Common box enclosed bus with dehumidification structure

Abstract

This utility model provides a common-enclosed busbar with a dehumidification structure, relating to the field of power transmission line technology. It includes an outer casing with multiple busbars equidistantly installed inside. A dehumidification assembly is installed on the top of the casing, comprising an air inlet box. The air inlet box is fixed to the outer wall of the top of the casing, and a drying box is fixed to the inner wall of the top of the casing. A drying layer is fixed inside the drying box, and pulleys are rotatably mounted at both ends of the drying layer via bearings. Compared to existing technologies, the movement of the transmission belt drives two sets of horizontal tubes to move around the inside of the casing, and the baffle guides the incoming air, drying it from the drying layer and sending it into the horizontal tubes. This allows the dried air to be evenly distributed inside the casing, and combined with the absorption of moisture from the side walls of the casing by drying cotton strips, effectively removing moisture from the common-enclosed busbar.

Description

Technical Field

[0001] This utility model relates to the field of power transmission line technology, specifically to a common-enclosed busbar with a dehumidification structure. Background Technology

[0002] A common-enclosed busbar is a power transmission system that encapsulates multiple conductors within the same metal casing. It is primarily used in power plants, industrial and mining enterprises, and other similar settings to provide electrical connections between generators and main transformers, transformers and high-voltage distribution cabinets, and the main circuits of high-voltage equipment. The common-enclosed busbar features a robust casing design, and installation and maintenance holes can be flexibly located at the top or bottom of the busbar to meet different needs. The internal humidity directly affects the equipment's insulation performance and operational stability. When the external humidity is high or the temperature difference is large, the sealing structure at the busbar section connections may develop tiny gaps due to thermal expansion and contraction, allowing moisture to seep into the casing. After the moisture condenses on the metal surface, it may cause aging of the insulation material, phase-to-phase short circuits, or partial discharge, potentially leading to equipment shutdown in severe cases.

[0003] Patent CN222464087U proposes a common-enclosed busbar with a dehumidification structure. Through the installation of the busbar trunking shell, a fan blows outside air dried by drying cotton into the busbar trunking shell. The airflow flows along the laying direction of the high-voltage common-enclosed busbar, carrying away moisture from the high-voltage common-enclosed busbar body. Temperature and humidity sensors monitor the temperature and humidity inside the busbar trunking shell. In conjunction with a PLC controller, a servo motor drives a screw to rotate, causing the sealing plate and protrusions to slide synchronously, adjusting the ventilation area of ​​the square tube inlet. The ventilation area is positively correlated with temperature. During the flow process, the airflow exchanges heat with the insulation layer of the high-voltage common-enclosed busbar body, carrying away moisture from the high-voltage common-enclosed busbar body, achieving the purpose of dehumidification. A heat-conducting plate, together with heat sinks, transfers heat to the air inside the square tube, accelerating heat exchange and improving the cooling effect, thus possessing an adsorption-type drying structure.

[0004] Although the above technical solution can dry the inside of the casing through air exchange, the direction of air inlet and outlet is relatively limited because the position of the drying structure needs to be fixed. The diffusion of dry air into the busbar casing is slow, and the drying effect is poor for more distant locations. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a common-enclosed busbar with a dehumidification structure to solve the problems mentioned in the background. This invention features a novel structure. By moving the transmission belt, two sets of horizontal tubes move around the inside of the outer casing. In conjunction with the partition, the incoming air is guided and dried from the drying layer to the inside of the horizontal tubes. This allows the dried gas to be evenly distributed inside the outer casing. Combined with the absorption of moisture from the side walls of the outer casing by the drying cotton strips, this effectively removes moisture from the common-enclosed busbar.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a common-box enclosed busbar with a dehumidification structure, comprising an outer casing, with multiple busbars equidistantly installed inside the casing, a dehumidification assembly installed on the top of the casing, the dehumidification assembly including an air inlet box, the air inlet box being fixed to the outer wall of the top of the casing, and a drying box being fixed to the inner wall of the top of the casing, a drying layer being fixed inside the drying box, and pulleys being rotatably mounted at both ends of the drying layer at the bottom of the drying box via bearings, the two pulleys being sleeved with a transmission belt, two sets of horizontal tubes being provided at the bottom of the drying box, and air outlets being equidistantly opened on the surface of the horizontal tubes, the top of the horizontal tubes being fixedly connected to the transmission belt, and a winding assembly being provided on the inner walls of both sides of the casing, the winding assembly including a winding shaft, the winding shafts being rotatably mounted at both ends of the inner walls of both sides of the casing via bearing seats, and drying cotton strips being wound on the two winding shafts.

