An on-line automatic measuring device for wall thickness of high-temperature steel pipe

Abstract

The application discloses an online automatic measuring device for the wall thickness of a high-temperature steel pipe. The device comprises a steel pipe guide column, a transmission ring, a main frame assembly, a connecting rod assembly and a first adjusting assembly. The steel pipe guide column is arranged in the main frame assembly and is used for conveying a steel pipe to be measured. The transmission ring is coaxially arranged outside the steel pipe guide column and is arranged close to the steel pipe outlet of the steel pipe guide column. The transmission ring is connected to the outlet side plate of the main frame assembly through the first adjusting assembly. A plurality of connecting rod assemblies are arranged at intervals along the circumference and are arranged close to the steel pipe inlet of the steel pipe guide column. Each connecting rod assembly extends into the steel pipe guide column and is provided with a detection assembly. The connecting rod assembly is connected to the inlet side plate of the main frame assembly and is connected to the transmission ring. The device can be used for long-time online measurement of the wall thickness of the steel pipe at high temperature (600-1000 DEG C), realizes real-time synchronization of relevant data, greatly improves the qualified rate of the finished steel pipe and reduces the cost of the production line.

Description

Technical Field

[0001] This invention relates to a steel pipe wall thickness detection device, and more particularly to an online automatic measurement device for steel pipe wall thickness under high temperature conditions. Background Technology

[0002] Online automatic detection of steel pipe wall thickness under high-temperature conditions is a challenging and demanding project. During the production of hot-rolled steel pipes, the high-temperature environment makes on-site measurement difficult. Wall thickness testing is typically performed after the pipes have cooled. This makes real-time feedback of critical data during production difficult, despite the massive annual output of steel pipes, which operates almost 24 / 7. If wall thickness discrepancies are detected after cooling, batches of defective products result in significant waste. Therefore, it is necessary to develop an online automatic measurement device for the wall thickness of high-temperature steel pipes. Summary of the Invention

[0003] To address the problems and needs in the background technology, this invention proposes an online automatic measurement device for the wall thickness of high-temperature steel pipes. The device can automatically adjust the detection distance according to the outer diameter of the steel pipe. It also designs a follow-up mechanism so that the probe detection component can follow the fluctuations on the surface of the steel pipe, which protects the probe component and ensures the necessary detection distance. In addition, the core detection components are equipped with multiple cooling protections such as water cooling and air cooling, enabling long-term online measurement at high temperatures (600-1100℃).

[0004] The technical solution adopted in this invention is:

[0005] An online automatic measurement device for the wall thickness of high-temperature steel pipes includes a steel pipe guide column, a transmission ring, a main frame assembly, a connecting rod assembly, and a first adjustment assembly. The main frame assembly houses the steel pipe guide column, which is used to transport the steel pipe to be measured. The transmission ring is located outside the steel pipe guide column and is coaxially aligned with it. The transmission ring is positioned near the steel pipe outlet of the steel pipe guide column and can slide axially on the steel pipe guide column. The transmission ring is connected to the outlet side plate of the main frame assembly via the first adjustment assembly. Multiple connecting rod assemblies are installed at circumferential intervals near the steel pipe inlet of the steel pipe guide column. Each connecting rod assembly has a detection component installed where it extends into the steel pipe guide column. The connecting rod assemblies are also connected to the inlet side plate of the main frame assembly and to the transmission ring. The first adjustment assembly adjusts the axial movement of the transmission ring, which in turn drives the connecting rod assemblies to move radially until the structure of each connecting rod assembly extending into the steel pipe guide column disengages from the wall of the steel pipe to be measured, thus accommodating different steel pipe diameters.

[0006] The main frame assembly also includes a frame, a top plate, a right side plate, and a left side plate. The frame contains steel pipe guide columns, a transmission ring, a connecting rod assembly, and a first adjustment assembly. The top plate is installed on the top of the frame, the left side plate is installed on the left side of the frame, the right side plate is installed on the right side of the frame, the inlet side plate is installed on the steel pipe inlet side of the frame, and the outlet side plate is installed on the steel pipe outlet side of the frame.

