Suspension type converter valve corner type damping device and design method

Abstract

The invention provides a suspension type converter valve corner type damping device and a design method, and the device comprises at least two groups of angular displacement type dampers which are respectively disposed at the corner positions of the top corner points of a suspension mechanism at the top of a converter valve. Two ends of the angular displacement type shock absorber are respectively connected with a top steel structure of the converter valve hall and an upper flange of the suspension mechanism; according to the device, the angular displacement type shock absorber is arranged at the corner position of the top corner point of the suspension mechanism, so that the original equipment structure of the suspension type converter valve is not changed, the normal work of equipment and the inspection work of a trolley below the converter valve are not influenced, the process layout in a valve hall is not damaged, and other adjacent electric power facilities are not interfered; the method has relatively high engineering implementability; according to the method, by determining the initial yield force and the initial damping coefficient, a finite element simulation model can be rapidly built for simulation calculation, and therefore shock absorber type selection design is rapidly completed.

Description

Technical Field

[0001] This invention belongs to the field of seismic resistance technology for power facilities, specifically relating to a suspended converter valve corner type vibration damping device and its design method. Background Technology

[0002] Converter valves are among the most important electrical devices in converter stations, used for AC-DC and DC-AC conversion, and possessing core functions such as rectification and inversion. Conventional UHVDC transmission and transformation projects use suspended converter valves. Due to the suspended structure, the equipment has a long natural vibration period and significant displacement under seismic loads. Valve tower displacement can easily exceed design limits, pulling on other interconnected critical equipment (such as converter transformers). In severe cases, the interaction forces between the equipment can damage the converter valves and their interconnected devices. Due to regional topographical constraints, many converter stations and substations are inevitably built in areas prone to strong earthquakes, facing significant seismic risks. In past major earthquakes, the power facilities within these stations have suffered severe damage, causing not only huge economic losses but also seriously affecting earthquake relief efforts and social life.

[0003] In existing technologies, to address the potential large displacements of suspended converter valves in high-intensity seismic zones, a series of measures have been implemented for their installation. These include applying spring damping devices to the bottom and top of the valve as limiting measures, installing spring cable devices at the bottom of the equipment to restrict the horizontal displacement of the valve tower, and using tension insulators and spring-damper connectors to connect the bottom of the valve tower to the ground for displacement control. In other words, existing suspension converter valve vibration damping devices primarily employ either suspended spring damping devices at the top of the valve tower or damping devices between the bottom of the valve tower and the ground. However, these existing solutions are not readily applicable in practical engineering. The main reasons are that arranging suspended spring damping devices at the top of the valve tower increases the valve hall height and alters the valve hall structural design; ground-connected damping devices occupy excessive valve hall space and are prone to interfering with nearby power facilities. Furthermore, they also hinder the inspection of the equipment by the inspection trolley within the valve hall.

[0004] Therefore, in view of the problems existing in the above-mentioned technologies, how to effectively control the seismic displacement of the converter valve is an urgent technical problem to be solved without changing the structural design of the valve hall and the converter valve, without affecting the electrical function and operation and maintenance of the equipment during normal operation, and without interfering with other adjacent power facilities. Summary of the Invention

[0005] To overcome the shortcomings of the existing damping structure in the above-mentioned technology, which has excessive interference, the present invention proposes a suspension-type angle damping device for a converter valve. The damping device includes at least two sets of angular displacement dampers, which are respectively installed at the corner positions of the top corner of the suspension mechanism at the top of the converter valve.

[0006] The two ends of the angular displacement shock absorber are respectively connected to the top steel structure of the converter valve hall and the upper flange of the suspension mechanism.

[0007] Preferably, each group of angular displacement dampers contains two angular displacement dampers, which are arranged horizontally orthogonally.

[0008] Preferably, the number of groups of angular displacement shock absorbers is the same as the number of top corner points of the suspension mechanism.

[0009] Preferably, the angular displacement shock absorber includes a central arc-shaped connecting plate, two arc-shaped connecting side plates respectively disposed on both sides of the central arc-shaped connecting plate, and a viscoelastic energy dissipation layer disposed between the central arc-shaped connecting plate and the central arc-shaped connecting plate.

[0010] Preferably, the central arc-shaped connecting plate and the arc-shaped connecting side plate are circular arc plates with the same radius and the same curvature.

