High-voltage exercise ignition protection method and device and stable isotope electromagnetic separation system

Abstract

The invention relates to the technical field of stable isotope electromagnetic separation systems, in particular to a high-voltage exercise ignition protection method and device and a stable isotope electromagnetic separation system. The high-voltage exercise ignition protection method comprises the following steps: detecting ignition signal intensity and ignition time of an ion source; when the ignition signal intensity is larger than a first threshold value, if the ignition time is larger than first preset time, the high-voltage power source is turned off, and slow starting is conducted; if the ignition time is smaller than the first preset time, high-voltage exercise continues to be carried out; when the ignition signal intensity is larger than a second threshold but smaller than the first threshold, if the ignition time is larger than second preset time, the high-voltage power supply is turned off, and quick starting is carried out; if the ignition time is smaller than the second preset time, high-voltage exercise continues to be carried out; and when the ignition signal intensity is smaller than a second threshold value, high-voltage exercise continues to be carried out. By means of the method, some sparking phenomena which cannot damage components can be ignored, and the problem of excessive protection caused by frequent restart of the high-voltage power supply system is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of stable isotope electromagnetic separation systems, and in particular to a high-voltage forging ignition protection method and device and a stable isotope electromagnetic separation system. Background Art

[0002] The stable isotope electromagnetic separation system is prone to serious ion source sparking after high voltage is applied to the ion source. When the sparking is too frequent or the sparking intensity is too intense, it will cause difficulties in high-voltage training and inability to stably receive. In severe cases, it will cause damage to some components of the ion source. Therefore, high-voltage training of the ion source is required before the ion source arcs and stably receives.

[0003] The current high-voltage training method for ion sources is as follows: 1) Apply high voltage to the ion source from zero, and increase the voltage by a small amount. 2) Keep the voltage constant and allow the ion source to spark inside. 3) Wait until the frequency of sparking becomes very small and maintain for a period of time. 4) Increase the voltage by a small amount. 5) Repeat steps 2-4 until the voltage reaches the highest target voltage. During the high-voltage training process, the sparking may be too frequent or too intense. At this time, the high voltage needs to be turned off and the high-voltage training needs to be repeated, otherwise the components of the ion source may be damaged.

[0004] At present, the spark protection of high-voltage training is the spark detection in the high-voltage power supply system. When the spark detection value exceeds the set threshold, that is, when the high-voltage power supply system detects a spark of excessive intensity, the high voltage of the ion source is turned off to protect the components, and then the high-voltage training needs to be re-raised to high voltage. However, within a certain extent, the ion source spark is acceptable, which can play a role in removing dust, moisture, surface protrusions, and surface burrs. The method of turning off the high voltage of the ion source and re-raising the high voltage will prolong the time of high-voltage training, delay the progress of high-voltage training, and cause over-protection. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the embodiment of the present invention is to provide a high-voltage training ignition protection method, which detects the ignition signal strength and ignition time to ignore some ignition phenomena that will not damage components, and avoid the over-protection problem caused by frequent restarts of the high-voltage power supply system. At the same time, when the ignition is too intense, the high voltage is turned off in time to protect the components.

[0006] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0007] A high-voltage exercise ignition protection method, comprising:

[0008] Detect the ignition signal strength and ignition time of the ion source;

[0009] When the ignition signal strength is greater than the first threshold, the following steps are performed according to the ignition time: if the ignition time is greater than the first predetermined time, the high voltage power supply is turned off and a slow start is performed, and the high voltage exercise is performed again; if the ignition time is less than the first predetermined time, the high voltage exercise is continued;

[0010] When the ignition signal strength is greater than the second threshold but less than the first threshold, the following steps are performed according to the ignition time: if the ignition time is greater than the second predetermined time, the high voltage power supply is turned off and a quick start is performed, and the high voltage exercise is continued; if the ignition time is less than the second predetermined time, the high voltage exercise is continued;

[0011] When the ignition signal strength is less than the second threshold, the high-voltage exercise continues.

[0012] According to other embodiments, the present disclosure also adopts the following technical solutions:

[0013] A control device for the above-mentioned high-voltage exercise ignition protection method comprises:

[0014] A detection module is used to detect the ignition signal strength and ignition time of the ion source;

[0015] A shutdown module, used to shut down the high-voltage power supply system and record the power-off high voltage before the high-voltage power supply system is shut down;

[0016] Slow start module, used to slowly add high voltage from zero after shutting down the high voltage power supply system until the high voltage is cut off;

[0017] The fast start module is used to quickly add high voltage from zero after shutting down the high voltage power supply system until the high voltage is powered off.

