Pipeline hot melting butt joint process and hot melting butt joint equipment

Abstract

The invention belongs to the technical field of pipeline butt joint, and particularly relates to a pipeline hot melting butt joint process and hot melting butt joint equipment, the pipeline hot melting butt joint process comprises a supporting mechanism, a pipeline, an internal supporting block, an external limiting ring, a heating part and a cooling part, the supporting mechanism comprises a base, a double-end lead screw, a sliding rail, a pipeline support, a supporting ring and a knob bolt, and the double-end lead screw is arranged in the middle of the base; sliding rails are arranged on the two sides of the base, pipeline supports are arranged at the two ends of the double-end lead screw, supporting rings are arranged at the top ends of the pipeline supports, and knob bolts are arranged on the side edges of the supporting rings. During butt joint, the inner wall of the pipeline is supported through the supporting blocks, inward collapse of the pipeline is avoided, the outer side of the pipeline is supported through the limiting rings, outward excessive expansion is avoided, the stable shape of the formed pipeline is guaranteed, the butt joint position is cooled through the cooling component after butt joint, the pipeline is rapidly formed, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe butt jointing, in particular to a pipe hot-melt butt jointing process and hot-melt butt jointing equipment. Background Art

[0002] A pipeline is a device connected by pipes, fittings, and valves for transporting gases, liquids, or fluids containing solid particles. Typically, fluids are pressurized by blowers, compressors, pumps, and boilers, flowing from high-pressure areas to low-pressure areas within the pipeline. Alternatively, the fluid's own pressure or gravity can be used for transport. Pipelines have a wide range of uses, primarily in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering, and various industrial installations.

[0003] When laying pipelines, due to the limited length of a pipeline, it is necessary to perform hot-melt butt welding on the pipelines when laying long pipelines. Currently, when hot-melt butt welding is performed on the pipelines, the ends are directly hot-melt butt welded. The pipeline ends are smooth and flat and cannot bite each other, resulting in poor stability after welding. Therefore, a pipeline hot-melt butt welding process and hot-melt butt welding equipment are proposed. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid blurring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] In view of the above problems and / or the problems existing in the existing pipe hot-melt butt welding, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a pipe hot-melt butt welding process and hot-melt butt welding equipment, in which the pipe ends are cut into concave grooves to expand the contact surface and improve the connection stability after butt welding. During butt welding, the inner wall of the pipe is supported by a support block to prevent the pipe from collapsing inward, and the outer side is supported by a limit ring to prevent excessive outward expansion, thereby ensuring the stability of the shape of the pipe after forming. After butt welding, the butt welding point is cooled by a cooling component to enable the pipe to be quickly formed and improve work efficiency.

[0007] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions: A pipe hot-melt butt welding device comprising: The support mechanism includes a base, a double-headed screw, a slide rail, a pipe bracket, a support ring and a knob bolt. The double-headed screw is provided in the middle of the base, slide rails are provided on both sides of the base, pipe brackets are provided at both ends of the double-headed screw, support rings are provided at the top of the pipe brackets, and knob bolts are provided on the sides of the support rings; Pipes are inserted into the support rings on both sides, and adjacent ends of the pipes are provided with mutually matching concave grooves; An internal support block is arranged inside the pipe on one side; An external limiting ring, arranged outside the pipe on one side; A heating component is arranged on the slide rail on one side; The cooling component is arranged on the slide rail on the other side.

[0008] As a preferred solution of the pipe hot-melt butt-jointing equipment described in the present invention, the heating component includes a first sliding bracket and a heating ring, the first sliding bracket is slidably connected to the slide rail, and the heating ring is arranged on the top of the first sliding bracket.

[0009] As a preferred solution of the pipe hot-melt butt-jointing equipment described in the present invention, the cooling component includes a second sliding bracket and a blowing component, the second sliding bracket is slidably connected to the slide rail, and the blowing component is arranged on the top of the second sliding bracket.

[0010] As a preferred solution of the pipe hot-melt butt-melting equipment described in the present invention, the heating ring adopts a ring-mounted electric heating rod, and the heating ring is coaxially arranged with the pipe.

[0011] As a preferred solution of the pipe hot-melt butt-melting equipment described in the present invention, the blowing component is a fan or an air cooler.

