Generator carbon brush current and brush holder temperature monitoring system

Abstract

The invention discloses a generator carbon brush current and brush holder temperature monitoring system. The system comprises a signal acquisition module, a two-bus master station and a display module. The signal acquisition module comprises a current sensor, the current sensor is arranged on a brush holder and is used for detecting a carbon brush current signal of a generator, two sides of the brush holder are movably connected with a carbon brush through a gear driving piece, a limiting part for fixing the gear driving piece is arranged in the brush holder, and the limiting part is elastically connected with two side walls in the brush holder; the two-bus master station is connected with a current sensor to read the collected current and temperature; the display module comprises a touch screen and a monitor, the touch screen is used for displaying data collected by the current sensor and generating an alarm signal through a set threshold value, and the monitor is remotely connected with a two-bus master station and used for monitoring data information collected by the two-bus master station; by designing the adjustable carbon brush mounting structure, the stability is enhanced while the adjustment is convenient, and the carbon brush can be monitored.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon brushes, and in particular to a generator carbon brush current and brush holder temperature monitoring system. Background Art

[0002] Currently, large generator sets generally use a brushed excitation system, where the excitation current is introduced through the contact between stationary carbon brushes and high-speed rotating collector rings. As the unit capacity increases, the required excitation current also increases. During long-term operation, the excitation carbon brush current becomes unbalanced, causing individual carbon brushes to overheat. Since graphite, the material used for carbon brushes, has negative temperature characteristics, if not promptly addressed, the overheating will become more severe, leading to carbon brush burnout and even ring fires. For a long time, unplanned downtime caused by ring fires due to improper maintenance of generator excitation carbon brushes has caused significant economic losses to many power plants. Ring fires occur suddenly, are short-lived, and are difficult to address in a timely manner. They often cause burnout of collector rings, brush holders, and carbon brushes, resulting in high repair costs and long maintenance cycles.

[0003] Moreover, the current monitoring of the excitation carbon brushes and the installation of the carbon brushes are mostly traditional, and it is impossible to truly achieve the adjustment of the carbon brush current and the monitoring of the carbon brush current and brush holder temperature. The existing methods are relatively cumbersome. Not only is monitoring difficult, but the carbon brushes are also less flexible, have no adjustability after installation, and have poor stability. Summary of the Invention

[0004] The present invention aims to address at least one of the technical problems existing in the prior art by providing a generator carbon brush current and brush holder temperature monitoring system. This system addresses issues such as the inability of prior art to monitor excitation carbon brushes, the poor stability of conventional carbon brush installation methods, the inability to adjust them after installation, and the difficulty adapting them to various motors.

[0005] An embodiment of the present invention provides a generator carbon brush current and brush holder temperature monitoring system, comprising:

[0006] A signal acquisition module, comprising a current sensor, the current sensor being mounted on a brush holder and configured to detect a current signal from a carbon brush of the generator; the carbon brushes being movably connected to both sides of the brush holder via a gear drive; a limiter being provided within the brush holder to secure the gear drive, the limiter being elastically connected to both side walls within the brush holder;

[0007] A second bus terminal, the second bus terminal being connected to a current sensor and reading the current and temperature collected by the current sensor;

[0008] The display module includes a touch screen and a monitor, and the touch screen and the monitor are respectively connected to the second bus terminal; the touch screen is used to display the data collected by the current sensor and generate an alarm signal through a set threshold; the monitor is remotely connected to the second bus terminal to monitor the data information collected by the second bus terminal.

[0009] Optionally, the brush holder is in a square shell structure, with a wiring port provided on the top thereof, the wiring port being in communication with the interior of the brush holder, and the limiting portion extending from the wiring port into the interior of the brush holder;

[0010] Symmetrical arc plates are provided on both sides of the brush holder, and a carbon brush housing is slidably provided between the symmetrical arc plates. The carbon brush is installed in the carbon brush housing and connected to the compression spring in the carbon brush housing.

