Box-type substation and box body thereof

Abstract

The utility model provides a box body of a box-type substation, and relates to the technical field of box-type substations. The box body comprises a door frame and a door plate externally buckled on the door frame, in the thickness direction of the door plate, the projection area of the door plate covers the projection area of a frame opening defined by the door frame, a buckling structure used for being buckled with the door plate in a closed state is arranged on the periphery of the frame opening, and an elastic sealing piece for sealing the buckling position is installed on the buckling structure. The utility model also provides a box-type substation which comprises the box body. An embedded door is changed into an externally-buckled door, the elastic sealing piece is fixedly arranged on a buckling structure located at the front end of the door frame, and the door plate is externally buckled on the door frame in a closed state and extrudes the elastic sealing piece to achieve sealing of the box door. The elastic sealing piece does not move along with the door plate and is not easy to move, so that the situation that the sealing fails or the door plate cannot be normally used due to deformation of the side wall and the door plate and displacement of the elastic sealing piece is avoided, and the deformation resistance and the sealing reliability of the box door are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of prefabricated substations, and in particular relates to a prefabricated substation and its enclosure. Background Technology

[0002] With the development of new energy industries such as solar and wind power, and the expansion of new energy power plants, the demand for supporting prefabricated substations for new energy power generation systems has increased significantly. Furthermore, due to the generally harsh environments in which new energy power plants are located, prefabricated substations must not only ensure electrical performance but also optimize and improve the strength and sealing of their enclosures. Otherwise, dust, sand, rainwater, and moisture will enter the enclosure, affecting the heat dissipation and insulation performance of electrical components, or causing malfunctions such as moisture damage and short circuits in electrical equipment.

[0003] Most existing prefabricated substation enclosures use recessed doors. The enclosure consists of a door frame formed by a door lintel, a threshold, and two side panels. The recessed door includes a door panel that fits into the door frame with its outer surface flush with the frame. The door panel is hinged to one side panel of the door frame. In this way, the door panel achieves a seal by fitting into the door frame. Some recessed doors also have additional sealing strips on the door panel to enhance the seal with the door frame.

[0004] The sealing structure of the above-mentioned cabinet door has the following drawbacks: First, the side panels and door of the cabinet are easily deformed by external impacts (such as strong winds), which can lead to the failure of the seal between the door panel and the side panel or even the inability to open and close the door panel normally; Second, the door panel is prone to wear when frequently opened or subjected to vibration, and the added sealing strip on the door panel is also prone to displacement, which can lead to an increase in the gap between the door panel and the side panel, ultimately resulting in the failure of the seal. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated substation enclosure to solve the technical problems of unreliable door sealing structure and poor impact resistance of side panels and door panels in existing substation enclosures. It also provides a prefabricated substation to solve the same technical problems.

[0006] To achieve the above objectives, the technical solution for the enclosure of the prefabricated substation provided by this utility model is as follows:

[0007] A box-type substation enclosure includes a door frame and a door panel that is fastened to the door frame. Along the thickness direction of the door panel, the projected area of ​​the door panel covers the projected area of ​​the frame opening formed by the door frame. The frame opening is provided with a fastening structure for fastening with the door panel in the closed state. An elastic sealing element for sealing the fastening position is installed on the fastening structure.

[0008] This utility model is a pioneering invention, and its beneficial effects are as follows: On the one hand, by changing the embedded cabinet door to an external snap-on cabinet door, when the door panel is impacted, the snap-on structure of the door frame can support the door panel. The elastic seal on the snap-on structure can effectively disperse and buffer the impact force during the transmission of impact, so that the door panel and the door frame are subjected to force as a whole, reducing the possibility of deformation of the door panel and the frame opening; on the other hand, the elastic seal is connected to the front surface of the door frame through the snap-on structure. When the door panel is closed, it snaps onto the door frame and squeezes the elastic seal to achieve the sealing of the cabinet door. The elastic seal will not move with the door panel and is not easy to shift, avoiding the situation of sealing failure or door panel not being able to be used normally due to side deformation, door panel deformation and elastic seal displacement.

