Auxiliary devices and methods for welding joints of water-cooled wall pipes

Abstract

This invention relates to the field of auxiliary devices for pipe welding, specifically an auxiliary device and method for welding alignment of water-cooled wall pipes. It includes two semi-rings, each with a semi-circular sliding ring on its outer wall. A semi-circular slide rail is slidably connected to the outer wall of the semi-circular sliding ring, and a semi-circular seat is fixedly connected to the outer wall of the semi-circular slide rail. An adjustable clamping mechanism for clamping the water-cooled wall pipe is installed on the outer wall of the semi-ring. A detection mechanism is installed on the side of one of the semi-circular seats near the pipe bevel, and an alignment mechanism is installed on the outer wall of the semi-circular seat. When the semi-circular seat rotates, the round head of the detection mechanism travels along the bevel of the water-cooled wall pipe. During this process, the swing amplitude of the pointer represents the degree of deviation between the center of the semi-circular seat and the center of the water-cooled wall pipe. If the swing amplitude is too large, the adjustable clamping mechanism keeps the semi-circular seat concentric with the water-cooled wall pipe, achieving alignment positioning and reducing alignment deviation.

Description

Technical Field

[0001] This invention relates to the field of auxiliary devices for pipe welding, specifically to auxiliary devices and methods for welding joints of water-cooled wall pipes. Background Technology

[0002] Water-cooled walls are the main heat-receiving part of a boiler. They consist of several rows of pipes distributed around the boiler furnace. Water or steam flows inside the water-cooled wall pipes, which mainly absorb the radiant heat from the high-temperature combustion products in the furnace. Welding of water-cooled wall pipes is an important part of boiler manufacturing and installation. The quality of the welding directly affects the safety and operating efficiency of the boiler. Before welding, the water-cooled wall pipes are beveled (V-shaped bevel), and the surface of the joint end of the water-cooled wall pipes after beveling is smooth.

[0003] In the welding process of boiler water-cooled wall pipes, it is necessary to align two pipe ends that are not yet joined, and then use argon arc welding to weld the bevel. In the actual welding process, it is necessary to align the water-cooled wall pipes. The most common method is to use an alignment clamp to clamp the pipes. However, the outer wall of the water-cooled wall pipes often has a lot of attachments, such as rust, corrosion or residual paint. Because of the presence of these attachments, it is difficult to keep the pipes and the alignment clamps concentric when aligning them with clamps. Therefore, it is possible that the clamps are aligned but the pipes themselves are not aligned, which can easily lead to misalignment and affect the welding quality. For example, the patent with publication number CN221159219U describes a water-cooled wall pipe welding alignment clamp. In this patent, the clamp is directly used to assist in pipe alignment. However, the misalignment of the pipes and the alignment clamp may cause alignment deviation.

[0004] To address this, an auxiliary device and method for welding joints of water-cooled wall pipes are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary device and method for welding water-cooled wall pipes, in order to solve the problem mentioned in the background art that "however, the outer wall of the water-cooled wall pipe may have oil stains, rust, or uneven paint thickness, making it difficult to keep the pipe and the fitting clamp concentric. Therefore, the fitting may be aligned but the pipe itself may not be aligned, which can easily lead to misalignment and affect the welding quality."

[0006] To achieve the above objectives, the present invention provides the following technical solution: a water-cooled wall pipe welding joint auxiliary device, comprising two semi-rings, a semi-circular sliding ring on the outer wall of each semi-ring, a semi-circular slide rail slidably connected to the outer wall of each semi-circular slide ring, a semi-circular seat fixedly connected to the outer wall of each semi-circular slide rail, an adjustable clamping mechanism for clamping the water-cooled wall pipe installed on the outer wall of each semi-ring, a detection mechanism installed on the side of one of the semi-circular seats near the pipe bevel, a jointing mechanism installed on the outer wall of the semi-circular seat, a first connecting structure connecting the outer walls of the two semi-rings, and a second connecting structure connecting the outer walls of the two semi-circular seats.

[0007] The detection mechanism includes a connecting rod, one end of which is fixedly connected to the lower surface of a semi-circular seat, and the other end of which is fixedly connected to a cylinder. A square rod is slidably connected inside the cylinder, and a round head is fixedly connected to the left end of the square rod. A circular groove is formed inside the cylinder. A circular plate is fixedly connected to the middle of the outer side wall of the square rod. A spring is fixedly connected between the circular plate and the inner right side wall of the circular groove. A connecting strip is provided at the right end of the square rod. A toothed plate is fixedly connected to the end of the connecting strip away from the connecting strip. A fixing block is provided on the right side wall of the connecting rod. A gear is hinged to the right end of the fixing block. The gear meshes with the toothed plate. A pointer is fixedly connected to the outer side wall of the gear. A mounting bracket is provided on the side of the fixing block away from the cylinder. A scale is fixedly connected to the right end of the mounting bracket. The toothed plate is relatively long while the gear is relatively small. Even if the movement range of the toothed plate is small, the toothed plate will have a large rotation range, thereby amplifying the eccentricity value between the circular seat and the water-cooled wall pipe.