[0011] Preferably, the central arc-shaped connecting plate and the arc-shaped connecting side plate are arranged in parallel and have circumferential misalignment.

[0012] Preferably, the centers of the central arc-shaped connecting plate and the arc-shaped connecting side plate overlap, and the overlapping center overlaps with the hinge point of the suspension mechanism on the top steel structure.

[0013] Based on the same inventive concept, this invention also provides a design method for a suspended converter valve corner damping device, comprising:

[0014] Based on the self-weight and natural frequency of the converter valve, the initial yield force and initial damping coefficient of the angular displacement damper in the damping device are determined.

[0015] Based on the initial yield force and the initial damping coefficient, determine the initial model and the corresponding mechanical parameters of the angular displacement shock absorber;

[0016] The mechanical parameters corresponding to the initial model are input into the pre-constructed finite element simulation model of the converter valve vibration reduction structure, and simulation calculations are performed under the ground motion time history to obtain the vibration reduction results of the initial model.

[0017] Determine whether the vibration reduction result of the initial model meets the set vibration reduction requirements. If it does, output the initial model and complete the vibration reduction device design. If it does not meet the requirements, reselect the angular displacement vibration damper based on the vibration reduction result of the initial model until the selected angular displacement vibration damper meets the set vibration reduction requirements and complete the vibration reduction device design.

[0018] The finite element simulation model of the damping structure of the converter valve is constructed based on the installation and connection structure of the converter valve and the damping device; the damping device adopts the damping device described above.

[0019] Preferably, the sum of the initial yield forces of all the angular displacement dampers in the damping device is 1 / 2 to 4 / 5 of the self-weight of the converter valve.

[0020] Preferably, the initial damping coefficient is determined according to the following formula:

[0021] c=mω n ξ / 2;

[0022] In the formula, c is the initial damping coefficient, m is the weight of the converter valve; ω n ξ is the natural frequency of the converter valve; ξ is the damping ratio of the converter valve's damping structure, which ranges from 0.03 to 0.08.

[0023] Preferably, determining the initial model and corresponding mechanical parameters of the angular displacement damper based on the initial yield force and the initial damping coefficient includes:

[0024] The initial mechanical parameters of the angular displacement damper are determined based on the approximate calculation formula of the initial damping coefficient.

[0025] Based on the initial yield force and the initial mechanical parameters, determine the initial model of the angular displacement shock absorber and the corresponding mechanical parameters of the initial model;

[0026] The approximate calculation formula is expressed as follows:

[0027]

[0028] In the formula, c is the initial damping coefficient, G" is the shear loss modulus, A is the shear area of ​​the viscoelastic energy dissipation layer, Tg is the site characteristic period, and h is the thickness of the viscoelastic energy dissipation layer.

[0029] Based on the same inventive concept, the present invention also provides a design system for a suspended converter valve corner damping device, comprising:

[0030] The initial value determination module is used to determine the initial yield force and initial damping coefficient of the angular displacement damper in the damping device based on the self-weight of the converter valve and its natural frequency.

[0031] The initial parameter determination module is used to determine the initial model and the corresponding mechanical parameters of the angular displacement shock absorber based on the initial yield force and the initial damping coefficient.

[0032] The simulation module is used to input the mechanical parameters corresponding to the initial model into a pre-built finite element simulation model of the converter valve vibration reduction structure, perform simulation calculations under the ground motion time history, and obtain the vibration reduction results of the initial model.

[0033] The selection and judgment module is used to determine whether the vibration reduction result of the initial model meets the set vibration reduction requirements. If it does, the initial model is output to complete the vibration reduction device design. If it does not meet the requirements, the angular displacement vibration damper is reselected based on the vibration reduction result of the initial model until the selected angular displacement vibration damper meets the set vibration reduction requirements, thus completing the vibration reduction device design.

[0034] The finite element simulation model of the damping structure of the converter valve is constructed based on the installation and connection structure of the converter valve and the damping device; the damping device adopts the damping device described above.

[0035] Preferably, the sum of the initial yield forces of all the angular displacement dampers in the damping device is 1 / 2 to 4 / 5 of the self-weight of the converter valve.

