Box-type substation box cover ventilation structure and box-type substation
By setting ventilation holes on the inner surface and lower bottom of the box cover of the box substation to form a ventilation duct, the problem of dust entering in the ventilation structure of the existing box substation is solved, and better ventilation effect and electrical safety are achieved.
Patent Information
- Application Number
- CN202421169436.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-05-27
AI Technical Summary
In the ventilation structure of the existing box-type substation, the heat dissipation hole is placed on the side wall of the box and the upper part of the box cover, causing external dust to easily enter the box and causing electrical safety accidents.
The first ventilation hole and the second ventilation hole are respectively provided on the inner surface of the box cover to form a longer ventilation duct, and while exhausting the hot air of the transformer, it is effective to avoid external dust and small animals entering.
Through this design, dust and small animals are effectively avoided from entering the box, improving the ventilation effect and electrical safety of the box substation, and reducing the internal temperature of the box.
Smart Images
Figure CN222749954U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of box-type transformer substations, in particular to a box-type transformer substation cover ventilation structure and a box-type transformer substation. Background Art
[0002] A box-type substation is a compact power distribution equipment that is prefabricated in a factory and installed indoors or outdoors. Its core is to organically combine the functions of transformer step-down and low-voltage power distribution, and install it in a steel structure box with ventilation, moisture-proof, dust-proof, and small animal-proof properties. At present, the ventilation of new energy box-type substations such as photovoltaic, wind power, and energy storage is generally achieved through heat dissipation holes set on the side walls of the box and the upper part of the box cover to complete the normal heat dissipation of the equipment in the box and prevent wind, sand, small animals, etc. from entering the box. Because the heat dissipation holes are placed on the side walls of the box and the upper part of the box cover, the ventilation path is relatively direct and the opening area is large. External dust can easily enter the box through the heat dissipation holes, causing dust to accumulate on the electrical equipment in the box, causing electrical safety accidents. Summary of the invention
[0003] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the utility model is to propose a box-type substation box cover ventilation structure, by respectively arranging a first ventilation hole 2 and a second ventilation hole 3 on the inner surface and the lower bottom surface of the box cover, while discharging the hot air of the transformer, it can effectively prevent external dust and small animals from entering the box.
[0004] To achieve the above purpose, the technical solution of the utility model is:
[0005] A box cover ventilation structure for a box-type substation comprises a box cover 1 with a cavity structure inside, wherein a first ventilation hole 2 is arranged on the inner surface of the box cover 1, and a second ventilation hole 3 is arranged on the lower bottom surface of the box cover 1.
[0006] Furthermore, there are multiple first ventilation holes 2 and multiple second ventilation holes 3.
[0007] Furthermore, the first ventilation hole 2 and the second ventilation hole 3 have a protection level of IP2X to IP4X.
[0008] Furthermore, the box cover 1 is a slope structure with a high middle and low sides.
[0009] A box-type substation comprises a box cover ventilation structure of the box-type substation.
[0010] Furthermore, the lower part of the side wall of the box-type substation has a third ventilation hole 4.
[0011] Furthermore, the third ventilation hole 4 has a protection grade of IP2X to IP4X.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. Different from the heat dissipation holes arranged on the upper part or side wall of the conventional box body, the utility model arranges the second ventilation hole 3 with the opening facing downward on the bottom surface of the box cover 1, which can effectively prevent dust from entering the box-type substation due to gravity while dissipating heat. At the same time, a longer ventilation duct is formed between the first ventilation hole 2 and the second ventilation hole 3, which can further effectively prevent external dust from entering the box-type substation due to gravity and horizontal force.
[0014] 2. In the utility model, there are multiple first ventilation holes 2 and second ventilation holes 3, with a large ventilation area and a more obvious ventilation effect; the first ventilation holes 2 and the second ventilation holes 3 have a protection level of IP2X to IP4X, which can ensure the mechanical strength of the support while ensuring the ventilation volume, and can prevent small external animals from entering.
[0015] 3. The box cover 1 of the utility model is a sloped structure with a high middle and low sides, which is conducive to the hot air inside the substation to gather upward and then flow to the first ventilation holes 2 on the inner surface of the box cover 1, so that the hot air can be discharged through the first ventilation holes 2 and the second ventilation holes 3. At the same time, this structure can allow rainwater on the top of the box cover to be smoothly discharged from the slope to avoid water accumulation on the top.
[0016] 4. The lower part of the side wall of the box-type substation of the utility model is provided with a third ventilation hole 4. Since the hot air inside the substation causes low pressure, the external cold air enters the box-type substation through the third ventilation hole 4 due to the pressure difference, and flows to the hot air position on the upper part of the transformer, further driving the hot air to flow through the first ventilation hole 2, the ventilation duct, and the second ventilation hole 3 of the box cover 1 to flow out of the box-type substation, thereby forming a gas circulation inside and outside the box-type substation, discharging the internal heat and reducing the internal temperature of the box-type substation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the box cover of the utility model.
