Energy-saving and environment-friendly cable branch box

Abstract

This invention belongs to the technical field of cable branch boxes, and particularly relates to an energy-saving and environmentally friendly cable branch box, including a branch box assembly, a water collection assembly, a water-cooling heat dissipation assembly, and an anti-back-pull assembly. The branch box assembly is used to divide the incoming main cable into multiple branch cables. The water collection assembly is used to automatically increase the diameter of the water collection tank during rain. The water-cooling heat dissipation assembly is used to cool the inside of the box. The anti-back-pull assembly is used to prevent the main cable and branch cables from being pulled back into the cable trench, thus avoiding loosening and poor connection due to the pull. The anti-back-pull assembly, located at the insertion hole at the bottom of the box, can effectively prevent the plugs of the main cable or branch cables from becoming loose or poorly connected due to the unavoidable pulling during construction in the cable trench, ensuring the normal operation of the cable branch box.

Description

Technical Field

[0001] This invention belongs to the field of cable branch box technology, and particularly relates to an energy-saving and environmentally friendly cable branch box. Background Technology

[0002] Cable distribution boxes (also known as cable junction boxes) are one of the key pieces of equipment in modern urban power grid construction, especially in areas with high cable penetration rates. They are typically installed outdoors in streets, residential areas, industrial plants, and other locations as node connection devices for cable lines, replacing traditional overhead line branching methods and improving power supply reliability and safety.

[0003] With the advancement of urban power grid transformation, cable branch boxes have become an important tool for optimizing power distribution network structure. Their main function is to divide the main cable line into multiple branches to meet the power needs of different areas or users.

[0004] Some existing cable distribution boxes utilize rainwater or snowmelt for internal water cooling; however, the cooling effect is poor, and the efficiency of utilizing or receiving rainwater or snowmelt is low. Therefore, it is necessary to improve the water cooling structure to enhance both heat dissipation and rainwater reception efficiency. Simultaneously, effectively improving the rainwater filtration structure is also essential.

[0005] If the cable distribution box is located in a humid southern or coastal area, the humid air entering the box can easily form water droplets, leading to short circuits or reduced insulation strength. Therefore, distribution boxes in these areas need dehumidification capabilities. However, existing dehumidification distribution boxes consume electricity, resulting in poor energy efficiency and environmental friendliness. Utilizing rainwater or snowmelt for water-cooled heat dissipation to dehumidify the air entering the box could effectively achieve energy savings.

[0006] When workers are working in the cable trench, the cables in the existing cable branch box will inevitably be pulled, which will cause the cable joints in the branch box to loosen and thus cause the cables to become loose.

[0007] This invention designs an energy-saving and environmentally friendly cable branch box to solve the above problems. Summary of the Invention

[0008] Based on this, it is necessary to address the existing problems of current cable distribution boxes by providing an energy-saving and environmentally friendly cable distribution box. This box utilizes a water-collecting component to improve the efficiency of rainwater collection during rainfall. Simultaneously, the invention employs a water-cooled heat dissipation component to effectively cool the box interior using the rainwater in the collection tank. Furthermore, the air intake dehumidification component uses the low temperature generated on the outside of the heat absorption pipe in the water-cooled heat dissipation component to effectively dehumidify the air about to enter the box. This prevents humid air from entering the box in damp climates, rainy southern regions, or coastal areas, thus avoiding the formation of water droplets that could lead to short circuits or reduced insulation strength.

[0009] The above objectives are achieved through the following technical solutions: An energy-saving and environmentally friendly cable branch box, used to optimize the power distribution network structure, includes: A branch box assembly is used to divide the incoming main cable into multiple branch cables. The branch box includes a box body with a door at the front opening. The box body has a transmission space and a branch space distributed from top to bottom. A bucket-shaped water collection trough is provided at the top of the transmission space. A photovoltaic panel electrically connected to a battery in the transmission space and a controller electrically connected to the battery are provided above the water collection trough.

[0010] The water collection component, located at the top of the transmission space and electrically connected to the controller, is used to automatically increase the diameter of the water collection tank when it rains.

[0011] The water-cooled heat dissipation component installed in the branch space is used to dissipate heat from the box with water. The water-cooled heat dissipation component has the structural features of using rainwater in the water collection tank to remove heat from the box and filtering and automatically discharging the incoming rainwater.

[0012] The exhaust heat dissipation components and several air intake dehumidification components are respectively set on both sides of the box body for air cooling heat dissipation inside the box body. The air intake dehumidification components have the structural feature of dehumidifying the air about to enter the box body to avoid water vapor condensation inside the box body due to the temperature difference between day and night.

[0013] The anti-pullback assembly, located at the cable socket at the bottom of the enclosure, is used to prevent the main cable and branch cable from being pulled back into the cable trench, thus avoiding loosening and poor connection between the main cable and branch cable due to the pullback.

[0014] In one embodiment, the bottom of the housing is provided with a base for fixing the housing to the cable trench wellhead by bolts. The wall of the water collection tank has a limiting hole for limiting the water level, a drain hole for draining water, and a water supply hole for supplying water to the water-cooled heat dissipation components. A first drain pipe and a second drain hole are respectively provided at the limiting hole and the drain hole for draining water out of the housing. A solenoid valve electrically connected to the controller and the battery is provided on the second drain pipe. A first temperature sensor and a second temperature sensor electrically connected to the controller are respectively provided in the water collection tank and the branch space. An insulator is provided with a mounting frame, on which a branch connector is provided to divide the main cable into multiple branch cables. A grid plate is provided in the branch space to isolate the main cable, branch cables, and related electrical components from the water-cooled heat dissipation components. A rain sensor electrically connected to the controller is provided at the upper edge of the photovoltaic panel. A first rotating sleeve is provided on the lower side of the photovoltaic panel. A column is rotatably installed in the first rotating sleeve. The column is installed on a bracket above the extrusion groove. A locking screw that mates with the column is threaded onto the first rotating sleeve. A slag-blocking net is provided in the opening of the water collection tank to block large-sized slag.

