Pipeline butt welding device for sewage treatment plant construction

Abstract

The invention relates to the technical field of welding equipment, in particular to a sewage treatment plant construction pipeline butt welding device which comprises a butt ring located between two pipelines, a circular ring arranged on the outer side of the butt ring in a sleeving mode and a coil arranged in the circular ring and used for heating the butt ring. The butt joint ring is provided with a plurality of long holes used for being filled with welding flux. The butt-joint ring and the welding flux filled on the butt-joint ring are used for performing butt-joint welding on the two pipelines, so that the whole end surfaces of the pipelines can be heated and melted, the deep-layer positions and the surface-layer positions of the end parts of the two pipelines can be connected, the welding firmness and integrity are improved, and the welding quality is further improved; meanwhile, by means of the welding flux on the butt joint ring and the induction heating mode, the end of the pipeline can be evenly heated, and therefore the situation that stress is generated at the butt joint position, and welding quality is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, in particular to a pipe butt welding device for sewage treatment plant construction. Background Art

[0002] Sewage treatment facilities are indispensable infrastructure in modern cities and industrial areas, shouldering the heavy responsibility of protecting the water environment and maintaining public health and safety. During the construction and maintenance of sewage treatment plants, large and complex pipe networks are their core components. These pipe networks undertake the key tasks of sewage collection, transportation, treatment, and discharge, and are usually composed of a large number of pipes made of different materials (such as carbon steel, stainless steel, HDPE, etc.) and of different diameters connected by welding.

[0003] The quality of pipeline welding directly determines the sealing, structural strength and long-term operational reliability of the pipeline system. Any welding defects may lead to leakage and rupture, which will not only cause sewage leakage to pollute the environment, but also affect the efficiency of the treatment process, increase maintenance costs, and may even cause safety accidents.

[0004] The traditional welding method is to directly connect two pipes together, and then directly weld the pipe joint position with a welding rod. However, this welding method can only achieve melting and connection of the surface area of ​​the pipe joint position. For deep areas, effective welding cannot be performed, resulting in poor welding strength and sealing. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a pipe butt welding device for sewage treatment plant construction, the specific technical solution adopted by the present invention is: The present invention provides a pipe butt welding device for sewage treatment plant construction, comprising a butt ring located between two pipes, a circular ring sleeved on the outside of the butt ring, and a coil arranged inside the circular ring and used to heat the butt ring. The butt ring is provided with a plurality of long holes for filling flux.

[0006] Furthermore, a gasket is sleeved inside the butt-jointing ring, and the gasket is used to prevent the molten butt-jointing ring and flux from flowing into the inside of the pipeline, and both end surfaces of the gasket extend into the inside of the two pipelines respectively.

[0007] Furthermore, the gasket includes two split rings distributed on the left and right, and a number of protrusions are provided on the opposite end faces of the two split rings. The protrusions on one split ring are used in conjunction with the gaps between two adjacent protrusions on the other split ring. A number of side stops are provided on the outer wall of each split ring, and a number of grooves are provided on both end faces of the docking ring for use in conjunction with the side stops.

[0008] Furthermore, the circular ring is composed of two arc-shaped bodies that can be connected to or separated from each other, and each arc-shaped body is provided with a wire segment. When the arc-shaped bodies are connected to each other, the wire segments form the coil.

[0009] Furthermore, there are several coils inside the ring.

[0010] Furthermore, one end of each of the arc-shaped bodies is provided with a slide groove, and the contact end of the coil is located in the slide groove; A conductor is slidably arranged in the slide groove, and the conductor is used to contact and electrically connect with the contact ends. When the conductor contacts at least two contact ends, several coils are connected in parallel.

[0011] Furthermore, the welding device also includes a power unit, which includes a frame, a support shaft arranged in the frame, two adjusting wheels mounted on the support shaft for relative rotation, and a transmission wheel located between the two adjusting wheels, the transmission wheel is connected to each of the adjusting wheels in a transmission manner, and the two adjusting wheels are connected to the two arc-shaped bodies respectively through two connecting arms.

[0012] Furthermore, the end of the conductor is slidably mounted on the end surface of the adjusting wheel along the radial direction of the adjusting wheel; The support shaft rotates on the frame, and along the axial direction of the support shaft, threaded areas with opposite spiral directions are provided on the outer walls on both sides of the center point of the support shaft. A threaded sleeve is provided on each threaded area, and the threaded sleeve is rotatably connected to the corresponding conductor through an inclined push-pull arm.