[0008] Two semi-rings are joined together to form a complete ring; two semi-circular seats are joined together to form a complete circular seat; two semi-circular sliding rings are joined together to form a complete sliding ring; and two semi-circular slide rails are joined together to form a complete slide rail. The slide rail slides on the outer wall of the sliding ring, which can drive the circular seat to rotate, giving the circular seat a rotation function. When the semi-circular seat rotates, the round head of the detection mechanism travels on the bevel of the water-cooled wall pipe. During this process, the swing amplitude of the pointer represents the degree of deviation between the center of the semi-circular seat and the center of the water-cooled wall pipe. If the swing amplitude is too large, the adjustable clamping mechanism will keep the semi-circular seat and the water-cooled wall pipe concentric. The semi-circular seat is used to achieve the alignment and reduce the alignment deviation.

[0009] This invention allows for the use of the bevel of the water-cooled wall pipe as a reference surface to detect the concentricity of two pipes, and then readjusts them to ensure concentricity. This setup greatly increases the accuracy of the alignment, ensuring a deviation of less than 0.5mm and guaranteeing the quality of the weld.

[0010] Rotating the circular seat causes the round head to circle around the smooth, polished bevel surface. Under the elastic force of spring two, the round head remains in contact with the bevel of the water-cooled wall pipe. If there is a deviation between the center of the circular seat and the center of the pipe, the square rod will shift when the circular seat is rotated, causing the toothed plate to move and thus causing the pointer to swing. Based on the swing of the pointer, the position of the circular seat is adjusted by the adjustable clamping mechanism to keep the circular seat and the water-cooled wall pipe concentric. Then, the positioning rod on the surface of the circular seat is used to align and position the two water-cooled wall pipes. This avoids the adverse effects of oil stains, rust, or uneven paint thickness on the outer wall of the pipe on the pipe alignment, and helps to improve the alignment accuracy.

[0011] As a further preferred embodiment of this technical solution: the matching mechanism includes a positioning block, the outer side wall of the semi-circular seat is uniformly fixedly connected with the positioning block, the upper surface of the positioning block is provided with a positioning hole, and the inner side wall of the positioning hole is inserted with a positioning rod.

[0012] As a further preferred embodiment of this technical solution: the adjustable clamping mechanism includes mounting slots, and two mounting slots are symmetrically opened on the side of the semi-ring near the bevel of the water-cooled wall pipe. Two sliding rods are symmetrically slidably connected to the inner sidewall of the semi-ring. One end of the sliding rod extends into the mounting slot, and the other end of the sliding rod is hinged to a clamping plate. Two fixing brackets are symmetrically fixedly connected to the side of the semi-ring near the mounting slot. A threaded rod is threadedly connected to the outer sidewall of the fixing bracket. A lifting block is rotatably connected to the end of the threaded rod near the semi-ring through a bearing. A transmission rod is hinged to the side of the lifting block away from the threaded rod. The end of the transmission rod away from the lifting block is hinged to the outer sidewall of the sliding rod.

[0013] As a further preferred embodiment of this technical solution: two connecting blocks are symmetrically fixedly connected to the outer side wall of the slide rod, and a spring is fixedly connected between the connecting blocks and the opposite side of the mounting groove.

[0014] Under the above settings, if the pointer swings too far to the right, it means the center of the circular seat is biased to the right. In this case, find the nearest threaded rod, rotate it counterclockwise and then rotate the threaded rod opposite it clockwise to adjust the position of the circular seat to the left. Similarly, if the pointer swings too far to the left, it means the center of the circular seat is biased to the left. Find the nearest threaded rod, rotate the threaded rod opposite it counterclockwise and then rotate the threaded rod itself clockwise to adjust the position of the circular seat to the right, so that the circular seat and the water-cooled wall pipe are concentric. In the above, right means away from the water-cooled wall pipe, and left means towards the water-cooled wall pipe. When the threaded rod rotates clockwise, it pushes the transmission rod, which pushes the slide rod and the clamping plate, causing the clamping plate to move towards the pipe. When the spring is compressed, when the threaded rod rotates counterclockwise, it pulls the transmission rod, which pulls the slide rod and the clamping plate, causing the clamping plate to move away from the pipe. When the spring is extended, it can assist in the movement of the clamping plate.

[0015] As a further preferred embodiment of this technical solution: two guide rods are symmetrically fixedly connected to the side of the lifting block away from the transmission rod, the guide rods are slidably connected to the fixed frame, and a knob is fixedly connected to the end of the threaded rod away from the lifting block.

[0016] As a further preferred embodiment of this technical solution: a blind groove is provided on the right side wall of the square rod, a slide bar is slidably connected to the inner side wall of the blind groove, the connecting bar is fixedly connected to the adjacent side of the slide bar, a top rod is threadedly connected to the right side of the front surface of the square rod, and a knob is fixedly connected to the front end of the top rod.

