Intelligent primary and secondary fusion ring main unit

Abstract

The invention relates to the technical field of ring main units, and discloses an intelligent primary and secondary fusion ring main unit which comprises an outer box and a plurality of inner boxes arranged in the outer box, a box top cover, box side walls, a box bottom tray and a box back wall of the outer box are all of hollow structures, and a plurality of exhaust fans are arranged on an inner plate of the box top cover; each exhaust fan is located above an air outlet in the top of the corresponding inner box, a cavity in the box top cover is divided into a plurality of independent upper ventilation cavities through a plurality of upper partition plates, each exhaust fan is upwards communicated into different ventilation cavities, and the cavity in the box back wall is divided into a plurality of independent rear ventilation cavities through rear partition plates; the rear ventilation cavity in each box back wall is communicated with the corresponding upper ventilation cavity in the box top cover to form an independent ventilation cavity, and a gas detection device is arranged in each ventilation cavity. The system is provided with a block-type ventilation and heat dissipation system and a block-type detection system, is good in waterproof, moistureproof, anti-collision and anti-creeping effects, and optimizes the wiring layout.

Description

Technical Field

[0001] The present invention relates to the technical field of ring main units, and specifically to an intelligent primary-secondary integrated ring main unit. Background Art

[0002] In the power distribution system, as an important power distribution device, the ring main unit undertakes the key tasks of distributing and controlling electric energy. In traditional ring main units, primary equipment is mainly responsible for the transmission and distribution of electric energy, while secondary equipment focuses on the control, protection, and monitoring of primary equipment. The intelligent primary-secondary integrated ring main unit deeply integrates primary equipment and secondary equipment, and through optimizing the internal structure and adopting advanced communication and intelligent control technologies, realizes the miniaturization, intelligence, and integration of the equipment.

[0003] In the prior art, a patent with the publication number of CN116937343B discloses an intelligent primary-secondary integrated ring main unit, which has the effect of filtering impurities and moisture in the air entering the box body. By analyzing the prior art, we find that the ring main unit still has the following defects: the ventilation and heat dissipation system is imperfect and cannot accurately dissipate heat in different areas; there is a lack of detection components for internal faults and it cannot be detected and remedied in time before or during a fault; the overall waterproof, moisture-proof, anti-collision, anti-electric leakage, and wiring layout effects still need to be further improved. Summary of the Invention

[0004] (I) Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides an intelligent primary-secondary integrated ring main unit, which has the advantages of a block-type ventilation and heat dissipation system, a block-type detection system, good waterproof, moisture-proof, anti-collision, and anti-electric leakage effects, and a reasonable wiring layout, and solves the problems in the prior art that the ventilation and heat dissipation system is imperfect and cannot accurately dissipate heat in different areas, there is a lack of detection components for internal faults and it cannot be detected and remedied in time before or during a fault, and the overall waterproof, moisture-proof, anti-collision, anti-electric leakage, and wiring layout effects still need to be further improved.

[0005] (II) Technical Solutions To achieve the above object, the present invention provides the following technical solutions: An intelligent primary-secondary integrated ring main cabinet, comprising an outer cabinet and a plurality of inner cabinets arranged inside the outer cabinet. The outer cabinet is composed of a cabinet top cover, a front door, cabinet side walls, a cabinet bottom tray, and a cabinet back wall. The cabinet top cover, cabinet side walls, cabinet bottom tray, and cabinet back wall are all hollow structures. On the inner plate of the cabinet top cover, a plurality of exhaust fans are provided, and each exhaust fan is located above the air outlet at the top of the corresponding inner cabinet. The cavity inside the cabinet top cover is divided into a plurality of separate upper ventilation cavities by arranging a plurality of upper partition plates. Each exhaust fan communicates upward with a different ventilation cavity. The cavity inside the cabinet back wall is divided into a plurality of separate rear ventilation cavities by a vertical rear partition plate. The rear ventilation cavities inside each cabinet back wall communicate with the corresponding upper ventilation cavities inside the cabinet top cover to form a separate ventilation cavity body. At the bottom of the outer plate of the cabinet back wall, a back wall air outlet is provided, and a gas detection device is arranged in each ventilation cavity body; The incoming line and the air intake position of the ring main cabinet are both arranged inside the cabinet bottom tray. On the inner plate of the cabinet back wall, a rear wiring hole is provided. The circuit passes upward through the cabinet bottom tray, then through the rear ventilation cavity, and then communicates with the inner cabinet through the rear wiring hole. The cabinet bottom tray is provided with bottom wall air inlets on both sides and a bottom wall air outlet on the upper surface. The bottom wall air outlet is located below the air intake at the bottom of the inner cabinet.

