Cable insulation layer damage detection equipment

Abstract

A cable insulation layer damage detection device relates to the technical field of cable detection, detects an insulation layer of a cable through an electric spark detector, and comprises a mounting seat, a horizontal bending assembly and a vertical bending assembly. The horizontal bending assembly comprises two horizontal bend wheels used for enabling the cable to be in a Z-shaped bending shape on the horizontal plane. The two horizontal bend wheels are correspondingly and rotationally connected with the horizontal mounting surface of the mounting seat; the vertical bending assembly comprises two vertical bend wheels used for enabling the cable to be in a Z-shaped bending shape on the vertical face. The outer sides of the two horizontal bend wheels and the two vertical bend wheels are provided with probe brush assemblies which are correspondingly and conductively connected with the electric spark detector; according to the utility model, the cable is bent in a Z shape through the horizontal bending assembly and the vertical bending assembly, so that the damage defect of the cable insulation layer at the bending part is amplified, the damage defect of the cable insulation layer is exposed, and the detection accuracy is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable detection, in particular to a cable insulation layer damage detection device. Background Art

[0002] Damage to the cable insulation layer will accelerate the aging process of the cable and reduce the service life of the cable; damage to the cable insulation layer may cause a short circuit between the cable and the ground or between adjacent phase lines, which may not only cause equipment damage, but also cause safety accidents such as fire and electric shock; therefore, damage detection of the cable insulation layer is an indispensable part of power system maintenance, which is of great significance for ensuring the safe operation of the power system, improving power supply reliability, and reducing economic losses; in the prior art, the insulation layer of the cable is often detected for damage by a spark detector. During the detection, the probe brush of the spark detector is moved relative to the cable, and the probe brush applies a certain amount of pulsed high voltage on the cable insulation layer. If the insulation layer is damaged or defective, the high voltage current will form air gap breakdown in these areas, generate spark discharge, and trigger the alarm to sound an alarm;

[0003] In the current cable detection field, most methods adopt the method of letting the cable pass horizontally through the probe brush to perform damage detection; this method can only identify the damaged parts of the cable that have already appeared, but it is powerless for those potential or impending damaged areas; in the subsequent use of the cable, these potential damaged parts may gradually evolve into actual damaged points due to aging, bending or other factors; therefore, in order to comprehensively improve the accuracy and foresight of cable detection, it is urgent to develop a method that can not only accurately detect the existing damage of the cable insulation layer, but also have the ability to identify the parts of the cable that are about to be damaged;

[0004] A Chinese patent (publication number: CN218481560U) discloses a detector anti-jump device; the patent includes an AC spark detector, the outer wall of the AC spark detector is fixedly connected to an equipment bracket, and the upper outer wall of the equipment bracket is hinged to an equipment frame, a sleeve is arranged inside the equipment frame, and the sleeve is fixedly connected to the equipment frame through the connecting column; during detection, one end of the wire and cable is passed through the sleeve, and the position of the wire and cable is restricted through the sleeve, and the four clamps are moved closer to the center of the sleeve by extending the telescopic end of the electric hydraulic rod, so as to clamp and fix the wire and cable in the sleeve; however, the patent can only identify the damaged parts of the cable that have already appeared, but cannot detect the area where the cable is about to be damaged. Utility Model Content

[0005] In order to overcome the deficiencies in the background technology, the utility model discloses a cable insulation layer damage detection device.

[0006] To achieve the above-mentioned invention object, the utility model adopts the following technical scheme:

[0007] A cable insulation layer breakage detection device detects the insulation layer of a cable through an electric spark detector, and includes a mounting seat, a horizontal bending component and a vertical bending component; the mounting seat has a right-angle bending structure, its horizontal mounting surface is provided with the horizontal bending component, and its vertical mounting surface is provided with the vertical bending component; the horizontal bending component includes two horizontal deflecting wheels for making the cable bent in a Z shape on the horizontal plane; the two horizontal deflecting wheels are correspondingly rotatably connected to the horizontal mounting surface of the mounting seat; the vertical bending component includes two vertical deflecting wheels for making the cable bent in a Z shape on the vertical plane, and the two vertical deflecting wheels are correspondingly rotatably connected to the vertical mounting surface of the mounting seat; a brush assembly electrically connected to the electric spark detector correspondingly is arranged on the outer sides of the two horizontal deflecting wheels and the two vertical deflecting wheels, and the brush assembly is correspondingly connected to the mounting seat.

[0008] Preferably, the brush assembly includes a connecting column fixedly connected to the mounting seat correspondingly, a probe rod is vertically connected to one end of the connecting column away from the mounting seat, a brush capable of correspondingly contacting the cable is arranged at one end of the probe rod, and the brush is electrically connected to the electric spark detector correspondingly.

[0009] Preferably, the probe rod is movably inserted into the connecting column, and a spring is sleeved on the rod body of the probe rod between the probe rod corresponding to the brush and the connecting column.

[0010] Preferably, a nut is threadedly connected to one end of the probe rod away from the brush.

