A hydro-generator and its carbon brush

Abstract

The present invention discloses a hydro-turbine generator and its carbon brush, which relate to the technical field of generators. The hydro-turbine generator and its carbon brush provided in the present application mainly improve the arrangement of the temperature sensor on the carbon brush body, wherein a receiving space for accommodating the temperature sensor is formed on the carbon brush body, and a limiting structure is combined on the carbon brush body so that the temperature sensor can be firmly installed in the receiving space, thereby avoiding the high-temperature friction condition of the carbon brush body from affecting the normal operation of the temperature sensor, and at the same time ensuring the installation stability of the temperature sensor on the carbon brush body, which is particularly suitable for the application of smart carbon brushes.

Description

Technical Field

[0001] The present invention relates to the technical field of generators, and in particular to a hydro-generator and a carbon brush thereof. Background Art

[0002] The slip ring and carbon brush system of a hydro-turbine generator primarily consists of slip rings and carbon brushes. Its function is to provide current to the rotating generator slip rings, generating excitation current and generating a rotating electromagnetic field. During unit operation, poor contact between the slip rings and carbon brushes can cause uneven current distribution, leading to elevated carbon brush temperatures and even sparking, which can erode the slip ring surface.

[0003] Therefore, some related technical solutions disclose installing temperature sensors on the carbon brush body to monitor the brush body's temperature. However, in these solutions, the temperature sensors are directly exposed on the outer contour of the carbon brush body. This can lead to friction and vibration between the carbon brush body and the slip ring, causing the temperature sensors to easily become detached from the brush body, resulting in distorted detection. Summary of the Invention

[0004] In summary, the technical problem to be solved by the present application is to provide a new hydro-generator and a carbon brush thereof, which can ensure the installation stability of the temperature sensor on the carbon brush body.

[0005] The solution adopted by this application to solve the above technical problems is:

[0006] In a first aspect, the present application provides a carbon brush, comprising:

[0007] A carbon brush body, wherein an accommodating space is formed in the carbon brush body;

[0008] a temperature sensor housed in the accommodating space; and

[0009] A limiting structure is connected to the carbon brush body and limits the temperature sensor within the accommodating space.

[0010] Optionally, in some embodiments of the present application, the carbon brush body has a friction end face and a non-friction end face arranged opposite to each other, and the carbon brush body has a connecting side wall arranged between the friction end face and the non-friction end face, and an annular groove surrounding the connecting side wall is formed on the connecting side wall, and the inner wall of the annular groove is recessed to form the accommodating space, and the limiting structure includes an annular sealing ring, which is sleeved on the carbon brush body and embedded in the annular groove.

[0011] Optionally, in some embodiments of the present application, the limiting structure includes at least two connecting strips that are sequentially connected end to end to form the blocking ring.

[0012] Optionally, in some embodiments of the present application, the accommodating space is formed on the bottom wall of the annular groove, the multiple connecting strips include at least a first connecting strip and a second connecting strip connected to each other, the limiting structure also includes a connecting member, the connecting member passes through the first connecting strip and the second connecting strip, the first connecting strip and the second connecting strip are connected to each other through the connecting member, the first end of the connecting member passes through the first connecting strip and the second connecting strip and abuts against the temperature sensor, and the connecting member can move along its own axial direction to adjust and lock the position of the first end relative to the first connecting strip and the second connecting strip.

[0013] Optionally, in some embodiments of the present application, an external thread is provided on the connecting member, and the connecting member is threadedly connected to the first connecting bar and the second connecting bar.

[0014] Optionally, in some embodiments of the present application, the carbon brush body has a friction end face and a non-friction end face arranged opposite to each other, the accommodating space is recessed in the non-friction end face, and the limiting structure includes an elastic portion arranged on the outside of the non-friction end face, and the elastic portion abuts against the temperature sensor so that the temperature sensor abuts against the inner wall of the accommodating space.

[0015] Optionally, in some embodiments of the present application, a first sliding structure is formed on the portion of the carbon brush body that defines the accommodating space, and a second sliding structure that slides with the first sliding structure is formed on the outer contour of the temperature sensor.