[0006] Preferably, a wiring anti-dust device is arranged on the inner side of the cabinet back wall at the position of the rear wiring hole. The wiring anti-dust device includes a baffle that moves up and down at the rear wiring hole. The baffle is stuck and slides inside the sliding seats on both sides. A connecting plate is fixedly connected to the baffle, and a vertical guide post is fixed on the connecting plate. The other end of the guide post passes through an adjusting block, and a spring is arranged between the adjusting block and the connecting plate.

[0007] Preferably, a flow rate adjusting device is also arranged on the outer side of the cabinet back wall at the position of the rear wiring hole. Two vertical partition plates are arranged in each rear ventilation cavity inside the cabinet back wall. Each partition plate divides a rear ventilation cavity into three separate flow areas. The rear wiring hole communicates with the middle flow area. The flow rate adjusting device includes: A direct slider, connected to the baffle, and two symmetric side push rods are rotatably connected to the direct slider; A side push rod, one end of which is rotatably connected to the liftable direct slider, and the other end is rotatably connected to a diversion baffle; A diversion baffle, an opening groove is arranged on each partition plate, and a diversion baffle with the bottom rotatably connected to the partition plate is arranged at the position of the opening groove; When the baffle rises, it drives the direct slider to rise, thereby using the side push rod to drive the diversion baffle to rotate and open to both sides. Since the height of the baffle lift is determined by the number of wires, the air flow rate in the middle flow area can be controlled according to the number of wires.

[0008] Preferably, a cylinder is further arranged inside the cable protection and dust prevention device. The cylinder is fixed on the back wall of the box, and the end of the push-pull rod of the cylinder is connected to the adjusting block. The flow rate adjusting device further includes a comb-shaped card, which slides up and down in the rear ventilation cavity. A push rod is arranged below the comb-shaped card, and comb-shaped card slots corresponding to the push rod are arranged at the same horizontal position in the three flow areas of one rear ventilation cavity. When the gas detection device detects abnormal gas components in the air, it controls the cylinder to push the adjusting block upward, thereby driving the baffle to rise. The rising of the baffle drives the direct slider to rise, and the rising of the direct slider pushes the push rod to lift. After the comb-shaped card is lifted into the comb-shaped card slot, the three flow areas are blocked.

[0009] Preferably, side baffles are also slidably connected to both sides of the rear cable hole. Limit blocks are arranged on the side baffles. Under normal conditions, the limit blocks are blocked by the side of the baffle and hidden in the sliding seat. When the baffle rises to a position where it is separated from the limit blocks, the side baffles pop out from both sides under the action of springs to block the rear cable hole.

[0010] Preferably, the direct slider is connected to the baffle through a vertical push rod and an indirect slider. The baffle is fixedly connected to the back of the baffle. Both ends of the vertical push rod are rotatably connected to the indirect slider and the direct slider respectively. The indirect slider and the direct slider are both vertically slid on the inner plate of the back wall of the box.

[0011] Preferably, an elastic soft pad is arranged at the bottom of the baffle, and the bottom edge of the elastic soft pad is wavy.

[0012] Preferably, temperature sensors are respectively arranged in each inner box, and the wind speed of the corresponding exhaust fan is controlled through the temperature sensors.

[0013] Preferably, the box top cover, the front door, the box side wall, the box bottom tray and the box back wall are all double-layer combined hollow structures, where the inner layer is an insulating plastic board and the outer layer is a metal board plated with an insulating layer.

[0014] Preferably, the gas detection device is any at least one of an electrochemical gas sensor, a semiconductor gas sensor, an infrared absorption gas analyzer and a photoionization gas sensor.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides an intelligent primary-secondary integrated ring main unit box, which has the following beneficial effects: 1. The intelligent primary-secondary integrated ring main cabinet sets the box top cover and the box back wall as a double-layer hollow structure, enabling the ventilation system to intake air upward from the bottom tray of the box. After passing through the outer box, the air reaches the exhaust fan at the top. The exhaust fan guides the gases discharged from different outer boxes into different ventilation cavities, and each gas detection device detects the gas components in the corresponding cavity, so as to accurately determine the location of charring in case of a fire. Moreover, different exhaust fans can be controlled according to the values of the temperature sensors in each inner box, thereby controlling the heat dissipation power in a square manner according to the heat generation amount and improving the heat dissipation effect.

