Damping device for electric reactor and electric reactor

Abstract

The invention belongs to the technical field of electric reactor shock resistance, and particularly relates to a shock absorption device for an electric reactor and the electric reactor. The damping device for the electric reactor comprises a flange body and a damping assembly, the flange body is used for installing the damping assembly between a porcelain bottle in an electric reactor accessory and an electric reactor body, and the damping assembly comprises a first buffering rigid structure, a second buffering rigid structure and a buffering elastic structure; a hollow structure is arranged in the first buffer rigid structure, and the first buffer rigid structure is mounted between the flange bodies to form an external rigid buffer layer; the hollow structure is filled with the buffer elastic structure, at least one elastic buffer layer arranged in the length direction of the hollow structure is formed, the second buffer rigid structure is embedded in each elastic buffer layer, and at least one inner second rigid buffer layer arranged in the height direction of the elastic buffer layer is formed. According to the damping device for the electric reactor, noise generated when the electric reactor operates under the action of magnetic force of an electromagnetic field is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of reactor anti-vibration, and in particular relates to a vibration damping device for a reactor and a reactor. Background Art

[0002] Reactors, also known as inductors, are devices that generate a magnetic field within the space they occupy when current flows through a conductor. Therefore, all current-carrying conductors generally have inductance. However, the inductance of a long, straight conductor carrying current is small, and the magnetic field generated is weak. Therefore, a typical reactor is a wire wound into a solenoid, called an air-core reactor. Sometimes, to increase the inductance of this solenoid, an iron core is inserted into the solenoid, creating an iron-core reactor. Reactance is divided into inductive reactance and capacitive reactance. The more scientific classification is that inductive reactance (inductors) and capacitive reactance (capacitors) are collectively referred to as reactors. However, because inductors existed first and were called reactors, capacitors today are capacitive reactances, while reactors specifically refer to inductors.

[0003] Reactors regulate the phase relationship between current and voltage to control current and voltage fluctuations in power systems, limiting current, stabilizing voltage, and suppressing harmonics. They regulate the reactance (inductive reactance) of circuits through their inductive properties. Reactors typically operate under high voltage and high current conditions, generating vibration and noise that can affect the normal operation, lifespan, and safety of electrical equipment. Traditional dry-type air-core reactors are installed on-site in substations via a star-shaped anchor flange and product accessories. Specifically, the reactor anchor flange (profile flange) is connected to the assembly accessories (porcelain bottle, fiberglass reinforced plastic support, transition piece, shock-absorbing pad, bracket), with multiple layers of 5-10mm silicone rubber gaskets between them. These are secured with high-strength anti-magnetic stainless steel bolts through holes throughout the assembly to ensure the stability, safety, and sealing of the dry-type air-core reactor's mechanical assembly. This reduces mechanical hard connections and the resulting mechanical fatigue. Furthermore, it reduces the noise generated by electromagnetic fields during extended outdoor operation.

[0004] Specifically, dry-type air-core reactors are assembled using traditional installation and assembly methods. The anchor flanges of the reactor body and the star-shaped arms of the product are fully welded using special equipment to ensure that the mechanical strength of the axial and radial buffers meets the design requirements during product assembly. The anchor flanges of the star-shaped frame are assembled and assembled with the assembly accessories of the reactor product, and conventional silicone rubber pads are used as a transition between the two. The existing dry-type air-core reactor assembly mode is the traditional installation method, such as Figure 1As shown, the reactor accessories are mainly installed in a building block style from bottom to top according to the established drawings, that is, the porcelain bottle 1, fiberglass pillar, rubber pad 2, reactor body 3, bird-proof cover 4 and umbrella 5 are installed in sequence from bottom to top. The reactor body 3 and the porcelain bottle 1 are fastened with full anti-magnetic stainless steel bolts in each hole to ensure the mechanical strength and mechanical stability between the two. The rubber pad 2 is used for buffering and padding between the two to avoid mechanical hard contact and hard connection between the reactor body 3 and the porcelain bottle 1, and the rubber pad 2 plays a buffering and shock-absorbing role.

