CN212934538U - Layout structure of molded case circuit breaker and circuit breaker with N-level structure - Google Patents

Abstract

The utility model provides a moulded case circuit breaker's overall arrangement structure and N level structure's circuit breaker which characterized in that: well lid (1) and base (2) are assembled together in upper and lower direction each other, and base (2) and base (3) are assembled together in upper and lower direction each other, the inside after well lid (1) and base (2) are assembled together is equipped with space (a), the inside after base (2) and base (3) are assembled together each other is equipped with space two (b), space one (a) includes left cavity (a1) and right cavity (a2), and mechanism (10) and pivot (4) set up in space one (a), and explosion chamber (5) and release (7) set up in space two (b). By adjusting the internal layout structure of the molded case circuit breaker, the space is fully utilized to accommodate more arc extinguishing chambers; the possibility of the arc particles being blowback attached to the actuator is reduced. Meanwhile, the modularized installation is realized, and the assembly and maintenance difficulty of the molded case circuit breaker is greatly reduced.

Description

Layout structure of molded case circuit breaker and circuit breaker with N-level structure

Technical Field

The utility model belongs to the technical field of the circuit breaker, specifically say so and relate to a moulded case circuit breaker's layout structure N level structure's circuit breaker.

Background

The moulded case circuit breaker is a low-voltage circuit protection device and has the functions of overload, short circuit and undervoltage protection. The circuit breakers are of various types, wherein the molded case circuit breakers are commonly used, and the housing adopts a plastic insulator for isolating the metal part from the conductor and grounding the metal part. When the current exceeds a set value, the molded case circuit breaker can automatically cut off the current, and the effect of protecting the load is achieved.

The current high voltage moulded case circuit breaker structural style generally distributes for the left side is well right, and the explosion chamber cavity undersize can't arrange more explosion chambers, and the explosion chamber is in same cavity with operating device simultaneously, has the electric arc particle blowback to adhere to operating device, leads to the mechanism to be blocked or burns out, and the circuit breaker has functional inefficacy risk.

Chinese patent ZL201820936981.4 discloses an optimized circuit breaker layout structure, including arc extinguishing system, static contact, moving contact, mechanism, release and pivot, still include left lid and right lid, and left lid and right lid dock each other in left and right direction and form overall structure, and release and mechanism locate outside overall structure, and arc extinguishing system, static contact, moving contact and pivot are located overall structure. This patent technique still provides the circuit breaker overall arrangement structure of N level structure of optimizing, and 2 is no less than 4 for N, including N foretell overall structure, all overall structure arrange side by side, above-mentioned release reach the mechanism locate outside arbitrary overall structure. The patented technology has good isolation performance; excellent insulation capacity between phases and between inlet and outlet lines; the breaking capacity under high voltage level is higher; the problem of particle blowback is solved. However, in the technical scheme, the arc extinguish chamber cavity is too small, more arc extinguish chambers cannot be arranged, and the installation of parts is complex.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a layout structure of the molded case circuit breaker aiming at the technical defects that the layout arc-extinguishing chamber cavity of the existing molded case circuit breaker is too small, more arc-extinguishing chambers cannot be arranged, and the installation of parts is complicated, and the space is fully utilized to accommodate more arc-extinguishing chambers by adjusting the internal layout structure of the molded case circuit breaker; the possibility of the arc particles being blowback attached to the actuator is reduced. Meanwhile, each functional component in the molded case circuit breaker can be installed in a modularized mode by adjusting the internal layout structure of the molded case circuit breaker, and the assembly and maintenance difficulty of the molded case circuit breaker is greatly reduced.

Technical scheme

In order to realize the technical purpose, the utility model provides a pair of moulded case circuit breaker's layout structure, it includes well lid, base and base, its characterized in that: the middle cover and the base are assembled together in the vertical direction, the base and the base are assembled together in the vertical direction, a first space is arranged inside the middle cover and the base after the middle cover and the base are assembled together, a second space is arranged inside the base and the base after the base and the base are assembled together, the mechanism and the rotating shaft are arranged in the first space, and the arc extinguish chamber and the release are arranged in the second space. The arc extinguish chamber completely occupies the space at the lower part of the base, under the condition that the overall appearance size of the product is not increased, the number of the grid pieces arranged in the arc extinguish chamber is far more than that of the existing molded case circuit breakers on the market, the capacity of the arc extinguish chamber is maximized, the breaking capacity of the arc extinguish chamber under the high-voltage grade application is improved, meanwhile, electric arcs can be elongated to uniformly enter the arc extinguish chamber, and the transfer speed of the electric arcs is accelerated.

