Cable joint assembly for high-voltage induction coil and pouring mold thereof

Abstract

The utility model relates to the field of metal smelting, and discloses a cable connector assembly for a high-voltage induction coil and a pouring mold of the cable connector assembly, a cable connector can be completely coated with an insulating pouring material to form an integral structure, the risk of damage to insulation is remarkably reduced, and therefore the reliability and maintenance efficiency of equipment are improved. Comprising a first cable rack, a second cable rack, a cable joint and a cable clamping plate. The first cable rack and the second cable rack are respectively provided with a plurality of cable joints with preset intervals, the first cable rack comprises a first insulating part formed through pouring, the second cable rack comprises a second insulating part formed through pouring, the first insulating part and the corresponding cable joint are integrally formed through pouring, and the second insulating part and the corresponding cable joint are integrally formed through pouring. And the second insulating part and the corresponding cable joint are integrally formed through pouring. A through hole is formed in the cable clamping plate, the cable connector penetrates through the through hole, the cable clamping plate is pressed and covered on the first insulating part and the second insulating part, the cable clamping plate is arranged between the cable connector and the first insulating part and between the cable connector and the second insulating part, and the first cable rack and the second cable rack are positioned and connected through the cable clamping plate.

Description

Technical Field

[0001] The present application relates to the field of metal smelting, and in particular to a cable connector assembly for a high-voltage induction coil and a casting mold thereof. Background Art

[0002] Medium-frequency melting furnaces are a common type of equipment used in the metal smelting industry. They melt metal using a high-frequency magnetic field generated by an induction coil. These coils are subjected to the dual pressures of high current and high voltage during operation, making them susceptible to electrical discharges or sparks, particularly at cable joints. This phenomenon is often caused by poor or aging insulation in cable joints and is exacerbated by close proximity. Traditional solutions employ insulating pads and splints to physically isolate cable joints of different phases in an attempt to prevent electrical shorts and sparks.

[0003] However, the operating environment of medium-frequency furnaces is extremely harsh. The long-term accumulation of high temperatures and metal dust causes the performance of insulation components to gradually degrade. The dust in this environment can not only cause short circuits, but also significantly increase the probability of sparks between phases over time, thereby increasing equipment failure rates and maintenance costs. Although regular maintenance and "dust blowing" operations can temporarily alleviate the problem, this traditional maintenance method is time-consuming and increases operating costs. Summary of the Invention

[0004] The purpose of this application is to provide a cable connector assembly and a casting mold thereof for a high-voltage induction coil, which can significantly reduce the risk of insulation damage by completely covering the cable connector with an insulating casting material to form an integral structure, thereby improving the reliability and maintenance efficiency of the equipment.

[0005] The present application discloses a cable joint assembly for a high voltage induction coil, comprising: a first cable rack 1, a second cable rack 2, a cable joint 3 and a cable clamp 4;

[0006] The first cable rack 1 and the second cable rack 2 are respectively provided with a plurality of the cable connectors 3 with preset intervals. The first cable rack 1 includes a first insulating portion 11 formed by casting, and the second cable rack 2 includes a second insulating portion 21 formed by casting. The first insulating portion 11 and the corresponding cable connector 3 are integrally formed by the casting, and the second insulating portion 21 and the corresponding cable connector 3 are integrally formed by the casting.

[0007] The cable clamp 4 is provided with a through hole for passing the cable connector 3. The cable clamp 4 is pressed onto the first insulating portion 11 and the second insulating portion 21. In addition, the cable clamp 4 is arranged between the cable connector 3 and the first insulating portion 11 and the second insulating portion 21. The first cable rack 1 and the second cable rack 2 are positioned and connected by the cable clamp 4.

[0008] In a preferred embodiment, the first insulating portion 11 and the second insulating portion 21 are cast using epoxy resin.

[0009] In a preferred embodiment, it further includes a cable connector partition 5;

[0010] The cable joint partition 5 is arranged between the first cable rack 1 and the second cable rack 2, and is located between the cable joint 3 on the first cable rack 1 and the cable joint 3 on the second cable head. The cable joint partition 5 is configured to completely separate the cable joint 3 on the first cable rack 1 and the cable joint 3 on the second cable head.

[0011] In a preferred embodiment, it further includes an insulating sleeve 6;

[0012] The cable connector 3 and the cable rack are connected via a round tube. The insulating sleeve 6 is disposed between the cable clamp 4 and the outer wall of the round tube. The insulating sleeve 6 is configured to protect the round tube.

