Low-voltage dense bus duct

Abstract

This invention discloses a low-voltage, high-density busbar trunking system, relating to the field of busbar trunking technology. It includes two busbar trunking bodies, each connected by bolts to two side guard plates. Two sealing plates (number 1) are bolted together between the two corresponding side guard plates. Two sealing plates (number 1) are located on either side between the two busbar trunking bodies. Two additional sealing plates (number 2) are fixedly connected to the top and bottom of the side guard plates. Through movable sealing gaskets that abut against the edges of sealing plates (number 1 and number 2), the system prevents inadequate sealing of the space between the two busbar trunking bodies under low-temperature conditions, ensuring the effectiveness of the seal. This prevents moisture from entering the space between the two busbar trunking bodies, preventing moisture from oxidizing and corroding the mating positions of the two sets of electrode plates, and thus avoiding situations where moisture causes a continuous increase in resistance and a decrease in insulation, affecting the service life of the electrode plates.

Description

Technical Field

[0001] This invention relates to the field of busbar technology, and more specifically, to a low-voltage, high-density busbar. Background Technology

[0002] Low-voltage high-density busbar trunking, as a core device for high-current transmission in low-voltage power distribution systems, is widely used in high-rise buildings, industrial plants, data centers, and other scenarios, serving as a crucial carrier for ensuring power distribution continuity. Existing busbar trunking systems mostly employ a segmented splicing structure. Two sections of the busbar trunking are enclosed by side guards and sealing plates to form a closed docking cavity. Internal electrode plates are cross-fitted to achieve a conductive path, and bolts are used to maintain electrode contact pressure. Sealing rings provide sealing protection for the cavity, resisting external dust and moisture erosion and ensuring stable operation of the conductive connection. The joint area, as the weakest link in the conductivity and protection of the entire line, directly determines the overall reliability and service life of the busbar trunking system.

[0003] However, existing busbar joints generally use a static bolt-tightening sealing structure, which cannot adapt to the complex operating conditions caused by environmental temperature differences and load fluctuations. If there are significant differences in the thermal expansion coefficients of the sealing plate, bolts, sealing rings, and electrode plates, the sealing rings will shrink and lose elasticity at low temperatures, and the bolt preload will decrease, making gaps easily formed on the sealing surface. External moisture will then continuously corrode the electrode mating surface, causing increased contact resistance and deterioration of insulation performance. During high-load operation, the heat generated at the electrode mating point increases dramatically, the sealing plate warps and deforms due to heat, the sealing ring ages faster at high temperatures, and the bolts become thermally relaxed, further aggravating sealing failure and insufficient contact pressure, ultimately forming a vicious cycle of heat generation and corrosion. This type of static structure cannot dynamically compensate for the sealing pressure across the entire temperature range, nor can it adjust the electrode clamping force in real time according to load changes. Long-term operation can easily lead to joint overheating and burning, insulation breakdown, and other faults, resulting in high maintenance costs and electrical safety hazards. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a low-voltage dense busbar trunking.

[0005] The technical solution is as follows: A low-voltage high-density busbar trunking includes two busbar trunking bodies. Each of the two busbar trunking bodies is fixedly connected to two side guard plates by bolts. A sealing plate 1 is fixedly connected to the two corresponding side guard plates by bolts. There are two sealing plates 1, which are placed vertically between the two busbar trunking bodies. The top and bottom of the multiple side guard plates are all fixedly connected to a sealing plate 2. There are two sealing plates 2, which are placed horizontally between the two busbar trunking bodies. Four electrode plates are fixedly connected inside each of the two busbar trunking bodies. The sides of the two busbar trunking bodies that are close to each other are provided with sealing components to prevent thermal expansion and contraction from affecting the sealing of the busbar trunking bodies by sealing plates 1 and 2. The sealing assembly includes two temperature sensing chambers disposed between two side guard plates on the same side. A sealing gasket for sealing the edges of sealing plate one and sealing plate two is fitted on the outer surface of each of the two busbar trunking bodies. A pressing assembly for pressing sealing plate one is rotatably connected to both sides of each of the two busbar trunking bodies. The clamping assembly includes two contact pads disposed on the outer side of the two sealing plates for pressing the sealing plates together, and clamping assemblies for clamping and bonding the two sets of electrode sheets on the side of the two sealing plates that are close to each other. The clamping assembly includes multiple sets of clamping plates disposed on both sides of the four electrode plates for clamping every two electrode plates.