[0007] Furthermore, the dehumidification assembly also includes a fan. Two sets of fans are installed on the top of the air inlet box corresponding to the two pulleys. The drive shaft of the fan passes through the inside of the drying box and is fixed with a shaft rod. The shaft rod rotates through the drying layer and is fixedly connected to the pulley.

[0008] Furthermore, the drying box has a cavity located on the outside of the drying layer, and an annular belt is fixed to the top of the cavity. Two notches are opened on the surface of the annular belt, and partitions are fixed to the bottom of the two notches of the annular belt. The partitions are slidably connected to the inner wall of the drying box and the drying layer, respectively.

[0009] Furthermore, the top and bottom of the drying layer are provided with perforated windows, and a baffle is provided between the bottom of the drying layer and the pulley, with the drying layer fixed to the top of the baffle.

[0010] Furthermore, a connecting plate is fixed to the bottom of the two partitions, and a vertical tube is fixedly inserted into the surface of the connecting plate. The vertical tube is fixedly inserted into the transmission belt, and the bottom of the transmission belt extends out of the drying box. The bottom of the vertical tube is fixedly connected to the horizontal tube.

[0011] Furthermore, a connection channel is fixedly connected between the air inlet box and the drying box.

[0012] Furthermore, the winding assembly also includes a transmission rod, with the transmission rod rotatably mounted on both sides of the connecting channel via bearings, and transmission bevel gears fixed at both ends of the transmission rod. A drive bevel gear is fixed on the surface of the shaft, and the transmission bevel gear at one end of the transmission rod meshes with the drive bevel gear.

[0013] Furthermore, a driven bevel gear is fixedly installed on the top of the winding shaft via an electric push rod. After the driven bevel gear rises, it can engage with the transmission bevel gear at the other end of the transmission rod.

[0014] The beneficial effects of this utility model are:

[0015] 1. In this invention, after the dried cotton strips released from the two take-up shafts have been used for a period of time, their ability to absorb moisture decreases. At this time, the electric push rod at the top of the take-up shaft meshes with the driven bevel gear and the transmission bevel gear. While the fan rotates and drives the pulley to rotate, it also drives the front take-up shaft to rotate, thereby pulling the rear take-up shaft to unwind and rotate the used dried cotton strips to rewind and replace them with new cotton strips for continued use.

[0016] 2. This utility model uses a fan to draw outside air into the air inlet box, which is then sent to the upper part of the drying box through a connecting channel. Because most of the upper part of the drying box is blocked by the annular belt, with only two openings, air will flow in through the openings and pass through the drying layer under the guidance of the partition. The interior of the drying layer can be a box filled with desiccant. After the gas is dried by the desiccant, it is sent out from the bottom to the position directly opposite the vertical pipe, and then sent into the interior of the horizontal pipe through the vertical pipe and out of the air outlet. Along with one end of the annular belt, the two horizontal pipes send the dried gas into various positions inside the outer shell.

[0017] 3. Because of the partition, this utility model can deliver air into a portion of the drying layer at a specific point, thus preventing most of the drying layer from being exposed and affecting its overall drying effect.

[0018] 4. Compared with the prior art, this utility model uses the movement of the transmission belt to drive two sets of horizontal tubes to move around the inside of the outer shell, and with the help of the partition plate to guide the incoming air, the dried air is sent out from the drying layer to the inside of the horizontal tubes. This can evenly spread the dried gas into the inside of the outer shell, and with the help of the drying cotton strips to absorb the moisture on the side wall of the outer shell, the moisture in the common enclosure busbar can be effectively removed. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a common-enclosed busbar with a dehumidification structure according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal installation of a common-enclosed busbar with a dehumidification structure according to the present invention.

