A collector ring dust removal system for a hydro-generator set

Abstract

The present invention provides a collector ring dust removal system for a hydro-turbine generator set. The system includes: a processing and analysis module that acquires the unit operation data in real time, and based on the unit operation data, confirms the collection instructions and sends them to each data collection module; multiple data collection modules are arranged along the circumference of the collector ring, and the data collection module collects the carbon powder accumulation image at the carbon brush according to the collection instructions, and sends the carbon powder accumulation image to the processing and analysis module; the processing and analysis module confirms the dust removal instruction based on the carbon powder accumulation image and sends it to the dust removal module; the dust removal module blows the carbon powder to the dust collection module according to the dust removal instruction; the dust collection module is used to collect carbon powder, and after each dust removal, the storage data of the carbon powder is obtained and sent to the processing and analysis module; the processing and analysis module generates an alarm signal when the storage data exceeds the set threshold and sends it to the operation and maintenance terminal. The system solves the technical problem in the prior art that it is difficult to complete the collector ring cleaning work in a timely and accurate manner during manual inspection of the collector ring.

Description

Technical Field

[0001] The present invention relates to the technical field of generator dust removal, in particular to a collector ring dust removal system for a hydro-generator set. Background Art

[0002] The generator set's rotor excitation uses graphite brushes to conduct the excitation current. As the rotor rotates, friction with the brushes produces fine carbon dust. This fine carbon dust accumulates on both sides of the brush holder on the slip rings. Over time, this accumulation can degrade the insulation between the positive and negative excitation poles of the generator, endangering the normal operation of the generator set. After the generator has been running for a period of time, inspectors observe the accumulated carbon dust on the slip rings during inspections. When the accumulated carbon dust reaches a certain level, a slip ring cleaning work order is issued, and cleaning personnel are arranged to clean the carbon dust from the slip rings during shutdown.

[0003] However, because the slip rings have a large number of carbon brushes and are arranged circumferentially along the generator shaft, inspectors can only observe a limited range of the slip rings through a single observation hole outside the generator hood during inspections. They must walk around the hood and observe the entire slip ring area through multiple observation holes to comprehensively determine whether cleaning is necessary. Manual inspections are prone to missed inspections and inaccurate judgments due to work experience, resulting in slip rings not being cleaned in a timely manner. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a collector ring dust removal system for a hydro-turbine generator set, which solves the technical problem in the prior art that manual inspection of collector rings is difficult to complete the collector ring cleaning work in a timely and accurate manner.

[0005] According to the present invention, a collector ring dust removal system for a hydro-generator set includes:

[0006] Multiple data acquisition modules, dust removal modules, processing and analysis modules, and dust collection modules;

[0007] The processing and analysis module obtains the unit operation data in real time, and based on the unit operation data, confirms the collection instructions and sends them to each data collection module;

[0008] Multiple data acquisition modules are arranged along the circumference of the collector ring. Each data acquisition module collects an image of carbon powder accumulation at the carbon brush according to an acquisition instruction and sends the image of carbon powder accumulation to the processing and analysis module.

[0009] The processing and analysis module confirms the dust removal instruction based on the toner accumulation images uploaded by the multiple data acquisition modules and sends it to the dust removal module;

[0010] The dust removal module blows the carbon powder to the dust collection module according to the dust removal instruction;

[0011] The dust collection module is used to collect carbon powder, and after each dust removal is completed, the stored data of the carbon powder is obtained and sent to the processing and analysis module;

[0012] When the stored data exceeds the set threshold, the processing and analysis module generates an alarm signal and sends it to the operation and maintenance terminal.

[0013] Furthermore, the unit operation data includes a generator load curve; the processing and analysis module confirms the collection instruction based on the generator unit operation data, including:

[0014] Obtain the generator load curve from the end time of the last dust removal event to the current time as a cumulative curve;

[0015] obtaining the area of a graph enclosed by the cumulative curve and the first set load straight line as first reference data;

[0016] obtaining an area of an image enclosed by the cumulative curve, the first set load straight line, and the second set load straight line as second reference data;

[0017] obtaining the area of an image enclosed by the cumulative curve, the second set load straight line, and the zero load straight line as third reference data;

[0018] confirming estimated cumulative data based on the first reference data, the second reference data, and the third reference data;

[0019] When the estimated cumulative data is greater than the set cumulative value, a collection instruction is generated.

