External high-voltage switch cabinet dehumidification device

Abstract

The utility model discloses an external high-voltage switch cabinet dehumidification device which comprises a dehumidification device cabinet box, an air heater is arranged in the cabinet box, an air outlet of the air heater is connected with a drying dust removal chamber, the drying dust removal chamber is communicated with an air blowing opening formed in the cabinet box, and a filter screen is arranged in the air blowing opening. The outer end of the air blowing opening is connected to an air inlet in a switch cabinet matching panel through a ventilation hose, a drying agent is placed in the drying dust removal chamber, a ventilation heat dissipation opening is formed in the position, close to the cabinet box, of the tail of the air heater, and an air suction opening formed in the cabinet box is connected to an air outlet in the switch cabinet matching panel through a ventilation hose. The cabinet box is provided with an exhaust outlet close to the exhaust inlet. An air inlet and an air outlet are formed in a panel of the switch cabinet, shielding nets are arranged in the air inlet and the air outlet, and the air inlet and the air outlet are connected with the ventilation hose through threads. The external dehumidification device for the high-voltage switch cabinet adopts an external design, is plug-and-play, does not occupy the space in the switch cabinet, can promote the hot air circulation in the switch cabinet through the high-power air heater, and improves the dehumidification efficiency in the switch cabinet.

Description

Technical Field

[0001] This utility model relates to the fields of water conservancy engineering and electrical equipment, and in particular to an external high-voltage switchgear dehumidification device. Background Technology

[0002] Due to their unique characteristics, pumping stations, sluice gates, and substations in the water conservancy industry are often located in water-adjacent areas, where the humidity is generally higher than in normal environments. Switchgear cabinets house electrical equipment and electronic components, and high humidity levels can easily lead to condensation and other problems. These issues accelerate oxidation of circuit breaker contacts, cables, and busbar joints, resulting in increased contact resistance and consequently, a higher probability of thermal failures. Furthermore, these problems exacerbate the aging of insulation materials within the cabinet, and in severe cases, can cause insulation breakdown, leading to safety accidents.

[0003] Taking heaters as an example, they are typically installed in the corners of the cabinet, usually one unit, with a power of about 150W, using PTC heating. For larger KYN61-40.5 switchgear, the dehumidification effect of heating inside the cabinet is negligible, and the heaters lack fans, resulting in poor hot air circulation. Conventional cabinet dehumidification devices suffer from problems such as requiring power outages for installation and maintenance, and the inability to directly observe the device's operation. In actual operation, it has also been found that the dehumidification device's condensate pipe has become detached inside the cabinet, a dangerous situation. If the humidity inside the cabinet is high, condensate will drip directly inside, accumulating and flowing to the three-way cable ends, posing an even greater danger. In summary, both methods suffer from low power, difficulty in cabinet installation and maintenance, and poor actual dehumidification effect. High-voltage indoor dehumidification mainly involves configuring high-power dehumidifiers and air conditioners, which suffers from high energy consumption and uneven dehumidification effects inside and outside the cabinet. Therefore, based on the actual operation of substations in the water conservancy industry, there is still room for improvement in dehumidification methods for high-voltage switchgear. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides an external high-voltage switchgear dehumidification device. The dehumidification device adopts a high-power hot air blower, which improves the dehumidification power, enhances hot air circulation, and improves the dehumidification effect. The dehumidification device is external and does not occupy the space inside the cabinet. When the switchgear is under maintenance, the dehumidification device can be removed, effectively ensuring the maintenance space near the cabinet door. A dustproof box with thin sponge and strong magnet is added to the switchgear panel to improve the dustproof performance of the openings.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An external high-voltage switchgear dehumidification device includes a switchgear panel and a dehumidification device. The switchgear panel has an air inlet and an air outlet. The air inlet and outlet are equipped with shielding meshes, and the air inlet and outlet are equipped with removable dustproof boxes for covering. The dehumidification device includes a cabinet and a drying and dust removal chamber inside it, as well as a hot air blower and a battery pack. The battery pack is electrically connected to the hot air blower. The air outlet of the hot air blower is connected to the drying and dust removal chamber. The drying and dust removal chamber is connected to an air outlet on the cabinet. The air outlet is equipped with a filter screen. The outer end of the air outlet is connected to the air inlet on the switchgear panel via a ventilation hose. A desiccant is placed in the drying and dust removal chamber. The tail of the hot air blower is connected to a ventilation and heat dissipation vent on the cabinet. The air intake on the cabinet is connected to the air outlet on the switchgear panel via a ventilation hose. An exhaust vent is located on the cabinet near the air intake.