[0021] Figure 3 This is a schematic diagram showing the connection between the dehumidification assembly and the winding assembly of a common-box enclosed busbar with a dehumidification structure according to this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of a drying box with a dehumidification structure for a common-box enclosed busbar according to this utility model;

[0023] Figure 5 This is a schematic diagram of the bottom structure of a drying box with a dehumidification structure for a common-box enclosed busbar according to the present invention;

[0024] Figure 6 This is a schematic diagram of the drying layer side plate and bottom connection of a common-box enclosed busbar with a dehumidification structure according to the present invention;

[0025] Figure 7 This is a schematic diagram of the connection between the partition and the vertical pipe of a common-box enclosed busbar with a dehumidification structure according to this utility model.

[0026] In the diagram: 1. Outer shell; 2. Busbar; 3. Dehumidification assembly; 31. Air inlet box; 32. Fan; 33. Horizontal pipe; 34. Drying box; 35. Connecting channel; 36. Drying layer; 37. Shaft; 38. Annular belt; 39. Cavity; 310. Partition; 311. Perforated window; 312. Baffle; 313. Drive belt; 314. Air outlet; 315. Connecting plate; 316. Vertical pipe; 317. Pulley; 4. Rewinding assembly; 41. Drive rod; 42. Drive bevel gear; 43. Driven bevel gear; 44. Driven bevel gear; 45. Rewinding shaft; 46. Drying cotton strip. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] Please see Figures 1 to 7This utility model provides a technical solution: a common-box enclosed busbar with a dehumidification structure, including a housing 1, with multiple busbars 2 equidistantly installed inside the housing 1, a dehumidification assembly 3 installed on the top of the housing 1, the dehumidification assembly 3 including an air inlet box 31, the air inlet box 31 being fixed to the outer wall of the top of the housing 1, and a drying box 34 being fixed to the inner wall of the top of the housing 1, a drying layer 36 being fixed inside the drying box 34, and pulleys 317 being rotatably mounted at both ends of the bottom of the drying layer 36 via bearings, the two pulleys 317 being sleeved with a transmission belt 313, and two sets of horizontal tubes 33 being provided at the bottom of the drying box 34, with the surface of the horizontal tubes 33 being equidistantly... An air outlet 314 is provided at the opening. The top of the horizontal pipe 33 is fixedly connected to the transmission belt 313. The inner walls on both sides of the outer shell 1 are provided with a winding assembly 4. The winding assembly 4 includes a winding shaft 45. Both ends of the inner walls on both sides of the outer shell 1 are rotatably mounted with winding shafts 45 through bearing seats. Drying cotton strips 46 are wound on the two winding shafts 45. When using the device, the dehumidification assembly 3 and the winding assembly 4 are respectively installed on the top and the inner wall of the side plate of the outer shell 1. The dehumidification assembly 3 dries the outside air through the drying layer 36 and then sends it in through the two horizontal pipes 33 to dry the inside of the outer shell 1 and drive the air flow. The drying cotton strips 46 of the winding assembly 4 assist in the drying of the inside of the outer shell 1.

[0029] In this embodiment, the dehumidification component 3 further includes a fan 32. Two sets of fans 32 are installed on the top of the air inlet box 31, corresponding to the positions of the two pulleys 317. The drive shaft of the fan 32 passes through the inside of the drying box 34 and is fixed with a shaft 37. The shaft 37 rotates through the drying layer 36 and is fixedly connected to the pulleys 317. The drying box 34 is provided with a cavity 39 on the outside of the drying layer 36, and an annular belt 38 is fixed to the top of the cavity 39. Two notches are opened on the surface of the annular belt 38, and the bottoms of the two notches of the annular belt 38 are fixed. There are partitions 310, which are slidably connected to the inner wall of the drying box 34 and the drying layer 36 respectively. The top and bottom of the drying layer 36 are provided with perforated windows 311. A baffle 312 is provided between the bottom of the drying layer 36 and the pulley 317, and the drying layer 36 is fixed to the top of the baffle 312. Connecting plates 315 are fixed to the bottom of the two partitions 310, and vertical tubes 316 are fixedly inserted into the surface of the connecting plates 315. The vertical tubes 316 are fixedly inserted into the transmission belt 313, and the bottom of the transmission belt 313 extends out of the drying box. Box 34, the bottom of the vertical pipe 316 is fixedly connected to the horizontal pipe 33, and the air inlet box 31 and the drying box 34 are fixedly connected by a connecting channel 35. The fan 32 is controlled by a drive motor to draw outside air into the air inlet box 31 and send it into the upper part of the drying box 34 through the connecting channel 35. Because most of the upper part of the drying box 34 is blocked by the annular belt 38, with only two gaps, air will flow in from the gaps and pass through the drying layer 36 under the guidance of the partition 310. The interior of the drying layer 36 can be a box filled with desiccant. The gas passes through the desiccant After drying, the air is sent from the bottom to the position directly opposite the vertical pipe 316, and then sent into the interior of the horizontal pipe 33 through the vertical pipe 316 and out through the air outlet 314. Along with one end of the annular belt 38, the two horizontal pipes 33 send the drying gas into various positions inside the outer casing 1. The two horizontal pipes 33 are staggered to prevent movement interference. There is also enough space inside the outer casing 1 for the horizontal pipes 33 to turn. Because of the partition 310, the air can be sent into a part of the drying layer 36 at a fixed point, thereby avoiding the drying layer 36 being mostly exposed to the outside, which would affect its overall drying effect.

