Outdoor adjustable ring main unit

Abstract

The invention relates to the technical field of power equipment, in particular to an outdoor adjustable ring main unit, which comprises a box body, a storage device, an opening and closing device, a connecting mechanism, a cleaning assembly, an anti-theft assembly and a sensor, and is characterized in that the box body is arranged on a concrete base; the storage device is installed in the box body in a sliding mode, and the storage device is used for storing electrical elements and is automatically closed in severe weather. The opening and closing device is rotationally mounted on the box body; one end of the connecting mechanism is installed on the opening and closing device in a sliding mode, and the other end of the connecting mechanism is fixedly installed on the storage device. The cleaning assembly is fixedly mounted on the storage device; the anti-theft assembly is fixedly installed in the box body. By adopting the design, the working environment of the electrical element can be automatically closed according to the humidity change in the air, and the negative influence of the external environment on the electrical element can be isolated in severe weather conditions.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, specifically to an outdoor adjustable ring main unit. Background Technology

[0002] An outdoor ring main unit is a device used in power distribution systems. It is usually installed in power distribution rooms, substations, and other places in urban or industrial areas. It is a medium-voltage power device that can control and distribute high-voltage electrical energy and convert it into low-voltage electrical energy to meet various power needs. In residential areas, outdoor ring main units are important equipment to ensure the normal operation of electrical equipment in residential areas, and the stability and reliability of their power systems must be ensured.

[0003] However, in order to provide heat dissipation channels for electrical components, existing outdoor ring main units generally have multiple ventilation openings. Therefore, in severe weather conditions, such as heavy rain, existing outdoor ring main units cannot actively seal their internal structure, allowing rainwater to enter the cabinet through the ventilation openings, causing water seepage problems. This negatively impacts the normal operation of electrical components and may even lead to electrical fires and other safety hazards, causing inconvenience to residents in residential areas and even threatening their lives and property. To address this issue, Shenzhen Weisman Power Equipment Co., Ltd. invented an outdoor-installed ring main unit that is resistant to top-mounted water seepage and corrosion (application number: CN202123228040.6, announcement date: 2022-05-10). This invention includes: an outdoor box; a door connected to one side of the outdoor box; a through groove inside the ring main unit body; a lead screw threaded into the vertical plate; a bearing seat connected to one end of the lead screw; a servo motor fixedly connected below the second bevel gear; and the servo motor fixedly connected to one side of the outdoor box. This outdoor-installed ring main unit designed to prevent top-level water seepage and corrosion uses a rotating screw to move the upright plate, pushing out rainwater accumulated at the bottom and thus preventing top-level water seepage and corrosion. An internal threaded cylinder moves an adjusting plate downwards along a guide rail, causing two sets of clamping plates to fit against the sides of the ring main unit, preventing lateral swaying. Second bearings and a rotating shaft on both sides allow the frame to be rotated outwards, opening the through-slot and exposing the internal filter plates for easy inspection of internal components. However, this invention only clears rainwater accumulated at the bottom and prevents top-level water seepage and corrosion; it does not adequately address the problem of the internal electrical components being affected by the external environment under harsh conditions, and therefore cannot achieve automatic sealing of the internal environment of the ring main unit.

[0004] Therefore, the present invention provides an outdoor adjustable ring main unit, which can improve the above-mentioned problems. Summary of the Invention

[0005] The technical problem to be solved by this invention is that existing outdoor ring main units cannot isolate and close off the influence of the external environment on their internal electrical components under severe weather conditions, thereby causing unexpected situations such as power outages and power trips in residential areas.

[0006] Therefore, in order to solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] This invention provides an outdoor adjustable ring main unit, including a housing, a storage device, an opening and closing device, a connecting mechanism, a cleaning component, an anti-theft component, and sensors. The housing is mounted on a concrete base at a certain distance from the ground and has multiple ventilation openings. The storage device is slidably installed inside the housing and is used to store electrical components. It automatically closes in inclement weather to protect the electrical components inside. The opening and closing device is rotatably mounted on the housing and is used to prevent the housing from being opened by non-technical personnel and to facilitate maintenance of the electrical components inside the storage device by technical personnel. One end of the connecting mechanism is slidably installed on the opening and closing device, and the other end is fixedly installed on the storage device. The connecting mechanism is used to drive the opening and closing device when it moves. The storage device and the cleaning component move together, facilitating technicians to clean the dust adsorbed inside the cabinet while performing maintenance. The cleaning component is fixedly installed on the storage device and is used to clean the dust adsorbed inside the cabinet by electro-ion attraction. The anti-theft component is fixedly installed inside the cabinet. The sensor is fixedly installed inside the storage device. The sensor can be an SHT20 digital humidity sensor, which uses a thermistor humidity sensor, has high accuracy, fast response speed, and advantages such as low voltage operation and low power consumption design. The sensor has a measurement range of 0-100%RH and a measurement accuracy of ±3%RH, which can meet the ring main unit's accurate humidity detection requirements. The sensor is used to measure air humidity and transmit a closure signal to the storage device when the measured value exceeds the standard value.

