Interactive displacement amplification type wide shock isolation device and method for converter station valve hall

Abstract

The invention belongs to the technical field of power transmission and transformation projects, and provides an interactive displacement amplification type wide shock isolation device and method for a converter station valve hall. The system comprises a top rubber block, a side plate, a transverse energy consumption device, a connecting rod, a displacement amplifier, a longitudinal damper, a reed, a fixing rod and a base. One end of each side plate is connected to the two ends of the top rubber block, and the other end of each side plate is inserted into the transverse energy dissipation device to be connected so that transverse displacement can be conducted through the transverse energy dissipation device. The side face of the transverse energy dissipation device is fixed to a cavity type base. The lower portion of the transverse energy dissipation device is connected with the bottom face of the base through a fixing rod. The lower portion of the top rubber block and the connecting rod are fixed into a whole, the lower portion of the connecting rod is connected with the displacement amplifier, and the lower portion of the displacement amplifier is connected with the longitudinal damper. The lower portion of the longitudinal damper is a cambered surface and attached to the cambered surface of the base, and the two sides of the longitudinal damper are each attached to one reed. Synchronous and efficient dissipation of horizontal vibration and vertical vibration is achieved.

Description

Technical Field

[0001] This invention belongs to the field of power transmission and transformation engineering technology, and in particular relates to an interactive displacement amplification wide-amplitude vibration isolation device and method for valve hall of converter station. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Converter stations are widely distributed, inevitably located in high-seismic-intensity areas. Typically, their structures are large-span steel structures, making them susceptible to damage under high-intensity earthquakes, leading to power system outages and severe economic losses. Traditional vibration damping devices (such as viscous dampers and friction dampers) usually only control vibrations in one direction, making it difficult to meet the needs of multi-directional vibration damping. Furthermore, existing bidirectional vibration damping devices often suffer from complex construction, low energy efficiency, and insufficient reset capability. For example, some devices use multiple independent dampers combined to achieve bidirectional vibration damping, resulting in large size and poor coordination; other devices, while capable of bidirectional energy dissipation, lack adaptive adjustment capabilities and struggle to adapt to vibration inputs of varying amplitudes. Summary of the Invention

[0004] To address the technical problems mentioned above, this invention provides an interactive displacement amplification wide-amplitude vibration isolation device and method for converter station valve halls. It can achieve synchronous and efficient dissipation of horizontal and vertical vibrations through innovative coupling of lateral energy dissipation mechanism and longitudinal damping unit, combined with displacement amplification mechanism and multiple energy dissipation paths.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The first aspect of the present invention provides an interactive displacement amplification wide-amplitude vibration isolation device for a converter station valve hall.

[0006] An interactive displacement-amplified wide-amplitude vibration isolation device for a converter station valve hall includes a top rubber block, side plates, a lateral energy dissipation device, a connecting rod, a displacement amplifier, a longitudinal damper, a spring, a fixing rod, and a base. The upper part of the top rubber block is fixed to the power transmission and transformation engineering structure by clamps; one end of each side plate is connected to both ends of the top rubber block, and the other end of each side plate is inserted into the horizontal energy dissipation device for connection, so as to perform lateral displacement through the horizontal energy dissipation device; the side of the horizontal energy dissipation device is fixed on the hollow base; the bottom surface of the base is provided with an arc surface; the lower part of the horizontal energy dissipation device is connected to the bottom surface of the base through a fixing rod. The lower part of the top rubber block is fixed to the connecting rod and forms a whole. The lower part of the connecting rod is connected to the displacement amplifier, and the lower part of the displacement amplifier is connected to the longitudinal damper. The lower part of the longitudinal damper is an arc surface and fits into the arc surface of the base. The two sides of the longitudinal damper are respectively fitted with the spring.

[0007] In one embodiment, the transverse energy dissipation device includes a housing and a rotating shaft, a first friction rod, a second friction rod, a return spring, and a sliding groove disposed therein; the rotating shaft is connected to the first friction rod, the return spring, and the second friction rod in sequence from top to bottom; the other end of the first friction rod and the second friction rod are each provided with a friction plate, and the ends are inserted into the sliding groove; the return spring is located in a cavity and does not interfere with the first friction rod and the second friction rod.

