Electric derusting device in pressure vessel and control system thereof

Abstract

The invention discloses an electric rust removal device in a pressure vessel and a control system thereof, and relates to the technical field of pressure vessel application, and the electric rust removal device comprises a high-pressure spray head device, a rotating device, a steel wire brush telescopic device and a PLC control system. The high-pressure spray head device sprays high-pressure water flow through a plurality of ceramic nozzles, so that quick cleaning of the rusted surface is realized; the rotating device is driven by a motor and drives the high-pressure nozzle and the steel wire brush body to rotate through an outer shaft, and the rust removal coverage rate is increased; the steel wire brush telescopic device controls the length of a steel wire brush through an electric push rod and a spring, and precise polishing of stubborn rust is achieved. The PLC control system coordinates all the components to work cooperatively, and an efficient and labor-saving pressure vessel interior rust removal solution is provided. The problems of traditional manual polishing and single function and low efficiency of equipment are solved, and efficient, accurate and labor-saving rust removal operation on the interior of the pressure container is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessel application, 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, usually for storing liquid or gaseous media. However, due to factors such as medium corrosion, high temperature or humid environment, rust is prone to occur inside the pressure vessel, affecting its service life and safety. Traditional rust removal methods mostly use manual grinding 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 purpose of the present invention is 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 inside of a pressure vessel, comprising a high-pressure nozzle device, a rotating device and a wire brush telescopic device; the high-pressure nozzle device comprises a motor 1, an outer 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 outer shaft 2; the high-pressure nozzle 6 is provided with a water inlet, and is connected to an external high-pressure water source through 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 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;

[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 control elements on the electric push rod 3 and 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 preventer and a lubricant. The wire brush body 5 is woven from a plurality of thin steel wires and has wear resistance and flexibility.

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

[0011] The water pipe 7 is located inside the outer shaft 2, the outer shaft 2 is made of high-strength steel and the surface is anti-corrosion treated; the water pipe 7 is made of a high-pressure resistant and corrosion-resistant composite material to ensure that no leakage or breakage 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 as a retractable structure, which can support the wire brush body to penetrate into the curved or narrow area 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 container 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, as the core control unit, is responsible for receiving input signals, performing logical operations, and coordinating the work between 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 realizes data monitoring, status feedback, and fault diagnosis;

[0018] The start and stop control module has a start logic in which when the operator inputs a start signal at 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 is 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] 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;

[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 receiving the emergency stop signal, 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; when a fault occurs, 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 starts of the high-pressure nozzle 6, 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 starts of the high-pressure nozzle 6, 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) The present invention greatly improves the efficiency of rust removal inside the pressure vessel by combining the high-pressure nozzle device and the wire brush telescopic device. Compared with the single spraying or manual brushing method in the prior art, the high-pressure nozzle of the present invention can evenly spray high-pressure water flow to effectively remove floating rust, while the wire brush can deeply clean stubborn rust. The dual effects ensure the comprehensiveness and efficiency of the cleaning effect.

[0027] 2) The present invention adopts a rotating device to enable the high-pressure nozzle and wire brush to rotate 360 ​​degrees, covering every corner inside the pressure vessel, especially curved and narrow areas. Compared with traditional static nozzles and brushes, this design can provide a wider cleaning range and avoid cleaning dead corners caused by inability to reach certain areas.

[0028] 3) The present invention combines a PLC control system to achieve automated operation, greatly simplifying the operation process. Compared with the equipment in the prior art that requires manual intervention and adjustment, the present invention uses a handle control system to perform one-button start, mode selection, and parameter adjustment, reducing errors and inconveniences in manual operation, making the equipment more intelligent and easy to operate.

[0029] 4) The present invention adopts corrosion-resistant and high-strength materials to ensure that the high-pressure nozzle, wire brush and other key components can work stably and long-term in harsh environments. In addition, the equipment has built-in multiple safety protection measures, such as overload protection, emergency stop and fault alarm functions, to ensure the safe operation of the equipment under any working conditions and improve the overall reliability.

