Damping ring for electric reactor

Abstract

The utility model relates to the field of power electronic devices, in particular to a damping ring for an electric reactor. Comprising an upper shell, a lower shell which is detachably connected with the upper shell, a ring shaft which is detachably arranged between the upper shell and the lower shell, and a winding type annular iron core which is sleeved on the ring shaft and is formed by winding an iron-nickel base alloy belt. According to the utility model, the structural design is further optimized while the good electromagnetic performance of the damping ring is maintained, and the installation convenience, the heat dissipation performance and the universality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of power electronic devices, concretely relates to a damper ring for electric reactor. BACKGROUND

[0002] In modern power systems, electric reactors are widely used in current limiting, reactive power compensation and filtering scenarios as an important power equipment. In order to improve the performance and stability of electric reactors, damping rings are designed to reduce the vibration and noise generated during the operation of electric reactors, while enhancing the mechanical strength and electromagnetic performance of electric reactors. However, the existing damping ring design still has many problems in practical application, which limits the further improvement of its performance.

[0003] Traditional damping rings for electric reactors usually adopt an integrated structure. Although this design can meet the basic needs of electric reactors to some extent, it also exposes many shortcomings. First of all, the damping ring with an integrated structure is extremely inconvenient to install and maintain. Due to its integrity, the entire damping ring needs to be sleeved on the busbar of the electric reactor during installation. For large electric reactors or space-limited occasions, this installation method is not only complex to operate, but also easy to cause damage to the damping ring or improper installation, thereby affecting the performance of the electric reactor. Secondly, the heat dissipation performance of the integrated structure is limited. The electric reactor generates a large amount of heat during operation, and the damping ring, as a component in close contact with the electric reactor, directly affects the stability and service life of the electric reactor. In the existing design, the heat dissipation area of the damping ring is relatively small, which is difficult to meet the heat dissipation needs of high-power electric reactors, leading to overheating of the electric reactor after a long time of operation, thereby affecting its performance and life.

[0004] In addition, the integrated damping ring has poor universality. Due to the differences in size and shape of the busbar of electric reactors, the integrated damping ring is difficult to adapt to busbars of different specifications, resulting in the need for users to equip different specifications of damping rings for different models of electric reactors, increasing the use cost and maintenance complexity. At the same time, when pursuing high strength, the integrated structure often sacrifices the damping effect, and vice versa, making it difficult to balance the structural strength and damping performance.

[0005] In order to solve the above problems, there have also been attempts to improve the damping ring in the prior art. For example, patent number CN201788781U discloses a damping ring for a magnetic saturation electric reactor, which includes a box-shaped shell and a winding ring-shaped iron core located in the shell. Although this design improves the inductance and saturation point adjustment accuracy of the damping ring to some extent, it still has deficiencies in installation convenience, heat dissipation performance and universality. Therefore, how to further optimize the structural design of the damping ring while maintaining good electromagnetic performance to improve installation convenience, heat dissipation performance and universality has become a technical problem to be solved by those skilled in the art. The utility model discloses a damping ring for electric reactor, which can improve the installation convenience, heat dissipation performance and universality while maintaining good electromagnetic performance of the damping ring.

[0006] The damping ring for electric reactor can improve the installation convenience, heat dissipation performance and universality while maintaining good electromagnetic performance of the damping ring.

[0007] To achieve the above-mentioned purpose, the following technical solutions are adopted.

[0008] A damping ring for electric reactor comprises an upper shell, a lower shell detachably connected with the upper shell, a ring shaft detachably arranged between the upper shell and the lower shell, and a winding ring-shaped iron core made of a ferro-nickel-based alloy band.

[0009] Optionally, the connection part of the upper shell and the lower shell is respectively provided with a buckle structure matched with each other.

[0010] Optionally, the contact surface of the upper shell and the lower shell is respectively provided with a tooth-shaped part for corresponding occlusion.

[0011] Optionally, the contact surface of the upper shell and the lower shell is provided with a sealing gasket.

[0012] Optionally, the inside of the upper shell and the lower shell is hollow, and the inner wall surface of the upper shell and the lower shell is provided with a silicon rubber fixing layer for fixing the winding ring-shaped iron core.

[0013] Optionally, the winding ring-shaped iron core adopts a multi-layer winding structure, and each layer is isolated by an insulating material.

