An integrated distribution network low-voltage cable branch box state monitoring device

Abstract

This invention relates to the field of cable distribution box technology, specifically disclosing an integrated low-voltage cable distribution box status monitoring device. The device includes a detection housing, inside which a humidity-sensing element is disposed. A dustproof plate is fixedly connected to the detection housing near the humidity-sensing element. The status monitoring device also includes a dehumidification assembly disposed inside the detection housing. The dehumidification assembly includes an air inlet pipe fixedly inserted into the bottom of the detection housing. A partition is fixedly connected inside the detection housing, and a heating wire is installed inside the partition. A spray frame is rotatably connected to the side of the partition near the humidity-sensing element. Flexible rubber pads are fixedly connected between the top and bottom sides of the spray frame and the partition. Through the cooperation of the above structures, high-temperature air can enter the top position of the partition, and then the air is sprayed through the spray frame onto the humidity-sensing material of the humidity-sensing element, thereby removing moisture from the humidity-sensing element, reducing moisture retention errors, and thus reducing the impact on the accuracy of the detected humidity value.

Description

Technical Field

[0001] This invention relates to the field of cable branch box technology, and in particular to an integrated low-voltage cable branch box status monitoring device for power distribution networks. Background Technology

[0002] Low-voltage cable distribution boxes are mainly used for the connection, branching, relaying, or conversion of power cables. As a node in a trunk-type network, it distributes the electrical energy of the main cable to branch lines through multiple outgoing circuits, connecting them to end users or equipment, greatly facilitating the networked layout of cables. The interior of a low-voltage cable distribution box contains key electrical components such as cable joints, busbars, and insulators. Its insulation performance depends on the stability of the insulation material. In high-humidity environments, water vapor can penetrate the insulation material through diffusion, causing water treeing and forming microchannels, leading to a decrease in insulation resistance. In severe cases, this can cause cable breakdown and short-circuit faults. In southern my country, where air humidity is high, humidity monitoring of low-voltage cable distribution boxes is necessary. Resistive humidity sensors, with their low-cost moisture-sensing materials and interdigitated electrodes, and mature manufacturing processes, are widely used.

[0003] When excessive humidity is detected, dry air needs to be introduced in a reasonable and scientific manner. At this time, the resistive humidity sensor relies on the change in resistivity of the moisture-sensing material after it adsorbs water vapor to measure the humidity. When the humidity drops suddenly, the water molecules in the material are not easy to dehydrate quickly. This process has a lag, especially for polymer materials or porous ceramic materials. The mismatch between the moisture absorption and dehydration rates will lead to moisture lag error, which will affect the accuracy of the detected humidity value. To solve the above problems, an integrated low-voltage cable branch box status monitoring device for distribution networks is designed. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated low-voltage cable branch box status monitoring device for power distribution networks, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated low-voltage cable branch box status monitoring device for power distribution networks, comprising a box body, a detection shell installed on the inner side of the box body, a humidity sensing element disposed inside the detection shell, a dustproof plate fixedly connected to the detection shell near the humidity sensing element, the status monitoring device further comprising a dehumidification component disposed inside the detection shell, the dehumidification component comprising an air inlet pipe fixedly inserted into the bottom of the detection shell, a partition fixedly connected inside the detection shell, a heating wire installed inside the partition, a spray frame rotatably connected to the side of the partition near the humidity sensing element, flexible rubber pads fixedly connected between the top and bottom sides of the spray frame and the partition, a flexible dustproof net disposed at the bottom of the air inlet pipe, and an air generating component disposed inside the partition, the air generating component being used to generate an airflow from bottom to top inside the air inlet pipe.

[0006] Preferably, the air generating assembly includes a mounting bracket fixedly connected to the inside of the air inlet duct. A rotating sleeve is rotatably connected to the inside of the mounting bracket, and blades are fixedly connected to the outside of the rotating sleeve. A motor is fixedly connected to the bottom of one side of the mounting bracket. Transmission gears are fixedly connected to both the output shaft of the motor and the outside of the rotating sleeve, and the two transmission gears mesh with each other.

[0007] Preferably, two flow equalization plates are fixedly connected inside the partition, and the surface of the flow equalization plates is provided with through holes, with the through holes of the two flow equalization plates being staggered.

