unidirectional conduction element flows from the output end of the through pole to.
Further, as shown in fig. 4, the unidirectional conducting element is a diode, an anode of the diode is connected to the negative output terminal of the circuit breaker, and a cathode of the diode is connected to the positive output terminal of the circuit breaker. Specifically, as shown in fig. 4, the current conducting direction of the unidirectional conductive element in this embodiment is from the open pole circuit to the through pole circuit.
As shown in fig. 2 and 3, the circuit breaker of this embodiment is connected between the load battery L0 and the power supply E0, and in practical use, the power supply E0 charges the load battery L0 through the circuit breaker of the present invention, the positive pole and the negative pole of the power supply E0 are respectively connected to the positive input terminal and the negative input terminal, and when the load battery L0 is wired to the circuit breaker, the following two situations occur:
in the first case, the two-pole input terminal of the load battery L0 is correctly connected, as shown in fig. 2, the positive output terminal and the negative output terminal of the circuit breaker are respectively connected to the battery positive terminal and the battery negative terminal of the load battery L0, the driving circuit 1 is connected to the battery negative terminal of the load battery L0 through the negative output terminal, and the driving circuit 1 is not conducted at this time due to the single-phase conduction of the diode.
In the second case, as shown in fig. 3, when the two-pole input terminal of the load battery L0 is connected incorrectly, the positive output terminal and the negative output terminal of the circuit breaker are respectively connected to the battery negative terminal and the battery positive terminal of the load battery L0, the driving circuit 1 is connected to the battery positive terminal of the load battery L0 through the negative output terminal, and the diode is turned on, so that the actuator 2 is powered on to prevent the main contact system C from being closed, thereby preventing the load battery L0 from being burnt.
In addition, when a wiring error occurs in the power supply E0 (not shown in the figure), the positive electrode and the negative electrode of the power supply E0 are respectively connected with the negative electrode input end and the positive electrode input end, referring to fig. 1, when the main contact system C is closed, the driving circuit 1 is turned on, the actuator 2 is powered on to drive the main contact system C to be turned off, and protection after the circuit breaker is switched on under the condition that the power supply E0 is connected with a wrong line can be achieved.
Preferably, the driving circuit 1 and the actuator 2 are connected in series between the negative output end and the positive output end, the current conduction direction of the one-way conduction element flows from the negative output end of the circuit breaker to the positive output end of the circuit breaker, the driving circuit 1 and the actuator 2 are connected in series at the output side of the main contact system C to avoid long-term electrification, and protection before closing of the circuit breaker of the load battery L0 can be realized.
Preferably, the actuator 2 is in driving engagement with the operating mechanism, preventing the main contact system C from closing. In one embodiment, the operating mechanism comprises a snap-fit catch member and a jump catch member; the actuating mechanism 2 acts to drive the tripping piece to rotate and releases the hasp fit with the locking piece, so that the operating mechanism is tripped to prevent the main contact system C from being closed. Further, the operating mechanism further comprises a handle piece, a transmission connecting rod and a rotating plate, the handle piece and the rotating plate are respectively arranged in a pivoting mode, the handle piece and the rotating plate can be respectively arranged on the shell of the circuit breaker in a pivoting mode, the handle piece is connected with the locking piece in a driving mode through the transmission connecting rod, the locking piece and the tripping piece are respectively arranged on the rotating plate in a pivoting mode and are in snap fit, a connecting rod structure is formed, the driving contact C0 is connected with the rotating plate, the handle piece rotates to drive the rotating plate to rotate through the locking piece, the driving contact C0 is driven to be in contact with and separated from the main static contact C1, and switching-on and switching-off of. Obviously, the operating mechanism can also be in other four/five-bar linkage structures.
Preferably, the circuit breaker CB also comprises an overload protection mechanism 4 and a short-circuit protection mechanism 3 which are respectively matched with the operating mechanism in a driving way, when the circuit breaker CB has a short circuit or an overload fault, the overload protection mechanism 4 or the short-circuit protection mechanism 3 drives the tripping piece to rotate and remove the hasp matching with the locking piece, and the circuit breaker is switched off or tripped through the operating mechanism.
