Welding forming device for nonmetal three-way pipe body

Abstract

The utility model discloses a welding forming device for a non-metal three-way pipe body. The welding forming device comprises an assembling mechanism for connecting and positioning a first pipe body and a second pipe body and connecting and positioning the second pipe body and a third pipe body, and the assembling mechanism is arranged in a vertical plane in a hinged mode. The assembling mechanism comprises assembling columns which are in bilateral symmetry and arranged in the inclined direction by 45 degrees, the top side of each assembling column is provided with a conical table capable of being embedded into the inner pipe wall of the first pipe body and the inner pipe wall of the second pipe body, and positioning steps which are in pipe end contact are formed between the conical tables and the top ends of the assembling columns. The forming and welding device is provided with the assembling mechanism, so that respective and relative assembling and positioning during welding of the three-way pipe body can be realized, and the problems that deviation exists at a butt-joint bevel opening due to the influence of rolling of the pipe body and the like during manual welding, and the welding precision, the sealing performance and the welding strength are influenced are solved. And the assembling mechanism is arranged in the vertical plane in a hinged mode, the assembled pipe body can be subjected to hinged rotation through the assembling mechanism, and therefore axial continuous welding operation on the pipe body can be conveniently achieved.

Description

Technical Field

[0001] The present application relates to the technical field of non-metallic three-way pipe welding, and in particular to a welding forming device for a non-metallic three-way pipe. Background Art

[0002] The current development trend of high-pressure flexible composite pipes (RTP) is good, and it can replace metal pipes in many application scenarios. It is well known that pipe fittings are indispensable in the use of high-pressure flexible composite pipes (RTP), and the current high-pressure pipe fittings are all made of metal, and there are no matching non-metallic high-pressure pipe fittings (including elbows, tees, reducers, etc.). Due to the characteristics of metal materials themselves, there are a series of disadvantages such as poor corrosion resistance, high prices, and difficulty in connecting with non-metallic pipes, which has led to a significant reduction in the service life of high-pressure flexible composite pipes (RTP), affecting the healthy development of the high-pressure flexible composite pipe (RTP) industry.

[0003] At present, the PE elbows and tees on the market are relatively mature, but their pressure resistance level is low, the scope of application is small, and the specifications and sizes cannot meet the use requirements of high-pressure flexible composite pipes (RTP). High-pressure flexible composite pipes (RTP) are applicable to complex working conditions, high pressure resistance levels, and very high requirements for temperature resistance and impact resistance, so the traditional PE non-metallic elbows and tees cannot meet the current on-site use conditions of non-metallic composite pipes. Therefore, it is necessary to make the straight pipe of the high-pressure flexible composite pipe (RTP) into an elbow and tee pipe structure. For the elbow structure, it can be bent and deformed after high-temperature heating, or a curved extrusion die can be used to form a curved pipe structure through extrusion and die forming.

[0004] As for the structural limitation of the three-way structure, it is usually impossible to directly extrude the three-way pipe body structure. Therefore, three straight pipes with oblique openings are welded into a three-way pipe body structure (as shown in the attached manual). Figure 1 As shown in the figure). The welding of the tee pipe body is currently formed by manual welding. Because the high-pressure flexible composite pipe can withstand greater pressure than ordinary non-metallic pipes, and the pipe diameter is large and the use environment is harsh, it is usually also used for the transportation of chemical substances. Therefore, the sealing and welding strength of the pipe body welding usually cannot meet the requirements. Summary of the invention

[0005] In response to the above-mentioned problems, the present application aims to provide a welding forming device for a non-metallic three-way pipe body, which solves the problem of deviation at the butt bevel caused by the rolling of the pipe body during manual welding, as well as the problem of affecting the welding accuracy, sealing and welding strength, and can also facilitate the axial continuous welding operation of the pipe body.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is as follows: a welding and forming device for a non-metallic three-way pipe body, wherein the three-way pipe body includes a first pipe body with a beveled outlet, a second pipe body and a third pipe body, and the second pipe body is vertically connected to the first pipe body and the third pipe body. It is characterized in that: the welding and forming device includes an assembly mechanism for connecting and positioning the first pipe body and the second pipe body, and the second pipe body and the third pipe body respectively, and the assembly mechanism is hingedly arranged in a vertical plane.

[0007] Preferably, the assembly mechanism includes assembly columns that are symmetrical on both sides and arranged at an angle of 45 degrees, and a conical platform that can be embedded in the inner wall of the first tube body and the second tube body is provided on the top side of each side of the assembly column, and a positioning step for contacting the tube end is formed between the conical platform and the top end of the assembly column.

