Steam crosslinking device for crosslinked cable
By introducing a moving tray, limiting groove, uniform fan, and multi-pipeline system into the steam cross-linking chamber, the problems of high labor intensity and safety hazards during the cross-linking of large-diameter cables were solved, and an efficient and safe steam cross-linking process was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2026-03-31
AI Technical Summary
Existing steam cross-linking chambers are labor-intensive and pose safety hazards when processing large-diameter cables, and the steam cross-linking process is time-consuming and inefficient.
A steam crosslinking device was designed, comprising a movable tray, a limiting groove, a positioning block, a uniform blower, a spray pipe, and a steam pipe. The movable tray facilitates the movement and fixation of the cable reel, the uniform blower ensures uniform steam distribution, and the spray pipe and steam pipe spray steam simultaneously from above and below, thereby improving the crosslinking efficiency.
It reduces the labor intensity of workers, protects worker safety, shortens cross-linking time, and improves cross-linking efficiency and effectiveness.
Smart Images
Figure CN224067465U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cable production technology, and specifically relates to a steam cross-linking device for cross-linked cables. Background Technology
[0002] Cross-linking refers to the transformation of polymer insulating materials from a linear molecular structure to a three-dimensional network structure, and from a thermoplastic material to a thermosetting insulating material, thereby improving the aging resistance, mechanical properties, and environmental resistance of the insulating material. Cable cross-linking chambers achieve cross-linking of medium and low voltage cables under the action of high-pressure steam, hence they are also called cable steam chambers or steam cross-linking chambers. Cross-linking performance achieved under high-temperature steam is better and safer than self-linking. Steam cross-linking chambers are mainly used for medium and low voltage cables. Equipped with a high-pressure steam generator, the steam pressure can be freely adjusted within the range of 1-7 kg, and the temperature can reach 170℃.
[0003] Currently, existing steam crosslinking chambers are quite labor-intensive when performing steam crosslinking on large-diameter cable reels (such as those with a diameter of 2.5 meters or more). The cable reel must first be hoisted to the entrance of the chamber, and then several workers must work together to push it inside. This is physically demanding, and the cable reel needs to be positioned inside the chamber to prevent it from rolling. After crosslinking is complete, it needs to be pushed out again, and because the heated cable reel is very hot, it can easily burn workers, posing a safety hazard. Furthermore, the steam pipes and spray pipes in the steam crosslinking chamber are mostly located at the top of the room. During use, steam slowly fills the entire room from top to bottom, and crosslinking only occurs when the steam comes into contact with the cable at the bottom of the room, thus increasing the crosslinking time.
[0004] Therefore, improvements are urgently needed. Utility Model Content
[0005] To address the aforementioned deficiencies in existing technologies, this utility model provides a steam crosslinking device for crosslinked cables, comprising a steam crosslinking chamber. A fan and spray pipes are installed on the top of the steam crosslinking chamber. A movable tray is placed on the floor inside the steam crosslinking chamber. Two limiting grooves for placing cable reels are provided at the front and rear ends of the top of the movable tray. The limiting grooves are concave structures, lower in the middle and higher at the front and rear ends. Several positioning hole groups and several positioning blocks are provided in the limiting grooves. Each positioning hole group includes two positioning holes arranged horizontally. The positioning holes are through holes penetrating the movable tray vertically. This facilitates drainage; the positioning block includes a semi-cylindrical plate, which is long and narrow, with a convex top and a flat bottom. Two protruding pillars are fixedly connected to the bottom of the semi-cylindrical plate, and the two protruding pillars are respectively matched with two positioning holes in the positioning hole group; the bottom of the movable tray is equipped with movable wheels, and a track is slidably connected below the movable wheels. The track extends from inside the room to the outside and is set below the ground; steam pipes are laid at the bottom of the steam crosslinking room, and several air guide pipes are vertically connected above the steam pipes, with multiple air outlets installed on the air guide pipes.
[0006] Optionally, the uniform fan includes a rotating shaft, several fan blades, and a drive motor. The rotating shaft passes through the top wall of the steam crosslinking chamber, and the rotating shaft and the top wall are rotatably and sealed together. Several fan blades are evenly installed at the bottom of the rotating shaft. The drive motor is fixedly installed outside the steam crosslinking chamber, and the output shaft of the drive motor is connected to the top of the rotating shaft.
[0007] Specifically, the fan is used to even out the steam in the room.
[0008] Optionally, the spray pipes are laid along the top wall of the steam crosslinking chamber, and multiple spray heads are installed at the bottom of the spray pipes.