[0011] Preferably, the brush is in an arc structure.

[0012] Preferably, a pressing component is arranged on the horizontal mounting surface of the mounting seat. The pressing component includes a supporting wheel rotatably connected to the horizontal mounting surface of the mounting seat correspondingly, a pressing wheel for pressing the cable on the supporting wheel is arranged on one side of the supporting wheel, the pressing wheel is rotatably connected to one end of a swing arm, the other end of the swing arm is correspondingly hinged to the horizontal mounting surface of the mounting seat through a hinge shaft, and a torsion spring for driving the swing arm to approach the supporting wheel is sleeved on the hinge shaft body.

[0013] Due to adopting the technical scheme as described above, the utility model has the following beneficial effects:

[0014] A cable insulation layer damage detection device disclosed by the utility model has a simple structure. When detecting the insulation layer of a cable, one end of the cable can be electrically connected to the ground wire of the electric spark detector, and the other end of the cable passes through a horizontal bending assembly and a vertical bending assembly in sequence, and the cable is wound by a winding device. The horizontal bending assembly and the vertical bending assembly bend the cable into a Z shape, so as to magnify the damage defect of the cable insulation layer at the bending part and expose the defect that the cable insulation layer is about to be damaged. The probe brush assembly is located at the bending part of the cable and detects while the damage defect of the cable insulation layer is magnified, effectively improving the detection accuracy.

[0015] In addition, a pressing assembly is arranged on the horizontal installation surface of the installation seat, which can drive the swing arm to deflect through a torsion spring, and the swing arm drives the pressing wheel to deflect, pressing the cable on the supporting wheel to prevent the cable from accidentally disengaging from the horizontal bending assembly during the detection process and ensuring the smooth progress of the detection of the cable insulation layer. Brief Description of the Drawings

[0016] Figure 1 is a structural schematic diagram of the utility model;

[0017] Figure 2 is a structural schematic diagram of the probe brush assembly;

[0018] Figure 3 is a structural schematic diagram of the pressing assembly.

[0019] In the figure: 1. Cable; 2. Installation seat; 3. Horizontal redirecting wheel; 4. Vertical redirecting wheel; 5. Probe brush assembly; 5-1. Connecting column; 5-2. Probe rod; 5-3. Probe brush; 5-4. Spring; 5-5. Nut; 6. Pressing assembly; 6-1. Supporting wheel; 6-2. Pressing wheel; 6-3. Swing arm; 6-4. Hinge shaft. Detailed Description of the Embodiment

[0020] The utility model can be explained in detail through the following embodiments. The purpose of disclosing the utility model is to protect all technical improvements within the scope of the utility model. In the description of the utility model, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", etc. indicating the orientation or position relationship, it is only corresponding to the drawings of the present application for the convenience of describing the utility model, rather than indicating or implying that the device or element referred to must have a specific orientation.

[0021] Embodiment 1, in combination with the attached Figures 1-2, A cable insulation layer breakage detection device that detects the insulation layer of cable 1 through an electric spark detector, which includes a mounting base 2, a horizontal bending assembly, and a vertical bending assembly; the mounting base 2 has a right-angled bending structure, its horizontal mounting surface is provided with a horizontal bending assembly, and its vertical mounting surface is provided with a vertical bending assembly; the horizontal bending assembly includes two horizontal deflecting wheels 3 that make cable 1 bend in a Z shape on the horizontal plane; the two horizontal deflecting wheels 3 are correspondingly rotatably connected to the horizontal mounting surface of the mounting base 2; the vertical bending assembly includes two vertical deflecting wheels 4 that make cable 1 bend in a Z shape on the vertical plane, and the two vertical deflecting wheels 4 are correspondingly rotatably connected to the vertical mounting surface of the mounting base 2; when detecting the insulation layer of cable 1, first fix the mounting base 2, then electrically connect one end of cable 1 to the grounding wire of the electric spark detector, make the other end of cable 1 pass through the horizontal bending assembly and the vertical bending assembly in sequence, and wind up cable 1 through a winding device; the horizontal bending assembly and the vertical bending assembly make cable 1 bend in a Z shape, thereby magnifying the breakage defect of the insulation layer of cable 1 at the bending point, or exposing the defect that the insulation layer of cable 1 is about to break;

[0022] On the outer sides of the two horizontal deflecting wheels 3 and the two vertical deflecting wheels 4, there is a probe brush assembly 5 that is correspondingly electrically connected to the electric spark detector. The probe brush assembly 5 is correspondingly connected to the mounting base 2, that is, the probe brush assembly 5 is located at the bending point of cable 1, and while the breakage defect of the insulation layer of cable 1 is magnified, detection is carried out, effectively improving the detection accuracy;

[0023] The probe brush assembly 5 includes a connecting column 5-1 that is correspondingly fixedly connected to the mounting base 2. One end of the connecting column 5-1 away from the mounting base 2 is vertically connected with a probe rod 5-2. One end of the probe rod 5-2 is provided with a probe brush 5-3 that can correspondingly contact cable 1, and the probe brush 5-3 is correspondingly electrically connected to the electric spark detector; as needed, the probe brush 5-3 has an arc-shaped structure, which can effectively improve the detection coverage of the probe brush 5-3 and further improve the detection accuracy;