[0017] As a further preferred embodiment of this technical solution: the connection structure includes a T-shaped groove, two T-shaped grooves are symmetrically opened on the left side wall of one half-ring, and two T-shaped blocks are symmetrically fixedly connected to the right side wall of the other half-ring, and the T-shaped blocks can be inserted into the T-shaped grooves.

[0018] As a further preferred embodiment of this technical solution: four locking blocks are symmetrically fixedly connected to the outer side wall of one of the semi-rings, and the outer side wall of the locking blocks is provided with locking holes; four mounting blocks are symmetrically fixedly connected to the outer side wall of the other semi-ring, and a locking rod is slidably connected to the outer side wall of the mounting block, and the locking rod can be inserted into the locking hole.

[0019] As a further preferred embodiment of this technical solution: the second connection structure includes slots, two slots are symmetrically opened on the left side wall of one of the semicircular seats, two insert plates are symmetrically fixedly connected to the right side wall of the other semicircular seat, two locking plates are symmetrically slidably connected to the left side of the upper surface of one of the semicircular seats, one end of the locking plate extends into the slot, and the other end of the locking plate is fixedly connected to a movable plate. A spring three is fixedly connected between the movable plate and the opposite side of the semicircular seat, a slot is opened on the outer side wall of the insert plate, the right side wall of the insert plate is a smooth inclined surface, the side of the locking plate that extends into the slot is a smooth inclined surface, and a pull ring is fixedly connected to the side of the movable plate away from the spring three.

[0020] Under the above settings, when connecting two semi-rings, inserting the T-shaped block into the T-groove enables a quick connection between the two semi-rings. Inserting the locking rod into the locking hole aligns the two semi-rings horizontally, preventing misalignment. When connecting two semi-circular seats, inserting the insert plate into the slot causes the insert plate to press against the card plate, causing the card plate to extend from the semi-circular seat. Spring 3 is stretched until the card plate aligns with the slot, at which point spring 3 shortens, pulling the card plate into the slot and locking the insert plate, thus securing the connection between the two semi-circular seats.

[0021] This invention also provides a method for using the auxiliary device for welding joints of water-cooled wall pipes, comprising the following steps:

[0022] S1. Connect the half rings to form a complete ring, and place them on the two water-cooled wall pipes that need to be welded. By rotating the threaded rod clockwise, the threaded rod moves and pushes the lifting block, transmission rod, slide rod and clamping plate, so that the clamping plate clamps the water-cooled wall pipe and fixes the ring on the outer wall of the pipe.

[0023] S2. Place the semicircular slide rail on the semicircular slide ring, and align the semicircular seats to form a complete circular seat. Rotate the circular seat, and under the elastic force of the second spring, the round head will remain in contact with the bevel of the water-cooled wall pipe. If there is a deviation between the center of the circular seat and the center of the pipe, the square rod will be displaced when the circular seat is rotated, causing the toothed plate to move, thereby causing the pointer to swing.

[0024] S3. If the pointer swings too far to the right, it means that the center of the round seat is biased to the right. At this time, find the nearest threaded rod, rotate the threaded rod counterclockwise and rotate the threaded rod opposite the threaded rod clockwise to adjust the position of the round seat to the left. Similarly, if the pointer swings too far to the left, it means that the center of the round seat is biased to the left. Make corresponding adjustments to the two clamps.

[0025] S4. When the circular seat has rotated a full circle and the pointer swing amplitude is small, it means that the center of the two semicircular seats is basically coincident with the center of the water-cooled wall pipe. At this time, the positioning rod is inserted through the positioning hole on the two opposite positioning blocks to assist the two water-cooled wall pipes in completing the welding joint.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. When the semicircular seat is rotated, the round head of the detection mechanism moves on the bevel of the water-cooled wall pipe. During this process, the swing amplitude of the pointer represents the degree of deviation between the center of the semicircular seat and the center of the water-cooled wall pipe. If the swing amplitude is too large, the semicircular seat and the water-cooled wall pipe are kept concentric by the adjustable clamping mechanism. The semicircular seat is used to achieve the alignment and reduce the alignment deviation.

[0028] 2. This invention can use the "bevel" of the water-cooled wall pipe as a reference surface to detect the concentricity of the two pipes, and then readjust them to make the two pipes concentric. This setting can greatly increase the accuracy of the joint, reduce the deviation, and ensure the quality of the welding.

[0029] 3. This invention uses a rotating circular base to make the circular head circle around the smooth, polished bevel surface. Under the elastic force of spring two, the circular head remains in contact with the bevel of the water-cooled wall pipe. If there is a deviation between the center of the circular base and the center of the pipe, the square rod will shift when the circular base is rotated, causing the toothed plate to move and thus causing the pointer to swing. Based on the swing of the pointer, the position of the circular base is adjusted by an adjustable clamping mechanism to keep the circular base and the water-cooled wall pipe concentric. Then, the positioning rod on the surface of the circular base is used to align and position the two water-cooled wall pipes. This avoids the adverse effects of oil stains, rust, or uneven paint thickness on the outer wall of the pipe on the pipe alignment, and helps to improve the alignment accuracy.

