Dehumidification device for ring main unit

Abstract

The invention discloses a dehumidification device for a ring main unit, and the device is characterized in that the device comprises a controller which employs a single-chip microcomputer as a control core and is used for receiving a signal of a sensor, and the sensor is disposed in a cabinet body of the ring main unit; the dehumidification air duct is of a three-way design, a fan is arranged at the front end of the dehumidification air duct, and the fan is controlled through an output signal of the controller; a vortex tube is arranged at the left side end of the dehumidification air duct, a micro air compressor is arranged at the input end of the vortex tube, and the vortex tube is influenced by the micro air compressor to separate compressed air into cold air flow and hot air flow by utilizing the vortex effect in the vortex tube; the lower end of the dehumidification air duct is communicated with a water guide pipe, and the tail end of the water guide pipe is arranged outside the ring main unit body. The ring main unit is dehumidified in a compressed air dehumidification mode. And intelligent dehumidification and temperature adjustment of the internal environment of the ring main unit are realized.

Description

Technical Field

[0001] The invention relates to the field of ring network cabinet manufacturing, and in particular to a dehumidification device for a ring network cabinet. Background Art

[0002] Ring main unit is a high voltage switchgear mainly used in power transmission and distribution systems. Its core part consists of load switches and fuses, which have the advantages of simple structure, small size and low price. It can improve power supply parameters and performance while ensuring power supply safety. Ring main unit is widely used in distribution stations and box-type substations in urban residential areas, high-rise buildings, large public buildings, factories and enterprises and other load centers.

[0003] The main function of the ring main unit is to improve the reliability of power supply. It is usually used in 10kV power distribution systems, especially in AC 10kV power distribution systems such as industrial and mining enterprises, residential areas, ports and high-rise buildings. Due to the small load capacity, its high-voltage circuit is usually controlled by load switches or vacuum contactors and equipped with high-voltage fuse protection.

[0004] As an important part of the power system, the humidity control of the internal environment of the ring main unit is crucial for the normal operation of the equipment. A high humidity environment may cause electrical components to become damp, reduce insulation performance, and even cause short circuit failures.

[0005] Traditional dehumidification methods such as heating dehumidification and adsorption dehumidification have problems such as high energy consumption, low efficiency or high maintenance cost. Therefore, it is of great significance to develop a ring main unit dehumidification device that is efficient, energy-saving and easy to maintain. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, the purpose of the present invention is to provide a dehumidification device for a ring main unit, which dehumidifies the ring main unit by means of compressed air dehumidification, and realizes intelligent dehumidification and temperature regulation of the internal environment of the ring main unit.

[0007] In order to achieve the purpose of the present invention, the technical solution adopted is:

[0008] A dehumidification device for a ring main unit, comprising:

[0009] A controller, wherein the controller uses a single-chip microcomputer as a control core and is used to receive signals from sensors, wherein the sensors are arranged in a cabinet of a ring main unit;

[0010] Dehumidification air duct, the dehumidification air duct is a three-way design, a fan is arranged at the front end, and the fan is controlled by the output signal of the controller;

[0011] A vortex tube is arranged at the left end of the dehumidification air duct, and a micro air compressor is arranged at the input end of the vortex tube. The vortex tube is affected by the micro air compressor and uses the vortex effect inside the vortex tube to separate the compressed air into two cold and hot air flows;

[0012] The lower end of the dehumidification air duct is connected to the water pipe, and the end of the water pipe is arranged outside the ring network cabinet.

[0013] The beneficial effects of the present invention are:

[0014] 1) Significantly improve the humidity control capability of the internal environment of the ring main unit and extend the service life of the equipment.

[0015] 2) Reduce electrical failures caused by excessive humidity and improve the stability and safety of power system operation.

[0016] 3) Intelligent management reduces manual maintenance costs and improves operation and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following structure, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] like Figure 1 A dehumidification device for a ring main unit shown in the figure comprises a shell 1. A controller 2 is arranged in the upper end of the shell 1 to receive a signal from a sensor. The sensor is arranged in the cabinet of the ring main unit (not shown in the figure).

