Anti-deformation composite frame prepackaged box-type substation

Abstract

The application discloses an anti-deformation composite frame preassembled box-type transformer substation and relates to the technical field of transformer substation equipment, aiming to solve the technical problem that the existing box-type transformer substation is easy to be deformed and damaged due to wind pressure and is difficult to balance structural strength and dynamic wind resistance, and comprises a box member and a roof pressure-resistant mechanism, wherein the roof pressure-resistant mechanism comprises a self-adaptive pressure-resistant component and a driving adjustment component. The application forms a double-protection mechanism of vortex slow release and negative pressure adsorption air cushion under weak wind and strong wind conditions through the design of an inner concave slope surface, and utilizes the stress release and sealing buffer function of the annular groove, the sliding guide structure of the limiting protrusion and the limiting plate, to ensure that the cover plate maintains structural integrity and layering order during the self-adaptive process of external load. The driving adjustment component realizes the active wind resistance function of dynamically adjusting the direction of the cover plate according to the wind direction through the linkage transmission chain of the gas driving blade, the movable ring, the adjustment frame and the inserting rod, and also has the auxiliary efficiency of air exchange in the box.

Description

Technical Field

[0001] This invention relates to the field of substation equipment technology, and more specifically, to a prefabricated box-type substation with an anti-deformation composite frame. Background Technology

[0002] Currently, prefabricated box-type substations are widely used in power distribution network systems. As a complete set of power equipment, they typically integrate high-voltage switchgear, transformers, and low-voltage distribution devices into a movable steel structure box, offering advantages such as small footprint, quick installation, and suitability for harsh outdoor environments. However, during long-term outdoor operation, existing box-type substations generally employ flat or simple sloped roof structures, lacking effective capabilities to cope with complex wind conditions. When a box-type substation encounters strong winds, horizontal airflow directly impacts the roof surface, generating significant positive pressure on the windward side and negative pressure suction on the leeward side. The combined effect of these two factors produces a strong overturning moment. Specifically, when strong winds act on the roof, the airflow separates at the edge of the windward side and forms turbulence upstream of the roof, leading to a sharp increase in the local wind pressure coefficient. After passing over the roof, the airflow forms large-scale vortices on the leeward side, generating periodic pulsating negative pressure. This negative pressure exerts an upward suction effect on the roof panels, which, together with the positive pressure on the windward side, constitutes a destructive force that can cause the roof structure to warp or even overturn entirely.

[0003] Furthermore, natural wind exhibits pulsating characteristics. When the frequency of wind speed pulsation approaches the natural frequency of the roof structure, it can trigger a resonance effect, significantly amplifying the vibration amplitude of the cover plate. This leads to loosening of connecting bolts, weld cracking, and peeling of the coating on the cover plate surface, accelerating fatigue damage to the roof structure and severely affecting the service life and operational safety of the prefabricated substation. Therefore, we propose a deformation-resistant composite frame prefabricated prefabricated substation. Summary of the Invention

[0004] The purpose of this invention is to provide a prefabricated box-type substation with an anti-deformation composite frame, so as to solve the technical problem that existing box-type substations are susceptible to deformation and damage due to wind pressure, and it is difficult to balance structural strength and dynamic wind resistance.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a deformation-resistant composite frame prefabricated box-type substation, comprising: Box-shaped components, including a frame; A roof pressure-resistant mechanism is disposed above the frame of the box-shaped component, and the roof pressure-resistant mechanism includes an adaptive pressure-resistant component and a drive adjustment component; The adaptive pressure-resistant component includes a side frame, a crossbeam, and several cover plates. The side frame is fixedly connected to the upper surface of the frame, and the crossbeam is fixedly connected to the inside of the side frame. Several cover plates are stacked on the upper surface of the crossbeam. The cover plate at the bottom is fixedly connected to the upper surface of the side frame, and the remaining cover plates are slidably arranged. Each cover plate has a slope on its side surface. The slope is concave. The slopes on several cover plates are joined together to form a conical guide surface. The conical guide surface is used to guide rainwater from the center of the top surface to the outer edge and to adaptively guide it under the action of airflow. The drive adjustment assembly is connected to several of the cover plates, and the drive adjustment assembly includes several annular grooves, movable rings, adjustment frames, sliders, and insert rods; The movable ring drives the cover plate to rotate via the adjusting frame and the insert rod to adjust the direction of several cover plates. The slider slides along the adjusting frame and drives the cover plate connected to it to move to the initial position via the insert rod. This invention achieves adaptive protection and active control of the roof structure of the box-type substation in complex wind field environments through the coordinated cooperation of the adaptive pressure-resistant component and the drive adjustment component. The adaptive pressure-resistant component, through its concave slope design, forms a dual protection mechanism of eddy current slow release and negative pressure adsorption air cushion under weak and strong wind conditions, respectively. It also utilizes the stress release and sealing buffer function of the annular groove and the sliding guide structure of the limiting protrusion and the limiting plate to ensure that the cover plate maintains structural integrity and layered order during the autonomous adaptation of external loads. The drive adjustment component, through the linkage transmission link of gas-driven blades-movable ring-adjusting frame-insert rod, not only achieves the active wind resistance function of dynamically adjusting the direction of the cover plate according to the wind direction, but also has the auxiliary effect of ventilation and air exchange inside the box. After the external load dissipates, the cover plate can be accurately and smoothly reset to the initial state through the sliding of the slider and the damping buffer element. The organic combination of the two enables the roof compression-resistant mechanism to have both the adaptive deformation capability to passively adapt to external environmental loads and the control capability to actively intervene and adjust the direction of the cover plate, which greatly improves the overall compressive strength, structural durability and operational stability of the box-type substation under different wind speed conditions.

