Underground cable monitoring device with waterproof structure

Abstract

The invention discloses an underground cable monitoring device with a waterproof structure, and relates to the technical field of power monitoring facilities. A supporting plate is mounted in a cabinet body through a supporting beam, a cable monitoring system is mounted on the supporting plate, and a water retaining edge is arranged on the upper surface of the supporting plate; a water retaining mechanism capable of moving up and down is further arranged, and the water retaining mechanism comprises a water retaining cover arranged on the outer side of the water retaining edge in a sleeving mode. According to the invention, the water retaining cover capable of moving up and down is arranged, the water retaining cover is in sealing fit with the water retaining edge on the supporting plate, and static sealing measures such as sealant at the wire pipe are combined, so that preliminary and passive waterproof protection is provided for the cable monitoring system; in a normal state, the gap between the water retaining cover and the supporting plate is beneficial to air circulation and heat dissipation in the cabinet; when water is accumulated in the cabinet, the system can form a closed space step by step along with the rising of the water level, active and dynamic waterproof protection is provided for a cable monitoring system, and equipment is effectively prevented from being damaged due to waterflooding.

Description

Technical Field

[0001] This invention belongs to the technical field of power monitoring facilities, and in particular relates to an underground cable monitoring device with a waterproof structure. Background Technology

[0002] Underground cable monitoring devices are key equipment for ensuring the safe and stable operation of the power grid. They are typically installed in underground environments such as cable wells and cable trenches to monitor parameters such as cable temperature, circulating current, and voltage in real time. However, the underground environment is complex and changeable, especially during the rainy season or when drainage is poor, the cabinet housing the monitoring device is highly susceptible to water accumulation or even flooding.

[0003] Currently, static sealing technology is commonly used for waterproofing underground monitoring cabinets. This involves injecting sealant or using waterproof connectors at cable entry and exit points, and installing sealing strips between the cabinet door and the cabinet body. This approach is effective against minor leaks or moisture. However, when groundwater levels rise sharply due to heavy rain, pipe leaks, or persistent flooding, the limitations of static sealing become apparent: once the external water level exceeds the height of the cabinet's base plate, water will inevitably seep into the cabinet. Since the monitoring electronics are typically mounted directly on a mounting plate inside the cabinet, the floodwater will directly soak these delicate devices, causing short circuits, component damage, permanent failure of monitoring functions, and potentially even more serious power grid failures.

[0004] The electronic equipment inside the monitoring cabinet generates a lot of heat during operation. The traditional heat dissipation solution is to open ventilation holes or install cooling fans on the cabinet. While ventilation holes introduce cool air, they also provide a channel for water vapor and water to enter. If the cabinet is completely sealed for waterproofing, the heat inside the cabinet cannot be dissipated in time. The high temperature environment will accelerate the aging of the equipment and may even trigger the equipment overheat protection or shutdown, which also threatens the reliability of the monitoring system. Summary of the Invention

[0005] The purpose of this invention is to provide an underground cable monitoring device with a waterproof structure. By installing a support plate for the cable monitoring system inside the cabinet, and a water-blocking cover that is fitted on the outside of the water-blocking edge, the water-blocking cover can move up and down, and heat dissipation holes are opened on the side wall of the cabinet, the problem of existing monitoring devices being unable to simultaneously achieve heat dissipation and waterproofing is solved.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention relates to an underground cable monitoring device with a waterproof structure, comprising a cabinet with a hinged door on one side, and ventilation holes on the side wall of the cabinet; a support plate is mounted inside the cabinet via a support beam, and a vertical mounting plate is fixed to the upper surface of the support plate, on which a cable monitoring system is mounted. The cable monitoring system includes a processor, which is connected to a temperature sensor, a circulating current sensor, and a voltage sensor; at least one through hole is opened on the bottom side of the cabinet, and a conduit is inserted through the support plate directly above the through hole; the cable passes through the through hole and enters the conduit; sealant is injected into the area between the cable and the conduit; a water-retaining edge is provided on the upper surface of the support plate; and a water-retaining mechanism that can move up and down is also provided, the water-retaining mechanism including a water-retaining cover fitted outside the water-retaining edge.