[0006] Furthermore, the two sealing plates 1 and 2 completely seal the space between the two busbar trunking bodies. The two ends of the two sealing plates 1 and 2 respectively abut against the outer surface of the two busbar trunking bodies at their respective closest points. Sealing rings are affixed to the contact points between the two ends of the two sealing plates 1 and 2 and the two busbar trunking bodies. In addition, the upper and lower edges of the two sealing plates 1 press against the two side edges of the two sealing plates 2 respectively. The electrode plates in one busbar trunking body and the electrode plates in the other busbar trunking body are cross-attached to each other.

[0007] Furthermore, the sealing assembly also includes two air pipes fixedly connected to both sides of the temperature sensing chamber. The ends of the two air pipes away from the temperature sensing chamber pass through two side panels on the same side. The ends of the two air pipes passing through the side panels are fixedly connected to air chambers. The ends of the two air chambers away from the air pipes are fixedly connected to springs. The ends of the two springs near the air pipes are fixedly connected to pistons. The two pistons slide inside the two air chambers respectively. The ends of the two pistons away from the air pipes are fixedly connected to movable rods. The ends of the two movable rods away from the pistons are fixedly connected to movable frames. The ends of the two movable frames away from the movable rods are fixedly connected to the sealing gaskets.

[0008] Furthermore, the temperature sensing chamber is fitted outside the electrode sheet within the same busbar trunking, wherein the temperature sensing chamber does not directly contact the electrode sheet, and the temperature sensing chamber contains air. The sealing gasket consists of a frame and a rubber gasket, and the shape of the sealing gasket is adapted to the shape of the combination of two sealing plates one and two sealing plates two.

[0009] Furthermore, the clamping assembly also includes two lever frames rotatably connected to both sides of the busbar trunking. Each lever frame is fixedly connected to a lever plate by bolts. Two abutment pads are fixedly connected to the ends of the two lever plates near the sealing plate. Two inclined grooves are opened on the ends of the two lever plates away from the abutment pads. Pushing frames are fixedly connected to both movable frames.

[0010] Furthermore, the contact pad is in contact with the outer surface of the sealing plate, and the pushing frame consists of a protrusion and two sliding rods fixed on the upper and lower sides of the protrusion. The two sliding rods of the pushing frame slide inside the inclined groove.

[0011] Furthermore, the emergency assembly also includes two limiting plates located on the side panels close to each other. The two limiting plates are threadedly connected to the two adjacent sealing plates with adjusting rods. The upper and lower ends of the two limiting plates are rotatably connected with threaded rods. The two ends of the two threaded rods are fixedly connected with gears. Multiple clamping plates are threadedly connected between the two threaded rods. The upper and lower ends of the side panels close to each other of the two limiting plates are slidably connected with gear frames. Multiple gear frames mesh with adjacent gears. The two gear frames on the same limiting plate are fixedly connected to the side panels close to each other with magnetic blocks. The outer surfaces of the two limiting plates are fixedly connected with two electromagnetic blocks by bolts.

[0012] Furthermore, the threaded rod is provided with convex rings corresponding to multiple electrode plates, and the thread on the threaded rod is provided with multiple sets of thread grooves, wherein each set of thread grooves on the threaded rod has two grooves, and the two grooves in each set of the threaded rod are mirror-symmetrical about the convex rings of the threaded rod. Each set of clamping plates has two clamping plates, and the two clamping plates in each set are located on both sides of the adjacent electrode plates. The side of the two clamping plates that are close to each other is provided with convex pads. The two electromagnetic blocks located on the same limiting plate are respectively located between the two gear frames.