[0014] Optionally, the ring shaft comprises a shaft center, and a clamping ring is arranged at each end of the shaft center, the clamping ring is used for clamping between the upper shell and the lower shell, and the shaft center is further provided with a through hole.

[0015] Optionally, the buckle structure further comprises:

[0016] a guide groove arranged at the connection part of the upper shell and the lower shell, used for guiding the alignment and connection of the buckle structure;

[0017] an elastic clasp arranged at the connection part of the upper shell, used for detachable connection with the clamping groove on the lower shell;

[0018] a limiting protrusion arranged at the inner side of the clamping groove, used for limiting the insertion depth of the elastic clasp, so that the upper shell and the lower shell are tightly fitted;

[0019] a anti-loosening boss arranged at the end of the elastic clasp, used for preventing the elastic clasp from accidentally coming out of the clamping groove in the vibration process.

[0020] Optionally, the upper shell and the lower shell are both U-shaped, and the upper shell and the lower shell form a mounting groove in the middle after splicing.

[0021] Compared with the prior art, the damping ring has the following beneficial effects:

[0022] The damping ring is designed in a split type, the upper shell and the lower shell are connected through a detachable ring shaft, and the convenience of installation and maintenance is significantly improved. This design makes the installation process of the damping ring more simple and fast, and the user can easily install the upper shell and the lower shell on the bus bar of the reactor, and then fix them through the ring shaft without complicated sleeving operation. At the same time, the split type design is also convenient for maintaining and replacing the winding type annular core inside the damping ring, and reduces the maintenance cost and workload. The damping ring maintains good electromagnetic performance while further optimizing the structural design, improving the installation convenience, heat dissipation performance and universality.

[0023] By arranging the tooth-shaped part on the contact surface of the upper shell and the lower shell and arranging the silicon rubber fixing layer on the inner wall surface, the overall structural strength of the damping ring is enhanced, and the heat dissipation area is increased. In addition, the design of the ring shaft further optimizes the heat dissipation performance of the damping ring, so that the heat can be dissipated more effectively, thereby prolonging the service life of the damping ring and improving the operation stability of the reactor.

[0024] The damping ring is designed in a split type, the upper shell and the lower shell are both U-shaped, and the mounting groove is formed after splicing. This structural design makes the damping ring adapt to bus bars of different specifications, and improves the universality of the damping ring. The user does not need to provide damping rings of different specifications for reactors of different models, thereby reducing the use cost and maintenance complexity.

[0025] The winding type annular core adopts a multi-layer winding structure, and each layer is isolated by an insulating material. This design not only improves the inductance and adjustment precision of the saturation point, but also further enhances the damping effect. At the same time, by arranging the clamping ring and the through hole on the ring shaft, the damping ring maintains good electromagnetic performance while optimizing the balance between the structural strength and the damping performance.

[0026] The further optimization of the buckle structure, including the design of the guide groove, the elastic clamping hook, the limiting protrusion and the anti-loose boss, not only improves the installation efficiency of the damping ring, but also enhances the stability during operation. These structural features cooperate with each other to ensure the tight connection between the upper shell and the lower shell, prevent loosening or falling out due to vibration, and thereby improve the overall structural stability of the damping ring. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 It is a structure schematic view of the damping ring for the electric reactor.

[0028] Fig. 2 It is an internal structure schematic view of the damping ring for the electric reactor.

[0029] Fig. 3 It is a ring shaft structure schematic view of the damping ring for the electric reactor.

[0030] Among them: 1, the upper shell; 2, the lower shell; 3, the ring shaft; 31, the shaft center; 32, the clamping ring; 4, the circular boss; 5, the buckle structure; 6, the winding type ring core. DETAILED DESCRIPTION

[0031] The utility model will be described in detail below in combination with the embodiments and the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0032] The following detailed description is exemplary description, which aims to provide further detailed description of the utility model. Unless otherwise specified, all technical terms used in the utility model have the same meaning as that understood by the general technical personnel in the field to which the present application belongs. The terms used in the utility model are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the utility model.

[0033] As Figs. 1 to 3 The utility model relates to a damping ring for electric reactor, and aims to improve the installation convenience, heat dissipation performance, universality and structural stability of the damping ring by optimizing the structural design. The following is a detailed description of the specific embodiments of the utility model.

