Fault detection equipment and detection method for energy storage cabinet cable

Abstract

The invention relates to the technical field of cable detection, and particularly discloses fault detection equipment and a fault detection method for an energy storage cabinet cable. The fault detection equipment for the energy storage cabinet cable comprises a tester body, the tester body comprises a testing end and a grounding end, the testing end is arranged in a wire stripping device, the two ends of the wire stripping device are open, a fixed ring and a movable ring are arranged in the wire stripping device, and the fault detection equipment further comprises a first clamping assembly and a cutting assembly, the first clamping assembly is driven by a first driving assembly, the cutting assembly is driven by a second driving assembly, the cutting assembly is movably connected with the first clamping assembly, and a second clamping assembly is arranged on the inner side of the moving ring. The fault detection equipment for the energy storage cabinet cable can perform stripping operation on cables with different diameters, avoids the problem of damage to cable cores or incomplete cutting in the cutting process, is high in adaptability, and can be used for fault detection of cables with different models in an energy storage cabinet.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable detection, and particularly relates to a fault detection device and method for energy storage cabinet cables. Background Art

[0002] An energy storage cabinet is a device used to store electrical energy, usually used in large-scale energy storage systems. It stores electrical energy in batteries or other types of energy storage devices for release when needed. The energy storage cabinet is an indispensable part of modern energy management, renewable energy applications, and power grid regulation. Its main function is to store electrical energy to cope with the instability of power supply or demand fluctuations.

[0003] An energy storage cabinet usually includes components such as battery packs, inverters, and control systems. Since it needs to connect different systems and devices to achieve the storage, conversion, and transmission of electrical energy, there are various types of cables inside the energy storage cabinet. Due to factors such as power requirements, current magnitude, voltage level, and cable length, the thickness of the cables will also vary.

[0004] The Chinese invention patent with the application number 202410832450.0 discloses a cable fault detection device. By setting up a test main body mechanism, a wire stripping and traction mechanism, a thick wire fixing mechanism, a thick wire cutting mechanism, a thin wire stripping mechanism, and a tensioning hydraulic mechanism, it can strip the insulation skin on the surface of the cable before detection. However, this device can only detect cables of specific models and has certain limitations in detecting cables of different thicknesses. Since it twists two handwheels to drive the piston column to rotate, compresses the liquid, and makes the lower pressing block squeeze the skin cutting knife to slide towards the middle of the installation positioning disc, and uses the skin cutting knife to cut through the rubber insulation skin of the cable. However, the rotation of the handwheel is manually controlled, and the number of turns it rotates is directly related to the distance the skin cutting knife moves. If the distance the skin cutting knife moves is too large, it may damage the cable core, and if the distance the skin cutting knife moves is too small, it may not be able to cut through the rubber insulation skin. When detecting faults in energy storage cabinet cables, its practicability is poor and it is easy to damage the cables. Summary of the Invention

[0005] The purpose of the present invention is to provide a fault detection device for energy storage cabinet cables with a simple structure and reasonable design to solve the above problems.

[0006] The present invention achieves the above purpose through the following technical solutions: The first aspect of the present invention provides a fault detection device and method for energy storage cabinet cables, including a tester body. The tester body includes a test end and a grounding end. The test end is arranged in a wire stripping device. The wire stripping device has openings at both ends and is internally provided with a fixed ring and a movable ring. It also includes a first clamping component and a cutting component. The first clamping component is driven by a first driving component, the cutting component is driven by a second driving component, and the cutting component is movably connected to the first clamping component. A second clamping component is arranged inside the movable ring. The cutting component includes a saw blade, and the vertical distance from the lower edge of the saw blade to the axis of the fixed ring is less than the vertical distance from the clamping end of the first clamping component to the axis of the fixed ring. At least two groups of the first clamping components are provided. A first cavity is opened in the fixed ring. The first driving component includes an air pump, which is connected to the first cavity. One end of the first clamping component away from the clamping end is arranged in the first cavity, and a pressure sensor is arranged in the first cavity.

[0007] Further, the cutting component further includes a connecting piece. An arc-shaped groove is opened on the first clamping component, and the arc-shaped groove is coaxially arranged with the fixed ring. A limiting block is correspondingly arranged on the connecting piece, and the saw blade is rotatably arranged on the connecting piece.

