Low-voltage cabinet protection structure for transformer substation

Abstract

The invention discloses a low-voltage cabinet protection structure for a transformer substation, and relates to the technical field of low-voltage cabinets, the low-voltage cabinet protection structure for the transformer substation comprises a cabinet body and two threaded rods rotationally connected to the cabinet body, the threaded rods are in threaded fit with a mounting plate and a fire extinguishing mechanism, and the fire extinguishing mechanism is arranged on the mounting plate and the cabinet body. When a fire occurs in the low-voltage cabinet, a starting mechanism is triggered through the fire, then the starting mechanism starts to control a first motor to work, and the first motor drives a mounting plate and a fire extinguishing mechanism to quickly move through a threaded rod, so that the fire extinguishing mechanism accurately and quickly moves to the fire position; and then the fire extinguishing device sprays a large amount of carbon dioxide gas to the fire position to accurately extinguish the fire at the fire position, so that the fire extinguishing effect in the low-voltage cabinet is greatly improved, the fire is controlled in time, the damage degree of components in the low-voltage cabinet is reduced, and the protection effect on the low-voltage cabinet is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage cabinets, and particularly relates to a protection structure for a low-voltage cabinet used in a substation. Background Art

[0002] The rated current of the low-voltage power distribution cabinet in the substation is 50Hz alternating current, and the rated voltage is 380v. The power distribution system is used for power conversion and control of power, lighting and power distribution. This product has the characteristics of strong breaking ability, good dynamic and thermal stability, flexible electrical schemes, convenient combination, strong series and practicability, and novel structure.

[0003] At present, when the low-voltage power distribution cabinet used in the substation is in use, due to the simple structure of the low-voltage cabinet, when the components in the low-voltage power distribution cabinet are overloaded and burned out, a fire will occur inside the low-voltage power distribution cabinet. When this fire occurs, it is impossible to extinguish the fire in the low-voltage power distribution cabinet in time, and the protection of the internal components is poor, resulting in the fire burning other components in the low-voltage power distribution cabinet or causing a serious fire, thus causing greater losses. Summary of the Invention

[0004] The purpose of the present invention is to provide a protection structure for a low-voltage cabinet used in a substation to solve the deficiencies in the above background art.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A protection structure for a low-voltage cabinet used in a substation includes a cabinet body and two threaded rods rotatably connected to the cabinet body. The two threaded rods are connected by a transmission wheel and a transmission belt. One end of one of the threaded rods is fixedly connected to a first motor fixedly connected to the cabinet body through a coupling, and an installation plate is in threaded cooperation with the threaded rod;

[0007] A fire extinguishing mechanism, which is arranged on the installation plate and the cabinet body, and is used for extinguishing the fire source in the cabinet body;

[0008] A ventilation and heat dissipation mechanism, which is arranged on the cabinet body and is used for supplying air to the inside of the cabinet body.

[0009] As a further solution of the present invention: The fire extinguishing mechanism includes a first installation pipe fixedly connected to the installation plate. A fire extinguishing cover is fixedly connected to the first installation pipe. A plurality of first plastic hoses are fixedly connected to the first installation pipe through threaded pipes. A first spring is fixedly connected inside the cabinet. The top end of the first spring is fixedly connected to a first transmission plate. A first airbag connected to the cabinet is arranged below the first transmission plate. A first hose fixedly connected to the first installation pipe is fixedly connected to the outer surface of the first airbag. A first control switch is fixedly connected to the cabinet. A carbon dioxide gas cylinder is fixedly connected to the cabinet. The output end of the carbon dioxide gas cylinder is fixedly connected to a second hose fixedly connected to the first installation pipe. An electromagnetic valve is arranged on the second hose;

[0010] A starting mechanism for controlling the operation of the first motor is arranged on the cabinet. The starting mechanism is used to timely detect a fire inside the cabinet and control the first motor to operate.

