Catenary vulcanization pipe heating device

Abstract

The utility model discloses a catenary vulcanization pipe heating device which comprises a vulcanization pipe, flanges are arranged at the front end and the rear end of the vulcanization pipe, insulation sealing gaskets are arranged in the middles of the flanges, and a plurality of copper bars are arranged along the end faces of the flanges at the front end and the rear end of the vulcanization pipe respectively. A first connecting row and a second connecting row are arranged on the periphery of the vulcanization pipe, a plurality of copper bars at the front end of the vulcanization pipe are respectively connected with the first connecting row, and a plurality of copper bars at the rear end of the vulcanization pipe are respectively connected with the second connecting row; the input end and the output end of the low-voltage end of the transformer are respectively provided with connecting wires, and the input end and the output end of the low-voltage end of the transformer are respectively connected with the first connecting bar and the second connecting bar through the connecting wires. The device effectively increases the heating area of the flange, and ensures the insulating property and the service life of the insulating sealing gasket; each section of vulcanization pipe can be independently heated, accurate control over the temperature of each section of vulcanization pipe in the catenary is achieved, the production requirement is met, and the production stability and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of catenary vulcanizing tube heating, and specifically relates to a catenary vulcanizing tube heating device. Background Technique

[0002] The production process of medium-voltage cables includes eight processes: wire drawing, stranding, triple extrusion, copper tape wrapping, cabling, inner sheath, armor, and outer sheath. Among them, the most important process is the triple extrusion process. This process generally uses a CCV catenary for processing and manufacturing. Its production method is the co-extrusion of three materials (shield + insulation + shield), heating through multiple sections of vulcanizing tubes, and then gradually cooling.

[0003] In the related technology, at present, the heat receiving area at the flange of the vulcanizing tube is too small. During the production process of the catenary, due to the high temperature at the flange of each heating section of the vulcanizing tube, the insulating gasket inside the flange will be overheated and carbonized after being heated for a long time, resulting in air leakage at the flange. As a result, the equipment needs to be shut down to replace the insulating gasket, reducing the work continuity and seriously affecting the production quality and efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a catenary vulcanizing tube heating device to solve at least one of the problems and defects mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A catenary vulcanizing tube heating device, comprising:

[0007] A vulcanizing tube, flanges are arranged at both the front and rear ends of the vulcanizing tube, an insulating gasket is arranged in the middle of the flange, and a plurality of copper bars are respectively arranged along the end faces of the front and rear flanges of the vulcanizing tube;

[0008] A first connection row and a second connection row are arranged on the outer periphery of the vulcanizing tube. A plurality of copper bars at the front end of the vulcanizing tube are respectively connected to the first connection row, and a plurality of copper bars at the rear end of the vulcanizing tube are respectively connected to the second connection row;

[0009] A transformer, connection wires are respectively arranged at the input end and the output end of the low-voltage end of the transformer. The input end and the output end of the low-voltage end of the transformer are respectively connected to the first connection row and the second connection row through the connection wires.

[0010] The catenary vulcanizing tube heating device according to this solution has at least the following technical effects:

[0011] The catenary vulcanizing tube heating device can effectively increase the heat receiving area of the flange by arranging a number of copper bars on the flange end faces at the front and rear ends of the vulcanizing tube, preventing local overheating of the flange during the heating process of the vulcanizing tube. Since the heat receiving area of the flange is small, it is easy for the flange to generate local overheating, resulting in overheating and carbonization of the insulating gasket inside the flange, causing gas leakage at the flange, effectively avoiding shutdown maintenance, thus affecting the work continuity, ensuring the insulation performance and effect of the insulating gasket, and enabling the adjacent two sections of the vulcanizing tube to be insulated and isolate heat; and each section of the vulcanizing tube is provided with this heating device, which can heat each section of the vulcanizing tube separately, realizing precise control of the temperature of each section of the vulcanizing tube in the catenary, thus meeting the production requirements and improving the production stability and efficiency.

[0012] As a further solution of the present invention: a number of the copper bars are all L-shaped, including a first folded edge and a second folded edge, and the first folded edge is connected to the end face of the flange.

