A fog-proof and dust-proof electric power meter

Abstract

The present invention belongs to the technical field of electronic instrument panels, and in particular, relates to an anti-fog and dustproof electric power meter, including an instrument body, and also including: a wiring port connected to the back of the instrument body, wherein a plurality of wiring boxes are arranged in the wiring port; a wire threading tube, which passes through and rotates in the wiring port; a wire rack, which is fixed to one end of the wire threading tube located outside the wiring port, wherein a plurality of clamping blocks are slidably connected in the wire rack, and notches for accommodating cables are provided on both sides of the clamping blocks; two pull ropes, which are both arranged in the wire threading tube, wherein one end of the two pull ropes is respectively fixed to the two clamping blocks at the edge of the wire rack, and the other end extends into the instrument body. The present invention can simultaneously realize multiple functions including the torsion storage of multiple cables, ventilation and heat dissipation inside the instrument body, and recycling of desiccant particles, and each function cooperates closely with each other to ensure that it has good anti-fog, dust-proof and heat dissipation capabilities.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic instrument panels, and in particular relates to an anti-fog and dust-proof electric power meter. Background Art

[0002] Power meters are widely used in power systems and industrial automation fields for power quality monitoring and power monitoring, and can provide flexible and efficient solutions for analysis.

[0003] In the prior art, for example, a fog and dust proof electric power meter disclosed in publication number CN116359564B ensures that one wiring port is always open by setting a resistance spring, a resistance block, a limit block, a U-shaped plate, a connecting rod and a protrusion, and the wiring of the next wiring port can be carried out only after the wiring of the previous wiring port is completed, thereby ensuring the correct wiring sequence.

[0004] However, the above solution still has the following problems in actual operation:

[0005] 1. Due to the setting of the wiring port, multiple cables are arranged separately and equidistantly. When multiple cables are led out for wiring, they are easy to be entangled and knotted due to their long length. This not only takes up a lot of space, but also causes troubles for later inspection and maintenance, and may even trip the staff or kick off the cable connectors, affecting their normal work;

[0006] 2. This solution only achieves anti-fog and dust prevention inside the power meter by sealing. However, since the power meter generates heat when working, if the power meter is sealed, the heat is difficult to dissipate in time. The high temperature will cause the rubber insulation layer on the surface of the cable to age, resulting in the risk of short circuit and even fire. While this solution can prevent fog and dust from blocking, it lacks heat dissipation inside the meter.

[0007] 3. Most of the existing technologies dissipate heat inside the instrument by opening a heat dissipation window. However, on the one hand, opening a heat dissipation window will affect its sealing effect. On the other hand, in a humid environment, it will also cause water vapor to gather inside the instrument, causing a short circuit risk. In addition, due to the temperature difference between the inside of the instrument and the external environment, water vapor is easy to form water mist on the glass surface of the instrument, which is inconvenient for staff to inspect. Most of the solutions in the existing technology are to place a desiccant to absorb water and moisture. However, the effective time of the desiccant for moisture absorption is limited and it needs to be replaced frequently, which is more troublesome. Summary of the invention

[0008] The object of the present invention is to provide a fog and dust proof electric power meter in view of the problems raised in the above background technology.

[0009] To achieve the above object, the present invention adopts the following technical scheme: an anti-fog and dust-proof electric power meter, comprising a meter body, and also comprising:

[0010] A wiring port connected to the back of the instrument body, wherein a plurality of wiring boxes are arranged in the wiring port;

[0011] The wire threading tube is inserted and rotated in the wiring row opening;

[0012] A wire rack is fixed to one end of the wire tube outside the wiring row port, and a plurality of clamping blocks are slidably connected inside the wire rack, and notches for accommodating cables are provided on both sides of the clamping blocks;

[0013] Two pull ropes are both arranged in the threading tube, one end of the two pull ropes is respectively fixed to the two clamping blocks at the edge of the wire rack, and the other end extends into the instrument body;

[0014] Two hydraulic rods are installed on the inner wall of the back of the instrument body, and the output ends of the two hydraulic rods are respectively connected to two pull ropes;

[0015] The gear drive assembly is used to drive the threading tube to rotate, and twist multiple cables into one strand through the cable rack.

