Regulating device and method for improving discharge particles of a current collection system

Abstract

The application discloses a kind of for improving the regulation and control device and method of collecting system discharge particle, regulation and control device includes discharge particle receiving box, tightly wound solenoid assembly and respectively with pressure sensor, partial discharge detector and current signal generator connection PC machine.PC machine is used to receive the contact pressure uploaded by pressure sensor, and when contact pressure changes, by current signal generator, preset current is introduced into tightly wound solenoid assembly to generate magnetic field, so that the discharge particle in friction disc moves towards the opening direction of discharge particle receiving box;For starting partial discharge detector to detect the discharge frequency of discharge particle in friction disc, when discharge frequency is greater than preset frequency, by current signal generator, the current introduced into tightly wound solenoid assembly is increased to enhance magnetic field, until the discharge frequency detected by partial discharge detector is less than preset frequency.

Description

Technical Field

[0001] This invention relates to safety control technology for train current collection systems, specifically to a device and method for regulating discharge particles in current collection systems. Background Technology

[0002] As a crucial component for the normal operation of a train, the current collection system draws current into the train via the pantograph, and then the current collection system transmits the current to the ground, thus forming a complete current loop. In the current collection system, the stability of the carbon brushes and friction discs directly affects the current collection quality and operating status of the train.

[0003] With the advancement of high-speed trains, the current carrying capacity of trains is gradually increasing, and the train speed is becoming increasingly rapid, which leads to a gradual increase in the wear of carbon brushes and motors. At the same time, because the pressure between the friction discs and carbon brushes on both sides changes dynamically during the train's movement, uneven wear often occurs depending on the direction of travel. This causes unilateral carbon brush wear to intensify and increase the content of wear debris. Furthermore, since these wear debris are charged particles, known as discharge particles, when these discharge particles accumulate to a certain extent, they can cause internal discharge, leading to motor wear and affecting the motor's service life.

[0004] The movement of the discharge particles inside the motor generates electromagnetic interference, which intensifies the vibration of the motor and shortens the replacement cycle of the motor and carbon brushes. This will greatly increase the maintenance cost and cycle of the current collection system, reduce the service life of the carbon brushes and motor, and in severe cases may even cause accidents, resulting in irreparable loss of life and property. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a device and method for improving the regulation of discharge particles in a current collection system, which solves the problem that a large number of discharge particles accumulated inside the train wheel discharge inside the wheel, causing motor wear and reducing the service life of the motor.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0007] In a first aspect, a device for regulating discharge particles in a current collector system is provided, comprising:

[0008] A discharge particle collection box is placed inside a friction disk. It contains a magnet and has an opening for the discharge particles to enter. The opening is located on a side where the discharge particle collection box and the friction disk are tangent to the same direction.

[0009] The tightly wound solenoid assembly is placed inside the wheel and in contact with the friction disc. It is connected to a DC power supply through a current signal generator to generate a magnetic field, causing the discharge particles in the friction disc to move toward the opening of the discharge particle collection box.

[0010] A pressure sensor is placed between the carbon brush and the friction disc to collect the contact pressure between the carbon brush and the friction disc;

[0011] Multiple partial discharge detectors are installed at different positions on the side wall of the friction disk to detect the discharge frequency of discharge particles in the friction disk;

[0012] The PC is connected to a current signal generator, a pressure sensor, and a partial discharge detector. It receives the contact pressure transmitted by the pressure sensor and, when the contact pressure changes, sends a preset current through the current signal generator into the tightly wound solenoid assembly to generate a magnetic field, causing the discharge particles in the friction disk to move toward the opening of the discharge particle collection box.

[0013] This is used to activate multiple partial discharge detectors to detect the discharge frequency of discharge particles in the friction disk. When the maximum discharge frequency is greater than the preset frequency, the current flowing into the tightly wound solenoid assembly is increased through the current signal generator to enhance the magnetic field until the maximum discharge frequency detected by the multiple partial discharge detectors is less than the preset frequency.