[0016] Optionally, in some embodiments of the present application, the temperature sensor includes a passive temperature detection module and a wireless signal transmission module, and the passive temperature detection module is electrically connected to the wireless signal transmission module.

[0017] Optionally, in some embodiments of the present application, the wireless signal transmission module includes an antenna portion, and the antenna portion at least partially extends beyond the outer contour of the carbon brush body.

[0018] In a second aspect, the present application provides a hydro-generator, comprising a collector ring and a carbon brush connected to each other, wherein the carbon brush is the carbon brush as described in the first aspect.

[0019] Due to the adoption of the above technical solution, this application has at least the following beneficial effects:

[0020] The hydro-turbine generator and its carbon brush provided in the present application mainly improve the arrangement of the temperature sensor on the carbon brush body, wherein a receiving space for accommodating the temperature sensor is formed on the carbon brush body, and a limiting structure is combined on the carbon brush body so that the temperature sensor can be firmly installed in the receiving space, thereby avoiding the friction condition of the carbon brush body from affecting the normal operation of the temperature sensor, and at the same time ensuring the installation stability of the temperature sensor on the carbon brush body, which is particularly suitable for the application of smart carbon brushes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only some of the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive work.

[0022] Figure 1 This is a schematic diagram of the positions of the slip ring, carbon brush and brush box in Example 1 provided by the present invention;

[0023] Figure 2 This is a schematic structural diagram of the carbon brush in Example 1 provided by the present invention;

[0024] Figure 3 This is a schematic structural diagram of the annular groove in Example 1 provided by the present invention;

[0025] Figure 4 for Figure 2 Schematic diagram of the cross section at AA in the middle;

[0026] Figure 5 A side view schematic diagram of the carbon brush in Example 2 provided by the present invention;

[0027] Figure 6 This is a schematic top view of the carbon brush in Example 2 provided by the present invention;

[0028] Figure 7 A schematic top view of a carbon brush according to another embodiment of the present invention;

[0029] Description of reference numerals:

[0030] 1-collector ring; 2-carbon brush, 21-carbon brush body, 21a-friction end face, 21b-non-friction end face, 21c-annular groove, 22-accommodating space, 23-temperature sensor, 23a-antenna part, 24-sealing ring, 25a-first connecting strip, 25b-second connecting strip, 26-connecting piece, 27-elastic part, 28-brush braid, 29a-first sliding structure, 29b-second sliding structure, 3-brush box. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a unique orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0033] In the application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the invention. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art can recognize that the invention can be implemented without using these specific details. In other instances, known structures and processes are not described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles disclosed herein.

[0034] Example 1

[0035] See Figure 1 The main body of this embodiment is a hydro-generator, including a collector system, which specifically includes a collector ring 1, a carbon brush 2 and a brush box 3. The carbon brush 2 can be slidably assembled in the brush box 3, and one end thereof is in contact with the collector ring 1.

[0036] See further Figure 2 、 Figure 3 and Figure 4 In this embodiment, the carbon brush 2 includes:

[0037] A carbon brush body 21, wherein an accommodating space 22 is formed in the carbon brush body 21;

[0038] a temperature sensor 23 , the temperature sensor 23 being received in the accommodating space 22 ; and

[0039] The limiting structure is connected to the carbon brush body 21 and limits the temperature sensor 23 to the accommodating space 22 .

[0040] The carbon brush body 21 is the portion of the carbon brush 2 that contacts the slip ring 1 and forms a conductive connection, and the temperature sensor 23 is used to detect the temperature of the carbon brush body 21 and feed it back to the control unit to establish temperature monitoring of the carbon brush body 21. The limiting structure is mainly connected to the carbon brush body 21 to limit the temperature sensor 23 so that the temperature sensor 23 can be stably located in the accommodating space 22.