[0007] The linkage assembly includes a first linkage, a first connecting shaft, a second linkage, a second connecting shaft, a connector, a buffer spring, a buffer connecting frame, a guide sleeve, a guide shaft, and a fourth linkage. The guide sleeve is installed in the steel pipe guide column, and the axis of the guide sleeve is located radially on the steel pipe. The guide shaft is installed inside the guide sleeve and is coaxial with the guide sleeve. One end of the guide shaft extends into the steel pipe guide column and is connected to the corresponding detection component. The other end of the guide shaft is hinged to one end of the fourth linkage. The other end of the fourth linkage is hinged to one end of the second linkage. The other end of the second linkage is connected to the inlet side plate of the main frame assembly through the first linkage. The other end of the fourth linkage is also connected to the connector. A guide rod is provided on the side of the connector near the steel pipe inlet. A buffer connecting frame is installed at the end of the guide rod, and a buffer spring is sleeved on the guide rod. The buffer connecting frame slides along the guide rod. The buffer connecting frame is connected to the transmission ring.

[0008] The detection assembly includes a probe frame, rollers, mounting blocks, and a probe; the probe frame is connected to the connecting rod assembly, the probe is installed in the probe frame, and corresponding rollers are installed on both sides of the probe frame through corresponding mounting blocks, with the rollers contacting the wall of the steel pipe to be tested.

[0009] The first adjustment component includes a drive cylinder, which is fixedly connected to the outlet side plate of the main frame assembly, and the piston rod of the drive cylinder is connected to the transmission ring.

[0010] Multiple linear guide rails are installed on the outer circumferential side of the steel pipe guide column. Each linear guide rail is arranged along the axial direction of the steel pipe. A corresponding guide rail bracket is slidably installed in each linear guide rail. Multiple protrusions are arranged circumferentially on the side of the transmission ring near the steel pipe inlet. Each guide rail bracket is fixedly connected to the corresponding protrusion on the side of the transmission ring.

[0011] An upper limit plate is installed on the inner side of the transmission ring, and a lower limit plate is installed on the outer circumferential side of the steel pipe guide column. The upper limit plate and the lower limit plate are paired to limit the transmission ring.

[0012] The online automatic measuring device also includes a second adjustment component, each of which is used to adjust the axial position of the corresponding lower limit plate on the steel pipe guide column.

[0013] The second adjustment assembly includes a first bearing support, a lead screw assembly, a second bearing support, and an adjustment motor. The adjustment motor is fixedly installed on the outer circumferential side of the steel pipe guide column. The lead screw assembly is fixedly installed on the outer circumferential side of the steel pipe guide column through the first and second bearing support seats. The output shaft of the adjustment motor is connected to the lead screw assembly. The lower limit plate is connected to the slider in the lead screw assembly. The adjustment motor adjusts the axial position of the lower limit plate on the steel pipe guide column through the lead screw assembly.

[0014] The steel pipe guide column is also covered with a heat insulation bracket.

[0015] The beneficial effects of this invention are:

[0016] This invention employs a unique linkage assembly that can convert horizontal motion into vertical motion, which not only reduces the number of drive components but also makes the action stable and reliable.

[0017] This invention incorporates a buffer structure; during online testing, the connecting rod assembly can float with the surface of the steel pipe, avoiding hard contact between the testing components and improving their service life.

[0018] This invention designs two adjustment components that can automatically adjust the detection distance of the detection element according to the outer diameter of the steel pipe;

[0019] This invention employs dual protection of air cooling and water cooling to keep the detection components at a suitable operating temperature, thereby improving detection accuracy and service life.

[0020] This invention adopts a split design, which facilitates disassembly and installation and improves its maintainability;

[0021] The device proposed in this invention has complete functions and a high degree of automation. It requires no manual intervention after startup, thus reducing the workload of on-site personnel.

