Cable insulation layer foundation vulcanization integrated device
By integrating the functions of vulcanizing tubes and extrusion tubes and using a half-structure mold, the problems of complex cable joint insulation layer preparation process and weak bonding were solved, achieving efficient preparation and improved durability of cable joints.
Patent Information
- Application Number
- CN202422944678.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-29
AI Technical Summary
The existing insulation layer preparation process for cable joints is complex and costly. The low hardness of the silicone sleeve prevents the insulation layer from fusing with the interface of the cable joint during the cross-linking process, which can easily lead to cracks and affect the durability of the cable.
By integrating the functions of the vulcanizing tube and the extrusion tube, and using a half-structure mold body, the shape of the insulation layer is maintained and the pressure during the vulcanization process is enhanced through the cooperation of the lifting plate and the push rod, so as to achieve integrated vulcanization of the insulation layer.
It shortens the preparation time, improves the success rate of flexible joint preparation, enhances the bonding strength between the insulation layer and the cable, and improves the durability of the cable.
Smart Images
Figure CN223520157U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a cable insulation layer basic vulcanization integrated device belongs to cable equipment field. BACKGROUND
[0002] In recent years, with the development of national economy, long distance EHV DC transmission project is widely applied in China. Limited by production length and transportation conditions, single cable cannot meet the actual demand of engineering, so the cable joint manufacturing technology becomes particularly important. Especially for the cable in special use scene such as submarine cable, it may need to bear certain external force (such as bending, stretching), chemical action (such as seawater corrosion), ordinary joint structure will be more prone to crack, and the consequences of crack will be more easily and quickly further developed (such as water treeing in seawater, leading to insulation breakdown).
[0003] In the existing soft joint insulation layer preparation process, the insulation material filling and shaping is usually completed in an injection molding device, and then the molded structure is filled with insulation material in a crosslinking mold to complete crosslinking, which is a relatively complex process with high time cost. In addition, the silicone sleeve is usually used to wrap it during crosslinking, but the silicone material has low hardness and cannot maintain the specified shape of the insulation layer, resulting in quality problems that the interface between the finally extruded insulation material and the cable soft joint cannot be fused. INVENTION CONTENTS
[0004] The utility model provides a kind of cable insulation layer basic vulcanization integrated device, the function of vulcanization pipe and extrusion pipe is integrated, preparation time is reduced, and preparation success rate is also increased.
[0005] The utility model adopts the technical scheme of a kind of cable insulation layer basic vulcanization integrated device, including cylindrical mold body, mold body includes two machine body outer molds, two machine body outer molds are butted as cylindrical mold body;
[0006] The machine body outer mold is arc-shaped plate, and each machine body outer mold has a lifting plate in the arc-shaped interior;The lifting plates in the two machine body outer molds are butted as a cylinder;The lifting plate and the machine body outer mold have a push rod therebetween;
[0007] One end of the push rod is fixed to the lifting plate, and the other end of the push rod passes through the machine body outer mold and moves relative to the machine body outer mold;The push rod is connected with a pushing mechanism that pushes the push rod and the machine body outer mold relative to each other.
[0008] Optimized, the above-mentioned cable insulation layer basic vulcanization integrated device, the arc-shaped inner wall of machine body outer mold is constructed with the groove that contains lifting plate, when lifting plate is pasted in groove, lifting plate is flush with the arc-shaped inner wall of machine body outer mold.
[0009] The optimized cable insulation layer base vulcanization integrated device has two arc-shaped clamping pieces in one end of the mold body, and the two clamping pieces are arranged in cooperation with the two outer mold bodies.
[0010] The clamping pieces are connected with the inner wall of the end of the outer mold body through bolts.
[0011] The optimized cable insulation layer base vulcanization integrated device has a plurality of annular guide sleeves formed on the outer mold body, and the middle part of the guide sleeve has a through hole penetrating the outer mold body.
[0012] The outer mold body is connected with a plurality of push rods, the push rods are arranged in cooperation with the guide sleeves, the push rods penetrate the through holes in the middle parts of the guide sleeves and slide in the through holes in the middle parts of the guide sleeves.
[0013] The optimized cable insulation layer base vulcanization integrated device has a plurality of holes formed on the outer mold body.
