Cable circulation monitoring device

Abstract

The utility model is suitable for the technical field of circulating current monitoring, and provides a cable circulating current monitoring device which is used for monitoring cable circulating current. The cable circulation monitoring device comprises a box, a current transformer, a battery, a control mainboard, a top cover and a rubber gasket. The middle parts of the box and the top cover are provided with through holes for cable harnesses to pass through, the peripheries of the box and the top cover are provided with a plurality of screw holes, the rubber gasket is arranged between the box and the top cover, and the box and the top cover are fixed through bolts; the current transformer and the battery are arranged in the cavity of the box, the control mainboard is fixed on the lower side of the top cover, and the control mainboard is in circuit connection with the battery and the current transformer; the battery is used for supplying power to the control mainboard, and the control mainboard is used for outputting cable circulation monitored by the current transformer.

Description

Technical Field

[0001] This application relates to the field of circulating current monitoring technology, and in particular to a cable circulating current monitoring device. Background Technology

[0002] Cable circulating current refers to the induced electromotive force generated on the metal sheath of a high-voltage cable due to the alternating magnetic field produced by the current. If this magnetic field forms a path through the ground, a grounding circulating current will be generated on the metal sheath. Excessive cable circulating current can affect the cable's current carrying capacity and service life, and may even cause overheating and damage. The magnitude of cable circulating current is influenced by various factors, including the cable's contact resistance, grounding resistance, grounding method, and the length and arrangement of cable segments. Monitoring cable circulating current is necessary to protect and extend the cable's service life and prevent accidents.

[0003] In related technologies, the monitoring of circulating current in high-voltage cables is usually achieved by installing a grounding box on the grounding wire of the coaxial cable of the cable sheath. The grounding box is powered by external power supply or inductive power supply. This method involves large equipment size, inconvenient installation, and one set of equipment can only be used with one fixed type of grounding wire, resulting in limited adaptability. Utility Model Content

[0004] This application proposes a cable circulating current monitoring device for monitoring cable circulating current.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, a cable circulating current monitoring device is provided, comprising a box, a current transformer, a battery, a control board, a top cover, and a rubber gasket; the middle part of the box and the top cover is provided with a through hole for cable harnesses to pass through, and the periphery of the box and the top cover is provided with multiple screw holes; the rubber gasket is disposed between the box and the top cover, and the box and the top cover are fixed by bolts; the current transformer and the battery are disposed in the cavity of the box, and the control board is fixed on the underside of the top cover; the control board is connected to the battery and the current transformer circuits respectively; the battery is used to power the control board, and the control board is used to output the cable circulating current monitored by the current transformer.

[0007] Furthermore, the current transformer consists of two interlocking halves, and a fixing groove is provided on the inner side of the outer wall of the box for placing the interlocking protrusions of the current transformer.

[0008] Furthermore, at least one support column is provided on the underside of the top cover, which is used to abut against the current transformer after the top cover is fastened to the box.

[0009] Further, the cable loop current monitoring device further comprises a buckle structure for fixing the box on the cable harness, and the buckle structure comprises a rubber connecting column and a metal clamp.

[0010] Further, the lower side of the bottom of the box and / or the upper side of the top cover is provided with a threaded connecting port, the rubber connecting column is sleeved outside the threaded connecting port, and the metal clamp is sleeved outside the rubber connecting column.

[0011] Further, the battery is fixed at the bottom in the cavity of the box, or the battery is arranged between the current transformer and the control mainboard and is fixed to the control mainboard.

[0012] Further, the battery is a dry battery or a rechargeable battery.

[0013] Further, in the case that the battery is a rechargeable battery, a circuit is connected between the current transformer and the battery, and the current transformer is used to charge the battery after obtaining electric energy.

[0014] Further, the upper side of the top cover is provided with a photovoltaic module, and the photovoltaic module is electrically connected with the battery, and in the case that the battery is a rechargeable battery, the photovoltaic module is used to charge the battery during operation.

[0015] Further, the box is an open-close structure in the vertical direction, and is closed after the cable harness is placed in the through hole.

