Primary and secondary fusion ring main unit with anti-condensation function

Abstract

The invention discloses a primary and secondary fusion ring main unit with an anti-condensation function, and relates to the technical field of ring main units, and the primary and secondary fusion ring main unit comprises a self-adaptive air duct switching assembly which is arranged at the back of a box cover and is provided with a thermal bimetallic strip, a straight rack, a lead screw, a threaded block, a gear and a plugging plate. The thermal bimetallic strip is arranged in the self-adaptive air duct switching assembly, the straight rack is connected with the gear in a meshed mode, the threaded block is arranged at one end of the lead screw in a threaded sleeving mode, the blocking plate is arranged on the side close to the threaded block, and the threaded block moves front and back at one end of the lead screw through meshing of the straight rack and the gear. The vertical ventilation slots are automatically closed through temperature rise, so that cold air in the region is prevented from entering the ring main unit body; in this way, the air flow mode can be improved, in a humid environment, closing of the vertical ventilation slots helps reduce moisture penetration, and meanwhile the needed humidity level is maintained by controlling the opening degree of the transverse ventilation slots.

Description

Technical Field

[0001] This invention relates to the field of ring network box technology, specifically to a primary and secondary integrated ring network box with anti-condensation function. Background Technology

[0002] Primary equipment includes circuit breakers, disconnect switches, and busbars, responsible for switching on and off and carrying high voltage / current. Secondary equipment includes measurement and control terminals and protection terminals, responsible for measurement, control, and protection. Integration means that measurement and control and protection function modules are miniaturized and directly installed on the primary equipment body, achieving compact structure, information sharing, and functional synergy. Condensation is the phenomenon of water vapor condensing on the surface of equipment when the temperature inside the cabinet is lower than the dew point temperature of the ambient air. It is one of the main culprits leading to insulation degradation, short circuits, and corrosion. The ring main unit is equipped with an intelligent temperature and humidity control device that monitors the temperature and humidity inside the unit and automatically starts the heater to control the humidity below the dew point, protecting the sensitive secondary integrated equipment from moisture corrosion and significantly reducing the risk of malfunction, failure to operate, and data interruption caused by condensation.

[0003] In cold environments, the components inside a ring main unit generate a significant amount of heat during operation. As this heat accumulates, the internal temperature of the ring main unit gradually rises. Meanwhile, the ventilation slots, which connect to the outside environment, remain cool. This temperature difference makes frost easily form in these areas. Cold outside air can be transported into the unit through these slots, creating frost. Frost formation impairs heat dissipation, leading to decreased equipment efficiency. Some ring main units attempt to avoid this by closing the ventilation slots. However, this direct closure causes heat to continue to accumulate within the unit. This heat buildup leads to water vapor condensation inside, increasing the frost area, accelerating the aging of electronic components, and slowing down their operation and response time. The increased ventilation slots affect the overall system performance. Regardless of whether the ventilation slots are open or closed, they are in a fixed and static state, unable to respond to real-time temperature changes inside the enclosure. When the inside is overheated, it cannot provide sufficient ventilation; when the temperature drops and the outside is too cold, it cannot reduce the inflow of cold air in time to prevent frost formation. After the internal temperature of the enclosure drops, the ventilation slot diameter still cannot be automatically adjusted, affecting the efficiency of subsequent heat dissipation. To address this, a primary and secondary fusion ring network enclosure with anti-condensation function is designed. It can automatically and gradually adjust the ventilation slot diameter according to the internal temperature and pressure of the ring network enclosure, thereby minimizing the direct inflow of cold air while dissipating heat and preventing internal condensation. Summary of the Invention

[0004] The purpose of this invention is to provide a primary and secondary fusion ring network box with anti-condensation function to solve the problems mentioned in the background art, such as the continuous accumulation of heat in the box due to the direct closure of the ventilation slots, the condensation of water vapor in the box, the increase of the frosting area, the accelerated aging of electronic components, the slowdown of the operation speed of electronic components, and the increase of response time.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a primary and secondary fusion ring network box with anti-condensation function, comprising;

[0006] Ring network enclosure;

[0007] The lid has multiple vertical ventilation slots on one side and a horizontal ventilation slot on the other side.

[0008] An adaptive air duct switching component is installed on the back of the box cover. The adaptive air duct switching component is equipped with a thermal bimetallic strip and a sealing plate. It is used to automatically close the vertical ventilation slots when the ambient temperature inside the ring network box rises, so as to prevent cold air in this area from entering the ring network box. It can automatically and gradually close the vertical ventilation slots according to the temperature and pressure difference inside the ring network box.

[0009] A ventilation orifice adjustment component is located at the bottom of the adaptive air duct switching component. The ventilation orifice adjustment component includes a pressure ring, a U-shaped block, a contact rod, a tension spring, a force-bearing block, an embedded rod, and an adjustment panel. The pressure ring lowers to apply a downward force to the U-shaped block, automatically adjusting the ventilation orifice diameter of the transverse ventilation slot. As the adjustment panel rises and falls, it adjusts the opening area of ​​the transverse ventilation slot. The tension spring extends and pushes the force-bearing block downward at one end of the embedded rod. One side of the U-shaped block is fixed to one side of the force-bearing block, and the height of the U-shaped block is adjusted by moving the force-bearing block.