[0036] Preferably, the initial damping coefficient is determined according to the following formula:

[0037] c=mω n ξ / 2;

[0038] In the formula, c is the initial damping coefficient, m is the weight of the converter valve; ω n ξ is the natural frequency of the converter valve; ξ is the damping ratio of the converter valve's damping structure, which ranges from 0.03 to 0.08.

[0039] Preferably, determining the initial model and corresponding mechanical parameters of the angular displacement damper based on the initial yield force and the initial damping coefficient includes:

[0040] The initial mechanical parameters of the angular displacement damper are determined based on the approximate calculation formula of the initial damping coefficient.

[0041] Based on the initial yield force and the initial mechanical parameters, determine the initial model of the angular displacement shock absorber and the corresponding mechanical parameters of the initial model;

[0042] The approximate calculation formula is expressed as follows:

[0043]

[0044] In the formula, c is the initial damping coefficient, G" is the shear loss modulus, A is the shear area of ​​the viscoelastic energy dissipation layer, Tg is the site characteristic period, and h is the thickness of the viscoelastic energy dissipation layer.

[0045] Compared with the closest existing technology, the present invention has the following beneficial effects:

[0046] This invention provides a angular damping device for a suspended converter valve. The damping device includes at least two sets of angular displacement dampers, each disposed at the corner of the top corner of the suspension mechanism at the top of the converter valve. The two ends of each angular displacement damper are connected to the top steel structure of the converter valve hall and the upper flange of the suspension mechanism, respectively. This device, by arranging angular displacement dampers at the corner of the top corner of the suspension mechanism, does not alter the original equipment structure of the suspended converter valve, does not affect the normal operation of the equipment or the inspection work of the trolley below the converter valve, does not disrupt the process layout within the valve hall, and does not interfere with other adjacent power facilities, thus possessing strong engineering feasibility.

[0047] This invention also provides a design method for a suspended converter valve corner damping device, comprising: determining the initial yield force and initial damping coefficient of the rod-type damper in the damping device based on the self-weight and natural frequency of the converter valve; determining the initial model and corresponding mechanical parameters of the rod-type damper according to the initial yield force and the initial damping coefficient; inputting the mechanical parameters corresponding to the initial model into a pre-constructed finite element simulation model of the converter valve damping structure to perform simulation calculations under ground motion time history to obtain the damping result of the initial model; determining whether the damping result of the initial model meets the set damping requirements; if it does, outputting the initial model to complete the damping device design; if it does not meet the requirements, re-selecting the rod-type damper according to the damping result of the initial model until the selected rod-type damper meets the set damping requirements to complete the damping device design; this method, by clearly defining the initial yield force and initial damping coefficient, can quickly build a finite element simulation model for simulation calculation, thereby quickly completing the damper selection and design. Attached Figure Description

[0048] Figure 1 This invention provides a structural schematic diagram of a suspended converter valve corner type shock absorber.

[0049] Figure 2 for Figure 1 The left view;

[0050] Figure 3 A schematic diagram illustrating the connection relationship between a set of angular displacement shock absorbers and a suspension mechanism provided by the present invention;

[0051] Figure 4 This is a schematic diagram of the angular displacement shock absorber provided by the present invention;

[0052] Figure 5 for Figure 4 The left view;

[0053] Figure 6 This invention provides a schematic flowchart of a design method for a suspended converter valve corner damping device.

[0054] Figure 7 This is a schematic diagram of the hysteresis curve of the corner shock absorber in this invention;

[0055] Figure 8 This invention provides a schematic diagram of the design system structure of a suspended converter valve corner type vibration damping device;

[0056] Figure 9 A schematic diagram of an electronic device structure provided by the present invention;

[0057] Among them, 1. Converter valve; 2. Suspension mechanism; 3. Angular displacement shock absorber; 3-1. Central arc-shaped connecting plate; 3-2. Arc-shaped connecting side plate; 3-3. Viscoelastic energy dissipation layer; 4. Top steel structure. Detailed Implementation

[0058] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0059] Example 1:

[0060] This invention provides a suspension-type converter valve corner type shock absorption device, such as... Figure 1 and Figure 2 As shown, the shock absorption device includes: at least two sets of angular displacement shock absorbers 3, which are respectively installed at the corner positions of the top corner points of the suspension mechanism 2 at the top of the converter valve 1;

[0061] The two ends of the angular displacement shock absorber 3 are respectively connected to the top steel structure 4 of the converter valve hall and the upper flange of the suspension mechanism 2.