[0011] As a further solution of the present invention: The starting mechanism includes an installation box fixedly connected to the cabinet. A second airbag is fixedly connected inside the installation box. The output end of the second airbag is fixedly connected to a second installation pipe. A plurality of second plastic hoses are fixedly connected to the outer surface of the second installation pipe through threaded pipes. A pressing plate is slidably connected inside the installation box. The bottom of the pressing plate is fixedly connected to a second spring fixedly connected to the installation box. A second control switch is fixedly connected inside the installation box.

[0012] As a further solution of the present invention: First ventilation holes are opened at both the top and bottom of the cabinet. A transmission column slidably connected to the cabinet is fixedly connected to the top of the first transmission plate. The top end of the transmission column is fixedly connected to a second transmission plate. Sealing columns slidably connected to the first ventilation holes are fixedly connected to the bottoms of the first transmission plate and the second transmission plate. A third spring fixedly connected to the cabinet is fixedly connected to the bottom of the second transmission plate. Second ventilation holes are opened on both the first transmission plate and the second transmission plate.

[0013] As a further solution of the present invention: The ventilation and heat dissipation mechanism includes an air inlet cover fixedly connected to the cabinet. A first air inlet pipe is fixedly connected to the bottom of the air inlet cover. One end of the first air inlet pipe is fixedly connected to a dehumidification box fixedly connected to the cabinet. A second air inlet pipe is fixedly connected to the top of the dehumidification box. One end of the second air inlet pipe is fixedly connected to an air inlet box fixedly connected to the cabinet. A second motor is fixedly connected to the air inlet box. The output end of the second motor is fixedly connected to a first transmission shaft through a coupling. A fan blade is fixedly connected to the outer surface of the first transmission shaft. A first filter screen plate rotatably connected to the first transmission shaft is fixedly connected inside the air inlet box;

[0014] A drying interference mechanism connected to the dehumidification box is drivingly connected to the outer surface of the first transmission shaft, and the drying interference mechanism is used to dry the desiccant in the dehumidification box.

[0015] As a further aspect of the present invention: The drying interference mechanism includes a second transmission shaft rotatably connected to the dehumidification box. The first transmission shaft and the second transmission shaft are drivingly connected by a transmission wheel and a transmission belt. A first gear is fixedly sleeved on the outer surface of the second transmission shaft. A second gear is meshingly connected to the outer surface of the first gear. A third transmission shaft rotatably connected to the dehumidification box is fixedly sleeved in the middle of the second gear. A plurality of stirring rods are fixedly connected to the outer surface of the third transmission shaft. A plurality of electric heating plates are fixedly connected in the dehumidification box. A heat dissipation hole is opened at the top of the dehumidification box.

[0016] As a further aspect of the present invention: A cleaning brush fixedly connected to the outer surface of the first transmission shaft is slidably connected to the first filter plate.

[0017] As a further aspect of the present invention: A filter net is fixedly connected to one end of the first air inlet pipe.

[0018] As a further aspect of the present invention: A shielding plate is fixedly connected to the top of the cabinet body.

[0019] As a further aspect of the present invention: An exhaust pipe is fixedly connected to the top of the cabinet body, and an electromagnetic valve is provided on the exhaust pipe.

[0020] The beneficial effects of the present invention:

[0021] (1) When a fire breaks out in the low-voltage cabinet, at this time, the fire-triggering starting mechanism is triggered, and then the starting mechanism starts to control the first motor to work. The first motor drives the mounting plate and the fire extinguishing mechanism to move quickly through the threaded rod, so that the fire extinguishing mechanism moves accurately and quickly to the fire position. Subsequently, the fire extinguishing device sprays a large amount of carbon dioxide gas at the fire position to accurately extinguish the fire, greatly improving the fire extinguishing effect in the low-voltage cabinet, enabling the fire to be controlled in time, reducing the damage degree of the components in the low-voltage cabinet, and further improving the protection effect on the low-voltage cabinet.