[0008] In one embodiment, the longitudinal damper includes a steel outer shell and its internal movable connecting rod, rotating wheel, damping fluid, partition layer one, return spring, partition layer two, and a small weight ball. Partition layer one and partition layer two divide the steel outer shell into three chambers. The uppermost chamber is filled with damping fluid, and the middle chamber contains a return spring. The bottom surface of the lower chamber is arc-shaped and fits against the arc surface of the base. The small weight ball is placed in the lower chamber. The movable connecting rod is located in the upper chamber. The upper end of the movable connecting rod is connected to a displacement amplifier, and the lower end is fixed to partition layer one. Toothed grooves are provided on both sides of the movable connecting rod and match the rotating wheel.

[0009] In one implementation, the area of ​​the upper port of the displacement amplifier is larger than the area of ​​the lower port.

[0010] In one embodiment, rubber pads are provided at the ends of the connecting rod and the vertical damper that are connected to the displacement amplifier.

[0011] In one embodiment, the displacement amplifier cavity is filled with oil.

[0012] In one embodiment, the number of the rotating wheels is at least two, each consisting of a rotating shaft and fan blades. The rotating wheels are alternately placed on both sides of the movable connecting rod, and the rotating wheels will not collide with each other when rotating.

[0013] In one embodiment, the number of reeds is four, and the arc surfaces of the reeds are all tangent to the side of the longitudinal damper. The two ends of the reeds are respectively fixed to the transverse energy dissipation device and the base.

[0014] In one embodiment, the base adopts a semi-enclosed shell, and the arc surface of the base allows the longitudinal damper to slide and restricts the displacement of the longitudinal damper.

[0015] A second aspect of the present invention provides a seismic isolation method based on an interactive displacement amplification wide-amplitude seismic isolation device for a converter station valve hall.

[0016] A seismic isolation method based on an interactive displacement-amplified wide-amplitude seismic isolation device for a converter station valve hall includes: When the power transmission and transformation project structure is subjected to external vibration loads, the vibration energy is first transferred to the top rubber block through the clamp. The top rubber block absorbs the high-frequency vibration component through its elastic deformation and transfers the lateral vibration to the lateral energy dissipation device through the side plate. The side plate slides in the lateral energy dissipation device and pushes the friction rod to squeeze the side wall of the sliding groove through the rotating shaft. The lateral vibration energy is dissipated through the friction between the friction plate and the sliding groove. At the same time, the return spring provides a reverse restoring force after being compressed, so that the friction rod is reset to cope with subsequent vibrations. The vertical vibration component is transmitted to the displacement amplifier through the connecting rod. The amplified displacement drives the movable connecting rod to move downward, so that the trapezoidal toothed grooves on both sides of the rod mesh with the wheel, causing the wheel assembly to rotate at high speed. The viscous shear force and inertial resistance generated by the wheel assembly in the damping fluid further dissipate energy. At the same time, the weighted balls in the lower chamber are excited by vibration and roll and collide, which enhances the energy dissipation effect through impact damping. The return spring in the middle chamber of the longitudinal damper provides restoring force when the vibration load decreases, pushing the movable linkage to return to its original position. The arc surface at the bottom of the damper slides with the arc surface of the base, allowing for adaptive adjustment of multi-directional displacement. The springs on both sides limit the lateral displacement of the longitudinal damper through the arc-shaped preload and assist its return to its original position.

[0017] The beneficial effects of this invention are: This invention proposes an interactive displacement-amplified wide-amplitude vibration isolation device for converter station valve halls. Through innovative coupling of a lateral energy dissipation mechanism and a longitudinal damping unit, combined with a displacement amplification mechanism and multiple energy dissipation paths, it achieves synchronous and efficient dissipation of horizontal and vertical vibrations. This device represents a significant breakthrough over existing technologies in terms of structural compactness, multi-directional adaptability, and self-resetting performance. It can effectively suppress the dynamic response of power transmission and transformation engineering structures under horizontal and vertical vibrations. Through the coupled design of a bidirectional energy dissipation mechanism and displacement amplification technology, it significantly improves the energy dissipation efficiency and self-resetting performance of power transmission and transformation engineering structures under complex vibration environments, providing a reliable solution for multi-dimensional vibration control of power transmission and transformation engineering structures.