[0062] Given that my country is a country prone to earthquakes, with approximately half of its land area classified as earthquake zones of intensity 7 or higher, covering most of the western energy bases and the central and eastern power load centers, existing technologies have been developed. For example, researchers like Enblom from ABB implemented spring damping devices at both the bottom and top of the suspended converter valves in the North Island converter station project in New Zealand to address the potential large displacements of suspended converter valves in high-intensity seismic zones. Scholars such as Zhang Lihong from the China Institute of Water Resources and Hydropower Research analyzed the seismic performance of suspended converter valves in the Xinsong ±800kV converter station of the Yunnan-Guangdong UHVDC project. They calculated the peak displacement response of the converter valve tower within the valve hall structure to be 1.45m under a 0.4g earthquake and investigated the effect of installing spring cable devices at the bottom of the equipment to limit the horizontal displacement of the valve tower. Scholars such as Yang Zhenyu from Tongji University conducted finite element simulations of the seismic response of a ±800kV valve hall-valve tower. Their analysis showed that under an El Centro wave earthquake with a peak ground acceleration of 0.4g, the horizontal displacement of the valve tower could reach 1.64m. They proposed a scheme using tensioned insulators and spring-damper connectors to connect the bottom of the valve tower to the ground for displacement control of the converter valve. However, existing technical solutions cannot be readily applied in practical engineering. The main reasons are that arranging suspended spring damping devices at the top of the valve tower increases the height of the valve hall, altering its structural design; ground-connected shock absorbers occupy too much space in the valve hall, easily interfering with and affecting nearby power facilities; furthermore, they also hinder the inspection of equipment by the inspection trolley within the valve hall. Therefore, by arranging angular displacement dampers at the corner position of the top corner of the suspension mechanism 2, the present invention does not change the original equipment structure of the suspension converter valve, does not affect the normal operation of the equipment and the inspection work of the trolley under the converter valve, does not damage the process layout in the valve hall, and does not interfere with other adjacent power facilities, thus having strong engineering feasibility.

[0063] In this embodiment, as Figure 3 As shown, each group of angular displacement dampers 3 contains two angular displacement dampers 3, and the two angular displacement dampers 3 are arranged horizontally orthogonally.

[0064] Specifically, the angle between the edge of the angular displacement shock absorber 3 and the edge of the suspension mechanism 2 in the horizontal projection direction is a right angle.

[0065] In this embodiment, the number of sets of angular displacement shock absorbers 3 is the same as the number of top corner points of the suspension mechanism 2.

[0066] Specifically, the suspension mechanism 2 consists of multiple suspension insulators on the upper part of the suspended converter valve. Vibration damping devices are installed at the hinge points where the suspension insulators connect to the steel structure 4 at the top of the valve hall. Preferably, four sets of angular displacement dampers 3 are symmetrically installed in two horizontal orthogonal directions. Each set of angular displacement dampers 3 includes two angular displacement dampers 3, for a total of eight angular displacement dampers 3. The suspended converter valve is generally suspended from the top of the valve hall by six insulators. A cooling system is usually installed in the space enclosed by the six insulators. To avoid interfering with the cooling system, vibration dampers should be arranged on the outside of the area enclosed by the suspension insulators.

[0067] In this embodiment, as Figure 4 and Figure 5 As shown, the angular displacement shock absorber 3 includes a central arc-shaped connecting plate 3-1, two arc-shaped connecting side plates 3-2 respectively disposed on both sides of the central arc-shaped connecting plate 3-1, and a viscoelastic energy dissipation layer 3-3 disposed between the central arc-shaped connecting plate 3-1 and the central arc-shaped connecting plate 3-1.

[0068] In this embodiment, the central arc-shaped connecting plate 3-1 and the arc-shaped connecting side plate 3-2 are circular arc plates with the same radius and the same curvature.

[0069] In this embodiment, the central arc-shaped connecting plate 3-1 and the arc-shaped connecting side plate 3-2 are arranged in parallel and have circumferential misalignment.

