Simulation control system for discharge processing in high-radiation boron-containing water environment of nuclear power plant

Abstract

The invention particularly relates to a discharge machining simulation control system for a nuclear power plant in a high-radiation boron-containing water environment, which belongs to the technical field of special maintenance in the high-radiation environment of the nuclear power plant and comprises a man-machine interaction system, a discharge machining control system and subsystems. Each subsystem comprises a pulse power supply system, a servo power system, a washing system, a purification system, a grounding system and a tool system; the man-machine interaction system is used for man-machine interaction and displaying the discharge machining implementation data fed back by the subsystems; the electric discharge machining control system is used for generating an electric discharge machining instruction according to the man-machine interaction information and controlling the subsystems to cooperate to perform electric discharge machining work; and each subsystem is used for implementing electric discharge machining work according to the electric discharge machining instruction and feeding back electric discharge machining implementation data. According to the invention, simulation control of discharge processing in the high-radiation boron-containing water environment of the nuclear power plant is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of special maintenance technology in high radiation environment of nuclear power plant, and particularly relates to a discharge machining simulation control system in high radiation boron-containing water environment of nuclear power plant. BACKGROUND

[0002] During the operation of the nuclear power plant, various defects may occur in the equipment, and the faulty equipment needs to be cut and replaced or shaped. During the maintenance process, there are needs for cutting, hole processing, surface finishing, thread processing, etc. Since the high radiation pressure vessel and other main equipment of the running unit must always be in the boron-containing water environment, the high radiation shielding equipment in the boron-containing water environment cannot be reached by personnel, the conventional processing equipment cannot be reached, and the conventional processing means lacks completion detection means. The electric spark discharge machining process is suitable for the working environment requirements.

[0003] The existing electric spark discharge machining technology is a discharge pulse power discharge machining under oil insulation medium in the workshop, and the technology is relatively mature. Various control methods have been researched at home and abroad, and are more commonly seen in various numerical control electric spark machining machine tools. The main feature of such equipment is good machining precision, but the insulation medium is oil, which is huge in volume and cannot be moved, and needs to be processed in the workshop. At the same time, there is no related process and application of radiation resistance and boron-containing water processing. SUMMARY

[0004] The purpose of the present application is to provide a discharge machining simulation control system in high radiation boron-containing water environment of nuclear power plant, which combines discharge machining pulse power and other field layer devices to solve the problem that conventional discharge machining equipment cannot be used in high radiation and boron-containing water environment of nuclear power plant, and to realize the simulation control of discharge machining in high radiation boron-containing water environment of nuclear power plant.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: A discharge machining simulation control system in high radiation boron-containing water environment of nuclear power plant, comprising a man-machine interaction system, a discharge machining control system and various subsystems; the various subsystems comprise a pulse power system, a servo power system, a flushing system, a purification system, a grounding system and a tooling system; The man-machine interaction system is used for man-machine interaction; and the implemented discharge machining data fed back by the various subsystems are displayed; The discharge machining control system is used for generating discharge machining instructions according to the man-machine interaction information, and controlling the various subsystems to cooperate to perform discharge machining work; The various subsystems are used for performing discharge machining work according to the discharge machining instructions and feeding back the implemented discharge machining data; The tooling system is used to install and fix the electrode; the pulse power system is used to release high-frequency pulse current; the servo power system is used to drive the electrode close to or away from the workpiece; the flushing system is used to flush the coolant in the discharge machining area; the purification system is used to filter the coolant after flushing; and the grounding system is used for grounding.

[0006] Furthermore, each subsystem also includes a measurement system; the measurement system includes: Mechanical voltmeter, installed on the pulse power supply system, used to display the discharge gap voltage between the electrode and the workpiece; Mechanical ammeter, installed on the pulse power supply system, is used to display the working current delivered to the electrode by the pulse power supply system.

[0007] Furthermore, the discharge machining simulation control system also includes a flexible cable system; the discharge machining control system is connected to the human-computer interaction system, pulse power supply system, servo power system, flushing system, purification system, grounding system and measurement system through the flexible cable system; the tooling system integrates the standard interfaces of the pulse power supply system, servo power system, flushing system, purification system, grounding system and measurement system; the output ends of the pulse power supply system, servo power system, flushing system, purification system, grounding system and measurement system are connected to the corresponding standard interfaces of the tooling system through the flexible cable system.