[0011] Optionally, an arc groove is provided on the side of the carbon brush housing close to the arc plate, and an arc bar is provided on the arc plate, and the arc bar is embedded in the arc groove and slidably connected;

[0012] A connecting plate is vertically arranged on one side of the carbon brush housing, and an arc-shaped rack is arranged on the connecting plate. The arc-shaped racks on the two carbon brush housings are respectively located on two sides of the brush holder and are respectively engaged with the gear driving member.

[0013] Optionally, the gear drive member includes a rotating rod, a first gear, a second gear and a third gear; the rotating rod passes through the two surfaces corresponding to the two arc-shaped racks on the brush holder, the first gear is fixed to one end of the rotating rod, and the second gear is fixed to the other end of the rotating rod; the third gear is rotatably connected to the surface of the brush holder corresponding to the second gear and meshes with the second gear, and the third gear and the first gear are respectively meshed with the arc-shaped racks on the two carbon brush housings.

[0014] Optionally, the limiting portion extends from the wiring port into the interior of the brush holder and is engaged with a limiting sleeve sleeve mounted on the rotating rod.

[0015] Optionally, the limiting portion includes a locking sleeve, which is a cylindrical structure, and its bottom corresponds to the limiting sleeve; the bottom of the locking sleeve is recessed to form a locking groove, and the two side walls of the locking groove extend gradually toward the top, and the top of the locking groove is provided with a round groove, and the round groove matches the size of the limiting sleeve;

[0016] The outer wall of the limiting sleeve is provided with a plurality of square grooves in a circumferential array, and a clamping strip is vertically provided inside the circular through groove. The clamping strip faces the limiting sleeve and is engaged with the square groove.

[0017] Optionally, the limiting portion also includes a pressure column, a circular groove is provided in the top of the locking sleeve, a first spring is provided at the bottom of the circular groove, and the pressure column extends into the circular groove to connect with the first spring; an electrical rod is provided on the top of the pressure column, and an insulating plug is provided on the top of the electrical rod; the outer wall of the wiring port has symmetrical openings, and the connecting head of the carbon brush is inserted into the opening and connected to the electrical rod.

[0018] Optionally, vertical grooves are symmetrically provided on the outer wall of the locking sleeve, the vertical grooves are connected to the circular groove, horizontal plates are symmetrically provided on the outer wall of the pressure column, and vertical plates are provided on the horizontal plates perpendicularly to the bottom.

[0019] Optionally, the limiting portion also includes a pressure plate, a pair of which are provided and installed inside the brush holder and symmetrically arranged about the locking sleeve; the pressure plate corresponds to the vertical plate, and the pressure plate is connected to the side wall inside the brush holder through a second spring, and a plurality of movable support plates arranged in a vertical array are connected between the pressure plate and the vertical plate.

[0020] Optionally, a fixed plate is vertically arranged on the top of the pressure plate, a threaded tube is arranged on the fixed plate, and the threaded tube extends through the brush holder; a support frame is arranged on the brush holder, a threaded rod is arranged on the support frame, and the bottom of the threaded rod extends into the threaded tube and is threadedly connected to the threaded tube.

[0021] The generator carbon brush current and brush holder temperature monitoring system of the embodiment of the present invention is designed with an adjustable carbon brush mounting structure, which facilitates adjustment while also enhancing stability and enabling monitoring of the carbon brushes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A connection block diagram of a generator carbon brush current and brush holder temperature monitoring system according to an embodiment of the present invention;

[0023] Figure 2 This is the main view of the structure of the brush holder and carbon brush installation connection;

[0024] Figure 3 This is the rear view of the structure connecting the brush holder and the carbon brush;

[0025] Figure 4 This is an exploded diagram of the overall structure of the generator carbon brush current and brush holder temperature monitoring system;

[0026] Figure 5 It is a structural side view of the brush holder;

[0027] Figure 6 It is a structural diagram of the gear drive component and the limiting part;

[0028] Figure 7This is a schematic diagram of the internal structure of the overall structural section of the generator carbon brush current and brush holder temperature monitoring system. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0032] Example 1

[0033] Reference Figure 1 、 2 , which is the first embodiment of the present invention, provides a generator carbon brush current and brush holder temperature monitoring system, which includes a signal acquisition module 100, a two-bus terminal 200 and a display module 300.