[0008] Furthermore, the two outer side walls of the water-blocking cover are respectively provided with protrusions, and a first round rod is provided between the two inner walls of the cabinet located diagonally above the protrusions; the water-blocking cover is located between the two first round rods, and a T-shaped limiting rod is provided at the bottom of the cabinet located directly below the first round rods, through which a first float is movably inserted; at least two first traction ropes are connected to the protrusions, and a first annular groove is opened on the first round rod for the first traction ropes to pass through, and the end of the first traction rope is connected to the first float; in the natural state, the first float is placed at the bottom of the cabinet under the action of gravity, and a gap is formed between the water-blocking cover and the upper surface of the support plate.

[0009] Furthermore, vertical rods are respectively provided at both ends of the upper surface of the boss, and a second round rod is connected between the two vertical rods. A second annular groove is provided on the second round rod. At least two first guide rods are connected to the lower surface of the boss, and the first guide rods pass through the second float. The top of the water-blocking mechanism is also provided with a top cover mechanism that can move up and down. The top cover mechanism includes a top cover that can be sealed and closed on the top of the water-blocking cover. At least two second guide rods that can move through the boss are provided on both sides of the top cover. At least two second traction ropes are connected to both sides of the top cover mechanism. One end of the second traction rope passes through the second annular groove, a through hole opened on the boss, and is connected to the second float in sequence. In the natural state, under the action of gravity, the top cover detaches from the top of the water-blocking cover, and a gap is formed between the top cover and the water-blocking cover.

[0010] Furthermore, a cooling fan is installed on the top of the cabinet, the air outlet of the cooling fan is connected to a distributor, and the air inlet of the cooling fan is connected to an air inlet pipe; multiple exhaust pipe groups are installed through the top cover, and the exhaust pipe groups extend into the interior of the water baffle; the top of the exhaust pipe groups is connected to the distributor through a connecting pipe.

[0011] Furthermore, an opening is made on the top side of the cabinet, and a tubular shell is welded and fixed at the opening. A perforated base plate is welded to the bottom of the shell, and the cooling fan is installed on the perforated base plate. The top of the shell protrudes from the top side of the cabinet, and multiple support columns are fixed on the top side of the cabinet around the shell. A rain cover is installed on the top of the support columns.

[0012] Furthermore, the air inlet of the air inlet pipe extends to a higher position outside the cabinet, and an insect-proof net, a filter net, and a rain cover are provided at the air inlet; a T-shaped limiting rod is provided on the upper surface of the support plate, and a guide block for the T-shaped limiting rod to pass through is provided on the inner wall of the water shield.

[0013] Furthermore, the exhaust pipe assembly includes an inner pipe that penetrates the top cover and is fixed to the top cover, with a connecting pipe connected to the top of the inner pipe; an outer pipe is sleeved on the outside of the inner pipe, with the bottom end of the outer pipe fixed to the upper surface of the support plate; and several exhaust holes are formed on the outer wall of the outer pipe along its length.

[0014] Furthermore, a sealing ring is provided on the inner wall of the top end of the outer tube, and a sealing fin is provided on the inner wall of the sealing ring to seal against the outer wall of the inner tube; a slip ring that slides along the inner wall of the outer tube is connected to the bottom outer wall of the inner tube via a connecting rod.

[0015] Furthermore, it also includes a cubic frame for supporting the cabinet; the cubic frame includes an upper frame and a lower frame connected by connecting columns; the lower frame includes two parallel first profiles, and two second profiles are welded between the two first profiles; the lower frame includes two parallel third profiles, and two fourth profiles are welded between the two third profiles; the cabinet is supported on a support surface formed by the two third profiles and the two fourth profiles; the first profiles and / or the second profiles are provided with mounting holes for connection and fixation with the foundation.

