Carbon steel pipeline welding joint reinforcing structure

Abstract

The utility model discloses a carbon steel pipeline welding joint reinforcing structure which is characterized in that a second carbon steel pipeline comprises a second pipe body, the outer wall of the second pipe body is connected with a second flange plate in a sliding mode, and one face of the second flange plate is fixedly connected with an extending cylinder located on the outer side of the second pipe body; the side, away from the second flange plate, of the extending cylinder is fixedly connected with an end cylinder, the inner side of the end cylinder is connected with the outer wall of the second pipe body in a sleeving and sliding mode, a plurality of inner threaded holes are formed in the outer surface of the end cylinder and arranged around the outer surface of the end cylinder at equal intervals, and positioning grooves are further symmetrically formed in the outer wall of the end cylinder. All the positioning grooves are consistent with the whole second pipe body in the length direction, after the pipelines are in butt joint and welded, the second flange plate can be driven to move and make contact with and be fixed to the first flange plate, then the second flange plate and the carbon steel pipeline assembly are fixed, and then the connecting strength of the welded pipelines is improved; and the influence of vibration in the external environment on the welding position is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, specifically to a reinforcement structure for welded joints of carbon steel pipelines. Background Technology

[0002] Carbon steel pipes are tubular products made of carbon steel and are widely used in industrial, construction and civil facilities to transport fluids or gases. Carbon steel pipes are connected by welding joints to form a continuous and sealed pipeline system, ensuring the safe and efficient transmission of fluids or gases.

[0003] In certain working environments, such as near mechanical equipment, carbon steel pipelines may be subject to continuous vibration. Long-term vibration can lead to problems such as loosening of welded joints and fatigue damage, which in turn affects the sealing and stability of the pipeline system. To address these issues, a reinforcement structure for welded joints of carbon steel pipelines is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is as follows: long-term vibration can lead to problems such as loosening of the joint weld and fatigue damage, which in turn affects the sealing and stability of the pipeline system.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A reinforcement structure for a welded joint of a carbon steel pipe includes a first carbon steel pipe, and a second carbon steel pipe is provided on one side of the first carbon steel pipe.

[0007] The carbon steel pipe 2 includes a pipe body 2, a flange 2 is slidably connected to the outer wall of the pipe body 2, an extension cylinder is fixedly connected to one side of the flange 2 and located outside the pipe body 2, an end cylinder is fixedly connected to the side of the extension cylinder away from the flange 2, and the inner side of the end cylinder is sleeved and slidably connected to the outer wall of the pipe body 2.

[0008] The outer surface of the end cylinder is provided with a plurality of internal threaded holes, and each of the internal threaded holes is arranged at equal intervals around the outer surface of the end cylinder.

[0009] The outer wall of the end tube is also symmetrically provided with positioning grooves, and each positioning groove is consistent with the length of the tube body.

[0010] As a further embodiment of this utility model: a fixing frame is fixedly connected to the outer wall of the second tube body, and positioning blocks are symmetrically fixedly connected to the inner wall of the fixing frame. The outer walls of the two positioning blocks are slidably connected to the inner side of the positioning groove.

[0011] As a further embodiment of this utility model: the inner side of the fixed frame is slidably connected to the end cylinder, the outer wall side of the fixed frame is in active contact with the flange, and the outer surface of the fixed frame is also provided with a number of through holes, each of the through holes and the adjacent internal threaded holes are located on the same horizontal straight line.

[0012] As a further embodiment of this utility model: a welding bevel is connected to the end of the pipe body 2, and a plurality of flange holes 2 are opened on the surface of the flange 2, each of the flange holes 2 being arranged equidistantly around the pipe body 2, and a sealing ring 2 is also fixedly connected to the side of the flange 2 near the extension cylinder.

[0013] As a further embodiment of this utility model: the carbon steel pipe includes a pipe body, a welding bevel is connected to the end of the pipe body, a flange is fixedly connected to the outer wall of the pipe body, a plurality of flange holes are opened on the surface of the flange, the flange holes are arranged equidistantly around the pipe body, and a sealing ring is fixedly connected to the side of the flange near the welding bevel.

[0014] As a further embodiment of this utility model: the outer diameter and inner diameter of the first pipe body and the second pipe body are the same, the first welding bevel abuts against the second welding bevel, the surface of the first flange abuts against the surface of the second flange, and each of the first flange holes is aligned with the second flange hole.

[0015] As a further embodiment of this utility model: each of the through holes is internally connected with a bolt, and the end of the bolt is also threadedly connected to the internal threaded hole.

[0016] The beneficial effects of this utility model are:

[0017] (1) This utility model sets a fixed flange one at one end of a carbon steel pipe and a movable flange two at the other end. After the pipe is connected and welded, the flange two can be moved to contact and fix with the flange one. Then the flange two is fixed to the carbon steel pipe assembly, thereby improving the connection strength of the pipe after welding and reducing the impact of vibration in the external environment on the weld.

[0018] (2) After flange two moves and is fixed to flange one, the extension cylinder on the side of flange two covers the outside of the welding point of carbon steel pipe, thereby isolating and protecting it from external rainwater or other corrosive substances directly contacting the welding point, which helps to extend the service life of the pipe after welding. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the medium carbon steel pipe of this utility model;

[0022] Figure 3 This is a schematic diagram of the integral structure of a medium carbon steel pipe according to this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the fixed frame in this utility model;

[0024] Figure 5 This is a schematic diagram of the external structure of the extension tube in this utility model;

[0025] Figure 6 This is a side view of the fixed frame structure in this utility model.

[0026] In the diagram: 1. Carbon steel pipe one; 101. Pipe body one; 102. Flange one; 103. Flange hole one; 104. Sealing ring one; 105. Welding bevel one; 2. Carbon steel pipe two; 201. Pipe body two; 202. Flange two; 203. Flange hole two; 204. Sealing ring two; 205. Welding bevel two; 206. Extension tube; 207. End tube; 208. Internal threaded hole; 209. Positioning groove; 210. Fixing frame; 211. Through hole; 212. Positioning block; 213. Bolt. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1-6As shown, a reinforcement structure for a welded joint of carbon steel pipe includes a carbon steel pipe 1, and a carbon steel pipe 2 is provided on one side of the carbon steel pipe 1. The carbon steel pipe 2 includes a pipe body 201, a flange 202 is slidably connected to the outer wall of the pipe body 201, and an extension cylinder 206 is fixedly connected to one side of the flange 202 and located outside the pipe body 201. An end cylinder 207 is fixedly connected to the side of the extension cylinder 206 away from the flange 202. The inner side of the end cylinder 207 is sleeved and slidably connected to the outer wall of the pipe body 201. In the middle, the outer surface of the end cylinder 207 is provided with a number of internal threaded holes 208, and each internal threaded hole 208 is equidistantly arranged around the outer surface of the end cylinder 207; the outer wall of the end cylinder 207 is also symmetrically provided with positioning grooves 209, each positioning groove 209 being consistent with the length direction of the tube body 201 as a whole; the outer wall of the tube body 201 is also fixedly connected with a fixing frame 210, and the inner wall of the fixing frame 210 is symmetrically fixedly connected with positioning blocks 212, the outer walls of the two positioning blocks 212 being slidably connected to the inner side of the positioning grooves 209 respectively, such as Figures 5-6 As shown, the positioning groove 209 cooperates with the positioning block 212 to prevent the end cylinder 207 from rotating within the fixed frame 210, so that the flange hole 203 will not shift around the carbon steel pipe 2.

[0029] The inner side of the fixed frame 210 is slidably connected to the end cylinder 207, and the outer side of the fixed frame 210 is in movable contact with the flange 202. Several through holes 211 are also provided on the outer surface of the fixed frame 210. Each through hole 211 and the adjacent internal threaded hole 208 are located on the same horizontal straight line. Figure 2 , Figure 4 As shown, the through hole 211 is elongated to facilitate alignment of the inner side of the through hole 211 with the internal threaded hole 208;

[0030] The end of the pipe body 201 is connected to a welding bevel 205. The surface of the flange 202 has several flange holes 203, all equidistantly arranged around the pipe body 201. A sealing ring 204 is also fixedly connected to the side of the flange 202 near the extension cylinder 206. The carbon steel pipe 1 includes a pipe body 101, the end of which is connected to a welding bevel 105. A flange 102 is fixedly connected to the outer wall of the pipe body 101. The surface of the flange 102 has several flange holes 103, equidistantly arranged around the pipe body 101. A sealing ring 104 is also fixedly connected to the side of the flange 102 near the welding bevel 105. Figures 2-3 As shown, sealing ring 204 and sealing ring 104 are both made of rubber. After flange 202 and flange 102 are tightly attached, the sealing rings reduce the connection gap and improve the sealing performance.

