Damaged sheath repairing device

Abstract

The utility model relates to a damaged sheath repairing device which comprises a correcting table, a correcting seat and a correcting component, the correcting seat is composed of an upper base and a lower base, the lower base is installed on the correcting table, the two ends of the upper base are fixedly connected with connecting rods, and the tail end of the connecting rod at one end is connected with the lower base through a rotating shaft. The connecting rod at the other end is connected with the lower base through a mounting nut; the correcting part comprises an upper correcting crescent plate, a lower correcting crescent plate and an adjusting lead screw, the bottom of the adjusting lead screw penetrates through a fixed adjusting nut in a threaded mode and is fixedly connected with a bearing, and the lower correcting crescent plate is installed on the lower base; according to the utility model, a deformed metal sheath can be well subjected to circular correction, the correction efficiency of a deformed cable is effectively improved, uniform electric fields in a semi-conductive buffer layer and an aluminum sheath are ensured, and the long-term safe operation of the cable is ensured, so that the potential safety hazard of the cable is eliminated.

Description

Technical field:

[0001] The utility model relates to the field of cable production equipment, in particular to a damaged sheath repairing device. Background technology:

[0002] Cross-linked polyethylene insulated high-voltage cables have excellent electrical properties, good thermal overload characteristics, and are not restricted by installation height differences. They are widely used in urban power transmission and transformation projects. Ensuring the long-term safe operation of cables and extending their service life is crucial throughout every step of the process, from manufacturing, transportation, installation, and so on. Cable laying often takes place in very complex environments. Due to certain environmental factors, cables must withstand multiple bends and lateral forces (lateral pressure). Damage and deformation to the cables will affect their long-term safe operation. High-voltage cables are composed of conductors, conductor shields, cross-linked polyethylene insulation, insulation shields, semi-conductive buffer (water-blocking) tape, corrugated aluminum sheaths, and outer sheaths. Maintaining good electrical contact between the semi-conductive buffer layer and the corrugated aluminum sheath is a critical technical indicator. Dissections of faulty cables that have been in operation in China for about ten years revealed the commonality of white spots and multiple burns on the surface of the semi-conductive buffer tape. Through simulation experiments, it was found that the measured voltage divider values were very different under different contact states between the aluminum sheath and the semi-conductive buffer belt. This phenomenon can lead to uneven electric field distribution inside the aluminum sheath, especially when short-circuit current is generated, which increases the damage to the insulation shielding. During long-term operation of the cable, the white spots on the surface of the semi-conductive buffer belt gradually worsen, making the internal electric field more uneven.

[0003] From another perspective, when the cable's aluminum sheath is deformed, the insulation expands due to heat during operation, and the insulation shield will dent at the location where the inner diameter of the aluminum sheath becomes smaller, which will inevitably damage the insulation shield and create a safety hazard. To ensure the long-term safe operation of the cable, it is necessary to go through all the links from manufacturing, transportation, laying, and installation. The laying of the cable often causes the cable to be subjected to multiple side forces, such as compression and bending. Compression and bending cause the cable to be damaged and deformed, thus affecting its electrical performance. Therefore, in order to ensure the excellent electrical performance of the cable and improve the quality and efficiency of the correction and repair of deformed cables, it is necessary to correct and repair the deformed parts of the cable. To this end, the utility model proposes a damaged sheath repair device to address the deficiencies and shortcomings of the existing technology. Utility model content:

[0004] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide a damaged sheath repair device.

[0005] The technical solution adopted by this utility model is:

[0006] A damaged sheath repair device comprises a correction platform, a correction seat and a correction component, the correction seat consists of an upper base and a lower base, the lower base is installed on the correction platform, both ends of the upper base are fixedly connected with connecting rods, one end of the connecting rod is connected to the lower base by a rotating shaft, and the other end of the connecting rod is connected to the lower base by a mounting nut; the correction component comprises an upper correction crescent plate, a lower correction crescent plate and an adjusting screw, the top of the upper correction crescent plate is fixedly installed with a movable sleeve, a bearing is installed in the movable sleeve, the fixed adjusting nut is provided at the center of the upper base, the bottom thread of the adjusting screw passes through the fixed adjusting nut and is fixedly connected to the bearing, and the lower correction crescent plate is installed on the lower base.

[0007] Preferably, the bottom of the lower correction crescent plate is fixedly mounted on a pressure test block, the pressure test block is mounted on the lower base, and a display screen electrically connected to the pressure test block is mounted on the correction table.

[0008] Preferably, a limit block is fixedly connected to the movable sleeve, and a slot for movably engaging with the connecting rod is provided on the front side of the limit block.

[0009] Preferably, a turntable is connected to the adjusting screw rod.

[0010] The beneficial effects of the utility model are as follows: the utility model can be well used to perform circular correction on the deformed metal sheath, and the correction efficiency of the deformed cable is effectively improved through the utility model, ensuring a uniform electric field between the semi-conductive buffer layer and the inside of the aluminum sheath, thereby ensuring the long-term safe operation of the cable and eliminating the safety hazards of the cable. Description of the drawings:

[0011] Figure 1 : Schematic diagram of the three-dimensional structure of the present invention.