[0013] Since a number of copper bars are all L-shaped, including a first folded edge and a second folded edge, and the first folded edge is connected to the end face of the flange, the first folded edge of the L-shaped copper bar can be in close contact with the flange end face, effectively increasing the heat conduction area of the flange, improving the heat conduction efficiency of the flange heat, avoiding the risk of local heating of the flange due to its small heat receiving area, thus reducing the risk of overheating and carbonization of the insulating gasket inside the flange, improving the insulation effect and service life of the insulating gasket, ensuring that the adjacent two sections of the vulcanizing tube maintain relatively independent temperature control, meeting the production temperature requirements of different vulcanizing tubes, and improving the production quality and efficiency.

[0014] As a further solution of the present invention: the second folded edges of a number of copper bars at the front end of the vulcanizing tube are respectively connected to the first connecting row, and the second folded edges of a number of copper bars at the rear end of the vulcanizing tube are respectively connected to the second connecting row.

[0015] Since the second folded edges of a number of copper bars at the front end of the vulcanizing tube are respectively connected to the first connecting row, and the second folded edges of a number of copper bars at the rear end of the vulcanizing tube are respectively connected to the second connecting row, the input end and the output end of the low-voltage end of the transformer are connected to the two ends of the vulcanizing tube through connecting wires respectively. By adopting the heating method of short-circuit current, the current at the input end and the output end of the low-voltage end of the transformer is respectively transmitted to a number of copper bars through the first connecting row and the second connecting row, and then the current is respectively transmitted to the flanges at the front and rear ends of the vulcanizing tube through a number of copper bars, and finally the current is transmitted to the vulcanizing tube through the flanges, causing resistance at both ends of the vulcanizing tube and realizing the heating of the vulcanizing tube; at the same time, after the flange is heated, it transfers the heat to a number of copper bars, effectively increasing the heat receiving area of the flange and ensuring that the flange will not be locally heated to cause overheating and carbonization of the insulating gasket.

[0016] As a further solution of the utility model: a connection frame is arranged between the second folded edge of the copper bar at the rear end of the vulcanization pipe and the second connection row.

[0017] Since the vulcanization pipe is relatively long, if the second folded edges of several copper bars at the rear end of the vulcanization pipe are directly connected to the second connection row, it will cause the connecting wires to be too long, affecting on-site production and aesthetics. By arranging a connection frame between the second folded edges of several copper bars at the rear end of the vulcanization pipe and the second connection row, it can effectively avoid the overlong use of connecting wires, prevent the risk of production safety accidents, and effectively improve the safety and cleanliness of production.

[0018] As a further solution of the utility model: stainless steel plates are respectively arranged on the first folded edges of several said copper bars, and one end of the stainless steel plate is connected to the arc edge of the flange.

[0019] As a further solution of the utility model: an arc portion is arranged at one end of the stainless steel plate, and the arc portion is adapted to the arc edge of the flange.

[0020] Since stainless steel plates are respectively arranged on the first folded edges of several copper bars, one end of the stainless steel plate is connected to the arc edge of the flange, an arc portion is arranged at one end of the stainless steel plate, and the arc portion is adapted to the arc edge of the flange, the surface area of the stainless steel plate in contact with the arc edge of the flange is increased, further increasing the heat transfer efficiency and the heat receiving area of the flange, improving the overall heat uniformity of the flange, enabling better heat transfer from the flange, avoiding overheating and carbonization of the insulating gasket due to local overheating of the flange, further improving the insulation effect and service life of the insulating gasket, and thus ensuring the production stability and efficiency of the catenary vulcanization pipe. Description of the Drawings

[0021] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the drawings.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a catenary vulcanization pipe heating device;

[0023] Figure 2 It is Figure 1 a partial enlarged view of part A of

[0024] Figure 3 It is a front view structural schematic diagram of a catenary vulcanization pipe heating device;

[0025] Figure 4 It is a partial structural schematic diagram of a catenary vulcanization pipe heating device;

[0026] Figure 5 It is a structural schematic diagram of the connection between the flange and the stainless steel plate of a catenary vulcanization pipe heating device;

[0027] Figure 6 It is a schematic structural diagram of a stainless steel plate of a catenary vulcanizing tube heating device.