[0008] Preferably, the rotating sleeve is externally equipped with a swing assembly, which includes a reciprocating lead screw fixedly connected to the bottom of the rotating sleeve. The reciprocating lead screw is externally threaded with a lead screw sleeve. A lifting frame is fixedly connected to the bottom of the lead screw sleeve. A lifting rod is movably connected to the top of the rotating sleeve. A connecting frame is fixedly connected between the lead screw sleeve and the lifting frame. A driving plate is fixedly connected to the top of the connecting frame and the lifting rod through the flow equalization plate. A connecting block is rotatably connected to the side of the driving plate near the spray frame. The outside of the connecting block is fixedly connected to the spray frame. The connecting frame is slidably connected to the mounting frame.

[0009] Preferably, the bottom of the lifting frame is equipped with a shaking component, which includes a mounting rod fixedly connected to the bottom of the lifting frame. A bending frame is slidably connected inside the mounting rod. A bracket is configured at the bottom of the mounting rod. A small plate is fixedly connected to the bottom of the bracket. A flexible dustproof net is fixedly connected between the small plate and the inner side of the inlet duct. A recessed hole is provided at the top of the bracket, and a slot is provided on the side of the recessed hole.

[0010] Preferably, a U-shaped spring is fixedly connected between the mounting rod and the bending frame, and chamfers are provided on both the top and bottom sides of the card holder.

[0011] Preferably, a dust scraping assembly is configured on the outside of the partition. The dust scraping assembly includes a rotating cylinder rotatably connected inside the dustproof plate. A scraping cover is fixedly inserted into the end of the rotating cylinder. A flexible scraping strip is fixedly connected to the scraping cover near the dustproof plate. The top of the lifting rod extends out of the partition and is fixedly connected to an intermediate cover. A rack frame is fixedly inserted into the side of the intermediate cover. A locking tooth is provided on the side of the rack frame. A second gear is fixedly connected to the outside of the rotating cylinder. The outside of the second gear meshes with the locking tooth provided on the rack frame.

[0012] Preferably, a bellows is fixedly connected between the top of the intermediate cover and the inner side of the detection housing. A discharge pipe is fixedly inserted into the top of the bellows, and an inlet pipe is fixedly inserted into the bottom of the bellows. Both the inlet pipe and the discharge pipe are equipped with check valves.

[0013] Preferably, the end of the discharge pipe extends from the detection housing and the bottom of the inlet pipe is inserted into the interior of the intermediate cover. The rack frame is hollow inside, and a rotary joint is installed on the side of the rotating cylinder. A flexible pipe is fixedly inserted between the rotary joint and the bottom of the rack frame.

