Multi-channel nondestructive testing device for hydrogen damage of water-cooled wall tube of boiler

Abstract

The utility model belongs to the technical field of water-cooled wall tubes, and discloses a multichannel boiler water-cooled wall tube hydrogen damage nondestructive testing device which comprises a shell, and a guide rail is fixedly sleeved in the right side of the top end of the shell. Through the arrangement of the driving motor, the detection ring, the single chip microcomputer and the power motor, an operator starts the driving motor to enable the rotating shaft to drive the rotating rod to rotate, then the hinge rod can drive the sliding block to move along the outer surface of the guide rail, and then the probe can conduct all-dimensional automatic detection on the water-cooled wall tube; the probe can transmit a signal to the high-frequency ultrasonic detector, so that an operator can know the hydrogen damage condition of the water-cooled wall tube through the high-frequency ultrasonic detector, the high-frequency ultrasonic detector can transmit a signal to the single-chip microcomputer, and the single-chip microcomputer can transmit a signal to the power motor according to a detection result; and after the power motor is started, the circular shaft drives the rotating plate to rotate.

Description

Technical Field

[0001] The utility model belongs to the technical field of water - cooled wall tubes, and specifically relates to a non - destructive testing device for hydrogen damage of multi - channel boiler water - cooled wall tubes. Background Technique

[0002] The water - cooled wall is the main heat - absorbing part of the boiler. It is composed of several rows of steel pipes, distributed around the boiler furnace, usually vertically laid on the inner wall of the furnace wall. It is mainly used to absorb the radiant heat released by the furnace flame and high - temperature flue gas, and is the main type of the evaporation heat - absorbing surface of various modern boilers, and is also the basic component in the boiler water - circulation loop.

[0003] In water - cooled wall tubes, due to the long - term erosion of water vapor and hydrogen under high - temperature and high - pressure environments, hydrogen damage to the pipeline material may occur. Therefore, a non - destructive testing device for hydrogen damage is required to detect water - cooled wall tubes. The commonly used non - destructive testing method for hydrogen damage of water - cooled wall tubes is ultrasonic testing. By using the propagation characteristics of ultrasonic waves in materials, the hydrogen damage inside the water - cooled wall tubes can be detected. In actual use, the existing ultrasonic testing device requires the operator to hold the probe and move it along the surface of the water - cooled wall tube until all positions of the water - cooled wall tube are detected. However, for multi - channel boilers, the number of water - cooled wall tubes that the operator needs to detect is large, and it is necessary to classify qualified and unqualified water - cooled wall tubes. The workload is huge, which is extremely labor - consuming, and long - term testing cannot ensure the comprehensiveness of detection. Therefore, it needs to be improved. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above problems. The utility model provides a non - destructive testing device for hydrogen damage of multi - channel boiler water - cooled wall tubes, which has the advantages of comprehensive detection and automatic classification.

[0005] To achieve the above object, the present utility model provides the following technical solution: A multi-channel boiler water wall tube hydrogen damage non-destructive testing device, including a housing. Inside the housing, on the right side of the top, a guide rail is fixedly sleeved. A slider is movably sleeved on the outer surface of the guide rail. At the bottom of the slider, a detection ring is fixedly connected. Inside the surface of the detection ring, a probe is fixedly installed. At the top of the back of the housing, a driving motor is fixedly installed. At the other end of the output shaft of the driving motor, a rotating shaft is fixedly connected. On the outer surface of the rotating shaft, a rotating rod is fixedly sleeved. At the other end of the rotating rod, a hinge rod is hinged. At the other end of the hinge rod, it is hinged to the top of the slider. On the front of the housing, a high-frequency ultrasonic detector and a single-chip microcomputer are fixedly installed. On the front and back sides of the right side of the housing, side plates are fixedly installed. On the back of the side plates, a power motor is fixedly installed. At the other end of the output shaft of the power motor, a round shaft is fixedly connected. The front end of the round shaft extends into the inside of the side plate and is movably sleeved with the inner wall of the side plate. On the outer surface of the round shaft, a rotating plate is fixedly sleeved. Between the side plates, an upper discharge plate is fixedly installed. Between the side plates, a lower discharge plate is fixedly installed and is located below the upper discharge plate.

