External dehumidification and condensation prevention device for ring main unit

Abstract

The invention discloses an external ring main unit dehumidification and condensation prevention device, which comprises a cabinet body, two groups of ventilation seats are arranged in the cabinet body, a net machine part is erected on the surface of the ventilation seat at the lower part in the cabinet body, an inner plate assembly is arranged in the cabinet body, and the inner plate assembly comprises a partition plate and a flow guide plate; the partition plate is arranged at the position, close to the periphery of the net machine component, in the cabinet body, an airflow channel is formed between the partition plate and the cabinet body, buckling grooves are formed in the positions, close to the partition plate, of the upper side and the lower side in the cabinet body respectively, and the partition plate is connected with the output ends of the two execution electric cylinders through a C-shaped frame. The execution electric cylinder drives the partition plate to move up and down in the cabinet body; according to the ring main unit, the dehydration effect can be guaranteed while the gas flow direction is effectively changed, the energy utilization rate is improved, and the ring main unit can dehumidify the unit assemblies firstly and then dehumidify the cabinet wall.

Description

Technical Field

[0001] The invention relates to the technical field of dehumidification of power grid cabinets, and in particular to a dehumidification and anti-condensation device for an external ring main cabinet. Background Art

[0002] Ring main unit is an important equipment used in power system, mainly used in urban power distribution network and industrial power distribution system. The application scenarios include urban power grid, industrial park, residential area, commercial center, subway and railway. Ring main unit is usually composed of multiple units, each unit can be a circuit breaker unit, load switch unit, fuse combination unit, etc. It plays a vital role in power distribution, so the requirements for dust and moisture resistance are generally high.

[0003] During normal use of the ring main unit, due to the temperature difference between the inside and outside and the problem of sealing, condensation is very likely to occur on the inner wall of the ring main unit and the component units. As the condensation increases, arc flash will occur and damage the unit components. The current solution to this problem is basically to pass hot air into the ring main unit, which can effectively absorb moisture in the air.

[0004] However, in actual use, the fixation of the hot air inlet and outlet will cause a temperature difference step inside the ring network cabinet, which will lead to condensation in some positions. Moreover, the ring network cabinet is made of metal with good thermal conductivity. Condensation is very likely to occur on the inner wall of the ring network cabinet, resulting in internal water accumulation or arc flash, which makes the ring network cabinet very demanding on drying. It is necessary to ensure the continuous supply of hot air, which seriously reduces the energy utilization rate.

[0005] Therefore, how to provide an external ring main unit dehumidification and anti-condensation device is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0006] One purpose of the present invention is to propose an external ring network cabinet dehumidification and anti-condensation device, which can effectively ensure the dehydration effect while changing the gas flow direction, improve energy utilization rate, and enable the ring network cabinet to dehumidify the unit components first and then dehumidify the cabinet wall.

[0007] According to an embodiment of the present invention, an external ring main unit dehumidification and anti-condensation device comprises a cabinet, two sets of ventilation seats are arranged inside the cabinet, a mesh machine component is mounted on the surface of the ventilation seat at the lower part of the cabinet, an inner plate assembly is arranged inside the cabinet, and the inner plate assembly comprises a partition plate and a guide plate;

[0008] The partition plate is arranged inside the cabinet near the periphery of the mesh machine components, an airflow channel is formed between the partition plate and the cabinet, buckle grooves are respectively provided at the upper and lower sides of the cabinet near the partition plate, the partition plate is connected to the output ends of the two sets of actuator cylinders through a C-shaped frame, and the actuator cylinder drives the partition plate to move up and down inside the cabinet;

[0009] Two groups of butt-jointed valve plates are arranged opposite to each other inside the cabinet, one side of the butt-jointed valve plates is connected to the pull-swing assembly through a direct-connected shaft, and the direct-connected shaft is connected to the pressure support plate through the pull-swing assembly. The pressure support plate is movably arranged inside the cabinet near the buckle groove, and the partition plate pushes the pressure support plate to drive the butt-jointed valve plates to expand and close each other.