[0007] A further improvement is to place the air inlet on the bottom of the panel and the air outlet on the top. This facilitates hot air circulation and improves dehumidification efficiency.

[0008] A further improvement involves attaching a ring of strong magnets to the open wall of the dustproof box, with a thin layer of sponge adhered to the outer wall of the magnets. When no dehumidifier is connected, the dustproof box is magnetically attached to the air inlet and outlet of the panel, improving the protection level of the switchgear. When a dehumidifier needs to be connected, the dustproof box can be moved elsewhere for attachment. The strong magnets adhere the dustproof box to the panel, and the sponge layer is compressed and deformed against the uneven paint surface of the panel, improving adhesion and thus enhancing the dustproof effect.

[0009] A further improvement is to install opposing L-shaped limit buckles on the left and right sides below the air inlet and outlet of the switch cabinet panel. These are used to limit the position of the dust cover and prevent it from changing position if accidentally touched.

[0010] A further improvement involves installing a temperature and time control panel on the outer wall of the dehumidification unit's cabinet, which is connected to a temperature sensor located inside the drying and dust removal chamber. This monitors the temperature of the hot air delivered to the switch cabinet through the drying and dust removal chamber.

[0011] A further improvement is to add a consumable replacement door to the cabinet in the drying and dust removal chamber. This door can be opened for easy replacement of the desiccant and filter.

[0012] A further improvement is that the front and rear side walls of the cabinet are equipped with hose storage clips. These are used to secure the ventilation hoses when not in use.

[0013] A further improvement is that the cabinet is equipped with a battery pack, which is electrically connected to the hot air blower to provide power to the blower. For long-term use in a fixed location, it can be connected to mains power via a wired connection. For temporary emergency use when a connection to mains power is not possible, it can serve as a temporary power source.

[0014] A further improvement is that the cabinet is equipped with locking rollers at the four corners of its bottom and a pull rod at the top. This facilitates the overall movement of the dehumidification device and effectively ensures maintenance space near the cabinet door.

[0015] A further improvement is that the switch cabinet's matching panel model is KYN61-40.5, the hot air blower model is 2500W 033244, the temperature sensor model is SD123 or RS485, and the battery pack model is MPX15.

[0016] Beneficial effects:

[0017] 1. This dehumidification device is connected to the outside of the high-voltage switchgear and does not occupy the space inside the cabinet; when the switchgear is under maintenance, the dehumidification device can be removed, effectively ensuring the maintenance space near the cabinet door.

[0018] Second, the overall modular design facilitates maintenance and replacement. If the hot air blower, battery, or other components malfunction, they can be directly replaced by simply connecting the plugs.

[0019] Third, this solution uses a dustproof box to absorb and block the air inlet and outlet holes, thereby improving the dustproof performance of the opening positions.

[0020] IV. The dehumidification device uses a high-power hot air blower, which increases dehumidification power, enhances hot air circulation, and ensures good dehumidification effect. Filters and desiccants are installed in the drying and dust removal chamber, making the hot air entering the KYN61-40.5 switchgear cleaner and drier.

[0021] 5. This device can be used both wired and wirelessly. It can be powered by either mains power or a battery pack. When wired to mains power, it can be used in a fixed location for a long time. Alternatively, it can be used temporarily in an emergency by using the battery pack. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 A schematic diagram of the front panel of the switch cabinet of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the dehumidification device of this utility model;

[0025] The components include: 1. Switch cabinet matching panel, 11. Air inlet, 12. Air outlet, 13. Shielding mesh, 14. Dustproof box, 141. Strong magnet, 142. Sponge layer, 15. L-shaped limit buckle, 2. Dehumidification device, 20. Pull rod, 21. Cabinet, 211. Air blower, 212. Heat dissipation vent, 213. Air intake, 214. Air exhaust, 215. Consumable replacement door, 22. Hot air blower, 23. Drying and dust removal chamber, 24. Ventilation hose, 25. Temperature and time control panel, 26. Temperature sensor, 27. Hose storage buckle, 28. Battery pack, 29. Locking roller. Detailed Implementation