[0034] The damping ring for electric reactor of the utility model mainly comprises the following components:

[0035] The upper shell 1 is the upper structure of the damping ring, which is used for accommodating and fixing the winding type ring core.

[0036] The lower shell 2 is the lower structure of the damping ring, which cooperates with the upper shell 1 to form the complete damping ring structure.

[0037] The ring shaft 3 is arranged between the upper shell 1 and the lower shell 2, which is used for fixing the winding type ring core and ensuring the stability thereof during operation.

[0038] The winding type ring core is wound by iron-nickel-based alloy strip, which has the characteristics of high permeability and low eddy current loss, and is used for improving the inductance of the electric reactor and the precision of the saturation point adjustment.

[0039] Two symmetrical circular bosses 4 with equal height are arranged on the upper shell 1 and the lower shell 2 respectively.

[0040] In order to improve the convenience of installation and maintenance, the utility model adopts split type design, and the damping ring is divided into upper shell 1 and lower shell 2. This design allows users to install the upper shell 1 and the lower shell 2 respectively, and then connect them together through the ring shaft 3 to form a complete damping ring structure.

[0041] The upper shell 1 and the lower shell 2 are connected in a detachable manner, and a buckle structure 5 is adopted to achieve this. The buckle structure 5 includes a clamping groove arranged on the upper shell 1 and an elastic clamping hook arranged on the lower shell 2. The elastic clamping hook has a certain elastic deformation capacity, can be easily inserted into the clamping groove during installation, and can provide sufficient locking force after installation is completed to ensure that the upper shell 1 and the lower shell 2 are tightly fitted.

[0042] The buckle structure 5 includes a guide groove arranged at the connection of the upper shell 1 and the lower shell 2, which is used to guide the alignment and connection of the elastic clamping hook and the clamping groove. The design of the guide groove simplifies the installation process and improves the installation efficiency.

[0043] A limiting protrusion is arranged on the inner side of the clamping groove to limit the insertion depth of the elastic clamping hook. The limiting protrusion ensures that the elastic clamping hook is inserted to the appropriate position, prevents excessive insertion or loosening, and further improves the stability of the connection.

[0044] A anti-loosening boss is arranged at the end of the elastic clamping hook to prevent the elastic clamping hook from accidentally coming out of the clamping groove during vibration. The design of the anti-loosening boss effectively enhances the stability of the damping ring during operation and reduces the risk of loosening caused by vibration.

[0045] The upper shell 1 and the lower shell 2 are both U-shaped, and the middle part forms a mounting groove after splicing. The ring shaft 3 is clamped in the mounting groove. This design not only improves the versatility of the damping ring, but also optimizes its structural strength. Through the U-shaped design, the damping ring can adapt to different specifications of busbar, reducing the need to replace the damping ring due to different sizes of busbar.

[0046] The winding type ring core is the core component of the damping ring, which is made of iron-nickel-based alloy strip. This material has the characteristics of high permeability and low eddy current loss, which can significantly improve the inductance of the reactor and the adjustment precision of the saturation point.

[0047] The winding type ring core adopts a multi-layer winding structure, and each layer is isolated by insulating material. This design not only reduces the eddy current loss, but also improves the inductance and the adjustment precision of the saturation point. The multi-layer winding structure makes the core better adapt to the electromagnetic demand of the reactor during operation, improving the overall performance of the reactor.

[0048] The winding type annular core maintains a relatively fixed positional relationship with the upper shell 1 and the lower shell 2 through the ring shaft 3. The ring shaft 3 comprises a shaft center 31 and a clamping ring 32 arranged at both ends of the shaft center 31, and the clamping ring 32 is used for clamping between the upper shell 1 and the lower shell 2, so as to ensure the stability of the iron core during operation. In addition, the shaft center 31 is also provided with a through hole for further optimizing the heat dissipation performance.

[0049] In order to improve the heat dissipation performance of the damping ring, the utility model carries out a plurality of optimizations on the structure design.

[0050] The contact surfaces of the upper shell 1 and the lower shell 2 are respectively provided with corresponding tooth-shaped parts. The design of the tooth-shaped parts not only increases the heat dissipation area, but also enhances the connection strength between the upper shell 1 and the lower shell 2. Through the engagement of the tooth-shaped parts, heat can be more effectively transferred from the iron core to the shell and finally dissipated to the surrounding environment.