[0006] As a preference of the present utility model, on the left side inside the housing, an inclined block is fixedly installed. On the right side inside the housing, a fixing plate is fixedly installed. On the right side of the fixing plate, a top plate is fixedly installed.

[0007] As a preference of the present utility model, the right side of the inclined block is movably connected to a lifting plate. The outer surface of the lifting plate is movably connected to the inner surface of the housing.

[0008] As a preference of the present utility model, on the left side of the top of the lifting plate, a feeding block is fixedly installed. The outer surface of the feeding block is movably connected to the outer surfaces of the housing, the inclined block, and the fixing plate respectively.

[0009] As a preference of the present utility model, on the right side of the top of the lifting plate, a placing block is fixedly installed. The outer surface of the placing block is movably connected to the inner surfaces of the fixing plate, the top plate, and the housing respectively.

[0010] As a preference of the present utility model, at the bottom of the lifting plate, a movable plate is fixedly connected. Inside the bottom end of the movable plate, a notch is opened.

[0011] As a preference of the present utility model, at the bottom of the inner surface on the right side of the housing, a fixing motor is fixedly installed. At the other end of the output shaft of the fixing motor, a rotating shaft is fixedly connected. On the outer surface of the rotating shaft, a disc is fixedly sleeved. Inside the bottom end of the disc, a round block is fixedly sleeved. The outer surface of the round block is movably connected to the inner surface of the notch.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In this utility model, by setting a driving motor, a detection ring, a single-chip microcomputer and a power motor, when the operator starts the driving motor, the rotating shaft drives the rotating rod to rotate, and then the articulated rod can drive the slider to move along the outer surface of the guide rail, so that the probe can perform a full-range automatic detection on the water-cooled wall tube. The probe will emit signals to the high-frequency ultrasonic detector, enabling the operator to understand the hydrogen damage condition of the water-cooled wall tube through the high-frequency ultrasonic detector. The high-frequency ultrasonic detector will emit signals to the single-chip microcomputer, enabling the single-chip microcomputer to emit signals to the power motor according to the detection results. After the power motor starts, the circular shaft drives the rotating plate to rotate, and then the qualified and unqualified water-cooled wall tubes can be discharged through the upper discharge plate and the lower discharge plate respectively, which is convenient for the operator to use and reduces the operator's work intensity.

[0014] 2. In this utility model, by setting an ejection plate, a feeding block, a placing block and a fixed motor, when the operator starts the fixed motor, the rotating shaft drives the disc to rotate, so that the circular block can squeeze and push the inner surface of the notch, so that the movable plate drives the lifting plate to rise, and then the feeding block can push the water-cooled wall tube upward, so that the water-cooled wall tube falls onto the top of the placing block, thus completing automatic feeding. When the placing block moves downward and the height of the top of the placing block is lower than the height of the ejection plate, the water-cooled wall tube will move outward along the top of the ejection plate, thus completing automatic discharging, improving the detection efficiency and reducing the workload of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a front cross-sectional structural diagram of the present utility model;

[0017] Figure 3 is a rear structural diagram of the present utility model;

[0018] Figure 4 is a side cross-sectional structural diagram of the present utility model;

[0019] Figure 5 is a structural diagram of the placing block of the present utility model;

