A multifunctional intelligent circuit breaker

Abstract

The present invention discloses a multifunctional intelligent circuit breaker, comprising a housing and a power pole component, an intelligent electric control pole component, an L pole component and an N pole component installed in the housing; the intelligent circuit breaker also comprises a PE current protection pole component, and the PE current protection pole component is arranged between the power pole component, the intelligent electric control pole component and the L pole component and the N pole component; the PE current protection pole component comprises a lever mounted on the housing, a moving contact and a static contact mounted in the housing, and a lock release component connected between the lever and the moving contact; the PE current protection pole component also comprises a current transformer installed in the housing. The present invention can realize PE pole current protection; and can improve the product tripping force so that the product can withstand a 35kA surge current, and achieve the purpose of not tripping the product when the surge waveform impacts 35kA and not being damaged when the surge waveform impacts 40kA.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breakers, and in particular relates to a multifunctional intelligent circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect the current under normal circuit conditions and can close, carry and disconnect the current under abnormal circuit conditions within a specified time. An intelligent circuit breaker is a type of circuit breaker. It collects the current of each phase through a mutual inductor, compares it with the set value through a microprocessor, and then issues a command to make the electronic release act to drive the mechanism to trip. The intelligent circuit breaker in the prior art usually includes a housing and a power pole component, an intelligent electric control pole component, an L pole component and an N pole component installed in the housing, and the power pole component and the intelligent electric control pole component are distributed on one side of the housing, and the L pole component and the N pole component are distributed on the other side of the housing. The L pole component and the N pole component both include a lever mounted on the housing, a moving and static contact mounted in the housing, and a lock release component connected between the lever and the moving contact. The intelligent electric control pole component is linked with the lock release component of the L pole component and the N pole component to realize the opening or closing of the L pole component and the N pole component under the operation control of the intelligent electric control pole component. The intelligent circuit breaker of the prior art has the following main drawbacks:

[0003] 1. Lack of PE line current protection can easily cause hidden dangers that endanger personal and equipment safety; when multiple protections need to be provided, multiple protectors need to be installed, resulting in the disadvantages of occupying large equipment space, high maintenance costs, and difficulty in installation; for example, when adding PE line current protection, a wire is usually used to connect the corresponding equipment as the PE pole, and then the sampling transformer that should collect the PE pole current is directly hung on the wire, which increases the installation difficulty for on-site construction personnel.

[0004] 2. After being struck by lightning and surge current (such as 35kA surge current), tripping or equipment damage is very likely to occur, and the mutual influence of the tripping components in the L-pole component and the N-pole component will cause torque imbalance and twisting, thus affecting the performance of the product. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a multifunctional intelligent circuit breaker. Through structural improvement, on the one hand, PE pole current protection can be achieved; on the other hand, the product tripping force can be improved so that the product can withstand a 35kA surge current, achieving the purpose of the product not tripping when the surge waveform impacts 35kA and not being damaged when the surge waveform impacts 40kA.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a multifunctional intelligent circuit breaker, comprising a housing and a power supply pole component, an intelligent electric control pole component, an L pole component and an N pole component installed in the housing, wherein the power supply pole component and the intelligent electric control pole component are distributed on one side of the housing, and the L pole component and the N pole component are distributed on the other side of the housing, wherein the L pole component and the N pole component both comprise a lever mounted on the housing, a moving contact and a stationary contact mounted in the housing, and a lock release component connected between the lever and the moving contact; the intelligent electric control pole component is connected to the lock release components of the L pole component and the N pole component, so as to realize the control of the intelligent electric control pole component. The opening or closing of the moving and static contacts of the L-pole component and the N-pole component; the intelligent circuit breaker also includes a PE current protection pole component, which is arranged between the power pole component, the intelligent electric control pole component and the L-pole component and the N-pole component; the PE current protection pole component includes a lever mounted on the shell, moving and static contacts mounted in the shell, and a lock release component connected between the lever and the moving contact; the PE current protection pole component also includes a current transformer installed in the shell, the wiring of the moving contact or the static contact passes through the current transformer, and the output of the current transformer is connected to the intelligent electric control pole component, thereby realizing PE current protection.

[0007] The installation position of the intelligent electrically-operated control pole component in the shell is closer to the installation position of the PE current protection pole component in the shell than the installation position of the power supply pole component in the shell; the intelligent electrically-operated control pole component is connected to the lock and release component of the PE current protection pole component to realize the opening or closing of the moving and static contacts of the PE current protection pole component under the control of the intelligent electrically-operated control pole component.

[0008] The installation position of the L-pole component in the shell is closer to the installation position of the PE current protection pole component in the shell than the installation position of the N-pole component in the shell; thereby, the lock and release components of the PE current protection pole component and the lock and release components of the N-pole component are respectively provided on both sides of the lock and release components of the L-pole component, so that when the lock and release components of the L-pole component are impacted by a 35kA surge current and generate an impact force, the torque generated by the reaction force of the lock and release components of the PE current protection pole component and the lock and release components of the N-pole component on both sides of the L-pole component can be balanced, thereby preventing the overall twisting of the lock and release components.

