Design method for vibration isolation system for controlling vibration influence of reactor and vibration isolation system

Abstract

The present invention provides a vibration isolation system design method and a vibration isolation system for controlling the vibration influence of a reactor, including: designing a reactor support structure, a vibration isolator arrangement mode, and a vibration isolator support structure; designing the parameters of each vibration isolator according to a preset vibration isolation efficiency and a preset natural vibration frequency; performing vibration response calculation under the action of the vibration load of the reactor; when the vibration response of the vibration isolator support structure is greater than or equal to a first preset threshold, reducing the preset natural vibration frequency, and executing step S150; when the vibration response of the vibration isolator support structure is less than the first preset threshold, judging whether the vibration response of the reactor support structure is less than a second preset threshold, and when the vibration response of the reactor support structure is greater than or equal to the second preset threshold, increasing the mass of the reactor support structure, and executing step S110; when the vibration response of the reactor support structure is less than the second preset threshold, the design of the vibration isolation system is completed, solving the problem of poor effect of the vibration isolation system in controlling the vibration influence of the reactor.

Description

Technical Field

[0001] The present invention relates to the technical field of substations, and in particular, to a vibration isolation system design method and a vibration isolation system for controlling the vibration influence of a reactor. Background Art

[0002] In recent years, the engineering applications of reactors arranged on floor structures have gradually increased, and the vibration responses of floor structures caused by the operation of reactors are significant. Tests show that the peak values of vibration accelerations of some reactor room structures reach 2.6 m / s 2 . Severe vibration is a hidden danger to structural safety and equipment operation, and attention should be paid to the equipment vibration control problem in the design stage. In engineering design, two types of methods are often used to reduce vibration responses. One is to set a large-mass rigid foundation, and the other is to adopt equipment vibration damping methods. The current design methods have the following defects:

[0003] The rigid foundation affects the process layout and has a large investment. By increasing the stiffness of the support structure and increasing the participation mass of the support structure, the goal of reducing the vibration response is achieved. However, the vibration control effect of such measures is limited, and the size of the support structure that needs to be set increases significantly, which affects the process layout, and the civil engineering investment increases significantly;

[0004] Conventional vibration isolation is difficult to control the vibration displacement of equipment. Currently, there is a method of using vibration isolation pads under the equipment for vibration damping, such as installing rubber vibration isolators, damping vibration isolation supports, etc. at the positioning pins of the reactor oil tank, and verifying its vibration damping effect through theoretical derivation and simulation calculation. However, only using the vibration isolation pad method for vibration damping will instead increase the vibration response of the equipment above the vibration isolation pad, and the vibration problem of the equipment itself is aggravated when solving the structural vibration problem;

[0005] The engineering durability is low and the maintenance is difficult. The vibration isolation pad bears dozens of tons and is in a high-temperature and oil-immersed environment for a long time. Under such service conditions, due to the lack of mechanical properties and aging resistance of the vibration isolation pad, it is difficult to maintain good vibration isolation performance for a long time. When the vibration isolation performance decreases and needs to be repaired, construction needs to be carried out at the equipment, which affects the operation function of the power station. Summary of the Invention

[0006] The main purpose of the present invention is to provide a vibration isolation system design method and a vibration isolation system for controlling the vibration influence of a reactor, so as to solve the problem that the existing vibration isolation system has a poor effect on controlling the vibration influence of the reactor.

[0007] To achieve the above object, according to one aspect of the present invention, a design method for a vibration isolation system for controlling the vibration influence of a reactor is provided. The vibration isolation system includes a reactor, a reactor support structure, a plurality of vibration isolators, and a vibration isolator support structure. The reactor is arranged above and connected to the reactor support structure. The vibration isolator support structure is arranged below the reactor support structure. The plurality of vibration isolators are all arranged between the reactor support structure and the vibration isolator support structure. The design method for the vibration isolation system for controlling the vibration influence of the reactor includes: designing the reactor support structure; designing the layout of the vibration isolators according to the design result of the reactor support structure; designing the vibration isolator support structure; designing the parameters of each vibration isolator according to the preset vibration isolation efficiency and preset natural vibration frequency of the vibration isolation system; wherein, the parameters of the vibration isolator include the stiffness and damping of the vibration isolator; using finite element analysis to calculate the vibration response under the action of the reactor vibration load to obtain the vibration response of the vibration isolator support structure and the vibration response of the reactor support structure; judging whether the vibration response of the vibration isolator support structure is less than a first preset threshold. When the vibration response of the vibration isolator support structure is greater than or equal to the first preset threshold, reduce the preset natural vibration frequency of the vibration isolation system, and re-execute the step of designing the parameters of each vibration isolator according to the preset vibration isolation efficiency and preset natural vibration frequency of the vibration isolation system; when the vibration response of the vibration isolator support structure is less than the first preset threshold, judge whether the vibration response of the reactor support structure is less than a second preset threshold. When the vibration response of the reactor support structure is greater than or equal to the second preset threshold, increase the mass of the reactor support structure, and re-execute the step of designing the reactor support structure; when the vibration response of the reactor support structure is less than the second preset threshold, complete the design of the vibration isolation system.