[0010] The bottom of one side of the cabinet is fixedly connected to a dehumidification system, which includes a closed box, two groups of hot air supply pipes and a moisture return pipe. The two groups of hot air supply pipes are respectively connected to two groups of ventilation seats inside the cabinet, and the other end of the hot air supply pipe is connected to the closed box. The two groups of moisture return pipes are respectively connected to the left and right sides of the air flow channel, and the connecting positions of the two groups of moisture return pipes and the air flow channel are respectively located at the top and bottom of the air flow channel.

[0011] Furthermore, a plurality of groups of guide plates are fixedly connected to the outer surface of the partition plate close to the airflow channel. The guide plates are fixed at an angle on the surface of the partition plate, and two adjacent groups of guide plates are distributed opposite to each other on the surface of the partition plate.

[0012] Furthermore, the two sides of the partition plate are fixed to the C-shaped frame through a connecting shaft, the C-shaped frame is fixed to the output end of the actuator electric cylinder, and the two groups of the actuator electric cylinders are fixed to the two sides of the outer surface of the cabinet.

[0013] Furthermore, a dehydration mechanism is arranged above the output end of the actuator cylinder on the outside of the cabinet, and the dehydration mechanism includes a C-shaped frame and an extrusion plate. Leakage-proof plates are fixedly arranged on both sides of the C-shaped frame. A sliding opening is opened at a position of the cabinet near the leakage-proof plate. The partition plate and the shaft fixed to the C-shaped frame slide in the sliding opening, and the leakage-proof plate slides on the outer surface of the cabinet.

[0014] Furthermore, an extrusion plate is fixedly arranged at the lower part of the C-shaped frame near the middle part of the back of the cabinet through a connecting rod, and the extrusion plate is arranged inside the closed box, and hygroscopic sponges are respectively arranged on the upper and lower sides of the closed box near the extrusion plate. The extrusion plate is driven by the C-shaped frame to squeeze the hygroscopic sponge inside the closed box.

[0015] Furthermore, an opening and closing valve mechanism is arranged inside the vent seat, and the opening and closing valve mechanism includes two sets of docking valve plates and a pressure support plate. The vent seat is provided with an air inlet near the upper position of the two sets of docking valve plates. The air inlet and the hot air supply pipe are aligned with each other, and the two sets of docking valve plates slide laterally on the opposite sides of the air inlet and the hot air supply pipe port.

[0016] Furthermore, the surface of the direct-connection shaft is fixedly connected to a spring rod, and the direct-connection shaft is elastically arranged inside the cabinet through the spring rod.

[0017] Furthermore, a pull-and-swing assembly is provided at one end of the direct-connected shaft, and the pull-and-swing assembly includes a rocker arm and a connecting pin. The rocker arm is hook-shaped, and a first slide groove and a second slide groove are respectively provided on both sides of the rocker arm. The direct-connected shaft slides in the second slide groove through the sliding pin, and the connecting pin slides in the first slide groove below through the sliding limit.

[0018] Furthermore, a rotating hole is provided at the angle position of the rocker arm, and the cabinet body is connected to the rotating hole through an insert rod near the rocker arm. The rocker arm rotates inside the cabinet body through the rotating hole, the connecting pin is fixed to the bottom of the pressure support plate, and the direct connecting shaft is fixed to the docking valve plate.

[0019] Furthermore, a return air chamber and an air outlet chamber are provided on the left and right sides of the closed box, the return air chamber is connected to the moisture return pipe, the air outlet chamber is connected to the hot air supply pipe, the other side of the return air chamber is connected to the moisture absorbent sponge, one side of the moisture absorbent sponge is connected to the condensation and dehydration component through a connecting pipe, and an air blowing component and a temperature control component are fixedly connected to the bottom of the closed box, the air blowing component and the temperature control component are connected to each other, the air blowing component is connected to the condensation and dehydration component, and the top opening of the temperature control component is connected to the air outlet chamber.

[0020] The beneficial effects of the present invention are:

[0021] The present invention arranges a partition plate inside the cabinet, and the existence of the partition plate forms an air flow channel between the partition plate and the inner wall of the cabinet. On the one hand, the formation of the channel facilitates the circulation of air inside the cabinet. On the other hand, both sides of the partition plate are in contact with hot air, so that the condensation area occurs on the inner wall of the cabinet. The existence of the partition plate can effectively prevent arc flash from occurring between the mesh machine components and the inner wall of the cabinet.