[0013] Based on the above, the beneficial effects of the low-voltage dense busbar trunking of the present invention are as follows: By using a movable sealing gasket that can abut against the edges of sealing plate one and sealing plate two, it is possible to prevent sealing plate one and sealing plate two from failing to seal the space between the two busbar trunkings under low temperature conditions. This ensures the sealing effectiveness of sealing plate one and sealing plate two, prevents moisture in the air from entering the space between the two busbar trunkings, and prevents moisture from oxidizing and corroding the docking position of the two sets of electrode plates. This also avoids situations where the resistance continues to soar and the insulation decreases after the plates become damp, which would affect the service life of the electrode plates. By pressing the sealing plate one with the contact pad, the problem of thermal deformation and warping of the sealing plate one, elastic decay of the sealing ring, and loosening of bolt preload when the two sets of electrode plates in the two busbar trunking are overheated can be addressed. This can lead to sealing failure, moisture intrusion and accelerated contact corrosion. It can ensure that the traditional static bolt tightening cannot adapt to thermal expansion and deformation. The temperature-linked active extrusion can dynamically compensate for the sealing and connection clamping force, while restraining the thermal deformation of the sealing plate one, avoiding permanent plastic damage, delaying the escalation of the fault, extending the service life of the joint, and reducing the frequency of operation and maintenance and electrical safety risks. By clamping the two sets of electrode plates at their mating positions with clamping plates, the stability of the two sets of electrode plates can be ensured. The clamping method using electromagnetic blocks allows for real-time adjustment of the clamping force based on the load voltage. Under high voltage, the contact pressure is increased to reduce contact resistance and heat generation. Under normal conditions, a reasonable amount of clamping is maintained to avoid long-term overpressure and plastic deformation of the contact surface, significantly improving the reliability of the conductive connection, extending the service life of the connector, and reducing maintenance costs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall components of the present invention; Figure 2 This is a three-dimensional schematic diagram of the side guard plate, sealing plate 1, limiting plate, electrode sheet and other components of the present invention; Figure 3 This is a three-dimensional schematic diagram of the busbar trunking, side guard plate, and electrode sheet components of the present invention; Figure 4 This is a three-dimensional schematic diagram of the side guard plate, sealing plate one, sealing plate two, sealing gasket and other components of the present invention; Figure 5 This is a three-dimensional schematic diagram of the components of the present invention, including the busbar trunking, electrode plates, temperature sensing chamber, and lever frame. Figure 6 This is a three-dimensional cross-sectional view of the overall components of the present invention; Figure 7 For the present invention Figure 6 Enlarged schematic diagram of component A in the middle; Figure 8 This is a three-dimensional schematic diagram of the lever frame, lever plate, sealing gasket, and other components of the present invention; Figure 9 This is a three-dimensional schematic diagram of the electrode sheet, clamping plate, threaded rod, and other components of the present invention. Figure 10 This is a three-dimensional schematic diagram of the electrode sheet, limiting plate, clamping plate, gear frame, and other components of the present invention; Figure 11 This is a three-dimensional schematic diagram of the gears, gear rack, electromagnetic block, and other components of the present invention.

[0015] The reference numerals in the accompanying drawings of this invention are as follows: 1. Busbar trunking; 2. Side guard plate; 3. Sealing plate one; 4. Sealing plate two; 5. Electrode plate; 61. Temperature sensing chamber; 62. Air tube; 63. Air chamber; 64. Spring; 65. Piston; 66. Movable rod; 67. Movable frame; 68. Sealing gasket; 71. Lever frame; 72. Lever plate; 73. Inclined groove; 74. Contact pad; 75. Push frame; 81. Limiting plate; 82. Adjusting rod; 83. Threaded rod; 84. Gear; 85. Clamping plate; 86. Gear frame; 87. Magnetizing block; 88. Electromagnetic block. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0017] The embodiments provided by the present invention will be described in detail below: like Figures 1 to 9 As shown, a low-voltage high-density busbar trunking includes two busbar trunking bodies 1. Two side guard plates 2 are fixedly connected between the two busbar trunking bodies 1 by bolts. A sealing plate 3 is fixedly connected between the two corresponding side guard plates 2 by bolts. There are two sealing plates 3. The two sealing plates 3 are placed vertically between the two busbar trunking bodies 1. The top and bottom of the multiple side guard plates 2 are fixedly connected to a sealing plate 4. There are two sealing plates 4. The two sealing plates 4 are placed horizontally between the two busbar trunking bodies 1. Four electrode plates 5 are fixedly connected inside the two busbar trunking bodies 1. The side of the two busbar trunking bodies 1 that is close to each other is provided with a sealing component to avoid the sealing of the sealing plates 3 and 4 by thermal expansion and contraction. It should be noted that, as Figure 4 As shown, two sealing plates 3 and two sealing plates 4 completely seal the space between the two busbar trunking 1s. The two ends of the two sealing plates 3 and 4 respectively abut against the outer surfaces of the two busbar trunking 1s at their respective closest points. Sealing rings are fitted at the contact points between the two sealing plates 3 and 4 and the two busbar trunking 1s to ensure effective sealing of the space between the two busbar trunking 1s when the sealing plates 3 and 4 abut against the busbar trunking 1s. In addition, the upper and lower edges of the two sealing plates 3 press against the two side edges of the two sealing plates 4 respectively. The sealing plates 4 are fixed to the side guard plate 2 by bolts. The two sealing plates 3 can also perform secondary compression and fixation on the sealing plates 4, ensuring that the sealing plates 4 are more stably attached to the two busbar trunking 1s. The electrode plates 5 in one busbar trunking 1 and the electrode plates 5 in the other busbar trunking 1 are cross-attached.