[0030] 4. If the pointer swings too far to the right during operation of this invention, it means that the center of the round seat is biased to the right. At this time, find the nearest threaded rod, rotate the threaded rod counterclockwise and rotate the threaded rod opposite the threaded rod clockwise to adjust the position of the round seat to the left. Similarly, if the pointer swings too far to the left, it means that the center of the round seat is biased to the left. Find the nearest threaded rod, rotate the threaded rod opposite the threaded rod counterclockwise and rotate the threaded rod itself clockwise to adjust the position of the round seat to the right, so that the round seat and the water-cooled wall pipe are concentric.

[0031] 5. When connecting two semi-rings, the present invention allows for quick connection between the two semi-rings by inserting a T-shaped block into a T-shaped groove. Inserting a locking rod into a locking hole ensures horizontal alignment of the two semi-rings, preventing misalignment. When connecting two semi-circular seats, inserting a plate into a slot causes the plate to press against the locking plate, causing it to extend from the semi-circular seat. Spring three is stretched until the locking plate aligns with the slot, at which point spring three shortens, pulling the locking plate into the slot and locking the plate in place, thus securing the connection between the two semi-circular seats. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0033] Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention;

[0034] Figure 3 This is a schematic cross-sectional view of the semi-ring structure in this invention;

[0035] Figure 4 In this invention Figure 3 Enlarged view of the structure of area A;

[0036] Figure 5 This is a schematic diagram of the structure of the cylinder and the square rod in this invention;

[0037] Figure 6 This is a cross-sectional view of the cylindrical structure in this invention;

[0038] Figure 7 This is a cross-sectional view of the semi-circular base in this invention.

[0039] Figure 8 In this invention Figure 7 Enlarged view of the structure of area B;

[0040] Figure 9 This is a schematic diagram of the semi-circular base and insert plate in this invention;

[0041] Figure 10 This is a schematic diagram of the semi-circular base and slot in this invention;

[0042] Figure 11 This is a schematic diagram of the structure of the semi-ring and the semi-circular slip ring in this invention;

[0043] Figure 12 In this invention Figure 11 Enlarged view of the C-region structure;

[0044] Figure 13 This is a schematic diagram of the semi-ring and T-groove structure of the present invention;

[0045] Figure 14 This is a schematic diagram of the structure of the semi-ring and the T-shaped block in this invention;

[0046] Figure 15 This is a schematic diagram of the semicircular slip ring and semicircular seat in this invention.

[0047] In the picture:

[0048] 1. Semi-ring; 2. Semi-circular slip ring; 3. Semi-circular slide rail; 4. Semi-circular seat; 5. Adjustable clamping mechanism; 6. Detection mechanism; 7. Alignment mechanism; 8. Connection structure one; 9. Connection structure two;

[0049] 51. Mounting slot; 52. Slide rod; 53. Clamping plate; 54. Fixing bracket; 55. Threaded rod; 56. Lifting block; 57. Transmission rod; 58. Connecting block; 59. Spring 1; 510. Guide rod; 511. Knob 1;

[0050] 61. Connecting rod; 62. Cylinder; 63. Square rod; 64. Round head; 65. Circular groove; 66. Circular plate; 67. Spring II; 68. Connecting strip; 69. Toothed plate; 610. Fixing block; 611. Gear; 612. Pointer; 613. Mounting bracket; 614. Dial; 615. Blind groove; 616. Sliding bar; 617. Top rod; 618. Knob II;

[0051] 71. Positioning block; 72. Positioning hole; 73. Positioning rod;

[0052] 81. T-slot; 82. T-block; 83. Locking block; 84. Mounting block; 85. Locking rod; 86. Locking hole;

[0053] 91. Slot; 92. Insert plate; 93. Card plate; 94. Card slot; 95. Movable plate; 96. Spring 3; 97. Pull ring. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0055] Please see Figure 1-15 The present invention provides a technical solution: a water-cooled wall pipe welding joint auxiliary device, comprising two semi-rings 1, a semi-circular sliding ring 2 on the outer side wall of the semi-ring 1, a semi-circular slide rail 3 slidably connected to the outer side wall of the semi-circular slide rail 2, a semi-circular seat 4 fixedly connected to the outer side wall of the semi-circular slide rail 3, an adjustable clamping mechanism 5 for clamping the water-cooled wall pipe installed on the outer side wall of the semi-ring 1, a detection mechanism 6 installed on the side of one semi-circular seat 4 near the pipe bevel, a jointing mechanism 7 installed on the outer side wall of the semi-circular seat 4, a connecting structure 1 8 connecting the outer side walls of the two semi-rings 1, and a connecting structure 2 9 connecting the outer side walls of the two semi-circular seats 4.