[0016] 2. The intelligent primary-secondary integrated ring main cabinet sets a ventilation system that goes from bottom to top and then to bottom, with the air inlets located on both sides of the bottom and the air outlets located at the rear side of the bottom, avoiding rainwater intrusion when set at the top, expanding the circulation range of the ventilation system, and improving the heat dissipation efficiency.

[0017] 3. The intelligent primary-secondary integrated ring main cabinet sets the ventilation system, and sets the box top cover, the front door, the box side walls, the box bottom tray, and the box back wall as double-layer hollow structures. On the one hand, it improves the anti-collision ability when being externally impacted, avoiding direct damage to the inner box when indenting inward. On the other hand, the double-layer structure improves the moisture-proof effect, preventing the inner wall from directly contacting the outside world and avoiding moisture condensation on the inner wall. It also enhances the insulation effect. The double-layer structure can use insulating materials with low strength in the inner layer and metal materials with strong anti-corrosion effects in the outer layer. At the same time, the hollow structure facilitates the wiring of wires in the cavity.

[0018] 4. The intelligent primary-secondary integrated ring main cabinet sets a wire arrangement dust-proof device and a flow rate adjustment device on both sides of the inner layer of the box back wall. The baffle adjusts the flow rate in the middle circulation area during the lifting process. When the number of wires increases, the flow rate in the middle circulation area is controlled to increase. A large number of wires means large gaps between the wires, and dust is more likely to enter. When the flow rate increases, the dust will be driven out by the airflow, and the dust cannot enter the rear wiring holes against the airflow. Combining the wiring port and the air outlet improves the dust-proof effect.

[0019] 5. The intelligent primary-secondary integrated ring main cabinet sets a cylinder on the wire arrangement dust-proof device and a comb-shaped card and a comb-shaped card slot on the flow rate adjustment device. When the gas detection device detects abnormal gas components in the air, it controls the cylinder to push the adjustment block upward, thereby driving the baffle to rise. The rising of the baffle drives the direct slider to rise, and the rising of the direct slider pushes the ejector rod to lift. After the comb-shaped card is lifted into the comb-shaped card slot, it blocks three circulation areas, and controls the intake port in the box bottom tray to be blocked, preventing the gas circulation from bringing in oxygen to assist combustion after a fire, providing time for maintenance workers and firefighters to arrive. Description of the Drawings

[0020] Figure 1Stereoscopic view of the overall structure of the present invention installed on the base.

[0021] Figure 2 First perspective stereoscopic view of the outer box of the present invention installed on the base (viewed from the lower front upward).

[0022] Figure 3 Second perspective stereoscopic view of the outer box of the present invention installed on the base (viewed from the upper front downward).

[0023] Figure 4 Stereoscopic view of the structure of the bottom tray of the present invention.

[0024] Figure 5 Stereoscopic view of the structure of the top cover of the present invention.

[0025] Figure 6 Stereoscopic view of the inner structure of the back wall of the box of the present invention.

[0026] Figure 7 Schematic diagram of the structure inside the cavity of the back wall of the box of the present invention.

[0027] Figure 8 Stereoscopic view of the outer structure of the back wall of the box of the present invention.

[0028] Figure 9 Schematic diagram of the structure of the wire arrangement dust-proof device on the inner plate of the back wall of the box of the present invention.

[0029] Figure 10 Schematic diagram of the structure of the flow rate adjustment device on the inner plate of the back wall of the box of the present invention.

[0030] Figure 11 Schematic diagram of the structure of the plugging device when it is open.

[0031] Figure 12 Schematic diagram of the structure of the plugging device when it is closed.

[0032] Figure 13 Schematic diagram of the structure when the inner baffle of the rear wire hole of the present invention is hidden.

[0033] Figure 14 Schematic diagram of the structure when the inner baffle of the rear wire hole of the present invention is unfolded.

