Multifunctional intelligent carbon brush handle for generator excitation

Abstract

The utility model discloses a multifunctional intelligent carbon brush handle for generator excitation, which comprises a current acquisition brush handle and an image acquisition assembly, the current acquisition brush handle is mounted on an excitation brush handle frame, and the image acquisition assembly is mounted on the current acquisition brush handle; the current acquisition brush handle comprises a first power supply, a first PCBA board, a connecting port, a current sensor and a current input interface, the first PCBA board is electrically connected with the first power supply and the current input interface, the connecting port is connected with the excitation brush holder frame, and the current input interface, the current sensor and the carbon brush are electrically connected in sequence; the image acquisition assembly comprises a second power supply, a second PCBA board and a dual-light camera. According to the technical scheme of the utility model, on the basis of realizing the function of the brush handle, the length and temperature of the carbon brush and the current passing through the carbon brush can be monitored in real time, and the real-time data can be sent to a management party, so that the working state of the carbon brush can be mastered, and therefore, when overvoltage and other conditions occur in the carbon brush, timely response can be performed, and the safe operation of a generator can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of generators, in particular to a multifunctional intelligent carbon brush handle for generator excitation. Background Art

[0002] The excitation system is an important component in a generator or motor. It is used to provide DC current to the magnetic field coil of the generator or motor, thereby creating or maintaining the magnetic field in the generator or motor and ensuring the stability and quality of the output voltage of the generator or motor. The excitation system includes carbon brushes and an excitation brush holder. The carbon brushes are installed on the excitation brush holder. A wooden handle is provided at the end of the excitation brush holder away from the carbon brushes. The carbon brushes are installed between the fixed part and the rotating part of rotating machinery such as the generator or motor through the excitation brush holder, thereby playing the role of transmitting energy or signals. The carbon brushes serve as sliding contacts for conducting and introducing current. When the generator or motor rotates, they are used to transmit electrical energy to the coil through the commutator, so as to achieve functions such as introducing static charges on the main shaft into the ground through the carbon brushes.

[0003] During operation, carbon brushes are subject to mechanical stress and direct electrical loads, which can easily lead to overvoltage, looseness, misalignment, vibration, overheating, breakage, and spindle oil leakage. This can also increase the contact resistance of the brush current circuit, leading to overheating or uneven heating and cooling of the carbon brush or collector ring surface, affecting the safe operation of the generator. To address this, we propose a new multifunctional intelligent carbon brush handle that can monitor the current, temperature, image, and length of the excitation carbon brushes, analyze the degree of excitation carbon brush degradation, and diagnose and warn potential hazards. Utility Model Content

[0004] The main purpose of this utility model is to propose a multifunctional intelligent carbon brush handle for generator excitation, aiming to solve the technical problem that the existing carbon brush needs to withstand mechanical pressure and directly bear the electrical load, which easily leads to overvoltage, excessive looseness, pressure deviation, jumping, heating, breakage, main shaft oil leakage and the like, and further affects the safe operation of the generator.

[0005] To achieve the above-mentioned purpose, the utility model proposes a multifunctional intelligent carbon brush handle for generator excitation, which includes a current collection brush handle and an image collection component. The current collection brush handle is installed on the excitation brush holder, and the image collection component is installed on the current collection brush handle;

[0006] The current collection brush handle includes a first power supply, a first PCBA board, a connecting port, a current sensor, and a current input interface. The first PCBA board is electrically connected to the first power supply and the current input interface respectively. The connecting port is connected to the excitation brush holder. The current input interface is electrically connected to the output end of the current sensor. The input end of the current sensor is electrically connected to the carbon brush.

[0007] The image acquisition component includes a second power supply, a second PCBA board and a dual-light camera. The second PCBA board is electrically connected to the second power supply and the dual-light camera respectively. The dual-light camera is arranged toward the carbon brush.

[0008] Optionally, the first PCBA board is integrated with a first power management circuit, a current acquisition circuit, a first main control circuit and a first wireless communication circuit;

[0009] The input end of the first power management circuit is electrically connected to the output end of the first power supply, and the output end of the first power management circuit is electrically connected to the current input interface, the current acquisition circuit, the first main control circuit, and the first wireless communication circuit, respectively. The first power management circuit is used to supply power to the current input interface, the current acquisition circuit, the first main control circuit, and the first wireless communication circuit;

[0010] The current acquisition circuit is electrically connected to the first main control circuit and the carbon brush respectively, and is used to obtain current data input by the current input interface;

[0011] The first main control circuit is used to receive, process and store current data collected by the current collection circuit;

[0012] The first wireless communication circuit is used to send the current data and the processing result of the current data by the first main control circuit to the management party.