[0016] Furthermore, a row of guide wheels is provided on the side wall of the notch, and the rotation direction of the guide wheels is consistent with the length direction of the cable, so that the cable can be pulled along the length direction on the cable rack.

[0017] Furthermore, a wire hole is provided on the clamping block located in the middle of the wire rack, and the pull rope passes through the wire hole.

[0018] Furthermore, permanent magnets are embedded in the clamping blocks, and the permanent magnets in adjacent clamping blocks have the same poles facing each other.

[0019] Furthermore, the gear drive assembly includes a gear ring coaxially fixed on the wire threading tube, and two winding wheels are rotatably connected to the inner wall on the back side of the instrument body through a disc spring. Driving gears are coaxially fixed on the two winding wheels. The two driving gears are symmetrically located on both sides of the gear ring and are meshed with the gear ring. The two pull ropes are respectively wound on the two winding wheels.

[0020] Furthermore, a rotating shaft is rotatably connected to the inner side wall of the back side of the instrument body, a fan and a driven gear are coaxially fixed to the rotating shaft, and the driven gear is meshed with the gear ring.

[0021] Furthermore, a ventilation box is fixed on the inner side wall of the back side of the instrument body, a drying cylinder is embedded on the side wall of the back side of the instrument body, the drying cylinder is filled with desiccant particles, mesh holes are opened on the surface of the drying cylinder, the drying cylinder adopts a "U"-shaped structure, the drying cylinder is composed of a dehumidification cylinder and a heating cylinder that are interconnected, the dehumidification cylinder and the heating cylinder are symmetrically arranged in a U-shaped structure, the dehumidification cylinder and the heating cylinder are respectively located on the inside and outside of the instrument body, and an electric heating plate is arranged on the side wall of the heating cylinder.

[0022] Furthermore, a spiral conveying blade is rotatably connected inside the drying cylinder, a blade shaft is provided in the middle of the spiral conveying blade, the upper end of the blade shaft extends out of the drying cylinder and is connected to a worm wheel, a worm is connected to the rotating shaft, and the worm wheel and the worm are meshed with each other.

[0023] Compared with the existing technology, the advantages of this anti-fog and dust-proof power meter are:

[0024] 1. The present invention provides a hydraulic rod, a pull rope and a clamping block. The pull rope can be pulled by the hydraulic rod to make the clamping blocks approach each other, clamp and fix multiple cables, and arrange them neatly on the cable rack;

[0025] In addition, by setting the winding wheel, driving gear and gear ring, when the hydraulic rod pulls the pull rope, it will drive the winding wheel to rotate, and then the threading tube drives the cable rack to rotate, twisting multiple cables into one strand, which can avoid entanglement and knotting due to excessive cables. On the one hand, it can facilitate later sorting and maintenance, and on the other hand, it can reduce the space occupied by cables and avoid workers from stepping on or tripping.

[0026] Since cables generate heat when working, it is difficult for multiple cables twisted into a strand to dissipate heat. By setting a coil spring and a permanent magnet, the pull rope can be loosened and reset by resetting the hydraulic rod. Under the action of the coil spring, the winding wheel rotates in the opposite direction, causing the cable rack to reverse and reset, and the multiple cables twisted into a strand are dispersed again for heat dissipation. Under the repulsive force of the permanent magnet, the clamping blocks move away from each other, pushing the cables to further disperse, accelerating the heat dissipation effect, and avoiding overheating of the cables.

[0027] 2. The present invention provides a ventilation box, a driven gear, a drying cylinder and a fan, and uses the gear ring as a driving force. When a plurality of cables are twisted into one strand, the fan is driven to rotate synchronously, and the outside air can be sucked into the ventilation box. The air passes through the drying cylinder to filter the water vapor and dust in the air and then enters the instrument body, thereby ensuring the anti-fog and dust-proof effect, and at the same time dissipating the heat inside the instrument body.

