Box transformer top cover structure and box-type substation

Abstract

The utility model relates to substation technical field especially is related to a box -type substation and box -type transformer top cover structure. Top cover structure adopts inside and outside double -layer waterproof layer, can promote the heat -proof, waterproof etc. of box -type transformer top cover protective performance, at the same time, at least outer waterproof layer adopts assembled splicing structure, solved the technical problem that partial damage needs to replace entire box -type transformer top cover, has the advantage that maintenance cost is low. The air heat -insulating layer between inside and outside waterproof layer can weaken heat transfer, create stable internal operating environment for equipment, the door plate vent and top cover vent of new energy box -type substation design form heat circulation when operating, can realize the heat dissipation and temperature rise control of box -type substation. The above -mentioned box -type transformer top cover structure can satisfy the demand of temperature control requirement strict or face strong sunshine, high temperature, high humidity and other severe outdoor working condition, and the double -layer top cover is the key decision of guaranteeing the safety, stability of precision and expensive electrical equipment and realizing the life cycle cost optimization.

Description

Technical Field

[0001] This utility model relates to the field of substation technology, and in particular to a novel box-type substation top cover structure and a box-type substation. Background Technology

[0002] The top cover of the prefabricated substation is the most critical component in ensuring the protection level (especially rain and dust protection) of the prefabricated substation. As the "roof" of the enclosure, the primary task of the top cover is to ensure that the interior of the prefabricated substation achieves a high level of protection. This is crucial for ensuring the safe, stable, and long-term operation of the electrical equipment inside the prefabricated substation. At the same time, it must also take into account the temperature rise during the operation of the prefabricated substation and achieve heat dissipation.

[0003] The inventor is aware that many transformer substation top covers use a single-layer structure. Although the structure is simple and the cost is low, the heat insulation effect is generally poor, and the sealing and protection reliability depends entirely on the structural integrity of the single-layer material. Single-layer structures are inherently prone to damage. Once a local damage occurs, it will lead to leakage of the entire top cover, which will cause water to enter or become damp in the substation. This will directly cause instantaneous risks such as short circuits and insulation breakdowns in the electrical equipment inside the substation, and accelerate equipment corrosion, posing a serious threat to the long-term safe operation of the transformer substation system. Summary of the Invention

[0004] The purpose of this utility model is to provide a novel transformer substation top cover structure and a transformer substation to solve the problems existing in the prior art. The top cover structure adopts an inner and outer double waterproof layer, which can improve the heat insulation, waterproof and other protective performance of the transformer substation top cover. At the same time, at least the outer waterproof layer adopts an assembled splicing structure, which overcomes the technical problem that the entire transformer substation top cover needs to be replaced when there is partial damage, and has the advantage of low maintenance cost.

[0005] To achieve the above objectives, this utility model provides the following solution: On one hand, this utility model provides a transformer substation top cover structure for installation on the top of the transformer substation main frame, including an outer waterproof layer and an inner waterproof layer disposed below the outer waterproof layer on the inner side. An air cavity for heat insulation is formed between the outer waterproof layer and the inner waterproof layer, and the air cavity is provided with a through hole that can connect the outside and the inside of the transformer substation main frame to dissipate heat from the inside of the transformer substation main frame; the outer waterproof layer adopts an assembled splicing structure.

[0006] In some embodiments, the external waterproof layer includes a longitudinal ventilation and protection panel, a ridge panel, a top panel, and a transverse ventilation and protection panel. Two sets of the longitudinal and transverse ventilation and protection panels are symmetrically arranged, and the two sets of longitudinal and transverse ventilation and protection panels are assembled to form a rectangular frame. An external roof cover plate, which is assembled from the top panel in the transverse direction, is provided at both the front and rear of the external waterproof layer. Each external roof cover plate is an inclined, sealed, and water-guiding slope, and each external roof cover plate is sealed and spliced ​​with the corresponding longitudinal and transverse ventilation and protection panels. A transverse splicing seam is formed between the two external roof cover plates at the front and rear. The ridge panel is fixed above the transverse splicing seam to cover it.