[0021] Controller 2 uses a single-chip microcomputer as the control core, which is responsible for receiving sensor signals, processing data and issuing control instructions. The temperature and humidity sensors are used to monitor the temperature and humidity changes inside the ring network cabinet in real time and provide accurate environmental parameters for the single-chip microcomputer.

[0022] A fan 3 is arranged in front of a dehumidification air duct 4 at the lower end of the housing 1. When the environment in the ring main unit reaches a condition requiring dehumidification, the controller 2 will send a control signal to control the input voltage of the fan 3, start the fan 3 and control the air volume, and actively suck the humid air in the ring main unit into the dehumidification air duct 4.

[0023] The lower end of the dehumidification air duct 4 is connected to the water conduit 5. The end of the water conduit 5 is arranged outside the ring main unit cabinet.

[0024] A vortex tube 7 is arranged on the left side of the dehumidification air duct 4. The vortex tube 7 has an input end and two output ends. The input end of the vortex tube 7 is connected to the output end of the micro air compressor 6. The two output ends are a cold end and a hot end respectively. The cold end is connected to the dehumidification air duct 4, and the hot end is arranged in the ring network cabinet.

[0025] The voltage of the micro air compressor 7 is controlled by the controller 2, thereby controlling the air volume input to the vortex tube 7. The micro air compressor 5 provides stable input air for the vortex tube to ensure the normal operation of the vortex tube.

[0026] The interior of the vortex tube 7 utilizes the vortex effect to separate the compressed air generated by the micro air compressor 7 into two cold and hot air flows. The hot end air flow is used to heat the ring network cabinet body, increase the temperature inside the cabinet, and reduce the relative humidity; the cold end air flow is used to condense the air in the dehumidification duct, so that the water vapor in the air is condensed into the water pipe 5, and then discharged out of the ring network cabinet body.

[0027] Because of the above structure, the working principle of the present invention is:

[0028] When the humidity sensor detects that the humidity in the ring network cabinet exceeds the set threshold, the controller 2 starts the fan 3 and starts the air compressor 6 according to the environment to provide compressed air to the vortex tube 7 for auxiliary dehumidification. The hot air generated by the vortex effect of the vortex tube 6 is guided to the inside of the ring network cabinet, which moderately increases the cabinet temperature and helps to reduce the relative humidity. The cold air generated is used to condense the water vapor in the air of the dehumidification channel, and the condensed water is discharged out of the cabinet through the water pipe 5. The controller 2 dynamically adjusts the fan speed and the vortex tube working parameters according to real-time data to achieve the best dehumidification effect. This invention changes the passive prevention of condensation to active guidance of condensation, effectively preventing the safety hazards caused by humidity and ensuring the safe operation of the power grid.

[0029] Compared with the prior art, the dehumidification device for a ring main unit of the present invention realizes automation and precise control of the dehumidification process through integrated single chip intelligent control. The dual effect of the vortex tube is utilized to heat the cabinet and condense moisture, thereby improving the dehumidification efficiency. The design is compact and easy to install in various types of ring main units, with strong applicability.

[0030] The basic principles and main features of the invention and the advantages of the invention are shown and described above.

[0031] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dehumidification device for a ring main unit, characterized in that: include: A controller, wherein the controller uses a single-chip microcomputer as a control core and is used to receive signals from sensors, wherein the sensors are arranged in a cabinet of a ring main unit; Dehumidification air duct, the dehumidification air duct is a three-way design, a fan is arranged at the front end, and the fan is controlled by the output signal of the controller; A vortex tube is arranged at the left end of the dehumidification air duct, and a micro air compressor is arranged at the input end of the vortex tube. The vortex tube is affected by the micro air compressor and uses the vortex effect inside the vortex tube to separate the compressed air into two cold and hot air flows; The lower end of the dehumidification air duct is connected to the water pipe, and the end of the water pipe is arranged outside the ring network cabinet.

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