Prepackaged transformer substation with multidirectional synergic shock absorption structure

Abstract

The utility model provides a kind of prepackaged substation with multidirectional collaborative damping structure, it is related to prepackaged substation technical field.The prepackaged substation with multidirectional collaborative damping structure, including substation bottom support, substation bottom support upper end is fixedly connected with substation framework, substation framework inside filling is provided with substation wall, and substation framework upper end is fixedly connected with substation top cover.The prepackaged substation with multidirectional collaborative damping structure, through the collaborative work of support seat, hydraulic shock absorber, shock-absorbing plate, universal ball and support column, multiple freedom damping function in horizontal, vertical and torsion direction is realized, when substation suffers vibration, multiple universal ball re-distribution load is slid cooperatively, at the same time, hydraulic shock absorber uses hydraulic damping effect and the telescopic deformation of shock-absorbing spring, effectively absorbs vibration energy, solve the defect that traditional rigid connection is not good at damping effect under compound vibration environment, significantly improve power supply reliability.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated substation technology, specifically a prefabricated substation with a multi-directional cooperative vibration reduction structure. Background Technology

[0002] The proportion of intermittent distributed renewable energy sources such as wind power and photovoltaics in the power grid has been increasing year by year. As a key node for power reception, conversion and distribution, prefabricated substations are being deployed on a large scale in complex and diverse environments such as wind farms, photovoltaic power stations, coastal mudflats, and mountainous areas. Unlike traditional substations, these renewable energy power stations are often located in harsher environments. The substation foundations not only need to withstand the static load of their own equipment, but also face multi-dimensional and complex vibration impacts caused by wind turbine start-up and shutdown, wave impacts, vehicle traffic and even small earthquakes.

[0003] A search revealed Chinese patent CN212676722U, which discloses a shock-absorbing prefabricated substation. The substation includes a base plate. The shock-absorbing device, consisting of a first spring and a movable plate, and the main body of the prefabricated substation are two relatively independent devices that can be separated. When the first spring's shock-absorbing capacity is insufficient due to deformation or rust caused by external forces, the two devices can be separated, and the shock-absorbing device can be replaced. This avoids the problem of existing systems where the shock-absorbing device and the main body of the prefabricated substation are fixed together. When the shock-absorbing effect is insufficient, the entire prefabricated substation needs to be replaced or repaired, which is time-consuming and labor-intensive. Prefabricated substations are heavy, and currently, cranes are used for their installation. When a crane cannot be used in certain special locations, the second spring can easily move the device. In some special terrains, such as uneven terrain like hillsides, the hydraulic cylinder can be adjusted to keep the device stable.

[0004] In existing technologies, the base and foundation (such as a concrete platform) of prefabricated substations typically employ rigid connections or simple unidirectional vibration damping measures. While rigid connections integrate the substation with the foundation, offering structural simplicity, they fail to effectively isolate and attenuate vibration energy from different directions. This results in vibration forces being directly transmitted to precision electrical equipment inside the substation, such as transformers, switchgear, and control systems. This can easily lead to a series of problems, including loose bolts, fatigue fracture of insulation components, and relay malfunctions, seriously threatening the continuity and reliability of power supply.

[0005] Traditional rubber pad or unidirectional spring vibration isolators are primarily designed to handle vertical vibrations, but their isolation capabilities for combined horizontal and torsional vibrations are severely inadequate, failing to meet the demands of complex vibration environments. Rigid connections and simple damping methods cannot adaptively adjust to the direction and intensity of vibrations, easily leading to stress concentrations when encountering multidimensional combined vibrations, resulting in structural damage to connection points or the equipment itself. Therefore, a prefabricated substation with a multi-directional collaborative damping structure is proposed to address these issues. Utility Model Content

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a prefabricated substation with a multi-directional collaborative vibration reduction structure, thus solving the problems mentioned in the background technology.