[0013] In a preferred example, the first cable rack 1 and the second cable rack 2 correspond to phase A and phase B of the alternating current, respectively.

[0014] In a preferred embodiment, it further comprises a water cooling joint (7);

[0015] The water cooling joint (7) is in fluid communication with the interior of the first cable rack 1 and / or the second cable rack 2, and the water cooling joint (7) is configured to pass water into the interior of the first cable rack 1 and / or the second cable rack 2 for cooling.

[0016] In a preferred example, an insulating mounting plate 8 is provided at the lower end of the first cable rack 1 , and the insulating mounting plate 8 is configured to be connected and fixed to the induction coil.

[0017] In a preferred example, the first cable rack 1 includes three cable connectors 3 , and the second cable rack 2 includes three cable connectors 3 .

[0018] In a preferred embodiment, the insulating sleeve 6 is a silicone rubber insulating sleeve 6 .

[0019] The present application also discloses a casting mold, which is used to form the first insulating portion 11 or the second insulating portion 21 as described above, wherein the casting mold includes a shell 9, and the shell 9 is provided with openings at both ends thereof for allowing the body of the first cable rack 1 and the body of the second cable rack 2 to pass through the casting mold, and the opening size of the casting mold matches the size of the two ends of the cable rack to prevent the casting material from leaking out of the opening;

[0020] The upper end of the shell 9 is open, so that the casting material can be poured into the shell 9 .

[0021] In the embodiment of the present application, by providing a plurality of cable connectors with preset spacing on the first cable rack and the second cable rack respectively, and forming an integrally molded insulating part by casting, the cable connectors can be completely covered with insulating casting material and integrally molded. The present application effectively eliminates the problem of metal dust accumulation between the cable connectors, thereby significantly reducing the probability of ignition between different phases that increases with the use time. The through hole of the cable clamp enables the cable connector to pass through, ensuring the fixation of the cable connector and the insulating part, thereby reducing failures caused by poor contact or external factors. In addition, the cable clamp is arranged between the cable connector and the insulating part, and the first cable rack and the second cable rack are positioned and connected by the cable clamp, thereby enhancing the mechanical stability of the entire assembly and ensuring the reliability of the cable connector under high-voltage and high-temperature working environments.

[0022] Furthermore, the first and second insulating parts, cast from epoxy resin, provide excellent mechanical strength and electrical insulation, ensuring the safety and stability of the cable joints under high voltage and harsh environments. The introduction of cable joint partitions and insulating sleeves further enhances electrical safety. The cable joint partitions completely separate the cable joints on different cable racks, effectively reducing electrical interference and short circuit risks, while the insulating sleeves cover the connection parts, improving the overall insulation performance.

[0023] Furthermore, by designing a casting mold that matches the size of the cable rack, it is possible to ensure that the casting material is evenly distributed around the cable rack, forming an insulating part that is integrally formed with the cable rack. The open upper end design of the shell simplifies the casting operation and improves operating efficiency, making the mold not only easy to use, but also easy to maintain and clean.

[0024] The specification of this application records a large number of technical features, which are distributed in various technical solutions. If all possible combinations of technical features of this application (i.e., technical solutions) are to be listed, the specification will be too lengthy. In order to avoid this problem, the various technical features disclosed in the above-mentioned invention content of this application, the various technical features disclosed in the various embodiments and examples below, and the various technical features disclosed in the accompanying drawings can be freely combined with each other to form various new technical solutions (these technical solutions are all deemed to have been recorded in this specification), unless such a combination of technical features is technically infeasible. For example, in one example, feature A+B+C is disclosed, and in another example, feature A+B+D+E is disclosed. Features C and D are equivalent technical means that play the same role. Technically, only one of them can be used, and it is impossible to use them at the same time. Feature E can be technically combined with feature C. Then, the solution of A+B+C+D should not be considered as having been recorded because it is technically infeasible, while the solution of A+B+C+E should be considered as having been recorded. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a cable connector assembly for a high-voltage induction coil according to one embodiment of the present application;

[0026] Figure 2 is a schematic structural diagram of a cable connector assembly for a high-voltage induction coil according to one embodiment of the present application;

[0027] Figure 3 1 is a schematic structural diagram of a cable connector assembly for a high-voltage induction coil before and after casting according to one embodiment of the present application;

[0028] Figure 4 is a schematic structural diagram of a casting mold according to one embodiment of the present application;

[0029] Figure 5 It is a structural schematic diagram of a casting mold according to one embodiment of the present application.