[0028] 3. The present invention provides a worm wheel, a worm and a spiral conveying blade, and uses the gear ring as a driving force to drive the spiral conveying blade to rotate, so that the desiccant particles move in the drying cylinder of the "U" shape structure, and the desiccant particles in the dehumidification cylinder that have absorbed a large amount of water are moved to the heating cylinder, and at the same time, the desiccant particles in the heating cylinder with good water absorption capacity are moved to the dehumidification cylinder, so as to ensure its good water absorption effect;

[0029] In addition, by setting up an electric heating plate, the desiccant in the heating cylinder can be heated to evaporate water vapor into the external environment, and then transported to the drying cylinder again through the spiral conveying blades, thereby ensuring its continuous circulation and effective water absorption capacity, and having a better anti-fog effect.

[0030] 4. The present invention can simultaneously realize multiple functions such as twisting and storing multiple cables, ventilation and heat dissipation inside the instrument body, and recycling of desiccant particles through the hydraulic rod, and each function cooperates closely with each other to ensure that it has good anti-fog, dust-proof and heat dissipation capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an anti-fog and dust-proof electric power meter provided by the present invention;

[0032] Figure 2 It is a structural schematic diagram of a ventilation box and a wiring outlet in a fog and dust proof electric power meter provided by the present invention;

[0033] Figure 3 It is a structural schematic diagram of the back side of a wiring row port in a fog and dust proof electric power meter provided by the present invention;

[0034] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0035] Figure 5 It is a structural schematic diagram of a wire rack in a fog and dust proof electric power meter provided by the present invention;

[0036] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0037] Figure 7 The present invention is a schematic diagram of the internal structure of a drying cylinder in a fog and dust proof electric power meter.

[0038] In the figure, 1 is an instrument body, 2 is a wiring port, 3 is a wiring box, 4 is a threading tube, 5 is a wiring rack, 6 is a clamping block, 7 is a notch, 8 is a pull rope, 9 is a hydraulic rod, 10 is a guide wheel, 11 is a wire hole, 12 is a permanent magnet, 13 is a gear ring, 14 is a winding wheel, 15 is a driving gear, 16 is a rotating shaft, 17 is a fan, 18 is a driven gear, 19 is a ventilation box, 20 is a drying cylinder, 21 is a dehumidification cylinder, 22 is a heating cylinder, 23 is an electric heating plate, 24 is a spiral conveying blade, 25 is a blade shaft, 26 is a worm gear, 27 is a worm, and 28 is a coil spring. DETAILED DESCRIPTION

[0039] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0040] like Figure 1-7 As shown, a fog and dust proof electric power meter comprises a meter body 1, and also comprises:

[0041] The wiring port 2 is connected to the back of the instrument body 1, and a plurality of wiring boxes 3 are arranged in the wiring port 2;

[0042] The threading tube 4 penetrates and rotates in the wiring row opening 2;

[0043] The wire rack 5 is fixed to one end of the wire threading tube 4 outside the wiring row port 2. A plurality of clamping blocks 6 are slidably connected inside the wire rack 5. Notches 7 for accommodating cables are provided on both sides of the clamping blocks 6. A row of guide wheels 10 are provided on the side walls of the notches 7. The rotation direction of the guide wheels 10 is consistent with the length direction of the cables, so that the cables can be pulled along the length direction on the wire rack 5. A wire hole 11 is provided on the clamping block 6 located in the middle of the wire rack 5, and the pull rope 8 passes through the wire hole 11.

[0044] Permanent magnets 12 are embedded in the clamping blocks 6. The permanent magnets 12 in adjacent clamping blocks 6 have the same poles facing each other. Two adjacent permanent magnets 12 always tend to move away from each other under the action of repulsion, so that the clamping blocks 6 are evenly distributed in the wire rack 5, which is convenient for threading operations.