[0012] Figure 2 : The structural diagram of the utility model correction seat.

[0013] Figure 3 : A structural diagram of a correction component of the present invention.

[0014] In the figure: 001, correction table, 002, correction seat, 210, upper base, 220, lower base, 003, correction component, 310, upper correction crescent plate, 320, lower correction crescent plate, 330, adjustment screw, 004, connecting rod, 005, rotating shaft, 006, mounting nut, 007, movable sleeve, 008, bearing, 009, fixed adjustment nut, 010, pressure test block, 011, display screen, 012, limit block, 013, slot, 014, turntable. Specific implementation method:

[0015] The accompanying drawings are for illustrative purposes only and are not to be construed as limitations on this patent. To better illustrate this embodiment, some components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted from the accompanying drawings.

[0016] like Figure 1-3 As shown, a damaged sheath repair device includes a correction platform 001, a correction seat 002 and a correction component 003. The correction seat 002 is composed of an upper base 210 and a lower base 220. The lower base 220 is installed on the correction platform 001. Both ends of the upper base 210 are fixedly connected with a connecting rod 004. The end of one end of the connecting rod 004 is connected to the lower base 220 through a rotating shaft 005. The other end of the connecting rod 004 is connected to the lower base 220 through a mounting nut 006. The correction component 003 includes an upper correction crescent plate 310, a lower correction crescent plate 320 and an adjusting screw 330. A movable sleeve 007 is fixedly installed on the top of the upper correction crescent plate 310, and a bearing 008 is installed in the movable sleeve 007. A fixed adjusting nut 009 is provided at the center of the upper base 210. The bottom thread of the adjusting screw 330 passes through the fixed adjusting nut 009 and is fixedly connected to the bearing 008. The lower correction crescent plate 320 is installed on the lower base 220.

[0017] The further optimization settings of this scheme are: Figure 1-3 As shown, the bottom of the lower correction crescent plate 320 is fixedly mounted on the pressure test block 010, the pressure test block 010 is mounted on the lower base 220, and the correction platform 001 is provided with a display screen 011 electrically connected to the pressure test block 010. When the upper correction crescent plate 310 presses down the cable on the lower correction crescent plate 320, the pressure value of the cable can be directly displayed on the display screen 011, so as to control the pressure of different cables during correction and avoid excessive or insufficient pressure.

[0018] The further optimization settings of this scheme are: Figure 1-3 As shown, a limit block 012 is fixedly connected to the movable sleeve 007 , and a slot 013 that is movably connected to the connecting rod 004 is provided on the front side of the limit block 012 .

[0019] The further optimization settings of this scheme are: Figure 1-3 As shown, a turntable 014 is connected to the adjusting screw rod 330. By rotating the turntable 014, the adjusting screw rod 330 moves downward, pressing the upper correction crescent plate 310 downward to repair the cable with local deformation caused by factors such as excessive pressure on the turning side.

[0020] In the figure, the positional relationship is described only for illustrative purposes and should not be understood as a limitation on this patent. Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A damaged sheath repair device, characterized in that: The invention comprises a correction platform (001), a correction seat (002) and a correction component (003), wherein the correction seat (002) is composed of an upper base (210) and a lower base (220), wherein the lower base (220) is mounted on the correction platform (001), and both ends of the upper base (210) are fixedly connected with a connecting rod (004), wherein the end of the connecting rod (004) at one end is connected to the lower base (220) via a rotating shaft (005), and the other end of the connecting rod (004) is connected to the lower base (220) via a mounting nut (006); the correction component ( 003) comprises an upper correction crescent plate (310), a lower correction crescent plate (320) and an adjusting screw rod (330), wherein a movable sleeve (007) is fixedly installed on the top of the upper correction crescent plate (310), a bearing (008) is installed in the movable sleeve (007), a fixed adjusting nut (009) is provided at the center of the upper base (210), a bottom thread of the adjusting screw rod (330) passes through the fixed adjusting nut (009) and is fixedly connected to the bearing (008), and the lower correction crescent plate (320) is installed on the lower base (220).

2. The damaged sheath repair device according to claim 1, characterized in that: The bottom of the lower correction crescent plate (320) is fixedly mounted on a pressure test block (010), the pressure test block (010) is mounted on the lower base (220), and a display screen (011) electrically connected to the pressure test block (010) is mounted on the correction platform (001).

3. The damaged sheath repair device according to claim 1, characterized in that: A limit block (012) is fixedly connected to the movable sleeve (007), and a clamping slot (013) is provided on the front side of the limit block (012) for movably clamping on the connecting rod (004).

4. The damaged sheath repair device according to claim 1, characterized in that: The adjusting screw rod (330) is connected to a rotating disk (014).

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