[0022] (2) When a fire breaks out, at this time, the first transmission plate moves downward. The first transmission plate drives the second transmission plate to move downward through the transmission column, so that the sealing columns on the first transmission plate and the second transmission plate are inserted into the first ventilation holes, preventing air from entering the cabinet body and reducing the oxygen content in the cabinet body, thereby more quickly blocking the fire in the cabinet body and further improving the protection effect on the low-voltage cabinet.

[0023] (3) Filter the outside air through the ventilation and heat dissipation mechanism, then introduce the filtered air into the dehumidification box. Subsequently, use the silica gel desiccant in the dehumidification box to fully dry the moisture in the air, and then introduce it into the cabinet to dissipate heat in the cabinet, thereby realizing the dissipation of dry air in the cabinet, reducing the damage of moisture in the air to the components in the cabinet, and improving the heat dissipation effect of the low-voltage cabinet.

[0024] (4) Control the second motor to rotate slowly. At the same time, the electric heating plate in the dehumidification box is electrically heated. At the same time, the second motor drives the first transmission shaft to rotate slowly, the first transmission shaft drives the second transmission shaft to rotate, and the second transmission shaft drives the third transmission shaft and the stirring rod to rotate through the first gear and the second gear, so that the desiccant in the dehumidification box is fully heated and dried, and the dried moisture is discharged from the heat dissipation holes, thereby realizing the reuse of the desiccant in the dehumidification box. Description of the Drawings

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 is the first three-dimensional view of the external structure of the present invention;

[0027] Figure 2 is the second three-dimensional view of the external structure of the present invention;

[0028] Figure 3 is the third three-dimensional view of the external structure of the present invention;

[0029] Figure 4 is the front view of the internal structure of the installation box of the present invention;

[0030] Figure 5 is the front view of the internal structure of the dehumidification box and the air inlet box of the present invention;

[0031] Figure 6 is the present invention Figure 2 The enlarged view of A in;

[0032] Figure 7 is the present invention Figure 1 The enlarged view of B in;

[0033] Figure 8 is the present invention Figure 3 The enlarged view of C in.

[0034] In the figure: 1, cabinet; 2, threaded rod; 3, first motor; 4, mounting plate; 11, first mounting pipe; 12, fire extinguishing hood; 13, first plastic hose; 14, first spring; 15, first transmission plate; 16, first air bag; 17, first hose; 18, first control switch; 19, carbon dioxide gas tank; 190, second hose; 21, mounting box; 22, second air bag; 23, second mounting pipe; 24, second plastic hose; 25, pressure plate; 26, second spring; 27, second control switch; 31, first Ventilation hole; 32. Transmission column; 33. Second transmission plate; 34. Sealing column; 35. Third spring; 36. Second ventilation hole; 41. Air inlet cover; 42. First air inlet pipe; 43. Dehumidification box; 44. Second air inlet pipe; 45. Air inlet box; 46. Second motor; 47. First transmission shaft; 48. Fan blades; 49. First filter screen; 490. Cleaning brush; 51. Second transmission shaft; 52. First gear; 53. Second gear; 54. Third transmission shaft; 55. Stirring rod; 56. Electric heating plate; 57. Heat dissipation hole. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1

[0037] See also Figures 1 - 8 As shown, the present invention is a low-voltage cabinet protection structure for a transformer substation, comprising a cabinet 1 and two threaded rods 2 rotatably connected to the cabinet 1, the two threaded rods 2 being connected by a transmission wheel and a transmission belt, one end of one of the threaded rods 2 being fixedly connected to a first motor 3 fixedly connected to the cabinet 1 by a coupling, the first motor 3 being controlled by a PLC programming program, and the first motor 3 can be controlled. The threaded rods 2 are threadedly matched with a mounting plate 4, the mounting plate 4 is provided with a fire extinguishing mechanism connected to the cabinet 1, the fire extinguishing mechanism is used to extinguish a fire source in the cabinet 1, a ventilation and heat dissipation mechanism is provided in the cabinet 1, the ventilation and heat dissipation mechanism is used to supply air to the cabinet 1, a baffle is fixedly connected to the top of the cabinet 1, an exhaust pipe is provided on the top of the cabinet 1, and an electromagnetic valve is provided on the exhaust pipe.

