Current sensor for measuring brush braid of carbon brush of generator

Abstract

The utility model relates to the technical field of motor carbon brush monitoring equipment, in particular to a current sensor for measuring a brush braid of a generator carbon brush, a brush seat is connected with an installation platform, the installation platform is provided with a brush box, the brush box is internally connected with a carbon brush, the brush braid is detachably connected between the carbon brush and the installation platform, and the brush braid is connected with the installation platform. The installation platform is detachably connected with a data switching box, the data switching box is provided with an iron core matched with the brush braid, the iron core is provided with an induction coil, and the data switching box is internally provided with a current detection device connected with the induction coil in series. According to the utility model, the structure is simple, the operation is easy, and the current of the brush braid of the carbon brush can be detected on line in real time when the generator runs.

Description

Technical Field

[0001] This utility model relates to the technical field of motor carbon brush current monitoring equipment, and in particular to a current sensor for measuring the current of generator carbon brush braids. Background Technology

[0002] With the rapid development of the power industry, the requirements for the stability and reliability of generator operation are becoming increasingly stringent. Carbon brushes play a crucial role in generators, and their condition directly affects the performance and lifespan of the generator. In order to ensure the safe and stable operation of generators, real-time monitoring of carbon brush current has become a necessary means.

[0003] Online monitoring of carbon brush current allows for timely detection and handling of anomalies. Monitoring current enables early detection of problems such as imbalance, short circuits, and uneven carbon brush wear in motors or generators, preventing equipment failures. Timely problem detection and resolution prevent excessive wear, extending the lifespan of motors or generators, reducing sudden failures and downtime, and improving equipment reliability and availability. Monitoring current data allows for optimization of equipment operating parameters, ensuring optimal operation, reducing energy consumption, and improving efficiency. Timely detection and handling of current anomalies prevents motors or generators from continuing to operate under high loads or fault conditions, ensuring equipment and personnel safety. Therefore, monitoring the current of generator carbon brush braids is a crucial measure for ensuring the safe and stable operation of equipment. This application provides a current sensor for measuring the current of generator carbon brush braids. Utility Model Content

[0004] To address the shortcomings in the aforementioned background technology, this utility model proposes a current sensor for measuring the current of the carbon brush braid in a generator, thus solving the aforementioned technical problems.

[0005] The technical solution of this utility model is implemented as follows: a current sensor for measuring the current of a generator carbon brush braid, comprising a brush holder and a mounting platform, characterized in that: the mounting platform is connected to the brush holder, a brush box is provided on the mounting platform, a carbon brush is disposed inside the brush box, a brush braid is detachably connected between the carbon brush and the mounting platform, a data adapter box is detachably connected to the mounting platform, an iron core that cooperates with the brush braid is provided on the data adapter box, an induction coil is provided on the iron core, and a current detection device connected in series with the induction coil is provided inside the data adapter box.

[0006] As a preferred embodiment, the iron core includes a fixed single clamp and a movable single clamp. A slot is provided on the data adapter box, and the fixed single clamp and the hinged movable single clamp are fixedly connected in the slot. A rotating tooth is fixedly connected to one end of the movable single clamp. A slide bar is slidably connected inside the data adapter box. A return spring is fixedly connected between one end of the slide bar and the inside of the data adapter box, and a pull handle is provided at the other end. The slide bar is provided with strip teeth that mesh with the rotating tooth.

[0007] As a preferred embodiment, when the fixed single clamp body and the movable single clamp body are engaged, a through hole is formed in the middle to engage with the brush braid.

[0008] As a preferred embodiment, the cross-sectional shape of the perforation is circular, elliptical, or rectangular.

[0009] As a preferred embodiment, the data adapter box has a sealed internal structure, and the data adapter box is made of heat-insulating material and the inner wall is coated with an electromagnetic shielding layer.

[0010] As a preferred embodiment, the maximum opening width of the fixed single clamp and the movable single clamp is greater than the maximum cross-sectional width of the brush braid.

[0011] As a preferred embodiment, the end of the brush braid furthest from the carbon brush is fixedly connected to the mounting platform by bolts.

[0012] The beneficial effects of this utility model are:

[0013] 1. By pulling the handle, the slider overcomes the elastic force of the return spring and slides inside the data adapter box, driving the bar teeth to move. Since the bar teeth mesh with the rotating teeth, the opening and closing of the movable single clamp and the fixed single clamp can be controlled, making it easy to place the brush braid between the movable single clamp and the fixed single clamp. When the handle is released, the movable single clamp and the fixed single clamp close under the action of the return spring, enclosing the brush braid inside for monitoring.