[0007] In some embodiments, in any of the outer top cover plates: Any two adjacent top plates are connected by a "V" shaped interlocking structure and fixed with bolts; The two top plates located at the two transverse ends are respectively sealed and overlapped with the two longitudinal ventilation and protective plates by folded edges, and are fixed by bolts; The bottom end of any of the top plates is provided with a main drip edge that extends beyond the corresponding position of the transverse ventilation and protective plate.

[0008] In some embodiments, a dustproof mesh is provided at the transverse seam to prevent dust from entering.

[0009] In some embodiments, any one of the longitudinal ventilation protection panels and any one of the transverse ventilation protection panels are L-shaped protection panels with a right-angled cross-section, and the vertical plate of the L-shaped protection panel is closed, while the horizontal plate is provided with bridge-type ventilation holes and water passage holes. In any one of the longitudinal ventilation protection panels and any one of the transverse ventilation protection panels, the side of the horizontal panel away from the vertical panel is bent upward to form an installation vertical panel; the inner waterproof layer is fixed to the installation vertical panel.

[0010] In some embodiments, the inner waterproof layer includes a rectangular beam frame, a front waterproofing liner, a rear waterproofing liner, and a herringbone ventilation support beam, wherein: The rectangular beam frame includes two longitudinal beams and two transverse beams arranged opposite to each other. The two longitudinal beams are respectively fixed to the mounting vertical plates of the two longitudinal ventilation and protection plates; the two transverse beams are respectively fixed to the mounting vertical plates of the two transverse ventilation and protection plates. Multiple herringbone ventilation support beams are arranged at transverse intervals along the rectangular beam frame, and any one of the herringbone ventilation support beams is parallel to the longitudinal direction of the rectangular beam frame. Several of the aforementioned front waterproof panels are assembled laterally to form an inner front top cover and fixed to the front of each of the aforementioned herringbone ventilation support beams; several of the aforementioned rear waterproof panels are assembled laterally to form an inner rear top cover and fixed to the rear of each of the aforementioned herringbone ventilation support beams; The bottom ends of both the inner front top cover and the inner rear top cover are provided with secondary drip edges that extend beyond the corresponding transverse beams. Both the inner front top cover and the inner rear top cover are provided with secondary drip edges extending beyond the two outermost herringbone ventilation support beams at their lateral ends.

[0011] In some embodiments, a side transverse ventilation support beam is further supported and connected between any of the front waterproofing plates, any of the rear waterproofing plates and the corresponding transverse beams; and an intermediate transverse ventilation support beam is further supported and connected between the tip of the outer waterproofing layer and the tip of the inner waterproofing layer.

[0012] In some embodiments, a dustproof screen is provided at any of the bridge-type ventilation holes, any of the water passage holes, any of the ventilation holes on any of the side transverse ventilation support beams, and any of the ventilation holes on any of the intermediate transverse ventilation support beams.

[0013] In some embodiments, the top of any of the front waterproofing panels is provided with a Z-shaped folded edge that overlaps with the corresponding rear waterproofing panel and is fixed by bolts; Each of the front waterproof panels has a Z-shaped folded edge on its right side that seals and overlaps with the adjacent front waterproof panel, and each of the rear waterproof panels has a Z-shaped folded edge on its right side that seals and overlaps with the adjacent rear waterproof panel. Any adjacent rear waterproof panels and any adjacent front waterproof panels are connected by the left and right overlaps of the Z-shaped folded edge and fixed with bolts. Z-shaped fixing brackets are provided between any two adjacent front waterproof panels and between any two adjacent rear waterproof panels; the outer top cover is fixed to the top of the Z-shaped fixing brackets by bolts.

[0014] On the other hand, this utility model also proposes a prefabricated substation, including a prefabricated substation main frame and a prefabricated substation top cover structure as described in any one of the above, wherein the prefabricated substation top cover structure is installed on the top of the prefabricated substation main frame.

[0015] The present invention achieves the following technical advantages over the prior art: The transformer substation top cover structure and transformer substation proposed in this utility model adopt a double-layer waterproof structure, which can improve the heat insulation, waterproof and other protective performance of the transformer substation top cover. At the same time, at least the outer waterproof layer adopts an assembled splicing structure, which solves the technical problem of needing to replace the entire transformer substation top cover when there is partial damage, and has the advantage of low maintenance cost. The specific beneficial effects are as follows: First, even if the outer waterproof layer leaks slightly, the inner waterproof layer can effectively block it, forming a "double insurance"; Second, the air insulation layer between the inner and outer waterproof layers can reduce heat transfer and create a stable internal operating environment for the equipment. Third, the ventilation holes in the door panels and top cover of the new energy prefabricated substation are designed to facilitate heat flow during operation, thereby enabling heat dissipation and temperature rise control of the prefabricated substation.