[0022] The present invention arranges an opening and closing valve mechanism at a position close to the partition plate inside the cabinet. When the partition plate is inserted into the snap-fit ​​groove opened on the inner side of the cabinet, on the one hand, the lower part of the partition plate is opened with the cabinet, and the air flow will enter the air flow channel between the partition plate and the cabinet from there, changing the actual gas flow direction and preventing the occurrence of temperature steps inside the cabinet. On the other hand, the partition plate will push the pressure support plate in the snap-fit ​​groove, and can pull the direct connection shaft under the connection of the pull-and-swing assembly, so that the two sets of docking valve plates are separated from each other, so that the gas can normally enter the vent seat from the air inlet, and then enter the cabinet through the vent seat for gas supply. Otherwise, the air inlet is closed under the action of the spring rod, so that the gas introduction direction is changed.

[0023] The present invention arranges an extrusion plate under the C-shaped frame, and the extrusion plate is located inside the closed box. When the C-shaped frame drives the partition plate to move up and down inside the cabinet, the extrusion plate will also squeeze the hygroscopic sponge inside the closed box. The hygroscopic sponge originally absorbs water vapor entering from the return air chamber, and mechanical dehydration will occur after being squeezed by the extrusion plate, thereby meeting the effect of reciprocating dehydration. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 This is a front schematic diagram of the overall structure of an external ring main unit dehumidification and anti-condensation device proposed by the present invention;

[0026] Figure 2 This is a partial cutaway schematic diagram of the back structure of an external ring main unit dehumidification and anti-condensation device proposed by the present invention.

[0027] Figure 3 This is a half-section structure diagram of the cabinet body of an external ring main unit dehumidification and anti-condensation device proposed in the present invention.

[0028] Figure 4 This is a schematic diagram of the half-section structure of the ventilation seat of the external ring main unit dehumidification and anti-condensation device proposed by the present invention.

[0029] Figure 5 This is a schematic diagram of the connection of the opening and closing valve mechanism of the external ring main unit dehumidification and anti-condensation device proposed by the present invention.

[0030] Figure 6 This is a schematic diagram of the disassembled structure of a partition plate of a dehumidification and anti-condensation device of an external ring main unit proposed by the present invention.

[0031] Figure 7 This is a schematic diagram of the internal structure position of a dehumidification system of an external ring main unit dehumidification and anti-condensation device proposed by the present invention.

[0032] Figure 8 An external ring main unit dehumidification and anti-condensation device proposed by the present invention Figure 2 A magnified schematic diagram of the structure at point A.

[0033] Fig. 9 An external ring main unit dehumidification and anti-condensation device proposed by the present invention Figure 5 Enlarged schematic diagram of the structure at point B.

[0034] In the figure: 1. Cabinet; 2. Ventilation seat; 3. Inner plate assembly; 4. Dehydration mechanism; 5. Actuator; 6. Opening and closing valve mechanism; 7. Dehumidification system; 8. Net machine components;

[0035] 31. Partition plate; 32. Guide plate; 33. Snap-fit ​​groove; 34. Air flow channel; 41. C-shaped frame; 42. Leak-proof plate; 43. Extrusion plate; 44. Slide; 45. Moisture-absorbing sponge; 61. Butt valve plate; 62. Air inlet; 63. Direct connecting shaft; 64. Spring rod; 65. Pull-and-swing assembly; 66. Support plate; 71. Closing box; 72. Return air chamber; 73. Exhaust chamber; 74. Hot air supply pipe; 75. Moisture return pipe; 76. Condensation and dehydration assembly; 77. Blowing assembly; 78. Temperature control assembly;

[0036] 651, rocker arm; 652, rotating hole; 653, first slide slot; 654, second slide slot; 655, connecting pin. DETAILED DESCRIPTION

[0037] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0038] refer to Figure 1-9 , comprising a cabinet 1, two sets of ventilation seats 2 are arranged inside the cabinet 1, a net machine component 8 is mounted on the surface of the ventilation seat 2 at the lower part of the cabinet 1, an inner plate assembly 3 is arranged inside the cabinet 1, and the inner plate assembly 3 includes a partition plate 31 and a guide plate 32;