[0018] According to other embodiments, the present disclosure also adopts the following technical solutions:

[0019] A stable isotope electromagnetic separation system comprises an ion source, a high voltage power supply system and the control device as described above.

[0020] According to other embodiments, the present disclosure also adopts the following technical solutions:

[0021] A readable storage medium storing a computer program, when the computer program is executed by one or more processors, performs the high-voltage exercise ignition protection method as described above.

[0022] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0023] The high-voltage training ignition protection method is applied to the stable isotope electromagnetic separation system, and the high-voltage training process of the ion source is protected by ignition. By detecting the ignition signal strength and ignition time, it is intelligently determined whether measures need to be taken to protect the ion source from damage. Specifically, phased response measures are adopted for different thresholds of ignition signal strength and ignition time, and fast start and slow start are used to restore high voltage. If the ignition is too dangerous and intense, the high voltage is turned off and restarted, and the moderately intense ignition is handled according to the situation. If the ignition is harmless, it is left alone, so as to ignore some ignition phenomena that will not damage the ion source, avoid excessive protection caused by frequent slow start or fast start of the high-voltage power supply system, and at the same time, the high voltage is turned off in time when the ignition is too intense to protect the components.

[0024] Advantages of additional aspects of the present invention will be given in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In addition, the spacing or size between each other is exaggerated to show the position of each part, and the schematic diagram is only used for illustration.

[0026] Figure 1 It is a working schematic diagram of the stable isotope electromagnetic separator system;

[0027] Figure 2 It is a flow chart of the high-voltage exercise ignition protection method provided by an embodiment of the present invention;

[0028] Figure 3 is a schematic diagram of an ignition control device provided by an embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of a stable isotope electromagnetic separation system provided by an embodiment of the present invention;

[0030] In the figure: vacuum chamber 01, ion source 02, ion beam 03, receiver 04. DETAILED DESCRIPTION

[0031] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Terminology explanation:

[0033] Introduction to Stable Isotope Electromagnetic Separation System: Stable Isotope Electromagnetic Separator System Figure 1 As shown, it includes: a vacuum chamber 01, an ion source 02, an ion beam 03 and a receiver 04. The ion beam 03 emitted by the ion source 02 is accelerated by the electric field into the magnetic field and deflected by the Lorentz force. The motion trajectories of isotopes with different mass-to-charge ratios are different, and finally a separation and reception effect is achieved at the receiver 04.

[0034] The basic process of electromagnetic separation of isotopes is as follows:

[0035] 1) Load raw materials into the ion source and install the ion source;

[0036] 2) Evacuate the vacuum chamber to a high vacuum of about 1×10 -5 mbar;

[0037] 3) Ion source high voltage training;

[0038] 4) The ion source is subjected to high voltage, arcing, and isotope separation until the raw materials are exhausted, the ion source frequently ignites, and ion source parts fail;

[0039] 5) Remove the ion source, solve the problem, and repeat steps 1-5;

[0040] 6) When the receiving time is long enough, remove the receiver and take out the separated isotopes for purification.

[0041] Before the ion source arcs and emits an ion beam, it needs to be subjected to high-voltage training. The ion source is assembled outside the vacuum chamber, and dust, moisture and other impurities will adhere to it. The surface of the components of the ion source will also have protrusions, burrs, and insufficient surface smoothness. At this time, the ion source will directly arc in a high vacuum and will frequently spark, resulting in an unstable ion beam that cannot be received. Therefore, high-voltage training is required before the ion source arcs. The high-voltage power supply system provides high voltage to the ion source, and the dust, moisture, surface protrusions, and surface burrs on some components of the ion source that are subjected to high voltage are removed by sparking. Appropriate sparking can remove dust, moisture, burrs, etc., but overly intense sparking may damage some components of the ion source.

[0042] Embodiment 1

[0043] In order to solve the technical problems mentioned in the background technology, this embodiment proposes a high-pressure tempering ignition protection method, which is applied to a stable isotope electromagnetic separation system to perform ignition protection on the high-pressure tempering process of the ion source therein.

[0044] Combine the following Figure 2 The technical solution provided in this embodiment is described as follows:

[0045] S10 When the ignition signal strength is greater than the first threshold:

[0046] If the ignition time is greater than the first predetermined time, the ignition is too intense and may damage some components of the ion source. In this case, the high voltage needs to be turned off and a slow start is performed. The voltage is slowly increased from zero to the power-off high voltage, and the high voltage training is performed again.