[0038] The precise automatic monitoring by the fire extinguishing mechanism detects the location of the fire inside the low-voltage cabinet. Subsequently, the first motor 3 drives the threaded rod 2 to rotate, the threaded rod 2 drives the mounting plate 4 to move, and the mounting plate 4 drives the fire extinguishing mechanism to move to the location of the fire to extinguish it in a timely manner, greatly improving the accuracy of fire extinguishing inside the low-voltage cabinet and further enhancing the working safety of the low-voltage cabinet. At the same time, during daily use, the ventilation and heat dissipation mechanism supplies dry outside cold air into the low-voltage cabinet and filters the moisture in the outside air, further improving the heat dissipation effect of the low-voltage cabinet.

[0039] Embodiment 2

[0040] Based on Embodiment 1, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the fire extinguishing mechanism includes a first mounting pipe 11 fixedly connected to the mounting plate 4. A fire extinguishing cover 12 is fixedly connected to the first mounting pipe 11. A plurality of first plastic hoses 13 are fixedly connected to the first mounting pipe 11 through threaded pipes. A first spring 14 is fixedly connected inside the cabinet body 1. The top end of the first spring 14 is fixedly connected to a first transmission plate 15. A first airbag 16 connected to the cabinet body 1 is arranged below the first transmission plate 15. A first hose 17 fixedly connected to the first mounting pipe 11 is fixedly connected to the outer surface of the first airbag 16. A first control switch 18 is fixedly connected to the cabinet body 1. A carbon dioxide gas cylinder 19 is fixedly connected to the cabinet body 1. The output end of the carbon dioxide gas cylinder 19 is fixedly connected to a second hose 190 fixedly connected to the first mounting pipe 11. An electromagnetic valve is arranged on the second hose 190. A starting mechanism for controlling the operation of the first motor 3 is arranged on the cabinet body 1. The starting mechanism is used to promptly detect a fire inside the cabinet body 1 and control the first motor 3 to operate. The starting mechanism includes a mounting box 21 fixedly connected to the cabinet body 1. A second airbag 22 is fixedly connected inside the mounting box 21. The output end of the second airbag 22 is fixedly connected to a second mounting pipe 23. A plurality of second plastic hoses 24 are fixedly connected to the outer surface of the second mounting pipe 23 through threaded pipes. A pressing plate 25 is slidably connected inside the mounting box 21. The bottom of the pressing plate 25 is fixedly connected to a second spring 26 fixedly connected to the mounting box 21. A second control switch 27 is fixedly connected inside the mounting box 21.

[0041] When a fire breaks out inside the cabinet body 1, the burning flame at this time burns one of the multiple second plastic hoses 24 on the second installation pipe 23. At this time, the second plastic hose 24 is burned through, and at this time the second plastic hose 24 deflates. At this time, the second airbag 22 inside the installation box 21 begins to shrink. At this time, the pressing plate 25 inside the installation box 21 moves under the force of the second spring 26 and begins to squeeze the second control switch 27 inside the installation box 21. The second control switch 27 starts to be triggered. At this time, the second control switch 27 starts to control the first motor 3 to work. The first motor 3 drives the threaded rod 2 to rotate. The threaded rod 2 drives the installation plate 4 to quickly move upward. When the first plastic hose 13 on the first installation pipe 11 on the installation plate 4 moves to the fire location, at this time the first plastic hose 13 is melted by the fire. At this time, the first airbag 16 deflates and shrinks. At this time, the first transmission plate 15 moves downward under the force of the first spring 14. At the same time, the first transmission plate 15 starts to trigger the first control switch 18 on the cabinet body 1. The first control switch 18 shuts down the operation of the first motor 3, causing the installation plate 4 to stop moving. At this time, the fire extinguishing cover 12 on the first installation pipe 11 on the installation plate 4 moves to the fire location. At this time, the electromagnetic valve on the second hose 190 opens. The carbon dioxide gas in the carbon dioxide gas cylinder 19 enters the first installation pipe 11 through the second hose 190. Subsequently, a large amount of carbon dioxide gas is blown through the fire extinguishing cover 12 on the first installation pipe 11 to the fire location to accurately extinguish the fire, so that the fire is timely controlled and the damage degree of the components inside the low-voltage cabinet is reduced.

