Outdoor weatherproof sealed cable branch box

Abstract

The application relates to an outdoor anti-aging sealed cable branch box. The branch box comprises a box body, a base fixedly arranged at the bottom of the box body, a first telescopic piece arranged on the base, a driving end of the first telescopic piece being connected with the box body and used for driving the box body to move in the vertical direction, a gas storage piece arranged on the box body, the gas storage piece being used for storing compressed gas, the gas storage piece being connected with the first telescopic piece through a gas path pipeline, and a triggering mechanism. The gas storage piece, the triggering mechanism and the first telescopic piece are arranged, the box body is automatically triggered and lifted off the ground as a whole when water accumulation occurs, the bottom of the box body is higher than the water level of the water accumulation, the risk that water accumulation seeps into the inside of the box body through the box door gap and the cable inlet and outlet port is avoided from the source, and the limitation that only static sealing is passively prevented in the prior art is overcome.

Description

Technical Field

[0001] This invention belongs to the field of power distribution equipment technology, specifically relating to an outdoor anti-aging sealed cable branch box. Background Technology

[0002] Cable distribution boxes are important equipment in power distribution networks, widely used for power distribution and switching at voltage levels of 10kV and below. In outdoor environments, cable distribution boxes are exposed to harsh natural conditions such as sunlight, rain, and alternating high and low temperatures for extended periods. Therefore, they are typically required to have anti-aging properties and a certain level of sealing and protection capabilities.

[0003] In existing technologies, outdoor cable distribution boxes generally use SMC or stainless steel as the outer shell, with sealing strips to achieve IP54 to IP67 protection levels. A concrete foundation is typically installed at the bottom of the box to elevate it and isolate it from ground water. Some high-end products also incorporate multiple sealing structures at the door seams or install dehumidification devices inside the box to prevent condensation.

[0004] The existing waterproof designs of cable distribution boxes are all based on a static defense concept, relying on the box's own sealing structure and foundation height to resist external moisture intrusion. The problem with this design is that: First, when the depth of water on the road exceeds the height of the foundation base, the water will seep into the box through weak points such as gaps in the box door and cable inlets and outlets, causing the internal electrical equipment to become damp, the insulation performance to deteriorate, and even causing short circuit trips or equipment burnout accidents.

[0005] Second, the existing branch box has a rigid fixed connection between the box body and the base, and the height of the box body cannot be adjusted according to changes in water level, so it does not have the function of actively dealing with water accumulation. Once the water depth exceeds the design value, the equipment loses its protective capability. Summary of the Invention

[0006] The purpose of this invention is to provide an outdoor anti-aging sealed cable branch box in order to solve the problems mentioned in the background art.

[0007] The present invention achieves the above objectives through the following technical solutions: An outdoor anti-aging sealed cable branch box includes: Box; The base is fixedly installed at the bottom of the box body; The first telescopic component is disposed on the base, and the driving end of the first telescopic component is connected to the box body to drive the box body to move in the vertical direction. An air storage device is installed on the housing. The air storage device is used to store compressed gas and is connected to the first telescopic component through an air pipeline. And a triggering mechanism connected to the gas storage unit, the triggering mechanism being used to open the gas storage unit in response to an increase in the external water level; When the triggering mechanism opens the gas storage component, the compressed gas in the gas storage component enters the first telescopic component through the gas pipeline, driving the drive end of the first telescopic component to extend and push the box body upward.

[0008] Preferably, the first telescopic component is a cylinder, the cylinder body of which is fixedly installed on the base, the piston rod of which serves as the driving end, and the piston rod extends vertically upward and is fixedly connected to the side wall of the housing. The cylinder is equipped with a pawl locking mechanism. After the piston rod extends and pushes the housing upward, the pawl locking mechanism is used to lock the piston rod to maintain the lifting height of the housing.

[0009] Preferably, the triggering mechanism includes a valve and a float. The valve includes a valve body, a valve core, and a handle for controlling the opening and closing of the valve core. The float is fixedly connected to the handle. The float is used to move upward under the action of buoyancy after being submerged in water and drive the handle to rotate, so as to open the valve.

[0010] Preferably, the floating component has a hollow structure, and the material of the floating component is plastic or foam with a density less than that of water; The base is also equipped with a protective cover, and the triggering mechanism is located inside the protective cover. The protective cover has a through hole for external water to enter.