[0028] Reference numerals:

[0029] 1, vulcanizing tube; 2, flange; 21, insulating gasket; 3, copper bar; 31, first folded edge; 32, second folded edge; 4, first connecting row; 5, second connecting row; 6, transformer; 7, connecting wire; 8, connecting frame; 9, stainless steel plate; 91, arc part. Specific embodiments

[0030] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, and understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0036] As Figures 1-6 shown in the embodiments of the present invention, a catenary vulcanizing tube heating device includes: a vulcanizing tube 1, flanges 2 are provided at both the front and rear ends of the vulcanizing tube 1, an insulating gasket 21 is provided in the middle of the flange 2, and a plurality of copper bars 3 are respectively provided along the end faces of the flanges 2 at both the front and rear ends of the vulcanizing tube 1; a first connecting row 4 and a second connecting row 5 are provided on the outer periphery of the vulcanizing tube 1, and the plurality of copper bars 3 at the front end of the vulcanizing tube 1 are respectively connected to the first connecting row 4, and the plurality of copper bars 3 at the rear end of the vulcanizing tube 1 are respectively connected to the second connecting row 5; a transformer 6, connecting wires 7 are respectively provided at the input end and the output end of the low-voltage end of the transformer 6, and the input end and the output end of the low-voltage end of the transformer 6 are respectively connected to the first connecting row 4 and the second connecting row 5 through the connecting wires 7.

[0037] Specifically, the catenary vulcanizing tube heating device can effectively increase the heat receiving area of the flange 2 by providing a plurality of copper bars 3 on the end faces of the flanges 2 at both the front and rear ends of the vulcanizing tube 1, and prevent local overheating of the flange 2 during the heating process of the vulcanizing tube 1 due to the small heat receiving area of the flange 2, resulting in overheating and carbonization of the insulating gasket 21 inside the flange 2 and causing gas leakage at the flange 2, effectively avoiding shutdown for maintenance, thereby affecting the work continuity, ensuring the insulation performance and effect of the insulating gasket 21, and enabling the adjacent two sections of the vulcanizing tube 1 to be insulated and isolate heat; and each section of the vulcanizing tube 1 is provided with such a heating device, which can heat each section of the vulcanizing tube 1 separately, realizing precise control of the temperature of each section of the vulcanizing tube 1 in the catenary, thereby meeting the production requirements and improving the production stability and efficiency.

[0038] As Figure 4 shown, the plurality of copper bars 3 are all L-shaped, including a first folded edge 31 and a second folded edge 32, and the first folded edge 31 is connected to the end face of the flange 2.

[0039] Specifically, since several copper bars 3 are all L-shaped, including a first folded edge 31 and a second folded edge 32, the first folded edge 31 of the copper bar 3 is connected to the end face of the flange 2, so that the first folded edge 31 of the L-shaped copper bar 3 can be in close contact with the end face of the flange 2, effectively increasing the heat conduction area of the flange 2, improving the heat conduction efficiency of the heat of the flange 2, avoiding the risk of local heating of the flange 2 due to its small heat receiving area, thereby reducing the risk of overheating carbonization of the inner insulating gasket 21 of the flange 2, improving the insulation effect and service life of the insulating gasket 21, ensuring that adjacent two vulcanizing pipes 1 maintain relatively independent temperature control, meeting the production temperature requirements of different vulcanizing pipes 1, and improving production quality and efficiency.

[0040] Furthermore, the second folded edges 32 of several copper bars 3 at the front end of the vulcanizing pipe 1 are respectively connected to the first connecting row 4, and the second folded edges 32 of several copper bars 3 at the rear end of the vulcanizing pipe 1 are respectively connected to the second connecting row 5.

[0041] Specifically, since the second folded edges 32 of several copper bars 3 at the front end of the vulcanizing pipe 1 are respectively connected to the first connecting row 4, and the second folded edges 32 of several copper bars 3 at the rear end of the vulcanizing pipe 1 are respectively connected to the second connecting row 5, the input end and output end currents of the low-voltage end of the transformer 6 are respectively connected to both ends of the vulcanizing pipe 1 through the connecting wire 7. By adopting the heating method of short-circuit current, the input end and output end currents of the low-voltage end of the transformer 6 are respectively transmitted to several copper bars 3 through the first connecting row 4 and the second connecting row 5, and then the currents are respectively transmitted to the flanges 2 at the front and rear ends of the vulcanizing pipe 1 through several copper bars 3, and finally the currents are transmitted to the vulcanizing pipe 1 through the flanges 2, so that resistances are generated at both ends of the vulcanizing pipe 1 to realize the heating of the vulcanizing pipe 1; at the same time, after the flange 2 is heated, the heat is transmitted to several copper bars 3, effectively increasing the heat receiving area of the flange 2 and ensuring that the flange 2 will not be locally heated to cause overheating carbonization of the insulating gasket 21.