[0034] In the figure: 1. Inner box; 2. Outer box; 21. Box top cover; 22. Front door; 23. Box side wall; 24. Box bottom tray; 25. Box back wall; 3. Base; 211. Exhaust fan; 212. Upper partition board; 241. Bottom wall air inlet; 242. Bottom wall air outlet; 243. Lower partition board; 244. Waterproof slope; 251. Rear wire hole; 252. Wire arrangement dust-proof device; 253. Rear partition board; 254. Partition board; 255. Flow rate adjustment device; 256. Back wall air outlet; 2511. Side baffle; 2512. Limit block; 2521. Baffle; 2522. Slide base; 2523. Connecting plate; 2524. Guide post; 2525. Adjusting block; 2526. Cylinder; 2541. Opening groove; 2551. Indirect slider; 2552. Vertical push rod; 2553. Direct slider; 2554. Side push rod; 2555. Drainage baffle; 2556. Comb-shaped card; 2557. Thumb rod; 2558. Comb-shaped card slot. Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0037] In addition, fixed connection means that after the parts or components are fixed, there is no relative movement; transmission connection means a connection method that transmits mechanical motion or torque to other working parts through transmission parts; sliding connection means a connection method in which two objects are in contact but not fixed and can slide relative to each other; rotational connection means a connection method in which two objects are in contact but not fixed and can rotate relative to each other.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0039] Embodiment 1: This embodiment provides an intelligent primary-secondary integrated ring main unit box, which has the following technical features.

[0040] Please refer to Figures 1 - 14 , an intelligent primary-secondary integrated ring main unit box, including an outer box 2 and a plurality of inner boxes 1 arranged inside the outer box 2. The outer box 2 is composed of a box top cover 21, a front door 22, box side walls 23, a box bottom tray 24 and a box back wall 25. The box top cover 21, the box side walls 23, the box bottom tray 24 and the box back wall 25 are all hollow structures. A plurality of exhaust fans 211 are arranged on the inner plate of the box top cover 21, and each exhaust fan 211 is located above the top air outlet of the corresponding inner box 1. The cavity inside the box top cover 21 is divided into a plurality of separate upper ventilation cavities by arranging a plurality of upper partition plates 212. Each exhaust fan 211 communicates upward with different ventilation cavities. The cavity inside the box back wall 25 is divided into a plurality of separate rear ventilation cavities by a vertical rear partition plate 253. The rear ventilation cavities inside each box back wall 25 are communicated with the corresponding upper ventilation cavities inside the box top cover 21 to form separate ventilation cavities. A back wall air outlet 256 is arranged at the bottom of the outer plate of the box back wall 25, and gas detection devices are respectively arranged inside each ventilation cavity; The incoming line and the air intake position of the ring main unit box are both arranged inside the box bottom tray 24. A rear wiring hole 251 is arranged on the inner plate of the box back wall 25. The line passes through the box bottom tray 24 upward, passes through the rear ventilation cavity and is connected to the inside of the inner box 1 through the rear wiring hole 251. The box bottom tray 24 is provided with bottom wall air inlets 241 on both sides and a bottom wall air outlet 242 on the upper surface. The bottom wall air outlet 242 is located below the bottom air intake of the inner box 1.

[0041] It should be noted that the outer box 2 is arranged above the base 3. The base 3 is higher than the ground, and the edge of the base 3 is slightly larger than the edge of the box bottom tray 24 Furthermore, a wiring anti-dust device 252 is arranged on the inner side of the box back wall 25 at the position of the rear wiring hole 251. The wiring anti-dust device 252 includes a baffle 2521 that moves up and down at the rear wiring hole 251. The baffle 2521 slides in the sliding seats 2522 on both sides. A connecting plate 2523 is fixedly connected to the baffle 2521. A vertical guide post 2524 is fixed on the connecting plate 2523. The other end of the guide post 2524 passes through the adjusting block 2525, and a spring is arranged between the adjusting block 2525 and the connecting plate 2523.

[0042] Furthermore, a flow rate adjusting device 255 is also arranged on the outer side of the box back wall 25 at the position of the rear wiring hole 251. Two vertical partition plates 254 are arranged inside each rear ventilation cavity inside the box back wall 25. Each partition plate 254 divides a rear ventilation cavity into three separate flow areas. The rear wiring hole 251 is communicated with the middle flow area. The flow rate adjusting device 255 includes: The direct slider 2553 is connected to the baffle 2521, and two symmetrical side push rods 2554 are rotatably connected to the direct slider 2553; One end of the side push rod 2554 is rotatably connected to the liftable direct slider 2553, and the other end is rotatably connected to the drainage baffle 2555; For the drainage baffle 2555, an opening groove 2541 is provided on each partition board 254, and the drainage baffle 2555 with the bottom rotatably connected to the partition board 254 is arranged at the position of the opening groove 2541; When the baffle 2521 rises, it drives the direct slider 2553 to rise, thereby driving the drainage baffle 2555 to rotate and open to both sides by using the side push rod 2554. Since the lifting height of the baffle 2521 is determined by the number of wires, the air flow velocity in the middle circulation area can be controlled according to the number of wires.

