Electric heating capacitor

Abstract

The utility model belongs to the technical field of electric heating capacitors, and particularly relates to an electric heating capacitor which comprises a capacitor body. The insulating sleeve is arranged at the top of the capacitor body and comprises a sleeve body with a cavity in the middle; the upper flange is arranged at one end, far away from the capacitor body, of the sleeve body; the lower flange is arranged at one end, close to the capacitor body, of the sleeve body; wherein the sleeve body is installed on the capacitor body in a pressing and embedding mode, and the capacitor body is provided with a preformed hole matched with the sleeve body. The beneficial effects of the utility model are that the sleeve body of the insulating sleeve is installed on the capacitor body in a pressing and embedding manner, thereby achieving the tight connection between the sleeve and the capacitor body. The pressing and embedding installation mode can ensure that the contact surfaces between the sleeve body and the capacitor body are fully attached, thereby reducing gaps, and improving the sealing degree of installation.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric heating capacitors, and particularly relates to an electric heating capacitor. BACKGROUND

[0002] The electric heating capacitor uses roughened polypropylene film and high-performance liquid as composite dielectric, and high-purity aluminum foil as (electric) electrode plate; the shell is a rectangular aluminum alloy oil tank, which is often equipped with a water cooling pipe. It is mainly used in controllable or adjustable AC power systems with a rated voltage of not more than 3.6 kV and a frequency of 50 kHz or below, and is specially used to improve the power factor of induction heating, melting, stirring or casting devices and similar application occasions.

[0003] The patent with the publication number CN220753158U discloses an outdoor composite insulation capacitor bushing, which comprises a capacitor and a bushing. The bushing is detachably connected to the capacitor through a fixing assembly. The bushing comprises an insulator, which is detachably connected to the capacitor through the fixing assembly. The outer surface of the insulator is provided with a corrosion-resistant layer. A twisted wire is arranged in the insulator, and one end of the twisted wire extends into the capacitor. A wiring guide rod is fixedly installed on the top of the insulator, and the other end of the twisted wire is fixedly connected to the wiring guide rod.

[0004] The above-mentioned patent detachably connects the bushing to the capacitor through the fixing assembly, so that the bushing can be replaced, etc. Although the replacement efficiency is improved, the sealing degree of installation is reduced, and improvement is needed. SUMMARY

[0005] The purpose of the present application is to provide an electric heating capacitor that can solve the above problems.

[0006] The purpose of the present application is to provide an electric heating capacitor, which comprises an electric capacitor body; further comprises an insulating bushing arranged at the top of the electric capacitor body, and the insulating bushing comprises:

[0007] a bushing body with a hollow cavity in the middle;

[0008] an upper flange arranged at one end of the bushing body away from the electric capacitor body;

[0009] a lower flange arranged at one end of the bushing body close to the electric capacitor body;

[0010] The bushing body is installed on the electric capacitor body by pressure embedding, and the electric capacitor body is provided with a reserved hole matched with the bushing body.

[0011] The electric heating capacitor adopts the above-mentioned electric heating capacitor, and the sleeve body of the insulating sleeve is installed on the capacitor body by pressure embedding, so that the tight connection between the sleeve and the capacitor body is realized. The pressure embedding installation mode can ensure that the contact surface between the sleeve body and the capacitor body is fully matched, and the gap is reduced, so that the sealing degree of the installation is improved. The improvement of the sealing degree helps to prevent external moisture, dust and other impurities from entering the capacitor, and protects the electrical performance and service life of the capacitor. At the same time, although the pressure embedding installation mode is adopted, when the sleeve needs to be replaced, the sleeve body can still be dismounted from the capacitor body by using special tools and according to specific dismounting steps, and a new sleeve can be installed.

[0012] The insulating sleeve includes a sleeve body, an upper flange and a lower flange, so that the installation of the sleeve on the capacitor body is more stable. A reserved hole adapted to the sleeve body is formed on the capacitor body, and the adaptability design ensures that the sleeve can be accurately installed on the capacitor body, improving the accuracy and efficiency of the installation.