[0030] Description of reference numerals:

[0031] 1-first cable rack, 11-first insulating part, 2-second cable rack, 21-second insulating part, 3-cable joint, 4-cable clamp, 5-cable joint partition, 6-insulating sleeve, 7-water cooling joint, 8-insulating mounting fixing plate, 9-housing. DETAILED DESCRIPTION

[0032] In the following description, many technical details are provided to help readers better understand this application. However, those skilled in the art will understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in this application can be implemented.

[0033] the term

[0034] As used herein, the term "high voltage" refers to coil voltage levels exceeding 6000 volts. This definition is intended to define a voltage range where the voltage levels are higher than those typically found in low- and medium-voltage applications, particularly where high demands are placed on electrical insulation performance. High-voltage environments require insulation materials with high electrical strength to effectively withstand long-term voltage stress and prevent hazardous conditions such as electrical failures and arcing. This definition is not intended to limit the use of the term "high voltage" to other possible contexts or applications, and the specific voltage values may vary depending on different standards or industry practices.

[0035] As used herein, the term "cable connector" refers to the equipment used to connect water-cooled cables, which are typically used to power coils. Cable connectors serve as connection points that allow one or more cables to be connected to a power source, thereby providing the necessary current to power high-power devices or systems.

[0036] As used herein, the term "induction coil" refers to the component used in a medium-frequency induction furnace to generate a magnetic field, heating the molten metal through the principle of electromagnetic induction. The induction coil is the core component of a medium-frequency induction furnace. It generates a rapidly changing magnetic field through an alternating current. This magnetic field, in turn, induces eddy currents in the molten metal, generating heat and melting the metal.

[0037] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0038] The first embodiment of the present application relates to a cable connector assembly for a high voltage induction coil, the structure of which is shown in FIG. Figure 1-3 As shown, it includes: a first cable rack 1, a second cable rack 2, a cable connector 3 and a cable clamp 4.

[0039] The first cable rack 1 and the second cable rack 2 are respectively provided with a plurality of cable connectors 3 with preset spacings. The first cable rack 1 includes a first insulating portion 11 formed by casting, and the second cable rack 2 includes a second insulating portion 21 formed by casting. The first insulating portion 11 and the corresponding cable connector 3 are integrally formed by casting, and the second insulating portion 21 and the corresponding cable connector 3 are integrally formed by casting. Figure 3 A in FIG. 1 is a schematic diagram of the structure of the main body of the first cable rack 1 before casting. Figure 3B in the figure is a schematic structural diagram of the first cable rack 1 and the insulating part after casting. A through hole is provided on the cable clamp 4 for passing the cable connector 3. The cable clamp 4 is pressed onto the first insulating part 11 and the second insulating part 21. In addition, the cable clamp 4 is arranged between the cable connector 3 and the first insulating part 11 and the second insulating part 21. The first cable rack 1 and the second cable rack 2 are positioned and connected by the cable clamp 4.

[0040] In an optional embodiment, the first insulating portion 11 and the second insulating portion 21 can be cast using epoxy resin. Besides epoxy resin, the insulation portion of the cable connector 3 can also be cast using other materials. For example, polyurethane is suitable for forming insulating and protective layers because it can be cast and cured to form a hard or elastic layer after mixing. Silicone rubber can be cast in a liquid or semi-solid state and, after curing, forms an elastomer with excellent temperature resistance and electrical insulation. These materials have similar fluidity and curing characteristics to epoxy resin and can be selected based on insulation requirements and environmental conditions.

[0041] In an optional embodiment, a cable joint partition 5 may also be included. The cable joint partition 5 is arranged between the first cable rack 1 and the second cable rack 2, and is located between the cable joint 3 on the first cable rack 1 and the cable joint 3 on the second cable head. The cable joint partition 5 is configured to completely separate the cable joint 3 on the first cable rack 1 and the cable joint 3 on the second cable head.

[0042] In an optional embodiment, an insulating sleeve 6 may also be included. The cable connector 3 and the cable rack are connected through a round tube. The insulating sleeve 6 is arranged between the cable clamp 4 and the outer wall of the round tube. The insulating sleeve 6 is configured to protect the round tube.

[0043] In an optional embodiment, the first cable rack 1 and the second cable rack 2 may correspond to phase A and phase B of the alternating current, respectively.

