Cable insulation layer foundation vulcanization integrated device

Abstract

The invention discloses a cable insulation layer foundation vulcanization integrated device, belongs to the field of cable equipment, and solves the problems that in the prior art, the preparation process of a flexible joint insulation layer is complex, and the interface of an extruded insulation material and a cable flexible joint cannot be fused. According to the device, the two machine body outer molds are in butt joint to form the cylindrical mold body; the machine body outer molds are arc-shaped plates, and a lifting plate is arranged in the arc-shaped interior of each machine body outer mold; the lifting plates in the two machine body outer molds are in butt joint to form a cylinder shape. A push rod is arranged between the lifting plate and the machine body outer mold; one end of the push rod is fixed to the lifting plate, and the other end of the push rod penetrates through the machine body outer mold and moves relative to the machine body outer mold. The push rod is connected with a pushing mechanism pushing the push rod and the machine body outer mold to move relatively. According to the basic vulcanization integrated device for the cable insulation layer, the functions of the vulcanization pipe and the extrusion pipe are integrated, the preparation time is shortened, and meanwhile, the preparation success rate is increased through application of the autonomous pressure control component lifting plate.

Description

Technical Field

[0001] The invention relates to a cable insulation layer base vulcanization integrated device, belonging to the field of cable equipment. Background Art

[0002] In recent years, with the development of the national economy, long-distance ultra-high voltage direct current transmission projects have been widely used in China. Due to the limitations of production length and transportation conditions, a single cable cannot meet the actual needs of the project, so cable joint manufacturing technology becomes particularly important. Especially for cables in special use scenarios such as submarine cables, they may need to withstand certain external forces (such as bending, stretching) and chemical effects (such as seawater corrosion). Ordinary joint structures will be more prone to cracks, and the consequences of cracks will also be easier and faster to develop further (such as water tree reactions in seawater, causing insulation breakdown).

[0003] In the existing flexible joint insulation layer preparation process, most of them adopt the method of filling and shaping the insulation material in the injection molding device, and then the molded structure is filled with insulation material in the cross-linking mold to complete the cross-linking of the insulation material. The process is relatively complicated and time-consuming. In addition, it is usually wrapped with a silicone sleeve during the cross-linking process, but the silicone material has a low hardness and cannot maintain the specified shape of the insulation layer, which ultimately causes the quality problem that the interface between the later extruded insulation material and the cable flexible joint cannot be integrated. Summary of the invention

[0004] The present invention provides a cable insulation layer base vulcanization integrated device, which integrates the functions of a vulcanization tube and an extrusion tube, reduces the preparation time, and also increases the preparation success rate.

[0005] The technical solution adopted by the present invention is a cable insulation layer base vulcanization integrated device, comprising a cylindrical mold body, the mold body comprising two body outer molds, the two body outer molds are butt-jointed to form a cylindrical mold body;

[0006] The outer mold of the machine body is an arc-shaped plate, and each arc-shaped inner part of the outer mold of the machine body has a lifting plate; the lifting plates in the two outer molds of the machine body are connected to form a cylindrical shape; a push rod is provided between the lifting plate and the outer mold of the machine body;

[0007] One end of the push rod is fixed to the lifting plate, and the other end of the push rod passes through the outer mold of the machine body and moves relative to the outer mold of the machine body; the push rod is connected to a pushing mechanism that pushes the push rod to move relative to the outer mold of the machine body.

[0008] Optimized, in the above-mentioned integrated device for vulcanizing the basic cable insulation layer, a groove for accommodating a lifting plate is constructed on the arc-shaped inner wall of the outer mold of the body, and when the lifting plate is fitted into the groove, the lifting plate is flush with the arc-shaped inner wall of the outer mold of the body.

[0009] Optimized, the above-mentioned cable insulation layer base vulcanization integrated device has two arc-shaped clamps in one end of the mold body, and the two clamps are respectively arranged in cooperation with the two outer molds of the machine body;

[0010] The clamp is connected to the inner wall of the end portion of the outer mold of the machine body through bolts.