[0034] Signal acquisition module 100 includes a current sensor 101, which is used to detect the generator's carbon brush current signal. Current sensor 101 comprises a brush holder and a Hall effect current sensor. The brush holder includes n carbon brushes, where n is 4, 5, or 6. The brush holder is mounted on a brush holder bracket 102. The Hall effect current sensor, such as an Ankerui current Hall effect sensor, is connected to the carbon brushes to detect the generator's carbon brush current signal.

[0035] The second bus terminal 200 is connected to the current sensor 101 to read the current and temperature collected by the current sensor 101.

[0036] In the system, a microprocessor is used to connect to the current sensor 101 and the second bus terminal 200 through two buses respectively. The microprocessor includes an analog-to-digital converter for digitizing the brush holder temperature signal and the carbon brush current signal of the generator to realize the measurement of the carbon brush current data and the brush holder temperature data of the generator.

[0037] The Hall effect current sensor and microprocessor are powered by a polarity conversion circuit and a step-down circuit. The chips and components used in the Hall effect current sensor and microprocessor are all -40°C to +125°C rated components, ensuring normal operation in high-temperature environments.

[0038] The display module 300 includes a touch screen 301 and a monitor 302. The touch screen 301 and the monitor 302 are respectively connected to the second bus terminal 200. The touch screen 301 is used to display the data collected by the current sensor 101 and generate an alarm signal based on a set threshold value. The monitor 302 is remotely connected to the second bus terminal 200 to monitor the data information collected by the second bus terminal 200. Specifically, the second bus terminal 200 has two isolated RS485 interfaces. One RS485 interface is connected to the touch screen 301, and the other RS485 interface is connected to the monitor 302 via a remote transmission interface to achieve remote data transmission. Preferably, the second bus can be used to power the current sensor 101 and transmit data signals, which can greatly reduce the sensor wiring cables and ensure the reliability of signal transmission, avoiding the shortcomings of traditional wired or wireless methods, and is very convenient for on-site inspection and maintenance.

[0039] The monitor 302 is used to centrally monitor the carbon brush current and brush holder temperature data of the generator. The monitor 302 of this embodiment may be a distributed control system (DCS).

[0040] Furthermore, a current sensor 101 is mounted on the brush holder 102 and is used to detect the current signal of the generator's carbon brushes 103. The carbon brushes 103 are movably connected to each other on both sides of the brush holder 102 via gear drive members 104. The carbon brushes 103 are located within a carbon brush housing 102c. The carbon brush housing 102c can be moved relatively away from or closer to the brush holder 102 to adjust the spacing and angle between the two carbon brushes 103. A stopper 400 is provided within the brush holder 102 to secure the gear drive member 104. The stopper 400 is elastically connected to the inner side walls of the brush holder 102.

[0041] Specifically, the installation of the carbon brush 103 in the carbon brush housing 102c adopts the existing structure, and in the prior art, the carbon brush 103 is installed in the carbon brush housing 102c and is connected to the compression spring 102c-1 in the carbon brush housing 102c. The carbon brush housing 102c adopts a sliding connection method so that they can move away from or approach each other. A pair of carbon brush housings 102c are provided, which are located on both sides of the brush holder 102. Therefore, a pair of carbon brushes 103 are also provided, which are respectively located in the two carbon brush housings 102c. The carbon brush 103 is adjusted by adjusting the carbon brush housing 102c.

[0042] Example 2

[0043] Reference Figures 2 to 7 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The brush holder 102 is a square shell structure, and a wiring port 102a is provided on the top. The wiring port 102a is connected to the interior of the brush holder 102. The limiting portion 400 extends from the wiring port 102a into the interior of the brush holder 102. The gear driving member 104 passes through the brush holder 102 horizontally and remains perpendicular to the limiting portion 400. The limiting portion 400 extends into the brush holder 102 and engages with the gear driving member 104.