[0018] The sealing assembly includes two temperature-sensing chambers 61 disposed between two side guard plates 2 on the same side. Air pipes 62 are fixedly connected to both sides of the temperature-sensing chambers 61. The ends of the two air pipes 62 away from the temperature-sensing chambers 61 pass through the two side guard plates 2 on the same side. Air chambers 63 are fixedly connected to the ends of the two air chambers 63 away from the air pipes 62. Pistons 65 are fixedly connected to the ends of the two springs 64 near the air pipes 62. The two pistons 65 slide inside the two air chambers 63 respectively. Movable rods 66 are fixedly connected to the sides of the two pistons 65 away from the air pipes 62. Movable frames 67 are fixedly connected to the ends of the two movable frames 67 away from the ends connected to the movable rods 66. A sealing gasket 68 is fixedly connected to the ends of the two movable frames 67 away from the ends connected to the movable rods 66.

[0019] It should be noted that there are two sealing components, which are respectively located at the two busbar trunking 1s that are close to each other. The sealing component described above is only located on one side. The temperature sensing chamber 61 is rectangular and made of aluminum alloy with a high thermal conductivity. The temperature sensing chamber 61 is fitted on the outside of the electrode plate 5 inside the same busbar trunking 1, so as to be better affected by the temperature generated by the operation of the electrode plate 5. The temperature sensing chamber 61 does not directly contact the electrode plate 5. The temperature sensing chamber 61 stores air. When the heat generated by the electrode plate 5 is radiated to the temperature sensing chamber 61, the thermal motion of the air molecules in the temperature sensing chamber 61 intensifies, the pressure rises and thermal expansion occurs. The sealing gasket 68 is composed of a frame and a rubber gasket. The shape of the sealing gasket 68 is adapted to the shape of the combination of the two sealing plates 3 and the two sealing plates 4, so as to effectively abut against the two sealing plates 3 and the two sealing plates 4 for sealing.

[0020] Specifically, when connecting the two busbar trunking 1, the two busbar trunking 1 are first brought close together, and the two sets of electrode plates 5 inside each busbar trunking 1 are staggered and aligned. Then, the sealing plate 1 3 and the sealing plate 2 4 are fixed to the outer surface of the side guard plate 2 with bolts. At the same time, the two ends of the two sealing plates 1 3 and the two sealing plates 2 4 respectively abut against the surfaces of the two busbar trunking 1 at their respective close ends, thereby achieving the connection of the two busbar trunking 1. The sealing rings of the sealing plates 1 3 and the sealing plate 2 4 are in contact with the busbar trunking 1, which can ensure that the electrode plates 5 located between the two busbar trunking 1 are in a sealed state, thereby avoiding the influence of the external environment after the two sets of electrode plates 5 are connected and energized, that is, avoiding dust pollution or water vapor corrosion.

