An electric rust removal device inside a pressure vessel and its control system

Abstract

The present invention discloses an electric rust removal device for the inside of a pressure vessel and its control system, which relates to the field of pressure vessel application technology, including a high-pressure nozzle device, a rotating device, a wire brush retracting device and a PLC control system. The high-pressure nozzle device sprays high-pressure water through multiple ceramic nozzles to achieve rapid cleaning of the rusted surface; the rotating device is driven by a motor, and drives the high-pressure nozzle and the wire brush body to rotate through an external shaft to improve the rust removal coverage rate; the wire brush retracting device controls the length of the wire brush through an electric push rod and a spring to achieve precise grinding of stubborn rust. The PLC control system coordinates the various components to work together to provide an efficient and labor-saving solution for rust removal inside pressure vessels. The present invention solves the problems of low efficiency of traditional manual grinding and single-function equipment, and realizes efficient, precise and labor-saving rust removal operations inside pressure vessels.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure vessel applications, in particular to an electric rust removal device inside a pressure vessel and a control system thereof. Background Art

[0002] Pressure vessels are widely used in industrial production and are usually used to store liquid or gaseous media. However, due to factors such as medium corrosion, high temperature or humid environment, rust is prone to occur inside pressure vessels, affecting their service life and safety. Traditional rust removal methods mostly use manual polishing or chemical cleaning, but these methods have the disadvantages of low efficiency, poor safety and potential damage to equipment or the environment. In addition, some automated rust removal devices on the market can usually only clean specific areas, which is difficult to meet the needs of full coverage and efficient rust removal. Therefore, there is an urgent need for an efficient, safe and suitable equipment for rust removal inside complex structures to improve cleaning quality and extend equipment life. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention aims to provide a pressure vessel rust removal device to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] An electric rust removal device for the interior of a pressure vessel includes a high-pressure nozzle device, a rotating device, and a wire brush retracting device; the high-pressure nozzle device includes a motor 1, an outer shaft 2, a high-pressure nozzle 6, a water pipe 7, and an external water pipe 12; a control element of the high-pressure nozzle 6 is connected to the motor 1 via the outer shaft 2; the high-pressure nozzle 6 is provided with a water inlet, which is connected to an external high-pressure water source via the water pipe 7 and the external water pipe 12;

[0006] The rotating device includes a motor 1, an outer shaft 2, and a rotating arm 8. The outer shaft 2 of the rotating mechanism of the high-pressure nozzle 6 and the wire brush body 5 adopts a gear transmission. The motor 1 drives the gear to rotate the outer shaft 2, causing the rotating arm 8 connected to the outer shaft 2 to rotate, thereby driving the wire brush body 5 set at the end of the rotating arm 8 to rotate, and at the same time driving the high-pressure nozzle 6 set on the outer shaft 2 to rotate;

[0007] The wire brush telescopic device includes a wire brush body 5, a cylinder 4, and a spring 9. The wire brush body 5 is connected to the rotating arm 8 through the cylinder 4, and the cylinder 4 is connected to the outer shaft 2 through the spring 9. A control element is provided on the cylinder 4 for controlling the telescopic length of the wire brush body 5.

[0008] It also includes an electric push rod 3 connected at both ends on the outer shaft 2 and the cylinder 4 respectively, and the wire brush body 5 is extended by activating the electric push rod 3 and the control element on the spring 9; the spring 9 is installed between the wire brush body 5 and the outer shaft 2, and serves as an auxiliary component of the wire brush extension device to provide rebound force, and cooperate with the electric push rod 3 to adjust the extension and retraction action of the wire brush body 5; the spring 9 is made of high-strength elastic steel.

[0009] The surface of the wire brush body 5 is coated with a rust preventive and a lubricant. The wire brush body 5 is woven from a plurality of fine steel wires and has wear resistance and flexibility.

[0010] A plurality of ceramic nozzles are provided inside the main body of the high-pressure nozzle 6 .

[0011] The water pipe 7 is located inside the outer shaft 2, and the outer shaft 2 is made of high-strength steel and the surface is treated with anti-corrosion. The water pipe 7 is made of a high-pressure resistant and corrosion-resistant composite material to ensure that no leakage or damage occurs during long-term operation. Quick connectors are provided at both ends of the water pipe 7.