[0044] The brush holder 102 is provided with symmetrical curved plates 102b on either side, with a space between them. A carbon brush housing 102c slides between the symmetrical curved plates 102b. The carbon brush 103 is mounted within the housing 102c and connected to a compression spring 102c-1 within the housing. Specifically, curved bars 102b-1 are provided on opposite sides of the curved plates 102b. Arc grooves 102c-1 are provided on the sides of the brush housing 102c facing the curved plates 102b. These arc bars 102b-1 slide into the grooves 102c-1 and slide into the grooves.

[0045] Furthermore, a connecting plate 102c-2 is perpendicularly mounted on the side of the carbon brush housing 102c with the arc groove 102c-1, at the end facing away from the brush holder 102. The connecting plates 102c-2 of the two carbon brush housings 102c are located on opposite sides of the housing, extending past the end of the arc plate 102b. An arc-shaped rack 102c-3 is mounted on the connecting plate 102c-2, extending toward the brush holder 102 and having a radius that matches the arc groove 102c-1.

[0046] The two arcuate racks 102c-3 on the carbon brush housings 102c are located on either side of the brush holder 102 and mesh with the gear drive 104. Specifically, the gear drive 104 includes a rotating rod 104a, a first gear 104b, a second gear 104c, and a third gear 104d. The rotating rod 104a passes through the two corresponding sides of the two arcuate racks 102c-3 on the brush holder 102. The first gear 104b is fixed to one end of the rotating rod 104a, and the second gear 104c is fixed to the other end of the rotating rod 104a. The first gear 104b and the second gear 104c are located on either side of the brush holder 102 and correspond to the two arcuate racks 102c-3.

[0047] The third gear 104d is rotatably connected to the side of the brush holder 102 corresponding to the second gear 104c. The first gear 104b directly meshes with one arcuate rack 102c-3, while the second gear 104c meshes with the other arcuate rack 102c-3 via the third gear 104d. Specifically, the gear ratio of the second gear 104c and the third gear 104d is set to be the same as the gear ratio of the arcuate rack 102c-3 meshed with the first gear 104b. This ensures that the rotating rod 104a rotates at the same speed as the two arcuate racks 102c-3 through the corresponding meshing transmission.

[0048] The limiting portion 400 extends from the wiring port 102a into the interior of the brush holder 102 and engages with the limiting sleeve 104a-1 mounted on the rotating rod 104a. Specifically, the limiting portion 400 includes a locking sleeve 401 and a pressure column 402. The locking sleeve 401 and the pressure column 402 are cylindrical structures. The bottom of the locking sleeve 401 corresponds to the limiting sleeve 104a-1. The bottom of the locking sleeve 401 is recessed to form a locking groove 401a. The locking groove 401a is formed by recessing upward from the bottom of the locking sleeve 401. The two side walls of the locking groove 401a gradually approach each other as they extend toward the top, that is, the locking groove 401a tends to contract toward each other. In cross section, the locking groove 401a has a trapezoidal structure, with its upper side being shorter than the bottom side. The top of the locking groove 401a is provided with a circular groove 401b. The circular groove 401b has a circular cross-section that matches the size of the limiting sleeve 104a-1 and is connected to the locking groove 401a. As the locking sleeve 401 is pressed downward, it compresses the limiting sleeve 104a-1 on the rotating rod 104a. Conversely, the limiting sleeve 104a-1 moves upward within the locking slot 401a, gradually reducing the size of the locking slot 401a to compress the limiting sleeve 104a-1. After passing the locking slot 401a, the limiting sleeve 104a-1 falls into the circular groove 401b. The outer wall of the limiting sleeve 104a-1 is provided with a plurality of square grooves A arranged in an array around the circumference. A retaining bar 401b-1 is vertically provided on the interior of the circular groove 401b. The retaining bar 401b-1 faces the limiting sleeve 104a-1 and engages with the square grooves A. After the limiting sleeve 104a-1 falls into the circular groove 401b, the retaining bar 401b-1 engages with the square grooves A, preventing the rotating rod 104a from further rotation.

