Cable flexible joint operation trepanning device

Abstract

The utility model discloses a cable flexible joint operation trepanning device, belongs to the field of cable equipment, and solves the problems that in the prior art, a silicon rubber case isolation insulation material causes non-uniform heating in a crosslinking process, and an uncrosslinked insulation layer is extremely easy to damage in a silicon rubber case damage process. According to the technical scheme, an internal channel penetrating through the hole opening cylinder is formed in the hole opening cylinder, and a hole opening plug is installed in the internal channel, attached to the inner wall of the internal channel and slides in the internal channel; and the tool bit of the trepanning cylinder is positioned in the internal channel of the trepanning cylinder. According to the cable flexible joint operation trepanning device, the silicon rubber sleeve is separated from the insulating layer in a mode of adsorbing part of the silicon rubber sleeve, so that the damage to the insulating layer is reduced; and the insulating material can be uniformly heated in the cross-linking process through the holes.

Description

Technical Field

[0001] The utility model relates to a cable flexible joint operation hole opening device, belonging to the field of cable processing 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] The current mainstream technology "two-step method" is to prepare cable flexible joints, that is, first complete the filling and shaping of the insulating material in the injection molding device, and then complete the cross-linking of the molded structure in the cross-linking mold. In order to prevent the heating speed from being too fast, a silicone sleeve of a certain thickness is used in the injection molding tooling mold to isolate the insulating material, but this setting is prone to uneven heating of the cable flexible joint during the heating and cross-linking process. The cable flexible joint needs to be removed from the silicone sleeve and placed in the cross-linking mold for heating and cross-linking operations. Because the silicone sleeve is in close contact with the cable flexible joint, it is very easy to damage the uncross-linked insulation layer in the process of destroying the silicone sleeve. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a cable flexible joint operation hole opening device, which separates the silicone sleeve from the insulation layer by adsorbing part of the silicone sleeve, thereby reducing the damage to the insulation layer.

[0005] The technical solution adopted by the utility model is a cable flexible joint operation hole-opening device, comprising a hole-opening cylinder, the hole-opening cylinder having a cutter head;

[0006] The hole-opening cylinder has an internal passage running through it, and a hole-opening plug is installed in the internal passage, and the hole-opening plug fits against the inner wall of the internal passage and slides in the internal passage;

[0007] The cutter head of the perforating tube is located at the bottom end of the internal channel of the perforating tube.

[0008] Optimally, the above-mentioned cable flexible joint operates the hole-opening device, the hole-opening plug is connected to a pull handle, and the pull handle is connected to one end of the hole-opening plug;

[0009] One end of the pull handle is fixed to the hole plug, and the end of the internal passage at the other end of the pull handle is open and extends to the outside of the end of the hole tube.

[0010] Optimally, in the above-mentioned cable flexible joint operation hole-opening device, the surface of the hole-opening plug that fits with the inner wall of the internal channel has an annular rubber ring, and the rubber ring is in contact with the inner wall of the internal channel.

[0011] Optimally, in the above-mentioned cable flexible joint operation hole-opening device, one end of the hole-opening cylinder is a tapered end; one end opening of the internal channel is located at the end of the tapered end of the hole-opening cylinder;

[0012] The inner passage has an annular cutter head on the opening of the tapered end of the perforated cylinder.

[0013] Optimally, in the above-mentioned cable flexible joint operating hole-opening device, the number of rubber rings on the hole-opening plug is at least two.

[0014] Optimally, the above-mentioned cable flexible joint operation opening device has an internal passage including a suction section and a piston section;

[0015] The inner diameter of the piston section is larger than the inner diameter of the suction section; the hole opening plug moves in the piston section;

[0016] The suction section is located within the tapered end of the perforated barrel.

[0017] The beneficial effects of the present application are: the technical solution of the present application is easy to operate and can ensure high work efficiency. At the same time, the solution of the present application is to suck part of the silicone sleeve into the perforated cylinder, and the bottom end of the suction section is provided with an annular cutter head. As the suction part of the silicone sleeve continues to expand, the cutting force provided by the cutter head after contacting it continues to increase and finally completes the cutting. Compared with the method of directly cutting with a knife, it avoids the situation where the uncross-linked insulation layer is damaged by a large destructive force, thereby ensuring the integrity of the insulation layer.

[0018] In the solution of the present application, the circular holes opened on the silicone sleeve by a hole-opening device can be arranged in an array according to experience. Under the condition of ensuring that the silicone sleeve can provide sufficient supporting force after being destroyed, the orderly opening area can effectively solve the heat insulation effect of the silicone sleeve and the local concentrated heating phenomenon. Therefore, the uncross-linked insulating layer can be heated evenly in the cross-linking mold without being taken out of the silicone sleeve, which greatly increases the work efficiency and the success rate of cable flexible joint preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of this application;

[0020] Figure 2 This is a schematic diagram of the internal structure of this application. DETAILED DESCRIPTION

[0021] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] The present application discloses a cable flexible joint operation hole opening device, comprising a hole opening tube 1 and a hole opening plug 2. The hole opening tube 1 has an internal channel 100 penetrating the hole opening tube 1, and the hole opening plug 2 is installed in the internal channel 100, and the hole opening plug 2 is attached to the inner wall of the internal channel 100 and slides in the internal channel 100.