[0011] Optimized, the above-mentioned cable insulation layer base vulcanization integrated device has a plurality of annular guide sleeves constructed on the outer mold of the body, and the middle of the guide sleeve has a through hole penetrating the outer mold of the body;

[0012] The outer mold of the machine body is connected with a plurality of push rods, which are matched with the guide sleeve. The push rods pass through the through hole in the middle of the guide sleeve and slide in the through hole in the middle of the guide sleeve.

[0013] Optimized, the above-mentioned cable insulation layer base vulcanization integrated device has a plurality of channels constructed on the outer mold of the body.

[0014] Optimally, in the above-mentioned integrated device for vulcanization of the basic cable insulation layer, a plurality of connecting ears are constructed on both sides of the outer mold of the body; the connecting ears of the two outer molds of the body are matched and fixed by bolts.

[0015] Optimized, the above-mentioned cable insulation layer base vulcanization integrated device, the pushing mechanism includes a sleeve nut; an anti-rotation mechanism is provided between the push rod and the guide sleeve;

[0016] The sleeve nut is cylindrical and the upper end of the sleeve nut is closed; the outer wall of the sleeve nut is constructed with an external thread, and the side wall of the guide sleeve is constructed with an external thread; the sleeve nut is sleeved on the guide sleeve and matched with the guide sleeve thread;

[0017] The middle section of the push rod has an expansion portion; the upper end of the push rod passes through the closed end of the sleeve nut and moves relatively with the sleeve nut, and the expansion portion of the push rod contacts and cooperates with the inner wall of the upper end of the sleeve nut.

[0018] Optimized, in the above-mentioned cable insulation layer base vulcanization integrated device, the expansion part is two nuts, the push rod is a threaded rod, the two nuts are threadedly connected to the push rod; the thread rotation directions of the two nuts are opposite.

[0019] Optimized, the above-mentioned cable insulation layer base vulcanization integrated device, the anti-rotation mechanism includes an anti-rotation protrusion and an anti-rotation groove; the anti-rotation protrusion is constructed on the inner wall of the guide sleeve; the anti-rotation groove is constructed on the push rod and is 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 present application are: in the technical solution of the present application, the functions of the vulcanization tube and the extrusion tube are integrated, the silicone sleeve is prevented from flowing in the device, and the device itself is insulated into its own shape during the extrusion and vulcanization process by means of its own hardness and the lifting plate. The device not only greatly reduces the time cost of flexible joint preparation, but also greatly increases the success rate of flexible joint preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of this application;

[0022] Figure 2 for Figure 1 Side view of

[0023] Figure 3 for Figure 2 AA section view;

[0024] Figure 4 This is a schematic diagram of the structure of the body outer mold of the present application;

[0025] Figure 5 This is a schematic diagram of the internal structure of the outer model of the body of the present application;

[0026] Figure 6 This is a schematic diagram of the structure of the sleeve nut of the present application;

[0027] Figure 7 This is a schematic diagram of the connection structure between the lifting plate and the push rod of the present application;

[0028] Figure 8 for Figure 5 CC section view;

[0029] Fig. 9 This is a schematic diagram of the structure of the guide sleeve of the present application. DETAILED DESCRIPTION

[0030] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] As shown in the figure, the present invention is a cable insulation layer base vulcanization integrated device, including a cylindrical mold body, the mold body adopts a half structure, and is formed by two body outer molds 1 connected to form a cylindrical mold body. A plurality of connecting ears 101 are respectively constructed on both sides of the body outer mold 1, and the connecting ears 101 of the two body outer molds 1 are matched and fixed by bolts.

[0032] In this embodiment, the outer mold 1 of the machine body is in the form of an arc plate, and a lifting plate 2 is arranged inside the arc of each outer mold 1. The lifting plates 2 in the two outer molds 1 of the machine body are connected to form a cylindrical internal pressurizing structure. During the pressurizing operation, the lifting plate 2 is pushed to move away from the outer mold 1 of the machine body by the push rod 3 between the lifting plate 2 and the outer mold 1 of the machine body. When the insulating material is squeezed into the silicone sleeve, the lifting plate 2 is indirectly controlled to squeeze the silicone sleeve by controlling the movement of the push rod 3, thereby reducing the volume of the silicone sleeve in the machine body and increasing the pressure in the silicone sleeve, thereby achieving the effect of enhancing the success rate of vulcanization.