[0020] Figure 6 is Figure 2 a partial enlarged structural diagram at A in

[0021] In the figure: 1. Housing; 2. Guide rail; 3. Slide block; 4. Detection ring; 5. Probe; 6. Driving motor; 7. Rotating shaft; 8. Rotating rod; 9. Hinge rod; 10. High-frequency ultrasonic detector; 11. Single-chip microcomputer; 12. Side plate; 13. Power motor; 14. Round shaft; 15. Rotating plate; 16. Upper discharge plate; 17. Lower discharge plate; 18. Inclined block; 19. Fixed plate; 20. Ejector plate; 21. Lifting plate; 22. Feeding block; 23. Placing block; 24. Movable plate; 25. Notch; 26. Fixed motor; 27. Rotating shaft; 28. Disc; 29. Round block. Detailed implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] As Figures 1 to 6 shown, the present invention provides a multi-channel non-destructive detection device for hydrogen damage of boiler water-cooled wall tubes, including a housing 1. A guide rail 2 is fixedly sleeved inside the right side of the top of the housing 1. A slide block 3 is movably sleeved on the outer surface of the guide rail 2. The bottom of the slide block 3 is fixedly connected to a detection ring 4. A probe 5 is fixedly installed on the inner surface of the detection ring 4. A driving motor 6 is fixedly installed on the top of the back of the housing 1. The other end of the output shaft of the driving motor 6 is fixedly connected to a rotating shaft 7. A rotating rod 8 is fixedly sleeved on the outer surface of the rotating shaft 7. The other end of the rotating rod 8 is hinged to a hinge rod 9. The other end of the hinge rod 9 is hinged to the top of the slide block 3. A high-frequency ultrasonic detector 10 and a single-chip microcomputer 11 are fixedly installed on the front of the housing 1. Side plates 12 are fixedly installed on both the front and back sides of the right side of the housing 1. A power motor 13 is fixedly installed on the back of the side plate 12. The other end of the output shaft of the power motor 13 is fixedly connected to a round shaft 14. The front end of the round shaft 14 extends into the inside of the side plate 12 and is movably sleeved with the inner wall of the side plate 12. A rotating plate 15 is fixedly sleeved on the outer surface of the round shaft 14. An upper discharge plate 16 is fixedly installed between the side plates 12. A lower discharge plate 17 is fixedly installed between the side plates 12 and is located below the upper discharge plate 16.

[0024] The operator can start the driving motor 6, so that the rotating shaft 7 drives the rotating rod 8 to rotate, and then the hinge rod 9 can push the slide block 3 to move along the outer surface of the guide rail 2, so that the probe 5 can detect the water-cooled wall tube. The probe 5 will emit signals to the high-frequency ultrasonic detector 10, so that the operator can understand the hydrogen damage situation of the water-cooled wall tube through the high-frequency ultrasonic detector 10.

[0025] Refer toFigures 1 to 4 , on the left side inside the housing 1, an inclined block 18 is fixedly installed, and on the right side inside the housing 1, a fixing plate 19 is fixedly installed. On the right side of the fixing plate 19, an ejector plate 20 is fixedly installed.

[0026] As a technical optimization scheme of the present utility model, the number of the ejector plates 20 is two, and the tops of the two ejector plates 20 are inclined from right to left and from top to bottom.

[0027] Reference Figure 2 , Figure 4 and Figure 5 , the right side of the inclined block 18 is movably connected with a lifting plate 21, and the outer surface of the lifting plate 21 is movably connected with the inner surface of the housing 1.

[0028] As a technical optimization scheme of the present utility model, the outer surface of the lifting plate 21 is smooth, so that the lifting plate 21 can rise or fall more smoothly.

[0029] Reference Figure 2 and Figure 5 , on the left side of the top of the lifting plate 21, a feeding block 22 is fixedly installed, and the outer surface of the feeding block 22 is movably connected with the outer surfaces of the housing 1, the inclined block 18 and the fixing plate 19 respectively.

[0030] As a technical optimization scheme of the present utility model, when the lifting plate 21 rises, it will drive the feeding block 22 to rise. Since the top of the feeding block 22 is inclined, the feeding block 22 can push the water-cooled wall tube upward.

[0031] Reference Figure 2 , Figure 4 and Figure 5 , on the right side of the top of the lifting plate 21, a placing block 23 is fixedly installed, and the outer surface of the placing block 23 is movably connected with the outer surfaces of the fixing plate 19, the ejector plate 20 and the inner surface of the housing 1 respectively.

