Boiler pressure vessel inner surface crack detection device

Abstract

The utility model provides a boiler pressure vessel inner surface crack detection device, which comprises a main body and a plurality of groups of walking assemblies, the plurality of groups of walking assemblies are symmetrically distributed on two sides of the main body, one end of each walking assembly is provided with an adsorption assembly, the adsorption assembly comprises a mounting piece, the bottom of the mounting piece is provided with a plurality of groups of telescopic motors, and a connecting plate is arranged below the mounting piece. Shaft ends of the telescopic motors are connected with a connecting plate, multiple electromagnets are arranged at the bottom of the connecting plate, a spraying assembly is arranged at the top of the body, and a control module and a storage battery are arranged in the body. The walking assembly and the adsorption assembly of the detection device realize the function of moving the device on the inner surface of the container. A telescopic motor in the adsorption assembly is matched with an electromagnet to ensure that the device can be adsorbed on the inner surface of a container, and the spraying assembly of the detection device has the functions of storing and spraying a penetrant and a developer. The device is further provided with a camera and an ultraviolet lamp which are used for cooperating with detection.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection devices, and more specifically, relates to a device for detecting cracks on the inner surface of a boiler pressure vessel. Background Art

[0002] Boiler pressure vessels operate under high temperature and high pressure conditions for a long time, and cracks are prone to form on the surface. If they are not inspected and repaired, the long-term operation of the boiler pressure vessel will cause the cracks to expand, reducing the structural strength of the boiler pressure vessel, which may lead to leakage accidents. In order to prevent the occurrence of leakage, the inner surface crack detection of the boiler pressure vessel is carried out. However, traditional boiler pressure vessel inner surface crack detection often requires manual cleaning of the inner surface of the container, application of penetrant, application of developer and other tedious steps, resulting in reduced work efficiency and increased time costs. At the same time, in the limited space inside the boiler pressure vessel, manual operation becomes more difficult and the operating space is narrow, which makes it difficult to carry out maintenance and inspection work inside the equipment. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a boiler pressure vessel inner surface crack detection device to solve the technical problems in the existing technology that traditional boiler pressure vessel inner surface crack detection is cumbersome to perform manual operation, the boiler pressure vessel space is limited, and manual operation is difficult.

[0004] The purpose and effectiveness of a boiler pressure vessel inner surface crack detection device are achieved by the following specific technical means:

[0005] A device for detecting cracks on the inner surface of a boiler pressure vessel comprises a main body and multiple groups of walking components, wherein the multiple groups of walking components are symmetrically distributed on both sides of the main body; an adsorption component is provided at one end of the walking component, and the adsorption component comprises a mounting member, and multiple groups of telescopic motors are provided at the bottom of the mounting member; a connecting plate is provided below the mounting member, and the shaft ends of the multiple groups of telescopic motors are connected to the connecting plate; multiple groups of electromagnets are provided at the bottom of the connecting plate, a spraying component is provided at the top of the main body, and a control module and a battery are provided in the main body.

[0006] According to a preferred embodiment, the walking assembly includes a base, a first shaft arm is provided on the base, a first motor is provided in the base, and the shaft end of the first motor is connected to the first shaft arm; two groups of servo motors are provided on both sides of the first shaft arm, and the shaft ends of the two groups of servo motors are respectively connected to the second shaft arm and one end of the connecting rod, and the third shaft arm is installed on the second shaft arm, and the other end of the connecting rod is connected to the third shaft arm.

[0007] According to a preferred embodiment, a second motor is arranged in the third shaft arm, the shaft end of the second motor is connected to the fourth shaft arm, a third motor is arranged in the fourth shaft arm, and the shaft end of the third motor is connected to the mounting block; the mounting block is connected to the flange, the fourth shaft arm is rotatably connected to the third shaft arm and the mounting block, and the first motor, the second motor, the third motor and the servo motor are all electrically connected to the control module.

[0008] According to a preferred embodiment, the spray assembly includes two groups of liquid storage tanks, a liquid storage tank is opened on the top of the main body, and the two groups of liquid storage tanks are clamped in the liquid storage tank, one group of liquid storage tanks is filled with developer, and the other group of liquid storage tanks is filled with penetrant.

