Auxiliary welding connecting device for curved titanium pipe

Abstract

The utility model discloses an auxiliary welding connecting device for a bent road titanium pipe. The auxiliary welding connecting device comprises a supporting mechanism and a positioning mechanism, wherein the supporting mechanism is detachably and perpendicularly assembled on a straight pipe at one end, and the positioning mechanism is perpendicularly connected with the supporting mechanism and drives a bent pipe to be connected with the straight pipe. And the supporting mechanism comprises an assembly clamping plate and a connecting rod which are hinged and jointed and clamped on the circumferential surface of the straight pipe in a sleeving manner. The positioning mechanism comprises a positioning rod and a positioning column which are vertically and movably arranged in the connecting rod in a penetrating mode. According to the auxiliary welding connection device, the supporting mechanism is vertically assembled on the transverse straight pipe and close to the end opening, then the supporting mechanism is vertically assembled on the positioning mechanism, then the bent pipe is connected with the positioning mechanism, the positioning mechanism serves as a positioning base point of the bent pipe and the straight pipe, and accurate positioning of the bent pipe and the transverse straight pipe is achieved. Therefore, the welding precision of the bent pipe and the straight pipe can be guaranteed after welding, the position precision of subsequent vertical straight pipe welding is further guaranteed, and the welding quality of the pipe body, especially the welding quality of the straight pipe and the bent pipe is improved.

Description

Technical Field

[0001] The present application relates to the technical field of welding curved pipes and straight pipes, and in particular to an auxiliary welding connection device for curved titanium pipes. Background Art

[0002] At present, pipelines are widely used in industrial production, covering almost all occasions that require the transportation of fluids or solid particles, such as urban water supply and drainage, agricultural irrigation, petrochemicals, natural gas transmission and distribution, etc. In the process of oil refining and chemical production, pipelines are an important means of transportation, which can safely and effectively transport oil, gas, oil products, chemical raw materials, etc. to various production links. Pipelines are also widely used in fields such as pharmaceuticals, and with the advancement of science and technology and the continuous development of engineering technology, the scope of application of pipelines will be further expanded. At the same time, research and improvements on pipeline materials, connection methods, anti-corrosion measures, etc. are also ongoing to improve the safety, reliability and service life of pipelines.

[0003] At present, in actual applications, pipelines are usually laid according to the design requirements of production sites and equipment. Metal pipelines are usually used in the industrial field, such as corrosion-resistant titanium pipes. The direction of pipeline laying is varied, such as welding connection of straight pipes and bent pipes to change the direction of the pipeline, forming a pipeline as shown in the attached manual. Figure 1 The welding process is as follows: Figure 2 As shown, firstly one end of the bent pipe is welded to the horizontal straight pipe port, and then the vertical straight pipe port is connected to the other end of the bent pipe, thereby realizing the change of pipeline direction. This change of welding direction is widely used in pipeline laying welding.

[0004] At present, when welding on the construction site, there is usually no relatively flat welding platform, and the pipe body is usually laid higher than the ground. Therefore, when welding the bent pipe to the horizontal straight pipe, the bent pipe is usually lifted manually, or the bent pipe is suspended and then welded to the straight pipe. This welding method cannot ensure the precise positioning of the bent pipe and the straight pipe, which may cause the following problems: Figure 3 The deflection in the direction indicated by the arrow in the middle arc will further lead to the deflection of the subsequent welded vertical elbow. The accumulation of such deflection errors will cause the subsequent welded pipe body to deviate too much from the designed position. Due to the arc structure of the elbow and the fact that the laid pipe body is usually off the ground and cannot be well positioned, the overall quality of pipeline laying and welding needs to be further improved. Summary of the invention

[0005] In response to the above-mentioned problems, the present application aims to provide an auxiliary welding connection device for curved titanium tubes, which uses a positioning mechanism as a positioning base point for the curved tube and the straight tube to achieve precise positioning of the curved tube and the horizontal straight tube, thereby ensuring the welding accuracy of the curved tube and the straight tube after welding, and further ensuring the position accuracy of subsequent vertical straight tube welding, thereby improving the quality of tube body welding, especially the welding quality of straight tubes and curved tubes.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is as follows: an auxiliary welding connection device for a curved titanium tube, both ends of which are welded to a straight tube, characterized in that: the auxiliary welding connection device includes a detachable support mechanism vertically assembled on one end of the straight tube, and a positioning mechanism vertically connected to the support mechanism and driving the curved tube to connect with the straight tube.

[0007] Preferably, the support mechanism comprises an assembly clamping plate which is hingedly connected and fits the sleeve on the circumference of the straight pipe, and a connecting rod which is vertically connected to the positioning mechanism is extended from one end of the assembly clamping plate.