[0041] The carbon brush 2 provided in this embodiment primarily improves the arrangement of the temperature sensor 23 on the carbon brush body 21. Specifically, a housing space 22 for accommodating the temperature sensor 23 is formed on the carbon brush body 21. The temperature sensor 23 is directly housed and disposed within the housing space 22, so that it no longer protrudes from the outer contour of the carbon brush body 21. This reduces the impact of high-temperature friction conditions on the normal operation of the temperature sensor 23 caused by the carbon brush body 21. Furthermore, a limiting structure is incorporated into the carbon brush body 21 to ensure that the temperature sensor 23 is securely mounted within the housing space 22, ensuring the stable installation of the temperature sensor 23 on the carbon brush body 21. This makes it particularly suitable for smart carbon brush applications.

[0042] It should be noted that this application does not impose any additional restrictions on the location of the accommodating space 22. Figure 1 and Figure 3 In this embodiment, the accommodation space 22 is located near the end of the carbon brush body 21 facing away from the slip ring 1. The position of the accommodation space 22 may be modified without affecting the purpose of the invention, and this application does not impose any specific restrictions. The ideal arrangement is that the accommodation space 22 is positioned on the carbon brush body 21 such that, when the entire carbon brush body 21 is extremely worn (before replacement), the retaining structure does not enter the brush holder of the brush box 3.

[0043] It should also be noted that this application does not specifically limit the form of the temperature sensor 23. Implementers can select the specific structure and form of the temperature sensor 23 based on their needs. For example, in another embodiment, the temperature sensor 23 is specifically an active temperature sensor 23, and the active temperature sensor 23 is electrically connected to the control unit via an external wiring extending to the carbon brush body 21. However, for the above technical solution, providing power to the temperature sensor 23 and achieving signal transmission by connecting to the external wiring requires consideration of derivative issues such as power supply and wiring. In addition, its structure is relatively complex, and the complex operating environment of the carbon brush 2 will place higher requirements on power supply and wiring.

[0044] Accordingly, in this embodiment, the temperature sensor 23 includes a passive temperature detection module and a wireless signal transmission module, and the passive temperature detection module is electrically connected to the wireless signal transmission module. In other words, the temperature sensor 23 used in this embodiment primarily serves as a passive temperature sensor, thereby eliminating the need for external wiring and preventing external wiring and power supply from affecting the normal operation of the carbon brush 2. More specifically, in this embodiment, the wireless signal transmission module is an RFID radio frequency module, which is used to receive the temperature signal detected by the passive temperature detection module and transmit it to the control unit in the form of a radio frequency signal. Implementers may also choose other types of wireless signal transmission modules, and this application does not specifically limit this. It is understood that some technical content regarding passive wireless temperature sensors has been disclosed in the prior art. This embodiment mainly improves the connection and arrangement between the temperature sensor 23 and the carbon brush body 21, and does not involve improvements to the structure and principle of the temperature sensor 23. Therefore, the principle and structure of the passive wireless temperature sensor will not be further described.

[0045] The limiting structure is mainly used to engage the accommodating space 22 to limit the position of the temperature sensor 23. Since the carbon brush body 21 is mainly made of carbon material, it is difficult to directly form a connecting structure compatible with the limiting structure on the carbon brush body 21. This places higher requirements on the connection between the limiting structure and the carbon brush body 21.

[0046] Corresponding to this, please combine Figure 2 、 Figure 3 and Figure 4 In this embodiment, the carbon brush body 21 has a friction end face 21a and a non-friction end face 21b disposed opposite to each other. The carbon brush body 21 has a connecting side wall disposed between the friction end face 21a and the non-friction end face 21b. The connecting side wall is formed with an annular groove 21c surrounding the connecting side wall. The inner wall of the annular groove 21c is recessed to form an accommodating space 22. The limiting structure includes an annular sealing ring 24, which is sleeved on the carbon brush body 21 and embedded in the annular groove 21c.

[0047] Among them, the above-mentioned friction end face 21a refers to the end face of the carbon brush body 21 as a block-shaped component, which is used to contact the slip ring 1. Correspondingly, the non-friction end face 21b refers to the side of the carbon brush body 21 facing away from the friction end face 21a, and the connecting side wall refers to the side wall whose two ends are respectively connected to the friction end face 21a and the non-friction end face 21b.

