A distribution switchboard

Abstract

The present invention relates to the field of power electronics technology, and discloses a distribution box. A sealed box is connected between the wire management rack and the wire trough to isolate the cables led out from the box body from the outside world. A guiding sleeve is arranged in the sealed box, and both ends of the guiding sleeve communicate with the external space of the sealed box. A dehumidification tube is slidably inserted into the guiding sleeve. A dehumidifying agent is arranged in the dehumidification tube. Inner moisture absorption holes are formed in the tube wall of the dehumidification tube, and outer moisture absorption holes communicating with the inner moisture absorption holes are formed in the tube wall of the guiding sleeve. For the distribution box of the present invention, the cables led out from the distribution box are isolated from the outside world through the sealed box, which can effectively isolate most of the moisture in the outside world. And a small part of the moisture entering through the wire management holes on the wire management rack can be absorbed by the dehumidification tube in the guiding sleeve, further improving the dryness degree of the sealed box, thereby further reducing the moisture entering the distribution box, further making the operation of the distribution box more stable, and improving the service life and safety.

Description

Technical Field

[0001] The present invention relates to the field of power electronics technology, and particularly to a distribution switchboard. Background Art

[0002] A distribution switchboard is a device for power distribution and protection. Its main function is to distribute power from the main power source to each branch circuit or electrical equipment, and provide necessary protection measures to ensure safe operation. It is widely used in factories, schools, power plants, ships and other places. As Figure 1 and Figure 2 shown, they are respectively a schematic structural diagram of a distribution switchboard in the prior art and an enlarged view of part A of the structural diagram. It mainly includes a box body, and a wire passing groove for distributing cables to pass through is opened on the box body. In order to prevent the wire harness from being chaotic, a wire arranging rack is usually arranged on one side of the wire passing groove. A number of wire arranging holes are opened on the wire arranging rack. The cables led out from the wire passing groove will preferably pass through the corresponding wire arranging holes to realize the storage and classification of the wire harness, so as to ensure the neatness of the wire harness, facilitate subsequent maintenance, and improve the aesthetics.

[0003] However, in the actual use process, since the wire passing groove is in an exposed state, external moisture will enter the distribution switchboard through the wire passing groove. Especially on ships, the humidity is high and the moisture is heavy. Being in such an environment for a long time will accelerate the aging of the cables and components inside the box body, which not only affects the service life of the distribution switchboard, but also has a high potential safety hazard, so there is still room for improvement. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a distribution switchboard. The dehumidifying agent in the dehumidifying tube can effectively absorb the moisture near the wire passing groove, thereby reducing the moisture entering the box body, and further improving the operation stability of the distribution switchboard.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0006] A distribution box includes a box body, a wire threading groove is provided on the box body, a wire management rack is provided on one side of the wire threading groove, a closed box is connected between the wire management rack and the wire threading groove to isolate the cables led out of the box from the outside, a guide sleeve is provided in the closed box, both ends of the guide sleeve are connected to the external space of the closed box, a dehumidification pipe is slidably passed through the guide sleeve, a dehumidification agent is provided in the dehumidification pipe, an inner moisture absorption hole is provided on the pipe wall of the dehumidification pipe, and an outer moisture absorption hole connected to the inner moisture absorption hole is provided on the pipe wall of the guide sleeve; a port of the guide sleeve for the dehumidification pipe to enter is defined as a filling port, and the other port is defined as a waste discharge port. The outlet is provided with an elastic sealing ring 1 for squeezing the head end of the dehumidification pipe, and the tail end of the dehumidification pipe is provided with an elastic sealing ring 2 for squeezing the filling port; the tail end of the dehumidification pipe is connected with a spare dehumidification pipe, and the structure of the spare dehumidification pipe is the same as that of the dehumidification pipe; the box body is provided with a driving mechanism for pushing the spare dehumidification pipe into the guide sleeve and squeezing the dehumidification pipe out of the guide sleeve through the spare dehumidification pipe, and the driving mechanism is provided with a detection mechanism; when the driving mechanism pushes the spare dehumidification pipe, the detection mechanism is used to detect the tightness between the elastic sealing ring 1 and the dehumidification pipe and between the elastic sealing ring 2 and the guide sleeve.