[0009] Specifically, the spray pipe is used to spray steam onto the cable from above, increasing the spray area and improving the cross-linking effect.
[0010] Optionally, the front end of the steam crosslinking chamber is provided with a door, and the door is provided with an observation window and a door handle.
[0011] Specifically, the observation window allows staff to view the situation inside the room.
[0012] Optionally, an exhaust port is provided on the rear wall of the steam crosslinking chamber, an electric louver is provided at the exhaust port, and an exhaust fan is provided outside the exhaust port.
[0013] Specifically, exhaust fans facilitate the exhaust of air.
[0014] Optionally, the floor of the steam crosslinking chamber is equipped with a drain outlet.
[0015] Specifically, the drain outlet facilitates drainage.
[0016] Optionally, a steam generating mechanism is provided on the rear side of the steam crosslinking chamber. The steam generating mechanism includes a steam jet pump and a steam generator. The first port of the steam jet pump is connected to the steam outlet of the steam generator. The second port of the steam jet pump is connected to the air outlet of the exhaust fan through a first air supply pipe. The third port of the steam jet pump is connected to the spray pipe and the steam pipe through a second air supply pipe. The water inlet of the steam generator is connected to the drain outlet of the steam crosslinking chamber through a return water pipe. A filter and a return water pump are provided on the return water pipe.
[0017] Specifically, a steam jet pump mixes high-pressure steam generated by a steam generator with recovered low-pressure steam. The high-pressure steam expands while compressing the low-pressure steam, and the excess pressure of the high-pressure steam is used to improve the quality of the low-pressure steam. Once the required steam pressure is reached, the steam is supplied to the steam cross-linking chamber, thereby improving heat utilization and saving energy. At the same time, the wastewater generated is recycled, purified, and reused to generate high-pressure steam, which is then fed back to the steam cross-linking chamber, improving water utilization and saving water resources.
[0018] This invention also includes other components that enable the steam crosslinking device for crosslinked cables to function properly, all of which are conventional techniques in the art. Furthermore, any devices or components not specified in this invention employ conventional techniques in the art, such as drive motors, steam jet pumps, steam generators, and return water pumps.
[0019] The working principle of this utility model is as follows: First, the movable tray is pulled out of the steam cross-linking chamber. Then, the cable reel is hoisted into the limiting groove on the movable tray. According to the diameter of the cable reel, the corresponding positioning blocks are installed and used to hold the bottom of the cable reel in place. The movable tray is then pushed back into the chamber, the door is closed, and the steam generator is started to supply steam to the spray pipes and steam pipes. One portion of the steam is sprayed out through the spray heads, contacting the cable from top to bottom and gradually filling the entire chamber. Another portion of the steam is sprayed out through the air outlet, contacting the side of the cable and filling the entire chamber from bottom to top. The room is divided into sections, allowing steam sprayed from the top and sides of the cable to quickly contact the cable and fully adhere to its surface, increasing the contact area. A fan is then activated to evenly distribute the steam, ensuring uniform steam distribution and improving the cross-linking effect. After a period of use, the electric blinds and exhaust fan are opened to expel the gas from the room. Wastewater flows out through the drain, is filtered and purified, and then enters the steam generator, where it is converted back into steam and supplied to the steam cross-linking room. Once cross-linking is complete, the room door is opened, the tray is secured with ropes, and the tray is pulled out of the room to remove the cable reel.
[0020] The beneficial effects of this invention are as follows: The movable tray facilitates workers' movement of large-diameter cable reels into the steam cross-linking chamber, greatly saving their physical labor; the positioning block easily secures the cable reel, preventing it from rolling; after cross-linking is complete, the cable reel can be moved out of the chamber simply by pulling the movable tray, eliminating the need for workers to directly contact the high-temperature cable reel and protecting their safety. Through the spray pipes, steam pipes, steam generator, and steam jet pump, steam can be emitted simultaneously from above and below, allowing the steam to quickly contact the cable and increasing the contact area, significantly shortening the cross-linking time; the fan evenly distributes the steam, ensuring uniform steam distribution within the chamber and improving the cross-linking effect. Attached Figure Description
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0023] Figure 2 This is a schematic diagram of the structure of the movable tray and steam pipe of this utility model.
[0024] Figure 3 This is a schematic diagram of the positioning block of this utility model.
[0025] Figure 4 This is a schematic diagram of the steam generating mechanism of this utility model.