[0056] The testing mechanism 6 includes a connecting rod 61. One end of the connecting rod 61 is fixedly connected to the lower surface of a semi-circular seat 4, and the other end of the connecting rod 61 is fixedly connected to a cylinder 62. A square rod 63 is slidably connected inside the cylinder 62. A round head 64 is fixedly connected to the left end of the square rod 63. A circular groove 65 is formed inside the cylinder 62. A circular plate 66 is fixedly connected to the middle of the outer side wall of the square rod 63. A spring 67 is fixedly connected between the circular plate 66 and the inner right side wall of the circular groove 65. A connecting strip 68 is provided at the right end of the square rod 63. A tooth is fixedly connected to the end of the connecting strip 68 away from the connecting strip 68. The right side wall of the plate 69 and the connecting rod 61 is provided with a fixing block 610. The right end of the fixing block 610 is hinged with a gear 611. The gear 611 meshes with the toothed plate 69. The outer side wall of the gear 611 is fixedly connected with a pointer 612. The side of the fixing block 610 away from the cylinder 62 is provided with a mounting bracket 613. The right end of the mounting bracket 613 is fixedly connected with a dial 614. The toothed plate 69 is relatively long while the gear 611 is relatively small. Even if the movement range of the toothed plate 69 is small, the toothed plate 69 will have a large rotation range, which will amplify the eccentricity value between the round seat and the water-cooled wall pipe.

[0057] Two semi-rings 1 are joined together to form a complete ring, two semi-circular seats 4 are joined together to form a complete circular seat, two semi-circular sliding rings 2 are joined together to form a complete sliding ring, and two semi-circular slide rails 3 are joined together to form a complete slide rail. The slide rails slide on the outer wall of the sliding rings, which can drive the circular seats to rotate, giving the circular seats a rotation function. When the semi-circular seat 4 is rotated, the round head 64 of the detection mechanism 6 moves on the bevel of the water-cooled wall pipe. During this process, the swing amplitude of the pointer 612 represents the degree of deviation between the center of the semi-circular seat 4 and the center of the water-cooled wall pipe. If the swing amplitude is too large, the adjustable clamping mechanism 5 will keep the semi-circular seat 4 and the water-cooled wall pipe concentric. The semi-circular seat 4 is used to achieve the alignment and reduce the alignment deviation.

[0058] To avoid the problem that "the outer wall of the water-cooled wall pipe may have oil stains, rust, or uneven paint thickness, making it difficult to keep the pipe and the mating clamp concentric, resulting in the clamp being aligned but the pipe itself not, which easily leads to misalignment and affects the welding quality," this invention uses the "bevel" of the water-cooled wall pipe as a reference surface to check the concentricity of the two pipes, and then readjusts them to make them concentric. This setting can greatly increase the accuracy of the mating, making the deviation less than 0.5mm, and ensuring the quality of the welding.

[0059] Rotating the round seat causes the round head 64 to circle around the smooth, polished bevel surface. Under the elastic force of the second spring 67, the round head 64 remains in contact with the bevel of the water-cooled wall pipe. If there is a deviation between the center of the round seat and the center of the pipe, the square rod 63 will shift when the round seat is rotated, causing the toothed plate 69 to move, which in turn causes the pointer 612 to swing. Based on the swing of the pointer 612, the position of the round seat is adjusted by the adjustable clamping mechanism 5 to keep the round seat and the water-cooled wall pipe concentric. Then, the positioning rod 73 on the surface of the round seat is used to position the two water-cooled wall pipes together, avoiding the adverse effects of oil stains, rust, or uneven paint thickness on the pipe outer wall on the pipe alignment, and improving the alignment accuracy.

[0060] In this embodiment, specifically: the alignment mechanism 7 includes a positioning block 71, the outer side wall of the semi-circular seat 4 is uniformly fixedly connected with the positioning block 71, the upper surface of the positioning block 71 is provided with a positioning hole 72, and the inner side wall of the positioning hole 72 is inserted with a positioning rod 73.

[0061] In this embodiment, specifically: the adjustable clamping mechanism 5 includes mounting grooves 51. Two mounting grooves 51 are symmetrically opened on the side of the semi-ring 1 near the water-cooled wall pipe bevel. Two sliding rods 52 are symmetrically slidably connected to the inner side wall of the semi-ring 1. One end of the sliding rod 52 extends into the mounting groove 51, and the other end of the sliding rod 52 is hinged to a clamping plate 53. Two fixing brackets 54 are symmetrically fixedly connected on the side of the semi-ring 1 near the mounting groove 51. A threaded rod 55 is threadedly connected to the outer side wall of the fixing bracket 54. A lifting block 56 is rotatably connected to the end of the threaded rod 55 near the semi-ring 1 through a bearing. A transmission rod 57 is hinged to the side of the lifting block 56 away from the threaded rod 55. The end of the transmission rod 57 away from the lifting block 56 is hinged to the outer side wall of the sliding rod 52.

[0062] In this embodiment, specifically: two connecting blocks 58 are symmetrically fixedly connected to the outer wall of the slide bar 52, and a spring 59 is fixedly connected between the connecting block 58 and the opposite side of the mounting groove 51.

