A titanium alloy pipeline welding device

Abstract

The present invention relates to the field of titanium alloy pipeline welding, and specifically to a titanium alloy pipeline welding device, which includes an adjusting unit for adjusting the distance between adjacent two sections of pipelines, and the adjusting unit includes an intermediate body and an adjusting component arranged on the intermediate body; the adjusting component includes two toothed discs, the inner rings of the two toothed discs are rotatably connected to the outer ring of the intermediate body, the outer rings of the two toothed discs are meshed with a gear, the gear is supported on the intermediate body through a support frame, and a plurality of inserting plates are arranged between the two toothed discs. The middle position of one end face of each inserting plate is fixedly connected with a sliding rod, and the sliding rod is slidably connected inside the intermediate body; for this titanium alloy pipeline welding device, the arranged inserting plates can not only control the distance between two sections of titanium alloy pipelines, that is, control the distance between two sections of titanium alloy pipelines in the axial direction, but also the top plates arranged on the inserting plates can restrain the radial offset of the two sections of titanium alloy pipelines, that is, the two sections of titanium alloy pipelines can be made to be on the same axis, ensuring the welding quality of the two sections of titanium alloy pipelines.

Description

Technical Field

[0001] The present invention relates to the field of titanium alloy pipeline welding, and specifically to a titanium alloy pipeline welding device. Background Art

[0002] Titanium alloy pipelines are pipe bodies made of titanium alloy, which have high mechanical properties, excellent stamping properties, and high corrosion resistance. Among them, in terms of corrosion resistance, the corrosion resistance of titanium alloy pipelines in seawater is higher than that of aluminum alloy pipelines, stainless steel pipelines, and nickel-based alloy pipelines. Therefore, they are commonly used in seawater development projects with high corrosion, such as seawater desalination projects, pipeline systems for transporting seawater, and heating pipeline systems.

[0003] In a pipeline system, pipeline connections are generally made through flange mating with a sealing ring, or directly by welding two sections of titanium alloy pipelines; however, when welding two sections of titanium alloy pipelines, not only is it necessary to perform beveling on the welding ends of the pipelines, but also the distance between the welding end faces of the two sections of titanium alloy pipelines needs to be controlled to ensure that the welding is carried out from the outer surface of the titanium alloy pipeline to the inner surface of the pipeline to obtain a complete and well-sealed weld. At present, the welding of titanium alloy pipelines is not perfect enough. When the welding ends of two sections of titanium alloy pipelines are butt-jointed, it is difficult to control the width of the gap, and the distribution of the gap width is not uniform. As Figure 1 shown in the situation, if welded according to this situation, the weld will not meet the welding requirements, and it is difficult to ensure the safety and reliability of the later pipeline system.

[0004] Therefore, a titanium alloy pipeline welding device is proposed for the above problems. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0006] The technical solution adopted by the present invention to solve its technical problems is: A titanium alloy pipeline welding device of the present invention includes an adjustment unit for adjusting the distance between adjacent two sections of pipelines, and the adjustment unit includes an intermediate body in the shape of a cuboid, and an adjustment assembly provided on the intermediate body;

[0007] The adjustment assembly includes two toothed discs, the inner circles of the two toothed discs are rotatably connected to the outer circle of the intermediate body, the outer circles of the two toothed discs are engaged with a gear, the gear is supported on the intermediate body through a support frame, and a plurality of insertion plates are provided between the two toothed discs. At the middle position of one end face of each insertion plate, a sliding rod is fixedly connected, and the sliding rod is slidably connected inside the intermediate body;

[0008] On the outer side wall of each insertion plate, a guide rod is provided, and the ends of the guide rod are respectively opposite to the inner side walls of the two toothed discs;

[0009] On the inner side walls of the two sprocket discs, there are spiral bodies in a vortex shape, and the end of the guide rod is slidably connected to the upper spiral body;

[0010] On the two side walls of each plug board, a plurality of card slots are symmetrically opened. Between two opposite card slots, there is a top plate. The top plate is in a U shape, and the inner side of the top plate is slidably connected in the card slot.