[0008] Preferably, the storage device includes an electrical control cabinet, sliding components, fixing elements, and lighting elements. The electrical control cabinet has two small sliders (40×50×20 mm) at its bottom, which are slidably installed inside the cabinet. Two sliding components are symmetrically fixedly installed vertically inside the electrical control cabinet. The fixing elements are slidably installed inside the electrical control cabinet, with several vertically arranged arrays of fixing elements within the cabinet. The lighting elements are slidably installed on the top of the electrical control cabinet. The lighting elements can be 12V LED storage lights, connected to the power supply line inside the ring main unit via a plug, and support manual switch control. Because the lighting elements use LED light sources, they have low power consumption and long lifespan, making them suitable for outdoor ring main units in residential areas that require long-term use.

[0009] Preferably, the electrical control cabinet has a double-layer structure, comprising an electrical control board and a cabinet body. The cabinet body is slidably installed inside the enclosure. The cabinet body can be made of an aluminum substrate, which has good heat dissipation performance. The electrical equipment in the ring main unit has strict requirements for ambient temperature; the internal temperature cannot exceed the allowable temperature range of the equipment. Therefore, using an aluminum substrate for the cabinet body can better dissipate heat from the internal electrical components, ensuring the normal operation of the ring main unit. The electrical control board is slidably installed inside the cabinet body, and multiple partitions are arrayed on the electrical control board. The electrical control board can be made of 5 mm thick FR-4 fiberglass board, which has excellent insulation performance, mechanical strength, and heat resistance. It is one of the most commonly used electrical control board materials and can be used stably in outdoor ring main units. Both the electrical control board and the cabinet body are semi-cylindrical structures, and the outer diameter of the electrical control board is equal to the inner diameter of the cabinet body. The electrical control board and the cabinet body are coaxially fitted.

[0010] Preferably, the sliding assembly includes a slide rail and a slider. Two slide rails are symmetrically fixedly installed inside the electrical control cabinet. The slide rails are fixedly connected to the cabinet body. The slide rails can be aluminum alloy semi-circular arc-shaped slide rails. The width and height of the slide rails are both 10 mm. One end of each slide rail is provided with a limiting frame that restricts the sliding of the slider. The limiting frame has a cross-sectional area of ​​12 × 10 mm. The sliders are slidably installed on the two slide rails respectively. The sliders are fixedly connected to the electrical control board. The sliders are arc-shaped and have arc-shaped grooves on them that allow them to slide on the slide rails. The sliders can carry the electrical control board and slide inside the electrical control cabinet.

[0011] Preferably, the fixing element includes a fixing frame and a pulley. The fixing frame has two symmetrical arc-shaped openings at its left and right ends to accommodate the rotation of the pulley. The pulley is rotatably mounted on the fixing frame. The pulley has a diameter of 50 mm and a thickness of 8 mm. The pulley can be made of nylon. Compared with metal materials, nylon is very light, which can reduce the weight of the machine and equipment and lower the installation cost. Nylon pulleys also have good wear resistance, can withstand frequent use and high friction, and have a longer service life. Nylon pulleys are also cheaper and have lower production costs. Based on these advantages, nylon pulleys can be used. The pulley is slidably mounted on the partition frame of the electrical control board inside the electrical control cabinet. The arc of the fixing frame is 150°.

[0012] Preferably, the opening and closing device includes a door panel, a support element, a baffle, and a tool storage element. The door panel is hinged and rotatably mounted on the front of the housing. The door panel measures 1700 × 1190 mm and has a thickness of 20 mm. The door panel can be made of high-strength aluminum alloy, and its surface is treated with electrostatic spraying to enhance surface hardness and corrosion resistance. The back of the door panel has a sliding groove to accommodate the sliding of the connecting mechanism and the support element. The support element can be made of lightweight, high-strength, and corrosion-resistant aluminum alloy. The support element has dimensions of 1000×30 mm and a thickness of 5 mm. One end of the support element is slidably mounted on the door panel, and the other end of the support element is rotatably mounted on the baffle. The baffle is made of aluminum plate with dimensions of 1200×1190 mm, which has good corrosion resistance and weather resistance. The baffle needs to provide rain protection for maintenance personnel in harsh weather conditions. Therefore, aluminum plate with good corrosion resistance and lightweight is suitable for use in outdoor ring main units. The tool storage element is fixedly installed on the back of the door panel.

[0013] Preferably, the connecting mechanism includes a dragging element, a transmission element, and a guide element. The dragging element is fixedly installed on the bottom surface of the storage device. The dragging element is 230 mm long. One end of the transmission element is hinged to the dragging element. The transmission element can be a lightweight aluminum alloy rod with a size of 50 × 800 mm. The other end of the transmission element is rotatably mounted with the guide element. The guide element can be a slider with a size of 50 × 100 mm. The guide element is slidably installed in a groove opened on the opening and closing device.