[0042] Embodiment III

[0043] On the basis of Embodiment II, please refer to Figure 1 Figure 2 and Figure 7 As shown, first ventilation holes 31 are opened at both the top and the bottom of the cabinet body 1. A transmission column 32 slidably connected to the cabinet body 1 is fixedly connected to the top of the first transmission plate 15. The top end of the transmission column 32 is fixedly connected to a second transmission plate 33. Sealing columns 34 slidably connected to the first ventilation holes 31 are fixedly connected to the bottoms of both the first transmission plate 15 and the second transmission plate 33. A third spring 35 fixedly connected to the cabinet body 1 is fixedly connected to the bottom of the second transmission plate 33. Second ventilation holes 36 are opened on both the first transmission plate 15 and the second transmission plate 33.

[0044] When a fire breaks out, after the mounting plate 4 moves to the fire location and the first airbag 16 deflates and shrinks, at this time, the first transmission plate 15 moves downward under the pulling force of the first spring 14. The first transmission plate 15 drives the second transmission plate 33 to move downward through the transmission column 32. The sealing columns 34 on the first transmission plate 15 and the second transmission plate 33 are inserted into the first ventilation holes 31 to close the first ventilation holes 31 at the top and bottom of the cabinet body 1, preventing air from entering the cabinet body 1, reducing the oxygen content in the cabinet body 1, thereby more quickly blocking the fire in the cabinet body 1 and further improving the protection effect on the cabinet body 1.

[0045] Embodiment 4

[0046] On the basis of Embodiment 3, please refer to Figure 2 , Figure 3 , Figure 5 and Figure 8 As shown, the ventilation and heat dissipation mechanism includes an air inlet hood 41 fixedly connected to the cabinet body 1. The bottom of the air inlet hood 41 is fixedly connected with a first air inlet pipe 42. One end of the first air inlet pipe 42 is fixedly connected with a filter screen. One end of the first air inlet pipe 42 is fixedly connected with a dehumidification box 43 fixedly connected to the cabinet body 1. The dehumidification box 43 is filled with silica gel desiccant. The top of the dehumidification box 43 is fixedly connected with a second air inlet pipe 44. One end of the second air inlet pipe 44 is fixedly connected with an air inlet box 45 fixedly connected to the cabinet body 1. A second motor 46 is fixedly connected to the air inlet box 45. The second motor 46 is controlled by a PLC programming program, which can control the forward and reverse rotation and rotation angle of the second motor 46. The output end of the second motor 46 is fixedly connected with a first transmission shaft 47 through a coupling. The outer surface of the first transmission shaft 47 is fixedly connected with a fan blade 48. A first filter screen plate 49 rotatably connected to the first transmission shaft 47 is fixedly connected inside the air inlet box 45. A cleaning brush 490 slidably connected to the first filter screen plate 49 is fixedly connected to the outer surface of the first transmission shaft 47;

[0047] The outer surface of the first transmission shaft 47 is drivingly connected with a drying interference mechanism connected to the dehumidification box 43, and the drying interference mechanism is used for drying the desiccant in the dehumidification box 43;

[0048] The drying interference mechanism includes a second transmission shaft 51 rotatably connected to the dehumidification box 43. The first transmission shaft 47 and the second transmission shaft 51 are drivingly connected through a transmission wheel and a transmission belt. A first gear 52 is fixedly sleeved on the outer surface of the second transmission shaft 51. The outer surface of the first gear 52 is meshed with a second gear 53. A third transmission shaft 54 rotatably connected to the dehumidification box 43 is fixedly sleeved in the middle of the second gear 53. A plurality of stirring rods 55 are fixedly connected to the outer surface of the third transmission shaft 54. A plurality of electric heating plates 56 are fixedly connected inside the dehumidification box 43. A heat dissipation hole 57 is opened at the top of the dehumidification box 43;

