Dry-type air-core reactor vibration suppression structure based on particle damping vibration absorption and installation method

Abstract

The application discloses a kind of dry-type hollow reactor vibration suppression structures based on particle damping vibration absorption, dry-type hollow reactor includes multiple layers of winding, vibration suppression structure uses insulating material, the vibration suppression structure includes the damping particle cavity between the two layers of the winding of being arranged in adjacent, the damping particle cavity is filled with damping particle.The application also discloses a kind of dry-type hollow reactor vibration suppression structures based on particle damping vibration absorption installation method, including steps S1, damping particle is filled into the damping particle cavity, then the damping particle cavity is pumped vacuum;S2, dry-type hollow reactor assembly when damping particle cavity is pasted between the two layers of winding of adjacent;S3, after dry-type hollow reactor assembly is completed, to the damping particle cavity inflation so that damping particle cavity expands and is fixed between the two layers of winding of adjacent.The application can effectively absorb the body vibration of dry-type hollow reactor, improve the safety and stability of dry-type hollow reactor.

Description

Technical Field

[0001] This invention relates to dry-type air-core reactors, and more particularly to a vibration suppression structure for dry-type air-core reactors based on particle damping vibration absorption. Background Technology

[0002] Dry-type air-core reactors are widely used in high-voltage direct current transmission systems. During operation, they carry a rich variety of harmonic currents, which in turn cause vibrations due to alternating electromagnetic forces, radiating audible noise with complex frequencies. On the one hand, prolonged operation of the reactor can cause component loosening and overheating, affecting the safe and stable operation of the dry-type reactor. On the other hand, the audible noise generated by the vibration of the dry-type reactor can cause serious pollution to the surrounding environment. Therefore, suppressing the vibration of dry-type air-core reactors during operation is of great significance.

[0003] Using vibration absorption technology to suppress the vibration of dry-type air-core reactors is an effective method. Particle-damped vibration absorption is a composite damping technology that effectively combines impact damping and friction damping. Its characteristic is that an appropriate number of particles are filled into the cavities or structural voids created in the vibrating structure. When the main structure vibrates due to external excitation, the particles collide continuously with each other and with the collision walls, exchanging momentum. Simultaneously, the mutual collisions and friction between the particles dissipate the vibration energy of the main structure, thereby achieving the purpose of controlling the vibration of the main structure. Particle-damped vibration absorbers are simple and efficient passive control devices with advantages such as good durability, high reliability, insensitivity to temperature changes, and ease of use in harsh environments. In recent years, particle-damped vibration absorption technology has gained increasing attention due to its simplicity and efficiency, and has begun to be applied in the fields of building and machinery vibration reduction. However, cases of its application in the vibration suppression of dry-type air-core reactors have not yet emerged. Several problems exist: First, dry-type air-core reactors generate strong electric and magnetic field environments during operation. Traditional particle damping vibration absorbers have metal components, especially the damping particles, which are generally made of metal. When operating in a strong electromagnetic field environment, they will generate magnetoelectric effects, causing the metal components to heat up and even damaging the dry-type reactor itself. Second, traditional particle damping vibration absorbers are generally installed externally. Dry-type air-core reactors are generally multi-layer winding structures. Installing them only externally to absorb vibrations from the outermost winding is inefficient and cannot meet the overall vibration suppression requirements of the dry-type reactor. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a vibration suppression structure for dry air reactors based on particle damping that can effectively absorb the body vibration of dry air reactors and improve the safety and stability of dry air reactors.

[0005] The present invention further provides an installation method for the above-mentioned vibration suppression structure of a dry hollow reactor based on particle damping vibration absorption.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A vibration suppression structure for a dry-type air-core reactor based on particle damping is disclosed. The dry-type air-core reactor includes multiple windings. The vibration suppression structure is made of insulating material and includes a damping particle cavity disposed between two adjacent windings. The damping particle cavity is filled with damping particles.

[0008] As a further improvement to the above technical solution: the vibration suppression structure also includes an air inlet pipe, on which a shut-off valve is provided, and the damping particle cavity is made of elastic material and connected to the air inlet pipe.

[0009] As a further improvement to the above technical solution: the air intake pipe is connected to the damping particle cavity through a one-way air intake diaphragm.