[0014] The optimized cable insulation layer base vulcanization integrated device has a plurality of connecting ears formed on the two sides of the outer mold body; the connecting ears of the two outer mold bodies are arranged in cooperation and fixed through bolts.
[0015] The optimized cable insulation layer base vulcanization integrated device includes a sleeve nut in the push mechanism; the push rod and the guide sleeve have an anti-rotation mechanism therebetween.
[0016] The sleeve nut is cylindrical and the upper end of the sleeve nut is closed; the outer side wall of the sleeve nut is formed with external threads, and the side wall of the guide sleeve is formed with external threads; the sleeve nut is sleeved on the guide sleeve and threadedly cooperates with the guide sleeve.
[0017] The middle part of the push rod has an expansion part; the upper end of the push rod penetrates the closed end of the sleeve nut and moves relative to the sleeve nut, and the expansion part of the push rod is in contact with the inner wall of the upper end of the sleeve nut.
[0018] The optimized cable insulation layer base vulcanization integrated device has two nuts as the expansion parts, a threaded rod as the push rod, and the two nuts are threadedly connected to the push rod; the threads of the two nuts are in opposite directions.
[0019] The optimized cable insulation layer base vulcanization integrated device has an anti-rotation protrusion and an anti-rotation groove in the anti-rotation mechanism; the anti-rotation protrusion is formed on the inner wall of the guide sleeve; the anti-rotation groove is formed on the push rod and arranged along the length extension direction of the push rod; the anti-rotation protrusion is inserted into the anti-rotation groove and slidably cooperates with the anti-rotation groove.
[0020] The advantages of the application are that the functions of the vulcanization pipe and the extrusion pipe are integrated, the silica gel sleeve is prevented from flowing in the device, the device maintains its shape in the extrusion and vulcanization process by means of its hardness and the lifting plate, the device greatly reduces the time cost of the preparation of the soft joint, and the success rate of the preparation of the soft joint is greatly increased. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is a structural schematic diagram of the application;
[0022] Figure 2 is a side view of Figure 1 ;
[0023] Figure 3 is an A-A sectional view of Figure 2 ;
[0024] Figure 4 is a structural schematic diagram of the body outer mold of the application;
[0025] Figure 5 is a structural schematic diagram of the internal structure of the body outer mold of the application;
[0026] Figure 6 is a structural schematic diagram of the sleeve nut of the application;
[0027] Figure 7 is a structural schematic diagram of the connection between the lifting plate and the push rod of the application;
[0028] Figure 8 is a C-C sectional view of Figure 7 ;
[0029] Figure 9 is a structural schematic diagram of the guide sleeve of the application. DETAILED DESCRIPTION
[0030] The technical characteristics of the application will be further described below in combination with the drawings and specific embodiments.
[0031] As shown in the drawings, the application is a cable insulation layer basic vulcanization integrated device, which comprises a cylindrical mold body, the mold body adopts a half structure, and two body outer molds 1 are butt-jointed to form the cylindrical mold body. The two body outer molds 1 are respectively provided with a plurality of connecting ears 101 on the two sides, and the connecting ears 101 of the two body outer molds 1 are cooperatively arranged and fixed by bolts.
[0032] In this embodiment, the body outer mold 1 adopts the form of an arc-shaped plate, and an arc-shaped inner part of each body outer mold 1 is matched with a lifting plate 2. The two lifting plates 2 in the two body outer molds 1 are connected to form a cylindrical inner pressurizing structure. In the pressurizing operation, the lifting plate 2 is moved away from the body outer mold 1 by a push rod 3 between the lifting plate 2 and the body outer mold 1. When the insulating material is extruded into the silica gel sleeve, the movement of the push rod 3 is controlled to indirectly control the extrusion of the lifting plate 2 on the silica gel sleeve, so as to reduce the volume of the silica gel sleeve in the body and increase the pressure in the silica gel sleeve, thereby achieving the effect of enhancing the vulcanization success rate.
[0033] A plurality of holes 6 are formed on the body outer mold 1 for ventilation during the vulcanization process to realize the conduction of heat.
[0034] One end of the push rod 3 is fixed to the lifting plate 2, and the other end of the push rod 3 penetrates through the body outer mold 1 and moves relative to the body outer mold 1.