[0012] The rotating arm 8 is made of a light alloy material and is designed to be a retractable structure, which can support the wire brush body to penetrate into the curved or narrow areas inside the container for cleaning;

[0013] The cylinder 4 is made of corrosion-resistant high-strength metal material and directly controls the expansion and contraction of the wire brush body.

[0014] It also includes a rust removal cover 11 arranged on the upper part of the outer shaft 2. The rust removal cover 11 is tightly matched with the opening of the pressure vessel to be rusted. A sealing ring is embedded in the edge of the rust removal cover 11, and threads and grooves are set on the contact surface with the outer shaft 2.

[0015] The control system of the electric rust removal device inside the pressure vessel includes a control element, a PLC control system and a handle operation terminal for operating the PLC control system. The control elements are independently controlled and are all equipped with safety protection devices; the PLC control system is controlled by a PLC controller and operated through the handle operation terminal.

[0016] The PLC control system includes a PLC main control module, a start and stop control module, a high-pressure nozzle control module, a wire brush control module, an emergency stop control module, a safety protection and alarm module, a fault diagnosis and maintenance module, and a user interface and operation module;

[0017] The PLC main control module serves as the core control unit and is responsible for receiving input signals, performing logical operations, and coordinating the work between various modules, including the control of the start and stop control module, the high-pressure nozzle control module, the wire brush control module, and the safety protection and alarm module; and realizing data monitoring, status feedback, and fault diagnosis;

[0018] The start and stop control module has a start logic such that when the operator inputs a start signal on the handle operation terminal, the PLC of the start and stop control module receives the signal and activates the high-pressure nozzle control module and the wire brush control module to start the rust removal operation; the stop logic such that when the operator inputs a stop signal, the PLC of the start and stop control module shuts down the high-pressure nozzle control module and the wire brush control module to stop the operation of the electric rust removal device inside the pressure vessel;

[0019] When the high-pressure nozzle control module enters the rust removal mode, the PLC of the high-pressure nozzle control module activates the high-pressure nozzle 6, and the high-pressure nozzle 6 rotates inside the pressure vessel through the rotation of the outer shaft 2, and the water flow fully covers the pressure vessel; the PLC of the high-pressure nozzle control module adjusts the control elements according to the actual rust removal needs, so that the number of activated nozzles is 1 to 6;

[0020] When the wire brush control module receives a rust removal mode signal, the PLC of the wire brush control module controls the motor 1 to drive the outer shaft 2, driving the rotating arm 8 to rotate, so that the wire brush body 5 rotates; when receiving a stop signal, the PLC of the wire brush control module controls the motor 1 to stop, shutting down the rotation of the wire brush body 5; the PLC of the wire brush control module extends the wire brush body 5 by activating the control elements on the electric push rod 3 and the spring 9;

[0021] The emergency stop control module monitors the emergency stop signal in real time; when the emergency stop signal is received, the PLC of the emergency stop control module immediately shuts down the motor 1, the high-pressure nozzle 6 and the wire brush body 5, and triggers a safety alarm signal, while ensuring that the machine enters a safe shutdown state;

[0022] The safety protection and alarm module continuously monitors the operating status of the high-pressure nozzle control module and the wire brush control module. When any abnormality is detected, the PLC of the safety protection and alarm module will trigger an alarm signal and output fault information, and at the same time shut down the electric rust removal device inside the pressure vessel to ensure safe shutdown. In the event of a fault, the handle operation terminal will display specific fault information;

[0023] The fault diagnosis and maintenance module monitors the status of the electric rust removal device inside the pressure vessel in real time to detect whether there is a fault; when a fault is detected, the PLC of the fault diagnosis and maintenance module will display the fault code and provide relevant information and maintenance suggestions for troubleshooting through the handle operation terminal.

[0024] The user interface and operation module display the working status of the electric rust removal device inside the pressure vessel in real time, including the rotation speed of the high-pressure nozzle 6, the start and stop status of the high-pressure nozzle 6, the rotation speed and telescopic length of the wire brush body 5; the operator adjusts the rust removal mode, the number of high-pressure nozzles 6 started, the rotation speed and telescopic length parameters of the wire brush body 5 through the handle operation terminal, and the PLC of the user interface and operation module will adjust the rotation speed and the number of high-pressure nozzles 6 started, and the telescopic length of the wire brush body 5 in the electric rust removal device inside the pressure vessel according to the control signal input by the user, and feedback the operating status; the operation interface provides fault information and maintenance suggestions.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1) This invention significantly improves the efficiency of rust removal inside pressure vessels by combining a high-pressure nozzle with a retractable wire brush. Compared to existing methods that rely on single spraying or manual brushing, the high-pressure nozzle of this invention evenly sprays high-pressure water to effectively remove loose rust, while the wire brush deeply cleans stubborn rust. This dual action ensures comprehensive and efficient cleaning.