[0005] The existing technology uses traditional rubber pads 2 as shock-absorbing pads, which play a buffering and shock-absorbing role when the reactor product is in operation. However, when the reactor is operated outdoors for a long time, the reactor product itself is energized and operates in a magnetic field, causing the operating temperature of the reactor to rise. As a result, the rubber pad shock-absorbing pad is easily oxidized under long-term high-temperature operation, and due to long-term outdoor operation, the temperature difference between day and night is large. The rubber pad shock-absorbing pad is easily oxidized and corroded due to long-term outdoor operation due to the large temperature difference between day and night, causing hard contact and hard connection between the reactor anchor flange and the assembly accessory porcelain bottle 1, thereby forming a rigid connection. Operation can easily cause deformation and warping around the anchor flanges of the reactor body, and there are obvious gaps, affecting the mechanical stability, safety and strength of the reactor body 3 and the additional assemblies, and causing mechanical fatigue. In addition, when the reactor product is operated for a long time, the reactor product is subjected to the action of the magnetic force of the operating electromagnetic field, causing the reactor to operate with noise, further affecting the operating environment and noise level of the substation. Summary of the Invention

[0006] The object of the present invention is to provide a shock absorbing device for a reactor, so as to solve the problem in the prior art that rubber pads used as shock absorbing pads are prone to oxidation and mechanical fatigue and produce noise during reactor operation.

[0007] In order to solve the above problems, the present invention proposes a shock absorbing device for a reactor, and the technical solution adopted is: A shock absorbing device for a reactor comprises a flange body and a shock absorbing assembly, wherein the flange body is used to install the shock absorbing assembly between a porcelain bottle in an accessory for the reactor and the reactor body, and the shock absorbing assembly comprises a first buffer rigid structure, a second buffer rigid structure and a buffer elastic structure, wherein the first buffer rigid structure has a hollow structure inside and is installed between the flange bodies to form an external rigid buffer layer; the buffer elastic structure is filled in the hollow structure to form at least one elastic buffer layer arranged along the length direction of the hollow structure, and the second buffer rigid structure is embedded in each elastic buffer layer to form at least an internal second rigid buffer layer arranged along the height direction of the elastic buffer layer.

[0008] Furthermore, the number of the elastic buffer layers is 2-3, and the elastic buffer layers are arranged along the length direction of the hollow structure.

[0009] Furthermore, the buffer elastic structure is a multi-layer damping material, the material of the multi-layer damping material is weather-resistant elastic polyester amine, and the elastic buffer layer formed therefrom is a corrugated multi-layer buffer layer.

[0010] Furthermore, both ends of the first buffer rigid structure along its length direction are semicircular structures, and the upper end and the lower end of the first buffer rigid structure are arranged in parallel, forming a hollow structure therein.

[0011] Furthermore, the material of the first buffer rigid structure is selected from high-strength alloy steel, carbon tool steel or stainless steel.

[0012] Furthermore, the second buffer rigid structure is a stainless steel plate, and the plane area of ​​the second buffer rigid structure is larger than the cross-sectional area of ​​the elastic buffer layer.

[0013] Furthermore, the number of the internal rigid buffer layers is 1-2, the internal rigid buffer layers are arranged along the height direction of the elastic buffer layer, and the internal rigid buffer layers in each elastic buffer layer are symmetrically arranged one by one.

[0014] Furthermore, the flange body includes an upper flange and a lower flange. The upper flange is arranged at the upper end of the first buffer rigid structure for connecting to the reactor body, and the lower flange is arranged at the lower end of the first buffer rigid structure for connecting to the porcelain bottle.

[0015] Furthermore, the vibration attenuation rate of the shock-absorbing device for the reactor is ≥30%, and the adaptive vibration frequency width is 50 Hz to 1 kHz.

[0016] The present application also provides a reactor, comprising the above-mentioned shock absorbing device for the reactor.

[0017] Compared with the prior art, this application has the following beneficial effects: The present invention is an improved invention. Through the integrated segmented design of the flange body and the shock-absorbing component, the present invention forms an external rigid buffer layer by a first buffer rigid structure, fills the effective three-dimensional space of the internal hollow structure of the first buffer rigid structure with a buffer elastic structure to form at least one elastic buffer layer, and embeds the second buffer rigid structure in each elastic buffer layer to form at least one internal rigid buffer layer, effectively increasing the mechanical cross-sectional area of ​​the buffer and the mechanical strength per unit cross-sectional area of ​​the buffer, thereby increasing the buffer dissipation area, and simultaneously reducing the axial and radial vibration capabilities, achieving multi-directional vertical pressure buffering dissipation of the axial and radial vibration energy of the reactor, thereby reducing the noise generated by the reactor under the action of the electromagnetic field and magnetic force during operation; at the same time, it solves the problem in the prior art that rubber pads used as shock-absorbing pads are prone to oxidation and mechanical fatigue. The shock-absorbing device for the reactor of the present invention has a compact structure and does not require an additional shock-absorbing device, effectively reducing the maintenance cost of the reactor product and extending its service life.

