A new outdoor power distribution cabinet with high protection level

Abstract

The application relates to a novel outdoor power distribution cabinet with high protection grade, which comprises a cabinet body, a protection door and a pressure assembly. One or more protection doors can open the front side opening of the sealed cabinet body. A sealing strip is arranged between the protection door and the cabinet body. The air tank of the pressure assembly and the adsorption dryer are arranged outside the containing cavity, the airflow nozzle is arranged in the containing cavity, and one or more air injection ports are arranged on the nozzle pipe to transport dry airflow into the containing cavity to keep the cabinet body in a positive pressure state. The application can keep the cabinet body in a positive pressure state to prevent external water vapor from entering, can protect the interior of the cabinet body in a dry environment even in the case of sealing failure, and prolongs the service life of the power distribution cabinet.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet technology, specifically a new type of outdoor power distribution cabinet with a high protection level. Background Technology

[0002] Outdoor distribution cabinets are critical equipment for power distribution at the end of a power system, and must withstand harsh climatic conditions such as sun exposure, rain, high humidity, high temperature, and sudden temperature changes. Therefore, the waterproof and moisture-proof performance of outdoor distribution cabinets directly affects the safety and reliability of the power distribution system. When the waterproof seal of the cabinet fails or the internal humidity is too high, moisture may cause serious accidents such as component corrosion, decreased insulation performance, short circuits, and even equipment burnout, posing a safety hazard to the power supply. Existing traditional rubber sealing strips and sealing rings are prone to aging and elasticity loss after long-term outdoor use, resulting in a gradual decline in sealing performance. Once damaged or ineffective, moisture can penetrate into the cabinet. Anti-condensation technology mostly uses consumable moisture-absorbing materials or passive ventilation methods, which have drawbacks such as limited moisture absorption capacity, difficult maintenance, and easy backflow of external moisture. Summary of the Invention

[0003] Based on the above-mentioned technical problems, this application provides a new type of outdoor power distribution cabinet with a high protection level, which aims to improve the protection performance of the power distribution cabinet to a certain extent and extend its service life.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A novel high-protection-level outdoor power distribution cabinet includes: a cabinet body with an open front and an internal cavity; one or more protective doors that can be opened to seal the open front of the cabinet body; a sealing strip disposed between the protective door and the cabinet body; and a pressure assembly comprising a gas tank, an adsorption dryer, and an airflow nozzle connected in sequence, wherein the gas tank and the adsorption dryer are disposed outside the cavity, the airflow nozzle is disposed inside the cavity, and the airflow nozzle has one or more air outlets on its body to deliver drying airflow into the cavity, thereby maintaining a positive pressure state inside the cabinet body.

[0005] In some embodiments, the adsorption dryer includes: a first tank and a second tank filled with adsorbent material, having a first end and a second end opposite to each other, the first end of the first tank and the first end of the second tank being controllably connected to the gas tank, the second end of the first tank and the second end of the second tank being controllably connected, and the second end of the first tank and the second end of the second tank being controllably connected to the airflow nozzle.

[0006] In some implementations, the adsorbent material in the first tank and the second tank is flowable.

[0007] In some implementations, a first air inlet is provided at the bottom of the first end of the first tank, and a second air inlet is provided at the bottom of the first end of the second tank. Both the first air inlet and the second air inlet are controllably connected to the gas tank.

[0008] In some embodiments, the interior of the first tank and the interior of the second tank are provided with a first support mesh and a second support mesh arranged opposite each other along the axial direction, the first support mesh and the second support mesh being elastic, and the active material being filled between the first support mesh and the second support mesh; the first air inlet and the second air inlet are both located between the first support mesh and the second support mesh.

[0009] In some embodiments, the adsorption dryer further includes: a first gas distribution module connected to a first end of the first tank and a second end of the second tank, the first gas distribution module having a first port, a second port and a third port communicating with each other, the first port communicating with the gas tank, the second port communicating with the first air inlet, a first control valve being provided in the second port, and the third port communicating with the second air inlet, a second control valve being provided in the third port.