[0027] 2) This invention utilizes a rotating mechanism that enables the high-pressure nozzle and wire brush to rotate 360 ​​degrees, effectively reaching every corner of the pressure vessel, especially curved and narrow areas. This design provides a wider cleaning range than traditional static nozzles and brushes, eliminating blind spots that may be left unreached.

[0028] 3) This invention incorporates a PLC control system, enabling automated operation and significantly simplifying the operational process. Compared to existing devices that require manual intervention and adjustment, this invention utilizes a handle control system for one-touch start-up, mode selection, and parameter adjustment, reducing the potential for human error and inconvenience, making the device more intelligent and easier to operate.

[0029] 4) This invention utilizes corrosion-resistant, high-strength materials to ensure the long-term, stable operation of the high-pressure nozzle, wire brush, and other key components in harsh environments. Furthermore, the device incorporates multiple safety features, including overload protection, emergency stop, and fault alarms, ensuring safe operation under all operating conditions and enhancing overall reliability.

[0030] 5) This invention utilizes high-pressure water for rust removal, eliminating the need for chemical rust removers and complying with environmental protection requirements. Compared to existing methods that rely on chemical cleaning agents, this invention not only reduces environmental pollution but also avoids the potential risks to equipment or operators posed by chemical agents, achieving a greener, more environmentally friendly cleaning method. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of an electric rust removal device inside a pressure vessel provided by the present invention.

[0032] Figure 2 This is a program flow chart of a control system for an electric rust removal device inside a pressure vessel provided by the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the preferred implementation examples described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0034] like Figure 1 As shown, the present invention provides an electric rust removal device for the inside of a pressure vessel, which is characterized in that it includes a high-pressure nozzle device, a rotating device and a wire brush telescopic device, specifically including a motor 1, an outer shaft 2, an electric push rod 3, a cylinder 4, a wire brush body 5, a high-pressure nozzle 6, a water pipe 7, a rotating arm 8, a spring 9, an external wire 10, a rust removal cover 11, and an external water pipe 12.

[0035] The high-pressure nozzle device includes a motor 1, an external shaft 2, a high-pressure nozzle 6, a water pipe 7, and an external water pipe 12. The control element of the high-pressure nozzle 6 is connected to the motor 1 through the external shaft 2; the high-pressure nozzle 6 is provided with a water inlet, which is connected to an external high-pressure water source through the water pipe 7 and the external water pipe 12;

[0036] The rotating device includes a motor 1, an outer shaft 2, and a rotating arm 8. The outer shaft 2 of the rotating mechanism of the high-pressure nozzle 6 and the wire brush body 5 adopts a gear transmission. The motor 1 drives the gear to rotate the outer shaft 2, causing the rotating arm 8 connected to the outer shaft 2 to rotate, thereby driving the wire brush body 5 set at the end of the rotating arm 8 to rotate, and at the same time driving the high-pressure nozzle 6 set on the outer shaft 2 to rotate;

[0037] The wire brush telescopic device includes a wire brush body 5, a cylinder 4, and a spring 9. The wire brush body 5 is connected to the rotating arm 8 through the cylinder 4, and the cylinder 4 is connected to the outer shaft 2 through the spring 9. A control element is provided on the cylinder 4 for controlling the telescopic length of the wire brush body 5.

[0038] Furthermore, motor 1 is the core driving component of the device, providing power for the rotating device and other mechanical movements. It adopts a variable frequency speed control design, which can adjust the speed according to the cleaning needs to ensure the synchronous rotation of the high-pressure nozzle 6 and the wire brush body 5. At the same time, motor 1 has an overload protection function to prevent damage to the equipment caused by long-term operation.

[0039] Furthermore, the outer shaft 2 is connected to the motor 1 via a gear transmission system and is a key component connecting the high-pressure nozzle 6 and the wire brush body 5. Made of high-strength steel with an anti-corrosion surface treatment, the outer shaft 2 is designed to withstand the friction of high-speed rotation and the humid environment inside the pressure vessel. Both ends of the outer shaft 2 are tightly connected to the rotating device and the wire brush body 5, ensuring efficient power transmission.