[0014] Furthermore, the tightly wound solenoid assembly includes at least one transverse solenoid arranged on the lower surface of the carbon brush and a vertical solenoid arranged perpendicularly to the lower surface of each transverse solenoid. Both the transverse and vertical solenoids are located inside the wheel, and the vertical solenoids are in contact with the friction disc. The transverse solenoids are parallel to the tangent of the circle formed by the multiple carbon brushes. All transverse and vertical solenoids are connected to an independent DC power supply through a current signal generator.

[0015] The PC also includes two current signal generators that control current to flow into the horizontal solenoid and the vertical solenoid respectively, so that the horizontal solenoid generates a magnetic field that causes the discharge particles to move from the carbon brush to the bottom surface of the friction disk, and the vertical solenoid generates a magnetic field that causes the discharge particles to move towards the opening of the discharge particle collection box.

[0016] Furthermore, the surface of the transverse solenoid is coated with insulating varnish, and the vertical solenoid is disposed inside a shielding cover.

[0017] Furthermore, the device for regulating the discharge particles in the current collection system also includes a first charge sensor installed inside the friction disk and connected to a PC. When the discharge frequency is greater than a preset frequency, the sensor collects the charge of the discharge particles inside the friction disk. Based on the charge of the discharge particles, the PC calculates the magnetic field strength generated in the horizontal and vertical solenoids, respectively, and calculates the current flowing through the horizontal and vertical solenoids, respectively, based on the magnetic field strength of the horizontal and vertical solenoids.

[0018] Furthermore, the calculation methods for the magnetic field strength and current in the transverse solenoid and the vertical solenoid are the same;

[0019] The methods for calculating the magnetic field strength generated by the transverse solenoid based on the charge of the discharged particles, and then calculating the current flowing through the transverse solenoid based on the magnetic field strength, include:

[0020] A1. Determine the number of discharge particles based on the charge of the discharge particles and the charge of a single discharge particle;

[0021] A2. Determine the total mass of all discharged particles based on the number of discharged particles and the mass of each particle;

[0022] A3. Based on the charge and total mass of the discharged particles, calculate the force generated by the discharged particles under the action of the carbon brush:

[0023]

[0024] , ,

[0025] , ,

[0026] Where F is the force; , and These represent the Lorentz force, centripetal force, and gravity acting on the discharged particles, respectively. and , respectively, represent the air resistance and electric force experienced by the discharge particle; q is the charge of the discharge particle; E and E represent the magnetic field strength and electric field strength generated by the current flowing through the carbon brush, respectively; v is the magnetic field strength of the discharge particle. The velocity under the action; m is the total mass of the discharge particles; C is the air resistance; ρ is the air density; S is the windward volume of the discharge particles; g is the acceleration due to gravity; r1 is the radius of the circle formed by all the carbon brushes;

[0027] A4. Calculate the magnetic field strength generated by the transverse solenoid based on the force F exerted by the discharged particles:

[0028]

[0029] in, The magnetic field strength generated by the transverse solenoid;

[0030] A5. Based on magnetic field strength Calculate the current I flowing through the transverse solenoid:

[0031]

[0032] in, r1 is the permeability in vacuum; r2 is the distance between the magnetic field generated by the tightly wound solenoid assembly and the current generated in the carbon brush.

[0033] Furthermore, the discharge particle storage box is placed on the circumference of a circle formed by multiple carbon brushes, and its two sides pass through the tangent.

[0034] Furthermore, the device for regulating discharge particles in the current collection system also includes a second charge sensor installed in the discharge particle collection box and connected to a PC. This sensor is used to collect the charge of the discharge particles collected in the discharge particle collection box. When the charge of the collected discharge particles is greater than a preset charge, the PC notifies the management personnel to clean the discharge particle collection box.

[0035] Furthermore, the pressure sensor is a Honeywell PX2, the partial discharge detector is a Hikvision PPM2000, and the first charge sensor is a Honeywell Hall effect sensor.

[0036] Secondly, a control method for a device for regulating discharge particles in a current collector system is provided, comprising the steps of:

[0037] S1. Receives the contact pressure uploaded by the pressure sensor. When the contact pressure changes, it indicates that the train has started. Then, the current signal generator and multiple partial discharge detectors are turned on.