[0010] As a further improvement to the above technical solution: the one-way air intake diaphragm is a rubber sheet, and the air intake pipe is a nylon tube.

[0011] As a further improvement to the above technical solution: the damping particle cavity includes multiple separated parts, which are distributed along the axial direction of the dry air reactor, and the parts are connected to the air inlet pipe.

[0012] As a further improvement to the above technical solution: the split body is provided with a filling port, and the filling port is equipped with a removable cap.

[0013] As a further improvement to the above technical solution: multiple damping particle cavities are provided, and the multiple damping particle cavities are evenly distributed along the circumference of the dry air reactor.

[0014] As a further improvement to the above technical solution: the damping particle cavity is made of rubber, and the damping particles are made of ceramic.

[0015] As a further improvement to the above technical solution: the damping particles are spherical particles.

[0016] An installation method for a vibration suppression structure of a dry air-core reactor based on particle damping vibration absorption includes the following steps:

[0017] S1. Fill the damping particles into the damping particle cavity, and then evacuate the damping particle cavity.

[0018] S2. When assembling a dry-type air-core reactor, the damping particle cavity is pasted between two adjacent winding layers.

[0019] S3. After the dry-type air-core reactor is assembled, air is injected into the damping particle cavity to expand the damping particle cavity and fix it between the two adjacent winding layers.

[0020] Compared with the prior art, the advantages of the present invention are as follows:

[0021] The advantages of the vibration suppression structure for dry hollow reactors based on particle damping vibration absorption of this invention are as follows:

[0022] 1) Existing particle damping vibration absorbers generally have metal components, especially the damping particles, which are generally made of metal. When operating in the strong electromagnetic field environment of dry air reactors, they will produce magnetoelectric effect, causing the metal components to heat up, and may even damage the dry air reactor itself. However, the vibration suppression structure of this invention uses insulating material, so there is no problem of metal components heating up.

[0023] 2) Existing particle damping vibration absorbers are generally installed outside the equipment. Dry air reactors are generally multi-layer winding structures. Only the outermost winding is absorbed by the external installation, which is inefficient and cannot meet the overall vibration suppression requirements of dry air reactors. However, the present invention is installed between the windings of the dry air reactor, which can realize the overall vibration suppression of the reactor and has a better vibration suppression effect.

[0024] 3) The structure is simple, the cost is low and the installation is convenient. The material, size and quantity of particles in the particle damping vibration absorber can be determined by particle damping vibration absorption dynamics calculation based on the specific parameters of the object torsional vibration suppression, so as to achieve the ideal effect of suppressing torsional vibration.

[0025] The advantages of the installation method of the vibration suppression structure for dry air reactors based on particle damping vibration absorption of the present invention are as follows:

[0026] Before installing the damping particle cavity into the dry-type air-core reactor after filling it with damping particles, a vacuum process is first performed to shrink the damping particle cavity. During the assembly of the dry-type air-core reactor, it is initially fixed by adhesive bonding. After the dry-type air-core reactor is assembled, it is expanded by inflating, thereby forming a compressive force with the inner and outer windings. On the one hand, this can achieve reliable installation and fixation, and on the other hand, it can better suppress the vibration generated by the dry-type air-core reactor body. Moreover, the operation is simple and convenient. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the vibration suppression structure of the dry hollow reactor based on particle damping vibration absorption according to the present invention.

[0028] Figure 2 This is a magnified schematic diagram of the vibration suppression structure in this invention.

[0029] The labels in the diagram represent: 1. Dry-type air-core reactor; 11. Winding; 2. Vibration suppression structure; 21. Air inlet pipe; 22. Damping particle chamber; 23. Shut-off valve; 24. One-way air inlet diaphragm; 25. Damping particles; 26. Filling port. Detailed Implementation

[0030] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] Figures 1 to 2 This invention illustrates an embodiment of the vibration suppression structure for a dry-type air-core reactor based on particle damping vibration absorption. In this embodiment, the dry-type air-core reactor 1 includes multi-layer windings 11. The vibration suppression structure 2 is made of insulating material and includes a damping particle cavity 22 disposed between two adjacent windings 11. The damping particle cavity 22 is filled with damping particles 25.