[0013] The beneficial effects of the present invention are: By using a butt ring and the flux filled on it to butt-weld two pipes, the entire end face of the pipe can be heated and melted, so that the deep and surface positions of the two pipe ends can be connected, improving the firmness and integrity of the weld, and thus improving the weld quality. At the same time, using the flux on the butt ring and induction heating, the pipe ends can be heated evenly, thereby avoiding stress at the butt position and affecting the weld quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 1 is a schematic structural diagram of a coil in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the pipeline and the docking ring in an embodiment of the present invention; Figure 4 2 is a schematic structural diagram of a docking ring according to an embodiment of the present invention; Figure 5 yes Figure 4 Schematic diagram of the explosion structure; Figure 6 is a schematic structural diagram of an arc-shaped body in an embodiment of the present invention; Figure 7 Schematic diagram of the structure of the power unit in an embodiment of the present invention.

[0016] Reference numerals: 1. Pipeline; 2. Docking ring; 3. Circular ring; 4. Coil; 5. Long hole; 6. Washer; 7. Split ring; 8. Protrusion; 9. Side stop; 10. Groove; 11. Slide; 12. Contact end; 13. Conductor; 14. Frame; 15. Support shaft; 16. Adjusting wheel; 17. Drive wheel; 18. Connecting arm; 19. Threaded area; 20. Threaded sleeve; 21. Push-pull arm. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integrated connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0020] like Figures 1 to 7As shown, the present invention is a pipe butt welding device for sewage treatment plant construction, comprising a butt ring 2 located between two pipes 1, a circular ring 3 sleeved on the outside of the butt ring 2, and a coil 4 disposed inside the circular ring 3 and used to heat the butt ring 2. The butt ring 2 is provided with a plurality of long holes 5 for filling with flux. In the present invention, when two pipes 1 are butt-jointed, a butt-jointing ring 2 is placed between the two pipes 1. The material of the butt-jointing ring 2 is the same as or compatible with that of the pipes 1. Thus, when the butt-jointing ring 2 and the ends of the pipes 1 are melted, the butt-jointing of the two pipes 1 can be achieved with the help of the butt-jointing ring 2. In addition to being used to connect the two pipes 1, the butt-jointing ring 2 can also carry flux through the plurality of long holes 5 opened thereon. In this way, when welding, the flux is used to heat and melt the surface and deep layers of the two pipes 1 and the butt-jointing ring 2. The circular ring 3 is mainly used to provide an installation position for the coil 4, so as to facilitate supporting and protecting the coil 4. The circular ring 3 can be a shell with a space inside, or the coil 4 can be wrapped by pouring soil, sand, or the like. When in use, the several long holes 5 on the butt-jointing ring 2 are filled with flux, the ends of the two pipes 1 are moved to the inside of the circular ring 3, and the butt-jointing ring 2 is placed between the two pipes 1. The butt-jointing ring 2 and the pipes 1 are coaxial. This coaxial arrangement only requires that the outer wall of the butt-jointing ring 2 is not exposed outside the pipes 1. The two pipes 1 squeeze and clamp the butt-jointing ring 2; alternating current is passed through the coil 4 in the circular ring 3, and the coil 4 performs induction heating on the butt-jointing ring 2 and the ends of the pipes 1. The flux in the long holes 5 melts and simultaneously heats the butt-jointing ring 2 and the ends of the pipes 1, thereby softening and fusing the end faces of the butt-jointing ring 2 and the pipes 1, thereby achieving a working mode in which the two pipes 1 are butt-welded through the butt-jointing ring 2; By using the butt-welding ring 2 and the flux filled thereon to butt-weld the two pipes 1, the entire end surface of the pipe 1 can be heated and melted, so that the deep and surface positions of the ends of the two pipes 1 can be connected, improving the firmness and integrity of the weld, thereby improving the weld quality. At the same time, the flux on the butt-welding ring 2 and the induction heating method can make the ends of the pipe 1 evenly heated, thereby avoiding stress at the butt joint position and affecting the weld quality. It should be pointed out that in order to improve the tightness of the connection, when welding the ends of the two pipelines 1, relative auxiliary thrust can be provided to the two pipelines 1 through structures such as oil cylinders and pushing units, so that the molten positions of the ends of the two pipelines 1 are squeezed against each other, thereby improving the tightness of the welding.