[0030] In this embodiment, the winding assembly 4 further includes a transmission rod 41. The transmission rod 41 is rotatably mounted on both sides of the connecting channel 35 via bearings, and transmission bevel gears 42 are fixed at both ends of the transmission rod 41. A driving bevel gear 44 is fixed on the surface of the shaft 37, and the transmission bevel gear 42 at one end of the transmission rod 41 meshes with the driving bevel gear 44. A driven bevel gear 43 is fixedly mounted on the top of the winding shaft 45 via an electric push rod (not shown in the figure). The driven bevel gear 43 can mesh with the transmission bevel gear 42 at the other end of the transmission rod 41 after rising. Here, the transmission between the winding shaft 45 and the fan 32 is intermittent. For example, after the drying cotton strips 46 released from the two winding shafts 45 have been used for a period of time, their moisture absorption capacity decreases. At this time, the electric push rod at the top of the winding shaft 45 connects the driven bevel gear 43 with the driving bevel gear 44. The 42 meshing connection allows the fan 32 to rotate, driving the pulley 317 to rotate, which in turn drives the front take-up shaft 45 to rotate. This pulls the rear take-up shaft 45 to unwind the used dry cotton strips 46 and rotate them back up, allowing for the replacement of new cotton strips for continued use. As an auxiliary drying technique, to avoid interference from movement, the electric push rod at the top of the take-up shaft 45 and the driven bevel gear 43 can be replaced with a plug-in connection. Since the positions of the shaft 37 and the drive bevel gear 42 remain unchanged, the driven bevel gear 43 can be directly rotated and mounted on the inner wall of the housing 1 through the bearing seat, always maintaining a meshing relationship with the drive bevel gear 42. The extended end of the electric push rod can be plugged into the bottom of the driven bevel gear 43. The two can adopt a common structure of insertion and snap-fit, such as existing hex bolts and hex wrenches, thus enabling the shaft 37 to drive the rotation of the take-up shaft 45.