[0022] The device proposed in this invention can measure the wall thickness of steel pipes online for extended periods at high temperatures (600-1000℃), achieving real-time synchronization of relevant data, greatly improving the finished product qualification rate of steel pipes, and reducing production line costs. Attached Figure Description

[0023] Figure 1 This invention relates to an online automatic measurement device for the wall thickness of high-temperature steel pipes, which measures the wall thickness of the steel pipe as it passes through the pipe. The device ...

[0024] Figure 2 This is an isometric view of the main frame assembly of an online automatic measurement device for the wall thickness of high-temperature steel pipes, wherein (a) is the isometric view of the main frame assembly. Figure 1 (b) is the isometric view of the main frame assembly. Figure 2 .

[0025] Figure 3This is an isometric view of a connecting rod assembly on an online automatic measuring device for the wall thickness of high-temperature steel pipes.

[0026] Figure 4 This is an isometric view of a detection component on an online automatic measurement device for the wall thickness of high-temperature steel pipes, where (a) is the isometric view of the detection component. Figure 1 (b) is the isometric view of the detection component. Figure 2 .

[0027] Figure 5 This is an isometric view of the guide column and transmission ring of a high-temperature steel pipe on an online automatic measuring device for steel pipe wall thickness, wherein (a) is the isometric view of the guide column and transmission ring. Figure 1 (b) is the isometric view of the steel pipe guide column and the transmission ring. Figure 2 (c) is the isometric view of the steel pipe guide column and the transmission ring. Figure 3 .

[0028] Figure 6 This is an isometric drawing of an adjustment component on an online automatic measurement device for the wall thickness of a high-temperature steel pipe.

[0029] In the diagram: Main frame assembly 1, connecting rod assembly 2, drive assembly 3, second adjustment assembly 4, steel pipe to be tested 5, frame 6, top plate 7, right side plate 8, inlet side plate 9, left side plate 10, outlet side plate 11, first connecting rod 12, first connecting shaft 13, second connecting rod 14, second connecting shaft 15, connector 16, buffer spring 17, buffer connecting frame 18, floating joint 19, fixing nut 20, detection assembly 21, guide bushing 22, guide shaft 23, third connecting shaft 24, fourth connecting rod 25, probe frame 26, roller 27, mounting block 2 8, Roller shaft 29, Probe 30, Drive cylinder 31, Upper limit plate 32, Guide rail bracket 33, Heat insulation bracket 34, Linear guide rail 37, Transmission ring 38, Auxiliary support 39, First bearing support seat 40, Lead screw assembly 41, Lower limit plate 42, Second bearing support seat 43, Adjustment motor 44, First mounting hole 101, Second mounting hole 102, Third mounting hole 103, Fourth mounting hole 201, Fifth mounting hole 202, Sixth mounting hole 203, Seventh mounting hole 301, Eighth mounting hole 302, Ninth mounting hole 303. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0032] like Figure 1 As shown, the online automatic measurement device for the wall thickness of high-temperature steel pipes proposed in this invention includes a steel pipe guide column, a transmission ring 38, a main frame assembly 1, a connecting rod assembly 2, and a first adjustment assembly; the main frame assembly 1 is provided with a steel pipe guide column, which is used to transport the steel pipe 5 to be measured; a heat insulation bracket 34 is also attached to the inside of the steel pipe guide column, and the heat insulation bracket 34 is filled with heat insulation cotton and other materials to enhance the heat insulation function. The transmission ring 38 is set outside the steel pipe guide column and is coaxially arranged with the steel pipe guide column. The transmission ring 38 is located near the steel pipe outlet of the steel pipe guide column. The transmission ring 38 can slide axially on the steel pipe guide column. The transmission ring 38 is connected to the outlet side plate 11 of the main frame assembly 1 through the first adjustment component. Multiple connecting rod assemblies 2 are installed at equal intervals along the circumference near the steel pipe inlet of the steel pipe guide column. A detection component 21 is installed at the part of each connecting rod assembly 2 that extends into the steel pipe guide column. The connecting rod assembly 2 is also fixedly connected to the inlet side plate 9 of the main frame assembly 1 and to the transmission ring 38. The first adjustment component controls the transmission ring 38 to move axially. The transmission ring 38 drives each connecting rod assembly 2 to move radially until the structure of each connecting rod assembly 2 extending into the steel pipe guide column is released from the pipe wall of the steel pipe 5 to be tested, thereby adapting to different steel pipe diameters.