Preferably, the circuit breaker CB of the present invention further comprises an arc extinguishing chamber 5 cooperating with the main contact system C for extinguishing an arc generated when the main contact C0 and the main stationary contact C1 are closed/opened.
Preferably, the actuator 2 can be implemented in various forms, in particular:
the first form: the actuating mechanism 2 is an electromagnetic actuating mechanism, when the two-pole input end of the load battery L0 is in wrong wiring, the electromagnetic actuating mechanism drives the tripping piece to rotate and releases the snap fit with the locking piece, the operating mechanism fails, and the circuit breaker CB cannot be switched on. Preferably, the electromagnetic actuating mechanism comprises an electromagnetic coil. Preferably, the electromagnetic actuating mechanism is a shunt release.
Preferably, as shown in fig. 5, the circuit breaker of the present invention further includes a linking switch K linked with the active contact C0 and kept in a normally open state, wherein the linking switch K is connected in series between the driving circuit 1 and the actuator 2; when the operating mechanism drives the driving contact C0 and the main static contact C1 to be closed, the operating mechanism drives the linkage switch K to be closed before the main contact system, so that the actuating mechanism 2 is powered firstly under the condition of wrong wire connection. Furthermore, the contact opening distance of the linkage switch K can be set to be smaller than that of the main contact system C, and the linkage switch K can be closed before the main contact system C. The ganged switch K can of course also be closed before the main contact C in other ways, which will not be described in detail here. The ganged switch may be a microswitch.
The second form: the actuating mechanism 2 is an electric operating device which comprises a motor connected with the driving circuit 1 in series and a transmission gear set connected with the motor in a driving way, and the transmission gear set is matched with the operating mechanism in a driving way; when the wiring of the two-pole wiring terminal of the load battery L0 is wrong, the electric operating device is powered on, the motor drives the tripping piece to rotate through the transmission gear set and releases the hasp fit with the tripping piece, the operating mechanism is tripped and fails, and the circuit breaker CB cannot be switched on. Furthermore, the electric operating device also comprises a linkage element, and the transmission gear set is connected with the jump buckle piece in a driving mode through the linkage element.
Preferably, when the two-pole terminal of the load battery L0 is correctly connected, the electric operating device is in driving fit with the operating mechanism, so that the circuit breaker automatically closes/opens, that is, the electric operating device can also be used as a structure for remotely controlling the circuit breaker CB to close/open.
Preferably, the actuator 2 may also prevent the main contact system C from closing without tripping the actuating mechanism, for example by pivoting a limit handle or a pivoting plate. The electric operating device is powered on when the wiring is wrong, and the motor drives the linkage element to be inserted into the limiting groove through the transmission gear set, so that the handle piece or the rotating plate cannot be switched on in a rotating mode. Of course, this solution does not facilitate the opening of a circuit breaker that is already closed at the time.
Preferably, as shown in fig. 6, another embodiment of the circuit breaker of the present invention is provided.
As shown in fig. 6, an insertion type circuit breaker includes an operation button, an operation mechanism, an overload protection mechanism 4, an arc extinguish chamber 5 and a short-circuit protection mechanism 3, wherein the overload protection mechanism 4 and the operation mechanism are arranged side by side, the arc extinguish chamber 5 and the short-circuit protection mechanism 3 are arranged side by side and are located below the overload protection mechanism 4 and the operation mechanism, and a breaker pole output end and a through pole output end are arranged side by side below the arc extinguish chamber 5 and the short-circuit protection mechanism 3 and are located at the lower end of a circuit breaker housing; the operating button is connected with the operating mechanism through a first connecting rod in a driving mode, and the circuit breaking pole input end, the direct connection pole input end and the operating button are arranged at the upper end of the circuit breaker shell.
Preferably, as shown in fig. 6, the actuating mechanism 2 is a shunt release, and the shunt release and the short-circuit protection mechanism 3 are integrated modules, and are respectively in driving fit with a trip piece of the operating mechanism, which is the prior art in the field and is not described again.