[0020] Furthermore, the multiple data acquisition modules each include: a camera and a microprocessor. The microprocessor receives an acquisition instruction and controls the camera to obtain toner accumulation images of several preset camera positions according to the acquisition instruction. The microprocessor sends the toner accumulation images to the processing and analysis module.

[0021] Furthermore, the processing and analysis module confirms the dust removal instruction based on the toner accumulation images uploaded by the multiple data acquisition modules and sends it to the dust removal module, including:

[0022] Marking a carbon brush frame for each carbon brush in the toner accumulation image, intercepting a carbon brush image in the toner accumulation image according to the range of the carbon brush frame and marking the carbon brush number;

[0023] Acquire multiple carbon brush images corresponding to each carbon brush according to the carbon brush number;

[0024] Determining the volume of a carbon powder pile at the carbon brush based on multiple carbon brush images corresponding to the same carbon brush;

[0025] Obtain the total amount of toner based on the volume of toner pile at each carbon brush;

[0026] When the volume of any toner pile among the multiple toner piles exceeds the set toner volume, or the total amount of toner exceeds the set toner amount, a dust removal instruction is generated.

[0027] Furthermore, based on multiple carbon brush images corresponding to the same carbon brush, determining the volume of the carbon powder pile at the carbon brush includes:

[0028] Process each carbon brush image through an edge recognition algorithm to obtain a carbon brush edge image;

[0029] Based on multiple carbon brush edge images on each side of the carbon brush, confirm the edge range of the carbon powder pile on each side of the carbon brush;

[0030] Based on the edge range of the carbon powder pile on each side of the carbon brush, determine the volume of the carbon powder pile on each side;

[0031] Pile the carbon powder on both sides in small amounts to confirm the volume of the carbon powder pile at the carbon brush.

[0032] Further, based on a plurality of carbon brush edge images on each side of the carbon brush, the edge range of the carbon powder pile on each side of the carbon brush is confirmed;

[0033] Based on a carbon powder pile in any carbon brush edge image, multiple basic edges of the carbon powder pile are identified;

[0034] Based on multiple carbon brush edge images on the same side, the maximum value of each basic edge of the carbon powder pile is determined;

[0035] Based on the maximum value of each basic edge, the edge range of the carbon powder pile is determined.

[0036] Furthermore, based on the edge range of the carbon powder pile on each side of the carbon brush, the volume of the carbon powder pile on each side is determined;

[0037] Based on the edge range of the carbon powder pile, determine the proximal area, distal area, and distance from distal end to proximal end of the carbon powder pile as the pile length;

[0038] Based on the ratio of the proximal area to the distal area, an adjustment factor is determined;

[0039] Determine the volume of the carbon powder small pile based on the pile length, distal area, and adjustment factor.

[0040] Furthermore, the dust removal module includes:

[0041] A blower, used for blowing away carbon powder from the collector ring and carbon brush;

[0042] An induced draft fan, the induced draft fan is used to create a negative pressure to guide the carbon powder blown by the blower to the induced draft fan;

[0043] a first edge processor, configured to receive a dust removal instruction and start the supply fan and the induced draft fan according to the dust removal instruction;

[0044] The sealing sleeve is arranged between the blower and the induced draft fan and is used to seal the collector ring so that the carbon powder is transported to the induced draft fan for discharge.

[0045] Furthermore, the dust collection module includes:

[0046] A dust collecting box is provided between the induced draft fan and the sealing sleeve and is used to collect carbon powder discharged from the sealing sleeve;

[0047] A weighing device is provided at the bottom of the dust box and is used to weigh the dust box;

[0048] The second edge processor is connected to the first edge processor and is used to control the weighing device to weigh the dust box to obtain weight data after the dust removal is completed, and obtain the carbon powder storage data according to the weight data and send it to the processing and analysis module.