[0018] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0020] Figure 1 This is a cross-sectional view of an interactive displacement amplified wide-width seismic isolation device for a converter station valve hall according to an embodiment of the present invention. Figure 2 This is a top view of the lateral energy dissipation device according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of the transverse energy-consuming device according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of the displacement amplification device according to an embodiment of the present invention; Figure 5 This is a cross-sectional view of the longitudinal damper according to an embodiment of the present invention.

[0021] In the diagram: 1. Top rubber block; 2-1 Side plate one; 2-2 Side plate two; 3-1 Lateral energy dissipation device one; 3-2 Lateral energy dissipation device two; 4. Connecting rod; 5. Displacement amplifier; 6. Longitudinal damper; 7-1 Spring one; 7-2 Spring two; 8-1 Fixing rod one; 8-2 Fixing rod two; 9. Base; 10. Clamp; 3-1-1 Outer shell; 3-1-2 Rotating shaft; 3-1-3 Friction rod one; 3-1-4 Friction rod two; 3-1-5 Reset spring. Spring, 3-1-6 Sliding groove; 4 Connecting rod, 5-1 Steel shell, 5-2 Oil, 5-3 Rubber pad one, 5-4 Rubber pad two, 6-2 Movable connecting rod; 6-1 Steel shell, 6-2 Movable connecting rod, 6-3 Rotary wheel one, 6-4 Rotary wheel two, 6-5 Rotary wheel three, 6-6 Rotary wheel four, 6-7 Damping fluid, 6-8 Partition layer one, 6-9 Return spring one, 6-10 Return spring two, 6-11 Partition layer two, 6-12 Weight ball. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] In this invention, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only to facilitate the description of the structural relationships of the various components or elements of this invention and do not specifically refer to any component or element in this invention. They should not be construed as limiting the invention.

[0026] In this invention, terms such as "fixed connection," "connected," and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0027] like Figure 1 As shown, the interactive displacement amplification wide-amplitude vibration isolation device for converter station valve hall according to an embodiment of the present invention includes a top rubber block 1, side plates, a lateral energy dissipation device, a connecting rod 4, a displacement amplifier 5, a longitudinal damper 6, a spring, a fixing rod, and a base 9. The upper part of the top rubber block 1 is fixed to the power transmission and transformation engineering structure by a clamp 10. One end of each side plate is connected to both ends of the top rubber block 1, and the other end of each side plate is inserted into the lateral energy dissipation device for lateral displacement. The side of the lateral energy dissipation device is fixed to the cavity-type base 9. The bottom surface of the base 9 is provided with an arc surface. The lower part of the lateral energy dissipation device is connected to the bottom surface of the base 9 by a fixing rod. The lower part of the top rubber block 1 is fixed to the connecting rod 4 and forms a whole. The displacement amplifier 5 is connected to the lower part of the connecting rod 4, and the lower part of the displacement amplifier 5 is connected to the longitudinal damper 6. The lower part of the longitudinal damper 6 is an arc surface and fits against the arc surface of the base 9. The two sides of the longitudinal damper 6 are respectively fitted with springs.

[0028] Specifically, the interactive displacement amplification wide-amplitude vibration isolation device for the valve hall of the converter station in this embodiment includes a top rubber block 1, side plate 1 2-1, side plate 2-2, lateral energy dissipation device 1 3-1, lateral energy dissipation device 2 3-2, connecting rod 4, displacement amplifier 5, longitudinal damper 6, spring 1 7-1, spring 2 7-2, fixing rod 1 8-1, fixing rod 2 8-2, base 9, and clamp 10; the top rubber block 1 is fixed to the power transmission and transformation engineering structure by clamp 10, and side plates 1 2-1 and 2-2 are symmetrically arranged on both sides of the top rubber block 1. The lower ends of the two 2-2 are respectively inserted into the transverse energy dissipation device 1 3-1 and the transverse energy dissipation device 2 3-2; the connecting rod 4 is fixed to the top rubber block 1 and extends downward to the interior of the displacement amplifier 5; the displacement amplifier 5 is fixed to the lower end of the top rubber block 1, and its bottom is connected to the movable connecting rod 6-2 of the longitudinal damper 6 through the oil cavity; the bottom arc surface of the longitudinal damper 6 slides with the arc surface of the base 9, and the two sides are limited by the spring 1 7-1 and the spring 2 7-2; the fixing rod 1 8-1 and the fixing rod 2 8-2 are respectively connected to the transverse energy dissipation device 1 3-1, the transverse energy dissipation device 2 3-2 and the base 9.