[0016] The cable loop current monitoring device provided in the application comprises a box sleeved outside the cable harness, a current transformer for monitoring the cable loop current, a control mainboard for outputting the cable loop current data monitored by the current transformer, and a battery for supplying power to the control mainboard, the current transformer, the control mainboard and the battery are arranged in the cavity of the box, and the box is sealed through the top cover and the rubber gasket arranged between the top cover and the box. The volume of the cable loop current monitoring device is reduced, and the cable loop current monitoring device provided in the application is only needed to be sleeved outside the cable harness, so that the cable loop current monitoring can be realized, and the adaptability is high and the installation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic view of a cable loop current monitoring device provided in an embodiment of the application;

[0018] Figure 2 FIG. 2 is a structural schematic view of another cable loop current monitoring device provided in an embodiment of the application;

[0019] Figure 3 FIG. 3 is a structural schematic view of another cable loop current monitoring device provided in an embodiment of the application;

[0020] Figure 4Structure diagram of still another cable loop current monitoring device provided for the embodiment of the present application;

[0021] Figure 5 Structure diagram of still another cable loop current monitoring device provided for the embodiment of the present application;

[0022] Figure 6 Structure diagram of still another cable loop current monitoring device provided for the embodiment of the present application;

[0023] Reference signs:

[0024] Cable loop current monitoring device 100, box 110, fixing groove 111, threaded connection port 112, current transformer 120, one half of the current transformer 121, the other half of the current transformer 122, buckling protrusion 123, battery 130, control mainboard 140, top cover 150, support column 151, rubber gasket 160, rubber connecting column 170, metal clamp 180, cable harness 200. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. The examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation to the present application. In addition, it should be understood that the specific embodiments described herein are only used to explain the present application, and cannot be used to limit the present application.

[0026] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present application.

[0027] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0028] In the description of the application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0030] The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the application, the components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the application. In addition, the application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0031] The application provides a cable circulating current monitoring device, which comprises a box, a current transformer, a battery, a control mainboard, a top cover and a rubber gasket. The middle part of the box and the top cover is provided with a through hole for the cable harness to pass through, and the periphery of the box and the top cover is provided with a plurality of screw holes. The rubber gasket is arranged between the box and the top cover, and the box and the top cover are fixed by bolts. The current transformer and the battery are arranged in the cavity of the box, and the control mainboard is fixed to the lower side of the top cover. The control mainboard is electrically connected with the battery and the current transformer circuit respectively. The battery is used for power supply of the control mainboard, and the control mainboard is used for outputting the cable circulating current monitored by the current transformer.

[0032] In the cable loop current monitoring device provided in the application, a box is arranged outside the cable harness, the current transformer for monitoring the cable loop current, the control mainboard for outputting the cable loop current data monitored by the current transformer, and the battery for supplying power to the control mainboard are arranged in the cavity of the box, and then the sealing of the box is realized through the top cover and the rubber gasket arranged between the top cover and the box. The volume of the cable loop current monitoring device is reduced, and the cable loop current monitoring device provided in the application only needs to be sleeved outside the cable harness, so that the cable loop current monitoring can be realized, and the adaptability is high and the installation is convenient.

[0033] Embodiment one

[0034] Figure 1 A structural schematic diagram of a cable loop current monitoring device is shown, wherein the cable loop current monitoring device 100 comprises a box 110, a current transformer 120, a battery 130, a control mainboard 140, a top cover 150, and a rubber gasket 160.

[0035] The middle part of the box 110 and the top cover 150 is provided with a through hole for the cable harness 200 to pass through.

[0036] The periphery of the box 110 is provided with a plurality of screw holes, and the corresponding positions of the periphery of the top cover 150 are provided with the same number of screw holes, which are used to fix the box 110 and the top cover 150 by bolts after the box 110 and the top cover 150 are buckled.

[0037] Optionally, the box 110 and the top cover 150 can be made of polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), etc.

[0038] The rubber gasket 160 is arranged between the box 110 and the top cover 150, which is used to guarantee the sealing effect in the cavity of the box 110 after the box 110 and the top cover 150 are buckled and tightened.

[0039] The current transformer 120 and the battery 130 are arranged in the cavity of the box 110, the control mainboard 140 is fixed to the lower side of the top cover 150, and the control mainboard 140 is electrically connected with the battery 130 and the current transformer 120 respectively.

[0040] In some embodiments, the control mainboard 140 can be customized according to the shape of the top cover 150 and fixed to the lower side of the top cover 150 by bolts or adhesives, so that the control mainboard 140 is located in the cavity of the box after the top cover 150 and the box 110 are buckled.

[0041] The battery 130 is a dry battery or a rechargeable battery.