[0013] Further, the insulating sleeve further comprises:

[0014] The twisted wire is arranged in the cavity and extends into the capacitor body at one end;

[0015] The wire guide rod is arranged at one end of the twisted wire adjacent to the upper flange and extends to the outside of the sleeve body and the upper flange, and is electrically connected with the twisted wire.

[0016] The middle part of the sleeve body is a cavity for accommodating the twisted wire and other internal components, and is installed on the capacitor body by pressure embedding to ensure the tight connection and sealing with the capacitor body. The upper flange is installed at the end of the sleeve body away from the capacitor, and the lower flange is installed at the end of the sleeve body close to the capacitor, in contact with the capacitor body and participating in forming a sealing structure. The twisted wire is installed in the cavity of the sleeve body and extends into the capacitor body at one end for electrical connection. The wire guide rod is installed at one end of the twisted wire adjacent to the upper flange and extends to the outside of the sleeve body and the upper flange, and is electrically connected with the twisted wire for guiding current.

[0017] The twisted wire and the wire guide rod together constitute an electrical connection channel of the capacitor to ensure smooth flow of current. The pressure embedding installation mode and the design of the upper and lower flanges together ensure the tight connection and sealing between the insulating sleeve and the capacitor body.

[0018] Further, the sleeve body further comprises:

[0019] The recess is arranged in the lower half of the sleeve body and gradually decreases in diameter from top to bottom;

[0020] The straight line part is arranged below the concave part, and the top of the straight line part is connected with the concave part, and the bottom of the straight line part is connected with the bottom of the sleeve body and forms a ring groove.

[0021] The upper end of the lower flange is in a trumpet shape which is outwardly folded, and the lower end is in a shape which is inwardly contracted, and the lower flange is matched with the concave part and the straight line part.

[0022] The concave part is located in the lower half of the sleeve body, and the diameter of the concave part gradually decreases from top to bottom, forming a rounded table structure. The design of the concave part helps to form a good match with the trumpet-shaped upper end of the lower flange, and enhances the connection stability and sealing between the sleeve body and the lower flange. The straight line part is located below the concave part and is in a original cylindrical shape, the top of the straight line part is connected with the concave part, and the bottom of the straight line part is connected with the bottom of the sleeve body and forms a ring groove. The straight line part provides a support structure for the sleeve body, and the ring groove is used to install a sealing element, further enhancing the sealing performance of the sleeve body.

[0023] The upper end of the lower flange is in a trumpet shape which is outwardly folded, and the lower end is in a shape which is inwardly contracted, and the lower flange is matched with the concave part and the straight line part. It can form a tight connection, not only enhancing the connection stability between the sleeve body and the capacitor body, but also further improving the sealing performance. In addition, the trumpet-shaped upper end helps to guide and fix the sleeve body, and the inwardly contracted lower end cooperates with the ring groove and other structures of the straight line part to form an effective seal.

[0024] Further, a sealing ring is arranged on the ring groove, and the outer wall of the sealing ring is in contact with the inner wall of the lower flange.

[0025] The bottom of the straight line part of the sleeve body is connected with the bottom of the sleeve body to form a ring groove, which provides a position for the installation of a sealing ring. The sealing ring is installed on the ring groove, and the outer wall of the sealing ring is in close contact with the inner wall of the lower flange. The sealing ring is made of elastic material, such as rubber, silicone, etc., and has good sealing performance and aging resistance. The installation of the sealing ring effectively fills the gap between the sleeve body and the lower flange, preventing external moisture, dust and other impurities from entering the capacitor. Not only does it enhance the sealing performance, but it also has a certain compression effect through its elastic force.

[0026] Further, auxiliary frames are arranged on both sides of the capacitor body, and lifting holes are arranged on the auxiliary frames.