[0009] As a further improvement, the door frame is composed of two side panels, a door lintel, and a door sill, and the interlocking structure is composed of the outward-turned edges of the side panels, door lintel, and door sill.

[0010] As a further improvement, each outer flange is formed by two bends, and the flange formed by the two bends constitutes a groove with the opening facing away from the frame opening, and the elastic seal is installed at the groove.

[0011] As a further improvement, connecting brackets are installed at each corner of the door frame.

[0012] As a further improvement, the connecting bracket is attached to the side of the door frame away from the door panel.

[0013] As a further improvement, the connecting bracket is provided with a support portion extending toward the door panel. The support portion includes a horizontal support section, a vertical support section, and a connecting section that connects the horizontal support section and the vertical support section. The horizontal support section and the vertical support section respectively support the two sides at the corner of the door frame.

[0014] As a further improvement, the connecting segment is a triangular structure.

[0015] As a further improvement, the outer surface of the connecting section facing the door panel is flush with the outer surface of the fastening structure, so as to support the door panel in the closed state together with the fastening structure.

[0016] As a further improvement, multiple hinge mounting seats are connected to the outer surface of the side panel facing the door panel in a vertically distributed manner, and each hinge mounting seat is connected to the door panel by a hinge.

[0017] To achieve the above objectives, the technical solution for the prefabricated substation provided by this utility model is as follows:

[0018] A prefabricated substation includes a box enclosure and high-voltage switchgear, a distribution transformer, and a low-voltage distribution device connected inside the box enclosure. The box enclosure includes a door frame and a door panel that is fastened to the door frame. Along the thickness direction of the door panel, the projected area of ​​the door panel covers the projected area of ​​the frame opening formed by the door frame. The frame opening is provided with a fastening structure for fastening with the door panel in the closed state. An elastic sealing element for sealing the fastening position is installed on the fastening structure.

[0019] This utility model is an improved invention, and its beneficial effects are as follows: By changing the embedded door to an external snap-on door, when the door panel is impacted, the snap-on structure of the door frame can support the door panel. The elastic seal on the snap-on structure can effectively disperse and buffer the impact force during the transmission of impact, so that the door panel and the door frame are stressed as a whole, reducing the possibility of deformation of the door panel and the frame opening. The elastic seal is connected to the front surface of the door frame through the snap-on structure. When the door panel is closed, it snaps onto the door frame and squeezes the elastic seal to achieve the sealing of the door. The elastic seal will not move with the door panel and is not easy to shift, avoiding the situation of sealing failure or door panel malfunction caused by side deformation and elastic seal displacement. By improving the door sealing structure of the cabinet, the sealing reliability of the door is improved, thereby preventing dust, sand, rainwater and moisture from entering the cabinet and affecting the heat dissipation and insulation performance of electrical components, and avoiding electrical equipment failures such as moisture and short circuits.

[0020] As a further improvement, the door frame is composed of two side panels, a door lintel, and a door sill, and the interlocking structure is composed of the outward-turned edges of the side panels, door lintel, and door sill.

[0021] As a further improvement, each outer flange is formed by two bends, and the flange formed by the two bends constitutes a groove with the opening facing away from the frame opening, and the elastic seal is installed at the groove.

[0022] As a further improvement, connecting brackets are installed at each corner of the door frame.

[0023] As a further improvement, the connecting bracket is attached to the side of the door frame away from the door panel.

[0024] As a further improvement, the connecting bracket is provided with a support portion extending toward the door panel. The support portion includes a horizontal support section, a vertical support section, and a connecting section that connects the horizontal support section and the vertical support section. The horizontal support section and the vertical support section respectively support the two sides at the corner of the door frame.

[0025] As a further improvement, the connecting segment is a triangular structure.

[0026] As a further improvement, the outer surface of the connecting section facing the door panel is flush with the outer surface of the fastening structure, so as to support the door panel in the closed state together with the fastening structure.