[0021] When the two sets of electrode plates 5 are properly connected, the resistance at the connection point is the same as the resistance of a section of electrode plate 5 located inside the busbar trough 1. This means that the connection point between the two sets of electrode plates 5 does not generate heat or generates very little heat. However, in low-temperature environments, the sealing rings of sealing plates 3 and 4, as well as the fixing bolts, will experience shrinkage. The shrinking sealing rings will prevent a tight fit with the busbar trough 1, and the bolts will experience a decrease in preload, leading to poor contact. This results in a loose connection between sealing plates 3 and 4 and the busbar trough 1, further complicating the connection between sealing plates 3 and 4. If a gap appears between the two busbar trunking 1 and the busbar trunking 1, some external air will enter the space between the two busbar trunking 1. If some moisture enters the space between the two busbar trunking 1, it will cause the docking position of the two sets of electrode plates 5 to become damp and oxidized. The environmental temperature difference that causes this is usually due to the following situations: day and night temperature difference. For example, during the day, when the conductor heating busbar interlayer and temperature sensing chamber 61 are fully loaded, the temperature rises by 30~40℃. At night, when the busbar stops heating and the metal shell dissipates heat rapidly, the temperature of the interlayer drops sharply by 15~25℃. The temperature sensing chamber 61 is in close contact with the metal shell of the interlayer. The air in the temperature sensing chamber 61 cools down and contracts synchronously, generating negative pressure.

[0022] In response, when the temperature of the space between the two busbar trunking bodies 1 is low, i.e., when the internal temperature of the temperature sensing chamber 61 is too low, the volume of the air inside the temperature sensing chamber 61 will gradually decrease as the air temperature decreases. According to the ideal gas law PV=nRTn, where the amount of gas substance and the constant R remain constant, when the temperature T decreases, the gas pressure P and volume V decrease simultaneously. The outer wall of the temperature sensing chamber 61 contacts the low-temperature space of the busbar trunking interlayer. The air inside the temperature sensing chamber 61 cools down, the thermal motion of air molecules weakens, and the internal air pressure is lower than the ambient air pressure of the busbar trunking interlayer outside the cylinder, creating a pressure difference between the inside and outside. Under the action of the external atmospheric pressure, the two pistons 65 will be pushed to move towards the side closer to the air pipe 62 inside the two air chambers 63. Since the inner wall of the temperature sensing chamber 61 is polished, the sliding resistance of the pistons 65 is small. The two moving pistons 65 will stretch the corresponding springs 64 respectively. During the movement of the two pistons 65, they will drive the two movable rods 66 to move synchronously. The two movable rods 66 will drive the sealing gaskets 68 towards the combination of sealing plate 1 3 and sealing plate 2 4 through the two movable frames 67 respectively. When the sealing gasket 68 moves to the edge position, the rubber gasket of the sealing gasket 68 will abut against the edge position of the combination of sealing plate 3 and sealing plate 4. When the temperature is too low, the sealing gasket 68, which is movable and can abut against the edge position of sealing plate 3 and sealing plate 4, can prevent sealing plate 3 and sealing plate 4 from not sealing the space between the two busbar trunking 1 properly under low temperature conditions. This ensures the sealing effectiveness of sealing plate 3 and sealing plate 4, prevents moisture in the air from entering the space between the two busbar trunking 1, and prevents moisture from oxidizing and corroding the docking position of the two sets of electrode plates 5. This also avoids situations where the resistance continues to rise and the insulation decreases after being damp, which affects the service life of the electrode plates 5.

[0023] like Figure 1 , Figure 2 , Figures 4 to 9 As shown, both sides of the two busbar trunking bodies 1 are rotatably connected to a clamping assembly for clamping the sealing plate 3. The clamping assembly includes two lever frames 71 rotatably connected to both sides of the busbar trunking body 1. Each lever frame 71 is fixedly connected to a lever plate 72 by bolts. Each lever plate 72 has a contact pad 74 fixedly connected to the end of each lever plate 72 near the sealing plate 3. Each lever plate 72 has two inclined grooves 73 at the end away from the contact pad 74. Each movable frame 67 is fixedly connected to a pushing frame 75.

[0024] It should be noted that the contact pad 74 is in contact with the outer surface of the sealing plate 3, and the pusher 75 is composed of a protrusion and two slide rods fixed on the upper and lower sides of the protrusion. The two slide rods of the pusher 75 slide inside the inclined groove 73.

