Anti-condensation moisture-proof device for double-split dry-type transformer

Abstract

The utility model relates to the technical field of dry-type transformers, in particular to a moisture-proof device for an anti-condensation double-split dry-type transformer, which comprises a drying agent placing assembly arranged in a heat dissipation channel and a humidity monitoring assembly connected with the drying agent placing assembly, the desiccant placing assembly comprises a desiccant box and a plurality of partition plates used for placing desiccant, the desiccant box is in a long strip shape and is in sliding connection with the heat dissipation channel, an air inlet and an air outlet are formed in the two sides of the desiccant box respectively, filter screens are installed at the air inlet and the air outlet, a plurality of insertion openings are formed in the upper side of the desiccant box, and the partition plates are in a grid shape. The drying agent box is slidably mounted in the drying agent box through the socket; the humidity monitoring assembly comprises a humidity sensor, a controller and a communication module, the humidity sensor is installed at the air outlet of the drying agent box, the controller is electrically connected with the humidity sensor, and the communication module is electrically connected with the controller; intelligent monitoring of the drying agent state is realized, and the insulation safety of the transformer is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of dry-type transformers, and in particular to a moisture-proof device for a double-split dry-type transformer that resists condensation. Background Technology

[0002] A double-split dry-type transformer is a special type of transformer that splits the low-voltage winding into two windings of equal capacity and identical parameters. These windings can supply power independently or operate together, effectively limiting short-circuit current and improving the reliability and flexibility of the power supply system. They are mainly used in power distribution systems of large industrial enterprises, marine power systems, and urban rail transit. Because dry-type transformers do not use insulating oil, their insulation materials are susceptible to moisture absorption in humid environments, which can reduce insulation performance and even cause electrical faults. Therefore, moisture protection is necessary. Compared to ordinary dry-type transformers, double-split dry-type transformers have more complex structures and split windings, resulting in higher moisture protection requirements.

[0003] Existing moisture-proof devices for double-split dry-type transformers mostly employ a structure that places desiccant in the heat dissipation channel. However, once the desiccant reaches adsorption saturation after long-term operation, its moisture-proof performance will decline sharply if there is a lack of timely monitoring and replacement mechanisms, making it difficult to continuously ensure the insulation safety of the transformer in a humid environment. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a moisture-proof device for a dual-split dry-type transformer that features intelligent monitoring, high-efficiency moisture prevention, and convenient maintenance.

[0005] This utility model discloses a moisture-proof device for a dual-split dry-type transformer with anti-condensation properties. It includes a desiccant placement assembly installed within a heat dissipation channel, and a humidity monitoring assembly connected to the desiccant placement assembly. The desiccant placement assembly includes a desiccant box and several partitions for placing the desiccant. The desiccant box is elongated and slidably connected to the heat dissipation channel. Air inlets and outlets are respectively provided on both sides of the desiccant box, and filters are installed at both the air inlets and outlets. Several slots are provided on the upper side of the desiccant box, and the partitions are mesh-shaped and slidably installed inside the desiccant box through the slots. The humidity monitoring assembly includes a humidity sensor, a controller, and a communication module. The humidity sensor is installed at the air outlet of the desiccant box, the controller is electrically connected to the humidity sensor, and the communication module is electrically connected to the controller.

[0006] As a preferred embodiment of this utility model, a plurality of first rubber rings are wrapped around the outside of the desiccant box, the plurality of first rubber rings are distributed at intervals along the length direction of the desiccant box, and the plurality of first rubber rings are alternately arranged with a plurality of insertion ports.

[0007] As a preferred embodiment of this utility model, a limiting plate is installed around the inner wall of the heat dissipation channel, and a second rubber ring is provided at one end of the desiccant box near the limiting plate.

[0008] As a preferred embodiment of this utility model, the heat dissipation channel has an edge on its outer side, and a first slot is provided on the edge. The desiccant box has a buckle at the end away from the limiting plate, and the buckle cooperates with the first slot.

[0009] As a preferred embodiment of this utility model, the side wall of the desiccant box is provided with a sandwich layer, a heating wire is provided inside the sandwich layer, the heating wire is electrically connected to the controller, and a heat insulation layer is provided on the outside of the desiccant box.

[0010] As a preferred embodiment of this utility model, the bottom of the desiccant box is provided with conductive contacts through an elastic element, and a conductive interface is provided at a corresponding position in the heat dissipation channel. The conductive contacts are electrically connected to the heating wire, humidity sensor, controller and communication module, and the conductive interface is connected to the power supply. When the desiccant box is fully pushed in, the conductive contacts contact the conductive interface.