[0011] Preferably, the cross section of each plug board is in an isosceles trapezoid shape.

[0012] Preferably, a plurality of rotating slots are opened on the side wall of each guide rod, and a steel ball is rotatably connected in each rotating slot.

[0013] Preferably, columns are provided at both ends of the intermediate body. A sliding slot is opened on the outer side wall of the column, and a base block is slidably connected in the sliding slot. An electric push rod is provided on the base block. The rod body of the electric push rod is perpendicular to the side wall of the column, and a support plate is fixedly connected to the output end of the electric push rod.

[0014] Preferably, at the middle position of the end of each column, a "cross"-shaped rotating plate is rotatably connected. A screw rod is threadedly connected to each end of the rotating plate, and the end of the screw rod can squeeze the base block in the sliding slot.

[0015] Preferably, a connecting column is provided at the end of the intermediate body. A U-shaped connecting plate is provided at the end of the connecting column. The two plate bodies of the connecting plate are rotatably connected to the outer circle of the connecting column, and the end face of the connecting plate is fixedly connected to the column.

[0016] Preferably, the connecting column is rotatably connected inside the intermediate body.

[0017] Preferably, an annular scale is provided on the end face of the intermediate body, and a pointer is provided on the outer circle of the connecting column.

[0018] Preferably, annular grooves are symmetrically opened on the outer circle of the intermediate body, and the inner circle of the sprocket disc is rotatably connected in the annular groove.

[0019] Preferably, a rubber plate is provided on the outer surface of each support plate.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. In the present invention, in the design of the titanium alloy pipeline welding equipment, the plug board can not only control the distance between two sections of titanium alloy pipelines, that is, control the axial distance between two sections of titanium alloy pipelines, but also the top plate provided on the plug board can restrain the radial offset of the two sections of titanium alloy pipelines, so that the two sections of titanium alloy pipelines are on the same axis, ensuring the welding quality of the two sections of titanium alloy pipelines.

[0022] 2. In the present invention, a U-shaped connecting plate is rotatably connected to the connecting column. The two plates of the connecting plate are fixed to the connecting column by bolts and nuts. After adjusting the angle between the column and the intermediate body, tighten the nuts to fix the relative rotation between the connecting plate and the connecting column. Then, place the two columns into two titanium alloy elbow pipes respectively, and drive the electric push rod so that the supporting plate abuts against the inner surface of the titanium alloy elbow pipe to fix the two titanium alloy elbow pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of uneven widths of the butt gaps between two titanium alloy pipes;

[0024] Figure 2 Schematic diagram of welding two titanium alloy elbow pipes in the present invention;

[0025] Figure 3 Stereogram of the adjusting unit cooperating with one titanium alloy elbow pipe in the present invention;

[0026] Figure 4 Schematic diagram of the adjusting unit cooperating with two titanium alloy elbow pipes in the present invention;

[0027] Figure 5 Schematic diagram of the butt joint of two titanium alloy pipes in the present invention;

[0028] Figure 6 First perspective stereogram of the adjusting unit in the present invention;

[0029] Figure 7 Second perspective stereogram of the adjusting unit in the present invention;

[0030] Figure 8 Schematic diagram of the toothed disc in the present invention;

[0031] Figure 9 Stereogram of the cooperation between the intermediate body and the insertion plate in the present invention;

[0032] Figure 10 Front view of the intermediate body and the insertion plate in the present invention;

[0033] Figure 11 Schematic diagram of the cooperation in the state where the axes of two titanium alloy elbow pipes are skew in the present invention;

[0034] Figure 12 Stereogram of the insertion plate in the present invention;

[0035] Figure 13 Front view of the insertion plate in the present invention;

[0036] Figure 14 Stereogram of the column in the present invention;

[0037] Figure 15Schematic diagram of the cooperation between the base block and the sliding groove in the present invention;

[0038] Figure 16 Three-dimensional view of the cooperation between the electric push rod and the support plate in the present invention.

