Intelligent airing device for cable trench of transformer substation

Abstract

The invention discloses a transformer substation cable trench intelligent airing device, and relates to the technical field of cable trench airing, the transformer substation cable trench intelligent airing device comprises a base, the connecting end of a cover plate is rotatably connected with the base, the base is provided with a lifting assembly, the lifting assembly comprises two guide bosses symmetrically arranged on the two inner side walls of the base, and the guide bosses are arranged on the two inner side walls of the base. An extension plate flush with the top edge of the base is correspondingly arranged above each guide boss, the vertical distance between each guide boss and the corresponding extension plate is gradually decreased from the end, away from the connecting end of the cover plate, of the corresponding guide boss to the end, close to the connecting end of the cover plate, of the corresponding guide boss, and a through groove is formed in each extension plate; the guide boss is in sliding connection with an ejector rod through a reciprocating driving assembly, and when the ejector rod is located at the lowest end of the guide boss, the top end of the ejector rod is located in the through groove. According to the intelligent airing device for the cable trench of the transformer substation, intelligent opening and closing of the airing opening can be achieved, and meanwhile workers can conveniently and completely open the cover plate to overhaul the interior of the cable trench.

Description

Technical Field

[0001] The invention relates to the technical field of cable trench drying, and in particular to an intelligent drying device for a cable trench in a substation. Background Art

[0002] At present, substations are equipped with multiple drying ports on the cable trenches. After rainy weather, operators need to open the covers of the drying ports for ventilation and drying to prevent water accumulation in the cable trenches and failures caused by excessive humidity. If the operators do not maintain them properly, serious water accumulation will often occur inside the cable trenches, posing a great safety hazard. However, if operators have to manually open so many cable trench drying port covers, the work intensity is too high and too much manpower is used, resulting in a further increase in labor costs.

[0003] Based on the above problems, some cable trench moisture-proof covers that can be automatically opened and closed have come into being. For example, the Chinese patent with application number 202022515574.6 provides an intelligent lifting cable trench moisture-proof cover, including a base plate, a cover plate, a load-bearing support rod, a lifting part and a hinge; the base plate and one side of the cover plate are hinged by a hinge, the load-bearing support rod is an arc rod structure, the upper end of the load-bearing support rod is hinged to the cover plate, and the lower end of the load-bearing support rod is hinged to the lifting part.

[0004] Although the above structure can realize the intelligent lifting and lowering of the cover plate, it is inconvenient for the staff to inspect the inside of the cable trench during use: it is not convenient to remove the arc rod from the cover plate, and the arc rod limits the opening and closing angle of the cover plate to a certain extent, and also creates certain obstacles to the staff's maintenance work.

[0005] In order to solve the above problems, it is necessary to provide a new type of intelligent drying device for substation cable trench. Summary of the invention

[0006] The purpose of the present invention is to provide an intelligent drying device for a substation cable trench, which can realize the intelligent opening and closing of the drying opening, and at the same time facilitate the staff to fully open the cover to carry out maintenance inside the cable trench.

[0007] To achieve the above-mentioned objectives, the present invention provides an intelligent drying device for cable trench in a substation, comprising a base fixed at the drying opening of the cable trench, the base being provided with a cover plate, the connecting end of the cover plate being rotatably connected to the base, the base being provided with a lifting component for driving the cover plate to open and close, the lifting component comprising a guide boss, the guide bosses having two and symmetrically arranged on the two inner side walls of the base, an extension plate flush with the top edge of the base being correspondingly arranged above each of the guide bosses, the vertical distance between the guide boss and the extension plate gradually decreasing from the end of the guide boss away from the connecting end of the cover plate to the end close to the connecting end of the cover plate, the extension plate being provided with a through groove arranged along its length direction, the guide boss being slidably connected to the push rod through a reciprocating driving component, and the top end of the push rod being located at the lowest end of the guide boss

[0008] Preferably, the reciprocating drive assembly includes a rack, a dovetail groove, a sliding seat and a motor, the rack and the dovetail groove are arranged in parallel on the guide boss and are both arranged along the length direction of the guide boss, the sliding seat is slidably arranged in the dovetail groove, the motor and the push rod are both fixed on the sliding seat, the output end of the motor is connected to the gear, and the gear is meshingly connected to the rack.