[0011] Preferably, two guide rods are fixedly provided on the base, and two limiting blocks are fixedly provided on the side wall of the box. The two limiting blocks are respectively movably sleeved on the corresponding guide rods, and the limiting blocks slide along the guide rods when the box moves upward.

[0012] Preferably, the enclosure includes a front panel, a rear panel, a left panel, and a right panel, and a door is installed on the front panel; Rotating plates are rotatably mounted on the left and right panels at positions corresponding to the four corners of the box door, and support plates are fixedly mounted on the rotating plates. The branch box also includes four second telescopic components disposed on the left panel and the right panel. The second telescopic components are connected to the gas storage component through the gas pipeline. The driving end of the second telescopic component is used to extend under the drive of compressed gas and push the rotating plate to rotate, so as to drive the support plate to rotate to the inside of the box door and abut against and support the box door.

[0013] Preferably, a magnetic component is also fixedly installed on the support plate, and the box door is an iron box door. When the support plate rotates to the inside of the box door, the magnetic component is used to magnetically attract the box door.

[0014] Preferably, a multi-section telescopic rod is fixedly provided at both ends of the support plate, and an expansion member is fixedly provided between the free ends of the two multi-section telescopic rods. The multi-section telescopic rod and the expansion member are both connected to the gas storage device through the gas pipeline. When compressed gas enters the multi-section telescopic rod and the expansion member, the multi-section telescopic rod extends and abuts against the multi-section telescopic rod on the adjacent support plate to unfold the expansion member and position it directly against the gap between the box door and the box body. The expansion member expands to fill the gap.

[0015] Preferably, the inflator is an airbag.

[0016] Preferably, the expansion member is filled with magnetic powder. When the expansion member expands and faces the gap, the magnetic powder is used to adhere to the door so that the expansion member is tightly attached to the door.

[0017] The beneficial effects of this invention are as follows: 1. This invention, by setting up an air storage component, a triggering mechanism, and a No. 1 telescopic component, automatically triggers and lifts the entire box off the ground when water accumulates, so that the bottom of the box is higher than the water level. This avoids the risk of water seeping into the box through gaps in the box door and cable inlets and outlets from the source, and overcomes the limitations of passive defense based solely on static sealing in the prior art.

[0018] 2. The triggering mechanism of the present invention adopts a purely mechanical structure that links the floating part with the valve handle. It can be automatically triggered without the need for power supply and can still operate reliably in extreme conditions such as power grid outages caused by water accumulation, which significantly improves the equipment's survivability in extreme weather conditions.

[0019] 3. By setting up a rotating plate and a support plate, the present invention provides internal support for the door while the box is being raised, effectively resisting the pressure of external water on the door and avoiding the problem of sealing failure caused by door deformation under pressure.

[0020] 4. The present invention provides a magnetic component on the support plate. When the external water pressure on the box door increases, the magnetic attraction of the magnetic component to the iron box door makes the box door and the box body fit more tightly, thus achieving a self-reinforcing sealing effect that the greater the water pressure, the tighter the seal.

[0021] 5. This invention, through the cooperation of multi-section telescopic rods and expansion components, actively fills and seals the gap between the box door and the box body, forming a multi-layered three-dimensional protection system of lifting and risk avoidance, internal support, magnetic clamping, and gap sealing, effectively ensuring the safe and reliable operation of the cable branch box under flood conditions. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the positional relationship between the gas storage component and the No. 1 telescopic component in this invention; Figure 3 This is a schematic diagram showing the positional relationship between the support plate and the box door in this invention; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 yes Figure 3 Enlarged diagram of point B in the middle.

[0023] In the diagram: 1. Box body; 2. Base; 3. Telescopic component No. 1; 4. Air storage component; 5. Floating component; 6. Handle; 7. Protective cover; 8. Through hole; 9. Guide rod; 10. Limiting block; 11. Front panel; 12. Box door; 13. Rotating plate; 14. Support plate; 15. Telescopic component No. 2; 16. Magnetic component; 17. Multi-section telescopic rod; 18. Expansion component. Detailed Implementation

[0024] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Example 1 like Figure 1-5 As shown, an outdoor anti-aging sealed cable branch box includes a box body 1, a base 2 fixedly installed at the bottom of the box body 1, a first telescopic member 3 installed on the base 2, an air storage member 4 installed on the box body 1, and a triggering mechanism connected to the air storage member 4. The triggering mechanism is used to open the air storage member 4, so that the compressed gas in the air storage member 4 enters the first telescopic member 3, thereby causing the piston rod of the first telescopic member 3 to extend and push the box body 1 upward to drive the box body 1 to move upward.

