Temperature monitoring equipment for ring main unit
By using shielding plates and shielding covers in the ring main unit temperature monitoring equipment, the problem of interference from strong electromagnetic fields on the temperature monitoring equipment is solved, ensuring the stability and accuracy of the equipment, reducing the risk of electrical equipment failure and fire, and simplifying the maintenance process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ZHUSHENG ELECTRIC POWER TECH CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-17
AI Technical Summary
Existing ring main unit temperature monitoring systems are susceptible to interference in strong electromagnetic field environments, which can cause temperature monitoring equipment to fail to detect and provide timely data feedback, leading to an increased risk of overheating, malfunction, or fire in electrical equipment.
The design employs shielding plates and shielding covers, utilizing induced current to generate an opposite magnetic field to counteract the influence of external electromagnetic fields, and using a metal shielding layer to isolate strong electromagnetic interference, ensuring the stability of temperature monitoring equipment and signal transmission.
This technology ensures the stability and accuracy of temperature monitoring equipment in strong electromagnetic field environments, prevents electrical equipment from overheating, reduces the risk of failure, improves system safety, and simplifies maintenance procedures.
Smart Images

Figure CN224138588U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ring network box technology, and in particular to a ring network box temperature monitoring device. Background Technology
[0002] A ring main unit is an electrical device consisting of a set of power transmission and distribution equipment housed in a metal or non-metal insulated cabinet or assembled into a modular ring main unit. Its core components include load switches and fuses. It has advantages such as simple structure, small size and low price, and can improve power supply parameters and performance as well as power supply safety. It is widely used in substations and prefabricated substations in load centers such as urban residential areas, high-rise buildings, large public buildings and factories.
[0003] In existing ring main unit temperature monitoring systems, wired signal transmission temperature monitoring equipment is commonly used. This equipment is often susceptible to interference from strong electromagnetic fields inside the unit. This interference prevents the temperature monitoring equipment in some areas from accurately and effectively detecting and promptly feeding back temperature signal data to the controller. Consequently, the controller is unable to issue relevant instructions in a timely manner, leading to overheating of critical components of the electrical equipment inside the ring main unit, which in turn causes equipment failure or damage. Furthermore, it can also cause a decline in the performance of insulation materials, increasing the risk of fire. Therefore, the applicant has developed a beneficial design and found a solution to the above problems. The technical solution described below was developed in this context. Summary of the Invention
[0004] The purpose of this invention is to overcome the shortcomings of the traditional ring main unit design and provide a product that offers comprehensive monitoring, improved security, and reduced maintenance difficulty.
[0005] A ring network box temperature monitoring device includes a box body. The inner wall of the box body is provided with a plurality of recessed grooves arranged in a row. A first wire groove is provided on one side of the recessed grooves. A second wire groove is provided on the inner wall of the box body and communicates with the plurality of first wire grooves on the same horizontal plane. A detachable shielding plate is provided above the first wire grooves and the second wire grooves. A detachable shielding cover is provided on the recessed grooves. An adjustable angle fixed bracket is provided inside the shielding cover. The fixed bracket is fixed with the temperature monitoring device. The shielding cover is provided with a light-transmitting plate and is positioned in front of the temperature monitoring device. The surface of the light-transmitting plate is provided with a conductive coating.
[0006] Preferably, the box body has doors on both sides, and the doors are equipped with temperature controllers.
[0007] Preferably, the temperature monitoring device includes an infrared temperature sensor and a thermal imager, and the temperature controller is electrically connected to the infrared temperature sensor and the thermal imager.
[0008] Preferably, the second groove has several fixing holes on both sides.
[0009] Preferably, the shielding plate is a metal mesh plate, the corners of the shielding plate are provided with tree rivets, the tree rivets are inserted and fixed in the fixing holes, and the sides of the shielding plate are provided with operating handles.
[0010] Preferably, the shielding cover has a connecting part at the entrance and is located in the sink. The outer wall of the connecting part has several inclined blocks that closely abut against the inner wall of the sink, so that the shielding cover is fixed to the inner wall of the box. The connecting part has a notch corresponding to the first groove. The shielding cover has operating parts on both sides.
[0011] Preferably, the inner wall of the shield is provided with a first toothed disc on both sides, the fixed bracket is provided with connecting rods on both sides, the end face of the connecting rod is provided with a second toothed disc and meshes with the first toothed disc, and the first toothed disc and the second toothed disc are evenly distributed with a number of equally spaced oblique teeth around the dot as the axis.