[0010] After the U-shaped block is subjected to force, it moves the adjustment panel downwards under the connection of the abutment rod. The adjustment panel itself is completely in contact with the horizontal ventilation slot and is completely sealed. As the adjustment panel moves, the diameter of the horizontal ventilation slot increases, and the air circulation area increases. The ventilation area of ​​the vertical ventilation slot is greater than that of the horizontal ventilation slot, so it is necessary to reduce the air circulation and close the vertical ventilation slot. By adjusting the opening and closing state of the ventilation slot, the air flow pattern is improved. In a humid environment, closing the vertical ventilation slot reduces moisture penetration, while controlling the opening degree of the horizontal ventilation slot maintains the required humidity level.

[0011] Preferably, the adaptive air duct switching assembly further includes a straight rack, a lead screw, a threaded block, and a gear. The straight rack meshes with the gear, and the threaded block is threaded onto one end of the lead screw. The adaptive air duct switching assembly also includes an expansion box, two heat-conducting pipes, a lifting strip, and a push plate. The expansion box is fixedly installed on the back of the box cover. One end of each of the two heat-conducting pipes is inserted into the top of the expansion box to conduct the heat generated inside the ring network box to the surface of the bimetallic strip, causing it to expand due to heat. One end of the lifting strip is inserted into the bottom of the bimetallic strip. The expansion of the bimetallic strip due to heat causes the lifting strip to move downward. The push plate is located at one end of the lifting strip and moves downward under force.

[0012] Preferably, the extension plate is fixedly installed on one side of the displacement plate, and one side of the extension plate is fixed to one side of the threaded block for adjusting the forward and backward movement of the extension plate. The other side of the displacement plate is fixed to one side of the sealing plate, and the movement of the extension plate will drive the sealing plate to move synchronously.

[0013] Preferably, the ventilation aperture adjustment assembly further includes a vertical block, a limiting shaft, and a vertical plate. The vertical block is fixedly installed at the bottom of the push plate. One side of the limiting shaft is inserted and connected to one side of the vertical block. The vertical plate is sleeved on one end of the limiting shaft. The descent of the vertical plate causes the pressure ring to move downward and approach the U-shaped block.

[0014] Preferably, the ventilation hole diameter adjustment assembly further includes a first positioning shaft, a positioning sleeve, a second positioning shaft, and a pressure cylinder. One end of the first positioning shaft is fixedly disposed on one side of the vertical plate, and the pressure cylinder is fixedly sleeved on one end of the second positioning shaft and fixed to the first positioning shaft through the positioning sleeve.

[0015] Preferably, the pressure rings are fixedly mounted on the outer surface of the pressure cylinder, and the distance between the pressure cylinder and the U-shaped block is adjusted by moving the pressure cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In this invention, the screw block moves smoothly back and forth inside the housing by rotating the lead screw. Both ends of the lead screw are limited to rotating in place inside the housing by deep groove ball bearings. When the straight rack meshes with the gear, it drives the lead screw to rotate, causing the screw block to move backward at one end of the lead screw. This causes the extension plate to gradually approach the vertical ventilation slot. Once they contact each other, the vertical ventilation slot is closed, ensuring timely closure in cold environments and preventing condensation from melting into water droplets that drip into the ring mesh box and cause damage. The reaction force caused by the difference in length due to heat will cause the composite material to bend. As the temperature rises, the bimetallic strip... As the tube gradually bends and stretches, it expands inside the expansion chamber, creating a downward thrust on the lifting bar. This, in turn, drives the straight rack downward through the connection of the push plate. As the adjustment panel moves, the diameter of the horizontal ventilation slots increases, thus increasing the airflow area. The ventilation area of ​​the vertical ventilation slots is larger than that of the horizontal ventilation slots. Closing the vertical ventilation slots can reduce the energy consumption of the heating system when it is necessary to reduce airflow. By adjusting the opening and closing of the ventilation slots, the airflow pattern can be improved. In humid environments, closing the vertical ventilation slots helps reduce moisture penetration, while controlling the opening degree of the horizontal ventilation slots helps maintain the required humidity level.

[0018] In this invention, by pushing the plate downwards, the second positioning axis moves downwards along with the vertical plate. The pressure ring gradually approaches the U-shaped block, which transmits the force to the force-receiving block. The force-receiving block then moves downwards at one end of the embedded rod, causing the tension spring to extend under stress. As the force-receiving block moves downwards, the adjustment panel moves downwards along with the U-shaped block. The adjustment panel gradually moves downwards on one side of the horizontal ventilation slot. The adjustment panel itself completely seals off the horizontal ventilation slot, relying entirely on the vertical ventilation slot to achieve air convection between the ring network box and the outside air. As the U-shaped block moves downwards, the sealing plate gradually... As the horizontal ventilation duct gradually approaches the vertical ventilation duct, the adjustment panel moves downwards on one side of the horizontal ventilation duct, gradually opening the horizontal ventilation duct. This structure automatically closes the vertical ventilation duct and then automatically opens the horizontal ventilation duct. Without affecting heat dissipation and ventilation, it also prevents a large amount of water droplets from dripping into the ring mesh box. The threaded block moves forward at one end of the screw, and with the connection of the extension plate, it drives the displacement plate and the sealing plate to move forward. The sealing plate gradually moves away from the vertical ventilation duct, making the vertical ventilation duct open. The vertical ventilation duct can open a large ventilation aperture normally, allowing hot air to convect with the outside air in a timely manner. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of a primary and secondary fusion ring network box with anti-condensation function according to the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of the main body of a primary and secondary fusion ring network box with anti-condensation function according to the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the cover of a primary and secondary fusion ring network box with anti-condensation function according to the present invention;

[0022] Figure 4 This is a schematic diagram of the installation position of the adaptive air duct switching component in a primary and secondary fusion ring network box with anti-condensation function according to the present invention.