[0011] As a preferred embodiment of this utility model, the elastic element includes a support frame, which is installed inside the desiccant box. A lifting plate is movably installed inside the support frame. The lifting plate is elastically connected to the support frame by a spring. The lifting plate is provided with a locking rod and a connecting rod extending outside the desiccant box. The height of the locking rod is greater than that of the connecting rod. A second locking groove that cooperates with the locking rod is provided in the heat dissipation channel. A conductive contact is installed on the connecting rod.

[0012] As a preferred embodiment of this utility model, both the desiccant box and the partition are equipped with handles.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. By installing a humidity sensor at the air outlet of the desiccant box, the humidity of the air after dehumidification by the desiccant is monitored in real time. The humidity sensor is connected to the controller and communication module. Once the humidity exceeds the set threshold, it indicates that the desiccant has reached adsorption saturation. The controller can send early warning information to the maintenance personnel in a timely manner through the communication module, realizing intelligent monitoring of the desiccant status, changing the shortcomings of traditional moisture-proof devices that lack monitoring mechanisms, and ensuring the insulation safety of the transformer.

[0015] 2. The desiccant box is slidably connected to the heat dissipation channel, and the partition is slidably installed inside the desiccant box through the slot on the desiccant box. Both the desiccant box and the partition are equipped with handles for easy disassembly and installation of the desiccant box and the internal partition, facilitating desiccant replacement and improving maintenance efficiency. In addition, the desiccant box and the heat dissipation channel adopt a matching structure of buckles, slots, and sealing rings to ensure a stable connection while facilitating overall disassembly and maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the installation cross-sectional structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the elastic element structure of this utility model;

[0020] The attached diagram shows the following markings: 1. Heat dissipation channel; 11. Limiting plate; 12. Edge; 13. First slot; 14. Conductive interface; 15. Second slot; 2. Desiccant placement assembly; 21. Desiccant box; 22. Partition; 23. Filter screen; 24. Inlet; 25. First rubber ring; 26. Second rubber ring; 27. Buckle; 28. Interlayer; 29. ​​Heating wire; 210. Insulation layer; 3. Humidity monitoring assembly; 31. Humidity sensor; 4. Elastic element; 41. Conductive contact; 42. Support frame; 43. Lifting plate; 44. Spring; 45. Locking rod; 46. Connecting rod; 5. Handle. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Reference Figure 1 , Figure 2This embodiment provides a moisture-proof device for a dual-split dry-type transformer with anti-condensation properties, including a desiccant placement assembly 2 installed in a heat dissipation channel 1, and a humidity monitoring assembly 3 connected to the desiccant placement assembly 2. The desiccant placement assembly 2 includes a desiccant box 21 and several partitions 22 for placing the desiccant. The desiccant box 21 is elongated and its size is adapted to the heat dissipation channel 1. It can be easily and conveniently installed and disassembled within the heat dissipation channel 1 using sliding rail, dovetail groove, or other connection structures, facilitating subsequent maintenance. Air inlets and outlets are respectively provided on both sides of the desiccant box 21, and filters 23 are installed at both the inlets and outlets. The filters 23 have good air permeability and can effectively prevent dust, impurities, and other foreign objects from entering the interior of the desiccant box 21, avoiding interference with the performance of the desiccant while ensuring smooth airflow. Several slots 24 are provided on the desiccant box 21, through which the mesh-like partitions 22 for placing the desiccant are slidably installed inside the desiccant box 21, which can be adjusted according to actual needs. The number and position of the partitions 22 can be adjusted to meet different moisture-proof requirements. The humidity monitoring component 3 includes a humidity sensor 31, a controller, and a communication module. The humidity sensor 31 is installed at the air outlet of the desiccant box 21 to monitor the humidity data of the air flowing out of the desiccant box 21 in real time. The controller is electrically connected to the humidity sensor 31 and is used to analyze and process the humidity data collected by the humidity sensor 31. The communication module is electrically connected to the controller and is responsible for transmitting the information processed by the controller to external devices in a timely and stable manner, such as the computer in the monitoring center or the mobile phone of the staff. Through this intelligent humidity monitoring component 3, the adsorption saturation state of the desiccant can be detected in time, and the staff can be reminded to replace it in time, thereby effectively ensuring the stable operation of the double-split dry-type transformer in various humid environments and improving its insulation safety.