[0008] Furthermore, the human-computer interaction system is provided with an operation panel, and the human-computer interaction system performs human-computer interaction, including: the operator inputs and sets the discharge machining parameters, imports or edits the discharge machining path through the operation panel; the discharge machining parameters include voltage, current and pulse frequency.

[0009] Furthermore, the human-computer interaction system is also used to store and display abnormal alarm information generated by the electrical discharge machining control system; The EDM control system is also used to judge the abnormality of each subsystem based on the EDM data fed back by each subsystem. If the abnormality judgment result is abnormal, an abnormal alarm message is generated and corresponding processing is carried out according to the preset program; Each subsystem is also used to feed back the data of the electrical discharge machining; Furthermore, the abnormal alarm information includes alarm time, alarm type, duration and elimination time.

[0010] Further, the servo power system drives the electrode to perform movement through the servo motor and mechanical transmission device, simultaneously feeds back position information and load information to the electric discharge machining control system through the encoder and torque sensor of the servo motor and receives dynamic adjustment instructions of the analog PID circuit of the electric discharge machining control system in real time; the end power execution element of the servo power system is selected from radiation-resistant components and local radiation shielding modules, and the radiation tolerance limit is 50 mSv / h.

[0011] Further, the flushing system is composed of a pump group, a nozzle, a conveying pipeline and a flow controller, the pump group pressurizes the flushing medium to a specified pressure, the conveying pipeline is connected to the nozzle installed on the tooling system through a flexible cable system, the nozzle flushes the electric discharge area, removes the etched particles and cools the electric discharge area; the flow controller is installed at the outlet of the pump group close to the conveying pipeline and controls the flow of the flushing medium.

[0012] Further, the purification system is configured with an underwater dust suction and filtering device, which is connected to the standard interface of the tooling system through a flexible cable system and collects the highly radioactive machining products in the electric discharge machining process.

[0013] Further, the grounding system is configured with multiple types of grounding connection devices.

[0014] Further, the electrode and the tooling system are connected using a standard clamp.

[0015] The beneficial technical effects of the present application are as follows: The electric discharge machining simulation control system under the high-radiation boron-containing water environment of the nuclear power plant of the present application takes the electric discharge machining control system as the core, cooperates with the servo power system, the pulse power supply system, the flushing system, the purification system, the grounding system and the human-computer interaction system, receives feedback signals through the analog PID circuit and drives the end power execution element of the servo power system to adjust the position of the electrode, simultaneously cooperates with the control of other on-site device layers, runs cooperatively, controls the electrode and the workpiece to dynamically maintain the electric discharge gap, has strong anti-interference ability and can maintain stable and efficient electric discharge machining operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of an embodiment of the electric discharge machining simulation control system under the high-radiation boron-containing water environment of the nuclear power plant of the present application.

[0017] In the figure, 1. human-computer interaction system; 2. electric discharge machining control system; 3. pulse power supply system; 4. servo power system; 5. flushing system; 6. purification system; 7. grounding system; 8. tooling system; 9. electrode; 10. workpiece. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0019] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another.

[0020] In the description of the application, unless otherwise clearly specified and limited, the terms "setting", "installing", "connecting" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium. The specific meanings of the above terms can be understood according to the specific circumstances for those skilled in the art.

[0021] The terms "comprising", "containing" or any other variant thereof, are intended to cover non-exclusive inclusion, in addition to including the listed elements, other elements not explicitly listed can also be included.

[0022] The technical solutions of the application are described below in detail in combination with the drawings and specific embodiments.

[0023] Referring to Figure 1 The embodiment provides a discharge machining simulation control system in a high-radiation boron-containing water environment of a nuclear power plant, which comprises a man-machine interaction system 1, a discharge machining control system 2 and subsystems; the subsystems comprise a pulse power supply system 3, a servo power system 4, a flushing system 5, a purification system 6, a grounding system 7 and a tooling system 8; The man-machine interaction system 1 is used for man-machine interaction; and discharge machining data fed back by the subsystems and abnormality judgment results generated by the discharge machining control system 2 are displayed; The discharge machining control system 2 is used for generating discharge machining instructions according to man-machine interaction information, controlling the subsystems to cooperate to perform discharge machining work; and performing abnormality judgment on the work of the subsystems according to the discharge machining data fed back by the subsystems, and performing corresponding processing according to a preset program when the abnormality judgment result is abnormal; The subsystems are used for performing discharge machining work according to the discharge machining instructions and feeding back discharge machining data; Tooling system 8 for installing and fixing the electrode 9; pulse power supply system 3 for releasing high-frequency pulse current; servo power system 4 for driving the electrode 9 to approach or move away from the workpiece 10; flushing system 5 for flushing the discharge machining area with cooling liquid; purification system 6 for filtering the flushed cooling liquid; grounding system 7 for grounding.