[0007] By adopting the above scheme, the cables leading out of the distribution box are isolated from the outside world through a sealed box, which can effectively isolate most of the moisture from the outside world, and the small amount of moisture that enters through the cable management holes on the cable management rack can be absorbed by the dehumidification tube in the guide sleeve, further improving the dryness of the sealed box, thereby further reducing the moisture entering the distribution box, thereby making the operation of the distribution box more stable and improving the service life and safety. When the dehumidifier in the dehumidification tube is exhausted, the spare dehumidification tube is pushed into the guide sleeve through the driving mechanism, and the original dehumidification tube is squeezed out of the guide sleeve through the spare dehumidification tube, thereby completing the replacement of the dehumidification sleeve, thereby extending the endurance of the dehumidification tube. Elastic sealing ring 1 and elastic sealing ring 2 can respectively complete the sealing between the head end of the dehumidification tube and the waste outlet and the tail end of the dehumidification tube and the filling port, thereby preventing external moisture from entering the sealed box through the guide sleeve, thereby improving the sealing. When the driving mechanism pushes the spare dehumidification tube, the detection mechanism detects the tightness between the elastic sealing ring 1 and the dehumidification tube, and between the elastic sealing ring 2 and the guide sleeve, which can effectively determine the aging degree of the elastic sealing ring 1 and the elastic sealing ring 2. If the tightness decreases, it means that the service life of the elastic sealing ring 1 and the elastic sealing ring 2 has been exhausted. In order to ensure the sealing, the staff needs to replace them in time, thereby ensuring the dehumidification effect of the sealed box.

[0008] Preferably, the box body is provided with a spare storage sleeve which is docked with the filling port for the spare dehumidification pipe to slide through.

[0009] With the above - mentioned solution, the spare storage sleeve can help the spare dehumidification tube to be accurately docked with the filling port on the guiding sleeve and can play a guiding role, enabling the driving mechanism to accurately push the spare dehumidification tube into the guiding sleeve, thereby improving the operation efficiency and accuracy. At the same time, the spare storage sleeve can play a role in sealing and storing the spare dehumidification tube, preventing external moisture from entering the spare dehumidification tube, and thus ensuring the service life of the spare dehumidification tube.

[0010] Preferably, the driving mechanism includes a push rod acting on the tail end of the spare dehumidification tube and a power source arranged on the push rod and installed on the box body.

[0011] With the above - mentioned solution, the push rod has high hardness and strong guiding property. Cooperating with the power source, it can accurately and efficiently push the spare dehumidification tube forward, thus ensuring the working efficiency and accuracy of the driving mechanism.

[0012] Preferably, there is a connecting piece between the end of the push rod far from the spare dehumidification tube and the output end of the power source, and the push rod is detachably connected to the connecting piece.

[0013] With the above - mentioned solution, the connecting piece can not only complete the connection between the power source and the push rod, but also facilitate the installer to adjust the installation position of the power source according to needs, making the installation layout more reasonable. The detachable connection between the push rod and the connecting piece can conveniently leave space in front of the spare storage sleeve to facilitate the staff to fill the spare dehumidification tube into the spare storage sleeve, thus improving the operation efficiency and convenience.

[0014] Preferably, a connecting column is arranged at the end of the push rod far from the spare dehumidification tube. A connecting blind hole for inserting the connecting column is opened on the side of the connecting piece close to the spare dehumidification tube. A guiding groove for the connecting column to enter the connecting blind hole along the radial direction of the connecting blind hole extends from one side of the connecting blind hole, and the connecting column is fixed to the bottom of the connecting blind hole by a fastener.

[0015] With the above - mentioned solution, the push rod can be installed and disassembled along the direction perpendicular to its own length, avoiding being blocked by the spare storage sleeve during the disassembly and assembly process, and further improving the operation efficiency and convenience. The fastener can completely lock the connecting column, thereby fixing the push rod to the connecting piece and ensuring stability.

[0016] Preferably, a humidity sensor for detecting the humidity value inside the sealed box is arranged inside the sealed box. A controller is coupled to the humidity sensor, and the power source is coupled to and controlled by the controller. A humidity threshold is preset in the controller; when the humidity value measured by the humidity sensor is greater than or equal to the humidity threshold, the controller controls the power source to act to drive the push rod to push the spare dehumidification tube.

[0017] With the above solution, the humidity sensor can determine the replacement node of the dehumidification tube. If the humidity inside the sealed box is higher than the humidity threshold, it indicates that the dehumidifying agent in the dehumidification tube has failed and needs to be replaced. At this time, the controller controls the power source to act, so as to push the spare dehumidification tube into the guide sleeve through the ejector rod, thereby improving the replacement efficiency and accuracy of the dehumidification tube.

[0018] Preferably, the detection mechanism includes a pressing member arranged at one end of the ejector rod close to the spare dehumidification tube to press the tail end of the spare dehumidification tube, and a pressure sensor arranged on one side of the pressing member close to the spare dehumidification tube to detect the pressure value between the pressing member and the tail end of the spare dehumidification tube.