[0040] Furthermore, the electric push rod 3 is a key actuator in the wire brush extension and retraction mechanism, responsible for adjusting the extension and retraction length of the wire brush body 5. The electric push rod 3 utilizes a linear drive structure, which controls its retraction and retraction, allowing the wire brush to flexibly adapt to the complex shape of the pressure vessel's inner wall. The electric push rod 3 offers high precision and low noise, and is equipped with a limit switch to prevent over-extension.

[0041] Furthermore, the cylinder 4 is the connecting structure of the device, connecting the wire brush body 5 and the outer shaft 2, and is made of corrosion-resistant high-strength metal material to directly control the expansion and contraction of the wire brush body 5.

[0042] Furthermore, the wire brush body 5 is woven from 50 high-strength fine steel wires, offering excellent wear resistance and flexibility. Connected to the outer shaft 2 via a rotating arm 8, the wire brush body 5 is driven by an electric push rod 3, telescoping to remove stubborn rust. The brush body is coated with a rust inhibitor and lubricant, enhancing rust removal and forming a protective layer after cleaning.

[0043] Furthermore, the high-pressure nozzle 6 is the device's primary cleaning component, consisting of six ceramic nozzles. Connected to a high-pressure water pump via a water pipe, the nozzle 6 sprays high-pressure water to impact and remove rusted surfaces. The ceramic nozzles are wear-resistant and precise, and the spray angle and quantity can be adjusted as needed, making them suitable for various cleaning scenarios.

[0044] Furthermore, water pipe 7 connects the high-pressure water pump to the high-pressure nozzle 6, responsible for delivering the high-pressure water flow. Made of a high-pressure, corrosion-resistant composite material, water pipe 7 is designed to prevent leakage or damage during extended operation. Quick connectors are installed at both ends of water pipe 7 for easy installation and replacement.

[0045] Furthermore, the rotating arm 8 is an important component of the rotating device, which is tightly combined with the outer shaft 2 and the electric push rod 3 and is made of lightweight alloy material, which can not only reduce the weight of the equipment but also withstand the centrifugal force during rotation; the rotating arm 6 is designed as a retractable structure, which can support the wire brush body 5 to penetrate into the curved or narrow areas inside the pressure vessel for cleaning.

[0046] Furthermore, spring 9 is installed between the wire brush body 5 and the outer shaft 2 as an auxiliary component of the wire brush extension and retraction mechanism. Spring 9 provides a rebound force, cooperating with the electric push rod 3 to adjust the extension and retraction of the wire brush body 5, allowing it to flexibly adapt to the complex shape of the pressure vessel's inner wall. Spring 9 is made of high-strength elastic steel and has excellent fatigue resistance.

[0047] Furthermore, external wires 10 are used to connect motor 1, the control system, and other electric components, providing power support and signal transmission. External wires 10 utilize a double-layer insulation design, with an outer layer made of wear-resistant and waterproof material and an inner layer composed of a high-quality conductive copper core, ensuring safety and stability in high-humidity and high-voltage environments.

[0048] Furthermore, the rust removal cover 11 fits tightly against the opening of the pressure vessel, providing both sealing and support. A sealing ring is embedded in the edge of the cover, and threads and slots are incorporated into the connection with the pressure vessel body to ensure a tight seal during operation. The rust removal cover 11 is constructed from a high-strength alloy material, capable of withstanding the impact forces generated by high-pressure cleaning operations.

[0049] Furthermore, the external water pipe 12 is used to connect the high-pressure water source and the water pipe 7 to provide a stable water flow supply for the high-pressure nozzle 6. The external water pipe 12 adopts a flexible design to adapt to the installation requirements of various working environments, and is tightly connected to the device body through a high-pressure resistant joint to ensure smooth water flow during operation.

[0050] like Figure 2 As shown, the present invention provides a control system for an electric rust removal device inside a pressure vessel, wherein the PLC control system includes a control element, a PLC control system, and a handle operation terminal for operating the PLC control system. The control elements are independently controlled and are each provided with a safety protection device; the PLC control system is controlled by a PLC controller and operated through the handle operation terminal.

[0051] Furthermore, the handle operation terminal is connected to the main control unit through a signal line, adopts an ergonomic design, and the shell is made of wear-resistant and non-slip materials. It integrates physical buttons for start, stop, mode selection and emergency stop, and is also equipped with knobs and sliding controls for adjusting the operating parameters of the equipment.

