10kv outdoor moisture-proof ring main unit

Abstract

The utility model relates to ring main unit technical field, and disclose a 10kV outdoor moistureproof ring main unit, including the cabinet and the cabinet door, the cabinet is one side opening, the cabinet door rotationally connected in cabinet opening place, the cabinet both sides inner wall all are fixedly connected with PTC heater, the cabinet both sides inner wall all are fixedly connected with refrigeration dehumidification piece, install the cabinet door with the refrigeration dehumidification piece and PTC heater cooperation use's temperature and humidity sensor, the cabinet adopts double -deck stainless steel plate layer structure. The utility model through refrigeration dehumidification piece, PTC heater and temperature and humidity sensor's linkage, accurate maintenance in the cabinet suitable temperature and humidity, avoid dewing phenomenon, reduce the electrical equipment short circuit, insulation ageing etc. from the root cause of the failure that the moisture leads to, the stability and reliability of equipment operation are improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of ring main unit technology, and more specifically to a 10kV outdoor moisture-proof ring main unit. Background Technology

[0002] As a key piece of equipment in power distribution systems, 10kV ring main units are widely used in urban power distribution networks, industrial parks, residential communities and other scenarios. They play an important role in power distribution, line protection and fault isolation. Outdoor ring main units, in particular, are directly exposed to the natural environment and must withstand multiple challenges such as rain, high humidity, temperature changes and atmospheric corrosion. Their operational stability and service life are directly related to the safety and reliability of power supply.

[0003] A search revealed Chinese patent CN220857424U, which discloses a 10kV outdoor moisture-proof ring main unit. This device has good moisture-proof performance and can ensure smooth air circulation inside the ring main unit, ensuring efficient heat dissipation inside the unit. However, in environments with large temperature differences between day and night or high humidity, temperature differences can easily form between the inside and outside of the unit, causing moisture in the air to condense into dew inside the unit, leading to problems such as decreased insulation performance of electrical components and corrosion of metal parts. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a 10kV outdoor moisture-proof ring main unit to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a kV outdoor moisture-proof ring network cabinet, including a cabinet body and a cabinet door. The cabinet body has an opening on one side, and the cabinet door is rotatably connected to the opening of the cabinet body. PTC heaters are fixedly connected to the inner walls on both sides of the cabinet body, and cooling and dehumidifying plates are fixedly connected to the inner walls on both sides of the cabinet body. A temperature and humidity sensor that works in conjunction with the cooling and dehumidifying plates and the PTC heater is installed on the cabinet door. The cabinet body adopts a double-layer stainless steel plate structure.

[0006] As a further embodiment of this utility model, the top wall of the cabinet is provided with multiple air inlets arranged in a ring shape, and electric fans are fixedly connected to the top inner wall of the cabinet and located below the multiple air inlets. Multiple exhaust vents are provided on both side walls of the cabinet.

[0007] As a further embodiment of this utility model, the two outer walls of the cabinet, located outside the exhaust vents, are detachably connected to side baffles by bolts. The side baffles have through holes that cooperate with the exhaust vents. The upper surface of the side baffles has multiple vertically downward sliding grooves that communicate with the through holes. Each of the multiple sliding grooves has a sliding frame that is slidably connected to it. Each of the sliding frames has a groove on both sides, and a waterproof and breathable membrane is adhered to each of the two grooves.

[0008] As a further embodiment of this utility model, the multi-layer structure of the cabinet consists of an outermost outer panel, an innermost inner panel, and a sandwich layer formed between the two, wherein the sandwich layer is filled with polyurethane foam insulation material.

[0009] As a further embodiment of this utility model, both outer walls of the cabinet are fixedly connected with downwardly inclined baffles located above the ventilation holes, and the distance between the lower edge of the baffle and the outer wall of the cabinet is greater than the thickness of the side baffle.

[0010] As a further embodiment of this utility model, a rain shelter is fixedly connected to the top outer wall of the cabinet. The rain shelter is convex in the middle and sloping downward along the sides.

[0011] As a further improvement of this utility model, all metal support surfaces of the cabinet are coated with a nano-ceramic anti-corrosion coating.

[0012] As a further embodiment of this utility model, the contact surface between the cabinet door and the cabinet body is provided with a compressible sealing strip.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model uses the linkage of a cooling dehumidifier, a PTC heater, and a temperature and humidity sensor to accurately maintain a suitable temperature and humidity inside the cabinet, avoid condensation, reduce electrical equipment short circuits and insulation aging caused by humidity from the root, and significantly improve the stability and reliability of equipment operation.

[0015] 2. The present invention, through the design of detachable side baffles and sliding frames, makes it easier to clean or replace the waterproof and breathable membrane, reducing the complexity of maintenance operations.

