CN212570890U - Protection device for conductive system of molded case circuit breaker - Google Patents

Abstract

The utility model discloses a protection device for a conductive system of a molded case circuit breaker, which comprises an upper shell and a lower shell, wherein a blower box and an exhaust fan box are respectively arranged at two sides inside the lower shell, a blower is arranged inside the blower box, a blowing motor is arranged at one side of the blower, the blowing motor is electrically connected with the blower, an exhaust fan is arranged inside the exhaust fan box, an exhaust motor is arranged at one side of the exhaust fan, the exhaust motor is electrically connected with the exhaust fan, the utility model discloses a heat dissipation treatment is conveniently carried out on the molded case circuit breaker in the conductive state by respectively arranging the blower and the exhaust fan at two sides of the lower shell, thereby preventing internal elements from being damaged due to overhigh temperature, and the ventilation openings are arranged at two sides of the lower shell, so that the air inside and outside the molded case circuit breaker can be conveniently circulated, make the radiating effect better, through being provided with the switch in last shell outside, conveniently cut off the power supply and the circular telegram through manual.

Description

Protection device for conductive system of molded case circuit breaker

Technical Field

The utility model relates to a moulded case circuit breaker technical field specifically is a moulded case circuit breaker's electrically conductive system protection device.

Background

The molded case circuit breaker can automatically cut off the current after the current exceeds the trip setting. Plastic housing refers to the use of plastic insulators as the outer housing of the device to isolate the conductors from each other and from the grounded metal parts. Molded case circuit breakers typically contain a thermo-magnetic trip unit, while large molded case circuit breakers are equipped with a solid state trip sensor. The tripping unit comprises: thermomagnetic trip and electronic trip.

The conventional molded case circuit breaker may not have a self-protection device, and the internal operation components may not be powered off in time when power needs to be off due to an excessively high temperature under the condition that the molded case circuit breaker is internally conductive.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a moulded case circuit breaker's electrically conductive system protection device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a protection device for a conductive system of a molded case circuit breaker comprises an upper shell and a lower shell, wherein the surface of the upper shell is respectively provided with an upper shell fixing hole and an upper fixing hole, the inner part of the lower shell is provided with a lower shell fixing column, the upper shell and the lower shell are mutually and fixedly connected through the upper shell fixing hole, the lower shell fixing column and upper and lower shell fixing screws, the inner parts of the upper fixing hole and the lower fixing hole are both in threaded connection with the shell fixing screws, two sides of the inner part of the lower shell are respectively provided with a blower box and an exhaust fan box, a blower is arranged in the blower box, one side of the blower is provided with a blowing motor, the blowing motor is electrically connected with the blower, the exhaust fan is arranged in the blower box, and one side of the exhaust fan is provided with an exhaust motor, the air draft motor is electrically connected with the air draft fan.

As a further aspect of the present invention: a switch groove is formed in the middle of the outer side of the upper shell, and a switch is arranged inside the switch groove.

As a further aspect of the present invention: a plurality of ventilation openings are formed in the two sides of the lower shell.

As a further aspect of the present invention: and filter screens are arranged on one sides of the blower box and the suction fan box.

As a further aspect of the present invention: and the middle position in the lower shell is respectively provided with a grounding wire slot and a wire slot.

As a further aspect of the present invention: and an insulating baffle is arranged between the grounding wire slot and the wire slot.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a be provided with hair-dryer and air exhauster respectively in lower shell both sides, conveniently carry out the heat dissipation treatment to the moulded case circuit breaker in electrically conducting, prevent that the high temperature from leading to inside component damage, through all seted up a plurality of vent in lower shell both sides, conveniently make the inside and outside air of moulded case circuit breaker form the circulation, make the radiating effect better, through be provided with the switch slot in the upper shell outside, the inslot is provided with the switch, conveniently cuts off the power supply through manual;

2. the utility model discloses a through set up upper casing fixed orifices and upper fixed orifices respectively on the upper casing surface, through upper and lower casing fixed screw fixed connection between the lower casing fixed column that sets up on upper casing fixed orifices and the lower casing, convenient mutual fixation between the upper and lower casing, through casing fixed screw and wall body mutual fixed connection between upper fixed orifices and the lower fixed orifices, conveniently fix the whole device on the wall that needs to use the moulded case circuit breaker of installing the electric wire;

3. the utility model discloses an all be provided with the filter screen at hair-dryer case and air exhauster case top surface, prevent that air exhauster or hair-dryer from inhaling inside the moulded case circuit breaker with impurity such as outside dust, pollute inside part and damage even, lead to moulded case circuit breaker unable use, through having seted up ground connection wire casing and metallic channel respectively in the shell bottom down, conveniently install wire and earth connection at the inslot, through be provided with insulating baffle between ground connection wire casing and metallic channel, can effectually prevent interconnect between earth connection wire and the wire, lead to the circuit to damage.

Drawings

Fig. 1 is a perspective view of a conductive system protection device of a molded case circuit breaker;

fig. 2 is a side view of a conductive system protection device of the molded case circuit breaker;

fig. 3 is a schematic structural view of a lower case in the conductive system protection apparatus of the molded case circuit breaker;

fig. 4 is an enlarged schematic structural view of a conductive system protection device of a molded case circuit breaker at a.