[0032] As a technical optimization scheme of the present utility model, when the lifting plate 21 rises, it will drive the placing block 23 to rise, so that the height of the top of the placing block 23 can exceed the height of the ejector plate 20.

[0033] Reference Figure 2 , Figure 4 and Figure 5 , the bottom of the lifting plate 21 is fixedly connected with a movable plate 24, and a notch 25 is opened inside the bottom end of the movable plate 24.

[0034] As a technical optimization scheme of the present utility model, when the movable plate 24 rises, it will drive the lifting plate 21 to move upward.

[0035] Reference Figure 2 , Figure 4 andFigure 5 At the bottom on the right side of the inner surface of the housing 1, a fixed motor 26 is fixedly installed. The other end of the output shaft of the fixed motor 26 is fixedly connected to a rotating shaft 27. An outer surface of the rotating shaft 27 is fixedly sleeved with a disc 28. Inside the bottom end of the disc 28, a round block 29 is fixedly sleeved. An outer surface of the round block 29 is movably connected to an inner surface of the notch 25.

[0036] As a technical optimization scheme of the present utility model, when the disc 28 rotates, the round block 29 will squeeze and push the inner surface of the notch 25, thereby driving the movable plate 24 to move upward.

[0037] The working principle and usage process of the present utility model:

[0038] First, the operator places the water-cooled wall tube to be detected on the upper surface of the inclined block 18. Then, by starting the fixed motor 26, the rotating shaft 27 can drive the disc 28 to rotate. Further, the round block 29 can rotate around the rotating shaft 27 as the axis, so that the round block 29 squeezes and pushes the inner surface of the notch 25, thereby driving the movable plate 24 to move upward. Further, the movable plate 24 drives the lifting plate 21, the feeding block 22 and the placing block 23 to rise. When the feeding block 22 rises, the water-cooled wall tube at the top of the feeding block 22 will be pushed upward, so that the water-cooled wall tube can fall onto the top of the placing block 23. As the lifting plate 21 continues to rise, at this time, the placing block 23 will drive the water-cooled wall tube to move below the probe 5, so that the water-cooled wall tube can be detected.

[0039] Then, the operator starts the driving motor 6, so that the rotating shaft 7 drives the rotating rod 8 to rotate. Further, the hinged rod 9 can drive the slider 3 to move along the outer surface of the guide rail 2. Further, the probe 5 can perform a full-automatic detection on the water-cooled wall tube. The probe 5 will emit a signal to the high-frequency ultrasonic detector 10, so that the operator can understand the hydrogen damage condition of the water-cooled wall tube through the high-frequency ultrasonic detector 10. The high-frequency ultrasonic detector 10 will emit a signal to the single-chip microcomputer 11. At this time, the single-chip microcomputer 11 will respectively emit signals to the fixed motor 26 and the power motor 13. After receiving the signal, the fixed motor 26 will start, so that the rotating shaft 27 drives the disc 28 to rotate, so that the lifting plate 21 can be reset downward. After the placing block 23 is reset, the height of the top of the placing block 23 will be lower than the height of the top of the ejector plate 20, so that the water-cooled wall tube inside the placing block 23 contacts the top of the ejector plate 20, and then can roll out along the top of the ejector plate 20. At this time, after the feeding block 22 is reset, the next water-cooled wall tube to be detected will roll above the feeding block 22, so that the next feeding can be carried out.

[0040] When the single-chip microcomputer 11 transmits a signal to the driving motor 13, it will transmit different signals to the driving motor 13 according to whether the detection is qualified, so that the driving motor 13 can start after receiving the signal. When the water-cooled wall tube is detected to be qualified, the circular shaft 14 will not rotate at this time, so that the qualified water-cooled wall tubes can be discharged along the upper surface of the upper discharge plate 16. When the detection is unqualified, the circular shaft 14 will drive the rotating plate 15 to rotate downward, so that the unqualified water-cooled wall tubes will fall onto the upper surface of the lower discharge plate 17, thus realizing the classification of the water-cooled wall tubes.