[0038] S2. The control current signal generator passes a preset current into the horizontal and vertical tightly wound solenoids to generate a magnetic field, causing the discharge particles in the friction disk to move toward the opening of the discharge particle collection box.

[0039] S3. Receive the discharge frequencies of discharge particles in the friction disk detected by multiple partial discharge detectors, and select the maximum discharge frequency among them.

[0040] S4. Determine whether the maximum discharge frequency is greater than the preset frequency. If yes, proceed to step S5; otherwise, return to step S3.

[0041] S5. Control the current signal generator to increase the current flowing into the horizontal and vertical tightly wound solenoids respectively to enhance the magnetic field, and then return to step S3 until the maximum discharge frequency is less than or equal to the preset frequency.

[0042] Furthermore, when a first charge sensor is installed inside the friction disk, the PC calculates the magnetic field strength generated in the transverse solenoid and the vertical solenoid based on the charge of the discharged particles, and calculates the current flowing into the transverse solenoid and the vertical solenoid based on the magnetic field strength of the transverse solenoid and the vertical solenoid, respectively.

[0043] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0044] 1) This solution uses a tightly wound solenoid assembly to detect changes in the pressure sensor readings to determine train movement. At this point, the PC sends a command to the current signal generator to control the current of the tightly wound solenoid assembly. The resulting magnetic field strength controls the carbon brush discharge particles to move in a circular motion inside the wheel. The moving particles are then captured by the magnet inside the discharge particle collection box, thereby reducing potential electromagnetic interference and extending the motor's lifespan.

[0045] The magnet in the discharge particle collection box can attract the discharge particles that enter, preventing them from overflowing during the rotation of the wheel.

[0046] 2) This solution uses a first charge sensor installed inside the friction disc to determine the amount of charge on the particles driven by the friction disc. Combined with the frequency of partial discharge detected by the partial discharge detector, the magnetic field strength required to be generated in the transverse and vertical solenoids can be calculated relatively accurately. This allows for the determination of the current magnitude passed into the transverse and vertical solenoids through the current signal generator. This controls the discharge particles to enter the discharge particle collection box, thereby slowing down the discharge frequency and retaining as many of them as possible in the discharge particle collection box, thus controlling the distribution of discharge particles inside the wheel.

[0047] 3) The purpose of placing multiple partial discharge detectors inside the wheel is to compare the maximum discharge frequency generated by partial discharge with the threshold set by the PC, thereby controlling the magnitude of the current signal generated by the current signal generator, changing the magnetic field magnitude, controlling the trajectory of the discharge particles, and collecting the discharge particles into the discharge particle collection box by controlling the directional movement of the discharge particles, thereby reducing the number of free discharge particles and controlling the frequency of partial discharge.

[0048] 4) When the device of this solution is applied to the carbon brush of the train, there is no need to make significant changes to the original structure, which effectively saves costs and further improves the feasibility and convenience of the device. Attached Figure Description

[0049] Figure 1 This is a block diagram of a device for regulating discharge particles in a current collector system.

[0050] Figure 2 This is a schematic diagram showing the structure of the partial discharge detector control device placed inside the friction disc of the wheel (not shown).

[0051] Figure 3 This is a schematic diagram of the structure in which the control device for the discharge particle collection box (not shown in this solution) is placed inside the friction disc of the wheel.

[0052] Figure 4 This is a schematic diagram showing the discharge particles entering the discharge particle collection box under the influence of a magnetic field.

[0053] Figure 5 This is a flowchart of a control method for a device used to improve the regulation of discharge particles in a current collector system.

[0054] Among them, 1. Carbon brush; 2. Friction disc; 21. Friction disc bottom surface; 3. Partial discharge detector; 4. Closely wound solenoid assembly; 41. Horizontal solenoid; 42. Vertical solenoid; 5. Discharge particle collection box; 51. Opening; 52. Magnet; 6. First charge sensor; 7. Second charge sensor. Detailed Implementation

[0055] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0056] like Figures 1 to 4 As shown, the control device for improving discharge particles in the current collection system provided by this solution includes a discharge particle collection box 5, a tightly wound solenoid assembly 4, a pressure sensor, a current signal generator, a partial discharge detector 3, and a PC. The current signal generator, pressure sensor, and partial discharge detector 3 are all connected to the PC.