[0030] 5) The present invention uses high-pressure water flow to remove rust, avoiding the use of chemical rust removers, and meets environmental protection requirements. Compared with the method of relying on chemical cleaning agents in the prior art, the present invention not only reduces pollution to the environment, but also avoids the risks that chemical agents may cause to equipment or operators, and realizes a greener and more environmentally friendly cleaning method. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0032] Figure 2 The present invention provides a program flow chart of a control system for an electric rust removal device inside a pressure vessel. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. 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, 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 comprises a motor 1, an outer 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 outer 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 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;

[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, the motor 1 is the core driving component of the device, providing a power source for the rotating device and other mechanical actions; the motor 1 adopts a variable frequency speed regulation design, and the speed can be adjusted according to the cleaning requirements to ensure the synchronous rotation of the high-pressure nozzle 6 and the wire brush body 5. At the same time, the motor 1 has an overload protection function to avoid equipment damage caused by long-term operation.

[0039] Furthermore, the outer shaft 2 is connected to the motor 1 through a gear transmission system and is a key component for connecting the high-pressure nozzle 6 and the wire brush body 5; the outer shaft 2 is made of high-strength steel and its surface is treated with anti-corrosion to withstand the friction during 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 to ensure efficient power transmission.

[0040] Furthermore, the electric push rod 3 is an important actuator of the wire brush extension device, responsible for adjusting the extension length of the wire brush body 5; the electric push rod 3 adopts a linear drive structure, and by controlling its extension action, the wire brush can flexibly adapt to the complex shape of the inner wall of the pressure vessel. The electric push rod 3 has the characteristics of high precision and low noise, and is equipped with a limit switch to prevent excessive extension.

[0041] Furthermore, the cylinder 4 is a 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 and has excellent wear resistance and flexibility. The wire brush body 5 is connected to the outer shaft 2 through the rotating arm 8 and driven by the electric push rod 3 to achieve telescopic action to remove stubborn rust. The surface of the brush body is coated with rust inhibitor and lubricant, which not only enhances the rust removal effect, but also forms a protective layer after cleaning.

[0043] Furthermore, the high-pressure nozzle 6 is the main cleaning component of the device, and is composed of 6 ceramic nozzles. The high-pressure nozzle 6 is connected to the high-pressure water pump through a water pipe, and sprays high-pressure water to impact and remove the rusted surface. The ceramic nozzle has the characteristics of wear resistance and precise spraying. The spraying angle and quantity can be adjusted according to needs, and it is suitable for different cleaning scenarios.

[0044] Furthermore, the water pipe 7 is used to connect the high-pressure water pump and the high-pressure nozzle 6, and is responsible for delivering high-pressure water. 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. Both ends of the water pipe 7 are provided with quick connectors 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 a 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, the spring 9 is installed between the wire brush body 5 and the outer shaft 2 as an auxiliary component of the wire brush telescopic device. The function of the spring 9 is to provide a rebound force, and cooperate with the electric push rod 3 to adjust the telescopic action of the wire brush body 5 so that it can flexibly adapt to the complex shape of the inner wall of the pressure vessel. The spring 9 is made of high-strength elastic steel and has good fatigue resistance.

[0047] Furthermore, the external wire 10 is used to connect the motor 1, the control system and other electric components to provide power support and signal transmission. The external wire 10 adopts a double-layer insulation design, the outer layer is made of wear-resistant and waterproof material, and the inner layer is composed of high-quality conductive copper core to ensure safety and stability in high humidity and high pressure environments.