[0070] It should be noted that the aforementioned angular displacement damper 3 is a viscoelastic damper. Viscoelastic material is bonded between the three connecting plates of the damper, namely the central arc-shaped connecting plate 3-1 and the two arc-shaped connecting side plates 3-2, forming a viscoelastic energy-dissipating layer 3-3. The central arc-shaped connecting plate 3-1 and the two arc-shaped connecting side plates 3-2 can be made of steel plate or epoxy fiberglass material, forming a 1 / 4 circular ring. Connecting holes are provided on the staggered protruding sections of the central arc-shaped connecting plate 3-1 and the staggered protruding sections of the arc-shaped connecting side plates 3-2, constituting the upper and lower connecting ends of the angular displacement damper 3. The upper end of the angular displacement damper 3 is connected to the top steel structure of the valve hall through the connecting holes on the central arc-shaped connecting plate 3-1 or the arc-shaped connecting side plates 3-2. The lower end of the angular displacement damper 3 is clamped to the metal flange above the suspension insulator in the suspension mechanism 2 through the connecting holes on the arc-shaped connecting side plates 3-2 or the central arc-shaped connecting plate 3-1.

[0071] The suspension insulator of the converter valve is hinged to the steel structure of the valve hall. During an earthquake, the converter valve tower swings, causing the suspension insulator in the upper suspension mechanism 2 to swing at an angle. The upper end of the suspension insulator's hardware flange and the top of the valve hall experience angular displacement, which activates the angular displacement dampers 3 connected to both. Four sets of angular displacement dampers 3 are installed at each of the four corners of the suspension points of the converter valve in two orthogonal directions, for a total of eight angular displacement dampers 3. This ensures that the damping device can effectively absorb and dissipate energy under earthquake forces in all directions.

[0072] Because the upper and lower ends of the 1 / 4-circular angular displacement damper 3 are connected to the steel structure 4 at the top of the valve hall and the upper flange of the upper suspension insulator of the converter valve, respectively, during an earthquake, the central arc-shaped connecting plate 3-1 and the two outer arc-shaped connecting edge plates 3-2 of the angular displacement damper 3 undergo circumferential dislocation due to the swaying motion of the converter valve suspension insulator. This causes shear deformation of the viscoelastic energy dissipation layer 3-3 formed by the two viscoelastic materials between the central arc-shaped connecting plate 3-1 and the outer arc-shaped connecting edge plates 3-2. Under earthquake action, during the back-and-forth swaying of the suspended converter valve, the central arc-shaped connecting plate 3-1 and the outer arc-shaped connecting edge plates 3-2 undergo reciprocating circumferential dislocation motion, and the two viscoelastic materials undergo cyclic shear deformation, thereby dissipating earthquake energy.

[0073] In another possible implementation, the angular displacement damper 3 can also be an angular displacement viscous damper or an angular displacement metal damper, etc.

[0074] In this embodiment, the centers of the central arc-shaped connecting plate 3-1 and the arc-shaped connecting side plate 3-2 overlap, and the overlapping center overlaps with the hinge point of the suspension mechanism 2 on the top steel structure 4.

[0075] Example 2:

[0076] Based on the same inventive concept, this invention also provides a design method for a suspended converter valve corner damping device, such as... Figure 6 As shown, it includes:

[0077] S1. Based on the self-weight and natural frequency of the converter valve 1, determine the initial yield force and initial damping coefficient of the angular displacement damper 3 in the damping device.

[0078] S2. Based on the initial yield force and the initial damping coefficient, determine the initial model and the corresponding mechanical parameters of the angular displacement shock absorber 3;

[0079] S3. Input the mechanical parameters corresponding to the initial model into the pre-constructed finite element simulation model of the converter valve vibration reduction structure, perform simulation calculations under the ground motion time history, and obtain the vibration reduction results of the initial model.

[0080] S4. Determine whether the vibration reduction result of the initial model meets the set vibration reduction requirements. If it does, output the initial model and complete the vibration reduction device design. If it does not meet the requirements, reselect the angular displacement type vibration damper 3 according to the vibration reduction result of the initial model until the selected angular displacement type vibration damper 3 meets the set vibration reduction requirements and complete the vibration reduction device design.

[0081] The finite element simulation model of the damping structure of the converter valve is constructed based on the installation and connection structure of the converter valve and the damping device; the damping device adopts the damping device described above.

[0082] In this embodiment, S1 specifically includes determining the initial yield force of the angular displacement damper 3 based on the self-weight of the converter valve 1, and determining the initial damping coefficient of the angular displacement damper 3 based on the self-weight and natural frequency of the converter valve 1.

