Positioning device for boiler pipeline

Abstract

The invention discloses a boiler pipeline positioning device, and relates to the technical field of boiler pipeline positioning.The boiler pipeline positioning device comprises a base, a moving seat is arranged at the upper end of the base, a moving groove is formed in the middle of the upper end of the base, a moving structure for adjusting the position of the moving seat is arranged in the moving groove, and two fixing plates are symmetrically fixed to the two sides of the upper end of the moving seat; and a fixer for positioning and fixing the boiler pipeline is rotationally mounted on each fixing plate. According to the fixing device, the inner gear ring drives the other long gears to rotate synchronously, the long gears drive the racks to move along the sliding grooves, the arc-shaped plates are pushed to translate in the axis direction of the pipeline, and therefore the fixing device can adapt to pipelines of various specifications, and the reset springs and the adjusting blocks arranged at the ends of the arc-shaped plates enable the rollers to adapt to pipeline surface deformation; rigid positioning and flexible clamping are organically combined, stable clamping of the pipeline during thermal expansion or stress change is guaranteed, and the problem that in a traditional fixing mode, due to uneven stress, the pipeline deflects, and sealing-off is caused is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler pipeline positioning, and specifically to a positioning device for boiler pipelines. Background Art

[0002] In the field of boiler pipeline processing and maintenance, the precise positioning, stable clamping, and surface treatment of pipelines are key links affecting welding quality and operation safety.

[0003] However, existing boiler pipeline positioning devices mostly adopt rigid clamping structures (such as long flat iron spot welding or mechanical clamps). The clamping force distribution is uneven, and it is easy to cause deflection, welding detachment, and even pipeline deformation due to pipeline thermal expansion or external forces. In addition, the specifications of traditional fixtures are fixed, and it is difficult to adapt to pipelines with different diameters, resulting in poor equipment versatility and the need to frequently replace fixtures to meet diverse production requirements.

[0004] Based on this, a positioning device for boiler pipelines is now provided to eliminate the drawbacks of existing devices. Summary of the Invention

[0005] The purpose of the present invention is to provide a positioning device for boiler pipelines to solve the problems in the background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A positioning device for boiler pipelines includes a base. A moving seat is arranged at the upper end of the base, and a moving groove is opened in the middle of the upper end of the base. A moving structure for adjusting the position of the moving seat is arranged inside the moving groove. Two fixing plates are symmetrically fixed on both sides of the upper end of the moving seat. A fixer for positioning and fixing the boiler pipeline is rotatably installed on each fixing plate. A cleaning structure for cleaning the boiler pipeline is arranged between the two fixing plates.

[0008] Preferably, a rotating groove is opened inside the fixer. An internal gear ring is rotatably arranged on the inner wall of the rotating groove. A number of long gears are rotatably installed at equal angles in the rotating groove. All the long gears are meshed with the internal gear ring. A number of sliding grooves are opened in the fixer at equal angles. A rack is slidably arranged in each sliding groove. Each long gear is meshed with a rack. One end of each rack extends to the inner circle of the fixer and is fixedly connected to an arc-shaped plate. An electric motor two is installed at one end of the fixer far from the other fixer. The output end of the electric motor two extends into the rotating groove and is fixed to a long gear. An external gear ring is fixed at the other end of the fixer. The external gear ring is connected to the cleaning structure located between the two fixing plates.

[0009] Preferably, a spring groove is formed in the middle of the end of the arc-shaped plate away from the rack. On both sides of the inner top of the spring groove, two reset springs are symmetrically fixed. The lower ends of the two reset springs are respectively fixed to two adjusting blocks, and a roller is rotatably installed between the two adjusting blocks.

[0010] Preferably, the cleaning structure includes a cleaning unit, a purging unit, and a motor three. The motor three is installed on one of the fixing plates, and the output end of the motor three is fixedly connected to the cleaning unit on the fixing plate where it is located.

[0011] Preferably, the cleaning unit includes two first gears respectively installed at the opposite ends of the two fixing plates. One of the first gears is fixedly connected to the output end of the motor three. Each first gear meshes with an external toothed ring on its side. The external toothed ring is connected to the purging unit. A rotating rod is fixed between the two first gears, and a cleaning roller is fixed to the outer wall of the rotating rod. A number of bristles are fixed to the outer wall of the cleaning roller, and the number of bristles is in contact with the outer surface of the boiler pipeline.