[0016] Furthermore, the first, second, third, and fourth profiles are all square tubes; both ends of the third profile are equipped with L-shaped fixing plates, and one side of the L-shaped fixing plate is provided with a rod inserted into the third profile and a socket; the end side of the third profile is provided with locking bolts for fixing the rod inserted into the third profile, and the outer wall of the cabinet is provided with positioning posts inserted into the socket.

[0017] The present invention has the following beneficial effects:

[0018] 1. This invention provides preliminary, passive waterproof protection for the cable monitoring system by setting up a water-blocking cover that can move up and down. The water-blocking cover and the water-blocking edge on the support plate are sealed together, and static sealing measures such as sealant at the conduit are combined. Under normal conditions, the gap between the water-blocking cover and the support plate helps the air to circulate and dissipate heat inside the cabinet. When water accumulates inside the cabinet, the system can gradually form a sealed space as the water level rises, providing active, dynamic waterproof protection for the cable monitoring system and effectively preventing the equipment from being damaged by flooding.

[0019] 2. This invention cleverly combines the air outlet duct of the cooling fan with the movable exhaust pipe assembly, which can accurately deliver cooling air to the equipment area for efficient heat dissipation under normal conditions; the multi-layer protective structure consisting of a shell, support column and rain cover plate on the outside of the cooling fan can effectively prevent rainwater, dust and foreign objects from directly intruding into the heat dissipation system.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

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

[0022] Figure 1 This is a schematic diagram of the underground cable monitoring device of the present invention;

[0023] Figure 2 for Figure 1 The main view;

[0024] Figure 3 for Figure 2 Sectional view at point DD;

[0025] Figure 4 for Figure 3 Enlarged view of a section at point C;

[0026] Figure 5 for Figure 1 Side view;

[0027] Figure 6 for Figure 5 Sectional view at point BB;

[0028] Figure 7 for Figure 6 Enlarged view of a section at point E in the middle;

[0029] Figure 8 for Figure 1Enlarged view of a portion of point A in the middle;

[0030] Figure 9 This is a schematic diagram of the exhaust pipe assembly structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the cubic frame structure of the present invention;

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1-Cubic frame, 2-Cabinet body, 10-First profile, 11-Second profile, 12-Connecting column, 13-Third profile, 14-Fourth profile, 15-L-shaped fixing plate, 16-Locking bolt, 20-Through hole, 21-Support beam, 22-Water baffle, 23-Support plate, 24-Vertical mounting plate, 25-First round rod, 26-T-shaped limiting rod II, 30-Water baffle cover, 31-Boss, 32-First traction rope, 33-First float, 34-T-shaped limiting rod I, 35-Vertical rod, 36-Second round rod, 37-First guide rod, 38-Guide block, 40-Top cover, 41-Second guide rod, 42-Second traction rope, 43-Second float, 44-Exhaust pipe assembly, 45-Connecting pipe, 50-Shell. 51-Distributor, 52-Support, 53-Rainproof cover, 54-Perforated base plate, 440-Outer tube, 441-Exhaust port, 442-Inner tube, 443-Connecting rod, 444-Slip ring, 445-Sealing ring, 446-Sealing fin. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0036] Please see Figure 1-2 As shown in Figure 5, the present invention is an underground cable monitoring device with a waterproof structure, including a cubic frame 1 welded from multiple square tubes, which provides a stable supporting foundation for the cabinet 2.

[0037] like Figure 10 The cubic frame 1 includes an upper frame and a lower frame connected by connecting columns 12; the lower frame includes two parallel first profiles 10, with two second profiles 11 welded between the two first profiles 10; the lower frame includes two parallel third profiles 13, with two fourth profiles 14 welded between the two third profiles 10; the first profiles 10, second profiles 11, third profiles 13 and fourth profiles 14 are all square tubes; the cabinet 2 is supported on a support surface formed by the two third profiles 13 and the two fourth profiles 14; the first profiles 10 and / or the second profiles 11 are provided with mounting holes for connection and fixation with the foundation, ensuring the stability of the device in complex underground environments.