[0021] When welding the pipes 1 together, in order to prevent the molten metal and flux from dripping into the pipes 1, it is necessary to block the inner side of the joint between the two pipes 1. Figure 4In the manner shown, a gasket 6 is sleeved inside the docking ring 2, and the gasket 6 is used to prevent the molten docking ring 2 and flux from flowing into the interior of the pipeline 1, and the two end faces of the gasket 6 extend into the interior of the two pipelines 1 respectively; the gasket 6 can be used to support the docking ring 2 and to block the flux in the long hole 5; since the two ends of the gasket 6 extend into the two pipelines 1 respectively, the gasket 6 can be used to dock and position the two pipelines 1, thereby improving the accuracy of the docking of the two pipelines 1; when the docking ring 2 is heated and melted, the gasket 6 can block the molten docking ring 2 and the end of the pipeline 1; the setting of the gasket 6 can also keep the inner wall of the docking position of the two pipelines 1 flat; it should be pointed out that the melting point of the gasket 6 can be higher than that of the docking ring 2, thereby preventing the gasket 6 from being melted by the heat.

[0022] Furthermore, the gasket 6 includes two split rings 7 distributed on the left and right, and a plurality of protrusions 8 are provided on the opposite end faces of the two split rings 7. The protrusions 8 on one split ring 7 cooperate with the gaps between two adjacent protrusions 8 on the other split ring 7. A plurality of side stops 9 are provided on the outer wall of each split ring 7, and a plurality of grooves 10 for cooperating with the side stops 9 are opened on both end faces of the docking ring 2. In the present invention, when the docking ring 2 is mounted on the gasket 6, if the docking ring 2 is not effectively restricted, the docking ring 2 can move freely on the gasket 6, and the lengths of the two ends of the gasket 6 extending into the two pipes 1 are likely to be different, and displacement is likely to occur during welding, affecting the welding quality. Therefore, it is necessary to use several side stops 9 and several grooves 10 on both sides of the docking ring 2 to position the docking ring 2; the method of combining the two split rings 7 with the gasket 6 is mainly to facilitate the installation of the docking ring 2 between the several side stops 9 on the two split rings 7, and the several protrusions 8 on the two split rings 7 and the gaps between adjacent two protrusions 8 are mainly used to improve the docking firmness of the two split rings 7.

[0023] Furthermore, the ring 3 is composed of two arc-shaped bodies that can be connected or separated from each other, and each arc-shaped body is provided with a wire segment. When the arc-shaped bodies are connected, each wire segment forms a coil 4; After the two pipes 1 are welded, it is inconvenient to remove the pipe 1 from the ring 3 because the pipe 1 is long. To facilitate the removal of the pipe 1 from the ring 3, the above-mentioned split structure can be adopted, that is, the two arc-shaped bodies can be separated from each other, so that the pipe 1 can be directly removed from between the two arc-shaped bodies. When welding is required, it is only necessary to connect the two arc-shaped bodies so that the several wire segments inside can be re-formed into a coil 4.

[0024] Furthermore, if Figure 2 As shown, there are several coils 4 inside the ring 3; by setting up several coils 4, the heat generation can be increased, thereby improving the heating and welding efficiency; the several coils 4 can be connected to the power supply in series or in parallel.

[0025] On the basis of the above implementation, one end of each arc-shaped body is provided with a slide groove 11, and the slide groove 11 has a contact end 12 of the coil 4; A conductor 13 is slidably disposed in the chute 11. The conductor 13 is used to contact and electrically connect with the contact end 12. When the conductor 13 contacts at least two contact ends 12, the coils 4 are connected in parallel. Since there are several coils 4 inside the ring 3, there are several contact terminals 12 at the ends of the arc-shaped body. The two contact terminals 12 at both ends of the coil 4 are respectively located in the slide grooves 11 of the two arc-shaped bodies. In this way, when different contact terminals 12 are energized, different coils 4 can be connected to the circuit; The conductor 13 is mainly used to energize each coil 4. When the conductor 13 slides in the slide groove 11, the conductor 13 can contact and electrically connect with different numbers of contact ends 12. At this time, the external power supply can energize the corresponding coil 4 through the conductor 13, and this part of the coils 4 is in a parallel connection state.

[0026] Furthermore, the welding device also includes a power unit, which includes a frame 14, a support shaft 15 disposed in the frame 14, two adjusting wheels 16 mounted on the support shaft 15 for relative rotation, and a transmission wheel 17 located between the two adjusting wheels 16, the transmission wheel 17 is in transmission connection with each adjusting wheel 16, and the two adjusting wheels 16 are connected to the two arc-shaped bodies respectively through two connecting arms 18; The frame 14 is mainly used to provide an installation position for the support shaft 15, the adjusting wheel 16, the transmission wheel 17 and the connecting arm 18. When the transmission wheel 17 rotates, it can drive the two adjusting wheels 16 to rotate synchronously in opposite directions. The two adjusting wheels 16 respectively drive the two arc-shaped bodies to rotate synchronously in opposite directions through the two connecting arms 18, thereby enabling the two arc-shaped bodies to separate from each other in a scissor-like manner, thereby forming a larger opening on one side of the ring 3 to facilitate the entry and exit of the pipeline 1. The rotational power of the transmission wheel 17 can be provided by a motor.