[0026] It should be noted that the first telescopic component 3 is fixedly installed on the base 2, and the telescopic direction of the first telescopic component 3 is vertically upward. The telescopic end of the first telescopic component 3 (the telescopic component uses a cylinder, and the length can change after gas enters, the same below) is fixedly installed on the side wall of the box body 1. The installation of the branch box is completed by fixing the base 2 to the ground or the mounting platform.

[0027] In this embodiment, at the cable inlet / outlet at the bottom of the housing 1, the cable has a sufficient length allowance outside the housing 1, which is greater than the maximum lifting stroke of the first telescopic component 3. When the housing 1 is lifted, the reserved cable length allowance extends outside the housing 1, and the connection between the cable and the terminal block does not bear tensile force.

[0028] When flooding occurs and the road surface cannot drain the water sufficiently, the water depth exceeds the triggering mechanism. The triggering mechanism automatically activates, opening the pipe between the gas storage unit 4 and the first telescopic component 3. The high-pressure gas stored in the gas storage unit 4 enters the first telescopic component 3, causing its telescopic end to extend. The telescopic end of the first telescopic component 3 lifts the housing 1 off the ground, thus preventing it from being submerged by floodwater.

[0029] Preferably, the triggering mechanism includes a valve and a float 5. The valve includes a valve body, a valve core, and a handle 6. The float 5 is fixedly connected to the handle 6. After the float 5 is submerged in water, it moves upward and drives the handle 6 to rotate to open the valve.

[0030] It should be noted that as the water level rises, it gradually submerges the float 5. The float 5 has a hollow structure and is made of low-density plastic or foam material, giving it significant buoyancy in the water. The upward buoyancy of the float 5 causes the handle 6 to rotate, thereby opening the valve and allowing the gas in the gas storage unit 4 to smoothly enter the first telescopic component 3 through the pipeline.

[0031] The float 5 will not rotate the handle 6 during normal rain, preventing accidental triggering. To further prevent accidental triggering, a protective cover 7 is installed on the base 2 to cover the triggering mechanism. The protective cover 7 has a through hole 8 for water to enter. It should be noted that the initial installation height of the float 5 is set to 50-100mm. When the water depth reaches this set value, the float 5 begins to rise and open the valve. This set value is much lower than the threshold height at the bottom of the box door 12 and also much lower than the lowest position of the cable inlet. Therefore, before the water reaches the box door gap and cable inlet, the triggering mechanism has already activated and begun to lift the box 1, allowing sufficient time for the lifting action of the box 1.

[0032] Furthermore, two guide rods 9 are fixedly installed on the base 2, and two limiting blocks 10 are fixedly installed on the side wall of the box body 1, which are movably sleeved on the guide rods 9. When the box body 1 moves upward, it causes the limiting blocks 10 to slide relative to the guide rods 9. The limiting effect of the guide rods 9 can ensure the stability of the box body 1 and reduce the risk of the box body 1 tipping over.

[0033] Furthermore, two guide rods 9 are symmetrically arranged on the left and right sides of the housing 1, and the total length of the guide rods 9 is not less than 1.2 times the maximum lifting height of the first telescopic component 3. When the housing 1 is raised to its highest position, the limiting block 10 is still fitted inside the upper end of the guide rod 9, and the fit clearance between the guide rod 9 and the limiting block 10 is 0.5-2mm. This clearance limits the horizontal displacement of the housing 1. When the housing 1 is subjected to horizontal wind load, the horizontal force is transmitted to the guide rod 9 through the limiting block 10, and then to the base 2 and the ground foundation. The first telescopic component 3 does not bear horizontal shear force.

[0034] Preferably, a transverse connecting beam is provided between the upper ends of the two guide rods 9, which is fixedly connected to the two guide rods 9, further enhancing the bending stiffness of the guide rods 9 under wind load.

[0035] Furthermore, cables are installed on the side wall of container 1 to protect it and ensure its stability in windy conditions. The cables are only tightened after container 1 is raised.

[0036] In this embodiment, the first telescopic component 3 is equipped with a pawl locking mechanism. After the gas lifts the box 1, the pawl immediately locks the piston rod to maintain the height, without the need to continuously use gas to maintain the height. At this time, the gas storage component 4 only needs to provide the burst force for the moment of lifting.