[0012] A pipe hot-melt butt welding process corresponding to the pipe hot-melt butt welding equipment according to any one of the above items comprises the following steps: Step 1: Pre-process the pipe connection ends and cut both pipe ends into concave grooves to expand the contact surface; Step 2: Set up the pipe end support, set a support block inside a pipe end and set a limit ring outside; Step 3: Pipe docking: push the pipes on both sides so that the ends of the pipes on both sides touch each other and apply pressure; Step 4: Hot melt welding: Heat the pipe end connection to melt it, maintain pressure, and weld the pipes together. Support the inner wall with support blocks to prevent the pipe from collapsing inward, and support the outer wall with limit rings to prevent excessive expansion outward. Step 5: Cooling and forming, remove the heat, and blow air to the pipe end connection to quickly cool and form.

[0013] As a preferred solution of the pipe hot-melt butt welding process described in the present invention, in the step 1, the concave groove is serrated or wavy, and when the pipe ends on both sides contact, the concave grooves match each other.

[0014] As a preferred solution of the pipe hot-melt butt welding process described in the present invention, in step 2, the inner support block is located at one end of the joint and is suspended inside the pipe, and an expansion gap is left between the outer limit ring and the joint.

[0015] As a preferred solution of the pipeline hot-melt butt-melting process described in the present invention, in the step three, pressure is applied by manual control to keep the pipelines on both sides stably connected.

[0016] As a preferred solution of the pipe hot-melt butt welding process described in the present invention, in the step five, during the blowing process, the pipe is rotated so that the circumference of the pipe is cooled by blowing, so that the pipe is heated evenly.

[0017] Compared with the existing technology: the pipe ends of the present invention are all cut into concave grooves to expand the contact surface and improve the connection stability after docking. During docking, the inner wall of the pipe is supported by the support block to prevent the pipe from collapsing inward, and the outer side is supported by the limit ring to prevent excessive outward expansion, thereby ensuring the stability of the shape of the pipe after forming. After docking, the docking point is cooled by the cooling component to quickly form the pipe and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them: Figure 1 This is a schematic diagram of the shaft side structure of the present invention; Figure 2 This is a schematic diagram of the support mechanism structure of the present invention; Figure 3 This is a schematic diagram of the pipeline structure of the present invention; Figure 4 This is a schematic diagram of the structure of the internal support block and the external limit ring of the present invention; Figure 5 This is a schematic structural diagram of the heating component of the present invention; Figure 6 It is a schematic structural diagram of the cooling component of the present invention.

[0019] In the figure: 100 support mechanism, 110 base, 120 double-headed screw, 130 slide rail, 140 pipe bracket, 150 support ring, 160 knob bolt, 200 pipe, 210 concave groove, 300 internal support block, 400 external limit ring, 500 heating component, 510 first sliding bracket, 520 heating ring, 600 cooling component, 610 second sliding bracket, 620 blowing component. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0023] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0024] The present invention provides a pipe hot-melt butt welding process and hot-melt butt welding equipment. The pipe ends are cut into concave grooves to expand the contact surface and improve the connection stability after butt welding. During butt welding, the inner wall of the pipe is supported by a support block to prevent the pipe from collapsing inward, and the outer wall is supported by a limit ring to prevent excessive outward expansion, ensuring the shape stability of the pipe after forming. After butt welding, the butt welding part is cooled by a cooling component to quickly shape the pipe and improve work efficiency. Figures 1-6 , including: a supporting mechanism 100, a pipe 200, an internal supporting block 300, an external limiting ring 400, a heating component 500 and a cooling component 600.

[0025] The support mechanism 100 includes a base 110, a double-ended screw 120, a slide rail 130, a pipe bracket 140, a support ring 150, and a knob bolt 160. The double-ended screw 120 is set in the middle of the base 110, and the slide rails 130 are set on both sides of the base 110. The pipe bracket 140 is set at both ends of the double-ended screw 120, and the support ring 150 is set at the top of the pipe bracket 140. The knob bolt 160 is set on the side of the support ring 150. Among them, the base 110 adopts a concave seat, the double-headed screw 120 is horizontally connected to the middle part of the base 110, and an operating handwheel is set at the left end of the double-headed screw 120 for easy manual operation. The bottom of the pipe bracket 140 is slidably connected to the base 110 to prevent the pipe bracket 140 from rotating with the double-headed screw 120. When the double-headed screw 120 rotates, the pipe bracket 140 is driven to open and close under the action of the thread feed.