[0027] As a further improvement, multiple hinge mounting seats are connected to the outer surface of the side panel facing the door panel in a vertically distributed manner, and each hinge mounting seat is connected to the door panel by a hinge. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the box-type substation of this utility model;

[0029] Figure 2 This is a partial front view of the box-type substation of this utility model with the door panel closed;

[0030] Figure 3 This is a schematic diagram of the upper half of the door frame of the box-type substation of this utility model.

[0031] Figure 4 This is a schematic diagram of the upper left corner of the door frame of the box-type substation of this utility model;

[0032] Figure 5 This is a structural schematic diagram of the upper right corner of the door frame of the box-type substation of this utility model;

[0033] Figure 6 This is a schematic diagram of the back structure of the upper left corner of the door frame of the box-type substation of this utility model;

[0034] Figure 7 This is a structural schematic diagram of the lower left corner of the door frame of the box-type substation of this utility model;

[0035] Figure 8 This is a top view of the box-type substation of this utility model with the door panel closed.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Door panel; 2. Side panel; 3. Door lintel; 4. Door sill; 5. Hinge; 6. Connecting bracket; 6-1. Support part; 6-1-1. Connecting section; 6-1-2. Horizontal support section; 6-1-3. Vertical support section; 7. Interlocking structure; 8. Central column; 9. Hinge mounting base. Detailed Implementation

[0038] In order to solve the technical problems in the prior art, the basic technical concept of this utility model is to change the embedded door to an external latching door, and to fix the elastic sealing element on the door frame. The closed door panel will press the elastic sealing element between the outer surface of the door frame and the inner surface of the door panel to avoid sealing failure caused by deformation of the door panel and side panels and loosening of the door panel.

[0039] The present invention will be further described in detail below with reference to the embodiments.

[0040] Specific embodiments of the enclosure of the prefabricated substation provided by this utility model:

[0041] As a basic embodiment, a prefabricated substation enclosure, such as... Figures 1-3 , Figure 8 As shown, the door includes a door frame and a door panel 1 that is fastened to the door frame. Along the thickness direction of the door panel 1, the projected area of ​​the door panel 1 covers the projected area of ​​the frame opening formed by the door frame. A fastening structure 7 is provided around the frame opening for fastening with the door panel 1 in the closed state. An elastic sealing element (not shown in the figure) is installed on the fastening structure 7 to seal the fastening position.

[0042] Specifically, the fastening structure 7 is arranged around the frame opening, and an elastic sealing element is fixedly connected to the fastening structure 7. A door panel 1 is hinged to the door frame, and the housing also includes a door lock (not shown in the figure), which is used to keep the door panel 1 closed. When the door panel 1 is in the closed state, the door panel 1 is fastened to the fastening structure 7 of the door frame, and the elastic sealing element is pressed between the inner surface of the door panel 1 and the outer surface of the door frame to achieve a seal at the fastening position between the door panel 1 and the door frame.

[0043] Compared to the embedded doors of existing technologies, in this embodiment, the door panel 1 is externally fastened to the door frame. When the door panel 1 is impacted, the fastening structure 7 of the door frame can support the door panel 1. The elastic seal on the fastening structure 7 can effectively disperse and buffer the impact force during the transmission of the impact, so that the door panel 1 and the door frame are subjected to force as a whole, reducing the possibility of deformation of the door panel 1 and the frame opening.

[0044] Moreover, compared to the existing technology that places the sealing strip in the gap between the door panel 1 and the door frame, the elastic seal in this embodiment is placed on the front surface of the door frame. When the door panel 1 is closed, it is pressed against the door frame and squeezes the elastic seal to achieve the sealing of the door. The elastic seal does not move with the door panel 1 and is not easy to shift, thus avoiding the situation where the seal fails or the door panel 1 cannot be used normally due to the deformation of the side panel 2, the deformation of the door panel 1 and the displacement of the elastic seal.