[0025] Specifically, after the two sets of electrode plates 5 are connected and energized, heat will inevitably be generated during power transmission. Because the electrode plates 5 located within the busbar trunking 1 are a continuous and complete structure with uniform and low resistance, however, if the two electrode plates 5 do not fit tightly at the connection point, the resistance between the two sets of electrode plates 5 will be several times that of the electrode plates 5 within the busbar trunking 1. According to Joule's law, a large amount of additional heat will be generated under high current conditions, leading to excessive heat in the space between the two busbar trunking 1 sections. This overheating will also cause the bolts of the sealing plate 1 3 and sealing plate 2 4 to become... Due to thermal expansion, the different coefficients of thermal expansion can cause the bolts to loosen. The heat generated by the electrode 5 is transferred to the temperature sensing chamber 61. When the temperature sensing chamber 61 is heated, the air inside it expands. This expanded air enters the two air chambers 63 through the two air pipes 62. The air filling the two air chambers 63 pushes the two pistons 65 towards the side of the spring 64. Then, the spring 64 is compressed by the moving pistons 65. The two pistons 65 then drive the two movable rods 66 away from the air pipes 62. Rod 66 will drive the sealing gasket 68 to move away from the edges of sealing plate 3 and sealing plate 4 via two movable frames 67. During this process, the movement of the two movable frames 67 will drive the two pushing frames 75 to move synchronously. Then, under the sliding action of the sliding rods of the two pushing frames 75 inside the inclined groove 73, the two lever plates 72 will rotate around the rotational connection between the two lever frames 71 and the busbar trough 1. The side of the two lever plates 72 near the contact pad 74 will move closer to the outer surface of sealing plate 3. Then, the two lever plates 72 will drive the two contact pads 74 to move towards the outer surface of sealing plate 3. The pad 74 presses against the sealing plate 3, allowing it to be pressed tightly against both sides of the two busbar trunking bodies 1. By pressing the sealing plate 3 with the pad 74, the sealing plate 3 can be prevented from failing to seal when the two sets of electrode plates 5 in the two busbar trunking bodies 1 are overheated, and the problem of moisture intrusion accelerating contact corrosion can be avoided. This ensures that the traditional static bolt fastening cannot adapt to the limitations of thermal expansion and deformation. The temperature-linked active extrusion can dynamically compensate for the sealing and connection clamping force, while restraining the thermal deformation of the sealing plate 3, avoiding permanent plastic damage, delaying the escalation of faults, extending the service life of the joint, and reducing the frequency of maintenance and electrical safety risks.

[0026] It should be noted that the pressing component and the sealing component are linked together. When the temperature is too low, the sealing component can seal the edges of the sealing plate 3 and the sealing plate 4 with the sealing gasket 68. When the temperature is too high, the sealing component can press the sealing plate 3 with the contact pad 74 of the pressing component. When the two sealing plates 3 are pressed, the sealing plate 4 can be pressed simultaneously, which can also prevent the thermal deformation of the sealing plate 4.

[0027] like Figure 2 , Figure 6, Figures 9 to 11 As shown, each of the two sealing plates 3 has a clamping assembly on its side that is close to each other, which is used to clamp and fit the two sets of electrode plates 5. The clamping assembly includes two limiting plates 81 on the side that is close to each other of the two side guard plates 2. The two limiting plates 81 are threadedly connected to the two adjacent sealing plates 3 with adjusting rods 82. The upper and lower ends of the two limiting plates 81 are rotatably connected with threaded rods 83. The two ends of the two threaded rods 83 are fixedly connected with gears 84. Multiple clamping plates 85 are threadedly connected between the two threaded rods 83. The upper and lower ends of the side that is close to each other of the two limiting plates 81 are slidably connected with gears 86. The multiple gears 86 are respectively meshed with the adjacent gears 84. The two gears 86 on the same limiting plate 81 are fixedly connected to the side that is close to each other with magnetic blocks 87. The outer surfaces of the two limiting plates 81 are fixedly connected with two electromagnetic blocks 88 by bolts.