[0014] 2. The data transfer box is equipped with a current detection device connected in series with the induction coil. The current in the induction coil measured by the current detection device can be used to calculate the current through the carbon brush. This utility model has a simple structure and is easy to operate. It can detect the current of the carbon brush braid online in real time when the generator is running.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the fixed single clamp body and the movable single clamp body of this utility model in their closed states;

[0019] Figure 3 This is a structural diagram of the fixed single clamp body and the movable single clamp body of this utility model in their open states;

[0020] In the diagram: 1: Brush holder, 2: Mounting platform, 3: Brush box, 4: Carbon brush, 5: Brush braid, 6: Data adapter box, 7: Fixed single clamp body, 8: Movable single clamp body, 9: Rotating gear, 10: Slide bar, 11: Return spring, 12: Pull handle, 13: Strip tooth, 14: Through hole, 15: Bolt. Detailed Implementation

[0021] The following will refer to the appendix in the embodiments of this utility model. Figure 1-3 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Example 1: A sensor for measuring the current of a generator carbon brush braid, comprising a brush holder 1 and a mounting platform 2, characterized in that: the mounting platform 2 is fixedly connected to the brush holder 1, the mounting platform 2 is located at the upper end of the brush holder 1, the mounting platform 2 is provided with a brush box 3, the brush box 3 is provided with a carbon brush 4 inside, the brush box 3 is provided with mounting holes that mate with the carbon brush 4, a brush braid 5 is detachably connected between the carbon brush 4 and the mounting platform 2, a data adapter box 6 is detachably connected to the mounting platform 2, the data adapter box 6 is fixed to the mounting platform 2 with screws, the data adapter box 6 is provided with an iron core that mates with the brush braid 5, the iron core is provided with an induction coil, the brush braid 5 is inserted at the center of the iron core, the data adapter box 6 is provided with a current detection device connected in series with the induction coil, the current through the carbon brush can be calculated by measuring the current in the induction coil through the current detection device.

[0023] In use, one end of the brush braid 5 is connected to the carbon brush 4 and passes through the iron core. The other end of the brush braid 5 is connected to the mounting platform 2. The carbon brush 4 is inserted into the brush box 3, and the brush braid 5 extends out from the rear end of the carbon brush 4. The end of the brush braid 5 away from the carbon brush 4 is connected to the mounting platform 2. A data adapter box 6 is installed on the top of the mounting platform 2 and behind the carbon brush 4. An iron core is installed on the data adapter box 6 at the position corresponding to the brush braid 5. The brush braid 5 passes through the iron core and is separated from the inner wall of the iron core. An induction coil is wound on the iron core. A current detection device connected in series with the induction coil is installed in the data adapter box 6. The current in the induction coil measured by the current detection device can be used to calculate the current through the carbon brush 4. This utility model has a simple structure and is easy to operate. It can detect the current of the carbon brush 4 and brush braid 5 online in real time when the generator is running.

[0024] As a further embodiment, the iron core includes a fixed single clamp body 7 and a movable single clamp body 8. A slot is provided on the data adapter box 6. The fixed single clamp body 7 and the hinged movable single clamp body 8 are fixedly connected in the slot. A rotating tooth 9 is fixedly connected to one end of the movable single clamp body 8. A slide bar 10 is slidably connected inside the data adapter box 6. A return spring 11 is fixedly connected between one end of the slide bar 10 and the inside of the data adapter box 6. A pull handle 12 is provided at the other end. A strip tooth 13 that meshes with the rotating tooth 9 is provided on the slide bar 10.

[0025] As a further embodiment, when the fixed single clamp body 7 and the movable single clamp body 8 are engaged, a through hole 14 is formed in the middle to engage with the brush braid 5.

[0026] As a further embodiment, the cross-sectional shape of the perforation 14 is circular, elliptical, or rectangular. When the fixed single clamp body 7 and the movable single clamp body 8 are engaged, a perforation 14 is formed in the middle to engage with the brush braid 5. The cross-sectional shape of the perforation 14 can be circular, elliptical, or rectangular. This design can adapt to brush braids 5 with different cross-sectional shapes, improving the compatibility of the current sensor with brush braids 5 of different specifications, and enabling it to be more widely used in monitoring scenarios of various generator carbon brushes 4.

[0027] As a further implementation, the maximum opening width of the fixed single clamp 7 and the movable single clamp 8 is greater than the maximum cross-sectional width of the brush braid 5. This design ensures that the iron core structure can smoothly clamp the brush braid 5, avoiding the situation where the brush braid 5 cannot be placed in the middle of the iron core for current monitoring due to insufficient opening width, and further ensuring the normal operation of the monitoring work.

