Iron core reactor with supporting type water cooler

Abstract

An iron core reactor with supporting type water coolers comprises an iron core assembly and the two water coolers which are fixedly arranged on the outer side of the iron core assembly and used for cooling the iron core assembly. The water cooler comprises a water cooler main body and a water cooling pipeline which is encapsulated in the water cooler main body. And the water cooler main body is arranged corresponding to the iron core assembly and is fixedly connected to the outer side of the iron core assembly through a heat-conducting adhesive. The two ends of the water cooling pipeline are connected with an input pipeline and an output pipeline of an external cooling water circulation system respectively, and therefore circulating water cooling is formed to cool the iron core assembly. The shape of the water cooler main body is consistent with that of the iron core assembly, and the two water coolers are connected together to form a ring consistent with that of the iron core assembly during assembly and surround the outer side of the iron core assembly, so that the two sides of the iron core assembly are tightly held, the overall structure of the iron core water cooler is more compact, and the service life of the iron core water cooler is prolonged. And the connection is safer and more reliable.

Description

Technical Field

[0001] This utility model relates to the field of iron core water coolers, and in particular to an iron core reactor with a support type water cooler. Background Technology

[0002] Valve reactors are key components in the converter valve devices of high-voltage direct current (HVDC) transmission systems, used to protect thyristors. Their purpose is to limit the high rates of current rise (di / dt) and voltage rise (du / dt) generated in the electrical circuit during the switching process of semiconductor thyristors. Therefore, valve reactors provide a reliable and efficient protection component for the thyristor's commutation operation. Consequently, valve reactors have become indispensable basic components in power systems, and iron-core saturated valve reactors are one of the main components of converter stations in HVDC transmission systems. The main components of a reactor are the conductive coil and the iron core. Due to its compact structure and small size, the reactor is generally cooled primarily through a water-cooling circulation system. The iron core is the main component of the reactor, occupying a large volume and mass within the reactor. It generates frequency oscillations in AC electromagnetic fields and produces a large amount of heat due to electromagnetic effects. Therefore, ensuring the structural stability and heat dissipation of the iron core during operation is a key factor in ensuring the long-term operation of the reactor.

[0003] In the prior art, utility model patent CN213583382U discloses an internally circulating water-cooled transformer core, which includes a heat exchanger mounted on a vertical yoke, and a mounting base for a cooling fan on one side of the transformer core. A semiconductor cooling chip is further mounted on the cooling fan. The cooling effect of the semiconductor cooling chip transfers heat to the heating pack to dissipate heat from the core.

[0004] The heat dissipation mechanism of the internal circulation water-cooled transformer core is complex and requires a separate fixing seat on one side of the core. The structure is scattered and easily damaged, and it is not conducive to the manufacture of small precision reactors. Summary of the Invention

[0005] In view of this, the present invention provides a core reactor with a reliable connection and a fastening function that supports a water cooler to solve the above problems.

[0006] A core reactor with a supported water cooler includes a core assembly and two water coolers fixedly disposed outside the core assembly for cooling the core assembly. The two water coolers are connected together to form a ring shape consistent with the core assembly and surround the outside of the core assembly. Each water cooler includes a cooler body and a water-cooled pipe encapsulated within the cooler body. The cooler body is correspondingly disposed to the core assembly and is fixedly connected to the outside of the core assembly by a thermally conductive adhesive. The two ends of the water-cooled pipe are respectively connected to the input and output pipes of an external cooling water circulation system, thereby forming a circulating water cooling system to cool the core assembly.

[0007] Furthermore, the core assembly includes at least two sets of core rings arranged side by side, at least one clamping piece sandwiched between two adjacent sets of cores, and an air gap disposed on the core rings.

[0008] Furthermore, the iron core ring is composed of two semi-ring iron cores, and the semi-ring iron cores are C-shaped or U-shaped structures.

[0009] Furthermore, the main body of the water cooler has a C-shaped or U-shaped structure consistent with the semi-ring iron core, and the open ends of the C-shaped or U-shaped structure of the main body of the water cooler are provided with connecting screw holes.

[0010] Furthermore, the dimensions of the water cooler body are set according to the number of core rings arranged side by side in the core assembly.

[0011] Furthermore, the water-cooled pipe includes a pipe body and two cooling water connection ports fixedly disposed at both ends of the pipe body.

[0012] Furthermore, the main body of the pipe is arranged in a zigzag pattern on one side of the main body of the water cooler.

[0013] Furthermore, both cooling water connection ports are located on the same side of the water cooler body.

