Energy-taking mutual inductor and fault monitoring device
By designing a retractable support module to make the center of the cable coincide with the center of the power transformer, the problem of low output power of the existing power transformer is solved, and more efficient power transmission is achieved.
Patent Information
- Application Number
- CN202520326191.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing current transformers have an inner diameter larger than the cable diameter, making it difficult for the center line to coincide with the cable core wire, which affects the output power.
Design an energy harvesting transformer comprising a housing, an energy harvesting core, and a retractable support module. The retractable support module's contact plate abuts against the outer periphery of the cable, causing the center of the cable to coincide with the center of the inner ring surface of the housing, thereby enhancing magnetic field coupling.
The output power of the energy harvesting transformer was increased, ensuring stable power transmission.
Smart Images
Figure CN223828338U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of electronic equipment, and particularly relates to a power-taking mutual inductor and a fault monitoring device. BACKGROUND
[0002] The power collection cable line is one of important components of power transmission, and needs to rely on it to complete long-distance power transmission, especially in urban living areas, the power collection cable line has various wiring forms and layout environments.
[0003] In order to ensure the normal work of the power collection cable line, a fault diagnosis device needs to be arranged on the power collection cable line, and the power-taking mutual inductor is needed to take power for the work of the fault diagnosis device. The power-taking mutual inductor is usually in a ring structure and is coupled to take power by being sleeved on the power collection cable.
[0004] Due to the uncertainty of the cable model, the inner diameter of the ring-shaped power-taking mutual inductor is usually greater than the diameter of the cable, so that the center line of the power-taking mutual inductor is difficult to coincide with the cable core when being installed, which causes the power-taking mutual inductor to be unable to collect more magnetic fields, and affects the output power of the power-taking mutual inductor. CONTENT OF THE INVENTION
[0005] Embodiments of the application provide a power-taking mutual inductor, aiming at solving the problem of low output power of the existing power-taking mutual inductor.
[0006] The embodiments of the application are implemented in this way, and provide a power-taking mutual inductor, which comprises:
[0007] A shell having a ring-shaped inner cavity;
[0008] A power-taking iron core arranged in the ring-shaped inner cavity, the power-taking iron core being wound with turns; and
[0009] A plurality of telescopic support modules mounted on the inner ring surface of the shell, the telescopic support modules having touch plates telescopically connected with the inner ring surface of the shell, the plurality of touch plates being used to abut against the outer periphery of the cable, so that the center of the cable coincides with the center of the inner ring surface of the shell.
[0010] Further, the telescopic support module comprises:
[0011] A base fixedly mounted on the inner ring surface of the shell;
[0012] A telescopic seat connected with the base, the telescopic seat being provided with a cavity;
[0013] A spring arranged in the cavity; and
[0014] A shaft body, a first end of the shaft body being connected with the touch plate, and a second end of the shaft body extending into the cavity and being telescopically connected with the telescopic seat.
[0015] Further, the telescopic support module further comprises a connecting bolt fixedly connected with the telescopic base, and the base is provided with a threaded hole matched with the connecting bolt.
[0016] Further, the potting glue is filled between the power-taking iron core and the annular inner cavity.
[0017] Further, the side of the touch plate away from the shell is provided with an antiskid pad.
[0018] Further, the power-taking iron core comprises two half-round iron cores, the shell comprises two half-round ring housings for accommodating the two half-round iron cores, the first ends of the two half-round ring housings are hingedly connected through the folding buckle, and the second ends of the two half-round ring housings are detachably connected through the embedding seat.
[0019] Further, the embedding seat comprises a groove and a protrusion matched with the groove, the groove is arranged on one half-round ring housing, the protrusion is arranged on the other half-round ring housing, and the groove and the protrusion are both provided with an inner threaded hole matched with a screw.
[0020] Further, the embedding seat comprises an embedding block and an embedding groove matched with the embedding block, the embedding block is arranged on one half-round ring housing, and the embedding groove is arranged on the other half-round ring housing.
[0021] Further, the embedding seat further comprises a coil lead pin and a lead hole matched with the coil lead pin, the coil lead pin is electrically connected with the coil on one half-round iron core, and the lead hole is electrically connected with the coil of the other half-round iron core.
[0022] In the second aspect, the application further provides a fault monitoring device, comprising the power-taking transformer as described above.