[0028] In use, the top of the data adapter box 6 is provided with a horizontally extending inverted T-shaped groove. One end of the inverted T-shaped groove is provided with a port communicating with the outside of the data adapter box 6. The iron core includes a fixed single clamp body 7 and a movable single clamp body 8. One end of the fixed single clamp body 7 is fixedly connected to the vertical groove in the inverted T-shaped groove, and one end of the movable single clamp body 8 is rotatably connected to the vertical groove in the inverted T-shaped groove, so that the fixed single clamp body 7 and the movable single clamp body 8 form an opening and closing clamp structure. The opening and closing ends of the fixed single clamp body 7 and the movable single clamp body 8, as well as the formed through hole 14, are all located outside the inverted T-shaped groove. The maximum opening width of the fixed single clamp body 7 and the movable single clamp body 8 is greater than the maximum cross-sectional width of the brush braid 5. A slider is provided in the horizontal groove of the inverted T-shaped groove, which can slide and engage with the horizontal groove of the sliding inverted T-shaped groove along the extension direction of the inverted T-shaped groove. 10. One end of the slider 10 extends through the port and out of the data adapter box 6 and is fixedly connected to a handle. The slider 10 has a strip tooth 13 on the side facing the vertical groove in the inverted T-shaped groove. The movable single clamp 8 has a protruding rotating tooth 9 that meshes with the strip tooth 13 at one end in the inverted T-shaped groove. When the slider 10 moves along the extension direction of the inverted T-shaped groove, the slider 10 can rotate the movable single clamp 8 through the cooperation of the strip tooth 13 and the rotating tooth 9, thereby controlling the opening and closing of the fixed single clamp 7 and the movable single clamp 8. A return spring 11 is provided between the slider 10 and the end of the horizontal groove in the inverted T-shaped groove away from the port. The two ends of the return spring 11 are fixedly connected to the slider 10 and the inverted T-shaped groove, respectively, and can pull the slider 10 to provide spring force for the fixed single clamp 7 and the movable single clamp 8 to close together.

[0029] Example 2: A current sensor for measuring the carbon brush braid of a generator. Based on Example 1, the data transfer box 6 has a sealed internal structure. The data transfer box 6 is made of heat-insulating material and the inner wall is coated with an electromagnetic shielding layer.

[0030] Example 3: A current sensor for measuring the carbon brush braid of a generator. Based on Example 1, the end of the brush braid 5 furthest from the carbon brush 4 is fixedly connected to the mounting platform 2 by bolts.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "on top" can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A current sensor for measuring the current of a generator carbon brush braid, comprising a brush holder (1) and a mounting platform (2), characterized in that: The brush holder (1) is connected to an installation platform (2), and a brush box (3) is installed on the installation platform (2). A carbon brush (4) is installed inside the brush box (3). A brush braid (5) is detachably connected between the carbon brush (4) and the installation platform (2). A data adapter box (6) is detachably connected to the installation platform (2). An iron core that cooperates with the brush braid (5) is provided on the data adapter box (6). An induction coil is provided on the iron core. A current detection device connected in series with the induction coil is provided inside the data adapter box (6).

2. The current sensor for measuring the carbon brush braid of a generator according to claim 1, characterized in that, The iron core includes a fixed single clamp body (7) and a movable single clamp body (8). A slot is provided on the data adapter box (6). The fixed single clamp body (7) and the hinged movable single clamp body (8) are fixedly connected in the slot. A rotating tooth (9) is fixedly connected to one end of the movable single clamp body (8). A slide bar (10) is slidably connected inside the data adapter box (6). A return spring (11) is fixedly connected between one end of the slide bar (10) and the inside of the data adapter box (6). A pull handle (12) is provided at the other end. A strip tooth (13) is provided on the slide bar (10) to mesh with the rotating tooth (9).

3. The current sensor for measuring the carbon brush braid of a generator according to claim 2, characterized in that, When the fixed single clamp body (7) and the movable single clamp body (8) are engaged, a through hole (14) is formed in the middle to engage with the brush braid (5).

4. The current sensor for measuring the current of generator carbon brush braids according to claim 3, characterized in that, The cross-sectional shape of the perforation (14) is circular, elliptical, or rectangular.

5. The current sensor for measuring the current of generator carbon brush braids according to claim 4, characterized in that, The data adapter box (6) has a sealed internal structure. The data adapter box (6) is made of heat-insulating material and the inner wall is coated with an electromagnetic shielding layer.

6. The current sensor for measuring the current of generator carbon brush braids according to claim 5, characterized in that, The maximum opening width of the fixed single clamp body (7) and the movable single clamp body (8) is greater than the maximum cross-sectional width of the brush braid (5).

7. The current sensor for measuring the current of generator carbon brush braids according to any one of claims 1-5, characterized in that, The end of the brush braid (5) away from the carbon brush (4) is fixedly connected to the mounting platform (2) by bolts (15).

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