[0013] Optionally, the current acquisition circuit includes an amplifier, a filter and an A / D converter, the amplifier is used to amplify the current signal input by the current input interface, the filter is used to filter out noise and interference in the current signal, and the A / D converter is used to convert the current signal into a digital signal.

[0014] Optionally, the current input interface adopts an RS485 interface.

[0015] Optionally, the second PCBA board is integrated with a second power management circuit, a second main control circuit and a second wireless communication circuit;

[0016] The input end of the second power management circuit is electrically connected to the output end of the second power supply, and the output end of the second power management circuit is electrically connected to the dual-light camera, the video data interface, the second main control circuit, and the second wireless communication circuit, respectively. The second power management circuit is used to power the dual-light camera, the video data interface, the second main control circuit, and the second wireless communication circuit;

[0017] The dual-light camera is used to collect image data when the carbon brush is working;

[0018] The video data interface is electrically connected to the dual-light camera and the second main control circuit respectively, and the video data interface is used to receive image data collected by the dual-light camera;

[0019] The second main control circuit is used to receive, process and store image data collected by the video data interface;

[0020] The second wireless communication circuit is used to send the image data and the processing result of the image data by the second main control circuit to the management party.

[0021] Optionally, the dual-light camera includes a visible light lens and an infrared thermal imaging lens, the visible light lens is used to measure the length of the carbon brush, and the infrared thermal imaging lens is used to measure the temperature of the carbon brush.

[0022] Optionally, the current collection brush handle further includes a first outer shell, the first power supply, the first PCBA board and the current input interface are all installed in the first outer shell, and the connection port is provided on the first outer shell.

[0023] Optionally, the image acquisition component also includes a second outer shell, the second power supply, the second PCBA board and the dual-light camera are all installed in the second outer shell, and the end of the dual-light camera and the interface of the video data interface are located outside the outer shell.

[0024] The technical solution of the present invention has the following beneficial effects:

[0025] By setting up a current acquisition brush handle and an image acquisition component, on the basis of realizing the brush handle function, the length, temperature and current passing through the carbon brush can be intelligently monitored in real time when the carbon brush is working, and the above real-time data can be sent to the management party in a timely manner through the first wireless communication circuit and the second wireless communication circuit, so that the management party can grasp the working status of the carbon brush, and make timely and correct responses when the carbon brush is over-voltage, too loose, pressure-biased, jumping, heating, broken, or the main shaft leaks oil, etc., to avoid the increase of the contact resistance of the brush current circuit, and the overheating or uneven heating and cooling of the carbon brush or collector ring surface, thereby ensuring the safe operation of the generator or motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1This is a schematic diagram of the overall structure of a multifunctional intelligent carbon brush handle for generator excitation according to one embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the exploded structure of a multifunctional intelligent carbon brush handle for generator excitation according to one embodiment of the utility model;

[0029] Figure 3 This is a circuit principle block diagram of a current collection brush handle of a multifunctional intelligent carbon brush handle for generator excitation according to one embodiment of the utility model;

[0030] Figure 4 This is a circuit schematic diagram of a current input interface of a multifunctional intelligent carbon brush handle for generator excitation according to one embodiment of the present utility model;

[0031] Figure 5 This is a circuit schematic diagram of a current acquisition circuit for a multifunctional intelligent carbon brush handle for generator excitation according to one embodiment of the utility model;

[0032] Figure 6 This is a circuit schematic diagram of a first main control circuit of a multifunctional intelligent carbon brush handle for generator excitation according to one embodiment of the present utility model;

[0033] Figure 7 This is a circuit principle block diagram of an image acquisition component of a multifunctional intelligent carbon brush handle for generator excitation according to one embodiment of the present utility model;

[0034] Figure 8 This is a circuit diagram of a dual-light camera for a multifunctional intelligent carbon brush handle for generator excitation according to one embodiment of the utility model.

[0035] Figure 9 This is a circuit diagram of a video data interface for a multifunctional intelligent carbon brush handle for generator excitation according to one embodiment of the utility model.

[0036] Figure 10 This is a circuit schematic diagram of a second main control circuit of a multifunctional intelligent carbon brush handle for generator excitation according to one embodiment of the utility model.

[0037] Description of the accompanying drawings: current collection brush handle 100, first outer shell 110, first PCBA board 120, first power supply 130, current input interface 140, connection port 150, image collection component 200, second outer shell 210, second PCBA board 220, dual-light camera 230, video data interface 240.

[0038] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0042] The utility model provides a multifunctional intelligent carbon brush handle for generator excitation.