[0047] If the ignition time is less than the first predetermined time at S12, the intensity of the ignition is too high but the frequency is low, and the high-pressure exercise can be continued at this time.

[0048] S20 When the ignition signal strength is greater than the second threshold but less than the first threshold:

[0049] S21 If the ignition time is greater than the second predetermined time, a quick start is performed, and the voltage is quickly increased from zero to the power-off high voltage, and the high-voltage training is continued. At the same time, if N ≥ N1, the ignition is too frequent at this time, resulting in too many quick starts, and a slow start is required, and the voltage is slowly increased from zero to the power-off high voltage, and the high-voltage training is repeated;

[0050] If the ignition time is less than the second predetermined time, the ignition intensity and frequency are insufficient to damage the ion source, and the high-voltage training can be continued at this time;

[0051] S30 When the ignition signal strength is less than the second threshold:

[0052] At this time, the ignition intensity is relatively low and cannot cause damage to the ion source, so you can continue with high-voltage training.

[0053] The ion source high voltage training is usually up to 40kV, where the speeds of fast start and slow start are as follows:

[0054] (1) Quick start: Rapidly increase the voltage from zero to the power-off high voltage, and there is usually no violent ignition during the high voltage climb, and there will be no pause in the middle of the high voltage climb

[0055] When the power-off high voltage is less than or equal to 10kV, it is usually quickly increased from zero to the power-off high voltage at a speed of 20kV / min;

[0056] When the power-off high voltage is greater than 10kV, it is rapidly increased from zero to 10kV at a speed of 20kV / min before 10kV, and it is rapidly increased from 10kV to the power-off high voltage at a speed of 10kV / min after 10kV.

[0057] (2) Slow start: Slowly increase the voltage from zero to the power-off high voltage. There will usually be a certain degree of sparking during the process of climbing the high voltage. At this time, a proper pause is required to alleviate the sparking phenomenon.

[0058] When the power-off high voltage is less than or equal to 10kV, it is usually slowly increased from zero to the power-off high voltage at a speed of 10kV / min;

[0059] When the power-off high voltage is greater than 10kV, slowly increase it from zero to 10kV at a speed of 10kV / min before 10kV, and slowly increase it from 10kV to the power-off high voltage at a speed of 2kV / min after 10kV.

[0060] Detect the ignition signal strength and ignition time of the ion source; when the ignition signal strength is greater than a first threshold value, perform the following steps according to the ignition time: if the ignition time is greater than a first predetermined time, turn off the high-voltage power supply and perform a slow start, and then re-perform high-voltage exercise; if the ignition time is less than the first predetermined time, continue to perform high-voltage exercise; when the ignition signal strength is greater than a second threshold value but less than the first threshold value, perform the following steps according to the ignition time: if the ignition time is greater than the second predetermined time, turn off the high-voltage power supply and perform a quick start, and then continue to perform high-voltage exercise; if the ignition time is less than the second predetermined time, continue to perform high-voltage exercise; when the ignition signal strength is less than the second threshold value, continue to perform high-voltage exercise.

[0061] The core of this method is to monitor the ignition signal strength and ignition time of the ion source in real time, and intelligently determine whether measures need to be taken to protect the ion source from damage. Specifically, when the detected ignition signal strength exceeds the preset first threshold, the system will further check the ignition time. If the ignition time exceeds the first predetermined time, it indicates that the ignition may cause damage to the ion source. At this time, the system will turn off the high-voltage power supply and perform a slow start process to ensure the safety of the ion source and re-perform high-voltage exercise. On the contrary, if the ignition time is less than the first predetermined time, the system determines that the ignition will not cause damage to the ion source, so the high-voltage exercise continues. Similarly, when the ignition signal strength is between the second threshold and the first threshold, the system will decide whether to perform a quick start or continue the high-voltage exercise based on the ignition time. This hierarchical processing method can effectively balance the protection of the ion source and the efficiency of high-voltage exercise, avoid unnecessary high-voltage power supply shutdown and restart, and improve the stability and reliability of the system.