[0016] The aforementioned transformer substation top cover structure can meet the requirements of stringent temperature control or harsh outdoor working conditions such as strong sunlight, high temperature, and high humidity. This double-layer top cover is a key decision to ensure the safety and stability of precision and expensive electrical equipment and to optimize the cost throughout the entire life cycle. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the internal structure of the transformer substation top cover structure disclosed in an embodiment of this utility model; Figure 2 This is a schematic diagram of the external structure of the transformer substation top cover structure disclosed in this embodiment of the utility model; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a cross-sectional structural diagram of the transformer substation top cover structure disclosed in an embodiment of this utility model; Figure 5 for Figure 4 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the front and rear overlap of the Z-shaped folded edges of the front and rear waterproof panels disclosed in an embodiment of this utility model; Figure 7 for Figure 6 Enlarged structural diagram at point C; Figure 8 This is a schematic diagram of the inner waterproof layer in the top cover structure of the transformer substation disclosed in this embodiment of the utility model; Figure 9 This is a schematic diagram of the U-shaped interlocking structure between the top plates disclosed in an embodiment of this utility model; Figure 10 for Figure 9 Enlarged structural diagram at point D; Figure 11This is a schematic diagram of the left and right overlap of the Z-shaped folded edge between the waterproof boards disclosed in the embodiments of this utility model; Figure 12 for Figure 11 Enlarged structural diagram at point E; Figure 13 This is a structural schematic diagram of the prefabricated substation disclosed in an embodiment of this utility model.

[0019] In the diagram, the labels are: 100 - Top cover structure of the transformer substation; 200 - Transformer substation; 300 - Main frame of the transformer substation; 1-External waterproof layer; 101-Longitudinal ventilation and protection plate; 102-Ridge plate; 103-Top plate; 104-Transverse ventilation and protection plate; 105-Intermediate transverse ventilation support beam; 106-Side transverse ventilation support beam; 107-Bridge-type ventilation hole; 108-Water passage hole; 109-Main drip edge; 2-Inner waterproof layer; 201-Front waterproof membrane; 202-Longitudinal beam; 203-Rear waterproof membrane; 204-Hinge-shaped ventilation support beam; 205-Transverse beam; 206-Z-type fixing bracket; 207-Secondary drip edge. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] The purpose of this utility model is to provide a novel top cover structure for a prefabricated substation and a prefabricated substation, in order to solve the technical problems of existing prefabricated substations, such as easy water ingress, easy dampness, and easy to cause instantaneous risks such as short circuit faults and insulation breakdown of internal electrical equipment.

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1 like Figures 1-12As shown, this embodiment proposes a novel transformer substation top cover structure 100, including an outer waterproof layer 1 and an inner waterproof layer 2 disposed below and inside the outer waterproof layer 1. The outer waterproof layer 1 and the inner waterproof layer 2 cooperate to form an assembled double-layer top cover structure. An air cavity is formed between the outer waterproof layer 1 and the inner waterproof layer 2 to enhance the heat insulation function of the transformer substation top cover structure 100. The top cover structure has an inverted V-shaped structure with the pointed end facing upward along the longitudinal direction of the transformer substation, that is, any transverse section of the top cover structure is an inverted V-shape, so that the front and rear of the top cover structure have roof slopes. Here, "longitudinal" is defined as the front-to-back direction of the transformer substation, and "transverse" is defined as the left-to-right direction of the transformer substation.