[0063] Under the above settings, if the pointer 612 swings too far to the right, it indicates that the center of the circular seat is biased to the right. In this case, find the nearest threaded rod 55, rotate it counterclockwise and then rotate the threaded rod 55 opposite it clockwise to adjust the position of the circular seat to the left. Similarly, if the pointer 612 swings too far to the left, it indicates that the center of the circular seat is biased to the left. Find the nearest threaded rod 55, rotate the threaded rod 55 opposite it counterclockwise and then rotate the threaded rod 55 itself clockwise to adjust the position of the circular seat to the right, so that the circular seat is aligned with the water-cooled wall tube. As the paths converge, the right direction mentioned above represents the direction away from the water-cooled wall pipe, while the left direction represents the direction closer to the water-cooled wall pipe. When the threaded rod 55 rotates clockwise, it pushes the transmission rod 57, which in turn pushes the slide rod 52 and the clamping plate 53, causing the clamping plate 53 to move closer to the pipe. The spring 59 is compressed. When the threaded rod 55 rotates counterclockwise, it pulls the transmission rod 57, which in turn pulls the slide rod 52 and the clamping plate 53, causing the clamping plate 53 to move away from the pipe. The extension of the spring 59 assists in the movement of the clamping plate 53.

[0064] In this embodiment, specifically: two guide rods 510 are symmetrically fixedly connected to the side of the lifting block 56 away from the transmission rod 57. The guide rods 510 are slidably connected to the fixed frame 54. A knob 511 is fixedly connected to the end of the threaded rod 55 away from the lifting block 56. The lifting block 56 and the guide rods 510 move up and down together to prevent the lifting block 56 from rotating with the threaded rod 55.

[0065] In this embodiment, specifically: a blind groove 615 is provided on the right side wall of the square rod 63, and a slide bar 616 is slidably connected to the inner side wall of the blind groove 615. The connecting bar 68 is fixedly connected to the adjacent side of the slide bar 616. A top rod 617 is threadedly connected to the right side of the front surface of the square rod 63. A knob 618 is fixedly connected to the front end of the top rod 617. After the clamping plate 53 clamps the water-cooled wall pipe, the toothed plate 69 can be moved left and right by moving the slide bar 616, so that the pointer 612 points to the middle of the scale 614, thereby achieving zeroing.

[0066] In this embodiment, specifically: the connection structure 8 includes a T-shaped groove 81, two T-shaped grooves 81 are symmetrically opened on the left side wall of one half-ring 1, and two T-shaped blocks 82 are symmetrically fixedly connected to the right side wall of the other half-ring 1, and the T-shaped blocks 82 can be inserted into the T-shaped grooves 81.

[0067] With the above settings, when connecting two half-rings 1, inserting the T-shaped block 82 into the T-shaped groove 81 can achieve a quick connection between the two half-rings 1.

[0068] In this embodiment, specifically: four locking blocks 83 are symmetrically fixedly connected to the outer side wall of one half-ring 1, and locking holes 86 are opened on the outer side wall of the locking blocks 83; four mounting blocks 84 are symmetrically fixedly connected to the outer side wall of the other half-ring 1, and locking rods 85 are slidably connected to the outer side wall of the mounting blocks 84; the locking rods 85 can be inserted into the locking holes 86.

[0069] With the above settings, inserting the locking rod 85 into the locking hole 86 will align the two semi-rings 1 horizontally, preventing misalignment.

[0070] In this embodiment, specifically: the connecting structure 2 9 includes slots 91, two slots 91 are symmetrically opened on the left side wall of one semicircular seat 4, two insert plates 92 are symmetrically fixedly connected to the right side wall of the other semicircular seat 4, two locking plates 93 are symmetrically slidably connected to the left side of the upper surface of one semicircular seat 4, one end of the locking plate 93 extends into the slot 91, and the other end of the locking plate 93 is fixedly connected to a movable plate 95. A spring 3 96 is fixedly connected between the movable plate 95 and the opposite side of the semicircular seat 4, a slot 94 is opened on the outer side wall of the insert plate 92, the right side wall of the insert plate 92 is a smooth inclined surface, the side of the locking plate 93 that extends into the slot 91 is a smooth inclined surface, and a pull ring 97 is fixedly connected to the side of the movable plate 95 away from the spring 3 96.

[0071] Under the above configuration, when docking the two semicircular seats 4, insert plate 92 is inserted into slot 91. Insert plate 92 presses card plate 93 to make card plate 93 extend out of semicircular seat 4. Spring 3 96 is stretched. When card plate 93 is aligned with slot 94, spring 3 96 shortens and pulls card plate 93 into slot 94, locking insert plate 92 and realizing the connection and fixation between the two semicircular seats 4.

[0072] This invention also provides a method for using the auxiliary device for welding joints of water-cooled wall pipes, comprising the following steps:

[0073] S1. Connect the half ring 1 to form a complete ring, and put it on the two water-cooled wall pipes that need to be welded. By rotating the threaded rod 55 clockwise, the threaded rod 55 moves and pushes the lifting block 56, transmission rod 57, slide rod 52 and clamping plate 53, so that the clamping plate 53 clamps the water-cooled wall pipe and fixes the ring on the outer wall of the pipe.