[0018] The number of the elastic buffer layers is 2-3, and the elastic buffer layers are arranged along the length direction of the hollow structure, which improves the multi-directional vertical pressure buffering energy consumption of the axial and radial vibration energy of the reactor while making the structure simple, compact and low-cost.

[0019] The buffer elastic structure is a multi-layer damping material, and the material selected for the multi-layer damping material is weather-resistant elastic polyester amine. The elastic buffer layer formed by it is a corrugated multi-layer buffer layer, which further improves the elastic buffering performance. The second buffer rigid structure is a stainless steel plate, and the plane area of ​​the second buffer rigid structure is larger than the cross-sectional area of ​​the elastic buffer layer, further increasing the mechanical cross-sectional area of ​​the buffer and the mechanical strength per unit cross-sectional area of ​​the buffer.

[0020] The number of the internal rigid buffer layers is 1-2, and the internal rigid buffer layers are arranged along the height direction of the elastic buffer layer, and the internal rigid buffer layers in each elastic buffer layer are symmetrically arranged one by one, which increases the mechanical cross-sectional area of ​​the buffer and the mechanical strength per unit cross-sectional area of ​​the buffer while making the structure simple, compact and low-cost.

[0021] The flange body includes an upper flange and a lower flange. The upper flange is located at the upper end of the first buffer rigid structure and is used to connect to the reactor body. The lower flange is located at the lower end of the first buffer rigid structure and is used to connect to the porcelain bottle. This structure increases the buffer dissipation area and simultaneously reduces the ability to axially and radially vibrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the assembly of a hollow reactor in the prior art; Figure 2 This is a front view of the structure of the vibration reduction device for a reactor of the present invention; Figure 3 is a top view of the structure of the vibration reduction device for a reactor of the present invention; Figure 4 is a schematic diagram of the assembly of the reactor of the present invention; In the figure, 1, porcelain bottle, 2, rubber pad, 3, reactor body, 4, bird-proof cover, 5, umbrella, 6, shock-absorbing device, 61, first buffer rigid structure, 62, stainless steel plate, 63, multi-layer damping material , 64, upper flange, 65, lower flange. DETAILED DESCRIPTION

[0023] As cited in the background art, the rubber pads used as shock-absorbing pads in the prior art are prone to mechanical fatigue and produce noise during the operation of the reactor. Therefore, the present invention provides a shock-absorbing device for a reactor, comprising a flange body and a shock-absorbing assembly, wherein the flange body is used to install the shock-absorbing assembly between the porcelain bottle in the reactor accessories and the reactor body; the shock-absorbing assembly is used to provide a shock-absorbing effect; the shock-absorbing assembly comprises a first buffer rigid structure, a second buffer rigid structure and a buffer elastic structure, wherein the first buffer rigid structure has a hollow structure inside, which is installed between the flange bodies and is used to install the second buffer rigid structure and the buffer elastic structure, and form an external rigid buffer layer; the buffer elastic structure is filled in the hollow structure to form at least one elastic buffer layer arranged along the length direction of the hollow structure, for forming an internal elastic buffer; the second buffer rigid structure is embedded in each elastic buffer layer to form at least one internal rigid buffer layer arranged along the height direction of the elastic buffer layer, for forming an internal rigid buffer. The aforementioned buffer layer structure effectively increases the mechanical cross-sectional area of ​​the buffer and the mechanical strength per unit cross-sectional area, thereby increasing the buffer dissipation area and simultaneously reducing axial and radial vibration capabilities. This achieves multi-directional vertical pressure buffering and dissipation of the axial and radial vibration energy of the reactor, thereby reducing the noise generated by the reactor under the influence of electromagnetic fields. Furthermore, it solves the problem of rubber pads being prone to oxidation and mechanical fatigue when used as shock-absorbing pads in the prior art. The shock-absorbing device for the reactor of the present invention has a compact structure and does not require additional shock-absorbing devices, effectively reducing the maintenance cost of the reactor product and extending its service life.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0026] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "front," "back," etc. indicate an orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the product of the invention is typically placed when in use. These terms are used solely to facilitate the description of the present invention and to simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "one," "two," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0028] Specific embodiment 1 of the vibration reduction device for a reactor of the present invention: In this embodiment, Figure 2 、 Figure 3 and Figure 4 As shown, the reactor shock absorber 6 comprises a flange body and a shock absorber assembly. The flange body is used to install the shock absorber assembly between the porcelain bottle 1 and the reactor body 3 in the reactor accessory. The shock absorber assembly includes a first rigid buffer structure 61, a second rigid buffer structure, and an elastic buffer structure. The first rigid buffer structure 61 has a hollow interior and is installed between the flange bodies to form an external rigid buffer layer. The elastic buffer structure fills the hollow structure, forming at least one elastic buffer layer arranged along the length of the hollow structure. The second rigid buffer structure is embedded in each elastic buffer layer, forming at least one internal rigid buffer layer arranged along the height of the elastic buffer layer. The reactor shock absorber 6 has a vibration attenuation rate of ≥30%, an applicable vibration frequency range of 50 Hz to 1 kHz, and high-temperature resistance.