[0023] Figure 5 This invention relates to a primary and secondary fusion ring network box with anti-condensation function. Figure 4 An enlarged structural diagram at point A;

[0024] Figure 6 This is a schematic diagram of the installation position of the ventilation hole diameter adjustment component in a primary and secondary fusion ring network box with anti-condensation function according to the present invention.

[0025] Figure 7 This invention relates to a primary and secondary fusion ring network box with anti-condensation function. Figure 6 An enlarged structural diagram at point B;

[0026] Figure 8 This is a rear view schematic diagram of the vertical ventilation slot in a primary and secondary fusion ring network box with anti-condensation function according to the present invention.

[0027] In the diagram: 100, Ring mesh enclosure; 200, Cover; 300, Vertical ventilation slot; 400, Horizontal ventilation slot; 1, Adaptive air duct switching component; 101, Expansion box; 102, Heat pipe; 103, Bimetallic strip; 104, Lifting bar; 105, Push plate; 106, Straight rack; 107, Support plate; 108, Receiving rack; 109, Lead screw; 110, Threaded block; 111, Gear; 112, Displacement. 1. Plate; 113. Sealing plate; 114. Extension plate; 2. Ventilation orifice adjustment assembly; 201. Vertical block; 202. Limiting shaft; 203. Vertical plate; 204. First positioning shaft; 205. Positioning sleeve; 206. Second positioning shaft; 207. Pressure cylinder; 208. Embedded rod; 209. Tension spring; 210. Force block; 211. Pressure ring; 212. U-shaped block; 213. Abutment rod; 214. Adjustment panel. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To address the problem that existing primary and secondary fusion ring main units with anti-condensation functions suffer from continuous heat buildup during operation due to the direct closure of ventilation slots, leading to water vapor condensation, increased frost area, accelerated aging of electronic components, slower operating speed, and increased response time, this invention provides a primary and secondary fusion ring main unit with anti-condensation function. (Refer to...) Figure 1 and Figure 2 As shown: including:

[0030] Ring network enclosure 100;

[0031] The box cover 200 has multiple vertical ventilation slots 300 on one side and a horizontal ventilation slot 400 on one side.

[0032] The adaptive air duct switching component 1 is located on the back of the cover 200. The adaptive air duct switching component 1 is equipped with a thermal bimetallic strip 103 and a sealing plate 113. It is used to automatically close the vertical ventilation slot 300 when the ambient temperature inside the ring network box 100 rises, so as to prevent cold air in this area from entering the ring network box 100. It can automatically and gradually close the vertical ventilation slot 300 according to the temperature and pressure difference inside the ring network box 100.

[0033] The ventilation orifice adjustment component 2 is located at the bottom of the adaptive air duct switching component 1. The ventilation orifice adjustment component 2 is provided with a pressure ring 211, a U-shaped block 212, an abutment rod 213, a tension spring 209, a force-bearing block 210, an embedded rod 208, and an adjustment panel 214. The pressure ring 211 lowers to apply a downward force to the U-shaped block 212, automatically adjusting the ventilation orifice diameter of the transverse ventilation slot 400. As the adjustment panel 214 rises and falls, it is used to adjust the opening area of ​​the transverse ventilation slot 400. The tension spring 209 extends and pushes the force-bearing block 210 downward at one end of the embedded rod 208. One side of the U-shaped block 212 is fixed to one side of the force-bearing block 210. The height of the U-shaped block 212 is adjusted by moving the force-bearing block 210.

[0034] After the U-shaped block 212 is subjected to force, it drives the adjustment panel 214 to move downward under the connection of the abutment rod 213. The adjustment panel 214 itself is completely in contact with the horizontal ventilation slot 400 and is completely sealed. As the adjustment panel 214 moves, the diameter of the horizontal ventilation slot 400 increases, and the air circulation area increases. The ventilation area of ​​the vertical ventilation slot 300 is larger than that of the horizontal ventilation slot 400, so it is necessary to reduce the air circulation and close the vertical ventilation slot 300. By adjusting the opening and closing state of the ventilation slot, the air flow pattern is improved. In a humid environment, closing the vertical ventilation slot 300 reduces moisture penetration, while controlling the opening degree of the horizontal ventilation slot 400 maintains the required humidity level.

[0035] The ring main unit 100 internally houses a transformer and switchgear, integrating electrical protection, measurement, and control devices. It possesses excellent airtightness. A heater is installed inside the ring main unit 100 to maintain an internal temperature above the dew point temperature, thus preventing water vapor condensation. The heater converts electrical energy into heat energy, raising the internal temperature of the ring main unit 100. During operation, the transformer dissipates heat due to copper and iron losses, causing the internal temperature of the ring main unit 100 to gradually rise. In cold seasons, the heat inside the ring main unit 100 cannot be effectively dissipated due to the enclosed space; therefore, vertical ventilation slots 3 are designed. To facilitate air circulation, the vertical ventilation slot 300 is designed using the principle of natural convection, allowing cold outside air to enter while simultaneously expelling warm internal air, creating a temperature cycle. In cold environments, the water vapor content around the vertical ventilation slot 300 is closely related to the temperature. Located at the junction of hot and cold air, the vertical ventilation slot 300 is easily affected by external cold air, causing its surface temperature to drop, making it easier to reach the dew point temperature. After condensation, it melts into water droplets upon contact with warm air, and these droplets easily drip into the ring network housing 100. The vertical ventilation slot 300 is then closed by the adaptive air duct switching component 1.