[0074] S2. Place the semicircular slide rail 3 onto the semicircular slide ring 2, and connect the semicircular seat 4 to form a complete circular seat. Rotate the circular seat, and under the elastic force of the spring 67, the round head 64 remains in contact with the bevel of the water-cooled wall pipe. If there is a deviation between the center of the circular seat and the center of the pipe, the square rod 63 will be displaced when the circular seat is rotated, causing the toothed plate 69 to move, thereby causing the pointer 612 to swing.

[0075] S3. If the pointer 612 swings too far to the right, it means that the center of the round seat is biased to the right. At this time, find the nearest threaded rod 55, rotate the threaded rod 55 counterclockwise and rotate the threaded rod 55 opposite the threaded rod 55 clockwise to adjust the position of the round seat to the left. Similarly, if the pointer 612 swings too far to the left, it means that the center of the round seat is biased to the left. Make corresponding adjustments to the two clamps 53.

[0076] S4. When the circular seat has rotated a full circle and the pointer 612 swings with a small amplitude, it means that the center of the two semicircular seats 4 is basically coincident with the center of the water-cooled wall pipe. At this time, the positioning rod 73 is inserted through the positioning hole 72 on the two opposite positioning blocks 71 to assist the two water-cooled wall pipes in completing the welding joint.

[0077] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding joint auxiliary device for water-cooled wall pipes, characterized in that: It includes two semi-rings (1), the outer side wall of the semi-rings (1) is provided with a semi-circular slip ring (2), the outer side wall of the semi-circular slip ring (2) is slidably connected with a semi-circular slide rail (3), the outer side wall of the semi-circular slide rail (3) is fixedly connected with a semi-circular seat (4), the outer side wall of the semi-rings (1) is equipped with an adjustable clamping mechanism (5) for clamping water-cooled wall pipes, one of the semi-circular seats (4) is equipped with a detection mechanism (6) on the side near the pipe bevel, the outer side wall of the semi-circular seat (4) is equipped with a matching mechanism (7), the outer side walls of the two semi-rings (1) are connected by a first connection structure (8), and the outer side walls of the two semi-circular seats (4) are connected by a second connection structure (9). The detection mechanism (6) includes a connecting rod (61), one end of which is fixedly connected to the lower surface of a semi-circular seat (4), and the other end of which is fixedly connected to a cylinder (62). A square rod (63) is slidably connected inside the cylinder (62), and a round head (64) is fixedly connected to the left end of the square rod (63). A circular groove (65) is provided inside the cylinder (62), and a circular plate (66) is fixedly connected to the middle of the outer side wall of the square rod (63). A spring (67) is fixedly connected between the circular plate (66) and the inner right side wall of the circular groove (65). The right end of the square rod (63) is provided with a connecting strip (68), and a toothed plate (69) is fixedly connected to the end of the connecting strip (68) away from the connecting strip (68). The right side wall of the connecting rod (61) is provided with a fixing block (610), and a gear (611) is hinged to the right end of the fixing block (610). The gear (611) meshes with the toothed plate (69). A pointer (612) is fixedly connected to the outer side wall of the gear (611). A mounting bracket (613) is provided on the side of the fixing block (610) away from the cylinder (62). A dial (614) is fixedly connected to the right end of the mounting bracket (613). Two semi-rings (1) are joined together to form a complete ring, and two semi-circular seats (4) are joined together to form a complete circular seat. When rotating the semi-circular seat (4), the round head (64) of the detection mechanism (6) moves on the bevel of the water-cooled wall pipe. During this process, the swing amplitude of the pointer (612) represents the degree of deviation between the center of the semi-circular seat (4) and the center of the water-cooled wall pipe. If the swing amplitude is too large, the semi-circular seat (4) and the water-cooled wall pipe are kept concentric by the adjustable clamping mechanism (5). The semi-circular seat (4) is used to achieve the positioning and reduce the positioning deviation.

2. The auxiliary device for welding joints of water-cooled wall pipes according to claim 1, characterized in that: The matching mechanism (7) includes a positioning block (71). The positioning block (71) is uniformly fixedly connected to the outer wall of the semi-circular seat (4). The upper surface of the positioning block (71) is provided with a positioning hole (72). A positioning rod (73) is inserted into the inner wall of the positioning hole (72).

3. The auxiliary device for welding joints of water-cooled wall pipes according to claim 2, characterized in that: The adjustable clamping mechanism (5) includes an installation groove (51). Two installation grooves (51) are symmetrically opened on the side of the semi-ring (1) near the water-cooled wall pipe bevel. Two slide rods (52) are symmetrically slidably connected to the inner side wall of the semi-ring (1). One end of the slide rod (52) extends into the installation groove (51), and the other end of the slide rod (52) is hinged to a clamping plate (53). Two fixing brackets (54) are symmetrically fixedly connected on the side of the semi-ring (1) near the installation groove (51). A threaded rod (55) is threadedly connected to the outer side wall of the fixing bracket (54). A lifting block (56) is rotatably connected to the end of the threaded rod (55) near the semi-ring (1) through a bearing. A transmission rod (57) is hinged to the side of the lifting block (56) away from the threaded rod (55). The end of the transmission rod (57) away from the lifting block (56) is hinged to the outer side wall of the slide rod (52).