[0029] Specifically, in this embodiment, two elastic buffer layers are arranged along the length of the hollow structure. This improves the multi-directional vertical pressure buffering of the reactor's axial and radial vibration energy while maintaining a simple, compact, and low-cost structure. The buffering elastic structure comprises a multilayer damping material 63 made of a weather-resistant elastic polyester amine. The resulting elastic buffer layer is a corrugated multilayer buffer layer. The use of a highly resilient weather-resistant elastic polyester amine as the multilayer damping material 63 further enhances the elastic buffering performance of the reactor shock absorber 6.

[0030] In other embodiments, the number of the elastic buffer layers is three, and the elastic buffer layers are arranged along the length direction of the hollow structure.

[0031] Specific embodiment 2 of the vibration reduction device for a reactor of the present invention: Based on the technical concept of the present invention described above, or based on the specific embodiment of the present invention described above, another embodiment is provided below.

[0032] In this embodiment, Figure 2 、 Figure 3 and Figure 4 As shown, the first buffer rigid structure 61 has semicircular structures at both ends along its length, and the upper and lower ends of the first buffer rigid structure 61 are arranged in parallel, forming a hollow structure inside. The material of the first buffer rigid structure 61 is selected from high-strength alloy steel, carbon tool steel, or stainless steel. The second buffer rigid structure is a stainless steel plate 62, and the planar area of ​​the second buffer rigid structure is larger than the cross-sectional area of ​​the elastic buffer layer, further increasing the mechanical cross-sectional area of ​​the buffer and the mechanical strength per unit cross-sectional area of ​​the buffer. Specifically, the width of the stainless steel plate 62 is 6 to 10 mm.

[0033] The number of internal rigid buffer layers is 1, and the internal rigid buffer layers in each elastic buffer layer are symmetrically arranged one by one, which increases the mechanical cross-sectional area of ​​the buffer and the mechanical strength per unit cross-sectional area of ​​the buffer while making the structure simple, compact and low-cost. The flange body includes an upper flange 64 and a lower flange 65. The upper flange 64 is arranged at the upper end of the first buffer rigid structure 61 for connection to the reactor body 3, and the lower flange 65 is arranged at the lower end of the first buffer rigid structure 61 for connection to the porcelain bottle 1. Specifically, the upper flange 64 is connected to the anchor flange of the reactor body 3 by stainless steel bolts; the lower flange 65 is connected to the porcelain bottle 1 to ensure that the shock-absorbing flange and the assembly accessories increase the buffer dissipation area through the shock-absorbing device 6, and simultaneously reduce the axial and radial vibration capabilities.

[0034] In other embodiments, the number of the internal rigid buffer layers is 2, the internal rigid buffer layers are arranged along the height direction of the elastic buffer layer, and the internal rigid buffer layers in each elastic buffer layer are symmetrically arranged one by one.

[0035] Specifically, the assembly method of the shock absorbing device for the reactor of the present application is as follows: First, multiple layers of damping material 63 are filled into the first buffer rigid structure 61 to form two elastic buffer layers; Secondly, the stainless steel plate 62 is embedded in the multi-layer damping material 63 to form an internal rigid buffer layer; Finally, the upper flange 64 is connected to the upper end of the first buffer rigid structure 61 through stainless steel bolts, and the lower flange 65 is connected to the lower end of the first buffer rigid structure 61 through stainless steel bolts.

[0036] The present invention also provides a reactor, comprising the above-mentioned shock absorbing device for the reactor.

[0037] Specifically, the assembly method of the reactor of the present application is: Install the reactor accessories, namely, the porcelain bottle 1, shock absorber, rubber pad 2, reactor body 3, bird cover 4, and umbrella 5, in order from bottom to top. The upper flange 64 is connected to the anchor flange of the reactor body 3 with stainless steel bolts, and the lower flange 65 is connected to the porcelain bottle 1 with stainless steel bolts. A shock absorber 6 is installed between the reactor body 3 and the porcelain bottle 1 to avoid a rigid connection between the two bodies and to provide a buffering and shock-absorbing effect.