[0019] With the above solution, during the process of the driving mechanism pushing the spare dehumidification tube, the spare dehumidification tube can synchronously push the dehumidification tube forward. During this process, the tightness between the first elastic sealing ring and the dehumidification tube and between the second elastic sealing ring and the guide sleeve can be reflected by the sliding friction between the first elastic sealing ring and the outer side wall of the dehumidification tube and between the second elastic sealing ring and the inner side wall of the guide sleeve. The sum of the sliding frictions of the two parts can act on the dehumidification tube and the spare dehumidification tube being pushed, and then be fed back to the pressure sensor of the pressing member through the pressure. Therefore, by detecting the pressure value between the pressing member and the tail end of the spare dehumidification tube with the pressure sensor, the tightness between the first elastic sealing ring and the dehumidification tube and between the second elastic sealing ring and the guide sleeve can be indirectly judged, and then the aging degree of the first elastic sealing ring and the second elastic sealing ring can be calculated.

[0020] Preferably, a controller is coupled to the pressure sensor, and a prompting unit is coupled to the controller. A reference value is preset in the controller; when the pressure value measured by the pressure sensor is less than or equal to the reference value, the controller controls the prompting unit to work; otherwise, the prompting unit does not work.

[0021] With the above solution, when the pressure value measured by the pressure sensor between the pressing member and the tail end of the spare dehumidification tube is too small, it indicates that the aging degree of the first elastic sealing ring and the second elastic sealing ring is too high. At this time, the controller can control the prompting unit to work to remind the staff to replace the first elastic sealing ring and the second elastic sealing ring in time.

[0022] Preferably, a storage seat is arranged on the box body, and a storage groove for receiving and storing the dehumidification tube is formed on the upper surface of the storage seat and is docked with the waste discharge port.

[0023] With the above solution, the discharged dehumidification tube can be stably placed on the box body and is not easy to slide off, thus facilitating the staff to recycle it and being more user-friendly.

[0024] Preferably, the first elastic sealing ring is detachably connected to the waste discharge port, and the second elastic sealing ring is detachably connected to the tail end of the dehumidification tube.

[0025] With the above solution, it is more convenient to disassemble and replace the first elastic sealing ring and the second elastic sealing ring, further improving the operation efficiency and convenience.

[0026] Preferably, an installation groove communicating with its inner cavity is provided on the upper side of the closed box, and a cover is covered on the installation groove.

[0027] With the above solution, the installation groove can facilitate the staff to lead and arrange the wires of the distribution switchboard, and the cover can seal the installation groove, thereby ensuring the sealing performance of the closed box.

[0028] Since the present invention adopts the above technical solutions, it has remarkable technical effects: the cables led out from the distribution switchboard are isolated from the outside world through the closed box, which can effectively isolate most of the moisture from the outside world, and a small part of the moisture entering through the wire arranging holes on the wire arranging rack can be absorbed by the dehumidifying tube in the guiding sleeve, further improving the dryness degree of the closed box, thereby further reducing the moisture entering the distribution switchboard, and further making the operation of the distribution switchboard more stable, and improving the service life and safety. When the dehumidifying agent in the dehumidifying tube is exhausted, the spare dehumidifying tube is pushed into the guiding sleeve through the driving mechanism, and the original dehumidifying tube is extruded out of the guiding sleeve through the spare dehumidifying tube, thereby completing the replacement of the dehumidifying sleeve, and further prolonging the endurance of the dehumidifying tube. The first elastic sealing ring and the second elastic sealing ring can respectively complete the sealing between the head end of the dehumidifying tube and the waste discharge port and between the tail end of the dehumidifying tube and the filling port, thereby preventing the outside moisture from entering the closed box through the guiding sleeve, and further improving the sealing performance. During the process of pushing the spare dehumidifying tube by the driving mechanism, the detection mechanism detects the tightness between the first elastic sealing ring and the dehumidifying tube and between the second elastic sealing ring and the guiding sleeve, and can effectively judge the aging degree of the first elastic sealing ring and the second elastic sealing ring. If the tightness decreases, it indicates that the service life of the first elastic sealing ring and the second elastic sealing ring is exhausted. To ensure the sealing performance, the staff needs to replace them in time, thereby ensuring the dehumidifying effect of the closed box. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of a distribution switchboard in the prior art;

[0030] Figure 2 is Figure 1 an enlarged schematic view of part A shown;

[0031] Figure 3 is a schematic structure of this embodiment Figure 1 ;

[0032] Figure 4 is Figure 3 an enlarged schematic view of part B shown;

[0033] Figure 5 is a schematic structure of this embodiment Figure 2 ;

[0034] Figure 6 is Figure 5 an enlarged schematic view of part C shown;

[0035] Figure 7 a schematic view of the state when the ejector rod does not push the spare dehumidification tube in this embodiment;

[0036] Figure 8 is Figure 7 an enlarged schematic view of part D shown;

[0037] Figure 9 is Figure 7 an enlarged schematic view of part E shown;

[0038] Figure 10 is Figure 7 an enlarged schematic view of part F shown;

[0039] Figure 11 an exploded view of the dehumidification tube in this embodiment;

[0040] Figure 12 a schematic view of the state when the push rod pushes the spare dehumidification tube into the guide sleeve and the dehumidification tube is discharged in this embodiment;

[0041] Figure 13 a schematic structural view of the driving mechanism in this embodiment;

[0042] Figure 14 is Figure 13 an enlarged schematic view of part G shown;

[0043] Figure 15 a system architecture diagram of this embodiment;

[0044] Figure 16 a schematic structural view of the guide sleeve in this embodiment.