[0038] To facilitate the support and fixation of the cabinet 2 using the cubic frame 1, L-shaped fixing plates 15 are installed at both ends of the third profile 13. A plug rod is provided on one side of the L-shaped fixing plate 15 to be inserted into the third profile 13. A locking bolt 16 is provided on the end side of the third profile 13 to fix the plug rod inserted into the third profile 13. An insertion hole is also provided on the inner wall of the L-shaped fixing plate 15 with the plug rod, and a positioning post is provided on the outer wall of the cabinet 2 to be inserted into the insertion hole.

[0039] The assembly process of cubic frame 1 and cabinet 2 mainly includes:

[0040] The cubic frame 1 is fixed to the foundation through the mounting holes on its lower frame. Then, the cabinet 2 is hoisted or moved onto the upper frame of the cubic frame, so that it rests on the support surface formed by two third profiles 13 and two fourth profiles 14;

[0041] The operator needs to align the insertion hole on each L-shaped fixing plate 15 with the positioning post on the outer wall of the cabinet and insert the positioning post into the insertion hole. After the positioning post is inserted, use a tool to tighten the locking bolt 16 set on the side of the third profile 13. Through the combined action of the L-shaped fixing plates 15 on both sides, the cabinet 2 is finally stably fixed on the cubic frame 1, which facilitates the installation, disassembly and maintenance of the cabinet 2.

[0042] A door opening is provided on one side of the cabinet 2, and the cabinet door is hinged at the door opening. Ventilation holes are provided on the side wall of the cabinet 2. A support plate 23 is installed inside the cabinet 2 via a support beam 21. A vertical mounting plate 23 is fixed on the upper surface of the support plate 23. A cable monitoring system is installed on the vertical mounting plate 23. The cable monitoring system includes a processor. The processor is connected to a temperature sensor, a circulating current sensor, and a voltage sensor. The ventilation holes are provided to facilitate heat dissipation.

[0043] like Figure 1-3In addition to 5-6, the upper surface edge of the support plate 23 is provided with a raised water-retaining edge 22, and the bottom of the cabinet 2 has a through hole 20 for cable introduction. A conduit 2 is fixed through the support plate 23 directly above it. After the cable passes through the through hole 20 and enters the conduit 24, sealant is injected into the gap between the cable and the conduit 24 to achieve static sealing. The core wire of the cable is connected to the corresponding terminal of the cable monitoring system installed on the vertical mounting plate 24.

[0044] To prevent the water level from rising and the water from entering the cabinet through the heat dissipation holes and submerging the support plate 23, which would affect the processor lights installed on the support plate 23, a water-blocking mechanism 3 that can move up and down is also provided inside the cabinet 1. The water-blocking mechanism 3 includes a water-blocking cover 30 that is fitted on the outside of the water-blocking edge 22. The top of the water-blocking mechanism 3 is also provided with a top cover mechanism 4 that can move up and down. The top cover mechanism 4 includes a top cover 40 that can seal and close to the top of the water-blocking cover 30.

[0045] The two outer side walls of the water shield 30 are provided with protrusions 31. The cabinet 2 located diagonally above the protrusions 31 is provided between the two inner walls. The water shield 30 is located between the two first round rods 20. The bottom of the cabinet 2 located directly below the first round rods 20 is provided with a T-shaped limiting rod 34. The T-shaped limiting rod 34 is movably passed through the first float 33. At least two first traction ropes 32 are connected to the protrusions 31. The first round rod 20 is provided with a first annular groove for the first traction ropes 32 to pass through. The end of the first traction rope 32 is connected to the first float 33. Under normal circumstances, the first float 33 is placed at the bottom of the cabinet due to gravity, and a gap is left between the water shield 30 and the upper surface of the support plate 23.

