Anti-seismic power equipment box and box body thereof

Abstract

The application relates to the technical field of power distribution equipment, in particular to an anti-seismic power equipment box and a box thereof. The bottom surface of the box of the anti-seismic power equipment box is provided with a base damping structure for supporting on the ground, the inner bottom surface of the box is provided with two or more equipment cabinet installation areas for installing various equipment cabinets in the box, each equipment cabinet installation area is provided with a regional damping structure, at least one regional damping structure is provided with an equipment damping structure on the upside, so as to support the corresponding equipment cabinet on the regional damping structure or the equipment damping structure, the rigidity of the base damping structure is greater than that of the regional damping structure, the rigidity of the regional damping structure is greater than that of the equipment damping structure, a three-stage vibration energy step-by-step attenuation mechanism from large to small and from the whole to the local is formed, the vibration energy is fully dissipated on the transmission path, each equipment cabinet is in a safe vibration level range, and the damping effect is improved.

Description

Technical Field

[0001] This invention relates to the field of power distribution equipment technology, specifically to a seismic-resistant power equipment box and its enclosure. Background Technology

[0002] Prefabricated power equipment boxes, such as box-type substations and integrated power modules, offer advantages such as high integration, small footprint, quick installation, and easy maintenance, and are widely used in power distribution systems. With the rapid development of power systems towards modularization and integration, the enclosure of integrated power modules, as the core carrier of data center power distribution systems, directly affects the safe and stable operation of the entire system. Currently, common enclosures mainly adopt welded or bolted steel frame structures, which, while possessing certain mechanical strength and load-bearing capacity, still have shortcomings in practical applications.

[0003] In terms of seismic performance, the existing vibration reduction measures of power equipment boxes are generally relatively simple, usually using simple rubber vibration damping pads at the bottom of the box. For example, the intelligent box-type substation with vibration reduction and dust removal functions disclosed in Chinese utility model patent with authorization announcement number CN213584898U uses vibration damping blocks at the bottom of the box to support the ground to achieve vibration reduction.

[0004] However, power equipment boxes typically integrate various types of power equipment cabinets, such as high-voltage cabinets, transformers, low-voltage cabinets, compensation cabinets, and UPS cabinets. These cabinets vary significantly in weight, volume, structural rigidity, and seismic sensitivity. Large, heavy equipment cabinets, such as transformers, generate substantial inertial forces during vibrations, requiring high stability from their base support structure. Meanwhile, core equipment such as capacitor banks within compensation cabinets and precision electronic control components within UPS cabinets have even stricter requirements for seismic accuracy and vibration isolation.

[0005] Conventional vibration reduction methods in existing technologies have limited protective effects. Relying solely on vibration reduction measures between the base and the ground is insufficient to effectively ensure the seismic safety of equipment. When an earthquake or external impact vibration occurs, the vibration energy is transmitted from the foundation upwards to various areas inside the enclosure, causing the internal equipment to bear a large acceleration load. This can result in minor issues such as loosening of equipment fixation and poor contact of connection terminals, or even damage to core equipment or paralysis of the entire power system. Summary of the Invention

[0006] The purpose of this invention is to provide a seismic-resistant power equipment box enclosure to solve the problem of poor shock absorption effect of current power equipment box enclosures; the purpose of this invention is also to provide a seismic-resistant power equipment box using this enclosure to solve the above-mentioned problems.

[0007] The technical solution for the enclosure of the earthquake-resistant power equipment box of the present invention is as follows: A seismic-resistant power equipment box has an outer bottom surface with a base damping structure for support on the ground, and an inner bottom surface with two or more equipment cabinet installation areas corresponding to each equipment cabinet for installation within the box. Each equipment cabinet installation area has a regional damping structure, and at least one regional damping structure has an equipment damping structure on its upper side for support of the corresponding equipment cabinet. The base damping structure, regional damping structure, and equipment damping structure are used for elastic deformation when the power equipment box vibrates. The stiffness of the base damping structure is greater than that of the regional damping structure, and the stiffness of the regional damping structure is greater than that of the equipment damping structure.

[0008] Beneficial Effects: This invention improves upon the existing power equipment box design by incorporating a base damping structure on the outer bottom surface of the box, and further adding a regional damping structure on the inner bottom surface. Furthermore, it adds equipment damping structures to some of these regional damping structures, creating a three-tiered damping system: base damping, regional damping, and equipment damping. The damping stiffness of these three structures decreases sequentially, achieving progressively refined damping from the overall box to the equipment areas and then to the core equipment. The base damping structure significantly attenuates vibrations transmitted from the foundation, the regional damping structures provide secondary damping for equipment cabinets in different areas, and the equipment damping structures provide precise damping for core, sensitive equipment cabinets. This synergistic effect of the three levels of damping ensures that vibration energy is fully dissipated along the transmission path, effectively avoiding the technical shortcomings of existing technologies where a single damping structure cannot simultaneously meet the seismic requirements of various equipment levels, thus improving the overall damping effect.

[0009] Furthermore, the stiffness of the damping structure differs in at least two regions. Stiffness represents the ability of the damping structure to resist deformation when subjected to force.

[0010] Beneficial effects: Under the same load, the higher the stiffness, the smaller the deformation; according to the weight and seismic sensitivity of equipment cabinets in different areas, by adjusting the stiffness of the damping structure in different areas, the matching of differentiated damping parameters can be achieved, which is conducive to adapting to the coexistence of multiple types of equipment.