[0045] The names of the parts represented by each numerical label in the above drawings are as follows: 1. box body; 2. wire threading groove; 3. wire arranging rack; 4. sealed box; 5. cable; 6. guiding sleeve; 7. dehumidifying tube; 8. dehumidifying agent; 9. inner moisture absorption hole; 10. outer moisture absorption hole; 11. filling port; 12. waste discharge port; 13. first elastic sealing ring; 14. second elastic sealing ring; 15. spare dehumidifying tube; 16. driving mechanism; 17. detection mechanism; 18. spare storage sleeve; 19. ejector rod; 20. power source; 21. output end; 22. connecting piece; 23. connecting column; 24. connecting blind hole; 25. guiding groove; 26. fastener; 27. humidity sensor; 28. controller; 29. extrusion piece; 30. pressure sensor; 31. prompting unit; 32. storage seat; 33. storage groove; 34. installation groove; 35. cover; 36. box door; 37. wire arranging hole; 38. first screw; 39. annular mounting seat; 40. ear; 41. second screw; 42. hard base; 43. external threaded column; 44. arc chamfer; 45. detection hole; 46. guiding rib. Detailed implementation mode

[0046] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0047] As Figures 3 to 16 shown, a distribution switchboard disclosed in this embodiment includes a box body 1, and a box door 36 is pivotally connected to the front side of the box body 1. A wire threading groove 2 communicating with its own inner cavity is opened on the upper surface of the box body 1, and the wire threading groove 2 is rectangular. A wire arranging rack 3 is vertically arranged at the rear side of the wire threading groove 2, and a plurality of wire arranging holes 37 are arranged horizontally on the wire arranging rack 3. After a plurality of cables 5 in the box body 1 are led out through the wire threading groove 2, they respectively pass through the corresponding wire arranging holes 37 to complete the storage and arrangement of the cables 5. A sealed box 4 is fixedly connected between the wire arranging rack 3 and the wire threading groove 2 to isolate the cables 5 led out from the box body 1 from the outside. An installation groove 34 communicating with its own inner cavity is opened on the upper side of the sealed box 4, and a cover 35 is covered on the installation groove 34. In this embodiment, when the cover 35 is covered on the installation groove 34, both opposite side walls of the sealed box 4 are respectively fixed to the two side edges of the cover 35 by first screws 38, so as to complete the fixation of the cover 35.

[0048] In order to further reduce the humidity inside the sealed box 4, a cylindrical guide sleeve 6 is horizontally arranged inside the sealed box 4. The two ends of the guide sleeve 6 are respectively fixed to two opposite side walls of the sealed box 4 and communicate with the external space of the sealed box 4. A dehumidifying tube 7 is slidably inserted into the guide sleeve 6. A replaceable dehumidifying agent 8 is arranged inside the dehumidifying tube 7. A plurality of inner moisture absorption holes 9 are formed in the tube wall of the dehumidifying tube 7. The inner moisture absorption holes 9 are evenly distributed on the surface of the dehumidifying tube 7 and arranged along the length direction of the dehumidifying tube 7. Outer moisture absorption holes 10 communicating with the inner moisture absorption holes 9 are formed in the tube wall of the guide sleeve 6. The outer moisture absorption holes 10 are rectangular and evenly distributed on the surface of the guide sleeve 6, and each outer moisture absorption hole 10 is arranged along the length direction of the guide sleeve 6. Four guide ridges 46 are equidistantly arranged in a ring on the outer surface of the dehumidifying tube 7. The guide ridges 46 are arranged along the length direction of the dehumidifying tube 7, which can effectively improve the overall strength of the dehumidifying tube 7 and thus extend its service life. When the dehumidifying tube 7 enters the guide sleeve 6, the guide ridges 46 can abut against the inner side wall of the guide sleeve 6, so that a certain interval is maintained between the dehumidifying tube 7 and the tube wall of the guide sleeve 6, facilitating the communication between the outer moisture absorption holes 10 and the inner moisture absorption holes 9.