[0024] Reference Figure 2 , Figure 3 A plurality of first rubber rings 25 are arranged around the outside of the desiccant box 21. The plurality of first rubber rings 25 are distributed at intervals along the length of the desiccant box 21, and the plurality of first rubber rings 25 are alternately arranged with a plurality of inlets 24. The first rubber rings 25 are elastic. When the desiccant box 21 is installed in the heat dissipation channel 1, the first rubber rings 25 are in contact with the inner wall of the heat dissipation channel 1, which can effectively prevent the outside humid air from entering through the gap between the desiccant box 21 and the heat dissipation channel 1. The alternating arrangement defines the air flow path in the desiccant box 21, so that each layer of desiccant can fully contact the air, thereby improving the moisture absorption effect.

[0025] A limiting plate 11 is installed around the inner wall of the heat dissipation channel 1, and a second rubber ring 26 is provided at one end of the desiccant box 21 near the limiting plate 11. The limiting plate 11 provides a clear insertion depth limit for the installation of the desiccant box 21, and the second rubber ring 26 further enhances the sealing performance based on the limiting plate 11. At the same time, the elasticity of the second rubber ring 26 can reduce the hard contact between the desiccant box 21 and the limiting plate 11.

[0026] The outer side of the heat dissipation channel 1 is provided with an edge 12, on which a first slot 13 is formed. A buckle 27 is provided at the end of the desiccant box 21 away from the limiting plate 11, and the buckle 27 cooperates with the first slot 13. When the desiccant box 21 needs to be installed, it is pushed in along the sliding connection structure of the heat dissipation channel 1. After it slides into place, the buckle 27 engages with the first slot 13, achieving quick fixation of the desiccant box 21 and simplifying the installation and disassembly process.

[0027] The desiccant box 21 has a sandwich layer 28 on its side wall, and a heating wire 29 is installed inside the sandwich layer 28. The heating wire 29 is electrically connected to the controller. The controller can control the on / off state and power adjustment of the heating wire 29 based on the data fed back by the humidity sensor 31. When the humidity sensor 31 detects that the air humidity is high and the desiccant's adsorption capacity decreases, the controller starts the heating wire 29 to heat it at a set power, moderately heating the desiccant to enhance its activity and restore its moisture absorption capacity. When the preset temperature is reached or the humidity drops to a safe range, the controller automatically adjusts or turns off the heating wire 29 to avoid damage to the desiccant and equipment due to excessive temperature. To prevent heat loss and avoid accidental contact with high-temperature surfaces by external personnel, the desiccant box 21 is wrapped with a heat insulation layer 210. The heat insulation layer 210 is made of multiple layers of low thermal conductivity materials. Through the setting of the heat insulation layer 210, the desiccant box 21 can ensure that the internal desiccant receives sufficient heat to improve its performance during the heating process, while maintaining the external surface within a safe temperature range, ensuring the safety and reliability of equipment operation, and also improving energy utilization efficiency.

[0028] To ensure reliable power transmission, the bottom of the desiccant box 21 is provided with a conductive contact 41 via an elastic element 4. In its natural state, the elastic element 4 is in a slightly compressed state, ensuring that the conductive contact 41 always maintains a certain preload. A conductive interface 14 is provided in the heat dissipation channel 1 at the position corresponding to the conductive contact 41. The conductive contact 41 is electrically connected to the heating wire 29, humidity sensor 31, controller, and communication module, and the conductive interface 14 is connected to the power supply. When the desiccant box 21 is fully pushed into place along the heat dissipation channel 1, the elastic element 4, under its own elasticity, pushes the conductive contact 41 to contact the conductive interface 14, providing a stable power supply and signal transmission channel for the connected components.

[0029] Specifically, such as Figure 4 As shown, the elastic element 4 includes a support frame 42, which is installed inside the desiccant box 21. A lifting plate 43 is movably installed inside the support frame 42, and the lifting plate 43 is elastically connected to the support frame 42 via a spring 44. The lifting plate 43 is provided with a locking rod 45 and a connecting rod 46 extending outside the desiccant box 21. The height of the locking rod 45 is greater than that of the connecting rod 46. A second slot 15 that mates with the locking rod 45 is provided inside the heat dissipation channel 1. A conductive contact 41 is installed on the connecting rod 46. When the desiccant box 21 is pushed into the heat dissipation channel 1, the locking rod 45 first contacts the second slot 15. Under the action of the pushing force, the locking rod 45 drives the lifting plate 43 to move downward against the elastic force of the spring 44. As the desiccant box 21 continues to advance, when the locking lever 45 is fully embedded in the second locking slot 15, the conductive contact 41 on the connecting rod 46 makes tight contact with the conductive interface 14 in the heat dissipation channel 1. At this time, the spring 44 is in a compressed state, providing stable contact pressure for the conductive contact 41 and the conductive interface 14, ensuring reliable power transmission and signal conduction. At the same time, the cooperation between the locking lever 45 and the second locking slot 15 not only plays a positioning role, but also effectively prevents the desiccant box 21 from shifting in the horizontal direction, further enhancing the stability of the conductive connection. When it is necessary to remove the desiccant box 21, pull the desiccant box 21 outward, the locking lever 45 disengages from the second locking slot 15, the elastic force of the spring 44 pushes the lifting plate 43 to reset, and the conductive contact 41 separates from the conductive interface 14. The whole process is convenient to operate and can effectively protect the conductive structure from damage.