[0014] Preferably, the scraper cover has a suction hole on the side near the dustproof plate, and the suction hole is located on the side of the flexible scraper blade near the direction of rotation.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This allows hot air to enter the top of the partition, and then the air is sprayed through the ejector onto the moisture-sensing material of the moisture-sensing element, thereby removing moisture from the moisture-sensing element, reducing moisture retention errors, and thus reducing the impact on the accuracy of the detected humidity value. 2. When the drive plate moves, the angle of the connecting block can be deflected, and the angle of the spray frame can be changed continuously so that the heated air can be sprayed evenly onto the humidity sensing element, thereby improving the effect of removing moisture from the humidity sensing element. This design can further reduce the error caused by moisture retention, thereby reducing the impact on the accuracy of the detected humidity value. 3. The flexible dustproof net, mounting rod, bracket, and small plate move rapidly downwards, causing the flexible dustproof net to shake off the dust, reducing the possibility of clogging. This reduces the amount of air blown towards the humidity sensing element, ensuring the effectiveness of removing moisture from the element and reducing moisture retention errors, thus minimizing the impact on the accuracy of the humidity readings. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is an overall structural view of the present invention; Figure 2 This is an overall structural view of the outer casing of the present invention; Figure 3 This is a rear view schematic diagram of the detection shell structure of the present invention; Figure 4 This is a schematic diagram of the side half-section structure of the present invention; Figure 5 This is a side sectional view of the top position of the detection housing of the present invention; Figure 6 This is a schematic diagram of a half-section of the air inlet duct of the present invention; Figure 7 This is a half-section structural diagram of the bottom position of the air inlet duct of the present invention; Figure 8 This is a half-sectional view of the top position of the air inlet duct of the present invention; Figure 9 This is a schematic diagram of a half-section of the intermediate cover of the present invention; Figure 10 This is a side sectional view of the ejector frame of the present invention; Figure 11 This is a partial structural schematic diagram of the rotating cylinder of the present invention; Figure 12 This is a partial structural schematic diagram of the rotating cylinder of the present invention; Figure 13 This is a partial structural schematic diagram of the rotating cylinder of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Detection housing; 2. Moisture sensing element; 3. Dehumidification assembly; 31. Air inlet duct; 32. Shelf; 33. Heating wire; 34. Ejector frame; 35. Flexible dustproof net; 4. Air generation assembly; 41. Mounting frame; 42. Rotating sleeve; 43. Blades; 44. Motor; 45. Transmission gear; 5. Oscillating assembly; 51. Reciprocating lead screw; 52. Lead screw sleeve; 53. Lifting frame; 54. Lifting rod; 55. Connecting frame; 56. Drive plate; 57. Connecting block; 6. Vibration assembly; 61. Mounting rod; 62. Bending frame 63. Card holder; 64. Small plate; 65. Recessed hole; 66. Card slot; 67. U-shaped spring; 68. Bend; 7. Dust scraper assembly; 71. Rotating cylinder; 72. Scraper cover; 73. Flexible scraper blade; 74. Intermediate cover; 75. Rack and pinion frame; 76. Clamping tooth; 77. Second gear; 78. Bellows; 79. Discharge pipe; 710. Inlet pipe; 711. Check valve; 712. Rotary joint; 713. Flexible pipe; 714. Suction hole; 8. Dustproof plate; 9. Flow equalization plate; 10. Flexible rubber pad; 11. Box body. Detailed Implementation

[0019] 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.

[0020] Example 1: Please refer to Figures 1 to 13This invention provides a technical solution: an integrated low-voltage cable branch box status monitoring device for power distribution networks, comprising a box body 11, a detection housing 1 installed inside the box body 11, a humidity sensing element 2 disposed inside the detection housing 1, a dustproof plate 8 fixedly connected to the detection housing 1 near the humidity sensing element 2, and a dehumidification assembly 3 disposed inside the detection housing 1. The dehumidification assembly 3 includes an air inlet pipe 31 fixedly inserted into the bottom of the detection housing 1, and a partition 32 fixedly connected inside the detection housing 1. The partition 32 is equipped with an electric heating wire 33. The side of the partition 32 near the moisture sensing element 2 is rotatably connected to the spray frame 34. The top and bottom sides of the spray frame 34 are fixedly connected to the partition 32 with flexible rubber pads 10. The flexible rubber pads 10 are made of high temperature resistant rubber material. The bottom of the air inlet pipe 31 is equipped with a flexible dustproof net 35. The partition 32 is equipped with an air generating component 4. The air generating component 4 is used to generate an airflow from bottom to top inside the air inlet pipe 31. The moisture sensing material side of the moisture sensing element 2 is close to the spray frame 34.

[0021] The flexible dustproof net 35 and dustproof plate 8 can filter dust and prevent dust from reaching the position of the humidity sensing element 2, thereby avoiding the impact of dust on the detection accuracy. In addition, the water molecules in the air are small and can pass smoothly through the flexible dustproof net 35 and dustproof plate 8.

[0022] The air generating assembly 4 includes a mounting bracket 41 fixedly connected to the inside of the air inlet duct 31. A rotating sleeve 42 is rotatably connected to the inside of the mounting bracket 41. A blade 43 is fixedly connected to the outside of the rotating sleeve 42. A motor 44 is fixedly connected to the bottom of one side of the mounting bracket 41. A transmission gear 45 is fixedly connected to both the output shaft of the motor 44 and the outside of the rotating sleeve 42. The two transmission gears 45 mesh with each other.

