Excitation device of rotating disk electrode emission spectrometer
By utilizing the rolling contact of conductive slip rings and precious metal materials, the problems of complex assembly and poor contact in the excitation device of the rotating disk electrode emission spectrometer were solved, thereby achieving stability and extending the lifespan of the device and ensuring the normal operation of the spectrometer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU YITAI HANGKONG SECURITY ENG TECH CO LTD
- Filing Date
- 2026-03-19
- Publication Date
- 2026-05-01
AI Technical Summary
The excitation device of the existing rotating disk electrode emission spectrometer has problems such as complicated assembly, poor contact, and impaired normal operation, especially prone to failure during long-term use.
The system employs rolling contact between a conductive slip ring stator and a conductive slip ring rotor, with the contact material being a precious metal. The negative terminal of the excitation power output from the arc generator is transmitted to the disk electrode mounting shaft through the conductive slip ring. A high-voltage arc is generated between the graphite disk electrode and the graphite rod electrode to excite the oil sample. The assembly is simplified by utilizing the fixed structure of the conductive slip ring rotor and the anti-rotation plate.
It achieves stability and extended lifespan of the excitation device, is easy to assemble, small in size and light in weight, and ensures the normal operation of the spectrometer.
Smart Images
Figure CN224189874U_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of oil analysis technology, and particularly relates to an excitation device for a rotating disk electrode emission spectrometer. Background Technology
[0002] Lubricating oil spectral monitoring of aircraft engines is one of the important means of condition-based maintenance. By analyzing the spectral characteristics of lubricating oil, the wear condition of engines and main gearboxes can be monitored. This not only allows for timely prediction of wear-related faults, ensuring flight safety and extending the service life of aircraft and engines, but also provides scientific guidance for maintenance work, thereby improving maintenance quality and reducing maintenance costs and workload.
[0003] In existing technologies, the excitation device of a rotating disk electrode emission spectrometer uses a rotating graphite disk electrode to bring the oil sample to the analytical gap between the graphite disk electrode and the graphite rod electrode. A high-voltage electric arc generated between the two electrodes excites the oil sample, causing the atoms or ions of the analyte element to transition from the ground state to the excited state. The disk electrode excitation device uses rolling contact between a metal block, a compression spring, and a rotating shaft to transfer the excitation power. This device requires high precision in component machining, is complex to assemble, and is prone to poor contact during long-term operation, affecting the normal operation of the rotating disk electrode emission spectrometer. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an excitation device for a rotating disk electrode emission spectrometer. Through the rolling contact of a conductive slip ring stator and a conductive slip ring rotor, using a precious metal contact material, the negative terminal of the excitation power output from the arc generator is transmitted to the disk electrode mounting shaft. The graphite disk electrode is mounted on the disk electrode mounting shaft through an inner hole, achieving conductivity with the negative terminal of the excitation power output from the arc generator. The rotation of the graphite disk electrode carries the oil sample to the analysis gap between the graphite disk electrode and the graphite rod electrode, where a high-voltage arc generated between the two electrodes excites the oil sample. The conductive slip ring rotor is fixed to the disk electrode rotation shaft by set screws. Two anti-rotation plates are symmetrically arranged on the outer side of the conductive slip ring stator and are fixed to the motor mounting base by screws. Wires are led out from the conductive slip ring stator and connected to the negative terminal of the excitation power output from the arc generator via quick-connect connectors.
[0005] The present invention adopts the following technical solution:
[0006] An excitation device for a rotating disk electrode emission spectrometer includes a support plate fixed to an excitation substrate by screws. A copper sleeve is embedded in a mounting hole in the support plate, with a clearance fit between the copper sleeve and the support plate. A disk electrode rotating shaft is mounted inside the copper sleeve, passing through the inner hole of the copper sleeve and a conductive slip ring rotor, and then connected to the left end of a rubber coupling. The rubber coupling is connected to a stepper motor shaft via a motor shaft connecting block. A disk electrode mounting shaft is mounted on the disk electrode rotating shaft by screws, and a graphite disk electrode is mounted on the disk electrode mounting shaft through an inner hole. A graphite rod electrode is clamped by a rod electrode clamp, which is fixed to a pressure block. A slide rail support is fixed to the excitation substrate by screws. Guide posts pass through the through holes of a tension spring and the pressure block, respectively, and are inserted into two blind holes in the slide rail support at both ends.
[0007] Furthermore, the arc generator is fixed to the bottom plate of the inner cavity by screws.
[0008] Furthermore, the positive terminal of the arc generator's output excitation power supply is connected to the electrode clamp, and the conductive slip ring stator lead wire is connected to the negative terminal of the arc generator's output excitation power supply via a quick-connect connector.