[0014] Preferably, the cleaning component includes a power supply element, an electrode element, a dust collection element, and a control element. The power supply element is fixedly installed on the storage device. The power supply element can use a 24V DC power supply to generate an electrostatic field inside the cleaning component, causing the surface of the cleaning component to carry an electrostatic charge, thereby achieving an adsorption effect. One end of the power supply element is connected to the control element. The control element is an electrostatic controller used to control the output voltage, current, and frequency of the power supply element. The control element also has a switching function. The control element will only turn on the power supply element when the storage device moves. The other end of the power supply element is connected to the electrode element. The electrode element can be two aluminum metal plate electrodes, so that the dust carries charged particles. The dust collection element is fixedly installed on the electrode element. The dust collection element can be a copper electronic dust collection plate, which adsorbs the charged dust on the surface of the dust collection plate and can be cleaned periodically.

[0015] Preferably, the anti-theft component includes a self-locking element, an anti-cutting element, an anti-prying element, and an alarm element. The self-locking element is fixedly installed inside the enclosure and can be made of 304 stainless steel, which has high strength and corrosion resistance. The anti-cutting element is fixedly installed inside the enclosure and can be made of two 42CrMo high-strength alloy steels with dimensions of 30×60×1580 mm, which have high hardness and toughness and are not easily cut or damaged. The anti-prying element is fixedly installed on the opening and closing device and can be made of anti-pry beams made of 20CrMoTi steel, which have high strength and high toughness to prevent the enclosure from being pried open. The alarm element is fixedly installed on the self-locking element and can be a vibration switch, which is compact, easy to install, and has the advantages of high sensitivity and high reliability.

[0016] Preferably, the lower inner surface of the enclosure is provided with a slide rail that slides to accommodate the storage device. A 600×20 mm steel slide rail can be used. The enclosure is made of hot-dip galvanized steel sheet, which has advantages such as corrosion resistance, weather resistance, and high strength, meeting the corrosion resistance and shock resistance requirements of outdoor ring main units. The outer surface of the enclosure adopts a corrugated structure, effectively increasing the rigidity and stability of the enclosure. Simultaneously, the wavy, uneven surface of the corrugated structure increases the contact area between the enclosure and the outside environment, improving ventilation, facilitating heat dissipation, and extending the service life of internal electrical components.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. An outdoor adjustable ring main unit of the present invention, by designing the storage device, can automatically seal the working environment of electrical components according to the changes in humidity in the air. In the event of severe weather conditions, it can isolate the negative impact of the external environment on the electrical components. After the rain stops, it can automatically release the sealing state without affecting the heat dissipation of the electrical components working inside.

[0019] 2. An outdoor adjustable ring main unit of the present invention, through the design of the opening and closing device, allows the baffle to reduce the impact of rain or sunlight on the line of sight when technicians are performing maintenance work on the ring main unit. The tool storage element allows technicians to conveniently place maintenance tools, improving maintenance efficiency. Furthermore, through the connecting mechanism, the storage device can be sent out while the opening and closing device is opened, facilitating maintenance by technicians. In addition, the fixing element in the storage device also reduces the difficulty of maintaining the outdoor ring main unit. Therefore, when the outdoor ring main unit malfunctions unexpectedly, it can be quickly repaired, reducing the negative impact on daily life in residential areas.

[0020] 3. An outdoor adjustable ring main unit of the present invention, by designing the anti-theft components, can effectively reduce the theft rate of electrical components inside the ring main unit. The anti-cutting component and the anti-pry component can prevent criminals from using tools to open the ring main unit. The alarm component can send a signal in time when the ring main unit is damaged, so as to avoid more losses. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is an overall schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the storage device of the present invention;

[0024] Figure 3 This is a schematic diagram of the electrical control cabinet of the present invention;

[0025] Figure 4 This is an enlarged schematic diagram of the sliding component of the present invention;

[0026] Figure 5 This is a schematic diagram of the fixing element of the present invention;

[0027] Figure 6 This is a schematic diagram of the opening and closing device of the present invention;

[0028] Figure 7 This is a schematic diagram of the connection mechanism of the present invention;

[0029] Figure 8 This is a schematic diagram of the cleaning component of the present invention;

[0030] Figure 9 This is a schematic diagram of the anti-theft component of the present invention.

[0031] Figure 10 This is a partial enlarged view B of the anti-theft component of the present invention;

[0032] Figure 11 This is a schematic diagram of the housing of the present invention.

[0033] In the diagram: 1. Cabinet; 2. Storage device; 21. Electrical control cabinet; 211. Electrical control board; 212. Cabinet; 22. Sliding assembly; 221. Slide rail; 222. Slider; 23. Fixing element; 231. Fixing frame; 232. Pulley; 24. Lighting element; 3. Opening and closing device; 31. Door panel; 32. Supporting element; 33. Baffle; 34. Tool storage element; 4. Connecting mechanism; 41. Dragging element; 42. Transmission element; 43. Guide element; 5. Cleaning assembly; 51. Power supply element; 52. Electrode element; 53. Dust collection element; 54. Control element; 6. Anti-theft assembly; 61. Self-locking element; 62. Cut-resistant element; 63. Pry-resistant element; 64. Alarm element; 7. Sensor. Detailed Implementation