[0027] The auxiliary frames are installed on both sides of the capacitor body, serving as additional support and fixing points for the capacitor, enhancing the stability of the capacitor during transportation and installation. The lifting holes are arranged on the auxiliary frames. It can facilitate the use of lifting equipment (such as hooks, lifting belts, etc.) to lift and transport the capacitor. It can improve the transportation efficiency. By setting the lifting holes, the capacitor can be easily lifted and transported using lifting equipment, avoiding the inconvenience and inconvenience of manual transportation, and also reducing the risk of damage to the capacitor that may occur during manual transportation.

[0028] The beneficial effects of the present application are:

[0029] 1. By adopting the press-in installation of the sleeve body of the insulating sleeve to the capacitor body, the close connection between the sleeve and the capacitor body is realized. The press-in installation can ensure the full adhesion of the contact surface between the sleeve body and the capacitor body, reduce the gap, and thus improve the sealing degree of the installation;

[0030] 2. The upper end of the lower flange is in the shape of an outwardly folded trumpet, and the lower end is in the shape of an inwardly tight contraction, which can cooperate with the recessed part and the straight part to form a close connection. Not only the connection stability between the sleeve body and the capacitor body is enhanced, but also the sealing property is further improved;

[0031] 3. The installation of the sealing ring effectively fills the gap between the sleeve body and the lower flange, and prevents the external moisture, dust and other impurities from entering the capacitor. Not only the sealing property is enhanced, but also the elastic force of the sealing ring plays a certain compression effect. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structural schematic view of the present application;

[0033] Figure 2 is a schematic view of the internal structure of the insulating sleeve of the present application;

[0034] Figure 3 is Figure 2 the enlarged view of A in the figure.

[0035] In the figure, the reference signs are: 100, capacitor body; 110, reserved hole; 200, insulating sleeve; 210, sleeve body; 211, recessed part; 212, straight part; 213, ring groove; 220, upper flange; 230, lower flange; 240, twisted wire; 250, wiring guide rod; 300, sealing ring; 400, auxiliary frame; 410, hoisting hole. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0037] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0038] The electric heating capacitor provided by the embodiments of the present application will be described in detail below in combination with the drawings, specific embodiments and application scenarios.

[0039] Embodiment 1:

[0040] As shown in Figure 1 and to Figure 2 , the embodiments of the present application provide

[0041] An electric heating capacitor, comprising a capacitor body 100; further comprising an insulating sleeve 200 arranged at the top of the capacitor body 100, the insulating sleeve 200 comprising:

[0042] A sleeve body 210 with a hollow cavity in the middle;

[0043] An upper flange 220 arranged at one end of the sleeve body 210 away from the capacitor body 100;

[0044] A lower flange 230 arranged at one end of the sleeve body 210 close to the capacitor body 100;

[0045] Wherein, the sleeve body 210 is installed on the capacitor body 100 by pressure embedding, and the capacitor body 100 is provided with a reserved hole 110 adapted to the sleeve body 210.

[0046] In some embodiments of the present application, as Figure 1As shown, the electric heating capacitor is installed by pressing the sleeve body 210 of the insulating sleeve 200 onto the capacitor body 100, thereby achieving a tight connection between the sleeve and the capacitor body 100. The pressing installation method can ensure that the contact surface between the sleeve body 210 and the capacitor body 100 is fully fitted, reducing the gap and improving the sealing degree of the installation. The improvement of the sealing degree helps to prevent external moisture, dust and other impurities from entering the capacitor, protecting the electrical performance and service life of the capacitor. At the same time, although the pressing installation method is relatively fixed, when the sleeve needs to be replaced, the sleeve body 210 can still be removed from the capacitor body 100 by using special tools and following specific disassembly steps, and a new sleeve can be installed.