[0023] The power-taking transformer provided by the application comprises a shell, the shell has an annular inner cavity; a power-taking iron core arranged in the annular inner cavity, the power-taking iron core is wound with a coil; and a plurality of telescopic support modules installed on the inner ring surface of the shell, the telescopic support module has a touch plate telescopically connected with the inner ring surface of the shell, and the plurality of touch plates are used to abut against the outer periphery of the cable, so that the center of the cable coincides with the center of the inner ring surface of the shell. Through the above arrangement, the center of the inner ring surface of the shell, i.e. the center of the power-taking transformer, coincides with the center of the cable, so that the power-taking transformer can couple more magnetic fields, and the output power of the power-taking transformer is improved. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 is a structural schematic diagram of one embodiment of the power-taking transformer provided by the application;
[0025] Figure 2 is a structural schematic diagram of one embodiment of the power-taking transformer provided by the application sleeved on the cable;
[0026] Figure 3 is a structural schematic diagram of a chimeric seat of one embodiment of the power taking transformer provided by the present application;
[0027] Figure 4 is a structural schematic diagram of a telescopic support module of one embodiment of the power taking transformer provided by the present application;
[0028] Figure 5 is Figure 4 is a left view schematic diagram of A1 part in FIG.
[0029] The label explanation: 100 - shell, 110 - folding buckle, 120 - chimeric seat, 121 - groove, 122 - protrusion, 123 - chimeric block, 124 - chimeric slot, 125 - coil needle, 126 - lead hole, 200 - power taking core, 400 - telescopic support module, 410 - touch plate, 420 - base, 430 - telescopic seat, 431 - cavity, 440 - spring, 450 - shaft body, 460 - connecting bolt, 500 - cable, 700 - potting glue, 800 - non-slip pad, 900 - lead-out wire. DETAILED DESCRIPTION
[0030] 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 examples. 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 limiting the present application. In addition, it should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.
[0031] 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 shown in the drawings, which is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0032] 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.
[0033] 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 an 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.
[0034] 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 "below", "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.
[0035] 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 numerical values and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not in itself indicate a 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.
[0036] The power taking transformer provided by the application comprises a shell, the shell has an annular inner cavity; a power taking core arranged in the annular inner cavity, the power taking core is wound with wire turns; and a telescopic supporting module, the telescopic supporting module has a plurality of touch plates telescopically connected with the inner ring surface of the shell, the plurality of touch plates are used to abut against the outer periphery of the cable, so that the center of the cable coincides with the center of the inner ring surface of the shell. Through the above arrangement, the center of the inner ring surface of the shell, i.e. the center of the power taking transformer, coincides with the center of the cable, so that the power taking transformer can couple more magnetic fields and improve the output power of the power taking transformer.
[0037] As Figures 1 to 5 shown, one embodiment of the application provides a power taking transformer, comprising:
[0038] A shell 100, the shell 100 has an annular inner cavity;
[0039] A power-taking iron core 200 arranged in the annular inner cavity, the power-taking iron core 200 is wound with turns of wire; and
[0040] A plurality of telescopic support modules 400 mounted on the inner ring surface of the shell 100, the telescopic support modules 400 have touch plates 410 telescopically connected with the inner ring surface of the shell 100, and the plurality of touch plates 410 are used to abut against the outer periphery of the cable 500, so that the center of the cable 500 coincides with the center of the inner ring surface of the shell 100.
[0041] In implementation, the power-taking transformer set on the cable 500, that is, the current collection cable line, the core of the power-taking transformer is the power-taking iron core 200, and turns of wire are wound on the power-taking iron core 200, so as to realize coupling power taking through the power-taking iron core 200 to induce a magnetic field.
[0042] The power-taking iron core 200 is arranged in the shell 100, and the shell 100 is annular as a whole, and the power-taking iron core 200 is also annular, so that the power-taking iron core 200 can be embedded and mounted in the annular inner cavity of the shell 100.
[0043] As a possible implementation, the power-taking iron core 200 and the annular inner cavity are filled with potting glue 700. In implementation, the potting glue 700 can be acrylic glue, epoxy resin, etc., without limitation.
[0044] In some embodiments, the shell 100 can be made of plastic or other materials with insulation properties, to protect the power-taking iron core 200 and avoid electric leakage and other situations, and to ensure the use safety of the power-taking transformer.