[0062] In this embodiment, the first threshold is set to the critical value of the maximum spark intensity acceptable to the ion source. This means that when the intensity of the spark signal exceeds this value, the spark is very likely to damage the ion source, and measures need to be taken to protect it. The setting value of the first threshold is usually determined by the actual condition of the ion source. Based on a deep understanding of the performance of the ion source and the support of experimental data, it is ensured that a timely response can be made when the spark intensity exceeds this value, thereby protecting the ion source from damage. This setting helps to allow a certain degree of sparking while maintaining the stability of the ion source, and these sparking phenomena help to remove impurities inside the ion source.

[0063] In the present embodiment, the second threshold is defined as the critical value at which the spark intensity cannot cause damage to the ion source. This means that when the intensity of the spark signal is less than this value, the spark cannot cause damage to the ion source. The setting value of the second threshold is usually determined by the actual condition of the ion source. This is a safety limit used to distinguish which spark phenomena are safe and which may cause damage to the equipment. When the spark signal intensity is lower than the second threshold, the system believes that this spark phenomenon will not cause damage to the ion source, so high-voltage training can continue without interruption. Such a design allows the system to maintain operating efficiency while avoiding frequent shutdown and restart of the high-voltage power supply due to small spark phenomena.

[0064] The range of the first predetermined time is set to 4-8μs. For example, the first predetermined time can be any value of 4μs, 5μs, 6μs, 7μs, and 8μs. This time range can be adjusted according to the actual situation, and it represents the upper limit of the ignition time that the ion source can withstand. If the ignition time exceeds this range, the system will consider that the ignition phenomenon may cause damage to the ion source and measures need to be taken to protect it. By precisely controlling the threshold of the ignition time, this embodiment can reduce unnecessary high-voltage power supply shutdowns and restarts while ensuring the safety of the ion source, thereby improving the stability and efficiency of the system.

[0065] The range of the second predetermined time is set to 500-1000μs. For example, the range of the second predetermined time can be any value among 500μs, 600μs, 700μs, 800μs, 900μs, and 1000μs. This time range can be adjusted according to the actual situation to distinguish between the ignition phenomenon that requires quick start and the ignition phenomenon that continues the high-voltage training. When the ignition time exceeds the second predetermined time, the system will execute the quick start procedure and quickly resume the high-voltage training to reduce the interruption time of the high-voltage training caused by the ignition phenomenon. This design helps to protect the ion source while minimizing the interference with the high-voltage training process.

[0066] N is the number of fast restarts during the current high - voltage conditioning, with an initial value of 0. This parameter is used to track the number of fast restarts caused by arcing during high - voltage conditioning. By monitoring the value of N, the system can determine the frequency of arcing and adjust the protection measures accordingly. This dynamic monitoring and response mechanism helps the system to respond reasonably when facing frequent arcing to protect the ion source from damage.

[0067] N1 is the critical value of the number of fast restarts during the current high - voltage conditioning. When N < N1, arcing will not cause damage to the ion source; when N ≥ N1, the arcing intensity and frequency are too high, which may cause damage to the ion source. The range of N1 is 5 - 7. The setting of N1 is based on the consideration of system stability and the need to protect the ion source, and can be adjusted according to the actual situation. When the number of fast restarts reaches or exceeds N1, the system will consider that the arcing phenomenon is too frequent and may cause damage to the ion source. Therefore, it is necessary to execute the slow - start procedure to slowly increase the high - voltage from zero to ensure the safety of the ion source. This design allows the system to flexibly adjust the protection measures when facing different frequencies of arcing to adapt to different operating conditions.

[0068] Embodiment 2

[0069] Based on the same inventive concept, another embodiment of the present invention provides a control device for implementing the high - voltage conditioning arcing protection method described in Embodiment 1, including: a detection module, a shutdown module, a slow - start module, and a fast - start module.

[0070] The function of the detection module is to continuously monitor the intensity and duration of the arcing signal generated by the ion source during high - voltage conditioning. Since the intensity and duration of the arcing signal are key parameters for determining whether measures need to be taken to protect the ion source. By continuously monitoring these parameters, the control device can respond in a timely manner to different arcing situations, thereby protecting the ion source from damage.

[0071] The shutdown module is activated when the detected arcing signal intensity exceeds the preset threshold and the arcing time exceeds a specific time. It is responsible for shutting down the high - voltage power supply system and recording the high - voltage level before the system shuts down, that is, the power - off high - voltage. The shutdown module allows the system to safely shut down the high - voltage power supply when necessary to prevent possible damage to the ion source and retain the current working state for subsequent restart or recovery operations.