[0039] The partition plate 31 is arranged in the cabinet 1 near the periphery of the net machine component 8, and an air flow channel 34 is formed between the partition plate 31 and the cabinet 1. The upper and lower sides of the cabinet 1 near the partition plate 31 are respectively provided with buckle grooves 33. The partition plate 31 is connected to the output ends of the two sets of actuator cylinders 5 through the C-shaped frame 41, and the actuator cylinder 5 drives the partition plate 31 to move up and down inside the cabinet 1;

[0040] Two groups of butt joint valve plates 61 are arranged opposite to each other inside the cabinet 1. One side of the butt joint valve plates 61 is connected to the pull-swing assembly 65 through a direct-connection shaft 63. The direct-connection shaft 63 is connected to the pressure support plate 66 through the pull-swing assembly 65. The pressure support plate 66 is movably arranged in the cabinet 1 near the buckle groove 33. The partition plate 31 pushes the pressure support plate 66 to drive the butt joint valve plates 61 to expand and close each other.

[0041] A dehumidification system 7 is fixedly connected to the bottom of one side of the cabinet 1. The dehumidification system 7 includes a closed box 71, two groups of hot air supply pipes 74 and a moisture return pipe 75. The two groups of hot air supply pipes 74 are respectively connected to the two groups of ventilation seats 2 inside the cabinet 1, and the other ends of the hot air supply pipes 74 are connected to the closed box 71. The two groups of moisture return pipes 75 are respectively connected to the left and right sides of the air flow channel 34, and the connecting positions of the two groups of moisture return pipes 75 and the air flow channel 34 are respectively located at the top and bottom of the air flow channel 34.

[0042] In this embodiment, the partition plate 31 is connected to the C-frame 41, so that after the execution electric cylinder 5 under the C-frame 41 is started, the partition plate 31 can be directly driven by the C-frame 41 to move up and down inside the cabinet 1, so that it is plugged into the buckle groove 33. At this time, the plugging position will be closed, and the other side of the partition plate 31 will be separated from the cabinet 1. In this way, the gas will first be dehumidified with the mesh machine component 8 before entering the cabinet 1, and the remaining hot air will then pass through the opening position of the partition plate 31 and the cabinet 1 into the air flow channel 34 to dehumidify the inner wall of the cabinet 1. The hot gas utilization rate is high, and the occurrence of arc flash is effectively prevented;

[0043] At the same time, due to the setting of the partition plate 31, the network machine component 8 is directly isolated from the inner wall of the cabinet 1. If an arc flash phenomenon occurs, the current passing through the network machine component 8 needs to first break through the air and then break through the partition plate 31 and the air flow channel 34 between the partition plate 31 and the inner wall of the cabinet 1 before it can contact the moist inner wall of the cabinet 1. Compared with the traditional ring main cabinet, the setting of the partition plate 31 can effectively reduce the probability of this situation, making it more difficult for the arc flash situation to occur between the network machine component 8 and the inner wall of the cabinet 1;

[0044] When the partition plate 31 is inserted into the buckle groove 33, the partition plate 31 will also squeeze the support plate 66. Under the connection of the pull-swing assembly 65, the movement of the support plate 66 will drive the direct-connection shaft 63 to move to one side, and at the same time pull the two sets of docking valve plates 61 away from each other to open the airway. At this time, the gas flows out from the vent seat 2 at the closed position of the partition plate 31 and the cabinet 1, passes through the mesh machine component 8, and then enters the airflow channel 34 from the other end of the partition plate 31. The degree of automation is high, and the change of gas flow direction and gas supply occur at the same time.

[0045] The dehumidification system 7 is directly connected to the ventilation seat 2 and the air flow channel 34 through the hot air supply pipe 74 and the moisture return pipe 75, which satisfies the circulation of gas inside the cabinet 1 and the dehumidification system 7, effectively removes moisture, and dries the inside of the cabinet 1.

[0046] refer to Figure 6 , multiple groups of guide plates 32 are fixedly connected to the outer surface of the partition plate 31 near the air flow channel 34. The guide plates 32 are fixed obliquely on the surface of the partition plate 31, and two adjacent groups of guide plates 32 are distributed opposite to each other on the surface of the partition plate 31. The two sides of the partition plate 31 are fixed to the C-shaped frame 41 through a connecting shaft. The C-shaped frame 41 is fixed to the output end of the actuator cylinder 5. The two groups of actuator cylinders 5 are fixed to the two sides of the outer surface of the cabinet 1.