[0023] By adopting the above technical solution, the status monitoring device is installed inside the low-voltage cable branch box. Water molecules diffuse in the air inside the low-voltage cable branch box and enter the humidity sensing element 2 through the dustproof plate 8. When there is too much moisture in the air, moisture adheres to the humidity sensing element 2, causing a change in the resistance at the position of the humidity sensing element 2, thus monitoring the humidity status. When the humidity inside the low-voltage cable branch box is detected to be high, dry air is introduced into the low-voltage cable branch box in a reasonable and scientific way. After the dry air is introduced, the humidity drops sharply, and the status monitoring of the low-voltage cable branch box needs to continue. The resistive humidity sensor relies on the change in resistivity of the humidity sensing material after absorbing water vapor to measure the humidity. When the humidity drops sharply, the water molecules in the material are not easy to dehydrate quickly, resulting in a mismatch between the moisture absorption and dehydration rates, which will lead to moisture hysteresis error.

[0024] Therefore, this solution includes a dehumidification component 3. After introducing dry air, the heating wire 33 is energized to heat the air inside the partition 32. The output shaft of the motor 44 rotates, causing the two transmission gears 45 to rotate, which in turn causes the rotating sleeve 42 to rotate. This causes the blades 43 to rotate as well. When the blades 43 rotate, the air inside the air inlet duct 31 moves from bottom to top. The relatively dry air inside the low-voltage cable branch box enters the air inlet duct 31 and then enters the interior of the partition 32. The air enters the position of the heating wire 33, allowing the hot air to enter the top position of the partition 32. Subsequently, the air is sprayed through the ejector 34 onto the moisture-sensing material of the moisture-sensing element 2, thereby removing moisture from the moisture-sensing element 2, reducing moisture retention errors, and thus reducing the impact on the accuracy of the detected humidity value.

[0025] The spacer 32 has two flow equalization plates 9 fixedly connected inside. The surface of the flow equalization plate 9 is provided with through holes, and the through holes of the two flow equalization plates 9 are arranged alternately.

[0026] By adopting the above technical solution, the through holes of the two flow equalizers 9 are staggered, which allows the air to move more evenly from bottom to top.

[0027] The rotating sleeve 42 is externally equipped with a swing assembly 5. The swing assembly 5 includes a reciprocating screw 51 fixedly connected to the bottom of the rotating sleeve 42. The reciprocating screw 51 is externally threaded with a screw sleeve 52. The bottom of the screw sleeve 52 is fixedly connected with a lifting frame 53. The top of the rotating sleeve 42 is movably connected with a lifting rod 54. A connecting frame 55 is fixedly connected between the screw sleeve 52 and the lifting frame 53. The top of the connecting frame 55 and the lifting rod 54 are fixedly connected to a driving plate 56 through the flow equalization plate 9. A connecting block 57 is rotatably connected to the side of the driving plate 56 near the spray frame 34. The outside of the connecting block 57 is fixedly connected to the spray frame 34. The connecting frame 55 is slidably connected to the mounting frame 41. A bend 68 is fixedly connected inside the air inlet pipe 31. The bottom of the bend 68 passes through the bottom of the lifting frame 53.

[0028] By adopting the above technical solution, when the rotating sleeve 42 rotates, the reciprocating screw 51 can rotate, thereby causing the screw sleeve 52 to move in the vertical direction. This allows the connecting frame 55 to move along the vertical direction with the lifting rod 54, which in turn allows the driving plate 56 to move in the vertical direction. When the driving plate 56 moves, the angle of the connecting block 57 can be deflected. This design allows the angle of the spray frame 34 to change continuously, so as to evenly spray the heated air onto the humidity sensing element 2, thereby improving the effect of removing moisture from the humidity sensing element 2. This design can further reduce the error caused by moisture retention, thereby reducing the impact on the accuracy of the detected humidity value.

[0029] The bottom of the lifting frame 53 is equipped with a shaking component 6. The shaking component 6 includes a mounting rod 61 fixedly connected to the bottom of the lifting frame 53. A bending frame 62 is slidably connected inside the mounting rod 61. A bracket 63 is configured at the bottom of the mounting rod 61. A small plate 64 is fixedly connected to the bottom of the bracket 63. A flexible dustproof net 35 is fixedly connected between the small plate 64 and the inner side of the air inlet duct 31. A recessed hole 65 is opened at the top of the bracket 63. A slot 66 is opened on the side of the recessed hole 65. A U-shaped spring piece 67 is fixedly connected between the mounting rod 61 and the bending frame 62. Chamfers are opened on both the top and bottom sides of the bracket 63. The flexible dustproof net 35 is made of an elastic material and can still block dust after the flexible dustproof net 35 is elastically deformed. A bend 68 is fixedly connected inside the air inlet duct 31. The bottom of the bend 68 passes through the bottom of the lifting frame 53.