[0024] The working principle of the discharge machining simulation control system is as follows: after the discharge machining control system 2 is powered on and initialized, it is connected with the pulse power supply system 3, the servo power system 4, the flushing system 5, the purification system 6 and the grounding system 7, and confirms that each subsystem is normal. The discharge machining control system 2 writes parameters and initializes each subsystem according to the given parameters input by the operator in the human-computer interaction system 1, at this time, the output voltage and current and protection setting value of the pulse power supply system 3 are completed, and the response speed, movement speed and overload protection parameters of the servo power system 4 are completed. After starting discharge machining, each subsystem starts working according to the preset parameters and feeds back the machining data, and the discharge machining control system 2 judges whether the work is normal according to the feedback information, and enters the abnormal processing program if it is abnormal.

[0025] In this embodiment, each subsystem further comprises a measurement system, which comprises: A mechanical voltmeter is installed on the pulse power supply system 3 for displaying the discharge gap voltage between the electrode 9 and the workpiece 10. A mechanical ammeter is installed on the pulse power supply system 3 for displaying the working current delivered by the pulse power supply system 3 to the electrode 9.

[0026] The mechanical voltmeter directly displays the discharge gap voltage, the higher the voltage, the farther the position of the electrode 9 and the workpiece 10, at this time the current is smaller, the voltage decreases, indicating that the electrode 9 is closer to the workpiece 10, at this time the current will rise accordingly. According to different electrode 9 sizes, water temperature, electrical conductivity, cable length and other site environments, the voltage and current will have certain changes, but the overall trend is as described above. The position of the electrode 9 and the workpiece 10 described here refers to the relative position or distance of the electrode 9 and the workpiece 10.

[0027] In the embodiment, the discharge machining simulation control system further comprises a flexible cable system; the discharge machining control system 2 is connected to the human-computer interaction system 1, the pulse power supply system 3, the servo power system 4, the flushing system 5, the purification system 6, the grounding system 7 and the measurement system through the flexible cable system; the tooling system 8 integrates standard interfaces of the pulse power supply system 3, the servo power system 4, the flushing system 5, the purification system 6, the grounding system 7 and the measurement system; output ends of the pulse power supply system 3, the servo power system 4, the flushing system 5, the purification system 6, the grounding system 7 and the measurement system are connected to corresponding standard interfaces of the tooling system 8 through the flexible cable system.

[0028] The various cables connecting the discharge machining control system 2 with the human-computer interaction system 1, the pulse power supply system 3, the servo power system 4, the flushing system 5, the purification system 6, the grounding system 7 and the measurement system and the tooling system 8 are located in a high-radiation boron-containing water environment, and the flexible cable system integrates the above cables, which can effectively reduce the subsequent processing time and workload of surface contamination after operation in water and avoid personnel contamination.

[0029] In the embodiment, the human-computer interaction system 1 is provided with an operation panel, and the human-computer interaction system 1 performs human-computer interaction, including: an operator inputs and sets discharge machining parameters and imports or edits a discharge machining path through the operation panel; the discharge machining parameters include voltage, current and pulse frequency.

[0030] In the embodiment, the discharge machining control system 2 judges whether a short circuit, overcurrent or electrode sticking fault occurs according to discharge machining data fed back by each subsystem, and takes a preset protection action and generates an abnormal alarm information if a fault occurs; the human-computer interaction system 1 displays the abnormal alarm information.

[0031] In the embodiment, the human-computer interaction system 1 stores the abnormal alarm information sent by the discharge machining control system 2; the abnormal alarm information includes alarm time, alarm category, duration and elimination time, which are provided for an operator to check.