[0016] 3. The cabinet of this utility model adopts a structure of double-layer stainless steel plate sandwiched with polyurethane foam insulation material, which, together with the cabinet door sealing strip, forms multiple physical barriers that can effectively block the intrusion of external moisture and rainwater. At the same time, the nano-ceramic anti-corrosion coating on the surface of the metal frame can resist the outdoor corrosive environment and reduce the risk of component corrosion. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0019] Figure 3 This is an enlarged structural schematic diagram of the side baffle of this utility model.

[0020] Figure 4This is a schematic diagram of the top structure of the cabinet of this utility model.

[0021] Figure 5 This is a schematic diagram of the cabinet interlayer structure of this utility model.

[0022] The attached diagram is labeled as follows: 1. Cabinet body; 101. Outer panel; 102. Inner panel; 103. Mezzanine; 2. Cabinet door; 3. Temperature and humidity sensor; 4. Rain cover; 5. Vent; 6. PTC heater; 7. Cooling and dehumidifying plate; 8. Side panel; 9. Shelter; 10. Through hole; 11. Slide rail; 12. Slide frame; 13. Embedded groove; 14. Waterproof and breathable membrane; 15. Electric fan; 16. Air inlet. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1-5 This utility model provides a 10kV outdoor moisture-proof ring main unit, including a cabinet body 1 and a cabinet door 2. The cabinet body 1 has an opening on one side, and the cabinet door 2 is rotatably connected to the opening of the cabinet body 1. PTC heaters 6 are fixedly connected to the inner walls on both sides of the cabinet body 1 by bolts. Cooling and dehumidifying plates 7 are fixedly connected to the inner walls on both sides of the cabinet body 1 by bolts. A temperature and humidity sensor 3 (model: AHT20 temperature and humidity sensor) is installed on the cabinet door 2 to work with the cooling and dehumidifying plate 7 (model: TEC1-19908 dehumidifier refrigeration plate) and the PTC heater 6 (model: MZFR-D2018). The cabinet body 1 is composed of a double-layer stainless steel plate structure.

[0025] When the humidity or temperature value displayed by the humidity sensor 3 exceeds the set threshold, the cooling dehumidifier 7 is activated. Through the cooling effect, the water vapor in the air, together with the electric fan 15, is expelled from the cabinet.

[0026] If the internal temperature of cabinet 1 is too low, the PTC heater 6 will be activated to raise the internal temperature of cabinet 1 by heating, thereby reducing the relative humidity of the air and preventing condensation.

[0027] Furthermore, all metal support surfaces of cabinet 1 are coated with a nano-ceramic anti-corrosion coating, and the contact surface between cabinet door 2 and cabinet 1 is provided with a compressible sealing strip.

[0028] By linking the cooling dehumidifier 7, the PTC heater 6, and the temperature and humidity sensor 3, the appropriate temperature and humidity inside the cabinet are precisely maintained, avoiding condensation. This reduces electrical equipment short circuits and insulation aging caused by humidity, significantly improving the stability and reliability of equipment operation.

[0029] In this utility model, the top wall of the cabinet 1 is provided with a plurality of annular air inlets 16, and electric fans 15 are fixedly connected to the top inner wall of the cabinet 1 and below the plurality of air inlets 16 by bolts. The two side walls of the cabinet 1 are provided with a plurality of vertically arranged exhaust vents 5.

[0030] Furthermore, both sides of the outer wall of the cabinet 1, located outside the exhaust vent 5, are detachably connected to side baffles 8 by bolts. The side baffles 8 have through holes 10 that cooperate with the exhaust vent 5. The upper surface of the side baffles 8 has multiple vertically downward sliding grooves 11 that communicate with the through holes 10. Each of the multiple sliding grooves 11 is slidably connected to a sliding frame 12. Both sides of the sliding frame 12 have recessed grooves 13, and a waterproof and breathable membrane 14 is adhered to each of the two recessed grooves 13.

[0031] When in use, first pull out the two sliding frames 12 and attach the waterproof and breathable membrane 14 to both sides of the sliding frame 12. Then, reinsert the sliding frame 12 into the sliding groove 11. Then, install the side baffle 8 on both sides of the cabinet 1 and align the through hole 10 with the exhaust hole 5.

[0032] The design of the detachable side baffle 8 and sliding frame 12 makes it easier to clean or replace the waterproof and breathable membrane 14, reducing the complexity of maintenance operations.

[0033] In this utility model, the multi-layer structure of the cabinet 1 consists of the outermost outer layer 101, the innermost inner layer 102, and the interlayer 103 formed between the two, with polyurethane foam insulation material filling the interlayer 103.

[0034] The polyurethane foam interlayer 103 between the outer layer 101 and the inner layer 102 forms a thermal insulation barrier, and the compressible sealing strip between the cabinet door 2 and the cabinet body 1 forms an airtight layer after being attached, blocking the path of external moisture intrusion.