[0046] like Figure 3-8 Vertical rods 35 are respectively provided at both ends of the upper surface of the boss 31, and a second round rod 36 is connected between the two vertical rods 35. A second annular groove is provided on the second round rod 36. At least two first guide rods 37 are connected to the lower surface of the boss 31, and the first guide rods 37 pass through the second float 43. At least two second guide rods 41 are provided on both sides of the top cover 40, which can move through the boss 31. At least two second traction ropes 35 are connected to both sides of the top cover mechanism 4. One end of the second traction rope 35 passes through the second annular groove, the through hole opened on the boss 31, and is connected to the second float 43. Under normal circumstances, the top cover 40 is separated from the water shield 30 due to gravity. T-shaped limiting rod 26 is provided on the upper surface of the support plate 23, and guide block 38 is provided on the inner wall of the water shield 30 for the T-shaped limiting rod 26 to pass through. The T-shaped limiting rod 26 and the guide block 38 not only play a guiding role, but also control the maximum height of the water shield 30's upward movement.

[0047] The specific working processes of the water-blocking mechanism 3 and the top cover mechanism 4 include:

[0048] When water accumulates at the bottom of the cabinet, the first float 33 floats up under the action of buoyancy. The first traction rope 32 pulls the water baffle 30 downward along the T-shaped limit rod 26 and the guide block 38 until its bottom is tightly attached to the water baffle 22 on the upper surface of the support plate 23, forming the first waterproof seal.

[0049] As the liquid level inside cabinet 2 continues to rise, the second float 43 floats up and pulls the top cover 40 downward along the second guide rod 41 via the second traction rope 42, tightly covering the top of the water shield 30 to form a second waterproof seal.

[0050] In the above, the cable monitoring system is completely protected in a dry space consisting of a water shield and a top cover, effectively preventing the equipment from being submerged in water.

[0051] To facilitate heat dissipation and dissipate the heat generated by the processor and other components, such as Figure 6 An opening is made on the top side of the cabinet 2, and a tubular shell 50 is welded and fixed to the opening. The top of the shell 50 protrudes from the top side of the cabinet 2. Multiple support columns 52 are fixed to the top side of the cabinet 2 around the shell 50, and rain cover plates 53 are installed on the top of the support columns 52. A perforated bottom plate 54 is welded to the bottom of the shell 50, and a cooling fan 5 is installed on the perforated bottom plate 54. The air inlet of the cooling fan 5 is connected to an air inlet pipe, and the air inlet of the air inlet pipe extends to a high position outside the cabinet 2. An insect screen and a filter screen are set at the air inlet. The insect screen and filter screen are set to prevent mosquitoes, fallen leaves, and fluff from entering the interior of the cabinet 2 when the cooling fan 5 is working. The rain cover is set to prevent rainwater from entering the air inlet of the air inlet pipe.

[0052] The cooling fan 5 has a multi-layered protective structure consisting of a housing 50, a support column 52, and a rain cover 53, which can effectively prevent rainwater, dust, and foreign objects from directly intruding into the cooling system.

[0053] The exhaust end of the cooling fan 5 is connected to the distributor 51. Multiple exhaust pipe groups 44 are installed through the top cover 40, and the exhaust pipe groups 44 extend into the interior of the water baffle 30. The top of the exhaust pipe groups 44 is connected to the distributor 51 through the connecting pipe 45.

[0054] The cooling fan 5 at the top of the cabinet is responsible for introducing external cooling air; under normal conditions, the cooling air is directly delivered to the equipment area inside the water baffle 30 through the connecting pipe 45 and the exhaust pipe group 44 for efficient heat dissipation.

[0055] At this time, the original high-temperature air inside the cabinet 1 is discharged from the heat dissipation holes on the side wall of the cabinet 2 and the top shell 50. When the high-temperature gas passes through the shell 50, it completes the heat dissipation of the cooling fan 5.