[0036] The vibration suppression structure 2 in this embodiment is made of insulating material, so there is no problem of heat generation in the metal parts. It is installed between the windings 11 of the dry air reactor 1, which can suppress the vibration of the dry air reactor 1 as a whole, and the vibration suppression effect is better.

[0037] Furthermore, in this embodiment, the vibration suppression structure 2 also includes an air inlet pipe 21, on which a shut-off valve 23 is provided. The damping particle cavity 22 is made of elastic material and is connected to the air inlet pipe 21. Before the vibration suppression structure 2 is installed into the dry-type air-core reactor 1, the damping particle cavity 22 is evacuated to cause it to contract. After the dry-type air-core reactor 1 is assembled, the shut-off valve 23 is opened, and air is introduced through the air inlet pipe 21 to expand the damping particle cavity 22, thereby forming a compressive force with the inner and outer windings 11. This not only ensures reliable installation and fixation but also better suppresses the vibration generated by the dry-type air-core reactor 1 body, and is simple and convenient to operate.

[0038] Furthermore, in this embodiment, the air intake pipe 21 is connected to the damping particle chamber 22 via a one-way air intake diaphragm 24. During inflation, the one-way air intake diaphragm 24 collapses, and compressed air fills the damping particle chamber 22. After inflation stops, the air pressure in the damping particle chamber 22 is greater than the pressure in the air intake pipe 21, and the one-way air intake diaphragm 24 self-seales the connection between the damping particle chamber 22 and the air intake pipe 21. The structure is simple and easy to use.

[0039] In a preferred embodiment, the unidirectional air intake diaphragm 24 is a rubber sheet. Rubber sheets have good insulation and elasticity, are low in cost, avoid overheating problems, and are conducive to achieving good sealing performance. The air intake pipe 21 is a nylon tube. Nylon tubes have good insulation, avoid overheating problems, and are inexpensive. More preferably, the air intake pipe 21 is made of reinforced nylon material.

[0040] Furthermore, in this embodiment, the damping particle cavity 22 includes multiple separated parts, which are distributed along the axial direction of the dry-type air-core reactor 1. Each part is connected to the air inlet pipe 21 and is self-sealed by the aforementioned unidirectional air inlet diaphragm 24. The damping particle cavity 22, comprising multiple separated parts, facilitates uniform vibration suppression throughout the axial direction of the dry-type air-core reactor 1 (the damping particles 25 within the integrated damping particle cavity 22 tend to concentrate in the lower part of the cavity under gravity), resulting in a simple and effective structure.

[0041] Furthermore, in this embodiment, the split body is provided with a filling port 26, and the filling port 26 is equipped with a detachable cap (for example, the cap filling port 26 is connected by a thread or snap-fit). The filling port 26 can be used to fill or replace different types of damping particles 25 into the damping particle cavity 22. The size and filling rate of the damping particles 25 are calculated or simulated based on the dynamic theory of the vibration suppression structure 2 after inflation. Alternatively, the filling port 26 can be opened and the shut-off valve 23 can be closed to evacuate the damping particle cavity 22. Preferably, the filling port 26 and the cap are also made of nylon material, and more preferably, reinforced nylon material is used.

[0042] As a preferred embodiment, multiple damping particle cavities 22 are provided, and the multiple damping particle cavities 22 are evenly distributed along the circumference of the dry air reactor 1, which is beneficial to achieving a uniform vibration suppression effect at all points along the circumference of the dry air reactor 1.

[0043] In a preferred embodiment, the damping particle cavity 22 is made of rubber, which has good insulation and elasticity, low cost, and avoids the problem of heat generation. It also expands after inflation, thus reliably fixing itself between the inner and outer windings 11. The damping particles 25 are made of ceramic, which has good insulation and excellent vibration suppression. More preferably, the damping particles 25 are made of high-density ceramic particles.

[0044] Furthermore, in this embodiment, the damping particles 25 are spherical particles, which is beneficial for achieving a uniform vibration suppression effect in all directions. Of course, other shapes can also be used in other embodiments.