[0035] Cabinet 1 adopts a structure with double-layer stainless steel plates sandwiched with polyurethane foam insulation material. Together with the sealing strip of cabinet door 2, it forms multiple physical barriers that can effectively block the intrusion of external moisture and rainwater. At the same time, the nano-ceramic anti-corrosion coating on the surface of the metal frame can resist the outdoor corrosive environment and reduce the risk of component corrosion.

[0036] In this utility model, both sides of the outer wall of the cabinet 1, above the exhaust vent 5, are fixedly connected with downwardly inclined baffles 9 by bolts. The distance between the lower edge of the baffle 9 and the outer wall of the cabinet 1 is greater than the thickness of the side baffle 8.

[0037] Furthermore, a rain shelter 4 is bolted to the top outer wall of the cabinet 1. The rain shelter 4 is raised in the middle and sloping downward along the sides.

[0038] The use of this utility model involves the following steps:

[0039] S1: When using, first pull out the two sliding frames 12 and attach the waterproof and breathable membrane 14 to both sides of the sliding frame 12. Then, reinsert the sliding frame 12 into the sliding groove 11. Then, install the side baffle 8 on both sides of the cabinet 1 and align the through hole 10 with the exhaust hole 5.

[0040] S2: When the humidity or temperature value displayed by the humidity sensor 3 is higher than the set threshold, the cooling dehumidifier 7 is activated. The cooling action causes the water vapor in the air to be expelled from the cabinet by the electric fan 15.

[0041] S3: If the internal temperature of cabinet 1 is too low, start the PTC heater 6 to raise the internal temperature of cabinet 1 by heating, thereby reducing the relative humidity of the air and preventing condensation;

[0042] S4: The polyurethane foam interlayer 103 between the outer layer 101 and the inner layer 102 forms a thermal insulation barrier, and the compressible sealing strip between the cabinet door 2 and the cabinet body 1 forms an airtight layer after being attached, blocking the path of external moisture intrusion.

[0043] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0044] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0045] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A 10kV outdoor moisture-proof ring main unit, comprising a cabinet body (1) and a cabinet door (2), wherein the cabinet body (1) has an opening on one side, and the cabinet door (2) is rotatably connected to the opening of the cabinet body (1), characterized in that: PTC heaters (6) are fixedly connected to the inner walls on both sides of the cabinet (1), and cooling dehumidifying plates (7) are fixedly connected to the inner walls on both sides of the cabinet (1). A temperature and humidity sensor (3) is installed on the cabinet door (2) to work with the cooling dehumidifying plates (7) and the PTC heaters (6). The cabinet (1) is composed of a double-layer stainless steel plate structure.

2. A 10kV outdoor moisture-proof ring main unit according to claim 1, characterized in that: The cabinet (1) has multiple air inlets (16) arranged in a ring on its top wall. An electric fan (15) is fixedly connected to the top inner wall of the cabinet (1) and below the multiple air inlets (16). Multiple exhaust holes (5) are arranged vertically on both side walls of the cabinet (1).

3. A 10kV outdoor moisture-proof ring main unit according to claim 2, characterized in that: The cabinet (1) has side baffles (8) that are detachably connected to the outer walls of both sides and outside the exhaust vent (5) by bolts. The side baffles (8) have through holes (10) that cooperate with the exhaust vent (5). The upper surface of the side baffles (8) has multiple vertically downward sliding grooves (11) that are connected to the through holes (10). Each of the multiple sliding grooves (11) has a sliding frame (12) that is slidably connected to it. Each of the sliding frames (12) has a groove (13) on both sides. Each of the two grooves (13) has a waterproof and breathable membrane (14) bonded to it.

4. A 10kV outdoor moisture-proof ring main unit according to claim 1, characterized in that: The cabinet (1) has a multi-layer structure consisting of an outermost outer panel (101), an innermost inner panel (102), and a sandwich layer (103) formed between them. The sandwich layer (103) is filled with polyurethane foam insulation material.

5. A 10kV outdoor moisture-proof ring main unit according to claim 1, characterized in that: Both sides of the cabinet (1) are fixedly connected to downward inclined baffles (9) located above the exhaust vents (5). The distance between the lower edge of the baffles (9) and the outer wall of the cabinet (1) is greater than the thickness of the side baffles (8).

6. A 10kV outdoor moisture-proof ring main unit according to claim 5, characterized in that: A rain shelter (4) is fixedly connected to the top outer wall of the cabinet (1). The rain shelter (4) is raised in the middle and sloping downward along the sides.

7. A 10kV outdoor moisture-proof ring main unit according to claim 1, characterized in that: All metal brackets of the cabinet (1) are coated with a nano-ceramic anti-corrosion coating.

8. A 10kV outdoor moisture-proof ring main unit according to claim 1, characterized in that: The cabinet door (2) is provided with a compressible sealing strip on the contact surface with the cabinet body (1).

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