[0043] like Figures 1 to 10 As shown, in one embodiment of the present invention, a multifunctional intelligent carbon brush handle for generator excitation includes a current collection brush handle 100 and an image collection assembly 200. Specifically, the current collection brush handle 100 and the carbon brush are separately mounted on the excitation brush holder, while the image collection assembly 200 is mounted on the current collection brush handle 100. The carbon brush contacts and connects to the rotating part of the generator or motor. Furthermore, the image collection assembly 200 is mounted on the current collection brush handle 100.

[0044] like Figure 1 and 2 As shown, the current collection brush handle 100 includes a first outer shell 110, a first power supply 130, a first PCBA board 120, a connector 150, a current sensor, and a current input interface 140. The first power supply 130, the first PCBA board 120, and the current input interface 140 are all installed in the first outer shell 110. The connector 150 is provided on the first outer shell 110, and the current sensor is located on the excitation brush holder. Specifically, the first PCBA board 120 is electrically connected to the first power supply 130 and the current input interface 140 respectively. The current input interface 140 is electrically connected to the output end of the current sensor, and the input end of the current sensor is electrically connected to the carbon brush. The current sensor is used to collect the current passing through the carbon brush.

[0045] like Figure 3 、4 , 5 and 6, the first power supply 130 management circuit, the current acquisition circuit, the first main control circuit and the first wireless communication circuit are integrated on the first PCBA board 120. Specifically:

[0046] The input end of the first power supply 130 management circuit is electrically connected to the output end of the first power supply 130, and the output end of the first power supply 130 management circuit is electrically connected to the current input interface 140, the current acquisition circuit, the first main control circuit, and the first wireless communication circuit, respectively. The first power supply 130 management circuit is used to supply power to the current input interface 140, the current acquisition circuit, the first main control circuit, and the first wireless communication circuit;

[0047] The current acquisition circuit is electrically connected to the first main control circuit and the carbon brushes. It is used to acquire current data input from the current input interface. The current acquisition circuit includes an amplifier, a filter, and an A / D converter. The amplifier amplifies the current signal input from the current input interface 140, the filter removes noise and interference from the current signal, and the A / D converter converts the current signal into a digital signal. The current input interface 140 uses an RS485 interface.

[0048] The first main control circuit is configured to receive, process, and store current data collected by the current acquisition circuit. Furthermore, a preset application or solution algorithm is embedded in the first main control circuit to perform processing operations such as interpolation, deduplication, calculation, and analysis on the current data. Because these applications and solution algorithms are well-established technologies, they will not be described in detail in this embodiment.

[0049] The first wireless communication circuit is used to transmit current data and the results of the first main control circuit's processing of the current data to the management party. A LoRa wireless communication interface is embedded in the first wireless communication circuit to upload the processed current data to the generator's excitation carbon brush AI edge processor for further processing, thereby further improving the processing results of the current data passing through the carbon brush and enhancing monitoring quality.

[0050] like Figure 1 and 2 As shown, image acquisition assembly 200 includes a second outer shell 210, a second power supply, a second PCBA board 220, and a dual-light camera 230. The second power supply, second PCBA board 220, and dual-light camera 230 are all mounted within second outer shell 210, with the end of dual-light camera 230 and the interface of video data interface 240 located outside the outer shell. Specifically, second PCBA board 220 is electrically connected to the second power supply and dual-light camera 230, respectively, and dual-light camera 230 is positioned toward the carbon brushes.

[0051] like Figure 7 、 8As shown in , 9 and 10 , the second PCBA board 220 is integrated with a second power management circuit, a second main control circuit and a second wireless communication circuit. Specifically:

[0052] The input end of the second power management circuit is electrically connected to the output end of the second power supply, and the output end of the second power management circuit is electrically connected to the dual-light camera 230, the video data interface 240, the second main control circuit, and the second wireless communication circuit, respectively. The second power management circuit is used to power the dual-light camera 230, the video data interface 240, the second main control circuit, and the second wireless communication circuit.

[0053] The dual-light camera 230 is used to capture image data of the carbon brushes during operation. Specifically, it includes a visible light lens and an infrared thermal imaging lens. The visible light lens is equipped with an algorithmic virtual ruler for measuring the length of the carbon brushes. Additionally, the infrared thermal imaging lens uses external thermal radiation to capture images of the carbon brush surface for measuring its temperature.

[0054] The video data interface 240 is electrically connected to the dual-light camera 230 and the second main control circuit respectively, and the video data interface 240 is used to receive the image data collected by the dual-light camera 230;

[0055] The second main control circuit is used to receive, process, and store image data captured by the video data interface 240. Specifically, a preset image processing algorithm is embedded in the second main control circuit to measure, analyze, and calculate the real-time length of the carbon brush captured by the visible light lens, thereby determining the wear of the carbon brush length; and to measure, analyze, and calculate the real-time temperature of the carbon brush captured by the infrared thermal imaging lens, thereby determining the temperature of the carbon brush.

