CN212462541U

CN212462541U - Low-voltage switch cabinet

Info

Publication number: CN212462541U
Application number: CN202020931582.6U
Authority: CN
Inventors: 周旭锋; 刘怀章; 林波; 杨荣娇; 陈代仙
Original assignee: Sichuan Wankong Electric Complete Co ltd
Current assignee: Sichuan Wankong Electric Complete Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-02-02
Anticipated expiration: 2030-05-28

Abstract

The utility model provides a low-voltage switch cabinet, which comprises a cabinet body and a cabinet door, wherein an electric heating block is arranged in the cabinet body; the back of the cabinet body is also provided with a heat exchange cavity, a semiconductor refrigeration pipe is arranged in the heat exchange cavity, a temperature sensor is arranged in the cabinet body, the rotating frame is fixed with the pointer shaft, the upper part of the rotating frame is provided with an upper contact head, and the lower part of the rotating frame is provided with a lower contact head; the back of calibrated scale still is provided with first circuit and second circuit, establish ties on the first circuit have first normally-open switch with electric heating block, establish ties on the second circuit have second normally-open switch, fan and semiconductor refrigeration pipe, and when last contact and first normally-open switch contact, first circuit formed the route, contact and second normally-open switch contact, second circuit formed the route when the contact. The utility model discloses can the internal temperature of intelligent regulation cabinet, make the temperature maintain at safe within range.

Description

Low-voltage switch cabinet

Technical Field

The utility model relates to a regulator cubicle technical field especially relates to a low-voltage switchgear.

Background

A plurality of electrical elements are arranged in the switch cabinet, faults can be caused by too high air temperature and too low air temperature, the common switch cabinet adopts a heat dissipation hole for heat dissipation, heating measures are not set, however, for some regions with extreme climate, in order to ensure the normal work of the switch cabinet, a temperature control facility needs to be additionally arranged, and the current low-voltage switch cabinet is lack of an intelligent temperature control facility.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, utility model provides a novel low-voltage switchgear, its problem of having solved the low-voltage switchgear that exists and lack intelligent temperature control facility among the prior art.

According to an embodiment of the utility model, a low-voltage switch cabinet comprises a cabinet body and a cabinet door, wherein an electric heating block is arranged in the cabinet body; the cabinet body is characterized in that a heat exchange cavity is further arranged at the back of the cabinet body, a first partition plate and a second partition plate are arranged in the heat exchange cavity, and the heat exchange cavity is divided into a first chamber, a second chamber and a third chamber which are arranged from near to far away from the cabinet body by the first partition plate and the second partition plate; the rear wall of the cabinet body is provided with a cold air main inlet, the cold air main inlet is used for communicating the first chamber with the interior of the cabinet body, a semiconductor refrigeration pipe is arranged in the second chamber, an opening at one end of the semiconductor refrigeration pipe is connected with the first partition plate, an opening at the other end of the semiconductor refrigeration pipe is connected with the second partition plate, the second partition plate is provided with an air inlet, the first partition plate is provided with an air outlet, the air inlet is used for communicating the third chamber with the inner cavity of the semiconductor refrigeration pipe, and the air outlet is used for communicating the first chamber with the inner cavity of the semiconductor refrigeration pipe; the heat exchange cavity is also provided with an air inlet pipe and an airflow main outlet, the air inlet pipe is used for communicating the third cavity with the external atmosphere, a fan is arranged in the air inlet pipe, and the airflow main outlet is used for communicating the second cavity with the external atmosphere; the exhaust pipe is used for communicating the second chamber with the interior of the cabinet body; a temperature sensor is arranged in the cabinet body and comprises a temperature probe, a dial, a pointer and a pointer shaft, a rotating frame is arranged on the back surface of the dial and fixed with the pointer shaft, an upper contact head is arranged at the upper part of the rotating frame, and a lower contact head is arranged at the lower part of the rotating frame; the back of calibrated scale still is provided with first circuit and second circuit, establish ties on the first circuit have first normally-open switch with electric heating block, establish ties on the second circuit have second normally-open switch the fan with semiconductor refrigeration pipe works as go up the contact with first normally-open switch contact first circuit forms the route, works as lower contact with second normally-open switch contact second circuit forms the route.

The technical principle of the utility model is that:

the change of the temperature measured by the temperature probe can cause the pointer shaft to rotate through conversion, so as to drive the pointer to rotate, and the temperature measured by the temperature probe is indicated through the pointer, which is the prior art of the temperature sensor, and the principle of the temperature sensor is not further explained. The dial plate is provided with an upper temperature limit and a lower temperature limit, when the pointer rotates to the upper temperature limit, the lower contact contacts with the second normally-off switch, the second circuit forms a passage, the fan and the semiconductor refrigeration pipe are electrified to start working, external air enters the cabinet body for cooling after being cooled by the inner wall of the semiconductor refrigeration pipe, and hot air flows through the outer wall of the semiconductor refrigeration pipe to take away heat and is discharged to the atmosphere; when the pointer is rotated to the lower temperature limit, the upper contact head is contacted with the first normally-off switch, the first circuit forms a passage, and the electric heating block starts to work, so that the temperature in the cabinet body rises.