[0045] Preferably, in this embodiment, the elastic seal is a complete annular sealing strip. The portion of the sealing strip near the frame opening is fitted onto the fastening structure 7, and the portion of the sealing strip away from the frame opening abuts against the inner surface of the door panel 1 in the closed state. In other embodiments, the elastic seal may be an annular seal made of one or more strip-shaped rubber strips spliced ​​together, and the rubber strips may be fixed to the fastening structure 7 by means of screws or adhesive.

[0046] Preferably, the door panel 1 in this embodiment is provided with reinforcing ribs to increase the strength of the door panel 1 and thereby improve its resistance to deformation. Specifically, the reinforcing ribs can be formed by stamping on the door panel 1. In other embodiments, it is not excluded to connect reinforcing plates to the door panel 1 to increase its strength, and the connection method may include welding or bolting.

[0047] Based on the above embodiments, as a preferred embodiment, to simplify the door frame structure, the door frame is composed of two side panels 2, a door beam 3, and a threshold 4. The fastening structure 7 is composed of the outward-curved edges of the side panels 2, door beam 3, and threshold 4. Specifically, the two side panels 2, door beam 3, and threshold 4 are all sheet metal parts with anti-corrosion coatings. The door beam 3 and threshold 4 are fixedly connected to the upper and lower ends of the two side panels 2, respectively, and are perpendicular to the two side panels 2. The two side panels 2, door beam 3, and threshold 4 are bent towards the direction of the door panel 1 to form outward-curved edges. At this time, the fastening structure 7 is a ring of outward-protruding mounting plates formed by the four outward-curved edges on the door frame, and the elastic seal is directly sleeved on the mounting plate. One of the side panels 2 is hinged to the door panel 1, and the door panel 1 in the closed state abuts against the elastic seal at the sealing fastening position.

[0048] In other embodiments, the door frame may be a monolithic structure. For example, it may be made by machining the frame opening from a single piece of board, and then turning the four sides of the frame opening outwards to form the interlocking structure 7. The interlocking structure 7 may also use a separate annular component that matches the contour of the frame opening, and the component is fixedly connected to the outer periphery of the frame opening by welding, bolting, or other means. It is easy to understand that a modular door frame is easier to manufacture. Furthermore, the interlocking structure 7, being integrally formed with all other parts, has higher strength and is also easier to manufacture.

[0049] Based on the above preferred embodiments, as a more preferred embodiment, such as... Figures 3-5 , Figure 7 As shown, each outward flange is formed by two bends. The two bends form a groove with the opening facing away from the frame opening, and the elastic seal is installed in the groove. Specifically, the two side panels 2, the door beam 3, and the threshold 4 are bent twice, one towards the door panel 1 and the other away from the frame opening, to form L-shaped flanges. The elastic seal is fixedly connected to the groove formed by the L-shaped flanges to prevent the elastic seal from falling off. At the same time, the second bend increases the contact area between the fastening structure 7 and the door panel 1, improving the resistance to deformation.

[0050] For large prefabricated substations, such as Figure 1 and Figure 2As shown, the enclosure has a double-door structure, meaning it has two door panels 1. The two door frames corresponding to the two door panels 1 can share a central support column 8. That is, the central support column 8 serves as both the right side of the left door frame and the left side of the right door frame. The central support column 8 has outwardly flanged fastening structures 7 that form the left and right door frames, respectively. The left door panel fastens to the left door frame using the fastening structure, and the right door panel fastens to the right door frame using the fastening structure, both abutting against the elastic sealing element at the sealing engagement position.

[0051] To facilitate the installation and removal of the door frame, such as Figure 6 As shown, the side panel 2 is connected to the door lintel 3, and the side panel 2 is connected to the threshold 4, all by bolts. At the connection points between the side panel 2 and the door lintel 3, and between the side panel 2 and the threshold 4, flanges are provided, bending away from the door panel 1. Through holes for bolt connections are provided on the flanges of the side panel 2, door lintel 3, and threshold 4. Compared to the welding connection methods used in the prior art between the side panel 2 and the door lintel 3, and between the side panel 2 and the threshold 4, this method simplifies the manufacturing and assembly process, and facilitates the installation and disassembly of the door frame and the elastic seals.