[0006] Preferably, except for the top cover plate, several annular grooves are formed on the inner wall of the remaining cover plates. The annular grooves are provided with air inlets and outlets. The movable ring is rotatably sleeved inside the cover plate and cooperates with the annular groove. The movable ring is used to rotate driven by gas. The adjusting frame is sleeved on the inner wall of the movable ring. The slider is slidably adapted to the inside of the adjusting frame. The insert rod is connected to the cover plate and the adjusting frame, and the insert rod is rotatably connected to the slider.

[0007] Preferably, the crossbeam is fixedly connected inside the side frame by bolts and nuts, and several cover plates are stacked in layers. The bottom cover plate is fixedly connected to the upper surface of the side frame, and the remaining cover plates are slidably arranged on the upper surface of the crossbeam, so as to maintain the stacked order and undergo adaptive deformation under the action of external environmental loads.

[0008] Preferably, each of the cover plates has a slope on its side surface, the slope being concave. The slopes on several cover plates are joined together to form a conical guide surface, which guides rainwater from the top center to the outer edge of the slope. When a weak airflow blows horizontally toward the concave slope, the slope guides and converges the airflow to form a local vortex zone, delaying the separation of the airflow on the slope surface. When a strong airflow blows horizontally toward the concave slope, the slope generates negative pressure and draws in supplementary airflow from both ends of the slope to form a boundary layer airflow conforming to the arc of the slope. When the airflow flows toward the corner of the cover plate, the airflow is split along the concave slope on both sides of the corner, which disperses the high-pressure airflow that converges at the corner.

[0009] Preferably, except for the fixedly connected cover plate, the lower surface of the other cover plates is provided with a plurality of annular grooves. The plurality of annular grooves are located at the edge corners and dead corners of the cover plates. An annular slide rail is provided on the inner wall of each annular groove. A limiting plate is rotatably fitted inside each annular groove. The limiting plate is slidably adapted to the annular slide rail. Except for the cover plate located at the top, the upper surface of the other cover plates is fixedly connected with a limiting protrusion. In two adjacent cover plates, the limiting protrusion is slidably adapted to the inside of the limiting plate. The limiting protrusion moves along the slide rail direction of the limiting plate to limit the sliding stroke and offset angle of the cover plate.

[0010] Preferably, an elastic seal is embedded in the annular groove, which provides cushioning and maintains sealing performance during the deformation of the cover plate.

[0011] Preferably, the movable ring has the blades, which extend into and slide within the annular groove. The blades divide the annular groove into a plurality of circumferentially distributed sealed chambers. Gas enters from the air inlet and flows out from the air outlet to drive the blades and the movable ring to rotate.

[0012] Preferably, the slider is provided with a circular insertion hole, and the cover plate at the top and the bottom of the several adjustment frames are all fixedly connected with the insertion rod. The insertion rod on the cover plate is rotatably sleeved inside the circular insertion hole of the adjacent slider. In two adjacent adjustment frames, the insertion rod is rotatably sleeved inside the circular insertion hole of the slider, which forms a linkage connection structure between the cover plate and the adjustment frame, so that the rotation of the movable ring is transmitted to each cover plate through the adjustment frame and the insertion rod.

[0013] Preferably, the drive adjustment assembly further includes an elastic reset element and a damping buffer element. The elastic reset element and the damping buffer element cooperate with the adjustment frame, the slider and the plug rod to allow the slider to slide along the adjustment frame and drive the cover plate connected to it to move to the initial position through the plug rod after the external load disappears, and to absorb excess energy to prevent secondary impact caused by excessively fast reset.