[0042] Optionally, the battery 130 can be fixed at the bottom of the cavity of the box 110, or the battery 130 can also be arranged between the current transformer 120 and the control mainboard 140 and fixed to the control mainboard 140. The fixing mode can be adhesive fixing.

[0043] In some embodiments, in the case that the battery 130 is a rechargeable battery, the current transformer 120 is further connected with the battery 130 in an electrical circuit, and the current transformer 120 is further configured to charge the battery 130 through the electrical circuit connection between the current transformer 120 and the battery 130 after obtaining electrical energy, so as to ensure the power supply of the control mainboard 140, thereby prolonging the service life of the cable loop current monitoring device.

[0044] In some embodiments, in the case that the battery 130 is a rechargeable battery, the current transformer 120 is further connected with the battery 130 in an electrical circuit, and the current transformer 120 is further configured to charge the battery 130 through the electrical circuit connection between the current transformer 120 and the battery 130 after obtaining electrical energy, so as to ensure the power supply of the control mainboard 140, thereby prolonging the service life of the cable loop current monitoring device.

[0045] In some embodiments, in the case that the battery 130 is a rechargeable battery, the current transformer 120 is further connected with the battery 130 in an electrical circuit, and the current transformer 120 is further configured to charge the battery 130 through the electrical circuit connection between the current transformer 120 and the battery 130 after obtaining electrical energy, so as to ensure the power supply of the control mainboard 140, thereby prolonging the service life of the cable loop current monitoring device.

[0046] Embodiment two

[0047] Referring to Figures 2-5 , a structure schematic diagram of the cable loop current monitoring device provided by the present application is shown in multiple views.

[0048] In some embodiments, the current transformer 120 is composed of two halves that are buckled with each other, such as 121 and 122 in Figure 2 , and the buckling forms two buckling protrusions 123.

[0049] The inner side of the outer wall of the box 110 is provided with a fixing groove 111, and the fixing groove 111 is used to place the buckling protrusions 123 formed by the buckling of the two halves 121 and 122 of the current transformer 120.

[0050] In this way, by placing the buckling protrusions 123 on the current transformer 120 in the fixing groove 111 on the inner side of the outer wall of the box 110, the rotation of the current transformer 120 can be avoided, and the stability of the cable loop current monitoring device can be ensured.

[0051] In some embodiments, the lower side of the top cover 150 is provided with at least one supporting column 151, and the supporting column 151 is used to abut against the current transformer 120 after the top cover 150 is buckled with the box 110.

[0052] As shown in Figure 3 , Figure 4As shown, two support columns 151 are arranged on the lower side of the top cover 150 and abut against the current transformer 120 after being buckled, thereby fixing the current transformer 120 and avoiding the current transformer 120 from sliding, and ensuring the stability of the internal structure of the cable loop current monitoring device.

[0053] In some embodiments, the cable loop current monitoring device 100 further comprises a buckle structure for fixing the box 110 on the cable harness 200, such as Figures 3-5 As shown, the buckle structure comprises a rubber connecting column 170 and a metal clamp 180.

[0054] The lower side of the bottom of the box 110 and / or the upper side of the top cover is provided with a threaded connecting port 112, for example, Figure 4 As shown in the middle, the threaded connecting port 112 is arranged on the lower side of the bottom of the box 110, so that the rubber connecting column 170 in the buckle structure is sleeved outside the threaded connecting port 112, and the metal clamp 180 is sleeved outside the rubber connecting column 170, and the metal clamp 180 is tightened, thereby completing the fixation of the box 110 and the cable harness 200.

[0055] The rubber connecting column 170 can increase the contact area with the cable harness, increase the firmness during connection, and based on the insulation of the rubber material, can avoid the charge from being transmitted to the metal clamp 180, thereby improving the safety. In addition, the metal clamp 180 which can be tightened or loosened can be suitable for cable harnesses of different diameters, thereby improving the adaptability of the cable loop current monitoring device 100.

[0056] In some embodiments, the box 110 is an opening and closing structure in the vertical direction, and the connection part is connected in a way of groove fitting, and is closed after the cable harness is placed in the through hole, and the connection part is connected by applying sealing adhesive, thereby ensuring the sealing of the inside of the box and avoiding water from entering the inside of the box.

[0057] Embodiment Three

[0058] Figure 6 An external structure schematic diagram of a cable loop current monitoring device provided by the present application is shown.

