阅读说明：本技术 一种预装式变电站箱顶结构 (Prefabricated substation box top structure ) 是由 王静 顾伟 张志键 杨佳泉 李力 陆培钧 贾辰 杨建平 郝柱 于 2021-07-30 设计创作，主要内容包括：本发明公开了一种电气设备技术领域的预装式变电站箱顶结构,该变电站箱包括外壳,外壳内部设有高压室、变压器室和低压室,所述箱顶结构包括内部形成空腔的双层箱顶,所述双层箱顶的四周设有可通风箱沿,所述双层箱顶的底层包括高压室顶和低压室顶,在外壳内部分别将变压器室和高压室以及变压器室和低压室隔开,对应于变压器室的上方开有通风口。该箱顶结构既可提高变压器室的通风散热能力,提高变压器寿命,又避免变压器室的热量进入预装式变电站的高压室和低压室,影响高低压室的元器件,延长元器件的使用寿命,还能防止雨水倒流入壳体内,满足外壳的防护能力。(The invention discloses a prefabricated substation box top structure in the technical field of electrical equipment, which comprises a shell, wherein a high-pressure chamber, a transformer chamber and a low-pressure chamber are arranged in the shell, the box top structure comprises a double-layer box top with a cavity formed inside, a box edge capable of ventilating is arranged on the periphery of the double-layer box top, the bottom layer of the double-layer box top comprises the high-pressure chamber top and the low-pressure chamber top, the transformer chamber and the high-pressure chamber as well as the transformer chamber and the low-pressure chamber are respectively separated in the shell, and a ventilation opening is formed above the transformer chamber. The box top structure can improve the ventilation and heat dissipation capacity of the transformer chamber, prolong the service life of the transformer, prevent heat of the transformer chamber from entering a high-pressure chamber and a low-pressure chamber of a prefabricated substation, influence components of the high-pressure chamber and the low-pressure chamber, prolong the service life of the components, prevent rainwater from flowing back into the shell, and meet the protection capacity of the shell.)

1. The utility model provides a prepackage type transformer substation roof structure, this transformer substation case include the shell, and the shell is inside to be equipped with high-pressure chamber, transformer room and low-pressure chamber, its characterized in that the roof structure is including inside double-deck roof (2) that form the cavity, but be equipped with ventilation box along (1) around double-deck roof (2), bottom (22) of double-deck roof (2) are including high-pressure roof (221) and low-pressure roof (222), and the inside transformer room and high-pressure chamber and transformer room and low-pressure chamber of separating respectively of shell have vent (23) to open corresponding to the top of transformer room.

2. The prefabricated substation roof structure according to claim 1, characterized in that the top layer (21) of the double-deck roof (2) is of herringbone construction with a pitch of more than or equal to 5 °.

3. A preassembled substation box top structure according to claim 1, characterized in that the ventilation holes (12) are square holes, and are evenly arranged at the bottom of the box edge (1).

4. The pre-assembled substation roof structure according to claim 1, characterized in that the vent hole (12) is lined with a stainless steel mesh (121) with a 2mm aperture.

5. The preassembled substation roof structure of claim 1, characterized in that the box edge (1) is provided with a backflow prevention structure (11) along the outer bottom edge.

6. Preassembled substation roof structure according to claim 1, characterized in that the gap of the shutter (13) is 1.5 mm.

Technical Field

The invention relates to a box top structure of a pre-installed transformer substation, and belongs to the technical field of electrical equipment.

Background

The prefabricated substation integrates high-voltage power receiving equipment, a distribution transformer and low-voltage power distribution, generally needs to be installed in a steel structure box body which has certain moisture resistance, rust resistance, dust resistance, mouse resistance, fire resistance, theft resistance, heat insulation, full sealing and mobility, and has the characteristics of safety, reliability, flexible assembly, strong adaptability, convenient transportation and installation and the like.

The market demands on the temperature rise and the protection grade of the prefabricated substation are more and more emphasized, and the design of the box top is a key factor for determining the temperature rise and the protection grade of the prefabricated substation. The transformer in the pre-installed power station is installed in a narrow space, more heat is generated during operation, and the temperature rise of the transformer is increased due to the radiation of outdoor sunlight; the protection of the housing of the pre-installed substation is also particularly important, since the pre-installed substation is outdoors. The box top structure of the prefabricated substation not only needs to improve the ventilation and heat dissipation capacity of a transformer chamber, but also needs to meet the protection capacity of a shell.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a box top structure of a prefabricated substation, which can improve the ventilation and heat dissipation capacity of a transformer chamber, prolong the service life of the transformer, prevent heat of the transformer chamber from entering a high-pressure chamber and a low-pressure chamber of the prefabricated substation, influence components of the high-pressure chamber and the low-pressure chamber, prolong the service life of the components, prevent rainwater from flowing back into a shell and meet the protection capacity of the shell.