[0023] The perforated tube 1 is a metal rod, and the internal channel 100 is formed by drilling a hole in the perforated tube 1 . The internal channel 100 is arranged along the length extension direction of the perforated tube 1 and penetrates the perforated tube 1 .

[0024] One end of the perforated tube 1 is set as a tapered end, one end opening of the internal channel 100 is located at the tapered end of the perforated tube 1, and the opening of the internal channel 100 at the tapered end of the perforated tube 1 is processed into an annular cutter head 3.

[0025] The internal passage 100 includes a suction section 101 and a piston section 102. The inner diameter of the piston section 102 is larger than that of the suction section 101, the opening plug 2 moves in the piston section 102, and the suction section 101 is located in the tapered end of the opening cylinder 1.

[0026] In this embodiment, the hole plug 2 is a cylindrical metal-made hole plug 2 that moves in the piston section 102 of the internal passage 100, and the cylindrical axis of the hole plug 2 is coaxially arranged with the axis of the piston section 102. The hole plug 2 is connected to a pull handle 201, which is connected to one end of the hole plug 2. One end of the pull handle 201 is fixed to the hole plug 2, and the other end of the pull handle 201 opens at the end of the internal passage 100 and extends to the outside of the end of the hole cylinder 1.

[0027] The hole plug 2 can be pulled by the pull handle 201 to move in the piston section 102 of the internal channel 100. The surface of the hole plug 2 that fits the inner wall of the internal channel 100 has an annular rubber ring 103, and the rubber ring 103 contacts the inner wall of the internal channel 100. In this embodiment, two rubber rings 103 are provided on the hole plug 2, and an annular groove is provided on the hole plug 2. The rubber ring 103 is stuck in the groove to prevent the rubber ring 103 from falling off.

[0028] The rubber ring 103 fills the gap between the hole plug 2 and the piston section 102, and can increase the sealing performance and avoid air leakage when the hole plug 2 is pulled.

[0029] In the present application, during operation, the hole plug 2 is pushed to the bottom of the hole tube 1, and then the opening of the internal channel 100 at the bottom of the hole tube 1 fits the silicone sleeve, and the hole plug 2 is finally pulled up. When the hole plug 2 moves in the internal channel 100, the silicone sleeve is sucked into the hole tube 1 by pressure. At this time, the silicone sleeve is cut by a blade in the hole tube 1, so that an approximately circular opening is formed on the silicone sleeve. The circular holes opened on the silicone sleeve by the hole opening device of the present application can be arranged in an orderly manner according to experience, and several holes can be arranged to increase the direct contact of heat with the insulating layer. Therefore, the uncross-linked insulating layer can be heated evenly in the cross-linking mold without being taken out of the silicone sleeve, which greatly increases the work efficiency and the success rate of cable flexible joint preparation.

[0030] 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 flexible joint operation hole-opening device, comprising a hole-opening cylinder (1), the hole-opening cylinder (1) having a cutter head (3); characterized in that: The hole-opening cylinder (1) has an internal channel (100) penetrating the hole-opening cylinder (1), and a hole-opening plug (2) is installed in the internal channel (100). The hole-opening plug (2) fits the inner wall of the internal channel (100) and slides in the internal channel (100); The cutter head (3) of the perforated cylinder (1) is located at the end of the internal channel (100) of the perforated cylinder (1).

2. The cable flexible joint operation opening device according to claim 1, characterized in that: The hole plug (2) is connected to a pull handle (201), and the pull handle (201) is connected to one end of the hole plug (2); One end of the pull handle (201) is fixed to the hole opening plug (2), and the end of the internal channel (100) at the other end of the pull handle (201) is open and extends to the outside of the end of the hole opening tube (1).

3. The cable flexible joint operation opening device according to claim 1, characterized in that: The surface of the hole opening plug (2) that fits the inner wall of the internal channel (100) has an annular rubber ring (103), and the rubber ring (103) is in contact with the inner wall of the internal channel (100).

4. The cable flexible joint operation opening device according to claim 1, characterized in that: One end of the perforated tube (1) is a tapered end; one end opening of the internal passage (100) is located at the tapered end of the perforated tube (1); The inner channel (100) is provided with an annular cutter head (3) at the opening of the conical end of the perforated cylinder (1).

5. The cable flexible joint operation opening device according to claim 3, characterized in that: The number of the rubber rings (103) on the hole plug (2) is at least two.

6. The cable flexible joint operation opening device according to claim 4, characterized in that: The internal channel (100) comprises a suction section (101) and a piston section (102); The inner diameter of the piston section (102) is greater than the inner diameter of the suction section (101); the hole opening plug (2) moves inside the piston section (102); The suction section (101) is located inside the conical end of the perforated cylinder (1).

Images