[0008] Further, after designing the parameters of each vibration isolator according to the preset vibration isolation efficiency and preset natural vibration frequency of the vibration isolation system, the design method for the vibration isolation system for controlling the vibration influence of the reactor further includes: calculating the deformation of each vibration isolator in the vibration isolation system. When the deformations of the plurality of vibration isolators are consistent, then execute the step of using finite element analysis to calculate the vibration response under the action of the reactor vibration load; when the deformations of the plurality of vibration isolators are inconsistent, re-design the parameters of each vibration isolator.

[0009] Further, the preset natural vibration frequency is less than or equal to 5 Hz; the preset vibration isolation efficiency is greater than or equal to 80%.

[0010] Further, the method for designing the reactor support structure includes: designing the structural form, structural stiffness, and structural mass of the reactor support structure according to the size, mass, load distribution of the reactor, and the process requirements of the reactor chamber for accommodating the reactor; wherein, the reactor support structure is a floor slab, and the structural form of the reactor support structure includes one of a primary-secondary beam and a grid beam.

[0011] Further, the vibration isolation system is used to be arranged in the accommodation chamber; the method for designing the reactor support structure includes: designing the reactor support structure to be spaced apart from the inner wall of the accommodation chamber.

[0012] Further, the method for designing the arrangement mode of the vibration isolators according to the design result of the reactor support structure includes: designing the arrangement position, the number and the size of the vibration isolators according to the design result of the reactor support structure; wherein, the vibration isolators are arranged below the beam ends or below the beam-beam joints of the reactor support structure.

[0013] Further, after designing the arrangement mode of the vibration isolators according to the design result of the reactor support structure, the vibration isolation system design method for controlling the vibration influence of the reactor further includes: calculating the loads at the arrangement positions of each vibration isolator; the method for designing the vibration isolator support structure includes: designing the vibration isolator support structure according to the loads calculated at the arrangement positions of each vibration isolator.

[0014] Further, the vibration isolator support structure includes a support plate for supporting the vibration isolator; the vibration isolator support structure further includes support beams and / or support columns for supporting the support plate; the method for designing the vibration isolator support structure includes: designing the beam and column structural forms, the structural arrangement and the structural stiffness of the vibration isolator support structure; wherein, the structural arrangement of the vibration isolator support structure is the arrangement condition of the support beams and the support columns.

[0015] According to another aspect of the present invention, there is provided a vibration isolation system, including: a reactor support structure; a reactor arranged above and connected with the reactor support structure; a vibration isolator support structure arranged below the reactor support structure; and a plurality of vibration isolators arranged between the reactor support structure and the vibration isolator support structure.

[0016] Further, the vibration isolation system is used to be arranged in the accommodation chamber, and the reactor support structure is spaced apart from the inner wall of the accommodation chamber; the vibration isolator support structure is connected with the inner wall of the accommodation chamber.