[0009] Furthermore, the conductive slip ring includes a conductive slip ring rotor, a conductive slip ring stator, and two anti-rotation plates. The conductive slip ring rotor is arranged at the center of the conductive slip ring stator, and two anti-rotation plates are arranged on the outside of the conductive slip ring stator. The conductive slip ring rotor is fixedly connected to the rotating shaft of the disk electrode, and the anti-rotation plates are mounted on a motor mounting base. The motor mounting base is mounted on the back of the excitation substrate.
[0010] Furthermore, the conductive slip ring stator and the conductive slip ring rotor are in rolling contact, and the contact material is a precious metal.
[0011] The beneficial effects of this utility model are:
[0012] 1. Through the rolling contact of the conductive slip ring, made of a precious metal, the negative terminal of the excitation power output from the arc generator is transferred to the disk electrode mounting shaft. The graphite disk electrode is mounted on the disk electrode mounting shaft through its inner hole, achieving conductivity with the negative terminal of the arc generator's excitation power supply. The rotation of the graphite disk electrode carries the oil sample to the analysis gap between the graphite disk electrode and the graphite rod electrode. The high-voltage arc generated between the two electrodes excites the oil sample, resulting in stable performance and a long service life.
[0013] 2. The conductive slip ring rotor is fixed to the rotating shaft of the disc electrode by set screws. Two anti-rotation plates are symmetrically arranged on the conductive slip ring stator and are fixed to the motor mounting base by screws. Wires are led out from the conductive slip ring stator and connected to the negative terminal of the excitation power supply output by the arc generator through quick-connect connectors, making assembly simple.
[0014] 3. Small size and light weight. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is an exploded view of the rod electrode excitation device of this utility model.
[0017] Figure 3 This is an exploded view of the disk electrode excitation device of this utility model.
[0018] Figure 4 This is a block diagram illustrating the electrical principle of this utility model.
[0019] In the diagram: 1-Arc generator, 2-Rod electrode excitation device, 3-Disc electrode excitation device, 4-Rod electrode clamp, 5-Graphite rod electrode, 6-Driver, 7-Stepper motor, 8-Motor mounting base, 9-Motor shaft adapter block, 10-Rubber coupling, 11-Disc electrode rotating shaft, 12-Conductive slip ring, 13-Excitation substrate, 14-Copper sleeve, 15-Support plate, 16-Disc electrode mounting shaft, 17-Graphite disk electrode, 18-Pressure block, 19-Guide post, 20-Tension spring, 21-Slide rail support, 22-Anti-rotation plate, 23-Conductive slip ring rotor, 24-Conductive slip ring stator. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0021] like Figures 1-4 As shown, the excitation device of the rotating disk electrode emission spectrometer of this utility model includes an arc generator 1, a rod electrode excitation device 2, and a disk electrode excitation device 3.
[0022] The arc generator 1 is fixed to the bottom plate of the instrument cavity with screws. The rod electrode excitation device 2 includes a slide rail support 21, which is fixed to the excitation substrate 13 with screws. The graphite rod electrode 5 is clamped by the rod electrode clamp 4. The rod electrode clamp 4 is fixed to the pressure block 18 with hexagonal screws. The guide post 19 passes through the through holes of the tension spring 20 and the pressure block 18, and its two ends are respectively inserted into the two blind holes of the slide rail support 21. The pressure block 18 is used to compress the tension spring 20, and after being pressed down, it can automatically generate a fixed analytical gap.
[0023] The disk electrode excitation device 3 includes a stepper motor 7, which is fixed to the motor mounting base 8 by screws. The right end of a motor shaft adapter block 9 is locked to the motor shaft of the stepper motor by a recessed set screw. The motor shaft adapter block 9 is used to match the motor shaft and the rubber coupling 10. The right end of the rubber coupling 10 is connected and locked to the left end of the motor shaft adapter block 9 by a recessed set screw, and the left end of the rubber coupling 10 is connected and fixed to the disk electrode rotating shaft 11 by a recessed set screw. The rubber coupling 10 prevents high-voltage electricity from being transmitted to the stepper motor 7 and serves purposes such as insulation, torque transmission, and compensating for relative displacement between the two shafts.
[0024] The conductive slip ring 12 includes a conductive slip ring rotor 23, a conductive slip ring stator 24, and anti-rotation plates 22. The conductive slip ring rotor 23 is fixed to the disk electrode rotation shaft 11 by set screws. The anti-rotation plates 22 are mounted on the motor mounting base 8 by screws. The conductive slip ring rotor 23 is arranged at the center of the conductive slip ring stator 24, and the two anti-rotation plates 22 are arranged on the outside of the conductive slip ring stator 24 for mounting the conductive slip ring stator 24. The motor mounting base 8 is mounted on the back of the excitation substrate 13 by screws.