[0015] In one embodiment, the water receiving assembly includes an elastic membrane surrounding the edge of the water collection tank, four hollow elastic spiral strips connected to the outside of the elastic membrane and respectively disposed at the four corners of the extrusion groove to cause the elastic membrane to fold outward, and four guide sleeves disposed on the outside of the water collection tank and corresponding to the elastic spiral strips. A chain with its upper end moving linearly along the oblique edge of the water collection tank is slidably disposed inside the guide sleeve and the corresponding elastic spiral strip. The chain has the characteristic of bending upward from its straight state without bending downward. A sprocket driven by a third motor is disposed on the guide sleeve and engages with the chain and is disposed below the middle of the water collection tank.

[0016] In one embodiment, the chain includes several pairs of inner chains, and an outer chain plate is hinged between adjacent inner chain plates on the same side by two pins. A roller sleeve that cooperates with a sprocket is rotatably disposed on the pin. Two limiting pins are symmetrically disposed on the inner sides of both ends of the outer chain plate. The limiting pins slide around the corresponding end pin in the limiting groove on the outer side of the corresponding end inner chain plate.

[0017] In one embodiment, a first pulley is provided on the shaft of the sprocket. The first pulley is connected to a second pulley provided on a guide sleeve via a synchronous belt. A fourth gear is provided on the shaft of the second pulley. The fourth gear meshes with a sixth gear provided on the guide sleeve via a fifth rotating shaft. The end of the fifth rotating shaft is provided with a sixth gear. The sixth gear meshes with a seventh gear on the output shaft of a third motor.

[0018] In one embodiment, the water-cooled heat dissipation assembly includes a water storage tank located at the bottom of the branch space and a pipe network located on three sides of the branch space. The water storage tank is wrapped with an insulation layer. The upper end of the water storage tank is provided with an exhaust pipe for venting air out of the tank and a water supply pipe that connects the exhaust pipe to a water supply hole on a water collection tank. The water supply pipe is provided with a cleaning structure for filtering dust in rainwater and automatically cleaning sludge. Two guide rods inside the water storage tank have float plugs that slide vertically to switch the water supply pipe. The return water pipe and the suction water pipe at the upper and lower ends of the pipe network are respectively connected to the water storage tank and the water collection tank. The lower end of the suction water pipe is always inserted below the water surface in the water storage tank. A water pump is provided on the suction water pipe. Vertical heat absorption pipes are evenly distributed along the three sides of the branch space in the pipe network. Several second spiral strips are evenly arranged circumferentially on the inner wall of the heat absorption pipe.

[0019] In one embodiment, the cleaning component includes a U-shaped recess on the water inlet pipe, a fine filter screen is installed inside the water tank end of the recess, a flow sensor is installed at the water collection tank end of the recess, a sludge collection tank is installed at the bottom of the recess, a drain pipe for discharging sludge out of the tank is installed at the bottom of the sludge collection tank, a threaded sleeve is installed on the outer side of the recess and is internally connected to and opposite the sludge collection tank, a first rotating shaft is internally threaded on the threaded sleeve, the first rotating shaft is rotatably connected to a blockage switch of the drain pipe that slides vertically in the sludge collection tank, and a first spiral strip is installed at the lower end of the first rotating shaft. The upper end of the threaded sleeve is rotatably provided with a second rotating sleeve that slides axially with the first rotating shaft. A fixed sleeve is provided in the recessed part through a fixed rod. A third rotating shaft is rotatably provided in the fixed sleeve. A scraper and a third gear are respectively provided at the upper and lower ends of the third rotating shaft. A rubber strip that cooperates with a fine filter screen is provided at the upper end of the scraper. A second rotating shaft is rotatably provided in the round hole on the recessed part. The second rotating shaft is connected to a first motor outside the water inlet pipe. The second rotating shaft is provided with a second gear that meshes with the third gear. A first gear that meshes with the gear ring on the second rotating sleeve is provided on the second rotating shaft.

[0020] In one embodiment, the anti-backlash assembly includes a flexible ball cup and a protective sleeve that mates with the main cable or branch cable. The flexible ball cup bolt and clamping ring are located at the cable socket at the bottom of the branch space. The flexible ball cup has a circular hole in the middle that allows the main cable or branch cable to pass through from bottom to top and is clamped to the main cable or branch cable. The protective sleeve slides vertically in the cable socket. The upper and lower ends of the protective sleeve are respectively provided with a spherical annular protrusion that mates with the flexible ball cup and a flared opening that allows the main cable or branch cable to be easily inserted from bottom to top. A return spring is connected between the flared opening and the bottom of the housing so that the spherical annular protrusion abuts against the bottom of the branch space.

[0021] In one embodiment, the exhaust heat dissipation assembly includes a cross-shaped structure disposed in the exhaust vent on one side of the branch space. A fourth rotating shaft is rotatably disposed in the circular hole in the middle of the cross-shaped structure. An exhaust fan is disposed at one end of the fourth rotating shaft, and the other end of the fourth rotating shaft is connected to a second motor on the cross-shaped structure. A dustproof net is disposed inside the outer end of the exhaust vent.

[0022] In one embodiment, the air intake dehumidification assembly includes an air intake pipe disposed on the side wall of the housing and connecting the inside and outside of the housing. Dust filter screens and dehumidification pipes are respectively disposed at both ends of the air intake pipe. The dehumidification pipe is fitted onto a corresponding heat absorption pipe and forms an annular space with the heat absorption pipe. The lower end of the dehumidification pipe is provided with a sloping bottom to facilitate the collection of water droplets. The lowest part of the sloping bottom is provided with a third drain pipe to discharge water droplets to the outside of the housing. The inner diameter of the third drain pipe is much smaller than the inner diameter of the dehumidification pipe and the air intake pipe.