[0039] In the figure: 101, titanium alloy pipe; 102, bevel; 103, weld; 1, intermediate body; 2, gear disc; 3, gear; 4, insertion plate; 5, sliding rod; 6, guiding rod; 7, spiral body; 8, clamping groove; 9, top plate; 10, support frame; 11, motor; 12, steel ball; 13, column body; 14, sliding groove; 15, base block; 16, electric push rod; 17, support plate; 18, electric jack; 19, electric insertion rod; 20, rotating plate; 21, screw rod; 22, connecting column; 23, connecting plate; 24, setscrew; 25, scale; 26, annular groove; 27, rubber plate. Specific embodiments

[0040] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0041] Refer to Figure 2 - Figure 13 , a titanium alloy pipe welding device, including an adjusting unit for adjusting the distance between two adjacent pipes, and a welding gun for welding two adjacent pipes; the adjusting unit includes a cuboid-shaped intermediate body 1 and an adjusting component arranged on the intermediate body 1; the adjusting component includes two gear discs 2, the inner circles of the two gear discs 2 are rotatably connected to the outer circle of the intermediate body 1, the outer circles of the two gear discs 2 are meshed with a gear 3, the gear 3 is arranged on the intermediate body 1 through a support frame 10, a plurality of insertion plates 4 are arranged between the two gear discs 2, a sliding rod 5 is fixedly connected to the middle position of one end face of each insertion plate 4, and the sliding rod 5 is slidably connected to the inside of the intermediate body 1; a guiding rod 6 is arranged on the outer side wall of each insertion plate 4, and the end parts of the guiding rods 6 are opposite to the inner side walls of the two gear discs 2 respectively; spiral bodies 7 in a scroll shape are arranged on the inner side walls of the two gear discs 2, and the end parts of the guiding rods 6 are slidably connected to the upper spiral bodies 7; a plurality of clamping grooves 8 are symmetrically arranged on the two side walls of each insertion plate 4, a top plate 9 is arranged between the two opposite clamping grooves 8, the top plate 9 is in a U shape, and the inner side of the top plate 9 is slidably connected to the clamping groove 8;

[0042] In this embodiment, two or more support frames 10 can be symmetrically arranged at the center of the intermediate body 1, the end part of the support frame 10 is rotatably connected with a gear 3, the gear 3 is driven by a motor 11, and a plurality of gears 3 rotate synchronously and drive the two gear discs 2 to rotate in the same direction;

[0043] In this embodiment, a wire is connected to the intermediate body 1, and the wire supplies power to the motor 11;

[0044] The specific operation process of the titanium alloy pipe welding device is as follows:

[0045] Installation: First, drive the motor 11. The motor 11 drives the toothed disc 2 to rotate through the gear 3. The toothed disc 2 drives the spiral body 7 with a spiral shape on the inner side wall to rotate. The side wall of the spiral body 7 squeezes the guide rod 6. The guide rod 6 drives the plug board 4 to move outward in the direction of the outside of the intermediate body 1, so that the diameter of the circle formed by the ends of the plug board 4 is greater than the outer diameter of the titanium alloy pipe 101. Then, place the intermediate body 1 between two sections of titanium alloy pipes 101. At this time, the welding end faces of the two sections of titanium alloy pipes 101 are abutted against the plug board 4, and there is a gap between the top plate 9 on the plug board 4 and the titanium alloy pipe 101. After that, drive the motor 11 to rotate, and the plug board 4 continues to move outward in the direction of the outside of the intermediate body 1. The plug board 4 drives the top plate 9 to abut against the inner side wall of the titanium alloy pipe 101. At this time, the axial distance between the two sections of titanium alloy pipes 101 is limited by the thickness of the plug board 4, that is, the width reserved for welding. At the same time, in the radial direction, the two sections of titanium alloy pipes 101 are constrained by the synchronously moving top plate 9, that is, the two sections of titanium alloy pipes 101 are on the same axis;

[0046] Pre-welding: In this embodiment, welding is carried out through the plasma welding technology. The welding gun first performs multi-position spot welding between the two sections of titanium alloy pipes 101. The spot welding can fix the two sections of titanium alloy pipes 101 together;