In order to achieve the purpose, the invention is realized by adopting the following technical scheme:

the utility model provides a prepackage type transformer substation roof structure, this transformer substation case include the shell, and the shell is inside to be equipped with hyperbaric chamber, transformer room and low-pressure chamber, the roof structure includes the double-deck roof of inside vacuole formation, be equipped with the case edge around the double-deck roof, the bottom on case edge is equipped with a plurality of ventilation holes, and the lateral part is equipped with the shutter, the bottom on double-deck roof includes hyperbaric chamber top and low-pressure roof, and the inside transformer room and hyperbaric chamber and transformer room and low-pressure chamber that will separate respectively of shell are opened there is the vent corresponding to the top of transformer room.

Preferably, the top layer of the double-layer box top is of a herringbone structure, the inclination of the double-layer box top is more than or equal to 5 degrees, internal airflow can be evacuated, and sundries can be prevented from being accumulated on the top.

Preferably, the bottom of the edge of the ventable box is provided with a plurality of vent holes, and the side part of the ventable box is provided with a shutter. Further preferably, the ventilation holes are square, and are uniformly arranged at the bottom of the box edge, the ventilation holes are preferably arranged into two rows with a distance of 10mm, the size of the ventilation holes is 30mm multiplied by 30mm, and the diameter of the inner lining at the ventilation holes is 2 mm. The ventilation holes are formed to facilitate ventilation and heat dissipation inside the box top, the steel wire mesh can prevent sundries from entering, the fingers of workers can be prevented from being inserted carelessly, and the protection effect is improved.

Further preferably, the ventilated box is provided with a backflow preventing structure along the outer bottom edge, the backflow preventing structure can be set to be a step type bend, the step type bend comprises an upward bending edge and an inward bending edge, the lengths of the two edges are both 20mm, and the bottom of the step type bend is lower than the bottom of the louver.

Further preferably, the gap of the louver is 1.5mm, and the temperature rise performance of the prefabricated substation is improved.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the invention, the transformer chamber and the high-voltage chamber and the transformer chamber and the low-voltage chamber are respectively separated in the shell through the top of the high-voltage chamber box and the top of the low-voltage chamber box, the heat of the transformer chamber rises to the ventilation opening and is dissipated through the ventilation box edge, so that the heat of the transformer chamber is prevented from entering the high-voltage chamber and the low-voltage chamber of the prefabricated substation to influence the components of the high-voltage chamber and the low-voltage chamber, and the service lives of the components are prolonged.

(2) According to the invention, through the arrangement of the double-layer box top and the matched box edge, a ventilation channel for ventilation and heat dissipation of the transformer room is arranged, the temperature rise performance of the transformer room is improved, and rainwater at the box edge can be prevented from entering the housing of the pre-installed transformer substation through the box top.

Drawings

FIG. 1 is a schematic bottom view of an embodiment of the roof structure of the present invention.

Fig. 2 is a schematic side view of a double-deck roof according to an embodiment of the roof structure of the present invention.

Fig. 3 is a schematic structural view of a backflow preventing structure according to an embodiment of the roof structure of the present invention.

Fig. 4 is a partially enlarged view of a portion I in fig. 3.

In the figure: 1-ventable tank edge, 11-backflow prevention structure, 111-upward bent edge, 112-inward bent edge, 12-vent hole, 121-stainless steel wire mesh 13-louver, 2-double-layer tank top, 21-top layer, 22-bottom layer, 221-high pressure chamber top, 222-low pressure chamber top and 223-vent hole.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "back", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are used for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Examples

According to the prefabricated substation box top structure shown in fig. 1-4, the substation box comprises a shell, a high-pressure chamber, a transformer chamber and a low-pressure chamber are arranged in the shell, the box top structure comprises a double-layer box top 2 with a cavity formed inside, and a ventilating box edge 1 is arranged on the periphery of the double-layer box top 2. The bottom layer 22 of the double-deck roof 2 includes a high-pressure ceiling 221 and a low-pressure ceiling 222, and the transformer chamber and the high-pressure chamber and the transformer chamber and the low-pressure chamber are partitioned by the inside of the housing, respectively, and a ventilation opening 23 is opened corresponding to the upper side of the transformer chamber.

The top layer 21 of the double-layer box top 2 is of a herringbone structure, the inclination of the top layer is more than or equal to 5 degrees, the internal airflow can be evacuated, and sundries can be prevented from being accumulated on the top.

This embodiment but ventilation case is equipped with two rows of length of side and is 30 mm's ventilation hole 12 along 1 bottom, and interval 10mm align to grid, and inside lining aperture is 2 mm's stainless wire net 121. The side of the ventable box 1 is provided with a blind 13, and the gap of the blind 13 is 1.5 mm.

This embodiment but ventilation case is equipped with along 1 outside base and prevents backflow structure 11, prevent that backflow structure 11 is the step and bend, the step is bent including upwards bending 111 and the inside edge 112 of bending, and both sides length is 20 mm.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.