[0012] Preferably, the bristles are made of nylon.

[0013] Preferably, the purging unit includes two second gears respectively installed on the two fixing plates. Each second gear meshes with an external toothed ring on its side. A reciprocating screw rod is fixed between the two second gears. The reciprocating screw rod is threadedly connected to a purging block. A guide rod is fixed between the two fixing plates. The guide rod is located above the reciprocating screw rod, and the outer wall of the guide rod slides with the purging block.

[0014] Preferably, a nozzle is installed on the purging block. The position of the nozzle orifice is directly opposite to the outer wall of the boiler pipeline. The nozzle is connected to an external air jet device through an air pipe.

[0015] Preferably, the moving structure includes a motor one installed at one end of the base and a first screw rod rotatably installed inside the moving groove. The output end of the motor one extends into the moving groove and is fixedly connected to the first screw rod. A moving block slides inside the moving groove. The moving block is fixed to the middle of the lower end of the moving seat, and the moving block is threadedly connected to the first screw rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The fixator of the present invention drives the remaining long gears to rotate synchronously through the internal toothed ring. These long gears drive the rack to move along the sliding groove, pushing the arc-shaped plate to translate towards the pipe axis direction, so as to be able to adapt to various specifications of pipes. The reset springs and adjusting blocks provided at the end of the arc-shaped plate enable the rollers to adapt to the deformation of the pipe surface, forming an organic combination of rigid positioning and flexible clamping. It not only ensures the stable clamping of the pipe during thermal expansion or force change, but also avoids the problem of pipe skew and de-welding caused by uneven force in the traditional fixing method.

[0018] 2. In the present invention, by combining a fixator with a cleaning structure, after the fixator completes the rigid clamping of the pipeline, the external tooth ring at its end synchronously transmits the rotational torque to the cleaning unit and the purging unit. The first gear of the cleaning unit drives the rotating rod to rotate, causing the nylon bristles to rotate and clean the surface of the pipeline. At the same time, the second gear of the purging unit drives the reciprocating screw to rotate, causing the nozzle to move reciprocally along the axial direction of the pipeline and spray high-pressure air flow, ensuring that when the pipeline rotates continuously during the welding process, the attachments on its surface are synchronously removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the present invention.

[0020] Figure 2 It is a schematic internal structural diagram of the fixator of the present invention.

[0021] Figure 3 It is a schematic structural diagram of the external tooth ring of the fixator of the present invention.

[0022] Figure 4 It is a schematic internal structural diagram of the spring groove of the present invention.

[0023] Figure 5 It is a schematic structural diagram of the cleaning structure of the present invention.

[0024] Figure 6 It is a partial schematic diagram of the cleaning structure of the present invention.

[0025] Figure 7 It is a schematic structural diagram of the moving structure of the present invention.

[0026] Annotation of reference numerals: 1. Base; 11. Moving groove; 2. Moving seat; 21. Moving block; 3. Fixed plate; 4. Moving structure; 401. Motor 1; 402. Screw 1; 5. Fixator; 51. Rotating groove; 511. Internal tooth ring; 512. Long gear; 52. Sliding groove; 521. Rack; 522. Arc plate; 5221. Spring groove; 5222. Adjusting block; 5223. Return spring; 5224. Roller; 53. Motor 2; 54. External tooth ring; 6. Cleaning structure; 61. Cleaning unit; 611. First gear; 612. Rotating rod; 613. Cleaning roller; 614. Bristles; 62. Purging unit; 621. Second gear; 622. Reciprocating screw; 623. Guide rod; 63. Motor 3; 7. Purging block; 71. Air pipe; 72. Nozzle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Embodiment 1

[0029] In one embodiment, as Figure 1 shown, a positioning device for a boiler pipeline includes a base 1. A moving seat 2 is arranged at the upper end of the base 1, and a moving groove 11 is formed in the middle of the upper end of the base 1. A moving structure 4 for adjusting the position of the moving seat 2 is arranged inside the moving groove 11. Two fixing plates 3 are symmetrically and fixedly arranged on both sides of the upper end of the moving seat 2. A fixator 5 for positioning and fixing the boiler pipeline is rotatably installed on each fixing plate 3. A cleaning structure 6 for cleaning the boiler pipeline is arranged between the two fixing plates 3.