[0024] In some feasible implementations, the external waterproof layer 1 preferably adopts an assembled structure, which avoids the need to replace the entire external waterproof layer 1 due to partial damage to the outer layer of the roof, thus reducing the maintenance, repair, and replacement costs of the external waterproof layer 1. Specifically, the aforementioned external waterproof layer 1 includes a longitudinal ventilation protection plate 101, a ridge plate 102, a top plate 103, and a transverse ventilation protection plate 104. Two sets of longitudinal ventilation protection plates 101 and transverse ventilation protection plates 104 are symmetrically arranged, such as... Figure 1 and Figure 2 As shown, two sets of longitudinal ventilation protection plates 101 and two sets of transverse ventilation protection plates 104 are assembled by bolts to form a rectangular frame of the outer waterproof layer 1, and the top surface of the longitudinal ventilation protection plate 101 has a downward sloping front and rear slope (consistent with the slope of the subsequent top plate 103); the front and rear of the outer waterproof layer 1 are provided with an outer top cover plate assembled by the top plate 103 in the transverse direction.

[0025] In some feasible implementations, preferably, any two adjacent top plates 103 in the front and rear outer top cover plates are overlapped by a "V" shaped interlocking structure to achieve a sealed assembly. This effectively prevents rainwater from penetrating the outer waterproof layer 1 through the splicing position between the top plates 103 (which is arranged along the front-to-back direction of the top cover). In the front and rear outer top cover plates, the two top plates 103 located at the transverse ends are respectively sealed and spliced ​​with two longitudinal ventilation and protective plates 101. At the same time, the bottom edges of the front and rear outer top cover plates are respectively sealed and spliced ​​with two sets of transverse ventilation and protective plates 104. Based on the above structure, a sealed water-guiding slope is constructed from the middle to the front and rear sides to ensure that rainwater flows away along the slope.

[0026] In the front and rear outer roof panels, the top panels 103 are aligned front to back and correspond one-to-one, and the tops of the two outer roof panels arranged in the front and rear are sealed together to form a horizontally extending splice seam. After the top panels 103 are spliced, the ridge panel 102 is overlapped horizontally on the splice seam to achieve a secondary seal by covering the splice seam; moreover, the ridge panel 102 is centered on the splice seam of the front and rear top panels 103, and the overlap at both ends is extended by a certain distance to ensure that even in severe weather, rainwater will not enter the interior of the box-type substation through the splice seam, thus preventing rainwater from entering the inner waterproof layer 2 from the splice seam.

[0027] In some feasible implementations, it is preferable to install a dustproof mesh below the splice seam to prevent dust from entering through the splice seam of the front and rear top plates 103.

[0028] In some feasible implementations, it is preferable that dustproof mesh is also provided on the inner side of the splicing position between any two adjacent left and right top plates 103 to prevent dust from entering through the splicing position between the left and right top plates 103.

[0029] like Figure 1 As shown, preferably, both the longitudinal ventilation protection plate 101 and the transverse ventilation protection plate 104 are L-shaped protection plates with right-angled cross-sections, and the vertical plates of the L-shaped protection plates are closed, while the horizontal plates are provided with bridge-type ventilation holes 107 and water passage holes 108. Figure 1 As shown, circular water passage holes 108 are arranged at both ends of the horizontal plates of any longitudinal ventilation protection plate 101 and any transverse ventilation protection plate 104, and several bridge-type ventilation holes 107 are evenly distributed between the water passage holes 108 at both ends. In the transverse ventilation protection plate 104, the side of the horizontal plate away from the vertical plate is also bent upward to form an installation vertical plate. The height of the installation vertical plate is lower than that of the vertical plate, and it is mainly used for the subsequent installation and fixing of the transverse beam 205. Correspondingly, in the longitudinal ventilation protection plate 101, the side of the horizontal plate away from the vertical plate is also bent upward to form an installation vertical plate. The height of the installation vertical plate is lower than that of the vertical plate, and it is mainly used for the subsequent installation and fixing of the longitudinal beam 202.

[0030] After the outer waterproof layer 1 is assembled, the top surface and side walls are sealed panels with high waterproof performance.

[0031] In some feasible implementations, it is preferable that any adjacent components in the outer waterproof layer 1 are reinforced and assembled using waterproof bolts. Specifically, bolt fixing holes are provided on the ridge plate 102, the longitudinal ventilation and protection plate 101, the transverse ventilation and protection plate 104, and any one of the top plates 103. Figure 1As shown, each top plate 103 is rectangular, and the overlap between each top plate 103 and the longitudinal ventilation protection plate 101 and the transverse ventilation protection plate 104 is designed with folded edges. The folded edges of the top plate 103 face upwards and are pressed under the longitudinal ventilation protection plate 101 and the transverse ventilation protection plate 104, and then fixed with waterproof bolts. This structure can effectively prevent water from accumulating on the top cover and seeping downwards along the bolt fixing holes.