[0052] The PLC control system includes a PLC main control module, a start and stop control module, a high-pressure nozzle control module, a wire brush control module, an emergency stop control module, a safety protection and alarm module, a fault diagnosis and maintenance module, and a user interface and operation module;

[0053] The PLC main control module serves as the core control unit and is responsible for receiving input signals, performing logical operations, and coordinating the work between various modules, including the control of the start and stop control module, the high-pressure nozzle control module, the wire brush control module, and the safety protection and alarm module; and realizing data monitoring, status feedback, and fault diagnosis;

[0054] The start and stop control module has a start logic such that when the operator inputs a start signal on the handle operation terminal, the PLC of the start and stop control module receives the signal and activates the high-pressure nozzle control module and the wire brush control module to start the rust removal operation; the stop logic such that when the operator inputs a stop signal, the PLC of the start and stop control module shuts down the high-pressure nozzle control module and the wire brush control module to stop the operation of the electric rust removal device inside the pressure vessel;

[0055] When the high-pressure nozzle control module enters the rust removal mode, the PLC of the high-pressure nozzle control module activates the high-pressure nozzle 6, and the high-pressure nozzle 6 rotates inside the pressure vessel through the rotation of the outer shaft 2, and the water flow fully covers the pressure vessel; the PLC of the high-pressure nozzle control module adjusts the control elements according to the actual rust removal needs, so that the number of activated nozzles is 1 to 6;

[0056] When the wire brush control module receives a rust removal mode signal, the PLC of the wire brush control module controls the motor 1 to drive the outer shaft 2, driving the rotating arm 8 to rotate, so that the wire brush body 5 rotates; when receiving a stop signal, the PLC of the wire brush control module controls the motor 1 to stop, shutting down the rotation of the wire brush body 5; the PLC of the wire brush control module extends the wire brush body 5 by activating the control elements on the electric push rod 3 and the spring 9;

[0057] The emergency stop control module monitors the emergency stop signal in real time; when the emergency stop signal is received, the PLC of the emergency stop control module immediately shuts down the motor 1, the high-pressure nozzle 6 and the wire brush body 5, and triggers a safety alarm signal, while ensuring that the machine enters a safe shutdown state;

[0058] The safety protection and alarm module continuously monitors the operating status of the high-pressure nozzle control module and the wire brush control module. When any abnormality is detected, the PLC of the safety protection and alarm module will trigger an alarm signal and output fault information, and at the same time shut down the electric rust removal device inside the pressure vessel to ensure safe shutdown. In the event of a fault, the handle operation terminal will display specific fault information;

[0059] The fault diagnosis and maintenance module monitors the status of the electric rust removal device inside the pressure vessel in real time to detect whether there is a fault; when a fault is detected, the PLC of the fault diagnosis and maintenance module will display the fault code and provide relevant information and maintenance suggestions for troubleshooting through the handle operation terminal.

[0060] The user interface and operation module display the working status of the electric rust removal device inside the pressure vessel in real time, including the rotation speed of the high-pressure nozzle 6, the start and stop status of the high-pressure nozzle 6, the rotation speed and telescopic length of the wire brush body 5; the operator adjusts the rust removal mode, the number of high-pressure nozzles 6 started, the rotation speed and telescopic length parameters of the wire brush body 5 through the handle operation terminal, and the PLC of the user interface and operation module will adjust the rotation speed and the number of high-pressure nozzles 6 started, and the telescopic length of the wire brush body 5 in the electric rust removal device inside the pressure vessel according to the control signal input by the user, and feedback the operating status; the operation interface provides fault information and maintenance suggestions.

[0061] When the user needs to remove rust, further connect the external water pipe 12 to the high-pressure water pump to ensure normal high-pressure water supply; connect the external wire 10 to the PLC control system and power supply. Check whether all connections are secure, especially the sealing ring between the rust removal cover 11 and the pressure vessel opening, to ensure that there is no water leakage.

[0062] Furthermore, the operator sends a start command through the handle operation terminal, and the PLC control system activates the motor 1, outer shaft 2, electric push rod 3, cylinder 4, wire brush body 5, high-pressure nozzle 6 and rotating arm 8 in sequence; completes self-inspection according to the sensor feedback information, and starts to execute the cleaning task after confirming that all components are operating normally.