[0083] In this embodiment, the sum of the initial yield forces of all the angular displacement dampers 3 in the damping device is 1 / 2 to 4 / 5 of the self-weight of the converter valve.

[0084] In this embodiment, preferably, the sum of the initial yield forces of all the angular displacement dampers 3 in the damping device is 2 / 3 of the weight of the converter valve.

[0085] In this embodiment, the initial damping coefficient is determined according to the following formula:

[0086] c=mω n ξ / 2;

[0087] In the formula, c is the initial damping coefficient, m is the weight of the converter valve; ω n ξ is the natural frequency of the converter valve; ξ is the damping ratio of the converter valve's damping structure, which ranges from 0.03 to 0.08.

[0088] In this embodiment, preferably, the damping ratio of the converter valve damping structure is 0.05 when determining the initial damping coefficient.

[0089] In this embodiment, determining the initial model and corresponding mechanical parameters of the angular displacement damper 3 based on the initial yield force and the initial damping coefficient includes:

[0090] The initial mechanical parameters of the angular displacement damper 3 are determined according to the approximate calculation formula of the initial damping coefficient.

[0091] Based on the initial yield force and the initial mechanical parameters, determine the initial model of the angular displacement shock absorber and the corresponding mechanical parameters of the initial model;

[0092] The approximate calculation formula is expressed as follows:

[0093]

[0094] In the formula, c is the initial damping coefficient, G" is the shear loss modulus, A is the shear area of ​​the viscoelastic energy dissipation layer 3-3, Tg is the site characteristic period, and h is the thickness of the viscoelastic energy dissipation layer 3-3.

[0095] Specifically, among many models, the angular displacement shock absorber 3 that is closest to the initial mechanical parameters can be selected as the initial model. Therefore, the mechanical parameters corresponding to the initial model may not be the same as the calculated initial mechanical parameters.

[0096] In this embodiment, the pre-construction process of the finite element simulation model of the converter valve damping structure in S3 includes:

[0097] Establish finite element models for the supporting steel structure (i.e., the steel structure at the top of the valve hall), the suspended converter valve, and its vibration damping device. The supporting steel structure and the suspended converter valve are modeled based on the actual geometric and physical parameters of the structure or equipment, while the vibration damping device can be simulated using Bouc-Wen mechanical model elements.

[0098] In the Bouc-Wen mechanical model, the restoring force F of the damping device can be expressed as:

[0099] F = rku + (1-r)f·z;

[0100] In the formula, k is the initial stiffness of the damping device, u is the displacement of the damping device, f is the yield force, r is the stiffness ratio after yielding, and z is the internal parameter of the model, satisfying:

[0101]

[0102] In the formula, e is the yield index.

[0103] Cyclic loading tests were conducted on the vibration dampers using viscoelastic materials with different dimensional parameters, namely viscoelastic energy dissipation cylinders 3-3, to obtain the hysteresis curves of different models of vibration dampers. Thus, k, f, r and e in the above formula were obtained by fitting. At the same time, the properties of viscoelastic materials, such as shear storage modulus, shear loss modulus, and equivalent stiffness, can be tested.

[0104] when Figure 3 When a certain type of viscoelastic material has a thickness of 15mm, a length of 150mm, and an outer diameter of 90mm, the hysteresis curve of the corresponding type of shock absorber is obtained as follows: Figure 7 As shown, based on the hysteresis curve, the values ​​of k, f, r, and e for this type of shock absorber can be obtained by fitting.

[0105] Based on the initial value of the damper's yield force f, the calibration results of the damper parameters, and the initial value and approximate calculation formula of the damper's damping coefficient c, the damper model can be preliminarily determined. The Bouc-Wen mechanical model parameters obtained by fitting this damper model are then substituted into the finite element model to complete the modeling. The seismic motion time history is input for simulation calculation to obtain the displacement and stress results of key components under seismic loading on the suspended converter valve. The damping design is then examined to determine if it meets the engineering requirements. If it does, the damping design is complete, and the damper parameters are determined. Otherwise, the damper model is adjusted based on the calculation results, and the Bouc-Wen mechanical model parameters of the damping device in the finite element model are changed accordingly for recalculation. This iterative cycle continues until the damping design is complete.