[0044] In an optional embodiment, a water cooling joint 7 may be further included, which is connected to the internal fluid of the first cable rack 1 and / or the second cable rack 2, and the water cooling joint 7 is configured to pass water into the first cable rack 1 and / or the second cable rack 2 for cooling.

[0045] In an optional embodiment, it is characterized in that an insulating mounting plate 8 may be provided at the lower end of the first cable rack 1 , and the insulating mounting plate 8 is configured to be connected and fixed to the induction coil.

[0046] In an optional embodiment, the first cable rack 1 may include three cable connectors 3, and the second cable rack 2 may include three cable connectors 3. It should be understood that the number of cable connectors 3 mentioned is not limiting; rather, it is exemplary. The specific number of cable connectors 3 can be adjusted based on actual application needs, including but not limited to more or less than three. This configuration example is intended to illustrate possible implementations and is not intended to limit the actual number of cable connectors 3. This flexible configuration allows the number of connectors on the cable rack to be adapted to specific electrical system requirements and design parameters to meet a variety of operational and performance needs.

[0047] In an optional embodiment, the insulating sleeve 6 may be a silicone rubber insulating sleeve 6. However, the present invention is not limited to the use of silicone rubber as the insulating material. Depending on different application requirements and environmental conditions, other types of insulating materials may also be used to adapt to specific operating and performance requirements. For example, optional materials include but are not limited to polyurethane, polyimide, PVC (polyvinyl chloride), and other insulating materials with corresponding physical and chemical properties, so that the insulating sleeve 6 can be better adapted to different technical and environmental requirements.

[0048] In order to better understand the technical solution of the present application, a specific example is provided below for illustration. The details listed in the example are mainly for ease of understanding and are not intended to limit the scope of protection of the present application.

[0049] Example

[0050] This embodiment describes a cable connector assembly for a high-voltage induction coil, particularly suitable for medium-frequency induction furnaces that heat molten metal via electromagnetic induction. The cable connector assembly comprises a first cable rack 1 and a second cable rack 2, each equipped with three cable connectors 3 and associated water-cooling connectors 7 to support efficient thermal management and current distribution.

[0051] The first cable rack 1 and the second cable rack 2 correspond to phases A and B of the AC power, respectively. These two cable racks are connected and positioned by cable clamps 4, which have through-holes that allow cable connectors 3 to pass through while maintaining proper spacing. This design allows the cable racks to be electrically isolated while also providing physical support.

[0052] A cable connector partition 5 is installed between the first and second cable racks 1, 2, and between the corresponding cable connectors 3. This ensures that the cable connectors 3 on the two racks are completely isolated, preventing electrical interference and improving system safety. Furthermore, the outer surfaces of the first and second cable racks 1, 2 are molded with epoxy resin, forming a first insulating portion 11 integrated with the first cable rack and a second insulating portion 21 integrated with the second cable rack 2, providing excellent insulation performance and physical protection.

[0053] The cable connector 3 and the cable rack are connected via a circular tube. A silicone rubber insulation sleeve 6 is installed on the outer wall of the tube to protect the tube and ensure insulation. Insulated mounting plates 8 are also installed at the lower ends of the first and second cable racks 1 and 2, securing the cable racks to the induction coils and ensuring stable installation and safe operation.

[0054] Through the embodiments of this application, the cable rack, after being cast, exhibits excellent structural integrity and aesthetic appearance, while also possessing superior insulation performance. The lower portion of the cable rack is connected to the coil via a fixing plate made of insulating material. This design ensures that all metal conductive parts are completely enclosed, thereby enhancing overall safety and functionality.

[0055] Correspondingly, the second embodiment of the present application relates to a casting mold, which is used to form the first insulating part 11 or the second insulating part 21 as described above, wherein the casting mold includes a shell 9, and openings are provided at both ends of the shell 9 for allowing the main body of the first cable rack 1 and the main body of the second cable rack 2 to pass through the casting mold, and the opening size of the casting mold matches the size of the two ends of the cable rack to prevent the casting material from leaking from the opening, and the upper end of the shell 9 is open for pouring the casting material into the interior of the shell 9.

[0056] Optionally, the casting mold may include a first casting mold and a second casting mold, such as Figure 4 The first casting mold is shown as follows. The first casting mold is used to cast the first insulating portion 11 of the first cable rack 1. The shape and size of the openings at both ends of the first casting mold match the shape and size of the two ends of the first cable rack 1. Figure 5 The second casting mold is shown, which is used to cast the second insulating portion 21 of the second cable rack 2 . The shapes and sizes of the openings at both ends of the second casting mold match the shapes and sizes of the two ends of the second cable rack 2 .