[0032] In some feasible implementations, it is preferable to use a "V" interlocking structure to splice any two adjacent top plates 103, and then fasten them to the Z-shaped fixing bracket 26 of the inner waterproof layer 2 with waterproof bolts to form a solid secondary seal.

[0033] In some feasible embodiments, preferably, the front edge of any one of the front outer top cover plates 103 is provided with a main drip edge 109 extending beyond the transverse ventilation and protection plate 104; simultaneously, the rear edge of any one of the rear outer top cover plates 103 is provided with a main drip edge 109 extending beyond the transverse ventilation and protection plate 104. The outer waterproof layer 1 has transverse main drip edges 109 formed on both the front and rear sides, which can guide rainwater to drip directly and prevent rainwater from flowing back along the surface of the transverse ventilation and protection plate 104.

[0034] After the outer waterproof layer 1 is assembled, the top surface and side walls are sealed panels with high waterproof performance.

[0035] like Figure 1 and Figure 8 As shown, the inner waterproof layer 2 is a functional unit integrating structural support and waterproofing, mainly composed of a front waterproofing plate 201, longitudinal beams 202, a rear waterproofing plate 203, transverse beams 205, herringbone ventilation support beams 204, and Z-shaped fixing brackets 206. Two sets of longitudinal beams 202 and transverse beams 205 are symmetrically arranged. The two sets of opposing longitudinal beams 202 and the two sets of opposing transverse beams 205 are assembled with bolts to form the rectangular beam frame of the inner waterproof layer 2. Multiple herringbone ventilation support beams 204 are evenly distributed along the transverse intervals of this rectangular beam frame. Each herringbone ventilation support beam 204 is parallel to the longitudinal direction of the rectangular beam frame. The herringbone ventilation support beams 204, longitudinal beams 202, and transverse beams 205 constitute the core load-bearing frame of the inner waterproof layer 2. The core load-bearing frame is located within the rectangular frame of the aforementioned outer waterproof layer 1, and the two longitudinal beams 202 are respectively fixed to the mounting vertical plates of the two longitudinal ventilation and protection plates 101 by bolts, and the two transverse beams 205 are respectively fixed to the mounting vertical plates of the two transverse ventilation and protection plates 104 by bolts.

[0036] The inner waterproof layer 2 is provided with an inner front top cover plate, which is composed of several front waterproof panels 201 assembled laterally. Correspondingly, the inner waterproof layer 2 is provided with an inner rear top cover plate, which is composed of several rear waterproof panels 203 assembled laterally. Any two adjacent front waterproof panels 201 and any two adjacent rear waterproof panels 203 are joined and sealed in a Z-shaped structure. The inner front top cover plate and the inner rear top cover plate are fixed to each herringbone ventilation support beam 204 by waterproof bolts. The key to this structure is that the front edge of the installed inner front top cover plate (i.e., the front edge of any front waterproof panel 201) and the rear edge of the inner rear top cover plate (i.e., the rear edge of any rear waterproof panel 203) will form a secondary drip edge 207 extending beyond the end of the herringbone ventilation support beam 204. This design ensures that any infiltrated rainwater is guided along the surfaces of the front and rear waterproofing plates to the ventilation plate of the outer waterproofing layer 1, and finally discharged to the outside of the transformer substation through the bridge-type ventilation hole 107 and the water passage hole 108, thereby effectively preventing rainwater from entering the interior of the transformer substation housing.

[0037] In some feasible implementations, in order to ensure the supporting strength of the aforementioned core load-bearing frame, it is preferable to also fix an intermediate transverse beam between the two longitudinal beams 202.

[0038] In some feasible embodiments, Z-shaped fixing brackets 206 are preferably provided between any adjacent front waterproof panels 201 and between any adjacent rear waterproof panels 203. The Z-shaped fixing brackets 206 are provided with fixing holes for reinforcing connection with the top plate 103.