[0009] According to a preferred embodiment, the two groups of liquid storage tanks are both equipped with booster pumps, the main body is provided with a two-position three-way solenoid valve, the two groups of booster pumps are connected to one side of the two-position three-way solenoid valve, the other side of the two-position three-way solenoid valve is equipped with a liquid outlet pipe, one end of the liquid outlet pipe is equipped with a nozzle, the two-position three-way solenoid valve and the booster pump are both electrically connected to the control module.

[0010] According to a preferred embodiment, a laser rust remover host is provided at one end of the main body; a laser gun is provided on the top of the main body, and the laser rust remover host is electrically connected to the laser gun and the control module respectively.

[0011] According to a preferred embodiment, a camera is provided on the main body, and a purple light is provided at the bottom of the main body, and the camera and the purple light are both electrically connected to the control module.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The travel assembly and the adsorption assembly work together to enable the device to move along the inner surface of the container. The travel assembly comprises multiple arms and servo motors, ensuring the device's mobility. The telescopic motor in the adsorption assembly works in conjunction with the electromagnet to ensure the device remains firmly attached to the inner surface of the container. Furthermore, the spray assembly integrates the storage and spraying functions for the penetrant and developer. It uses a reservoir to hold the reagents, and a booster pump and solenoid valve to control the spraying process.

[0014] 2. The device is equipped with a camera and a UV lamp. The camera allows for direct observation of the container's inner surface, while the UV lamp helps detect specific crack types. During reagent operation, the UV lamp and nozzle work together to clearly visualize cracks. The laser rust remover at one end of the main body is connected to the laser gun at the top. During the inspection process, if rust affects the test results, rust removal can be performed directly. Laser rust removal is not only highly efficient, but also does not damage the inner surface of the container, thereby improving the effectiveness of the inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model after assembly;

[0016] Figure 2 It is a schematic diagram of the structure of the utility model after being disassembled;

[0017] Figure 3 yes Figure 2 Enlarged view of area a in the middle;

[0018] Figure 4 yes Figure 2 Enlarged view of area b;

[0019] Figure 5 This is a principle framework diagram of the utility model.

[0020] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0021] 1. First axis arm; 2. Second axis arm; 3. Third axis arm; 4. Fourth axis arm; 5. Servo motor; 6. Mounting block; 7. Liquid storage tank; 8. Rust remover main unit; 9. Flange; 10. Base; 11. Nozzle; 12. Liquid outlet pipe; 13. Camera; 14. Telescopic motor; 15. Mounting part; 16. Connecting plate; 17. Electromagnet; 18. Booster pump; 19. Two-position three-way solenoid valve; 20. Laser gun; 21. Ultraviolet light; 22. Connecting rod; 23. Main unit. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following embodiments are used to illustrate the technical solution of the present invention, but are not intended to limit the scope of protection of the present invention.

[0023] Example:

[0024] like Figures 1 to 4As shown, the utility model provides a device for detecting cracks on the inner surface of a boiler pressure vessel, which includes a main body 23 and multiple groups of walking components. The main body 23 plays the role of integrating and supporting other components. The multiple groups of walking components are symmetrically distributed on both sides of the main body 23. An adsorption component is provided at one end of the walking component, which allows the device to be firmly attached to the inner surface of the container, providing a guarantee for the smooth progress of the detection work. The adsorption component covers the mounting part 15, which is used to carry and connect other components and plays a stable supporting role. The bottom of the mounting part 15 is equipped with multiple groups of telescopic motors 14. These multiple groups of telescopic motors 14 can adjust the position and height of the lower components according to specific detection scenarios and needs to adapt to different detection environments and conditions. A connecting plate 16 is provided below the mounting part 15, and the shaft ends of the multiple groups of telescopic motors 14 are all connected to the connecting plate 16. The connecting plate 16 plays the role of transmitting power and support, and can effectively transmit the movement of the telescopic motor 14 to the components below. A plurality of electromagnets 17 are provided at the bottom of the connecting plate 16. When energized, these electromagnets 17 generate strong magnetic force, enabling the device to be stably and reliably adsorbed on the inner wall of the metal boiler pressure vessel, ensuring that there will be no shaking or displacement during the detection process, thereby improving the reliability of the detection.

[0025] A spray assembly is located on top of the main body 23, primarily used to spray developer and penetrant onto the surface to be inspected. A violet lamp 21 is located beneath the main body 23. During the inspection process, the violet lamp 21 emits light of a specific wavelength. When the penetrant penetrates existing cracks, it produces a significant fluorescent reaction under the illumination of the violet lamp 21, helping inspectors more clearly observe and identify the presence and morphology of cracks.