Furthermore, the loop structure is located in the second space, and the arc extinguish chamber and the fixed contact are located in the second space and surrounded by the loop structure.

Furthermore, the first space comprises a left cavity and a right cavity, the mechanism is arranged in the left cavity, the rotating shaft is arranged in the right cavity, the arc extinguish chamber is arranged in the second space and is positioned on the right side of the second space, the mounting end of the moving contact is connected with the rotating shaft, and the release is arranged in the left cavity and is positioned on the left side of the mechanism.

Furthermore, the second space is provided with an air outlet channel communicated with the outside.

Furthermore, the contact end of the moving contact and the contact position of the static contact are arranged on the upper part of the second space.

Furthermore, relative isolation ribs are arranged between the left chamber and the right chamber and are in a relative isolation state.

Furthermore, a space is arranged between the right chamber and the second space and communicated with each other, and the space is only used for moving the movable contact. By adopting the structure, a larger channel for gas leakage is not provided, and the possibility of back-spraying of a large amount of charged particles is avoided in the breaking process.

The utility model also provides a circuit breaker of N level structure, 2 be less than or equal to N be less than or equal to 4, a serial communication port, including a N foretell layout structure, layout structure arrange side by side.

Advantageous effects

The utility model provides a layout structure of a molded case circuit breaker and a circuit breaker with an N-level structure, which arranges an arc extinguish chamber cavity on the upper part of a rotating shaft and a mechanism cavity by adjusting the internal layout structure of the molded case circuit breaker, and fully utilizes the space to accommodate more arc extinguish chambers; the arc extinguishing chamber cavity is arranged to be an independent cavity which is relatively separated from other cavities, so that the possibility that arc particles are attached to the operating mechanism in a back blowing mode is reduced. Meanwhile, each functional component inside the molded case circuit breaker can be installed in a modularized mode through adjustment of the internal layout structure of the molded case circuit breaker, and only the corresponding failed part needs to be detached when the molded case circuit breaker is installed or maintained, the whole unrelated functional component does not need to be detached, and assembly and maintenance difficulty of the molded case circuit breaker is greatly reduced.

Drawings

FIG. 1 is a schematic diagram illustrating a positional relationship between a cover, a base, and a base in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a spatial one and a spatial two-position relationship in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first space and a second space according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of the layout structure of each device in the first space in the embodiment of the present invention;

FIG. 5 is a schematic diagram of the layout structure of the internal devices in the embodiment of the present invention;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Examples

The embodiment of the utility model provides a moulded case circuit breaker's layout structure, as shown in figure 1, it includes well lid 1, base 2 and base 3, well lid 1 and base 2 are in the same place in the direction from top to bottom, base 2 and base 3 are in the same place in the direction from top to bottom, as shown in figure 2, the inside of well lid 1 and base 2 after assembling together is equipped with space an, the inside of base 2 and base 3 after assembling together each other is equipped with space two b, and mechanism 10 and pivot 4 set up in the space an, explosion chamber 5 and release 7 set up in the space two b.

In further detail, the space a comprises a left chamber a1 and a right chamber a2, and a relative isolation rib part a3 is arranged between the left chamber a1 and the right chamber a 2. As shown in fig. 4 and 5, the mechanism 10 is disposed in the left chamber a1, the rotating shaft 4 is disposed in the right chamber a2, the arc extinguishing chamber 5 is disposed in the space two b on the right side of the space two b, the mounting end 601 of the movable contact 6 is connected to the rotating shaft 4, and the trip 7 is disposed in the left chamber a1 on the left side of the mechanism 10. The loop structure 8 is located in the space two b, and the arc extinguishing chamber 5 and the fixed contact 9 are located in the space two b and surrounded by the loop structure 8. This structure guarantees that the explosion chamber occupies 2 lower part spaces of base completely, and under the condition that does not increase the whole external dimension of product, the quantity that the explosion chamber bars piece was arranged is far more than current moulded case circuit breaker on the market, realizes the maximize with the capacity of explosion chamber, promotes its breaking capacity under the high voltage level is used, can elongate electric arc simultaneously and evenly get into the explosion chamber for the transfer rate of electric arc.