[0049] For the convenience of description, the port of the guide sleeve 6 through which the dehumidifying tube 7 enters is defined as the filling port 11, and the other port is defined as the waste discharge port 12. Both the filling port 11 and the waste discharge port 12 communicate with the external space of the sealed box 4. An elastic sealing ring one 13 for squeezing the head end of the dehumidifying tube 7 is arranged in a ring on the waste discharge port 12. An elastic sealing ring two 14 for squeezing the filling port 11 is arranged in a ring on the tail end of the dehumidifying tube 7. Both the elastic sealing ring one 13 and the elastic sealing ring two 14 are made of silica gel, so they have better elasticity and sealing performance, thus improving the sealing performance. In this embodiment, the elastic sealing ring one 13 is detachably connected to the waste discharge port 12, and the elastic sealing ring two 14 is detachably connected to the tail end of the dehumidifying tube 7. Specifically, a circular mounting seat 39 is fixed to the bottom of the elastic sealing ring one 13 by glue. The circular mounting seat 39 is butted against the waste discharge port 12. Four lugs 40 are arranged in a ring on the outer side of the circular mounting seat 39. Each lug 40 is fixed to the side wall of the sealed box 4 by a second screw 41. Correspondingly, the elastic sealing ring two 14 is sleeved on a rigid base 42 and fixed by glue. An external threaded column 43 is integrally arranged on the rigid base 42. The external threaded column 43 is threadedly screwed into the tail end port of the dehumidifying tube 7 to realize the fixed connection between the elastic sealing ring two 14 and the dehumidifying tube 7. An arc chamfer 44 is arranged in a circle on the edge of the head end of the dehumidifying tube 7, which can not only play a guiding role but also improve the fitting degree between the head end of the dehumidifying tube 7 and the elastic sealing ring one 13, thus increasing the sealing performance.

[0050] In order to achieve the replacement of the dehumidification pipe 7, the tail end of the dehumidification pipe 7 is connected with a spare dehumidification pipe 15. The relevant structure and size of the spare dehumidification pipe 15 are the same as those of the dehumidification pipe 7 in the guide sleeve 6, and it can serve as a supplement to the dehumidification pipe 7. A spare storage sleeve 18 is fixedly provided on the box body 1 and is sealed and connected to the filling port 11 for the spare dehumidification pipe 15 to slide through. The spare storage sleeve 18 is arranged along the length direction of the guide sleeve 6 and is connected to the guide sleeve 6. In this embodiment, the lengths of the dehumidification pipe 7, the spare dehumidification pipe 15, the guide sleeve 6 and the spare storage sleeve 18 are consistent. A driving mechanism 16 is provided on the box body 1 for pushing the spare dehumidification pipe 15 into the guide sleeve 6 and squeezing the dehumidification pipe 7 out of the guide sleeve 6 through the spare dehumidification pipe 15. Specifically, the driving mechanism 16 includes a push rod 19 acting on the tail end of the spare dehumidification pipe 15 and a power source 20 arranged on the push rod 19 and installed on the box body 1. The push rod 19 is coaxially arranged on the side of the spare storage sleeve 18 away from the guide sleeve 6, and its length is slightly greater than the length of the spare storage sleeve 18, so that the push rod 19 can completely push the spare dehumidification pipe 15 into the guide sleeve 6. The power source 20 is preferably an electric push rod fixed to the upper surface of the box body 1 and located on the side of the closed box 4 away from the cable management rack 3, and its output end 21 is connected to the end of the push rod 19 away from the spare dehumidification pipe 15 through a connector 22. One end of the connector 22 is fixed to the output end 21 of the electric push rod, and the other end is detachably connected to the push rod 19. Specifically, a connecting column 23 is integrally provided at one end of the top rod 19 away from the spare dehumidification pipe 15, and a connecting blind hole 24 for the connecting column 23 to be inserted is provided at a position of the connecting piece 22 away from the output end 21 and on a side close to the spare dehumidification pipe 15. A guide groove 25 for the connecting column 23 to enter the connecting blind hole 24 along the radial direction of the connecting blind hole 24 is extended outward from one side of the connecting blind hole 24. The connecting column 23 is fixed to the bottom of the connecting blind hole 24 by a fastener 26. The fastener 26 is preferably a quick-release screw. The quick-release screw penetrates into the connecting blind hole 24 from the side of the connecting piece 22 away from the top rod 19 and is screwed with the end face thread of the connecting column 23. When the quick-release screw is tightened, the fixing of the top rod 19 and the connecting piece 22 can be completed. When the quick-release screw is unscrewed, the locking of the connecting column 23 and the connecting blind hole 24 can be released, so that it is convenient for the staff to disassemble the top rod 19.

[0051] In order to conveniently store the dehumidification pipe 7 after discharge, a storage seat 32 having the same length as the dehumidification pipe 7 is fixedly provided on the upper surface of the box body 1 and on a side away from the spare storage sleeve 18. A storage groove 33 is provided on the upper surface of the storage seat 32 to connect with the waste outlet 12 to receive and store the dehumidification pipe 7. The storage groove 33 is in a concave arc shape and is provided along the discharge direction of the dehumidification pipe 7.