[0043] Furthermore, the gas detection device is any at least one of an electrochemical gas sensor, a semiconductor gas sensor, an infrared absorption gas analyzer, and a photoionization gas sensor. The electrochemical gas sensor works based on the principle of chemical reactions. When detecting acidic gases such as sulfur dioxide and nitrogen dioxide generated by the short-circuit combustion of the ring main unit, it has significant advantages. These gases react with the internal electrolyte of the sensor to generate a current signal proportional to the gas concentration. By detecting the magnitude of the current, the gas concentration can be accurately determined. This sensor has high precision and good selectivity, can effectively avoid interference from other gases, and accurately detect the target gas, providing a reliable basis for the fault judgment of the ring main unit; The semiconductor gas sensor uses the characteristic that the resistance value changes after the semiconductor contacts the gas to detect. Gases such as carbon monoxide generated by the short-circuit combustion of the ring main unit will cause gas molecules to be adsorbed on the semiconductor surface, thereby changing the resistance value. By measuring the resistance change, the carbon monoxide concentration can be quickly obtained. It has low cost and fast response, can respond to the change of the gas concentration in the ring main unit in a short time, and issue an early warning signal in a timely manner. However, its disadvantage is poor selectivity and it is easily affected by other gases; The infrared absorption gas analyzer, each gas has a unique infrared absorption spectrum. When infrared rays pass through the environment in the ring main unit containing gases generated by short-circuit combustion such as carbon dioxide, infrared rays of a specific wavelength will be absorbed by carbon dioxide. By detecting the change in the intensity of the infrared rays before and after absorption, the concentration of carbon dioxide can be accurately analyzed, and it can also be used to detect other characteristic gases. This analyzer has good stability and high precision, can operate stably for a long time, and provides accurate data for the gas detection of the ring main unit, but the price is relatively high; The photoionization gas sensor can detect volatile organic compounds (VOCs) generated by the short-circuit combustion of the ring main unit. It uses ultraviolet rays to irradiate the gas to ionize the gas molecules, and the generated ion current is related to the gas concentration. By detecting the ion current, the VOCs concentration is determined. This sensor has high sensitivity, can detect extremely low concentrations of volatile organic compounds, and can quickly discover early fault hazards in the ring main unit.

[0044] Further provided, a cylinder 2526 is also provided inside the cable anti-dust device 252. The cylinder 2526 is fixed on the back wall 25 of the box. The end of the push-pull rod of the cylinder 2526 is connected to the adjusting block 2525. The flow rate adjusting device 255 further includes a comb-shaped card 2556. The comb-shaped card 2556 slides up and down in the rear ventilation cavity. A push rod 2557 is provided below the comb-shaped card 2556. Comb-shaped card slots 2558 corresponding to the push rod 2557 are provided at the same horizontal position in the three flow areas of a rear ventilation cavity. When the gas detection device detects abnormal gas components in the air, the cylinder 2526 is controlled to push the adjusting block 2525 upward, thereby driving the baffle 2521 to rise. The rising of the baffle 2521 drives the direct slider 2553 to rise. The rising of the direct slider 2553 pushes the push rod 2557 to lift. After the comb-shaped card 2556 is lifted into the comb-shaped card slot 2558, the three flow areas are blocked.

[0045] Further provided, side baffles 2511 are also slidably connected to both sides of the rear cable hole 251. Limit blocks 2512 are provided on the side baffles 2511. Under normal conditions, the limit blocks 2512 are blocked by the side of the baffle 2521 and hidden in the sliding seat 2522. When the baffle 2521 rises to a position where it disengages from the limit block 2512, the side baffles 2511 pop out from both sides under the action of the spring to block the rear cable hole 251.