[0026] The pipe 200 is inserted into the support rings 150 on both sides. Concave grooves 210 that match each other are set at the adjacent ends of the pipe 200. The concave grooves are serrated or wavy. When the ends of the pipes on both sides are in contact, the concave grooves match each other. After the pipe 200 is inserted, the knob bolt 160 is turned to fix the pipe 200 on the inner side of the support ring 150 so that the pipe 200 can move with the support ring 150.

[0027] The internal support block 300 is arranged inside the pipe 200 on one side, wherein the structure of the internal support block 300 is as follows: Figure 4 As shown, a hollow T-shaped cylinder is used, the thick end of which is inserted into the inner cavity of the pipe 200 on one side, and the thin end is located at the end of the pipe 200. After the two pipes are connected, the thin end of the internal support block 300 is located at the joint.

[0028] The external limiting ring 400 is arranged on the outside of the pipe 200 on one side, wherein the external limiting ring 400 adopts a hollow convex round tube, and the thin end is nested in the outer wall of the pipe 200. After the pipe 200 is heated, the external limiting ring 400 is slid so that the thick end is moved to the joint for limiting. When pressure is applied to the joint, the thick end of the external limiting ring 400 is held on the outside of the joint.

[0029] The heating component 500 is arranged on a side slide rail 130. The heating component 500 includes a first sliding bracket 510 and a heating ring 520. The first sliding bracket 510 is slidably connected to the slide rail 130. The heating ring 520 is set on the top of the first sliding bracket 510. The heating ring 520 adopts a ring-mounted electric heating rod. The heating ring 520 is coaxially arranged with the pipeline 200. The heating ring 520 is slid by the first sliding bracket 510 to change the use position of the heating ring 520.

[0030] The cooling component 600 is arranged on the slide rail 130 on the other side. The cooling component 600 includes a second sliding bracket 610 and a blowing component 620. The second sliding bracket 610 is slidably connected to the slide rail 130. The blowing component 620 is set on the top of the second sliding bracket 610. The blowing component 620 adopts a fan or an air cooler. The blowing position is changed by sliding the blowing component 620 through the second sliding bracket 610.

[0031] A pipe hot-melt butt welding process includes the following steps: Step 1: Pre-process the pipe connection ends and cut both pipe ends into concave grooves to expand the contact surface so that the pipe chain structures on both sides can hold each other and fit tightly together to ensure the tightness after forming. The concave grooves are serrated or wavy. When the pipe ends on both sides are in contact, the concave grooves fit together.

[0032] Step 2: Set up pipe end supports. Set a support block inside a pipe end and a limit ring outside. When the pipes are connected, heating will soften the pipes, and when pressure is applied, the softened pipes will deform, causing wrinkles on the inner and outer walls of the pipes. Therefore, support blocks and limit rings are set. The inner support block is located at one end of the joint and hangs inside the pipe. An expansion gap is left between the outer limit ring and the joint to provide deformation space for welding while avoiding large deformation that causes wrinkles and deformation of the pipes.

[0033] Step 3: Pipe docking, push the pipes on both sides so that the pipe ends on both sides touch each other, and apply pressure. Apply pressure through manual control to keep the pipes on both sides stably connected, which is convenient for personnel to control and adjust.

[0034] Step 4: Hot melt welding: Heat the pipe end connection to melt it, maintain pressure, and weld the pipes together. Support the inner wall with support blocks to prevent the pipe from collapsing inward, and support the outer wall with limit rings to prevent excessive expansion outward. Step 5: Cooling and forming, remove the heating, and blow air to the pipe end connection for rapid cooling and forming. In step 5, during the blowing process, rotate the pipe so that the circumference of the pipe is cooled by blowing air so that the pipe is heated evenly.