[0034] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0035] Example 1: As Figure 1 As shown, an outdoor adjustable ring network cabinet includes a cabinet 1, a storage device 2, an opening and closing device 3, a connecting mechanism 4, a cleaning component 5, an anti-theft component 6, and a sensor 7. The cabinet 1 is set on a concrete base and is a certain distance from the ground. The storage device 2 is slidably installed inside the cabinet 1. The opening and closing device 3 is rotatably installed on the cabinet 1. One end of the connecting mechanism 4 is slidably installed on the opening and closing device 3, and the other end of the connecting mechanism 4 is fixedly installed on the storage device 2. The cleaning component 5 is fixedly installed on the storage device 2. The anti-theft component 6 is fixedly installed inside the cabinet 1, and the sensor 7 is fixedly installed inside the storage device 2.

[0036] The enclosure 1 is used to resist external impacts and protect the internal structure. The enclosure 1 is provided with multiple ventilation holes to help dissipate heat from the internal electrical components. The storage device 2 is used to store electrical components and automatically closes in case of severe weather to protect the electrical components installed inside. The opening and closing device 3 is used to prevent the enclosure 1 from being opened by non-technical personnel and to facilitate technicians to inspect and repair the electrical components inside the storage device 2. The connecting mechanism 4 is used to move the storage device 2 and the cleaning component 5 together when the opening and closing device 3 moves, so that technicians can clean the dust adsorbed inside the enclosure 1 while performing inspections. The cleaning component 5 is used to clean the dust adsorbed inside the enclosure 1 by electro-ion attraction. The anti-theft device is used to protect the enclosure 1 and the internal components. The sensor 7 is used to measure the air humidity and transmit a closing signal to the storage device 2 when the measured value exceeds the standard value.

[0037] Most existing outdoor ring main units have simple structures and limited functions. Dehumidification and rain protection mainly rely on a large amount of desiccant placed inside. Furthermore, because the ring main unit generates a large number of ions during operation, dust in the air is attracted to the inside of the unit, requiring regular manual cleaning. Moreover, existing outdoor ring main units have poor security, making them vulnerable to theft by criminals who can steal internal electrical components, resulting in unnecessary property losses for local governments. Therefore, the outdoor adjustable ring main unit designed in this invention possesses excellent impact resistance and anti-theft performance, protecting the property security of local governments and achieving enclosed protection for its internal electrical components, effectively reducing the occurrence of unexpected events such as power outages in residential areas.

[0038] like Figure 2 As shown, the storage device 2 includes an electrical control cabinet 21, sliding components 22, fixing elements 23, and lighting elements 24. The electrical control cabinet 21 has two small sliders (40×50×20 mm) at its bottom, each slider having a groove (20×50 mm in size and 10 mm in depth). The bottom of the electrical control cabinet 21 is slidably installed inside the housing 1, with a maximum sliding distance of 600 mm. Two sliding components 22 are symmetrically fixedly installed vertically inside the electrical control cabinet 21. The fixing elements 23 are slidably installed inside the electrical control cabinet 21, and several fixing elements 23 are arranged in a vertical array within the electrical control cabinet 21. The lighting elements 24 are slidably installed on the top of the electrical control cabinet 21, and the lighting elements 24 can be 12V LED storage lights.

[0039] When encountering severe weather, the electrical control cabinet 21 can provide closed protection for electrical components through the cooperation of the sliding component 22. When technicians are inspecting, they can open the electrical control cabinet 21 by moving the sliding component 22. In poor lighting conditions, technicians can pull out and turn on the lighting element 24, making the inspection work more convenient and accurate. When electrical components have problems and it is inconvenient to repair them on the spot, technicians can pull out the fixing element 23 and remove the electrical components to return them to the factory for repair, effectively reducing the difficulty of inspection under severe weather conditions.

[0040] In existing outdoor ring main units, electrical components are all mounted on a fixed plate, and there is no lighting inside the ring main unit. This makes maintenance difficult at night or in bad weather conditions, and the electrical components are not protected. When there is heavy rainfall, the electrical components are prone to moisture and failure, affecting the power supply in the residential area. Therefore, the storage device 2 designed in this invention provides good protection for the internal electrical components and also facilitates the maintenance work of technicians.

[0041] like Figure 3As shown, the electrical control cabinet 21 has a double-layer structure, comprising an electrical control board 211 and a cabinet body 212. The cabinet body 212 is slidably installed inside the enclosure 1. Two handrails are symmetrically arranged on the left and right sides of the cabinet body 212. The cabinet body 212 can be made of an aluminum substrate, which has good heat dissipation performance. The electrical equipment in the ring main unit has strict requirements for ambient temperature; the internal temperature cannot exceed the allowable temperature range of the equipment. Therefore, using an aluminum substrate for the cabinet body 212 can better dissipate heat from the internal electrical components, ensuring the normal operation of the ring main unit. The electrical control board 211 is slidably installed inside the enclosure 1. Inside the cabinet 212, multiple partitions are arrayed on the electrical control board 211. The cross-sectional dimensions of the partitions are 10×10 mm. The electrical control board 211 can be made of 5 mm thick FR-4 fiberglass board. Both the electrical control board 211 and the cabinet 212 are semi-cylindrical structures, and the outer diameter of the electrical control board 211 is equal to the inner diameter of the cabinet 212. The height of the electrical control board 211 is 1480 mm, and the height of the cabinet 212 is 1640 mm. The electrical control board 211 and the cabinet 212 are coaxially aligned, and the electrical control board 211 can rotate freely around the axis of the cabinet 212.

