Top cover ventilation mechanism for prefabricated substation

Abstract

The utility model discloses a top cover ventilation mechanism for a prefabricated substation, which comprises a top cover body, a cavity is arranged on the top cover body, a partition plate is arranged in the cavity to divide the cavity into a natural ventilation chamber and a forced air exhaust chamber, a plurality of air exhaust ports are arranged on one side of the top cover body, and the air exhaust ports are communicated with the natural ventilation chamber and the forced air exhaust chamber. The top cover body is provided with a natural ventilation chamber and a forced exhaust chamber, the natural ventilation chamber and the forced exhaust chamber are communicated with corresponding exhaust outlets, the bottom of the top cover body is provided with a plurality of ventilation units communicated with the natural ventilation chamber, and the bottom of the top cover body is provided with a plurality of forced exhaust units communicated with the forced exhaust chamber. Temperature rise of the transformer is reduced, service life of the transformer is prolonged, and use cost of users is reduced.

Description

[Technical field]

[0001] The utility model relates to the technical field of prefabricated transformer substations, in particular to a ventilation mechanism for a top cover of a prefabricated transformer substation. [Background technology]

[0002] A box-type substation usually consists of a box body and high-voltage cabinets, transformers, and low-voltage cabinets installed in the box body. Due to the special environmental conditions of the relevant electrical equipment in the European box-type substation and its promotion and application in the field of new energy, the problem of product reliability is more prominent. An important technical indicator of electrical equipment is the operating temperature. High temperature will accelerate the aging of the insulation of electrical equipment, reduce its service life, and even directly cause failures. When the electrical equipment is in operation, it is equivalent to multiple heating elements. The heat emitted by these devices causes the air around the heating elements to expand through heat transfer. The degree of expansion is related to the amount of heat received per unit time and the gas flow rate. These expanding gases with high heat content constitute a temporary external microenvironment for the electrical equipment.

[0003] In order to prevent electrical equipment from running at too high a temperature, the top fan needs to be turned on for exhaust when the load is high and the heat is low when the load is light, and natural ventilation is sufficient without turning on the top fan. When the load is on, the top fan will re-inject some hot air back into the transformer room, resulting in reduced heat dissipation in the transformer room, excessive temperature rise affecting service life, and other consequences. [Utility Model Content]

[0004] The purpose of the utility model is to solve the problems in the prior art and to propose a ventilation mechanism for the top cover of a prefabricated substation, which can solve the problem of hot air backflow on the top cover, reduce the temperature rise of the transformer room, increase the service life of the transformer, and reduce the user's use cost.

[0005] To achieve the above-mentioned purpose, the utility model proposes a roof ventilation mechanism for a prefabricated substation, including a roof body, a chamber is provided on the roof body, a partition is provided in the chamber to separate it into a natural ventilation chamber and a forced exhaust chamber, a plurality of exhaust ports are provided on one side of the roof body, the natural ventilation chamber and the forced exhaust chamber are connected to the corresponding exhaust ports, a plurality of ventilation units connected to the natural ventilation chamber are provided at the bottom of the roof body, and a plurality of forced exhaust units connected to the forced exhaust chamber are provided at the bottom of the roof body.

[0006] Preferably, the ventilation unit is a plate having mesh ventilation holes.

[0007] Preferably, a reinforcing angle steel for mounting a ventilation unit is provided at the bottom of the chamber.

[0008] Preferably, the forced exhaust unit is an exhaust fan.

[0009] Preferably, a plurality of transverse reinforcement bodies are provided at the bottom of the chamber.

[0010] Beneficial effects of the utility model: The utility model divides the chamber into a natural ventilation chamber and a forced exhaust chamber by installing a partition in the chamber, thereby preventing the hot air from being fed back into the box transformer through the natural ventilation chamber during forced exhaust. The natural ventilation scheme is adopted when the load is light to save energy and increase the life of the fan. When the load increases, the forced exhaust is turned on to increase the ventilation volume, which can save 5% of energy consumption and provide an additional 60m3 / min of air volume when the load is high. Compared with the prior art, it can solve the problem of hot air backflow from the top cover, reduce the temperature rise of the transformer room, increase the service life of the transformer, and reduce the user's use cost.