[0008] Preferably, a sliding base is provided at the bottom of each assembly column, and a sliding rail is provided at the bottom of the sliding base.

[0009] Preferably, a fastening bolt which can be tightened against the slide rail is provided on each side of the sliding base.

[0010] Preferably, a base is hinged at the bottom of the slide rail, and the rotation angle of the slide rail is not less than 180°.

[0011] The beneficial effect of the present application is that the assembly mechanism of the forming welding device can realize the separate and relative assembly positioning during the welding of the three-way pipe body, and solve the problem of deviation at the butt bevel caused by the rolling of the pipe body during manual welding, as well as the problem of affecting the welding accuracy, sealing and welding strength.

[0012] The assembly mechanism is hingedly arranged in the vertical plane, which can hinge and rotate the assembled pipe body, thereby facilitating the axial continuous welding operation of the pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a diagram of the welding structure of a non-metallic tee pipe body.

[0014] Figure 2 The figure shows the welding process of the first pipe body and the second pipe body of the non-metallic tee pipe body.

[0015] Figure 3 for Figure 2 Illustration of the bevel cutting of the first tube body and the second tube body formed by welding.

[0016] Figure 4 For Figure 3 The third tube body welding diagram is carried out based on the cutting.

[0017] Figure 5 This is a diagram of the overall structure of the welding forming device of this application.

[0018] Figure 6 This is a diagram showing the assembly and positioning of the first tube body and the second tube body of the welding forming device of the present application.

[0019] Figure 7 This is a diagram illustrating the circumferential flip welding process of the first tube body and the second tube body of the present application.

[0020] Figure 8 This is a diagram showing the assembly and positioning of the third tube body of the present application. DETAILED DESCRIPTION

[0021] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Refer to the attached Figures 1 to 8 The device for welding and forming a non-metallic three-way pipe body is shown, wherein the three-way pipe body comprises a first pipe body 1 with a beveled opening, a second pipe body 2 and a third pipe body 3, wherein the second pipe body 2 is vertically connected to the first pipe body 1 and the third pipe body 3, and the first pipe body 1 and the third pipe body 3 are coaxial. When welding, the first pipe body 1 and the second pipe body 2 are first welded and formed ( Figure 2 As shown), the first tube body 1 and the second tube body 2 are then beveled ( Figure 3 As shown), the bevel of the third tube body 3 is then connected to the bevel and welded to form ( Figure 4 As shown), after welding, the shape is as Figure 1 shown.

[0023] In order to improve the welding quality of high-pressure flexible composite pipes (RTP) with large diameter three-way structures, the present application designs a welding forming device for three-way pipe bodies, which includes an assembly mechanism for respectively connecting and positioning the first pipe body 1 and the second pipe body 2, and the second pipe body 2 and the third pipe body 3. When welding the pipe bodies, the first pipe body 1 and the second pipe body 2 are respectively and relatively assembled and positioned to solve the problem of deviation at the butt bevel caused by the rolling of the pipe body during manual welding, and the problem of affecting the welding accuracy, sealing and welding strength. After the first pipe body 1 and the second pipe body 2 are positioned and welded, the second pipe body 2 and the third pipe body 3 are also assembled and positioned to achieve the complete welding operation of the three-way structure pipe body.

[0024] Since the bevel weld of the butt-welded pipe body is still a circumferential weld, in order to facilitate the circumferential continuous welding operation in the positioned assembly state, the assembly mechanism is hinged in the vertical plane, which can hinge and rotate the assembled pipe body, thereby facilitating the axial continuous welding operation of the pipe body.

[0025] Specifically, Figure 5-6As shown, the assembly mechanism includes an assembly column 4 that is symmetrical and obliquely arranged at 45°, which is used for assembly positioning before welding the first tube body 1 and the second tube body 2. In order to facilitate the assembly positioning of the tube body, a conical platform 41 that can be embedded in the inner tube wall of the first tube body 1 and the second tube body 2 is provided on the top side of each side of the assembly column 4, and a positioning step 42 that contacts the tube end is formed between the conical platform 41 and the top of the assembly column 4. During operation, the first tube body 1 and the second tube body 2 are respectively inserted into the conical platform 41 of the corresponding assembly column 4, and the tube end is abutted against the positioning step 42, so that through the structural pre-design of the assembly column 4, the oblique mouths of the assembled first tube body 1 and the second tube body 2 are precisely in contact, so that the welding operation of the two can be carried out.