[0106] Example 3:

[0107] Based on the same inventive concept, this invention also provides a design system for a suspended converter valve corner damping device, such as... Figure 8 As shown, it includes:

[0108] The initial value determination module is used to determine the initial yield force and initial damping coefficient of the angular displacement damper 3 in the damping device based on the self-weight and natural frequency of the converter valve 1.

[0109] The initial parameter determination module is used to determine the initial model and the corresponding mechanical parameters of the angular displacement shock absorber 3 based on the initial yield force and the initial damping coefficient.

[0110] The simulation module is used to input the mechanical parameters corresponding to the initial model into a pre-built finite element simulation model of the converter valve vibration reduction structure, perform simulation calculations under the ground motion time history, and obtain the vibration reduction results of the initial model.

[0111] The selection and judgment module is used to determine whether the vibration reduction result of the initial model meets the set vibration reduction requirements. If it does, the initial model is output to complete the vibration reduction device design. If it does not meet the requirements, the angular displacement vibration damper 3 is re-selected based on the vibration reduction result of the initial model until the selected angular displacement vibration damper 3 meets the set vibration reduction requirements, thus completing the vibration reduction device design.

[0112] The finite element simulation model of the damping structure of the converter valve is constructed based on the installation and connection structure of the converter valve and the damping device; the damping device adopts the damping device described above.

[0113] In this embodiment, the sum of the initial yield forces of all the angular displacement dampers 3 in the damping device is 1 / 2 to 4 / 5 of the self-weight of the converter valve.

[0114] In this embodiment, the initial damping coefficient is determined according to the following formula:

[0115] c=mωn ξ / 2;

[0116] In the formula, c is the initial damping coefficient, m is the weight of the converter valve; ω n ξ is the natural frequency of the converter valve; ξ is the damping ratio of the converter valve's damping structure, which ranges from 0.03 to 0.08.

[0117] In this embodiment, determining the initial model and corresponding mechanical parameters of the angular displacement damper 3 based on the initial yield force and the initial damping coefficient includes:

[0118] The initial mechanical parameters of the angular displacement damper 3 are determined according to the approximate calculation formula of the initial damping coefficient.

[0119] Based on the initial yield force and the initial mechanical parameters, determine the initial model of the angular displacement shock absorber and the corresponding mechanical parameters of the initial model;

[0120] The approximate calculation formula is expressed as follows:

[0121]

[0122] In the formula, c is the initial damping coefficient, G" is the shear loss modulus, A is the shear area of ​​the viscoelastic energy dissipation layer 3-3, Tg is the site characteristic period, and h is the thickness of the viscoelastic energy dissipation layer 3-3.

[0123] Example 4:

[0124] like Figure 9 As shown, the present invention also provides an electronic device, which may be a computer device, a microcontroller device, a smart mobile device, etc. The electronic device in this embodiment may include a processor, a memory, a transceiver component, etc. The memory, processor, and transceiver component are connected via a bus; the memory can be used to store executable programs, and an exemplary executable program may include instructions; the processor is used to execute the instructions stored in the memory. The memory can also be used to store data, which can be accessed and / or modified when instructions are executed.

[0125] The processor may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing and control core of the terminal, and it is suitable for implementing one or more instructions. Specifically, it is suitable for loading and executing one or more instructions in the storage medium to realize the corresponding method flow or corresponding function, so as to realize the steps of the design method of a suspended converter valve corner type vibration damping device in the above embodiment.

[0126] Example 5:

[0127] Based on the same inventive concept, this invention also provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device used to store programs and data. It is understood that the computer-readable storage medium here can include both the built-in storage medium in the computer device and extended storage media supported by the computer device. The computer-readable storage medium provides storage space that stores the terminal's operating system. Furthermore, this storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more computer programs (including program code). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk storage device. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the steps of the design method for a suspended converter valve angle damping device in the above embodiments.

[0128] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0129] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0130] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0131] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit its scope of protection. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present invention, they can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the application, but these changes, modifications or equivalent substitutions are all within the scope of protection of the claims of the present invention.