[0032] In this embodiment, the discharge machining control system 2 is the control core of the discharge machining system, responsible for integrating and coordinating pulse power regulation, servo power system control and electrode motion trajectory planning. The gap voltage and current signals fed back to the discharge machining control system 2 through the flexible cable system are sent to the voltage comparator and analog PID circuit through the relay for operation and comparison. According to certain logic, it can be determined whether the discharge gap voltage / current is overvoltage or overcurrent. Through the comparison of current and voltage, the electrode wear condition, workpiece machining condition and other machining states can be determined and countermeasures can be taken. Through the control of each subsystem, the discharge energy, electrode position, machining path and overcurrent protection, short circuit protection and other means are dynamically adjusted to ensure the stability and controllability of the discharge process, realize high-precision and high-efficiency discharge machining, and the system has built-in special design output voltage, pulse width, current peak value and other regulation circuits, which can adapt to 2400ppm, 45℃ boron-containing water environment, and automatically adjust and maintain stable discharge following the environmental changes, and the system response speed is <1ms. The relay switches the positive and negative polarities. The pulse power needs to be switched when the negative polarity is processed, and the positive polarity is not switched.

[0033] In this embodiment, the pulse power system 3 is the direct energy source in the underwater discharge machining process. The output current, voltage and other parameters are adjusted through the RC charging and discharging circuit and thyristor switch to control the machining speed and machining quality of the workpiece. At the same time, it has the protection functions of input overvoltage and undervoltage, output voltage and current limiting, overcurrent and overvoltage, and overheat, etc., to ensure the surface machining quality while considering the machining speed.

[0034] In this embodiment, the servo power system 4 drives the electrode 9 to perform precise motion through the servo motor and mechanical transmission device, and at the same time, the position information and load information are fed back to the discharge machining control system 2 through the encoder and torque sensor of the servo motor, and the dynamic adjustment instructions of the analog PID circuit of the discharge machining control system 2 are received in real time, to ensure that the electrode 9 realizes high-precision positioning and stable motion in the discharge machining, and to ensure the precise control and process quality of the discharge machining; the end power execution element of the servo power system 4, such as servo motor, servo cylinder and servo valve, is designed by selecting radiation-resistant components and local radiation shielding modules, and the equipment radiation tolerance limit is 50mSv / h.

[0035] In this embodiment, the flushing system 5 is composed of a pump set, a nozzle, a conveying pipeline and a flow controller. The pump set pressurizes the flushing medium to a specified pressure, which is connected to the nozzle installed on the tooling system 8 through the conveying pipeline, to flush the discharge area, remove the etched particles and cool the discharge area; the flow controller is installed near the pump set outlet of the conveying pipeline to control the flow of the flushing medium.

[0036] In this embodiment, the purification system 6 is configured with an underwater dust collection and filtering device, which is connected to the standard interface of the tooling system 8 through a flexible cable system, collects high-radioactive machining products during the EDM process, and avoids the spread of radioactive substances and the generation of foreign matter in the refueling pool.

[0037] In this embodiment, the grounding system 7 is configured with multiple types of grounding connection devices to provide a safe potential reference for the EDM equipment, avoid the risk of electric shock caused by leakage or static electricity accumulation, eliminate the negative effects of electromagnetic interference on control signals and the EDM process, and ensure the stability and precision of the EDM process.

[0038] In this embodiment, the output ends of each subsystem include the nozzle of the flushing system 5, the dust collection connection joint of the purification system 6, the pulse power output cable joint of the pulse power supply system 3 to the electrode clamp, and the servo motor mounting base of the servo power system 4.

[0039] In this embodiment, the electrode 9 is an EDM component for underwater EDM, designed and manufactured according to the machining purpose, connected with the standard clamp of the tooling system 8, and ensures the reliability of the electrical connection with the output cable of the pulse power supply system 3.

[0040] In this embodiment, the flexible cable system connects each system device into a whole system, realizing the transmission of data, power current, and medium; the medium includes water, hydraulic oil, and gas; the system considers radiation resistance performance when designing and selecting materials, ensuring the use time in high radiation environment, and considering the integrity during integration; the on-site construction operation is completed when the water is discharged, which is convenient for decontamination and has an accelerated drainage structure to prevent the retention of contaminated liquid, reduce the radiation protection pressure, and avoid pollution diffusion.