[0010] In some implementations, the first end of the first tank is provided with a first exhaust port, and the first end of the second tank is provided with a second exhaust port; the first gas distribution module also has a fourth port and a fifth port, the fourth port being connected to the first exhaust port and a third control valve being provided in the fourth port; the fifth port being connected to the second exhaust port and a fourth control valve being provided in the fifth port.

[0011] In some implementations, a first air outlet is provided at the second end of the first tank, and a second air outlet is provided at the second end of the second tank; the adsorption dryer further includes a second gas distribution module, which connects the second end of the first tank and the second end of the second tank. The second gas distribution module has a sixth port, a seventh port, and an eighth port, wherein: the sixth port is connected to the first air outlet, the seventh port is connected to the second air outlet, and the sixth and seventh ports are connected through a transfer pipe, on which a fifth control valve is provided; the eighth port is controllably connected to both the first and second air outlets, and is also connected to the airflow nozzle, and a sixth control valve is provided inside the eighth port.

[0012] In some embodiments, the second gas distribution module further includes a seventh control valve and an eighth control valve, wherein the seventh control valve is disposed on the pipeline connecting the eighth port and the first gas outlet, and the eighth control valve is disposed on the pipeline connecting the first gas outlet.

[0013] In some implementations, the gas tank is equipped with a pressure gauge.

[0014] This application provides a novel high-protection-level outdoor power distribution cabinet. A sealing strip is installed between the protective door and the cabinet body, ensuring a certain degree of internal sealing and physically preventing external moisture from entering. Furthermore, the pressure assembly includes a gas tank, an adsorption dryer, and an airflow nozzle connected in sequence. The airflow nozzle is located within the receiving cavity and has one or more air nozzles. This configuration allows for the delivery of dry airflow into the receiving cavity, maintaining a positive pressure state within the cabinet to prevent external moisture from entering. Even in the event of seal failure, the cabinet's interior remains dry, extending the power distribution cabinet's service life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of a novel high-protection-level outdoor power distribution cabinet according to one or more embodiments of this application is shown; Figure 2 It shows Figure 1 A schematic diagram of the back of the power distribution cabinet; Figure 3 A schematic diagram of the sealing strip structure is shown; Figure 4 It shows Figure 2 Another structural diagram from a different perspective; Figure 5 A schematic diagram of the pressure assembly is shown; Figure 6 It shows Figure 5 A structural diagram showing the removal of the control module; Figure 7 A cross-sectional schematic diagram of the first tank is shown; Figure 8 A cross-sectional schematic diagram of the second tank is shown; Figure 9 A schematic diagram of the adsorption dryer is shown. Figure 10 It shows Figure 9 A structural diagram from another perspective.

[0017] Figure label: 100. Cabinet body; 110. Receiving cavity; 120. Frame; 130. Mounting cavity; 140. Maintenance door; 200. Protective door; 300. Sealing strip; 310. Groove; 320. Water-absorbing resin; 400. Pressure assembly; 410. Gas tank; 411. Pressure gauge; 420. Adsorption dryer; 421. First tank; 422. Second tank; 423. Control module; 424. Second support; 425. First air inlet; 426. Second air inlet; 427. First air outlet; 428. Second air outlet; 429. First exhaust port; 4210. Second exhaust port; 430. Air jet nozzle; 431. Air jet nozzle; 440. First support; 450. First support net; 460. Second support net; 470. First gas distribution module; 471. First port; 472. Second port; 473. Third port; 474. First control valve; 475. Second control valve; 476. Fourth port; 477. Fifth port; 478. Third control valve; 479. Fourth control valve; 480. Second gas distribution module; 481. Sixth port; 482. Seventh port; 483. Eighth port; 484. Transfer pipeline; 485. Fifth control valve; 486. Sixth control valve; 487. Seventh control valve; 488. Eighth control valve; 489. Connecting pipe. Detailed Implementation

[0018] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] The present application provides a novel high-protection-level outdoor power distribution cabinet. The design concept of the power distribution cabinet is that the cabinet achieves physical sealing through the sealing strips on the two protective doors, and a pressure group delivers dry airflow into the cabinet body to keep the cabinet body under positive pressure, thereby preventing external moisture from entering and ensuring the airtightness of the cabinet body.