[0039] In some feasible implementations, to enhance the support strength of the front waterproofing membrane 201 and the rear waterproofing membrane 203, it is preferable that either the front waterproofing membrane 201 or the rear waterproofing membrane 203 is further supported and connected to the corresponding transverse beam 205 by a side transverse ventilation support beam 106. Based on this, the interior of the inner waterproofing layer 2 can communicate with the transverse ventilation protection plate 104 and the outside air through the side transverse ventilation support beam 106 with ventilation holes. Both the front waterproofing membrane 201 and the rear waterproofing membrane 203 are provided with bolt fixing holes that connect to the herringbone ventilation support beam 204 and the side transverse ventilation support beam 106, so that the front waterproofing membrane 201 and the rear waterproofing membrane 203 are securely connected to the herringbone ventilation support beam 204 and the side transverse ventilation support beam 106.

[0040] In some feasible implementations, a middle transverse ventilation support beam 105 is preferably provided between the top tip of the inner waterproof layer 2 and the top tip of the outer waterproof layer 1. The middle transverse ventilation support beam 105 can support the outer waterproof layer 1 on the one hand, and ensure the air cavity connectivity between the two waterproof layers on the other hand.

[0041] In some feasible implementations, both the longitudinal beam 202 and the transverse beam 205 are provided with bolt fixing holes that connect to the main frame 300 of the transformer substation, the herringbone ventilation support beam 204, and the side transverse ventilation support beam 106, so that the longitudinal beam 202 and the transverse beam 205 are securely connected to the main frame 300 of the transformer substation, the herringbone ventilation support beam 204, and the side transverse ventilation support beam 106.

[0042] In some feasible implementations, the herringbone ventilation support beam 204 and the side transverse ventilation support beam 106 are provided with ventilation holes and bolt fixing holes for connection with the front and rear waterproof plates.

[0043] In some feasible implementations, it is preferable that dustproof mesh is welded to any ventilation hole on the side transverse ventilation support beam 106.

[0044] The front and rear waterproofing plates are fixed to the herringbone ventilation support beam 204 and the side transverse ventilation support beam 106, and are secured from top and bottom by waterproof bolts. The top of the front waterproofing plate 201 has a Z-shaped folded edge that overlaps with the rear waterproofing plate 203 and is fixed by waterproof bolts. Each right side of any front waterproofing plate 201 has a Z-shaped folded edge that seals and overlaps with the adjacent front waterproofing plate 201, and each right side of any rear waterproofing plate 203 has a Z-shaped folded edge that seals and overlaps with the adjacent rear waterproofing plate 203. Any two adjacent rear waterproofing plates 203 and any two adjacent front waterproofing plates 201 are joined and sealed by Z-shaped folded edges and secured by waterproof bolts. The aforementioned Z-shaped folded edge overlapping structure between the front and rear waterproofing plates, as well as the Z-shaped folded edge overlapping structure between adjacent waterproofing plates, effectively prevents seepage water from flowing into the transformer substation through the joints. After the front and rear waterproofing membranes are installed, in the panels assembled by the front waterproofing membrane 201: the front edge extends out to the front side transverse ventilation support beam 106 to form the front secondary drip edge 207, and the left and right edges respectively extend out to the left and right herringbone ventilation support beams 204 to form the left and right secondary drip edges 207; correspondingly, in the panels assembled by the rear waterproofing membrane 203: the rear edge extends out to the rear side transverse ventilation support beam 106 to form the rear secondary drip edge 207, and the left and right edges respectively extend out to the left and right herringbone ventilation support beams 204 to form the left and right secondary drip edges 207. Based on this, the entire outer perimeter of the inner waterproofing layer 2 is formed with a secondary drip edge 207.