[0036] To address the issue of continuous heat buildup in the enclosure caused by directly closing the ventilation slots, which leads to water vapor condensation inside the enclosure, increasing the frost area and accelerating the aging of electronic components, an adaptive air duct switching component 1 is installed to automatically close the vertical ventilation slots 300, while hot air inside the ring network enclosure 100 is guided outward through the horizontal ventilation slots 400.

[0037] Preferably, the specific working process of the adaptive air duct switching component 1 is as follows: Figure 3 and Figure 4As shown, the adaptive air duct switching assembly 1 also includes an expansion box 101, two heat pipes 102, a lifting strip 104, and a push plate 105. The expansion box 101 is fixedly installed on the back of the box cover 200. One end of each of the two heat pipes 102 is inserted and connected to the top of the expansion box 101, which is used to conduct the heat generated inside the ring network box 100 to the surface of the bimetallic strip 103 through the heat pipes 102 to make it expand due to heat. One end of the lifting strip 104 is inserted and connected to the bottom of the bimetallic strip 103. The expansion of the bimetallic strip 103 due to heat causes the lifting strip 104 to move downward. The push plate 105 is set... A push plate 105 is moved downwards under force at one end of the lifting bar 104. An expansion tank 101 is fixedly installed on one side of the cover 200. Two heat-conducting pipes 102 are inserted and connected to the top of the expansion tank 101. A bimetallic strip 103 is provided inside the expansion tank 101. A lifting bar 104 is inserted and connected to the bottom of the bimetallic strip 103. A push plate 105 is fixedly installed at the bottom of the lifting bar 104. A straight rack 106 is fixedly installed on one side of the push plate 105. A support plate 107 is fixedly installed on the back of the cover 200. A receiving rack 108 is fixedly installed at the bottom of the support plate 107. A lead screw 109 is rotatably mounted inside the housing 108. A threaded block 110 is threaded onto one end of the lead screw 109, and a gear 111 is fitted onto the other end of the lead screw 109. A straight rack 106 meshes with the gear 111. An extension plate 114 is fixedly mounted on one side of the threaded block 110, a displacement plate 112 is fixedly mounted on one side of the extension plate 114, and a sealing plate 113 is fixedly mounted on one side of the displacement plate 112. The outer surface of the threaded block 110 is always tightly fitted to the inner wall of the housing 108. Therefore, during the rotation of the lead screw 109, the threaded block 110 will be in close contact with the inner wall of the housing 108. The screw 109 moves smoothly back and forth inside the housing 108. The two ends of the screw 109 are respectively limited by deep groove ball bearings and rotate in place inside the housing 108. When the straight rack 106 meshes with the gear 111, it drives the screw 109 to rotate, causing the threaded block 110 to move backward at one end of the screw 109. This causes the extension plate 114 to gradually approach the vertical ventilation slot 300. After the two contacts, the vertical ventilation slot 300 can be closed, so that the vertical ventilation slot 300 can be closed in time in the cold environment, preventing the condensation generated there from melting into water droplets and dripping into the ring network box 100 and causing damage.

[0038] When the equipment inside the ring network enclosure 100 is working, it generates a large amount of heat. This heat is conducted to the interior of the two heat pipes 102, and then enters the expansion chamber 101 through the two heat pipes 102. The heat is then transferred to the surface of the bimetallic strip 103. The bimetallic strip 103 is a component made of two different metals bonded together in a certain way. Its working principle is based on the different coefficients of thermal expansion of different metals when the temperature changes, causing the bimetallic strip to bend when heated or cooled, thus generating movement. The two metals are steel and copper. Copper typically has a higher coefficient of thermal expansion than steel, so when the bimetallic strip is heated... At that time, the copper segment will expand more than the steel segment. Due to the different expansion rates of the two metals, the reaction force caused by the difference in length due to heat will cause the composite material to bend. As the temperature rises, the hot bimetallic strip 103 gradually bends and stretches, and gradually expands inside the expansion box 101, which will give the lifting bar 104 a downward push. Under the connection of the push plate 105, it will drive the straight rack 106 to move downward, thereby driving the gear 111 that meshes with it to rotate. The lead screw 109 rotates inside the housing frame 108, which will drive the extension plate 114 to move backward and gradually approach the vertical ventilation slot 300.

[0039] Preferably, the specific working process of the adaptive air duct switching component 1 is as follows: Figure 5 As shown, the adaptive air duct switching assembly 1 also includes a support plate 107, a receiving frame 108, a displacement plate 112, and an extension plate 114. The support plate 107 is fixedly mounted on the back of the cover 200. The receiving frame 108 is located at the bottom of the support plate 107. A lead screw 109 is located inside the receiving frame 108. Both ends of the lead screw 109 are supported by bearings, and a gear 111 is sleeved on one end of the lead screw 109. When the gear 111 rotates, it drives the threaded block 110 to move back and forth at one end of the lead screw 109. The extension plate 114 is fixedly mounted on one side of the displacement plate 112, and one side of the extension plate 114 is fixed to one side of the threaded block 110 for adjusting the back and forth movement of the extension plate 114. The other side of the displacement plate 112 is connected to the sealing plate 113. One side is fixed, and the movement of the extension plate 114 will drive the sealing plate 113 to move synchronously. After the straight rack 106 moves downward, it drives the gear 111 that meshes with it to rotate. The threaded block 110 moves forward at one end of the screw 109, which also drives the extension plate 114 to move forward. The sealing plate 113 and the extension plate 114 are connected by the displacement plate 112. As the extension plate 114 moves, it smoothly drives the sealing plate 113 to move. The sealing plate 113 is set on the side close to the threaded block 110. Through the meshing of the straight rack 106 and the gear 111, it is used to automatically close the vertical ventilation slot 300 when the ambient temperature inside the ring network box 100 rises, so as to prevent cold air in this area from entering the ring network box 100.