Preferably, as shown in fig. 6, the operating mechanism includes a locking member, a tripping member and a rotating plate, the locking member and the tripping member are respectively pivotally disposed on the rotating plate, the rotating plate is drivingly connected to the active contact C0, and the operating button is drivingly connected to the locking member through a first link.
The circuit breaker can be a small circuit breaker such as a plug-in circuit breaker with an operating mechanism, a molded case circuit breaker and the like, wherein a handle piece of the molded case circuit breaker extends out of the shell, and the handle piece drives the circuit breaker to be switched on and off.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A circuit breaker, includes main contact system (C), the positive circuit that has anodal input and anodal output, the negative circuit that has negative pole input and negative pole output, main contact system (C) is connected between anodal input and anodal output and/or is connected between negative pole input and negative pole output, its characterized in that: the circuit breaker is still including connecting in proper order drive circuit (1) and actuating mechanism (2) between positive circuit and negative pole circuit, drive circuit (1) includes the one-way conduction component, and the current conduction direction of one-way conduction component is from the positive circuit of the negative pole circuit flow direction circuit to circuit breaker of circuit breaker, and actuating mechanism (2) get electric action when drive circuit (1) switches on, prevent that main contact system (C) is closed.
2. The circuit breaker of claim 1, wherein: the electric control device comprises an operating mechanism for driving the main contact system (C) to be closed and opened, and the actuating mechanism (2) is in driving fit with the operating mechanism when being powered to act, so that the main contact system (C) is prevented from being closed.
3. The circuit breaker of claim 1, wherein: the unidirectional conducting element is a diode, the anode of the diode is connected with the negative circuit, and the cathode of the diode is connected with the positive circuit.
4. The circuit breaker of claim 2, wherein: the operating mechanism comprises a hasp piece and a jump piece which are in hasp fit; the actuating mechanism (2) acts to drive the tripping piece to rotate and release the hasp fit with the locking piece, so that the operating mechanism is tripped to prevent the main contact system (C) from being closed.
5. The circuit breaker of claim 4, wherein: the operating mechanism further comprises a handle piece, a transmission connecting rod and a rotating plate, wherein the handle piece and the rotating plate are respectively arranged in a pivoting mode, the locking piece and the jump buckle piece are respectively arranged on the rotating plate in a pivoting mode and are in hasp fit, the handle piece is connected with the locking piece in a driving mode through the transmission connecting rod, and the rotating plate is connected with the driving contact (C0) in a driving mode.
6. The circuit breaker of claim 1, wherein: the drive circuit (1) and the actuating mechanism (2) are connected between the negative output end and the positive output end, and the current conduction direction of the one-way conduction element is from the negative output end of the breaker to the positive output end of the breaker.
7. The circuit breaker according to any one of claims 1-6, wherein: the actuating mechanism (2) is an electromagnetic actuating mechanism.
8. The circuit breaker of claim 7, wherein: the electromagnetic actuating mechanism is a shunt release.
9. The circuit breaker of claim 2, wherein: the circuit breaker also comprises a linkage switch K which is linked with the active contact (C0) and keeps a normally open state, and the linkage switch K is connected with the actuating mechanism (2) in series; when the operating mechanism drives the driving contact (C0) and the main static contact (C1) to be closed, the linkage switch K is driven to be closed before the main contact system (C), and the actuating mechanism (2) is powered on to act;
the executing mechanism (2) is an electric operating device, the electric operating device comprises a motor connected with the driving circuit (1) in series and a transmission gear set connected with the motor in a driving mode, and the electric operating device prevents the main contact system (C) from being closed through the transmission gear set;
the electric operating device is in driving fit with the operating mechanism, so that the circuit breaker is automatically switched on/off;
the circuit breaker also comprises an overload protection mechanism (4) and a short-circuit protection mechanism (3) which are respectively matched with the operating mechanism;
comprises an open pole circuit and a through pole circuit; the circuit of the breaker pole comprises a breaker pole input end, a breaker pole output end and a main contact system (C) which are connected in series between the breaker pole input end and the breaker pole output end; the through pole circuit comprises a through pole input end and a through pole output end which are connected through a conductor;
the circuit of the breaker electrode is a negative electrode circuit, the circuit of the through electrode is a positive electrode circuit, the input end of the breaker electrode and the output end of the breaker electrode are respectively a negative electrode input end and a negative electrode output end, and the input end of the through electrode and the output end of the through electrode are respectively a positive electrode input end and a positive electrode output end; or the circuit of the breaker electrode is a positive electrode circuit, the circuit of the through electrode is a negative electrode circuit, the input end of the breaker electrode and the output end of the breaker electrode are respectively a positive electrode input end and a positive electrode output end, and the input end of the through electrode and the output end of the through electrode are respectively a negative electrode input end and a negative electrode output end.