[0033] A plurality of holes 6 are constructed on the outer mold 1 of the machine body for ventilation during the vulcanization process to achieve heat conduction.

[0034] 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 outer mold 1 of the machine body and moves relatively to the outer mold 1 of the machine body.

[0035] Several annular guide sleeves 5 can be constructed on the outer mold 1 of the body. The number of guide sleeves 5 can be determined according to the axial length of the outer mold 1 of the body. If the axial length of the outer mold 1 of the body is long, four to five guide sleeves 5 can be arranged. Generally, the number of guide sleeves 5 on the outer mold 1 of the body should be no less than two, unless the length of the outer mold 1 of the body is short, for example, the axial length of the outer mold 1 of the body is less than 20 centimeters, then only one guide sleeve 5 can be arranged. The number of guide sleeves 5 is set in coordination with the push rod 3, and each push rod 3 is equipped with a guide sleeve 5 to guide the push rod 3 to move.

[0036] In this embodiment, two annular guide sleeves 5 are constructed on the outer mold 1 of the machine body, and the middle of the guide sleeve 5 has a through hole penetrating the outer mold 1 of the machine body. The outer mold 1 of the machine body is connected to two push rods 3, which are arranged in cooperation with the guide sleeve 5, and the push rods 3 pass through the through hole in the middle of the guide sleeve 5 and slide in the through hole in the middle of the guide sleeve 5.

[0037] The push rod 3 is connected with a pushing mechanism for pushing the push rod 3 to move relative to the outer mold 1. The pushing mechanism includes a sleeve nut 7, an anti-rotation mechanism, a sleeve nut 7, and the like.

[0038] The structure of the sleeve nut 7 is shown in the figure. The sleeve nut 7 is cylindrical and the upper end of the sleeve nut 7 is closed. The outer wall of the sleeve nut 7 is constructed with an external thread, and the side wall of the guide sleeve 5 is constructed with an external thread. The sleeve nut 7 is sleeved on the guide sleeve 5 and matched with the guide sleeve 5 thread.

[0039] The middle section of the push rod 3 has an expansion portion, the closed end of the sleeve nut 7 has a through hole, the upper end of the push rod 3 passes through the through hole of the closed end of the sleeve nut 7 and moves relative to the sleeve nut 7, and the expansion portion of the push rod 3 contacts and cooperates 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, the two nuts are threadedly connected to the push rod 3, and the threads of the two nuts 8 are in opposite directions.

[0041] The anti-rotation mechanism is constructed between the push rod 3 and the guide sleeve 5. The anti-rotation mechanism includes an anti-rotation protrusion and an anti-rotation groove. The anti-rotation protrusion is constructed on the inner wall of the guide sleeve 5, and the anti-rotation groove is constructed on the push rod 3 and arranged along the length extension 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.

[0042] The push rod 3 passes through the outer mold 1 of the machine body, the guide sleeve 5, the positioning sleeve and the sleeve nut 7 in sequence. The positioning sleeve is annular and welded on the top opening of the guide sleeve 5, and the anti-rotation protrusion is constructed on the annular inner surface of the positioning sleeve. The outer mold 1 of the machine body, the guide sleeve 5 and the positioning sleeve are a whole. The convex 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 but not rotate. The two nuts are fixed on the push rod 3 by 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, continue to rotate the sleeve nut 7, and the sleeve nut 7 will press the nut and the push rod 3 to move downward together, thereby pushing the lifting plate 2.

[0043] A groove body for accommodating the lifting plate 2 is constructed on the arc-shaped inner wall of the outer mold 1 of the body. When the lifting plate 2 is fitted into the groove body, the lifting plate 2 is flush with the arc-shaped inner wall of the outer mold 1 of the body, so that after the push rod 3 passes through the outer mold 1 of the body, the surface of the lifting plate 2 and the inner surface of the outer mold 1 of the body remain in the same plane.