[0045] When assembling the outer waterproof layer 1, first fix the top plate 103 to the transverse ventilation and protection plate 104 and the Z-shaped fixing bracket 206 with waterproof bolts. After fixing, leave a gap. Figure 3The main drip edge 109 shown allows rainwater to drip directly, preventing rainwater from flowing back through the lower edge of the transverse ventilation protection plate 104. Then, the longitudinal ventilation protection plate 101 is fixed to the roof plate 103. On the side close to the longitudinal ventilation protection plate 101, the roof plate 103 has an upward folded edge that is horizontally assembled and fixed to the longitudinal ventilation protection plate 101 with waterproof bolts, allowing rainwater to flow out along the slope of the longitudinal ventilation protection plate 101, preventing water from falling into the longitudinal ventilation protection plate 101 from the outer waterproof layer 1. Finally, the ridge plate 102 is fixed to the longitudinal ventilation protection plate 101 and the roof plate 103 with waterproof bolts, which can prevent rainwater from falling into the inner waterproof layer 2 through the overlap joints of the front and rear roof plates 103 in severe weather. A dustproof mesh is installed in the middle of the front and rear overlap joints of the roof plate 103 to prevent dust and other particles from entering the inner waterproof layer 2.

[0046] When assembling the inner waterproof layer 2, first fix the herringbone ventilation support beam 204 and the side transverse ventilation support beam 106 to the longitudinal beam 202 and the transverse beam 205 respectively with waterproof bolts. Then fix the front waterproof plate 201 and the rear waterproof plate 203 to the herringbone ventilation support beam 204 and the side transverse ventilation support beam 106. After fixing, both the front waterproof plate 201 and the rear waterproof plate 203 have secondary drip edges 207, so that the infiltrated rainwater can be introduced into the longitudinal ventilation protection plate 101 and the transverse ventilation protection plate 104 through the secondary drip edges 207.

[0047] Then, the outer waterproof layer 1 and the inner waterproof layer 2 are assembled to form a complete and hollow transformer substation top cover structure 100.

[0048] The proposed transformer substation top cover structure 100 features a waterproof system comprised of an outer waterproof layer 1 and an inner waterproof layer 2, creating a dual barrier of internal and external waterproofing. This elevates the reliability of the transformer substation's protection to a new level. Its superiority is reflected in two aspects: Firstly, even if the outer waterproof layer leaks slightly, the inner waterproof layer can effectively block it, forming a "double insurance"; Secondly, the air insulation layer between the inner and outer waterproof layers can greatly reduce heat transfer, creating an extremely stable internal operating environment for the equipment; Thirdly, the ventilation holes in the door panels and top cover of the new energy prefabricated substation are designed to facilitate heat flow during operation, thereby enabling heat dissipation and temperature rise control of the prefabricated substation.

[0049] The aforementioned transformer substation top cover structure 100 can meet the requirements of stringent temperature control or harsh outdoor working conditions such as strong sunlight, high temperature, and high humidity. Choosing a double-layer top cover is a key decision to ensure the safety and stability of precision and expensive electrical equipment and to optimize the total life cycle cost.

[0050] Example 2 like Figure 13As shown, this embodiment proposes a prefabricated substation 200, which includes a prefabricated substation main frame 300 and a prefabricated substation top cover structure 100 disclosed in Embodiment 1. The prefabricated substation top cover structure 100 is fixedly connected to the prefabricated substation main frame 300 by bolts through longitudinal beams 202 and transverse beams 205, thereby forming the prefabricated substation 200.

[0051] The 200 prefabricated substations include, but are not limited to, new energy prefabricated substations.

[0052] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0053] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A transformer substation top cover structure for installation on the top of the main frame of the transformer substation, characterized in that, It includes an outer waterproof layer and an inner waterproof layer disposed on the inner side below the outer waterproof layer. An air cavity for heat insulation is formed between the outer waterproof layer and the inner waterproof layer, and the air cavity is provided with a through hole that can connect to the outside and the inside of the transformer main frame to dissipate heat from the inside of the transformer main frame; the outer waterproof layer adopts an assembled splicing structure.

2. The transformer substation top cover structure according to claim 1, characterized in that, The external waterproof layer includes a longitudinal ventilation and protection panel, a ridge panel, a top panel, and a transverse ventilation and protection panel. Two sets of the longitudinal and transverse ventilation and protection panels are symmetrically arranged, and the two sets of longitudinal and transverse ventilation and protection panels are assembled to form a rectangular frame. The front and back of the external waterproof layer are provided with an external roof cover plate assembled laterally from the top panel. Each external roof cover plate is an inclined, sealed, and water-guiding slope, and each external roof cover plate is sealed and spliced ​​with the corresponding longitudinal and transverse ventilation and protection panels. A transverse splicing joint is formed between the two external roof cover plates at the front and back. The ridge panel is fixed above the transverse splicing joint to cover it.