[0030] By adopting the above technical solution, when the lead screw sleeve 52 moves downward with the lifting frame 53, the mounting rod 61 can move downward, and the bottom of the mounting rod 61 begins to insert into the recess 65. Simultaneously, as the mounting rod 61 inserts into the recess 65, the bottom of the bending frame 62 is limited by the clamp 63, causing the bending frame 62 to move towards the U-shaped spring 67. The U-shaped spring 67 deforms, and when the bottom of the bending frame 62 reaches the position of the slot 66, under the elastic force of the U-shaped spring 67, the bottom of the bending frame 62 can insert into the slot 66. Since the lead screw sleeve 52 continuously moves in the vertical direction, the lifting frame 53 can move upward with the mounting rod 61. At this time, under the action of the bottom of the bending frame 62 inserting into the slot 66, the clamp 63 can move upward with the small... As plate 64 moves upward, the flexible dustproof net 35 deforms. As mounting rod 61 continues to move upward, when the chamfered position at the top of bending frame 62 moves to a position close to the bottom of bend 68, the bending frame 62 can retract into the mounting rod 61 again under the limiting action of the bottom of bend 68. The bottom of bending frame 62 leaves the slot 66. At this time, under the elastic force of flexible dustproof net 35, flexible dustproof net 35, mounting rod 61, slot 63 and small plate 64 move downward quickly, realizing rapid shaking of flexible dustproof net 35 to shake off the dust at the flexible dustproof net 35, reducing the possibility of clogging of flexible dustproof net 35, thereby reducing the air volume blown towards humidity sensing element 2, thus ensuring the effect of removing moisture from humidity sensing element 2, thereby reducing the error caused by moisture retention, and thus reducing the impact on the accuracy of humidity detection.

[0031] The partition 32 is equipped with a dust scraping assembly 7. The dust scraping assembly 7 includes a rotating cylinder 71 rotatably connected inside the dustproof plate 8. A scraping cover 72 is fixedly inserted into the end of the rotating cylinder 71. A flexible scraping strip 73 is fixedly connected to the scraping cover 72 near the dustproof plate 8. The top of the lifting rod 54 extends out of the partition 32 and is fixedly connected to an intermediate cover 74. A rack frame 75 is fixedly inserted into the side of the intermediate cover 74. A locking tooth 76 is opened on the side of the rack frame 75. A second gear 77 is fixedly connected to the outside of the rotating cylinder 71. The outside of the second gear 77 meshes with the locking tooth 76 opened on the rack frame 75.

[0032] By adopting the above technical solution, when the lifting rod 54 moves in the vertical direction, the intermediate cover 74 can move in the vertical direction, thereby causing the rack frame 75 to move in the vertical direction. This allows the second gear 77 to rotate, which in turn causes the rotating cylinder 71 to rotate with the scraper cover 72. At this time, the flexible scraper 73 scrapes the outside of the dustproof plate 8 to prevent the dustproof plate 8 from being blocked, which would affect the smooth flow of external air to the humidity sensing element 2 and thus easily affect the detection accuracy of the humidity sensing element 2.

[0033] It should be noted that when the flexible scraper 73 scrapes the outside of the dustproof plate 8, air enters from the bottom and exits from the position of the dustproof plate 8, which can remove dust from the inside to the outside. The flexible scraper 73 scrapes the outside of the dustproof plate 8 to ensure the dust removal effect.