[0017] The design method of the vibration isolation system for controlling the vibration influence of the reactor of the present invention is applicable to the vibration control problem when a high-voltage shunt reactor is arranged on a floor structure. First, steps S110, S120, and S140 are executed to preliminarily complete the design of the reactor support structure, the arrangement of the vibration isolators, and the design of the vibration isolator support structure. Then, the parameters of each vibration isolator are designed according to the preset vibration isolation efficiency and preset natural vibration frequency of the vibration isolation system, and the vibration response is calculated by using finite element analysis under the action of the reactor vibration load to optimize the parameters of the vibration isolators and the mass of the reactor support structure. Finally, a vibration isolation system that meets the vibration isolation performance target is obtained, solving the problem that the effect of the vibration isolation system in controlling the vibration influence of the reactor in the prior art is not good. In addition, the vibration isolation system isolates vibration by setting vibration isolators under the reactor support structure. The reactor support structure participates in the vibration of the reactor, significantly increasing the vibration participation mass of the equipment and effectively reducing the vibration response of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 Part of the flowchart of an embodiment of the design method of the vibration isolation system for controlling the vibration influence of the reactor according to the present invention is shown;

[0020] Figure 2 The flowchart of an embodiment of the design method of the vibration isolation system for controlling the vibration influence of the reactor according to the present invention is shown;

[0021] Figure 3 The schematic diagram of an embodiment of the vibration isolation system according to the present invention is shown.

[0022] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0023] 10, reactor; 20, reactor support structure; 30, vibration isolator; 40, vibration isolator support structure; 41, support plate; 50, reactor chamber; 60, accommodation chamber; 70, installation chamber. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] It should be pointed out that the following detailed description is exemplary and is intended to provide further illustration of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0026] It should be noted that the terms used herein are merely for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] The present invention provides a design method for a vibration isolation system to control the vibration influence of a reactor. The vibration isolation system includes a reactor 10, a reactor support structure 20, a plurality of vibration isolators 30, and a vibration isolator support structure 40. The reactor 10 is disposed above and connected to the reactor support structure 20. The vibration isolator support structure 40 is disposed below the reactor support structure 20. The plurality of vibration isolators 30 are all disposed between the reactor support structure 20 and the vibration isolator support structure 40. For the design method of the vibration isolation system to control the vibration influence of the reactor, please refer to Figure 1 , including:

[0028] Step S110, designing the reactor support structure 20;

[0029] Step S120, designing the layout mode of the vibration isolators 30 according to the design result of the reactor support structure 20;

[0030] Step S140, designing the vibration isolator support structure 40;

[0031] Step S150, designing the parameters of each vibration isolator 30 according to the preset vibration isolation efficiency and preset natural vibration frequency of the vibration isolation system; wherein, the parameters of the vibration isolator 30 include the stiffness and damping of the vibration isolator 30;

[0032] Step S180, performing vibration response calculation under the action of the reactor vibration load by using finite element analysis to obtain the vibration response of the vibration isolator support structure 40 and the vibration response of the reactor support structure 20;

[0033] Step S190, judging whether the vibration response of the vibration isolator support structure 40 is less than a first preset threshold. When the vibration response of the vibration isolator support structure 40 is greater than or equal to the first preset threshold, reducing the preset natural vibration frequency of the vibration isolation system and re-executing step S150; when the vibration response of the vibration isolator support structure 40 is less than the first preset threshold, executing step S200, judging whether the vibration response of the reactor support structure 20 is less than a second preset threshold. When the vibration response of the reactor support structure 20 is greater than or equal to the second preset threshold, increasing the mass of the reactor support structure 20 and re-executing step S110; when the vibration response of the reactor support structure 20 is less than the second preset threshold, completing the design of the vibration isolation system.

[0034] The vibration isolation system design method for controlling the vibration influence of the reactor of the present invention is applicable to the vibration control problem when a high-voltage shunt reactor is arranged on a floor structure. First, steps S110, S120, and S140 are executed to preliminarily complete the design of the reactor support structure 20, the arrangement of the vibration isolators 30, and the design of the vibration isolator support structure 40. Then, the parameters of each vibration isolator 30 are designed according to the preset vibration isolation efficiency and the preset natural vibration frequency of the vibration isolation system, and the vibration response is calculated by using finite element analysis under the action of the reactor vibration load to optimize the parameters of the vibration isolators 30 and the mass of the reactor support structure 20. Finally, a vibration isolation system that meets the vibration isolation performance target is obtained, solving the problem that the vibration isolation system in the prior art has a poor effect on controlling the vibration influence of the reactor. In addition, the vibration isolation system isolates vibration by arranging the vibration isolators 30 under the reactor support structure 20. The reactor support structure 20 participates in the vibration of the reactor 10, significantly increasing the vibration participation mass of the equipment and effectively reducing the vibration response of the reactor 10.