[0026] When welding the third tube body 3, both the third tube body 3 and the second tube body 2 are sleeved on the assembly column 4 ( Figure 8 As shown), the circumferential welding operation of the third tube body 3 with the first tube body 1 and the second tube body 2 is realized.

[0027] Preferably, a hard rubber pad (not shown in the figure) with the same structure is provided on the outer cover of the conical platform 41, which can be pressed and contacted with the inner wall of the tube body to achieve assembly and tightening of the tube body.

[0028] During the assembly and positioning of the above-mentioned pipe bodies before welding, since the pipe bodies to be butt-welded are all assembled at an angle, there is interference between them during the oblique assembly. Therefore, in order to solve this problem, Figure 5-6 As shown, a sliding base 5 is provided at the bottom of each assembly column 4, and a slide rail 6 is provided at the bottom of the sliding base 5. When assembling the tube body, the symmetrical sliding bases 5 are first slid away, and then the tube body is quickly assembled on each assembly column 4. After the assembly is completed, the sliding bases 5 are driven toward each other so that the oblique openings of the tube bodies on both sides are attached to each other for welding. After the welding is completed, the first tube body 1 and the second tube body 2, which form an integrated structure, are driven upward to be disengaged, and the assembly columns 4 are synchronously slid toward the two sides, so that the assembly columns 4 can be smoothly disengaged and disassembled from the first tube body 1 and the second tube body 2 of the welded integrated structure.

[0029] In order to prevent the sliding of the sliding base 5 from affecting the butt joint of the pipe body during welding, Figure 5-6 As shown, each side of the sliding base 5 is provided with a fastening bolt 7 that can be tightened on the slide rail 6. After the pipe body is docked, the fastening bolt 7 is rotated and tightened on the slide rail 6 to limit the movement of the pipe body during welding.

[0030] To achieve the circumferential welding operation of the pipe body, such as Figure 7 As shown, a base 8 is hinged at the bottom of the slide rail 6, and the rotation angle of the slide rail 6 is not less than 180°. The slide rail 6 is rotated from one side to the other side at a constant speed. During the rotation process, continuous circumferential welding operation can be achieved on the bevel of the pipe body, thereby improving the continuity of welding and the convenience of operation.

[0031] The principle of the present application is: when assembling the tube body, first slide the symmetrical sliding base 5 away, then sleeve the first tube body 1 and the second tube body 2 on each side of the conical platform 41 and contact and position with the positioning step 42, then drive the sliding base 5 in opposite directions, so that the oblique openings of the tube bodies on both sides are close to each other and rotate the fastening bolts 7 and press against the slide rail 6, then rotate the slide rail 6 from one side to the other side at a uniform speed, during the rotation process, continuous circumferential welding operation can be achieved on the oblique openings of the tube body, after welding is completed, the first tube body 1 and the second tube body 2 of the integrated structure are driven upward to disengage, and the assembly columns 4 are synchronously slid toward the two sides, so that the assembly columns 4 can be smoothly disengaged and disassembled from the first tube body 1 and the second tube body 2 of the welded integrated structure. The welding operation of the third tube body 3 is carried out in the same way.

[0032] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. A welding forming device for a non-metallic three-way pipe body, the three-way pipe body comprising a first pipe body (1) with a beveled opening, a second pipe body (2) and a third pipe body (3), the second pipe body (2) being vertically connected to the first pipe body (1) and the third pipe body (3), characterized in that: The welding forming device comprises an assembly mechanism for respectively connecting and positioning the first tube body (1) and the second tube body (2), and the second tube body (2) and the third tube body (3), and the assembly mechanism is hingedly arranged in a vertical plane.

2. The welding forming device according to claim 1, characterized in that: The assembly mechanism comprises an assembly column (4) which is bilaterally symmetrical and arranged at an angle of 45 degrees, wherein a conical platform (41) which can be embedded in the inner wall of the first tube body (1) and the second tube body (2) is arranged on the top side of each side of the assembly column (4), and a positioning step (42) which contacts the tube end is formed between the conical platform (41) and the top end of the assembly column (4).

3. The welding forming device according to claim 2, characterized in that: A sliding base (5) is provided at the bottom of the assembly column (4) on each side, and a sliding rail (6) is provided at the bottom of the sliding base (5).

4. The welding forming device according to claim 3, characterized in that: A fastening bolt (7) which can be tightened against the slide rail (6) is provided on each side of the sliding base (5).

5. The welding forming device according to claim 4, characterized in that: A base (8) is hinged at the bottom of the slide rail (6), and the rotation angle of the slide rail (6) is not less than 180°.

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