[0052] To enhance the airtightness of the enclosure, sealant is applied or sealing gaskets are installed on the connection surfaces of the side panel 2 and the door beam 3, as well as the connection surfaces of the side panel 2 and the door sill 4, to prevent moisture, dust, and other contaminants from entering.

[0053] Based on any of the above embodiments, as a preferred embodiment, such as Figures 3-7 As shown, to improve the deformation resistance of the door frame, connecting brackets 6 are provided at each corner of the door frame. In this embodiment, the frame opening formed by the door frame is rectangular, and the connecting brackets 6 are located at the four corners of the rectangle, connecting the four sides of the rectangle into a whole frame to distribute the stress on the side panels 2 and enhance the overall stability of the door frame. In other embodiments, the frame opening may have other shapes. For example, the frame opening may be based on the notch shape of this embodiment, with chamfered polygons provided at the four corners of the rectangle to form support at each corner of the door frame, thereby improving the deformation resistance of the side panels 2.

[0054] Based on the above embodiments, as a preferred embodiment, such as... Figure 6 As shown, the connecting bracket 6 is connected to the side of the door frame away from the door panel 1. Specifically, the connecting bracket 6 is connected to the back of the door frame, increasing the thickness of the door frame. This enhances both the frontal impact force exerted by the door panel 1 on the door frame and the ability of the side panels 2 of the door frame to withstand lateral impacts. The back of the door frame also facilitates the connection between the connecting bracket 6 and the door frame, increasing the contact area between the connecting bracket 6 and the back of the door frame, and significantly improving the connection strength at the corners of the door frame. In other embodiments, the connecting bracket 6 may be connected within the included angle at the corners of the door frame.

[0055] Based on the above embodiments, as a preferred embodiment, such as... Figure 6 As shown, the connecting bracket 6 has a support portion 6-1 extending towards the door panel 1. The support portion 6-1 includes a horizontal support section 6-1-2, a vertical support section 6-1-3, and a connecting section 6-1-1 connecting the horizontal support section 6-1-2 and the vertical support section 6-1-3. The horizontal support section 6-1-2 and the vertical support section 6-1-3 support the two sides of the corner of the door frame, respectively. Specifically, the two sides of the connecting section 6-1-1 located at the corner of the door frame are bent away from the door panel 1 to form the horizontal support section 6-1-2 and the vertical support section 6-1-3. The horizontal support section 6-1-2 and the vertical support section 6-1-3 support the door frame in the horizontal and vertical directions, respectively. The horizontal support section 6-1-2 and the vertical support section 6-1-3 are bent a second time at a position flush with the back surface of the door frame, and the connecting bracket 6 is connected to the back surface of the door frame through the flange of the second bend. Among them, the support part 6-1 is used to support the corner of the door frame, and the double-bent flange is used for connection, which greatly improves the connection strength at the corner of the door frame.

[0056] In other embodiments, the connecting bracket 6 may be directly connected to both sides of the door frame corner via the horizontal support section 6-1-2 and the vertical support section 6-1-3 to support the door frame corner; it may also be directly connected to both ends of the door frame corner via the connecting section 6-1-1 on the side of the door frame away from the door panel 1.

[0057] Based on the above embodiments, as a preferred embodiment, such as... Figures 3-7 As shown, the connecting segment 6-1-1 has a triangular structure. Specifically, the connecting segment 6-1-1 is used to support the corners of the door frame. A triangle is the most stable shape, ensuring that the corners of the door frame are stably supported. In other embodiments, the connecting segment 6-1-1 may be a rectangle, a square, or other shapes, as long as it can support the corners of the door frame.

[0058] Based on the above embodiments, as a preferred embodiment, such as... Figures 3-7 As shown, the outer surface of the connecting section 6-1-1 facing the door panel 1 is flush with the outer surface of the fastening structure 7, so as to jointly support the door panel 1 in the closed state. Specifically, when the depth of the support section 6-1 extending toward the door panel 1 is equal to the height of the fastening structure folding outward toward the door panel 1, the outer surface of the connecting section 6-1-1 remains basically flush with the outer surface of the fastening structure 7. When the door panel 1 is subjected to a positive impact, the connecting section 6-1-1 can increase the contact area between the door frame and the door panel 1, thereby enhancing the deformation resistance of the door panel 1. In other embodiments, it is possible that the depth of the support section 6-1 extending toward the door panel 1 is less than the height of the fastening structure folding outward toward the door panel 1.