[0048] Furthermore, the rust removal cover 11 is closely matched with the opening of the pressure vessel to play a sealing and supporting role. A sealing ring is embedded in the edge of the cover body, and a thread and a slot are provided at the connection with the pressure vessel cylinder to ensure the sealing performance of the device during operation. The rust removal cover 11 is made of high-strength alloy material and can withstand the impact force 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 supply for the high-pressure nozzle 6. The external water pipe 12 adopts a flexible design, which can 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, wherein 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 by 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, as the core control unit, is responsible for receiving input signals, performing logical operations, and coordinating the work between 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 realizes data monitoring, status feedback, and fault diagnosis;

[0054] The start and stop control module has a start logic in which when the operator inputs a start signal at 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 is 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] 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;

[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 receiving the emergency stop signal, 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; when a fault occurs, 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 starts of the high-pressure nozzle 6, 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 starts of the high-pressure nozzle 6, 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 supply of high-pressure water flow; connect the external wire 10 to the PLC control system and power supply. Check whether all connections are firm, especially whether the sealing ring at the rust removal cover 11 and the opening of the pressure vessel is intact to ensure 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, the outer shaft 2, the electric push rod 3, the cylinder 4, the wire brush body 5, the high-pressure nozzle 6 and the rotating arm 8 in sequence; completes the self-check 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 impact and remove floating rust; deep cleaning mode: start the wire brush body 5, and remove stubborn rust through 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 according to the real-time monitoring data. For example, when the sensor detects a lightly corroded area, the number of high-pressure nozzles is reduced or the speed of the wire brush body 5 is reduced; when a complex area is detected, the telescopic length of the wire brush body 5 is increased or the intensity of the high-pressure water flow is increased.

[0065] Furthermore, if an abnormality occurs during operation, such as unstable water pressure or motor overload, the PLC control system triggers an 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 troubleshoot the problem through sound and light alarms.

[0066] Furthermore, after the 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. An electric rust removal device for the inside of a pressure vessel, characterized in that: The invention comprises a high-pressure nozzle device, a rotating device and a wire brush telescopic device; the high-pressure nozzle device comprises 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 a rotating arm (8) via the cylinder (4), and the cylinder (4) is connected to an 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).

2. The electric rust removal device for the inside of a pressure vessel according to claim 1, characterized in that: It also includes an electric push rod (3) connected at both ends to the outer shaft (2) and the cylinder (4), 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 spring (9) is made of high-strength elastic steel.

3. The electric rust removal device for the inside of 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.

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

5. The electric rust removal device for the inside of a pressure vessel according to claim 1, characterized in that: The water pipe (7) is located inside the outer shaft (2); 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).

6. The electric rust removal device for the inside 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 to be 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.

7. The electric rust removal device for the inside of a pressure vessel according to claim 1, characterized in that: 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 container to be rusted, a sealing ring is embedded in the edge of the rust removal cover (11), and a thread and a groove are arranged on the contact surface with the outer shaft (2).

8. A control system for an electric rust removal device inside a pressure vessel according to any one of claims 1 to 7, characterized in that: It 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 all equipped with safety protection devices. The PLC control system is controlled by a PLC controller and operated through the handle operation terminal.

9. The control system of the electric rust removal device inside a pressure vessel according to claim 8, characterized in that: 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, as the core control unit, is responsible for receiving input signals, performing logical operations, and coordinating the work between 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 realizes data monitoring, status feedback, and fault diagnosis; The start and stop control module has a start logic in which when the operator inputs a start signal at 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 is 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; When the high-pressure nozzle control module enters 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 container through the rotation of the outer shaft (2), and the water flow fully covers the pressure container; the PLC of the high-pressure nozzle control module adjusts the control element according to the actual rust removal demand, so that the number of the started nozzles is 1 to 6; 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), thereby driving the rotating arm (8) to rotate and causing the wire brush body (5) to rotate; when receiving a stop signal, the PLC of the wire brush control module controls the motor (1) to stop and shut 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); 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; when a fault occurs, 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.

10. The control system of the electric rust removal device inside a pressure vessel according to claim 9, characterized in that: The user interface and the operating module display in real time the working state of the electric rust removal device inside the pressure vessel, including the rotation speed of the high-pressure nozzle (6), the start and stop state 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 activations of the high-pressure nozzle (6), the rotation speed and the telescopic length parameters of the wire brush body (5) through the handle operation terminal, and the PLC of the user interface and the operating module adjusts the rotation speed and the number of activations of the high-pressure nozzle (6) 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 state; the operating interface provides fault information and maintenance suggestions.

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