[0023] The beneficial effects of this invention are: 1. In this invention, the water collection component set on the top of the box can unfold the elastic membrane set around the water collection tank when it rains, so as to effectively increase the diameter of the water collection tank, thereby effectively improving the efficiency and capacity of the water collection tank to collect rainwater. At the same time, it reduces the impact of the water collection efficiency of the water collection tank on the shading formed by the top photovoltaic panel.

[0024] 2. The water-cooled heat dissipation component of this invention allows rainwater collected by the water collection component to flow through heat-absorbing pipes in a pipe network located near the inner wall of the tank, effectively cooling the air surrounding the heat-absorbing pipes. The second spiral slats on the inner wall of the heat-absorbing pipes effectively increase the heat absorption area of ​​the flowing rainwater, thereby achieving efficient cooling of the tank. The cleaning structure on the water inlet pipe of this invention, used to guide rainwater from the collection tank into the water tank, effectively filters and retains dust and sediment in the rainwater. When the filter screen in the cleaning structure becomes clogged due to long-term use, it self-cleans the filter screen and discharges the sediment accumulated in the recessed part of the water inlet pipe and the debris cleaned from the filter screen, thus achieving effective filter screen cleaning.

[0025] 3. The air intake dehumidification component installed on the side wall of the box in this invention effectively filters the humid air entering the box and at the same time utilizes the low temperature outside the heat absorption pipe in the water-cooled heat dissipation component to effectively dehumidify the humid air about to enter the box. This avoids the humid air in rainy and humid areas in the south or coastal areas from directly entering the box and condensing into water droplets when the temperature difference between day and night is large, which could lead to short circuits or reduced insulation strength inside the box.

[0026] 4. The anti-pull-back component installed at the bottom socket of the box in this invention can effectively prevent the plug of the main cable or branch cable from becoming loose or disconnected due to the unavoidable pulling during construction in the cable trench, thus ensuring the normal operation of the cable branch box. Attached Figure Description

[0027] Figure 1 This is an overall schematic diagram of the invention; Figure 2 This is a schematic diagram of the open state of the present invention; Figure 3 These are two sectional views of the present invention; Figure 4 This is a cross-sectional view of the top structure of the present invention; Figure 5 This is a cross-sectional view of the water receiving assembly; Figure 6 This is a schematic diagram of a chain structure; Figure 7 This is the first cross-sectional view of the water-cooling heat dissipation component; Figure 8 This is a top sectional view of the present invention; Figure 9 This is a cross-sectional view of the exhaust and heat dissipation components; Figure 10 This is a cross-sectional view of the air intake dehumidification component and the heat absorption pipe in operation; Figure 11 This is a cross-sectional view of the anti-pullback component; Figure 12 This is a schematic diagram of the box structure in the branch box; Figure 13 This is a schematic diagram of the pipe network structure in a water-cooled heat dissipation component; Figure 14 This is a cross-sectional view of the cleaning structure on the water supply pipe; Figure 15 It is a partial sectional view of the cleaned structure; Labels in the diagram: 100. Branch box assembly; 101. Box body; 102. Branch space; 103. Cable socket; 104. Vent; 105. Transmission space; 106. Water collection tank; 107. Limiting hole; 108. Water supply hole; 109. Drain hole; 110. Grating plate; 111. Base; 112. Slag net; 113. Battery; 114. Controller; 115. First temperature sensor; 116. Second temperature sensor; 117. First drain pipe; 118. Second drain pipe; 119. Solenoid valve; 120. Insulator; 121. Mounting bracket; 122. Branch connector; 123. Main cable; 124. Branch cable; 126. Bracket; 127. Column; 128. First rotating sleeve; 129. Locking screw; 130. Photovoltaic panel; 131. Box door; 200. Anti-reverse pull-back assembly; 201. Elastic ball cup; 202. Pressure ring; 203. Protective sleeve; 204. Trumpet mouth; 205. Spherical annular protrusion; 206. Return spring; 300. Water-cooled heat dissipation assembly; 301. Water storage tank; 303. Guide rod; 304. Float plug; 305. Water inlet pipe; 306. Recessed part; 307. Sludge collection tank; 308. Sludge drain pipe; 309. Screw sleeve; 310. First rotating shaft; 311. Block; 312. First spiral strip; 313. Second rotating sleeve; 314. Gear ring; 315. First gear; 316. Second rotating shaft; 317. First motor; 318. Second gear; 319. Third gear; 320. Third shaft; 321. Fixing sleeve; 322. Fixing rod; 323. Scraper; 324. Rubber strip; 325. Fine filter screen; 326. Flow sensor; 327. Piping network; 328. Heat absorption pipe; 329. Second spiral slat; 330. Suction pipe; 331. Water pump; 332. Return pipe; 333. Cleaning structure; 334. Exhaust pipe; 400. Exhaust and heat dissipation assembly; 401. Cross-shaped component; 402. Fourth rotating shaft; 403. Exhaust fan; 404. Second motor; 405. Dust filter; 500. Air intake dehumidification assembly; 501. Dehumidification pipe; 502. Sloping bottom; 503. Third drain pipe; 504. Air intake pipe; 505. Dust filter; 600. Water receiving assembly; 601. Elastic spiral strip; 602. Elastic membrane; 603. Guide sleeve; 604. Chain; 605. Inner chain plate; 606. Limiting pin; 607. Outer chain plate; 608. Limiting groove; 609. Pin shaft; 610. Roller sleeve; 611. Sprocket; 612. First pulley; 613. Synchronous belt; 614. Second pulley; 615. Fourth gear; 616. Fifth gear; 617. Fifth shaft; 618. Sixth gear; 619. Seventh gear; 620. Third motor; 701. Cable trench. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0029] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] like Figure 1-15 As shown, an energy-saving and environmentally friendly cable branch box is used to optimize the power distribution network structure, comprising: A branch box assembly 100 is used to divide the incoming main cable 123 into multiple branch cables 124. The branch box includes a box body 101 with a box door 131 at the front opening. The box body 101 has a transmission space 105 and a branch space 102 distributed from top to bottom. A bucket-shaped water collection trough 106 is provided at the top of the transmission space 105. A photovoltaic panel 130 electrically connected to a battery 113 in the transmission space 105 and a controller 114 electrically connected to the battery 113 are provided above the water collection trough 106.