[0049] The second motor 46 drives the first transmission shaft 47 to rotate. The first transmission shaft 47 drives the fan blade 48 to rotate. The fan blade 48 blows air into the air inlet box 45. Then, the dust and debris in the air are filtered by the first filter plate 49. The filtered air enters the dehumidification box 43 through the second air inlet pipe 44. Subsequently, the moisture in the air is dried by the silica gel desiccant in the dehumidification box 43. During the drying process, the first transmission shaft 47 drives the second transmission shaft 51 to rotate. The second transmission shaft 51 drives the third transmission shaft 54 to rotate through the first gear 52 and the second gear 53. The third transmission shaft 54 drives the stirring rod 55 to rotate. The stirring rod 55 slowly stirs the silica gel desiccant in the dehumidification box 43, enabling the desiccant to come into full contact with the moisture in the air, greatly improving the air drying effect. The dried air evenly enters the air inlet hood 41 through the first air inlet pipe 42. Then, the air inlet hood 41 supplies the air into the cabinet 1 through the first ventilation holes 31. Subsequently, it enters the cabinet 1 through the second ventilation holes 36 on the first transmission plate 15 in the cabinet 1 to blow and dissipate heat from the components in the cabinet 1. The hot air after heat dissipation is discharged through the second ventilation holes 36 at the top of the cabinet 1, thereby realizing the heat dissipation of the dry air in the cabinet 1 and reducing the damage to the components in the cabinet 1 caused by the moisture in the air.

[0050] At the same time, after a certain period of time, the second motor 46 is controlled to rotate slowly. Meanwhile, the electric heating plate 56 in the dehumidification box 43 is electrically heated. At the same time, the second motor 46 drives the first transmission shaft 47 to rotate slowly. The first transmission shaft 47 drives the second transmission shaft 51 to rotate. The second transmission shaft 51 drives the third transmission shaft 54 and the stirring rod 55 to rotate through the first gear 52 and the second gear 53, enabling the desiccant in the dehumidification box 43 to be fully heated and dried. The dried moisture is discharged from the heat dissipation holes 57, thereby realizing the reuse of the desiccant in the dehumidification box 43.

[0051] Working principle of the present invention: When a fire breaks out inside the cabinet body 1, the flame of the burning fire reaches one of the plurality of second plastic hoses 24 on the second installation pipe 23. At this time, the second plastic hose 24 is burned through, and the second plastic hose 24 deflates. At this time, the second airbag 22 inside the installation box 21 begins to shrink. At this time, the pressing plate 25 inside the installation box 21 moves under the action of the force of the second spring 26 and begins to squeeze the second control switch 27 inside the installation box 21. The second control switch 27 is triggered. At this time, the second control switch 27 starts to control the first motor 3 to work. The first motor 3 drives the threaded rod 2 to rotate, and the threaded rod 2 drives the installation plate 4 to move rapidly upward. When the first plastic hose 13 on the first installation pipe 11 on the installation plate 4 moves to the fire location, at this time, the first plastic hose 13 is melted by the fire. At this time, the first airbag 16 deflates and shrinks. At this time, the first transmission plate 15 moves downward under the action of the force of the first spring 14. At the same time, the first transmission plate 15 starts to trigger the first control switch 18 on the cabinet body 1. The first control switch 18 shuts down the operation of the first motor 3, causing the installation plate 4 to stop moving. At this time, the fire extinguishing cover 12 on the first installation pipe 11 on the installation plate 4 moves to the fire location. At this time, the electromagnetic valve on the second hose 190 opens, and the carbon dioxide gas in the carbon dioxide gas cylinder 19 enters the first installation pipe 11 through the second hose 190. Subsequently, a large amount of carbon dioxide gas is blown through the fire extinguishing cover 12 on the first installation pipe 11 to the fire location to accurately extinguish the fire, enabling the fire to be timely controlled and reducing the damage degree of the components inside the low-voltage cabinet.