[0041] The EDM simulation control system of the present application, with the EDM control system 2 as the core, cooperates with the servo power system 4, the pulse power supply system 3, the flushing system 5, the purification system 6, the grounding system 7, and the human-machine interaction system 1, functions through the simulation of the PID circuit to receive feedback signals and drive the power execution element at the end of the servo power system to adjust the electrode position, while cooperatively controlling other on-site device layer devices, cooperatively operating, and controlling the electrode and workpiece to dynamically maintain the discharge gap, with strong anti-interference ability, which can maintain stable and efficient EDM operation.

[0042] The EDM simulation control system of the present application is modularly designed, can freely combine and link various on-site layer devices for centralized control according to engineering practice needs, adapts to the signal interference of rays in high radiation environment and the continuous change of environmental temperature and conductivity in boron-containing water environment, and completes the control of EDM operation.

[0043] The present application realizes the centralized and effective control of each field layer device in the electric spark discharge machining operation process in the high radiation boron-containing water environment of a nuclear power plant by selecting radiation-resistant components, local radiation shielding modules, specially designed control circuits and high air pressure sealing structure design, solves the problem that conventional discharge machining equipment cannot be used in the high radiation and boron-containing water environment, and provides a simulated control process technology and equipment for underwater discharge machining of immovable equipment in the special maintenance technical field in the high radiation boron-containing water environment of a nuclear power plant.

[0044] The working steps of the discharge machining simulated control system in the high radiation boron-containing water environment of a nuclear power plant of the present embodiment are as follows: Step 1, parameter setting and initialization stage, install and fix the electrode 9 on the tooling system 8, input the machining parameters through the man-machine interaction system 1; Step 2, system starting and self-checking stage, start the flushing system 5 and the purification system 6, inject the cooling liquid into the machining area, flush and filter the machining area; the discharge machining control system 2 performs subsystem self-checking to confirm that the states of each module are normal; Step 3, electrode 9 positioning stage, the discharge machining control system 2 sends instructions to the servo power system 4 to drive the electrode 9 to approach the workpiece 10 to reach the preset initial discharge gap; the servo power system 4 implements feedback of the electrode 9 position data to realize closed-loop control; Step 4, underwater discharge machining stage, the pulse power system 3 releases high-frequency pulse current to generate spark discharge between the electrode 9 and the workpiece 10 to remove the workpiece material, and the servo power system 4 dynamically adjusts the position of the electrode 9; the flushing system 5 continuously sprays high-pressure cooling liquid to flush away the removed particles and cool the machining area; the purification system 6 filters the impurities in the discharge area to keep the discharge area clean; the man-machine interaction system 1 displays the machining progress, abnormal alarm and the like; the discharge machining control system 2 collects the discharge gap voltage, current and the like in real time and dynamically adjusts the states of each subsystem according to the countermeasures; Step 5, machining completion and post-processing stage, after the workpiece 10 is machined according to the predetermined target, the discharge machining control system 2 closes the pulse power source and controls the servo power system 4 to retreat the electrode 9 to a safe position; the flushing system 5 discharges the waste liquid and cleans the machining area, the purification system 6 recycles the waste liquid to the liquid storage tank; and the man-machine interaction system 1 generates a machining report.

[0045] The discharge machining simulated control system in the high radiation boron-containing water environment of a nuclear power plant of the present application can reliably realize the rapid cutting, hole machining, surface finishing machining, thread machining and the like of various metal parts in the high radiation boron-containing water environment, and simultaneously complete the collection of high-radioactive machining products.

[0046] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A simulation control system for electrical discharge machining in a high-radiation boron-containing water environment in a nuclear power plant, characterized in that: It includes a human-machine interaction system (1), an electrical discharge machining control system (2) and various subsystems; each subsystem includes a pulse power system (3), a servo power system (4), a flushing system (5), a purification system (6), a grounding system (7) and a tooling system (8); Human-machine interaction system (1), used for human-machine interaction; displays the EDM data fed back by each subsystem; The discharge machining control system (2) is used to generate discharge machining instructions based on human-machine interaction information and control each subsystem to cooperate in the discharge machining operation; Each subsystem is used to perform the electric discharge machining work according to the electric discharge machining instruction and feedback the electric discharge machining data; A tooling system (8) is used to install and fix the electrode (9); a pulse power system (3) is used to release high-frequency pulse current; a servo power system (4) is used to drive the electrode (9) to move closer to or away from the workpiece (10); a flushing system (5) is used to flush the discharge machining area with coolant; a purification system (6) is used to filter the flushed coolant; and a grounding system (7) is used for grounding.