[0029] like Figure 2 and Figure 3 As shown, the transverse energy dissipation device 1 3-1 and the transverse energy dissipation device 2 3-2 have the same structure. Taking the transverse energy dissipation device 1 3-1 as an example, it includes a shell 3-1-1, a rotating shaft 3-1-2, a friction rod 1 3-1-3, a friction rod 2 3-1-4, a return spring 3-1-5, and a sliding groove 3-1-6. Two sliding grooves 3-1-6 are symmetrically opened inside the shell 3-1-1. The rotating shaft 3-1-2 is divided into three layers: the upper layer is hinged to the friction rod 1 3-1-3, the middle layer is fixed to the return spring 3-1-5, and the lower layer is hinged to the friction rod 2 3-1-4. Friction plates are provided at the ends of the friction rod 1 3-1-3 and the friction rod 2 3-1-4, which are inserted into the sliding groove 3-1-6. The return spring 3-1-5 is located at the center of the cavity of the shell 3-1-1, and the preload is 15% of the total length.

[0030] The displacement amplifier 5 adopts a variable cross-section cavity design, such as... Figure 4 As shown, it includes a steel shell 5-1, oil 5-2, rubber pad one 5-3, and rubber pad two 5-4; the area of ​​the upper port is larger than the area of ​​the lower port. The displacement amplifier of this embodiment adopts a variable cross-section cavity design, which can adjust the ratio of the upper and lower port areas according to actual needs, flexibly adjust the displacement amplification factor, and adapt to working conditions with different vibration amplitudes.

[0031] In this embodiment of the invention, the vertical displacement is amplified by the principle of hydraulic amplification. The cavity is filled with oil 5-2, and the ends of the movable connecting rod 6-2 of the connecting rod 4 and the longitudinal damper 6 are respectively provided with rubber pad 5-3 and rubber pad 5-4 to reduce impact.

[0032] like Figure 5 As shown, the longitudinal damper 6 includes a steel outer shell 6-1, a movable connecting rod 6-2, a first rotating wheel 6-3, a second rotating wheel 6-4, a third rotating wheel 6-5, a fourth rotating wheel 6-6, damping fluid 6-7, a first partition layer 6-8, a first return spring 6-9, a second return spring 6-10, a second partition layer 6-11, and a small weight ball 6-12. The first partition layer 6-8 and the second partition layer 6-11 divide the damper into three chambers: the upper chamber is filled with damping fluid 6-7, and the movable connecting rod 6-2 has toothed grooves on both sides that mesh with the first rotating wheel 6-3, the second rotating wheel 6-4, the third rotating wheel 6-5, and the fourth rotating wheel 6-6 to drive the rotating wheels to dissipate energy; the middle chamber is equipped with the first return spring 6-9 and the second return spring 6-10 to provide vertical restoring force; the bottom of the lower chamber has a convex surface that fits against the arc surface of the base 9, and a small weight ball 6-12 is built into it to enhance the energy dissipation effect.

[0033] Spring 7-1 and spring 7-2 are arc-shaped and fit the side of the longitudinal damper 6, providing lateral restraint and assisting in reset; fixed rod 8-1 and fixed rod 8-2 connect the lateral energy dissipation device 3-1, the lateral energy dissipation device 3-2 and the base 9, enhancing overall stability.

[0034] The base 9 adopts a semi-enclosed CFRP shell, is immovable, and provides support. The bottom of the base 9 has an arc surface that mates with the convex surface of the longitudinal damper 6, allowing sliding while limiting excessive displacement. In this embodiment of the invention, the longitudinal damper uses an arc-shaped base design, allowing necessary sliding displacement while limiting excessive deformation; combined with the lateral constraint mechanism of the spring, it ensures that the device maintains a stable working state during bidirectional vibration. The CFRP material used in the main reinforcing components of this embodiment of the invention combines high strength, lightweight, corrosion resistance, and excellent durability, significantly extending the service life of the device.