[0026] like Figures 1 to 3 As shown, this utility model includes a switch cabinet matching panel 1 and an external dehumidifier 2. The KYN61-40.5 switch cabinet matching panel 1 has two round holes, one above the other, with a metal shielding mesh 13 installed inside the holes for isolation and protection. The outer wall of the shielding mesh has internal threads. Based on the characteristics of hot air circulation, the lower hole is the air inlet 11, and the upper hole is the air outlet 12, which helps to improve dehumidification efficiency. The dehumidifier 2 includes a cabinet 21 and a 2500W dehumidifier installed inside. The 033244 model hot air blower 22 has a drying and dust removal chamber 23 inside the cabinet. The air outlet of the hot air blower 22 is connected to the drying and dust removal chamber 23, which is connected to the air outlet 211 on the cabinet. The air outlet 211 is equipped with a filter screen. The outer end of the air outlet 211 is connected to the air inlet 11 on the switch cabinet panel via a ventilation hose 24. The drying and dust removal chamber 23 contains a desiccant. The tail of the hot air blower 22 is connected to the ventilation and heat dissipation vent 212 on the cabinet. The air intake vent 213 on the cabinet 21 is connected to the air outlet 12 on the switch cabinet panel via a ventilation hose 24. The exhaust vent 214 is located on the cabinet near the air intake vent. During operation, the air exhausted from the switch cabinet 1 is not on the front of the panel, which is convenient for operators to perform other operations. In addition, by changing the path, the air can be exhausted over a longer distance. People do not directly touch the air outlet. The cabinet is electrically powered, providing an extra layer of protection.

[0027] To improve the protection level of the openings in the switchgear, a transparent dustproof box 14 is added to the outside of the air inlet 11 and air outlet 12 of the switchgear panel 1. A strong magnet 141 is connected to the open wall of the dustproof box 14, and a thin layer of sponge 142 is adhered to the outer wall of the strong magnet 141. The dustproof box is attracted to the outside of the air inlet 11 and air outlet 12, providing protection. When an external dehumidifier is needed, the dustproof box can be removed and attached to another part of the panel. Due to the painting process of the switchgear panel, the surface is not smooth. The strong magnet causes the high-density sponge to deform according to the unevenness of the panel surface, ensuring a tight fit between the dustproof box and the panel, thereby improving the dustproof effect.

[0028] On the left and right sides below the air inlet 11 and air outlet 12 of the switch cabinet 1 panel, there are L-shaped limit buckles 15 facing each other. They are attached to the panel with adhesive to limit the position of the dust box and prevent the position of the dust box from changing after being accidentally touched.

[0029] A temperature and time control panel 25 is installed on the outer wall of the dehumidification unit 2 cabinet, which is connected to a temperature sensor 26 of model SD123 (or RS485) located in the drying and dust removal chamber for signal transmission. The temperature and time control panel 25 consists of a controller, a display screen, etc., and has functions such as ventilation temperature setting and timed on / off switching. It can display information such as ventilation temperature and start-up time, making it easy to control the humidity of the hot air delivered to the switch cabinet through the drying and dust removal chamber.

[0030] A consumable replacement door 215 is provided on the cabinet 21 in the drying and dust removal chamber, which can be opened to facilitate the replacement of desiccant and filter consumables.

[0031] The cabinet 21 is equipped with hose storage clips 27 on the front and rear side walls. When the ventilation hose is in operation, it is connected to the threaded port in the air inlet and outlet on the switch cabinet panel through the threaded connector; when not in operation, it is stored in the hose storage clips 27 on both sides of the cabinet.

[0032] The cabinet 21 contains an MPX1S battery pack 28, which provides power to the hot air blower. It can be used both wired and wirelessly. When the dehumidifier is used in a fixed position for a long time, it can be connected to the mains power. When the mains power is unavailable, the battery pack can be activated for temporary emergency use.

[0033] This device is an externally designed unit. The cabinet 21 has locking rollers 29 at the four corners of its bottom and a pull rod 20 at the top. The locking rollers facilitate fixing the dehumidifier when it is in operation, and the pull rod allows the entire dehumidifier to be moved when not locked.