[0040] To address the issue that the ventilation opening diameter of the ventilation slots cannot be automatically adjusted, thus affecting subsequent heat dissipation efficiency, the cover 200 is designed to automatically descend to adjust the coverage area between it and the horizontal ventilation slot 400.

[0041] Preferably, the specific working process of the ventilation orifice adjustment component 2 is as follows: Figure 6As shown, the ventilation orifice adjustment assembly 2 also includes a vertical block 201, a limiting shaft 202, and a vertical plate 203. The vertical block 201 is fixedly installed at the bottom of the push plate 105. One side of the limiting shaft 202 is inserted and connected to one side of the vertical block 201. The vertical plate 203 is sleeved on one end of the limiting shaft 202. The descent of the vertical plate 203 causes the pressure ring 211 to move downward and approach the U-shaped block 212. The ventilation orifice adjustment assembly 2 also includes a first positioning shaft 204, a positioning sleeve 205, a second positioning shaft 206, and a pressure cylinder 207. One end of the first positioning shaft 204 is fixedly installed on one side of the vertical plate 203. The pressure cylinder 207 is fixedly sleeved on one end of the second positioning shaft 206. The push plate 105 is fixed to the first positioning shaft 204 via a positioning sleeve 205. A vertical block 201 is fixedly installed at the bottom of the push plate 105. A limit shaft 202 is fixedly inserted and connected to one side of the vertical block 201. A vertical plate 203 is fixedly sleeved at one end of the limit shaft 202. A first positioning shaft 204 is fixedly installed on one side of the vertical plate 203. A positioning sleeve 205 is fixedly sleeved at one end of the first positioning shaft 204. A second positioning shaft 206 is fixedly installed at the bottom of the positioning sleeve 205. A pressure cylinder 207 is fixedly sleeved at one end of the second positioning shaft 206. A pressure ring 211 is fixedly installed on the outside of the pressure cylinder 207. An embedded rod 208 is fixedly installed inside the cover 200. One end of the rod 208 is movably fitted with a force-bearing block 210. A U-shaped block 212 is fixedly installed on one side of the force-bearing block 210. A connecting rod 213 is fixedly inserted and connected to one side of the U-shaped block 212. An adjusting panel 214 is fixedly fitted on one end of the connecting rod 213. A tension spring 209 is wound around the outside of the rod 208. One end of the tension spring 209 is fixedly connected to the top of the force-bearing block 210. As the push plate 105 moves downward, the second positioning shaft 206 moves downward under the connection of the vertical plate 203. The pressure ring 211 gradually approaches the U-shaped block 212. The U-shaped block 212 transmits the force it receives to the force-bearing block 210. The force-bearing block 210 is then positioned on the rod 208. One end of 8 moves downward, and the tension spring 209 extends and stretches after being stressed. As the force-bearing block 210 moves downward, it drives the adjustment panel 214 to move downward under the connection of the U-shaped block 212. The adjustment panel 214 gradually moves downward on one side of the horizontal ventilation slot 400. The adjustment panel 214 itself completely closes the horizontal ventilation slot 400, and relies entirely on the vertical ventilation slot 300 to achieve air convection between the ring network box 100 and the outside air. When the U-shaped block 212 moves downward, the sealing plate 113 gradually approaches the vertical ventilation slot 300, and the adjustment panel 214 moves downward on one side of the horizontal ventilation slot 400, so that the horizontal ventilation slot 400 gradually opens.

[0042] After the U-shaped block 212 is subjected to force, it drives the adjustment panel 214 to move downward under the connection of the abutment rod 213. The adjustment panel 214 itself is completely in contact with the horizontal ventilation slot 400 and is completely sealed. As the adjustment panel 214 moves, the diameter of the horizontal ventilation slot 400 increases, and the air circulation area increases. The ventilation area of ​​the vertical ventilation slot 300 is larger than that of the horizontal ventilation slot 400. Closing the vertical ventilation slot 300 can reduce the energy consumption of the heating system when it is necessary to reduce the air circulation. By adjusting the opening and closing state of the ventilation slot, the air flow pattern can be improved. In a humid environment, closing the vertical ventilation slot 300 helps to reduce moisture penetration, while the required humidity level can be maintained by controlling the opening degree of the horizontal ventilation slot 400.