[0012] Preferably, the shielding cover has a through hole for accommodating the light-transmitting plate, a sealing strip is provided between the through hole and the light-transmitting plate, the light-transmitting plate is provided with a baffle, and the baffle is fixed to the shielding cover by adhesive.
[0013] Preferably, the conductive coating is an indium tin oxide coating. Beneficial effects
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] This invention, in a strong electromagnetic field environment, induces currents on the shielding plate. These currents generate opposing magnetic fields, thus counteracting the influence of external electromagnetic fields and significantly reducing the impact on signal transmission in the first and second cable trays. Similarly, the shielding cover forms a metallic shielding layer, effectively isolating the interference of strong external electromagnetic fields on sensitive internal electromagnetic signals, ensuring the stability of the temperature monitoring equipment. This design enables the temperature monitoring equipment to continuously and accurately transmit temperature signal data to the temperature controller, allowing the temperature controller to respond quickly based on real-time temperature information and send relevant instructions to related equipment, preventing critical electrical components in the ring main unit from malfunctioning, being damaged, or experiencing reduced insulation performance due to overheating, thereby reducing the risk of fire. Furthermore, accurate temperature monitoring data improves the accuracy of the maintenance team's assessment of the electrical equipment status, simplifies maintenance procedures, and eliminates potential safety hazards. This design not only achieves comprehensive monitoring and enhances system security but also reduces maintenance complexity and risk, fully demonstrating the product's significant advantages in improving safety performance and reducing maintenance costs. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a ring network box temperature monitoring device according to the present invention;
[0017] Figure 2 This is a side cross-sectional view of a ring network box temperature monitoring device according to the present invention.
[0018] Figure 3 This utility model Figure 2 A partial enlarged view A of a ring network box temperature monitoring device;
[0019] Figure 4 This is a cross-sectional structural diagram of a ring network box temperature monitoring device according to the present invention;
[0020] Figure 5 This utility model Figure 4 A partial enlarged view (B) of a ring network box temperature monitoring device;
[0021] Figure 6 This is a schematic diagram of the enclosure structure of a ring network box temperature monitoring device according to the present invention;
[0022] Figure 7 This utility model Figure 6 A partial enlarged view (C) of a ring network box temperature monitoring device;
[0023] Figure 8 This is a schematic diagram of the shielding plate of a ring network box temperature monitoring device according to the present invention;
[0024] Figure 9 This is a schematic diagram of the structure of the shielding cover for a ring network box temperature monitoring device according to this utility model. Figure 1 ;
[0025] Figure 10 This is a schematic diagram of the structure of the shielding cover for a ring network box temperature monitoring device according to this utility model. Figure 2 ;
[0026] Figure 11 This is a schematic diagram of the structure of a fixed bracket for a ring network box temperature monitoring device according to the present invention;
[0027] The correspondence between the labels and component names in the attached figures is as follows:
[0028] Reference numerals: 1. Enclosure; 2. Shielding plate; 3. Shielding cover; 4. Light-transmitting plate; 5. Fixing bracket; 6. Temperature monitoring equipment; 7. Enclosure door; 8. Temperature controller; 9. Helical tooth section;
[0029] 11. Settling groove; 12. First groove; 13. Second groove; 14. Fixing hole;
[0030] 21. Tree rivet; 22. Operating handle;
[0031] 31. Connecting part; 32. First gear plate; 33. Through hole; 34. Operating part;
[0032] 311. Diagonal block; 312. Notch;
[0033] 41. Sealing strip; 42. Baffle;
[0034] 51. Connecting rod; 52. Second gear;
[0035] 61. Infrared temperature sensor; 62. Thermal imager. Detailed Implementation
[0036] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0038] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.
[0039] Reference example Figures 1 to 11 A ring network box temperature monitoring device includes a box body 1. The inner wall of the box body 1 is provided with a plurality of recessed grooves 11 arranged in a row. A first wire groove 12 is provided on one side of the recessed groove 11. A second wire groove 13 is provided on the inner wall of the box body 1 and is connected to the plurality of first wire grooves 12 on the same horizontal plane. A detachable shielding plate 2 is provided above the first wire grooves 12 and the second wire grooves 13. A detachable shielding cover 3 is provided on the recessed grooves 11. An adjustable angle fixed bracket 5 is provided inside the shielding cover 3. A temperature monitoring device 6 is fixed on the fixed bracket 5. A light-transmitting plate 4 is provided on the shielding cover 3 and is located in front of the temperature monitoring device 6. The surface of the light-transmitting plate 4 is provided with a conductive coating.