[0014] Preferably, the vent is connected to the interior of the housing component, and the gas flows into the interior of the housing component from the vent after passing through the annular groove, for ventilation or adjustment of the internal air pressure of the housing component.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves adaptive protection and active control of the roof structure of a prefabricated substation in complex wind conditions through the coordinated operation of an adaptive pressure-resistant component and a drive adjustment component. The adaptive pressure-resistant component, through its concave slope design, forms a dual protection mechanism of eddy current slow release and negative pressure adsorption air cushion under weak and strong wind conditions, respectively. It also utilizes the stress release and sealing buffer function of the annular groove and the sliding guide structure of the limiting protrusion and limiting plate to ensure that the cover plate maintains structural integrity and layered order during the autonomous adaptation of external loads. The drive adjustment component, through the linkage transmission link of gas-driven blades-moving ring-adjustment frame-insertion rod, not only achieves the active wind resistance function of dynamically adjusting the direction of the cover plate according to the wind direction, but also has the auxiliary effect of ventilation and air exchange inside the box. After the external load dissipates, the cover plate can be accurately and smoothly reset to the initial state through the sliding of the slider and the damping buffer element. The organic combination of the two enables the roof compression-resistant mechanism to have both the adaptive deformation capability to passively adapt to external environmental loads and the control capability to actively intervene and adjust the direction of the cover plate, which greatly improves the overall compressive strength, structural durability and operational stability of the box-type substation under different wind speed conditions.

[0016] 2. This invention achieves adaptive airflow guidance and diversion regulation by setting up several cover plates arranged in a layered and sliding manner, and splicing the concave slopes on the side surfaces of each cover plate to form a conical guide surface. Under weak wind conditions, the concave slopes form local vortex zones through guiding and converging effects, delaying airflow separation on the slope surface, reducing local wind pressure peaks on the slope, and reducing pulsating loads on the roof surface. Under strong wind conditions, the concave slopes generate a negative pressure adsorption effect, drawing in supplementary airflow from both ends of the slope to form a boundary layer airflow conforming to the slope's arc. This supplements the energy dissipation of the main airflow and delays the separation point, while also forming an air cushion effect on the slope surface, reducing the direct impact pressure peaks of strong winds on local areas of the slope. When the airflow flows towards the corner of the cover plate, the airflow is diverted and guided along the concave slopes on both sides of the corner. Strong airflow climbs obliquely along one side of the slope, while weak airflow is diverted laterally along the other side of the slope, dispersing the high-pressure airflow converging at the corner, reducing the wind pressure impact at the corner, and reducing the risk of pressure deformation at the corner of the cover plate. In addition, the annular groove on the lower surface of the cover plate, located in the dead corner, serves as a stress relief groove. It can absorb and disperse the concentrated stress generated at the edges and corners of the cover plate, preventing fatigue cracks from forming during repeated deformation. Meanwhile, the elastic seal embedded in the annular groove provides buffering and maintains sealing performance during deformation. The sliding adaptation structure of the limiting protrusion and the limiting plate constrains the sliding stroke and offset angle of the cover plate, ensuring that the stacking sequence and relative position remain stable during movement. This comprehensively improves the adaptive pressure resistance and durability reliability of the roof structure in complex wind field environments.