[0045] Two pull ropes 8 are both arranged to penetrate the threading tube 4 , one end of the two pull ropes 8 is respectively fixed to the two clamping blocks 6 at the outermost edges of the wire rack 5 , and the other end extends into the instrument body 1 .

[0046] Two hydraulic rods 9 are installed on the inner wall of the back side of the instrument body 1. The output ends of the two hydraulic rods 9 are respectively connected to two pull ropes 8. When working, the pull ropes 8 can be pulled by the hydraulic rods 9 to make the clamping blocks 6 approach each other, clamp and fix multiple cables, and arrange them neatly on the cable rack 5. When the hydraulic rods 9 pull the pull ropes 8, they will drive the winding wheel 14 to rotate, and then the wire threading tube 4 will drive the cable rack 5 to rotate, twisting the multiple cables into one strand, which can avoid entanglement and knotting due to excessively long cables. On the one hand, it can facilitate later sorting and maintenance, and on the other hand, it can reduce the space occupied by cables to avoid staff from stepping on or tripping.

[0047] Since the cables generate heat when working, it is difficult for the twisted cables to dissipate heat. The pull rope 8 can be loosened and reset by resetting the hydraulic rod. The winding wheel 14 rotates in the opposite direction under the action of the coil spring 28, so that the cable rack 5 is reversed and reset, and the twisted cables are dispersed again for heat dissipation. Under the repulsive force of the permanent magnet 12, the clamping blocks 6 move away from each other, pushing the cables to further disperse, accelerating the heat dissipation effect, and avoiding overheating of the cables.

[0048] The gear drive assembly is used to drive the threading tube 4 to rotate, and twist multiple cables into a strand through the cable rack 5. The gear drive assembly includes a gear ring 13 coaxially fixed on the threading tube 4. Two winding wheels 14 are rotatably connected to the inner wall of the back side of the instrument body 1 through a coil spring 28. Driving gears 15 are coaxially fixed on the two winding wheels 14. The two driving gears 15 are symmetrically located on both sides of the gear ring 13 and are meshed with the gear ring 13. Two pull ropes 8 are respectively wound on the two winding wheels 14.

[0049] A rotating shaft 16 is rotatably connected to the inner wall on the back side of the instrument body 1, and a fan 17 and a driven gear 18 are coaxially fixed on the rotating shaft 16. The driven gear 18 is meshed with the gear ring 13. When working, the gear ring 13 is used as the driving force. When a plurality of cables are twisted into one strand, the fan 17 is driven to rotate synchronously, and the outside air can be sucked into the ventilation box 19. The air passes through the drying cylinder 20 to filter the water vapor and dust in the air and then enters the instrument body 1, thereby ensuring the anti-fog and dust-proof effect, and at the same time, the heat inside the instrument body 1 can be dissipated.

[0050] A ventilation box 19 is fixed on the inner wall of the back side of the instrument body 1, and a drying cylinder 20 is embedded on the side wall of the back side of the instrument body 1. The drying cylinder 20 is filled with desiccant particles. It should be noted that the desiccant particles adopt a smooth spherical structure to reduce the friction when they move in the drying cylinder 20. Meshes are provided on the surface of the drying cylinder 20. The drying cylinder 20 adopts a "U"-shaped structure. The drying cylinder 20 is composed of a dehumidification cylinder 21 and a heating cylinder 22 that are interconnected. The dehumidification cylinder 21 and the heating cylinder 22 are symmetrically arranged in a U-shaped structure. The dehumidification cylinder 21 and the heating cylinder 22 are respectively located on the inner and outer sides of the instrument body 1, and an electric heating plate 23 is arranged on the side wall of the heating cylinder 22.