The semiconductor refrigeration pipe is in the prior art, and the basic principle is that a semiconductor refrigeration piece can form a cold surface on one surface and a hot surface on the other surface in a power-on state, so that the effect of refrigeration on the cold surface is achieved, the semiconductor refrigeration piece is made into a tubular shape, the inner wall of the semiconductor refrigeration piece is made into the cold surface, and the outer wall of the semiconductor refrigeration piece is made into the semiconductor refrigeration pipe.

Compared with the prior art, the utility model has the following beneficial effects:

the temperature in the cabinet body can be intelligently adjusted, so that the temperature is maintained in a safe range. The temperature is measured through the temperature probe, and when the temperature reaches the set upper temperature limit or lower temperature limit, the second circuit forms a passage or the first circuit forms a passage, so that the fan and the semiconductor refrigerating pipe work or the electric heating block work, and the temperature in the cabinet body is always ensured to be automatically maintained between the upper temperature limit and the lower temperature limit.

Drawings

Fig. 1 is an external structure view of a low-voltage switchgear according to an embodiment of the present invention.

Fig. 2 is a sectional structure diagram of a low-voltage switchgear according to an embodiment of the present invention.

Fig. 3 is a schematic front structural view of a temperature sensor according to an embodiment of the present invention.

Fig. 4 is a schematic back structural view of the temperature sensor according to the embodiment of the present invention.

Fig. 5 is a schematic view of a semiconductor refrigeration tube.

In the above drawings: 1. a cabinet body; 2. a cabinet door; 3. a temperature sensor; 4. an electrical heating block; 5. mounting a plate; 6. a heat exchange cavity; 7. an exhaust pipe; 8. a first separator; 9. a second separator; 10. an air inlet pipe; 11. filtering with a screen; 12. a fan; 13. A semiconductor refrigeration tube; 14. an air outlet; 15. an air inlet; 16. a cold air main inlet; 17. a main gas flow outlet; 21. an observation window; 32. a pointer; 33. a pointer shaft; 34. a temperature probe; 35. a rotating frame; 351. an upper contact; 352. a lower contact; 50. a first chamber; 60. a second chamber; 70. a third chamber; 100. a first circuit; 101. a first normally-off switch; 200. a second circuit; 201. a second normally-off switch.

Detailed Description

The technical solution of the utility model is further explained with reference to the drawings and the embodiments.

As shown in fig. 1-2, an embodiment of the utility model provides a low-voltage switch cabinet, which comprises a cabinet body 1 and a cabinet door 2, wherein the bottom of the cabinet body 1 is provided with an electric heating block 4, the back of the cabinet body 1 is connected with a heat exchange cavity 6, the heat exchange cavity 6 is internally provided with a first baffle 8 and a second baffle 9, the heat exchange cavity 6 is divided into a first chamber 50, a second chamber 60 and a third chamber 70 by the first baffle 8 and the second baffle 9, the rear wall of the cabinet body 1 is provided with a cold air main inlet 16, the cold air main inlet 16 connects the first chamber 50 and the cabinet body 1, the second chamber 60 is internally provided with 3 semiconductor cooling tubes 13, one end opening of each semiconductor cooling tube 13 is connected with the first baffle 8, the other end opening of each semiconductor cooling tube 13 is connected with the second baffle 9, the second baffle 9 is provided with an air inlet 15, the first baffle 8 is provided with an air outlet 14, the air inlet 15 connects the third chamber 70 with the inner cavity of, the gas outlet 14 communicates the first chamber 50 with the inner cavity of the semiconductor refrigeration tube 13.

As shown in fig. 2, the heat exchange cavity 6 is further provided with an air inlet pipe 10 and a main airflow outlet 17, and the main airflow outlet 17 is arranged at the bottom of the heat exchange cavity 6 to prevent rainwater from entering the cavity. The air inlet pipe 10 connects the third chamber 70 with the outside atmosphere, the air blower 12 is disposed in the air inlet pipe 10, the air blower 12 provides power to enable the outside atmosphere to enter the third chamber 70, and the air flow main outlet 17 connects the second chamber 60 with the outside atmosphere. The exhaust pipe 7 communicates the second chamber 60 with the inside of the cabinet 1, the cold air inlet 16 is arranged at the lower part of the cabinet 1, and the exhaust pipe 7 is arranged at the upper part of the cabinet 1, so that the cold air enters from the lower part and leaves from the upper part, and a better cooling effect can be obtained. Be provided with observation window 21 on the cabinet door 2, still be provided with a plurality of mounting panels 5 in the cabinet body 1 to the installation electrical component, filter screen 11 has still been arranged in the intake pipe 10 entrance in order to block the foreign matter entering cavity.