[0038] Through the above description of the specific embodiments of the shock-absorbing device for the reactor of the present invention, it can be seen that the shock-absorbing device for the reactor of the present invention includes a flange body and a shock-absorbing assembly. The flange body is used to install the shock-absorbing assembly between the porcelain bottle in the reactor accessory and the reactor body; the shock-absorbing assembly is used to provide a shock-absorbing effect; the shock-absorbing assembly includes a first buffer rigid structure, a second buffer rigid structure and a buffer elastic structure. The first buffer rigid structure has a hollow structure inside, which is installed between the flange bodies and is used to install the second buffer rigid structure and the buffer elastic structure, and form an external rigid buffer layer; the buffer elastic structure is filled in the hollow structure to form at least one elastic buffer layer arranged along the length direction of the hollow structure, which is used to form an internal elastic buffer; the second buffer rigid structure is embedded in each elastic buffer layer to form at least one internal rigid buffer layer arranged along the height direction of the elastic buffer layer, which is used to form an internal rigid buffer. The aforementioned buffer layer structure effectively increases the mechanical cross-sectional area of ​​the buffer and the mechanical strength per unit cross-sectional area, thereby increasing the buffer dissipation area and simultaneously reducing axial and radial vibration capabilities. This achieves multi-directional vertical pressure buffering and dissipation of the axial and radial vibration energy of the reactor, thereby reducing the noise generated by the reactor under the influence of electromagnetic fields. Furthermore, it solves the problem of rubber pads being prone to oxidation and mechanical fatigue when used as shock-absorbing pads in the prior art. The shock-absorbing device for the reactor of the present invention has a compact structure and does not require additional shock-absorbing devices, effectively reducing the maintenance cost of the reactor product and extending its service life.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be based on the claims. Any equivalent structural changes made using the contents of the description and drawings of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A vibration damping device for a reactor, characterized in that: The invention comprises a flange body and a shock-absorbing component, wherein the flange body is used to install the shock-absorbing component between a porcelain bottle (1) in an accessory for a reactor and a reactor body (3), and the shock-absorbing component comprises a first buffer rigid structure (61), a second buffer rigid structure and a buffer elastic structure, wherein the first buffer rigid structure (61) has a hollow structure inside and is installed between the flange bodies to form an external rigid buffer layer; the buffer elastic structure is filled in the hollow structure to form at least one elastic buffer layer arranged along the length direction of the hollow structure; the second buffer rigid structure is embedded in each elastic buffer layer to form at least one internal rigid buffer layer arranged along the height direction of the elastic buffer layer.

2. The vibration damping device for a reactor according to claim 1, characterized in that: The number of the elastic buffer layers is 2-3, and the elastic buffer layers are arranged along the length direction of the hollow structure.

3. The vibration damping device for a reactor according to claim 2, characterized in that: The buffer elastic structure is a multi-layer damping material (63), the material of the multi-layer damping material (63) is weather-resistant elastic polyester amine, and the elastic buffer layer formed therefrom is a corrugated multi-layer buffer layer.

4. The vibration damping device for a reactor according to claim 1, wherein: The two ends of the first buffer rigid structure (61) along its length direction are semicircular structures, and the upper end and the lower end of the first buffer rigid structure (61) are arranged in parallel, forming a hollow structure inside.

5. The vibration damping device for a reactor according to claim 4, characterized in that: The material of the first buffer rigid structure (61) is selected from high-strength alloy steel, carbon tool steel or stainless steel.

6. The vibration damping device for a reactor according to claim 1, characterized in that: The second buffer rigid structure is a stainless steel plate (62), and the plane area of ​​the second buffer rigid structure is larger than the cross-sectional area of ​​the elastic buffer layer.

7. The vibration damping device for a reactor according to claim 6, characterized in that: The number of the internal rigid buffer layers is 1-2, the internal rigid buffer layers are arranged along the height direction of the elastic buffer layer, and the internal rigid buffer layers in each elastic buffer layer are symmetrically arranged one by one.

8. The vibration damping device for a reactor according to any one of claims 1 to 7, characterized in that: The flange body comprises an upper flange (64) and a lower flange (65); the upper flange (64) is arranged at the upper end of the first buffer rigid structure (61) and is used to be connected to the reactor body (3); the lower flange (65) is arranged at the lower end of the first buffer rigid structure (61) and is used to be connected to the porcelain bottle (1).

9. The vibration damping device for a reactor according to any one of claims 1 to 7, characterized in that: The vibration attenuation rate of the shock-absorbing device for the reactor is ≥30%, and the applicable vibration frequency range is 50 Hz to 1 kHz.

10. A reactor, characterized in that: The invention comprises the vibration reduction device for a reactor according to any one of claims 1 to 9.

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