[0030] In this embodiment, first, the boiler pipeline is positioned and fixed by the fixator 5. After the pipeline is completely fixed, the cleaning structure 6 arranged between the two fixing plates 3 cleans the boiler pipeline. Then, the moving structure 4 embedded in the moving groove 11 can drive the moving seat 2 to move axially along the base 1, so as to adjust the position of the moving seat 2, and further adjust the position of the boiler pipeline.

[0031] Embodiment 2

[0032] In an alternative embodiment, as Figures 2 to 4 shown, a rotating groove 51 is formed inside the fixator 5. An internal gear ring 511 is rotatably arranged on the inner wall of the rotating groove 51. A plurality of long gears 512 are rotatably installed in the rotating groove 51 at equal angles. The plurality of long gears 512 are all meshed with the internal gear ring 511. The fixator 5 is provided with a plurality of sliding grooves 52 at equal angles. A rack 521 is slidably arranged in each sliding groove 52. Each long gear 512 is meshed with a rack 521. One end of each rack 521 extends to the inner circle of the fixator 5 and is fixedly connected to an arc-shaped plate 522. A second motor 53 is installed at one end of the fixator 5 away from the other fixator 5. The output end of the second motor 53 extends into the rotating groove 51 and is fixed to a long gear 512. An external gear ring 54 is fixed at the other end of the fixator 5. The external gear ring 54 is connected to the cleaning structure 6 located between the two fixing plates 3.

[0033] Wherein, a spring groove 5221 is formed in the middle of the end of the arc-shaped plate 522 away from the rack 521. Two reset springs 5223 are symmetrically and fixedly arranged on both sides of the top inside the spring groove 5221. The lower ends of the two reset springs 5223 are respectively fixed to two adjusting blocks 5222. A roller 5224 is rotatably installed between the two adjusting blocks 5222.

[0034] It should be noted that when the boiler pipe is placed between the two fixators 5, the motor two 53 inside the fixator 5 starts, driving the long gear 512 connected thereto to rotate. The long gear 512 forms a planetary gear drive with the other equally-angularly distributed long gears 512 through the internal gear ring 511, and all the long gears 512 synchronously drive the corresponding racks 521 to extend along the chute 52.

[0035] The arc-shaped plate 522 at the end of the rack 521 and the adjusting block 5222 form an elastic support structure through the return spring 5223 in the spring groove 5221, enabling the roller 5224 to generate an adaptive deformation when contacting the surface of the pipe.

[0036] When all the arc-shaped plates 522 complete the annular envelope of the pipe, the external gear ring 54 rotates synchronously with the fixator 5, transmitting the torque to the cleaning structure 6, and the cleaning structure 6 cleans the outer wall of the pipe.

[0037] Embodiment 3

[0038] In an alternative embodiment, as Figures 5 to 6 shown, the cleaning structure 6 includes a cleaning unit 61, a purging unit 62, and a motor three 63. The motor three 63 is installed on one of the fixing plates 3, and the output end of the motor three 63 is fixedly connected to the cleaning unit 61 on the fixing plate 3 where it is located.

[0039] Specifically, the cleaning unit 61 includes two first gears 611 respectively installed at the opposite ends of the two fixing plates 3. One of the first gears 611 is fixed to the output end of the motor three 63. Each first gear 611 meshes with the external gear ring 54 on its side. The external gear ring 54 is connected to the purging unit 62. A rotating rod 612 is fixed between the two first gears 611. A cleaning roller 613 is fixed to the outer wall of the rotating rod 612. A plurality of bristles 614 are fixed to the outer wall of the cleaning roller 613, and the plurality of bristles 614 contact the outer surface of the boiler pipe.

[0040] Among them, the bristles 614 are made of nylon material.

[0041] Specifically, the purging unit 62 includes two second gears 621 respectively installed on the two fixing plates 3. Each second gear 621 meshes with the external gear ring 54 on its side. A reciprocating screw 622 is fixed between the two second gears 621. The reciprocating screw 622 is threadedly connected to the purging block 7. A guide rod 623 is fixed between the two fixing plates 3. The guide rod 623 is located above the reciprocating screw 622, and the outer wall of the guide rod 623 slides with the purging block 7.