[0017] 3. This invention achieves precise control over the direction adjustment and position restoration of the roof cover plate through a gas-driven method. The component has an annular groove on the inner wall of the cover plate and a movable ring with blades. The blades divide the annular groove into several circumferentially distributed sealed chambers. When gas enters through the air inlet, it drives the blades to rotate, which in turn drives the adjusting frame and the connected cover plate to rotate via the movable ring. This achieves the function of dynamically adjusting the cover plate direction according to the wind direction, effectively preventing the adverse effects of airflow on the prefabricated substation. Simultaneously, the gas flows into the interior of the enclosure through the air outlet after passing through the annular groove, also providing additional functions such as ventilation or internal pressure regulation, thus achieving secondary utilization of the driving energy. By rotating and engaging the insert rod with the circular insertion hole of the slider, a linkage connection structure is formed between the cover plate and the adjusting frame. This allows the rotation of the movable ring to be accurately transmitted to each cover plate through the adjusting frame and the insert rod, enabling multiple cover plates to move synchronously or sequentially. The slider, which is fitted inside the adjusting frame, can slide along the adjusting frame during reset, and drive the cover plate connected to it to move to the initial position through the insert rod. With the help of the elastic reset element and the damping buffer element, the cover plate can smoothly and controllably return to the initial state after the external load disappears, avoiding secondary impact caused by excessively fast reset. This effectively improves the flexibility of the drive adjustment and the stability of the reset process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the roof pressure-resistant mechanism of the present invention; Figure 3 This is a three-dimensional structural diagram of the adaptive pressure-resistant component of the present invention; Figure 4 This is a schematic diagram of a three-dimensional partial structure of the adaptive pressure-resistant component of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the cover plate of the present invention; Figure 6 This is a schematic diagram of the cover plate of the present invention in a weak airflow and water flow configuration. Figure 1 ; Figure 7 This is a schematic diagram of the cover plate of the present invention in a weak airflow and water flow configuration. Figure 2 ; Figure 8 This is a schematic diagram of the cover plate of the present invention in the state of use under strong airflow and water flow. Figure 9 This is a schematic diagram of the cover plate of the present invention in the state of use under strong airflow and water flow. Figure 10 This is a schematic diagram of the cover plate's side facing the wind during use, according to the present invention. Figure 11 This is a three-dimensional structural diagram of the drive adjustment component of the present invention; Figure 12 This is a three-dimensional cross-sectional view of the drive adjustment component of the present invention.

[0019] The following are the labels in the diagram: 1. Box-shaped component; 2. Roof compression-resistant mechanism; 21. Adaptive compression-resistant component; 211. Side frame; 2111. Crossbeam; 212. Cover plate; 213. Annular groove; 214. Limiting plate; 215. Limiting protrusion; 22. Drive adjustment component; 221. Annular slide; 222. Movable ring; 2221. Adjustment frame; 223. Sliding block; 224. Insert rod. Detailed Implementation

[0020] like Figure 1 As shown, the present invention relates to a prefabricated box-type substation with an anti-deformation composite frame, comprising a box component 1.

[0021] Specifically, the box body component 1 includes a grid-shaped base welded from channel steel, a frame and its hoisting reinforcement structure, side plates made of composite plates and independent box doors with sealing members, a high-voltage chamber, a transformer chamber and a low-voltage chamber arranged in a "shape of the Chinese character mu" layout and separated by partition plates, as well as brackets, guide rails, mounting beams, wiring troughs and cable inlet / outlet holes for equipment fixation in each chamber, and further includes arc column profiles with cross insert grooves, U-shaped border profiles with lace outer eaves, and door opening profiles with T-shaped sealing member insert grooves. All components are connected by welding or corner brackets to form an integral frame, and all surfaces are subjected to anti-corrosion treatment; the box body component 1 further includes a roof pressure-resistant mechanism 2.

[0022] As Figure 2 shown, the roof pressure-resistant mechanism 2 of this embodiment includes an adaptive pressure-resistant assembly 21 and a drive adjustment assembly 22; wherein, the adaptive pressure-resistant assembly 21 is located above the frame of the box body component 1, serving as the roof component of the box-type substation. This roof component is composed of a plurality of movable splicing blocks, which can undergo adaptive deformation according to external environmental loads (such as wind load and snow load), for enhancing the overall compressive strength of the box-type substation; the drive adjustment assembly 22 includes an elastic reset element and a damping buffer element, which are used to restore the deformed roof component to the initial state after the external load disappears, and absorb excess energy through the damping element during the deformation process, so as to interfere with and optimize the motion planning of the roof component, and prevent secondary impact caused by too fast reset.