[0056] like Figure 9The exhaust pipe assembly 44 includes an inner pipe 442 that penetrates the top cover 40 and is fixed to the top cover 40. A connecting pipe 45 is connected to the top of the inner pipe 442. An outer pipe 440 is sleeved on the outside of the inner pipe 442, and the bottom end of the outer pipe 440 is fixed to the upper surface of the support plate 23. Several exhaust holes 441 are formed along the length of the outer wall of the outer pipe 440. A sealing ring 445 is provided on the inner wall of the top end of the outer pipe 440, and sealing fins 446 are provided on the inner wall of the sealing ring 445 to seal against the outer wall of the inner pipe 442. The bottom outer wall is connected to a slip ring 444 that slides along the inner wall of the outer tube 440 via a connecting rod 443; when the top cover floats and descends due to water accumulation, the inner tube 442 slides inside the outer tube 440 accordingly; through the guidance of the slip ring 444 and the cooperation of the top sealing ring 445 and the sealing fins 446, the dynamic sealing of the exhaust pipe assembly within the range of movement of the top cover is ensured, which not only ensures the freedom of movement of the top cover, but also ensures that the gas is transported from the inner tube 442 to the outer tube 440 and discharged through the exhaust hole 441 opened on the outer tube 440.

[0057] The cooling fan 5 starts, drawing in external cooling air through the intake pipe and pumping it into the inner pipe 442 of the exhaust pipe assembly 44 via the distributor 51 and connecting pipe 45. After flowing out from the bottom of the inner pipe 442, the cooling air enters the outer pipe 440, which is fitted around it. The cooling air is evenly sprayed through these exhaust holes 441 into the protective space formed by the water baffle 30 and the top cover 40, directly providing forced air cooling to the cable monitoring system. Since the inner pipe 442 is fixed to the top cover 40, and the outer pipe 440 is fixed to the support plate 23, when the top cover 40 descends, the inner pipe 442 slides downwards inside the outer pipe 440. During this sliding process, the connecting rod 443 secures the inner pipe 442. The fixed slip ring 444 slides along the inner wall of the outer tube 440, playing a guiding and stabilizing role; at the same time, the sealing ring 445 and the sealing fins 446 on the inner wall of the top of the outer tube 440 will fit tightly with the outer wall of the inner tube 442, forming a reliable dynamic sealing interface, preventing the gas discharged from the bottom of the inner tube 442 from directly overflowing outward from the gap formed between the inner tube 442 and the outer tube 440 when the bottom of the inner tube 442 moves to the top position of the outer tube 440; at the same time, the gap between the inner tube 442 and the outer tube 440 ensures that the gas can be discharged from all the exhaust holes 441 on the outer tube 440 to complete heat dissipation throughout the entire process of the inner tube 442 moving along the length of the outer tube 440.

[0058] Under clear weather conditions, the cable well is dry. At this time, the first float 33 and the second float 43 are placed at the bottom of the cabinet 2 due to their own weight; the bottom of the water baffle 30 maintains a certain gap with the upper surface of the support plate 23 under the action of gravity; the top cover 40 also detaches from the top of the water baffle 30 due to gravity; the cooling fan 5 continues to work, drawing in the relatively dry and cool air in the upper part of the cable well through the air inlet pipe, and pumping it into each exhaust pipe group 44 through the distributor 51 and the connecting pipe 45; the cooling air flows out from the bottom of the inner pipe 442, enters the outer pipe 440, and is evenly blown towards the cable monitoring system protected by the water baffle 30 through the numerous exhaust holes 441 on the wall of the outer pipe 440, forcing it to be cooled by air; some gas escapes from the gap between the water baffle mechanism 3 and the support plate 23 and is discharged through the heat dissipation holes; another part of the gas moves upward from the top of the water baffle 30 and is discharged through the shell 50;

[0059] When the water baffle mechanism 3 falls down and the top cover mechanism 4 does not fall down, the cooling air is delivered to the equipment area inside the water baffle 30. All the gas moves upward from the top of the water baffle 30 and is discharged through the housing 50. The top cover 40 is still in the open state to facilitate heat dissipation.