[0057] like Figure 2 As shown, the discharge particle collection box 5 is placed inside the friction disk 2, and a magnet 52 is installed inside it. The magnet 52 has an opening 51 for the discharge particles to enter. The opening 51 is located on the same side of the discharge particle collection box 5 and the friction disk 2, with the tangents pointing in the same direction. The magnet 52 is a strong magnetic magnet, which can be a permanent magnet or a magnet that generates magnetism when energized, similar to a tightly wound solenoid.

[0058] The purpose of the magnet is to attract the incoming discharge particles and prevent them from overflowing due to the rotation of the wheel.

[0059] In practice, the preferred embodiment of this scheme is that the discharge particle storage box 5 is placed on the circumference of a circle formed by multiple carbon brushes 1, with its two sides passing through the tangent; in this way, when the discharge particles are subjected to the magnetic field, they can enter the discharge particle storage box 5 more efficiently.

[0060] like Figure 2 and Figure 3 As shown, the tightly wound solenoid assembly 4 is placed inside the wheel and in contact with the friction disc 2. It is connected to a DC power supply through a current signal generator to generate a magnetic field, causing the discharge particles in the friction disc 2 to move toward the opening 51 of the discharge particle collection box 5.

[0061] A pressure sensor (not shown in the attached diagram) is positioned between carbon brush 1 and friction disk 2 to collect the contact pressure between them; for example... Figure 4 As shown, multiple partial discharge detectors 3 are respectively set at different positions on the side wall of the friction disk 2 to detect the discharge frequency of the discharge particles in the friction disk 2.

[0062] In this scheme, the PC is used to receive the contact pressure uploaded by the pressure sensor, and when the contact pressure changes, it sends a preset current to the tightly wound solenoid assembly 4 through the current signal generator to generate a magnetic field, causing the discharge particles in the friction disk 2 to move toward the opening 51 of the discharge particle collection box 5.

[0063] The PC is used to start the partial discharge detector 3 to detect the discharge frequency of the discharge particles in the friction disk 2. When the discharge frequency is greater than the preset frequency, the current flowing into the tightly wound solenoid assembly 4 is increased through the current signal generator to enhance the magnetic field until the discharge frequency detected by the partial discharge detector 3 is less than the preset frequency.

[0064] In one embodiment of the present invention, the tightly wound solenoid assembly 4 includes at least one transverse solenoid 41 arranged on the lower surface of a carbon brush 1 and a vertical solenoid 42 arranged perpendicularly to the lower surface of each transverse solenoid 41. Both the transverse solenoid 41 and the vertical solenoid 42 are located inside the wheel, and the vertical solenoid 42 is in contact with the friction disc 2. The transverse solenoid 41 is parallel to the tangent of the circle formed by the plurality of carbon brushes 1. All transverse solenoids 41 and all vertical solenoids 42 are respectively connected to an independent DC power supply through a current signal generator.

[0065] The PC also includes two current signal generators that control current to flow into the horizontal solenoid 41 and the vertical solenoid 42 respectively, so that the horizontal solenoid 41 generates a magnetic field that causes the discharge particles to move from the carbon brush 1 to the bottom surface 21 of the friction disk, and the vertical solenoid 42 generates a magnetic field that causes the discharge particles to move towards the opening 51 of the discharge particle collection box 5.

[0066] After the tightly wound solenoid assembly 4 of this scheme adopts the above-mentioned configuration, the discharge particle storage box 5 can be directly fixed on the bottom surface 21 of the friction disk, and the discharge particles move obliquely downward under the magnetic field. Figures 2-3 The spiral motion (as shown from the product structure perspective) facilitates the installation of the discharge particle storage box 5, and also facilitates the control of the magnetic field direction of the horizontal solenoid 41 and the vertical solenoid 42.

[0067] To improve the service life of the tightly wound solenoid assembly 4, this solution preferably has the surface of the transverse solenoid 41 coated with insulating varnish, and the vertical solenoid 42 is disposed inside the shielding cover.