[0051] A silicon rubber fixing layer is arranged on the inner wall surface of the upper shell 1 and the lower shell 2, which is used for fixing the winding type annular core. The silicon rubber fixing layer not only provides good insulation performance, but also has a certain elasticity, which can absorb vibration and reduce noise during operation. In addition, the design of the silicon rubber fixing layer also optimizes the heat dissipation performance, so that heat can be more evenly distributed in the entire damping ring structure.

[0052] The shaft center 31 of the ring shaft 3 is provided with a through hole for optimizing the heat dissipation performance. The design of the through hole increases the air flow, further improving the heat dissipation efficiency. Through the through hole, heat can be more quickly dissipated to the surrounding environment, prolonging the service life of the damping ring and improving the operation stability of the electric reactor.

[0053] In order to ensure the insulation performance and sealing performance of the damping ring, the utility model discloses a sealing gasket arranged on the contact surface of the upper shell 1 and the lower shell 2. The sealing gasket not only can effectively prevent dust and moisture from entering the inside of the damping ring, but also can improve the insulation performance to ensure the safe operation of the electric reactor.

[0054] The sealing gasket is made of high-elastic and anti-aging rubber material, which can maintain good sealing performance during long-term operation. The elasticity of the rubber material can effectively absorb vibration, reduce noise, and ensure the dryness and cleanliness inside the damping ring.

[0055] The sealing gasket is installed between the contact surfaces of the upper shell 1 and the lower shell 2, and is sealed by the locking force of the buckle structure 5. During installation, the sealing gasket can be tightly attached to the contact surface to form a good sealing effect. Through the design of the sealing gasket, the damping ring can stably operate in various harsh environments, improving the reliability and service life of the electric reactor.

[0056] The split type design significantly improves the installation and maintenance convenience of the damping ring. Through the design of the buckle structure 5 and the ring shaft 3, the user can easily install the upper shell 1 and the lower shell 2 on the bus bar of the reactor respectively, and then connect the two together through the ring shaft 3. This design not only simplifies the installation process, but also reduces the installation time and workload.

[0057] Installation process

[0058] Step 1: Place the lower shell 2 on the bus bar of the reactor, and make sure it is in the correct position.

[0059] Step 2: Place the winding type ring-shaped iron core in the installation slot of the lower shell 2, and fix the iron core through the clamping ring 32 of the ring shaft 3.

[0060] Step 3: Place the upper shell 1 on the lower shell 2, and make sure it is aligned with the clamping slot of the lower shell 2.

[0061] Step 4: Connect the upper shell 1 and the lower shell 2 through the elastic clasp, and make sure the clasp is completely inserted into the clamping slot and locked.

[0062] Step 5: Check the installed damping ring, and make sure it is tightly attached to the bus bar without looseness.

[0063] Maintenance process

[0064] Step 1: Loosen the elastic clasp to separate the upper shell 1 and the lower shell 2.

[0065] Step 2: Check the running state of the winding type ring-shaped iron core, and replace the iron core or clean the internal dust if necessary.

[0066] Step 3: Check the wear of the sealing gasket, and replace the sealing gasket if necessary.

[0067] Step 4: Reinstall the upper shell 1 and the lower shell 2, and make sure the buckle structure 5 is locked.

[0068] Step 5: Check the installed damping ring, and make sure it is running normally without looseness.

[0069] The damping ring of the utility model adopts U-shaped design, and the installation slot is formed after the upper shell 1 and the lower shell 2 are spliced, which makes the damping ring adapt to bus bars of different specifications. Users do not need to equip damping rings of multiple specifications for different types of reactors, reducing the use cost and maintenance complexity. Through the optimization of the structure design, the damping ring further improves the universality and adaptability while maintaining good electromagnetic performance.

[0070] The mounting groove of the damping ring can adapt to busbars of different specifications, and users can select appropriate damping ring models according to actual needs. This design not only improves the universality of the damping ring, but also reduces the need to replace the damping ring due to different sizes of busbars.

[0071] The damping ring of the utility model is not only suitable for traditional reactors, but also can be applied to other devices that need damping and electromagnetic shielding. Through optimized structure design, the damping ring can maintain good performance in different application scenarios, improving its market competitiveness.