[0060] When both the water-blocking mechanism 3 and the top cover mechanism 4 have fallen, the liquid level sensor installed inside the cabinet 2 detects the liquid level information and controls the cooling fan 5 to stop running. At this time, the water-blocking cover 30 and the top cover 40 form a completely sealed dry space, thoroughly protecting the cable monitoring system.

[0061] As the water level inside cabinet 2 gradually decreases, the second float 43 and the first float 33 lose buoyancy and fall back under the influence of gravity. At this time, the top cover 40 and the water baffle 30 also reset in sequence, reopening the heat dissipation channel; the device resumes normal monitoring and heat dissipation.

[0062] In summary, the present invention, through the combination of the water-blocking mechanism 3, the top cover mechanism 4, and the heat dissipation fan 5, solves the contradiction between the easy water ingress of traditional heat dissipation holes and the poor heat dissipation of sealed cabinets, and takes into account both the heat dissipation efficiency under normal conditions and the waterproof heat dissipation requirements under severe weather conditions.

[0063] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A waterproof underground cable monitoring device, characterized in that: The cabinet (2) includes a hinged door on one side, and the side wall of the cabinet (2) has ventilation holes. Inside the cabinet (2), a support plate (23) is installed via a support beam (21). A vertical mounting plate (23) is fixed on the upper surface of the support plate (23). A cable monitoring system is installed on the vertical mounting plate (23). The cable monitoring system includes a processor, and the processor is connected to a temperature sensor, a circulating current sensor, and a voltage sensor. At least one through hole (20) is opened on the bottom side of the cabinet (2), and a conduit (2) is installed through the support plate (23) located directly above the through hole (20). The cable passes through the through hole (20) and enters the conduit (2); sealant is injected into the area between the cable and the conduit (2); A water-blocking edge (22) is provided on the upper surface of the support plate (23); A water-blocking mechanism (3) that can move up and down is also provided. The water-blocking mechanism (3) includes a water-blocking cover (30) that is sleeved on the outside of the water-blocking edge (22).

2. The underground cable monitoring device with a waterproof structure according to claim 1, characterized in that, The two outer walls of the water shield (30) are respectively provided with protrusions (31), and the cabinet (2) located diagonally above the protrusions (31) is provided with a first round rod (20) between the two inner walls. The water shield (30) is located between two first round rods (20). A T-shaped limiting rod (34) is provided at the bottom of the cabinet (2) directly below the first round rod (20). The first float (33) is movably passed through the T-shaped limiting rod (34). At least two first traction ropes (32) are connected to the boss (31), and a first annular groove is provided on the first round rod (20) for the first traction rope (32) to pass through. The end of the first traction rope (32) is connected to the first float (33). In its natural state, the first float (33) is placed at the bottom of the cabinet (2) under the action of gravity, and a gap is formed between the water shield (30) and the upper surface of the support plate (23).

3. The underground cable monitoring device with a waterproof structure according to claim 2, characterized in that, Vertical rods (35) are respectively provided at both ends of the upper surface of the boss (31), and a second round rod (36) is connected between the two vertical rods (35). A second annular groove is provided on the second round rod (36). At least two first guide rods (37) are connected to the lower surface of the boss (31), and the first guide rods (37) pass through the second float (43). The top of the water-blocking mechanism (3) is also provided with a top cover mechanism (4) that can move up and down. The top cover mechanism (4) includes a top cover (40) that can be sealed and closed on the top of the water-blocking cover (30). At least two second guide rods (41) that can move through the boss (31) are provided on both sides of the top cover (40). At least two second traction ropes (42) are connected to both sides of the top cover mechanism (4). One end of the second traction rope (42) passes through the second annular groove, the through hole opened on the boss (31), and is connected to the second float (43) in sequence. In its natural state, under the action of gravity, the top cover (40) detaches from the top of the water shield (30), and a gap is formed between the top cover (40) and the water shield (30).

