Substation cable trench cooling structure

Abstract

The utility model discloses a power substation cable trench cooling structure, which comprises a wall body enclosing to form a closed power substation and a cable trench positioned at the bottom of the power substation, the cable trench is buried under the ground of the power substation, and a cover plate is arranged above the cable trench to isolate the cable trench from the inside of the power substation; an air-conditioning refrigeration system is arranged in the substation, and two ends of the cable trench are respectively connected with an air supply shaft and an air outlet shaft which protrude out of the ground of the substation. According to the cable trench cooling structure of the substation, the cable trench is combined with the air shaft, and the air feeder, the air outlet fan, the temperature sensor and the humidity sensor are arranged, so that dry cold air can be fed into the cable trench by the substation, hot air in the cable trench is discharged out of the substation, and the effects of cooling and drying are achieved; start and stop of the air supply fan and the exhaust fan can be effectively controlled, and electricity is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable cooling, in particular to a cable trench cooling structure for a substation. Background Art

[0002] The substation is a closed space. Electrical equipment generates a lot of heat when working. In order to prevent the equipment from overheating and affecting working performance or even causing fire, an air conditioning system is usually installed in the substation for cooling. In order to reduce the various effects caused by exposed cables, a cable trench is usually set up in the house for the cables to pass through. The cables in the cable trench will also generate a lot of heat when working for a long time, and a cover is usually set above the cable trench. This also makes it difficult to discharge the heat generated by the cables in the cable trench, and the air conditioning system is also difficult to achieve a good cooling effect. Similarly, the humidity in the cable trench is also difficult to effectively adjust. If the temperature and humidity in the cable trench cannot be controlled, the current carrying capacity of the cable will be reduced, and the insulation of the cable that has been overloaded for a long time will gradually age, and even cause leakage accidents.

[0003] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a new technical solution. Utility Model Content

[0004] The utility model aims to provide a substation cable trench cooling structure which can effectively control the temperature and humidity in the cable trench in the substation, increase the service life of the cable and reduce potential safety hazards.

[0005] In order to solve the above technical problems, the utility model provides a substation cable trench cooling structure, and the specific technical solution is as follows:

[0006] A cable trench cooling structure for a substation comprises a wall body enclosing a closed substation and a cable trench located at the bottom of the substation, wherein the cable trench is buried under the ground of the substation, and a cover plate is provided above the cable trench to isolate the cable trench from the inside of the substation; an air conditioning and refrigeration system is provided in the substation, and both ends of the cable trench are respectively connected to an air supply shaft and an air outlet shaft protruding from the ground of the substation, wherein the inlet of the air supply shaft is close to the air conditioning and refrigeration system, the outlet of the air supply shaft is connected to the cable trench, the inlet of the air outlet shaft is connected to one end of the cable trench away from the air supply shaft, and the outlet of the air outlet shaft penetrates the wall body and is connected to the outside of the substation.

[0007] Preferably, an air supply fan is provided at the entrance of the air supply shaft, an air outlet fan is provided at the outlet of the air outlet shaft, and a temperature sensor is provided in the cable trench. The air supply fan and the air outlet fan are electrically connected to the temperature sensor to facilitate adjusting the air volume entering the cable trench according to the real-time temperature in the cable trench.

[0008] Preferably, a humidity sensor is also provided in the cable trench, and the humidity sensor is electrically connected to the air supply fan and the air outlet fan.

[0009] Preferably, an air passage is provided between the air supply shaft and the cable trench, and there are two air passages in parallel. The air supply shaft is connected to the cable trench through the two air passages, and solenoid valves are provided at one end of the two air passages connected to the air supply shaft. A drying area is provided in one of the air passages, and a solenoid valve is also provided at one end of the air passage with the drying area connected to the cable trench, and each solenoid valve is electrically connected to a humidity sensor respectively.

[0010] Preferably, the drying area includes two partition plates with air holes, the partition plates are adapted to the inner diameter of the air passage, and a desiccant bag is placed between the two partition plates.

[0011] Preferably, the inlet end of the air supply shaft and the outlet end of the air outlet shaft protrude from the ground of the substation by at least 1 m.

[0012] Preferably, the air conditioning and refrigeration system is a combination of one or more of an air conditioning cabinet, an air conditioning wall unit or an air conditioning fan coil unit, and the air outlet of the air conditioning and refrigeration system is far away from the ground of the substation.

[0013] The utility model provides a substation cable trench cooling structure, which has the following beneficial effects:

[0014] The utility model of the substation cable trench cooling structure combines the cable trench with the air shaft and is equipped with a blower, an exhaust blower, a temperature sensor and a humidity sensor, so that the substation can send dry cold air into the cable trench and discharge the hot air in the cable trench out of the substation, achieving the effect of cooling and drying, and can effectively control the start and stop of the blower and exhaust blower to save electricity;

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The figure is a schematic diagram of a substation cable trench cooling structure.

[0018] Among them, 1-wall; 11-cable trench; 12-cover plate; 2-air conditioning and refrigeration system; 3-air supply shaft; 31-air supply fan; 4-air outlet shaft; 41-air outlet fan; 5-temperature sensor; 6-humidity sensor; 61-solenoid valve; 62-drying area. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. Example

[0020] See also Figure 1 A substation cable trench cooling structure comprises a wall 1 enclosing a closed substation and a cable trench 11 at the bottom of the substation, wherein the cable trench is buried under the ground of the substation, and a cover plate 12 is provided above the cable trench to isolate the cable trench from the inside of the substation; an air conditioning and refrigeration system 2 is provided in the substation, and an air supply shaft 3 and an air outlet shaft 4 protruding from the ground of the substation are respectively connected at both ends of the cable trench, wherein the inlet of the air supply shaft is close to the air conditioning and refrigeration system, the outlet of the air supply shaft is connected to the cable trench, the inlet of the air outlet shaft is connected to one end of the cable trench away from the air supply shaft, and the outlet of the air outlet shaft penetrates the wall 1 and is connected to the outside of the substation.