[0072] The utility model discloses a damping ring for reactors through the optimization buckle structure 5 and ring axle 3 design, improved the structure stability and reliability of damping ring obviously. The design of elastic clasp, limit protrusion and anti-loose boss not only ensures the close connection of upper shell 1 and lower shell 2, but also prevents loosening or falling out caused by vibration. Through these optimization designs, the damping ring can maintain stable performance during long-term operation, reducing the maintenance frequency and cost.

[0073] The design of buckle structure 5 ensures the close connection of upper shell 1 and lower shell 2, and the design of elastic clasp and limit protrusion further improves the stability of the connection. Through the design of anti-loose boss, the damping ring can effectively resist vibration during operation, reducing the performance decline caused by loosening.

[0074] The design of ring axle 3 not only fixes the winding type ring-shaped iron core, but also optimizes the structural strength of the damping ring. Through the design of clamping ring 32 and through-hole, the ring axle 3 can maintain stability during operation, ensuring the position of the iron core. This design not only improves the reliability of the damping ring, but also prolongs its service life.

[0075] The damping ring for reactors of the utility model through split design, optimized buckle structure 5, multi-layer winding winding type ring-shaped iron core, tooth design, silicon rubber fixing layer, sealing gasket and heat dissipation channel and other technical features, significantly improve the installation convenience, heat dissipation performance, universality and structural stability of the damping ring. Through these optimization designs, the damping ring not only maintains good electromagnetic performance, but also further improves its performance and reliability in practical application, meeting the high performance requirements of modern reactors for damping rings.

[0076] As known from common knowledge, the utility model can be realized by other embodiments without departing from the spirit or essential characteristics. Therefore, the above disclosed embodiments are only examples and are not the only ones. All changes within the scope of the utility model or within the scope equivalent to the utility model are included in the utility model.

Claims

1. A damping ring for a reactor, characterized by The utility model relates to a ring-shaped iron core of winding type, which comprises an upper shell (1), a lower shell (2) detachably connected with the upper shell (1), a ring shaft (3) detachably arranged between the upper shell (1) and the lower shell (2), and a winding type ring-shaped iron core made of iron-nickel alloy strip. The connecting part of the upper shell (1) and the lower shell (2) is respectively provided with a buckle structure (5) matched with each other.

2. The damping ring for a reactor according to claim 1, characterized in that The contact surface of the upper shell (1) and the lower shell (2) is respectively provided with a toothed part corresponding to the engagement.

3. The damping ring for a reactor according to claim 1, wherein The contact surface of the upper shell (1) and the lower shell (2) is provided with a sealing gasket.

4. The damping ring of claim 1, wherein The upper shell (1) and the lower shell (2) are internally extracted, and the inner wall surface of the upper shell (1) and the lower shell (2) is provided with a silicon rubber fixing layer for fixing the winding type ring-shaped iron core.

5. The damping ring of claim 1, wherein The winding type ring-shaped iron core adopts a multi-layer winding structure, and each layer is isolated by an insulating material.

6. The damping ring of claim 1, wherein The ring shaft (3) comprises a shaft center (31) and a clamping ring (32) arranged at both ends of the shaft center (31), the clamping ring (32) is used for clamping between the upper shell (1) and the lower shell (2), and the shaft center (31) is further provided with a through hole.

7. The damping ring of claim 1, wherein The buckle structure (5) further comprises:

8. The damping ring of claim 2, wherein, a guide groove arranged at the connecting part of the upper shell (1) and the lower shell (2) and used for guiding the alignment and connection of the buckle structure (5); an elastic clasp arranged at the connecting part of the upper shell (1) and used for detachable connection with the clamping groove on the lower shell (2); a limiting protrusion arranged on the inner side of the clamping groove and used for limiting the insertion depth of the elastic clasp, so that the upper shell (1) and the lower shell (2) are tightly fitted; an anti-loosening boss arranged at the end of the elastic clasp and used for preventing the elastic clasp from accidentally coming out of the clamping groove during vibration. The upper shell (1) and the lower shell (2) are both U-shaped, the middle part of the upper shell (1) and the lower shell (2) forms a mounting groove after splicing, and the ring shaft (3) is clamped in the mounting groove.

9. The damping ring of claim 1, wherein, ​

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