A pressurized inflatable vapor crosslinking cable drum

Abstract

The utility model belongs to the field of cable reel, provide a kind of pressurized inflatable steam crosslinking cable reel, including breather pipe, cylinder, sealing baffle and pressure regulating valve, the air inlet and the gas outlet that are interconnected are formed in breather pipe, the steam in steam room can flow to the gas outlet via air inlet;Cylinder is sleeved on breather pipe, and there are several drainage channels in the radial direction of cylinder equidistant distribution.Compared with prior art, the utility model has the advantages that the cooperation of air inlet and drainage channel makes steam be able to be evenly distributed to the insulated wire core wound on the outer wall of cylinder, realizes the efficient crosslinking of wire core, cooperates sealing baffle to prevent steam from leaking out, ensures the airtightness of crosslinking environment, simultaneously, the pressure regulating valve added helps to increase internal steam pressure and improve crosslinking uniformity and efficiency, therefore, the structure realizes the crosslinking mode of steam from internal pressurization blowing into wire core, solves the problem of long traditional external heating crosslinking time, temperature is uneven.

Description

Technical Field

[0001] This utility model belongs to the field of cable reels, specifically relating to a pressurized, blown-air-crosslinkable cable reel. Background Technology

[0002] In the production process of wires and cables, insulation materials such as cross-linked polyethylene (XLPE) are usually cured by silane cross-linking or steam cross-linking. The commonly used method is to send the cable reel with the insulated core wound into the steam cross-linking chamber, and use the high temperature water vapor generated by the steam generator to fill the entire cross-linking chamber, so that the core can complete the cross-linking reaction in a high temperature and high humidity environment.

[0003] However, existing technologies have significant drawbacks: because traditional cable reels are solid structures or have only a few ventilation holes, steam mainly penetrates from the outside in, making it difficult for the inner cores of the reel to fully contact the steam, resulting in insufficient and uneven cross-linking. To ensure that the thermal elongation performance meets the standards, it is necessary to extend the cross-linking time and increase the cross-linking temperature, which not only increases energy consumption and reduces production efficiency, but may also lead to oxidation of the copper conductor, affecting product quality. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a pressurized, blown steam cross-linking cable reel that features a simple structure, good stability, high overall efficiency, and the ability to simultaneously cross-link steam internally and externally.

[0005] The objective of this utility model can be achieved by addressing the following technical problem: a pressurized, blown-air-steam cross-linked cable reel is provided, comprising a vent pipe, a cylinder, a sealing baffle, and a pressure regulating valve, wherein:

[0006] The ventilation pipe has an interconnected air inlet and an air outlet, through which steam in the steam room can flow to the air outlet.

[0007] The cylinder is sleeved on the vent pipe, and a number of drainage channels are equidistantly distributed in the radial direction of the cylinder. The drainage channels are connected to the vent to guide the steam into the insulating wire core wound on the outer wall of the cylinder.

[0008] The sealing baffle is installed on the vent pipe and is tightly attached to both ends of the cylinder. The steam can be conducted along the gap between the insulated wire core and the sealing baffle.

[0009] The pressure regulating valve is installed on the outer wall of the sealing baffle and is used to regulate the pressure value of steam entering the cylinder.

[0010] In the aforementioned pressurized, blowable steam crosslinking cable reel, the sealing baffle includes a reel side plate and a cover plate. The reel side plate is attached to both ends of the cylinder and forms a crosslinking cavity with the cylinder. The insulated wire core is wound around the outer wall of the cylinder and placed inside the crosslinking cavity. The cover plate abuts against the outer wall of the reel to prevent the steam from escaping along the gap between the reel side plate and the cover plate.

[0011] In the aforementioned pressurized, blowable steam cross-linked cable reel, the end of the vent pipe is also connected to a steam pipe joint.

[0012] In the above-mentioned pressurized, blowable steam cross-linked cable reel, a number of conductive holes are evenly distributed in a ring on the side plate of the reel. One end of each conductive hole is pressed against the cover plate, and the other end is connected to the cross-linking cavity.

[0013] In the aforementioned pressurized, blowable steam cross-linked cable reel, the air inlet is arranged along the axial direction of the vent pipe, and a plurality of air outlets are equidistantly distributed in the radial direction of the vent pipe.

[0014] In the aforementioned pressurized, blown-air cross-linked cable reel, the reel's side plate and the cover plate are either detachably connected or integrally formed.