[0042] Furthermore, a connecting frame 8 is arranged between the second folded edge 32 of several copper bars 3 at the rear end of the vulcanizing pipe 1 and the second connecting row 5.

[0043] Specifically, since the vulcanizing pipe 1 is relatively long, if the second folded edge 32 of several copper bars 3 at the rear end of the vulcanizing pipe 1 is directly connected to the second connecting row 5, it will cause the connecting wire 7 to be used too long, affecting the on-site production and aesthetics. By arranging a connecting frame 8 between the second folded edge 32 of several copper bars 3 at the rear end of the vulcanizing pipe 1 and the second connecting row 4, it can effectively avoid the connecting wire 7 from being used too long, prevent the risk of safety accidents in production, and effectively improve the safety and cleanliness of production.

[0044] As Figures 4-6 shown, stainless steel plates 9 are respectively arranged on the first folded edges 31 of several copper bars 3, and one end of the stainless steel plate 9 is connected to the arc edge of the flange 2; an arc part 91 is arranged at one end of the stainless steel plate 9, and the arc part 91 is adapted to the arc edge of the flange 2.

[0045] Specifically, since stainless steel plates 9 are respectively arranged on the first folded edges 31 of several copper bars 3, one end of the stainless steel plate 9 is connected to the arc edge of the flange 2, and an arc portion 91 is arranged at one end of the stainless steel plate 9. The arc portion 91 is adapted to the arc edge of the flange 2, so that the stainless steel plate 9 increases the surface area of its contact with the arc edge of the flange 2, further increases the heat transfer efficiency and the heat receiving area of the flange 2, improves the overall heat uniformity of the flange 2, enables better transfer of the heat on the flange 2, avoids overheating and carbonization of the insulating gasket 21 caused by local overheating of the flange 2, and further improves the insulating effect and service life of the insulating gasket 21, thereby ensuring the production stability and efficiency of the catenary vulcanizing pipe.

[0046] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all fall within the protection scope of the present invention.

Claims

1. A catenary vulcanization tube heating device, characterized in that: include: A vulcanizing tube (1), wherein flanges (2) are provided at both the front and rear ends of the vulcanizing tube (1), an insulating sealing gasket (21) is provided in the middle of the flange (2), and a plurality of copper bars (3) are provided along the end surfaces of the flanges (2) at the front and rear ends of the vulcanizing tube (1); The outer periphery of the vulcanized tube (1) is provided with a first connecting row (4) and a second connecting row (5); a plurality of copper bars (3) at the front end of the vulcanized tube (1) are respectively connected to the first connecting row (4); and a plurality of copper bars (3) at the rear end of the vulcanized tube (1) are respectively connected to the second connecting row (5); A transformer (6), wherein the input end and the output end of the low-voltage end of the transformer (6) are respectively provided with connecting wires (7), and the input end and the output end of the low-voltage end of the transformer (6) are respectively connected to the first connecting bar (4) and the second connecting bar (5) through the connecting wires (7).

2. The catenary vulcanization tube heating device according to claim 1, characterized in that: The copper bars (3) are all L-shaped, and include a first folded edge (31) and a second folded edge (32); the first folded edge (31) is connected to the end surface of the flange (2).

3. The catenary vulcanization tube heating device according to claim 2, characterized in that: The second folded edges (32) of the plurality of copper bars (3) at the front end of the vulcanized tube (1) are respectively connected to the first connecting bar (4), and the second folded edges (32) of the plurality of copper bars (3) at the rear end of the vulcanized tube (1) are respectively connected to the second connecting bar (5).

4. The catenary vulcanization tube heating device according to claim 3, characterized in that: A connecting frame (8) is provided between the second folded edges (32) of the plurality of copper bars (3) at the rear end of the vulcanizing tube (1) and the second connecting bar (5).

5. The catenary vulcanization tube heating device according to claim 2, characterized in that: The first folded edges (31) of the plurality of copper bars (3) are respectively provided with a stainless steel plate (9), and one end of the stainless steel plate (9) is connected to the arc edge of the flange (2).

6. The catenary vulcanization tube heating device according to claim 5, characterized in that: An arc portion (91) is provided at one end of the stainless steel plate (9), and the arc portion (91) is matched with the arc edge of the flange (2).

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