[0052] The second motor 46 drives the first transmission shaft 47 to rotate. The first transmission shaft 47 drives the fan blade 48 to rotate. The fan blade 48 blows air into the air inlet box 45. Subsequently, the dust and debris in the air are filtered by the first filter plate 49. The filtered air enters the dehumidification box 43 through the second air inlet pipe 44. Then, the moisture in the air is dried by the silica gel desiccant in the dehumidification box 43. During the drying process, the first transmission shaft 47 drives the second transmission shaft 51 to rotate. The second transmission shaft 51 drives the third transmission shaft 54 to rotate through the first gear 52 and the second gear 53. The third transmission shaft 54 drives the stirring rod 55 to rotate. The stirring rod 55 slowly stirs the silica gel desiccant in the dehumidification box 43, enabling the desiccant to fully contact the moisture in the air, greatly improving the drying effect of the air. The dried air evenly enters the air inlet cover 41 through the first air inlet pipe 42. Subsequently, the air inlet cover 41 supplies the air into the cabinet 1 through the first ventilation holes 31. Then, it enters the cabinet 1 through the second ventilation holes 36 on the first transmission plate 15 in the cabinet 1 to blow and dissipate heat from the components in the cabinet 1. The hot air after heat dissipation is discharged through the second ventilation holes 36 at the top of the cabinet 1, thereby realizing the heat dissipation of the dry air in the cabinet 1 and reducing the damage of the moisture in the air to the components in the cabinet 1.

[0053] The above has described in detail an embodiment of the present invention, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A low voltage cabinet protection structure for a substation, characterized in that: It comprises a cabinet (1) and two threaded rods (2) rotatably connected to the cabinet (1), wherein the two threaded rods (2) are connected to each other by a transmission wheel and a transmission belt, one end of one of the threaded rods (2) is fixedly connected to a first motor (3) fixedly connected to the cabinet (1) by a coupling, and a mounting plate (4) is threadedly matched on the threaded rod (2); A fire extinguishing mechanism, the fire extinguishing mechanism being arranged on the mounting plate (4) and the cabinet (1), and the fire extinguishing mechanism being used to extinguish a fire source in the cabinet (1); A ventilation and heat dissipation mechanism, wherein the ventilation and heat dissipation mechanism is arranged on the cabinet (1), and the ventilation and heat dissipation mechanism is used to supply air into the cabinet (1).

2. A low voltage cabinet protection structure for a substation according to claim 1, characterized in that: The fire extinguishing mechanism comprises a first mounting tube (11) fixedly connected to the mounting plate (4), a fire extinguishing hood (12) fixedly connected to the first mounting tube (11), a plurality of first plastic hoses (13) fixedly connected to the first mounting tube (11) via a threaded tube, a first spring (14) fixedly connected inside the cabinet (1), a first transmission plate (15) fixedly connected to the top of the first spring (14), a first air bag (16) connected to the cabinet (1) arranged below the first transmission plate (15), a first hose (17) fixedly connected to the first mounting tube (11) fixedly connected to the outer surface of the first air bag (16), a first control switch (18) fixedly connected to the cabinet (1), a carbon dioxide gas cylinder (19) fixedly connected to the cabinet (1), a second hose (190) fixedly connected to the first mounting tube (11) fixedly connected to the output end of the carbon dioxide gas cylinder (19), and an electromagnetic valve arranged on the second hose (190); The cabinet (1) is provided with a starting mechanism for controlling the operation of the first motor (3), and the starting mechanism is used to promptly detect a fire in the cabinet and control the operation of the first motor (3).