[0047] In this embodiment, the setting of the guide plate 32 can effectively guide the condensation formed on the inner wall of the cabinet 1, so that it is evenly gathered at the bottom of the cabinet 1 for centralized drainage. A drainage pipe and a collection box can be set under the cabinet 1 to achieve this, which will not be elaborated here. The setting of the guide plate 32 can also increase the length of the gas flow channel, increase the actual stroke provided by the gas flow channel 34 for the gas, and further improve the utilization of hot air, so that the hot air can effectively contact the inner wall of the cabinet 1 and take away moisture;

[0048] On the other hand, the partition plate 31 is connected to the output end of the actuator cylinder 5 through the C-shaped frame 41. When the actuator cylinder 5 is driven, the partition plate 31 can be driven to move up and down inside the cabinet 1 through the C-shaped frame 41.

[0049] refer to Figure 6 and Figure 7 A dehydration mechanism 4 is arranged above the output end of the actuator cylinder 5 on the outside of the cabinet 1. The dehydration mechanism 4 includes a C-shaped frame 41 and a squeeze plate 43. Leakage-proof plates 42 are fixedly arranged on both sides of the C-shaped frame 41. A slide 44 is provided at a position of the cabinet 1 near the leak-proof plate 42. The partition plate 31 and the C-shaped frame 41 are fixedly connected and slide in the slide 44. The leak-proof plate 42 slides on the outer surface of the cabinet 1. A squeeze plate 43 is fixedly arranged below the middle section of the back of the cabinet 1 by a connecting rod. The squeeze plate 43 is arranged inside the closed box 71. Hygroscopic sponges 45 are arranged on the upper and lower sides of the closed box 71 near the squeeze plate 43. The squeeze plate 43 is driven by the C-shaped frame 41 to squeeze the hygroscopic sponge 45 inside the closed box 71.

[0050] In this embodiment, when the C-shaped frame 41 is lifted or pressed down by the electric cylinder 5, the squeezing plate 43 is synchronously driven to move up and down in a chamber inside the closed box 71 through the connecting rod, and the chamber inside the closed box 71 is close to the upper and lower sides of the squeezing plate 43. The hygroscopic sponge 45 is respectively arranged, so the movement of the squeezing plate 43 will squeeze the hygroscopic sponge 45 to discharge the moisture absorbed by the hygroscopic sponge 45, and how the water stains are gathered and collected under the chamber can be achieved through a suction pipe, which will not be elaborated here.

[0051] More specifically, it can be understood that the moisture absorbed by the closed box 71 from the cabinet 1 is first dehumidified by the moisture-absorbing sponge 45, and then returns to the interior of the cabinet 1 after subsequent secondary dehumidification and reheating.

[0052] refer to Figure 4 and Figure 5The ventilation seat 2 is provided with an opening and closing valve mechanism 6, which includes two sets of docking valve plates 61 and a pressure support plate 66. The ventilation seat 2 is provided with an air inlet 62 at an upper position close to the two sets of docking valve plates 61. The air inlet 62 and the hot air supply pipe 74 are aligned with each other, and the two sets of docking valve plates 61 slide horizontally on the opposite sides of the air inlet 62 and the hot air supply pipe 74. The surface of the direct-connection shaft 63 is fixedly connected to the spring rod 64, and the direct-connection shaft 63 is elastically arranged inside the cabinet 1 through the spring rod 64.

[0053] In the present embodiment, the air inlet 62 and the port of the hot gas supply pipe 74 are aligned with each other so that the hot gas passes through the air inlet 62 from the hot gas supply pipe 74 and then enters the cabinet 1 to realize the gas supply operation. A similar chamber is provided inside the cabinet 1 near the air inlet 62 and the hot gas supply pipe 74. The air inlet 62 and the port of the hot gas supply pipe 74 are closed and opened by the docking valve plate 61 to control the gas flow direction. The spring rod 64 fixed on the surface of the direct-connection shaft 63 provides the effect of maintaining elastic closure between the docking valve plates 61, so that the port of the air inlet 62 is in a normally closed state.