[0026] like Figure 1 、 2 As shown, the walking assembly includes a base 10, which not only provides a support foundation for the components above but also provides installation space for the first motor inside. A first shaft arm 1 is mounted on the base 10, and a first motor is mounted within the base 10. The shaft end of the first motor is connected to the first shaft arm 1. The first motor can drive the first shaft arm 1 to rotate horizontally, thereby flexibly adjusting the travel direction of the entire walking assembly and enabling the device to move freely within the complex internal environment of the container. Two sets of servo motors 5 are installed on both sides of the first shaft arm 1. The shaft ends of the two sets of servo motors 5 are respectively connected to the second shaft arm 2 and one end of the connecting rod 22. These two sets of servo motors 5 can precisely control the movement of the second shaft arm 2 and the connecting rod 22, achieving fine adjustment of the posture and position of the walking assembly. A third shaft arm 3 is mounted on the second shaft arm 2, and the other end of the connecting rod 22 is connected to the third shaft arm 3. This connection method ensures coordinated action between the various components, allowing the walking assembly to adapt to the different shapes and angles of the container inner wall.

[0027] A second motor is provided within the third arm 3, the shaft end of the second motor being connected to the fourth arm 4. The second motor can drive the fourth arm 4 to rotate, further increasing the flexibility and adjustability of the travel assembly. A third motor is provided within the fourth arm 4, the shaft end of the third motor being connected to the mounting block 6. The third motor can drive the mounting block 6 to rotate, thereby achieving full adjustment of the position and angle of the device. The mounting block 6 is connected to the flange 9, and the fourth arm 4 is rotatably connected to the third arm 3 and the mounting block 6. This rotatable connection enables the entire travel assembly to move smoothly, ensuring that the device can reach the detection position within the container.

[0028] like Figure 1 、 4 As shown, the spray assembly includes two sets of liquid reservoirs 7, which are used to store developer and penetrant, respectively, to provide sufficient reagents for testing. A liquid reservoir is provided on the top of the main body 23, and the two sets of liquid reservoirs 7 are clamped into the reservoir. The reservoir provides a stable mounting position for the liquid reservoirs 7, ensuring that the liquid reservoirs 7 will not loosen or move during movement and operation of the device.

[0029] One group of liquid storage tanks 7 is filled with a developer. During the detection process, the developer can make the penetrant that penetrates into the cracks develop color, making the cracks more clearly visible. The other group of liquid storage tanks 7 is filled with a penetrant. The penetrant can penetrate into the tiny cracks and prepare for subsequent detection and observation. The tank openings of both groups of liquid storage tanks 7 are equipped with booster pumps 18. The booster pumps 18 can provide sufficient pressure for the spraying of the reagents, ensuring that the reagents can be sprayed evenly and forcefully onto the surface to be tested. The two groups of booster pumps 18 are connected to one side of a two-position three-way solenoid valve 19, and the other side of the two-position three-way solenoid valve 19 is connected to one end of a liquid outlet pipe 12. The two-position three-way solenoid valve 19 can accurately control the flow direction and spraying timing of the reagent, while the liquid outlet pipe 12 is responsible for transporting the reagent to the specified location. The other end of the liquid outlet pipe 12 is connected to a spray nozzle 11, which can evenly atomize the reagent and spray it on the detection surface, improving the coverage area and usage efficiency of the reagent.

[0030] like Figure 1 、 2As shown, a camera 13 is provided at one end of the main body 23. The camera 13 can capture images and videos of the detection process in real time, providing operators with intuitive detection images and facilitating their remote monitoring and analysis of the detection situation. A laser rust remover host 8 is provided at the other end. The laser rust remover host 8 can emit a high-energy laser beam to quickly and effectively remove rust and dirt from the surface of the container, thereby improving the accuracy and reliability of the detection. A laser gun 20 is provided at the top of the main body 23. The laser gun 20 is electrically connected to the laser rust remover host 8. Under the control of the laser rust remover host 8, the laser gun 20 can process the parts that need rust removal. A control module and a battery are provided in the main body 23. The control module can adopt the Arduino control module of Songjia Technology. The control module is responsible for coordinating and controlling the operation of each component of the entire device to ensure that they operate in a coordinated and orderly manner. The battery provides independent power support for the device, enabling it to operate normally even without an external power supply, thereby improving the flexibility and adaptability of the device.