4. The auxiliary device for welding joints of water-cooled wall pipes according to claim 3, characterized in that: Two connecting blocks (58) are symmetrically fixedly connected to the outer side wall of the slide bar (52), and a spring (59) is fixedly connected between the connecting block (58) and the opposite side of the mounting groove (51).

5. The auxiliary device for welding joints of water-cooled wall pipes according to claim 4, characterized in that: Two guide rods (510) are symmetrically fixedly connected to the side of the lifting block (56) away from the transmission rod (57). The guide rods (510) are slidably connected to the fixed frame (54). A knob (511) is fixedly connected to the end of the threaded rod (55) away from the lifting block (56).

6. The auxiliary device for welding joints of water-cooled wall pipes according to claim 5, characterized in that: A blind groove (615) is provided on the right side wall of the square rod (63). A slide bar (616) is slidably connected to the inner side wall of the blind groove (615). The connecting bar (68) is fixedly connected to the adjacent side of the slide bar (616). A top rod (617) is threadedly connected to the right side of the front surface of the square rod (63). A knob (618) is fixedly connected to the front end of the top rod (617).

7. The auxiliary device for welding joints of water-cooled wall pipes according to claim 6, characterized in that: The first connection structure (8) includes a T-shaped groove (81). Two T-shaped grooves (81) are symmetrically opened on the left side wall of one of the semi-rings (1), and two T-shaped blocks (82) are symmetrically fixedly connected to the right side wall of the other semi-ring (1). The T-shaped blocks (82) can be inserted into the T-shaped grooves (81).

8. The auxiliary device for welding joints of water-cooled wall pipes according to claim 7, characterized in that: Four locking blocks (83) are symmetrically fixedly connected to the outer side wall of one of the semi-rings (1), and the outer side wall of the locking block (83) is provided with a locking hole (86). Four mounting blocks (84) are symmetrically fixedly connected to the outer side wall of the other semi-ring (1), and a locking rod (85) is slidably connected to the outer side wall of the mounting block (84). The locking rod (85) can be inserted into the locking hole (86).

9. The auxiliary device for welding joints of water-cooled wall pipes according to claim 8, characterized in that: The second connection structure (9) includes slots (91). Two slots (91) are symmetrically opened on the left side wall of one of the semicircular seats (4). Two insert plates (92) are symmetrically fixedly connected to the right side wall of the other semicircular seat (4). Two locking plates (93) are symmetrically slidably connected to the left side of the upper surface of one of the semicircular seats (4). One end of the locking plate (93) extends into the slot (91). The other end of the locking plate (93) is fixedly connected to a movable plate (95). A spring three (96) is fixedly connected between the movable plate (95) and the opposite side of the semicircular seat (4). A slot (94) is opened on the outer side wall of the insert plate (92). The right side wall of the insert plate (92) is a smooth inclined surface. The side of the locking plate (93) that extends into the slot (91) is a smooth inclined surface. A pull ring (97) is fixedly connected to the side of the movable plate (95) away from the spring three (96).

10. The method of using the auxiliary device for welding joints of water-cooled wall pipes according to claim 9, characterized in that, Includes the following steps: S1. Connect the half ring (1) to form a complete ring, and put it on the two water-cooled wall pipes that need to be welded. By rotating the threaded rod (55) clockwise, the threaded rod (55) moves and pushes the lifting block (56), transmission rod (57), slide rod (52) and clamp (53) so that the clamp (53) clamps the water-cooled wall pipe and fixes the ring on the outer wall of the pipe. S2. Place the semicircular slide rail (3) on the semicircular slide ring (2), and connect the semicircular seat (4) to form a complete circular seat. Rotate the circular seat, and under the elastic force of the second spring (67), the round head (64) will remain attached to the bevel of the water-cooled wall pipe. If there is a deviation between the circular seat and the center of the pipe, the square rod (63) will be displaced when the circular seat is rotated, which will drive the toothed plate (69) to move, thereby causing the pointer (612) to swing. S3. If the pointer (612) swings too far to the right, it means that the center of the round seat is biased to the right. At this time, find the nearest threaded rod (55), rotate the threaded rod (55) counterclockwise and rotate the threaded rod (55) opposite the threaded rod (55) clockwise to adjust the position of the round seat to the left. Similarly, if the pointer (612) swings too far to the left, it means that the center of the round seat is biased to the left. Make corresponding adjustments to the two clamps (53). S4. When the circular seat has rotated a full circle and the pointer (612) swings with a small amplitude, it means that the center of the two semicircular seats (4) is basically coincident with the center of the water-cooled wall pipe. At this time, the positioning rod (73) is inserted through the positioning hole (72) on the two opposite positioning blocks (71) to assist the two water-cooled wall pipes in completing the welding joint.

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