[0028] It should be noted that the threaded rod 83 is provided with convex rings corresponding to multiple electrode plates 5, which are used to limit the position of the clamping plate 85 on the threaded rod 83. The thread on the threaded rod 83 is provided with multiple sets of thread grooves, and each set of thread grooves on the threaded rod 83 is provided with two grooves. The two thread grooves in each set of the threaded rod 83 are mirror-symmetrical about the convex rings of the threaded rod 83. There are two clamping plates 85. The two clamping plates 85 in each set are located on both sides of the adjacent electrode plates 5. The side of the two clamping plates 85 that are close to each other is provided with convex pads, which are used to softly contact the electrode plates 5 to avoid damage and to achieve an insulating clamping effect. The two electromagnetic blocks 88 located on the same limiting plate 81 are respectively located between the two gears 86.

[0029] Specifically, after the two electrode plates 5 of the two busbar trunking bodies 1 are connected, and then the busbar trunking bodies 1 are energized, power is transmitted through the electrode plates 5. At this time, the electromagnetic block 88 is also energized simultaneously. After being energized, the electromagnetic block 88 generates magnetism, which in turn attracts the magnetic block 87. This causes the magnetic block 87 to drive the gear frame 86 to slide on the limiting plate 81 towards the side closer to the electromagnetic block 88. During the movement of the gear frame 86, the gear 84 is driven to rotate, which in turn drives the threaded rod 83 to rotate. The rotating threaded rod 83 then drives the threaded connection thereto. Two clamping plates 85 in each group approach each other, clamping the two sets of electrode plates 5 at their mating positions. This clamping of the two sets of electrode plates 5 by the clamping plates 85 ensures the stability of the mating. The clamping method using electromagnetic blocks 88 adjusts the clamping force in real time according to the load voltage. Under high voltage, the contact pressure is increased to reduce contact resistance and heat generation. Under normal conditions, a reasonable amount of pressure is maintained to avoid long-term overpressure and plastic deformation of the contact surface, significantly improving the reliability of the conductive connection, extending the service life of the connector, and reducing maintenance costs.

[0030] It should be noted that the higher the voltage, the tighter the magnetic attraction of the electromagnetic block 88 to the magnetic block 87, which in turn enables the gear 84 to remain stable through the gear frame 86. The gear 84, through the threaded rod 83, makes the clamping of the two sets of electrode plates 5 by the multiple clamping plates 85 relatively stable, thus ensuring the stability of the clamping of the two sets of electrode plates 5 at their docking positions.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-voltage dense busbar trunking, comprising two busbar trunking bodies (1), each of the two busbar trunking bodies (1) being bolted together with two side guard plates (2), and two corresponding side guard plates (2) being bolted together with a sealing plate (3), wherein two sealing plates (3) are provided, the two sealing plates (3) are placed vertically between the two busbar trunking bodies (1), and the top and bottom of multiple side guard plates (2) are all bolted together with a sealing plate (4), wherein two sealing plates (4) are provided, the two sealing plates (4) are placed horizontally between the two busbar trunking bodies (1), and four electrode plates (5) are bolted together inside each of the two busbar trunking bodies (1), characterized in that, Both sides of the two busbar trunking (1) that are close to each other are provided with sealing components to prevent thermal expansion and contraction from affecting the sealing of the busbar trunking (1) by sealing plate one (3) and sealing plate two (4); The sealing assembly includes two temperature-sensing chambers (61) disposed between two side guards (2) on the same side, and sealing gaskets (68) for sealing the edges of sealing plate one (3) and sealing plate two (4) are fitted on the outer surfaces of the two busbar trunking bodies (1). A pressing assembly for pressing sealing plate one (3) is rotatably connected to both sides of the two busbar trunking bodies (1). The clamping assembly includes two abutting pads (74) disposed on the outside of the two sealing plates (3) for pressing the sealing plates (3) against each other, and clamping assemblies for clamping and bonding the two sets of electrode sheets (5) on the side of the two sealing plates (3) that are close to each other. The clamping assembly includes multiple clamping plates (85) arranged on both sides of the four electrode plates (5) for clamping each pair of electrode plates (5).

2. The low-voltage dense busbar trunking according to claim 1, characterized in that, Two sealing plates (3) and two sealing plates (4) completely seal the space between the two busbar trunking bodies (1). The two ends of the two sealing plates (3) and two sealing plates (4) respectively contact the outer surface of the two busbar trunking bodies (1) at one end. The two ends of the two sealing plates (3) and two sealing plates (4) are fitted with sealing rings at the contact points between the two busbar trunking bodies (1). In addition, the upper and lower edges of the two sealing plates (3) press against the two side edges of the two sealing plates (4). The electrode sheet (5) in one busbar trunking body (1) and the electrode sheet (5) in the other busbar trunking body (1) are cross-fitted.

