A cable core drying device

Abstract

This utility model relates to the field of cable rubber insulation and rubber sheath production technology, and particularly to a cable core drying device. The technical solution is as follows: a base is located at the bottom of the drying tank; a heat transfer oil pipe is located inside the drying tank and connected to an external heat transfer oil heating system; a vacuum pipe is located at the top of the drying tank and connected to a vacuum system; a temperature sensor is installed at the top of the drying tank and connected to a heat transfer oil temperature control system; a track is installed at the bottom of the inner wall of the drying tank; a support frame is installed at the bottom of the sealing door; and one side of the sealing door is connected to the drying tank via a door hinge and a bushing. The beneficial effects are: the heat transfer oil heating system heats and evaporates the moisture contained in the cable core into water vapor, which is then discharged through the vacuum system, improving drying efficiency, reducing safety hazards, and is also suitable for drying entire reels of cable cores, thereby improving the electrical performance of the cable cores and enhancing product quality.

Description

Technical Field

[0001] This utility model relates to the field of cable rubber insulation and rubber sheath production technology, and in particular to a cable core drying device. Background Technology

[0002] In the field of cable manufacturing technology, especially in the production of rubber insulation and rubber sheath, due to the different insulation and sheath materials used in cables, vulcanization is generally carried out using saturated steam during the production process. Due to factors such as saturated steam pressure and production speed, the cable core contains a certain amount of moisture, which leads to a decline in the electrical performance of the cable core, especially the insulation resistance, withstand voltage, and leakage current. This results in unstable cable quality, which in turn leads to a decline in cable product quality and causes certain economic losses.

[0003] Chinese patent number CN201810035033.8, patent name "Cable Core Drying Box", its technical solution is as follows: including an inner box and an outer box, with a cavity formed between the inner box and the outer box; the inner box is provided with multiple winding posts for winding the core to be dried, and the core is wound on the winding posts from top to bottom along a wavy path; multiple end faces of the inner box are open or have multiple through holes, the top face of the outer box is provided with multiple air outlets, and the bottom face is provided with at least two blowers arranged side by side; heating wires are provided on one or both sides of the cavity, and the blowing direction of the blowers is vertically upward so that the heat generated by heating the heating wires forms hot air that is blown from top to bottom from inside the inner box to outside the outer box. The problems with this system are: the wire cores need to be wound on the winding post, which is only suitable for drying a small number of wire cores and cannot be used for drying a whole reel of cable cores; in addition, after heating, the hot air is blown out by a blower and quickly discharged through the air outlet at the top, resulting in a large amount of heat loss, which can only be achieved by increasing the heating power, resulting in a significant increase in energy consumption; moreover, the use of heating wire poses a safety hazard.

[0004] Chinese patent number CN202020011825.4, entitled "A High-Efficiency Double-Sided Continuous Drying Device for Cable Cores," describes a device comprising: a housing, a motor, a control panel, a door, casters, a drive shaft, an infrared moisture detector, a slide rail, a heating plate, a tray, a fixing column, a temperature sensor, a controller, a relay, a switch, and a display. The motor is located at the top of the housing. A control panel is positioned above the front surface of the housing, with a display fixedly connected above the front surface of the control panel. A controller is fixedly connected to the left side below the display, and a relay is fixedly connected to the right side of the controller. A switch is fixedly connected to the right side of the relay. A door is located on the front surface of the housing, and casters are located at the bottom. A drive shaft is located at the top of the housing, with infrared moisture detectors fixedly connected to both sides of the top of the drive shaft. A temperature sensor is fixedly connected to the left side of each infrared moisture detector. The problem with this device is that the internal heating plate turns moisture into steam, which cannot be released in time, resulting in poor drying and prolonged heating time. Furthermore, it is not suitable for drying entire reels of cable cores due to its low drying efficiency. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned deficiencies in the existing technology by providing a cable core drying device. This device uses a heat-conducting oil heating system to heat and evaporate the moisture in the cable core into water vapor, and then uses a vacuum system to remove the water vapor. This improves drying efficiency, reduces safety hazards, and is also suitable for drying entire reels of cable cores, thereby improving the electrical performance of the cable cores and enhancing product quality.

[0006] The present invention discloses a cable core drying device, the technical solution of which includes a drying tank, a base, a track, a heat transfer oil pipe, a vacuum pipe, a temperature sensor, a door hinge, a bushing, a sealing door, and a support frame. The base is located at the lower part of the drying tank, the heat transfer oil pipe is located inside the drying tank and connected to an external heat transfer oil heating system, the vacuum pipe is located at the upper part of the drying tank and connected to an external vacuum system, the temperature sensor is installed at the top of the drying tank and connected to an external heat transfer oil temperature control system, the track is installed at the bottom of the inner wall of the drying tank, the support frame is installed at the lower part of the sealing door, and one side of the middle of the sealing door is connected to the drying tank through a door hinge and a bushing.

[0007] Preferably, the aforementioned heat-conducting oil pipes are installed in the lower middle position of the inner wall of the drying tank and are arranged in a "U" shape.