[0011] Furthermore, the base shock absorption structure includes an upper seat, a rubber support, and a lower seat. The upper seat is fixed to the outer bottom surface of the housing, and the lower seat is used to support the ground. The rubber support is sandwiched between the upper seat and the lower seat, with its upper end fixedly connected to the upper seat and its lower end fixedly connected to the lower seat. The upper seat includes an upper support fixed to the outer bottom surface of the housing and an upper connecting plate located below the upper support and installed on the upper support with adjustable height. The upper connecting plate is fixed to the upper end of the rubber support.

[0012] Beneficial effects: Rubber supports can stably bear the entire weight of the power equipment box, while also providing a certain degree of shock absorption. The height of the rubber supports is adjustable to adapt to the ground, ensuring that the various base shock-absorbing structures on the bottom surface of the box are well supported on the ground.

[0013] Furthermore, multiple upper connecting plates are connected to the same upper support, and each upper connecting plate has a separate rubber support fixed to its lower side, and each rubber support has a separate lower support body fixed to its lower side.

[0014] Beneficial effects: The same base shock absorption structure has multiple adjustable support points, which improves the reliability of ground support.

[0015] Furthermore, the regional damping structure is a rubber pad.

[0016] Beneficial effects: It facilitates the formation of large-area support for equipment cabinets and also provides shock absorption.

[0017] Furthermore, the equipment's vibration damping structure employs wire rope vibration dampers.

[0018] Beneficial effects: It not only provides vibration isolation and buffering in the vertical direction, but also ensures vibration isolation and buffering in the horizontal direction, thus meeting the impact resistance requirements.

[0019] Furthermore, the equipment's vibration damping structure is used to support the uninterruptible power supply cabinet.

[0020] Beneficial effect: Three-level vibration reduction for equipment cabinets with high vibration reduction requirements.

[0021] Furthermore, the enclosure has side panels, with the outer side of the side panels facing the horizontal side and the inner side of the side panels having shock-absorbing linings.

[0022] Beneficial effects: The shock-absorbing lining acts as a shock absorber on the side panels, which helps to absorb the vibration of the enclosure.

[0023] Furthermore, one of the left and right side panels of the enclosure is provided with a vertically extending guide rail, and the other is provided with a vertically extending guide groove so that two adjacent enclosures can be connected by the guide rail and the guide groove. The side panel of the enclosure is provided with a connection structure for connecting bolts to lock the guide rail and the guide groove.

[0024] Beneficial effects: The use of guide rails and guide grooves can restrict the position of two adjacent boxes. At the same time, the use of bolts to lock the position can reduce the number of bolts used and ensure reliable connection, making it convenient to combine boxes side by side.

[0025] The technical solution of the earthquake-resistant power equipment box of the present invention is as follows: An earthquake-resistant power equipment box includes a box body and various equipment cabinets installed inside the box body. The outer bottom surface of the box body is provided with a base damping structure for supporting the equipment cabinets on the ground. The inner bottom surface of the box body is provided with two or more equipment cabinet installation areas corresponding to each equipment cabinet for installation inside the box body. Each equipment cabinet installation area is provided with a regional damping structure. At least one regional damping structure is provided with an equipment damping structure on its upper side for the corresponding equipment cabinet to be supported on the regional damping structure or the equipment damping structure. The base damping structure, regional damping structure, and equipment damping structure are used for elastic deformation when the power equipment box vibrates. The stiffness of the base damping structure is greater than the stiffness of the regional damping structure, and the stiffness of the regional damping structure is greater than the stiffness of the equipment damping structure.

[0026] Beneficial Effects: This invention improves upon the existing power equipment box design by incorporating a base damping structure on the outer bottom surface of the box, and further adding a regional damping structure on the inner bottom surface. Furthermore, it adds equipment damping structures to some of these regional damping structures, creating a three-tiered damping system: base damping, regional damping, and equipment damping. The damping stiffness of these three structures decreases sequentially, achieving progressively refined damping from the overall box to the equipment areas and then to the core equipment. The base damping structure significantly attenuates vibrations transmitted from the foundation, the regional damping structures provide secondary damping for equipment cabinets in different areas, and the equipment damping structures provide precise damping for core, sensitive equipment cabinets. This synergistic effect of the three levels of damping ensures that vibration energy is fully dissipated along the transmission path, effectively avoiding the technical shortcomings of existing technologies where a single damping structure cannot simultaneously meet the seismic requirements of various equipment levels, thus improving the overall damping effect.

[0027] Furthermore, the stiffness of the damping structure differs in at least two regions. Stiffness represents the ability of the damping structure to resist deformation when subjected to force.

[0028] Beneficial effects: Under the same load, the higher the stiffness, the smaller the deformation; according to the weight and seismic sensitivity of equipment cabinets in different areas, by adjusting the stiffness of the damping structure in different areas, the matching of differentiated damping parameters can be achieved, which is conducive to adapting to the coexistence of multiple types of equipment.

[0029] Furthermore, the base shock absorption structure includes an upper seat, a rubber support, and a lower seat. The upper seat is fixed to the outer bottom surface of the housing, and the lower seat is used to support the ground. The rubber support is sandwiched between the upper seat and the lower seat, with its upper end fixedly connected to the upper seat and its lower end fixedly connected to the lower seat. The upper seat includes an upper support fixed to the outer bottom surface of the housing and an upper connecting plate located below the upper support and installed on the upper support with adjustable height. The upper connecting plate is fixed to the upper end of the rubber support.

[0030] Beneficial effects: Rubber supports can stably bear the entire weight of the power equipment box, while also providing a certain degree of shock absorption. The height of the rubber supports is adjustable to adapt to the ground, ensuring that the various base shock-absorbing structures on the bottom surface of the box are well supported on the ground.