[0043] Preferably, the specific working process of the ventilation orifice adjustment component 2 is as follows: Figure 7 As shown, pressure rings 211 are fixedly installed on the outer surface of pressure cylinder 207. The distance between pressure cylinder 207 and U-shaped block 212 is adjusted by moving pressure cylinder 207. Ventilation aperture adjustment assembly 2 also includes embedded rod 208, tension spring 209 and force block 210. Force block 210 is movably sleeved on one end of embedded rod 208. Tension spring 209 is wrapped around the outside of embedded rod 208, and one end of tension spring 209 is fixed to the top of force block 210. Tension spring 209 extends and pushes force block 210 downward at one end of embedded rod 208. One side of U-shaped block 212 is fixed to one side of force block 210. The height of U-shaped block 212 can be adjusted by moving force block 210. This structure can automatically close vertical ventilation slot 300 and then automatically open horizontal ventilation slot 400. Without affecting heat dissipation and ventilation, it also avoids a large amount of water droplets dripping into ring network box 100.

[0044] After the temperature inside the ring network box 100 decreases, it indicates that the internal heat has been almost completely dissipated. At this time, the temperature of the bimetallic strip 103 will also gradually decrease. Under the action of thermal expansion and contraction, the bimetallic strip 103 will gradually compress and shrink, which will drive the lifting bar 104 to move upward, the height of the push plate 105 will gradually increase, and the straight rack 106 will move upward at the same time, which will drive the gear 111 to rotate clockwise. The lead screw 109 will rotate inside the housing frame 108, and the threaded block 110 will move forward at one end of the lead screw 109. With the connection of the extension plate 114, it will drive the displacement plate 112 and the sealing plate 113 to move forward. The sealing plate 113 will gradually move away from the vertical ventilation slot 300, so that the vertical ventilation slot 300 is in an open state. The vertical ventilation slot 300 can open a large ventilation aperture normally, so that hot air can convect with the outside air in time.

[0045] according to Figure 8As shown, the ventilation aperture adjustment assembly 2 also includes an abutment rod 213, which is fixedly inserted and connected to one side of the U-shaped block 212. An adjustment panel 214 is fixedly sleeved on one end of the abutment rod 213, and one side of the adjustment panel 214 is in contact with the surface of the transverse ventilation slot 400. As the adjustment panel 214 rises and falls, it is used to adjust the opening area of ​​the transverse ventilation slot 400.

[0046] When the push plate 105 moves upward, the vertical plate 203 gradually moves upward, and the pressure ring 211 gradually moves away from the U-shaped block 212. The U-shaped block 212 will lose its compressive force, which means that the tension spring 209 will also lose its compressive force, allowing the tension spring 209 to return to its initial state in time. The tension spring 209 will then compress and deform, giving the force-bearing block 210 an upward pulling force. Under the connection of the U-shaped block 212, this will also drive the adjustment panel 214 to move upward. The adjustment panel 214 gradually moves upward in the horizontal ventilation slot 400, promptly covering the horizontal ventilation slot 400. This means that at this time, the vertical ventilation slot 300 mainly dissipates the heat inside the ring network box 100. In hot environments, the ring main unit 100 can automatically close the vertical ventilation slots 300 and open the horizontal ventilation slots 400. By automatically closing the vertical ventilation slots 300, the equipment can be effectively prevented from getting too cold, thus ensuring normal operation. Closing the vertical ventilation slots 300 helps stabilize the temperature inside the ring main unit 100 and prevents frost from forming on the surface of the internal equipment. Automatically closing and opening the heat dissipation slots can help maintain the internal temperature of the ring main unit 100 within a stable range, reducing the impact of temperature fluctuations on the equipment, thereby improving the stability and service life of the equipment. When the equipment works in a relatively stable temperature environment, the rate of wear and aging will be significantly slowed down.