10. A power protection system, characterized by: the circuit breaker comprises the circuit breaker of any one of claims 1 to 9, wherein the circuit breaker is connected between a load battery L0 and a power supply E0, and two pole input ends of a load battery L0 are respectively connected with a positive pole output end and a negative pole output end of the circuit breaker; when the two-pole input terminal of the load battery L0 is correctly connected, the driving circuit (1) of the circuit breaker is not conducted; when the two-pole input end of the load battery L0 is in wrong wiring, a driving circuit (1) of the circuit breaker is conducted, an actuating mechanism (2) of the circuit breaker is electrified to act, and a main contact system (C) of the circuit breaker is prevented from being closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010768374.3A CN111969578A (en) | 2020-08-03 | 2020-08-03 | Circuit breaker and power protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010768374.3A CN111969578A (en) | 2020-08-03 | 2020-08-03 | Circuit breaker and power protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111969578A true CN111969578A (en) | 2020-11-20 |
Family
ID=73363512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010768374.3A Pending CN111969578A (en) | 2020-08-03 | 2020-08-03 | Circuit breaker and power protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111969578A (en) |
-
2020
- 2020-08-03 CN CN202010768374.3A patent/CN111969578A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101059585B1 (en) | Load switch | |
| CN212783318U (en) | Circuit breaker | |
| CN108061838B (en) | Electric leakage test method for ensuring normal electricity consumption of user | |
| CN108400066B (en) | Single-stage circuit breaker | |
| CN212676893U (en) | Circuit breaker and power protection system | |
| CN111969578A (en) | Circuit breaker and power protection system | |
| CN217362568U (en) | Closing and separating loop of pole-mounted circuit breaker | |
| CN212136379U (en) | Double-mechanism double-handle integrated leakage circuit breaker | |
| CN212676128U (en) | Maintenance electrician short circuit device | |
| CN214588674U (en) | Residual current operated circuit breaker of multimode electricity-taking | |
| CN210805670U (en) | Novel circuit breaker equipment | |
| CN213519824U (en) | Circuit breaker | |
| CN113889377A (en) | Circuit breaker | |
| CN218123337U (en) | Automatic reclosing circuit breaker | |
| CN215869238U (en) | Circuit breaker | |
| CN213366510U (en) | Rotary circuit breaker structure of environment-friendly voltage cabinet | |
| CN215527512U (en) | Interlocking structure of circuit breaker and circuit breaker system | |
| CN215869174U (en) | Plug-in circuit breaker | |
| CN217061962U (en) | Novel double-column type miniature circuit breaker capable of preventing wiring looseness | |
| CN212783344U (en) | Circuit breaker | |
| CN219716775U (en) | Miniature circuit breaker | |
| CN214505410U (en) | Small-sized circuit breaker | |
| CN211508591U (en) | Multifunctional relay protection system of high-voltage circuit breaker | |
| CN219717877U (en) | Under-voltage protection device and wire plug row with same | |
| CN220233059U (en) | Leakage circuit breaker and electricity taking structure thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230314 Address after: 325603 No.1 Zhengtai Road, Zhengtai Industrial Park, beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province Applicant after: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Applicant after: Huawei Digital Energy Technology Co.,Ltd. Address before: No.1 Zhengtai Road, Zhengtai Industrial Park, beibaixiang Town, Yueqing City, Zhejiang Province Applicant before: ZHEJIANG CHINT ELECTRICS Co.,Ltd. |
|
| TA01 | Transfer of patent application right |