[0031] The specific usage and function of this embodiment are as follows:

[0032] When in use, first connect the battery, the control module self-checks, checks the initial status of each component and checks the reagent status. Then place the device at the entrance of the container, start the walking component to enter the container, and the adsorption component automatically adjusts the adsorption position. After entering, the walking component moves according to the control instructions, and the camera 13 takes real-time images of the inner surface to assist in preliminary judgment. During the inspection, the spray component booster pump 18 works, spraying the reagent through the solenoid valve, the liquid outlet pipe 12 and the nozzle 11, the ultraviolet lamp 21 illuminates the developer, and the crack situation is determined by the camera 13 or the image analysis algorithm. If rust is found to affect the detection, the laser rust remover can be started, which is connected to the top laser gun 20 to prevent rust from interfering with the detection results. During the whole process, the control module coordinates the operation of each component and the battery continues to supply energy.

[0033] The basic principles, main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A device for detecting cracks on the inner surface of a boiler pressure vessel, comprising a main body (23) and a plurality of moving components, characterized in that: Multiple groups of walking components are symmetrically distributed on both sides of the main body (23), an adsorption component is provided at one end of the walking component, the adsorption component includes a mounting member (15), and multiple groups of telescopic motors (14) are provided at the bottom of the mounting member (15); a connecting plate (16) is provided below the mounting member (15), and the shaft ends of the multiple groups of telescopic motors (14) are all connected to the connecting plate (16); multiple groups of electromagnets (17) are provided at the bottom of the connecting plate (16), a spraying component is provided at the top of the main body (23), and a control module and a battery are provided in the main body (23).

2. The boiler pressure vessel inner surface crack detection device according to claim 1, characterized in that: The walking assembly comprises a base (10), a first shaft arm (1) is provided on the base (10), a first motor is provided in the base (10), and the shaft end of the first motor is connected to the first shaft arm (1); two groups of servo motors (5) are provided on both sides of the first shaft arm (1), and the shaft ends of the two groups of servo motors (5) are respectively connected to the second shaft arm (2) and one end of the connecting rod (22); a third shaft arm (3) is installed on the second shaft arm (2), and the other end of the connecting rod (22) is connected to the third shaft arm (3).

3. The boiler pressure vessel inner surface crack detection device according to claim 2, characterized in that: A second motor is provided in the third shaft arm (3), the shaft end of the second motor is connected to the fourth shaft arm (4), a third motor is provided in the fourth shaft arm (4), the shaft end of the third motor is connected to the mounting block (6); the mounting block (6) is connected to the flange (9), the fourth shaft arm (4) is rotatably connected to the third shaft arm (3) and the mounting block (6), and the first motor, the second motor, the third motor and the servo motor (5) are all electrically connected to the control module.

4. The boiler pressure vessel inner surface crack detection device according to claim 1, characterized in that: The spray assembly comprises two groups of liquid storage tanks (7), a liquid storage tank is provided on the top of the main body (23), and the two groups of liquid storage tanks (7) are clamped in the liquid storage tank, wherein one group of liquid storage tanks (7) is filled with a developer, and the other group of liquid storage tanks (7) is filled with a penetrant.

5. The boiler pressure vessel inner surface crack detection device according to claim 4, characterized in that: The two groups of liquid storage tanks (7) are both equipped with a booster pump (18), and the main body (23) is provided with a two-position three-way solenoid valve (19). The two groups of booster pumps (18) are connected to one side of the two-position three-way solenoid valve (19), and the other side of the two-position three-way solenoid valve (19) is equipped with a liquid outlet pipe (12), and one end of the liquid outlet pipe (12) is equipped with a nozzle (11). The two-position three-way solenoid valve (19) and the booster pump (18) are both electrically connected to the control module.

6. The boiler pressure vessel inner surface crack detection device according to claim 1, characterized in that: A laser rust remover host (8) is provided at one end of the main body (23); a laser gun (20) is provided at the top of the main body (23); and the laser rust remover host (8) is electrically connected to the laser gun (20) and the control module respectively.

7. The boiler pressure vessel inner surface crack detection device according to claim 6, characterized in that: A camera (13) is provided on the main body (23), and a purple light (21) is provided at the bottom of the main body (23). Both the camera (13) and the purple light (21) are electrically connected to the control module.

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