[0035] In specific implementation, in step S150, according to the vibration isolation performance requirements of the vibration isolation system, the preset vibration isolation efficiency of the vibration isolation system is preliminarily determined, and the preset natural vibration frequency (i.e., the vertical natural vibration frequency target value) of the vibration isolation system is preliminarily determined.

[0036] Specifically, the method for determining whether the vibration response of the vibration isolator support structure 40 is less than the first preset threshold includes: determining whether the velocity of the vibration isolator support structure 40 is less than the first preset threshold. The vibration response of the vibration isolator support structure 40 is the velocity of the vibration isolator support structure 40. It should be noted that according to the actual situation, other data of the vibration response of the vibration isolator support structure 40 can also be selected, such as the acceleration, displacement, and frequency of the vibration isolator support structure 40.

[0037] Specifically, the method for determining whether the vibration response of the reactor support structure 20 is less than the second preset threshold includes: determining whether the displacement of the reactor support structure 20 is less than the second preset threshold. The vibration response of the reactor support structure 20 is the displacement of the reactor support structure 20. It should be noted that according to the actual situation, other data of the vibration response of the reactor support structure 20 can also be selected, such as the acceleration, velocity, and frequency of the reactor support structure 20.

[0038] In this embodiment, after designing the parameters of each vibration isolator 30 according to the preset vibration isolation efficiency and the preset natural vibration frequency of the vibration isolation system, the vibration isolation system design method for controlling the vibration influence of the reactor further includes:

[0039] Step S160: Calculate the deformation of each vibration isolator 30 in the vibration isolation system. Step S170: Determine whether the deformations of multiple vibration isolators 30 are consistent. When the deformations of multiple vibration isolators 30 are consistent, execute Step S180; when the deformations of multiple vibration isolators 30 are inconsistent, re-design the parameters of each vibration isolator 30. Among them, calculating the deformation of each vibration isolator 30 is to calculate the compression amount of each vibration isolator 30. Specifically in implementation, through the calculation of the numerical model of the vibration isolation system, the goal of consistent compression amount deformation of each vibration isolator 30 is achieved, and the parameter design of the vibration isolator is initially completed.

[0040] Specifically, calculating the deformation of each vibration isolator 30 in the vibration isolation system means calculating the deformation of each vibration isolator 30 under the action of the reactor 10, the reactor support structure 20, and the vibration isolator support structure 40.

[0041] Specifically in implementation, establish an analysis model of the vibration isolation system, calculate the load transfer situation of the reactor support structure according to the load distribution of the reactor and the structural stiffness distribution, initially select the stiffness parameters and / or damping parameters of each vibration isolator, and slightly adjust the stiffness and / or damping of each vibration isolator with the goal of uniform vertical deformation of the reactor support structure. When the deformations of multiple vibration isolators 30 are inconsistent, re-design the parameters of each vibration isolator 30, that is, re-execute Step S150, and then sequentially execute Steps S160 and S170, and cycle in this way until the deformations of all vibration isolators 30 are consistent.

[0042] Specifically, preset the natural vibration frequency to be less than or equal to 5 Hz; preset the vibration isolation efficiency to be greater than or equal to 80%. Such settings can ensure that the vibration isolation system has good vibration isolation performance.

[0043] Specifically, the method for designing the reactor support structure 20 in Step S110 includes: designing the structural form, structural stiffness, and structural mass of the reactor support structure 20 according to the size, mass, load distribution of the reactor 10, and the process requirements of the reactor chamber 50 for accommodating the reactor 10; among them, the reactor support structure 20 is a floor slab, and the structural form of the reactor support structure 20 (i.e., the floor slab) includes one of primary and secondary beams and grid beams. Specifically in implementation, design the specific structure of the floor slab according to the size, mass, load distribution of the reactor 10, the process requirements of the reactor chamber 50 for accommodating the reactor 10, and the load-bearing capacity requirements of the reactor support structure 20; since this step is the preliminary design of the reactor support structure 20, it is subject to meeting the normal use and load-bearing capacity requirements of the reactor support structure 20. In addition, when designing the reactor support structure 20, the basic connection requirements of the reactor also need to be considered; when designing the reactor support structure 20, the structural layout of the floor slab also needs to be designed, that is, the design parameters of the primary and secondary beams or grid beams.