[0049] Furthermore, at least one vibration motor is provided on the side of the dust box. Before the weighing device weighs the dust box, the second edge processor controls the at least one vibration motor to vibrate for at least a preset time.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] The present invention sets a processing and analysis module to confirm the collection instructions based on the unit operation data, which reduces the workload of the data collection module and extends the working life of the data collection module. The data collection module obtains the carbon powder accumulation image at the carbon brush, and uses the processing and analysis module to judge the carbon powder accumulation situation at the collector ring to timely generate the dust removal instruction, so that the carbon powder accumulation situation can be judged accurately and timely. The dust removal module is set to execute the dust removal instruction to blow the carbon powder to the dust collection module in time, thus preventing manual cleaning from affecting the normal operation of the unit. The dust collection module collects carbon powder to generate storage data, which is sent to the operation and maintenance terminal through the processing and analysis module. When the storage data exceeds the set threshold, the processing and analysis module generates an alarm signal to remind the operation and maintenance personnel to promptly deal with the carbon powder in the dust collection module. This solves the technical problem in the prior art that it is difficult to complete the collector ring cleaning work in a timely and accurate manner during manual inspection of the collector ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 Schematic diagram of the structure of an embodiment of the present invention.

[0053] Figure 2 FIG. 4 is a schematic diagram of a cumulative curve according to another embodiment of the present invention.

[0054] Figure 3 This is a structural schematic diagram of a dust removal module and a dust collection module according to another embodiment of the present invention.

[0055] Figure 4 This is a partially enlarged schematic diagram of a small pile of carbon powder on one side of a carbon brush according to another embodiment of the present invention. DETAILED DESCRIPTION

[0056] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0057] like Figure 1 As shown, a collector ring dust removal system for a hydro-generator set, the system comprising:

[0058] Multiple data acquisition modules, dust removal modules, processing and analysis modules, and dust collection modules;

[0059] The processing and analysis module obtains the unit operation data in real time, and based on the unit operation data, confirms the collection instructions and sends them to each data collection module;

[0060] Multiple data acquisition modules are arranged along the circumference of the collector ring. Each data acquisition module collects an image of carbon powder accumulation at the carbon brush according to an acquisition instruction and sends the image of carbon powder accumulation to the processing and analysis module.

[0061] The processing and analysis module confirms the dust removal instruction based on the toner accumulation images uploaded by the multiple data acquisition modules and sends it to the dust removal module;

[0062] The dust removal module blows the carbon powder to the dust collection module according to the dust removal instruction;

[0063] The dust collection module is used to collect carbon powder, and after each dust removal is completed, the stored data of the carbon powder is obtained and sent to the processing and analysis module;

[0064] When the stored data exceeds the set threshold, the processing and analysis module generates an alarm signal and sends it to the operation and maintenance terminal.

[0065] The specific implementation process of this embodiment includes:

[0066] In this embodiment, the data acquisition module includes a camera and a microprocessor. The microprocessor receives acquisition instructions and, in accordance with the acquisition instructions, controls the camera to capture images of toner accumulation at several preset camera positions. The microprocessor then transmits the toner accumulation images to the processing and analysis module. The camera is equipped with a flash, and the microprocessor controls the camera lens to activate the flash when capturing toner images. Multiple data acquisition modules are arranged around the periphery of the slip ring and along its circumference. Each data acquisition module has a limited imaging range. Upon receiving the acquisition instructions, each module captures toner accumulation images at several preset camera positions, thereby increasing its imaging range.

[0067] There are multiple carbon brushes in a hydro-turbine generator, and generally the number of carbon brushes in a generator set exceeds 100; multiple carbon brushes are arranged along the circumference of the main shaft, and are fixed on a brush holder. A reset spring is provided on the brush holder to elastically offset the carbon brushes from the collector ring (in this embodiment, the carbon brushes include carbon brushes, brush holders and reset springs). During the operation of the generator set, the generator main shaft drives the collector ring carbon brushes to be continuously worn, thereby generating carbon powder; when too much carbon powder accumulates, it affects the insulation of the collector ring to the ground, reduces the insulation of the stator and rotor windings, and blocks the iron core air duct, causing the temperature rise; therefore, the collector ring needs to be cleaned in time; the accumulation position of carbon powder at the collector ring is relatively fixed, which is related to the arrangement of the collector ring and the carbon brushes, has a certain regularity, and generally accumulates near the carbon brushes.