[0051] A spiral conveying blade 24 is rotatably connected in the drying cylinder 20, a blade shaft 25 is provided in the middle of the spiral conveying blade 24, the upper end of the blade shaft 25 extends out of the drying cylinder 20 and is connected to a worm gear 26, a worm 27 is connected to the rotating shaft 16, and the worm gear 26 and the worm 27 are meshed with each other;

[0052] When working, the gear ring 13 is used as a driving force to drive the spiral conveying blade 24 to rotate, so that the desiccant particles move in the drying cylinder 20 of the "U"-shaped structure, and the desiccant particles in the dehumidification cylinder 21 that have absorbed a large amount of water are moved to the heating cylinder 22, and at the same time, the desiccant particles in the heating cylinder 22 with good water absorption capacity are moved to the dehumidification cylinder 21 to ensure its good water absorption effect;

[0053] The electric heating plate 23 can heat the desiccant in the heating cylinder 22, evaporate the water vapor into the external environment, and then transport it to the drying cylinder 20 again through the spiral transport blades 24, thereby ensuring its continuous circulation and effective water absorption capacity, and having a better anti-fog effect.

[0054] When the present invention is working, each cable is passed through the wiring box 3 in the wiring port 2, and then each cable is passed through each clamping block 6 in turn, and then the pull rope 8 is pulled in the direction away from each other by the hydraulic rod 9, so that the clamping blocks 6 are close to each other, and multiple cables are clamped and fixed, and neatly arranged on the wire rack 5. When the hydraulic rod 9 pulls the pull rope 8, it will drive the winding wheel 14 to rotate. Since the two driving gears 15 are engaged with the gear ring 13, the threading tube 4 drives the wire rack 5 to rotate, and the multiple cables are twisted into one strand, which can avoid entanglement and knotting due to excessive cable length. On the one hand, it can facilitate later sorting and maintenance, and on the other hand, it reduces the space occupied by cables to avoid staff stepping on or tripping.

[0055] Since the cables generate heat when working, it is difficult for the twisted cables to dissipate heat. The hydraulic rod 9 can be reset to loosen the pull rope 8, and the winding wheel 14 rotates in the opposite direction under the action of the coil spring 28, so that the cable rack 5 is reversed and reset, and the twisted cables are dispersed again for heat dissipation. Under the repulsive force of the permanent magnet 12, the clamping blocks 6 move away from each other, pushing the cables to be further dispersed, accelerating the heat dissipation effect, and avoiding overheating of the cables.

[0056] When the gear ring 13 rotates, the driven gear 18 and the gear ring 13, and thus the fan 17, can be driven to rotate synchronously, so that the outside air can be sucked into the ventilation box 19, and the air passes through the drying cylinder 20 to filter the water vapor and dust in the air and then enters the instrument body 1, thus ensuring the anti-fog and dust-proof effect, and at the same time, the heat inside the instrument body 1 can be dissipated;

[0057] When the gear ring 13 rotates, the driven gear 18 rotates synchronously with the gear ring 13. Because the worm wheel 26 and the worm 27 are meshed with each other, the spiral conveying blade 24 can be driven to rotate, pushing the desiccant particles to move in the drying cylinder 20 of the "U"-shaped structure, and moving the desiccant particles in the dehumidification cylinder 21 that have absorbed a large amount of water into the heating cylinder 22. At the same time, the desiccant particles in the heating cylinder 22 with good water absorption capacity are moved into the dehumidification cylinder 21 to ensure its good water absorption effect.

[0058] The electric heating plate 23 can heat the desiccant in the heating cylinder 22, evaporate the water vapor into the external environment, and then transport it to the drying cylinder 20 again through the spiral transport blade 24, so as to ensure its continuous circulation and effective water absorption capacity, and better anti-fogging effect;