[0031] Furthermore, multiple upper connecting plates are connected to the same upper support, and each upper connecting plate has a separate rubber support fixed to its lower side, and each rubber support has a separate lower support body fixed to its lower side.

[0032] Beneficial effects: The same base shock absorption structure has multiple adjustable support points, which improves the reliability of ground support.

[0033] Furthermore, the regional damping structure is a rubber pad.

[0034] Beneficial effects: It facilitates the formation of large-area support for equipment cabinets and also provides shock absorption.

[0035] Furthermore, the equipment's vibration damping structure employs wire rope vibration dampers.

[0036] Beneficial effects: It not only provides vibration isolation and buffering in the vertical direction, but also ensures vibration isolation and buffering in the horizontal direction, thus meeting the impact resistance requirements.

[0037] Furthermore, the equipment's vibration damping structure is used to support the uninterruptible power supply cabinet.

[0038] Beneficial effect: Three-level vibration reduction for equipment cabinets with high vibration reduction requirements.

[0039] Furthermore, the enclosure has side panels, with the outer side of the side panels facing the horizontal side and the inner side of the side panels having shock-absorbing linings.

[0040] Beneficial effects: The shock-absorbing lining on one side of the equipment cabinet provides lateral shock absorption, which helps to absorb vibrations.

[0041] Furthermore, one of the left and right side panels of the enclosure is provided with a vertically extending guide rail, and the other is provided with a vertically extending guide groove so that two adjacent enclosures can be connected by the guide rail and the guide groove. The side panel of the enclosure is provided with a connection structure for connecting bolts to lock the guide rail and the guide groove.

[0042] Beneficial effects: The use of guide rails and guide grooves can restrict the position of two adjacent boxes. At the same time, the use of bolts to lock the position can reduce the number of bolts used and ensure reliable connection, making it convenient to combine boxes side by side. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of the enclosure of an embodiment of the earthquake-resistant power equipment box of the present invention; Figure 2This is a schematic diagram of the graded vibration reduction structure of an embodiment of the earthquake-resistant power equipment box of the present invention; Figure 3 This is a schematic diagram of the base vibration damping structure of an embodiment of the earthquake-resistant power equipment box of the present invention; Figure 4 This is a schematic diagram of two boxes arranged side by side, representing an embodiment of the earthquake-resistant power equipment box of the present invention.

[0044] In the diagram: 101, base frame; 102, column; 103, top frame; 104, side panel; 105, crossbeam; 106, box door; 201. Base shock absorption structure; 2011. Upper support; 2012. Upper connecting plate; 2013. Rubber support; 2014. Lower connecting plate; 202. Regional damping structure; 203. Equipment damping structure; 204. Damping lining; 300. Equipment cabinet. Detailed Implementation

[0045] The basic concept of the seismic-resistant power equipment box of the present invention is to design a differentiated vibration reduction structure based on the actual vibration reduction requirements of different equipment cabinets. For equipment cabinets with high vibration reduction requirements, a three-level layered vibration reduction system is constructed, consisting of a base vibration reduction structure, a regional vibration reduction structure, and an equipment vibration reduction structure. The vibration reduction stiffness of the three structures decreases sequentially, providing precise vibration reduction for sensitive equipment cabinets. The three-level vibration reduction works synergistically, and the vibration energy is fully dissipated along the transmission path, thus improving the vibration reduction effect.

[0046] The following detailed description is provided in conjunction with specific examples.

[0047] Embodiments of the earthquake-resistant power equipment box of the present invention: like Figure 1 , Figure 2 , Figure 3 As shown, the seismic-resistant power equipment box includes a box body and various equipment cabinets 300 integrated within the box body. Each equipment cabinet has its own cabinet, which is fixed to the box body. The box body is supported on the ground of the installation foundation. There are various types of equipment cabinets 300; in this embodiment, there are high-voltage cabinets, transformer cabinets, low-voltage cabinets, compensation cabinets, and UPS cabinets. A UPS cabinet is an uninterruptible power supply cabinet, i.e., a cabinet that houses the uninterruptible power supply host or related power distribution equipment. The various equipment cabinets are electrically connected. The number and type of equipment cabinets, as well as the box body size, can be configured according to requirements; the figure is for illustrative purposes only.

[0048] The enclosure is used to house and secure the equipment cabinets 300. The enclosure includes a main frame, which comprises a base frame 101, uprights 102, and a top frame 103. There are four uprights 102, connected to the four corners of the base frame 101 and the top frame 103. A base plate is fixed to the underside of the base frame 101, the lower side of which forms the outer bottom surface of the enclosure, and the upper side of the base frame 101 forms the inner bottom surface. A top plate is fixed to the top frame 103, allowing the equipment cabinets 300 to be hoisted into the enclosure from above when the top plate is not installed. The enclosure also includes two side plates 104 fixed to the left and right uprights 102, and a rear plate fixed to the two rear uprights 102. The enclosure also includes a door 106 installed at the front end of the main frame, which can be opened to operate the equipment cabinets 300. Crossbeams 105 can be added at designated positions between the corresponding uprights 102 for reinforcement.

[0049] The base frame 101 and top frame 103 are welded from cold-formed channel steel or hot-rolled channel steel, and the material is Q235B structural steel. The columns 102 are made of cold-formed C-shaped steel or rectangular steel pipe, and the material is Q235B structural steel. The components are connected by carbon dioxide gas shielded welding, and after welding, they are ground smooth and treated with rust prevention, or they are connected with high-strength bolts. The side plates 104 are made of cold-rolled steel plates (SPCC) through laser cutting, CNC punching, and bending, and the outer surface is sprayed with gray epoxy polyester powder coating, which has good corrosion resistance and weather resistance.