[0009] Preferably, a roller is provided at the top end of the push rod, and the size of the roller is smaller than the cross-sectional size of the through slot.

[0010] Preferably, a humidity sensor is provided in the cable trench, the humidity sensor is connected to a controller located on the inner wall of the base, and the controller is connected to the motor.

[0011] Preferably, the cover plate is tiltedly arranged on the base, and a snow removal component is provided on the cover plate, the snow removal component includes a blowing plate, an air duct and a blower, the blowing plate is located at the top of the outer side surface of the cover plate, a temperature and humidity sensor electrically connected to the controller is provided on the top of the blowing plate, the air duct and the blower are located on the inner side surface of the cover plate, the blowing plate is connected to the blower through the air duct, a resistance wire heater is provided in the air duct, the second electromagnetic switch on the resistance wire heater and the first electromagnetic switch on the blower are both connected to the controller.

[0012] Preferably, a photovoltaic panel is provided on the outer surface of the cover plate, and the photovoltaic panel is arranged opposite to the blowing port of the blowing plate. A battery electrically connected to the photovoltaic panel is provided on the inner side surface of the cover plate, and the humidity sensor, the temperature and humidity sensor, the controller, the resistance wire heater, the blower, the second electromagnetic switch and the first electromagnetic switch are all connected to the battery.

[0013] Preferably, a lighting lamp connected to the battery is provided on the top surface of the blowing plate, and a light sensing switch on the lighting lamp is connected to the controller.

[0014] Preferably, both side edges and the bottom edge of the cover plate are provided with folded edges, the top edge of the cover plate is connected to a water baffle plate arranged obliquely downward, and the folded edges and the water baffle plate are both located outside the side wall of the base.

[0015] Preferably, a protective net is provided between the base and the cover plate, and the protective net is located between the two through slots, and threading holes arranged parallel to the through slots are provided on both sides of the protective net.

[0016] Preferably, a fan is provided in the middle of the protective net, and the fan is connected to the controller.

[0017] Therefore, the present invention adopts a substation cable trench intelligent drying device with the above structure, which has the following beneficial effects: The humidity in the cable trench is detected by a humidity sensor and the signal is transmitted to the controller. When the humidity signal is higher than the set value, the controller controls the reciprocating drive assembly to start moving the push rod toward the connection end of the cover plate. The push rod lifts the cover plate during the movement to realize intelligent drying of the cable trench.

[0018] There is no fixed connection between the top rod and the cover plate. When the staff inspect the inside of the cable trench through the drying opening, the top rod will not limit the opening angle of the cover plate, nor will it hinder the staff's inspection work.

[0019] The setting of the protective net can effectively prevent small animals or debris such as fallen leaves from entering the cable trench. At the same time, the fan on the protective net can increase the dissipation of moisture in the cable trench.

[0020] The air blowing plate on the cover can blow hot air according to the outside temperature, effectively preventing the accumulation of snow and water on the cover and affecting the air humidity in the cable trench.

[0021] The cover plate is provided with a photovoltaic panel, which can supply power to the motor, controller and other electrical components in the device without the need for an additional power supply. In addition, the photovoltaic panel and the blowing plate are arranged opposite to each other, and the blowing plate can be used to ensure that snow does not accumulate on the photovoltaic panel and affect the photoelectric conversion efficiency.

[0022] The cover plate is provided with a lighting lamp, which can illuminate at night and effectively prevent pedestrians from colliding with the device when walking at night.