[0046] It should be noted that the side baffle 2511 is a soft elastic pad and can fit on the line when blocking the rear cable hole 251. Or, the side baffle 2511 is composed of multiple freely sliding sliding blocks, and the edge shape of the side baffle 2511 can be changed according to the shape of the line when blocking the rear cable hole 251, so as to fit more closely.

[0047] Further provided, the direct slider 2553 is connected to the baffle 2521 through a vertical push rod 2552 and an indirect slider 2551. The baffle 2521 is fixedly connected to the back of the baffle 2521. Both ends of the vertical push rod 2552 are rotatably connected to the indirect slider 2551 and the direct slider 2553 respectively. The indirect slider 2551 and the direct slider 2553 are both vertically slid on the inner plate of the back wall 25 of the box.

[0048] It should be noted that the direct slider 2553, the vertical push rod 2552 and the indirect slider 2551 are located in the middle flow area of the three flow areas. The diversion baffle 2555 rotates to both sides, which means rotating into the two flow areas on both sides, so as to intercept the air flow in the two side flow areas into the middle flow area, thereby increasing the flow rate in the middle flow area when the lines in the rear cable hole 251 increase, and achieving the anti-dust effect.

[0049] It should also be noted that the vertical push rod 2552 and the side push rod 2554 are elastic connecting rods. The elastic connecting rod is composed of two sleeve rods that are sleeved with each other and slide relative to each other. Springs are also arranged on the outer sides of the two relatively sliding sleeve rods, so that the elastic connecting rod has the functions of telescoping and elastic effect while ensuring verticality.

[0050] Furthermore, an elastic soft pad is arranged at the bottom of the baffle 2521, and the bottom edge of the elastic soft pad is wavy.

[0051] Furthermore, temperature sensors are respectively arranged in each inner box 1, and the power of the corresponding exhaust fan 211 is controlled through the temperature sensors, so as to control the wind speed of the exhaust fan 211.

[0052] Furthermore, the box top cover 21, the front door 22, the box side wall 23, the box bottom tray 24 and the box back wall 25 are all double-layer combined hollow structures, wherein the inner layer is an insulating plastic board and the outer layer is a metal board plated with an insulating layer.

[0053] Furthermore, the top of the box top cover 21 is a triangular inclined top.

[0054] Furthermore, the cavity of the box bottom tray 24 is divided into multiple separate lower ventilation cavities by the lower partition board 243. Waterproof slopes 244 are arranged at the positions of the bottom wall air inlets 241 of each lower ventilation cavity. An electronic switch device is arranged at the bottom wall air inlet 241. When the gas detection device detects abnormal gas components in the air, the electronic switch device is controlled to block the bottom wall air inlet 241.

[0055] It should be noted that the box bottom tray 24 is provided with inlet and outlet holes, and wiring holes are arranged at the positions of the bottom wall air outlets 242 corresponding to the inner cavity of the box back wall 25.

[0056] It should be noted that the electronic switch device includes a comb-shaped card and a comb-shaped card slot. The comb-shaped card is connected to the push rod of the cylinder. When the gas detection device detects abnormal gas components in the air, the cylinder pushes the comb-shaped card to make it stuck in the comb-shaped card slot, so as to block the bottom wall air inlet 241.

[0057] Furthermore, the inner plate of the box back wall 25 is composed of multiple separate plates, and each plate is detachably installed on the rear partition board 253, so as to facilitate the installation of circuits.

[0058] In summary, for this intelligent primary-secondary integrated ring main cabinet, by setting the box top cover 21 and the box back wall 25 as double-layer hollow structures, the ventilation system intakes air upward from the box bottom tray 24, reaches the exhaust fan 211 at the top after passing through the outer box 2. The exhaust fan 211 guides the gases discharged from different outer boxes 2 into different ventilation cavities, and uses each gas detection device to detect the gas components in the corresponding cavities, so as to accurately judge the charred position in case of a fire. Moreover, different exhaust fans 211 can be controlled according to the values of the temperature sensors in each inner box 1, thus controlling the heat dissipation power in a square manner according to the heat generation amount and improving the heat dissipation effect.

[0059] For this intelligent primary-secondary integrated ring main cabinet, by setting a ventilation system that goes from bottom to top and then back down, the air intake ports are located on both sides of the bottom, and the air outlet ports are located at the rear side of the bottom, avoiding rainwater intrusion when set at the top, and expanding the circulation range of the ventilation system, thus improving the heat dissipation efficiency.