[0050] The enclosure is divided into areas for high-voltage switchgear, transformers, low-voltage switchgear, compensation cabinets, and UPS cabinets, which can be distributed horizontally. Metal partitions can be installed between these areas, with openings on the partitions for cables and busbars to pass through. These metal partitions are made of cold-rolled steel sheet (SPCC) with a powder-coated surface. The metal partitions are fixed to the columns and base frame using screws or clips, providing multiple functions including electrical isolation, fire protection, and electromagnetic shielding. The openings on the metal partitions for cables and busbars have rubber sleeves to prevent scratches on the cable insulation and also provide some sealing and dust protection. The partitions achieve multiple functions of electrical isolation, fire protection, and electromagnetic shielding, improving the internal space utilization and operational safety of the enclosure.

[0051] A reinforcing beam is installed on the base frame corresponding to the transformer installation area. The reinforcing beam has multiple mounting holes for securing the transformer base. The reinforcing beam is made of No. 10 or No. 12 hot-rolled channel steel, material Q235B. Both ends of the beam are welded to the base frame, and the welds undergo non-destructive testing to ensure welding quality. The reinforcing beam improves the local rigidity and load-bearing capacity of the base frame at the transformer installation location, preventing excessive deflection deformation of the base frame due to the large weight of the transformer. The mounting holes are elongated oval-shaped, facilitating fine-tuning of the transformer base's position during installation.

[0052] The cabinet door corresponding to the installation area is equipped with ventilation louvers, and a dust filter is installed on the inside of the louvers. The ventilation louvers are directly processed onto the door panel using a louver stamping process. The louver blades are designed with a downward tilt for rain protection. The tilt angle is designed to ensure good ventilation and heat dissipation while preventing external rainwater from entering the cabinet. The dust filter is made of stainless steel wire mesh or nylon filter and is fixed to the inside of the louvers by clips or magnets, making it easy to disassemble, clean, and replace.

[0053] To improve seismic resistance, the enclosure is equipped with a graded seismic-resistant structure, which includes a base damping structure 201, a zone damping structure 202, and an equipment damping structure 203. The base damping structure 201 is installed on the outer bottom surface of the enclosure and is used to support it on the ground. The equipment cabinet 300 installation area on the inner bottom surface of the enclosure corresponds one-to-one with the equipment cabinet 300. Each equipment cabinet 300 installation area is equipped with a zone damping structure 202, and at least one zone damping structure 202 is equipped with an equipment damping structure 203 on its upper side. Some equipment cabinets 300 are supported on the zone damping structure 202, and some equipment is supported on the equipment damping structure 203. The equipment is supported in the area where the equipment damping structure 203 is present, and the equipment is directly supported by the zone damping structure 202 in the area where the equipment damping structure 203 is present. The base damping structure 201, the zone damping structure 202, and the equipment damping structure 203 are used to elastically deform and absorb vibrations when the power equipment box vibrates. The stiffness of the base damping structure 201 is greater than that of the zone damping structure 202, and the stiffness of the zone damping structure 202 is greater than that of the equipment damping structure 203. The damping stiffness of the base damping structure 201, the zone damping structure 202, and the equipment damping structure 203 decreases sequentially, as do both vertical and horizontal stiffness. Greater stiffness requires greater force to produce a unit displacement. By utilizing a multi-layered vibration energy dissipation mechanism, vibrations are less likely to be amplified step by step, resulting in better vibration absorption, especially for equipment with high vibration damping requirements.

[0054] The base vibration damping structure 201 includes an upper base, a rubber support 2013, and a lower base. The upper base is fixed to the outer bottom surface of the enclosure, and the lower base is used to support the ground. The rubber support 2013 is sandwiched between the upper and lower bases, with its upper end fixedly connected to the upper base and its lower end fixedly connected to the lower base. The upper base includes an upper support 2011 fixed to the outer bottom surface of the enclosure and an upper connecting plate 2012 located below the upper support 2011 and adjustable in height. The upper connecting plate 2012 is fixed to the upper end of the rubber support 2013. The lower base is a lower connecting plate 2014. The rubber support 2013 facilitates stable bearing of the entire weight of the power equipment enclosure while also providing a certain degree of vibration damping. The height of the rubber support 2013 is adjustable to adapt to the ground, ensuring that each base vibration damping structure 201 on the outer bottom surface of the enclosure is well supported on the ground. In other embodiments, the structure can also be configured as a non-adjustable structure.

[0055] The upper support 2011 has a bolt connection structure at its center for fixed connection with the bottom plate of the enclosure. The upper connecting plate 2012 can be bolted to the upper support 2011; the bolts are fixed, and the height can be adjusted by screwing on the upper connecting plate 2012. Various rubber supports 2013 are distributed around the center line of the upper support 2011. Multiple base damping structures 201 can be installed at the bottom of the enclosure, preferably distributed at the four corners. Multiple upper connecting plates 2012 are connected to the lower side of the same upper support 2011 for each base damping structure 201. Each upper connecting plate 2012 has a separate rubber support 2013 fixed to its lower side, and each rubber support 2013 has a separate lower connecting plate 2014 fixed to its lower side. The same base damping structure 201 has multiple adjustable support points, improving the reliability of the ground support. In other embodiments, a single base damping structure can also have a large rubber support.