[0035] During specific use, the pipe 200 is inserted into the support rings 150 on both sides in an inserting manner, and the concave groove 210 is located at one adjacent end for easy docking. Then, the knob bolt 160 is turned to fix the pipe 200 on the inner side of the support ring 150 so that the pipe 200 can move with the support ring 150. The internal support block 300 and the external limit ring 400 are respectively installed at the docking end of the pipe 200 on one side. The double-headed screw 120 is turned to drive the pipe bracket 140 to move under the action of thread feed. The pipes 200 are close to each other so that the concave grooves 210 are matched with each other. After matching, the thin end of the internal support block 300 is located inside the joint. On the other side, the heating ring 520 is slid through the first sliding bracket 510 to change the use position of the heating ring 520, and the heating ring 520 is started to heat the joint to melt the joint of the pipe 200. After the hot melting, the external limiting ring 400 is slid so that the thick end of the external limiting ring 400 is held outside the joint. Then, the double-headed screw 120 is continuously rotated to squeeze the pipes 200 on both sides against each other, and pressure is applied to the joint to ensure a stable connection of the pipes 200. When pressure is applied, the thick end of the external limiting ring 400 is held outside the joint, and the thin end of the internal support block 300 supports the inner side of the shaft joint to prevent excessive deformation of the pipe from causing wrinkles. After hot-melt butt welding, remove the heating ring 520, remove the external limit ring 400 from the gap, then loosen the knob bolt 160, move the blowing component 620 to the joint and start blowing air to cool the joint. During cooling, since the knob bolt 160 has been loosened, the pipe 200 can be rotated to blow air around the pipe 200 for rapid cooling.

[0036] Although the present invention has been described above with reference to embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as there are no structural conflicts, the various features of the embodiments disclosed herein may be combined with each other in any manner, and the omission of an exhaustive description of such combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pipe hot-melt butt welding device, characterized in that: include: A support mechanism (100) comprises a base (110), a double-headed screw (120), a slide rail (130), a pipe support (140), a support ring (150) and a knob bolt (160), wherein the double-headed screw (120) is provided in the middle of the base (110), slide rails (130) are provided on both sides of the base (110), pipe supports (140) are provided at both ends of the double-headed screw (120), support rings (150) are provided at the top of the pipe support (140), and knob bolts (160) are provided on the sides of the support ring (150); The pipe (200) is inserted into the support rings (150) on both sides, and adjacent ends of the pipe (200) are provided with mutually matching concave grooves (210); An internal support block (300) is arranged inside the pipe (200) on one side; An external limiting ring (400) is arranged outside the pipe (200) on one side; A heating component (500) is provided on the slide rail (130) on one side; The cooling component (600) is arranged on the slide rail (130) on the other side.

2. The pipe hot-melt butt welding equipment according to claim 1, characterized in that: The heating component (500) comprises a first sliding bracket (510) and a heating ring (520), wherein the first sliding bracket (510) is slidably connected to the slide rail (130), and the heating ring (520) is arranged on the top of the first sliding bracket (510).

3. The pipe hot-melt butt welding equipment according to claim 1, characterized in that: The cooling component (600) comprises a second sliding bracket (610) and a blowing component (620), wherein the second sliding bracket (610) is slidably connected to the slide rail (130), and the blowing component (620) is arranged on the top of the second sliding bracket (610).

4. The pipe hot-melt butt welding equipment according to claim 2, characterized in that: The heating ring (520) adopts a ring-mounted electric heating rod, and the heating ring (520) is coaxially arranged with the pipeline (200).

5. The pipe hot-melt butt welding equipment according to claim 3, characterized in that: The blowing component (620) is a fan or a cooling air blower.

6. A butt-welding process for pipe butt-welding equipment according to any one of claims 1 to 5, characterized in that: Step 1: Pre-process the pipe connection ends and cut both pipe ends into concave grooves to expand the contact surface; Step 2: Set up the pipe end support, set a support block inside a pipe end and set a limit ring outside; Step 3: Pipe docking: push the pipes on both sides so that the ends of the pipes on both sides touch each other and apply pressure; Step 4: Hot melt welding: Heat the pipe end connection to melt it, maintain pressure, and weld the pipes together. Support the inner wall with support blocks to prevent the pipe from collapsing inward, and support the outer wall with limit rings to prevent excessive expansion outward. Step 5: Cooling and forming, remove the heat, and blow air to the pipe end connection to quickly cool and form.

7. A pipe butt fusion process according to claim 6, characterized in that: In the step 1, the concave groove is serrated or wavy, and when the pipe ends on both sides contact, the concave grooves match each other.

8. The pipe butt fusion process according to claim 6, characterized in that: In the second step, the inner support block is located at one end of the joint and is suspended inside the pipe, and an expansion gap is left between the outer limit ring and the joint.

9. The pipe butt fusion process according to claim 6, characterized in that: In step three, pressure is applied by manual control to keep the pipes on both sides stably connected.

10. The pipe butt fusion process according to claim 6, characterized in that: In the step 5, during the blowing process, the pipe is rotated so that the circumference of the pipe is cooled by blowing air, so that the pipe is heated evenly.

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