[0033] like Figure 2 (a) and Figure 2 As shown in (b), the main frame assembly 1 also includes a frame 6, a top plate 7, a right side plate 8, and a left side plate 10. The frame 6 houses steel pipe guide columns, a transmission ring 38, a connecting rod assembly 2, and a first adjustment assembly. The top plate 7 is installed on the top of the frame 6, the left side plate 10 is installed on the left side of the frame 6, the right side plate 8 is installed on the right side of the frame 6, an inlet side plate 9 is installed on the steel pipe inlet side of the frame 6, and an outlet side plate 11 is installed on the steel pipe outlet side of the frame 6, forming a relatively enclosed space inside the frame 6. The top plate 7 has a first mounting hole 101 and a second mounting hole 102, and the left side plate 10 has a third mounting hole 103. Cooling air enters through the first mounting hole 101 and the second mounting hole 102, and cooling air exits through the third mounting hole 103, providing cooling protection for the entire housing.

[0034] like Figure 3As shown, the linkage assembly 2 includes a first connecting rod 12, a first connecting shaft 13, a second connecting rod 14, a second connecting shaft 15, a connector 16, a buffer spring 17, a buffer connecting frame 18, a floating joint 19, a fixing nut 20, a guide sleeve 22, a guide shaft 23, a third connecting shaft 24, and a fourth connecting rod 25. The guide sleeve 22 is installed in the steel pipe guide column, and the axis of the guide sleeve 22 is located in the radial direction of the steel pipe. The guide shaft 23 is installed inside the guide sleeve 22 and is coaxially arranged with the guide sleeve 22. One end of the guide shaft 23 extends into the steel pipe guide column and is connected to the corresponding... The probe holder 26 of the detection component 21 is connected, and the other end of the guide shaft 23 is hinged to one end of the fourth link 25 through the third connecting shaft 24. The other end of the fourth link 25 is hinged to one end of the second link 14 through the second connecting shaft 15. The other end of the second link 14 is connected to the entrance side plate 9 of the main frame component 1 through the first link 12. The first link 12 is fixedly connected to the entrance side plate 9. The other end of the fourth link 25 is also connected to the connector 16. The other end of the fourth link 25, one end of the second link 14, and the connector 16 are all connected through the second connecting shaft 15. A guide rod is provided on the side of the connector 16 near the steel pipe inlet. A buffer connecting frame 18 is installed at the end of the guide rod, and a buffer spring 17 is sleeved on the guide rod. The buffer connecting frame 18 slides along the guide rod, causing the buffer spring 17 to deform. The end of the guide rod is limited by a fixing nut 20. Multiple auxiliary supports 39 arranged circumferentially are fixedly installed on the side of the transmission ring 38 near the steel pipe inlet. The buffer connecting frame 18 is connected to the corresponding auxiliary supports 39 on the transmission ring 38 through a floating joint 19. Figure 5 As shown in (b), the guide shaft 23 has a fourth mounting hole 201 and a sixth mounting hole 203, which correspond to the inlet and outlet of the cooling circulating water, respectively, and the fifth mounting hole 202 is connected to the compressed cooling air.