[0049] Furthermore, the top of the locking sleeve 401 is recessed with a circular groove 401c, and the bottom of the groove 401c is provided with a first spring 401c-1. A pressure post 402 extends into the groove 401c and connects to the first spring 401c-1. A conductive rod 402a is located on the top of the pressure post 402, and an insulating plug 402b is located on the top of the conductive rod 402a. The conductive rod 402a is used to connect to the connector of the carbon brush 103, and the insulating plug 402b is used to seal the top end of the wiring port 102a. The outer wall of the wiring port 102a has a symmetrical opening B, and the connector of the carbon brush 103 passes through the opening B and engages with the conductive rod 402a.

[0050] The outer wall of the locking sleeve 401 is symmetrically provided with vertical grooves 401d, which are connected to the circular groove 401c. The outer wall of the pressure column 402 is symmetrically provided with horizontal plates 402c, which extend out of the vertical grooves 401d and have vertical plates 402d arranged vertically toward the bottom.

[0051] The limiting portion 400 also includes a pressure plate 403. A pair of pressure plates 403 are provided, which are installed inside the brush holder 102 and symmetrically arranged about the locking sleeve 401. The pressure plate 403 corresponds to the vertical plate 402d. The pressure plate 403 is connected to the side wall inside the brush holder 102 through a second spring C. A plurality of movable support plates 403a arranged in a vertical array are connected between the pressure plate 403 and the vertical plate 402d. The length of the movable support plate 403a is longer than the distance between the pressure plate 403 and the vertical plate 402d in the normal state. When the pressure column 402 is not pressed down, the movable support plate 403a is tilted, and the pressure plate 403 can move slightly relatively. After the pressure column 402 is pressed down, the movable support plate 403a presses against the pressure plate 403 to compress the second spring C until the movable support plate 403a is horizontal and vertically presses against the pressure plate 403. The reaction force of the spring on the pressure plate 403 is applied vertically to the vertical plate 402d. The symmetrical vertical plates 402d are all subjected to the reaction force of the spring on the pressure plate 403, which increases the friction force on the pressure column 402 in the circular groove 401c. It should be noted here that the part of the bottom of the pressure column 402 connected to the horizontal plate 402c is made of elastic material, which is slightly deformed by extrusion, thereby squeezing the inner wall of the circular groove 401c to increase the friction force.

[0052] A fixed plate 403b is vertically mounted on top of the pressure plate 403. A threaded tube 403c is mounted on the fixed plate 403b. The threaded tube 403c extends through the brush holder 102. A support frame 102e is mounted on the brush holder 102. A threaded rod 102e-1 is mounted on the support frame 102e. The bottom of the threaded rod 102e-1 extends into the threaded tube 403c and is threadedly connected to the threaded tube 403c. When the release state is reached, rotating the threaded rod 102e-1 causes the threaded tube 403c to rise or fall under the screw drive, causing the pressure plate 403 to move slightly vertically, thereby releasing the horizontal support effect of the movable support plate 403a on the pressure plate 403.

[0053] When connected, the connector of the carbon brush 103 passes through the opening B and is engaged with the conductive rod 402a. When the pressure column 402 is pressed down, the insulating plug 402b is embedded in the wiring port 102a and presses the connector tightly.

[0054] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0055] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0056] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A generator carbon brush current and brush holder temperature monitoring system, characterized in that: include: A signal acquisition module, comprising a current sensor, the current sensor being mounted on a brush holder and configured to detect a current signal from a carbon brush of the generator; the carbon brushes being movably connected to both sides of the brush holder via a gear drive; a limiter being provided within the brush holder to secure the gear drive, the limiter being elastically connected to both side walls within the brush holder; A second bus terminal, the second bus terminal being connected to a current sensor and reading the current and temperature collected by the current sensor; The display module includes a touch screen and a monitor, and the touch screen and the monitor are respectively connected to the second bus terminal; the touch screen is used to display the data collected by the current sensor and generate an alarm signal through a set threshold; the monitor is remotely connected to the second bus terminal to monitor the data information collected by the second bus terminal.