3. The low-voltage dense busbar trunking according to claim 1, characterized in that, The sealing assembly also includes two air pipes (62) fixedly connected to both sides of the temperature sensing chamber (61). The ends of the two air pipes (62) away from the temperature sensing chamber (61) pass through two side guards (2) on the same side. The ends of the two air pipes (62) passing through the side guards (2) are fixedly connected to air chambers (63). The ends of the two air chambers (63) away from the air pipes (62) are fixedly connected to springs (64). The ends of the two springs (64) near the air pipes (62) are fixedly connected to pistons (65). The two pistons (65) slide inside the two air chambers (63) respectively. The side of the two pistons (65) away from the air pipes (62) is fixedly connected to movable rods (66). The ends of the two movable rods (66) away from the pistons (65) are fixedly connected to movable frames (67). The ends of the two movable frames (67) away from the movable rods (66) are fixedly connected to the sealing gaskets (68).

4. The low-voltage dense busbar trunking according to claim 3, characterized in that, The temperature sensing chamber (61) is fitted on the outside of the electrode sheet (5) inside the same busbar trunking (1). The temperature sensing chamber (61) does not directly contact the electrode sheet (5). The temperature sensing chamber (61) contains air. The sealing gasket (68) is composed of a frame and a rubber gasket. The shape of the sealing gasket (68) is adapted to the shape of the combination of the two sealing plates (3) and the two sealing plates (4).

5. The low-voltage dense busbar trunking according to claim 3, characterized in that, The clamping assembly also includes two lever frames (71) rotatably connected to both sides of the busbar trunking (1). Each lever frame (71) is fixedly connected to a lever plate (72) by bolts. Two abutment pads (74) are fixedly connected to the ends of the two lever plates (72) near the sealing plate (3). Two inclined grooves (73) are opened at the ends of the two lever plates (72) away from the abutment pads (74). Each movable frame (67) is fixedly connected to a pushing frame (75).

6. The low-voltage dense busbar trunking according to claim 5, characterized in that, The contact pad (74) is in contact with the outer surface of the sealing plate (3). The pusher (75) consists of a protrusion and two slide rods fixed on the upper and lower sides of the protrusion. The two slide rods of the pusher (75) slide inside the inclined groove (73).

7. The low-voltage compact busbar trunking according to claim 1, characterized in that, The emergency assembly also includes two limiting plates (81) located on the side of the two side guards (2) that are close to each other. The two limiting plates (81) are threadedly connected to the two adjacent sealing plates (3) with adjusting rods (82). The upper and lower ends of the two limiting plates (81) are rotatably connected with threaded rods (83). The two ends of the two threaded rods (83) are fixedly connected with gears (84). Multiple clamping plates (85) are threadedly connected between the two threaded rods (83). The upper and lower ends of the side of the two limiting plates (81) that are close to each other are slidably connected with gear frames (86). Multiple gear frames (86) mesh with the adjacent gears (84) respectively. The two gear frames (86) on the same limiting plate (81) are fixedly connected to the side of the two gear frames (86) that are close to each other with magnetic blocks (87). The outer surfaces of the two limiting plates (81) are fixedly connected with two electromagnetic blocks (88) by bolts.

8. The low-voltage dense busbar trunking according to claim 7, characterized in that, The threaded rod (83) is provided with a convex ring corresponding to multiple electrode plates (5). The thread on the threaded rod (83) is provided with multiple sets of thread grooves. Each set of thread grooves on the threaded rod (83) is provided with two, and each set of two thread grooves on the threaded rod (83) is mirror symmetrical about the convex ring of the threaded rod (83). Each set of clamping plates (85) is provided with two, and the two clamping plates (85) in each set are located on both sides of the adjacent electrode plates (5). The side of the two clamping plates (85) that are close to each other is provided with a convex pad. The two electromagnetic blocks (88) located on the same limiting plate (81) are respectively located between the two gears (86).

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