[0072] The slow - start module is activated after the high - voltage power supply system is shut down. It is responsible for slowly increasing the high - voltage from zero until it reaches the previously recorded power - off high - voltage. This gradual increase in high - voltage helps to reduce the impact on the ion source and allows the system to have enough time to stabilize before restarting the high - voltage conditioning.

[0073] The fast start module is also activated after the high voltage power system is turned off, but unlike the slow start module, it is responsible for quickly increasing the high voltage from zero until it reaches the high voltage level before the power failure. This module is suitable for when the ignition situation is not serious, and can quickly resume the high voltage training process to improve efficiency.

[0074] This embodiment provides a flexible and responsive system to adapt to different ignition situations and ensure the safety of the ion source and the continuity of the high-voltage tempering process.

[0075] Embodiment 3

[0076] Based on the same inventive concept, another embodiment of the present invention provides a stable isotope electromagnetic separation system, comprising an ion source, a high voltage power supply system and a control device as described in Embodiment 2. The ion source is a key component for generating an ion beam in the system, and the high voltage power supply system provides the ion source with the necessary energy to maintain the generation and acceleration of the ion beam.

[0077] The integration of the control device enables the stable isotope electromagnetic separation system to effectively protect the ion source from spark damage during high-voltage training. Through the detection module, the system can monitor spark events in real time, and the shutdown module can safely shut down the high-voltage power supply when necessary to prevent damage to the ion source. The slow start module and the fast start module provide slow or fast high-voltage recovery strategies in different spark situations to minimize the impact on the production process.

[0078] This integrated control device not only improves the safety and reliability of the stable isotope electromagnetic separation system, but also improves production efficiency by reducing downtime caused by sparks. By precisely controlling the shutdown and startup of the high-voltage power supply, the system can better manage the high-voltage training process and ensure the effective operation of the stable isotope electromagnetic separation system.

[0079] Embodiment 4

[0080] The purpose of this embodiment is to provide a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps of the method in the first embodiment are performed.

[0081] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, devices, systems or storage media. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0082] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0083] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0084] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0085] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A high-voltage exercise ignition protection method, characterized in that: include: Detect the ignition signal strength and ignition time of the ion source; When the ignition signal strength is greater than the first threshold, the following steps are performed according to the ignition time: if the ignition time is greater than the first predetermined time, the high voltage power supply is turned off and a slow start is performed, and the high voltage exercise is performed again; if the ignition time is less than the first predetermined time, the high voltage exercise is continued; When the ignition signal strength is greater than the second threshold but less than the first threshold, the following steps are performed according to the ignition time: if the ignition time is greater than the second predetermined time, the high voltage power supply is turned off and a quick start is performed, and the high voltage exercise is continued; if the ignition time is less than the second predetermined time, the high voltage exercise is continued; When the ignition signal strength is less than the second threshold, the high-voltage exercise continues.

2. The high-voltage training ignition protection method according to claim 1, characterized in that: The first threshold is a critical value of the maximum ignition intensity acceptable to the ion source.

3. The high-voltage training ignition protection method according to claim 1, characterized in that: The second threshold is a critical value at which the ignition intensity cannot cause damage to the ion source.

4. The high-voltage training ignition protection method according to claim 1, characterized in that: The first predetermined time ranges from 4 μs to 8 μs.

5. The high-voltage training ignition protection method according to claim 1, characterized in that: The second predetermined time ranges from 500 to 1000 μs.

6. The high-voltage training ignition protection method according to claim 1, characterized in that: N is the number of quick restarts in the current high-pressure exercise, and the initial value is 0.

7. The high-voltage training ignition protection method according to claim 1, characterized in that: N1 is the critical value of the number of fast restarts in the current high-pressure exercise, and the range of N1 is 5-7.

8. A control device for the high-voltage exercise ignition protection method according to any one of claims 1 to 7, characterized in that: include: A detection module is used to detect the ignition signal strength and ignition time of the ion source; A shutdown module, used to shut down the high-voltage power supply system and record the power-off high voltage before the high-voltage power supply system is shut down; Slow start module, used to slowly add high voltage from zero after shutting down the high voltage power supply system until the high voltage is cut off; The fast start module is used to quickly add high voltage from zero after shutting down the high voltage power supply system until the high voltage is powered off.

9. A stable isotope electromagnetic separation system, characterized in that: It comprises an ion source, a high voltage power supply system and a control device as claimed in claim 8.

10. A readable storage medium storing a computer program, characterized in that: When the computer program is executed by one or more processors, the high-voltage exercise ignition protection method according to any one of claims 1 to 7 is performed.

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