[0068] In implementation, the preferred method for improving the regulation of discharge particles in the current collection system also includes a first charge sensor 6 installed in the friction disk 2 and connected to the PC. When the discharge frequency is greater than the preset frequency, the charge of the discharge particles in the friction disk 2 is collected. The PC calculates the magnetic field strength generated in the horizontal solenoid 41 and the vertical solenoid 42 according to the charge of the discharge particles, and calculates the current flowing into the horizontal solenoid 41 and the vertical solenoid 42 according to the magnetic field strength of the horizontal solenoid 41 and the vertical solenoid 42.

[0069] In one embodiment of the present invention, the calculation methods for the magnetic field strength and current in the transverse solenoid 41 and the vertical solenoid 42 are the same;

[0070] The PC calculates the magnetic field strength generated by the transverse solenoid 41 based on the charge of the discharged particles, and calculates the current flowing through the transverse solenoid 41 based on the magnetic field strength. The methods include:

[0071] A1. Determine the number of discharge particles based on the charge of the discharge particles and the charge of a single discharge particle;

[0072] A2. Determine the total mass of all discharged particles based on the number of discharged particles and the mass of each particle;

[0073] A3. Based on the charge and total mass of the discharged particles, calculate the force generated by the discharged particles under the action of the current flowing through carbon brush 1:

[0074]

[0075] , ,

[0076] , ,

[0077] Where F is the force; , and These represent the Lorentz force, centripetal force, and gravity acting on the discharged particles, respectively. and , respectively, represent the air resistance and electric force experienced by the discharge particle; q is the charge of the discharge particle; E and E represent the magnetic field strength and electric field strength generated by the current flowing through the carbon brush, respectively; v is the magnetic field strength of the discharge particle. The velocity under the action; m is the total mass of the discharge particles; C is the air resistance; ρ is the air density; S is the windward volume of the discharge particles; g is the acceleration due to gravity; r1 is the radius of the circle formed by all the carbon brushes;

[0078] A4. Calculate the magnetic field strength generated by the transverse solenoid 41 based on the force F exerted by the discharged particles:

[0079]

[0080] in, The magnetic field strength generated by the transverse solenoid 41;

[0081] A5. Based on magnetic field strength Calculate the current I flowing through the transverse solenoid 41:

[0082]

[0083] in, r1 is the permeability in vacuum; r2 is the distance between the magnetic field generated by the tightly wound solenoid assembly 4 and the current generated in the carbon brush 1.

[0084] This solution, through the above calculation method, can accurately calculate the magnetic field strength required to be generated in the transverse solenoid 41 and the vertical solenoid 42, and then determine the magnitude of the current passed through the current signal generator into the transverse solenoid 41 and the vertical solenoid 42, so as to control the discharge particles to enter the discharge particle collection box 5, thereby slowing down the discharge frequency and keeping as many of them as possible in the discharge particle collection box 5, and controlling the distribution of discharge particles inside the wheel.

[0085] like Figure 2As shown, the device for regulating discharge particles in the current collection system also includes a second charge sensor 7 installed in the discharge particle collection box 5 and connected to a PC. This sensor is used to collect the charge of the discharge particles collected in the discharge particle collection box 5. When the charge of the collected discharge particles is greater than a preset charge, the PC notifies the management personnel to clean the discharge particle collection box 5.

[0086] In implementation, this scheme preferably selects a pressure sensor with high insulation and anti-interference capabilities, model Honeywell PX2; the partial discharge detector 3 uses a structure with high insulation, anti-interference, and lightweight for easy fixation, model Hikvision PPM2000; the first charge sensor 6 and the second charge sensor 7 both use sensors with high insulation, anti-interference, and lightweight for easy fixation, model Honeywell Hall effect sensors.

[0087] refer to Figure 5 , Figure 5 A flowchart is shown for a control method of a device for regulating discharge particles in a current collector system; as shown. Figure 5 As shown, the method S includes steps S1 to S5.

[0088] In step S1, the contact pressure uploaded by the pressure sensor is received. When the contact pressure changes, it indicates that the train has started, and the current signal generator and multiple partial discharge detectors 3 are turned on.