[0044] It should be noted that the process requirements of the reactor room 50 include fire protection process requirements and airtight process requirements. Of course, the process requirements of the reactor room 50 may also include other process requirements depending on the specific situation, as long as the normal use of the reactor room 50 is ensured; the load distribution of the reactor 10 in step 110 refers to the static load of the reactor 10.

[0045] In this embodiment, the vibration isolation system is used to be arranged in the accommodation room 60; the method for designing the reactor support structure 20 further includes: designing the reactor support structure 20 to be spaced apart from the inner wall of the accommodation room 60.

[0046] Specifically, the method for designing the arrangement mode of the vibration isolator 30 according to the design result of the reactor support structure 20 in step S120 includes: designing the arrangement position of the vibration isolator 30, the number of the vibration isolators 30, and the size of the vibration isolators 30 according to the design result of the reactor support structure 20; wherein, the vibration isolators 30 are arranged below the beam ends of the reactor support structure 20 or below the joints of beams with beams.

[0047] It should be noted that since the reactor support structure 20 is a floor slab, specifically, it can be a primary-secondary beam floor slab and a grid beam floor slab, so the reactor support structure 20 has multiple beams. The vibration isolators 30 are arranged below the ends of the beams of the reactor support structure 20, or below the intersection of two beams of the reactor support structure 20, that is, below the joints of beams with beams. Such a setting can enable the vibration isolators 30 to support the beam ends or the joints of beams with beams of the reactor support structure 20.

[0048] Specifically, after designing the arrangement mode of the vibration isolator 30 according to the design result of the reactor support structure 20, the method for designing the vibration isolation system to control the vibration influence of the reactor further includes: step S130, calculating the loads at the arrangement positions of each vibration isolator 30; the method for designing the vibration isolator support structure 40 in step S140 includes: designing the vibration isolator support structure 40 according to the loads calculated at the arrangement positions of each vibration isolator 30. During specific implementation, according to the arrangement characteristics of the vibration isolators 30 and the load distribution, and in accordance with the load-bearing capacity requirements of the vibration isolator support structure 40 and the process requirements of the reactor room 50 below, the vibration isolator support structure 40 is designed.

[0049] Specifically, there is an installation room 70 below the reactor room 50, and the vibration isolator support structure 40 is arranged in the installation room 70; the above-mentioned process requirements below the reactor room 50 are the process requirements of the installation room 70. An oil pool is also arranged in the installation room 70.

[0050] Specifically, the vibration isolator support structure 40 includes a support plate 41 for supporting the vibration isolator 30; the vibration isolator support structure 40 further includes support beams and / or support columns for supporting the support plate 41; the method for designing the vibration isolator support structure 40 includes: designing the beam and column structural forms, structural arrangements, and structural stiffnesses of the vibration isolator support structure 40; wherein, the structural arrangement of the vibration isolator support structure 40 refers to the arrangement of the support beams and support columns; the beam and column structural forms of the vibration isolator support structure 40 may be a form including only support beams, a form including only support columns, or a form including both support beams and support columns. During specific implementation, according to the layout characteristics of the vibration isolator 30 and the load distribution, and in accordance with the load-bearing capacity requirements of the vibration isolator support structure 40 and the process requirements below the reactor chamber 50, the structural parameters of the support beams and support columns of the vibration isolator support structure 40 are designed.

[0051] Optionally, the support plate 41 is a floor slab; the structural form of the support plate 41 (i.e., the floor slab) includes one of primary and secondary beams and grid beams.

[0052] During specific implementation, under the action of the dynamic load (i.e., vibration load) of the reactor, analyze the vibration response of the vibration isolation system, with a focus on the vibration response of the reactor and the vibration response of the structures around the reactor. As Figure 2 shown, determine whether the vibration response of the equipment meets the requirements. When the vibration response of the reactor support structure 20 is greater than or equal to the second preset threshold, return to step S110 to increase the weight of the reactor support structure 20, adjust the stiffness distribution, and then re-execute steps S120, S130, S140, S150, S160, S170 after step 110 is adjusted. Adjust the parameters of the vibration isolator and the parameters of the vibration isolator support structure, and finally re-calculate the vibration response again, and repeat this process until the vibration response of the reactor support structure 20 is less than the second preset threshold. As Figure 2 shown, determine whether the vibration response of the structure meets the requirements. When the vibration of the surrounding structure exceeds the standard, that is, when the vibration response of the vibration isolator support structure 40 is greater than or equal to the first preset threshold, it is necessary to return to step S150, adjust the vibration isolation performance target, reduce the preset natural vibration frequency of the vibration isolation system, reduce the stiffness of the vibration isolator, and then re-execute steps S160, S170, S180, S190, and repeat this process until the vibration response of the vibration isolator support structure 40 is less than the first preset threshold. Thus, the goal of reducing the vibration response of the surrounding structure and controlling the vibration response of the reactor is achieved.