[0047] Disassembly: Drive the motor 11 to rotate in reverse. The motor 11 drives the toothed disc 2 to rotate in the reverse direction through the gear 3. The spiral body 7 on the toothed disc 2 squeezes the guide rod 6, so that the plug board 4 moves toward the middle. At this time, the ends of the plug board 4 retract into the titanium alloy pipe 101, and the plug board 4 disengages from the gap between the two sections of titanium alloy pipes 101. Then, take out the titanium alloy pipe welding equipment from one of the titanium alloy pipes 101;

[0048] Full welding: Through the plasma welding technology, the welding gun performs full welding on the two sections of titanium alloy pipes 101;

[0049] For the titanium alloy pipe welding equipment, the provided plug board 4 can not only control the distance between the two sections of titanium alloy pipes 101, that is, control the axial distance between the two sections of titanium alloy pipes 101, but also the top plate 9 provided on the plug board 4 can constrain the radial offset of the two sections of titanium alloy pipes 101, that is, the two sections of titanium alloy pipes 101 can be on the same axis, ensuring the welding quality of the two sections of titanium alloy pipes 101.

[0050] Refer to Figure 2 - Figure 13 Each plug board 4 has an isosceles trapezoidal cross-section.

[0051] In this embodiment, from the direction close to the intermediate body 1 to the direction far from the intermediate body 1, the thickness of the plug board 4 is gradually reduced, that is, the cross-section of the plug board 4 is an isosceles trapezoid;

[0052] When welding titanium alloy pipes with different diameters and different wall thicknesses, the distance between two sections of titanium alloy pipes 101 is also different. Therefore, a plug plate 4 with inconsistent thicknesses at both ends is provided. As shown in Figure 12 and Figure 13 , the length of the plug plate 4 extending outward from the titanium alloy pipe 101 determines the distance between two sections of titanium alloy pipes 101. The greater the outward extension length, the greater the distance between two sections of titanium alloy pipes 101. Adjust the outward extension length of the end of the plug plate 4 according to the wall thickness and diameter of the titanium alloy pipe 101. At the same time, install the top plate 9 in the corresponding card slot 8. After the outward extension of the end of the plug plate 4 reaches the set length, the top plate 9 can abut against the inner surface of the titanium alloy pipe 101, stably joining the two sections of titanium alloy pipes together, ensuring that the subsequent spot welding process can be carried out smoothly.

[0053] Referring to Figure 8 - Figure 13 , a plurality of rotating grooves are formed in the side wall of each guide rod 6, and a steel ball 12 is rotatably connected in each rotating groove;

[0054] When the plug plate 4 moves away from the intermediate body 1 or moves closer to the intermediate body 1, the sliding rod 5 is slidably connected inside the middle, ensuring the movement stability of the plug plate 4. At the same time, the steel balls 12 provided on the guide rod 6 convert the sliding friction between the spiral body 7 and the guide rod 6 into the rolling friction between the steel balls 12 and the spiral body 7, reducing the relative movement resistance between the guide rod 6 and the spiral body 7, improving the respective execution stabilities of the gear disk 2 and the plug plate 4, and helping the top plate 9 to stably press against the inner surface of the two sections of titanium alloy pipes 101.

[0055] Referring to Figure 2 - Figure 10 , and Figure 14 - Figure 16 , columns 13 are provided at both ends of the intermediate body 1. A sliding groove 14 is formed in the outer side wall of the column 13, and a base block 15 is slidably connected in the sliding groove 14. An electric push rod 16 is provided on the base block 15. The rod body of the electric push rod 16 is perpendicular to the side wall of the column 13, and the output end of the electric push rod 16 is fixedly connected with a support plate 17;

[0056] In this embodiment, an electric jack 18 is provided on one end face of the designed base block 15. The electric jack 18 is electrically connected to the electric push rod 16 on the base block 15. An electric plug rod 19 adapted to the electric jack 18 is provided on the inner side wall of the sliding groove 14. After the base block 15 slides into the sliding groove 14, the electric plug rod 19 is inserted into the electric jack 18, and the electric push rod 16 is connected to the power supply;

[0057] The column 13 is arranged to cooperate with the electric push rod 16, which is used to further support and strengthen the stability between two sections of titanium alloy pipes 101. Considering that the lengths and diameters of the welded titanium alloy pipes 101 have various specifications and different weights, for the welding of some titanium alloy pipes 101 with larger diameters or thicker walls, the column 13 is used in cooperation with the electric push rod 16 to enhance the support control of the two sections of titanium alloy pipes 101 and stabilize the distance between the two sections of titanium alloy pipes 101.