[0035] The working principle of the interactive displacement amplification wide-amplitude seismic isolation device for the valve hall of a converter station according to this embodiment of the invention is as follows: When the power transmission and transformation structure is subjected to external vibration loads, the vibration energy is first transferred to the top rubber block 1 through the clamp 10. The top rubber block 1 absorbs the high-frequency vibration component through its elastic deformation and transfers the lateral vibration through side plate 1 2-1 and side plate 2-2 to the lateral energy dissipation device 1 3-1 and lateral energy dissipation device 2 3-2. Side plate 1 2-1 and side plate 2-2 slide in the lateral energy dissipation device, and push the friction rod 1 3-1-3 and the return spring 3-1-5 to press the side wall of the sliding groove through the rotating shaft. The lateral vibration energy is dissipated by the friction between the friction plate and the sliding groove 3-1-6. At the same time, the friction rod 2 3-1-4 provides a reverse restoring force after being compressed, so that the friction rod returns to its original position to cope with subsequent vibrations.

[0036] The vertical vibration component is transmitted to the displacement amplifier 5 via the connecting rod 4. Because the displacement amplifier 5 employs a variable cross-section cavity design with an upper port area larger than the lower port area, the minute vertical displacement of the connecting rod 4 is amplified by the incompressibility of the fluid 5-2 within the cavity and acts hydraulically on the movable connecting rod 6-2 of the longitudinal damper 6. The amplified displacement drives the movable connecting rod 6-2 downwards, causing its trapezoidal toothed grooves on both sides to mesh with the first to fourth rotating wheels 6-6, driving the wheel assembly to rotate at high speed. The viscous shear force and inertial resistance generated in the damping fluid 6-7 of the wheel assembly further dissipate energy; simultaneously, the weighted small ball 6-12 in the lower chamber undergoes rolling collisions due to vibration excitation, enhancing the energy dissipation effect through impact damping.

[0037] The middle chamber of the longitudinal damper 6 is equipped with a return spring 6-9 and a return spring 6-10, which provide restoring force when the vibration load decreases, pushing the movable connecting rod 6-2 to return to its original position. The convex surface at the bottom of the damper slides in conjunction with the arc surface of the base 9, allowing for adaptive adjustment of multi-directional displacement; the spring plates 7-1 and 7-2 on both sides limit the lateral displacement of the longitudinal damper 6 through arc-shaped preload and assist its return to its original position.

[0038] Lateral energy dissipation device 1 3-1 and lateral energy dissipation device 2 3-2 are connected to base 9 via fixing rod 1 8-1 and fixing rod 2 8-2, forming a stable support structure to prevent the entire device from overturning. The semi-enclosed shell of base 9 engages with the convex surface of longitudinal damper 6 through its curved surface, limiting the maximum displacement of longitudinal damper 6 and ensuring the safety of the device under strong earthquakes.

[0039] The interactive displacement-amplified wide-amplitude seismic isolation device for converter station valve halls in this invention achieves bidirectional vibration reduction and energy dissipation of power transmission and transformation engineering structures, effectively suppressing displacement of the structures under horizontal and vertical vibration. Through the coupled design of a bidirectional energy dissipation mechanism and displacement amplification technology, the interactive displacement-amplified wide-amplitude seismic isolation device for converter station valve halls in this invention significantly improves the energy dissipation efficiency and self-resetting performance of power transmission and transformation engineering structures under complex vibration environments.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An interactive displacement-amplified wide-amplitude vibration isolation device for a converter station valve hall, characterized in that, It includes a top rubber block, side plates, lateral energy dissipation device, connecting rod, displacement amplifier, longitudinal damper, spring, fixing rod and base; The upper part of the top rubber block is fixed to the power transmission and transformation engineering structure by clamps; one end of each side plate is connected to both ends of the top rubber block, and the other end of each side plate is inserted into the horizontal energy dissipation device for connection, so as to perform lateral displacement through the horizontal energy dissipation device; the side of the horizontal energy dissipation device is fixed on the hollow base; the bottom surface of the base is provided with an arc surface; the lower part of the horizontal energy dissipation device is connected to the bottom surface of the base through a fixing rod. The lower part of the top rubber block is fixed to the connecting rod and forms a whole. The lower part of the connecting rod is connected to the displacement amplifier, and the lower part of the displacement amplifier is connected to the longitudinal damper. The lower part of the longitudinal damper is an arc surface and fits into the arc surface of the base. The two sides of the longitudinal damper are respectively fitted with the spring.