[0042] Among them, a nozzle 72 is installed on the purging block 7, the nozzle position of the nozzle 72 faces the outer wall of the boiler pipeline, and the nozzle 72 is connected to an external air jet device through an air pipe 71.

[0043] It should be noted that the motor three 63 drives the rotation of the gear one 611, drives the overall rotation of the fixator 5 through the external gear ring 54, thereby driving the pipeline to rotate. The meshing transmission of the gear two 621 and the external gear ring 54 drives the rotation of the reciprocating screw 622, so that the purging block 7 makes a reciprocating linear motion along the guide rod 623. The external air source supplies air to the nozzle 72 through the air pipe 71 to form a high-pressure air flow beam, and this air flow beam continuously impacts the surface of the pipeline during the movement of the purging block.

[0044] Meanwhile, the rotating rod 612 fixed between the two gears one 611 rotates synchronously, and the cleaning roller 613 on its outer wall carries nylon bristles 614 to rotate and clean the surface of the pipeline, forming a "flushing - sweeping" composite cleaning mode with the nozzle 72 to effectively remove stubborn attachments.

[0045] Embodiment 4

[0046] In an alternative embodiment, as Figure 7 shown, the moving structure 4 includes a motor one 401 installed at one end of the base 1 and a screw one 402 rotatably installed inside the moving groove 11. The output end of the motor one 401 extends into the moving groove 11 and is fixedly connected to the screw one 402. A moving block 21 slides inside the moving groove 11. The moving block 21 is fixed to the middle of the lower end of the moving seat 2, and the moving block 21 is threadedly connected to the screw one 402.

[0047] It should be noted that the motor one 401 in the base 1 drives the rotation of the screw one 402, drives the moving block 21 to translate along the moving groove 11 through the transmission of the screw one 402, and the moving seat 2 and the upper fixing plate 3, fixator 5, and cleaning structure 6 on it move synchronously to achieve precise control of the axial position of the pipeline.

[0048] The above embodiment discloses a positioning device for a boiler pipeline. Among them, first, the boiler pipeline to be processed is horizontally placed in the annular space formed by the two fixators 5; start the motor two 53 at the end of the fixator 5 to drive the rotation of the end long gear 512, and drive all the long gears 512 to rotate synchronously through the internal gear ring 511 planetary transmission mechanism; each long gear 512 drives the corresponding rack 521 to extend out along the sliding groove 52, and pushes the arc plate 522 to move towards the axis direction of the pipeline; when the roller 5224 contacts the surface of the pipeline, the return spring 5223 is compressed to generate elastic deformation, so that the three arc plates 522 form an adaptive envelope to complete the rigid positioning and flexible clamping of the pipeline.

[0049] The starting motor three 63 drives the rotation of the gear one 611, drives the overall rotation of the fixture 5 through the external tooth ring 54, and further drives the fixed pipeline to rotate around a fixed axis; the meshing transmission between the gear two 621 and the external tooth ring 54 makes the reciprocating screw 622 rotate, driving the purging block 7 to perform a reciprocating linear motion along the guide rod 623; the external air source transports high-pressure gas to the nozzle 72 through the air pipe 71, forming an air flow beam that continuously impacts the surface of the pipeline, and at the same time, the cleaning roller 613 carries the nylon brush bristles 614 to rotate and clean the surface of the pipeline.

[0050] Every time the pipeline rotates one week, the purging block 7 completes one reciprocating stroke, realizing the full coverage cleaning of the 360° annular area; the nylon brush bristles 614 and the high-pressure air flow form a composite cleaning mode of "mechanical scraping + air flow impact", effectively removing attachments of different properties such as oxide scales and welding slag.

[0051] When it is necessary to change the axial position of the pipeline, start the motor one 401 at the end of the base 1 to drive the screw one 402 to rotate; the moving block 21 connected by threads drives the moving seat 2 to move along the moving groove 11. During the moving process, the fixture 5 and the cleaning structure 6 move synchronously with the pipeline to ensure the continuity of the cleaning operation.