[0047] Working principle: Primary equipment includes circuit breakers, disconnect switches, and busbars, responsible for switching on and off and carrying high voltage / current. Secondary equipment includes measurement and control terminals and protection terminals, responsible for measurement, control, and protection. Integration means that measurement and control and protection function modules are miniaturized and directly installed on the primary equipment body, achieving compact structure, information sharing, and functional synergy. Condensation is the phenomenon of water vapor condensing on the surface of equipment when the temperature inside the cabinet is lower than the dew point temperature of the ambient air. It is one of the main culprits leading to insulation degradation, short circuits, and corrosion. The ring main unit is equipped with an intelligent temperature and humidity control device that monitors the temperature and humidity inside the unit and automatically starts the heater to control the humidity below the dew point, protecting the sensitive secondary integrated equipment from moisture corrosion and significantly reducing errors caused by condensation. Risks of malfunction, failure to operate, and data interruption exist in ring main units. In cold environments, the components inside generate significant heat during operation. As this heat accumulates, the internal temperature of the ring main unit gradually rises. Meanwhile, the ventilation slots, which connect to the outside environment, remain cool. This temperature difference makes frost easily form in these areas. Cold outside air can be transported into the unit through these slots, causing frost buildup. Frost affects heat dissipation, leading to decreased equipment efficiency. Some ring main units close the ventilation slots to avoid this phenomenon. However, directly closing the ventilation slots causes continuous heat buildup within the unit. This heat buildup leads to water vapor condensation inside the unit, increasing the frost area, accelerating the aging of electronic components, slowing their operation, increasing response time, and impacting overall system performance. Regardless of whether the ventilation slots are open or closed... Whether on or off, it remains a fixed, static state, unable to respond to real-time temperature changes within the enclosure. When the interior overheats, it cannot provide sufficient ventilation; when the temperature drops and the outside is too cold, it cannot promptly reduce the inflow of cold air to prevent frost formation. Even after the internal temperature decreases, the ventilation vents cannot automatically adjust, affecting subsequent heat dissipation efficiency. Therefore, a primary and secondary integrated ring main unit with anti-condensation function is designed. This unit can automatically and gradually adjust the ventilation vents based on the internal temperature and pressure conditions, thereby dissipating heat, preventing internal condensation, and minimizing direct cold air intrusion. The ring main unit 100 itself contains a transformer and switching equipment, integrating electrical protection, measurement, and control devices, and possesses excellent airtightness. The ring main unit 100 is equipped with a heater to maintain an internal temperature above the dew point, thus preventing water vapor from condensing into water droplets. The heater converts electrical energy into heat energy to raise the internal temperature of the ring main unit 100. During operation, the transformer dissipates heat due to copper and iron losses, causing the internal temperature of the ring main unit 100 to gradually rise. In cold seasons, the heat inside the ring main unit 100 cannot be effectively dissipated due to the enclosed space. Therefore, a vertical ventilation slot 300 is designed to facilitate air circulation. The design of the vertical ventilation slot 300 utilizes the principle of natural convection, allowing cold outside air to enter while simultaneously expelling warm internal air, creating a temperature cycle. In cold environments, the water vapor content around the vertical ventilation slot 300 is closely related to the temperature.The vertical ventilation slot 300 is located at the junction of hot and cold air, making it susceptible to the influence of external cold air. This causes its surface temperature to drop, making it easier to reach the dew point temperature. When condensation forms, it melts into water droplets upon contact with hot air, which easily drip into the ring network housing 100. When the equipment inside the ring network housing 100 is operating, it generates a large amount of heat. This heat is conducted to the interior of the two heat pipes 102, and then enters the expansion chamber 101 through the two heat pipes 102. The heat is then transferred to the surface of the bimetallic strip 103, a component made of two different metals bonded together in a specific way. Its working principle is based on the different coefficients of thermal expansion of different metals under temperature changes, allowing the bimetallic strip to expand when heated or cooled. The bimetallic strip bends, thus generating movement. The two metals are steel and copper. Copper typically has a higher coefficient of thermal expansion than steel, so when the bimetallic strip is heated, the copper section expands more than the steel section. Due to the different expansion rates of the two metals, the reaction force caused by the difference in length due to heat causes the composite material to bend. As the temperature rises, the heated bimetallic strip 103 gradually bends and stretches, expanding gradually inside the expansion box 101. This provides a downward thrust to the lifting bar 104, which, connected to the push plate 105, drives the straight rack 106 downward, thereby causing the gear 111 meshing with it to rotate. The lead screw 109 rotates inside the receiving frame 108, causing the extension plate 114 to move backward, gradually engaging with the vertical ventilation slot 30. As the push plate 105 moves downward, connected by the vertical plate 203, the second positioning shaft 206 also moves downward. The pressure ring 211 gradually approaches the U-shaped block 212, which transmits the force to the force-receiving block 210. The force-receiving block 210 then moves downward at one end of the embedded rod 208. The tension spring 209 extends under the force. As the force-receiving block 210 moves downward, connected by the U-shaped block 212, the adjustment panel 214 moves downward. The adjustment panel 214 gradually moves downward on one side of the horizontal ventilation slot 400. The adjustment panel 214 completely seals off the horizontal ventilation slot 400, relying entirely on the vertical ventilation slot 300 to achieve air exchange between the ring network box 100 and the outside air. In a convective manner, as the U-shaped block 212 moves downward, the sealing plate 113 gradually approaches the vertical ventilation slot 300. Meanwhile, the adjusting panel 214 moves downward on one side of the horizontal ventilation slot 400, gradually opening the horizontal ventilation slot 400. Under pressure, the U-shaped block 212, connected by the abutment rod 213, moves the adjusting panel 214 downward. The adjusting panel 214 itself is completely in contact with the horizontal ventilation slot 400 and is completely sealed. As the adjusting panel 214 moves, the diameter of the open horizontal ventilation slot 400 increases, thus increasing the airflow area. The ventilation area of ​​the vertical ventilation slot 300 is larger than that of the horizontal ventilation slot 400. Closing the vertical ventilation slot 300 can reduce airflow when necessary.To reduce the energy consumption of the heating system, the airflow pattern can be improved by adjusting the opening and closing of the ventilation slots. In humid environments, closing the vertical ventilation slots 300 helps reduce moisture penetration. Simultaneously, the required humidity level is maintained by controlling the opening degree of the horizontal ventilation slots 400. When the push plate 105 moves upward, the vertical plate 203 gradually moves upward, and the pressure ring 211 gradually moves away from the U-shaped block 212. The U-shaped block 212 loses its compressive force, meaning the tension spring 209 loses its compressive force, allowing the tension spring 209 to return to its initial state in time. The tension spring 209 then compresses and deforms, exerting an upward pulling force on the force-bearing block 210. Connected by the U-shaped block 212, this also drives the adjustment panel 214 to move upward. The adjustment panel 214 gradually moves upward within the horizontal ventilation slots 400, and... The fact that the horizontal ventilation slots 400 are covered at certain times indicates that the vertical ventilation slots 300 primarily dissipate heat from the ring network housing 100. In cold environments, the ring network housing 100 automatically closes the vertical ventilation slots 300 and opens the horizontal ventilation slots 400. Automatically closing the vertical ventilation slots 300 effectively prevents the equipment from overcooling, ensuring normal operation. Closing the vertical ventilation slots 300 helps stabilize the temperature inside the ring network housing 100, preventing frost buildup on the internal equipment surfaces. The automatic closing and opening of the cooling slots helps maintain a stable temperature inside the ring network housing 100, reducing the impact of temperature fluctuations and improving equipment stability and lifespan. When the equipment operates in a more stable temperature environment, the rate of wear and aging is significantly slowed.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 primary and secondary fusion ring network box with anti-condensation function, characterized in that, include: Ring network enclosure (100); The box cover (200) has multiple vertical ventilation slots (300) on one side and a horizontal ventilation slot (400) on one side. An adaptive air duct switching component (1) is provided on the back of the box cover (200). The adaptive air duct switching component (1) is provided with a thermal bimetallic strip (103) and a sealing plate (113). It is used to automatically close the vertical ventilation slot (300) when the ambient temperature inside the ring network box (100) rises, so as to prevent cold air in this area from entering the ring network box (100). It can automatically and gradually close the vertical ventilation slot (300) according to the temperature and pressure difference inside the ring network box (100). Ventilation orifice adjustment assembly (2) is set at the bottom of adaptive air duct switching assembly (1). The ventilation orifice adjustment assembly (2) is provided with pressure ring (211), U-shaped block (212), abutment rod (213), tension spring (209), force block (210), embedding rod (208) and adjustment panel (214). The pressure ring (211) lowers to apply a downward force to the U-shaped block (212) to automatically adjust the ventilation orifice of the transverse ventilation slot (400). As the adjustment panel (214) rises and falls, it is used to adjust the opening area of ​​the transverse ventilation slot (400). The tension spring (209) extends and pushes the force block (210) to move downward at one end of the embedding rod (208). One side of the U-shaped block (212) is fixed to one side of the force block (210). The height of the U-shaped block (212) is adjusted by the movement of the force block (210). After the U-shaped block (212) is subjected to force, under the connection of the abutment rod (213), it drives the adjustment panel (214) to move downward. The adjustment panel (214) itself is completely in contact with the horizontal ventilation slot (400) and is completely sealed. As the adjustment panel (214) moves, the diameter of the horizontal ventilation slot (400) becomes larger and larger, and the air circulation area becomes larger. The ventilation area of ​​the vertical ventilation slot (300) is larger than that of the horizontal ventilation slot (400), so it is necessary to reduce the air circulation and close the vertical ventilation slot (300). By adjusting the opening and closing state of the ventilation slot, the air flow pattern is improved. In a humid environment, closing the vertical ventilation slot (300) reduces the infiltration of moisture. At the same time, the required humidity level is maintained by controlling the opening degree of the horizontal ventilation slot (400).