[0053] The present invention also provides a vibration isolation system, as Figure 3As shown in the figure, the vibration isolation system is designed by using the vibration isolation system design method for controlling the vibration influence of the reactor in the above-mentioned embodiment. The vibration isolation system includes: a reactor support structure 20; a reactor 10, which is arranged above the reactor support structure 20 and connected to the reactor support structure 20; a vibration isolator support structure 40, which is arranged below the reactor support structure 20; and a plurality of vibration isolators 30, which are arranged between the reactor support structure 20 and the vibration isolator support structure 40.

[0054] During specific implementation, the vibration isolation system effectively reduces the influence of the reactor vibration on the surrounding structures. When the high-voltage shunt reactor is directly arranged on the floor structure, the vibration generated during the operation of the reactor causes a strong structural vibration response, affecting the building use and even posing a potential hazard to the structural safety. When the vertical natural vibration frequency of the vibration isolation system is controlled within 5 Hz by setting vibration isolators, the vibration isolation efficiency is more than 80%. In addition, the vibration isolation system of the present application has good safety, high durability and is easy to maintain. By using vibration isolators with a pre-compression function, the height of the vibration isolator is equivalent to its stiffness in the working state, which is safe and convenient for the subsequent construction of the equipment support structure. Since the vibration isolators are located below the reactor support structure, they are less affected by the temperature during equipment operation. Compared with directly arranging the vibration isolators below the reactor, the durability of the vibration isolators is significantly improved. In terms of maintenance, when repairing or even replacing the vibration isolators, it is only necessary to carry out the operation below the reactor support structure, which does not affect the normal operation of the upper equipment, and the repair and replacement can be realized under the condition of uninterrupted operation.

[0055] Specifically, the plurality of vibration isolators 30 are arranged at intervals. One end of each vibration isolator 30 is connected to the reactor support structure 20, and the other end of each vibration isolator 30 is connected to the vibration isolator support structure 40.

[0056] In this embodiment, the vibration isolation system is used to be arranged in a containment 60. The reactor support structure 20 is spaced apart from the inner wall of the containment 60; the vibration isolator support structure 40 is connected to the inner wall of the containment 60.

[0057] During specific implementation, the reactor support structure 20 is spaced apart from the inner wall of the containment 60, so that the reactor support structure participates in the vibration and reduces the vibration response of the equipment. When a vibration isolation device is used below a power equipment, due to the reduction of the support stiffness, the vibration response during the operation of the equipment will be amplified to a certain extent, and it is often difficult to meet the requirements of the equipment and the attached pipelines for the vibration displacement. By using vibration isolators to isolate vibration in the lower part of the reactor support structure, the reactor support structure participates in the vibration of the reactor 10, significantly increasing the vibration participation mass of the equipment and effectively reducing the vibration response of the vibration isolation equipment.

[0058] In this embodiment, the reactor support structure 20 divides the accommodation chamber 60 into a reactor chamber 50 and an installation chamber 70, and the reactor chamber 50 is located above the installation chamber 70; the reactor 10 is located in the reactor chamber 50, and a plurality of vibration isolators 30 and the vibration isolator support structure 40 are located in the installation chamber 70.

[0059] In this embodiment, the vibration isolator support structure 40 includes a support plate 41 for supporting the vibration isolator 30, and the support plate 41 is connected to the inner wall of the accommodation chamber 60; the vibration isolator support structure 40 further includes a support beam and / or a support column for supporting the support plate 41.

[0060] Specifically, the reactor support structure 20 is a floor slab; the support plate 41 is a floor slab.