[0008] Preferably, the aforementioned drying tank is a cylindrical hollow tank with a wall thickness of not less than 10mm and made of stainless steel. The bottom of the outer wall is placed on a base, and two axially arranged rails are installed at the bottom of the inner wall. One side is sealed with a head, and the other side is connected to a sealing door.

[0009] Preferably, the outer end of the aforementioned vacuum tube is connected to the vacuum system via an external pipeline of the vacuum system, and a vacuum solenoid valve and a vacuum pressure gauge are installed on the external pipeline of the vacuum system.

[0010] Preferably, the outer end of the aforementioned heat transfer oil pipe is connected to the heat transfer oil heating system through an external heat transfer oil pipeline and a valve on the external heat transfer oil pipeline, and the heat transfer oil temperature control system is located on one side of the heat transfer oil heating system.

[0011] Preferably, the vacuum tube is a seamless galvanized tube with a diameter of 25mm, and the heat transfer oil tube is a seamless stainless steel tube with a diameter of 40mm.

[0012] Preferably, the temperature sensor is of type K, and the sealing door is a steel plate with a thickness of 20mm.

[0013] The beneficial effects of this utility model are as follows: By installing the heat transfer oil pipe in the lower middle position of the inner wall of the drying tank and arranging it in a "U" shape, and then controlling the heat transfer oil to heat the inner cavity of the drying tank, the moisture contained in the cable core is heated into water vapor. Since heat transfer oil is used for heating, safety hazards are effectively eliminated. In addition, the cable core is directly delivered to the track inside the drying tank by a flatbed trailer, which facilitates the drying of the entire cable core and makes the operation convenient and labor-saving.

[0014] In addition, the vacuum system quickly removes the water vapor generated by heating, improving drying efficiency. It is suitable for drying entire reels of cable cores, enhancing the electrical performance of the cable cores and thus improving product quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a side view of the present invention;

[0017] Figure 3 This is a schematic diagram of the cable reel incorporated into this utility model;

[0018] In the diagram: 1. Base; 2. Track; 3. Drying tank; 4. Heat transfer oil pipe; 5. Vacuum pipe; 6. Temperature sensor; 7. Door hinge; 8. Bushing; 9. Sealing door; 10. Support frame; 11. Heat transfer oil heating system; 12. External heat transfer oil pipeline; 13. External heat transfer oil pipeline valve; 14. Vacuum system; 15. External vacuum system pipeline; 16. Vacuum solenoid valve; 17. Vacuum pressure gauge; 18. Heat transfer oil temperature control system; 21. Pulley; 22. Flatbed trailer; 23. Fixed baffle; 24. Cable reel. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] Example 1, referring to Figures 1-3 The present invention discloses a cable core drying device, comprising a drying tank 3, a base 1, a track 2, a heat transfer oil pipe 4, a vacuum pipe 5, a temperature sensor 6, a door hinge 7, a bushing 8, a sealing door 9, and a support frame 10. The base 1 is located at the lower part of the drying tank 3 and serves to support and fix it. The heat transfer oil pipe 4 is located inside the drying tank 3 and is connected to an external heat transfer oil heating system 11. The vacuum pipe 5 is located at the upper part inside the drying tank 3 and is connected to an external vacuum system 14. The temperature sensor 6 is installed at the top of the drying tank 3 and is connected to an external heat transfer oil temperature control system 18. The track 2 is installed at the bottom of the inner wall of the drying tank 3. The support frame 10 is installed at the lower part of the sealing door 9, and one side of the middle part of the sealing door 9 is connected to the drying tank 3 through the door hinge 7 and the bushing 8.

[0021] Among them, the aforementioned heat-conducting oil pipe 4 is installed in the lower middle position of the inner wall of the drying tank 3 and is arranged in a "U" shape, which has a better heating effect.

[0022] The aforementioned drying tank 3 is a cylindrical hollow tank with a wall thickness of not less than 10mm and made of stainless steel. The bottom of the outer wall is placed on the base 1, and two axially arranged rails 2 are installed at the bottom of the inner wall. One side is sealed with a head, and the other side is connected to a sealing door 9.

[0023] The outer end of the aforementioned vacuum tube 5 is connected to the vacuum system 14 through the external pipeline 15 of the vacuum system. A vacuum solenoid valve 16 and a vacuum pressure gauge 17 are installed on the external pipeline 15 of the vacuum system.

[0024] The outer end of the aforementioned heat transfer oil pipe 4 is connected to the heat transfer oil heating system 11 through the heat transfer oil external pipeline 12 and the heat transfer oil external pipeline valve 13, and the heat transfer oil temperature control system 18 is located on one side of the heat transfer oil heating system 11.

[0025] The aforementioned vacuum tube 5 is a seamless galvanized tube with a diameter of 25mm, and the heat transfer oil tube 4 is a seamless stainless steel tube with a diameter of 40mm.