[0011] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0012] Figure 1 This is a structural schematic diagram of a ventilation mechanism for a prefabricated substation top cover of the utility model;

[0013] Figure 2 yes Figure 1 Cross-sectional view of BB.

[0014] In the figure: 1-top cover body, 2-reinforced angle steel, 3-partition, 4-natural ventilation chamber, 5-forced exhaust chamber, 6-exhaust port, 7-ventilation unit, 8-forced exhaust unit, 9-lateral reinforcement body. [Specific implementation method]

[0015] See also Figure 1 , 2 The utility model discloses a roof ventilation mechanism for a prefabricated substation, comprising a roof body 1, a chamber is provided on the roof body 1, a partition 3 is provided in the chamber to separate it into a natural ventilation chamber 4 and a forced exhaust chamber 5, a plurality of exhaust ports 6 are provided on one side of the roof body 1, the natural ventilation chamber 4 and the forced exhaust chamber 5 are connected with the corresponding exhaust ports 6, a plurality of ventilation units 7 connected with the natural ventilation chamber 4 are provided at the bottom of the roof body 1, and a plurality of forced exhaust units 8 connected with the forced exhaust chamber 5 are provided at the bottom of the roof body 1.

[0016] The ventilation unit 7 is a plate body with mesh ventilation holes.

[0017] A reinforcing angle steel 2 for mounting a ventilation unit 7 is provided at the bottom of the chamber.

[0018] The forced exhaust unit 8 is an exhaust fan.

[0019] A plurality of transverse reinforcement bodies 9 are provided at the bottom of the chamber.

[0020] Working process of this utility model:

[0021] The utility model is a prefabricated substation roof ventilation mechanism, which adopts a natural ventilation structure on one side and a fan forced exhaust structure on the other side during operation. The natural ventilation scheme is adopted when the load is light, and the heat in the substation box enters the natural ventilation chamber 4 through the ventilation unit 7, and is finally discharged from the corresponding exhaust port 6. When the load increases, the fan forced exhaust is adopted, and the heat in the substation box enters the forced exhaust chamber 5 under the action of the forced exhaust unit 8, and is finally discharged from the corresponding exhaust port 6.

[0022] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A ventilation mechanism for a prefabricated substation roof, characterized in that: The invention comprises a top cover body (1), wherein a chamber is provided on the top cover body (1), wherein a partition (3) is provided in the chamber to divide the chamber into a natural ventilation chamber (4) and a forced exhaust chamber (5), wherein a plurality of exhaust ports (6) are provided on one side of the top cover body (1), wherein the natural ventilation chamber (4) and the forced exhaust chamber (5) are connected to the corresponding exhaust ports (6), wherein a plurality of ventilation units (7) connected to the natural ventilation chamber (4) are provided at the bottom of the top cover body (1), and a plurality of forced exhaust units (8) connected to the forced exhaust chamber (5) are provided at the bottom of the top cover body (1).

2. A ventilation mechanism for a prefabricated substation roof as claimed in claim 1, characterized in that: The ventilation unit (7) is a plate body having mesh ventilation holes.

3. A ventilation mechanism for a prefabricated substation roof as claimed in claim 1, characterized in that: A reinforcing angle steel (2) for mounting a ventilation unit (7) is provided at the bottom of the chamber.

4. A ventilation mechanism for a prefabricated substation roof as claimed in claim 1, characterized in that: The forced exhaust unit (8) is an exhaust fan.

5. A ventilation mechanism for a prefabricated substation roof as claimed in any one of claims 1 to 4, characterized in that: A plurality of transverse reinforcement bodies (9) are provided at the bottom of the chamber.

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