2. The generator carbon brush current and brush holder temperature monitoring system according to claim 1, characterized in that: The brush holder is a square shell structure, with a wiring port provided on the top thereof, the wiring port being in communication with the interior of the brush holder, and the limiting portion extending from the wiring port into the interior of the brush holder; Symmetrical arc plates are provided on both sides of the brush holder, and a carbon brush housing is slidably provided between the symmetrical arc plates. The carbon brush is installed in the carbon brush housing and connected to the compression spring in the carbon brush housing.

3. The generator carbon brush current and brush holder temperature monitoring system according to claim 2, characterized in that: The carbon brush housing is provided with an arc groove on the side close to the arc plate, and the arc plate is provided with an arc bar, which is embedded in the arc groove and slidably connected; A connecting plate is vertically arranged on one side of the carbon brush housing, and an arc-shaped rack is arranged on the connecting plate. The arc-shaped racks on the two carbon brush housings are respectively located on two sides of the brush holder and are respectively engaged with the gear driving member.

4. The generator carbon brush current and brush holder temperature monitoring system according to claim 3, characterized in that: The gear drive component includes a rotating rod, a first gear, a second gear and a third gear; the rotating rod passes through the two surfaces corresponding to the two arc-shaped racks on the brush holder, the first gear is fixed to one end of the rotating rod, and the second gear is fixed to the other end of the rotating rod; the third gear is rotatably connected to the surface of the brush holder corresponding to the second gear and meshes with the second gear, and the third gear and the first gear are respectively meshed with the arc-shaped racks on the two carbon brush housings.

5. The generator carbon brush current and brush holder temperature monitoring system according to claim 4, characterized in that: The limiting portion extends from the wiring port into the interior of the brush holder and is engaged with a limiting sleeve sleeved on the rotating rod.

6. The generator carbon brush current and brush holder temperature monitoring system according to claim 5, characterized in that: The limiting portion includes a locking sleeve, which is a cylindrical structure with its bottom corresponding to the limiting sleeve; the bottom of the locking sleeve is recessed to form a locking groove, and the two side walls of the locking groove gradually extend toward the top, and the top of the locking groove is provided with a round groove, and the round groove matches the size of the limiting sleeve; The outer wall of the limiting sleeve is provided with a plurality of square grooves in a circumferential array, and a clamping strip is vertically provided inside the circular through groove. The clamping strip faces the limiting sleeve and is engaged with the square groove.

7. The generator carbon brush current and brush holder temperature monitoring system according to claim 6, characterized in that: The limiting part also includes a pressure column, a circular groove is recessed on the top of the locking sleeve, a first spring is provided at the bottom of the circular groove, and the pressure column extends into the circular groove to connect with the first spring; an electrical rod is provided on the top of the pressure column, and an insulating plug is provided on the top of the electrical rod; the outer wall of the wiring port has symmetrical openings, and the connecting head of the carbon brush is inserted through the opening and is engaged with the electrical rod.

8. The generator carbon brush current and brush holder temperature monitoring system according to claim 7, characterized in that: The outer wall of the locking sleeve is symmetrically provided with vertical grooves, the vertical grooves are connected to the circular groove, the outer wall of the pressure column is symmetrically provided with horizontal plates, and vertical plates are vertically provided on the horizontal plates toward the bottom.

9. The generator carbon brush current and brush holder temperature monitoring system according to claim 8, characterized in that: The limiting portion also includes a pressure plate, a pair of which are installed inside the brush holder and symmetrically arranged about the locking sleeve; the pressure plate corresponds to the vertical plate, and the pressure plate is connected to the side wall inside the brush holder through a second spring, and a plurality of movable support plates arranged in a vertical array are connected between the pressure plate and the vertical plate.

10. The generator carbon brush current and brush holder temperature monitoring system according to claim 9, characterized in that: A fixing plate is vertically arranged on the top of the pressure plate, a threaded tube is arranged on the fixing plate, and the threaded tube extends through the brush holder; a support frame is arranged on the brush holder, a threaded rod is arranged on the support frame, and the bottom of the threaded rod extends into the threaded tube and is threadedly connected to the threaded tube.

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