[0040] In a strong electromagnetic field environment, induced currents are generated on the shielding plate 2. These currents generate opposing magnetic fields, thereby canceling the influence of external electromagnetic fields and significantly reducing the impact on signal wire transmission in the first cable tray 12 and the second cable tray 13. Similarly, the shielding cover 3 also forms a metal shielding layer, effectively isolating the interference of strong external electromagnetic fields on sensitive internal electromagnetic signals and ensuring the stability of the temperature monitoring device 6. This design enables the temperature monitoring device 6 to continuously and accurately transmit temperature signal data to the temperature controller 8, allowing the temperature controller 8 to respond quickly based on real-time temperature information and send relevant instructions to relevant equipment to prevent critical electrical components in the ring network box from malfunctioning, being damaged, or having reduced insulation performance due to overheating, thereby reducing the risk of fire. In addition, accurate temperature monitoring data improves the accuracy of the maintenance team's judgment of the electrical equipment status, simplifies the maintenance process, and eliminates potential safety hazards. This design not only achieves comprehensive monitoring and enhances system security but also reduces the complexity and risk of maintenance, fully demonstrating the significant advantages of the product in improving safety performance and reducing maintenance costs.
[0041] It is worth mentioning that the two sides of the enclosure 1 are provided with enclosure doors 7, and the enclosure doors 7 are provided with temperature controllers 8. The temperature controllers 8 are used to adjust the upper and lower limits of the measured temperature data of the infrared temperature sensor 61 and the thermal imager 62. When the temperature data detected by the temperature monitoring device 6 exceeds the set threshold of the temperature controller 8, the temperature controller 8 will send an instruction to the cooling fan or other cooling system according to the preset program. Since the above products and reaction processes are existing technologies, they are only briefly described here.
[0042] It is worth mentioning that the temperature monitoring device 6 includes an infrared temperature sensor 61 and a thermal imager 62. The temperature controller 8 is electrically connected to the infrared temperature sensor 61 and the thermal imager 62. The infrared temperature sensor 61 measures the temperature of the object surface in a non-contact manner, and the thermal imager 62 captures a large-scale image of the heat distribution on the object surface for detecting hot spots, insulation defects or mechanical failures.
[0043] It is worth mentioning that several fixing holes 14 are provided on both sides of the second groove 13, and the fixing holes 14 provide a positioning function for the installation of the metal mesh plate;
[0044] It is worth mentioning that the shielding plate 2 is a metal mesh plate. Tree rivets 21 are provided at the corners of the shielding plate 2. The tree rivets 21 are inserted and fixed in the fixing holes 14. Operating handles 22 are provided on both sides of the shielding plate 2. The smaller the mesh size of the metal mesh plate, the better the shielding effect. The tree rivets 21 are connected and fixed to the shielding plate 2 by a hot riveting process. The operating handles 22 make it convenient for staff to disassemble or install the shielding plate 2.
[0045] It is worth mentioning that the entrance of the shielding cover 3 is provided with a connecting part 31 and is set in the sink 11. The outer wall of the connecting part 31 is provided with several inclined blocks 311, which are tightly abutted against the inner wall of the sink 11, so that the shielding cover 3 is fixed to the inner wall of the box 1. The connecting part 31 is provided with a notch 312 corresponding to the first wire groove 12. The shielding cover 3 is provided with an operating part 34 on both sides. The inclined blocks 311 are connected and fixed to the connecting part 31 and the sink 11 by interference fit. The connecting part 31 is inserted into the sink 11 in an embedded manner to form a labyrinth-type sealing structure, which increases the sealing performance between the shielding cover 3 and the sink 11 and reduces the interference of electromagnetic waves generated by strong electromagnetic fields on the temperature monitoring equipment 6. The notch 312 allows the wires and signal lines of the temperature monitoring equipment 6 to enter the first wire groove 12 and the second wire groove 13. The operating part 34 applies an outward pulling force to the shielding cover 3, so that the shielding cover 3 is detached from the connection of the sink 11.