[0023] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a structural schematic diagram of an embodiment of the intelligent drying device for cable trench in a substation of the present invention; Figure 2 It is a structural schematic diagram of an embodiment of a base in a cable trench intelligent drying device for a substation according to the present invention; Figure 3 It is a structural schematic diagram of an embodiment of a reciprocating drive assembly in a cable trench intelligent drying device for a substation according to the present invention; Figure 4 It is a structural schematic diagram of an embodiment of a snow removal component in a smart drying device for a cable trench in a substation according to the present invention; Figure 5 It is a structural schematic diagram of an embodiment of a protective net in the intelligent drying device for a substation cable trench of the present invention. Reference numerals

[0025] 1. Base; 2. Cover plate; 3. Guide boss; 4. Extension plate; 5. Through slot; 6. Reciprocating drive assembly; 61. Rack; 62. Dovetail slot; 63. Sliding seat; 64. Motor; 65. Gear; 7. Push rod; 8. Roller; 9. Blowing plate; 10. Air duct; 11. Blower; 12. Lighting lamp; 13. Temperature and humidity sensor; 14. Photovoltaic panel; 15. Battery; 16. Protective net; 17. Threading hole; 18. Fan; 19. Folding edge; 20. Water retaining plate. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below through the accompanying drawings and embodiments. Example

[0027] like Figure 1-5 As shown, an intelligent drying device for a cable trench in a substation includes a base 1 fixed at the drying port of the cable trench, and a cover plate 2 is provided on the base 1. Folding edges 19 are provided on both side edges and the bottom edge of the cover plate 2, and the top edge of the cover plate 2 is connected to a water baffle 20 arranged obliquely downward, and the folding edges 19 and the water baffle 20 are both located on the outside of the side wall of the base 1. The folding edges 19 and the water baffle 20 can increase the water-blocking protection effect of the cover plate 2 on the drying port. The connecting end of the cover plate 2 is rotatably connected to the base 1, and a lifting component for driving the cover plate 2 to open and close is provided on the base 1.

[0028] The lifting assembly includes a guide boss 3, which has two guide bosses 3 and is symmetrically arranged on the two inner side walls of the base 1. An extension plate 4 flush with the top edge of the base 1 is correspondingly arranged above each guide boss 3, and the vertical distance between the guide boss 3 and the extension plate 4 gradually decreases from the end of the guide boss 3 away from the connection end of the cover plate 2 to the end close to the connection end of the cover plate 2. The guide boss 3 is slidably connected to the push rod 7 through a reciprocating drive assembly 6, and the reciprocating drive assembly 6 includes a rack 61, a dovetail groove 62, a sliding seat 63 and a motor 64. The rack 61 and the dovetail groove 62 are arranged in parallel on the guide boss 3 and are both arranged along the length direction of the guide boss 3, and the sliding seat 63 is slidably arranged in the dovetail groove 62. A roller 8 is provided at the top of the push rod 7, and the size of the roller 8 is smaller than the cross-sectional size of the through groove 5. The roller 8 can reduce the wear between the push rod 7 and the cover plate 2. The motor 64 and the push rod 7 are both fixed on the sliding seat 63, the output end of the motor 64 is connected to the gear 65, and the gear 65 is meshed and connected with the rack 61. The extension plate 4 is provided with a through groove 5 arranged along its length direction, and when the push rod 7 is located at the lowest end of the guide boss 3, the top end of the push rod 7 is located in the through groove 5. A humidity sensor is provided in the cable trench, and the humidity sensor is connected to the controller located on the inner side wall of the base 1, and the controller is connected to the motor 64.

[0029] Before use, select a push rod 7 of different lengths according to the opening angle requirement of the cover plate 2. When in use, the humidity sensor detects the humidity in the cable trench and transmits a signal to the controller. When the humidity signal is higher than the set value, the controller controls the motor 64 in the reciprocating drive assembly 6 to start, and the motor 64 drives the gear 65 to rotate. The gear 65 and the rack 61 cooperate to make the sliding seat 63 move back and forth in the dovetail groove 62. The movement of the sliding seat 63 drives the push rod 7 to move. When the push rod 7 is located at the lowest end of the guide boss 3, the top of the push rod 7 is located in the through groove 5. The cover plate 2 is closed under the action of gravity. When the push rod 7 is located at the highest end of the guide boss 3, the push rod 7 pushes the cover plate 2 to the maximum opening angle. When the staff needs to inspect the inside of the cable trench through the drying port, the staff can manually open the cover plate 2 completely. At this time, the push rod 7 will not limit the opening angle of the cover plate 2, nor will it hinder the staff's inspection work.