[0015] In the aforementioned pressurized, blowable steam cross-linked cable reel, the pressure regulating valve and the steam pipe joint are detachably connected.

[0016] In the aforementioned pressurized, blown-air cross-linked cable reel, a sealing ring is also formed between the reel's side plate and the cover plate.

[0017] In the aforementioned pressurized, blowable steam crosslinked cable reel, the pressure regulating valve and the air inlet are symmetrically arranged at both ends of the vent pipe.

[0018] In the aforementioned pressurized, blowable steam cross-linked cable reel, the inner diameter of the drainage channel is larger than the inner diameter of the air outlet.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention provides a pressurized steam crosslinking cable reel that utilizes the combination of an air inlet and a drainage channel to enable steam to be evenly distributed to the insulated wire core wound on the outer wall of the cylinder, thereby achieving efficient crosslinking of the wire core. The sealing baffle prevents steam leakage and ensures the airtightness of the crosslinking environment. At the same time, the added pressure regulating valve helps to increase the internal steam pressure and improve the uniformity and efficiency of crosslinking. Therefore, this structure realizes the crosslinking method of steam being pressurized from the inside and blown into the wire core, solving the problems of long crosslinking time and uneven temperature in traditional external heating.

[0021] (2) The sealing is achieved by the sealing baffles on the outside of the cylinder and the side plate of the tray, so that the high pressure gas is released from the drainage channel and then conducted along the gap between the insulated wire cores, thereby ensuring that the inner wire cores can also fully contact the cross-linking vapor, so that the wire cores in the tray are more fully and uniformly cross-linked, so as to be put into the production of the next process as soon as possible to increase the output.

[0022] (3) Annularly distributed conduction holes are set on the side plate of the tray so that steam can be uniformly introduced into the insulated wire core in the cross-linking cavity from multiple directions, avoiding excessively high or low local steam concentration, significantly improving the uniformity of steam distribution around the insulated wire core, thereby ensuring the consistency and quality stability of the cross-linking reaction and reducing electrical performance defects caused by uneven cross-linking. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 yes Figure 1 A schematic diagram of the cross-section at point AA.

[0025] In the diagram, 1 is the vent pipe; 10 is the air inlet; 11 is the air outlet; 12 is the steam pipe joint; 2 is the cylinder; 20 is the drainage channel; 3 is the sealing baffle; 30 is the side plate of the tray; 300 is the cross-linking cavity; 301 is the conduction hole; 31 is the cover plate; and 4 is the pressure regulating valve. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] like Figures 1 to 2As shown, this utility model discloses a pressurized, blown steam crosslinking cable reel, which includes a vent pipe 1, a cylinder 2, a sealing baffle 3, and a pressure regulating valve 4.

[0029] The ventilation pipe 1 has an interconnected air inlet 10 and an air outlet 11, through which steam in the steam chamber can flow to the air outlet 11. The cylinder 2 is fitted onto the ventilation pipe 1, and several drainage channels 20 are equidistantly distributed in the radial direction of the cylinder 2. The drainage channels 20 are connected to the air outlet 11 to guide the steam to the insulated wire core wound on the outer wall of the cylinder 2. The sealing baffle 3 is installed on the ventilation pipe 1 and is tightly attached to both ends of the cylinder 2, allowing steam to be conducted along the gap between the insulated wire core and the sealing baffle 3. The pressure regulating valve 4 is installed on the outer wall of the sealing baffle 3 to regulate the pressure value of the steam entering the cylinder 2.

[0030] This embodiment aims to solve the problem of insufficient material crosslinking during steam crosslinking. While maintaining a constant temperature, it reduces the time required for crosslinking, resulting in more complete and uniform crosslinking of the wire cores in the reel. This allows for faster production into the next stage, increasing output and saving production costs. Specifically, the entire cable reel structure is placed inside a steam chamber. Upon starting the steam system, the crosslinking process of the cylinder 2, which is wrapped with insulated wire cores, can be divided into two simultaneous parts: First, steam is introduced into the steam chamber through pipes, filling it with high-temperature steam. Crosslinking is achieved through the reaction between the steam and the silane insulating material. Second, steam enters the inlet 10 of the vent pipe 1 via the pressure regulating valve 4, flows through the inside of the vent pipe 1, and enters the internal cavity of the cylinder 2 from the outlet 11. Because the cylinder 2 has multiple radially equidistant drainage channels 20 on its wall, high-pressure steam contacts the insulated wire cores from inside the cylinder 2, achieving crosslinking. Therefore, this embodiment utilizes the combination of the air inlet 10 and the drainage channel 20 to ensure that steam can be evenly distributed to the insulated wire core wound on the outer wall of the cylinder 2, thereby achieving efficient cross-linking of the wire core. The sealing baffle 3 prevents steam leakage and ensures the airtightness of the cross-linking environment. At the same time, the added pressure regulating valve 4 helps to increase the internal steam pressure, thereby improving the uniformity and efficiency of cross-linking. This realizes the cross-linking method of blowing steam into the wire core from the inside, solving the problems of long cross-linking time and uneven temperature in traditional external heating.