[0068] In this embodiment, a processing and analysis module is set up to confirm the collection instructions based on the unit operation data, which reduces the workload of the data collection module and extends the working life of the data collection module. The data collection module is used to obtain the carbon powder accumulation image at the carbon brush, and the processing and analysis module is used to determine the carbon powder accumulation situation at the collector ring to timely generate a dust removal instruction, so that the carbon powder accumulation situation can be accurately and timely determined. The dust removal module is set up to execute the dust removal instruction to blow the carbon powder to the dust collection module in a timely manner, thus preventing manual cleaning from affecting the normal operation of the unit. The dust collection module collects carbon powder to generate storage data, which is sent to the operation and maintenance terminal through the processing and analysis module. When the storage data exceeds the set threshold, the processing and analysis module generates an alarm signal to remind the operation and maintenance personnel to promptly deal with the carbon powder in the dust collection module. This solves the technical problem in the prior art that it is difficult to complete the collector ring cleaning work in a timely and accurate manner during manual inspection of the collector ring.

[0069] like Figure 2 As shown, in another embodiment of the present invention, the unit operation data includes a generator load curve; the processing and analysis module confirms the collection instruction based on the generator unit operation data, including:

[0070] Obtain the generator load curve from the end time of the last dust removal event to the current time as a cumulative curve;

[0071] obtaining the area of a graph enclosed by the cumulative curve and the first set load straight line as first reference data;

[0072] obtaining an area of an image enclosed by the cumulative curve, the first set load straight line, and the second set load straight line as second reference data;

[0073] obtaining the area of an image enclosed by the cumulative curve, the second set load straight line, and the zero load straight line as third reference data;

[0074] confirming estimated cumulative data based on the first reference data, the second reference data, and the third reference data;

[0075] When the estimated cumulative data is greater than the set cumulative value, a collection instruction is generated.

[0076] The specific implementation process of this embodiment includes:

[0077] The wear rate of the carbon brush is related to the running time of the turbine generator and the load of the generator; the longer the running time, the faster the carbon brush wears; the greater the load of the generator, the faster the carbon brush wears; therefore, the first set load and the second set load are set; Figure 2 The cumulative curve at time t1 is shown; wherein DY is the first set load; DE is the second set load; the first set load is greater than the second set load; in the cumulative curve, it is represented by the first set load straight line and P=DY and the second set load straight line, that is, P=DE; S1 is the first reference data; S2 is the second reference data; S3 is the third reference data.

[0078] The area of the figure enclosed by the cumulative curve and the first set load straight line is taken as the first reference data; the area of the image enclosed by the cumulative curve, the first set load straight line, and the second set load straight line is obtained as the second reference data; the area of the image enclosed by the cumulative curve, the second set load straight line, and the zero load straight line is taken as the third reference data; wherein the influence of the first reference data, the second reference data, and the third reference data on the carbon brush wear is: the first reference data > the second reference data > the third reference data.

[0079] The estimated cumulative data is obtained by the following formula:

[0080] YGLJ=α*DYC+β*DEC+γ*DSC;

[0081] Among them, YGLJ is the estimated cumulative data; DYC is the first reference data; DEC is the second reference data; DSC is the third reference data; α, β, and γ are all fixed coefficients, and α>β>γ.

[0082] It should be noted that the first reference data, the second reference data, and the third reference data need to be dimensionless before being substituted into the above formula.

[0083] When the estimated cumulative data is greater than the preset cumulative value, it means that the possibility of the collector ring needing dust removal in the next period of time increases and requires special attention. Therefore, at this time, the processing and analysis module generates an acquisition instruction to control the data acquisition module to obtain the carbon powder accumulation image to further accurately judge the actual carbon powder accumulation situation.