[0008] Further, the second driving component includes a toothed ring, which is arranged in a second cavity. The toothed ring meshes with a first gear. It also includes a first motor, and the driving end of the first motor is connected to the first gear. A limiting groove is opened on the toothed ring. A clamping block adapted to the other side of the connecting piece away from the limiting block is arranged. The length of the limiting groove is greater than the length of the limiting block. By the cooperation of the clamping block and the limiting groove, the connecting piece is driven to rotate following the toothed ring.

[0009] Further, two groups of fixed pieces are arranged in the wire stripping device. A screw rod is rotatably connected between the two groups of fixed pieces. One end of the screw rod is connected to the driving end of a stepping motor. The movable ring is threadedly connected to the screw rod. A limiting rod is also arranged between the two groups of fixed pieces, and the movable ring is rotatably connected to the limiting rod.

[0010] Further, the second clamping component is an airbag, and the airbag is arranged inside the movable ring.

[0011] Further, the test end is arranged between the movable ring and the fixed ring. The test end includes a test lead and a test chuck, and the test chuck is controlled by a control component.

[0012] Further, the test chuck includes two sets of jaw chucks, the control component includes a bidirectional screw, both sets of jaw chucks are threadedly connected to the bidirectional screw, a worm gear is further provided on the bidirectional screw, a worm is provided at one end of the screw away from the stepper motor, and the worm meshes with the worm gear.

[0013] Further, an adjusting airbag is provided in the arc-shaped groove, and the adjusting airbag is used to adjust the relative height of the cutting component relative to the clamping end of the first clamping component.

[0014] Further, the saw blade is of a wheel-shaped structure, a second motor is provided on the side of the connecting piece away from the saw blade, and the driving end of the second motor is connected to the saw blade.

[0015] The second aspect of the present invention provides a method for detecting faults in cables of energy storage cabinets, including the following steps: S1. Insert one end of the cable to be tested into the wire stripping device, start the air pump so that the first clamping component clamps the cable, and at the same time start the second clamping component; S2. After the pressure sensor reaches the preset value, turn off the air pump, and at the same time start the first motor to cut off the insulating skin by the rotation of the saw blade 403; S3. Start the stepper motor, the screw rotates, so that the moving ring 5 drives the cut insulating skin away from the fixed ring, and at the same time the screw drives the bidirectional screw to rotate, so that the two sets of jaw chucks approach each other, thereby clamping the cable core; S4. Connect the grounding end of the tester to the outer sheath of the cable for insulation resistance testing.

[0016] The beneficial effects of the present invention are as follows: By the mutual cooperation of the pressure sensor provided in the first cavity and the provided air pump, the moving distance of the first clamping component can be accurately controlled, so that wire stripping operations can be carried out for cables of different diameters. By controlling the height difference between the saw blade and the first clamping component, problems such as damage to the cable core or incomplete cutting during the cutting process can be avoided. The device has strong adaptability and can be used for fault detection of different types of cables in energy storage cabinets. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the internal structural schematic diagram of the wire stripping device of the present invention; Figure 3 is the internal structural schematic diagram of the fixed ring of the present invention; Figure 4 is the cross-sectional view of the fixed ring of the present invention; Figure 5 is the cross-sectional view of the wire stripping device of the present invention; Figure 6It is a schematic structural diagram of the first clamping component and the cutting component of the present invention.

[0018] In the figure: 1, tester body; 2, wire stripping device; 4, fixing ring; 401, first clamping component; 402, cutting component; 403, saw blade; 404, first cavity; 405, pressure sensor; 406, arc groove; 407, connecting piece; 408, limiting block; 409, second cavity; 410, clamping block; 411, adjusting airbag; 5, moving ring; 501, second clamping component; 6, toothed ring; 601, limiting groove; 7, first gear; 8, fixing piece; 9, screw; 10, limiting rod; 11, claw clamp; 12, bidirectional screw; 13, worm gear; 14, second motor. Specific embodiments

[0019] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0020] Embodiment 1 As Figure 1 、 Figure 2 shown, a fault detection device and detection method for energy storage cabinet cables include a tester body 1. The tester body 1 includes a test end and a grounding end. The test end is arranged in a wire stripping device 2. The wire stripping device 2 has openings at both ends and a fixing ring 4 and a moving ring 5 are arranged inside. It also includes a first clamping component 401 and a cutting component 402. The first clamping component 401 is driven by a first driving component, the cutting component 402 is driven by a second driving component, the cutting component 402 is movably connected to the first clamping component 401. A second clamping component 501 is arranged inside the moving ring 5. The cutting component 402 includes a saw blade 403. The vertical distance from the lower edge of the saw blade 403 to the axis of the fixing ring 4 is less than the vertical distance from the clamping end of the first clamping component 401 to the axis of the fixing ring 4.