[0030] The cover plate 2 is tiltedly arranged on the base 1, and a snow removal assembly is provided on the cover plate 2, and the snow removal assembly includes a blowing plate 9, an air duct 10 and a blower 11. A lighting lamp 12 connected to a battery 15 is provided on the top surface of the blowing plate 9, and a light sensing switch on the lighting lamp 12 is connected to a controller. The lighting lamp 12 can illuminate at night, effectively preventing pedestrians from colliding with the device when walking at night. The blowing plate 9 is located at the top of the outer side surface of the cover plate 2, and a temperature and humidity sensor 13 electrically connected to the controller is provided on the top of the blowing plate 9. The air duct 10 and the blower 11 are located on the inner side surface of the cover plate 2, and the blowing plate 9 is connected to the blower 11 through the air duct 10. A resistance wire heater is provided in the air duct 10, and the second electromagnetic switch on the resistance wire heater and the first electromagnetic switch on the blower 11 are both connected to the controller.

[0031] When in use, the temperature and humidity sensor 13 detects the external air humidity and air temperature, and transmits the detected temperature and humidity to the controller. When the temperature and humidity conditions reach the conditions for snowing, the controller controls the first electromagnetic switch to start the blower 11, controls the second electromagnetic switch to start the resistance wire heater, and blows out hot air from the blowing plate 9 to prevent snow from accumulating on the cover plate 2 and affecting the air humidity inside the cable trench.

[0032] A photovoltaic panel 14 is provided on the outer side of the cover plate 2. The photovoltaic panel 14 is arranged opposite to the blowing port of the blowing plate 9. When the blowing plate 9 is working, the snow on the photovoltaic panel 14 can be blown away to ensure that the photovoltaic panel 14 will not accumulate snow and affect the photoelectric conversion efficiency. A battery 15 electrically connected to the photovoltaic panel 14 is provided on the inner side of the cover plate 2. The humidity sensor, the temperature and humidity sensor 13, the controller, the resistance wire heater, the blower 11, the second electromagnetic switch and the first electromagnetic switch are all connected to the battery 15. The photovoltaic panel 14 can supply power to the motor 64, the humidity sensor, the temperature and humidity sensor 13, the controller, the resistance wire heater, the blower 11, the second electromagnetic switch and the first electromagnetic switch in the device without the need for an additional power supply.

[0033] A protective net 16 is provided between the base 1 and the cover plate 2, and the protective net 16 is located between the two through slots 5. The position of the protective net 16 will not affect the contact between the top rod 7 and the cover plate 2 through the through slots 5. Wire holes 17 arranged parallel to the through slots 5 are provided on both sides of the protective net 16. The wire holes 17 facilitate the wires on electrical components such as the humidity sensor, the controller, the second electromagnetic switch and the first electromagnetic switch. A fan 18 is provided in the middle of the protective net 16. The fan 18 is connected to the controller. When the cable trench is aired, the controller can control the fan 18 to start, thereby increasing the efficiency of dissipating moisture in the cable trench.

[0034] Therefore, the present invention adopts an intelligent drying device for a substation cable trench with the above structure, which can realize the intelligent opening and closing of the drying port, and at the same time facilitate the staff to fully open the cover to carry out maintenance inside the cable trench, and can also effectively prevent snow from entering the cable trench.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An intelligent drying device for a cable trench in a substation, comprising a base (1) fixed at a drying opening of the cable trench, a cover plate (2) being provided on the base (1), characterized in that: The connecting end of the cover plate (2) is rotatably connected to the base (1); a lifting assembly for driving the cover plate (2) to open and close is provided on the base (1); the lifting assembly comprises a guide boss (3); there are two guide bosses (3) symmetrically arranged on two inner side walls of the base (1); an extension plate (4) flush with the top edge of the base (1) is correspondingly arranged above each guide boss (3); the vertical distance between the guide boss (3) and the extension plate (4) gradually decreases from the end of the guide boss (3) away from the connecting end of the cover plate (2) to the end close to the connecting end of the cover plate (2); a through groove (5) is provided on the extension plate (4) along its length direction; the guide boss (3) is slidably connected to the push rod (7) via a reciprocating drive assembly (6); when the push rod (7) is located at the lowest end of the guide boss (3), the top end of the push rod (7) is located in the through groove (5).