[0032] The water receiving assembly 600, which is located at the top of the transmission space 105 and electrically connected to the controller 114, is used to automatically increase the diameter of the water collection tank 106 when it rains.

[0033] The water-cooled heat dissipation component 300, which is installed in the branch space 102, is used to perform water-cooled heat dissipation inside the box 101. The water-cooled heat dissipation component 300 has the structural features of using rainwater in the water collection tank 106 to remove heat from the box 101 and filtering and automatically discharging the incoming rainwater.

[0034] Exhaust heat dissipation components 400 and several air intake dehumidification components 500 are respectively arranged on both sides of the box 101 for air cooling heat dissipation inside the box 101. The air intake dehumidification components 500 have the structural feature of dehumidifying the air about to enter the box 101 to avoid water vapor condensation inside the box 101 due to the temperature difference between day and night.

[0035] The anti-pull-back component 200, located at the cable socket 103 at the bottom of the enclosure 101, is used to prevent the main cable 123 and the branch cable 124 from being pulled back into the cable trench 701 to avoid loosening or instability between the main cable 123 and the branch cable 124 due to the pull-back.

[0036] In a further embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 12 As shown, the bottom of the housing 101 is provided with a base 111 for fixing the housing 101 to the wellhead of the cable trench 701 by bolts. The wall of the water collection tank 106 is provided with a limiting hole 107 for limiting the water level, a drain hole 109 for draining water, and a water supply hole 108 for supplying water to the water-cooled heat dissipation component 300. A first drain pipe 117 and a second drain hole 109 are respectively provided at the limiting hole 107 and the drain hole 109 for draining water out of the housing 101. A solenoid valve 119 electrically connected to the controller 114 and the battery 113 is provided on the second drain pipe 118. A first temperature sensor 115 and a second temperature sensor 116 electrically connected to the controller 114 are respectively provided in the water collection tank and the branch space 102. An insulator is connected to the branch space 102. The photovoltaic panel 120 is equipped with a mounting frame 121, on which a branch connector 122 is provided to divide the main cable 123 into multiple branch cables 124. A grid plate 110 is provided in the branch space 102 to isolate the main cable 123, branch cables 124 and related electrical components from the water-cooled heat dissipation assembly 300. A rain sensor electrically connected to the controller 114 is provided at the upper edge of the photovoltaic panel 130. A first rotating sleeve 128 is provided on the lower side of the photovoltaic panel 130. A column 127 is rotatably installed in the first rotating sleeve 128. The column 127 is installed on the bracket 126 above the extrusion groove. A locking screw 129 that mates with the column 127 is threaded onto the first rotating sleeve 128. A slag-blocking net 112 is provided in the groove of the water collection tank 106 to block large-sized slag.

[0037] In a further embodiment, such as Figure 4 , Figure 5As shown, the water receiving assembly 600 includes an elastic membrane 602 surrounding the edge of the water collection tank 106, four hollow elastic spiral bars 601 connected to the outside of the elastic membrane 602 and respectively disposed at the four corners of the extrusion groove to cause the elastic membrane 602 to fold outward, and four guide sleeves 603 disposed on the outside of the water collection tank 106 and corresponding to the elastic spiral bars 601. A chain 604 with its upper end moving linearly along the oblique edge of the water collection tank 106 is slidably disposed inside the guide sleeve 603 and the corresponding elastic spiral bar 601. The chain 604 has the characteristic of bending upward from its straight state without bending downward. A sprocket 611 is disposed on the guide sleeve 603 and engaged with the chain 604 and driven by a third motor 620 disposed below the middle of the water collection tank 106.

[0038] In a further embodiment, such as Figure 6 As shown, the chain 604 includes several pairs of inner chains. The inner chain plates 605 on the same side are hinged to each other by two pins 609. A roller 610 that cooperates with the sprocket 611 is rotatably mounted on the pin 609. Two limiting pins 606 are symmetrically arranged on the inner sides of both ends of the outer chain plate 607. The limiting pins 606 slide around the corresponding end pin 609 in the limiting groove 608 on the outer side of the corresponding end inner chain plate 605.

[0039] In a further embodiment, such as Figure 4 , Figure 5 As shown, a first pulley 612 is provided on the shaft of the sprocket 611. The first pulley 612 is connected to a second pulley 614 provided on the guide sleeve 603 via a synchronous belt 613. A fourth gear 615 is provided on the shaft of the second pulley 614. The fourth gear 615 meshes with a sixth gear 618 provided on the guide sleeve 603 via a fifth rotating shaft 617. The end of the fifth rotating shaft 617 is provided with the sixth gear 618. The sixth gear 618 meshes with a seventh gear 619 on the output shaft of the third motor 620.