3. A low voltage cabinet protection structure for a substation according to claim 2, characterized in that: The starting mechanism comprises an installation box (21) fixedly connected to the cabinet (1), a second air bag (22) fixedly connected inside the installation box (21), an output end of the second air bag (22) fixedly connected to a second installation tube (23), an outer surface of the second installation tube (23) fixedly connected to a plurality of second plastic hoses (24) via a threaded tube, a pressure plate (25) slidably connected inside the installation box (21), a second spring (26) fixedly connected to the installation box (21) at the bottom of the pressure plate (25), and a second control switch (27) fixedly connected inside the installation box (21).

4. A low voltage cabinet protection structure for a substation according to claim 2, characterized in that: The cabinet (1) is provided with a first ventilation hole (31) at the top and the bottom, the first transmission plate (15) is fixedly connected to the top with a transmission column (32) slidably connected to the cabinet (1), the top of the transmission column (32) is fixedly connected to a second transmission plate (33), the bottoms of the first transmission plate (15) and the second transmission plate (33) are fixedly connected to a sealing column (34) slidably connected to the first ventilation hole (31), the bottoms of the second transmission plate (33) are fixedly connected to a third spring (35) fixedly connected to the cabinet (1), and the first transmission plate (15) and the second transmission plate (33) are both provided with a second ventilation hole (36).

5. A low voltage cabinet protection structure for a substation according to claim 1, characterized in that: The ventilation and heat dissipation mechanism comprises an air inlet hood (41) fixedly connected to the cabinet (1); the bottom of the air inlet hood (41) is fixedly connected to a first air inlet pipe (42); one end of the first air inlet pipe (42) is fixedly connected to a dehumidification box (43) fixedly connected to the cabinet (1); the top of the dehumidification box (43) is fixedly connected to a second air inlet hood (44); one end of the second air inlet hood (44) is fixedly connected to an air inlet box (45) fixedly connected to the cabinet (1); a second motor (46) is fixedly connected to the air inlet box (45); an output end of the second motor (46) is fixedly connected to a first transmission shaft (47) via a coupling; a fan blade (48) is fixedly connected to the outer surface of the first transmission shaft (47); and a first filter screen (49) rotatably connected to the first transmission shaft (47) is fixedly connected inside the air inlet box (45); The outer surface of the first transmission shaft (47) is drivingly connected to a drying actuator mechanism connected to the dehumidification box (43), and the drying actuator mechanism is used to dry the desiccant in the dehumidification box (43).

6. A low voltage cabinet protection structure for a substation according to claim 5, characterized in that: The baking and disturbing driving mechanism comprises a second transmission shaft (51) rotatably connected to the dehumidification box (43); the first transmission shaft (47) and the second transmission shaft (51) are connected via a transmission wheel and a transmission belt; the outer surface of the second transmission shaft (51) is fixedly sleeved with a first gear (52); the outer surface of the first gear (52) is meshingly connected with a second gear (53); the middle of the second gear (53) is fixedly sleeved with a third transmission shaft (54) rotatably connected to the dehumidification box (43); the outer surface of the third transmission shaft (54) is fixedly connected with a plurality of stirring rods (55); a plurality of electric heating plates (56) are fixedly connected inside the dehumidification box (43); and a heat dissipation hole (57) is provided on the top of the dehumidification box (43).

7. A low voltage cabinet protection structure for a substation according to claim 5, characterized in that: A cleaning brush (490) is fixedly connected to the outer surface of the first transmission shaft (47) and is slidably connected to the first filter screen plate (49).

8. A low voltage cabinet protection structure for a substation according to claim 5, characterized in that: One end of the first air inlet pipe (42) is fixedly connected to a filter screen.

9. A low voltage cabinet protection structure for a substation according to claim 1, characterized in that: A shielding plate is fixedly connected to the top of the cabinet (1).

10. A low voltage cabinet protection structure for a substation according to claim 1, characterized in that: An exhaust pipe is provided on the top of the cabinet (1), and an electromagnetic valve is provided on the exhaust pipe.

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