2. The intelligent drying device for cable trench in a substation according to claim 1, characterized in that: The reciprocating drive assembly (6) comprises a rack (61), a dovetail groove (62), a sliding seat (63) and a motor (64); the rack (61) and the dovetail groove (62) are arranged in parallel on the guide boss (3) and are arranged along the length direction of the guide boss (3); the sliding seat (63) is slidably arranged in the dovetail groove (62); the motor (64) and the push rod (7) are both fixed on the sliding seat (63); the output end of the motor (64) is connected to a gear (65); and the gear (65) is meshingly connected to the rack (61).

3. The intelligent drying device for cable trench in a substation according to claim 2, characterized in that: A roller (8) is provided at the top end of the push rod (7), and the size of the roller (8) is smaller than the cross-sectional size of the through slot (5).

4. The intelligent drying device for cable trench in a substation according to claim 3, characterized in that: A humidity sensor is provided in the cable trench, the humidity sensor is connected to a controller located on the inner wall of the base (1), and the controller is connected to the motor (64).

5. The intelligent drying device for cable trench in a substation according to claim 4, characterized in that: The cover plate (2) is tiltedly arranged on the base (1), and a snow removal component is provided on the cover plate (2), the snow removal component comprising a blowing plate (9), an air duct (10) and a blower (11), the blowing plate (9) being located at the top of the outer side surface of the cover plate (2), a temperature and humidity sensor (13) electrically connected to the controller being provided at the top of the blowing plate (9), the air duct (10) and the blower (11) being located at the inner side surface of the cover plate (2), the blowing plate (9) being connected to the blower (11) via the air duct (10), a resistance wire heater being provided in the air duct (10), and a second electromagnetic switch on the resistance wire heater and a first electromagnetic switch on the blower (11) being connected to the controller.

6. The intelligent drying device for cable trench in a substation according to claim 5, characterized in that: A photovoltaic panel (14) is provided on the outer side surface of the cover plate (2), and the photovoltaic panel (14) is arranged opposite to the blowing port of the blowing plate (9). A storage battery (15) electrically connected to the photovoltaic panel (14) is provided on the inner side surface of the cover plate (2), and the humidity sensor, the temperature and humidity sensor (13), the controller, the resistance wire heater, the blower (11), the second electromagnetic switch and the first electromagnetic switch are all connected to the storage battery (15).

7. The intelligent drying device for cable trench in a substation according to claim 6, characterized in that: The top surface of the blowing plate (9) is provided with a lighting lamp (12) connected to the storage battery (15), and the light sensing switch on the lighting lamp (12) is connected to the controller.

8. The intelligent drying device for cable trench in a substation according to claim 7, characterized in that: Folding edges (19) are provided on both side edges and the bottom edge of the cover plate (2); the top edge of the cover plate (2) is connected to a water retaining plate (20) arranged obliquely downward; and the folding edges (19) and the water retaining plate (20) are both located outside the side wall of the base (1).

9. The intelligent drying device for cable trench in a substation according to claim 8, characterized in that: A protective net (16) is provided between the base (1) and the cover plate (2), and the protective net (16) is located between the two through slots (5). Threading holes (17) arranged parallel to the through slots (5) are provided on both sides of the protective net (16).

10. The intelligent drying device for cable trench in a substation according to claim 9, characterized in that: A fan (18) is provided in the middle of the protective net (16), and the fan (18) is connected to the controller.

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