[0084] In another embodiment of the present invention, the processing and analysis module confirms the dust removal instruction based on the toner accumulation images uploaded by the multiple data acquisition modules and sends it to the dust removal module, including:

[0085] Marking a carbon brush frame for each carbon brush in the toner accumulation image, intercepting a carbon brush image in the toner accumulation image according to the range of the carbon brush frame and marking the carbon brush number; each carbon brush is correspondingly numbered;

[0086] A plurality of carbon brush images corresponding to each carbon brush are acquired according to the carbon brush number; the plurality of carbon brush images include a plurality of carbon brush images acquired by the same data acquisition module and carbon brush images acquired by multiple data acquisition modules.

[0087] Determining the volume of a carbon powder pile at the carbon brush based on multiple carbon brush images corresponding to the same carbon brush;

[0088] Obtain the total amount of toner based on the volume of toner pile at each carbon brush;

[0089] When the volume of any toner pile among the multiple toner piles exceeds the set toner volume, or the total amount of toner exceeds the set toner amount, a dust removal instruction is generated.

[0090] The specific implementation process of this embodiment includes:

[0091] In this embodiment, because the carbon brushes are arranged along the circumference of the generator, there are errors to varying degrees when the data acquisition module collects images of each carbon brush. Therefore, multiple data acquisition modules are set up and multiple camera positions are preset for each acquisition module to collect multiple carbon brush images of the same carbon brush; because the carbon brushes are worn and produce carbon powder, a large amount of carbon powder is accumulated on both sides of the end of the carbon brush close to the generator shaft; therefore, the total amount of carbon powder can be estimated by obtaining the volume of the small piles of carbon powder on both sides of all carbon brushes.

[0092] In this embodiment, determining the volume of the carbon powder pile at the carbon brush based on multiple carbon brush images corresponding to the same carbon brush includes:

[0093] Process each carbon brush image through an edge recognition algorithm to obtain a carbon brush edge image;

[0094] Based on multiple carbon brush edge images on each side of the carbon brush, confirm the edge range of the carbon powder pile on each side of the carbon brush;

[0095] Based on the edge range of the carbon powder pile on each side of the carbon brush, determine the volume of the carbon powder pile on each side;

[0096] Measure the volume of the carbon powder pile on both sides and confirm the volume of the carbon powder pile at the carbon brush.

[0097] Based on multiple carbon brush edge images on each side of the carbon brush, the edge range of the carbon powder pile on each side of the carbon brush is confirmed, including:

[0098] Based on the carbon powder pile in any carbon brush edge image, multiple basic edges of the carbon powder pile are confirmed; basic edges are several edges that constitute the edge contour of the carbon powder pile; in different carbon brush edge images, the length of the same basic edge is different, so based on multiple carbon brush edge images on the same side, the maximum value of each basic edge of the carbon powder pile is confirmed; based on the maximum value of each basic edge, the edge range of the carbon powder pile is confirmed.

[0099] In this embodiment, based on the edge range of the carbon powder pile on each side of the carbon brush, the volume of the carbon powder pile on each side is determined, including

[0100] Based on the edge range of the carbon powder pile, determine the proximal area, distal area, and distance from distal end to proximal end of the carbon powder pile as the pile length;

[0101] Based on the ratio of the proximal area to the distal area, an adjustment factor is determined;

[0102] Determine the volume of the carbon powder small pile based on the pile length, distal area, and adjustment factor.

[0103] In this embodiment, the proximal end of the carbon powder pile is the side close to the data acquisition module, and the distal end of the carbon powder pile is the side close to the generator shaft. The volume of the carbon powder pile is obtained by the following formula:

[0104] TJ=YDMJ*DC*TJXH;

[0105] Wherein, TJ is the volume of the carbon powder pile; YDMJ is the distal area; TJXH is the adjustment coefficient; when the ratio of the proximal area to the distal area is greater than or equal to the first set ratio, the adjustment coefficient is 1; when the ratio is less than the first set ratio and greater than the second set ratio, the adjustment coefficient is 0.5; when the ratio is less than or equal to the second set ratio, the adjustment coefficient is 0.33.