2. The electrical discharge machining simulation control system in a high-radiation boron-containing water environment of a nuclear power plant according to claim 1, characterized in that: Each subsystem also includes a measurement system; the measurement system includes: a mechanical voltmeter, mounted on the pulse power supply system (3), for displaying the discharge gap voltage between the electrode (9) and the workpiece (10); A mechanical ammeter is installed on the pulse power supply system (3) and is used to display the working current delivered to the electrode (9) by the pulse power supply system (3).

3. The electrical discharge machining simulation control system in a high-radiation boron-containing water environment of a nuclear power plant according to claim 2, characterized in that: Also included is a flexible cable system; The discharge machining control system (2) is connected to the human-machine interaction system (1), the pulse power system (3), the servo power system (4), the flushing system (5), the purification system (6), the grounding system (7) and the measurement system through a flexible cable system; The tooling system (8) integrates the standard interfaces of the pulse power system (3), the servo power system (4), the flushing system (5), the purification system (6), the grounding system (7) and the measurement system; the output terminals of the pulse power system (3), the servo power system (4), the flushing system (5), the purification system (6), the grounding system (7) and the measurement system are connected to the corresponding standard interfaces of the tooling system (8) through a flexible cable system.

4. The electrical discharge machining simulation control system in a high-radiation boron-containing water environment of a nuclear power plant according to claim 1, characterized in that: The human-machine interaction system (1) is provided with an operation panel. The human-machine interaction system (1) performs human-machine interaction, including: an operator inputs and sets discharge machining parameters, and imports or edits discharge machining paths through the operation panel; the discharge machining parameters include voltage, current, and pulse frequency.

5. The electrical discharge machining simulation control system in a high-radiation boron-containing water environment of a nuclear power plant according to claim 1, characterized in that: The human-machine interaction system (1) is further used to store and display abnormal alarm information generated by the electrical discharge machining control system (2); The discharge machining control system (2) is further used to judge the abnormality of each subsystem based on the discharge machining data fed back by each subsystem. If the abnormality judgment result is abnormal, an abnormality alarm message is generated and corresponding processing is performed according to a preset program; Each subsystem is also used to feed back the EDM data.

6. The electrical discharge machining simulation control system in a high-radiation boron-containing water environment of a nuclear power plant according to claim 5, characterized in that: Abnormal alarm information includes alarm time, alarm type, duration and elimination time.

7. The electrical discharge machining simulation control system in a high-radiation boron-containing water environment of a nuclear power plant according to claim 1, characterized in that: The servo power system (4) drives the electrode (9) to perform movement through the servo motor and the mechanical transmission device, and at the same time feeds back position information and load information to the discharge machining control system (2) through the encoder and torque sensor provided by the servo motor, and receives dynamic adjustment instructions of the analog PID circuit of the discharge machining control system (2) in real time; the terminal power actuator of the servo power system (4) uses radiation-resistant components and a local radiation shielding module, and the radiation tolerance limit is 50mSv / h.

8. The electrical discharge machining simulation control system in a high-radiation boron-containing water environment of a nuclear power plant according to claim 2, characterized in that: The flushing system (5) consists of a pump group, a nozzle, a delivery pipeline and a flow controller. The pump group pressurizes the flushing medium to a specified pressure and is connected to the nozzle installed on the tooling system (8) through a flexible cable system to flush the discharge area, remove the eroded particles, and cool the discharge area. The flow controller is installed on the delivery pipeline near the pump group outlet to control the flow of the flushing medium.

9. The electrical discharge machining simulation control system in a high-radiation boron-containing water environment of a nuclear power plant according to claim 2, characterized in that: The purification system (6) is equipped with an underwater dust collection and filtering device, which is connected to the standard interface of the tooling system (8) through a flexible cable system to collect highly radioactive processing products during the discharge machining process.

10. The electrical discharge machining simulation control system in a high radiation boron-containing water environment of a nuclear power plant according to claim 1, characterized in that: The grounding system (7) is equipped with various types of grounding connection devices; the electrode (9) is connected to the tooling system (8) using a standard fixture.

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