[0020] Based on the above design concept and in conjunction with the attached drawings, the structural details of this outdoor power distribution cabinet are further described.

[0021] Figure 1 A schematic diagram of the structure of a novel high-protection outdoor power distribution cabinet according to one or more embodiments of this application is shown. Figure 2 It shows Figure 1 An internal diagram. Combined with... Figure 1 as well as Figure 2 The present application provides a novel high-protection outdoor power distribution cabinet comprising a cabinet 100, a protective door 200, a sealing strip 300, and a pressure assembly 400. The cabinet 100 has an open front and an internal cavity 110. The protective door 200 has one or more openings that seal the front opening of the cabinet. The sealing strip 300 is located between the protective door 200 and the cabinet 100. The pressure assembly 400 includes a gas tank 410, an adsorption dryer 420, and an airflow nozzle 430 connected in sequence. The gas tank 410 and the adsorption dryer 420 are located outside the cavity 110, while the airflow nozzle 430 is located inside the cavity 110. The airflow nozzle 430 has one or more nozzles 431 on its body to deliver dry airflow into the cavity 110, thereby maintaining a positive pressure inside the cabinet 100.

[0022] In this application, the internal cavity 110 of the cabinet 100 can be used to install electrical equipment, and the cabinet 100 is sealed by multiple protective doors 200. Since a sealing strip 300 is positioned between the protective doors 200 and the cabinet 100, external moisture is physically prevented from entering. Furthermore, the pressure assembly 400 includes a gas tank 410, an adsorption dryer 420, and an airflow nozzle 430 connected in sequence. The airflow nozzle 430 is located within the cavity 110. The tube body of the 0 is equipped with one or more air jets 431. This configuration allows the gas in the air tube to be supplied to the adsorption dryer 420. The adsorption dryer 420 produces dry gas from the gas and continuously delivers dry airflow into the cabinet 100 through the airflow nozzle 430, keeping the cabinet 100 dry and under positive pressure to prevent external moisture from entering. Even if the seal fails, it can protect the inside of the cabinet 100 from being in a dry environment, thus improving the service life of the distribution cabinet and demonstrating excellent practicality.

[0023] In some embodiments, the cabinet 100 is made of metal, so that the outdoor distribution cabinet has a metal casing. Specifically, the cabinet 100 can be made of any of the following materials: stainless steel (such as 304 or 316L), galvanized steel sheet (including hot-dip galvanized sheet and aluminized zinc sheet), cold-rolled steel sheet, and aluminum alloy. In actual selection, the choice can be made comprehensively based on the corrosion level of the installation environment, cost budget, and load-bearing requirements.

[0024] Combination Figure 1In some embodiments, a frame 120 for installing a protective door 200 is provided at the opening on the front side of the cabinet 100, and a sealing strip 300 is connected to the inner side of the frame 120. Exemplarily, two protective doors 200 are provided, and correspondingly, two frames 120 and two sealing strips 300 are also provided. Of course, in other embodiments, only one or more protective doors 200 may be provided, and this application does not impose any limitations on this.

[0025] In some embodiments, the sealing strip 300 can be attached to the inside of the frame 120 by adhesive bonding. In other embodiments, the sealing strip 300 can also be installed on the inside of the frame 120 by embedding. This application does not limit this.

[0026] Figure 3 A schematic diagram of the sealing strip is shown. (Combined with...) Figure 3 In some embodiments, a groove 310 is provided on the front side of the sealing strip 300 (the side mounted on the cabinet 100 facing the user). This groove 310 is filled with water-absorbing resin 320, which can absorb water and expand, allowing the sealing strip 300 to tightly abut against the protective door 200, thereby enabling the cabinet 100 to maintain a seal for a certain period of time even when partially immersed in water. For this application, grooves 310 are provided on both the front and rear sides of the sealing strip 300, and each groove 310 is filled with water-absorbing resin 320. Of course, it is also possible that only the front side of the sealing strip 300 is filled with water-absorbing resin 320; this application does not impose any limitations on this.