[0034] A bellows 78 is fixedly connected between the top of the intermediate cover 74 and the inner side of the detection housing 1. A discharge pipe 79 is fixedly inserted into the top of the bellows 78, and an inlet pipe 710 is fixedly inserted into the bottom of the bellows 78. Check valves 711 are installed inside both the inlet pipe 710 and the discharge pipe 79. The end of the discharge pipe 79 extends out from the detection housing 1, and the bottom of the inlet pipe 710 is inserted into the interior of the intermediate cover 74. The rack frame 75 is hollow inside. A rotary joint 712 is installed on the side of the rotating cylinder 71. A flexible pipe 713 is fixedly inserted between the rotary joint 712 and the bottom of the rack frame 75. A suction hole 714 is opened on the side of the scraper cover 72 near the dustproof plate 8. The suction hole 714 is located on the side of the flexible scraper 73 near the direction of rotation.

[0035] The principles and installation methods of check valve 711 and rotary joint 712 are mature existing technologies, and will not be elaborated further.

[0036] The check valve 711 installed in the inlet pipe 710 prevents air inside the bellows 78 from entering the intermediate cover 74. The check valve 711 installed in the outlet pipe 79 prevents external air from entering the bellows 78 through the outlet pipe 79. The end of the outlet pipe 79 extends from the detection housing 1 and is detachably connected to a dust collection cover. A mesh plate is provided on the side of the dust collection cover. This technology is a mature existing technology and will not be described in detail.

[0037] By adopting the above technical solution, when the lifting rod 54 moves along the vertical direction with the intermediate cover 74, the bellows 78 is continuously compressed and stretched. When the bellows 78 is compressed, air is discharged from the discharge pipe 79. When the bellows 78 is stretched, the suction hole 714 of the scraper cover 72 absorbs air, which facilitates the absorption of dust scraped off by the flexible scraper 73 and allows the dust to enter the interior of the rotating cylinder 71. Subsequently, the air enters the interior of the rotary joint 712 and then enters the hollow position inside the rack frame 75 through the flexible pipe 713. This allows the dust to enter the interior of the intermediate cover 74. Then, the dust enters the pipe 710 and enters the interior of the bellows 78. When the bellows 78 is compressed again, the dust enters the collection cover with the air. This design can improve the dust removal effect through absorption. At the same time, it can collect dust, reduce the amount of dust inside the integrated distribution network low-voltage cable branch box, and the collection cover can be disassembled periodically to empty the dust.

[0038] Working Principle: During use, this status monitoring device is installed inside a low-voltage cable branch box. Water molecules diffuse through the air inside the box, passing through the dustproof plate 8 and entering the humidity sensing element 2. When there is excessive moisture in the air, moisture adheres to the humidity sensing element 2, causing a change in resistance and monitoring the humidity status. The output shaft of the motor 44 rotates, causing two transmission gears 45 to rotate, which in turn rotates the rotating sleeve 42. This causes the blades 43 to rotate. When the blades 43 rotate, the air inside the air inlet duct 31 moves from bottom to top. The relatively dry air inside the low-voltage cable branch box enters the air inlet duct 31 and then into the partition 32. The air then enters the heating wire 33, causing the hot air to enter the top of the partition 32. The air is then sprayed through the ejector 34 onto the humidity sensing material of the humidity sensing element 2, removing moisture and reducing moisture retention errors, thus minimizing the impact on the accuracy of the detected humidity value.