[0045] Example 2

[0046] The installation method of the vibration suppression structure of the dry hollow reactor based on particle damping vibration absorption in this embodiment includes the following steps:

[0047] S1. Fill the damping particles 25 into the damping particle cavity 22, and then evacuate the damping particle cavity 22. The specific steps are: first open the cover of the filling port 26, then fill, evacuate the vacuum after filling, and finally close the cover.

[0048] S2. When assembling the dry-type air-core reactor 1, the damping particle cavity 22 is pasted between two adjacent layers of windings 11.

[0049] S3. After the dry-type air-core reactor 1 is assembled, air is injected into the damping particle cavity 22 to expand it and fix it between the two adjacent winding layers 11. The specific steps are as follows: the shut-off valve 23 is opened, and compressed air is input through the air inlet pipe 21. At this time, the one-way air inlet diaphragm 24 collapses, and compressed air is injected into the damping particle cavity 22. After the inflation stops, the shut-off valve 23 is closed. The air pressure in the damping particle cavity 22 is greater than the pressure in the air inlet pipe 21, and the one-way air inlet diaphragm 24 self-seales the connection between the damping particle cavity 22 and the air inlet pipe 21.

[0050] The installation method of this embodiment first involves vacuuming to shrink the damping particle cavity 22. During the assembly of the dry air reactor 1, it is initially fixed by adhesive. After the dry air reactor 1 is assembled, it is expanded by inflating, thereby forming a compressive force with the inner and outer windings 11. This not only achieves reliable installation and fixation, but also better suppresses the vibration generated by the dry air reactor 1 body. Furthermore, the operation is simple and convenient.

[0051] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A vibration suppression structure for a dry-type air-core reactor based on particle damping, wherein the dry-type air-core reactor (1) comprises multi-layer windings (11), characterized in that: The vibration suppression structure (2) is made of insulating material. The vibration suppression structure (2) includes a damping particle cavity (22) disposed between two adjacent windings (11), and the damping particle cavity (22) is filled with damping particles (25). The installation method of the vibration suppression structure (2) includes the following steps: S1. Fill the damping particles (25) into the damping particle cavity (22), and then evacuate the damping particle cavity (22); S2. When assembling the dry-type air-core reactor (1), the damping particle cavity (22) is pasted between the two adjacent winding layers (11); S3. After the dry-type air reactor (1) is assembled, air is filled into the damping particle cavity (22) to make the damping particle cavity (22) expand and be fixed between the two adjacent winding layers (11).

2. The vibration suppression structure for a dry hollow reactor based on particle damping vibration absorption according to claim 1, characterized in that: The vibration suppression structure (2) also includes an air inlet pipe (21), on which a shut-off valve (23) is provided, and the damping particle cavity (22) is made of elastic material and connected to the air inlet pipe (21).

3. The vibration suppression structure for a dry hollow reactor based on particle damping vibration absorption according to claim 2, characterized in that: The air intake pipe (21) is connected to the damping particle cavity (22) through a one-way air intake diaphragm (24).

4. The vibration suppression structure for a dry hollow reactor based on particle damping vibration absorption according to claim 3, characterized in that: The one-way air intake diaphragm (24) is a rubber sheet, and the air intake pipe (21) is a nylon pipe.

5. The vibration suppression structure for a dry hollow reactor based on particle damping vibration absorption according to claim 3, characterized in that: The damping particle cavity (22) includes multiple partitions, which are distributed along the axial direction of the dry air reactor (1) and are connected to the air inlet pipe (21).

6. The vibration suppression structure for a dry hollow reactor based on particle damping vibration absorption according to claim 5, characterized in that: The split body is provided with a filling port (26), and the filling port (26) is equipped with a removable cap.

7. The vibration suppression structure for a dry hollow reactor based on particle damping vibration absorption according to any one of claims 1 to 6, characterized in that: The damping particle cavity (22) is provided in multiple ways, and the multiple damping particle cavities (22) are evenly distributed along the circumference of the dry air reactor (1).

8. The vibration suppression structure for a dry hollow reactor based on particle damping vibration absorption according to any one of claims 1 to 6, characterized in that: The damping particle cavity (22) is made of rubber, and the damping particles (25) are made of ceramic.

9. The vibration suppression structure for a dry-type hollow reactor based on particle damping vibration absorption according to any one of claims 1 to 6, characterized in that: The damping particles (25) are spherical particles.

Images