[0040] In a further embodiment, such as Figure 2 , Figure 3 , Figure 7 , Figure 8 , Figure 10 , Figure 13As shown, the water-cooled heat dissipation assembly 300 includes a water storage tank 301 located at the bottom of the branch space 102 and a pipe network 327 located on three sides of the branch space 102. The water storage tank 301 is wrapped with an insulation layer. The upper end of the water storage tank 301 is provided with an exhaust pipe 334 for venting air out of the tank body 101 and a water supply pipe 305 connecting it to a water supply hole 108 on the water collection tank 106. The water supply pipe 305 is provided with a cleaning structure 333 for filtering dust in rainwater and automatically cleaning sludge inside. The two inside the water storage tank 301 A float plug 304 for switching the water inlet pipe 305 slides vertically on the guide rod 303. The return water pipe 332 and the suction water pipe 330 at the upper and lower ends of the pipe network 327 are respectively connected to the water storage tank 301 and the water collection tank 106. The lower end of the suction water pipe 330 is always inserted below the water surface in the water storage tank 301. A water pump 331 is installed on the suction water pipe 330. Vertical heat absorption pipes 328 are evenly distributed on three sides along the branch space 102 in the pipe network 327. Several second spiral slats 329 are evenly arranged circumferentially on the inner wall of the heat absorption pipe 328.

[0041] In a further embodiment, such as Figure 14 , Figure 15 As shown, the cleaning assembly includes a U-shaped recess 306 on the water inlet pipe 305. A fine filter screen 325 is installed inside the water storage tank 301 end of the recess 306. A flow sensor 326 is installed at the water collection trough 106 end of the recess 306. A sludge collection trough 307 is installed at the bottom of the recess 306. A drain pipe 308 for discharging sludge out of the housing 101 is installed at the bottom of the sludge collection trough 307. A threaded sleeve 309 is installed on the outer side of the recess 306, communicating with it and opposite to the sludge collection trough 307. A first rotating shaft 310 is threaded inside the threaded sleeve 309. The first rotating shaft 310 is rotatably connected to a plug 311 that slides vertically inside the sludge collection trough 307 and controls the operation of the drain pipe 308. A first spiral strip 312 is installed at the lower end of the first rotating shaft 310. The upper end is rotatably provided with a second rotating sleeve 313 that slides axially with the first rotating shaft 310. A fixing sleeve 321 is provided in the recessed part 306 through a fixing rod 322. A third rotating shaft 320 is rotatably provided in the fixing sleeve 321. A scraper 323 and a third gear 319 are respectively provided at the upper and lower ends of the third rotating shaft 320. A rubber strip 324 that cooperates with the fine filter screen 325 is provided at the upper end of the scraper 323. A second rotating shaft 316 is rotatably provided in the round hole on the recessed part 306. The second rotating shaft 316 is connected to a first motor 317 outside the water supply pipe 305. A second gear 318 that meshes with the third gear 319 is provided on the second rotating shaft 316. A first gear 315 that meshes with the gear ring 314 on the second rotating sleeve 313 is provided on the second rotating shaft 316.

[0042] In a further embodiment, such as Figure 11 As shown, the anti-pull-back assembly 200 includes an elastic ball cup 201 and a protective sleeve 203 that mates with the main cable 123 or the branch cable 124. The elastic ball cup 201 is bolted and clamping ring 202 is located at the cable socket 103 at the bottom of the branch space 102. The elastic ball cup 201 has a circular hole in the middle that allows the main cable 123 or the branch cable 124 to pass through from bottom to top and is clamped to the main cable 123 or the branch cable 124. The protective sleeve 203 slides vertically in the cable socket 103. The upper and lower ends of the protective sleeve 203 are respectively provided with a spherical annular protrusion 205 that mates with the elastic ball cup 201 and a flared opening 204 that makes it easy for the main cable 123 or the branch cable 124 to be inserted from bottom to top. A return spring 206 is connected between the flared opening 204 and the bottom of the housing 101, so that the spherical annular protrusion 205 abuts against the bottom of the branch space 102.

[0043] In a further embodiment, such as Figure 9 As shown, the exhaust heat dissipation assembly 400 includes a cross 401 disposed in an exhaust vent 104 on one side of the branch space 102. A fourth rotating shaft 402 is rotatably disposed in the circular hole in the middle of the cross 401. An exhaust fan 403 is disposed at one end of the fourth rotating shaft 402. The other end of the fourth rotating shaft 402 is connected to a second motor 404 on the cross 401. A dustproof net 405 is disposed inside the outer end of the exhaust vent 104.

[0044] In a further embodiment, such as Figure 10 As shown, the air intake dehumidification assembly 500 includes an air intake pipe 504 disposed on the side wall of the housing 101 and connecting the inside and outside of the housing 101. A dust filter 505 and a dehumidification pipe 501 are respectively disposed at both ends of the air intake pipe 504. The dehumidification pipe 501 is fitted onto the corresponding heat absorption pipe 328 and forms an annular space with the heat absorption pipe 328. The lower end of the dehumidification pipe 501 is provided with a sloping bottom 502 to facilitate the collection of water droplets. The lowest part of the sloping bottom 502 is provided with a third drain pipe 503 to discharge water droplets to the outside of the housing 101. The inner diameter of the third drain pipe 503 is much smaller than the inner diameter of the dehumidification pipe 501 and the air intake pipe 504.