[0052] To achieve the automatic operation of the driving mechanism 16, a detection hole 45 communicating with its inner cavity is provided on the side wall of the sealed box 4. A humidity sensor 27 for detecting the humidity value inside the sealed box 4 is inserted into the detection hole 45. Sealant is filled between the humidity sensor 27 and the detection hole 45 to improve the sealing performance. A controller 28 is coupled to the humidity sensor 27. The controller 28 is preferably a single-chip microcomputer. The power source 20 is coupled to and controlled by the controller 28. A humidity threshold is preset in the controller 28, and this humidity threshold corresponds to the humidity value when the moisture in the sealed box 4 slightly rises when the dehumidifying agent 8 in the dehumidifying tube 7 fails.

[0053] To detect the aging degree of the first elastic sealing ring 13 and the second elastic sealing ring 14 on the dehumidifying tube 7, a detection mechanism 17 is provided on the driving mechanism 16. When the driving mechanism 16 pushes the spare dehumidifying tube 15, the detection mechanism 17 is used to detect the tightness between the first elastic sealing ring 13 and the outer side wall of the dehumidifying tube 7, and between the second elastic sealing ring 14 and the inner side wall of the guiding sleeve 6. The aging degree of the first elastic sealing ring 13 and the second elastic sealing ring 14 can be effectively judged through the tightness degree. Specifically, the detection mechanism 17 includes a pressing member 29 provided at one end of the ejector rod 19 close to the spare dehumidifying tube 15 to press the tail end of the spare dehumidifying tube 15, and a pressure sensor 30 provided on the side of the pressing member 29 close to the spare dehumidifying tube 15 to detect the pressure value between the pressing member 29 and the tail end of the spare dehumidifying tube 15. Among them, the pressing member 29 is in a disc shape and is coaxially fixed to the end of the ejector rod 19. The pressure sensor 30 is a pressure strain gauge, which is pasted on the end face of the pressing member 29 away from the ejector rod 19.

[0054] To help the staff timely know the aging condition of the first elastic sealing ring 13 and the second elastic sealing ring 14, the pressure sensor 30 is coupled to the signal input end of the controller 28. The output end 21 of the controller 28 is also coupled to a prompting unit 31. The prompting unit 31 is preferably a buzzer, which is fixed on the upper surface of the box body 1. A reference value is preset in the controller 28, and this reference value corresponds to the sum of the sliding frictional forces between the first elastic sealing ring 13 and the outer side wall of the dehumidifying tube 7, between the second elastic sealing ring 14 on the dehumidifying tube 7 and the inner side wall of the guiding sleeve 6, and between the second elastic sealing ring 14 on the spare dehumidifying tube 15 and the inner side wall of the spare storage sleeve 18 when the service lives of the first elastic sealing ring 13 and the second elastic sealing ring 14 are normal.

[0055] The specific working process is as follows:

[0056] When leading the wire for the distribution box, first remove the two first screws 38 to open the cover 35, thereby exposing the installation groove 34. Then, lead out multiple cables 5 from the wire passing groove 2 and sequentially pass them through the corresponding wire arranging holes 37, thus completing the storage and classification of the cables 5. During this process, in order to avoid excessive bending of the cables 5, the cables 5 can be routed from above the guiding sleeve 6, which can not only support the cables 5 but also make the cables 5 form a smaller bending angle. At the same time, it can prevent the guiding sleeve 6 and the wire arranging holes 37 from being blocked by the cables 5, thereby facilitating the outer moisture absorption holes 10 on the guiding sleeve 6 to absorb the moisture entering from the wire arranging holes 37.

[0057] After the wire leading is completed, cover the cover 35 again and fix it with the first screws 38. Then, remove the fastener 26 on the connecting piece 22 to remove the connecting column 23 on the ejector rod 19 along the guiding groove 25 from the connecting blind hole 24, thereby completing the disassembly of the ejector rod 19. At this time, first fill the dehumidifying tube 7 into the spare storage sleeve 18, and then fill the spare dehumidifying tube 15 to push the dehumidifying tube 7 into the guiding sleeve 6 through the spare dehumidifying tube 15. In this state, the head end of the dehumidifying tube 7 closely adheres to the first elastic sealing ring 13 to complete the sealing with the waste discharge port 12, thereby preventing water vapor from entering the guiding sleeve 6. At the same time, the second elastic sealing ring 14 on the spare dehumidifying tube 15 closely adheres to the inner side wall of the spare storage sleeve 18 to complete the sealing with the spare storage sleeve 18. Finally, slide the connecting column 23 on the ejector rod 19 into the connecting blind hole 24 through the guiding groove 25 again and fix it with the fastener 26, thereby completing the installation of the ejector rod 19, the spare dehumidifying tube 15 and the dehumidifying tube 7.