[0009] There is one L-pole component.

[0010] The number of the L-pole components is two or more and they are arranged side by side.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The present invention adopts the method of adding a PE current protection pole component to the intelligent circuit breaker, and the PE current protection pole component is arranged between the power pole component, the intelligent electric control pole component and the L pole component and the N pole component. The PE current protection pole component includes a lever mounted on the housing, a moving contact and a static contact mounted in the housing, and a lock release component connected between the lever and the moving contact; the PE current protection pole component also includes a current transformer mounted in the housing, the wiring of the moving contact or the static contact passes through the current transformer, and the output of the current transformer is connected to the intelligent electric control pole component. This structure of the present invention can realize PE pole current protection.

[0013] 2. The present invention adopts the method of making the installation position of the L-pole component in the housing closer to the installation position of the PE current protection pole component in the housing relative to the installation position of the N-pole component in the housing. This distribution of the present invention enables the lock and release components of the PE current protection pole component and the lock and release components of the N-pole component to be provided on both sides of the lock and release components of the L-pole component, respectively. In this way, when the lock and release components of the L-pole component are impacted by a 35kA surge current and generate an impact force, the torque generated by the reaction force of the lock and release components of the PE current protection pole component and the lock and release components of the N-pole component on both sides of the L-pole component can be balanced, thereby preventing the lock and release components from being twisted as a whole.

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the plastic-injected mechanical switch of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a three-dimensional shape of an embodiment of the present invention;

[0016] Figure 2 is a front view of an embodiment of the present invention;

[0017] Figure 3 is a bottom view of an embodiment of the present invention;

[0018] Figure 4 It is a partial structural schematic diagram of an embodiment of the present invention;

[0019] Figure 5 Schematic diagram of the distribution of the lock release components of the L pole component, the N pole component and the PE current protection pole component of the embodiment of the present invention;

[0020] Figure 6 It is a schematic diagram of the forces acting on the lock and release components of the L-pole component, the N-pole component and the PE current protection pole component of the embodiment of the present invention. DETAILED DESCRIPTION

[0021] Example

[0022] See also Figures 1 to 6 As shown, a multifunctional intelligent circuit breaker of the present invention comprises a housing 1 and a power supply pole component 2, an intelligent electric control pole component 3, an L pole component 4 and an N pole component 5 installed in the housing, and the power supply pole component 2 and the intelligent electric control pole component 3 are distributed on one side of the housing 1, and the L pole component 4 and the N pole component 5 are distributed on the other side of the housing 1, the L pole component 4 comprises a lever button 41 mounted on the housing, a moving contact and a stationary contact mounted in the housing, and a lock release component 42 connected between the lever button and the moving contact; the N pole component 5 comprises a lever button 51 mounted on the housing, a moving contact and a stationary contact mounted in the housing, and a lock release component 52 connected between the lever button and the moving contact; the intelligent electric control pole component 3 is connected to the lock release components 42, 52 of the L pole component 4 and the N pole component 5, so as to Under the control of the intelligent electric control pole component 3, the opening or closing of the moving and static contacts of the L pole component 4 and the N pole component 5 is realized; the intelligent circuit breaker also includes a PE current protection pole component 6, which is arranged between the power supply pole component 2, the intelligent electric control pole component 3 and the L pole component 4, the N pole component 5; the PE current protection pole component 6 includes a lever 61 installed on the shell, moving and static contacts installed in the shell, and a lock release component 62 connected between the lever and the moving contact; the PE current protection pole component 6 also includes a current transformer 63 installed in the shell, the wiring of the moving contact or the static contact passes through the current transformer 63, and the output of the current transformer 63 is connected to the intelligent electric control pole component 3, thereby realizing PE current protection.

[0023] In this embodiment, the installation position of the intelligent electrically controlled pole component 3 in the shell 1 is closer to the installation position of the PE current protection pole component 6 in the shell relative to the installation position of the power supply pole component 2 in the shell; the intelligent electrically controlled pole component 3 is connected to the lock release component 62 of the PE current protection pole component 6 to realize the opening or closing of the moving and static contacts of the PE current protection pole component 6 under the control of the intelligent electrically controlled pole component 3.

[0024] In this embodiment, there is one L-pole component 4 .