[0045] In this invention, the water-collecting component 600 located at the top of the housing 101 can expand the elastic membrane 602 surrounding the water collection trough 106 during rain, effectively increasing the diameter of the water collection trough 106. This significantly improves the efficiency and capacity of the water collection trough 106 in collecting rainwater, while simultaneously reducing the impact on the water collection efficiency caused by the top photovoltaic panel 130 blocking it. The water-cooling heat dissipation component 300 in this invention allows the rainwater collected by the water-collecting component 600 to flow through the heat-absorbing pipes 328 in the pipe network 327 located near the inner wall of the housing 101, effectively cooling the air surrounding the heat-absorbing pipes 328. The second spiral slats 329 on the inner wall of the heat-absorbing pipes 328 effectively increase the heat absorption area of ​​the flowing rainwater, thereby achieving efficient cooling of the housing 101. The cleaning structure 333 on the water-cooled heat dissipation assembly 300 of the present invention, which is used to guide rainwater from the water collection tank 106 into the water tank, can effectively filter and retain dust and sand in the rainwater. When the filter screen in the cleaning structure 333 becomes clogged 311 due to long-term use, it self-cleans the filter screen and discharges the accumulated mud and sand in the recessed part 306 of the water-cooled heat dissipation assembly 305 and the attached substances cleaned off the filter screen, thereby achieving the purpose of effectively cleaning the filter screen. The air intake dehumidification assembly 500 set on the side wall of the housing 101 of the present invention effectively filters the humid air entering the housing 101. At the same time, it can use the low temperature outside the heat absorption tube 328 in the water-cooled heat dissipation assembly 300 to effectively dehumidify the humid air about to enter the housing 101. This avoids the humid air in rainy and humid areas in the south or coastal areas from directly entering the housing 101 and condensing into water droplets, which could lead to short circuits or reduced insulation strength inside the housing 101 when there are large temperature differences between day and night. The anti-pull-back component 200 installed at the bottom socket of the box 101 in this invention can effectively prevent the plug of the main cable 123 or branch cable 124 from becoming loose or disconnected due to unavoidable pulling during construction in the cable trench 701, thus ensuring the normal operation of the cable branch box.

[0046] The operation flow of this invention is as follows: In the initial state, the water tank 301 contains a sufficient amount of water and the float 304 is open to the water inlet pipe 305. The four elastic spiral bars 601 in the water receiving assembly 600 are in a coiled state. The chain 604 is inserted into the straight section of the elastic spiral bar 601 in a straight state. The pin 609 on the outer chain plate 607 in the straight section of the chain 604 is located at the limit position of the corresponding limiting groove 608 on the corresponding inner chain plate 605. The elastic membrane 602 is in a state of outward retraction under the action of the four elastic spiral bars 601. The solenoid valve 119 is in a closed state. The elastic ball cup 201 in the anti-pull-back assembly 200 is in a state of mutual compression with the main cable 123 or branch cable 124 in its central circular hole. The return spring 206 is in a compressed state. The spherical annular protrusion 205 at the upper end of the protective sleeve 203 abuts against the bottom of the branch space 102 under the action of the return spring 206.

[0047] When the temperature inside the branch space 102 of the housing 101 rises to the allowable temperature limit inside the housing 101, the second temperature sensor 116 transmits a signal to the controller 114. The controller 114 controls the operation of the water pump 331 and the second motor 404. The water pump 331 sends water from the storage tank 301 through the suction pipe 330 to the collection tank 106 via the pipe network 327 and the return pipe 332. The water entering the collection tank 106 circulates back into the storage tank 301 through the water supply hole 108 and the water filling pipe 305. During the process of water passing through the heat absorption pipe 328 in the pipe network 327, the water fully absorbs heat from the inside of the housing 101 through the second spiral slats 329 inside the heat absorption pipe 328. Since the second spiral slats 329 effectively extend the flow path of the water in the suction pipe 330, the water flowing in the heat absorption pipe 328 can efficiently absorb heat from the inside of the housing 101 and carry the heat to the collection tank 106 for effective heat dissipation. The second motor 404 drives the exhaust fan 403 to rotate rapidly through the fourth rotating shaft 402. The exhaust fan 403 exhausts the hot air in the branch space 102 to the outside of the box 101 through the exhaust port 104 for heat dissipation. At the same time, the outside air enters the branch space 102 of the box 101 through all the air inlet pipes 504 and dehumidification pipes 501 in the air inlet dehumidification assembly 500 to cool the box 101.

[0048] As outside air passes through the dehumidification pipe 501, the moisture in the air condenses into water droplets under the heat absorption of the cold air around the corresponding heat absorption pipe 328 and accumulates on the sloping bottom 502 of the dehumidification pipe 501 before being discharged outside the housing 101 through the third drain pipe 503.

[0049] When it rains, the rain sensor on the photovoltaic panel 130 transmits a signal to the controller 114. The controller 114 controls the third motor 620 to run. The third motor 620 drives four sixth gears 618 to rotate synchronously through the seventh gear 619. The four sixth gears 618 drive the chain 604 to move in a straight line into the corresponding elastic spiral bar 601 through the corresponding fifth rotating shaft 617, fifth gear 616, fourth gear 615, second pulley 614, synchronous belt 613, first pulley 612 and sprocket 611 respectively. The chain 604 moving into the elastic spiral bar 601 quickly makes the elastic spiral bar 601 straighten at an angle. The four elastic spiral bars 601 unfold the outwardly rolled-up elastic membrane 602 and effectively increase the diameter of the water collection tank 106, thereby improving the water collection efficiency and capacity of the water collection tank 106. The design of the chain 604 with unidirectional bending and reverse straightening allows the chain 604 to be arranged in a bent state on the bottom of the outer side of the water collection tank 106, which can effectively save its installation space and maximize the length of the chain 604. This further ensures the length of the chain 604 inserted into the elastic spiral bar 601, thereby effectively increasing the expansion range of the elastic membrane 602 and effectively increasing the diameter of the water collection tank 106.