2. The primary and secondary fusion ring network box with anti-condensation function according to claim 1, characterized in that: The adaptive air duct switching assembly (1) further includes a straight rack (106), a lead screw (109), a threaded block (110), and a gear (111). The straight rack (106) meshes with the gear (111), and the threaded block (110) is threaded onto one end of the lead screw (109). The adaptive air duct switching assembly (1) also includes an expansion tank (101), two heat-conducting pipes (102), a lifting bar (104), and a push plate (105). The expansion tank (101) is fixedly mounted on the back of the cover (200), and the two... One end of the heat pipe (102) is inserted and connected to the top of the expansion tank (101) to conduct the heat generated in the ring box (100) to the surface of the bimetallic strip (103) through the heat pipe (102) so that it expands due to heat. One end of the lifting bar (104) is inserted and connected to the bottom of the bimetallic strip (103). The expansion of the bimetallic strip (103) due to heat causes the lifting bar (104) to move downward. The push plate (105) is set at one end of the lifting bar (104). The push plate (105) moves downward under force.

3. The primary and secondary fusion ring network box with anti-condensation function according to claim 1, characterized in that: The extension plate (114) is fixedly installed on one side of the displacement plate (112), and one side of the extension plate (114) is fixed to one side of the threaded block (110) for adjusting the forward and backward movement of the extension plate (114). The other side of the displacement plate (112) is fixed to one side of the sealing plate (113). The movement of the extension plate (114) will drive the sealing plate (113) to move synchronously.

4. The primary and secondary fusion ring network box with anti-condensation function according to claim 1, characterized in that: The ventilation aperture adjustment assembly (2) also includes a vertical block (201), a limiting shaft (202), and a vertical plate (203). The vertical block (201) is fixedly installed at the bottom of the push plate (105). One side of the limiting shaft (202) is inserted and connected to one side of the vertical block (201). The vertical plate (203) is sleeved on one end of the limiting shaft (202). The descent of the vertical plate (203) causes the pressure ring (211) to move downward and approach the U-shaped block (212).

5. The primary and secondary fusion ring network box with anti-condensation function according to claim 1, characterized in that: The ventilation aperture adjustment assembly (2) further includes a first positioning shaft (204), a positioning sleeve (205), a second positioning shaft (206), and a pressure cylinder (207). One end of the first positioning shaft (204) is fixedly disposed on one side of the vertical plate (203). The pressure cylinder (207) is fixedly sleeved on one end of the second positioning shaft (206) and is fixed to the first positioning shaft (204) through the positioning sleeve (205).

6. The primary and secondary fusion ring network box with anti-condensation function according to claim 5, characterized in that: The pressure rings (211) are fixedly installed on the outer surface of the pressure cylinder (207), and the distance between the pressure cylinder (207) and the U-shaped block (212) is adjusted by moving the pressure cylinder (207).

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