[0048] This embodiment primarily defines an annular groove 21c, requiring relatively low machining requirements, on the carbon brush body 21. An accommodating space 22 is machined within the annular groove 21c. The retaining structure includes an annular sealing ring 24, which is directly sleeved onto the carbon brush body 21 and embedded within the annular groove 21c, thereby connecting the carbon brush body 21 and the retaining structure. Compared to other installation methods, the annular groove 21c has lower molding requirements, effectively preventing the accommodating space 22 from significantly affecting the structural strength of the carbon brush body 21, thereby reducing the risk of damage to the carbon brush body 21 during operation.

[0049] In addition, for the above-mentioned annular sealing ring 24, it can be an integral body, but when the limiting structure adopts an integral structure, the limiting structure is difficult to embed within the annular groove 21c, which will cause inconvenience to the installer. This problem is particularly obvious when the limiting structure adopts hard materials such as ceramics and there are a large number of carbon brushes 2 in the system.

[0050] Corresponding to this, please further combine Figure 4 In this embodiment, it also includes at least two connecting strips that are connected end to end in sequence to form a sealing ring 24. That is to say, the sealing ring 24 is mainly composed of multiple connecting strips connected in sequence. By structurally splitting the limiting structure, the difficulty of embedding the sealing ring 24 in the annular groove 21c can be greatly reduced, making it convenient for implementation personnel to carry out maintenance and replacement.

[0051] In addition, implementers may respectively provide a first connecting structure and a second connecting structure that connect and adapt to each other at the ends of the connecting strips to facilitate the connection of the connecting strips into a ring shape. Implementers may select the specific form of the first connecting structure and the second connecting structure based on actual conditions without affecting the purpose of the invention. For example, in another embodiment, the first connecting structure is a latching tooth, and the second connecting structure is a latching notch that is complementary in shape to the latching tooth and that engages and adapts to each other.

[0052] Meanwhile, the accommodating space 22 can be configured to have a complementary shape to the temperature sensor 23 to ensure that the temperature sensor 23 maintains close contact with the inner wall of the accommodating space 22, that is, the carbon brush body 21. However, due to manufacturing limitations, the temperature sensor 23 is generally slightly smaller than the accommodating space 22. This can cause the temperature sensor 23 to wobble within the accommodating space 22, resulting in detection distortion. This problem is particularly prominent when the temperature sensor 23 is a contact temperature sensor.

[0053] Therefore, in order to further ensure the stability of the temperature sensor 23 on the carbon brush body 21 and improve the detection accuracy of the temperature sensor 23, in this embodiment, the accommodating space 22 is formed on the bottom wall of the annular groove 21c, and the multiple connecting strips include at least a first connecting strip 25a and a second connecting strip 25b connected to each other. The limiting structure also includes a connecting member 26, and the connecting member 26 passes through the first connecting strip 25a and the second connecting strip 25b. The first connecting strip 25a and the second connecting strip 25b are connected to each other through the connecting member 26. The first end of the connecting member 26 passes through the first connecting strip 25a and the second connecting strip 25b and abuts against the temperature sensor 23. The connecting member 26 can adjust and lock the position of the first end relative to the first connecting strip 25a and the second connecting strip 25b along its own axial direction.

[0054] Among them, the connecting member 26 can adjust the position of its first end so that the temperature sensor 23 is always pressed by the connecting member 26, so that the temperature sensor 23 is in contact with the inner wall of the accommodating space 22, thereby preventing the temperature sensor 23 from sliding out of the accommodating space 22. At the same time, as described above, the connecting member 26 makes the temperature sensor 23 and the inner wall of the accommodating space 22 in close contact with each other, which can ensure the detection accuracy of the temperature sensor 23 and reduce the risk of detection distortion. More specifically, in this embodiment, an adhesive layer is provided on the outer contour of the above-mentioned temperature sensor 23. During installation, the portion of the temperature sensor 23 provided with the adhesive layer is first brought into contact with the inner wall of the accommodating space 22 to further establish a stable connection between the temperature sensor 23 and the carbon brush body 21.