[0024] The probe rod 5-2 is movably inserted into the connecting column 5-1. A spring 5-4 is sleeved on the rod body of the probe rod 5-2 between the probe brush 5-3 and the connecting column 5-1, that is, the probe rod 5-2 can automatically adapt to cables 1 of different diameter specifications under the action of the spring 5-4;

[0025] One end of the probe rod 5-2 away from the probe brush 5-3 is threadedly connected with a nut 5-5, which can effectively prevent the probe rod 5-2 from accidentally detaching from the connecting column 5-1.

[0026] Example 2, combined with the attached Figure 3, A cable insulation breakage detection device, which is different from that of Embodiment 1 in that on the basis of Embodiment 1, a pressing component 6 is provided on the horizontal mounting surface of the mounting seat 2. The pressing component includes a support wheel 6-1 rotatably connected to the horizontal mounting surface of the mounting seat 2. On one side of the support wheel 6-1, there is a pressing wheel 6-2 for pressing the cable 1 against the support wheel 6-1. The pressing wheel 6-2 is rotatably connected to one end of a swing arm 6-3. The other end of the swing arm 6-3 is correspondingly hinged to the horizontal mounting surface of the mounting seat 2 through a hinge shaft 6-4. And a torsion spring for driving the swing arm 6-3 to approach the support wheel 6-1 is sleeved on the body of the hinge shaft 6-4, that is, the torsion spring can be used to drive the swing arm 6-3 to deflect. The swing arm 6-3 drives the pressing wheel 6-2 to deflect, pressing the cable 1 against the support wheel 6-1 to prevent the cable 1 from accidentally disengaging from the horizontal bending component during the detection process.

[0027] The parts not detailed in the present utility model are prior art. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model; therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, aiming to include all changes falling within the meaning and scope of the equivalent elements in the present utility model.

Claims

1. A cable insulation layer damage detection device detects the insulation layer of a cable (1) through an electric spark detector, and is characterized in that: It includes a mounting base (2), a horizontal bending assembly, and a vertical bending assembly; the mounting base (2) has a right-angle bending structure, with a horizontal bending assembly provided on its horizontal mounting surface and a vertical bending assembly provided on its vertical mounting surface; the horizontal bending assembly includes two horizontal deflecting wheels (3) for bending the cable (1) into a Z-shaped curve in the horizontal plane; the two horizontal deflecting wheels (3) are rotatably connected to the horizontal mounting surface of the mounting base (2) correspondingly; the vertical bending assembly includes two vertical deflecting wheels (4) for bending the cable (1) into a Z-shaped curve in the vertical plane, and the two vertical deflecting wheels (4) are rotatably connected to the vertical mounting surface of the mounting base (2) correspondingly; a brush assembly (5) electrically connected to the spark detector is provided on the outer sides of the two horizontal deflecting wheels (3) and the two vertical deflecting wheels (4), and the brush assembly (5) is connected to the mounting base (2) correspondingly.

2. The cable insulation layer breakage detection device according to claim 1, characterized in that: The brush assembly (5) includes a connecting column (5-1) fixedly connected to the mounting base (2) correspondingly. One end of the connecting column (5-1) away from the mounting base (2) is vertically connected with a probe rod (5-2). One end of the probe rod (5-2) is provided with a brush (5-3) capable of correspondingly contacting the cable (1), and the brush (5-3) is electrically connected to the spark detector correspondingly.

3. The cable insulation layer breakage detection device according to claim 2, characterized in that: The probe rod (5-2) is movably inserted into the connecting column (5-1), and a spring (5-4) is sleeved on the rod body between the probe rod (5-2) corresponding to the brush (5-3) and the connecting column (5-1).

4. The cable insulation layer breakage detection device according to claim 3, wherein: A nut (5-5) is threadedly connected to the end of the probe rod (5-2) away from the brush (5-3).

5. The cable insulation layer breakage detection device according to claim 2, characterized in that: The brush (5-3) has an arc-shaped structure.

6. The cable insulation breakage detection device according to claim 1, characterized in that: A pressing assembly (6) is provided on the horizontal mounting surface of the mounting base (2). The pressing assembly includes a support wheel (6-1) rotatably connected to the horizontal mounting surface of the mounting base (2) correspondingly. One side of the support wheel (6-1) is provided with a pressing wheel (6-2) for pressing the cable (1) onto the support wheel (6-1). The pressing wheel (6-2) is rotatably connected to one end of a swing arm (6-3). The other end of the swing arm (6-3) is correspondingly hinged to the horizontal mounting surface of the mounting base (2) through a hinge shaft (6-4), and a torsion spring for driving the swing arm (6-3) to approach the support wheel (6-1) is sleeved on the shaft body of the hinge shaft (6-4).

Images