[0035] like Figure 4 (a) and Figure 4As shown in (b), the detection assembly 21 includes a probe frame 26, rollers 27, mounting blocks 28, roller shafts 29, and probes 30. The probe frame 26 is fixedly connected to the end of the guide shaft 23 of the connecting rod assembly 2 that extends into the guide column of the steel pipe. The probe 30 is installed in the probe frame 26. The corresponding rollers 27 are installed on both sides of the probe frame 26 through the corresponding mounting blocks 28 and roller shafts 29, respectively. The rollers 27 are in contact with the wall of the steel pipe 5 to be tested. At this time, the probes 30 are spaced apart from the wall of the steel pipe 5 to be tested. The probe holder 26 has a seventh mounting hole 301, an eighth mounting hole 302, and a ninth mounting hole 303. The eighth mounting hole 302 and the ninth mounting hole 303 are connected to the fourth mounting hole 201 and the sixth mounting hole 203 on the guide shaft 23 through pipes to realize the loop connection of cooling water. The seventh mounting hole 301 on the probe 30 is connected to the fifth mounting hole 202 on the guide shaft 23 to realize the connection of compressed cooling air. In this way, the detection component 21 achieves dual protection of water cooling and air cooling.

[0036] like Figure 5 As shown in (a), the first adjustment assembly includes a drive cylinder 31, which is fixedly connected to the outlet side plate 11 of the main frame assembly 1, and the piston rod of the drive cylinder 31 is connected to the transmission ring 38.

[0037] Multiple linear guide rails 37 are installed on the outer circumferential side of the steel pipe guide column at intervals along the circumference. Each linear guide rail 37 is arranged along the axial direction of the steel pipe, and a corresponding guide rail bracket 33 is slidably installed in each linear guide rail 37. Multiple protrusions are arranged at intervals along the circumference on the side of the transmission ring 38 near the steel pipe inlet. Each guide rail bracket 33 is fixedly connected to the corresponding protrusion on the side of the transmission ring 38. The drive cylinder 31 drives the transmission ring 38 to slide on the steel pipe guide column until the upper limit plate 32 and the lower limit plate 42 are in contact. The upper limit plate 32 is installed on the inner side of the transmission ring 38, and the lower limit plate 42 is installed on the outer circumferential side of the steel pipe guide column. The upper limit plate 32 and the lower limit plate 42 are paired to limit the transmission ring 38; that is, when the two are in contact, the transmission ring 38 and the steel pipe guide column are relatively fixed axially.

[0038] like Figure 5 As shown in (c), the online automatic measuring device also includes a second adjustment component 4, each of which is used to adjust the axial position of the lower limit plate 42 on the steel pipe guide column.

[0039] like Figure 6As shown, the second adjustment assembly 4 includes a first bearing support 40, a lead screw assembly 41, a second bearing support 43, and an adjustment motor 44. The adjustment motor 44 is fixedly installed on the outer circumferential side of the steel pipe guide column. The lead screw assembly 41 is fixedly installed on the outer circumferential side of the steel pipe guide column through the first bearing support 40 and the second bearing support 43. The output shaft of the adjustment motor 44 is connected to the lead screw assembly 41. The lower limit plate 42 is connected to the slider in the lead screw assembly 41. The adjustment motor 44 adjusts the axial position of the lower limit plate 42 on the steel pipe guide column through the lead screw assembly 41.

[0040] The working process of the online automatic measurement device for the wall thickness of high-temperature steel pipes proposed in this invention is as follows:

[0041] 1) such as Figure 6 As shown, before the work starts, according to the outer diameter of the steel pipe, the adjustment motor 44 on the second adjustment component 4 drives the lead screw component 41 to move left and right so that the lower limit plate 42 reaches the set position. The three drive cylinders 31 on the drive component 3 are pushed out, pushing the transmission ring 38 to move. When the upper limit plate 32 and the lower limit plate 42 come into contact, the transmission ring 38 stops. At the same time, the transmission ring 38 moves and pushes the 6 sets of connecting rod components 2 to drive the guide shaft 23 to move radially and vertically so that the detection component 21 reaches the set position.

[0042] 2) After the steel pipe 5 to be tested enters the main frame assembly 1, the surface of the steel pipe 5 to be tested contacts the roller 27 on the detection assembly 21. The highest point of the roller 27 is about 2mm higher than the probe to prevent the probe 35 from directly contacting the steel pipe 5 to be tested and causing damage. Due to the uneven surface of the steel pipe 5 to be tested and the wear of the conveyor roller, the actual contact line of the steel pipe 5 to be tested is a wavy line that floats up and down. The guide shaft 23 on the connecting rod assembly 2 also floats up and down with the buffer spring 17, which protects the detection assembly and keeps the detection distance of the probe stable, making the detection results more accurate.