And the second space b is provided with an air outlet channel b01 communicated with the outside. The contact end 602 of the movable contact 6 and the fixed contact 9 are arranged at the upper part of the space two b. And a space is arranged between the right chamber a2 and the space two b and is communicated with each other, the space is only used for the movement of the movable contact 6, and by adopting the structure, a larger channel for gas leakage does not exist, so that the possibility of back-spraying of a large number of charged particles is avoided in the breaking process.

The embodiment of the utility model provides a layout structure of a molded case circuit breaker, through the adjustment to the internal layout structure of the molded case circuit breaker, the arc extinguish chamber cavity is arranged on the upper part of the rotating shaft and the mechanism cavity, and the space is fully utilized to accommodate more arc extinguish chambers; the arc extinguishing chamber cavity is arranged to be an independent cavity which is relatively separated from other cavities, so that the possibility that arc particles are attached to the operating mechanism in a back blowing mode is reduced. Meanwhile, each functional component inside the molded case circuit breaker can be installed in a modularized mode through adjustment of the internal layout structure of the molded case circuit breaker, and only the corresponding failed part needs to be detached when the molded case circuit breaker is installed or maintained, the whole unrelated functional component does not need to be detached, and assembly and maintenance difficulty of the molded case circuit breaker is greatly reduced.

The embodiment of the utility model provides a still provide a circuit breaker of N level structure, 2 be less than or equal to N be less than or equal to 4, including N above-mentioned moulded case circuit breaker layout structure, moulded case circuit breaker layout structure arranges side by side, has reduced the moulded case circuit breaker installation and the maintenance degree of difficulty.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The structure, proportion, size, quantity, etc. shown in the attached drawings of the embodiment of the present invention are only used for matching with the contents disclosed in the specification, so as to be known and read by people familiar with the art, not for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and the modification of any structure, the change of proportion relation or the adjustment of size should still fall within the range that the technical contents can be covered without affecting the function that the present invention can produce and the purpose that can be achieved. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", "clockwise", "counterclockwise", etc. used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered to be the scope of the present invention without substantial changes in the technical content.

Claims (8)

1. The utility model provides a moulded case circuit breaker's layout structure, it includes well lid (1), base (2) and base (3), its characterized in that: well lid (1) and base (2) are assembled together in upper and lower direction each other, base (2) and base (3) are assembled together in upper and lower direction each other, the inside behind well lid (1) and base (2) assembly together is equipped with space (a), the inside behind base (2) and base (3) assembly together is equipped with space two (b), mechanism (10) and pivot (4) set up in space one (a), explosion chamber (5) and release (7) set up in space two (b).

2. The layout structure of a molded case circuit breaker according to claim 1, wherein: the loop structure (8) is located in the second space (b), and the arc extinguish chamber (5) and the static contact (9) are located in the second space (b) and are surrounded by the loop structure (8).

3. The layout structure of a molded case circuit breaker according to claim 1, wherein: the first space (a) comprises a left chamber (a1) and a right chamber (a2), a mechanism (10) is arranged in the left chamber (a1), a rotating shaft (4) is arranged in the right chamber (a2), an arc extinguishing chamber (5) is arranged in the second space (b) and is located on the right side of the second space (b), a mounting end (601) of a movable contact (6) is connected with the rotating shaft (4), and a release (7) is arranged in the left chamber (a1) and is located on the left side of the mechanism (10).

4. The layout structure of a molded case circuit breaker according to claim 1, wherein the second space (b) is provided with an air outlet passage (b01) communicating with the outside.

5. The layout structure of the molded case circuit breaker according to claim 3, wherein the contact position of the contact end (602) of the movable contact (6) and the stationary contact (9) is disposed at the upper portion of the second space (b).

6. The layout structure of the molded case circuit breaker of claim 3, wherein the left chamber (a1) and the right chamber (a2) have opposite isolating ribs (a3) therebetween.

7. The layout structure of the molded case circuit breaker as claimed in claim 3, wherein a space for the movable contact (6) to move is provided between the right chamber (a2) and the second space (b).

8. A circuit breaker with an N-level structure, wherein N is more than or equal to 2 and less than or equal to 4, the circuit breaker is characterized by comprising N layout structures as claimed in any one of the claims 1 to 7, and the layout structures are arranged side by side.

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