[0023] In conjunction with Figures 3-10As shown, in this embodiment, the adaptive pressure-resistant component 21 includes a side frame 211, which is fixedly connected to the upper surface of the frame. A crossbeam 2111 is fixedly connected inside the side frame 211 by bolts and nuts. Several cover plates 212 are arranged on the upper surface of the crossbeam 2111, stacked layer by layer. The bottom cover plate 212 is fixedly connected to the upper surface of the side frame 211, while the remaining cover plates 212 are slidably arranged. Each cover plate 212 has a sloped side surface. The slope at 12 is joined together to form a conical guide surface, allowing rainwater to flow out from the center of the top surface to the outer edge, preventing water accumulation on the surface of cover plate 212. The slope is concave; when a weak airflow blows horizontally towards the concave slope, the airflow flows upwards at an angle (in the direction of the main airflow). After passing the concave slope, the airflow splits; some airflow flows away from the main airflow direction, while the split airflow flows upwards at an angle according to the slope shape and merges with the main airflow, while the other part flows along the slope... The airflow is directed outward laterally. At this point, the concave slope acts as a guide and convergent force on the airflow. The diverted airflow and the main airflow form a local vortex zone above the slope. This vortex zone can delay the separation of airflow on the slope surface, reduce the peak local wind pressure, and thus reduce the pulsating load on the roof surface under weak wind conditions. When a strong airflow blows horizontally towards the concave slope, the airflow flows upward at an angle (in the direction of the main airflow). When the airflow passes over the concave slope, the concave slope experiences negative pressure. This negative pressure zone draws in supplementary airflow from both ends of the slope (i.e., the two edges along the width of the box). The drawn-in supplementary airflow mixes with the main airflow on the slope surface, forming a boundary layer airflow conforming to the slope's arc. This boundary layer airflow flows upward at an angle along the slope, supplementing the energy dissipation of the main airflow downstream and delaying the separation point between the airflow and the slope surface. It also creates an air cushion effect on the slope surface, reducing the peak direct impact pressure of strong winds on local areas of the slope. When a strong or weak airflow flows horizontally towards the cover plate 212... When the cover plate is at a corner, the airflow will split at the corner and flow along the concave slope on both sides of the corner. The strong airflow will climb upward along one side of the slope, while the weak airflow will be discharged laterally outward along the other side of the slope. This will disperse the high-pressure airflow that gathers at the corner, reduce the wind pressure impact at the corner, and reduce the risk of the cover plate corner being deformed by pressure.

[0024] In addition to the fixedly connected cover plate 212, the lower surfaces of the other cover plates 212 are provided with several annular grooves 213, and these annular grooves 213 are located in dead corners and corner areas of the cover plates 212. Each annular groove 213 has an annular slide rail on its inner wall, and a limiting plate 214 is rotatably fitted inside each annular groove 213, with the limiting plate 214 slidingly adapted to the annular slide rail. Except for the top cover plate 212, each cover plate 212 has a limiting protrusion 215 fixedly connected to its upper surface. Between two adjacent cover plates 212, the limiting protrusion 215 slides... The locating adapter is located inside the limiting plate 214. When the cover plate 212 slides due to airflow, the limiting protrusion 215 moves along the slide rail direction of the limiting plate 214 to limit the sliding stroke and offset angle of the cover plate 212, ensuring that the cover plates 212 maintain a predetermined stacking order and relative position during movement. Specifically, when affected by airflow, the sliding direction of the slidable cover plates 212 is adjusted by the drive adjustment component 22, causing the cover plates 212 to move according to the wind direction, preventing the airflow from affecting the box-type substation.

[0025] This invention achieves adaptive airflow guidance and diversion regulation by setting up several cover plates 212 in a stacked and sliding arrangement, and by splicing the concave slopes on the side surfaces of each cover plate 212 to form a conical guide surface. Under weak wind conditions, the concave slopes form local vortex zones through guiding and converging effects, delaying the separation of airflow on the slope surface, reducing the peak local wind pressure on the slope, and reducing the pulsating load on the roof surface. Under strong wind conditions, the concave slopes generate a negative pressure adsorption effect, drawing in supplementary airflow from both ends of the slope to form a boundary layer airflow that conforms to the arc of the slope. On the one hand, this supplements the energy dissipation of the main airflow and delays the separation point; on the other hand, it forms an air cushion effect on the slope surface, reducing the peak direct impact pressure of strong winds on local areas of the slope. When the airflow flows towards the corner of the cover plate 212, the airflow is diverted and guided along the concave slopes on both sides of the corner. The strong airflow climbs obliquely along one side of the slope, while the weak airflow is diverted laterally along the other side of the slope, dispersing the high-pressure airflow that converges at the corner, reducing the wind pressure impact at the corner, and reducing the risk of deformation of the corner of the cover plate 212. In addition, the annular groove 213 located in the dead corner on the lower surface of the cover plate 212 serves as a stress relief groove, which can absorb and disperse the concentrated stress generated at the edge and corner of the cover plate 212, preventing fatigue cracks from forming during repeated deformation of the cover plate 212. At the same time, the elastic seal embedded in the annular groove 213 provides buffering and maintains sealing performance during deformation. The sliding adaptation structure of the limiting protrusion 215 and the limiting plate 214 constrains the sliding stroke and offset angle of the cover plate 212, ensuring that the stacking sequence and relative position remain stable during movement, thereby comprehensively improving the adaptive pressure resistance and durability reliability of the roof structure in complex wind field environments.