[0008] Preferably, the positioning mechanism is a positioning rod vertically and movably inserted into the connecting rod, a positioning column is arranged at the end of the positioning rod, and one end of the positioning column is arranged as a cone that fits the inner port of the curved titanium tube.

[0009] Preferably, a positioning step flush with the end of the curved titanium tube is provided on the positioning column and at the bottom end of the cone.

[0010] The beneficial effect of the present application is that the auxiliary welding connection device vertically assembles the supporting mechanism on the horizontal straight pipe and close to the port, and then vertically assembles the supporting mechanism on the positioning mechanism, and then connects the bent pipe to the positioning mechanism. The positioning mechanism serves as the positioning base point of the bent pipe and the straight pipe, and realizes the precise positioning of the bent pipe and the horizontal straight pipe, so that the welding accuracy of the bent pipe and the straight pipe can be guaranteed after welding, and the position accuracy of the subsequent vertical straight pipe welding can be further guaranteed, thereby improving the quality of pipe body welding, especially the welding quality of straight pipes and bent pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the current welding forming diagram of bent pipes and straight pipes.

[0012] Figure 2 This is a diagram of the welding process of bent pipes and straight pipes.

[0013] Figure 3 This is a diagram showing the axial deflection that occurs when welding a bent pipe to a straight pipe.

[0014] Figure 4 This is a diagram of the overall structure of the auxiliary welding connection device of this application.

[0015] Figure 5This is a diagram showing the relative positioning of the bent pipe and the transverse straight pipe achieved by the auxiliary welding connection device of this application.

[0016] Figure 6 For this application Figure 5 Illustration of the middle bend pipe deflecting on the cone.

[0017] Figure 7 To achieve this application Figure 5 Illustration of the flat positioning structure of the bent pipe.

[0018] Figure 8 Illustration of the positioning welding of vertical straight pipes and curved pipes for this application.

[0019] Fig. 9 This is a diagram showing the current manual direct welding of bent pipes and straight pipes.

[0020] In the figure: 5-curved titanium tube; 6-straight tube. 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] See attached Figures 1 to 8 The auxiliary welding connection device of the curved titanium tube shown in the figure, both ends of the curved titanium tube 5 are welded to the straight tube 6, and the welding is formed as shown in the figure. Figure 1 In order to solve the problem that the curved titanium tube 5 is easy to be welded with the straight tube 6 during the current welding operation, the present application designs an auxiliary welding connection device, such as Figure 4-5 As shown, it includes a support mechanism that is detachable and vertically assembled on the straight pipe at one end, and a positioning mechanism that is vertically connected to the support mechanism and drives the bent pipe to connect with the straight pipe. Before welding the bent pipe, the support mechanism is firstly vertically assembled on the transverse straight pipe and close to the port, and then the support mechanism is vertically assembled on the positioning mechanism, and then the bent pipe is connected to the positioning mechanism. The positioning mechanism serves as the positioning base point of the bent pipe and the straight pipe to achieve accurate positioning of the bent pipe and the transverse straight pipe, so that the welding accuracy of the bent pipe and the straight pipe can be guaranteed after welding, and the position accuracy of the subsequent vertical straight pipe welding can be further guaranteed.

[0023] Specifically, Figure 4-5 As shown, the support mechanism includes an assembly card plate 1 which is hingedly connected and fits on the circumference of the straight pipe. It is a two-half arc-shaped hinged structure. After the hinge is opened, it can be fitted on the horizontal straight pipe and the assembly position can be adjusted. After that, the assembly card plate 1 can be connected and locked on the horizontal straight pipe by connecting bolts, as shown in FIG. Figure 5 shown.

[0024] In order to achieve connection with the positioning mechanism, a connecting rod 2 vertically connected to the positioning mechanism is extended from one end of the assembly clamping plate 1 .

[0025] Specifically, Figure 4-5 As shown, the positioning mechanism is a positioning rod 3 which is vertically and movably inserted into the connecting rod 2. The positioning rod 3 preferably has a rectangular cross-section. It is inserted into the connecting rod 2 to limit its axial rotation. In the subsequent positioning of the bent pipe, the rotation of the bent pipe compared to the horizontal straight pipe can be avoided, thereby ensuring that the two are in the same plane.