[0021] An air supply fan 31 is provided at the entrance of the air supply shaft 3, an air outlet fan 41 is provided at the outlet of the air outlet shaft 4, and a temperature sensor 5 is provided in the cable trench 11. The air supply fan and the air outlet fan are both electrically connected to the temperature sensor to adjust the air volume entering the cable trench according to the real-time temperature in the cable trench.

[0022] A humidity sensor 6 is also provided in the cable trench 11, and the humidity sensor is electrically connected to the air supply fan and the air outlet fan.

[0023] An air passage is also provided between the air supply shaft 3 and the cable trench 11. There are two air passages in parallel. The air supply shaft is connected to the cable trench through the two air passages. An electromagnetic valve 61 is provided at one end of the two air passages connected to the air supply shaft. A drying area 62 is provided in one of the air passages. An electromagnetic valve is also provided at one end of the air passage with the drying area connected to the cable trench. Each solenoid valve is electrically connected to a humidity sensor respectively.

[0024] The drying area 62 includes two partition plates with air holes, the partition plates are adapted to the inner diameter of the air passage, and a desiccant bag is placed between the two partition plates.

[0025] When working, the temperature sensor 5 and the humidity sensor 6 simultaneously control the working status of the air supply fan 31 and the air outlet fan 41. Specifically, when the temperature in the cable trench exceeds 30°C or the humidity exceeds 60%, the air supply fan and the air outlet fan work to ventilate the cable trench. If only the temperature reaches the specified value but the humidity does not reach it, there is no need to dry the replacement air. The solenoid valves at both ends of the air supply channel with the drying area 62 are closed, and the solenoid valve of the other air supply channel is opened to blow cold air into the cable trench. If the humidity reaches the specified value, the solenoid valves at both ends of the air supply channel with the drying area are opened, and the solenoid valve of the other air supply channel is closed, so that the ventilation air enters the cable trench after being dried in the drying area, which is also beneficial to increasing the service life of the desiccant in the drying area.

[0026] The inlet end of the air supply shaft 3 and the outlet end of the air outlet shaft 4 protrude from the ground of the substation by at least 1m.

[0027] The air conditioning and refrigeration system is specifically a combination of one or more of an air conditioning cabinet, an air conditioning wall unit or an air conditioning fan coil unit, and the air outlet of the air conditioning and refrigeration system is far away from the ground of the substation.

[0028] The beneficial effects of the utility model are as follows: by combining the cable trench with the air shaft and equipping with a supply fan, an exhaust fan, a temperature sensor and a humidity sensor, the substation can send dry cold air into the cable trench and discharge the hot air in the cable trench out of the substation, thereby achieving the effect of cooling and drying, and can effectively control the start and stop of the supply and exhaust fans to save electricity.

[0029] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify and vary the above embodiments within the scope of the present invention.

Claims

1. A substation cable trench cooling structure, characterized by: The invention comprises a wall (1) enclosing a closed substation and a cable trench (11) located at the bottom of the substation, wherein the cable trench is buried under the ground of the substation and a cover plate (12) is provided above the cable trench to isolate the cable trench from the inside of the substation; an air conditioning and refrigeration system (2) is provided in the substation, and both ends of the cable trench are respectively connected to an air supply shaft (3) and an air outlet shaft (4) protruding from the ground of the substation, wherein the inlet of the air supply shaft is close to the air conditioning and refrigeration system, the outlet of the air supply shaft is connected to the cable trench, the inlet of the air outlet shaft is connected to an end of the cable trench away from the air supply shaft, and the outlet of the air outlet shaft penetrates the wall (1) to be connected to the outside of the substation.

2. The substation cable trench cooling structure according to claim 1 is characterized in that: An air supply fan (31) is provided at the entrance of the air supply shaft (3), an air outlet fan (41) is provided at the exit of the air outlet shaft (4), and a temperature sensor (5) is provided in the cable trench (11). The air supply fan and the air outlet fan are both electrically connected to the temperature sensor so as to adjust the air volume entering the cable trench according to the real-time temperature in the cable trench.

3. The substation cable trench cooling structure according to claim 2 is characterized by: A humidity sensor (6) is also provided in the cable trench (11), and the humidity sensor is electrically connected to the air supply fan and the air outlet fan.

4. The substation cable trench cooling structure according to claim 3 is characterized by: An air passage is also provided between the air supply shaft (3) and the cable trench (11), and the air passages are two parallel air passages. The air supply shaft is connected to the cable trench via the two air passages, and both ends of the two air passages connected to the air supply shaft are provided with a solenoid valve (61). A drying area (62) is provided in one of the air passages, and a solenoid valve is also provided at the end of the air passage with the drying area connected to the cable trench, and each solenoid valve is electrically connected to a humidity sensor.

5. The substation cable trench cooling structure according to claim 4 is characterized in that: The drying area (62) comprises two partition boards with air holes, the partition boards are adapted to the inner diameter of the air passage, and a desiccant bag is placed between the two partition boards.

6. The substation cable trench cooling structure according to claim 1 is characterized by: The inlet end of the air supply shaft (3) and the outlet end of the air outlet shaft (4) protrude from the ground of the substation by at least 1m.

7. The substation cable trench cooling structure according to claim 1 is characterized by: The air conditioning and refrigeration system is specifically a combination of one or more of an air conditioning cabinet, an air conditioning wall unit or an air conditioning fan coil unit, and the air outlet of the air conditioning and refrigeration system is far away from the ground of the substation.

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