[0030] To enable quick pulling, both the desiccant box 21 and the partition 22 are equipped with handles 5. As manual force application points, the desiccant box 21 can be pulled out from the heat dissipation channel 1 and the partition 22 can be pulled out from the desiccant box 21, facilitating maintenance. The handles 5 are connected to the internal structure of the box body and the partition 22 through fasteners to distribute the force and transmit the pulling force to the overall frame, avoiding direct pulling of weak parts that could cause deformation or damage.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A moisture-proof device for anti-condensation double-split dry-type transformer, characterized in that, The device includes a desiccant placement assembly (2) installed in the heat dissipation channel (1) and a humidity monitoring assembly (3) connected to the desiccant placement assembly (2). The desiccant placement assembly (2) includes a desiccant box (21) and several partitions (22) for placing the desiccant. The desiccant box (21) is elongated and slidably connected to the heat dissipation channel (1). Air inlets and outlets are provided on both sides of the desiccant box (21). Filters (23) are installed at both the air inlets and outlets. Several slots (24) are provided on the upper side of the desiccant box (21). The partitions (22) are grid-shaped and slidably installed inside the desiccant box (21) through the slots (24). The humidity monitoring assembly (3) includes a humidity sensor (31), a controller, and a communication module. The humidity sensor (31) is installed at the outlet of the desiccant box (21). The controller is electrically connected to the humidity sensor (31), and the communication module is electrically connected to the controller.

2. The moisture-proof device for anti-condensation double-split dry-type transformer according to claim 1, characterized in that, The desiccant box (21) is surrounded by a plurality of first rubber rings (25), which are distributed at intervals along the length of the desiccant box (21), and the plurality of first rubber rings (25) are alternately arranged with the plurality of the sockets (24).

3. The moisture-proof device for anti-condensation double-split dry-type transformer according to claim 1, characterized in that, The heat dissipation channel (1) is surrounded by a limiting plate (11), and a second rubber ring (26) is provided at one end of the desiccant box (21) near the limiting plate (11).

4. The moisture-proof device for anti-condensation double-split dry-type transformer according to claim 3, characterized in that, The heat dissipation channel (1) has an edge (12) on its outer side, and a first slot (13) is provided on the edge (12). The desiccant box (21) has a buckle (27) at one end away from the limiting plate (11), and the buckle (27) cooperates with the first slot (13).

5. The moisture-proof device for anti-condensation double-split dry-type transformer according to claim 1, characterized in that, The desiccant box (21) has a sandwich layer (28) on its side wall, and a heating wire (29) is provided inside the sandwich layer (28). The heating wire (29) is electrically connected to the controller. A heat insulation layer (210) is provided on the outside of the desiccant box (21).

6. The moisture-proof device for anti-condensation double-split dry-type transformer according to claim 5, characterized in that, The bottom of the desiccant box (21) is provided with a conductive contact (41) through an elastic element (4), and a conductive interface (14) is provided in the corresponding position in the heat dissipation channel (1). The conductive contact (41) is electrically connected to the heating wire (29), the humidity sensor (31), the controller and the communication module, and the conductive interface (14) is connected to the power supply. When the desiccant box (21) is fully pushed in, the conductive contact (41) contacts the conductive interface (14).

7. The moisture-proof device for anti-condensation double-split dry-type transformer according to claim 6, characterized in that, The elastic element (4) includes a support frame (42), which is installed inside the desiccant box (21). A lifting plate (43) is movably installed inside the support frame (42). The lifting plate (43) is elastically connected to the support frame (42) by a spring (44). A locking rod (45) and a connecting rod (46) extending outside the desiccant box (21) are provided on the lifting plate (43). The height of the locking rod (45) is greater than that of the connecting rod (46). A second slot (15) that cooperates with the locking rod (45) is provided in the heat dissipation channel (1). The conductive contact (41) is installed on the connecting rod (46).

8. The moisture-proof device for anti-condensation double-split dry-type transformer according to claim 1, characterized in that, Both the desiccant box (21) and the partition (22) are equipped with handles (5).

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