Cable trench dehumidification cover plate

Abstract

The utility model relates to a dehumidifying cover plate for a cable trench. The cable trench dehumidification cover plate comprises an installation frame used for being placed on a cable trench, a top plate used for sealing the cable trench is arranged on the installation frame, a condensation piece located in the cable trench when used is arranged on the installation frame, and a water collection tank is arranged below the condensation piece. The cable trench dehumidification cover plate further comprises a drainage part, the drainage part comprises a drainage pump and a drainage pipe, and the lower end of the drainage pipe extends into the water collection tank. Wet air in the cable trench is condensed when encountering the condensation piece, condensed water enters the water collection tank along the condensation piece to be collected, and the condensed water in the water collection tank is discharged out of the cable trench through the drainage pump and the drainage pipe. Compared with the mode that the cable trench cover plate is opened manually, the cable trench cover plate dehumidification device only needs to control cold energy conveying to the condensation piece and control the drainage pump to drain water, the cable trench cover plate does not need to be opened, the labor intensity of workers can be greatly reduced, and the dehumidification effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of protection of power equipment in transformer substations, in particular to a dehumidification cover plate for a cable trench. Background Art

[0002] In a substation, each protection room, device, and power source usually need to be connected with cables or optical cables, which are usually arranged inside the cable trench. The cable trench is generally built below the ground with concrete or brick structures. In order to prevent rainwater, small animals, and foreign objects from entering the cable trench, a cover is usually placed above the cable trench to make the cable trench a relatively sealed environment.

[0003] However, in the rainy season, rainwater often flows into the cable trench. Due to the poor air flow in the cable trench, it is difficult for the internal moisture to evaporate. In addition, the heat generated by the cable itself will form a high temperature and high humidity environment inside the cable trench. The high temperature and high humidity environment will greatly accelerate the corrosion of the bridge and cables in the trench, or reduce the insulation of the cables due to the cables being soaked in water. In addition, the moisture in the trench will also be transmitted to the intelligent component cabinets, control cabinets, structural boxes and other equipment outside the cable trench through the "chimney effect", and form condensation, causing equipment malfunction, or serious corrosion of the box body and the terminal blocks inside the box, seriously endangering the safe operation of the power grid.

[0004] The current solution is that workers are required to regularly inspect the cable trench. If the humidity inside the cable trench is too high, the cable trench cover needs to be opened manually for ventilation, which greatly increases the workload of workers and the dehumidification effect is not very good. Utility Model Content

[0005] The utility model aims to provide a cable trench dehumidification cover plate to solve the problems in the prior art that workers open the cable trench cover plate for dehumidification, resulting in high labor intensity and poor dehumidification effect.

[0006] To achieve the above-mentioned purpose, a cable trench dehumidification cover of the utility model adopts the following technical scheme: a cable trench dehumidification cover, comprising a mounting frame for being placed on the cable trench, the mounting frame being provided with a top plate for sealing the cable trench, the mounting frame being provided with a condensation member which is located in the cable trench when in use, and a water collecting trough being provided below the condensation member; the cable trench dehumidification cover also comprises a drainage member, the drainage member comprises a drainage pump and a drainage pipe, the lower end of the drainage pipe extends into the water collecting trough.

[0007] The condensing element includes a sealed box body, which includes a vertical condensation plate and an insulation plate that forms a sealed box body with the vertical condensation plate. A semiconductor refrigeration plate is arranged on the vertical insulation plate opposite to the vertical condensation plate of the sealed box body. The cold end of the semiconductor refrigeration plate is located in the sealed box body, and the hot end of the semiconductor refrigeration plate is located outside the sealed box body.

[0008] A cooling block connected to the cold end of the semiconductor refrigeration plate is arranged in the sealed box, and a cooling fan is arranged between the cooling block and the condensation plate to blow cold air toward the condensation plate.

[0009] The condensation plate comprises a lower vertical section and an upper concave arc section, and the arc section is used to guide airflow.

[0010] The mounting frame is provided with a heat sink for dissipating heat from the hot end of the semiconductor refrigeration plate. The heat sink comprises a heat sink block in contact with the hot end of the semiconductor refrigeration plate for heat transfer and a heat sink fan located outside the heat sink block.

[0011] A guide plate is arranged above the heat dissipation fan to guide the gas to the heat dissipation fan.

[0012] The top plate comprises a photovoltaic panel arranged on a mounting frame, and a transparent protective plate is arranged above the photovoltaic panel.

[0013] The mounting frame is provided with a controller, the controller is connected to the semiconductor refrigeration sheet, the photovoltaic panel is connected to a battery, and the controller is connected to the battery.

[0014] A water level sensor is arranged in the water collecting tank, and the water level sensor is connected to the controller. A humidity sensor connected to the controller is arranged on the mounting frame or the condensing element.

[0015] The condensing plate is provided with a temperature sensor connected with the controller.