[0021] In the above technical solution, the difference between the vertical distance from the lower edge of the saw blade 403 to the axis of the fixing ring 4 and the vertical distance from the clamping end of the first clamping component 401 to the axis of the fixing ring 4 is equal to the thickness of the insulating skin. Assuming the thickness of the insulating skin is T, the vertical distance from the lower edge of the saw blade 403 to the axis of the fixing ring 4 is H1, and the vertical distance from the clamping end of the first clamping component 401 to the axis of the fixing ring 4 is H2, then the following relational expression exists: H2 - H1 = T In a specific implementation, at least two groups of the first clamping assemblies 401 are provided. A first cavity 404 is formed in the fixing ring 4. The first driving assembly includes an air pump, which is connected to the first cavity 404. One end of the first clamping assembly 401 away from the clamping end is arranged in the first cavity 404, and a pressure sensor 405 is arranged in the first cavity 404.

[0022] During use, the air pump is used to inflate the first cavity 404, so that the first clamping assembly 401 moves. When the clamping end of the first clamping assembly 401 clamps the cable to be measured, the pressure in the first cavity 404 reaches the preset value of the pressure sensor 405, and at this time the air pump stops inflating. Since the cutting assembly 402 is arranged on the first clamping assembly 401, during the movement of the first clamping assembly 401, the cutting assembly 402 moves together with the first clamping assembly 401. After the first clamping assembly 401 moves to the target position, the saw blade 403 cuts open the insulating skin of the cable to be measured.

[0023] In a specific implementation, as Figure 3 , Figure 4 shown, the cutting assembly 402 further includes a connecting member 407. An arc-shaped groove 406 is formed in the first clamping assembly 401. The arc-shaped groove 406 is coaxially arranged with the fixing ring 4. A limiting block 408 is correspondingly arranged on the connecting member 407, and the saw blade 403 is rotatably arranged on the connecting member 407.

[0024] It should be noted that the arc-shaped groove 406 is coaxially arranged with the fixing ring 4, that is, when the saw blade 403 rotates around the axis of the fixing ring 4 together with the connecting member 407, the limiting block 408 can smoothly move out of the arc-shaped groove 406; and the arc-shaped groove 406 can limit the movement of the connecting member 407 relative to the first clamping assembly 401 in the radial direction of the fixing ring 4; During actual use, the second driving assembly drives the saw blade 403 to rotate around the cable, and the rotating saw blade 403 cuts off the insulating skin, and then the moving ring 5 is used to extract the cut insulating skin.

[0025] In a specific implementation, the second driving assembly includes a toothed ring 6, which is arranged in a second cavity 409. The toothed ring 6 meshes with a first gear 7, and further includes a first motor, and the driving end of the first motor is connected to the first gear 7; A limiting groove 601 is formed in the toothed ring 6. A clamping block 410 adapted to the other side of the connecting member 407 away from the limiting block 408 is arranged. The length of the limiting groove 601 is greater than the length of the limiting block 408. Through the cooperation of the clamping block 410 and the limiting groove 601, the connecting member 407 is driven to rotate with the toothed ring 6.

[0026] It should be noted that for cables of different diameters, the position of the first clamping assembly 401 is different, that is, the position of the cutting assembly 402 is also different. Since the length of the limiting groove 601 is greater than the length of the limiting block 408, it can well adapt to the movement of the cutting assembly 402. Taking the case where the first clamping assembly 401 is vertically arranged as an example, when it is necessary to strip the cable with a small diameter, the air pump is used to send air into the first cavity 404. When the pressure sensor 405 reaches the preset value, the air pump stops working. At this time, the first clamping assembly 401 clamps the cable. During the downward movement of the first clamping assembly 401, the clamping block 410 moves downward, and the longer limiting groove 601 provides space for the downward movement of the clamping block 410. To prevent the clamping block 410 from moving in the limiting groove 601 during the circumferential movement of the saw blade 403 following the toothed ring 6, a cystic structure can be provided on the contact surface between the limiting groove 601 and the clamping block 410. When the cutting assembly 402 follows the movement of the first clamping assembly 401, the cystic structure is not inflated, which facilitates the movement of the clamping block 410 in the limiting groove 601. When the saw blade 403 follows the circumferential movement of the toothed ring 6, air is inflated into the airbag, so that the clamping block is relatively fixed in the limiting groove 601.