[0063] Furthermore, according to the rust condition in the pressure vessel, a suitable cleaning mode is selected through the handle operation terminal: high-pressure cleaning mode: start the high-pressure nozzle 6 and use high-pressure water flow to remove floating rust; deep cleaning mode: start the wire brush body 5 and remove stubborn rust by rotation and extension; comprehensive cleaning mode: the high-pressure nozzle 6 and the wire brush body 5 work together to comprehensively treat various types of rust.

[0064] Furthermore, during operation, the PLC control system dynamically adjusts the operating parameters of each component based on real-time monitoring data. For example, if the sensor detects an area with less corrosion, the number of high-pressure nozzles will be reduced or the speed of the wire brush body 5 will be lowered; if a complex area is detected, the extension length of the wire brush body 5 will be increased or the intensity of the high-pressure water flow will be increased.

[0065] Furthermore, if an abnormality occurs during operation, such as unstable water pressure or motor overload, the PLC control system triggers the emergency stop program, shuts down the high-pressure nozzle 6, the wire brush body 5 and the motor 1 in sequence, and reminds the operator to check the problem through sound and light alarms.

[0066] Furthermore, after cleaning is completed, the operator sends a stop command through the handle operation terminal, and the system shuts down each component in turn and automatically resets to the initial state to prepare for the next cleaning task.

Claims

1. A control system for an electric rust removal device for the interior of a pressure vessel, the electric rust removal device for the interior of a pressure vessel comprising a high-pressure nozzle device, a rotating device and a wire brush telescopic device; the high-pressure nozzle device comprising a motor (1), an outer shaft (2), a high-pressure nozzle (6), a water pipe (7) and an external water pipe (12); a control element of the high-pressure nozzle (6) is connected to the motor (1) via the outer shaft (2); the high-pressure nozzle (6) is provided with a water inlet, which is connected to an external high-pressure water source via the water pipe (7) and the external water pipe (12); The rotating device comprises a motor (1), an outer shaft (2), and a rotating arm (8). The outer shaft (2) of the rotating mechanism of the high-pressure nozzle (6) and the wire brush body (5) adopts gear transmission. The motor (1) drives the gear to rotate the outer shaft (2), causing the rotating arm (8) connected to the outer shaft (2) to rotate, thereby driving the wire brush body (5) arranged at the end of the rotating arm (8) to rotate, and at the same time driving the high-pressure nozzle (6) arranged on the outer shaft (2) to rotate; The wire brush telescopic device comprises a wire brush body (5), a cylinder (4), and a spring (9); the wire brush body (5) is connected to the rotating arm (8) via the cylinder (4), and the cylinder (4) is connected to the outer shaft (2) via the spring (9); a control element is provided on the cylinder (4) for controlling the telescopic length of the wire brush body (5); It also includes an electric push rod (3) connected to the outer shaft (2) and the cylinder (4) at both ends, and the wire brush body (5) is extended by activating the electric push rod (3) and the control element on the spring (9); The spring (9) is installed between the wire brush body (5) and the outer shaft (2) and serves as an auxiliary component of the wire brush telescopic device to provide a rebound force and cooperate with the electric push rod (3) to adjust the telescopic action of the wire brush body (5); The control system includes control elements, a PLC control system, and a handle operation terminal for operating the PLC control system. The control elements are independently controlled and are equipped with safety protection devices. The PLC control system is controlled by a PLC controller and operated by the handle operation terminal. It is characterized by: The PLC control system includes a PLC main control module, a start and stop control module, a high-pressure nozzle control module, a wire brush control module, an emergency stop control module, a safety protection and alarm module, a fault diagnosis and maintenance module, and a user interface and operation module; The PLC main control module serves as the core control unit and is responsible for receiving input signals, performing logical operations, and coordinating the work between various modules, including the control of the start and stop control module, the high-pressure nozzle control module, the wire brush control module, and the safety protection and alarm module; and realizing data monitoring, status feedback, and fault diagnosis; The start and stop control module has a start logic such that when the operator inputs a start signal on the handle operation terminal, the PLC of the start and stop control module receives the signal and activates the high-pressure nozzle control module and the wire brush control module to start the rust removal operation; the stop logic such that when the operator inputs a stop signal, the PLC of the start and stop control module shuts down the high-pressure nozzle control module and the wire brush control module to stop the operation of the electric rust removal device inside the pressure vessel; The high-pressure nozzle control module, when entering the rust removal mode, the PLC of the high-pressure nozzle control module starts the high-pressure nozzle (6), and the high-pressure nozzle (6) rotates inside the pressure vessel through the rotation of the outer shaft (2), and the water flow fully covers the pressure vessel; the PLC of the high-pressure nozzle control module adjusts the control element according to the actual rust removal requirements, so that the number of the started nozzles is 1 to 6; The wire brush control module, when receiving a rust removal mode signal, controls the motor (1) of the wire brush control module to drive the outer shaft (2), thereby driving the rotating arm (8) to rotate and causing the wire brush body (5) to rotate; when receiving a stop signal, controls the motor (1) of the wire brush control module to stop and stop the rotation of the wire brush body (5); and the PLC of the wire brush control module extends the wire brush body (5) by activating the electric push rod (3) and the control element on the spring (9); The emergency stop control module monitors the emergency stop signal in real time; when the emergency stop signal is received, the PLC of the emergency stop control module immediately shuts down the motor (1), the high-pressure nozzle (6) and the wire brush body (5), and triggers a safety alarm signal, while ensuring that the machine enters a safe shutdown state; The safety protection and alarm module continuously monitors the operating status of the high-pressure nozzle control module and the wire brush control module. When any abnormality is detected, the PLC of the safety protection and alarm module will trigger an alarm signal and output fault information, and at the same time shut down the electric rust removal device inside the pressure vessel to ensure safe shutdown. In the event of a fault, the handle operation terminal will display specific fault information; The fault diagnosis and maintenance module monitors the status of the electric rust removal device inside the pressure vessel in real time to detect whether there is a fault; when a fault is detected, the PLC of the fault diagnosis and maintenance module will display the fault code and provide relevant information and maintenance suggestions for troubleshooting through the handle operation terminal.

