Protective supporting cover for titanium alloy pipeline welding

Abstract

The utility model relates to the technical field of titanium alloy pipeline welding, and discloses a protective supporting cover for titanium alloy pipeline welding, which comprises a cover body and connecting components mounted on two sides of the cover body, and each connecting component is provided with a limiting component for limiting the cover body; the cover body comprises a front cover, a rear cover, a plurality of groups of trapezoidal covers and a plurality of groups of flexible rubber plates; the plurality of groups of trapezoidal covers are arranged between the front cover and the rear cover; through cooperation of the cover body, the sealing outer rubber ring, the connecting assembly and the limiting assembly, and through the design of a trapezoidal cover and a flexible rubber plate of the cover body, the cover body can be integrally bent, so that the overall radian of the cover body is changed, the welding of titanium alloy pipelines of different specifications is facilitated, meanwhile, the limiting assembly is conveniently positioned through the connecting assembly, and the welding efficiency is improved. And the position of the connecting assembly is positioned by the limiting assembly, so that the cover body is limited after the radian is changed, and the stability of the cover body is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of titanium alloy pipe welding technology, specifically a protective cover for welding titanium alloy pipes. Background Technology

[0002] Titanium has a strong affinity for gases such as oxygen, hydrogen, and nitrogen at high temperatures. This affinity is especially strong during titanium welding, and it becomes even stronger as the welding temperature increases. Practice has shown that if the absorption and dissolution of titanium alloys with gases such as oxygen, hydrogen, and nitrogen are not controlled during welding, it will undoubtedly bring great difficulties to the welding process of titanium alloy joints.

[0003] In existing technologies, protective covers need to fit tightly against the outer wall of the pipe during use to ensure the sealing of the contact area between the protective cover and the pipe and prevent side leakage from affecting the purity of the gas inside the protective cover. However, when welding titanium alloy pipes of different specifications, protective covers with different outer curvatures are required according to the specifications of the titanium alloy pipes, which increases the cost of welding the pipes. Therefore, we need to propose a protective cover for welding titanium alloy pipes. Utility Model Content

[0004] The purpose of this utility model is to provide a protective cover for welding titanium alloy pipes, which facilitates the adjustment of the outer curvature of the cover, thereby making the cover suitable for titanium alloy pipes of different specifications, reducing the number of covers used, thereby reducing welding costs and improving practicality, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective cover for welding titanium alloy pipes, comprising:

[0006] The cover body, and the connecting components installed on both sides of the cover body, each of the connecting components being provided with a limiting component for limiting the position of the cover body;

[0007] The cover includes a front cover, a rear cover, multiple sets of trapezoidal covers, and multiple sets of flexible rubber sheets. The multiple sets of trapezoidal covers are arranged between the front cover and the rear cover, and the multiple sets of trapezoidal covers are arranged at equal angles. The multiple sets of trapezoidal covers and the multiple sets of flexible rubber sheets are arranged alternately. A folding seam for installing the flexible rubber sheets is provided between two adjacent sets of trapezoidal covers. The opening ends of the front cover, the rear cover, and the multiple sets of trapezoidal covers are provided with sealing outer rubber rings.

[0008] Preferably, the connecting assembly includes a first positioning post, a rear positioning post, and a front positioning post. The first positioning post is fixedly connected to one side of the trapezoidal cover located in the middle. The rear positioning post and the front positioning post are respectively disposed on one side of the rear cover and the front cover. One end of the first positioning post is threaded with a wing bolt.

[0009] Preferably, the outer side of the butterfly bolt is provided with a limiting ring, the outer side of the butterfly bolt is sleeved with a sleeve ring on the limiting ring, and the outer side of the sleeve ring is provided with three groups of right-angle positioning rods.

[0010] Preferably, the limiting assembly comprises a first disc and a second disc rotatably arranged on the outer side of the first positioning column, one side of the first disc is provided with a reinforcing pipe for the three groups of right-angle positioning rods to penetrate, one side of the second disc is provided with an annular tooth groove, and one end of the three groups of right-angle positioning rods is provided with a protrusion matched with the annular tooth groove.

[0011] Preferably, the outer side of the first disc is integrally formed with a first connecting plate, one side of the first connecting plate is provided with a first guide hole for slidingly arranging a second connecting column, and the outer side of the second disc is integrally formed with a second connecting plate, one side of the second connecting plate is provided with a second guide hole for slidingly arranging the front positioning column.

[0012] Preferably, the side adjacent to the front positioning column of the front cover is sequentially provided with a welding gun clamping piece and a drainage cover from top to bottom, and the front cover is provided with an exhaust hole in communication with the drainage cover.