[0056] The base vibration damping structure 201 is located between the bottom of the enclosure and the mounting foundation. The upper support 2011, upper connecting plate 2012, and lower connecting plate 2014 are all made of Q235B hot-rolled steel plate, laser-cut and drilled, with hot-dip galvanized surface treatment. The upper support is fixed to the base frame with high-strength bolts, and the lower connecting plate is fixed to the mounting foundation. The mounting foundation can be a concrete foundation or a steel structure foundation. The lower connecting plate is fixed to the concrete foundation with chemical anchors or expansion bolts, or to the steel structure foundation by welding / bolts.

[0057] The rubber bearings can be the HDR series high-damping seismic isolation rubber bearings produced by Zhejiang Tiantie Technology Co., Ltd. These bearings are made of multiple layers of stiffening steel plates and high-damping rubber layers, alternately laminated through hot vulcanization, meeting the requirements of GB 20688 standard. The vertical bearing capacity of the bearings meets the full-load weight requirements of the box girder. The high-damping rubber layers are made by adding functional additives such as carbon black, hindered phenolic antioxidants, and phenolic resin to natural rubber, resulting in a high damping ratio. During earthquakes, the internal friction of the rubber layers converts vibration energy into heat energy, effectively dissipating seismic energy. The stiffening steel plates provide stable and reliable vertical bearing capacity, and the bearings can adapt to indoor and outdoor use requirements under various climatic conditions. Structurally, the upper and lower end faces of the rubber bearings are fixedly connected to the upper and lower connecting plates respectively by bolts. The lower connecting plate transmits the ground vibration to the bearing, and then the vibration load is transmitted to the base frame. In other embodiments, the base vibration damping structure can also use the GH-60A type steel wire rope vibration isolator produced by Xi'an Hongan Microwave Co., Ltd., which is an all-metal vibration isolator with three-dimensional variable stiffness and variable damping characteristics, and can be used for vibration isolation and buffering of electrical cabinets.

[0058] In this embodiment, the stiffness of the damping structures in at least two areas is different. Stiffness represents the ability of a damping structure to resist deformation under stress. Under the same load, the higher the stiffness, the smaller the deformation. Based on the weight and seismic sensitivity of the equipment cabinets 300 in different areas, the damping parameters are matched by adjusting the stiffness of the damping structures in different areas, which is beneficial for adapting to the coexistence of multiple types of equipment. In other embodiments, the same regional damping structure can also be used.

[0059] The zone damping structure includes a damping pad layer laid on the base frame. This damping pad layer, essentially a rubber pad, is made of nitrile rubber through a molding and vulcanization process. The lower surface of the damping pad layer is bonded to the base frame of the enclosure using epoxy resin structural adhesive. This adhesive is preferably a two-component epoxy resin structural adhesive, ensuring that it will not detach under long-term vibration conditions. The upper surface of the damping pad layer has diamond-shaped anti-slip textures to increase friction with the equipment cabinet base and prevent lateral slippage of the equipment during vibration. Nitrile rubber has excellent oil resistance, abrasion resistance, and good damping characteristics, with a damping stiffness between that of the base damping structure and the equipment damping structure. The upper surface of the damping pad layer can support the equipment base, facilitating large-area support for the equipment cabinet while simultaneously providing damping.

[0060] The thickness of the vibration damping pad is determined based on the weight and seismic requirements of the equipment in the corresponding area. The vibration damping pads in the high-voltage switchgear and transformer installation areas are thicker, while those in the compensation cabinet and UPS cabinet installation areas are relatively thinner, achieving differentiated vibration damping effects in different areas. The thicker and harder vibration damping pads in the high-voltage switchgear and transformer installation areas, and the thinner and less rigid ones in the compensation cabinet and UPS cabinet installation areas, meet the requirement of decreasing stiffness. The equipment cabinet base on top of the vibration damping pad is fixed to the cabinet frame by bolts passing through the vibration damping pad.

[0061] The equipment vibration damping structure is located in the equipment installation area with high vibration damping requirements; in this embodiment, it is the installation location of the UPS cabinet. The equipment vibration damping structure can use the GX-60AN type steel wire rope vibration damper manufactured by Xi'an Hongan Microwave Co., Ltd. This vibration damper consists of multiple strands of steel wire rope wound into a spiral shape and fixed between two metal end plates. It employs an arched rubber pad that tightly engages with the steel wire rope, simultaneously meeting the vibration isolation and buffering requirements in both vertical and horizontal directions, and exhibiting strong impact resistance. The equipment vibration damping structure is fixed to the upper side of the vibration damping pad layer. It is bolted to both the equipment cabinet base and the vibration damping pad layer, and can pass through the vibration damping pad layer to be fixed to the cabinet's base frame.

[0062] Wire rope vibration isolators are all-metal vibration isolators with nonlinear stiffness and dry friction damping characteristics. They utilize the dry friction between the wire rope strands during vibration deformation to dissipate vibration energy. The wire rope is made of 304 stainless steel, which has excellent corrosion resistance and fatigue resistance, and is non-aging and maintenance-free. Specific models of wire rope vibration isolators available include the GX series (such as GX-20AN, GX-40AN, GX-50AN1, GX-60AN, etc.) and GH and JGX series wire rope vibration isolators produced by Xi'an Hongan Microwave Co., Ltd. The GX-40AN model, in particular, uses an arched rubber pad combined with the wire rope, providing vibration isolation and buffering not only in the vertical direction but also in the horizontal direction, meeting impact resistance requirements and suitable for vibration isolation and buffering in electrical cabinets, communication equipment, etc. It possesses three-dimensional variable stiffness and variable damping characteristics. In other embodiments, the equipment vibration damping structure can also use metal-rubber vibration dampers; or it can use composite spring vibration dampers, which combine metal helical springs and rubber into one, integrating the high load-bearing capacity of metal springs and the high damping characteristics of rubber materials. It has stable shape and mechanical properties, can withstand large loads and large deformations, has good vibration isolation and noise reduction effects, operates smoothly, and has a short resonance zone time, making it suitable for vibration damping protection of capacitor banks in compensation cabinets.