[0050] When the water level in the water collection tank 106 reaches the position of the limiting groove 608, as rainwater continues to converge into the water collection tank 106, the water in the water collection tank 106 is discharged to the outside of the box 101 through the limiting groove 608 and the first drain pipe 117, thereby ensuring that the water level in the water collection tank 106 is maintained at a stable height and will not overflow. The debris net 112 can effectively block larger debris flying in from the outside due to strong winds or other reasons, preventing large debris from entering the water in the water collection tank 106 and avoiding blockage 311 when rainwater moves towards the water-cooled heat dissipation component 300. Water in the water collection tank 106 is added to the water storage tank 301 through the water inlet pipe 305. As the water level in the water storage tank 301 rises, the float 304 eventually closes the water inlet pipe 305 under the action of buoyancy and keeps the water volume in the water storage tank 301 stable. During the process of adding water to the water storage tank 301 through the water inlet pipe 305, the water storage tank 301 vents air through the vent pipe 334.

[0051] When the rain stops, the rain sensor transmits a signal to the controller 114. The controller 114 controls the third motor 620 to run. The third motor 620 drives four chains 604 to retract through a series of transmissions. The four elastic spiral strips 601 rewind the elastic membrane 602 outward.

[0052] When installing the branch box, adjust the position of the photovoltaic panel 130 by loosening the locking screw 129 according to the installation position of the branch box. After the position of the photovoltaic panel 130 is adjusted, tighten the locking screw 129.

[0053] In winter, if the temperature drops to or below zero degrees Celsius, the first temperature sensor 115 transmits a signal to the controller 114. The controller 114 then controls the solenoid valve 119 to open, allowing water formed from melting snow in the water collection tank to drain out through the second drain pipe 118, preventing freezing inside the water collection tank. Meanwhile, the water inside the storage tank 301 is protected by an insulation layer, preventing freezing.

[0054] When the main cable 123 or branch cable 124 is inserted into the box 101 from inside the cable trench 701 through the cable socket 103 at the bottom of the box 101, the protective sleeve 203 in the anti-pull-back assembly 200 is pushed up and the return spring 206 is compressed. The protective sleeve 203 drives the spherical annular protrusion 205 to open and enlarge the central circular hole of the elastic ball cup 201. After the main cable 123 or branch cable 124 is inserted to a sufficient length for plug-in installation, the force on the protective sleeve 203 is removed. The protective sleeve 203 is reset under the action of the return spring 206, and the elastic ball cup 201 returns to its original state and clamps the main cable 123 or branch cable 124.

[0055] When the cable trench 701 is being constructed, if the main cable 123 or the branch cable 124 is unintentionally pulled, the elastic ball cup 201 can effectively prevent the pullback of the main cable 123 or the branch cable 124. Under the action of the elastic ball cup 201, the main cable 123 or the branch cable 124 will not pull back or will only pull back slightly, thus avoiding the main cable 123 or the branch cable 124 from becoming loose or having a poor connection due to a large pullback.

Claims

1. An energy-saving and environmentally friendly cable branch box for optimizing power distribution network structure, characterized in that, include: A branch box assembly is used to divide the incoming main cable into multiple branch cables. The branch box includes a box body with a door at the front opening. The box body is provided with a transmission space and a branch space distributed from top to bottom. A bucket-shaped water collection trough is provided at the top of the transmission space. A photovoltaic panel electrically connected to a battery in the transmission space and a controller electrically connected to the battery are provided above the water collection trough. The water collection component, located at the top of the transmission space and electrically connected to the controller, is used to automatically increase the diameter of the water collection tank when it rains. The water-cooled heat dissipation component installed in the branch space is used to dissipate heat from the box with water. The water-cooled heat dissipation component has the structural features of using rainwater in the water collection tank to remove heat from the box and filtering and automatically discharging the incoming rainwater. The exhaust heat dissipation components and several air intake dehumidification components are respectively set on both sides of the box body for air cooling heat dissipation inside the box body. The air intake dehumidification components have the structural feature of dehumidifying the air about to enter the box body to avoid water vapor condensation inside the box body due to the temperature difference between day and night. The anti-pullback assembly, located at the cable socket at the bottom of the enclosure, is used to prevent the main cable and branch cable from being pulled back into the cable trench, thus avoiding loosening and poor connection between the main cable and branch cable due to the pullback.

2. The energy-saving and environmentally friendly cable branch box according to claim 1, characterized in that, The bottom of the enclosure is equipped with a base that secures the enclosure to the cable trench wellhead using bolts. The wall of the water collection tank has a limiting hole for controlling the water level, a drain hole for drainage, and a water supply hole for supplying water to the water-cooled heat dissipation components. A first drain pipe and a second drain hole are respectively installed at the limiting hole and the drain hole to drain water out of the enclosure. A solenoid valve electrically connected to the controller and battery is installed on the second drain pipe. A first temperature sensor and a second temperature sensor electrically connected to the controller are respectively installed in the water collection tank and the branch space. An insulator is used to connect the branch space. An installation frame is provided, on which branch connectors are provided to divide the main cable into multiple branch cables. A grid plate is provided in the branch space to isolate the main cable, branch cables, and related electrical components from the water-cooled heat dissipation components. A rain sensor electrically connected to the controller is provided at the upper edge of the photovoltaic panel. A first rotating sleeve is provided on the lower side of the photovoltaic panel, and a column is rotatably installed in the first rotating sleeve. The column is installed on a bracket above the extrusion groove. A locking screw that mates with the column is threaded onto the first rotating sleeve. A slag-blocking net is provided in the opening of the water collection tank to block large-sized slag.

3. The energy-saving and environmentally friendly cable branch box according to claim 1, characterized in that, The water receiving assembly includes an elastic membrane surrounding the edge of the water collection tank, four hollow elastic spiral strips connected to the outside of the elastic membrane and respectively located at the four corners of the extrusion groove to cause the elastic membrane to fold outwards and retract, and four guide sleeves located on the outside of the water collection tank and corresponding to the elastic spiral strips. A chain with its upper end moving linearly along the oblique edge of the water collection tank is slidably arranged inside the guide sleeves and the corresponding elastic spiral strips. The chain has the characteristic of bending upwards from its straight state without bending downwards. A sprocket driven by a third motor is provided on the guide sleeve, which meshes with the chain and is located in the lower middle part of the water collection tank.