[0042] When the sensor 7 detects that the air humidity is greater than 70%, the electronic control board 211 will rotate 180° around the axis of the cabinet 212 under the drive of the sliding component 22, forming a completely closed hollow cylindrical structure with the cabinet 212 to prevent rainwater from seeping into and contacting the internal electrical components. When the sensor 7 reading returns to the normal value, the electronic control board 211 returns to the initial position, thereby providing better heat dissipation for the electrical components.

[0043] Existing outdoor ring main units only protect electrical components through the outer enclosure. When rainfall is heavy, rainwater can seep into the enclosure through ventilation openings on the surface, damaging the electrical components. Therefore, the electrical control cabinet 21 designed in this invention can actively seal off the working environment of electrical components when weather conditions change, preventing the components from being affected by rainfall and causing power outages in residential areas. Furthermore, the seal is released after the rainfall stops, ensuring that the heat dissipation of the electrical components is not affected.

[0044] like Figure 4As shown, the sliding assembly 22 includes a slide rail 221 and a slider 222. The two slide rails 221 are symmetrically fixedly installed inside the electrical control cabinet 21. The slide rails 221 are fixedly connected to the cabinet body 212. The slide rails 221 can be made of aluminum alloy semi-circular arc-shaped slide rails. The width of the slide rail 221 is 10 mm and the height of the slide rail 221 is also 10 mm. One end of the slide rail 221 is provided with a limiting frame that limits the sliding of the slider 222. The limiting frame has a cross-sectional area of ​​12 × 10 mm. The slider 222 is slidably installed on the two slide rails 221 respectively. The slider 222 is fixedly connected to the electrical control board 211. The slider 222 is arc-shaped and has an arc-shaped groove on the slide rail 221 for sliding. The groove depth is 5 mm. The slider 222 can slide with the electrical control board 211 inside the electrical control cabinet 21.

[0045] like Figure 5 As shown, the fixing element 23 includes a fixing frame 231 and a pulley 232. The fixing frame 231 has two symmetrical arc-shaped openings at its left and right ends to accommodate the rotation of the pulley 232. The length of the opening is 70 mm. The pulley 232 is rotatably installed in the openings on the fixing frame 231. The pulley 232 has a diameter of 50 mm and a thickness of 8 mm. The pulley 232 can be made of nylon. Compared with metal materials, nylon is very light, which can reduce the weight of the machine and equipment and reduce the installation cost. Moreover, nylon pulleys have good wear resistance and can withstand frequent use and high friction, resulting in a longer service life. In addition, nylon pulleys are cheaper and have lower production costs. Based on these advantages, the pulley 232 can be made of nylon. The pulley 232 is slidably installed on the partition of the electrical control board 211 inside the electrical control cabinet 21. The arc of the fixing frame 231 is 150°.

[0046] When technicians are performing maintenance work, if they encounter electrical components that cannot be repaired on the spot, they can use the pulley 232 to pull the fixing element 23 out of the control board 211, remove the electrical components on the fixing element 23, replace them with functional electrical components, and then insert the fixing element 23 back into its original position. The replaced electrical components can be returned to the factory for repair.

[0047] In existing outdoor ring main units, electrical components are fixedly mounted on the control board, which in turn is fixedly mounted inside the enclosure. When an electrical component malfunctions, technicians must manually disassemble the control board, resulting in low maintenance efficiency. In case of emergencies such as power outages or trips, repairs take a long time. However, the fixed component 23 designed in this invention, through its modular design, reduces the complexity of maintenance operations and the time required for maintenance. In case of unexpected situations, power supply can be restored promptly, reducing the negative impact on daily life in residential areas.

[0048] like Figure 6 As shown, the opening and closing device 3 includes a door panel 31, a support element 32, a baffle 33, and a tool storage element 34. The door panel 31 is hinged and rotatably mounted on the front of the housing 1. The door panel 31 measures 1700×1190 mm and has a thickness of 20 mm. The door panel 31 can be made of high-strength aluminum alloy. The surface treatment of the door panel 31 is electrostatic spraying to enhance surface hardness and corrosion resistance. The back of the door panel 31 has a sliding groove for accommodating the sliding of the connecting mechanism 4 and the support element 32. The sliding groove for accommodating the sliding of the connecting mechanism 4 measures 1120×50 mm, and the sliding groove for accommodating the sliding of the support element 32 measures 1200×50 mm. Both grooves are 10 mm deep. The support element 32 can be made of high-strength aluminum alloy. The support element 32 is made of lightweight, high-strength, and corrosion-resistant aluminum alloy. The support element 32 has dimensions of 1000×30 mm and a thickness of 5 mm. A slider with dimensions of 50×100 mm is rotatably mounted on one end of the support element 32. The slider is slidably mounted in a groove on the door panel 31. A baffle 33 is rotatably mounted on the other end of the support element 32. A handrail is provided at the lower end of the baffle 33. The baffle 33 is made of aluminum plate with dimensions of 1200×1190 mm. The tool storage element 34 is fixedly mounted on the back of the door panel 31. The tool storage element 34 can be made of aluminum alloy rectangular box with dimensions of 880×100×150 mm. The tool storage element 34 is welded and fixed directly above the groove that accommodates the sliding of the connecting mechanism 4.