[0013] Preferably, the outer side of the rear cover is provided with an argon gas inlet pipe, and the outer side of the trapezoidal cover in the middle is fixedly connected with a handle.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model mainly through the cooperation between cover body, sealing outer rubber ring, connecting assembly and limiting assembly, through the design of the trapezoidal cover and flexible rubber plate of cover body, the cover body can be bent as a whole, so as to change the overall arc of cover body, thereby being applicable to different specifications of titanium alloy pipeline welding, and the limiting assembly is positioned conveniently by connecting assembly, the position of connecting assembly is positioned by limiting assembly, thereby guaranteeing the limitation of cover body after the arc changes and the stability of cover body. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the overall structure schematic diagram of the utility model;

[0017] Fig. 2 It is the cover body explosion structure schematic diagram of the utility model;

[0018] Fig. 3 It is the connecting assembly and limiting assembly structure schematic diagram of the utility model.

[0019] In the figure: 1, cover body; 11, front cover; 12, rear cover; 13, trapezoidal cover; 14, folding seam; 15, flexible rubber plate; 2, welding gun clamp; 3, drainage cover; 4, argon gas inlet pipe; 5, exhaust hole; 6, sealing outer rubber ring; 7, connecting assembly; 71, first positioning column; 72, rear positioning column; 73, front positioning column; 74, butterfly bolt; 75, limiting ring; 76, sleeve ring; 77, right-angle positioning rod; 78, protruding block; 8, handle; 9, limiting assembly; 91, first disc; 92, second disc; 93, reinforcing pipe; 94, first connecting plate; 95, first guide hole; 96, annular tooth groove; 97, second connecting plate; 98, second guide hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figs. 1-3 The present application provides a technical solution: a protective cover for titanium alloy pipeline welding, comprising:

[0022] The cover body 1 and the connecting assembly 7 installed on both sides of the cover body 1 are provided with a limiting assembly 9 for limiting the cover body 1 on each connecting assembly 7;

[0023] The cover body 1 comprises a front cover 11, a rear cover 12, a plurality of trapezoidal covers 13 and a plurality of flexible rubber plates 15. The plurality of trapezoidal covers 13 are arranged between the front cover 11 and the rear cover 12, and the plurality of trapezoidal covers 13 are arranged at equal angles. The plurality of trapezoidal covers 13 and the plurality of flexible rubber plates 15 are arranged alternately. The folding seams 14 for mounting the flexible rubber plates 15 are arranged between the adjacent two groups of trapezoidal covers 13. The opening ends of the front cover 11, the rear cover 12 and the plurality of trapezoidal covers 13 are provided with the sealing outer rubber ring 6.

[0024] The connecting assembly 7 comprises a first positioning column 71, a rear positioning column 72 and a front positioning column 73. The first positioning column 71 is fixedly connected to one side of the trapezoidal cover 13 in the middle. The rear positioning column 72 and the front positioning column 73 are arranged on one side of the rear cover 12 and the front cover 11 respectively. The end of the first positioning column 71 is threadedly connected with the butterfly bolt 74. The front positioning column 73 and the rear positioning column 72 are used for facilitating the installation of the limiting assembly 9.

[0025] The outer side of the butterfly bolt 74 is provided with a limiting ring 75, the outer side of the butterfly bolt 74 is sleeved with a sleeve ring 76 located on the limiting ring 75, the outer side of the sleeve ring 76 is provided with three groups of right-angle positioning rods 77, which are simple and convenient to operate, can quickly release the positioning of the limiting assembly 9, and improve the adaptability of the support cover and the titanium alloy pipe.

[0026] The limiting assembly 9 comprises a first disc 91 and a second disc 92 which are rotationally arranged on the outer side of the first positioning column 71, the first disc 91 is provided with a reinforcing pipe 93 on one side for the three groups of right-angle positioning rods 77 to penetrate, the second disc 92 is provided with an annular tooth groove 96 on one side, one end of the three groups of right-angle positioning rods 77 is provided with a protrusion 78 which is matched with the annular tooth groove 96, the protrusion 78 is embedded in the annular tooth groove 96, which further improves the relative stability of the first disc 91 and the second disc 92, and the outer side of the first positioning column 71 is provided with an anti-dropping groove for rotationally mounting the first disc 91 and the second disc 92.

[0027] The outer side of the first disc 91 is integrally formed with a first connecting plate 94, the first connecting plate 94 is provided with a first guide hole 95 on one side for slidingly arranging a second connecting column, the outer side of the second disc 92 is integrally formed with a second connecting plate 97, the second connecting plate 97 is provided with a second guide hole 98 on one side for slidingly arranging the front positioning column 73, the first guide hole 95 and the second guide hole 98 facilitate the front positioning column 73 and the rear positioning column 72 to slide therein when the curvature of the cover body 1 changes, which improves the practicability, and the front positioning column 73 and the rear positioning column 72 are provided with an annular groove for preventing the second connecting plate 97 and the first connecting plate from being separated.

[0028] The side of the front cover 11 adjacent to the front positioning column 73 is sequentially provided with a welding gun clamping piece 2 and a drainage cover 3 from top to bottom, the front cover 11 is provided with an exhaust hole 5 which is in communication with the drainage cover 3, the welding gun clamping piece 2 on the front cover 11 is used for fixing a welding gun, which facilitates welding operation, and the drainage cover 3 cooperates with the exhaust hole 5 to discharge the waste gas generated in the welding process out of the cover body 1, thereby ensuring that the gas environment of the welding area is pure.