[0046] It is worth mentioning that the inner wall of the shield 3 is provided with a first toothed disc 32 on both sides, the fixed bracket 5 is provided with a connecting rod 51 on both sides, the end face of the connecting rod 51 is provided with a second toothed disc 52, and it meshes with the first toothed disc 32. The first toothed disc 32 and the second toothed disc 52 are evenly distributed with a number of equally spaced helical teeth 9 around the dot as the axis. By rotating the fixed bracket 5, the second toothed disc 52 is rotated around the first toothed disc 32 as the axis. The tilt angle of the helical teeth 9 makes it easy for the helical teeth 9 of the second toothed disc 52 to enter between the helical teeth 9 of the adjacent first toothed disc 32. When no more force is applied to the fixed bracket 5, the second toothed disc 52 is fixed in the position after the rotation, thereby changing the detection angle and area of the temperature monitoring device 6.
[0047] It is worth mentioning that the shielding cover 3 is provided with a through hole 33 to accommodate the light-transmitting plate 4. A sealing strip 41 is provided between the through hole 33 and the light-transmitting plate 4. The light-transmitting plate 4 is provided with a baffle 42. The baffle 42 is fixed to the shielding cover 3 by adhesive. The light-transmitting plate 4 can be glass. The sealing strip 41 reduces the gap between the light-transmitting plate 4 and the through hole 33, improves the sealing performance, and reduces the electromagnetic waves from entering the shielding cover 3 through the gap.
[0048] It is worth mentioning that the conductive coating is set as an indium tin oxide coating. The conductive coating improves the shielding effect of the transparent plate. The indium tin oxide coating has advantages such as excellent transparency, good conductivity, and stable chemical properties.
[0049] The above design scheme enables the product to achieve comprehensive monitoring, improve security, and reduce maintenance difficulty.
[0050] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.
Claims
1. A ring main unit temperature monitoring device comprising a cabinet (1), characterized in that: The inner wall of the box (1) is provided with a plurality of recessed grooves (11) arranged in a row. A first groove (12) is provided on one side of the recessed groove (11). A second groove (13) is provided on the inner wall of the box (1) and is connected to a plurality of first grooves (12) on the same horizontal plane. A detachable shielding plate (2) is provided above the first groove (12) and the second groove (13). A detachable shielding cover (3) is provided in the recessed groove (11). An adjustable angle fixed bracket (5) is provided inside the shielding cover (3). A temperature monitoring device (6) is fixedly installed in the fixed bracket (5). A light-transmitting plate (4) is provided in the shielding cover (3) and is located in front of the temperature monitoring device (6). A conductive coating is provided on the surface of the light-transmitting plate (4).
2. The ring main unit temperature monitoring device according to claim 1, characterized by: The box body (1) is provided with doors (7) on both sides, and the doors (7) are provided with temperature controllers (8).
3. The ring main unit temperature monitoring device according to claim 2, characterized by: The temperature monitoring device (6) includes an infrared temperature sensor (61) and a thermal imager (62), and the temperature controller (8) is electrically connected to the infrared temperature sensor (61) and the thermal imager (62).
4. The ring main unit temperature monitoring device according to claim 1, characterized by: The second groove (13) has several fixing holes (14) on both sides.
5. The ring main unit temperature monitoring device according to claim 4, characterized by: The shielding plate (2) is a metal mesh plate. Tree rivets (21) are provided at the corners of the shielding plate (2). The tree rivets (21) are inserted and fixed in the fixing holes (14). Operating handles (22) are provided on both sides of the shielding plate (2).
6. The ring main unit temperature monitoring device according to claim 1, characterized by: The shield (3) has a connecting part (31) at its entrance and is located in the sink (11). The outer wall of the connecting part (31) has several inclined blocks (311) that closely abut against the inner wall of the sink (11), so that the shield (3) is fixed to the inner wall of the box (1). The connecting part (31) has a notch (312) corresponding to the first wire groove (12). The shield (3) has operating parts (34) on both sides.
7. The ring main unit temperature monitoring device according to claim 1, characterized by: The shield (3) has a first toothed disc (32) on both sides of its inner wall, and the fixed bracket (5) has a connecting rod (51) on both sides. The end face of the connecting rod (51) has a second toothed disc (52) that meshes with the first toothed disc (32). The first toothed disc (32) and the second toothed disc (52) have several equally spaced oblique teeth (9) evenly distributed around the dot as the axis.
8. The ring main unit temperature monitoring device of claim 1, wherein: The shielding cover (3) is provided with a through hole (33) for accommodating the light-transmitting plate (4), and a sealing strip (41) is provided between the through hole (33) and the light-transmitting plate (4). The light-transmitting plate (4) is provided with a baffle (42), and the baffle (42) is fixed to the shielding cover (3) by adhesive.
9. The ring main unit temperature monitoring device of claim 1, wherein: The conductive coating is configured as an indium tin oxide coating.