[0058] After the installation is completed, the desiccant 8 in the dehumidifying tube 7 can sequentially absorb the moisture entering the sealed box 4 from the wire arranging holes 37 through the inner moisture absorption holes 9 and the outer moisture absorption holes 10, so as to keep the inside of the sealed box 4 and the box body 1 dry, thereby enabling the distribution box to maintain a stable operating state. And the spare dehumidifying tube 15 in the spare storage sleeve 18 is in a closed state, so the loss of the desiccant 8 inside is extremely low.

[0059] During this process, the humidity sensor 27 can monitor the humidity value inside the sealed box 4 in real time. When the measured humidity value is greater than or equal to the humidity threshold, it indicates that the life of the dehumidifying agent 8 in the dehumidifying tube 7 is about to expire. Then, the controller 28 controls the power source 20 to act, so as to drive the pressing member 29 on the ejector rod 19 to push the spare dehumidifying tube 15, thereby driving the spare dehumidifying tube 15 into the guiding sleeve 6 and discharging the dehumidifying tube 7 by using the spare dehumidifying tube 15. When the head end of the spare dehumidifying tube 15 is closely attached to the inner side of the first elastic sealing ring 13, the dehumidifying tube 7 is completely discharged. After the discharged dehumidifying tube 7 passes through the expanded first elastic sealing ring 13, it directly enters the receiving groove 33 on the receiving seat 32 to complete the receiving and positioning. At this time, the controller 28 controls the prompting unit 31 to give an alarm in the first mode to remind the staff to replace the dehumidifying agent 8 in the dehumidifying tube 7 in time, and at the same time controls the power source 20 to reset the ejector rod 19.

[0060] When replacing the dehumidifying agent 8, first unscrew the hard base 42 at the tail end of the discharged dehumidifying tube 7 to expose the port at the tail end of the dehumidifying tube 7, so as to facilitate pouring out the dehumidifying agent 8 in the dehumidifying tube 7 and refilling new dehumidifying agent 8. Then, reinstall the hard base 42 through the external thread post 43. After the installation is completed, the dehumidifying tube 7 can be transformed into the spare dehumidifying tube 15. At this time, first remove the ejector rod 19, then reinsert the new spare dehumidifying tube 15 into the spare receiving sleeve 18, and make the second elastic sealing ring 14 at the tail end of the spare dehumidifying tube 15 closely attached to the inner side wall of the spare receiving sleeve 18 to complete the sealing. Finally, reinstall the ejector rod 19.

[0061] During the process of the ejector rod 19 pushing the spare dehumidifying tube 15, the pressure sensor 30 on the pressing member 29 can detect the pressure value between the pressing member 29 and the hard base 42 to judge the tightness between the first elastic sealing ring 13 and the outer side wall of the dehumidifying tube 7 and between the second elastic sealing ring 14 and the inner side wall of the guiding sleeve 6, so as to indirectly obtain the aging degree of the first elastic sealing ring 13 and the second elastic sealing ring 14. When the pressure value measured by the pressure sensor 30 is less than or equal to the reference value, it indicates that the tightness between the first elastic sealing ring 13 and the outer side wall of the dehumidifying tube 7 and between the second elastic sealing ring 14 and the inner side wall of the guiding sleeve 6 is poor, and then it is judged that the first elastic sealing ring 13 and the second elastic sealing ring 14 are aging severely and need to be replaced. At this time, the controller 28 controls the prompting unit 31 to work in the second mode to remind the staff to perform the replacement operation. Otherwise, the prompting unit 31 does not work.

[0062] When replacing the first elastic sealing ring 13, first remove all the second screws 41, and then remove the annular mounting seat 39 together with the first elastic sealing ring 13. Then, install the annular mounting seat 39 with the new first elastic sealing ring 13 at the waste discharge port 12 and fix it with the second screws 41.

[0063] When replacing the second elastic sealing ring 14, first unscrew the external thread column 43 from the tail end of the dehumidifying tube 7 through the hard base 42, and then thread the hard base 42 with the new second elastic sealing ring 14 back onto the tail end of the dehumidifying tube 7 through the external thread column 43.

[0064] During the above working process, the involved electronic control part can be realized by means of the program built in the controller 28 or an equivalent analog circuit, which belongs to the common knowledge in this field and will not be elaborated here.