[0059] The present invention can simultaneously realize multiple functions of twisting and storing multiple cables, ventilation and heat dissipation inside the instrument body 1, and recycling of desiccant particles through the hydraulic rod 9, and each function closely cooperates with each other to ensure that it has good anti-fog, dust-proof and heat dissipation capabilities.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fog and dust proof electric power meter, comprising a meter body (1), characterized in that: Also includes: A wiring port (2) is connected to the back of the instrument body (1), and a plurality of wiring boxes (3) are arranged in the wiring port (2); A wire threading tube (4) is inserted through and rotated in the wiring row opening (2); A wire rack (5) is fixed to one end of the wire threading tube (4) outside the wiring row opening (2), and a plurality of clamping blocks (6) are slidably connected inside the wire rack (5). Both sides of the clamping blocks (6) are provided with notches (7) for accommodating cables. Two pull ropes (8) are both arranged to penetrate the threading tube (4), one end of the two pull ropes (8) is respectively fixed to two clamping blocks (6) at the outermost edges of the wire rack (5), and the other end extends into the instrument body (1); Two hydraulic rods (9) are mounted on the inner wall of the back side of the instrument body (1), and the output ends of the two hydraulic rods (9) are respectively connected to two pull ropes (8); A gear drive assembly is used to drive a threading tube (4) to rotate, and twist a plurality of cables into a strand through a cable rack (5). The gear drive assembly comprises a gear ring (13) coaxially fixed to the threading tube (4). Two winding wheels (14) are rotatably connected to the inner wall of the back side of the instrument body (1) through a coil spring (28). A driving gear (15) is coaxially fixed to the two winding wheels (14). The two driving gears (15) are symmetrically located on both sides of the gear ring (13) and are meshed with the gear ring (13). The two pull ropes (8) are respectively wound around the two winding wheels (14). When the hydraulic rod (9) pulls the pull rope (8), it drives the winding wheels (14) to rotate. Since the two driving gears (15) are meshed with the gear ring (13), the threading tube (4) drives the cable rack (5) to rotate, and the plurality of cables are twisted into a strand.

2. The anti-fog and dust-proof electric power meter according to claim 1, characterized in that: A row of guide wheels (10) is provided on the side wall of the notch (7); the rotation direction of the guide wheels (10) is consistent with the length direction of the cable, so that the cable can be pulled along its length direction on the cable rack (5).

3. The anti-fog and dust-proof electric power meter according to claim 1, characterized in that: A wire hole (11) is provided on the clamping block (6) located in the middle of the wire rack (5), and the pull rope (8) passes through the wire hole (11).

4. The anti-fog and dust-proof electric power meter according to claim 1, characterized in that: The clamping blocks (6) are embedded with permanent magnets (12), and the permanent magnets (12) in adjacent clamping blocks (6) have the same poles facing each other.

5. The anti-fog and dust-proof electric power meter according to claim 4, characterized in that: A rotating shaft (16) is rotatably connected to the inner wall of the back side of the instrument body (1), a fan (17) and a driven gear (18) are coaxially fixed to the rotating shaft (16), and the driven gear (18) is meshed with the gear ring (13).

6. The anti-fog and dust-proof electric power meter according to claim 5, characterized in that: A ventilation box (19) is fixed on the inner side wall of the back of the instrument body (1), and a drying cylinder (20) is embedded on the side wall of the back of the instrument body (1). The drying cylinder (20) is filled with desiccant particles. The surface of the drying cylinder (20) is provided with mesh holes. The drying cylinder (20) adopts a "U"-shaped structure. The drying cylinder (20) is composed of a dehumidifying cylinder (21) and a heating cylinder (22) that are interconnected. The dehumidifying cylinder (21) and the heating cylinder (22) are symmetrically arranged in a U-shaped structure. The dehumidifying cylinder (21) and the heating cylinder (22) are respectively located on the inner and outer sides of the instrument body (1), and an electric heating plate (23) is arranged on the side wall of the heating cylinder (22).

7. The anti-fog and dust-proof electric power meter according to claim 6, characterized in that: A spiral conveying blade (24) is rotatably connected inside the drying cylinder (20), a blade shaft (25) is provided in the middle of the spiral conveying blade (24), the upper end of the blade shaft (25) extends out of the drying cylinder (20) and is connected to a worm gear (26), the rotating shaft (16) is connected to a worm (27), and the worm gear (26) and the worm gear (27) are meshed with each other.

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