[0061] The vibration isolation system design method for controlling the vibration influence of the reactor in this application mainly aims at the problems that when a 500 kV high-voltage shunt reactor is arranged on the floor slab structure, the vibration of the reactor affects the normal use of the structure, endangers the operation of the equipment and the safety of pipelines. A vibration isolation structure design method for the reactor chamber with high vibration isolation efficiency, small equipment deformation, high safety performance and easy implementation is proposed, which effectively solves the key technical problems such as the ordinary floor slab structure cannot control the vibration response and directly using vibration isolators cannot solve the problem of excessive vibration of the equipment itself, and forms a design method for solving the strong vibration problem of the reactor chamber, which can be used for the structure design of the reactor chamber in the new substation project or the structural renovation and reinforcement when the vibration of the reactor chamber in the existing indoor substation is severe.

[0062] The vibration isolation system design method for controlling the vibration influence of the reactor in this application mainly includes the reactor support structure design, the vibration isolator design method and layout method, and the vibration isolator support structure design. By designing the vibration isolator support structure, the load requirements of the reactor are met. On the basis of ensuring the deformation consistency of the vibration isolator support structure, combined with the bearing capacity requirements of the vibration isolator fulcrum, different performance vibration isolator parameters are designed and arranged. The vibration isolator support structure is designed based on the load condition of the vibration isolator. The proposed vibration isolation structure design method can achieve the effects of small deformation of the reactor equipment and high vibration isolation efficiency. This application can solve the vibration control problem when a 500 kV high-voltage shunt reactor is arranged on the floor slab structure.

[0063] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0064] The design method of the vibration isolation system for controlling the vibration influence of the reactor of the present invention is applicable to the vibration control problem when a high-voltage shunt reactor is arranged on a floor structure. First, steps S110, S120, and S140 are executed to preliminarily complete the design of the reactor support structure 20, the layout of the vibration isolators 30, and the design of the vibration isolator support structure 40. Then, the parameters of each vibration isolator 30 are designed according to the preset vibration isolation efficiency and preset natural vibration frequency of the vibration isolation system, and the vibration response calculation is carried out under the action of the reactor vibration load by using finite element analysis to optimize the parameters of the vibration isolators 30 and the mass of the reactor support structure 20. Finally, a vibration isolation system that meets the vibration isolation performance target is obtained, solving the problem that the effect of the vibration isolation system in controlling the vibration influence of the reactor in the prior art is not good. In addition, the vibration isolation system isolates vibration by arranging the vibration isolators 30 under the reactor support structure 20. The reactor support structure 20 participates in the vibration of the reactor 10, significantly increasing the vibration participating mass of the equipment and effectively reducing the vibration response of the reactor 10.

[0065] It should be noted that the terms "first", "second", etc. in the specification, claims, and above-mentioned drawings of the present application are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0066] For the sake of convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" and the like can be used here to describe the spatial position relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the figure is inverted, the device described as "above other devices or structures" or "over other devices or structures" will be positioned "below other devices or structures" or "under other devices or structures" afterwards. Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the spatial relative descriptions used here.

[0067] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A design method for a vibration isolation system to control the influence of reactor vibration, characterized in that The vibration isolation system includes a reactor (10), a reactor support structure (20), a plurality of vibration isolators (30), and a vibration isolator support structure (40). The reactor (10) is disposed above and connected to the reactor support structure (20). The vibration isolator support structure (40) is disposed below the reactor support structure (20). A plurality of the vibration isolators (30) are all disposed between the reactor support structure (20) and the vibration isolator support structure (40). The method for designing the vibration isolation system to control the vibration influence of the reactor includes: Design the reactor support structure (20); design the layout of the vibration isolators (30) according to the design result of the reactor support structure (20); design the vibration isolator support structure (40); Design the parameters of each of the vibration isolators (30) according to the preset vibration isolation efficiency and preset natural vibration frequency of the vibration isolation system. Wherein, the parameters of the vibration isolator (30) include the stiffness and damping of the vibration isolator (30); Use finite element analysis to calculate the vibration response under the action of the reactor vibration load to obtain the vibration response of the vibration isolator support structure (40) and the vibration response of the reactor support structure (20); Judge whether the vibration response of the vibration isolator support structure (40) is less than a first preset threshold. When the vibration response of the vibration isolator support structure (40) is greater than or equal to the first preset threshold, reduce the preset natural vibration frequency of the vibration isolation system, and re-execute the step of designing the parameters of each of the vibration isolators (30) according to the preset vibration isolation efficiency and preset natural vibration frequency of the vibration isolation system. When the vibration response of the vibration isolator support structure (40) is less than the first preset threshold, judge whether the vibration response of the reactor support structure (20) is less than a second preset threshold. When the vibration response of the reactor support structure (20) is greater than or equal to the second preset threshold, increase the mass of the reactor support structure (20), and re-execute the step of designing the reactor support structure (20). When the vibration response of the reactor support structure (20) is less than the second preset threshold, complete the design of the vibration isolation system; The preset natural vibration frequency is less than or equal to 5 Hz; the preset vibration isolation efficiency is greater than or equal to 80%.