[0029] The outer side of the rear cover 12 is provided with an argon gas inlet pipe 4, the outer side of the middle trapezoidal cover 13 is fixedly connected with a handle 8, and the handle 8 on the outer side of the middle trapezoidal cover 13 facilitates the operator to move and adjust the position of the cover body 1, thereby meeting different welding requirements.

[0030] When the protective cover is used, the cover body 1 is attached to the titanium alloy pipe welding position through the sealing outer rubber ring 6, according to the different outer diameters of the titanium alloy pipe, the included angles between the multiple groups of trapezoidal covers 13 are different, thereby facilitating the attachment of the outer walls of titanium alloy pipes of different specifications, the right-angle positioning rod 77 on the sleeve ring 76 is inserted into the annular tooth groove 96 by rotating the butterfly bolt 74 to drive the limiting ring 75, and then the first disc 91 and the second disc 92 are positioned, the position of the first positioning column 71 is fixed with the rear positioning column 72 and the front positioning column 73;

[0031] When welding, argon is introduced through the argon inlet pipe 4, since the cover body 1 is composed of the front cover 11, the rear cover 12, the multiple groups of trapezoidal covers 13 and the multiple groups of flexible rubber plates 15, and the opening end is provided with the sealing outer rubber ring 6, the argon can fill the inside of the cover body 1, a relatively sealed space is formed, the external air is prevented from entering, an inert gas protection atmosphere is provided for the welding area, and the titanium alloy pipe is prevented from being oxidized in the welding process.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A protective shield for welding titanium alloy tubing, characterized by, Include: Cover (1), and the connecting assembly (7) installed on both sides of the cover (1), each group of the connecting assembly (7) is provided with a limiting assembly (9) for limiting the cover (1); The cover (1) comprises a front cover (11), a rear cover (12), a plurality of trapezoidal covers (13) and a plurality of flexible rubber plates (15), a plurality of the trapezoidal covers (13) are arranged between the front cover (11) and the rear cover (12), a plurality of the trapezoidal covers (13) are arranged at equal angles, a plurality of the trapezoidal covers (13) and a plurality of the flexible rubber plates (15) are arranged alternately, folding seams (14) for mounting the flexible rubber plate (15) are arranged between adjacent two groups of the trapezoidal cover (13), and the opening end of the front cover (11), the rear cover (12) and a plurality of the trapezoidal cover (13) is provided with a sealing outer rubber ring (6).

2. A protective shield for welding titanium alloy tubing according to claim 1, characterized in that: The connecting assembly (7) comprises a first positioning column (71), a rear positioning column (72) and a front positioning column (73), the first positioning column (71) is fixedly connected on one side of the trapezoidal cover (13) located in the middle, the rear positioning column (72) and the front positioning column (73) are arranged on one side of the rear cover (12) and the front cover (11) respectively, and one end of the first positioning column (71) is threadedly connected with a butterfly bolt (74).

3. A protective shield for welding titanium alloy tubing according to claim 2, wherein: The outer side of the butterfly bolt (74) is provided with a limiting ring (75), the outer side of the butterfly bolt (74) is provided with a sleeve ring (76) located on the limiting ring (75), and the outer side of the sleeve ring (76) is provided with three groups of right angle positioning rods (77).

4. A protective shield for welding titanium alloy tubing according to claim 3 wherein: The limiting assembly (9) comprises a first disc (91) and a second disc (92) rotatably arranged on the outer side of the first positioning column (71), a reinforcing pipe (93) is formed in one side of the first disc (91) and penetrates the three groups of right angle positioning rods (77), an annular tooth groove (96) is formed in one side of the second disc (92), and one end of each of the three groups of right angle positioning rods (77) is provided with a protrusion (78) matched with the annular tooth groove (96).

5. A protective shield for welding titanium alloy tubing according to claim 4 wherein: The outer side of the first disc (91) is integrally formed with a first connecting plate (94), a first guide hole (95) is formed in one side of the first connecting plate (94) and is slidably provided with a second connecting column, and the outer side of the second disc (92) is integrally formed with a second connecting plate (97), a second guide hole (98) is formed in one side of the second connecting plate (97) and is slidably provided with the front positioning column (73).

6. A protective shield for welding titanium alloy tubing according to claim 5 wherein: The side adjacent to the front positioning column (73) of the front cover (11) is sequentially provided with a welding gun clamping piece (2) and a drainage cover (3) from top to bottom, and an exhaust hole (5) is formed in the front cover (11) and is in communication with the drainage cover (3).

7. A protective shield for welding titanium alloy tubing according to claim 6 wherein: The outer side of the rear cover (12) is provided with an argon gas inlet pipe (4), and the outer side of the trapezoidal cover (13) located in the middle is fixedly connected with a handle (8).

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