[0016] The beneficial effects of the utility model are as follows: the humid air in the cable trench encounters the condensation element and condenses, and the condensed water flows along the condensation element into the water collecting tank and is collected, and the condensed water in the water collecting tank is discharged from the cable trench through the drainage pump and the drainage pipe. Compared with the method of manually opening the cable trench cover, the utility model only needs to control the cold water delivered to the condensation element and control the drainage pump to drain water, and does not need to open the cable trench cover, which can greatly reduce the labor intensity of workers and has a good dehumidification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a cable trench dehumidification cover plate of the utility model;

[0018] Figure 2 yes Figure 1 A schematic diagram of the structure inside the sealed box;

[0019] Figure 3 yes Figure 1 Schematic diagram of the internal structure of the dehumidification cover plate in the cable trench;

[0020] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0021] Explanation of the reference numerals in the accompanying drawings: 1. mounting frame; 2. top plate; 3. photovoltaic panel; 4. protection plate; 5. sealing box; 6. insulation plate; 7. condensation plate; 8. vertical section; 9. arc section; 10. water collecting trough; 11. drain pipe; 12. drain pump; 13. water outlet pipe; 14. heat sink; 15. cooling fan; 16. drainage plate; 17. controller; 18. cooling plate; 19. cooling fan; 20. semiconductor cooling sheet; 21. mounting hole. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0023] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] An embodiment of a cable trench dehumidification cover plate of the utility model is as follows Figure 1-Figure 4 As shown, it includes a mounting frame 1, which is used to be placed on the cable trench, and a top plate 2 for sealing the cable trench is arranged on the mounting frame. In this embodiment, the top plate includes a photovoltaic panel 3 arranged on the mounting frame, and the photovoltaic panel is used to convert natural energy into electrical energy. The photovoltaic panel is connected to a battery, and the battery is used to store electrical energy. A transparent protective plate 4 is arranged above the photovoltaic panel. In this embodiment, the protective plate adopts a tempered glass plate, which can not only protect the photovoltaic panel but also not affect the normal operation of the photovoltaic panel, and can also seal the cable trench. A condensation member is arranged on the mounting frame, and the condensation member is located inside the cable trench when in use. A water collection tank 10 is arranged below the condensation member, which can be used to collect condensed water dripping from the condensation member on the one hand, and on the other hand, when in use, the water collection tank is arranged below the bottom of the cable trench, and rainwater flowing into the cable trench can also be collected. The cable trench dehumidification cover also includes a drainage member, and the drainage member includes a drainage pump 12 and a drainage pipe 12, the lower end of the drainage pipe extends into the water collection tank, and the drainage pump discharges rainwater or condensed water in the water collection tank into the cable trench through the outlet pipe 13.

[0025] In this embodiment, the condensation unit includes a sealed box 5, which includes a vertical condensation plate 7 and an insulation plate 6 that forms a sealed box with the vertical condensation plate, that is, the sealed box is surrounded by 1 condensation plate and 5 insulation plates, and the condensation plate is arranged vertically. A semiconductor refrigeration plate 20 is arranged on the vertical insulation plate opposite to the vertical condensation plate of the sealed box, and the cold end of the semiconductor refrigeration plate is located inside the sealed box, and the hot end of the semiconductor refrigeration plate is located outside the sealed box. Specifically, a mounting hole 21 is arranged on the mounting frame 1, and a through hole corresponding to the mounting hole is also arranged on the vertical insulation plate opposite to the vertical condensation plate of the sealed box. The semiconductor refrigeration plate is arranged in the mounting hole, and its cold end faces the sealed box. A cooling block 18 connected to the cold end of the semiconductor refrigeration plate is arranged in the sealed box, and the cooling block can be made of a copper block, which has a good cooling effect. A cold fan 19 is arranged between the cooling block and the condensation plate, and the function of the cold fan is to blow cold air to the condensation plate. The condensation plate 7 includes a vertical section 8 at the bottom and an arc section 9 at the top, and the arc section is used to guide the airflow. The condensation plate can be made of a copper plate, and the outer surface of the condensation plate is coated with a hydrophilic material. The purpose is to quickly reduce the temperature of the condensation plate, and the water condensed on the condensation plate can easily roll down. The purpose of the vertical section and the arc section of the condensation plate is to guide the air blowing in and promote the circulation of dry and wet air between the two cover plates in the upper and lower areas respectively.

[0026] The mounting frame is provided with a heat sink 14 for dissipating heat from the hot end of the semiconductor refrigeration chip. In this embodiment, the heat sink includes a heat sink block that contacts and transfers heat with the hot end of the semiconductor refrigeration chip and a heat sink fan 15 located outside the heat sink block. The heat sink block also uses a copper block or copper fins. The heat sink fan quickly dissipates the heat conducted by the heat sink block. The heat sink fan can also disturb the gas in the cable trench to accelerate the flow and circulation of the gas in the cable trench. A guide plate 16 is provided above the heat sink fan. The guide plate is an arc plate or an inclined straight plate, which is used to guide the gas to the heat sink fan.