[0026] Further, a positioning column 4 is provided at the end of the positioning rod 3, and one end of the positioning column 4 is provided as a conical body 41 that fits the inner port of the curved titanium tube. Figure 5 As shown, firstly, the positioning rod 3 is inserted into the connecting rod 2, and then the port of the bent pipe is clamped on the conical body 41 of the positioning column 4 (the center line of the positioning column 4 passes through the mutually perpendicular positioning rod 3, the connecting rod 2 and the transverse straight pipe, so that the axis of the bent pipe corresponds to the axis of the transverse straight pipe), and then the positioning rod 3 is moved horizontally in the connecting rod 2 ( Figure 5 As shown by the arrow in the middle, the port of the bent pipe is brought close to the port of the transverse straight pipe, and then the welding operation of the butt joint pipe port can be performed to ensure the welding accuracy of the bent pipe and the transverse straight pipe. After the welding is completed, the assembly card 1 is opened to realize the rapid disassembly of the entire device and the pipe body.

[0027] When welding vertical straight pipes, Figure 8 As shown, a structure with an assembly card plate 1 and a positioning rod 3 is adopted. The positioning rod 3 is first inserted into the connecting rod 2, and then the vertical straight pipe is sleeved in the assembly card plate 1, and the position height of the vertical straight pipe is adjusted. Then, the positioning rod 3 is horizontally moved in the assembly card plate 1, so that the axis of the vertical straight pipe corresponds to the axis of the elbow pipe mouth, and the vertical straight pipe and the elbow can be vertically welded. After the welding is completed, the assembly card plates 1 on the horizontal and vertical straight pipes are removed to complete the rapid disassembly of the entire device.

[0028] like Figure 6 As shown, in order to avoid the problem of left-right deflection when the bent pipe is assembled on the conical body 41 of the positioning column 4 ( Figure 6 As shown by the curved arrow in the middle Figure 7 As shown, a positioning step 42 is provided on the positioning column 4 and at the bottom end of the cone 41, which is flush with the end of the curved titanium tube. After the inner end of the curved tube is circumferentially contacted with the cone 41, the end surface of the curved tube is also flatly contacted with the positioning step 42, which can limit the deflection of the curved tube compared to the cone 41, ensure the coaxiality of the curved tube and the transverse straight tube, and improve the welding accuracy.

[0029] The principle of the present application is: when performing welding operation of a curved pipe and a straight pipe, firstly, the assembly card plate 1 is opened by hinge, and then the card is assembled on the transverse straight pipe and the assembly position is adjusted, and then the assembly card plate 1 can be connected and locked on the transverse straight pipe by connecting bolts; then the positioning rod 3 is inserted into the connecting rod 2, and its axial rotation is limited by the rectangular cross section of the positioning rod 3, and then the port of the curved pipe is clamped on the conical body 41 of the positioning column 4, and at the same time, the port surface of the curved pipe is flatly contacted with the positioning step 42, and then the positioning rod 3 is moved horizontally in the connecting rod 2 to slide, so that the port of the curved pipe is close to the port of the transverse straight pipe, and then the welding operation of the butt joint pipe port can be performed to ensure the welding accuracy of the curved pipe and the transverse straight pipe. After the welding is completed, the assembly card plate 1 is opened, and the rapid disassembly of the entire device and the pipe body can be realized.

[0030] When welding the vertical straight pipe, a structure with an assembly card plate 1 and a positioning rod 3 is used. The positioning rod 3 is first inserted into the connecting rod 2, and then the vertical straight pipe is sleeved into the assembly card plate 1, and the position height of the vertical straight pipe is adjusted. Then, the positioning rod 3 is horizontally moved in the assembly card plate 1, so that the axis of the vertical straight pipe corresponds to the axis of the elbow, and the vertical straight pipe and the elbow can be vertically welded. After welding is completed, the assembly card plates 1 on the horizontal and vertical straight pipes are removed to complete the rapid disassembly of the entire device.

[0031] 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. An auxiliary welding connection device for a curved titanium tube, wherein both ends of the curved titanium tube are welded to a straight tube, characterized in that: The auxiliary welding connection device comprises a detachable supporting mechanism which is vertically assembled on one end of the straight pipe, and a positioning mechanism which is vertically connected to the supporting mechanism and drives the bent pipe to connect with the straight pipe.

2. The auxiliary welding connection device according to claim 1, characterized in that: The support mechanism comprises an assembly clamping plate (1) which is hingedly connected and fits the circumference of the straight pipe. A connecting rod (2) which is vertically connected to the positioning mechanism is extended from one end of the assembly clamping plate (1).

3. The auxiliary welding connection device according to claim 2, characterized in that: The positioning mechanism is a positioning rod (3) vertically and movably inserted into the connecting rod (2), a positioning column (4) is arranged at the end of the positioning rod (3), and one end of the positioning column (4) is arranged as a cone (41) that fits the inner port of the curved titanium tube.

4. The auxiliary welding connection device according to claim 3, characterized in that: A positioning step (42) is provided on the positioning column (4) and at the bottom end of the conical body (41), and is flush with the end of the curved titanium tube.

Images