4. A waterproof underground cable monitoring device according to claim 3, characterized in that, A cooling fan (5) is installed on the top of the cabinet (2). The air outlet of the cooling fan (5) is connected to the distributor (51), and the air inlet of the cooling fan (5) is connected to the air inlet pipe. Multiple exhaust pipe groups (44) are provided through the top cover (40), and the exhaust pipe groups (44) extend into the interior of the water baffle (30); The top of the exhaust pipe assembly (44) is connected to the distributor (51) via a connecting pipe (45).

5. The underground cable monitoring device with a waterproof structure according to claim 4, characterized in that, An opening is made on the top side of the cabinet (2), and a tubular shell (50) is welded and fixed at the opening. A perforated base plate (54) is welded to the bottom of the shell (50), and the heat dissipation fan (5) is installed on the perforated base plate (54). The top of the housing (50) protrudes from the top side of the cabinet (2), and multiple support columns (52) are fixed on the top side of the cabinet (2) around the housing (50). A rain cover (53) is installed on the top of the support column (52).

6. The underground cable monitoring device with a waterproof structure according to claim 4, characterized in that, The air inlet of the air inlet pipe extends to a higher position outside the cabinet (2), and an insect-proof net, a filter net and a rain cover are provided at the air inlet. The upper surface of the support plate (23) is provided with a T-shaped limiting rod (26), and the inner wall of the water shield (30) is provided with a guide block (38) for the T-shaped limiting rod (26) to pass through.

7. The underground cable monitoring device with a waterproof structure according to claim 4, characterized in that, The exhaust pipe assembly (44) includes an inner pipe (442) that passes through the top cover (40), the inner pipe (442) being fixed to the top cover (40), and the top of the inner pipe (442) being connected to a connecting pipe (45). An outer tube (440) is sleeved on the outside of the inner tube (442), and the bottom end of the outer tube (440) is fixed to the upper surface of the support plate (23); The outer wall of the outer tube (440) has several vent holes (441) along its length.

8. The underground cable monitoring device with a waterproof structure according to claim 7, characterized in that, The inner wall of the top end of the outer tube (440) is provided with a sealing ring (445), and the inner wall of the sealing ring (445) is provided with sealing fins (446) that are sealed to the outer wall of the inner tube (442). The bottom outer wall of the inner tube (442) is connected by a connecting rod (443) to a slip ring (444) that slides along the inner wall surface of the outer tube (440).

9. A waterproof underground cable monitoring device according to any one of claims 1-8, characterized in that, It also includes a cubic frame (1) for supporting the cabinet (2); The cubic frame (1) includes an upper frame and a lower frame connected by connecting columns (12); The lower frame includes two parallel first profiles (10), and two second profiles (11) are welded between the two first profiles (10). The lower frame includes two parallel third profiles (13), and two fourth profiles (14) are welded between the two third profiles (10). The cabinet (2) is supported on a support surface formed by two third profiles (13) and two fourth profiles (14); the first profile (10) and / or the second profile (11) are provided with mounting holes for connecting and fixing with the foundation.

10. The underground cable monitoring device with a waterproof structure according to claim 9, characterized in that, The first profile (10), the second profile (11), the third profile (13) and the fourth profile (14) are all square tubes; Both ends of the third profile (13) are equipped with L-shaped fixing plates (15). One side of the L-shaped fixing plate (15) is provided with a rod inserted into the third profile (13) and a socket. The end side of the third profile (13) is provided with locking bolts (16) for fixing the rod inserted into the third profile (13). The outer wall of the cabinet (2) is provided with positioning posts inserted into the socket.

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