2. The control system of the electric rust removal device inside a pressure vessel according to claim 1, characterized in that: The user interface and the operation module display the working status of the electric rust removal device inside the pressure vessel in real time, including the rotation speed of the high-pressure nozzle (6), the start and stop status of the high-pressure nozzle (6), the rotation speed and the telescopic length of the wire brush body (5); the operator adjusts the rust removal mode, the number of high-pressure nozzles (6) started, the rotation speed of the wire brush body (5) and the telescopic length parameters through the handle operation terminal, and the PLC of the user interface and the operation module adjusts the rotation speed and the number of high-pressure nozzles (6) started, and the telescopic length of the wire brush body (5) in the electric rust removal device inside the pressure vessel according to the control signal input by the user, and feeds back the operating status; the operation interface provides fault information and maintenance suggestions.

3. The control system of the electric rust removal device inside a pressure vessel according to claim 1, characterized in that: The spring (9) is made of high-strength elastic steel.

4. The control system of the electric rust removal device inside a pressure vessel according to claim 1, characterized in that: The surface of the wire brush body (5) is coated with a rust preventive and a lubricant. The wire brush body (5) is woven from a plurality of thin steel wires and has wear resistance and flexibility.

5. The control system of the electric rust removal device inside a pressure vessel according to claim 1, characterized in that: A plurality of ceramic nozzles are provided inside the main body of the high-pressure nozzle (6).

6. The control system of the electric rust removal device inside a pressure vessel according to claim 1, characterized in that: The water pipe (7) is located inside the outer shaft (2), and the outer shaft (2) is made of high-strength steel and its surface is treated with anti-corrosion. The water pipe (7) is made of a high-pressure resistant and corrosion-resistant composite material to ensure that no leakage or damage occurs during long-term operation. Quick connectors are provided at both ends of the water pipe (7).

7. The control system of the electric rust removal device for the interior of a pressure vessel according to claim 1, characterized in that: The rotating arm (8) is made of a light alloy material and is designed as a retractable structure, which can support the wire brush body to penetrate into the curved or narrow area inside the container for cleaning; The cylinder (4) is made of corrosion-resistant high-strength metal material and directly controls the expansion and contraction of the wire brush body.

8. The control system of the electric rust removal device inside a pressure vessel according to claim 1, characterized in that: The invention also includes a rust removal cover (11) arranged on the upper part of the outer shaft (2). The rust removal cover (11) is tightly matched with the opening of the pressure vessel to be rusted. A sealing ring is embedded in the edge of the rust removal cover (11), and a thread and a groove are provided on the contact surface with the outer shaft (2).

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