[0056] The second wireless communication circuit is used to send the image data and the processing result of the image data by the second main control circuit to the management party.

[0057] Specifically, the working principle and process of the utility model are as follows:

[0058] By setting up a current acquisition brush handle and an image acquisition component, on the basis of realizing the brush handle function, the length, temperature and current passing through the carbon brush can be intelligently monitored in real time when the carbon brush is working, and the above real-time data can be sent to the management party in a timely manner through the first wireless communication circuit and the second wireless communication circuit, so that the management party can grasp the working status of the carbon brush, and make timely and correct responses when the carbon brush is over-voltage, too loose, pressure-biased, jumping, heating, broken, or the main shaft leaks oil, etc., to avoid the increase of the contact resistance of the brush current circuit, and the overheating or uneven heating and cooling of the carbon brush or collector ring surface, thereby ensuring the safe operation of the generator or motor.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A multifunctional intelligent carbon brush handle for generator excitation, characterized in that: It includes a current collection brush handle and an image collection component, wherein the current collection brush handle is installed on the excitation brush holder, and the image collection component is installed on the current collection brush handle; The current collection brush handle includes a first power supply, a first PCBA board, a connecting port, a current sensor, and a current input interface. The first PCBA board is electrically connected to the first power supply and the current input interface respectively. The connecting port is connected to the excitation brush holder. The current input interface is electrically connected to the output end of the current sensor. The input end of the current sensor is electrically connected to the carbon brush. The image acquisition component includes a second power supply, a second PCBA board and a dual-light camera. The second PCBA board is electrically connected to the second power supply and the dual-light camera respectively. The dual-light camera is arranged toward the carbon brush.

2. The multifunctional intelligent carbon brush handle for generator excitation according to claim 1 is characterized in that: The first PCBA board is integrated with a first power management circuit, a current acquisition circuit, a first main control circuit and a first wireless communication circuit; The input end of the first power management circuit is electrically connected to the output end of the first power supply, and the output end of the first power management circuit is electrically connected to the current input interface, the current acquisition circuit, the first main control circuit, and the first wireless communication circuit, respectively. The first power management circuit is used to supply power to the current input interface, the current acquisition circuit, the first main control circuit, and the first wireless communication circuit; The current acquisition circuit is electrically connected to the first main control circuit and the carbon brush respectively, and is used to obtain current data input by the current input interface; The first main control circuit is used to receive, process and store current data collected by the current collection circuit; The first wireless communication circuit is used to send the current data and the processing result of the current data by the first main control circuit to the management party.

3. The multifunctional intelligent carbon brush handle for generator excitation according to claim 2 is characterized in that: The current acquisition circuit includes an amplifier, a filter and an A / D converter. The amplifier is used to amplify the current signal input by the current input interface, the filter is used to filter out noise and interference in the current signal, and the A / D converter is used to convert the current signal into a digital signal.

4. The multifunctional intelligent carbon brush handle for generator excitation according to claim 2, characterized in that: The current input interface adopts RS485 interface.

5. The multifunctional intelligent carbon brush handle for generator excitation according to claim 1 is characterized in that: The second PCBA board is integrated with a second power management circuit, a second main control circuit and a second wireless communication circuit; The input end of the second power management circuit is electrically connected to the output end of the second power supply, and the output end of the second power management circuit is electrically connected to the dual-light camera, the video data interface, the second main control circuit, and the second wireless communication circuit, respectively. The second power management circuit is used to power the dual-light camera, the video data interface, the second main control circuit, and the second wireless communication circuit; The dual-light camera is used to collect image data when the carbon brush is working; The video data interface is electrically connected to the dual-light camera and the second main control circuit respectively, and the video data interface is used to receive image data collected by the dual-light camera; The second main control circuit is used to receive, process and store image data collected by the video data interface; The second wireless communication circuit is used to send the image data and the processing result of the image data by the second main control circuit to the management party.

6. The multifunctional intelligent carbon brush handle for generator excitation according to claim 1, characterized in that: The dual-light camera includes a visible light lens and an infrared thermal imaging lens. The visible light lens is used to measure the length of the carbon brush, and the infrared thermal imaging lens is used to measure the temperature of the carbon brush.

7. The multifunctional intelligent carbon brush handle for generator excitation according to claim 1 is characterized in that: The current collection brush handle also includes a first outer shell, the first power supply, the first PCBA board and the current input interface are all installed in the first outer shell, and the connection port is arranged on the first outer shell.

8. The multifunctional intelligent carbon brush handle for generator excitation according to claim 1 is characterized in that: The image acquisition component also includes a second outer shell, the second power supply, the second PCBA board and the dual-light camera are all installed in the second outer shell, and the end of the dual-light camera and the interface of the video data interface are located outside the outer shell.

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