[0027] For example, the absorbent resin 320 can be made of superabsorbent polymer (SAP). Superabsorbent polymer is a functional polymer material with hydrophilic groups, capable of absorbing hundreds to thousands of times its own weight in water. After absorbing water, it swells to form a hydrogel, and the absorbed water is difficult to squeeze out even under pressure. Superabsorbent polymer is non-toxic, harmless, and pollution-free, and can repeatedly absorb and release water. When superabsorbent polymer is filled into the groove 310 of the sealing strip 300, when external moisture or liquid water comes into contact with the sealing strip 300, the superabsorbent polymer quickly absorbs water and expands in volume, allowing the sealing strip 300 to fit more tightly against the protective door 200, thereby achieving a dynamic sealing effect of "water stopping water." This material has been widely used in waterproof sealing fields such as water-swellable rubber and water-stop seals.

[0028] Combination Figure 1 In some embodiments, the airflow nozzle 430 is vertically erected in the receiving cavity 110 inside the cabinet 100 and closely attached to the side wall of the receiving cavity 110 to avoid affecting the assembly of the power distribution equipment inside the receiving cavity 110.

[0029] Figure 4 It shows Figure 2 A structural diagram from another perspective. Combined with... Figure 2 as well as Figure 4 In some embodiments, the cabinet 100 is provided with a mounting cavity 130, which is located above the receiving cavity 110. The gas tank 410 of the pressure assembly 400 and the adsorption dryer 420 are assembled in the mounting cavity 130. In addition, the cabinet 100 is provided with an openable maintenance door 140, which can be located on the rear side of the mounting cavity 130. The maintenance door 140 can be removed by the operator to maintain the pressure assembly 400.

[0030] In some embodiments, the adsorption dryer 420 and the gas tank 410 of the pressure assembly 400 are arranged side by side from left to right in the mounting cavity 130, with the inflation end of the gas tank 410 close to the maintenance door 140. Since the gas pipe needs to be inflated periodically during actual use, the arrangement of the inflation end of the gas tank 410 close to the maintenance door 140 in this application facilitates the inflation work of the gas tank 410 by the staff.

[0031] Figure 5 A schematic diagram of the pressure assembly is shown, combined with Figure 5 In some embodiments, the gas tank 410 is mounted on the bottom of the mounting cavity 130 via a first bracket 440. The middle part of the first bracket 440 is arc-shaped to match the shape of the gas tank 410, and the two sides of the first bracket 440 are L-shaped. The two sides of the first bracket 440 can be fixed to the bottom of the mounting cavity 130 by bolts.

[0032] Combination Figure 5 In some embodiments, the gas tank 410 is equipped with a pressure gauge 411. The pressure gauge 411 can display the remaining amount of high-pressure gas in the gas tank 410. Maintenance personnel can use its reading to estimate the replacement time of the gas tank 410 and determine whether it is working properly so that the adsorption dryer 420 can work normally.

[0033] Combination Figure 5 In some embodiments, the adsorption dryer 420 includes a control module 423, which serves as the control center of the adsorption dryer 420. This module is responsible for timing logic control, actuator driving, and operating condition monitoring, and works in conjunction with valve components to achieve adsorption / regeneration cycle switching and fluid flow direction and on / off control. Specifically, the control module 423 is mounted on the bottom of the receiving cavity 110 via L-shaped second brackets 424 on both sides, meaning there is a certain distance between the control module 423 and the bottom of the receiving cavity 110.

[0034] Figure 6 It shows Figure 5 A structural diagram showing the removal of the control module. (Combined with...) Figure 6In some embodiments, the adsorption dryer 420 includes a first tank 421 and a second tank 422 filled with adsorption material, which are arranged side by side in the mounting cavity 130, and the first tank 421 and the second tank 422 are fixed to the bottom of the mounting cavity 130 by the pressure of the control module 423.