[0054] refer to Figure 4 , Figure 5 and Fig. 9 A pull-and-sway assembly 65 is provided at one end of the direct-connection shaft 63. The pull-and-sway assembly 65 includes a swing rod 651 and a connecting pin 655. The swing rod 651 is hook-shaped, and a first slide groove 653 and a second slide groove 654 are respectively provided on both sides of the swing rod 651. The direct-connection shaft 63 slides in the second slide groove 654 through the sliding pin limit, and the lower part of the connecting pin 655 slides in the first slide groove 653 through the sliding limit. A rotation hole 652 is provided at the angle position of the swing rod 651. The position of the cabinet 1 close to the swing rod 651 is plugged into the rotation hole 652 through the plug rod. The swing rod 651 rotates inside the cabinet 1 through the rotation hole 652. The connecting pin 655 is fixed to the bottom of the pressure support plate 66. The direct-connection shaft 63 is fixed to the docking valve plate 61.

[0055] In this embodiment, the direct-connected shaft 63 is connected to the pressure support plate 66 through a pull-and-swing assembly 65. When the position of the pressure support plate 66 changes, the pull-and-swing assembly 65 can drive the direct-connected shaft 63 to move to one side. Specifically, when the pressure support plate 66 is pressed down, the connecting pin 655 can provide a downward pressing effect to the first slide groove 653, and the rocker arm 651 rotates between the rotating hole 652 and the cabinet body 1, so that the downward pressing effect is converted into a rotation effect of the rocker arm 651. The second slide groove 654 opened on the other side of the rocker arm 651 will rise at this time, squeezing the direct-connected shaft 63 to move to one side, where the direct-connected shaft 63 can be converted into a linear motion effect, driving the docking valve plates 61 to move away from each other and squeeze the spring rod 64.

[0056] refer to Figure 7A return air chamber 72 and an air outlet chamber 73 are also provided on the left and right sides of the closed box 71. The return air chamber 72 is connected to the moisture return pipe 75, and the air outlet chamber 73 is connected to the hot air supply pipe 74. The other side of the return air chamber 72 is connected to the moisture absorbing sponge 45, and one side of the moisture absorbing sponge 45 is connected to the condensation and dehydration component 76 through a connecting pipe. A blast component 77 and a temperature control component 78 are fixedly connected to the bottom of the closed box 71. The blast component 77 and the temperature control component 78 are connected to each other, the blast component 77 is connected to the condensation and dehydration component 76, and the top opening of the temperature control component 78 is connected to the air outlet chamber 73.

[0057] In the present embodiment, the moisture entering the return air chamber 72 through the moisture return pipe 75 will first be absorbed by the moisture-absorbing sponge 45, and then enter the condensation and dehydration component 76 from one side for condensation and dehydration. The specific condensation operation can be achieved by introducing cold and heat sources and setting up a U-shaped tube to achieve basic heat exchange operations. This is the prior art and therefore will not be elaborated on in detail. The air that has undergone secondary dehydration passes through the blower component 77, which provides a gas flow effect for the entire device. After passing through the blower component 77, the air enters the temperature control component 78 for secondary heating, which can be achieved by electric heating. Finally, the gas enters the air outlet chamber 73, and re-enters the cabinet 1 through the hot air supply pipe 74 and the ventilation seat 2 for dehumidification.

[0058] Working principle: First, the air blowing component 77 in the dehumidification system 7 is driven to push the air into the temperature control component 78 for heating. The hot air passes through the hot air supply pipe 74 in the air outlet chamber 73 and enters the ventilation seat 2 inside the cabinet 1. The ventilation seat 2 can directly blow air into the cabinet 1. The gas first passes through the mesh machine component 8 to dehumidify the mesh machine component 8 to prevent condensation. Then, it passes through the end of the partition plate 31 and enters the air flow channel 34 formed between the partition plate 31 and the cabinet 1 to achieve dehumidification of the inner wall of the cabinet 1. The air is guided by the guide plate 32 in the air flow channel 34, and finally returns to the return air chamber 72 through the moisture return pipe 75. The humid air inside the return air chamber 72 is dehumidified by the primary dehumidification of the moisture absorbing sponge 45, and then dehumidified by the secondary dehumidification of the condensation and dehydration component 76, and finally sucked by the air blowing component 77, forming a basic cycle.