[0039] When the rotating sleeve 42 rotates, it causes the reciprocating screw 51 to rotate, thereby causing the screw sleeve 52 to move vertically. This allows the connecting frame 55, along with the lifting rod 54, to move vertically, which in turn causes the driving plate 56 to move vertically. When the driving plate 56 moves, the angle of the connecting block 57 deflects. This design allows the angle of the spray frame 34 to continuously change, ensuring that the heated air is evenly sprayed onto the moisture-sensing element 2, thus improving the effect of removing moisture from the moisture-sensing element 2. The design further reduces moisture retention errors, thereby minimizing the impact on the accuracy of humidity detection. When the lead screw sleeve 52 moves downward with the lifting frame 53, it causes the mounting rod 61 to move downward as its bottom begins to insert into the recess 65. Simultaneously, the bottom of the bending frame 62 is limited by the clamp 63, causing it to move closer to the U-shaped spring 67. The U-shaped spring 67 deforms. When the bottom of the bending frame 62 reaches the position of the slot 66, the elastic force of the U-shaped spring 67... Under the action of the bending frame 62, the bottom of the bending frame 62 can be inserted into the slot 66. As the lead screw sleeve 52 moves continuously in the vertical direction, the lifting frame 53 can move upward with the mounting rod 61. At this time, under the action of the bottom of the bending frame 62 being inserted into the slot 66, the mounting frame 63 can move upward with the small plate 64, and the flexible dustproof net 35 will deform. As the mounting rod 61 continues to move upward, when the position where the top of the bending frame 62 has a chamfer moves to a position close to the bottom of the bend 68, under the action of the bottom limit of the bend 68, it can... The bending frame 62 retracts into the mounting rod 61 again, and the bottom of the bending frame 62 leaves the slot 66. At this time, under the elastic force of the flexible dustproof net 35, the flexible dustproof net 35, the mounting rod 61, the bracket 63 and the small plate 64 move downward quickly, so as to make the flexible dustproof net 35 shake quickly, so as to shake off the dust on the flexible dustproof net 35, reduce the possibility of the flexible dustproof net 35 clogging, thereby reducing the air volume blown towards the humidity sensing element 2, thus ensuring the effect of removing moisture from the humidity sensing element 2, thereby reducing the error caused by moisture retention, and thus reducing the impact on the accuracy of the detected humidity value.

[0040] The rack and pinion 75 moves vertically, causing the second gear 77 to rotate. This, in turn, causes the rotating cylinder 71 to rotate along with the scraper cover 72. During this rotation, the flexible scraper 73 scrapes the outside of the dustproof plate 8 to prevent blockage and ensure that external air can reach the humidity sensing element 2 smoothly, thus affecting the accuracy of the humidity sensing element 2. As the lifting rod 54 moves vertically along with the intermediate cover 74, the bellows 78 is continuously compressed and stretched. When the bellows 78 is compressed, air is discharged from the discharge pipe 79. When the bellows 78 is stretched, air is absorbed at the suction hole 714 of the scraper cover 72, which helps to absorb the dust scraped off by the flexible scraper 73. This allows the dust to enter the interior of the rotating cylinder 71. Subsequently, the air enters the interior of the rotary joint 712 and then enters the hollow part inside the rack and pinion 75 through the flexible pipe 713. This allows the dust to enter the interior of the intermediate cover 74. The dust then enters the pipe 710 and enters the interior of the bellows 78. When the bellows 78 is compressed again, the dust enters the collection cover along with the air.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated low-voltage cable branch box status monitoring device for power distribution networks, comprising a box body (11), a detection housing (1) installed on the inner side of the box body (11), a humidity sensing element (2) disposed inside the detection housing (1), and a dustproof plate (8) fixedly connected to the detection housing (1) near the humidity sensing element (2), characterized in that, The condition monitoring device also includes: The dehumidification component (3) is disposed inside the detection housing (1). The dehumidification component (3) includes an air inlet pipe (31) fixedly inserted into the bottom of the detection housing (1). A partition (32) is fixedly connected inside the detection housing (1). An electric heating wire (33) is installed inside the partition (32). A spray frame (34) is rotatably connected to the side of the partition (32) near the humidity sensing element (2). Flexible rubber pads (10) are fixedly connected between the top and bottom sides of the spray frame (34) and the partition (32). A flexible dustproof net (35) is disposed at the bottom of the air inlet pipe (31). An air generating component (4) is disposed inside the partition (32). The air generating component (4) is used to generate an airflow from bottom to top inside the air inlet pipe (31).

2. The integrated distribution network low-voltage cable branch box status monitoring device according to claim 1, characterized in that: The air generating assembly (4) includes a mounting bracket (41) fixedly connected to the inside of the air inlet pipe (31). A rotating sleeve (42) is rotatably connected to the inside of the mounting bracket (41). A blade (43) is fixedly connected to the outside of the rotating sleeve (42). A motor (44) is fixedly connected to the bottom of one side of the mounting bracket (41). A transmission gear (45) is fixedly connected to both the output shaft of the motor (44) and the outside of the rotating sleeve (42). The two transmission gears (45) mesh with each other.

3. The integrated distribution network low-voltage cable branch box status monitoring device according to claim 2, characterized in that: The spacer (32) has two flow equalization plates (9) fixedly connected inside. The surface of the flow equalization plate (9) is provided with through holes, and the through holes of the two flow equalization plates (9) are staggered.