[0060] For this intelligent primary-secondary integrated ring main cabinet, by setting this ventilation system, the box top cover 21, the front door 22, the box side wall 23, the box bottom tray 24, and the box back wall 25 are all set as double-layer hollow structures. On the one hand, it improves the anti-collision ability when being impacted externally, avoiding directly damaging the inner box 1 when indenting inward. On the other hand, the double-layer structure improves the moisture-proof effect, preventing the inner wall from directly contacting the outside world and avoiding the inner wall getting wet due to water vapor condensation. It also enhances the insulation effect. The double-layer structure can use insulating materials with low strength in the inner layer and metal materials with strong anti-corrosion effects in the outer layer. At the same time, the hollow structure facilitates the wiring of wires in the cavity.

[0061] For this intelligent primary-secondary integrated ring main cabinet, by setting a wire arrangement dust-proof device 252 and a flow rate regulating device 255 on both sides of the inner layer of the box back wall 25, the flow rate in the middle circulation area is adjusted during the lifting process of the baffle 2521. When the number of wires increases, the flow rate in the middle circulation area is controlled to increase. A larger number of wires means larger gaps between the wires, and dust is more likely to enter. When the flow rate increases, the dust will be carried out by the airflow, and the dust cannot enter the rear wiring hole 251 against the airflow. Combining the wiring port and the air outlet port improves the dust-proof effect.

[0062] In this intelligent primary-secondary integrated ring main unit, a cylinder 2526 is provided on the wire arrangement dust-proof device 252, and a comb-shaped card 2556 and a comb-shaped card slot 2558 are provided on the flow rate adjustment device 255. When the gas detection device detects abnormal gas components in the air, it controls the cylinder 2526 to push the adjustment block 2525 upward, thereby driving the baffle 2521 to rise. The rise of the baffle 2521 drives the direct slider 2553 to rise. The rise of the direct slider 2553 pushes the ejector rod 2557 to lift. After the comb-shaped card 2556 is lifted into the comb-shaped card slot 2558, it seals three flow areas, and controls the bottom tray 24 of the box to seal the air inlet, avoiding the gas flow bringing in oxygen to assist combustion after a fire, and providing time for maintenance workers and firefighters to arrive.

[0063] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0064] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent primary-secondary fusion ring network box, comprising an outer box (2) and a plurality of inner boxes (1) arranged in the outer box (2), wherein the outer box (2) is composed of a box top cover (21), a front door (22), a box side wall (23), a box bottom tray (24) and a box back wall (25), characterized in that: The box top cover (21), box side walls (23), box bottom tray (24) and box back wall (25) are all hollow structures. A plurality of exhaust fans (211) are arranged on the inner plate of the box top cover (21). Each exhaust fan (211) is located above the corresponding air outlet at the top of the inner box (1). The cavity in the box top cover (21) is divided into a plurality of separate upper ventilation cavities by arranging a plurality of upper partition plates (212). Each exhaust fan (211) is upwardly connected to a different ventilation cavity. The cavity in the box back wall (25) is divided into a plurality of separate rear ventilation cavities by a vertical rear partition plate (253). The rear ventilation cavity in each box back wall (25) is connected to the corresponding upper ventilation cavity in the box top cover (21) to form a separate ventilation cavity. A back wall air outlet (256) is arranged at the bottom of the outer plate of the box back wall (25). A gas detection device is arranged in each ventilation cavity. The inlet and air inlet positions of the ring network box are both arranged in the bottom tray (24); a rear cable hole (251) is arranged on the inner plate of the back wall (25) of the box; the line passes through the bottom tray (24) upward through the rear ventilation cavity and is connected to the inner box (1) from the rear cable hole (251); the bottom tray (24) is provided with bottom wall air inlets (241) on both sides and a bottom wall air outlet (242) on the upper surface; the bottom wall air outlet (242) is located below the bottom air inlet of the inner box (1).

2. According to claim 1, the intelligent primary and secondary fusion ring network box is characterized in that: A cable dust prevention device (252) is provided on the inner side of the rear cable hole (251) on the back wall (25) of the box. The cable dust prevention device (252) comprises a baffle (2521). The baffle (2521) slides in the slide seats (2522) on both sides. A connecting plate (2523) is fixedly connected to the baffle (2521). A vertical guide column (2524) is fixed to the connecting plate (2523). The other end of the guide column (2524) passes through an adjusting block (2525). A spring is provided between the adjusting block (2525) and the connecting plate (2523).