[0007] (II) Technical Solution 2. To achieve the above objectives, this utility model is implemented through the following technical solution: a prefabricated substation with a multi-directional cooperative damping structure, including a substation base, a substation frame fixedly connected to the upper end of the substation base, a substation wall filled inside the substation frame, a substation top cover fixedly connected to the upper end of the substation frame, and a multi-directional damping mechanism fixedly provided at the lower end of the substation base. The multi-directional damping mechanism includes a support base, a hydraulic damper, a damping plate, universal balls, a support column, and a flexible connecting column. Universal balls are provided at both the upper and lower ends of the hydraulic damper. The lower end of the universal ball is fixedly connected to the support base, and the upper end of the universal ball is fixedly connected to the damping plate. The support column is fixedly installed on the top of the damping plate, and the top of the support column is fixedly installed on the bottom of the substation base. The flexible connecting column is fixedly installed between the damping plate and the support base.

[0008] Preferably, the hydraulic shock absorber includes a hydraulic cylinder, a piston rod, a mounting base, and a shock-absorbing spring. The hydraulic cylinder is inserted and installed at the top of the lower universal ball joint, the piston rod is inserted and movably installed at the middle of the top of the hydraulic cylinder, the mounting base is fixedly installed at the top of the piston rod, the top of the mounting base is installed at the bottom of the upper universal ball joint, and the shock-absorbing spring is sleeved and installed on the outer surface of the piston rod.

[0009] Preferably, multiple universal balls are provided, and the multiple universal balls are respectively installed on the top end of the support base and the bottom end of the shock-absorbing plate. The universal ball includes a positioning seat and a movable ball. The positioning seat is fixedly installed on the top end of the support base and the shock-absorbing plate. The movable ball is embedded in the inner side of the positioning seat. The top surface of the mounting seat and the lower end surface of the hydraulic cylinder are fixedly connected to the movable ball.

[0010] Preferably, the top surface of the mounting base and the lower surface of the hydraulic cylinder are both configured as arc-shaped concave surfaces.

[0011] Preferably, three hydraulic shock absorbers are provided, and the three hydraulic shock absorbers are respectively installed between two corresponding upper and lower universal balls, and the three hydraulic shock absorbers adopt an equilateral triangle layout.

[0012] Preferably, the support base is configured as a frustum structure that is wider at the top and narrower at the bottom, the flexible connecting column is located at the center of the upper end of the support base, and three hydraulic shock absorbers are located at the center of the flexible connecting column.

[0013] Preferably, the flexible connecting column includes a centrally located traction steel wire rope, with positioning discs fixedly connected to both the upper and lower ends of the traction steel wire rope. The two sets of positioning discs are fixedly connected to the top of the support base and the bottom of the shock-absorbing plate, respectively. A spiral compression rod is arranged in a circular array around the traction steel wire rope, with both the upper and lower ends of the spiral compression rod fixedly connected to the positioning discs. The spiral compression rod can be compressed to store elastic potential energy.

[0014] (III) Beneficial Effects This utility model provides a prefabricated substation with a multi-directional cooperative vibration reduction structure. It has the following beneficial effects: This prefabricated substation with a multi-directional collaborative vibration reduction structure achieves multi-degree-of-freedom vibration reduction functions in the horizontal, vertical, and torsional directions through the coordinated work of support bases, hydraulic shock absorbers, damping plates, universal balls, and support columns. When the substation is subjected to vibration, multiple universal balls slide collaboratively to redistribute the load. At the same time, the hydraulic shock absorbers effectively absorb vibration energy by utilizing the hydraulic damping effect and the expansion and contraction deformation of the damping springs. This solves the defect of poor vibration reduction effect of traditional rigid connections in complex vibration environments and significantly improves power supply reliability.

[0015] This prefabricated substation with a multi-directional collaborative vibration reduction structure enhances the structural strength of the multi-directional vibration reduction mechanism by setting flexible connecting columns between the hydraulic vibration dampers. This makes the mechanism more compact and results in a more significant vibration reduction effect when encountering multi-dimensional composite vibrations. It achieves the effect of multi-dimensional vibration reduction and high-strength support for the substation, solving the problem of ineffective vibration reduction and structural damage when encountering multi-dimensional composite vibrations, which would also lead to unstable support of the substation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an enlarged view of position A of this utility model; Figure 3 This is a schematic diagram of the hydraulic shock absorber structure of this utility model; Figure 4 This is a schematic diagram of the shock-absorbing spring structure of this utility model; Figure 5 This is a schematic diagram of the universal ball structure of this utility model; Figure 6 This is a schematic diagram of the flexible connecting column structure of this utility model.