[0025] The support plate 15 is fixed to the excitation substrate 13 by screws. The copper sleeve 14 is embedded in the mounting hole of the support plate. The copper sleeve 14 and the support plate 15 are fitted with a clearance fit. The copper sleeve 14 does not rotate with the stepper motor 7. The disk electrode rotating shaft 11 is installed inside the copper sleeve 14. The disk electrode rotating shaft 11 passes through the inner hole of the copper sleeve 14 and the conductive slip ring rotor, and its other end reaches the left end of the rubber coupling and is fixedly connected. After the disk electrode rotating shaft 11 is engaged with the conductive slip ring 12, it is driven to rotate by the stepper motor 7.
[0026] The disk electrode mounting shaft 16 is mounted on the disk electrode rotating shaft 11 by screws, and the graphite disk electrode 17 is mounted on the disk electrode mounting shaft 16 through an inner hole. The disk electrode rotating shaft 11 drives the disk electrode mounting shaft 16 to rotate, so that the graphite disk electrode 17 can rotate and contact the oil sample.
[0027] The input power of the arc generator 1 is AC220V / 50Hz. It accepts external control signals and outputs an annular cold-pressed terminal welded to the positive terminal of the excitation power supply. It is fixed to the rod electrode clamp 4 with screws.
[0028] The negative terminal of the excitation power output from the arc generator 1 is connected to a lead wire on the conductive slip ring stator 24 via a quick-connect connector. The conductive slip ring stator 24 and the conductive slip ring rotor 23 make rolling contact using a precious metal contact material, transmitting the negative terminal of the excitation power output from the arc generator 1 to the disk electrode mounting shaft 16. Since the graphite disk electrode 17 is mounted on the disk electrode mounting shaft 16 through an inner hole, it achieves conductivity with the negative terminal of the excitation power output from the arc generator 1. The driver 6 outputs a drive signal to the stepper motor 7. The operating power supply of the driver 6 is controlled by an external control signal.
[0029] The working principle of this utility model:
[0030] The arc generator 1 receives AC220V / 50Hz power and accepts external control signals. The positive terminal of its output excitation power supply is connected to the graphite rod electrode 5 via the rod electrode clamp 4. A pressure block 18 compresses the tension spring 20, automatically generating a fixed analytical gap. The negative terminal of the arc generator 1's output excitation power supply is transmitted to the graphite disk electrode 17 via the conductive slip ring stator 24 and the conductive slip ring rotor 23. The control signal controls the output signal of the driver 6 to control the rotation of the stepper motor 7. The stepper motor 7's motor shaft torque is transmitted through the mechanical connection of the motor shaft adapter block 9, rubber coupling 10, conductive slip ring 12, disk electrode rotation shaft 11, and disk electrode mounting shaft 16, driving the graphite disk electrode 17 to rotate. The rotating graphite disk electrode 17 carries the oil sample placed in the oil boat to the analytical gap between the graphite disk electrode 17 and the graphite rod electrode 5, where the high-voltage arc generated between the two electrodes excites the oil sample.
[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. An excitation device for a rotating disk electrode emission spectrometer, characterized in that, The system includes a support plate, which is fixed to the excitation substrate by screws. A copper sleeve is embedded in the mounting hole of the support plate, and the copper sleeve and the support plate are fitted with a clearance fit. A disk electrode rotating shaft is installed in the copper sleeve. After passing through the inner hole of the copper sleeve and the conductive slip ring rotor, the disk electrode rotating shaft is connected to the left end of a rubber coupling. The rubber coupling is connected to the stepper motor shaft through a motor shaft connecting block. A disk electrode mounting shaft is installed on the disk electrode rotating shaft by screws. A graphite disk electrode is installed on the disk electrode mounting shaft through an inner hole. A graphite rod electrode is clamped by a rod electrode clamp, which is fixed to a pressure block. A slide rail support is fixed to the excitation substrate by screws. Guide posts pass through the through holes of the tension spring and the pressure block, and are inserted into two blind holes of the slide rail support at both ends.
2. The apparatus according to claim 1, characterized in that, The arc generator is fixed to the bottom plate of the inner cavity by screws.
3. The apparatus according to claim 1, characterized in that, The positive terminal of the arc generator's output excitation power supply is connected to the electrode clamp, and the conductive slip ring stator lead wire is connected to the negative terminal of the arc generator's output excitation power supply via a quick-connect connector.
4. The apparatus according to claim 1, characterized in that, The conductive slip ring includes a conductive slip ring rotor, a conductive slip ring stator, and anti-rotation plates. The conductive slip ring rotor is arranged at the center of the conductive slip ring stator, and two anti-rotation plates are arranged on the outside of the conductive slip ring stator. The conductive slip ring rotor is fixedly connected to the rotating shaft of the disk electrode, and the anti-rotation plates are mounted on the motor mounting base, which is mounted on the back of the excitation substrate.
5. The apparatus according to claim 4, characterized in that, The conductive slip ring stator and the conductive slip ring rotor are in rolling contact.