[0044] Two arc-shaped clamps 4 are provided in one end of the mold body. The two clamps 4 are respectively arranged in cooperation with the two outer molds 1 of the machine body. The clamps 4 are connected to the inner wall of the end of the outer mold 1 of the machine body through bolts.

[0045] The end of the outer mold 1 of the body connected to the extruder and the clamp 4 have three threaded holes, and the silicone sleeve is squeezed between the clamp 4 and the outer mold 1 of the body by bolts, so that the position of the silicone sleeve is fixed.

[0046] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

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) are butt-jointed to form a cylindrical mold body; characterized in that: The outer mold (1) is an arc-shaped plate, and each outer mold (1) has a lifting plate (2) inside the arc; the lifting plates (2) in the two outer molds (1) are butted together to form a cylindrical shape; a push rod (3) is provided between the lifting plate (2) and the outer mold (1); 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 outer mold of the machine body (1) and moves relative to the outer mold of the machine body (1); the push rod (3) is connected to a pushing mechanism for pushing the push rod (3) to move relative to the outer mold of the machine body (1).

2. The cable insulation layer base vulcanization integrated device according to claim 1, characterized in that: A groove body for accommodating the lifting plate (2) is constructed on the arc-shaped inner wall of the outer mold (1) of the machine body. When the lifting plate (2) is fitted into the groove body, the lifting plate (2) is flush with the arc-shaped inner wall of the outer mold (1) of the machine body.

3. The cable insulation layer base vulcanization integrated device according to claim 1, characterized in that: Two arc-shaped clamping parts (4) are provided in one end portion of the mold body, and the two clamping parts (4) are respectively arranged in cooperation with the two outer molds (1) of the machine body; The clamping member (4) is connected to the inner wall of the end portion of the body outer mold (1) via bolts.

4. The cable insulation layer base vulcanization integrated device according to claim 1, characterized in that: A plurality of annular guide sleeves (5) are constructed on the outer mold (1) of the machine body, and a through hole penetrating the outer mold (1) is provided in the middle of the guide sleeves (5); The outer mold (1) of the machine body is connected to a plurality of push rods (3), which are matched with the guide sleeve (5). The push rods (3) pass through the through hole in the middle of the guide sleeve (5) and slide in the through hole in the middle of the guide sleeve (5).

5. The cable insulation layer base vulcanization integrated device according to claim 1, characterized in that: A plurality of channels (6) are constructed on the outer mold (1) of the machine body.

6. The cable insulation layer base vulcanization integrated device according to claim 1, characterized in that: A plurality of connection ears (101) are respectively constructed on both sides of the body outer mold (1); the connection ears (101) of the two body outer molds (1) are matched and fixed by bolts.

7. The cable insulation layer base vulcanization integrated device according to claim 4, characterized in that: The pushing mechanism comprises a sleeve nut (7); an anti-rotation mechanism is provided between the push rod (3) and the guide sleeve (5); The sleeve nut (7) is cylindrical and the upper end of the sleeve nut (7) is closed; the outer wall of the sleeve nut (7) is formed with an external thread, and the side wall of the guide sleeve (5) is formed with an external thread; the sleeve nut (7) is sleeved on the guide sleeve (5) and is threadedly matched with the guide sleeve (5); The push rod (3) has an expansion portion in the middle section; the upper end of the push rod (3) passes through the closed end of the sleeve nut (7) and moves relative to the sleeve nut (7), and the expansion portion of the push rod (3) contacts and cooperates with the inner wall of the upper end of the sleeve nut (7).

8. The cable insulation layer base vulcanization integrated device according to claim 7, characterized in that: 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 threads of the two nuts (8) are in opposite directions.

9. The cable insulation layer base vulcanization integrated device according to claim 7, characterized in that: The anti-rotation mechanism comprises an anti-rotation protrusion and an anti-rotation groove; the anti-rotation protrusion is constructed on the inner wall of the guide sleeve (5); the anti-rotation groove is constructed on the push rod (3) and is arranged along the length extension 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.

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