In the figure: 1. an upper housing; 2. a switch slot; 3. a switch; 4. an upper housing fixing hole; 5. an upper fixing hole; 6. a lower housing; 7. a vent; 8. a blower; 9. a blower motor; 10. a blower box; 11. an exhaust fan; 12. an air draft motor; 13. an air extractor box; 14. a filter screen; 15. a lower housing fixing column; 16. a lower fixing hole; 17. the upper and lower shells are fixed with screws; 18. a housing fixing screw; 19. a ground wire slot; 20. a wire guide groove; 21. an insulating barrier.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in an embodiment of the present invention, a protection device for a conductive system of a molded case circuit breaker includes an upper case 1 and a lower case 6, wherein an upper case fixing hole 4 and an upper fixing hole 5 are respectively formed on a surface of the upper case 1, a lower fixing hole 16 is formed in the lower case 6, a lower case fixing post 15 is formed in the lower case 6, the upper case 1 and the lower case 6 are fixedly connected to each other through an upper case fixing hole 4, a lower case fixing post 15, and upper and lower case fixing screws 17, so as to facilitate mutual fixing between the upper and lower cases, case fixing screws 18 are threadedly connected to both inside the upper fixing hole 5 and the lower fixing hole 16, so as to facilitate fixing the entire molded case circuit breaker to a wall, a blower case 10 and an exhaust fan case 13 are respectively disposed on both sides inside the lower case 6, a blower 8 is disposed inside the blower case 10, and a blower, electric connection between blower motor 9 and the hair-dryer 8, the inside air exhauster 11 that is provided with of air exhauster case 13, air exhauster 11 one side is provided with air draft motor 12, and electric connection between air draft motor 12 and the air exhauster 11, under the circumstances of moulded case circuit breaker circular telegram, the convenient component to moulded case circuit breaker inside carries out the heat dissipation and handles, prevents that the too high problem that leads to the emergence circuit to damage of inside component temperature.

Preferably, go up 1 outside intermediate position of shell and seted up switch slot 2, switch slot 2 is inside to be provided with switch 3, makes things convenient for the manual switch that opens.

Preferably, a plurality of ventilation openings 7 are formed in both sides of the lower shell 6, so that air inside and outside the molded case circuit breaker is circulated, and the heat dissipation effect is better.

Preferably, a filter screen 14 is disposed on one side of each of the blower case 10 and the exhaust fan case 13 to prevent external impurities such as dust from entering the inside of the molded case circuit breaker through the vent 7, and thus, the internal components are damaged and the molded case circuit breaker cannot be used.

Preferably, the lower housing 6 is provided with a ground wire slot 19 and a wire slot 20 at the middle position inside thereof, so that the wires and the ground wires can be conveniently installed inside the wire slot 20 and the ground wire slot 19.

Preferably, an insulating baffle 21 is arranged between the grounding wire slot 19 and the wire slot 20, so that the danger that the grounding wire and the wire are mutually wound to cause circuit damage can be effectively prevented.

The utility model discloses a theory of operation is:

when the device is used, firstly, a lead and a grounding wire are arranged in a lead groove 20 and a grounding wire groove 19 which are arranged in a lower shell 6, an insulating baffle 21 arranged between the lead groove 20 and the grounding wire groove 19 can effectively prevent the grounding wire and the lead from being intertwined to cause the problem of circuit damage, then, an upper shell 1 and the lower shell 6 are fixedly connected with each other through an upper shell fixing hole 4, a lower shell fixing column 15 and upper and lower shell fixing screws 17, then, the whole molded case circuit breaker is fixed on a wall surface needing to be installed through the upper fixing hole 5, the lower fixing hole 16 and shell fixing screws 18, after the molded case circuit breaker is electrified, a blower 8 and an exhaust fan 11 which are arranged in the molded case circuit breaker start to operate, the temperature reduction and heat dissipation treatment are carried out on elements in the molded case circuit breaker, and the air in the molded case circuit breaker and the air outside are convenient to circulate through a plurality of ventilation, the heat dissipation effect is better, when the circuit is short-circuited or other problems occur, the switch 3 can automatically close the electric brake to prevent fire, and then a user can open the electric brake again by pressing the switch 3.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (6)

1. The utility model provides a moulded case circuit breaker's electrically conductive system protection device, includes shell (1) and lower shell (6), its characterized in that: the surface of the upper shell (1) is respectively provided with an upper shell fixing hole (4) and an upper fixing hole (5), the inner part of the lower shell (6) is provided with a lower fixing hole (16), the inner part of the lower shell (6) is provided with a lower shell fixing column (15), the upper shell (1) and the lower shell (6) are mutually and fixedly connected through the upper shell fixing hole (4), the lower shell fixing column (15) and upper and lower shell fixing screws (17), the inner parts of the upper fixing hole (5) and the lower fixing hole (16) are both in threaded connection with the shell fixing screws (18), two sides of the inner part of the lower shell (6) are respectively provided with a blower box (10) and an exhaust fan box (13), a blower (8) is arranged in the blower box (10), a blower motor (9) is arranged on one side of the blower (8), and the blower motor (9) is electrically connected with the blower (8), an exhaust fan (11) is arranged inside the exhaust fan box (13), an exhaust motor (12) is arranged on one side of the exhaust fan (11), and the exhaust motor (12) is electrically connected with the exhaust fan (11).

2. The protection device for the conductive system of the molded case circuit breaker according to claim 1, wherein: go up shell (1) outside intermediate position and seted up switch groove (2), switch groove (2) inside is provided with switch (3).

3. The protection device for the conductive system of the molded case circuit breaker according to claim 1, wherein: a plurality of ventilation openings (7) are formed in the two sides of the lower shell (6).

4. The protection device for the conductive system of the molded case circuit breaker according to claim 1, wherein: and filter screens (14) are arranged on one sides of the blower box (10) and the suction fan box (13).

5. The protection device for the conductive system of the molded case circuit breaker according to claim 1, wherein: and the middle position in the lower shell (6) is respectively provided with a grounding wire slot (19) and a wire slot (20).

6. The protection device for the conductive system of the molded case circuit breaker according to claim 5, wherein: an insulating baffle plate (21) is arranged between the grounding wire slot (19) and the wire slot (20).

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