[0026] Combination Figure 3 and Figures 11-12As shown, in this embodiment, the drive adjustment assembly 22 includes several annular grooves 221. Except for the top cover plate 212, the several annular grooves 221 are all formed on the inner wall of the other cover plates 212. Each annular groove 221 has an air inlet and an air outlet. Each cover plate 212 has a movable ring 222 with blades rotatably fitted inside. The blades on the movable ring 222 extend into and slide within the annular groove 221. The blades divide the annular groove 221 into several circumferentially distributed sealed chambers. When gas enters from the air inlet and flows out from the air outlet, firstly, the blades are driven by the gas pressure to rotate the movable ring 222, which in turn drives the adjustment frame 2221 and the cover plate 212 connected to it to rotate, thus adjusting the direction of the several cover plates 212; secondly, the gas flows from the air outlet... Inside the prefabricated substation, ventilation or internal air pressure adjustment is performed on the interior of the enclosure. An adjusting frame 2221 is fitted inside the inner wall of the movable ring 222. Each adjusting frame 2221 is fitted with a sliding block 223, and each sliding block 223 has a circular insertion hole. A rod 224 is fixedly connected to the bottom of the top cover plate 212 and several adjusting frames 2221. The rod 224 on the cover plate 212 rotatably fits into the circular insertion hole of the adjacent sliding block 223. In two adjacent adjusting frames 2221, the rod 224 rotatably fits into the circular insertion hole of the sliding block 223, thus forming a linkage connection structure between the cover plate 212 and the adjusting frame 2221. This allows the rotation of the movable ring 222 to be transmitted to each cover plate 212 through the adjusting frame 2221 and the rod 224, enabling multiple cover plates 212 to move synchronously or sequentially.

[0027] Specifically, when the prefabricated substation is affected by airflow, gas enters through the air inlet and flows out through the air outlet, driving the movable ring 222 to rotate and adjusting the direction of several cover plates 212. When returning to the initial state, gas enters through the air inlet and flows out through the air outlet, driving the movable ring 222 to rotate, and the slider 223 slides within the adjusting frame 2221. The slider 223 moves the cover plate 212 connected to it through the insert rod 224, causing several cover plates 212 to return to the initial state.

[0028] This invention achieves precise control over the orientation and position restoration of the roof cover plate 212 via a gas-driven method. The component features an annular groove 221 on the inner wall of the cover plate 212 and a movable ring 222 with blades. The blades divide the annular groove 221 into several circumferentially distributed sealed chambers. When gas enters through the air inlet, it drives the blades to rotate, which in turn drives the adjustment frame 2221 and the connected cover plate 212 to rotate via the movable ring 222. This enables dynamic adjustment of the cover plate 212's orientation according to wind direction, effectively preventing adverse effects of airflow on the prefabricated substation. Simultaneously, the gas flows into the interior of the enclosure through the air outlet after passing through the annular groove 221, providing additional functions such as ventilation or pressure regulation, thus achieving secondary utilization of the driving energy. The rotating fit between the insert rod 224 and the circular insertion hole of the slider 223 forms a linkage connection structure between the cover plate 212 and the adjusting frame 2221. This allows the rotation of the movable ring 222 to be accurately transmitted to each cover plate 212 through the adjusting frame 2221 and the insert rod 224, enabling multiple cover plates 212 to move synchronously or sequentially. The slider 223, which is slidably adapted inside the adjusting frame 2221, can slide along the adjusting frame 2221 during reset, and drive the cover plate 212 connected to it to move to the initial position through the insert rod 224. With the help of the elastic reset element and the damping buffer element, the cover plate 212 can smoothly and controllably return to the initial state after the external load disappears, avoiding secondary impacts caused by excessively fast reset, thereby effectively improving the flexibility of drive adjustment and the stability of the reset process.

[0029] Working Principle: This embodiment provides a prefabricated box-type substation with a deformation-resistant composite frame. During normal operation, the adaptive pressure-resistant component 21 of the roof pressure-resistant mechanism 2 forms a conical guide surface through several stacked and slidingly arranged cover plates 212, which guides and diverts airflow on the concave slope. When the box-type substation is affected by external environmental loads (such as wind loads and snow loads), the adaptive pressure-resistant component 21 first passively responds to the external loads. Under weak wind conditions, the airflow blowing horizontally toward the concave slope flows upward along the direction of inclination. After passing the concave slope, it splits. Part of the airflow flows upward along the slope shape and merges, while the other part is discharged laterally outward along the slope, forming a local vortex zone above the slope. This slows down the separation of airflow on the slope surface, reduces the local wind pressure peak on the slope, and reduces the pulsating load on the roof surface.

[0030] Under strong wind conditions, the horizontal airflow blowing towards the concave slope creates a negative pressure effect on the slope. This negative pressure zone draws in supplementary airflow from both ends of the slope, which mixes with the main airflow to form a boundary layer airflow that conforms to the arc of the slope. This boundary layer airflow, on the one hand, supplements the energy dissipation of the main airflow downstream of the slope and delays the airflow separation point; on the other hand, it forms an air cushion effect on the slope surface, reducing the peak pressure of the direct impact of strong winds on local areas of the slope. When the airflow flows towards the corner of the cover plate 212, the airflow is diverted and guided along the concave slope on both sides of the corner. The strong airflow climbs obliquely along one side of the slope, while the weak airflow is discharged laterally outward along the other side of the slope, dispersing the high-pressure airflow that converges at the corner and reducing the wind pressure impact at the corner. The above passive protection process is completed autonomously by the aerodynamic characteristics of the concave slope without the need for external energy.

[0031] Meanwhile, the annular groove 213 on the lower surface of the cover plate 212, located in a dead corner, acts as a stress relief groove to absorb and disperse concentrated stress when the cover plate 212 deforms, preventing fatigue cracks from forming in the cover plate 212 during repeated deformation. The elastic seal embedded in the annular groove 213 provides buffering and maintains sealing performance during deformation. The limiting protrusion 215 moves along the slide rail direction of the limiting plate 214 to limit the sliding stroke and offset angle of the cover plate 212, ensuring that the cover plates 212 maintain a predetermined stacking order and relative position during movement.

[0032] Based on this, when the prefabricated substation needs to actively adjust the direction of the cover plates to cope with different wind directions, the drive adjustment component 22 initiates the gas drive control process. Gas enters through the air inlet of the annular groove 221 on the inner wall of the cover plate 212, driving the rotating ring 222 with blades to rotate. The rotating ring 222 transmits power to each cover plate 212 through the linkage transmission of the adjustment frame 2221 and the insertion rod 224, causing multiple cover plates 212 to rotate synchronously or sequentially. This achieves the function of dynamically adjusting the direction of the cover plates 212 according to the real-time wind direction, thereby preventing airflow from affecting the prefabricated substation in an active control manner. The adverse effects of the power plant; at the same time, after the driving ring 222 rotates, the gas flows into the housing component 1 through the annular groove 221 from the air outlet, ventilating or regulating the internal air pressure, realizing the secondary utilization of driving energy; when the external load disappears, the slider 223 of the driving adjustment component 22 slides along the adjustment frame 2221, and drives the connected cover plate 212 to move to the initial position through the plug rod 224. With the help of the elastic reset element and the damping buffer element, the cover plate 212 is smoothly and controllably restored to the initial state, avoiding secondary impact caused by too fast reset.

[0033] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A prefabricated box-type substation with an anti-deformation composite frame, characterized in that, include: Box-shaped component (1), which includes a frame; The roof pressure-resistant mechanism (2) is located above the frame of the box member (1), and the roof pressure-resistant mechanism (2) includes an adaptive pressure-resistant component (21) and a drive adjustment component (22). The adaptive pressure-resistant component (21) includes a side frame (211), a crossbeam (2111), and several cover plates (212). The side frame (211) is fixedly connected to the upper surface of the frame, and the crossbeam (2111) is fixedly connected inside the side frame (211). Several cover plates (212) are stacked on the upper surface of the crossbeam (2111). The cover plate (212) at the bottom is fixedly connected to the upper surface of the side frame (211), and the remaining cover plates (212) are slidably arranged. Each cover plate (212) has a slope on its side surface. The slope is concave. The slopes on several cover plates (212) are joined together to form a conical guide surface. The conical guide surface is used to guide rainwater from the center of the top surface to the outer edge and adaptively guide it under the action of airflow. The drive adjustment assembly (22) is connected to several of the cover plates (212). The drive adjustment assembly (22) includes several annular grooves (221), movable rings (222), adjustment frames (2221), sliders (223), and insert rods (224). The movable ring (222) drives the cover plate (212) to rotate through the adjusting frame (2221) and the insert rod (224) to adjust the direction of the cover plate (212). The slider (223) slides along the adjusting frame (2221) and drives the cover plate (212) connected to it to move to the initial position through the insert rod (224).

2. The prefabricated box-type substation with an anti-deformation composite frame according to claim 1, characterized in that, Except for the top cover plate (212), several annular grooves (221) are formed on the inner wall of the remaining cover plates (212). An air inlet and an air outlet are arranged in the annular grooves (221). The movable ring (222) is rotatably sleeved inside the cover plate (212) and cooperates with the annular groove (221). The movable ring (222) is used to rotate driven by gas. The adjusting frame (2221) is sleeved on the inner wall of the movable ring (222). The slider (223) is slidably adapted to the adjusting frame (2221). The insert rod (224) is connected to the cover plate (212) and the adjusting frame (2221), and the insert rod (224) is rotatably connected to the slider (223).