[0055] In this embodiment, the above-mentioned connecting member 26 is specifically a screw, and the external thread on the screw is threadedly connected to the first connecting bar 25a and the second connecting bar 25b respectively. By the action of screwing the screw relative to the first connecting bar 25a and the second connecting bar 25b, the positional relationship of the first end portion thereof extending outside the first connecting bar 25a and the second connecting bar 25b relative to the first connecting bar 25a and the second connecting bar 25b can be adjusted. Of course, the implementer can also replace the above-mentioned screw by providing other connecting members 26 with external threads, and this application does not make any special restrictions on this. In addition, when it is desired that the first connecting bar 25a and the second connecting bar 25b be connected, the above-mentioned connecting member 26 can also be a structure such as a rivet.

[0056] In this embodiment, the sealing ring 24 is made of an insulating material. Since the carbon brush body 21 generates high temperatures during operation, the sealing ring 24 is preferably made of ceramic. Furthermore, an insulating encapsulation layer may be provided on the exterior of the temperature sensor 23 or the interior wall of the accommodating space 22 to prevent the current flowing through the carbon brush body 21 from affecting the operation of the temperature sensor 23.

[0057] Example 2

[0058] The main body of this embodiment is consistent with that of embodiment 1, both of which are a hydro-generator. The hydro-generator includes a current collecting system, which specifically includes a collector ring 1, a carbon brush 2 and a brush box 3. The carbon brush 2 and the collector ring 1 are connected to each other. Figure 5 and Figure 6 The main difference between this embodiment and embodiment 1 is that the applicable limiting structures are different.

[0059] Among them, in the traditional collector system, an elastic part 27 is set on the outside of the non-friction end face 21b of the carbon brush body 21. The elastic part 27 is used to apply elastic force to the carbon brush body 21, so that the carbon brush body 21 moves toward the collector ring 1 and ensures that the friction end face 21a of the carbon brush body 21 and the collector ring 1 are in close contact.

[0060] Therefore, in this embodiment, the accommodating space 22 is exposed on the non-friction end surface 21b, and the limiting structure includes an elastic portion 27 disposed outside the non-friction end surface 21b, which abuts against the temperature sensor 23. In other words, in this embodiment, the elastic portion 27 used in the traditional method is mainly reused. The elastic portion 27 applies an elastic force to the temperature sensor 23, so that the temperature sensor 23 and the inner wall of the accommodating space 22 are in close contact, preventing the temperature sensor 23 from slipping out of the accommodating space 22 and maintaining close contact between the temperature sensor 23 and the carbon brush body 21, thereby improving the detection accuracy of the temperature sensor 23. At the same time, the carbon brush body 21 is exerted with an elastic force through contact with the temperature sensor 23, thereby maintaining close contact between the carbon brush body 21 and the slip ring 1.

[0061] It should be noted that the carbon brush body 21 is generally provided with a brush braid 28, which is primarily used to establish an electrical connection with the carbon brush body 21. The protruding end of the brush braid 28 generally extends from the non-friction end surface 21b of the carbon brush body 21. Therefore, when the accommodating space 22 is exposed on the non-friction end surface 21b, implementers need to adjust the position of the accommodating space 22 to avoid the brush braid 28, thereby preventing interference with the temperature sensor 23.

[0062] Regarding the elastic portion 27, the specific form of the elastic portion 27 may be selected by the implementer based on actual circumstances, and this application does not impose any particular restrictions thereon. More specifically, in this embodiment, the elastic portion 27 is a coil spring, one end of which abuts the temperature sensor 23. In another embodiment, the elastic portion 27 is a compression spring, one end of which abuts the temperature sensor 23.

[0063] In addition, in order to facilitate the connection between the carbon brush body 21 and the temperature sensor 23, in this embodiment, a first sliding structure 29a is formed on the portion of the carbon brush body 21 that defines the accommodating space 22, and a second sliding structure 29b that slides with the first sliding structure 29a is formed on the outer contour of the temperature sensor 23. The first sliding structure 29a and the second sliding structure 29b can be any sliding structure that slides with each other. For example, Figure 6 As shown in FIG, in this embodiment, the first sliding structure 29a is a dovetail block, and the second sliding structure 29b is a dovetail groove. For another example, Figure 7 As shown in FIG, in another embodiment, the first sliding structure 29a is a T-shaped block and the second sliding structure 29b is a T-shaped slot. The implementer can select the specific one according to their own needs, and this application does not make any special restrictions on this.