[0031] The sealing baffle 3 includes a tray side plate 30 and a cover plate 31. The tray side plate 30 is attached to both ends of the cylinder 2 and forms a cross-linked cavity 300 with the cylinder 2. The insulated wire core is wound around the outer wall of the cylinder 2 and placed in the cross-linked cavity 300. The cover plate 31 is pressed against the outer wall of the tray to prevent the steam from escaping along the gap between the tray side plate 30 and the cover plate 31.

[0032] like Figure 1 and Figure 2As shown, the sealing baffle 3 in this embodiment adopts a combination structure of a disc side plate 30 and a cover plate 31. The disc side plate 30 and the cylinder 2 form a semi-closed cross-linking cavity 300. Before cross-linking, the produced insulated wire core is wound around the outer wall of the cylinder 2 to form a neat coil layer, so that the insulated wire core is completely in a controlled steam environment. Furthermore, because the cover plate 31 further presses and seals the outer wall of the disc side plate 30, it effectively prevents high-temperature and high-pressure steam from flowing out of the disc side plate 30, ensuring the sealing and safety of the cross-linking process.

[0033] The side plate 30 of the disc has several conduction holes 301 distributed in an annular pattern at equal intervals. One end of the conduction hole 301 is pressed against the cover plate 31, and the other end is connected to the cross-linking cavity 300.

[0034] like Figure 1 As shown, since the insulated wire core wound on the cylinder 2 has a certain thickness, this embodiment provides annularly distributed conduction holes 301 on the side plate 30 of the reel. As high-pressure gas is released outward from the drainage channel 20 of the cylinder 2, it will be conducted along the gaps between the wire cores (and the gaps between the insulated wire cores and the side plate 30 of the reel), allowing steam to be uniformly introduced into the cross-linking cavity 300 from multiple directions. This avoids excessively high or low local steam concentrations, significantly improving the uniformity of steam distribution around the insulated wire core, thereby ensuring the consistency and quality stability of the cross-linking reaction and reducing electrical performance defects caused by uneven cross-linking. In other words, even if the number of wire cores wound is large, the inner wire cores can fully contact the cross-linking steam, effectively solving the problem of insufficient cross-linking and unqualified performance of the internal wire cores caused by the lack of external interference in the original cable reel. This makes the cross-linking of the wire cores in the reel more complete and uniform, and can be put into the production of the next process as soon as possible to increase output and save production costs.

[0035] Preferably, this embodiment also includes a steam pipe connector 12 at the end of the vent pipe 1. This steam pipe connector 12 can be connected to the pressure regulating valve 4, allowing steam to enter the cylinder 2. More preferably, in this embodiment, the pressure regulating valve 4 and the steam pipe connector 12 are detachably connected, facilitating the replacement of pressure valves or connectors of different specifications according to actual process requirements, adapting to crosslinking processes of various pressure levels. Simultaneously, this design facilitates equipment maintenance and troubleshooting, reduces maintenance costs, and improves the maintainability and adaptability of the system. Furthermore, after crosslinking is completed, this structure can also be connected to a blowing device for cooling, enhancing the automation level and integration capability of the production line.

[0036] The air inlet 10 is arranged along the axial direction of the vent pipe 1, and several air outlets 11 are equidistantly distributed in the radial direction of the vent pipe 1.

[0037] like Figure 2As shown, in this embodiment, the air inlet 10 is arranged along the axial direction of the vent pipe 1, which is conducive to the smooth flow of steam. Meanwhile, the multiple radially equidistant air outlets 11 can evenly guide the steam to each flow channel 20, forming a symmetrical and balanced air supply field, effectively avoiding airflow blockage, further improving the uniformity and response speed of steam delivery, and ensuring the efficient and stable crosslinking process.