[0035] Combination Figure 6 In some embodiments, both the first tank 421 and the second tank 422 have opposite first and second ends. The first ends of both tanks 421 and 422 are controllably connected to the gas tank 410, and the second ends of both tanks 421 and 422 are controllably connected. Furthermore, the second ends of both tanks 421 and 422 are controllably connected to the airflow nozzle 430. Gas in the gas tank 410 can only be injected into one tank at a time. This tank generates a dry gas flow and injects it into the cabinet 100 through the airflow nozzle 430 to maintain a positive pressure inside the cabinet 100. Meanwhile, the other tank simultaneously regenerates the gas. That is, the first tank 421 and the second tank 422 alternately perform adsorption drying and regeneration operations, enabling the pressure assembly 400 to continuously supply dry gas to the receiving cavity 110 for a long period, ensuring the continuity of the positive pressure protection of the distribution cabinet.

[0036] In some embodiments, the adsorbent material in the first tank 421 and the second tank 422 can be activated alumina, molecular sieve, or silica gel. Furthermore, the adsorbent material in the first tank 421 and the second tank 422 is arranged in a flowable manner. This arrangement allows the adsorbent material to flow to a certain extent when gas is injected into the first tank 421 and the second tank 422, meaning the adsorbent material in the first tank 421 and the second tank 422 is in a flowable state. This flow allows the adsorbent material to continuously tumble and rearrange under the action of airflow, avoiding fixed-bed adsorption and improving the utilization rate of adsorption capacity.

[0037] Figure 7 A cross-sectional schematic diagram of the first tank is shown. Figure 8 A cross-sectional schematic diagram of the second tank is shown. (Combined with...) Figure 7 as well as Figure 8 In some embodiments, a first air inlet 425 is provided at the bottom of the first end of the first tank 421, and a second air inlet 426 is provided at the bottom of the first end of the second tank 422. Both the first air inlet 425 and the second air inlet 426 are controllably connected to the gas tank 410. A first air outlet 427 is provided at the second end of the first tank 421, and a second air outlet 428 is provided at the second end of the second tank 422. With this configuration, when the gas flows in the first tank 421 or the second tank 422, it flows at an angle, which can blow the adsorbent material.

[0038] Combination Figure 7 as well as Figure 8 In some embodiments, a first support net 450 and a second support net 460 are provided inside the first tank 421 and the second tank 422, respectively. The first support net 450 and the second support net 460 are arranged opposite each other along the axial direction and are elastic. Active material is filled between the first support net 450 and the second support net 460. The first air inlet 425 and the second air inlet 426 are both located between the first support net 450 and the second support net 460. Filling the adsorbent material between the first support net 450 and the second support net 460 can prevent the adsorbent material from blocking the air outlet and hindering the flow of gas. The elasticity of the first support net 450 and the second support net 460 can block the high-pressure gas that should enter from the bottom air inlet and diffuse to the surroundings without damaging it. For example, the first support net 450 is close to the first end of the tank, the second support net 460 is close to the second end of the tank, and the first air inlet 425 and the second air inlet 426 are both close to the first support net 450 to extend the flow path of the airflow in the tank.

[0039] To achieve the above-mentioned flow effect, the following configuration is made in this application: (1) The adsorbent material is selected from particles with a sphericity of ≥90% and a particle size of 0.5 to 3.0 mm, and the filling rate is 70% to 90% of the tank volume; (2) The first support net 450 and the second support net 460 are elastic metal wire mesh or polymer material mesh, and the mesh size is 1 / 3 to 1 / 2 of the particle size; (3) The first air inlet 425 and the second air inlet 426 are located at the bottom of the tank and close to the first support net 450, and adopt the "upflow" flow mode of bottom air intake and top air exhaust.