[0027] Furthermore, the end of the conductor 13 is slidably mounted on the end surface of the adjusting wheel 16 along the radial direction of the adjusting wheel 16; The support shaft 15 rotates on the frame 14. Along the axis of the support shaft 15, the outer walls on both sides of the center point of the support shaft 15 are provided with threaded areas 19 with opposite spiral directions. Each threaded area 19 is provided with a threaded sleeve 20. The threaded sleeve 20 is rotatably connected to the corresponding conductor 13 through an inclined push-pull arm 21. Since the conductor 13 needs to be able to slide in the slide groove 11 and the arc-shaped body needs to be tilted, the conductor 13 needs to be installed on the adjustment wheel 16 and be able to move in a specific direction; when the position of the conductor 13 needs to be adjusted, the support shaft 15 can be rotated so that the support shaft 15 uses the two threaded areas 19 in opposite directions on the support shaft 15 to push the two threaded sleeves 20 to move relative to each other, and the two threaded sleeves 20 can use the two push-pull arms 21 to push the two conductors 13 to slide on the two adjustment wheels 16, thereby adjusting the position of the conductor 13; the above structural method has the following advantages: In addition to being able to adjust the position of the conductor 13 when the two arc-shaped bodies are in the docking state, the position of the conductor 13 in the slide groove 11 can also be adjusted when the two arc-shaped bodies are separated, which only requires rotating the support shaft 15; when the support shaft 15 is stationary, if the transmission wheel 17 rotates, the adjusting wheel 16 will drive the threaded sleeve 20 to rotate on the corresponding threaded area 19 through the conductor 13. At this time, the threaded sleeve 20 will move a small distance along the axial direction of the support shaft 15. This small distance will not affect the number of connections between the conductor 13 and the plurality of contact ends 12.

[0028] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pipe butt welding device for sewage treatment plant construction, characterized in that: The invention comprises a butt joint ring located between two pipelines, a circular ring sleeved on the outside of the butt joint ring and a coil arranged inside the circular ring and used for heating the butt joint ring. The butt joint ring is provided with a plurality of long holes for filling flux.

2. A pipe butt welding device for sewage treatment plant construction according to claim 1, characterized in that: A gasket is sleeved inside the butt-jointing ring, and the gasket is used to prevent the butt-jointing ring and the flux in a molten state from flowing into the interior of the pipeline. Both end surfaces of the gasket extend into the interior of the two pipelines respectively.

3. A pipe butt welding device for sewage treatment plant construction according to claim 2, characterized in that: The gasket includes two split rings distributed on the left and right, and a number of protrusions are provided on the opposite end faces of the two split rings. The protrusions on one split ring are used in conjunction with the gaps between two adjacent protrusions on the other split ring. A number of side stops are provided on the outer wall of each split ring, and a number of grooves are provided on both end faces of the docking ring for use with the side stops.

4. A pipe butt welding device for sewage treatment plant construction according to claim 3, characterized in that: The circular ring is composed of two arc-shaped bodies that can be connected to or separated from each other, and each arc-shaped body is provided with a wire segment. When the arc-shaped bodies are connected to each other, the wire segments form the coil.

5. A pipe butt welding device for sewage treatment plant construction according to claim 4, characterized in that: There are several coils inside the ring.

6. A pipe butt welding device for sewage treatment plant construction according to claim 5, characterized in that: One end of each of the arc-shaped bodies is provided with a slide groove, and the contact end of the coil is located in the slide groove; A conductor is slidably arranged in the slide groove, and the conductor is used to contact and electrically connect with the contact ends. When the conductor contacts at least two contact ends, several coils are connected in parallel.

7. A pipe butt welding device for sewage treatment plant construction according to claim 6, characterized in that: The welding device also includes a power unit, which includes a frame, a support shaft arranged in the frame, two adjusting wheels mounted on the support shaft for relative rotation, and a transmission wheel located between the two adjusting wheels, the transmission wheel is connected to each of the adjusting wheels in a transmission manner, and the two adjusting wheels are connected to the two arc-shaped bodies respectively through two connecting arms.

8. A pipe butt welding device for sewage treatment plant construction according to claim 7, characterized in that: The end of the conductor is slidably mounted on the end surface of the adjusting wheel along the radial direction of the adjusting wheel; The support shaft rotates on the frame, and along the axial direction of the support shaft, threaded areas with opposite spiral directions are provided on the outer walls on both sides of the center point of the support shaft. A threaded sleeve is provided on each threaded area, and the threaded sleeve is rotatably connected to the corresponding conductor through an inclined push-pull arm.

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