[0027] In order to further reduce the labor intensity of workers, a controller 17 is provided on the mounting frame. The controller 17 is connected to the semiconductor cooling sheet 20, and the controller is connected to the battery. No additional power supply is required, and long-term use can save electricity. A water level sensor is provided in the water collection tank 10, and the water level sensor is connected to the controller. When the water level in the water collection tank reaches the set value, the controller controls the drainage pump to pump the water in the water collection tank out of the cable trench. A humidity sensor connected to the controller is provided on the mounting frame. Only when the humidity reaches or exceeds the set value, the controller will control the semiconductor cooling sheet to work after receiving the signal. A temperature sensor connected to the controller is provided on the condensing plate. The temperature sensor is used to detect the temperature of the condensing plate to avoid the problem of freezing when the temperature is less than zero degrees. The controller collects the signal of the temperature sensor and then performs feedback adjustment on the semiconductor cooling sheet.

[0028] When the humidity sensor detects that the humidity in the cable trench is greater than a certain set value, the semiconductor refrigeration sheet starts to work to lower the temperature of the condensation plate. When the air with relatively high humidity in the cable trench encounters the condensation plate, water will condense and fall into the water collection tank under the action of gravity. When the water level sensor in the water collection tank detects that there is water at a specified depth, it will start the drainage component to drain the water. When the water level sensor detects that the water has been drained, the drainage component will stop working. According to the actual situation of the cable trench on site, a cable trench dehumidification cover is arranged at a specified distance. The air between the two dehumidification covers will be continuously circulated and dehumidified under the action of the heat dissipation components, heat dissipation fans, condensation plates, and drainage plates, thereby reducing the humidity inside the entire cable trench, reducing power failures caused by excessive humidity in the cable trench, and increasing the service life of the cable. In addition, during the use of this cover, solar energy and batteries are used for power supply, avoiding the trouble of wiring and the danger of high voltage, making it more convenient to use.

[0029] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0030] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0031] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0032] In other embodiments of the utility model, the top plate may not include photovoltaic panels, and may be powered by a power supply station. In this case, the protective plate may be made of opaque plates of other materials, such as plastic plates, ceramic plates, etc., and batteries may not be used. The refrigeration parts may not use semiconductor refrigeration plates, and liquid nitrogen tanks may be used to cool the condensation plates.

Claims

1. A cable trench dehumidification cover, characterized in that: It includes a mounting frame for being placed on a cable trench, the mounting frame is provided with a top plate for sealing the cable trench, the mounting frame is provided with a condensation component which is located in the cable trench when in use, and a water collecting tank is provided below the condensation component; the cable trench dehumidification cover also includes a drainage component, the drainage component includes a drainage pump and a drainage pipe, and the lower end of the drainage pipe extends into the water collecting tank.

2. The cable trench dehumidification cover plate according to claim 1, characterized in that: The condensing element includes a sealed box body, which includes a vertical condensation plate and an insulation plate that forms a sealed box body with the vertical condensation plate. A semiconductor refrigeration plate is arranged on the vertical insulation plate opposite to the vertical condensation plate of the sealed box body. The cold end of the semiconductor refrigeration plate is located in the sealed box body, and the hot end of the semiconductor refrigeration plate is located outside the sealed box body.

3. The cable trench dehumidification cover plate according to claim 2, characterized in that: A cooling block connected to the cold end of the semiconductor refrigeration plate is arranged in the sealed box, and a cooling fan is arranged between the cooling block and the condensation plate to blow cold air toward the condensation plate.

4. The cable trench dehumidification cover plate according to claim 2, characterized in that: The condensation plate comprises a lower vertical section and an upper concave arc section, and the arc section is used to guide airflow.

5. The cable trench dehumidification cover according to any one of claims 2 to 4, characterized in that: The mounting frame is provided with a heat sink for dissipating heat from the hot end of the semiconductor refrigeration plate. The heat sink comprises a heat sink block in contact with the hot end of the semiconductor refrigeration plate for heat transfer and a heat sink fan located outside the heat sink block.

6. The cable trench dehumidification cover plate according to claim 5, characterized in that: A guide plate is arranged above the heat dissipation fan to guide the gas to the heat dissipation fan.

7. The cable trench dehumidification cover plate according to claim 2, characterized in that: The top plate comprises a photovoltaic panel arranged on a mounting frame, and a transparent protective plate is arranged above the photovoltaic panel.

8. The cable trench dehumidification cover plate according to claim 7, characterized in that: The mounting frame is provided with a controller, the controller is connected to the semiconductor refrigeration sheet, the photovoltaic panel is connected to a battery, and the controller is connected to the battery.

9. The cable trench dehumidification cover plate according to claim 8, characterized in that: A water level sensor is arranged in the water collecting tank, and the water level sensor is connected to the controller. A humidity sensor connected to the controller is arranged on the mounting frame or the condensing element.

10. The cable trench dehumidification cover plate according to claim 8, characterized in that: The condensing plate is provided with a temperature sensor connected with the controller.

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