As shown in fig. 1, 3, 4 and 5, the temperature sensor 3 is supported in the cabinet 1 by a support 31, the temperature sensor 3 includes a temperature probe 34, a dial, a pointer 32 and a pointer shaft 33, a rotating frame 35 is provided on the back of the dial, the rotating frame 35 is fixed with the pointer shaft 33, an upper contact 351 is provided on the upper portion of the rotating frame 35, and a lower contact 352 is provided on the lower portion of the rotating frame 35. The back of the dial is provided with a first circuit 100 and a second circuit 200, the first circuit 100 is connected with a first normally-off switch 101 and an electric heating block 4 in series, the second circuit 200 is connected with a second normally-off switch 201, a fan 12 and a semiconductor refrigerating pipe 13 in series, when the pointer 32 rotates to a lower temperature limit N, the upper contact 351 is in contact with the first normally-off switch 101 to form a passage in the first circuit 100, and when the pointer 32 rotates to an upper temperature limit M, the lower contact 352 is in contact with the second normally-off switch 201 to form a passage in the second circuit 200.

Finally, it is noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. A low-voltage switch cabinet comprises a cabinet body (1) and a cabinet door (2), and is characterized in that,

an electric heating block (4) is arranged in the cabinet body (1);

the back of the cabinet body (1) is also provided with a heat exchange cavity (6), a first partition plate (8) and a second partition plate (9) are arranged in the heat exchange cavity (6), and the heat exchange cavity (6) is divided into a first chamber (50), a second chamber (60) and a third chamber (70) which are arranged from near to far away from the cabinet body (1) by the first partition plate (8) and the second partition plate (9);

a main cold air inlet (16) is formed in the rear wall of the cabinet body (1), the first chamber (50) is communicated with the inside of the cabinet body (1) through the main cold air inlet (16), a semiconductor cooling pipe (13) is arranged in the second chamber (60), an opening at one end of the semiconductor cooling pipe (13) is connected with the first partition plate (8), an opening at the other end of the semiconductor cooling pipe (13) is connected with the second partition plate (9), an air inlet (15) is formed in the second partition plate (9), an air outlet (14) is formed in the first partition plate (8), the third chamber (70) is communicated with the inner cavity of the semiconductor cooling pipe (13) through the air inlet (15), and the first chamber (50) is communicated with the inner cavity of the semiconductor cooling pipe (13) through the air outlet (14);

the heat exchange cavity (6) is further provided with an air inlet pipe (10) and an air flow main outlet (17), the air inlet pipe (10) is used for communicating the third cavity (70) with the outside atmosphere, a fan (12) is arranged in the air inlet pipe (10), and the air flow main outlet (17) is used for communicating the second cavity (60) with the outside atmosphere;

the exhaust pipe (7) is further included, and the second chamber (60) is communicated with the interior of the cabinet body (1) through the exhaust pipe (7);

a temperature sensor (3) is arranged in the cabinet body (1), the temperature sensor (3) comprises a temperature probe (34), a dial, a pointer (32) and a pointer shaft (33), a rotating frame (35) is arranged on the back of the dial, the rotating frame (35) and the pointer shaft (33) are fixed together, an upper contact head (351) is arranged on the upper portion of the rotating frame (35), and a lower contact head (352) is arranged on the lower portion of the rotating frame (35);

the back of calibrated scale still is provided with first circuit (100) and second circuit (200), it has first normally-open switch (101) and electric heating block (4) to establish ties on first circuit (100), it has second normally-open switch (201) to establish ties on second circuit (200), fan (12) and semiconductor refrigeration pipe (13), works as last contact (351) with first normally-open switch (101) contact, first circuit (100) form the route, works as lower contact (352) with second normally-open switch (201) contact, second circuit (200) form the route.

2. A low-voltage switchgear cabinet, according to claim 1, characterized in that said cabinet door (2) is provided with a viewing window (21).

3. The low-voltage switchgear cabinet according to claim 1, characterized in that a plurality of mounting plates (5) are further arranged in the cabinet body (1).

4. Low-voltage switchgear cabinet according to claim 1, characterized in that said cold air inlet (16) is arranged at the lower part of said cabinet (1) and said exhaust duct (7) is arranged at the upper part of said cabinet (1).

5. A low-voltage switchgear cabinet, according to claim 1, characterized in that said main air flow outlet (17) is arranged at the bottom of said heat exchange chamber (6).

6. Low-voltage switchgear cabinet according to any of claims 1 to 5, characterized in that a sieve (11) is arranged at the inlet of the inlet duct (10).