[0049] When technicians are inspecting electrical components inside the ring main unit in adverse weather conditions, the baffle 33 can be raised with the cooperation of the support element 32 to shield the view from rain or sunlight. Technicians can also place their maintenance tools in the tool storage element 34 for easy access.

[0050] The existing outdoor ring main unit has a relatively simple cabinet door, which cannot provide convenience for technicians during maintenance. In case of severe weather, it is difficult for technicians to maintain the ring main unit. During long maintenance operations, severe weather can cause unnecessary harm to the technicians' health. Therefore, the opening and closing device 3 designed in this invention provides a certain degree of protection for technicians performing maintenance operations and can block rain or sunlight from obstructing their vision, thereby improving the maintenance speed and reducing the maintenance time. In addition, the design of the tool storage element 34 also provides convenience for technicians to perform maintenance work.

[0051] like Figure 7 As shown, the connecting mechanism 4 includes a dragging element 41, a transmission element 42, and a guide element 43. The dragging element 41 is fixedly installed on the bottom surface of the storage device 2. The dragging element 41 is 230 mm long. The distance between the fixed position of the dragging element 41 and the storage device 2 and the axis of the storage device 2 is 350 mm. One end of the transmission element 42 is hinged to the dragging element 41. The transmission element 42 can be a lightweight aluminum alloy rod with a size of 50×800 mm. The other end of the transmission element 42 is rotatably mounted with the guide element 43. The guide element 43 can be a slider with a size of 50×100 mm. The guide element 43 is slidably installed in the groove opened on the opening and closing device 3.

[0052] When technicians need to perform maintenance work inside the ring main unit, the opening and closing device 3 is opened, and the guide element 43 slides in the groove of the opening and closing device 3. When the guide element 43 moves to the limit position, the transmission element 42 will drive the dragging element 41 to bring out the storage device 2, so that technicians can easily inspect the electrical components inside.

[0053] In existing outdoor ring main units, electrical components are fixed inside the ring main unit and cannot be moved. When technicians need to repair the electrical components inside, they need to put their bodies into the ring main unit, which affects the repair efficiency. Therefore, the connection mechanism 4 designed in this invention can realize the simultaneous pulling out of the storage device 2 when the opening and closing device 3 is opened, making it convenient for technicians to repair the electrical components.

[0054] like Figure 8As shown, the cleaning component 5 includes a power supply element 51, an electrode element 52, a dust collection element 53, and a control element 54. The power supply element 51 is fixedly mounted on the storage device 2. The power supply element 51 can use a 24V DC power supply to generate an electrostatic field inside the cleaning component 5, causing the surface of the cleaning component 5 to carry an electrostatic charge, thereby achieving an adsorption effect. One end of the power supply element 51 is connected to the control element 54. The control element 54 can be an electrostatic controller used to control the output voltage, current, and frequency of the power supply element 51. The control element 54 also has a switching function. The control element 54 will turn on the power supply element 51 only when the storage device 2 moves, thereby reducing the power consumption of the cleaning component 5. The other end of the power supply element 51 is connected to the electrode element 52. The electrode element 52 can be two aluminum metal plate electrodes, so that the dust carries charged particles. The dust collection element 53 is fixedly installed on the electrode element 52. The dust collection element 53 can be a copper electronic dust collection plate. When charged dust or pollutants pass through the dust collection plate, they will be attracted to the surface of the dust collection plate by electrostatic force.

[0055] When the opening and closing device 3 is opened, the storage device 2 is driven to move through the cooperation of the connecting mechanism 4. The control element 54 turns on the power supply element 51, and the electrode element 52 starts to discharge, so that the dust adsorbed inside the box 1 carries charged particles. When the charged tiny dust particles pass through the dust collection element 53, they are attracted to the dust collection element 53 by electrostatic force. Technicians only need to clean the dust collection element 53 in time during maintenance.

[0056] Existing outdoor ring main units inevitably generate charged particles that escape into the surrounding air when their internal electrical components are in operation. As a result, some fine dust will be adsorbed into the ring main unit. When too much dust accumulates, it will have a certain negative impact on the normal operation of the electrical components. Therefore, the cleaning mechanism designed in this invention can simultaneously adsorb and clean the dust inside the housing 1 when the opening and closing device 3 is opened, ensuring a dust-free working environment for the electrical components.