[0106] like Figure 3 As shown, in another embodiment of the present invention, the dust removal module includes:

[0107] A blower, used for blowing away carbon powder from the collector ring and carbon brush;

[0108] An induced draft fan, the induced draft fan is used to create a negative pressure to guide the carbon powder blown by the blower to the induced draft fan;

[0109] a first edge processor, configured to receive a dust removal instruction and start the supply fan and the induced draft fan according to the dust removal instruction;

[0110] The sealing sleeve is arranged between the blower and the induced draft fan and is used to seal the collector ring so that the carbon powder is transported to the induced draft fan for discharge.

[0111] The specific implementation process of this embodiment includes:

[0112] In this embodiment, the supply and induced draft fans are positioned opposite each other at opposite ends of the sealing sleeve. The supply fan blows air into the sealing sleeve to remove carbon dust from the slip rings. Simultaneously, the induced draft fan draws air from the other end of the sealing sleeve, creating negative pressure to attract the carbon dust. Upon receiving the dust removal command, the first edge processor activates the induced draft fan first, followed by the supply fan.

[0113] A dust collecting module is also provided between the induced draft fan and the sealing sleeve, and the dust collecting module includes:

[0114] A dust collecting box is provided between the induced draft fan and the sealing sleeve and is used to collect carbon powder discharged from the sealing sleeve;

[0115] A weighing device is provided at the bottom of the dust box and is used to weigh the dust box;

[0116] The second edge processor is connected to the first edge processor and is used to control the weighing device to weigh the dust box to obtain weight data after the dust removal is completed, and obtain the carbon powder storage data according to the weight data and send it to the processing and analysis module.

[0117] At least one vibration motor is disposed on the side of the dust box. Before the weighing device weighs the dust box, the second edge processor controls the at least one vibration motor to vibrate for at least a preset duration. The vibration motor can evenly vibrate the toner in the dust box, reducing the gaps between toner particles, thereby allowing the dust box to hold more toner.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. 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 purpose 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 collector ring dust removal system for a hydro-generator set, characterized by: The system comprises: Multiple data acquisition modules, dust removal modules, processing and analysis modules, and dust collection modules; The processing and analysis module obtains the unit operation data in real time, and based on the unit operation data, confirms the collection instructions and sends them to each data collection module; Multiple data acquisition modules are arranged along the circumference of the collector ring. Each data acquisition module collects an image of carbon powder accumulation at the carbon brush according to an acquisition instruction and sends the image of carbon powder accumulation to the processing and analysis module. The processing and analysis module confirms the dust removal instruction based on the toner accumulation images uploaded by the multiple data acquisition modules and sends it to the dust removal module; The dust removal module blows the carbon powder to the dust collection module according to the dust removal instruction; The dust collection module is used to collect carbon powder, and after each dust removal is completed, the stored data of the carbon powder is obtained and sent to the processing and analysis module; When the stored data exceeds the set threshold, the processing and analysis module generates an alarm signal and sends it to the operation and maintenance terminal; The unit operation data includes a generator load curve; the processing and analysis module confirms the collection instruction based on the generator unit operation data, including: Obtain the generator load curve from the end time of the last dust removal event to the current time as a cumulative curve; obtaining the area of a graph enclosed by the cumulative curve and the first set load straight line as first reference data; obtaining an area of an image enclosed by the cumulative curve, the first set load straight line, and the second set load straight line as second reference data; obtaining the area of an image enclosed by the cumulative curve, the second set load straight line, and the zero load straight line as third reference data; confirming estimated cumulative data based on the first reference data, the second reference data, and the third reference data; When the estimated cumulative data is greater than the set cumulative value, a collection instruction is generated.

2. A collector ring dust removal system for a hydro-generator set according to claim 1, characterized in that: The multiple data acquisition modules all include: a camera and a microprocessor. The microprocessor receives an acquisition instruction and controls the camera to obtain toner accumulation images of several preset camera positions according to the acquisition instruction. The microprocessor sends the toner accumulation images to the processing and analysis module.