[0038] Preferably, in this embodiment, the side plate 30 and the cover plate 31 of the tray are implemented in two ways: detachable connection (screws or bolts) or integral molding. This not only meets the assembly requirements under different working conditions (such as maintenance and replacement), but also allows for the use of an integral molding structure to enhance overall rigidity and sealing reliability when high-strength sealing is required. This design takes into account both structural flexibility and long-term stability, thus broadening the application scenarios of the equipment.

[0039] Preferably, in this embodiment, the pressure regulating valve 4 and the air inlet 10 are symmetrically arranged at both ends of the air pipe 1, so that steam can enter from both sides at the same time, forming a symmetrical air supply mode. With the pressure regulating valve 4 on both sides pressurizing the steam, the steam entry speed and distribution uniformity are greatly improved, the crosslinking time is effectively shortened, and the production efficiency is improved.

[0040] like Figure 2 As shown, in this embodiment, the inner diameter of the drainage channel 20 is larger than the inner diameter of the outlet 11. This can play a role in pressure diffusion and buffering when steam enters the drainage channel 20 from the outlet 11, thereby stabilizing the pressure and preventing high-speed airflow from causing impact damage to the insulated wire core. At the same time, it helps the steam to diffuse more evenly in the channel, improving the stability and consistency of crosslinking quality.

[0041] Preferably, in this embodiment, based on the detachable connection between the tray side plate 30 and the cover plate 31, a sealing ring is added between the tray side plate 30 and the cover plate 31. This sealing ring significantly improves the sealing performance at the connection point, preventing high-pressure steam from escaping along the gaps, reducing energy loss, and improving energy utilization efficiency. Simultaneously, the presence of the sealing ring can extend the service life of the equipment and reduce downtime caused by corrosion or leakage.

[0042] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A pressurized, blown-air-crosslinkable cable reel, characterized in that, Includes a vent pipe, cylinder, sealing baffle, and pressure regulating valve, wherein: The ventilation pipe has an interconnected air inlet and an air outlet, through which steam in the steam room can flow to the air outlet. The cylinder is sleeved on the vent pipe, and a number of drainage channels are equidistantly distributed in the radial direction of the cylinder. The drainage channels are connected to the vent to guide the steam into the insulating wire core wound on the outer wall of the cylinder. The sealing baffle is installed on the vent pipe and is tightly attached to both ends of the cylinder. The steam can be conducted along the gap between the insulated wire core and the sealing baffle. The pressure regulating valve is installed on the outer wall of the sealing baffle and is used to regulate the pressure value of steam entering the cylinder.

2. The pressurized, blown-air-crosslinkable cable reel according to claim 1, characterized in that, The sealing baffle includes a tray side plate and a cover plate. The tray side plate is attached to both ends of the cylinder and forms a cross-linked cavity with the cylinder. The insulated wire core is wound around the outer wall of the cylinder and placed in the cross-linked cavity. The cover plate is pressed against the outer wall of the tray to prevent the steam from escaping along the gap between the tray side plate and the cover plate.

3. The pressurized, blown-air-crosslinkable cable reel according to claim 1, characterized in that, The end of the vent pipe is also connected to a steam pipe joint.

4. A pressurized, blown-air-crosslinkable cable reel according to claim 2, characterized in that, The side plate of the disc has a number of conductive holes distributed in a ring at equal intervals. One end of each conductive hole is pressed against the cover plate, and the other end is connected to the cross-linking cavity.

5. A pressurized, blown-air-crosslinkable cable reel according to claim 2, characterized in that, The air inlet is arranged along the axial direction of the vent pipe, and a plurality of air outlets are equidistantly distributed in the radial direction of the vent pipe.

6. A pressurized, blown-air-crosslinkable cable reel according to claim 2 or 4, characterized in that, The side plate and the cover plate of the tray are detachably connected or are integrally formed.

7. A pressurized, blown-air-crosslinkable cable reel according to claim 3, characterized in that, The pressure regulating valve and the steam pipe joint are detachably connected.

8. A pressurized, blown-air-crosslinkable cable reel according to claim 4, characterized in that, A sealing ring is also formed between the side plate of the tray and the cover plate.

9. A pressurized, blown-air-crosslinkable cable reel according to claim 1, characterized in that, The pressure regulating valve and the air inlet are symmetrically arranged at both ends of the vent pipe.

10. A pressurized, blown-air-crosslinkable cable reel according to claim 1, characterized in that, The inner diameter of the drainage channel is larger than the inner diameter of the air outlet.

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