[0035] A plurality of annular guide sleeves 5 can be formed on the body outer mold 1. The number of the guide sleeves 5 can be determined according to the axial length of the body outer mold 1. If the axial length of the body outer mold 1 is relatively long, four to five guide sleeves 5 can be arranged. Generally, the number of the guide sleeves 5 on the body outer mold 1 should not be less than two, unless the length of the body outer mold 1 is relatively short, such as the axial length of the body outer mold 1 is less than twenty centimeters, and only one guide sleeve 5 can be arranged. The number of the guide sleeves 5 is matched with the push rod 3, and each push rod 3 is arranged with one guide sleeve 5 to guide the movement of the push rod 3.
[0036] In this embodiment, two annular guide sleeves 5 are formed on the body outer mold 1, and the middle part of each guide sleeve 5 has a through hole penetrating through the body outer mold 1. The body outer mold 1 is connected with two push rods 3, and the push rod 3 is matched with the guide sleeve 5. The push rod 3 penetrates through the through hole in the middle part of the guide sleeve 5 and slides in the through hole in the middle part of the guide sleeve 5.
[0037] The push rod 3 is connected with a pushing mechanism for moving the push rod 3 relative to the body outer mold 1. The pushing mechanism includes a sleeve nut 7, an anti-rotation mechanism, and the sleeve nut 7.
[0038] The structure of the sleeve nut 7 is shown in the figure. The sleeve nut 7 is in a cylindrical shape, and the upper end of the sleeve nut 7 is closed. The outer side wall of the sleeve nut 7 is formed with external threads, the side wall of the guide sleeve 5 is formed with external threads, the sleeve nut 7 is sleeved on the guide sleeve 5 and is threadedly matched with the guide sleeve 5.
[0039] The middle part of the push rod 3 has an expansion part, the closed end of the sleeve nut 7 has a through hole, the upper end of the push rod 3 penetrates through the through hole of the closed end of the sleeve nut 7 and moves relative to the sleeve nut 7, and the expansion part of the push rod 3 is in contact with the inner wall of the upper end of the sleeve nut 7.
[0040] The expansion part is two nuts 8, the push rod 3 is a threaded rod, and the two nuts are threadedly connected to the push rod 3, and the two nuts 8 are opposite in screw direction.
[0041] The anti-rotation mechanism is arranged between the push rod 3 and the guide sleeve 5. The anti-rotation mechanism comprises an anti-rotation protrusion and an anti-rotation groove. The anti-rotation protrusion is arranged on the inner wall of the guide sleeve 5, and the anti-rotation groove is arranged on the push rod 3 and arranged along the length direction of the push rod 3. The anti-rotation protrusion is inserted into the anti-rotation groove and is in sliding fit with the anti-rotation groove.
[0042] The push rod 3 passes through the body outer mold 1, the guide sleeve 5, the positioning sleeve and the sleeve nut 7 in sequence. The positioning sleeve is annular and is welded on the top opening of the guide sleeve 5, and the anti-rotation protrusion is arranged on the annular inner surface of the positioning sleeve. The body outer mold 1, the guide sleeve 5 and the positioning sleeve are an integral whole. The protrusion structure in the positioning sleeve cooperates with the anti-rotation groove structure of the push rod 3, so that the push rod 3 can only move up and down and cannot rotate. The two nuts are fixed on the push rod 3 through the reverse thread cooperation. The outer surface of the guide sleeve 5 and the inner surface of the sleeve nut 7 are threaded structures. When the sleeve nut 7 is rotated by external force, the sleeve nut 7 moves downward. When the sleeve nut 7 reaches the nut position, the sleeve nut 7 will move downward together with the nut and the push rod 3 by continuously rotating the sleeve nut 7, thereby pushing the lifting plate 2.
[0043] The arc-shaped inner wall of the body outer mold 1 is provided with a groove body for accommodating the lifting plate 2. When the lifting plate 2 is attached to the groove body, the lifting plate 2 is flush with the arc-shaped inner wall of the body outer mold 1, so that the surface of the lifting plate 2 and the inner surface of the body outer mold 1 remain in a plane after the push rod 3 passes through the body outer mold 1.
[0044] One end of the mold body is provided with two arc-shaped clamping pieces 4. The two clamping pieces 4 are arranged in cooperation with the two body outer molds 1 respectively, and the clamping pieces 4 are connected to the end inner wall of the body outer mold 1 through bolts.