[0063] The left and right side panels 104 and the inner surface of the rear panel of the enclosure are equipped with damping linings 204. These linings are damping layers made of viscoelastic polymer damping material. This material uses butyl rubber or polyurethane elastomer as the matrix, with fillers such as mica powder and graphite added to increase the damping loss factor. It is then calendered into sheets. The damping layer is bonded to the inner surface of the side panels using Chemlok adhesive, forming a constrained damping structure. When the enclosure is subjected to vibration, the bending vibration of the side panels causes shear deformation in the damping layer. The viscoelastic deformation of the damping material converts the vibrational mechanical energy into heat energy, effectively suppressing the resonance and coincidence effects of the enclosure side panels and reducing structural noise radiation. The constrained damping structure dissipates vibrational mechanical energy through the shear deformation of the damping layer, resulting in a better vibration reduction effect than a free damping structure. The rubber damping layer effectively suppresses resonance and coincidence effects, and the sound insulation effect of the constrained damping structure is superior to that of a free damping structure.

[0064] By constructing a three-tiered vibration damping system consisting of a base damping structure, a regional damping structure, and an equipment damping structure, with the damping stiffness decreasing sequentially among the three, refined vibration damping is achieved from the overall enclosure to the equipment area and then to the equipment itself. The base damping structure significantly attenuates vibrations transmitted from the foundation initially; the regional damping structure provides differentiated damping based on the weight and vibration characteristics of equipment in different areas; and the equipment damping structure provides precise vibration isolation for specific sensitive equipment. The synergistic effect of the three-tiered damping system ensures that vibration energy is fully dissipated along the transmission path, effectively avoiding the technical shortcomings of existing technologies where a single damping structure cannot simultaneously meet the seismic resistance requirements of equipment at each level.

[0065] The base damping structure employs high-damping isolation rubber bearings. These bearings utilize a laminated rubber structure to generate horizontal shear deformation, extending the natural period of the enclosure and preventing resonance with seismic waves. Simultaneously, the internal friction effect of the high-damping rubber material converts seismic energy into heat energy, significantly reducing the vibration energy transmitted to the enclosure at its source. The equivalent damping ratio of this bearing meets the isolation requirements under high-intensity earthquake conditions, significantly improving the seismic safety level of the enclosure. Vibration energy is transmitted and attenuated according to the designed path, and accurate installation and positioning ensure the reliability of the damping effect.

[0066] The equipment's vibration damping structure employs wire rope vibration isolators, utilizing the dry friction damping between the wire rope strands or the composite damping characteristics of metal and rubber to achieve precise vibration isolation with low stiffness and high damping. Wire rope vibration isolators are stable in operation and feature non-aging and maintenance-free operation, making them particularly suitable for micro-amplitude vibration isolation protection of core precision equipment (such as UPS control modules), significantly reducing the risk of failure of core equipment under vibration conditions.

[0067] The electrical connections between the various equipment cabinets within the enclosure utilize a flexible busbar connection structure. This flexible busbar, also known as a laminated insulated flexible busbar, is composed of multiple layers of flat, thin copper conductors designed to prevent corona discharge. The conductor material is T2 soft copper strip, available in bare copper or tin-plated copper options to improve oxidation resistance and contact reliability. The copper strip laminations are bonded at both ends using polymer diffusion welding technology, forming a rigid connection area for connecting equipment terminals. The heat-shrinkable insulating sleeve covering the flexible busbar is made of polyolefin material, possessing flame-retardant, insulating, and abrasion-resistant properties. After heat shrinking, it tightly wraps around the thin copper sheet laminations. The heat-shrinkable insulating sleeve can also be replaced with extruded polyvinyl chloride (PVC) or thermoplastic elastomer (TPE) insulation layers; TPE material is environmentally friendly due to its low smoke and halogen-free properties. Bolt connection holes are provided at both ends of the flexible busbar for bolted connections to equipment wiring terminals. Because of its highly flexible multi-layered thin copper sheet structure, it can be bent into any spatial shape by hand or with simple tools, while maintaining high rigidity in the width direction. When the enclosure is subjected to vibration, the flexible busbar can absorb the vibration displacement through its own elastic deformation, effectively blocking the transmission of vibration from the enclosure to the equipment terminals. This eliminates the problems of terminal loosening and contact failure caused by rigid copper busbars, significantly improving the long-term reliability of electrical connections.

[0068] Combination Figure 4 (Top plate not shown) For two electrical equipment boxes assembled side-by-side, one of the left and right side panels of the box has a vertically extending guide rail, and the other has a vertically extending guide groove, allowing adjacent boxes to be connected via the guide rail and guide groove. The side panels of the box have a connection structure for connecting bolts to lock the connection between the guide rail and the guide groove. Using the guide rail and guide groove can restrict the position of the two adjacent boxes, and the bolt locking position can reduce the number of bolts used, ensure reliable connection, and facilitate the side-by-side combination of boxes.