[0037] Example 2 Based on Embodiment 1, the box 1 in this embodiment includes a front panel 11 with a box door 12, a rear panel, a left panel, and a right panel. Rotating plates 13 are rotatably installed on the left panel and the right panel at the four corners of the box door 12, and support plates 14 are fixedly provided on the rotating plates 13.

[0038] Two telescopic components 15 are fixedly installed on the left and right panels respectively. The telescopic components 15 are connected to the gas storage component 4 through pipes and are used to drive the support plate 14 to rotate.

[0039] In this embodiment, a sequence valve is installed on the gas pipeline to control the flow sequence of compressed gas. When the valve is opened, the compressed gas preferentially enters the first telescopic member 3. After the piston rod of the first telescopic member 3 is fully extended and the pawl locking mechanism is locked in place, the pressure in the gas pipeline rises to the set pressure of the sequence valve, the sequence valve switches, and the compressed gas then enters the second telescopic member 15. After the lifting action of the first telescopic member 3 is completed, the compressed gas in the gas storage unit 4 still has enough gas to sequentially supply the second telescopic member 15.

[0040] It should be noted that when the valve is opened, the high-pressure gas in the gas storage unit 4 enters the second telescopic component 15 through the pipeline, causing the second telescopic component 15 to extend. After the telescopic end of the second telescopic component 15 contacts the rotating plate 13, it drives the rotating plate 13 to rotate relative to the left or right panel, thereby causing the support plate 14 to rotate. After the second telescopic component 15 drives the rotating plate 13 to rotate to its maximum angle, the support plate 14 rotates to the door 12 and contacts the inside of the door 12, providing support for the door 12. This allows the accumulated water to support and protect the door 12, preventing the accumulated water from squeezing and deforming the door 12, and further improving the sealing performance of the branch box.

[0041] Preferably, in this embodiment, the support plate 14 is L-shaped. The support plate 14 can provide good support for the box door 12, and the support plate 14 will not cause collisions with the internal components of the box 1 during rotation.

[0042] Furthermore, the support plate 14 is provided with a third section extending to the middle of the door 12, which can protect the entire door 12.

[0043] Example 3 Based on Embodiment 2, in this embodiment, a magnetic element 16 is fixedly disposed on the support plate 14 for attracting the box door 12. Preferably, the magnetic element 16 is a permanent magnet, and the box door 12 is made of iron.

[0044] It should be noted that by providing the magnetic component 16, when the support plate 14 approaches the box door 12, the magnetic component 16 generates a magnetic attraction force on the box door 12, which can attract the box door 12, making the box door 12 adhere more tightly to the box body 1, further improving the sealing performance of the branch box, thereby reducing the chance of water entering.

[0045] Example 4 Based on Embodiment 3, in this embodiment, both ends of the support plate 14 are fixedly provided with multi-section telescopic rods 17, and an expansion member 18 is fixedly provided between the free ends of the two multi-section telescopic rods 17 to seal the gap between the door 12 and the box body 1. Preferably, the expansion member 18 is an airbag, which is folded when not inflated.

[0046] It should be noted that the multi-section telescopic rod 17 and the expansion member 18 are both connected to the gas storage member 4 through pipes. When the gas in the gas storage member 4 enters the multi-section telescopic rod 17 and the expansion member 18, the multi-section telescopic rod 17 extends and the expansion member 18 inflates.

[0047] After the multi-section telescopic rod 17 extends, it abuts against the multi-section telescopic rod 17 on the adjacent support plate 14. The eight multi-section telescopic rods 17 on the four support plates 14 are combined to form a complete rectangle. After the multi-section telescopic rod 17 extends, the expansion member 18 unfolds. The expansion member 18 is located between the multi-section telescopic rod 17, the support plate 14, and the door 12, and the expansion member 18 is directly opposite the gap between the door 12 and the box body 1. After the expansion member 18 expands, it can fill the gap and further protect against water accumulation.

[0048] Furthermore, the expansion member 18 is filled with magnetic powder, which adheres to the door 12, increasing the contact strength between the expansion member 18 and the door 12, allowing the expansion member 18 and the door 12 to adhere tightly together, making it difficult for water to enter the box 1.