[0014] Compared with existing technologies, the iron-core reactor with a supported water cooler provided by this utility model has a water cooler body, and a water-cooling pipe is provided on one side of the water cooler body to circulate cooling water to cool the iron core assembly. The water-cooling pipe is cast inside the water cooler body, and the shape of the water cooler body is consistent with that of the semi-ring iron core. During assembly, two water coolers are connected together to form a ring shape consistent with the iron core ring, and surround the outside of the iron core assembly, thereby holding the semi-ring iron cores on both sides of the iron core ring tightly together. Therefore, the water cooler can not only serve as a tensioning device for the iron core assembly, but also as a connection and transition device between the iron core assembly and other parts of the reactor, and has the advantages of compact structure, safety and reliability, and stable and reliable heat dissipation. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a core reactor with a supported water cooler provided by this utility model.

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of a core reactor with a supported water cooler.

[0017] Figure 3 for Figure 1 A schematic diagram of the water cooling pipe structure of a core reactor with a supported water cooler. Detailed Implementation

[0018] The specific embodiments of this utility model will be described in further detail below. It should be understood that the description of this utility model herein is not intended to limit the scope of protection of this utility model.

[0019] like Figures 1 to 3 The diagram shown is a structural schematic of a core reactor with a supported water cooler provided by this utility model. The core reactor with the supported water cooler includes a core assembly 10 and two water coolers 20 fixedly disposed outside the core assembly 10 for cooling the core assembly 10. It is conceivable that the core reactor with the supported water cooler should also include other functional components, such as vibration dampers, connecting components, encapsulation components, and assembly components, all of which are prior art known to those skilled in the art and will not be described in detail here.

[0020] The core assembly 10 includes at least two sets of core rings 11 arranged side by side, at least one clamping piece 12 sandwiched between two adjacent sets of core rings 11, and an air gap 13 disposed on the core rings 11.

[0021] The core ring 11 consists of two semi-ring cores 111, which is a key component in the reactor. It is primarily responsible for generating the required inductance to control the current. The semi-ring cores 111 are typically C-shaped or U-shaped, and can be constructed from multiple stacked silicon steel sheets to reduce eddy current losses and improve efficiency. The C-shaped or U-shaped open ends of the two semi-ring cores 111 are connected to each other to form a core ring 11. When assembling the core rings 11 into a complete reactor, multiple core rings 11 can be arranged in parallel according to the reactor's scale requirements to strengthen the magnetic force of the core assembly 10. The core ring 11 itself is existing technology and will not be described in detail here.

[0022] When two iron core rings 11 are arranged side by side, a clamping plate 12 is fixedly disposed between the two side-by-side semi-ring iron cores 111. The clamping plate 12 can be made of different materials such as steel, aluminum, and plastic. It is disposed between the two semi-ring iron cores 111 to maintain the stability of the semi-ring iron cores 111, reduce vibration and noise, and also help improve the efficiency and performance of the semi-ring iron cores 111. The clamping plate 12 itself is existing technology and will not be described in detail here.

[0023] When the C-shaped or U-shaped open ends of two semi-ring cores 111 are connected to each other to form the core ring 11, an air gap 13 is provided at the connection point of the two semi-ring cores 111. The air gap 13 can prevent magnetic saturation, increase magnetic reluctance, and reduce eddy current losses, thereby improving the performance of the reactor. The air gap 13 is a prior art and will not be described in detail here.

[0024] The water cooler 20 includes two interconnected water cooler bodies 21 and two water cooling pipes 22 respectively encapsulated within each of the water cooler bodies 21.

[0025] The water cooler body 21 is configured to correspond in shape to the semi-ring core 111. Specifically, when the semi-ring core 111 is C-shaped, the water cooler body 21 has a C-shaped structure; when the semi-ring core 111 is U-shaped, the water cooler body 21 also has a U-shaped structure. Furthermore, the inner contour of the water cooler body 21 matches the outer contour of the semi-ring core 111, facilitating the installation of the water cooler 20 on the outside of the core assembly 10. Connecting screw holes are provided at the free ends of the C-shaped or U-shaped structures of the water cooler body 21, allowing two water cooler bodies 21 to be connected together using multiple bolts, encircling the outside of the core ring 11. This tightens the two semi-ring cores 111 that make up the core ring 11, resulting in a more compact overall structure and a safer, more reliable connection for the core assembly 10. The dimensions of the water cooler body 21 are at least adapted to the dimensions of one of the semi-ring cores 111. Specifically, the dimensions can be set according to the number of core rings 11 arranged side-by-side in the core assembly 10, so that when multiple core rings 11 are arranged side-by-side, they can be accommodated within one water cooler 20. The core assembly 10 and the water cooler body 21 can be bonded together with a thermally conductive adhesive to ensure sufficient contact and heat conduction between them. It is conceivable that the water cooler body 21 should also have interfaces for installing other components of the reactor, such as vibration damper mounting holes, so that the core assembly 10 can be connected to other related components of the reactor through the water cooler body 21 to form a complete reactor.

[0026] The water-cooled pipe 22 includes a pipe body 221 and two cooling water connection ports 222 fixedly disposed at both ends of the pipe body 221.