Claims

1. A distribution switchboard, comprising a box body (1), a wire threading groove (2) is formed in the box body (1), a wire arranging rack (3) is arranged on one side of the wire threading groove (2), and the characteristics are as follows: A cable management rack (3) and a wire threading groove (2) are connected with a sealed box (4) to isolate the cables (5) led out from the box body (1) from the outside. A guiding sleeve (6) is arranged in the sealed box (4). Both ends of the guiding sleeve (6) communicate with the external space of the sealed box (4). A dehumidification tube (7) is slidably inserted into the guiding sleeve (6). A dehumidifying agent (8) is arranged in the dehumidification tube (7). Inner moisture absorption holes (9) are formed in the tube wall of the dehumidification tube (7). Outer moisture absorption holes (10) communicating with the inner moisture absorption holes (9) are formed in the tube wall of the guiding sleeve (6); Define the port of the guiding sleeve (6) for the dehumidification tube (7) to enter as the filling port (11), and the other port as the waste discharge port (12). An elastic sealing ring one (13) for squeezing the head end of the dehumidification tube (7) is arranged around the waste discharge port (12). An elastic sealing ring two (14) for squeezing the filling port (11) is arranged around the tail end of the dehumidification tube (7); The tail end of the dehumidification tube (7) is butted with a spare dehumidification tube (15). The structure of the spare dehumidification tube (15) is the same as that of the dehumidification tube (7); A driving mechanism (16) for pushing the spare dehumidification tube (15) into the guiding sleeve (6) and extruding the dehumidification tube (7) out of the guiding sleeve (6) through the spare dehumidification tube (15) is arranged on the box body (1). A detection mechanism (17) is arranged on the driving mechanism (16); When the driving mechanism (16) pushes the spare dehumidification tube (15), the detection mechanism (17) is used to detect the tightness between the elastic sealing ring one (13) and the dehumidification tube (7) and between the elastic sealing ring two (14) and the guiding sleeve (6).

2. The distribution switchboard according to claim 1, characterized in that: A spare storage sleeve (18) is arranged on the box body (1) and is butted with the filling port (11) for the spare dehumidification tube (15) to slidably penetrate through.

3. The distribution switchboard according to claim 1, characterized in that: The driving mechanism (16) includes a push rod (19) acting on the tail end of the spare dehumidification tube (15) and a power source (20) arranged on the push rod (19) and installed on the box body (1).

4. The distribution switchboard according to claim 3, wherein: A connecting piece (22) is arranged between the end of the push rod (19) far from the spare dehumidification tube (15) and the output end (21) of the power source (20). The push rod (19) is detachably connected with the connecting piece (22).

5. The distribution switch cabinet according to claim 4, characterized in that: A connecting column (23) is arranged at the end of the push rod (19) far from the spare dehumidification tube (15). A connecting blind hole (24) for the connecting column (23) to be inserted into is formed on the side of the connecting piece (22) close to the spare dehumidification tube (15). A guiding groove (25) for the connecting column (23) to enter the connecting blind hole (24) along the radial direction of the connecting blind hole (24) extends from one side of the connecting blind hole (24). The connecting column (23) is fixed at the bottom of the connecting blind hole (24) through a fastener (26).

6. A distribution switchboard according to claim 3 or 4 or 5, characterized in that: A humidity sensor (27) for detecting the humidity value in the sealed box (4) is arranged in the sealed box (4). A controller (28) is coupled to the humidity sensor (27). The power source (20) is coupled to and controlled by the controller (28). A humidity threshold is preset in the controller (28); When the humidity value measured by the humidity sensor (27) is greater than or equal to the humidity threshold, the controller (28) controls the power source (20) to act to drive the push rod (19) to push the spare dehumidification tube (15).

7. An electrical distribution box according to claim 3 or 4 or 5, characterized in that: The detection mechanism (17) includes a pressing member (29) disposed at one end of the ejector rod (19) close to the spare dehumidifying tube (15) to press the tail end of the spare dehumidifying tube (15), and a pressure sensor (30) disposed on the side of the pressing member (29) close to the spare dehumidifying tube (15) to detect the pressure value between the pressing member (29) and the tail end of the spare dehumidifying tube (15).

8. An electrical distribution box according to claim 7, characterized in that: A controller (28) is coupled to the pressure sensor (30), and a prompting unit (31) is coupled to the controller (28). A reference value is preset in the controller (28). When the pressure value measured by the pressure sensor (30) is less than or equal to the reference value, the controller (28) controls the prompting unit (31) to operate; otherwise, the prompting unit (31) does not operate.

9. A distribution switchboard according to any one of claims 1 to 5, characterized in that: A receiving seat (32) is provided on the box body (1), and a receiving groove (33) is formed on the upper surface of the receiving seat (32) for docking with the waste discharge port (12) to receive and accommodate the dehumidifying tube (7).

10. A distribution switchboard according to any one of claims 1 to 5, characterized in that: The first elastic sealing ring (13) is detachably connected to the waste discharge port (12), and the second elastic sealing ring (14) is detachably connected to the tail end of the dehumidifying tube (7).

11. A distribution switchboard according to any one of claims 1 to 5, characterized in that: An installation groove (34) communicating with the inner cavity of the closed box (4) is formed on the upper side of the closed box (4), and a cover (35) is covered on the installation groove (34).

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