Claims

1. A suspended converter valve corner type vibration damping device, characterized in that, The shock absorption device includes: at least two sets of angular displacement shock absorbers (3), which are respectively installed at the corner position of the top corner of the suspension mechanism (2) at the top of the converter valve (1); The two ends of the angular displacement shock absorber (3) are respectively connected to the top steel structure (4) of the converter valve hall and the upper flange of the suspension mechanism (2).

2. The suspension-type converter valve corner damping device as described in claim 1, characterized in that, Each group of angular displacement dampers (3) contains two angular displacement dampers (3), and the two angular displacement dampers (3) are arranged horizontally orthogonally.

3. The suspended converter valve corner type vibration damping device as described in claim 1, characterized in that, The number of groups of the angular displacement shock absorbers (3) is the same as the number of top corner points of the suspension mechanism (2).

4. The suspension-type converter valve corner damping device as described in claim 1, characterized in that, The angular displacement shock absorber (3) includes a central arc-shaped connecting plate (3-1), two arc-shaped connecting side plates (3-2) respectively disposed on both sides of the central arc-shaped connecting plate (3-1), and a viscoelastic energy dissipation layer (3-3) disposed between the central arc-shaped connecting plate (3-1) and the central arc-shaped connecting plate (3-1).

5. The suspended converter valve corner type vibration damping device as described in claim 4, characterized in that, The central arc-shaped connecting plate (3-1) and the arc-shaped connecting side plate (3-2) are circular arc plates with the same radius and the same curvature.

6. The suspension-type converter valve corner damping device as described in claim 4, characterized in that, The central arc-shaped connecting plate (3-1) and the arc-shaped connecting side plate (3-2) are arranged in parallel and have circumferential misalignment.

7. A suspension-type converter valve corner damping device as described in claim 4, characterized in that, The centers of the central arc-shaped connecting plate (3-1) and the arc-shaped connecting side plate (3-2) overlap, and the overlapping center overlaps with the hinge point of the suspension mechanism (2) on the top steel structure (4).

8. A design method for a suspended converter valve corner-type vibration damping device, characterized in that, include: Based on the self-weight and natural frequency of the converter valve (1), the initial yield force and initial damping coefficient of the angular displacement damper (3) in the damping device are determined. Based on the initial yield force and the initial damping coefficient, determine the initial model and the mechanical parameters corresponding to the initial model of the angular displacement shock absorber (3); The mechanical parameters corresponding to the initial model are input into the pre-constructed finite element simulation model of the converter valve vibration reduction structure, and simulation calculations are performed under the ground motion time history to obtain the vibration reduction results of the initial model. Determine whether the damping result of the initial model meets the set damping requirements. If it does, output the initial model and complete the damping device design. If it does not meet the requirements, reselect the angular displacement damper (3) according to the damping result of the initial model until the selected angular displacement damper (3) meets the set damping requirements and completes the damping device design. The finite element simulation model of the damping structure of the converter valve is constructed based on the installation and connection structure of the converter valve and the damping device; the damping device adopts the damping device described in any one of claims 1-6.

9. The design method of a suspended converter valve corner type vibration damping device as described in claim 8, characterized in that, The sum of the initial yield forces of all the angular displacement dampers (3) in the damping device is 1 / 2 to 4 / 5 of the self-weight of the converter valve.

10. The design method of a suspended converter valve corner type vibration damping device as described in claim 8, characterized in that, The initial damping coefficient is determined according to the following formula: c=mω n ξ / 2; In the formula, c is the initial damping coefficient, m is the weight of the converter valve; ω n ξ is the natural frequency of the converter valve; ξ is the damping ratio of the converter valve's damping structure, which ranges from 0.03 to 0.

08.

11. The design method of a suspended converter valve corner damping device as described in claim 8, characterized in that, The determination of the initial model and corresponding mechanical parameters of the angular displacement damper (3) based on the initial yield force and the initial damping coefficient includes: The initial mechanical parameters of the angular displacement damper (3) are determined according to the approximate calculation formula of the initial damping coefficient. Based on the initial yield force and the initial mechanical parameters, determine the initial model of the angular displacement shock absorber and the corresponding mechanical parameters of the initial model; The approximate calculation formula is expressed as follows: In the formula, c is the initial damping coefficient, G" is the shear loss modulus, A is the shear area of ​​the viscoelastic energy dissipation layer (3-3), Tg is the site characteristic period, and h is the thickness of the viscoelastic energy dissipation layer (3-3).

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