4. The energy-saving and environmentally friendly cable branch box according to claim 3, characterized in that, The chain includes several pairs of inner chains. Adjacent inner chain plates on the same side are hinged to outer chain plates by two pins. Rollers that cooperate with sprockets are rotatably mounted on the pins. Two limiting pins are symmetrically arranged on the inner sides of both ends of the outer chain plates. The limiting pins slide around the corresponding end pins in the limiting grooves on the outer side of the corresponding end inner chain plates.

5. The energy-saving and environmentally friendly cable branch box according to claim 4, characterized in that, A first pulley is provided on the shaft of the sprocket. The first pulley is connected to a second pulley provided on the guide sleeve via a synchronous belt. A fourth gear is provided on the shaft of the second pulley. The fourth gear meshes with a sixth gear provided on the guide sleeve via a fifth rotating shaft. A sixth gear is provided at the end of the fifth rotating shaft. The sixth gear meshes with a seventh gear on the output shaft of the third motor.

6. The energy-saving and environmentally friendly cable branch box according to claim 1, characterized in that, The water-cooled heat dissipation assembly includes a water storage tank located at the bottom of the branch space and a pipe network located on three sides of the branch space. The water storage tank is wrapped with an insulation layer. The upper end of the water storage tank is provided with an exhaust pipe for venting air out of the tank and a water supply pipe that connects the exhaust pipe to a water supply hole on the water collection tank. The water supply pipe is provided with a cleaning structure for filtering dust in the rainwater and automatically cleaning the sludge inside. Two guide rods inside the water storage tank have float plugs that slide vertically to control the water supply pipe. The return water pipe and the suction water pipe at the upper and lower ends of the pipe network are respectively connected to the water storage tank and the water collection tank. The lower end of the suction water pipe is always inserted below the water surface in the water storage tank. A water pump is provided on the suction water pipe. Vertical heat absorption pipes are evenly distributed along the three sides of the branch space in the pipe network. Several second spiral strips are evenly arranged circumferentially on the inner wall of the heat absorption pipe.

7. The energy-saving and environmentally friendly cable branch box according to claim 6, characterized in that, The cleaning assembly includes a U-shaped recess on the water inlet pipe. A fine filter screen is installed inside the water tank end of the recess, and a flow sensor is installed at the water collection trough end of the recess. A sludge collection trough is located at the bottom of the recess, and a drain pipe for discharging sludge out of the tank is located at the bottom of the sludge collection trough. A threaded sleeve is installed on the outer side of the recess, communicating internally with and opposite to the sludge collection trough. A first rotating shaft is threaded internally on the threaded sleeve. The first rotating shaft is rotatably connected to the drain pipe switch, sliding vertically within the sludge collection trough. A first spiral strip is installed at the lower end of the first rotating shaft. The upper part of the threaded sleeve... A second rotating sleeve is rotatably mounted on the end and slides axially with the first rotating shaft. A fixed sleeve is mounted inside the recessed part via a fixed rod. A third rotating shaft is rotatably mounted inside the fixed sleeve. A scraper and a third gear are respectively mounted on the upper and lower ends of the third rotating shaft. A rubber strip that engages with a fine filter screen is mounted on the upper end of the scraper. A second rotating shaft is rotatably mounted inside the circular hole on the recessed part. The second rotating shaft is connected to a first motor on the outside of the water inlet pipe. A second gear that meshes with the third gear is mounted on the second rotating shaft. A first gear that meshes with the gear ring on the second rotating sleeve is mounted on the second rotating shaft.

8. The energy-saving and environmentally friendly cable branch box according to claim 1, characterized in that, The anti-backlash assembly includes a flexible ball cup and a protective sleeve that mates with the main cable or branch cable. The flexible ball cup bolt and clamping ring are located at the cable socket at the bottom of the branch space. The flexible ball cup has a circular hole in the middle that allows the main cable or branch cable to pass through from bottom to top and clamps with the main cable or branch cable. The protective sleeve slides vertically in the cable socket. The upper and lower ends of the protective sleeve are respectively provided with a spherical annular protrusion that mates with the flexible ball cup and a flared opening that allows the main cable or branch cable to be easily inserted from bottom to top. A return spring is connected between the flared opening and the bottom of the housing so that the spherical annular protrusion abuts against the bottom of the branch space.

9. The energy-saving and environmentally friendly cable branch box according to claim 1, characterized in that, The exhaust and heat dissipation assembly includes a cross-shaped structure disposed in the exhaust vent on one side of the branch space. A fourth rotating shaft is rotatably disposed in the circular hole in the middle of the cross-shaped structure. An exhaust fan is disposed at one end of the fourth rotating shaft, and the other end of the fourth rotating shaft is connected to a second motor on the cross-shaped structure. A dustproof net is disposed inside the outer end of the exhaust vent.

10. An energy-saving and environmentally friendly cable branch box according to claim 6, characterized in that, The air intake dehumidification assembly includes an air intake pipe disposed on the side wall of the housing and connecting the inside and outside of the housing. Dust filter screens and dehumidification pipes are respectively disposed at both ends of the air intake pipe. The dehumidification pipe is fitted onto the corresponding heat absorption pipe and forms an annular space with the heat absorption pipe. The lower end of the dehumidification pipe is provided with a sloping bottom to facilitate the collection of water droplets. The lowest part of the sloping bottom is provided with a third drain pipe to discharge water droplets to the outside of the housing. The inner diameter of the third drain pipe is much smaller than the inner diameter of the dehumidification pipe and the air intake pipe.

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