[0069] Adjacent enclosures slide vertically into guide slots via guide rails. One enclosure is placed on the ground, while the other is hoisted so that the guide rail of one enclosure slides vertically into the guide slot of the other. The guide rails and guide slots can be fixedly connected to the column 102. The guide rails can be dovetail-shaped, with corresponding dovetail grooves, or a combination of T-shaped guide rails and T-shaped grooves. The guide rails and guide slots can be integrally processed from 6063-T5 aluminum alloy profiles using an extrusion molding process, with an anodized surface treatment. When the guide rail is inserted into the guide slot, a self-locking fit is formed in the horizontal direction, capable of withstanding pull-out forces and lateral forces between the enclosure frames, effectively preventing the separation of adjacent enclosures. The guide rails and guide slots extend vertically along the column, with a length approximately equal to the column height, ensuring overall rigidity and stability after connection. The clearance between the guide rails and guide slots is controlled to ensure both smooth sliding insertion and tight fit after connection. The dovetail groove design makes the connection more stable, effectively improving the connection strength between enclosures.

[0070] The uprights are equipped with threaded holes for locking bolts. These high-strength bolts have a Dacromet finish. Each upright has four locking bolts in two sets (upper and lower). These bolts pass through the uprights, side plates, guide rails, and guide grooves to secure the housing to each other. Once the guide rails are fully inserted into the guide grooves, the adjacent uprights are locked in place using the locking bolts. This ensures reliable connection and resistance to vibration and loosening. The threaded holes can be formed by welding nut inserts to the uprights or by direct tapping. The nut inserts are made of 20# steel and have undergone heat treatment.

[0071] The system employs a vertical sliding connection between guide rails and guide slots, secured with locking bolts, enabling rapid docking and separation of adjacent enclosures. The dovetail or T-shaped cross-section of the guide rails creates a horizontal mechanical self-locking mechanism after insertion, allowing for initial positioning and docking of the enclosures without the need for tools. Once the guide rails are fully inserted, the adjacent uprights are locked in place with locking bolts, completing the reliable connection between the enclosures. Disassembly is simple: just loosen the locking bolts and separate the enclosures vertically. The entire process is quick and easy, requiring no welding or cutting. The enclosure side panels are fixed to the frame with clips or screws, facilitating disassembly and maintenance. Compared to traditional bolted flange connections or welding, this system eliminates the need for extensive on-site bolt alignment and tightening, significantly reducing installation time. Its disassembly capability facilitates future expansion, renovation, and relocation, and its reusability reduces overall lifecycle costs, perfectly meeting the engineering requirements of data center power distribution systems for rapid assembly and flexible reconfiguration.

[0072] During installation, a concrete foundation is poured at the installation site, and chemical anchors are pre-embedded. The base damping structure is assembled, hoisted to the foundation position, and secured. Then, the enclosure is hoisted, and the base frame is connected to the base damping structure with bolts. When multiple enclosures are placed side-by-side, adjacent enclosures are vertically connected via guide rails and guide slots, and then the locking bolts are tightened to complete the enclosure connection. Inside the enclosure, the high-voltage switchgear, transformer, low-voltage switchgear, compensation cabinet, and UPS cabinet are installed, with each device placed on its corresponding damping pad. A steel wire rope shock absorber is installed under the UPS cabinet. Flexible busbars connect the various devices. Finally, the side panels are installed, and after completing all installation procedures, power-on testing and trial operation are performed.

[0073] Specifically: Pour a concrete foundation on the installation site, ensuring the foundation surface is flat. Pre-embed chemical anchors or pre-drill holes for expansion bolts at the corresponding positions on the lower connecting plate. If a steel structure foundation is used, pre-weld or pre-embed connecting steel plates. Fix the lower connecting plate to the concrete foundation using chemical anchors or expansion bolts, ensuring the tightening torque meets design requirements. During installation, ensure the rubber bearing's levelness meets design requirements. The container is hoisted to the installation position using hoisting equipment, aligning the container's base frame with the base's shock-absorbing structure. The base frame is then secured to the base's shock-absorbing structure using bolts. During hoisting, care should be taken to operate smoothly and avoid collisions that could deform the container. When multiple enclosures need to be arranged side-by-side, align the uprights of adjacent enclosures so that the guide rail on one side of one enclosure's upright aligns with the guide groove on the other side of another enclosure's upright. Slightly lift the enclosure using hoisting equipment, and slide the guide rail vertically into the guide groove until fully engaged. If resistance is encountered during insertion, gently tap to adjust; do not force it. After the guide rail is fully inserted, pass the locking bolts through the pre-drilled bolt holes on the uprights, screw them into the threaded holes on the adjacent uprights, and tighten to the specified torque. Repeat the above steps to complete the side-by-side assembly of all enclosures. Install the internal equipment according to the design drawings, placing the high-voltage cabinet, transformer, low-voltage cabinet, compensation cabinet, UPS cabinet, and other equipment in their respective areas within the enclosure frame. During installation, first lay and secure the shock-absorbing padding layer on the base frame for the corresponding area. Then, place the equipment base on the shock-absorbing padding layer and secure it to the base frame or reinforcing beam with bolts. For core equipment such as UPS units, install steel wire rope shock absorbers or metal rubber shock absorbers between the equipment cabinet base and the shock-absorbing padding layer. For electrical connections, a flexible busbar connection structure is used to connect the busbars between the various equipment cabinets within the enclosure. Based on the spatial location of the equipment terminals, the flexible busbar is manually bent into the required spatial configuration. The equipment connection terminals at both ends are then fixed to the equipment terminals using bolts, ensuring the tightening torque meets electrical connection specifications. For metal partition openings where cables are laid, rubber sheaths should be installed after the cables are laid.

[0074] Install the side panels, side sealing plates, and cabinet doors. Install the side panels with damping layers onto the corresponding positions on the cabinet frame, securing them with clips or screws. After completing all mechanical and electrical installations, power on the equipment for testing, checking that all electrical parameters meet design requirements. Once confirmed to be correct, put the equipment into formal operation.