[0018] Figure 2 It is a partial enlarged view of the first ventilation hole 2 and the second ventilation hole 3 of the utility model.
[0019] Figure 3 It is a schematic diagram of the ventilation principle of the utility model.
[0020] In the figure: 1, box cover, 2, first ventilation hole, 3, second ventilation hole, 4, third ventilation hole. DETAILED DESCRIPTION
[0021] The utility model is further described in detail below in conjunction with the accompanying drawings:
[0022] A box cover ventilation structure for a box-type substation comprises a box cover 1 with a cavity structure inside, a first ventilation hole 2 is arranged on the inner surface of the box cover 1, a second ventilation hole 3 with an opening facing downward is arranged on the lower bottom surface of the box cover 1, a ventilation duct is formed between the first ventilation hole 2 and the second ventilation hole 3, and hot air generated by the transformer flows through the first ventilation hole 2, the ventilation duct, and the second ventilation hole 3 to flow out of the box transformer, thereby exhausting the hot air.
[0023] Furthermore, there are multiple first ventilation holes 2 and second ventilation holes 3, and the first ventilation holes 2 and second ventilation holes 3 can also be symmetrically arranged on both sides of the center line of the top cover 1, so as to increase the ventilation hole area and make the ventilation effect more obvious.
[0024] Furthermore, the first ventilation hole 2 and the second ventilation hole 3 have a protection level of IP2X to IP4X. The first ventilation hole 2 and the second ventilation hole 3 are respectively composed of a plurality of small air holes of arbitrary rules (such as rectangular, square, diamond, and circular small air holes), which can ensure the mechanical strength of the support while ensuring the ventilation volume, and can prevent small external animals from entering.
[0025] Furthermore, the box cover 1 is a sloping structure that is high in the middle and low on both sides, which is conducive to the hot air inside the substation gathering upward and then flowing toward the first ventilation hole 2 on the inner surface of the box cover 1, making it easier for the hot air to be discharged through the first ventilation hole 2 and the second ventilation hole 3.
[0026] A box-type substation comprises a box cover ventilation structure of the box-type substation.
[0027] Furthermore, the lower part of the side wall of the box-type substation is provided with a third ventilation hole 4, and the hot air generated by the internal transformer moves upward. Affected by the pressure difference between the inside and the outside, the external cold air enters the box-type substation through the third ventilation hole 4 and flows to the hot air position at the top of the transformer, further driving the hot air to flow through the first ventilation hole 2, the ventilation duct, and the second ventilation hole 3 of the box cover 1 and out of the box-type substation.
[0028] Furthermore, the third ventilation hole 4 has a protection level of IP2X to IP4X, and is composed of a plurality of small air holes of arbitrary rules (such as rectangular, square, diamond, and circular small air holes), which ensures the mechanical strength of the support and prevents small external animals from entering while ensuring the ventilation volume.
[0029] The working principle of the utility model is:
[0030] The transformer generates heat during operation, and the heat heats the surrounding air. The hot air has a small density and low air pressure and moves upward, and is then discharged through the first ventilation hole 2, the ventilation duct, and the second ventilation hole 3; the lower part of the side wall of the box-type substation is also provided with a third ventilation hole 4. The hot air inside the box-type substation is affected by the pressure difference between the inside and the outside. The external cold air can flow into the box-type substation through the third ventilation hole 4 and move to the upper hot air position. The hot air is discharged from the box cover through the first ventilation hole 2, the ventilation duct, and the second ventilation hole 3, thereby forming a gas circulation inside and outside the box-type substation, further discharging the internal heat and reducing the internal temperature of the box-type substation.
Claims
1. A box cover ventilation structure for a box-type substation, characterized in that: The invention comprises a box cover (1) with a hollow structure inside, wherein a first ventilation hole (2) is provided on the inner surface of the box cover (1), and a second ventilation hole (3) is provided on the lower bottom surface of the box cover (1).
2. A box-type substation box cover ventilation structure according to claim 1, characterized in that: The first ventilation holes (2) and the second ventilation holes (3) are multiple in number.
3. A box-type substation box cover ventilation structure according to claim 1, characterized in that: The first ventilation hole (2) and the second ventilation hole (3) have a protection level of IP2X to IP4X.
4. A box-type substation box cover ventilation structure according to claim 1, characterized in that: The box cover (1) is a sloped structure with a high middle and low sides.
5. A box-type substation, characterized in that: The invention comprises a box cover ventilation structure of a box-type substation as described in any one of claims 1 to 4.
6. A box-type substation according to claim 5, characterized in that: The lower part of the side wall of the box-type substation is provided with a third ventilation hole (4).
7. A box-type substation according to claim 6, characterized in that: The third ventilation hole (4) has a protection level of IP2X to IP4X.