[0058] The specific operation is as follows. First, place one column 13 inside one section of the titanium alloy pipe 101, then proceed according to the titanium alloy pipe welding equipment process. After that, place the other column 13 inside the other section of the titanium alloy pipe 101 as well. Then drive the electric push rod 16, and the electric push rod 16 drives the support plate 17 to press against the inner surface of the titanium alloy pipe 101, fixing the two sections of titanium alloy pipes 101 together and improving the stability between the two sections of titanium alloy pipes 101.

[0059] Refer to Figure 2 - Figure 10 and Figure 14 - Figure 16 At the middle position of the end of each column 13, a cross-shaped rotating plate 20 is rotatably connected. Each end of the rotating plate 20 is threadedly connected with a screw rod 21, and the end of the screw rod 21 can press the base block 15 in the sliding groove 14.

[0060] In this embodiment, the electric push rod 16 and the base block 15 are modularly designed. The output end support forces and extension lengths of electric push rods 16 of different models are different. In order to support titanium alloy pipes of different sizes, the electric push rod 16 and the base block 15 are of a replaceable type, that is, modularly designed, and different models of electric push rods 16 are selected according to the size of the titanium alloy pipe 101.

[0061] The base block 15 is slidably connected in the sliding groove 14, which facilitates the replacement of the electric push rod 16. However, there are also deficiencies. The stability between the base block 15 and the sliding groove 14 is insufficient. Therefore, the rotating plate 20 is provided. The rotating plate 20 is threadedly connected with the screw rod 21. After the base block 15 is slidably installed in the sliding groove 14, rotate the rotating plate 20 so that each end of the rotating plate 20 is opposite to the notch of the sliding groove 14. Then rotate the screw rod 21, and the end of the screw rod 21 gradually extends into the sliding groove 14 and presses the base block 15 inside the sliding groove 14. This can not only ensure the stability of the base block 15, enabling the electric push rod 16 to stably press the support plate 17 against the inner surface of the titanium alloy pipe 101, but also improve the electrical connection stability between the electric socket 18 and the electric plug rod 19.

[0062] Refer to Figure 2 - Figure 10 and Figure 14 - Figure 16, a connecting column 22 is provided at the end of the intermediate body 1, a U-shaped connecting plate 23 is provided at the end of the connecting column 22, and two plate bodies of the connecting plate 23 are rotatably connected to the outer ring of the connecting column 22, and the end face of the connecting plate 23 is fixedly connected to the column body 13.

[0063] In the seawater desalination project, the titanium alloy pipes 101 in the pipeline system include both straight pipes and bent pipes. For welding titanium alloy bent pipes and titanium alloy straight pipes, or welding two sections of titanium alloy bent pipes, as Figure 2 shown, it is also applicable. A U-shaped connecting plate 23 is rotatably connected to the connecting column 22, and two plate bodies of the connecting plate 23 are fixed to the connecting column 22 by means of bolts and nuts. After adjusting the angle between the column body 13 and the intermediate body 1, tighten the nuts to fix the relative rotation between the connecting column 22 and the connecting column 22, and then place the two column bodies 13 into two titanium alloy bent pipes respectively. Drive the electric push rod 16, and the support plate 17 abuts against the inner surface of the titanium alloy bent pipe to fix the two sections of titanium alloy bent pipes.