[0041] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nondestructive testing device for hydrogen damage to water-cooled wall tubes of a multi-channel boiler, comprising a housing (1), characterized in that: A guide rail (2) is fixedly sleeved on the inside of the right side of the top of the shell (1), a slider (3) is movably sleeved on the outer surface of the guide rail (2), a detection ring (4) is fixedly connected to the bottom of the slider (3), a probe (5) is fixedly installed on the inner surface of the detection ring (4), a driving motor (6) is fixedly installed on the top of the back of the shell (1), the other end of the output shaft of the driving motor (6) is fixedly connected to a rotating shaft (7), a rotating rod (8) is fixedly sleeved on the outer surface of the rotating shaft (7), the other end of the rotating rod (8) is hinged to a hinged rod (9), the other end of the hinged rod (9) is hinged to the top of the slider (3), and the front of the shell (1) is fixedly installed A high-frequency ultrasonic detector (10) and a single-chip computer (11) are provided. Side panels (12) are fixedly installed on both the front and rear sides of the right side of the housing (1). A power motor (13) is fixedly installed on the back of the side panel (12). A round shaft (14) is fixedly connected to the other end of the output shaft of the power motor (13). The front end of the round shaft (14) extends to the inside of the side panel (12) and is movably sleeved with the inner wall of the side panel (12). A rotating plate (15) is fixedly sleeved on the outer surface of the round shaft (14). An upper discharge plate (16) is fixedly installed between the side panels (12). A lower discharge plate (17) located below the upper discharge plate (16) is fixedly installed between the side panels (12).

2. The device for nondestructive testing of hydrogen damage to water-cooled wall tubes of a multi-channel boiler according to claim 1, characterized in that: An inclined block (18) is fixedly installed on the left side inside the shell (1), a fixed plate (19) is fixedly installed on the right side inside the shell (1), and an ejection plate (20) is fixedly installed on the right side of the fixed plate (19).

3. The nondestructive testing device for hydrogen damage to water-cooled wall tubes of a multi-channel boiler according to claim 2, characterized in that: The right side of the inclined block (18) is movably connected to a lifting plate (21), and the outer surface of the lifting plate (21) is movably connected to the inner surface of the shell (1).

4. The device for nondestructive testing of hydrogen damage to water-cooled wall tubes of a multi-channel boiler according to claim 3, characterized in that: A feed block (22) is fixedly mounted on the left side of the top of the lifting plate (21), and the outer surface of the feed block (22) is movably connected to the outer surfaces of the shell (1), the inclined block (18) and the fixed plate (19) respectively.

5. The device for nondestructive detection of hydrogen damage to water-cooled wall tubes of a multi-channel boiler according to claim 3, characterized in that: A placement block (23) is fixedly installed on the right side of the top of the lifting plate (21), and the outer surface of the placement block (23) is movably connected to the inner surface of the fixed plate (19), the ejection plate (20) and the shell (1) respectively.

6. The device for nondestructive testing of hydrogen damage to water-cooled wall tubes of a multi-channel boiler according to claim 3, characterized in that: The bottom of the lifting plate (21) is fixedly connected to a movable plate (24), and a notch (25) is provided inside the bottom end of the movable plate (24).

7. The device for nondestructive testing of hydrogen damage to water-cooled wall tubes of a multi-channel boiler according to claim 1, characterized in that: A fixed motor (26) is fixedly mounted at the bottom of the right side of the inner surface of the shell (1); the other end of the output shaft of the fixed motor (26) is fixedly connected to a rotating shaft (27); a disk (28) is fixedly sleeved on the outer surface of the rotating shaft (27); a round block (29) is fixedly sleeved inside the bottom end of the disk (28); and the outer surface of the round block (29) is movably connected to the inner surface of the notch (25).

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