[0052] As mentioned above, it is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art in the technical field disclosed by this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A positioning device for boiler pipes, characterized in that, It includes a base (1), a moving seat (2) is arranged at the upper end of the base (1), and a moving groove (11) is opened in the middle of the upper end of the base (1). A moving structure (4) for adjusting the position of the moving seat (2) is arranged inside the moving groove (11). Two fixing plates (3) are symmetrically fixed on both sides of the upper end of the moving seat (2). A fixator (5) for positioning and fixing the boiler pipeline is rotatably installed on each fixing plate (3). A cleaning structure (6) for cleaning the boiler pipeline is arranged between the two fixing plates (3).

2. The positioning device for a boiler pipeline according to claim 1, wherein, A rotating groove (51) is opened inside the fixator (5). An internal gear ring (511) is rotatably arranged on the inner wall of the rotating groove (51). A number of long gears (512) are rotatably installed at equal angles inside the rotating groove (51). All the long gears (512) are engaged with the internal gear ring (511). The fixator (5) is provided with a number of sliding grooves (52) at equal angles. A rack (521) is slidably arranged in each sliding groove (52). Each long gear (512) is engaged with a rack (521). One end of each rack (521) extends to the inner circle of the fixator (5) and is fixedly connected to an arc-shaped plate (522). A second motor (53) is installed at one end of the fixator (5) away from the other fixator (5). The output end of the second motor (53) extends into the rotating groove (51) and is fixed to a long gear (512). An external gear ring (54) is fixed at the other end of the fixator (5). The external gear ring (54) is connected to the cleaning structure (6) located between the two fixing plates (3).

3. The positioning device for a boiler pipeline according to claim 2, characterized in that, A spring groove (5221) is opened in the middle of the end of the arc-shaped plate (522) away from the rack (521). Two reset springs (5223) are symmetrically fixed on both sides of the inner top of the spring groove (5221). The lower ends of the two reset springs (5223) are respectively fixed to two adjusting blocks (5222). A roller (5224) is rotatably installed between the two adjusting blocks (5222).

4. A positioning device for a boiler pipeline according to any one of claim 2, characterized in that, The cleaning structure (6) includes a cleaning unit (61), a purging unit (62) and a third motor (63). The third motor (63) is installed on one of the fixing plates (3). The output end of the third motor (63) is fixedly connected to the cleaning unit (61) on the fixing plate (3) where it is located.

5. The positioning device for a boiler pipeline according to claim 4, characterized in that, The cleaning unit (61) includes two first gears (611) respectively installed at the opposite ends of the two fixing plates (3). One of the first gears (611) is fixed to the output end of the third motor (63). Each first gear (611) is engaged with the external gear ring (54) on its side. The external gear ring (54) is connected to the purging unit (62). A rotating rod (612) is fixed between the two first gears (611). A cleaning roller (613) is fixed on the outer wall of the rotating rod (612). A number of bristles (614) are fixed on the outer wall of the cleaning roller (613). All the bristles (614) are in contact with the outer surface of the boiler pipeline.

6. The positioning device for a boiler pipeline according to claim 5, characterized in that, The bristles (614) are made of nylon material.

7. The positioning device for a boiler pipeline according to claim 5, characterized in that, The purging unit (62) includes two second gears (621) respectively installed on two fixing plates (3). Each second gear (621) meshes with an external tooth ring (54) on one side thereof. A reciprocating screw rod (622) is fixed between the two second gears (621). The reciprocating screw rod (622) is threadedly connected to a purging block (7). A guide rod (623) is fixed between the two fixing plates (3). The guide rod (623) is located above the reciprocating screw rod (622). The outer wall of the guide rod (623) slides with the purging block (7).

8. The positioning device for a boiler pipeline according to claim 7, characterized in that, A spray head (72) is installed on the purging block (7). The nozzle position of the spray head (72) faces the outer wall of the boiler pipeline. The spray head (72) is connected to an external air jet device through an air pipe (71).

9. The positioning device for a boiler pipeline according to claim 1, characterized in that, The moving structure (4) includes a first motor (401) installed at one end of the base (1) and a first screw rod (402) rotatably installed inside the moving groove (11). The output end of the first motor (401) extends into the moving groove (11) and is fixedly connected to the first screw rod (402). A moving block (21) slides inside the moving groove (11). The moving block (21) is fixed to the middle of the lower end of the moving seat (2), and the moving block (21) is threadedly connected to the first screw rod (402).

Images