[0017] Among them, 1. Substation roof; 2. Substation walls; 3. Substation frame; 4. Substation base; 5. Multi-directional vibration damping mechanism; 21. Support base; 22. Hydraulic shock absorber; 23. Damping plate; 24. Universal ball joint; 25. Support column; 26. Flexible connecting column; 221. Hydraulic cylinder; 222. Piston rod; 223. Mounting base; 224. Shock-absorbing spring; 261. Traction wire rope; 262. Positioning disc; 263. Helical compression rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model embodiment provides a prefabricated substation with a multi-directional cooperative vibration reduction structure, such as Figure 1-6 As shown, the system includes a substation base 4, with a substation frame 3 fixedly connected to the upper end of the base 4. The substation frame 3 is filled with substation walls 2. A substation top cover 1 is fixedly connected to the upper end of the frame 3. A multi-directional damping mechanism 5 is fixedly installed at the lower end of the base 4. The multi-directional damping mechanism 5 includes a support base 21, a hydraulic shock absorber 22, a damping plate 23, universal balls 24, a support column 25, and a flexible connecting column 26. Universal balls 24 are installed at both the upper and lower ends of the hydraulic shock absorber 22. The lower end of the lower universal ball 24 is fixedly connected to the support base 21, and the upper end of the upper universal ball 24 is fixedly connected to the damping plate 23. The support column 25 is fixedly installed on the top of the damping plate 23, and the top of the support column 25 is fixedly installed on the bottom of the substation base 4. The flexible connecting column 26 is fixedly installed... The hydraulic shock absorber 22, installed between the damping plate 23 and the support seat 21, includes a hydraulic cylinder 221, a piston rod 222, a mounting seat 223, and a damping spring 224. The hydraulic cylinder 221 is inserted and installed at the top of the lower universal ball 24. The piston rod 222 is inserted and movably installed at the middle of the top of the hydraulic cylinder 221. The mounting seat 223 is fixedly installed at the top of the piston rod 222. The top of the mounting seat 223 is installed at the bottom of the upper universal ball 24. The damping spring 224 is sleeved and installed on the outer surface of the piston rod 222. By setting the damping spring 224 and the hydraulic cylinder 221, the hydraulic shock absorber 22 has a dual damping mechanism. Furthermore, by setting the damping spring 224, the hydraulic shock absorber 22 can be reset by the damping spring 224 after being compressed.

[0020] Multiple omnidirectional balls 24 are provided, and the multiple omnidirectional balls 24 are respectively installed on the top end of the support base 21 and the bottom end of the damping plate 23. The omnidirectional ball 24 includes a positioning seat and a movable ball. The positioning seat is fixedly installed on the top end of the support base 21 and the damping plate 23. The movable ball is embedded in the inner side of the positioning seat. The top surface of the mounting seat 223 and the lower end surface of the hydraulic cylinder 221 are fixedly connected to the movable ball. By introducing the omnidirectional ball 24 structure between the support base 21 and the damping plate 23, this design constitutes a low-friction, multi-degree-of-freedom sliding interface, allowing the damper to translate and rotate slightly in any direction in the horizontal plane, thereby converting the horizontal and torsional vibration impacts into the rolling friction of the omnidirectional ball 24, realizing the primary decoupling and buffering of multidimensional vibrations.

[0021] The top surface of the mounting base 223 and the lower surface of the hydraulic cylinder 221 are both designed as arc-shaped concave surfaces. The arc-shaped concave surfaces allow the mounting base 223 and the hydraulic cylinder 221 to better fit with the universal ball 24, increasing the contact area and improving the stability and reliability of the installation. This frustum structure enables the support base 21 to enhance the overturning resistance of the entire equipment. When subjected to external forces, it is not easy to tip over, ensuring the safe operation of the equipment. The three hydraulic shock absorbers 22 are evenly distributed on the three vertices of the equilateral triangle, which makes the shock absorption effect on the equipment more uniform in all directions.