[0027] The main pipe body 221 is fixedly disposed on one side of the C-shaped or U-shaped closed end of the water cooler body 21, and is used to transport coolant to cool the core assembly 10. The main pipe body 221 is U-shaped, so that both cooling water connection ports 222 of the main pipe body 221 are located on the same side of the water cooler body 21, facilitating connection to an external cooling water input pipe. It can be understood that when the water cooler body 21 is widened to accommodate the core assembly 10 composed of multiple core rings 11, the main pipe body 221 is no longer limited to a U-shaped structure and can also be arranged in a back-and-forth bending manner on one side of the water cooler body 21. When the main pipe body 221 is arranged in a back-and-forth bending manner, the intervals between the parallel portions of the main pipe body 221 are equal, which is beneficial for uniform heat dissipation. When the main pipe body 221 is arranged with multiple bends, the two cooling water connection ports 222 are still located on the same side of the water cooler body 21, thus facilitating connection to an external cooling water input pipe.

[0028] The two cooling water connection ports 222 are fixedly connected to the two ends of the pipe body 221 by welding. In use, one of the two cooling water connection ports 222 serves as the water inlet and the other as the water outlet, and is connected to the input and output pipes of the external cooling water circulation system respectively, thereby forming a circulating water cooling system to cool the iron core assembly 10.

[0029] When assembling the water cooler 20, the pipe body 221 is first bent according to the size of the water cooler body 21. Then, the two cooling water connection ports 222 are welded to both ends of the pipe body 221. Finally, while casting the water cooler body 21 using a mold, the pipe body 221 is fixedly sealed inside the water cooler body 21, thus forming the water cooler 20 as a whole. The two water coolers 20 are connected together by fasteners such as screws and nuts to form a ring shape consistent with the iron core assembly 10, thereby encircling the iron core assembly 10 inside.

[0030] Compared with the prior art, the iron-core reactor with a supported water cooler provided by this utility model has a water cooler body 21, and a water cooling pipe 22 is provided on one side of the water cooler body 21 to circulate cooling water to cool the iron core assembly 10. The water cooling pipe 22 is cast inside the water cooler body 21. The shape of the water cooler body 21 is consistent with that of the semi-ring iron core 111. During assembly, two water coolers 20 are connected together to form a ring shape consistent with the iron core ring 11, and surround the outside of the iron core assembly 10, thereby holding the semi-ring iron cores 111 on both sides of the iron core ring 11 tightly together. Therefore, the water cooler 20 can not only serve as a tensioning device for the iron core assembly 10, but also as a connection and transition device between the iron core assembly 10 and other parts of the reactor. It has the advantages of compact structure, safety and reliability, and stable and reliable heat dissipation.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. A core reactor with a supported water cooler, comprising a core assembly, characterized in that: The iron core reactor with a supported water cooler includes two water coolers fixedly disposed on the outside of the iron core assembly for cooling the iron core assembly. The two water coolers are connected together to form a ring consistent with the iron core assembly and surround the outside of the iron core assembly. Each water cooler includes a water cooler body and a water-cooled pipe filled in the water cooler body. The water cooler body is correspondingly disposed to the iron core assembly and is fixedly connected to the outside of the iron core assembly by a thermally conductive adhesive. The two ends of the water-cooled pipe are respectively connected to the input pipe and the output pipe of an external cooling water circulation system, thereby forming a circulating water cooling system to cool the iron core assembly.

2. The iron-core reactor with a supported water cooler as described in claim 1, characterized in that: The core assembly includes at least two sets of core rings arranged side by side, at least one clamping piece sandwiched between two adjacent sets of cores, and an air gap disposed on the core rings.

3. The iron-core reactor with a supported water cooler as described in claim 2, characterized in that: The iron core ring is composed of two semi-ring iron cores, and the semi-ring iron cores are C-shaped or U-shaped structures.

4. The iron-core reactor with a supported water cooler as described in claim 3, characterized in that: The main body of the water cooler is a C-shaped or U-shaped structure consistent with the semi-ring core, and the free ends of the C-shaped or U-shaped structure of the main body of the water cooler are provided with connecting screw holes.

5. The iron-core reactor with a supported water cooler as described in claim 2, characterized in that: The dimensions of the main body of the water cooler are set according to the number of the core rings arranged side by side in the core assembly.

6. The iron-core reactor with a supported water cooler as described in claim 1, characterized in that: The water-cooled pipe includes a pipe body and two cooling water connection ports fixed at both ends of the pipe body.

7. The iron-core reactor with a supported water cooler as described in claim 6, characterized in that: The main body of the pipe is arranged in a bend-back pattern on one side of the main body of the water cooler.

8. The iron-core reactor with a supported water cooler as described in claim 6, characterized in that: Both cooling water inlets are located on the same side of the main body of the water cooler.

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