[0047] The insulating sleeve 200 includes a sleeve body 210, an upper flange 220 and a lower flange 230, which makes the installation of the sleeve on the capacitor body 100 more stable. The capacitor body 100 is provided with a reserved hole 110 adapted to the sleeve body 210, and the adaptability design ensures that the sleeve can be accurately installed on the capacitor body 100, improving the accuracy and efficiency of the installation.

[0048] Embodiment 2:

[0049] The electric heating capacitor provided by the embodiment of the present application further comprises the following technical features in addition to the above technical features.

[0050] As shown in Figure 1 and Figure 2 The insulating sleeve 200 further comprises:

[0051] The twisted wire 240 is arranged in the cavity, and one end of the twisted wire 240 extends into the capacitor body 100;

[0052] The wire guide rod 250 is arranged at one end of the twisted wire 240 adjacent to the upper flange 220 and extends to the outside of the sleeve body 210 and the upper flange 220, and is electrically connected with the twisted wire 240.

[0053] In the embodiment of the present application, the middle part of the sleeve body 210 is a cavity for accommodating the wire 240 and other internal components, and is installed on the capacitor body 100 by press fitting, ensuring the tight connection and sealing with the capacitor body 100. The upper flange 220 is installed at the end of the sleeve body 210 away from the capacitor, and the lower flange 230 is installed at the end of the sleeve body 210 close to the capacitor, in contact with the capacitor body 100 and participating in forming a sealing structure. The wire 240 is installed in the cavity of the sleeve body 210, with one end extending into the capacitor body 100 for electrical connection. The wire guide 250 is installed at the end of the wire 240 adjacent to the upper flange 220 and extends to the outside of the sleeve body 210 and the upper flange 220, electrically connected with the wire 240 for guiding the current.

[0054] The wire 240 and the wire guide 250 together constitute an electrical connection channel of the capacitor, ensuring smooth flow of current. The press-fit installation method and the design of the upper and lower flanges 230 together ensure the tight connection and sealing between the insulating sleeve 200 and the capacitor body 100.

[0055] Embodiment 3:

[0056] The embodiment of the present application provides an electrothermal capacitor, in addition to the above technical features, the electrothermal capacitor of the embodiment of the present application further comprises the following technical features.

[0057] As shown in Figure 2 and Figure 3 , the sleeve body 210 further comprises:

[0058] The recessed part 211 is arranged at the lower half of the sleeve body 210, and the diameter gradually decreases from top to bottom;

[0059] The straight part 212 is arranged below the recessed part 211, the top of which is connected with the recessed part 211, and the bottom of which is connected with the bottom of the sleeve body 210 and forms a ring groove 213;

[0060] Wherein, the upper end of the lower flange 230 is in the shape of an outwardly folded horn, and the lower end is in the shape of an inwardly tight contraction, and cooperates with the recessed part 211 and the straight part 212.

[0061] In the embodiment of the present application, the recess 211 is located in the lower half of the sleeve body 210, and its diameter gradually decreases from top to bottom, forming a rounded table structure. The design of the recess 211 helps to form a good fit with the flared upper end of the lower flange 230, enhancing the connection stability and sealing between the sleeve body 210 and the lower flange 230. The straight part 212 is located below the recess 211 and is in the form of a original cylinder, with its top connected to the recess 211 and its bottom connected to the bottom of the sleeve body 210 and forming a ring groove 213. The straight part 212 provides a support structure for the sleeve body 210, while the ring groove 213 is used to install a sealing member, further enhancing the sealing performance of the sleeve body 210.

[0062] The upper end of the lower flange 230 is flared outward, and the lower end is constricted inward, which can cooperate with the recess 211 and the straight part 212 to form a tight connection. Not only does it enhance the connection stability between the sleeve body 210 and the capacitor body 100, but it also further improves the sealing performance. In addition, the flared upper end helps to guide and fix the sleeve body 210, while the constricted lower end cooperates with the ring groove 213 and other structures of the straight part 212 to form an effective seal.

