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Graphene heating and dehumidification device for dehumidification of electrical equipment installation cabinets

A technology of graphene heating sheet and electrical equipment, applied in the field of power transmission and transformation equipment, can solve the problems of large hidden safety hazards and inconvenient installation of dehumidification devices, and achieve the effects of avoiding excessive local temperature, occupying small space and wide application range.

Active Publication Date: 2020-11-17
LESHAN POWER SUPPLY COMPANY STATE GRID SICHUAN ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problems of the above-mentioned dehumidification device heated by resistance wires, which have great potential safety hazards and inconvenient installation, the present invention provides a graphene heating dehumidification device used for dehumidification of electrical equipment installation cabinets, which can dehumidify the inside of the switch cabinet, with uniform heat generation, Small in size and easy to install, it can be used in new switch cabinets, and can also replace the original resistance wire heating and dehumidification device of the switch cabinet

Method used

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  • Graphene heating and dehumidification device for dehumidification of electrical equipment installation cabinets
  • Graphene heating and dehumidification device for dehumidification of electrical equipment installation cabinets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] combine figure 1 , figure 2 , a graphene heating and dehumidifying device used for dehumidification of an electrical equipment installation cabinet, comprising a graphene heating sheet 1, the lower end surface of the graphene heating sheet 1 is provided with a lining 2; it can be understood that the lining 2 and graphite The alkene heating sheets 1 can be bonded together or fixedly connected together by screws. In this embodiment, in order to reduce the volume of the device, they are fixed together by bonding. The liner 2 can be made of plastic, but in order to ensure that the thickness of the liner 2 is as small as possible while having high rigidity, this embodiment is made of steel sheet. If the lining 2 is directly used as the base layer of the graphene coating of the graphene heating sheet 1, an insulating layer needs to be coated on the surface of the lining 2 in contact with the graphene coating. The middle part of the lower end of the lining 2 is provided wit...

Embodiment 2

[0031] Based on Embodiment 1, the groove 33 is used to hold the adhesive. The adhesive usually adopts quick-drying glue and instant adhesive. Of course, other adhesives can be used, but the longer the curing time of the adhesive, the corresponding The longer the time required to press the lining 2, the longer the installation efficiency will be affected. It should be noted that, during installation, it should be ensured that the adhesive in the groove 33 will not overflow, and the notch of the groove 33 is preferably sealed with a packaging film 37, that is, the notch of the groove 33 is covered with a packaging film 37.

[0032] Preferably, the cross-section of the groove 33 is a trapezoid with a large top and a small bottom. Correspondingly, the cross-section of the protrusion 21 is also a trapezoid with a large top and a small bottom, which can increase the rigidity of the lining 2 . The ends of the protrusions 21 are serrated, and can also be set in other sharp shapes, so a...

Embodiment 3

[0037] Based on the above embodiments, the graphene heating sheet 1 includes a waterproof layer and a base layer, and a graphene nano-coating is coated between the waterproof layer and the base layer. The waterproof layer is usually made of a flexible film, such as PE, PVC, waterproof and breathable film, etc.; by setting the waterproof layer, the graphene heating sheet 1 can be prevented from getting damp and affecting the service life. The graphene coating is electrically connected with a control circuit, and the control circuit is provided with a graphene coating power supply interface, which can control the voltage (such as a step-down circuit) supplied to the graphene coating through the control circuit.

[0038] The control circuit is also provided with an uplink communication interface for communicating with an upper computer (such as a single-chip microcomputer, PLC, or a control terminal in a LAN through a communication module), and an external environment temperature ...

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Abstract

The invention relates to the technical field of electric transmission and transformation equipment, in particular to a graphene heating and dehumidifying device for dehumidification of an electrical equipment installation cabinet body. According to the technical scheme, the graphene heating and dehumidifying device for the dehumidification of the electrical equipment installation cabinet body comprises a graphene heating sheet; a lining sheet is arranged on the lower end surface of the graphene heating sheet; a plurality of protrusions are arranged in the middle of the lower end of the liningsheet; the device further comprises an installation plate; a flexible first gasket is arranged at the upper end of the installation plate; a first through cavity is formed in the middle of the first gasket in a penetrating mode; a plurality of grooves are formed in the middle of the upper end of the installation plate; the grooves are matched with the protrusions; groove openings of the grooves are located in the first through cavity; a plurality of through holes are further formed in the middle of the installation plate in a penetrating mode; the upper ends of the through holes are all located in the first through cavity; a flexible second gasket is arranged at the lower end of the installation plate; a second through cavity is formed in the middle of the second gasket in a penetrating mode; and the lower ends of the through holes are positioned in the second through cavity. The device can dehumidify the interior of a switch cabinet, is uniform in heating, small in size and convenientto install, and not only can be used for a new switch cabinet but also can replace an original resistance wire heating and dehumidifying device of the switch cabinet.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation equipment, in particular to a graphene heating and dehumidification device used for dehumidification of electrical equipment installation cabinets. Background technique [0002] In recent years, with the continuous expansion and development of the power grid, distribution switchgears of various types and voltages have been widely used, but the humidity of the air in the cabinet has a great influence on the breakdown voltage parameters of electrical equipment such as insulators. Studies have shown that as the air humidity in the cabinet increases, the breakdown voltage of the insulator will drop significantly, which will easily cause arc discharge, endanger the insulation equipment of the switch cabinet and affect the normal power supply, and even cause a fire. Therefore, it is necessary to keep the air humidity in the switch cabinet below a certain value, and the comm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B1/28H02B1/30F26B23/06
CPCF26B23/06H02B1/28H02B1/30
Inventor 林双庆王锐康驰汪德荣胡桂英刘红兵徐登科王超李旭旭钟斌周雪宁金钟张昱顺杨晓昕刘盛晓潘鹏昊李成尹志军李强袁宇
Owner LESHAN POWER SUPPLY COMPANY STATE GRID SICHUAN ELECTRIC POWER
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