[0034] In use, the external high-voltage switchgear dehumidification device of this utility model is moved and positioned in front of the switchgear panel 1 using the pull rod 20. The locking roller 29 is then locked, and the dustproof box 14 is moved from the air inlet 11 and air outlet 12 to another location. The dehumidification device 2 is connected to the air inlet 11 and air outlet 12 via a ventilation hose 24. After the dehumidification device 2 is started, the hot air blower 22 begins operation. Hot air enters the drying and dust removal chamber 23, where impurities and moisture are removed by a filter and desiccant. The dry and clean hot air enters the air inlet 11 on the high-voltage switchgear panel 1 from the air outlet 211 through the ventilation hose 24. The displaced gas enters the air intake 213 on the dehumidification device 2 from the air outlet 12 on the high-voltage switchgear panel 1 through the ventilation hose 24, and is then discharged from the side exhaust 214. On-site personnel adjust the temperature and time based on the values ​​transmitted from the temperature sensor 26 inside the drying and dust removal chamber 23 to the temperature and time control panel 25. When there is no mains power, the device is powered by the battery pack 28. When dehumidification is no longer needed, the ventilation hose 24 can be stored in the hose storage clip 27 after the device is disassembled.

[0035] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An external high-voltage switchgear dehumidification device, characterized in that: The switchgear includes a control panel (1) and a dehumidifier (2). The control panel (1) has an air inlet (11) and an air outlet (12). The air inlet and outlet are equipped with a shielding mesh (13), and the air inlet and outlet are equipped with a removable dustproof box (14) for covering. The dehumidifier (2) includes a cabinet (21) and a drying and dust removal chamber (23) inside it, and a hot air blower (22) installed inside. The air outlet of the hot air blower (22) is connected to the drying and dust removal chamber (23), and the drying and dust removal chamber (23) is connected to the control panel (12) on the control panel. Air blower (211) is provided with a filter screen. The outer end of the air blower (211) is connected to the air inlet (11) on the switch cabinet panel by a ventilation hose (24). A desiccant is placed in the drying and dust removal chamber (23). The tail of the hot air blower (22) is connected to the ventilation and heat dissipation vent (212) on the cabinet. The air intake (213) on the cabinet (21) is connected to the air outlet (12) on the switch cabinet panel by a ventilation hose (24). An exhaust vent (214) is opened on the cabinet near the air intake.

2. The external high-voltage switchgear dehumidification device according to claim 1, characterized in that: The air inlet (11) is located on the lower side of the panel, and the air outlet (12) is located on the upper side of the panel.

3. The external high-voltage switchgear dehumidification device according to claim 1, characterized in that: A ring of strong magnets (141) is connected to the open wall of the dust box (14), and a ring of thin sponge layer (142) is adhered to the outer wall of the strong magnets (141).

4. The external high-voltage switchgear dehumidification device according to claim 3, characterized in that: On the left and right sides below the air inlet (11) and air outlet (12) of the switch cabinet panel (1), there are L-shaped limit buckles (15) facing each other.

5. The external high-voltage switchgear dehumidification device according to claim 3, characterized in that: A temperature and time control panel (25) is installed on the outer wall of the cabinet of the dehumidification device (2), which is connected to a temperature sensor (26) located in the drying and dust removal chamber for signal transmission.

6. The external high-voltage switchgear dehumidification device according to claim 1, characterized in that: A consumable replacement door (215) is provided on the cabinet (21) in the location of the drying and dust removal chamber.

7. The external high-voltage switchgear dehumidification device according to claim 1, characterized in that: The cabinet (21) is provided with flexible hose storage buckles (27) on the front and rear side walls.

8. The external high-voltage switchgear dehumidification device according to claim 1, characterized in that: The cabinet (21) is equipped with a battery pack (28), which is electrically connected to the hot air blower to provide power to the hot air blower.

9. The external high-voltage switchgear dehumidification device according to claim 1, characterized in that... The cabinet (21) has locking rollers (29) at the four corners of its bottom and a pull rod (20) at the top.

10. An external high-voltage switchgear dehumidification device according to claim 5, characterized in that: The switch cabinet panel (1) is model KYN61-40.5, the hot air blower (22) is model 2500W 033244, and the temperature sensor (26) is model SD123 or RS485.

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