[0057] like Figure 9 and Figure 10As shown, the anti-theft component 6 includes a self-locking element 61, an anti-cutting element 62, an anti-prying element 63, and an alarm element 64. The self-locking element 61 is fixedly installed inside the housing 1. The self-locking element 61 can be made of 304 stainless steel, which has high strength and corrosion resistance. The anti-cutting element 62 is fixedly installed inside the housing 1. The anti-cutting element 62 can be made of two 42CrMo high-strength alloy steels with dimensions of 30×60×1580 mm, which have high hardness and toughness and are not easily cut or damaged. The anti-prying element 63 is fixedly installed on the opening and closing device 3. 63 can be made of 20CrMoTi steel to prevent the enclosure 1 from being pried open. The alarm element 64 is fixedly installed on the self-locking element 61. The alarm element 64 can be a vibration switch. When someone attempts to pry open the door or uses force to damage the self-locking element 61, the contact surface between the self-locking element 61 and the enclosure 1 will vibrate, triggering the vibration switch and thus emitting an alarm signal. The vibration switch is small in size, easy to install, and has the advantages of high sensitivity and high reliability. Therefore, the ring main unit door lock can use a vibration switch as the alarm element 64.

[0058] When technicians perform maintenance on the outdoor ring main unit, they can first use the matching key to open the self-locking element 61, and then perform normal maintenance on the internal electrical components, which is convenient and quick.

[0059] Existing outdoor ring main units often lack anti-theft devices, which not only makes it easy for electrical components to be lost and electricity to be stolen, but may even cause accidental injury to residents in residential areas. Therefore, the anti-theft component 6 designed in this invention prevents criminals from stealing outdoor ring main units and indirectly protects the personal safety of residents in residential areas.

[0060] like Figure 11 As shown, the lower surface of the inner side of the enclosure 1 is provided with a slide rail that slides with the storage device 2. The slide rail can be made of steel with a size of 600×20 mm. The enclosure 1 is made of hot-dip galvanized steel plate, which has the advantages of corrosion resistance, good weather resistance and high strength, and meets the requirements of corrosion resistance and shock resistance of outdoor ring main units. The outer surface of the enclosure 1 adopts a corrugated structure, which effectively increases the rigidity and stability of the enclosure 1. At the same time, the corrugated structure is conducive to heat dissipation and extends the service life of internal electrical components.

[0061] The corrugated structure has better bending strength in both the transverse and longitudinal directions, so it can withstand greater external forces and vibrations. The corrugated structure can also effectively absorb and disperse the impact force generated by earthquakes, thus it has better seismic resistance. In addition, the wave-shaped unevenness of the corrugated structure surface can increase the contact area between the box 1 and the outside world, improve the ventilation effect, and thus be more conducive to heat dissipation.

[0062] Example 2: Due to the different usage environments of outdoor ring main units, for general residential areas, the humidity sensor in Example 1 can be used to seal the working environment of internal electrical components during rainfall. However, for inland areas with low annual rainfall and high wind and sand, the sensor 7 can be a wind sensor. When the wind speed reaches 8 m / s, it transmits a sealing signal to the storage device 2 to block the negative impact of wind and sand on the internal electrical components. The cleaning component 5 is replaced with a vibration element and a brush, which removes the wind and sand through vibration and brushing.

[0063] Example 3: For ring main units in fire-prone areas, the sensor 7 can be a temperature sensor. The surfaces of the cabinet 212 and the electrical control board 211 are coated with silicone fire-retardant paint. When the sensor 7 reading reaches 70 degrees Celsius, the sensor 7 transmits a sealing signal to the storage device 2. The fire-retardant paint isolates the internal equipment from the effects of high temperature.

[0064] Normally, when the value of sensor 7 inside the housing 1 reaches 70% or higher, sensor 7 transmits a closing signal to sliding assembly 22, and the electrical control board 211 rotates 180° around the axis of cabinet 212. At this time, the electrical control cabinet 21 is in a closed state. When the value of sensor 7 drops below 70%, sliding assembly 22 releases the closed state of electrical control cabinet 21. When technicians inspect the internal electrical components, they can open the self-locking element 61 with the matching key, open the opening and closing device 3, and with the cooperation of the connecting mechanism 4, pull the storage device 2 out of the housing 1. At the same time, the cleaning component 5 cleans the inside of the housing 1. The staff can lift the baffle 33, place the inspection tools in the tool storage element 34, turn on the lighting element 24 to perform normal inspection of the internal electrical components, and clean the dust on the dust collection element 53 after the inspection is completed.