[0059] In the above situation, the dehumidification effect of the net machine component 8 far away from the air outlet position of the ventilation seat 2 is poor. At this time, the actuator electric cylinder 5 fixed on the outer surface of the cabinet 1 drives and pushes the C-frame 41 in the dehydration mechanism 4 to move upward. The C-frame 41 is fixed to the partition plate 31 through the connecting shaft, and will synchronously drive the partition plate 31 to move upward inside the cabinet 1. At the same time, under the protection of the leak-proof plate 42, the connecting shaft position slides in the sliding port 44 to prevent external air from entering the air flow channel 34 from the sliding port 44. Then the partition plate 31 is plugged into the buckle groove 33 inside the cabinet 1, and the lower part of the partition plate 31 is opened between the cabinet 1 and the upper part is closed. At the same time, the partition plate 31 will squeeze the opening and closing valve mechanism The support plate 66 in the structure 6 pushes the first slide groove 653 on one side of the swing rod 651 through the connecting pin 655. Under the restriction of the rotating hole 652, the swing rod 651 rotates, and the other side of the swing rod 651 pulls the direct connection shaft 63 through the second slide groove 654. The direct connection shaft 63 squeezes the spring rod 64 and pulls open the docking valve plate 61. At this time, the hot air supply pipe 74 can be normally connected with the air inlet 62, and the hot air enters the cabinet 1 from the ventilation seat 2 for dehumidification. On the other side, under the elastic action of the spring rod 64, the two sets of docking valve plates 61 are closed to each other, thereby changing the direction of hot air entry, thereby preventing the occurrence of temperature gradients inside the cabinet 1.

[0060] While the C-shaped frame 41 drives the partition plate 31 to move, the C-shaped frame 41 can drive the squeezing plate 43 to move up and down in a chamber inside the closed box 71 through the connecting rod, squeezing the hygroscopic sponge 45, and the hygroscopic sponge 45 can be dehydrated at this time, while the hygroscopic sponge 45 on the other side realizes air dehumidification.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An external ring main unit dehumidification and anti-condensation device, characterized in that: The cabinet (1) comprises two groups of ventilation seats (2) arranged inside the cabinet (1), a mesh machine component (8) is mounted on the surface of the ventilation seat (2) at the lower part of the cabinet (1), an inner plate assembly (3) is arranged inside the cabinet (1), and the inner plate assembly (3) comprises a partition plate (31) and a guide plate (32); The partition plate (31) is arranged inside the cabinet (1) at a position close to the periphery of the mesh machine component (8); an air flow passage (34) is formed between the partition plate (31) and the cabinet (1); buckle grooves (33) are respectively provided at positions close to the partition plate (31) on both upper and lower sides inside the cabinet (1); the partition plate (31) is connected to the output ends of two groups of actuator cylinders (5) through a C-shaped frame (41); and the actuator cylinder (5) drives the partition plate (31) to move up and down inside the cabinet (1); Two groups of butt joint valve plates (61) are arranged opposite to each other inside the cabinet (1); one side of the butt joint valve plates (61) is connected to the pull-swing assembly (65) through a direct-connection shaft (63); the direct-connection shaft (63) is connected to the pressure support plate (66) through the pull-swing assembly (65); the pressure support plate (66) is movably arranged inside the cabinet (1) near the buckle groove (33); the partition plate (31) pushes the pressure support plate (66) to drive the butt joint valve plates (61) to expand and close with each other; The bottom of one side of the cabinet (1) is fixedly connected to a dehumidification system (7), and the dehumidification system (7) comprises a closed box (71), two groups of hot air supply pipes (74) and a moisture return pipe (75). The two groups of hot air supply pipes (74) are respectively connected to two groups of ventilation seats (2) inside the cabinet (1), and the other ends of the hot air supply pipes (74) are connected to the closed box (71). The two groups of moisture return pipes (75) are respectively connected to the left and right sides of the air flow channel (34), and the connection positions of the two groups of moisture return pipes (75) and the air flow channel (34) are respectively located at the top and bottom of the air flow channel (34).

2. The external ring main unit dehumidification and anti-condensation device according to claim 1 is characterized in that: A plurality of groups of guide plates (32) are fixedly connected to the outer surface of the partition plate (31) close to the air flow channel (34); the guide plates (32) are fixedly inclined on the surface of the partition plate (31); and two adjacent groups of guide plates (32) are distributed opposite to each other on the surface of the partition plate (31).