[0049] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An outdoor anti-aging sealed cable branch box, characterized in that, include: Box (1); The base (2) is fixedly installed at the bottom of the box (1); The first telescopic component (3) is set on the base (2). The driving end of the first telescopic component (3) is connected to the box (1) and is used to drive the box (1) to move in the vertical direction. An air storage component (4) is installed on the housing (1). The air storage component (4) is used to store compressed gas. The air storage component (4) is connected to the first telescopic component (3) through an air pipeline. And a triggering mechanism connected to the gas storage unit (4), the triggering mechanism being used to open the gas storage unit (4) in response to an increase in the external water level. When the triggering mechanism opens the gas storage component (4), the compressed gas in the gas storage component (4) enters the first telescopic component (3) through the gas pipeline, driving the driving end of the first telescopic component (3) to extend and push the box (1) upward.

2. The outdoor anti-aging sealed cable branch box according to claim 1, characterized in that, The first telescopic component (3) is a cylinder. The cylinder body is fixedly installed on the base (2). The piston rod of the cylinder serves as the driving end. The piston rod extends vertically upward and is fixedly connected to the side wall of the box (1). The cylinder is equipped with a pawl locking mechanism. After the piston rod extends and pushes the housing (1) upward, the pawl locking mechanism is used to lock the piston rod to maintain the lifting height of the housing (1).

3. The outdoor anti-aging sealed cable branch box according to claim 1, characterized in that, The triggering mechanism includes a valve and a float (5). The valve includes a valve body, a valve core, and a handle (6) for controlling the opening and closing of the valve core. The float (5) is fixedly connected to the handle (6). The float (5) is used to move upward under the action of buoyancy after being submerged in water and drive the handle (6) to rotate, so as to open the valve.

4. The outdoor anti-aging sealed cable branch box according to claim 3, characterized in that, The floating component (5) has a hollow structure, and the material of the floating component (5) is plastic or foam with a density less than that of water; The base (2) is also provided with a protective cover (7), the triggering mechanism is located inside the protective cover (7), and the protective cover (7) is provided with a through hole (8) for external water to enter.

5. An outdoor anti-aging sealed cable branch box according to claim 1, characterized in that, Two guide rods (9) are fixedly installed on the base (2), and two limiting blocks (10) are fixedly installed on the side wall of the box (1). The two limiting blocks (10) are respectively movably sleeved on the corresponding guide rods (9). When the box (1) moves upward, the limiting blocks (10) slide along the guide rods (9).

6. The outdoor anti-aging sealed cable branch box according to claim 1, characterized in that, The box (1) includes a front panel (11), a rear panel, a left panel and a right panel, and a box door (12) is installed on the front panel (11). Rotating plates (13) are rotatably installed on the left and right panels at the four corners of the box door (12), and a support plate (14) is fixedly installed on the rotating plate (13). The branch box also includes four second telescopic components (15) disposed on the left panel and the right panel. The second telescopic components (15) are connected to the gas storage component (4) through the gas pipeline. The driving end of the second telescopic component (15) is used to extend under the drive of compressed gas and push the rotating plate (13) to rotate, so as to drive the support plate (14) to rotate to the inside of the box door (12) and abut against and support the box door (12).

7. An outdoor anti-aging sealed cable branch box according to claim 6, characterized in that, A magnetic component (16) is also fixedly installed on the support plate (14). The box door (12) is an iron box door (12). When the support plate (14) rotates to the inside of the box door (12), the magnetic component (16) is used to magnetically attract the box door (12).

8. An outdoor anti-aging sealed cable branch box according to claim 7, characterized in that, Both ends of the support plate (14) are fixedly provided with multi-section telescopic rods (17), and an expansion member (18) is fixedly provided between the free ends of the two multi-section telescopic rods (17). The multi-section telescopic rods (17) and the expansion member (18) are connected to the gas storage device (4) through the gas pipeline. When compressed gas enters the multi-section telescopic rod (17) and the expansion member (18), the multi-section telescopic rod (17) extends and abuts against the multi-section telescopic rod (17) on the adjacent support plate (14) to unfold the expansion member (18) and make the expansion member (18) face the gap between the box door (12) and the box body (1). After the expansion member (18) expands, it is used to fill the gap.

9. An outdoor anti-aging sealed cable branch box according to claim 8, characterized in that, The expansion component (18) is an airbag.

10. An outdoor anti-aging sealed cable branch box according to claim 9, characterized in that, The expansion member (18) is filled with magnetic powder. When the expansion member (18) expands and faces the gap, the magnetic powder is used to adhere to the box door (12) so that the expansion member (18) and the box door (12) are tightly attached.

Images