4. The integrated distribution network low-voltage cable branch box status monitoring device according to claim 3, characterized in that: The rotating sleeve (42) is externally configured with a swing assembly (5). The swing assembly (5) includes a reciprocating screw (51) fixedly connected to the bottom of the rotating sleeve (42). The reciprocating screw (51) is externally threaded with a screw sleeve (52). The bottom of the screw sleeve (52) is fixedly connected with a lifting frame (53). The top of the rotating sleeve (42) is internally connected with a lifting rod (54). A connecting frame (55) is fixedly connected between the screw sleeve (52) and the lifting frame (53). The top of the connecting frame (55) and the lifting rod (54) are fixedly connected through the flow equalization plate (9) with a driving plate (56). The driving plate (56) is rotatably connected to a connecting block (57) on the side near the spray frame (34). The outside of the connecting block (57) is fixedly connected to the spray frame (34). The connecting frame (55) is slidably connected to the mounting frame (41).

5. The integrated distribution network low-voltage cable branch box status monitoring device according to claim 4, characterized in that: The bottom of the lifting frame (53) is equipped with a shaking component (6). The shaking component (6) includes a mounting rod (61) fixedly connected to the bottom of the lifting frame (53). A bending frame (62) is slidably connected inside the mounting rod (61). A card holder (63) is configured at the bottom of the mounting rod (61). A small plate (64) is fixedly connected to the bottom of the card holder (63). A flexible dustproof net (35) is fixedly connected between the small plate (64) and the inner side of the air inlet duct (31). A recessed hole (65) is opened at the top of the card holder (63). A card groove (66) is opened on the side of the recessed hole (65).

6. The integrated distribution network low-voltage cable branch box status monitoring device according to claim 5, characterized in that: A U-shaped spring piece (67) is fixedly connected between the mounting rod (61) and the bending frame (62). Chamfers are provided on both the top and bottom sides of the bracket (63). A bend (68) is fixedly connected inside the air inlet pipe (31). The bottom of the bend (68) passes through the bottom of the lifting frame (53).

7. The integrated distribution network low-voltage cable branch box status monitoring device according to claim 6, characterized in that: The partition (32) is equipped with a dust scraping assembly (7). The dust scraping assembly (7) includes a rotating cylinder (71) rotatably connected inside the dustproof plate (8). A scraping cover (72) is fixedly inserted at the end of the rotating cylinder (71). A flexible scraping strip (73) is fixedly connected to the scraping cover (72) near the dustproof plate (8). The top of the lifting rod (54) passes through the partition (32) and is fixedly connected to an intermediate cover (74). A rack frame (75) is fixedly inserted on the side of the intermediate cover (74). A locking tooth (76) is opened on the side of the rack frame (75). A second gear (77) is fixedly connected to the outside of the rotating cylinder (71). The outside of the second gear (77) meshes with the locking tooth (76) opened on the rack frame (75).

8. The integrated distribution network low-voltage cable branch box status monitoring device according to claim 7, characterized in that: A bellows (78) is fixedly connected between the top of the intermediate cover (74) and the inner side of the detection housing (1). A discharge pipe (79) is fixedly inserted into the top of the bellows (78), and an inlet pipe (710) is fixedly inserted into the bottom of the bellows (78). Check valves (711) are installed inside both the inlet pipe (710) and the discharge pipe (79).

9. The integrated distribution network low-voltage cable branch box status monitoring device according to claim 8, characterized in that: The end of the discharge pipe (79) extends out from the detection housing (1) and enters the bottom of the inlet pipe (710) and is inserted into the interior of the intermediate cover (74). The rack frame (75) is hollow inside. A rotary joint (712) is installed on the side of the rotating cylinder (71). A flexible pipe (713) is fixedly inserted between the rotary joint (712) and the bottom of the rack frame (75).

10. The integrated distribution network low-voltage cable branch box status monitoring device according to claim 9, characterized in that: The scraper cover (72) has a suction hole (714) on the side near the dustproof plate (8), and the suction hole (714) is located on the side of the flexible scraper (73) near the direction of rotation.

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