[0045] Since the shell 100 is annular as a whole, that is, the shell 100 has an inner ring surface, the cable 500 is arranged in the inner ring surface of the shell 100, so that the power-taking transformer can be set on the cable 500. The inner ring surface of the shell 100 is provided with a plurality of telescopic support modules 400, and the telescopic support modules 400 have touch plates 410, which are telescopically connected with the inner ring surface of the shell 100, that is, the touch plates 410 can telescopically move relative to the inner ring surface, so as to adjust the diameter enclosed by the plurality of touch plates 410, to adapt to cables 500 of different sizes, and to facilitate reliable installation. When the power-taking transformer is set on the cable 500, the plurality of touch plates 410 abut against the outer periphery of the cable 500, so as to fix the power-taking transformer on the cable 500, so that the center of the cable 500 coincides with the center of the inner ring surface of the shell 100, so that the power-taking transformer can couple more magnetic fields, and the output power of the power-taking transformer is improved.
[0046] In some possible embodiments, the number of the telescopic support modules 400 is greater than or equal to two, for example, the telescopic support modules 400 are provided with 3, 4, 5, 6 or other number, without limitation.
[0047] Further, the telescopic support module 400 comprises:
[0048] a base 420 fixedly installed on the inner ring surface of the shell 100;
[0049] a telescopic seat 430 connected with the base 420, the telescopic seat 430 is provided with a cavity 431;
[0050] a spring 440 arranged in the cavity 431; and
[0051] a shaft body 450, a first end of the shaft body 450 is connected with the touch plate 410, and a second end of the shaft body 450 extends into the cavity 431 and is slidably connected with the telescopic seat 430.
[0052] Since the second end of the shaft body 450 extends into the cavity 431, the shaft body 450 can slide relative to the telescopic seat 430, thereby realizing the relative telescopic movement between the touch plate 410 and the base 420. The spring 440 is arranged in the cavity 431, and the second end of the shaft body 450 is lifted by the elastic deformation force of the spring 440. For example, when the shaft body 450 or the touch plate 410 receives an external force in the direction of the shell 100, the shaft body 450 abuts against the spring 440 and compresses the spring 440, at this time, the plurality of touch plates 410 are in an open state, and the space between the plurality of touch plates 410 is expanded, so that the cable 500 is more easily passed through. When the external force is removed, the shaft body 450 moves in the direction of the center point of the shell 100 under the action of the spring 440, at this time, the plurality of touch plates 410 are in a contracted state, so that the space between the plurality of touch plates 410 is reduced, thereby the touch plates 410 abut against the outer periphery of the cable 500, realizing the installation and fixation between the power taking transformer and the cable 500.
[0053] Further, the telescopic support module 400 further comprises a connecting bolt 460 fixedly connected with the telescopic seat 430, and the base 420 is provided with a threaded hole matched with the connecting bolt 460. Through the above arrangement, the detachable connection between the telescopic seat 430 and the base 420 is realized, and the installation is more convenient.
[0054] Further, the anti-skid pad 800 is arranged on the side of the touch plate 410 away from the shell 100. In practice, the anti-skid pad 800 can be made of anti-skid rubber, anti-skid silica gel or anti-skid plastic, without limitation. The anti-skid pad 800 is arranged to increase the friction between the cable 500 and the touch plate 410, thereby limiting the slidable property of the power-taking transformer, making the power-taking transformer applicable to various cable laying environments such as vertical cable laying and inclined cable laying, avoiding direct contact between the power-taking transformer and the ground, reducing the probability of water immersion of the power-taking transformer, and improving safety and operation stability.
[0055] Further, the power-taking core 200 includes two half circular cores, and the shell 100 includes two half circular ring housings for accommodating the two half circular cores. The first ends of the two half circular ring housings are hinged by the folding buckle 110, and the second ends of the two half circular ring housings are detachably connected by the embedding seat 120.
[0056] By arranging the shell 100 and the power-taking core 200 in a half circular structure, one end of the shell 100 can be opened and closed, facilitating the sleeving on the cable 500.
[0057] Further, the embedding seat 120 includes a recess 121 and a protrusion 122 matched with the recess 121. The recess 121 is arranged on one half circular ring housing, and the protrusion 122 is arranged on the other half circular ring housing. The recess 121 and the protrusion 122 are both provided with an inner threaded hole matched with a screw, which can effectively enhance the closure firmness of the transformer and improve the vibration resistance.
[0058] Further, the embedding seat 120 includes an embedding block 123 and an embedding groove 124 matched with the embedding block 123. The embedding block 123 is arranged on one half circular ring housing, and the embedding groove 124 is arranged on the other half circular ring housing. By embedding the embedding block 123 into the embedding groove 124, the magnetic core interfaces are aligned with each other, reducing energy loss.