3. The external ring main unit dehumidification and anti-condensation device according to claim 2 is characterized in that: The two sides of the partition plate (31) are fixed to a C-shaped frame (41) via a coupling, the C-shaped frame (41) is fixed to the output end of the actuator electric cylinder (5), and the two groups of the actuator electric cylinder (5) are fixed to the two sides of the outer surface of the cabinet (1).

4. The external ring main unit dehumidification and anti-condensation device according to claim 1, characterized in that: A dehydration mechanism (4) is arranged above the output end of the actuator cylinder (5) on the outside of the cabinet (1), the dehydration mechanism (4) comprising a C-shaped frame (41) and a squeezing plate (43), leak-proof plates (42) are fixedly arranged on both sides of the C-shaped frame (41), a sliding opening (44) is provided at a position of the cabinet (1) close to the leak-proof plate (42), the partition plate (31) and the C-shaped frame (41) are fixedly connected and slide in the sliding opening (44), and the leak-proof plate (42) slides on the outer surface of the cabinet (1).

5. The external ring main unit dehumidification and anti-condensation device according to claim 4, characterized in that: A squeezing plate (43) is fixedly arranged at the lower part of the middle section of the back of the cabinet (1) by a connecting rod, and the squeezing plate (43) is arranged inside the closed box (71). A hygroscopic sponge (45) is arranged at the upper and lower sides of the squeezing plate (43) inside the closed box (71), respectively. The squeezing plate (43) is driven by the C-shaped frame (41) to squeeze the hygroscopic sponge (45) inside the closed box (71).

6. The external ring main unit dehumidification and anti-condensation device according to claim 1, characterized in that: An opening and closing valve mechanism (6) is arranged inside the ventilation seat (2), and the opening and closing valve mechanism (6) includes two sets of docking valve plates (61) and a pressure support plate (66). The ventilation seat (2) is provided with an air inlet (62) at an upper position close to the two sets of docking valve plates (61), and the air inlet (62) and the hot air supply pipe (74) are aligned with each other, and the two sets of docking valve plates (61) slide transversely on the opposite sides of the air inlet (62) and the hot air supply pipe (74) port.

7. The external ring main unit dehumidification and anti-condensation device according to claim 6, characterized in that: The surface of the direct-connection shaft (63) is fixedly connected to a spring rod (64), and the direct-connection shaft (63) is elastically arranged inside the cabinet (1) via the spring rod (64).

8. The external ring main unit dehumidification and anti-condensation device according to claim 6, characterized in that: A pull-and-swing assembly (65) is provided at one end of the direct-connected shaft (63), and the pull-and-swing assembly (65) includes a rocker rod (651) and a connecting pin (655). The rocker rod (651) is hook-shaped, and a first slide groove (653) and a second slide groove (654) are respectively provided on both sides of the rocker rod (651). The direct-connected shaft (63) slides in the second slide groove (654) through a sliding pin limit, and the connecting pin (655) slides in the first slide groove (653) below through a sliding limit.

9. The external ring main unit dehumidification and anti-condensation device according to claim 8, characterized in that: A rotating hole (652) is provided at the angle position of the swing rod (651); a position of the cabinet (1) close to the swing rod (651) is plugged into the rotating hole (652) via an insertion rod; the swing rod (651) rotates inside the cabinet (1) through the rotating hole (652); the connecting pin (655) is fixed to the bottom of the pressure support plate (66); and the direct connection shaft (63) is fixed to the docking valve plate (61).

10. The external ring main unit dehumidification and anti-condensation device according to claim 1, characterized in that: The closed box (71) is also provided with an air return chamber (72) and an air outlet chamber (73) on the left and right sides thereof; the air return chamber (72) is connected to the moisture return pipe (75); the air outlet chamber (73) is connected to the hot air supply pipe (74); the other side of the air return chamber (72) is connected to the moisture absorbing sponge (45); one side of the moisture absorbing sponge (45) is connected to the condensation and dehydration component (76) through a connecting pipe; an air blowing component (77) and a temperature control component (78) are fixedly connected to the bottom of the closed box (71); the air blowing component (77) and the temperature control component (78) are connected to each other; the air blowing component (77) is connected to the condensation and dehydration component (76); the top opening of the temperature control component (78) is connected to the air outlet chamber (73).

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