[0031] When using the device, the dehumidification assembly 3 and the winding assembly 4 are respectively installed on the top of the outer casing 1 and the inner wall of the side panel. The fan 32 is controlled by a drive motor to draw outside air into the air inlet box 31 and send it into the upper end of the drying box 34 through the connecting channel 35. Because most of the upper end of the drying box 34 is blocked by the annular belt 38, with only two openings, air will flow in through the openings and pass through the drying layer 36 under the guidance of the partition 310. The drying layer 36 can be a box filled with desiccant. After the gas is dried by the desiccant, it is sent out from the bottom to the position directly opposite the vertical pipe 316, and then sent into the horizontal pipe 33 through the vertical pipe 316 and out of the air outlet 314. With one end of the annular belt 38, the two horizontal pipes 33 send the dried gas into various positions inside the outer casing 1, and the two The horizontal tubes 33 are staggered to prevent movement interference. The interior of the outer casing 1 also has enough space for the horizontal tubes 33 to turn. Due to the partition 310, air can be delivered to a specific area of ​​the drying layer 36, thus preventing most of the drying layer 36 from being exposed and affecting its overall drying effect, and promoting airflow. After the drying cotton strips 46 released by the two take-up shafts 45 have been used for a period of time, their moisture absorption capacity decreases. At this time, the electric push rod at the top of the take-up shaft 45 engages with the driven bevel gear 43 and the transmission bevel gear 42. When the fan 32 rotates and drives the pulley 317 to rotate, it also drives the front take-up shaft 45 to rotate, thereby pulling the rear take-up shaft 45 to unwind and rotate the used drying cotton strips 46 to replace them with new cotton strips for continued use.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A common-enclosed busbar with a dehumidification structure, comprising an outer casing (1), characterized in that: Multiple busbars (2) are equidistantly installed inside the outer casing (1). A dehumidification assembly (3) is installed on the top of the outer casing (1). The dehumidification assembly (3) includes an air inlet box (31). The air inlet box (31) is fixed on the outer wall of the top of the outer casing (1), and a drying box (34) is fixed on the inner wall of the top of the outer casing (1). A drying layer (36) is fixed inside the drying box (34), and pulleys (317) are rotatably mounted at both ends of the drying box (34) at the bottom of the drying layer (36) via bearings. The two pulleys (317) are sleeved together. There is a drive belt (313). The bottom of the drying box (34) is provided with two sets of horizontal tubes (33), and air outlets (314) are provided at equal intervals on the surface of the horizontal tubes (33). The top of the horizontal tubes (33) is fixedly connected to the drive belt (313). The inner walls on both sides of the outer shell (1) are provided with winding assemblies (4). The winding assembly (4) includes a winding shaft (45). Both ends of the inner walls on both sides of the outer shell (1) are rotatably mounted with winding shafts (45) through bearing seats. Drying cotton strips (46) are wound on the two winding shafts (45).

2. A common-enclosed busbar with a dehumidification structure according to claim 1, characterized in that: The dehumidification assembly (3) also includes a fan (32). Two sets of fans (32) are installed on the top of the air inlet box (31) at the positions corresponding to the two pulleys (317). The drive shaft of the fan (32) passes through the inside of the drying box (34) and is fixed with a shaft (37). The shaft (37) rotates through the drying layer (36) and is fixedly connected to the pulley (317).

3. A common-enclosed busbar with a dehumidification structure according to claim 2, characterized in that: The drying box (34) has a cavity (39) located outside the drying layer (36), and an annular belt (38) is fixed to the top of the cavity (39). The annular belt (38) has two notches on its surface, and partitions (310) are fixed to the bottom of the two notches of the annular belt (38). The partitions (310) are slidably connected to the inner wall of the drying box (34) and the drying layer (36) respectively.

4. A common-enclosed busbar with a dehumidification structure according to claim 3, characterized in that: The top and bottom of the drying layer (36) are provided with perforated windows (311), and a baffle (312) is provided between the bottom of the drying layer (36) and the pulley (317). The drying layer (36) is fixed to the top of the baffle (312).

5. A common-enclosed busbar with a dehumidification structure according to claim 4, characterized in that: A connecting plate (315) is fixed to the bottom of the two partitions (310), and a vertical tube (316) is fixedly inserted into the surface of the connecting plate (315). The vertical tube (316) is fixedly inserted into the transmission belt (313), and the bottom of the transmission belt (313) extends out of the drying box (34). The bottom of the vertical tube (316) is fixedly connected to the horizontal tube (33).

6. A common-enclosed busbar with a dehumidification structure according to claim 5, characterized in that: A connecting channel (35) is fixedly connected between the air inlet box (31) and the drying box (34).

7. A common-enclosed busbar with a dehumidification structure according to claim 6, characterized in that: The winding assembly (4) also includes a transmission rod (41). The transmission rod (41) is rotatably mounted on both sides of the connecting channel (35) via bearings. The two ends of the transmission rod (41) are fixed with transmission bevel gears (42). The surface of the shaft (37) is fixed with a drive bevel gear (44). The transmission bevel gear (42) at one end of the transmission rod (41) meshes with the drive bevel gear (44).

8. A common-enclosed busbar with a dehumidification structure according to claim 7, characterized in that: The top of the take-up shaft (45) is fixedly mounted with a driven bevel gear (43) by an electric push rod. After the driven bevel gear (43) rises, it can mesh with the transmission bevel gear (42) at the other end of the transmission rod (41).

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