[0089] In step S2, the control current signal generator passes a preset current into the transverse and vertical tightly wound solenoids to generate a magnetic field, causing the discharge particles in the friction disk 2 to move toward the opening 51 of the discharge particle storage box 5.

[0090] In step S3, the discharge frequencies of the discharge particles in the friction disk 2 detected by multiple partial discharge detectors 3 are received, and the maximum discharge frequency is selected.

[0091] In step S4, it is determined whether the maximum discharge frequency is greater than the preset frequency. If so, proceed to step S5; otherwise, return to step S3.

[0092] In step S5, the control current signal generator increases the current flowing into the horizontal and vertical tightly wound solenoids respectively to enhance the magnetic field, and then returns to step S3 until the maximum discharge frequency is less than or equal to the preset frequency.

[0093] When the first charge sensor 6 is installed in the friction disk 2, the PC calculates the magnetic field strength generated in the transverse solenoid 41 and the vertical solenoid 42 according to the charge of the discharged particles, and calculates the current flowing into the transverse solenoid 41 and the vertical solenoid 42 according to the magnetic field strength of the transverse solenoid 41 and the vertical solenoid 42.

[0094] In summary, under train operation, this solution, through the cooperation of the partial discharge detector 3 and the first charge sensor 6, can regulate the magnetic field of the tightly wound solenoid assembly 4 to carry the discharge particles into the discharge particle collection box 5, thereby reducing the accumulation of discharge particles inside the wheel, thus reducing potential electromagnetic interference and extending the service life of the motor.

Claims

1. A device for regulating discharge particles in a current collector system, characterized in that, include: A discharge particle collection box is placed inside a friction disk. It contains a magnet and has an opening for the discharge particles to enter. The opening is located on a side where the discharge particle collection box and the friction disk are tangent to the same direction. The tightly wound solenoid assembly is placed inside the wheel and in contact with the friction disc. It is connected to a DC power supply through a current signal generator to generate a magnetic field, causing the discharge particles in the friction disc to move toward the opening of the discharge particle collection box. A pressure sensor is placed between the carbon brush and the friction disc to collect the contact pressure between the carbon brush and the friction disc; Multiple partial discharge detectors are installed at different positions on the side wall of the friction disk to detect the discharge frequency of discharge particles in the friction disk; The PC is connected to a current signal generator, a pressure sensor, and a partial discharge detector. It receives the contact pressure transmitted by the pressure sensor and, when the contact pressure changes, sends a preset current through the current signal generator into the tightly wound solenoid assembly to generate a magnetic field, causing the discharge particles in the friction disk to move toward the opening of the discharge particle collection box. This is used to activate multiple partial discharge detectors to detect the discharge frequency of discharge particles in the friction disk. When the maximum discharge frequency is greater than the preset frequency, the current flowing into the tightly wound solenoid assembly is increased through the current signal generator to enhance the magnetic field until the maximum discharge frequency detected by the multiple partial discharge detectors is less than the preset frequency.

2. The device for regulating discharge particles in a current collector system according to claim 1, characterized in that, The tightly wound solenoid assembly includes at least one transverse solenoid arranged on the lower surface of a carbon brush and a vertical solenoid arranged perpendicularly to the lower surface of each transverse solenoid. Both the transverse and vertical solenoids are located inside the wheel, and the vertical solenoids are in contact with the friction disc. The transverse solenoids are parallel to the tangents of the circle formed by the multiple carbon brushes. All transverse and all vertical solenoids are connected to an independent DC power supply through a current signal generator. The PC also includes two current signal generators that control current to flow into the horizontal solenoid and the vertical solenoid respectively, so that the horizontal solenoid generates a magnetic field that causes the discharge particles to move from the carbon brush to the bottom surface of the friction disk, and the vertical solenoid generates a magnetic field that causes the discharge particles to move towards the opening of the discharge particle collection box.

3. The device for regulating discharge particles in a current collector system according to claim 2, characterized in that, The surface of the horizontal solenoid is coated with insulating varnish, and the vertical solenoid is disposed inside a shielding cover.