[0022] Three hydraulic shock absorbers 22 are provided, and the three hydraulic shock absorbers 22 are respectively installed between two corresponding universal balls 24. The three hydraulic shock absorbers 22 are arranged in an equilateral triangle. The support base 21 is set as a frustum structure with a wider top and a narrower bottom. The flexible connecting column 26 is located at the center of the upper end of the support base 21. The three hydraulic shock absorbers 22 are located at the center of the flexible connecting column 26. The hydraulic shock absorbers 22 are connected between the support base 21 and the damping plate 23 with a specific angle and spatial arrangement. This composite system uses springs to provide elastic support and reset capability, and at the same time uses the damping effect of hydraulic oil to efficiently dissipate vibration kinetic energy. Its spatially coordinated arrangement allows the vibration to be effectively absorbed by the compression or stretching of the system, regardless of the direction from which it comes.

[0023] The flexible connecting column 26 includes a centrally located traction steel wire rope 261. Positioning discs 262 are fixedly connected to both the upper and lower ends of the traction steel wire rope 261. The two sets of positioning discs 262 are fixedly connected to the top of the support base 21 and the bottom of the damping plate 23, respectively. A circular array of spiral compression rods 263 is arranged around the traction steel wire rope 261. Both the upper and lower ends of the spiral compression rods 263 are fixedly connected to the positioning discs 262. The spiral compression rods 263 can be compressed to store elastic potential energy. The flexible connecting column 26 is traction-connected between the positioning discs 262 at both ends, thus limiting the length of the positioning discs 262. The array of bendable spiral compression rods 263 limits the range of motion between the support base 21 and the damping plate 23, preventing the universal balls 24 at both ends from sliding during vibration and causing the hydraulic shock absorber 22 to tilt. Furthermore, the spiral compression rods 263 improve the connection strength between the support base 21 and the damping plate 23 while also providing a damping effect.

[0024] Working Principle: When the substation is subjected to external vibrations, such as ground vibrations or bumps during transportation, the vibration is first transmitted to the support base 21. Since multiple universal balls 24 are installed on both the support base 21 and the damping plate 23, and these universal balls 24 have multi-directional rotation characteristics, they enable relative movement between the support base 21 and the damping plate 23 at multiple angles, thus flexibly responding to vibrations from different directions. The multiple universal balls 24 redistribute the load through coordinated sliding, effectively avoiding single-point overload. During vibration transmission, the three hydraulic shock absorbers 22 installed between two corresponding universal balls 24 begin to function. Taking a single hydraulic shock absorber 22 as an example, the vibration causes the upper universal ball 24 to... 4. Displacement occurs, which in turn moves the mounting base 223 at its bottom downwards. The mounting base 223 then pushes the piston rod 222 downwards within the hydraulic cylinder 221. At this time, the hydraulic oil within the hydraulic cylinder 221 is compressed, generating a damping force. This damping force hinders the rapid movement of the piston rod 222, thereby consuming some vibration energy and providing a damping effect. Simultaneously, the damping spring 224, sleeved on the outer surface of the piston rod 222, also deforms. When the piston rod 222 moves downwards, the damping spring 224 is compressed, storing elastic potential energy. When the vibration weakens or disappears, the damping spring 224 releases the stored elastic potential energy, pushing the piston rod 222 upwards, causing... The hydraulic shock absorber 22 returns to its initial state, preparing for the next shock absorption. Furthermore, the elasticity of the shock-absorbing spring 224 further buffers the vibration, working in conjunction with the damping effect of the hydraulic cylinder 221 to enhance the shock absorption effect. Simultaneously, after being vibrated, the spiral compression rod 263 and the traction wire rope 261 are supported between the positioning plate 262, compressing the support seat 21 and the shock-absorbing plate 23 to ensure support. This prevents the universal ball 24 from leaving its support range during rotation, allowing the multi-directional shock absorption mechanism 5 to be supported under the substation base 4 during vibration. Through the combined action of multiple universal balls 24 and three hydraulic shock absorbers 22, most of the vibration energy is consumed and buffered, achieving horizontal and vertical shock absorption. The multi-degree-of-freedom vibration damping in both the vertical and torsional directions significantly reduces the risk of excessive displacement of equipment such as transformers and high-voltage switches due to vibration. The vibration ultimately transmitted to the damping plate 23 has been greatly reduced. The damping plate 23 transmits a relatively stable supporting force to the substation base 4 through the support column 25, and then to the substation frame 3, substation wall 2, and the entire substation structure installed on the top of the substation base 4. This effectively protects the electrical equipment inside the substation, solves the problem of poor vibration damping effect of traditional rigid connections under combined vibration, and improves the reliability of power supply. This design is especially suitable for areas with frequent earthquakes or complex terrain, and can ensure the stable and safe operation of equipment in a vibration environment.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated substation with a multi-directional cooperative vibration damping structure, comprising a substation base (4), characterized in that: The substation base (4) is fixedly connected to the upper end of the substation frame (3), the substation frame (3) is filled with substation wall (2), the substation frame (3) is fixedly connected to the upper end of the substation top cover (1), and the substation base (4) is fixedly provided with a multi-directional shock absorption mechanism (5). The multi-directional damping mechanism (5) includes a support base (21), a hydraulic damper (22), a damping plate (23), a universal ball (24), a support column (25), and a flexible connecting column (26). The hydraulic damper (22) is provided with universal balls (24) at both the upper and lower ends. The lower end of the universal ball (24) is fixedly connected to the support base (21), and the upper end of the universal ball (24) is fixedly connected to the damping plate (23). The support column (25) is fixedly installed on the top of the damping plate (23), and the top of the support column (25) is fixedly installed on the bottom of the substation base (4). The flexible connecting column (26) is fixedly installed between the damping plate (23) and the support base (21).