[0059] Based on any of the above embodiments, as a preferred embodiment, such as Figure 3 , Figure 7 , Figure 8 As shown, to facilitate the installation of the door panel 1, multiple hinge mounting seats 9 are vertically distributed on the outer surface of the side panel 2 facing the door panel 1. Each hinge mounting seat 9 and the door panel 1 are connected by a hinge 5. Specifically, three sets of mounting holes are opened at corresponding positions on the door frame and the door panel 1. The hinges of the door frame and the door panel 1 are achieved by connecting the hinge mounting seats 9 and the hinges 5 through the mounting holes. The hinge mounting seats 9 avoid opening mounting grooves for the hinges 5 on the side panel 2, which not only facilitates the installation of the door panel 1, but also makes it easier to keep the inner surface of the door panel 1 parallel to the outer surface of the door frame, so as to ensure uniform compression of the elastic seal by the door panel 1 when closed. In other embodiments, the side panel 2 and the door panel 1 can be directly connected by selecting the hinge 5, for example, a hinge-type hinge can be used to ensure the connection strength between the door panel 1 and the side panel 2.

[0060] Specific embodiments of the prefabricated substation provided by this utility model:

[0061] A prefabricated substation includes a prefabricated enclosure and high-voltage switchgear, a distribution transformer, and low-voltage distribution equipment connected inside the enclosure. The structure of the enclosure is the same as that of the prefabricated substation described above, and will not be repeated here.

[0062] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cabinet of a box-type substation, characterized by, It includes a door frame and a door panel that is fastened to the door frame. Along the thickness direction of the door panel, the projected area of ​​the door panel covers the projected area of ​​the frame opening formed by the door frame. The frame opening is provided with a fastening structure for fastening with the door panel in the closed state. An elastic sealing element for sealing the fastening position is installed on the fastening structure.

2. The enclosure of the box-type substation according to claim 1, characterized in that, The door frame is composed of two side panels, a lintel, and a threshold. The interlocking structure is formed by the outward-turned edges of the side panels, lintel, and threshold.

3. The enclosure of the box-type substation according to claim 2, characterized in that, Each outward flange is formed by two bends, and the flange formed by the two bends forms a groove with the opening facing away from the frame opening. The elastic seal is installed at the groove.

4. The cabinet of a cabinet substation according to any one of claims 1-3, characterized in that Connecting brackets are installed at each corner of the door frame.

5. The enclosure of the box-type substation according to claim 4, characterized in that, The connecting bracket is attached to the side of the door frame away from the door panel.

6. The enclosure of the box-type substation according to claim 5, characterized in that, The connecting bracket is provided with a support section extending toward the door panel. The support section includes a horizontal support section, a vertical support section, and a connecting section that connects the horizontal support section and the vertical support section. The horizontal support section and the vertical support section support the two sides of the corner of the door frame, respectively.

7. The enclosure of the box-type substation according to claim 6, characterized in that, The connecting segment has a triangular structure.

8. The enclosure of the box-type substation according to claim 6, characterized in that, The connecting section faces the outer surface of the door panel and is flush with the outer surface of the fastening structure, so as to support the door panel in the closed state together with the fastening structure.

9. A cabinet of a cabinet substation according to any one of claims 1-3, characterized in that Multiple hinge mounting seats are connected to the outer surface of the side panel facing the door panel in a vertical direction, and each hinge mounting seat is connected to the door panel by a hinge.

10. A box-type substation, characterized by It includes a housing and high-voltage switchgear, distribution transformer and low-voltage distribution equipment connected in the housing, wherein the housing is the housing of the prefabricated substation as described in any one of claims 1-9.

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