[0027] During actual use, the first motor drives the first gear 7 to rotate. By meshing the first gear 7 with the toothed ring 6 to rotate, the connecting piece 407 is driven to rotate, and then the saw blade 403 is driven to rotate around the cable to cut off the insulating skin.

[0028] In the specific implementation manner, two fixing pieces 8 are arranged in the wire stripping device 2. A screw rod 9 is rotatably connected between the two fixing pieces 8. One end of the screw rod 9 is connected to the driving end of the stepping motor. The moving ring 5 is threadedly connected to the screw rod 9. A limiting rod 10 is also arranged between the two fixing pieces 8. The moving ring 5 is rotatably connected to the limiting rod 10.

[0029] During actual use, when one end of the cable is inserted into the wire stripping device 2, both the first clamping assembly 401 and the second clamping assembly 501 clamp the cable. After the saw blade 403 cuts off the insulating skin, the stepping motor is started, and the moving ring 5 is driven to move the insulating skin away from the fixed ring 4, so as to smoothly pull out the insulating skin and expose the cable core.

[0030] In the specific implementation manner, the second clamping assembly 501 is an airbag, and the airbag is arranged inside the moving ring 5.

[0031] During actual use, the cable is clamped and released by inflating and deflating the airbag.

[0032] In the specific implementation manner, as Figure 5 shown, the test end is arranged between the moving ring 5 and the fixed ring 4. The test end includes a test lead and a test chuck, and the test chuck is controlled by a control component.

[0033] During actual use, after the cable insulation is stripped, the test chuck is controlled by the control component to clamp the cable core, so as to perform subsequent detection operations.

[0034] In a specific embodiment, the test chuck includes two sets of claw chucks 11, and the control component includes a bidirectional screw 12. Both sets of claw chucks 11 are threadedly connected to the bidirectional screw 12. A worm gear 13 is further provided on the bidirectional screw 12. A worm is provided at one end of the screw 9 away from the stepping motor, and the worm meshes with the worm gear 13.

[0035] When the screw 9 rotates and drives the moving ring 5 to move away from the fixed ring 4, the worm meshes with the worm gear 13 to drive it to rotate. The rotation of the worm gear 13 drives the bidirectional screw 12 to rotate, so that the two sets of claw chucks 11 approach each other to clamp the cable core.

[0036] In a specific embodiment, as Figure 6 shown, an adjusting airbag 411 is provided in the arc-shaped groove 406, and the adjusting airbag 411 is used to adjust the relative height of the cutting component 402 relative to the clamping end of the first clamping component 401.

[0037] When cutting insulating skins of different thicknesses, the difference between H2 and H1 can be controlled by the adjusting airbag 411 so that the difference is equal to the thickness of the insulating skin.

[0038] In a specific embodiment, the saw blade 403 is of a wheel-shaped structure. A second motor 14 is provided on the side of the connecting piece 407 away from the saw blade 403, and the driving end of the second motor 14 is connected to the saw blade 403.

[0039] Embodiment 2 A fault detection method for cables of energy storage cabinets includes the following steps: S1. Insert one end of the cable to be tested into the wire stripping device 2, start the air pump to make the first clamping component 401 clamp the cable, and at the same time start the second clamping component 501; S2. When the pressure sensor 405 reaches the preset value, turn off the air pump, and at the same time start the first motor to cut off the insulating skin through the rotation of the saw blade 403; S3. Start the stepping motor, the screw 9 rotates, so that the moving ring 5 drives the cut insulating skin away from the fixed ring 4, and at the same time the screw 9 drives the bidirectional screw 12 to rotate, so that the two sets of claw chucks 11 approach each other to clamp the cable core; S4. Connect the grounding end of the tester to the outer sheath of the cable to perform insulation resistance testing.

[0040] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. A fault detection device for cables of an energy storage cabinet, characterized in that, It includes a tester body (1). The tester body (1) includes a test end and a grounding end. The test end is arranged inside a wire stripping device (2). The wire stripping device (2) has openings at both ends and is internally provided with a fixed ring (4) and a moving ring (5). It also includes a first clamping assembly (401) and a cutting assembly (402). The first clamping assembly (401) is driven by a first driving assembly, and the cutting assembly (402) is driven by a second driving assembly. The cutting assembly (402) is movably connected to the first clamping assembly (401). A second clamping assembly (501) is arranged inside the moving ring (5). The cutting assembly (402) includes a saw blade (403). The vertical distance from the lower edge of the saw blade (403) to the axis of the fixed ring (4) is less than the vertical distance from the clamping end of the first clamping assembly (401) to the axis of the fixed ring (4). A first cavity (404) is formed inside the fixed ring (4). The first driving assembly includes an air pump. The air pump is connected to the first cavity (404). One end of the first clamping assembly (401) away from the clamping end is arranged inside the first cavity (404). A pressure sensor (405) is arranged inside the first cavity (404).