3. A collector ring dust removal system for a hydro-generator set according to claim 2, characterized in that: The processing and analysis module confirms the dust removal instruction based on the toner accumulation images uploaded by multiple data acquisition modules and sends it to the dust removal module, including: Marking a carbon brush frame for each carbon brush in the toner accumulation image, intercepting a carbon brush image in the toner accumulation image according to the range of the carbon brush frame and marking the carbon brush number; Acquire multiple carbon brush images corresponding to each carbon brush according to the carbon brush number; Determining the volume of a carbon powder pile at the carbon brush based on multiple carbon brush images corresponding to the same carbon brush; Obtain the total amount of toner based on the volume of toner pile at each carbon brush; When the volume of any toner pile among the multiple toner piles exceeds the set toner volume, or the total amount of toner exceeds the set toner amount, a dust removal instruction is generated.

4. The collector ring dust removal system for a hydro-generator set according to claim 1, characterized in that: Determining the volume of a carbon powder pile at a carbon brush based on multiple carbon brush images corresponding to the same carbon brush includes: Process each carbon brush image through an edge recognition algorithm to obtain a carbon brush edge image; Based on multiple carbon brush edge images on each side of the carbon brush, confirm the edge range of the carbon powder pile on each side of the carbon brush; Based on the edge range of the carbon powder pile on each side of the carbon brush, determine the volume of the carbon powder pile on each side; Based on the volume of the small piles of carbon powder on both sides of the end of the carbon brush close to the generator shaft, the volume of the carbon powder pile at the carbon brush is confirmed.

5. The collector ring dust removal system for a hydro-generator set according to claim 4, characterized in that: Based on multiple carbon brush edge images on each side of the carbon brush, confirm the edge range of the carbon powder pile on each side of the carbon brush; Based on a carbon powder pile in any carbon brush edge image, multiple basic edges of the carbon powder pile are identified; Based on multiple carbon brush edge images on the same side, the maximum value of each basic edge of the carbon powder pile is determined; Based on the maximum value of each basic edge, the edge range of the carbon powder pile is determined.

6. A collector ring dust removal system for a hydro-generator set according to claim 5, characterized in that: Based on the edge range of the carbon powder pile on each side of the carbon brush, determine the volume of the carbon powder pile on each side; Based on the edge range of the carbon powder pile, determine the proximal area, distal area, and distance from distal end to proximal end of the carbon powder pile as the pile length; Based on the ratio of the proximal area to the distal area, an adjustment factor is determined; Determine the volume of the carbon powder small pile based on the pile length, distal area, and adjustment factor.

7. The collector ring dust removal system for a hydro-generator set according to claim 1, characterized in that: The dust removal module includes: A blower, used for blowing away carbon powder from the collector ring and carbon brush; An induced draft fan, the induced draft fan is used to create a negative pressure to guide the carbon powder blown by the blower to the induced draft fan; a first edge processor, configured to receive a dust removal instruction and start the supply fan and the induced draft fan according to the dust removal instruction; The sealing sleeve is arranged between the blower and the induced draft fan and is used to seal the collector ring so that the carbon powder is transported to the induced draft fan for discharge.

8. The collector ring dust removal system for a hydro-generator set according to claim 7, characterized in that: The dust collection module comprises: A dust collecting box is provided between the induced draft fan and the sealing sleeve and is used to collect carbon powder discharged from the sealing sleeve; A weighing device is provided at the bottom of the dust box and is used to weigh the dust box; The second edge processor is connected to the first edge processor and is used to control the weighing device to weigh the dust box to obtain weight data after the dust removal is completed, and obtain the carbon powder storage data according to the weight data and send it to the processing and analysis module.

9. The collector ring dust removal system for a hydro-generator set according to claim 8, characterized in that: At least one vibration motor is provided on a side of the dust box. Before the weighing device weighs the dust box, the second edge processor controls the at least one vibration motor to vibrate for at least a preset time.

Images