[0064] Refer to Figure 2 - Figure 10 and Figure 14 - Figure 16 , the connecting column 22 is rotatably connected inside the intermediate body 1;

[0065] As Figure 11 shown, in the pipeline system, this situation may also exist, that is, the axes of two sections of titanium alloy bent pipes are in a skew state, and this situation can also achieve fixed welding; the connecting column 22 is rotatably connected inside the end of the intermediate body 1, and a set screw 24 is threadedly connected to the outer side wall of the end of the intermediate body 1. By rotating the set screw 24, the rotated and adjusted connecting column 22 can be stabilized. Then, place the two column bodies 13 into the two sections of titanium alloy bent pipes respectively, and then drive the electric push rod 16, and the support plate 17 abuts against the inner surface of the titanium alloy bent pipe to fix the two sections of titanium alloy bent pipes.

[0066] Refer to Figure 6 - Figure 9 , an annular scale 25 is provided on the end face of the intermediate body 1, and a pointer is provided on the outer ring of the connecting column 22;

[0067] By setting the scale 25 and the pointer, the outer rotation angle of the connecting column 22 can be quickly adjusted, improving the overall welding efficiency.

[0068] Refer to Figure 7 , annular grooves 26 are symmetrically opened on the outer ring of the intermediate body 1, and the inner ring of the gear disk 2 is rotatably connected in the annular grooves 26;

[0069] The opened annular groove 26 is used to restrain the toothed disc 2. Bearings can be arranged on the inner ring of each toothed disc 2. The outer ring of the bearing is fixed on the inner ring of the toothed disc 2, and the inner ring of the bearing is fixed in the annular groove 26, which improves the rotational stability of the toothed disc 2. At the same time, the annular groove 26 is used to limit the swing of the toothed disc 2, so that the toothed disc 2 is in a stable state when meshing with the gear 3.

[0070] Refer to Figure 16 , rubber plates 27 are arranged on the outer surfaces of each of the support plates 17. It is characterized in that: rubber plates 27 are arranged on the outer surfaces of each of the support plates 17; rubber plates 27 are arranged on the outer surfaces of the support plates 17, and the rubber plates 27 can prevent the inner surface of the titanium alloy pipe 101 from being extruded and worn by the support plates 17 made of metal material, and it also provides buffer protection for the titanium alloy pipe 101.

[0071] Working principle: The specific operation process of this titanium alloy pipe welding equipment is as follows:

[0072] Installation: First, drive the motor 11. The motor 11 drives the toothed disc 2 to rotate through the gear 3. The toothed disc 2 drives the spiral body 7 with a spiral shape on its inner side wall to rotate. The side wall of the spiral body 7 extrudes the guide rod 6, and the guide rod 6 drives the plug board 4 to extend and move in the outer direction of the intermediate body 1, so that the diameter of the circle formed by the ends of the plug board 4 is larger than the outer diameter of the titanium alloy pipe 101. Then, place the intermediate body 1 between two sections of titanium alloy pipes 101. At this time, the welding end faces of the two sections of titanium alloy pipes 101 are abutted against the plug board 4, and there is a gap between the top plate 9 on the plug board 4 and the titanium alloy pipe 101. Then, drive the motor 11 to rotate, and the plug board 4 continues to move in the outer direction of the intermediate body 1. The plug board 4 drives the top plate 9 to abut against the inner side wall of the titanium alloy pipe 101. At this time, the axial distance between the two sections of titanium alloy pipes 101 is limited by the thickness of the plug board 4, that is, the width reserved for welding. At the same time, in the radial direction, the two sections of titanium alloy pipes 101 are constrained by the synchronously moving top plate 9, that is, the two sections of titanium alloy pipes 101 are on the same axis;

[0073] Pre-welding: Through the plasma welding technology, multiple-position spot welding is first carried out between two sections of titanium alloy pipes 101, and the spot welding can fix the two sections of titanium alloy pipes 101 together;

[0074] Disassembly: Drive the motor 11 to rotate in the reverse direction. The motor 11 drives the toothed disc 2 to rotate in the reverse direction through the gear 3. The spiral body 7 on the toothed disc 2 extrudes the guide rod 6, so that the plug board 4 moves towards the middle direction. At this time, the ends of the plug board 4 retract into the titanium alloy pipe 101, and the plug board 4 disengages from the gap between the two sections of titanium alloy pipes 101. Then, take out this titanium alloy pipe welding equipment from one of the titanium alloy pipes 101;

[0075] Full welding: Through the plasma welding technology, full welding is carried out on the two sections of titanium alloy pipes 101.