2. A prefabricated substation with a multi-directional cooperative vibration reduction structure according to claim 1, characterized in that: The hydraulic shock absorber (22) includes a hydraulic cylinder (221), a piston rod (222), a mounting base (223), and a shock-absorbing spring (224). The hydraulic cylinder (221) is inserted and installed at the top of the lower universal ball (24). The piston rod (222) is inserted and movably installed at the middle of the top of the hydraulic cylinder (221). The mounting base (223) is fixedly installed at the top of the piston rod (222). The top of the mounting base (223) is installed at the bottom of the upper universal ball (24). The shock-absorbing spring (224) is sleeved and installed on the outer surface of the piston rod (222).

3. A prefabricated substation with a multi-directional cooperative vibration reduction structure according to claim 2, characterized in that: Multiple universal balls (24) are provided. The multiple universal balls (24) are respectively installed on the top of the support base (21) and the bottom of the shock absorber (23). The universal ball (24) includes a positioning seat and a movable ball. The positioning seat is fixedly installed on the top of the support base (21) and the shock absorber (23). The movable ball is embedded in the inner side of the positioning seat. The top surface of the mounting seat (223) and the lower end surface of the hydraulic cylinder (221) are fixedly connected to the movable ball.

4. A prefabricated substation with a multi-directional cooperative vibration reduction structure according to claim 3, characterized in that: The top surface of the mounting base (223) and the bottom surface of the hydraulic cylinder (221) are both set as arc-shaped concave surfaces.

5. A prefabricated substation with a multi-directional cooperative vibration reduction structure according to claim 1, characterized in that: The hydraulic shock absorber (22) is provided in three parts, and the three hydraulic shock absorbers (22) are respectively installed between the two corresponding universal balls (24) above and below. The three hydraulic shock absorbers (22) adopt an equilateral triangle layout.

6. A prefabricated substation with a multi-directional cooperative vibration reduction structure according to claim 5, characterized in that: The support base (21) is configured as a frustum structure that is wider at the top and narrower at the bottom. The flexible connecting column (26) is located at the center of the upper end of the support base (21), and three hydraulic shock absorbers (22) are located at the center of the flexible connecting column (26).

7. A prefabricated substation with a multi-directional cooperative vibration reduction structure according to claim 1, characterized in that: The flexible connecting column (26) includes a traction steel wire rope (261) set in the center. The upper and lower ends of the traction steel wire rope (261) are fixedly connected to positioning discs (262). The two sets of positioning discs (262) are fixedly connected to the top of the support base (21) and the bottom of the shock absorber (23), respectively. A spiral compression rod (263) is arranged in a circular array around the traction steel wire rope (261). The upper and lower ends of the spiral compression rod (263) are fixedly connected to the positioning discs (262). The spiral compression rod (263) can be compressed and store elastic potential energy.

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