[0026] The temperature sensor 6 mentioned above is of type K, and the sealing door 9 is a steel plate with a thickness of 20mm.

[0027] The control circuits of the heat transfer oil heating system 11, the heat transfer oil temperature control system 18, and the vacuum system 14 are conventional technologies well known to those skilled in the art, and will not be described in detail here.

[0028] In use, the cable reel 24 is first fixed to the flatbed trailer 22, and the cable reel 24 is firmly secured with the fixing baffle 23 to prevent it from rolling off. Then, the pulley 21 is aligned with the track 2, and the cable core is pushed into the drying tank 3. Next, the sealing door 9 is closed to keep the drying tank 3 sealed. Then, the heat transfer oil heating system 11 is started. When the temperature reaches the set temperature, the external heat transfer oil pipeline valve 13 and the vacuum solenoid valve 16 are opened, and the vacuum system 14 is started to dry the cable core in the drying tank 3. The system monitors the temperature and pressure through the vacuum solenoid valve 16 and the temperature sensor 6. By controlling and adjusting the working state of the heating system and the vacuum system, the system stops after the set drying time is reached. When the temperature and pressure return to normal, the sealing door 9 is opened, the flatbed trailer 22 is pulled out, and the cable core in the cable reel 24 has completed the drying operation.

[0029] Example 2: The technical solution of the cable core drying device mentioned in this utility model is as follows: It includes a drying tank 3, a base 1, a track 2, a heat transfer oil pipe 4, a vacuum pipe 5, a temperature sensor 6, a door hinge 7, a bushing 8, a sealing door 9, and a support frame 10. The base 1 is located at the lower part of the drying tank 3 and serves to support and fix it. The heat transfer oil pipe 4 is located inside the drying tank 3 and is connected to an external heat transfer oil heating system 11. The vacuum pipe 5 is located at the upper part of the drying tank 3 and is connected to an external vacuum system 14. The temperature sensor 6 is installed at the top of the drying tank 3 and is connected to an external heat transfer oil temperature control system 18. The track 2 is installed at the bottom of the inner wall of the drying tank 3. The support frame 10 is installed at the lower part of the sealing door 9. One side of the middle part of the sealing door 9 is connected to the drying tank 3 through the door hinge 7 and the bushing 8.

[0030] The difference from Example 1 is:

[0031] A movable connecting block is connected to the outside of the track 2 inside the drying tank 3, and the track 2 is also installed on the movable connecting block to facilitate pushing the flatbed trailer 22 carrying the cable reel 24 onto the track 2 inside the drying tank 3.

[0032] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent transformations made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A cable core drying device, comprising a drying tank (3), characterized in that: It also includes a base (1), a track (2), a heat transfer oil pipe (4), a vacuum pipe (5), a temperature sensor (6), a door hinge (7), a bushing (8), a sealing door (9), and a support frame (10). The base (1) is located at the lower part of the drying tank (3). The heat transfer oil pipe (4) is located inside the drying tank (3) and connected to the external heat transfer oil heating system (11). The vacuum pipe (5) is located at the upper part inside the drying tank (3) and connected to the external vacuum system (14). The temperature sensor (6) is installed at the top of the drying tank (3) and connected to the external heat transfer oil temperature control system (18). The track (2) is installed at the bottom of the inner wall of the drying tank (3). The support frame (10) is installed at the lower part of the sealing door (9). The middle side of the sealing door (9) is connected to the drying tank (3) through the door hinge (7) and the bushing (8).

2. The cable core drying device according to claim 1, characterized in that: The heat transfer oil pipe (4) is installed in the lower middle position of the inner wall of the drying tank (3) and is arranged in a "U" shape.

3. The cable core drying device according to claim 2, characterized in that: The drying tank (3) is a cylindrical hollow tank with a wall thickness of not less than 10 mm and made of stainless steel. The bottom of the outer wall is placed on the base (1), and two axially arranged rails (2) are installed at the bottom of the inner wall. One side is sealed with a head, and the other side is connected to a sealing door (9).

4. The cable core drying device according to claim 3, characterized in that: The outer end of the vacuum tube (5) is connected to the vacuum system (14) through the external pipeline (15) of the vacuum system. A vacuum solenoid valve (16) and a vacuum pressure gauge (17) are installed on the external pipeline (15) of the vacuum system.

5. A cable core drying device according to claim 4, characterized in that: The outer end of the heat transfer oil pipe (4) is connected to the heat transfer oil heating system (11) through the heat transfer oil external pipeline (12) and the heat transfer oil external pipeline valve (13), and the heat transfer oil temperature control system (18) is located on one side of the heat transfer oil heating system (11).

6. The cable core drying device according to claim 5, characterized in that: The vacuum tube (5) is a seamless galvanized tube with a diameter of 25mm, and the heat transfer oil tube (4) is a seamless stainless steel tube with a diameter of 40mm.

7. A cable core drying device according to claim 6, characterized in that: The temperature sensor (6) is of type K, and the sealing door (9) is a steel plate with a thickness of 20mm.

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