[0026] In the diagram: 1. Steam crosslinking chamber, 2. Chamber door, 3. Uniform fan, 4. Spray pipe, 5. Moving tray, 6. Limiting groove, 7. Positioning hole group, 8. Positioning block, 9. Semi-cylindrical plate, 10. Protruding column, 11. Moving wheel, 12. Track, 13. Steam pipe, 14. Air guide pipe, 15. Air outlet, 16. Exhaust port, 17. Steam jet pump, 18. Steam generator, 19. First air supply pipe, 20. Exhaust fan, 21. Second air supply pipe, 22. Return water pipe, 23. Filter, 24. Return water pump. Detailed Implementation
[0027] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.
[0028] Example
[0029] like Figure 1-4As shown in the figure, this utility model embodiment provides a steam crosslinking device for crosslinked cables, including a steam crosslinking chamber 1. The front end of the steam crosslinking chamber 1 is provided with a door 2. The door 2 is provided with an observation window and a door handle. The observation window allows staff to easily observe the situation inside the chamber.
[0030] The top of the steam crosslinking chamber 1 is equipped with a uniform blower 3 and a spray pipe 4. The uniform blower 3 includes a rotating shaft, several fan blades, and a drive motor. The rotating shaft passes through the top wall of the steam crosslinking chamber 1, and the rotating shaft and the top wall are rotatably and sealed. Several fan blades are evenly installed at the bottom of the rotating shaft. The drive motor is fixedly installed outside the steam crosslinking chamber 1, and the output shaft of the drive motor is connected to the top of the rotating shaft. The uniform blower 3 is used to blow the steam in the chamber evenly. The spray pipe 4 is laid along the top wall of the steam crosslinking chamber 1. Multiple spray heads are installed at the bottom of the spray pipe 4. The spray pipe 4 is used to spray steam onto the cable from above, increasing the spray area and improving the crosslinking effect.
[0031] A movable tray 5 is installed on the floor inside the steam crosslinking chamber 1. Two limiting grooves 6 for placing cable reels are located at the front and rear ends of the top of the movable tray 5. The limiting grooves 6 are concave structures, lower in the middle and higher at both ends. Several positioning hole groups 7 and several positioning blocks 8 are provided within the limiting grooves 6. Each positioning hole group 7 includes two positioning holes arranged horizontally. The positioning holes are through holes that penetrate the movable tray 5 vertically, facilitating drainage. The positioning block 8 includes a semi-cylindrical plate 9, which is elongated and has a convex top. The bottom is flat, and two protruding pillars 10 are fixedly connected to the bottom of the semi-cylindrical plate 9. The two protruding pillars 10 are respectively adapted to the two positioning holes in the positioning hole group 7. The bottom of the movable tray 5 is provided with movable wheels 11, and a track 12 is slidably connected below the movable wheels 11. The track 12 extends from the inside of the room to the outside. In order not to affect the closing of the door, the track 12 is set below the ground. The bottom of the steam crosslinking room 1 is provided with steam pipes 13, and several air guide pipes 14 are vertically connected above the steam pipes 13. Multiple air outlets 15 are provided on the air guide pipes 14.
[0032] An exhaust vent 16 is provided on the rear wall of the steam crosslinking chamber 1. An electric louver is installed at the exhaust vent 16, and an exhaust fan 20 is installed outside the exhaust vent 16 to facilitate exhaust. A drain outlet is provided on the floor inside the steam crosslinking chamber 1 to facilitate drainage.
[0033] In addition, a steam generating mechanism is provided on the rear side of the exterior of the steam crosslinking chamber 1. The steam generating mechanism includes a steam jet pump 17 and a steam generator 18. The first port of the steam jet pump 17 is connected to the steam outlet of the steam generator 18. The second port of the steam jet pump 17 is connected to the air outlet of the exhaust fan 20 through the first air supply pipe 19. The third port of the steam jet pump 17 is connected to the spray pipe 4 and the steam pipe 13 through the second air supply pipe 21. The water inlet of the steam generator 18 is connected to the drain outlet of the steam crosslinking chamber 1 through the return water pipe 22. A filter 23 and a return water pump 24 are provided on the return water pipe 22.
[0034] Understandably, the high-pressure steam generated by the steam generator 18 is mixed with the recovered low-pressure steam by the steam jet pump 17. The high-pressure steam expands while compressing the low-pressure steam, and the excess pressure of the high-pressure steam is used to improve the quality of the low-pressure steam. Once the required steam pressure is reached, it is supplied to the steam crosslinking chamber 1 to improve the heat utilization rate and achieve the purpose of saving energy. At the same time, the generated wastewater is recycled, purified and reused to generate high-pressure steam and then fed back to the steam crosslinking chamber 1 to improve the water utilization rate and achieve the purpose of saving water resources.