3. The transformer substation top cover structure according to claim 2, characterized in that, In any of the aforementioned outer top cover plates: Any two adjacent top plates are connected by a "V" shaped interlocking structure and fixed with bolts; The two top plates located at the two transverse ends are respectively sealed and overlapped with the two longitudinal ventilation and protective plates by folded edges, and are fixed by bolts; The bottom end of any of the top plates is provided with a main drip edge that extends beyond the corresponding position of the transverse ventilation and protective plate.

4. The transformer substation top cover structure according to claim 2 or 3, characterized in that, The transverse seams are equipped with dustproof mesh to prevent dust from entering.

5. The transformer substation top cover structure according to claim 2 or 3, characterized in that, Both the longitudinal ventilation protection plate and the transverse ventilation protection plate are L-shaped protection plates with a right-angle cross-section, and the vertical plate of the L-shaped protection plate is closed, while the horizontal plate is provided with bridge-type ventilation holes and water passage holes. In any one of the longitudinal ventilation protection panels and any one of the transverse ventilation protection panels, the side of the horizontal panel away from the vertical panel is bent upward to form an installation vertical panel; the inner waterproof layer is fixed to the installation vertical panel.

6. The transformer substation top cover structure according to claim 5, characterized in that, The inner waterproof layer includes a rectangular beam frame, a front waterproofing slab, a rear waterproofing slab, and a herringbone ventilation support beam, wherein: The rectangular beam frame includes two longitudinal beams and two transverse beams arranged opposite to each other. The two longitudinal beams are respectively fixed to the mounting vertical plates of the two longitudinal ventilation and protection plates; the two transverse beams are respectively fixed to the mounting vertical plates of the two transverse ventilation and protection plates. Multiple herringbone ventilation support beams are arranged at transverse intervals along the rectangular beam frame, and any one of the herringbone ventilation support beams is parallel to the longitudinal direction of the rectangular beam frame. Several of the aforementioned front waterproof panels are assembled laterally to form an inner front top cover and fixed to the front of each of the aforementioned herringbone ventilation support beams; several of the aforementioned rear waterproof panels are assembled laterally to form an inner rear top cover and fixed to the rear of each of the aforementioned herringbone ventilation support beams; The bottom ends of both the inner front top cover and the inner rear top cover are provided with secondary drip edges that extend beyond the corresponding transverse beams. Both the inner front top cover and the inner rear top cover are provided with secondary drip edges extending beyond the two outermost herringbone ventilation support beams at their lateral ends.

7. The transformer substation top cover structure according to claim 6, characterized in that, A side transverse ventilation support beam is also provided between any of the front waterproofing panels, any of the rear waterproofing panels and the corresponding transverse beam; a middle transverse ventilation support beam is also provided between the tip of the outer waterproofing layer and the tip of the inner waterproofing layer.

8. The transformer substation top cover structure according to claim 7, characterized in that, Dustproof mesh is provided at any of the bridge-type ventilation holes, any of the water passage holes, any of the ventilation holes on the side transverse ventilation support beams, and any of the ventilation holes on the middle transverse ventilation support beams.

9. The transformer substation top cover structure according to claim 6, characterized in that, The top of any of the aforementioned front waterproofing panels is provided with a Z-shaped folded edge that overlaps with the corresponding rear waterproofing panel and is fixed by bolts; Each of the front waterproof panels has a Z-shaped folded edge on its right side that seals and overlaps with the adjacent front waterproof panel, and each of the rear waterproof panels has a Z-shaped folded edge on its right side that seals and overlaps with the adjacent rear waterproof panel. Any adjacent rear waterproof panels and any adjacent front waterproof panels are connected by the left and right overlaps of the Z-shaped folded edge and fixed with bolts. Z-shaped fixing brackets are provided between any two adjacent front waterproof panels and between any two adjacent rear waterproof panels; the outer top cover is fixed to the top of the Z-shaped fixing brackets by bolts.

10. A prefabricated substation, characterized in that, The transformer includes a main frame and a transformer top cover structure as described in any one of claims 1 to 9, wherein the transformer top cover structure is installed on the top of the main frame.

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