[0076] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A titanium alloy pipeline welding equipment, characterized in that: It comprises an adjustment unit for adjusting the distance between two adjacent pipe sections, and the adjustment unit comprises a rectangular parallelepiped intermediate body (1) and an adjustment component arranged on the intermediate body (1); The adjustment assembly comprises two toothed discs (2), the inner rings of the two toothed discs (2) being rotatably connected to the outer ring of the intermediate body (1), the outer rings of the two toothed discs (2) being meshed with gears (3), the gears (3) being arranged on the intermediate body (1) via a support frame (10), a plurality of insert plates (4) being arranged between the two toothed discs (2), a sliding rod (5) being fixedly connected to the middle position of one end surface of each insert plate (4), and the sliding rod (5) being slidably connected to the interior of the intermediate body (1); A guide rod (6) is provided on the outer side wall of each of the insert plates (4), and the ends of the guide rod (6) are respectively opposite to the inner side walls of the two toothed discs (2); A vortex-shaped spiral body (7) is provided on the inner side walls of the two toothed discs (2), and the end of the guide rod (6) is slidably connected to the upper spiral body (7); A plurality of slots (8) are symmetrically provided on the side walls of each plug board (4), and a top plate (9) is provided between two opposite slots (8). The top plate (9) is U-shaped, and the inner side of the top plate (9) is slidably connected to the slots (8).

2. The titanium alloy pipeline welding equipment according to claim 1 is characterized in that: The cross section of each insert plate (4) is in the shape of an isosceles trapezoid.

3. The titanium alloy pipeline welding equipment according to claim 1 is characterized in that: A plurality of rotation grooves are formed on the side wall of each guide rod (6), and a steel ball (12) is rotatably connected in each rotation groove.

4. The titanium alloy pipeline welding equipment according to claim 1 is characterized in that: The intermediate body (1) is provided with a column (13) at both ends, a slide groove (14) is provided on the outer wall of the column (13), a base block (15) is slidably connected in the slide groove (14), an electric push rod (16) is provided on the base block (15), the rod body of the electric push rod (16) is arranged perpendicular to the side wall of the column (13), and a support plate (17) is fixedly connected to the output end of the electric push rod (16).

5. The titanium alloy pipeline welding equipment according to claim 4 is characterized in that: A "cross"-shaped rotating plate (20) is rotatably connected to the middle position of the end of each column (13), and a screw rod (21) is threadedly connected to each end of the rotating plate (20). The end of the screw rod (21) can squeeze the base block (15) into the slide groove (14).

6. The titanium alloy pipeline welding equipment according to claim 4 is characterized in that: The end of the intermediate body (1) is provided with a connecting column (22), and the end of the connecting column (22) is provided with a U-shaped connecting plate (23), two plates of the connecting plate (23) are rotatably connected to the outer ring of the connecting column (22), and the end surface of the connecting plate (23) is fixedly connected to the column (13).

7. The titanium alloy pipeline welding equipment according to claim 6 is characterized in that: The connecting column (22) is rotatably connected inside the intermediate body (1).

8. The titanium alloy pipeline welding equipment according to claim 7 is characterized in that: A ring-shaped scale (25) is provided on the end surface of the intermediate body (1), and a pointer is provided on the outer ring of the connecting column (22).

9. The titanium alloy pipeline welding equipment according to claim 1, characterized in that: An annular groove (26) is symmetrically provided on the outer ring of the intermediate body (1), and the inner ring of the toothed disc (2) is rotatably connected in the annular groove (26).

10. The titanium alloy pipeline welding equipment according to claim 4, characterized in that: A rubber plate (27) is provided on the outer surface of each support plate (17).

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