[0043] 3) such as Figure 3 and Figure 4 As shown, the circulating cooling water enters from the fourth mounting hole 201 of the guide shaft 23 on the connecting rod assembly 2, passes through the eighth mounting hole 302 on the probe 30 on the detection assembly 21, and then exits from the sixth mounting hole 203 of the guide shaft 23 on the connecting rod assembly 2, thus completing the protection of the circulating cooling water of the detection assembly 21.

[0044] 4) such as Figure 3 and Figure 4 As shown, compressed cooling air enters from the fifth mounting hole 202 of the guide shaft 23 on the connecting rod assembly 2, and then enters the seventh mounting hole 301 on the probe 30 on the detection assembly 21, thus protecting the compressed cooling air of the detection assembly 21.

[0045] 5) such as Figure 2 (a) and Figure 2 As shown in (b), a large volume of cooling air enters from the first mounting hole 101 and the second mounting hole 102 on the top plate 7 of the main frame assembly 1, and then exits from the third mounting hole 103 on the left side plate 10 of the main frame assembly 1, forming a circulating cooling system. This system provides cooling protection for the main frame assembly 1 and its internal connecting rod assembly 2, drive assembly 3, and second adjustment assembly 4, enabling the entire machine to operate in a high-temperature environment for an extended period of time.

[0046] 6) After the test is completed, the three drive cylinders 31 on the drive assembly 3 retract, and the adjustment motor 44 on the second adjustment assembly 4 drives the lead screw assembly 41 to move left and right so that the lower limit plate 42 returns to its original position, completing one cycle.

[0047] Finally, it should be noted that the above embodiments and descriptions are only used to illustrate the technical solutions of the present invention and not to limit it. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the disclosure of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the protection scope of the claims of the present invention.

Claims

1. An online automatic measurement device for the wall thickness of high-temperature steel pipes, characterized in that, The system includes a steel pipe guide column, a transmission ring (38), a main frame assembly (1), a connecting rod assembly (2), and a first adjustment assembly. The main frame assembly (1) contains a steel pipe guide column for conveying the steel pipe to be tested (5). The transmission ring (38) is located outside the steel pipe guide column and is coaxially arranged with it. The transmission ring (38) is positioned near the steel pipe outlet of the steel pipe guide column and can slide axially on the steel pipe guide column. The transmission ring (38) is connected to the outlet side plate (11) of the main frame assembly (1) via the first adjustment assembly. Multiple connecting rod assemblies (2) are installed at circumferential intervals near the steel pipe inlet of the guide column. Each connecting rod assembly (2) is equipped with a detection component (21) at the end of its extension into the steel pipe guide column. The connecting rod assembly (2) is also connected to the inlet side plate (9) of the main frame assembly (1) and to the transmission ring (38). The first adjustment component adjusts the transmission ring (38) to move axially. The transmission ring (38) drives each connecting rod assembly (2) to move radially until the structure of each connecting rod assembly (2) extending into the steel pipe guide column contacts the pipe wall of the steel pipe (5) to be tested, thereby adapting to different steel pipe diameters. The linkage assembly (2) includes a first linkage (12), a first connecting shaft (13), a second linkage (14), a second connecting shaft (15), a connector (16), a buffer spring (17), a buffer connecting frame (18), a guide sleeve (22), a guide shaft (23), and a fourth linkage (25). The guide sleeve (22) is installed in the steel pipe guide column, and the axis of the guide sleeve (22) is located in the radial direction of the steel pipe. The guide shaft (23) is installed inside the guide sleeve (22), and the guide shaft (23) is coaxial with the guide sleeve (22). One end of the guide shaft (23) extends into the steel pipe guide column and is connected to the corresponding detection component (21). The other end of the guide shaft (23) is hinged to one end of the fourth link (25), the other end of the fourth link (25) is hinged to one end of the second link (14), the other end of the second link (14) is connected to the entrance side plate (9) of the main frame assembly (1) through the first link (12), the other end of the fourth link (25) is also connected to the connector (16), the connector (16) is provided with a guide rod on the side near the steel pipe inlet, a buffer connecting frame (18) is installed at the end of the guide rod and a buffer spring (17) is provided on the guide rod sleeve, the buffer connecting frame (18) slides along the guide rod; the buffer connecting frame (18) is connected to the transmission ring (38); The detection component (21) includes a probe frame (26), rollers (27), mounting blocks (28) and a probe (30); the probe frame (26) is connected to the connecting rod assembly (2), the probe frame (26) is equipped with a probe (30), and the two sides of the probe frame (26) are respectively equipped with corresponding rollers (27) through corresponding mounting blocks (28), and the rollers (27) are in contact with the wall of the steel pipe (5) to be tested.