3. The prefabricated box-type substation with an anti-deformation composite frame according to claim 2, characterized in that, The side frame (211) is fixedly connected to the crossbeam (2111) by bolts and nuts. Several cover plates (212) are stacked in layers. The bottom cover plate (212) is fixedly connected to the upper surface of the side frame (211), and the remaining cover plates (212) are slidably arranged on the upper surface of the crossbeam (2111) to maintain the stacked order and undergo adaptive deformation under the action of external environmental loads.

4. The prefabricated box-type substation with an anti-deformation composite frame according to claim 3, characterized in that, Each of the cover plates (212) has a slope on its side surface. The slope is concave. The slopes on several cover plates (212) are joined together to form a conical guide surface, which is used to guide rainwater from the top center to the outer edge of the slope. When a weak airflow blows horizontally toward the concave slope, the slope guides and converges the airflow to form a local vortex zone, delaying the separation of the airflow on the slope surface. When a strong airflow blows horizontally toward the concave slope, the slope generates negative pressure and draws in supplementary airflow from both ends of the slope to form a boundary layer airflow that conforms to the arc of the slope. When the airflow flows toward the corner of the cover plate (212), the airflow is split along the concave slope on both sides of the corner, which is used to disperse the high-pressure airflow that converges at the corner.

5. A prefabricated box-type substation with an anti-deformation composite frame according to claim 4, characterized in that, In addition to the fixedly connected cover plate (212), the lower surface of the other cover plates (212) is provided with several annular grooves (213). The several annular grooves (213) are located at the edge corners and dead corners of the cover plates (212). The inner wall of each annular groove (213) is provided with an annular slide rail. A limiting plate (214) is rotatably fitted inside each annular groove (213). The limiting plate (214) is slidably adapted to the annular slide rail. Except for the cover plate (212) located at the top, the upper surface of the other cover plates (212) is fixedly connected with a limiting protrusion (215). In two adjacent cover plates (212), the limiting protrusion (215) is slidably adapted to the inside of the limiting plate (214). The limiting protrusion (215) moves along the slide rail direction of the limiting plate (214) to limit the sliding stroke and offset angle of the cover plate (212).

6. A prefabricated box-type substation with an anti-deformation composite frame according to claim 5, characterized in that, An elastic seal is embedded in the annular groove (213), which provides cushioning and maintains sealing performance during the deformation of the cover plate (212).

7. A prefabricated box-type substation with an anti-deformation composite frame according to claim 6, characterized in that, The movable ring (222) has the blades that extend into and slide within the annular groove (221). The blades divide the annular groove (221) into several circumferentially distributed sealed chambers. Gas enters from the air inlet and flows out from the air outlet to drive the blades and the movable ring (222) to rotate.

8. A prefabricated box-type substation with an anti-deformation composite frame according to claim 7, characterized in that, The slider (223) is provided with a circular insertion hole. The cover plate (212) at the top and the bottom of several adjustment frames (2221) are all fixedly connected with the insertion rod (224). The insertion rod (224) on the cover plate (212) is rotatably sleeved inside the circular insertion hole of the adjacent slider (223). In two adjacent adjustment frames (2221), the insertion rod (224) is rotatably sleeved inside the circular insertion hole of the slider (223) to form a linkage connection structure between the cover plate (212) and the adjustment frame (2221), so that the rotation of the movable ring (222) is transmitted to each cover plate (212) through the adjustment frame (2221) and the insertion rod (224).

9. A prefabricated box-type substation with an anti-deformation composite frame according to claim 8, characterized in that, The drive adjustment assembly (22) further includes an elastic reset element and a damping buffer element. The elastic reset element and the damping buffer element cooperate with the adjustment frame (2221), the slider (223) and the plug rod (224) to allow the slider (223) to slide along the adjustment frame (2221) after the external load disappears and drive the cover plate (212) connected to it to move to the initial position through the plug rod (224), and to absorb excess energy to prevent secondary impact from being generated due to excessively fast reset.

10. A prefabricated box-type substation with an anti-deformation composite frame according to claim 9, characterized in that, The air outlet is connected to the inside of the box component (1). After passing through the annular groove (221), the gas flows into the inside of the box component (1) from the air outlet, which is used to ventilate or regulate the internal air pressure of the box component (1).

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