[0057] It should be noted that in this patent application, relational terms such as first and second, etc., are used solely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. Without further limitation, an element specified by the phrase "comprising a" does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element. In this patent application, reference to performing an action in accordance with an element means performing the action in accordance with at least that element, including two situations: performing the action in accordance with that element alone, and performing the action in accordance with that element and other elements. Expressions such as "plurality," "multiple times," and "many" include "two," "twice," "two kinds," and "more than two," "more than two times," and "more than two kinds."

[0058] All documents mentioned in this application are considered to be included in their entirety in the disclosure of this application so that they can be used as a basis for modification when necessary. In addition, it should be understood that after reading the above disclosure of this application, those skilled in the art may make various changes or modifications to this application, and these equivalent forms also fall within the scope of protection claimed in this application.

Claims

1. A cable connector assembly for a high voltage induction coil, characterized in that: include: A first cable rack (1), a second cable rack (2), a cable connector (3) and a cable clamp (4); The first cable rack (1) and the second cable rack (2) are respectively provided with a plurality of the cable connectors (3) with a preset spacing, the first cable rack (1) includes a first insulating portion (11) formed by casting, the second cable rack (2) includes a second insulating portion (21) formed by casting, the first insulating portion (11) and the corresponding cable connector (3) are integrally formed by the casting, and the second insulating portion (21) and the corresponding cable connector (3) are integrally formed by the casting; The cable clamp (4) is provided with a through hole for allowing the cable connector (3) to pass through. The cable clamp (4) is pressed onto the first insulating portion (11) and the second insulating portion (21). In addition, the cable clamp (4) is arranged between the cable connector (3) and the first insulating portion (11) and the second insulating portion (21). The first cable rack (1) and the second cable rack (2) are positioned and connected through the cable clamp (4).

2. The cable connector assembly for a high voltage induction coil according to claim 1, wherein: The first insulating portion (11) and the second insulating portion (21) are cast using epoxy resin.

3. The cable connector assembly for a high voltage induction coil according to claim 1, wherein: Also includes a cable connector partition (5); The cable joint partition (5) is arranged between the first cable rack (1) and the second cable rack (2), and is located between the cable joint (3) on the first cable rack (1) and the cable joint (3) on the second cable head. The cable joint partition (5) is configured to completely separate the cable joint (3) on the first cable rack (1) from the cable joint (3) on the second cable head.

4. The cable connector assembly for a high voltage induction coil according to claim 1, wherein: Also includes an insulating sleeve (6); The cable connector (3) and the cable rack are connected via a round tube, the insulating sleeve (6) is arranged between the cable clamp (4) and the outer wall of the round tube, and the insulating sleeve (6) is configured to protect the round tube.

5. The cable connector assembly for a high voltage induction coil according to claim 1, wherein: The first cable rack (1) and the second cable rack (2) correspond to phase A and phase B of the alternating current respectively.

6. The cable connector assembly for a high voltage induction coil according to claim 1, wherein: Also includes a water cooling joint (7); The water cooling joint (7) is in fluid communication with the interior of the first cable rack (1) and / or the second cable rack (2), and the water cooling joint (7) is configured to pass water into the interior of the first cable rack (1) and / or the second cable rack (2) for cooling.

7. The cable connector assembly for a high voltage induction coil according to claim 1, wherein: An insulating mounting fixing plate (8) is provided at the lower end of the first cable rack (1), and the insulating mounting fixing plate (8) is configured to be connected and fixed to the induction coil.

8. The cable connector assembly for a high voltage induction coil according to claim 1, wherein: The first cable rack (1) includes three cable connectors (3), and the second cable rack (2) includes three cable connectors (3).

9. The cable connector assembly for a high voltage induction coil according to claim 4, wherein: The insulating sleeve (6) is a silicone rubber insulating sleeve (6).

10. A casting mold, characterized in that: The casting mold is used to form the first insulating portion (11) or the second insulating portion (21) according to any one of claims 1 to 2, wherein the casting mold comprises a shell (9), and openings are provided at both ends of the shell (9) for allowing the body of the first cable rack (1) and the body of the second cable rack (2) to pass through the casting mold, and the opening size of the casting mold matches the size of the two ends of the cable rack to prevent the casting material from leaking out of the opening; The upper end of the shell (9) is open, and is used to allow the casting material to be poured into the interior of the shell (9).

Images