[0065] 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 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. An outdoor adjustable ring main unit, characterized in that: The system includes a housing (1), a storage device (2), an opening and closing device (3), a connecting mechanism (4), a cleaning component (5), an anti-theft component (6), and a sensor (7). The housing (1) is set on a concrete base and is a certain distance from the ground. The housing (1) has multiple ventilation openings. The storage device (2) is slidably installed inside the housing (1). The storage device (2) is used to store electrical components and automatically closes in case of severe weather to protect the electrical components installed inside. The opening and closing device (3) is rotatably installed on the housing (1). The opening and closing device (3) is used to prevent the housing (1) from being opened by non-technical personnel and to facilitate the maintenance of electrical components inside the storage device (2) by technical personnel. One end of the connecting mechanism (4) is slidably installed on the opening and closing device. The other end of the connecting mechanism (4) is fixedly installed on the storage device (2) on the opening and closing device (3). The connecting mechanism (4) is used to drive the storage device (2) and the cleaning component (5) to move together when the opening and closing device (3) moves, so as to facilitate technicians to clean the dust adsorbed in the box (1) while performing maintenance. The cleaning component (5) is fixedly installed on the storage device (2). The cleaning component (5) is used to clean the dust adsorbed in the box (1) by electro-ion attraction. The anti-theft component (6) is fixedly installed in the box (1). The sensor (7) is fixedly installed in the storage device (2). The sensor (7) is used to measure the air humidity and transmit a closing signal to the storage device (2) when the measured value exceeds the standard value.

2. The outdoor adjustable ring main unit according to claim 1, characterized in that: The storage device (2) includes an electrical control cabinet (21), a sliding assembly (22), a fixing element (23), and a lighting element (24). The bottom of the electrical control cabinet (21) is slidably installed inside the housing (1). Two sliding assemblies (22) are symmetrically fixedly installed inside the electrical control cabinet (21). The fixing element (23) is slidably installed inside the electrical control cabinet (21). The lighting element (24) is slidably installed on the top of the electrical control cabinet (21).

3. An outdoor adjustable ring main unit according to claim 2, characterized in that: The electrical control cabinet (21) has a double-layer structure. The electrical control cabinet (21) includes an electrical control board (211) and a cabinet (212). The electrical control board (211) is slidably installed inside the cabinet (212). Both the electrical control board (211) and the cabinet (212) are semi-cylindrical structures. The outer diameter of the electrical control board (211) is equal to the inner diameter of the cabinet (212). The electrical control board (211) and the cabinet (212) are coaxially fitted.

4. An outdoor adjustable ring main unit according to claim 2, characterized in that: The sliding assembly (22) includes a slide rail (221) and a slider (222). The two slide rails (221) are symmetrically fixedly installed in the electrical control cabinet (21). The sliders (222) are slidably installed on the two slide rails (221). The slide rail (221) is semi-circular. One end of the slide rail (221) is provided with a limiting bracket to restrict the sliding of the slider (222). The slider (222) is arc-shaped. The slider (222) is provided with an arc-shaped groove for sliding on the slide rail (221).

5. An outdoor adjustable ring main unit according to claim 2, characterized in that: The fixing element (23) includes a fixing frame (231) and a pulley (232). The pulley (232) is rotatably mounted on the fixing frame (231) and the pulley (232) is slidably mounted inside the electrical control cabinet (21). The arc of the fixing frame (231) is 150°.

6. An outdoor adjustable ring main unit according to claim 1, characterized in that, The opening and closing device (3) includes a door panel (31), a support element (32), a baffle (33), and a tool storage element (34). The door panel (31) is rotatably mounted on the front of the housing (1). A sliding groove is provided on the back of the door panel (31) to accommodate the sliding of the connecting mechanism (4) and the support element (32). One end of the support element (32) is slidably mounted on the door panel (31), and the other end of the support element (32) is rotatably mounted on the baffle (33). The tool storage element (34) is fixedly mounted on the back of the door panel (31).

7. An outdoor adjustable ring main unit according to claim 1, characterized in that, The connecting mechanism (4) includes a dragging element (41), a transmission element (42), and a guide element (43). The dragging element (41) is fixedly installed on the bottom surface of the storage device (2). One end of the transmission element (42) is hinged to the dragging element (41), and the other end of the transmission element (42) is rotatably mounted with the guide element (43). The guide element (43) is slidably installed on the opening and closing device (3).

8. An outdoor adjustable ring main unit according to claim 1, characterized in that, The cleaning component (5) includes a power supply element (51), an electrode element (52), a dust collection element (53), and a control element (54). The power supply element (51) is fixedly installed on the storage device (2). One end of the power supply element (51) is connected to the control element (54), and the other end of the power supply element (51) is connected to the electrode element (52). The dust collection element (53) is fixedly installed on the electrode element (52).

9. An outdoor adjustable ring main unit according to claim 1, characterized in that, The anti-theft component (6) includes a self-locking element (61), an anti-cutting element (62), an anti-prying element (63), and an alarm element (64). The self-locking element (61) is fixedly installed inside the housing (1), the anti-cutting element (62) is fixedly installed inside the housing (1), the anti-prying element (63) is fixedly installed on the opening and closing device (3), and the alarm element (64) is fixedly installed on the self-locking element (61).

10. An outdoor adjustable ring main unit according to claim 1, characterized in that, The lower inner surface of the box (1) is provided with a slide rail that slides in conjunction with the storage device (2), and the outer surface of the box (1) adopts a corrugated structure.

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