[0059] Further, the embedding seat 120 further includes a coil lead needle 125 and a lead hole 126 matched with the coil lead needle 125. The coil lead needle 125 is electrically connected with the coil on one half circular core, and the lead hole 126 is electrically connected with the coil of the other half circular core. By inserting the coil lead needle 125 into the lead hole 126, the coils of the two half power-taking cores 200 are connected as a whole.
[0060] In some possible embodiments, the embedding seat 120 is further provided with a lead-out wire 900, and the coil lead needle 125 is electrically connected with the lead-out wire 900, so that the lead-out wire 900 can be electrically connected with an external circuit.
[0061] In a second aspect, the present application further provides a fault monitoring device, which includes the power-taking transformer as described above.
[0062] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the structure and implementation principle of the fault monitoring device described above can refer to the corresponding structure and implementation principle in the foregoing embodiments, and will not be repeated here.
[0063] The power taking transformer provided in the application comprises a shell 100 having an annular inner cavity; a power taking core 200 arranged in the annular inner cavity, the power taking core 200 being wound with wire turns; and a retractable support module 400, the retractable support module 400 having a plurality of touch plates 410 retractably connected with the inner annular surface of the shell 100, the plurality of touch plates 410 being used to abut against the outer periphery of a cable 500 so that the center of the cable 500 coincides with the center of the inner annular surface of the shell 100. Through the above arrangement, the center of the inner annular surface of the shell 100, i.e. the center of the power taking transformer, coincides with the center of the cable 500, so that the power taking transformer can couple more magnetic fields and improve the output power of the power taking transformer.
[0064] The above is only a preferred embodiment of the application, and is not used to limit the application, and any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.
Claims
1. A power harvesting transformer, characterized in that, include: The outer casing has an annular inner cavity; The energy-harvesting iron core is disposed in the annular inner cavity, and the energy-harvesting iron core is wound with wire turns; as well as A plurality of retractable support modules are mounted on the inner ring surface of the housing. Each retractable support module has a contact plate that is retractably connected to the inner ring surface of the housing. The contact plates are used to abut against the outer periphery of the cable so that the center of the cable coincides with the center of the inner ring surface of the housing.
2. The energy harvesting transformer as described in claim 1, characterized in that, The retractable support module includes: A base that is fixedly installed on the inner ring surface of the outer casing; A telescopic seat connected to the base, wherein the telescopic seat has a cavity inside; A spring disposed within the cavity; and The shaft has a first end connected to the contact plate and a second end extending into the cavity and slidably connected to the telescopic seat.
3. The energy harvesting transformer as described in claim 2, characterized in that, The retractable support module also includes a connecting bolt that is fixedly connected to the telescopic seat, and the base is provided with a threaded hole that mates with the connecting bolt.
4. The energy harvesting transformer as described in claim 1, characterized in that, The space between the energy-harvesting core and the annular inner cavity is filled with potting compound.
5. The energy harvesting transformer as described in claim 1, characterized in that, An anti-slip pad is provided on the side of the touch panel away from the outer casing.
6. The energy harvesting transformer as described in claim 1, characterized in that, The energy-harvesting iron core includes two semi-circular iron cores, and the outer shell includes two semi-circular ring shells for accommodating the two semi-circular iron cores. The first ends of the two semi-circular ring shells are hinged by a folding buckle, and the second ends of the two semi-circular ring shells are detachably connected by a fitting seat.
7. The energy harvesting transformer as described in claim 6, characterized in that, The fitting seat includes a groove and a protrusion that mates with the groove. The groove is disposed on one of the semi-circular housings, and the protrusion is disposed on the other semi-circular housing. Both the groove and the protrusion are provided with internal threaded holes that mate with screws.
8. The energy harvesting transformer as described in claim 6, characterized in that, The fitting seat includes a fitting block and a fitting groove that mates with the fitting block. The fitting block is disposed on one of the semi-circular housings, and the fitting groove is disposed on the other semi-circular housing.
9. The energy harvesting transformer as described in any one of claims 6 to 8, characterized in that, The fitting seat also includes a wire turn pin and a lead hole that mates with the wire turn pin. The wire turn pin is electrically connected to a wire turn on one of the semicircular iron cores, and the lead hole is electrically connected to a wire turn on the other semicircular iron core.
10. A fault monitoring device, characterized in that, Includes the energy harvesting transformer as described in any one of claims 1 to 9.