2. The interactive displacement amplification wide-amplitude vibration isolation device for converter station valve hall as described in claim 1, characterized in that, The lateral energy dissipation device includes a housing and a rotating shaft, friction rod one, friction rod two, a return spring, and a sliding groove disposed therein; the rotating shaft is connected to friction rod one, the return spring, and friction rod two in sequence from top to bottom; friction plates are provided at the other ends of friction rod one and friction rod two, and the ends are inserted into the sliding groove; the return spring is located in a cavity and does not interfere with friction rod one and friction rod two.

3. The interactive displacement amplification wide-amplitude vibration isolation device for converter station valve hall as described in claim 1, characterized in that, The longitudinal damper includes a steel outer shell and its internal movable connecting rod, rotating wheel, damping fluid, partition layer one, return spring, partition layer two, and a small weight ball. Partition layer one and partition layer two divide the steel outer shell into three chambers. The uppermost chamber is filled with damping fluid, and the middle chamber contains a return spring. The bottom surface of the lower chamber is arc-shaped and fits against the arc surface of the base. The small weight ball is placed in the lower chamber. The movable connecting rod is located in the upper chamber. The upper end of the movable connecting rod is connected to a displacement amplifier, and the lower end is fixed to partition layer one. Toothed grooves are provided on both sides of the movable connecting rod and match the rotating wheel.

4. The interactive displacement amplification wide-amplitude vibration isolation device for converter station valve hall as described in claim 1, characterized in that, The upper port area of ​​the displacement amplifier is larger than the lower port area.

5. The interactive displacement amplification wide-amplitude vibration isolation device for converter station valve hall as described in claim 1, characterized in that, Rubber pads are provided at the ends of the connecting rod and the vertical damper that connect to the displacement amplifier.

6. The interactive displacement amplification wide-amplitude vibration isolation device for converter station valve hall as described in claim 1, characterized in that, The displacement amplifier cavity is filled with oil.

7. The interactive displacement amplification wide-amplitude vibration isolation device for converter station valve hall as described in claim 1, characterized in that, The number of the rotating wheels is at least two, each consisting of a rotating shaft and fan blades. The rotating wheels are alternately placed on both sides of the movable connecting rod, and the rotating wheels will not collide with each other when rotating.

8. The interactive displacement amplification wide-amplitude vibration isolation device for converter station valve hall as described in claim 1, characterized in that, The number of reeds is four, and the arc surface of each reed is tangent to the side of the longitudinal damper. The two ends of the reeds are fixed to the transverse energy dissipation device and the base, respectively.

9. The interactive displacement amplification wide-amplitude vibration isolation device for converter station valve hall as described in claim 1, characterized in that, The base adopts a semi-enclosed shell, and the arc surface of the base allows the longitudinal damper to slide and restricts the displacement of the longitudinal damper.

10. A seismic isolation method based on an interactive displacement-amplified wide-amplitude seismic isolation device for a converter station valve hall as described in any one of claims 1-9, characterized in that, include: When the power transmission and transformation project structure is subjected to external vibration loads, the vibration energy is first transferred to the top rubber block through the clamp. The top rubber block absorbs the high-frequency vibration component through its elastic deformation and transfers the lateral vibration to the lateral energy dissipation device through the side plate. The side plate slides in the lateral energy dissipation device and pushes the friction rod to squeeze the side wall of the sliding groove through the rotating shaft. The lateral vibration energy is dissipated through the friction between the friction plate and the sliding groove. At the same time, the return spring provides a reverse restoring force after being compressed, so that the friction rod is reset to cope with subsequent vibrations. The vertical vibration component is transmitted to the displacement amplifier through the connecting rod. The amplified displacement drives the movable connecting rod to move downward, so that the trapezoidal toothed grooves on both sides of the rod mesh with the wheel, causing the wheel assembly to rotate at high speed. The viscous shear force and inertial resistance generated by the wheel assembly in the damping fluid further dissipate energy. At the same time, the weighted balls in the lower chamber are excited by vibration and roll and collide, which enhances the energy dissipation effect through impact damping. The return spring in the middle chamber of the longitudinal damper provides restoring force when the vibration load decreases, pushing the movable linkage to return to its original position. The arc surface at the bottom of the damper slides with the arc surface of the base, allowing for adaptive adjustment of multi-directional displacement. The springs on both sides limit the lateral displacement of the longitudinal damper through the arc-shaped preload and assist its return to its original position.

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