[0045] The end of the body outer mold 1 connected to the extruder and the clamping piece 4 are provided with three threaded holes. The silica gel sleeve is pressed between the clamping piece 4 and the body outer mold 1 through bolts, so that the position of the silica gel sleeve is fixed.
[0046] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Within the scope of the present application, changes, modifications, additions or replacements made by ordinary skilled in the art should be within the protection scope of the present application.
Claims
1. A cable insulation layer base vulcanization integrated device, comprising a cylindrical mold body, the mold body comprising two body outer molds (1), the two body outer molds (1) being butted to form the cylindrical mold body; characterized in that: the body outer mold (1) is an arc-shaped plate, and each body outer mold (1) has a lifting plate (2) inside the arc shape; the lifting plates (2) in the two body outer molds (1) are butted to form a cylinder; the lifting plate (2) and the body outer mold (1) have a push rod (3) therebetween; one end of the push rod (3) is fixed to the lifting plate (2), and the other end of the push rod (3) passes through the body outer mold (1) and moves relatively to the body outer mold (1); the push rod (3) is connected with a pushing mechanism for moving the push rod (3) and the body outer mold (1) relatively. An arc-shaped inner wall of the body outer mold (1) is provided with a groove for accommodating the lifting plate (2), and when the lifting plate (2) is fitted in the groove, the lifting plate (2) is flush with the arc-shaped inner wall of the body outer mold (1).
2. The cable insulation base vulcanization integration apparatus according to claim 1, characterized by: One end of the push rod (3) is fixed to the lifting plate (2), and the other end of the push rod (3) passes through the body outer mold (1) and moves relatively to the body outer mold (1); the push rod (3) is connected with a pushing mechanism for moving the push rod (3) and the body outer mold (1) relatively.
3. The cable insulation base vulcanization integration apparatus according to claim 1, characterized by: One end of the push rod (3) is fixed to the lifting plate (2), and the other end of the push rod (3) passes through the body outer mold (1) and moves relatively to the body outer mold (1); the push rod (3) is connected with a pushing mechanism for moving the push rod (3) and the body outer mold (1) relatively. One end of the push rod (3) is fixed to the lifting plate (2), and the other end of the push rod (3) passes through the body outer mold (1) and moves relatively to the body outer mold (1); the push rod (3) is connected with a pushing mechanism for moving the push rod (3) and the body outer mold (1) relatively.
4. The cable insulation base vulcanization integration apparatus according to claim 1, characterized by: The body outer mold (1) is provided with a plurality of holes (6). The body outer mold (1) is provided with a plurality of connecting ears (101) on both sides; the connecting ears (101) of the two body outer molds (1) are arranged in cooperation and fixed by bolts.
5. The cable insulation base vulcanization integration apparatus of claim 1, wherein: The pushing mechanism comprises a sleeve nut (7); the push rod (3) and the guide sleeve (5) have an anti-rotation mechanism therebetween; 6. The cable insulation base vulcanization integration apparatus according to claim 1, characterized by: The sleeve nut (7) is cylindrical, and the upper end of the sleeve nut (7) is closed; the outer side wall of the sleeve nut (7) is provided with external threads, and the side wall of the guide sleeve (5) is provided with external threads; the sleeve nut (7) is sleeved on the guide sleeve (5) and threadedly cooperates with the guide sleeve (5); 7. The cable insulation base vulcanization integration apparatus according to claim 4, characterized by: The middle section of the push rod (3) has an expansion part; the upper end of the push rod (3) passes through the closed end of the sleeve nut (7) and moves relatively to the sleeve nut (7), and the expansion part of the push rod (3) is in contact with the inner wall of the upper end of the sleeve nut (7). The expansion part is two nuts (8), the push rod (3) is a threaded rod, and the two nuts are threadedly connected to the push rod (3); the screw rotation directions of the two nuts (8) are opposite. The anti-rotation mechanism comprises an anti-rotation protrusion and an anti-rotation groove; the anti-rotation protrusion is formed on the inner wall of the guide sleeve (5); the anti-rotation groove is formed on the push rod (3) and is arranged along the length direction of the push rod (3); the anti-rotation protrusion is inserted into the anti-rotation groove and slidably cooperates with the anti-rotation groove.
8. The cable insulation base vulcanization integration apparatus according to claim 7, characterized by: 9. The cable insulation base vulcanization integration apparatus according to claim 7, characterized by: