Anti-deformation welding device for tee pipe

Abstract

The utility model relates to welding device technical field, concretely is a kind of tee pipeline anti-deformation welding device, including horizontal pipe, vertical pipe, bracket and 2 support frames;The middle part of horizontal pipe is equipped with V-shaped gap, and the end of vertical pipe is equipped with V-shaped sharp head, and sharp head is inserted in V-shaped gap;2 support frames are connected below the both ends of horizontal pipe;Bracket includes arc-shaped backing plate, and arc-shaped backing plate is located below V-shaped gap;The bottom of arc-shaped backing plate is fixedly connected with jack, and the bottom of jack is connected with cross bar, and the both ends of cross bar are sleeved with 2 annular belts, and the upper end of annular belt is sleeved on cross bar;By setting arc-shaped backing plate, annular belt, jack, cross bar, the horizontal pipe can be kept level in the welding process under the supporting action of arc-shaped backing plate and the tensioning action of annular belt, keep parallel state with cross bar, avoid horizontal pipe to produce bending at V-shaped gap.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically a welding device for preventing deformation of a three-way pipe. Background Technology

[0002] During the construction of nuclear power plants, nuclear-grade stainless steel pipes are required for fluid transportation, including some nuclear-grade stainless steel tee pipes. Existing tee pipes are formed by welding horizontal and vertical pipes. During welding, a V-shaped notch is cut in the middle of the horizontal pipe, and a V-shaped tip is cut at the end of the vertical pipe. The V-shaped tip and the V-shaped notch are welded together to fix them. The existing nuclear-grade stainless steel pipes have relatively thin walls, and stainless steel itself has a large coefficient of linear expansion, which makes it easy for deformation to occur at the pipe joints during welding, affecting the quality of the welded product. Utility Model Content

[0003] The main purpose of this utility model is to provide a deformation-resistant welding device for tee pipes, so as to solve the problem that deformation easily occurs at the pipe connection during the welding process of nuclear-grade stainless steel tee pipes in the prior art.

[0004] To achieve the above objectives, this utility model provides a three-way pipe anti-deformation welding device, including a horizontal pipe, a vertical pipe, a bracket, and two support frames; the horizontal pipe has a V-shaped notch in the middle, and the vertical pipe has a V-shaped tip at the end, which is inserted into the V-shaped notch; the two support frames are connected to the lower ends of the horizontal pipe; the bracket includes an arc-shaped support plate, which is located below the V-shaped notch; a jack is fixedly connected to the bottom of the arc-shaped support plate, and a horizontal bar is connected to the bottom of the jack. Two annular bands are sleeved at both ends of the horizontal bar, and the upper ends of the annular bands are sleeved on the horizontal bar.

[0005] Furthermore, it includes two internal support frames located inside the vertical tube near the pointed end, arranged in a cross shape; the internal support frames include turnbuckles and arc-shaped support plates fixedly connected to both ends of the turnbuckles.

[0006] Furthermore, the support frame includes a V-shaped bracket, with a wooden pad fixedly connected inside the V-shaped bracket, and a screw connected to the bottom of the V-shaped bracket, with the screw threadedly connected to the base frame.

[0007] This utility model, by setting up an arc-shaped support plate, an annular belt, a jack, and a crossbar, can keep the horizontal pipe horizontal and parallel to the crossbar during the welding process under the support of the arc-shaped support plate and the tension of the annular belt, thus preventing the horizontal pipe from bending at the V-shaped notch.

[0008] This utility model, by setting an internal support frame, can provide support inside the vertical pipe, so that the pipe wall near the welding point remains in a circular shape, preventing the inner diameter from decreasing or the ellipticity from increasing during the welding process.

[0009] This utility model uses a V-shaped bracket to support and position the horizontal pipe, and uses a wooden pad to prevent the pipe from being damaged. Attached Figure Description

[0010] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0011] Figure 1 This is a schematic diagram of the anti-deformation welding device for the tee pipe in the embodiment; Figure 2 This is a schematic diagram of the connection between the arc-shaped support plate and the crossbar in the embodiment; Figure 3 This is a schematic diagram showing the connection between the inner support frame and the vertical pipe in the embodiment; Figure 4 This is a schematic diagram of the structure at the V-shaped bracket in the embodiment; In the diagram: 1. Bracket; 101. Arc-shaped support plate; 102. Jack; 103. Crossbar; 104. Circular belt; 2. Support frame; 201. V-shaped bracket; 202. Wooden pad; 203. Screw; 204. Base frame; 3. Horizontal tube; 301. V-shaped notch; 4. Vertical tube; 401. Pointed end; 5. Inner support frame; 501. Turnbuckle; 502. Arc-shaped support plate. Detailed Implementation

[0012] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0013] like Figures 1 to 4 As shown, according to an embodiment of this utility model, a tee pipe anti-deformation welding device is provided, including a horizontal pipe 3, a vertical pipe 4, a bracket 1, and two support frames 2; the horizontal pipe 3 and the vertical pipe 4 are nuclear-grade stainless steel pipes with an inner diameter of 346.04 mm and a wall thickness of 4.78 mm. The horizontal pipe 3 has a V-shaped notch 301 in the middle, and the vertical pipe 4 has a V-shaped tip 401 at its end, which is inserted into the V-shaped notch 301; the two support frames 2 are connected to... The horizontal tube 3 is supported at both ends below; the bracket 1 includes an arc-shaped support plate 101, the top of which is provided with a rubber protective pad. The arc-shaped support plate 101 is located below the V-shaped notch 301 and supports the horizontal tube 3; a jack 102 is fixedly connected to the bottom of the arc-shaped support plate 101, and a crossbar 103 is connected to the bottom of the jack 102. Two annular belts 104 are sleeved at both ends of the crossbar 103, and the upper ends of the annular belts 104 are sleeved on the crossbar 103.

[0014] The anti-deformation welding device for the tee pipe also includes two inner support frames 5, which are located inside the vertical pipe 4 near the tip 401. The two inner support frames 5 are arranged in a cross shape. The inner support frame 5 includes a turnbuckle 501 and an arc-shaped support plate 502 fixedly connected to both ends of the turnbuckle 501. The arc-shaped support plate 502 presses against the inner wall of the vertical pipe 4.

[0015] The support frame 2 includes a V-shaped bracket 201, with a wooden pad 202 fixedly connected inside the V-shaped bracket 201. A screw 203 is connected to the bottom of the V-shaped bracket 201, and a base frame 204 is threadedly connected to the screw 203. The V-shaped bracket 201 supports and positions the horizontal pipe 3, and the wooden pad 202 prevents the pipe from being damaged. The height of the V-shaped bracket 201 can be adjusted by rotating the screw 203.

[0016] The working principle of this embodiment is as follows: Before welding, the jack 102 extends to keep the annular belt 104 taut, and the arc-shaped support plate 101 supports the horizontal tube 3. During welding, under the support of the arc-shaped support plate 101 and the tension of the annular belt 104, the horizontal tube 3 is kept horizontal and parallel to the crossbar 103 during the welding process, so as to avoid bending of the horizontal tube 3 at the V-shaped notch 301.

[0017] During welding, the inner support frame 2 provides support inside the vertical pipe 4, keeping the pipe wall of the vertical pipe 4 near the welding point in a circular shape, thus preventing the inner diameter from decreasing or the ellipticity from increasing during the welding process.

[0018] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A deformation-resistant welding device for a tee pipe, characterized in that, It includes a horizontal tube (3), a vertical tube (4), a bracket (1), and two support frames (2); the horizontal tube (3) has a V-shaped notch (301) in the middle, and the vertical tube (4) has a V-shaped tip (401) at the end, which is inserted into the V-shaped notch (301); the two support frames (2) are connected to the lower ends of the horizontal tube (3); the bracket (1) includes an arc-shaped support plate (101), which is located below the V-shaped notch (301); a jack (102) is fixedly connected to the bottom of the arc-shaped support plate (101), and a horizontal bar (103) is connected to the bottom of the jack (102). Two annular belts (104) are sleeved at both ends of the horizontal bar (103), and the upper end of the annular belts (104) is sleeved on the horizontal bar (103).

2. The anti-deformation welding device for tee pipes as described in claim 1, characterized in that, It includes two inner support frames (5), which are located inside the vertical tube (4) near the tip (401) and are arranged in a cross shape. The inner support frame (5) includes a turnbuckle (501) and an arc-shaped support plate (502) fixedly connected to both ends of the turnbuckle (501).

3. The anti-deformation welding device for tee pipes as described in claim 1, characterized in that, The support frame (2) includes a V-shaped bracket (201), a wooden pad (202) is fixedly connected inside the V-shaped bracket (201), a screw (203) is connected to the bottom of the V-shaped bracket (201), and a base frame (204) is threadedly connected to the screw (203).

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