2. The vibration isolation system design method for controlling the influence of reactor vibration according to claim 1, characterized in that After designing the parameters of each of the vibration isolators (30) according to the preset vibration isolation efficiency and preset natural vibration frequency of the vibration isolation system, the method for designing the vibration isolation system to control the vibration influence of the reactor further includes: Calculate the deformation of each of the vibration isolators (30) in the vibration isolation system. When the deformations of the plurality of vibration isolators (30) are consistent, then execute the step of using finite element analysis to calculate the vibration response under the action of the reactor vibration load. When the deformations of the plurality of vibration isolators (30) are inconsistent, re-design the parameters of each of the vibration isolators (30).

3. The vibration isolation system design method for controlling the influence of reactor vibration according to claim 1, characterized in that The method for designing the reactor support structure (20) includes: Design the structural form, structural stiffness and structural mass of the reactor support structure (20) according to the size, mass, load distribution of the reactor (10), and the process requirements of the reactor chamber (50) for accommodating the reactor (10). Among them, the reactor support structure (20) is a floor slab, and the structural form of the reactor support structure (20) includes one of primary and secondary beams and grid beams.

4. The vibration isolation system design method for controlling the influence of reactor vibration according to claim 1, characterized in that, The vibration isolation system is used to be arranged in the accommodation chamber (60); the method for designing the reactor support structure (20) includes: Design the reactor support structure (20) to be spaced apart from the inner wall of the accommodation chamber (60).

5. The method for designing a vibration isolation system for controlling the influence of reactor vibration according to claim 3, wherein The method for designing the layout mode of the vibration isolators (30) according to the design result of the reactor support structure (20) includes: Design the layout position, the number and the size of the vibration isolators (30) according to the design result of the reactor support structure (20); among them, the vibration isolators (30) are arranged below the beam ends or below the beam-beam joints of the reactor support structure (20).

6. The vibration isolation system design method for controlling the vibration influence of a reactor according to claim 1, wherein After designing the layout mode of the vibration isolators (30) according to the design result of the reactor support structure (20), the vibration isolation system design method for controlling the vibration influence of the reactor further includes: calculating the loads at the layout positions of each vibration isolator (30). The method for designing the vibration isolator support structure (40) includes: designing the vibration isolator support structure (40) according to the loads calculated at the layout positions of each vibration isolator (30).

7. The method for designing a vibration isolation system for controlling the vibration influence of a reactor, as claimed in claim 1, is characterized in that The vibration isolator support structure (40) includes a support plate (41), and the support plate (41) is used to support the vibration isolator (30); the vibration isolator support structure (40) further includes support beams and / or support columns, and the support beams and / or the support columns are used to support the support plate (41). The method for designing the vibration isolator support structure (40) includes: Design the beam and column structural form, structural layout and structural stiffness of the vibration isolator support structure (40); among them, the structural layout of the vibration isolator support structure (40) is the layout condition of the support beams and the support columns.

8. A vibration isolation system, characterized in that, Designed by using the vibration isolation system design method for controlling the vibration influence of the reactor according to any one of claims 1 to 7, the vibration isolation system includes: A reactor support structure (20); A reactor (10), arranged above the reactor support structure (20) and connected to the reactor support structure (20); A vibration isolator support structure (40), arranged below the reactor support structure (20); A plurality of vibration isolators (30), and the plurality of vibration isolators (30) are arranged between the reactor support structure (20) and the vibration isolator support structure (40).

9. The vibration isolation system according to claim 8, characterized in that, The vibration isolation system is used to be arranged in the accommodation chamber (60), and the reactor support structure (20) is spaced apart from the inner wall of the accommodation chamber (60); the vibration isolator support structure (40) is connected to the inner wall of the accommodation chamber (60).

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