[0035] The working principle of this utility model is as follows: First, the movable tray 5 is pulled out of the steam crosslinking chamber 1. Then, the cable reel is hoisted into the limiting groove 6 on the movable tray 5. According to the diameter of the cable reel, the corresponding positioning block 8 is installed. The positioning block 8 is used to hold the bottom of the cable reel in place. Then, the movable tray 5 is pushed back into the chamber, the chamber door 2 is closed, and the steam generator 18 is started to supply steam to the spray pipe 4 and the steam pipe 13. One part of the steam is sprayed out through the spray head, contacting the cable from top to bottom and gradually filling the entire chamber. Another part of the steam is sprayed out through the air outlet duct 15, contacting the side of the cable from bottom to top. The steam fills the entire room, allowing the steam sprayed from the top and sides of the cable to quickly contact the cable and fully contact its surface, increasing the contact area. Then, the fan 3 is activated to evenly distribute the steam, ensuring uniform steam distribution within the room and improving the cross-linking effect. After a period of use, the electric louvered blinds and exhaust fan 20 are opened to expel the gas from the room, while the wastewater flows out through the drain outlet. After filtration and purification, the wastewater enters the steam generator 18 and is converted back into steam to supply the steam cross-linking chamber 1. After the cross-linking is completed, the chamber door 2 is opened, and the movable tray 5 is secured with a rope. The movable tray 5 is then pulled out of the room, and the cable reel is removed.
[0036] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A steam crosslinking device for crosslinked cable, comprising a steam crosslinking room, characterized by: The top of the steam crosslinking room is provided with an air uniformizing fan and a spray pipeline, the ground in the steam crosslinking room is provided with a movable tray, the front and rear ends of the top of the movable tray are provided with two limiting grooves for placing cable reels, a plurality of positioning hole groups and a plurality of positioning blocks are arranged in the limiting grooves, each positioning hole group comprises two positioning holes arranged left and right, the positioning holes are through holes penetrating the movable tray from top to bottom, the positioning block comprises a semicylindrical plate, the semicylindrical plate is in the shape of a long strip as a whole, the top of the semicylindrical plate is a convex surface, the bottom of the semicylindrical plate is a flat surface, the bottom of the semicylindrical plate is fixedly connected with two convex columns, the two convex columns are matched with the two positioning holes in the positioning hole group respectively, the bottom of the movable tray is provided with movable wheels, the movable wheels are slidably connected with a track below, the track extends from inside the room to outside, and the track is arranged below the ground; the bottom of the steam crosslinking room is paved with a steam pipeline, a plurality of air guide pipes are vertically connected above the steam pipeline, and a plurality of air outlet tubes are arranged on the air guide pipes.
2. The steam crosslinking apparatus for a crosslinked cable according to claim 1, characterized by: The air uniformizing fan comprises a rotating shaft, a plurality of fan blades and a driving motor, the rotating shaft penetrates the top wall of the steam crosslinking room and is rotatably and sealingly connected with the top wall, the plurality of fan blades are uniformly arranged at the bottom end of the rotating shaft, and the driving motor is fixedly arranged outside the steam crosslinking room, the output shaft of the driving motor is in transmission connection with the top end of the rotating shaft.
3. The steam crosslinking apparatus for a crosslinked cable according to claim 2, characterized by: The spray pipeline is paved along the top wall of the steam crosslinking room, and a plurality of spray heads are arranged on the bottom of the spray pipeline.
4. The steam crosslinking apparatus for a crosslinked cable according to claim 3, characterized by: The front end of the steam crosslinking room is provided with a door, and the door is provided with an observation window and a door handle.
5. The steam crosslinking apparatus for a crosslinked cable according to claim 4, characterized by: The rear side wall of the steam crosslinking room is provided with an exhaust port, the exhaust port is provided with a louver, and the outside of the exhaust port is provided with an exhaust fan.
6. The steam crosslinking apparatus for crosslinked cables according to claim 5, characterized in that: The ground in the steam crosslinking room is provided with a drain.
7. The steam crosslinking apparatus for crosslinked cables according to claim 6, characterized in that: The rear side of the outside of the steam crosslinking room is provided with a steam generating mechanism, the steam generating mechanism comprises a steam jet pump and a steam generator, the first port of the steam jet pump is connected with the steam outlet of the steam generator, the second port of the steam jet pump is connected with the air outlet end of the exhaust fan through a first gas pipeline, the third port of the steam jet pump is connected with the spray pipeline and the steam pipeline through a second gas pipeline respectively, the water inlet of the steam generator is connected with the drain of the steam crosslinking room through a backwater pipeline, and a filter and a backwater pump are arranged on the backwater pipeline.