[0059] The cable harness 200 passes through the through hole in the middle part of the cable loop current monitoring device 100, and the cable loop current monitoring device 100 comprises a box 110, a current transformer 120, a battery 130, a control mainboard 140, a top cover 150, a rubber connecting column 170, and a metal clamp 180.

[0060] The top cover 150 and the box 110 form a cavity after being buckled. The current transformer 120, the battery 130 and the control mainboard 140 are arranged in the cavity. The battery 130 is fixed to the bottom of the cavity by adhesive, the current transformer 120 is arranged above the battery and is fixed by the fixing groove 111 on the inner side of the outer wall of the box, and the control mainboard 140 is fixed to the lower side of the top cover 150, so that the control mainboard 140 is located in the cavity of the box 110 after the top cover 150 is buckled.

[0061] After the rubber connecting column 170 is sleeved at the threaded connecting port 112 on the lower side of the box 110, the metal clamp 180 sleeved on the outer side of the rubber connecting column 170 is tightened, and the fixation of the cable loop flow monitoring device 100 and the cable harness 200 is completed.

[0062] In the cable loop flow monitoring device 100 provided in the application, the shell composed of the box 100, the top cover 150 and the rubber gasket 160 provides a better sealing and waterproof environment for the current transformer 120, the battery 130 and the control mainboard 140. Meanwhile, based on the fixing groove 111 in the box 110 and the support column 151 on the lower side of the top cover 150, better fixation of the current transformer 120 can be achieved, and the stability of the cable loop flow monitoring device 100 is guaranteed. In addition, the buckle structure with adjustable size can adapt to cable harnesses with different diameters, and the adaptability of the cable loop flow monitoring device 100 is improved. Therefore, the cable loop flow monitoring device 100 provided in the application can be used for a long time in complex environments (dark, humid or exposed to the sun, etc.), and the risk of the current transformer falling off or water entering in the complex environment is eliminated, and the monitoring effect on the cable loop flow is guaranteed.

[0063] The above is only a preferred embodiment of the application and is not used to limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A cable loop flow monitoring device, characterized by The box, the current transformer, the battery, the control mainboard, the top cover and the rubber gasket are included. The middle part of the box and the top cover is provided with a through hole for the cable harness to pass through, and the periphery of the box and the top cover is provided with a plurality of screw holes. The rubber gasket is arranged between the box and the top cover, and the box and the top cover are fixed by bolts. The current transformer and the battery are arranged in the cavity of the box, and the control mainboard is fixed to the lower side of the top cover.

2. The cable loop flow monitoring apparatus of claim 1, wherein, The battery is used for power supply of the control mainboard, and the control mainboard is used for output of the cable loop current monitored by the current transformer.

3. The cable loop flow monitoring apparatus of claim 1, wherein, The current transformer is composed of two halves that are buckled with each other.

4. The cable loop flow monitoring apparatus of claim 1, wherein, The inner side of the outer wall of the box is provided with a fixing groove for placing the buckling protrusion of the current transformer.

5. A cable loop flow monitoring apparatus according to claim 4, wherein, The lower side of the top cover is provided with at least one supporting column for abutting the current transformer after the top cover is buckled with the box.

6. The circulating current monitoring apparatus according to any one of claims 1 to 5, characterized by The cable loop current monitoring device further comprises a buckle structure for fixing the box on the cable harness.

7. A circulating current monitoring apparatus according to any one of claims 1 to 5, wherein The lower side of the bottom of the box and / or the upper side of the top cover is provided with a threaded connection port, and the rubber connecting column is sleeved outside the threaded connection port.

8. The cable loop flow monitoring apparatus of claim 7, wherein, The metal clamp is sleeved outside the rubber connecting column.

9. The cable loop flow monitoring apparatus of claim 7, wherein, The battery is fixed at the bottom of the cavity of the box, or the battery is arranged between the current transformer and the control mainboard and fixed to the control mainboard.

10. The circulating current monitoring apparatus according to any one of claims 1 to 5, characterized by The battery is a dry battery or a rechargeable battery. In the case of the battery being a rechargeable battery, the current transformer and the battery are circuit-connected, and the current transformer is used to charge the battery after obtaining electric energy. The upper side of the top cover is provided with a photovoltaic module, and the photovoltaic module is circuit-connected with the battery. In the case of the battery being a rechargeable battery, the photovoltaic module is used to charge the battery during operation. The box is an open-close structure in the vertical direction, which is closed after the cable harness is placed in the through hole.

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