[0064] It is worth noting that in this embodiment, the RF module included in the temperature sensor 23 includes an antenna portion 23a. As shown in this embodiment, implementers can configure the antenna portion 23a to extend beyond the outer contour of the carbon brush body 21 to prevent the carbon brush body 21 from affecting the signal transmission of the RF module. Ideally, the antenna portion 23a is configured to extend beyond the brush box 3.

[0065] The basic concepts have been described above. It will be apparent to those skilled in the art that the detailed disclosure above is merely illustrative and does not limit the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to the present application. Such modifications, improvements, and amendments are suggested in the present application and remain within the spirit and scope of the exemplary embodiments of the present application.

[0066] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0067] Similarly, it should be noted that, in order to simplify the presentation of this application and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this application sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single embodiment disclosed above.

[0068] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values ​​are as accurate as possible within the feasible range.

[0069] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, and documents, cited in this application is hereby incorporated by reference in its entirety, except for any application history that is inconsistent with or conflicts with this application, and any document (currently or subsequently appended to this application) that limits the broadest scope of the claims of this application. It should be noted that if the descriptions, definitions, and / or terminology used in the accompanying materials are inconsistent with or conflict with the content of this application, the descriptions, definitions, and / or terminology used in this application will control.

Claims

1. A carbon brush, characterized in that: include: A carbon brush body, wherein an accommodating space is formed in the carbon brush body; a temperature sensor, the temperature sensor being accommodated in the accommodating space; as well as a limiting structure, the limiting structure being connected to the carbon brush body and limiting the temperature sensor within the accommodating space; The carbon brush body has a friction end face and a non-friction end face arranged opposite to each other, and the carbon brush body has a connecting side wall arranged between the friction end face and the non-friction end face, and an annular groove surrounding the connecting side wall is formed on the connecting side wall, and the inner wall of the annular groove is recessed to form the accommodating space, and the limiting structure includes an annular blocking ring, which is sleeved on the carbon brush body and embedded in the annular groove; the limiting structure includes at least two connecting bars connected end to end to form the blocking ring; The accommodating space is formed on the bottom wall of the annular groove, the plurality of connecting bars include at least a first connecting bar and a second connecting bar connected to each other, the limiting structure further includes a connecting member, the connecting member passes through the first connecting bar and the second connecting bar, the first connecting bar and the second connecting bar are connected to each other through the connecting member, a first end portion of the connecting member passes through the first connecting bar and the second connecting bar and abuts against the temperature sensor, and the connecting member is movable along its own axial direction to adjust and lock the position of the first end portion relative to the first connecting bar and the second connecting bar; The carbon brush body has a friction end face and a non-friction end face arranged opposite to each other, the accommodating space is recessed in the non-friction end face, the limiting structure includes an elastic portion arranged on the outside of the non-friction end face, and the elastic portion abuts against the temperature sensor to make the temperature sensor abut against the inner wall of the accommodating space.

2. The carbon brush according to claim 1, wherein: The connecting piece is provided with an external thread, and the connecting piece is threadedly connected to the first connecting bar and the second connecting bar.

3. The carbon brush according to claim 1, wherein: A first sliding structure is formed on the portion of the carbon brush body that defines the accommodating space, and a second sliding structure that is slidably matched with the first sliding structure is formed on the outer contour of the temperature sensor.

4. The carbon brush according to any one of claims 1 to 3, characterized in that: The temperature sensor includes a passive temperature detection module and a wireless signal transmission module, and the passive temperature detection module is electrically connected to the wireless signal transmission module.

5. The carbon brush according to claim 4, wherein: The wireless signal transmission module includes an antenna portion, and the antenna portion at least partially extends beyond the outer contour of the carbon brush body.

6. A hydro-generator comprising a collector ring and carbon brushes connected to each other, characterized in that: The carbon brush is the carbon brush according to any one of claims 1 to 5.

Images