[0075] When relocation or expansion is required, the disassembly steps should be performed in reverse order of the steps described above. First, disconnect the electrical connections and remove the side panels. Loosen the locking bolts between the multiple enclosures and separate the enclosures vertically. The entire process does not require cutting or damaging the enclosure structure, and each module can be preserved intact and reused.

[0076] During operation, when external seismic waves or impact vibrations are transmitted upwards from the foundation, they first pass through the base damping structure at the bottom of the enclosure. The rubber bearings, through their laminated rubber structure, generate horizontal shear deformation, extending the natural period of the overall enclosure structure and preventing it from entering the dominant frequency range of seismic waves, thus avoiding resonance amplification. Simultaneously, the internal friction of the high-damping rubber material converts the seismic input energy into heat energy, effectively reducing the vibration energy transmitted to the enclosure; the vibration energy is significantly attenuated for the first time through this path. The residual vibration energy, after being attenuated by the base damping structure, enters the enclosure and is then subjected to secondary damping by the regional damping structures at the bottom of each equipment installation area. The damping pads in different equipment areas are configured with different damping stiffness and damping parameters based on the weight and seismic sensitivity of the equipment in that area, achieving differentiated damping for different equipment areas. The damping pads in the transformer installation area have greater load-bearing stiffness and thickness to support heavy transformers; while the damping pads in the compensation cabinet and UPS cabinet areas have lower stiffness and higher damping ratios. For core equipment, such as precision control modules in UPS cabinets or intelligent controllers in compensation cabinets, vibration damping structures (steel wire rope dampers or metal rubber dampers) can be installed under the equipment base. Because these damping structures have the lowest damping stiffness and the highest damping ratio, they can achieve precise micro-amplitude vibration isolation, ensuring that core sensitive equipment can still operate normally under residual micro-vibration conditions. The damping stiffness of the base damping structure, the zone damping structure, and the equipment damping structure decreases sequentially, forming a three-level vibration energy attenuation mechanism from coarse to fine and from overall to local, ensuring that vibration energy is fully dissipated along the transmission path, and that all levels of equipment remain within a safe vibration level range.

[0077] An embodiment of the enclosure of the earthquake-resistant power equipment box of the present invention: The enclosure of the earthquake-resistant power equipment box in this embodiment is the same as that in the above embodiments, and will not be described again here.

[0078] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A seismic-resistant power equipment box enclosure, wherein the outer bottom surface of the enclosure is provided with a base damping structure for supporting the equipment on the ground, and the inner bottom surface of the enclosure is provided with two or more equipment cabinet mounting areas corresponding one-to-one with each equipment cabinet for mounting each equipment cabinet inside the enclosure, characterized in that, Each equipment cabinet installation area is equipped with a regional vibration damping structure. At least one regional vibration damping structure has an equipment vibration damping structure on its upper side, so that the corresponding equipment cabinet can be supported on the regional vibration damping structure or the equipment vibration damping structure. The base vibration damping structure, the regional vibration damping structure and the equipment vibration damping structure are used for elastic deformation when the power equipment box vibrates. The stiffness of the base vibration damping structure is greater than that of the regional vibration damping structure, and the stiffness of the regional vibration damping structure is greater than that of the equipment vibration damping structure.

2. The enclosure of the earthquake-resistant power equipment box according to claim 1, characterized in that, The damping structures in at least two regions have different stiffnesses. Stiffness represents the ability of a damping structure to resist deformation when subjected to force.

3. The enclosure of the earthquake-resistant power equipment box according to claim 1 or 2, characterized in that, The base shock absorption structure includes an upper base, a rubber support, and a lower base. The upper base is fixed to the outer bottom surface of the housing, and the lower base is used to support the ground. The rubber support is sandwiched between the upper base and the lower base, with its upper end fixedly connected to the upper base and its lower end fixedly connected to the lower base. The upper base includes an upper support fixed to the outer bottom surface of the housing and an upper connecting plate located below the upper support and installed on the upper support with adjustable height. The upper connecting plate is fixed to the upper end of the rubber support.

4. The enclosure of the earthquake-resistant power equipment box according to claim 3, characterized in that, Multiple upper connecting plates are connected to the same upper support. Each upper connecting plate has a separate rubber support fixed to its lower side, and each rubber support has a separate lower support body fixed to its lower side.

5. The enclosure of the earthquake-resistant power equipment box according to claim 1 or 2, characterized in that, The regional damping structure is a rubber pad.

6. The enclosure of the earthquake-resistant power equipment box according to claim 1 or 2, characterized in that, The equipment's vibration damping structure uses wire rope vibration dampers.

7. The enclosure of the earthquake-resistant power equipment box according to claim 1 or 2, characterized in that, The equipment's vibration damping structure is used to support the uninterruptible power supply cabinet.

8. The enclosure of the earthquake-resistant power equipment box according to claim 1 or 2, characterized in that, The enclosure has side panels, with the outer side of the side panels facing the horizontal side and the inner side of the side panels having shock-absorbing linings.

9. The enclosure of the earthquake-resistant power equipment box according to claim 1 or 2, characterized in that, The left and right side panels of the enclosure are provided with a guide rail extending vertically on one side and a guide groove extending vertically on the other side, so that two adjacent enclosures can be connected by the guide rail and the guide groove. The side panels of the enclosure are provided with a connection structure for connecting bolts to lock the guide rail and the guide groove.

10. A seismic-resistant electrical equipment box, characterized in that, It includes the enclosure of the earthquake-resistant power equipment box as described in any one of claims 1-9, and the various equipment cabinets installed inside the enclosure.

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