2. The online automatic measurement device for the wall thickness of high-temperature steel pipes according to claim 1, characterized in that, The main frame assembly (1) also includes a frame (6), a top plate (7), a right side plate (8) and a left side plate (10). The frame (6) contains a steel pipe guide column, a transmission ring (38), a connecting rod assembly (2) and a first adjustment assembly. The top plate (7) is installed on the top of the frame (6), the left side plate (10) is installed on the left side of the frame (6), the right side plate (8) is installed on the right side of the frame (6), the inlet side plate (9) is installed on the steel pipe inlet side of the frame (6), and the outlet side plate (11) is installed on the steel pipe outlet side of the frame (6).

3. The online automatic measurement device for the wall thickness of high-temperature steel pipes according to claim 1, characterized in that, The first adjustment component includes a drive cylinder (31), which is fixedly connected to the outlet side plate (11) of the main frame assembly (1), and the piston rod of the drive cylinder (31) is connected to the transmission ring (38).

4. The online automatic measurement device for the wall thickness of high-temperature steel pipes according to claim 1, characterized in that, Multiple linear guide rails (37) are installed on the outer circumferential side of the steel pipe guide column. Each linear guide rail (37) is arranged along the axial direction of the steel pipe. A corresponding guide rail bracket (33) is slidably installed in each linear guide rail (37). Multiple protrusions are arranged circumferentially on the side of the transmission ring (38) near the steel pipe inlet. Each guide rail bracket (33) is fixedly connected to the corresponding protrusion on the side of the transmission ring (38).

5. The online automatic measurement device for the wall thickness of high-temperature steel pipes according to claim 1, characterized in that, The transmission ring (38) is equipped with an upper limit plate (32) on its inner side and a lower limit plate (42) is installed on the outer circumferential side of the steel pipe guide column. The upper limit plate (32) and the lower limit plate (42) are paired to limit the transmission ring (38).

6. The online automatic measurement device for the wall thickness of high-temperature steel pipe according to claim 5, characterized in that, The online automatic measuring device also includes a second adjustment component (4), each of which is used to adjust the axial position of the corresponding lower limit plate (42) on the steel pipe guide column.

7. The online automatic measurement device for the wall thickness of high-temperature steel pipes according to claim 6, characterized in that, The second adjustment component (4) includes a first bearing support (40), a lead screw assembly (41), a second bearing support (43), and an adjustment motor (44). The adjustment motor (44) is fixedly installed on the outer circumferential side of the steel pipe guide column. The lead screw assembly (41) is fixedly installed on the outer circumferential side of the steel pipe guide column through the first bearing support (40) and the second bearing support (43). The output shaft of the adjustment motor (44) is connected to the lead screw assembly (41). The lower limit plate (42) is connected to the slider in the lead screw assembly (41). The adjustment motor (44) adjusts the axial position of the lower limit plate (42) on the steel pipe guide column through the lead screw assembly (41).

8. The online automatic measurement device for the wall thickness of high-temperature steel pipes according to claim 1, characterized in that, The steel pipe guide column is also covered with a heat insulation bracket (34).

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