[0040] Figure 9 A schematic diagram of the adsorption dryer is shown, combined with... Figure 9In some embodiments, the adsorption dryer 420 further includes a first gas distribution module 470, which is connected to the first end of the first tank 421 and the first end of the second tank 422. The first gas distribution module 470 has a first port 471, a second port 472 and a third port 473 that are in communication. The first port 471 can be connected to the gas tank 410 through a connecting pipe 489. The second port 472 is connected to the first air inlet 425. A first control valve 474 is provided in the second port 472. The third port 473 is connected to the second air inlet 426. A second control valve 475 is provided in the third port 473. The first gas distribution module 470 can guide the gas from the gas tank 410 to the first tank 421 or the second tank 422 respectively. When the first control valve 474 is open and the second control valve 475 is closed, the gas enters the first tank 421 through the first port 471, the second port 472 and the second air inlet 426. When the first control valve 474 is closed and the second control valve 475 is open, the gas enters the second tank 422 through the first port 471, the third port 473 and the second air inlet 426.

[0041] Combination Figures 7-9 In some embodiments, a first exhaust port 429 is provided at the first end of the first tank 421, and a second exhaust port 4210 is provided at the first end of the second tank 422. The first gas distribution module 470 also has a fourth port 476 and a fifth port 477. The fourth port 476 communicates with the first exhaust port 429, and a third control valve 478 is provided in the fourth port 476. The fifth port 477 communicates with the second exhaust port 4210, and a fourth control valve 479 is provided in the fifth port 477. Moisture is generated when regeneration is completed in the first tank 421 and the second tank 422. The moisture generated in the first tank 421 is discharged from the first exhaust port 429 through the fourth port 476, and the moisture generated in the second tank 422 is discharged from the second exhaust port 4210 through the fifth port 477.

[0042] Figure 10 It shows Figure 9 Another structural diagram from a different perspective, combined with Figure 10In some embodiments, the adsorption dryer 420 further includes a second gas distribution module 480, which is connected to the second end of the first tank 421 and the second end of the second tank 422. The second gas distribution module 480 has a sixth port 481, a seventh port 482, and an eighth port 483. The sixth port 481 is connected to the first gas outlet 427, and the seventh port 482 is connected to the second gas outlet 428. The sixth port 481 and the seventh port 482 are connected through a transfer pipe 484, and a fifth control valve 485 is provided on the transfer pipe 484. The eighth port 483 is controllably connected to the first gas outlet 427 and the second gas outlet 428, and is also connected to the airflow nozzle 430. A sixth control valve 486 is provided inside the eighth port 483.

[0043] After the gas is dehydrated and becomes dry gas in one of the tanks, it can be distributed through the second gas distribution module 480. For example, after the first tank 421 completes dehydration, the fifth control valve 485 is opened and the sixth control valve 486 is closed, allowing the gas to enter the sixth port 481 from the first outlet 427. The gas can also enter the second tank 422 along the transfer pipe 484 to regenerate the gas in the second tank 422; or, the fifth control valve 485 is closed and the sixth control valve 486 is opened. The control of the second tank 422 after dehydration is similar to that of the first tank 421, and will not be described in detail here.

[0044] Combination Figure 10 In some embodiments, the second gas distribution module 480 further includes a seventh control valve 487 and an eighth control valve 488. The seventh control valve 487 is disposed on the pipeline connecting the eighth port 483 and the first outlet 427, and the eighth control valve 488 is disposed on the pipeline connected to the first outlet 427. The seventh control valve 487 can control the flow rate of the high-pressure dry gas entering the eighth port 483 from the first outlet 427, thereby indirectly controlling the discharge volume of the airflow nozzle 430. The eighth control valve 488 can control the flow rate of the high-pressure dry gas entering the eighth port 483 from the second outlet 428, thereby indirectly controlling the discharge volume of the airflow nozzle 430.

[0045] It should be noted that in this application, the connection between each port can be achieved through the pipes built into the corresponding distribution module, which will not be elaborated upon in this application.

[0046] In summary, the novel high-protection outdoor distribution cabinet provided in this application can physically isolate the cavity 110 inside the cabinet 100 from the outside world using the sealing strip 300, and maintain positive pressure inside the cavity 110 of the cabinet 100 through the setting of the pressure component 400 to prevent external moisture from entering. The two work together to achieve a high level of waterproof sealing effect, thereby reducing maintenance frequency and cost, and has good practicality.