3. The intelligent primary and secondary fusion ring network box according to claim 2 is characterized in that: A flow rate regulating device (255) is further provided on the outer side of the rear wiring hole (251) on the box back wall (25), and two vertical partition plates (254) are provided in each rear ventilation cavity in the box back wall (25), and each partition plate (254) divides a rear ventilation cavity into three separate flow areas. The rear wiring hole (251) is connected to the flow area at the middle position. The flow rate regulating device (255) include: A direct slider (2553) is connected to the baffle (2521), and two symmetrical side push rods (2554) are rotatably connected to the direct slider (2553); A side push rod (2554), one end of which is rotatably connected to a liftable direct slide block (2553), and the other end of which is rotatably connected to a drainage baffle (2555); A drainage baffle (2555), each partition plate (254) is provided with an opening groove (2541), and a drainage baffle (2555) whose bottom is rotatably connected to the partition plate (254) is provided at the position of the opening groove (2541); When the baffle (2521) rises, the direct slider (2553) is driven to rise, so that the side push rod (2554) drives the drainage baffle (2555) to rotate and open to both sides. Since the height of the baffle (2521) is determined by the number of wires, the air flow speed in the middle flow area can be controlled according to the number of wires.

4. The intelligent primary and secondary fusion ring network box according to claim 3 is characterized in that: The cable dust prevention device (252) is further provided with a cylinder (2526), ​​the cylinder (2526) is fixed on the back wall (25) of the box, the end of the push-pull rod of the cylinder (2526) is connected to the adjustment block (2525), and the flow rate adjustment device (255) also includes a comb-shaped card (2556), the comb-shaped card (2556) is located in the rear ventilation cavity and slides up and down, and a push rod (2557) is provided below the comb-shaped card (2556), which is at the same horizontal position in the three flow areas of a rear ventilation cavity. A comb-shaped card slot (2558) corresponding to the push rod (2557) is provided. When the gas detection device detects that the gas composition in the air is abnormal, the control cylinder (2526) pushes the adjustment block (2525) to move upward, thereby driving the baffle plate (2521) to rise. The rising of the baffle plate (2521) drives the direct slider (2553) to rise. The rising of the direct slider (2553) pushes the push rod (2557) to rise. The comb-shaped card (2556) is lifted into the comb-shaped card slot (2558) to block the three flow areas.

5. The intelligent primary and secondary fusion ring network box according to claim 4 is characterized in that: Side baffles (2511) are slidably connected to both sides of the rear wiring hole (251), and limit blocks (2512) are arranged on the side baffles (2511). Under normal conditions, the limit blocks (2512) are blocked by the side of the baffles (2521) and hidden in the slide seat (2522). When the baffles (2521) rise to a position away from the limit blocks (2512), the side baffles (2511) pop out from both sides under the action of the spring to block the rear wiring hole (2511).

6. The intelligent primary and secondary fusion ring network box according to claim 3 is characterized in that: The direct slider (2553) is connected to the baffle (2521) via a vertical push rod (2552) and an indirect slider (2551); the baffle (2521) is fixedly connected to the back of the baffle (2521); both ends of the vertical push rod (2552) are rotatably connected to the indirect slider (2551) and the direct slider (2553); the indirect slider (2551) and the direct slider (2553) are both located on the inner plate of the box back wall (25) and slide vertically.

7. The intelligent primary and secondary fusion ring network box according to claim 3 is characterized in that: An elastic cushion is arranged at the bottom of the baffle (2521), and the bottom edge of the elastic cushion is wavy.

8. The intelligent primary and secondary fusion ring network box according to claim 3 is characterized in that: A temperature sensor is provided in each inner box (1), and the power of the corresponding exhaust fan (211) is controlled by the temperature sensor.

9. The intelligent primary and secondary fusion ring network box according to claim 3 is characterized in that: The box top cover (21), the front door (22), the box side walls (23), the box bottom tray (24) and the box back wall (25) are all double-layer hollow structures, wherein the inner layer is an insulating plastic plate and the outer layer is a metal plate coated with an insulating layer.

10. The intelligent primary and secondary fusion ring network box according to claim 3 is characterized in that: The gas detection device is at least one of an electrochemical gas sensor, a semiconductor gas sensor, an infrared absorption gas analyzer and a photoionization gas sensor.

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