[0063] Further, a sealing ring 300 is provided on the ring groove 213, and the outer wall of the sealing ring 300 is in contact with the inner wall of the lower flange 230.

[0064] The bottom of the straight part 212 of the sleeve body 210 is connected to the bottom of the sleeve body 210 to form a ring groove 213, which provides a position for the installation of the sealing ring 300. The sealing ring 300 is installed on the ring groove 213, and its outer wall is in close contact with the inner wall of the lower flange 230. The sealing ring 300 here is made of elastic material, such as rubber, silicone, etc., and has good sealing performance and aging resistance. The installation of the sealing ring 300 effectively fills the gap between the sleeve body 210 and the lower flange 230, preventing external moisture, dust and other impurities from entering the capacitor. Not only does it enhance the sealing performance, but it also has a certain compression effect through its elastic force.

[0065] Embodiment 4:

[0066] The embodiment of the present application provides an electrothermal capacitor, in addition to the above technical features, the electrothermal capacitor of the embodiment of the present application further comprises the following technical features.

[0067] As shown in Figure 1 The two sides of the capacitor body 100 are provided with auxiliary frames 400, and the auxiliary frames 400 are provided with lifting holes 410.

[0068] In the embodiment of the present application, the auxiliary frame 400 is installed on both sides of the capacitor body 100, as an additional support and fixing point of the capacitor, to enhance the stability of the capacitor during transportation and installation. The lifting hole 410 is provided on the auxiliary frame 400. The lifting equipment (such as hooks, lifting belts, etc.) can be used to lift and carry the capacitor conveniently. The transportation efficiency can be improved. By providing the lifting hole 410, the lifting equipment can be used to lift and carry the capacitor conveniently, avoiding the cumbersome and inconvenience of manual carrying, and reducing the risk of damage to the capacitor that may be caused during manual carrying.

[0069] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or apparatuses that include a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles, or apparatuses. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be pointed out that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0070] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-described specific embodiments, which are only illustrative and not limiting. Those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, which are all within the protection of the present application.

Claims

1. An electrothermal capacitor, comprising a capacitor body (100); characterized in that: It also includes an insulating sleeve (200) disposed on top of the capacitor body (100), characterized in that the insulating sleeve (200) comprises: The sleeve body (210) has a hollow center; The upper flange (220) is located at the end of the bushing body (210) away from the capacitor body (100); The lower flange (230) is located at one end of the bushing body (210) near the capacitor body (100); The sleeve body (210) is installed on the capacitor body (100) by press-fitting, and the capacitor body (100) is provided with a reserved hole (110) that is compatible with the sleeve body (210).

2. The electrothermal capacitor according to claim 1, characterized in that: The insulating sleeve (200) also includes: A stranded wire (240) is disposed in the cavity, and one end of the stranded wire (240) extends into the capacitor body (100); A wiring guide rod (250) is disposed at one end of the stranded wire (240) near the upper flange (220) and extends to the outside of the sleeve body (210) and the upper flange (220), and is electrically connected to the stranded wire (240).

3. The electrothermal capacitor according to claim 2, characterized in that: The sleeve body (210) also includes: A recess (211) is provided in the lower half of the sleeve body (210), and its diameter gradually decreases from top to bottom; The straight section (212) is located below the recess, with its top connected to the recess (211) and its bottom connected to the bottom of the sleeve body (210) to form an annular groove (213). The upper end of the lower flange (230) is flared outwards in a trumpet shape, and the lower end is constricted inwards, and it matches the recessed part (211) and the straight part (212).

4. The electrothermal capacitor according to claim 3, characterized in that: A sealing ring (300) is provided on the annular groove (213), and the outer wall of the sealing ring (300) is in contact with the inner wall of the lower flange (230).

5. The electrothermal capacitor according to claim 1, characterized in that: The capacitor body (100) is provided with auxiliary frames (400) on both sides, and the auxiliary frames (400) are provided with lifting holes (410).

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