4. The device for regulating discharge particles in a current collector system according to claim 2, characterized in that, It also includes a first charge sensor installed inside the friction disk and connected to a PC. When the discharge frequency is greater than a preset frequency, it collects the charge of the discharge particles in the friction disk. The PC calculates the magnetic field strength generated in the horizontal solenoid and the vertical solenoid based on the charge of the discharge particles, and calculates the current flowing into the horizontal solenoid and the vertical solenoid based on the magnetic field strength of the horizontal solenoid and the vertical solenoid, respectively.

5. The device for regulating discharge particles in a current collector system according to claim 4, characterized in that, The calculation methods for the magnetic field strength and current in the horizontal solenoid and the vertical solenoid are the same; The methods for calculating the magnetic field strength generated by the transverse solenoid based on the charge of the discharged particles, and then calculating the current flowing through the transverse solenoid based on the magnetic field strength, include: A1. Determine the number of discharge particles based on the charge of the discharge particles and the charge of a single discharge particle; A2. Determine the total mass of all discharged particles based on the number of discharged particles and the mass of each particle; A3. Based on the charge and total mass of the discharged particles, calculate the force generated by the discharged particles under the action of the carbon brush: ， ， ， ， Where F is the force; , and These represent the Lorentz force, centripetal force, and gravity acting on the discharged particles, respectively. and , respectively, represent the air resistance and electric force experienced by the discharge particle; q is the charge of the discharge particle; E and E represent the magnetic field strength and electric field strength generated by the current flowing through the carbon brush, respectively; v is the magnetic field strength of the discharge particle. The velocity under the action; m is the total mass of the discharge particles; C is the air resistance; ρ is the air density; S is the windward volume of the discharge particles; g is the acceleration due to gravity; r1 is the radius of the circle formed by all the carbon brushes; A4. Calculate the magnetic field strength generated by the transverse solenoid based on the force F exerted by the discharged particles: in, The magnetic field strength generated by the transverse solenoid; A5. Based on magnetic field strength Calculate the current I flowing through the transverse solenoid: in, r1 is the permeability in vacuum; r2 is the distance between the magnetic field generated by the tightly wound solenoid assembly and the current generated in the carbon brush.

6. The device for regulating discharge particles in a current collector system according to claim 1 or 2, characterized in that, The discharge particle storage box is placed on the circumference of a circle composed of multiple carbon brushes, with its two sides passing through the tangent.

7. The device for regulating discharge particles in a current collector system according to claim 1 or 2, characterized in that, It also includes a second charge sensor installed in the discharge particle collection box and connected to a PC, used to collect the charge of the discharge particles collected in the discharge particle collection box. When the charge of the collected discharge particles is greater than the preset charge, the PC notifies the management personnel to clean the discharge particle collection box.

8. A control method for the device for regulating discharge particles in a current collector system as described in any one of claims 2-7, characterized in that, Including the following steps: S1. Receives the contact pressure uploaded by the pressure sensor. When the contact pressure changes, it indicates that the train has started. Then, the current signal generator and multiple partial discharge detectors are turned on. S2. The control current signal generator passes a preset current into the horizontal and vertical tightly wound solenoids to generate a magnetic field, causing the discharge particles in the friction disk to move toward the opening of the discharge particle collection box. S3. Receive the discharge frequencies of discharge particles in the friction disk detected by multiple partial discharge detectors, and select the maximum discharge frequency among them. S4. Determine whether the maximum discharge frequency is greater than the preset frequency. If yes, proceed to step S5; otherwise, return to step S3. S5. Control the current signal generator to increase the current flowing into the horizontal and vertical tightly wound solenoids respectively to enhance the magnetic field, and then return to step S3 until the maximum discharge frequency is less than or equal to the preset frequency.

9. The control method according to claim 8, characterized in that, When a first charge sensor is installed inside the friction disk, the PC calculates the magnetic field strength generated in the horizontal and vertical solenoids based on the charge of the discharged particles, and calculates the current flowing into the horizontal and vertical solenoids based on the magnetic field strength of the horizontal and vertical solenoids.

Images