2. The fault detection device for the energy storage cabinet cable according to claim 1, characterized in that, The cutting assembly (402) further includes a connecting piece (407). An arc-shaped groove (406) is formed on the first clamping assembly (401). The arc-shaped groove (406) is coaxially arranged with the fixed ring (4). A limiting block (408) is correspondingly arranged on the connecting piece (407). The saw blade (403) is rotatably arranged on the connecting piece (407).

3. The fault detection device for the cable of the energy storage cabinet according to claim 2, characterized in that, The second driving assembly includes a toothed ring (6). The toothed ring (6) is arranged inside a second cavity (409). The toothed ring (6) meshes with a first gear (7). It also includes a first motor. The driving end of the first motor is connected to the first gear (7). A limiting groove (601) is formed on the toothed ring (6). A clamping block (410) adapted to the limiting groove (601) is arranged on the side of the connecting piece (407) away from the limiting block (408). The length of the limiting groove (601) is greater than the length of the limiting block (408). By the cooperation of the clamping block (410) and the limiting groove (601), the connecting piece (407) is driven to rotate following the toothed ring (6).

4. The fault detection device for the cable of an energy storage cabinet according to claim 3, characterized in that, Two groups of fixing pieces (8) are arranged inside the wire stripping device (2). A screw rod (9) is rotatably connected between the two groups of fixing pieces (8). One end of the screw rod (9) is connected to the driving end of a stepping motor. The moving ring (5) is threadedly connected to the screw rod (9). A limiting rod (10) is also arranged between the two groups of fixing pieces (8). The moving ring (5) is rotatably connected to the limiting rod (10).

5. A fault detection device for an energy storage cabinet cable according to any one of claims 1 to 4, characterized in that: The second clamping assembly (501) is an airbag. The airbag is arranged inside the moving ring (5).

6. The fault detection device for the energy storage cabinet cable according to claim 4, characterized in that, The test end is arranged between the moving ring (5) and the fixed ring (4). The test end includes a test lead and a test chuck. The test chuck is controlled by a control assembly.

7. The fault detection device for the cable of the energy storage cabinet according to claim 6, characterized in that, The test chuck includes two groups of jaw chucks (11), and the control assembly includes a bidirectional screw (12). Both groups of the jaw chucks (11) are threadedly connected to the bidirectional screw (12). A worm gear (13) is further arranged on the bidirectional screw (12). A worm is arranged at one end of the screw (9) away from the stepping motor, and the worm meshes with the worm gear (13).

8. A fault detection device for a cable of an energy storage cabinet according to claim 7, characterized in that, An adjusting airbag (411) is arranged in the arc-shaped groove (406), and the adjusting airbag (411) is used to adjust the relative height of the cutting assembly (402) relative to the clamping end of the first clamping assembly (401).

9. The fault detection device for an energy storage cabinet cable according to claim 8, characterized in that: The saw blade (403) is of a wheel-shaped structure. A second motor (14) is arranged on one side of the connecting piece (407) away from the saw blade (403), and the driving end of the second motor (14) is connected to the saw blade (403).

10. A detection method for a fault detection device of a cable for an energy storage cabinet according to any one of claims 7-9, characterized in that, Comprising the following steps: S1. Insert one end of the cable to be tested into the wire stripping device (2), start the air pump to make the first clamping assembly (401) clamp the cable, and start the second clamping assembly (501) at the same time; S2. After the pressure sensor (405) reaches the preset value, turn off the air pump, and start the first motor at the same time to cut off the insulating skin through the rotation of the saw blade (403); S3. Start the stepping motor, the screw (9) rotates, so that the moving ring (5) drives the cut insulating skin away from the fixed ring (4), and at the same time the screw (9) drives the bidirectional screw (12) to rotate, so that the two groups of jaw chucks (11) approach each other, thereby clamping the cable core; S4. Connect the grounding end of the tester to the outer sheath of the cable for insulation resistance testing.

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