[0047] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0051] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A novel high-protection-level outdoor power distribution cabinet, characterized in that, The outdoor power distribution cabinet includes: The cabinet has an open front and an internal storage compartment. The cabinet is provided with one or more protective doors, and the front opening of the cabinet is sealed by the opening of the one or more protective doors. A sealing strip is installed between the protective door and the cabinet. The pressure assembly includes a gas tank, an adsorption dryer, and an airflow nozzle connected in sequence, wherein: The gas tank and the adsorption dryer are located outside the receiving cavity, while the airflow nozzle is located inside the receiving cavity. The airflow nozzle has one or more air outlets on its body to deliver drying airflow into the receiving cavity, thereby maintaining a positive pressure state inside the cabinet.

2. The novel high-protection-level outdoor power distribution cabinet according to claim 1, characterized in that, The adsorption dryer includes: A first tank and a second tank filled with adsorbent material have a first end and a second end facing away from each other. The first end of the first tank and the first end of the second tank are both controllably connected to the gas tank. The second end of the first tank and the second end of the second tank are controllably connected to each other. Furthermore, the second end of the first tank and the second end of the second tank are both controllably connected to the airflow nozzle.

3. The novel high-protection-level outdoor power distribution cabinet according to claim 1, characterized in that, The adsorbent material in the first tank and the second tank is flowable.

4. A novel high-protection-level outdoor power distribution cabinet according to claim 3, characterized in that, The first tank has a first air inlet at the bottom of its first end, and the second tank has a second air inlet at the bottom of its first end. Both the first air inlet and the second air inlet are controllably connected to the gas tank.

5. A novel high-protection-level outdoor power distribution cabinet according to claim 4, characterized in that, Both the interior of the first tank and the interior of the second tank are equipped with: A first support net and a second support net are arranged opposite each other along the axial direction. The first support net and the second support net are elastic, and the active material is filled between the first support net and the second support net. Both the first air inlet and the second air inlet are located between the first support mesh and the second support mesh.

6. A novel high-protection-level outdoor power distribution cabinet according to any one of claims 1-5, characterized in that, The adsorption dryer also includes: A first gas distribution module is connected to a first end of the first tank and a second end of the second tank. The first gas distribution module has a first port, a second port and a third port that are connected to each other. The first port is connected to the gas tank, the second port is connected to the first air inlet, a first control valve is provided in the second port, and the third port is connected to the second air inlet and a second control valve is provided in the third port.

7. A novel high-protection-level outdoor power distribution cabinet according to claim 6, characterized in that, The first tank has a first exhaust port at its first end, and the second tank has a second exhaust port at its first end. The first gas distribution module also has a fourth port and a fifth port. The fourth port is connected to the first exhaust port and a third control valve is provided inside the fourth port. The fifth port is connected to the second exhaust port and a fourth control valve is provided inside the fifth port.

8. A novel high-protection-level outdoor power distribution cabinet according to claim 7, characterized in that, The second tank is provided with a first air outlet at its second end, and the second tank is provided with a second air outlet at its second end; The adsorption dryer further includes a second gas distribution module, which connects the second end of the first tank and the second end of the second tank. The second gas distribution module has a sixth port, a seventh port, and an eighth port, wherein: The sixth port is connected to the first air outlet, the seventh port is connected to the second air outlet, the sixth port and the seventh port are connected through a transfer pipe, and a fifth control valve is provided on the transfer pipe; The eighth port is controllably connected to the first air outlet and the second air outlet, and is also connected to the airflow nozzle. A sixth control valve is provided inside the eighth port.

9. A novel high-protection-level outdoor power distribution cabinet according to claim 8, characterized in that, The second gas distribution module further includes a seventh control valve and an eighth control valve. The seventh control valve is disposed on the pipeline connecting the eighth port and the first gas outlet, and the eighth control valve is disposed on the pipeline connecting the first gas outlet.

10. A novel high-protection-level outdoor power distribution cabinet according to any one of claims 1-5 and 7-9, characterized in that, The gas tank is equipped with a pressure gauge.

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