[0025] In this embodiment, the installation position of the L-pole component 4 in the housing is closer to the installation position of the PE current protection pole component 6 in the housing relative to the installation position of the N-pole component 5 in the housing; so that the two sides of the lock release component 42 of the L-pole component 4 are respectively provided with the lock release component 62 of the PE current protection pole component 6 and the lock release component 52 of the N-pole component 5, so that when the lock release component 42 of the L-pole component 4 is impacted by a 35kA surge current and generates an impact force, the torque generated by the reaction force of the lock release component 62 of the PE current protection pole component 6 and the lock release component 52 of the N-pole component 5 on both sides of the L-pole component 4 can be balanced, thereby preventing the overall twisting of the lock release component. Figure 6 As shown, the impact force F of the intelligent circuit breaker at a surge current of 35kA mainly acts on the lock and release component 42 of the L-pole component 4, generating a corresponding torque M1, and the reaction forces of the lock and release component 62 of the PE current protection pole component 6 and the lock and release component 52 of the N-pole component 5 on both sides of the lock and release component 42 of the L-pole component 4 generate torques M2 and M3 respectively. Since the torques M2 and M3 are balanced on both sides of the lock and release component 42 of the L-pole component 4, the entire lock and release component (including the lock and release component 62 of the PE current protection pole component 6, the lock and release component 42 of the L-pole component 4 and the lock and release component 52 of the N-pole component 5) will not be twisted, thereby ensuring the performance of the product.

[0026] A multifunctional intelligent circuit breaker of the present invention adopts a method of adding a PE current protection pole component 6 to the intelligent circuit breaker, and the PE current protection pole component 6 is arranged between the power pole component 2, the intelligent electric control pole component 3 and the L pole component 4, the N pole component 5, and the PE current protection pole component 6 includes a lever 61 installed on the housing, a moving contact and a static contact installed in the housing, and a lock release component 62 connected between the lever and the moving contact; the PE current protection pole component 6 also includes a current transformer 63 installed in the housing, the wiring of the moving contact or the static contact passes through the current transformer 63, and the output of the current transformer 63 is connected to the intelligent electric control pole component 2. This structure of the present invention can realize PE pole current protection.

[0027] A multifunctional intelligent circuit breaker of the present invention adopts a method of making the installation position of the L-pole component 4 in the housing closer to the installation position of the PE current protection pole component 6 in the housing relative to the installation position of the N-pole component 5 in the housing. This distribution of the present invention enables the lock and release components 62 of the PE current protection pole component 6 and the lock and release components 52 of the N-pole component 5 to be provided on both sides of the lock and release component 42 of the L-pole component 4, respectively. In this way, when the lock and release component 42 of the L-pole component 4 is impacted by a 35kA surge current and generates an impact force, the torque generated by the reaction force of the lock and release components 62 of the PE current protection pole component 6 and the lock and release components 52 of the N-pole component 5 on both sides of the L-pole component 4 can be balanced, thereby preventing the lock and release components from being twisted as a whole.

[0028] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above, or modify it into an equivalent equivalent embodiment without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A multifunctional intelligent circuit breaker, comprising a housing and a power supply pole component, an intelligent electric control pole component, an L pole component and an N pole component installed in the housing, wherein the power supply pole component and the intelligent electric control pole component are distributed on one side of the housing, and the L pole component and the N pole component are distributed on the other side of the housing, wherein the L pole component and the N pole component each comprise a lever mounted on the housing, a moving contact and a stationary contact mounted in the housing, and a lock release component connected between the lever and the moving contact; the intelligent electric control pole component is connected to the lock release component of the L pole component and the N pole component, so as to realize the opening or closing of the moving contact and the stationary contact of the L pole component and the N pole component under the control of the intelligent electric control pole component; Features: The multifunctional intelligent circuit breaker also includes a PE current protection pole component, which is arranged between the power pole component, the intelligent electric control pole component and the L pole component and the N pole component; the PE current protection pole component includes a lever mounted on the shell, a moving contact and a static contact mounted in the shell, and a lock release component connected between the lever and the moving contact; the PE current protection pole component also includes a current transformer mounted in the shell, the wiring of the moving contact or the static contact of the PE current protection pole component passes through the current transformer, and the output end of the current transformer is connected to the intelligent electric control pole component, thereby realizing PE current protection.

2. The multifunctional intelligent circuit breaker according to claim 1, Features: The installation position of the intelligent electric control pole component in the housing is closer to the installation position of the PE current protection pole component in the housing than the installation position of the power supply pole component in the housing; The intelligent electric control pole component is connected to the lock release component of the PE current protection pole component to realize the opening or closing of the moving contact and the static contact of the PE current protection pole component under the control of the intelligent electric control pole component.

3. The multifunctional intelligent circuit breaker according to claim 2, Features: The installation position of the L-pole component in the housing is closer to the installation position of the PE current protection pole component in the housing than the installation position of the N-pole component in the housing; Thereby, the lock release component of the L-pole component is provided with the lock release component of the PE current protection pole component and the lock release component of the N-pole component on both sides respectively, so that when the lock release component of the L-pole component is impacted by a 35kA surge current and generates an impact force, the torque generated by the reaction force of the lock release component of the PE current protection pole component and the lock release component of the N-pole component on both sides of the L-pole component can be balanced, thereby preventing the overall twisting of the lock release component of the L-pole component.

4. The multifunctional intelligent circuit breaker according to claim 1, 2 or 3, Features: There is one L-pole component.

5. The multifunctional intelligent circuit breaker according to claim 1, 2 or 3, Features: There are two or more L-pole components distributed side by side.

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