[0031] Pipe body 101 and pipe body 201 have the same outer and inner diameters, and welding bevel 105 abuts against welding bevel 205. Flange 102 abuts against the surface of flange 202. Each flange hole 103 is aligned with flange hole 203. Each through hole 211 is internally connected with a bolt 213, and the end of the bolt 213 is also connected to the internal thread of the internal threaded hole 208. Figures 2-3 As shown, the welding bevel allows the welding heat source to penetrate deep into the root of the weld, ensuring complete penetration and forming a reliable welded connection.

[0032] The working principle of this utility model:

[0033] When connecting carbon steel pipe 1 and carbon steel pipe 2, ensure that flange hole 103 and the adjacent flange hole 203 are on the same straight line. Align welding bevel 105 with welding bevel 205 and weld the connection gap. After welding, move flange 202 until it abuts against flange 102. Then, connect and lock the external fasteners through flange hole 103 and flange hole 203. At this time, the inside of through hole 211 is also aligned with the adjacent internal thread hole 208. Screw bolt 213 into internal thread hole 208 until the end of bolt 213 is tightly against the outside of through hole 211. This will fix the outer extension cylinder 206 relative to the fixing frame 210 and pipe body 201.

[0034] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A reinforced structure for a welded joint of a carbon steel pipe, comprising a carbon steel pipe (1), wherein a carbon steel pipe (2) is provided on one side of the carbon steel pipe (1). Its features are, The carbon steel pipe 2 (2) includes a pipe body 2 (201), and a flange 2 (202) is slidably connected to the outer wall of the pipe body 2 (201). An extension cylinder (206) is also fixedly connected to one side of the flange 2 (202) and located outside the pipe body 2 (201). An end cylinder (207) is fixedly connected to the side of the extension cylinder (206) away from the flange 2 (202). The inner side of the end cylinder (207) is sleeved and slidably connected to the outer wall of the pipe body 2 (201). The outer surface of the end cylinder (207) is provided with a plurality of internal threaded holes (208), and each of the internal threaded holes (208) is arranged at equal intervals around the outer surface of the end cylinder (207); The outer wall of the end tube (207) is also symmetrically provided with positioning grooves (209), and each positioning groove (209) is consistent with the length direction of the tube body (201).

2. The carbon steel pipe welded joint reinforcement structure according to claim 1, characterized in that, The outer wall of the second tube (201) is also fixedly connected to a fixed frame (210), and the inner wall of the fixed frame (210) is symmetrically fixedly connected to a positioning block (212). The outer walls of the two positioning blocks (212) are respectively slidably connected to the inner side of the positioning groove (209).

3. The carbon steel pipe welded joint reinforcement structure according to claim 2, characterized in that, The inner side of the fixed frame (210) is slidably connected to the end cylinder (207), and the outer side of the fixed frame (210) is in contact with the flange (202). The outer surface of the fixed frame (210) is also provided with several through holes (211), and each of the through holes (211) and the adjacent internal threaded holes (208) are located on the same horizontal straight line.

4. The carbon steel pipe welded joint reinforcement structure according to claim 3, characterized in that, The end of the pipe body (201) is connected to a welding bevel (205). The surface of the flange (202) is provided with several flange holes (203). Each flange hole (203) is arranged equidistantly around the pipe body (201). A sealing ring (204) is also fixedly connected to the side of the flange (202) near the extension cylinder (206).

5. The carbon steel pipe welded joint reinforcement structure according to claim 4, characterized in that, The carbon steel pipe (1) includes a pipe body (101), a welding bevel (105) is connected to the end of the pipe body (101), a flange (102) is fixedly connected to the outer wall of the pipe body (101), a plurality of flange holes (103) are opened on the surface of the flange (102), the flange holes (103) are equidistantly arranged around the pipe body (101), and a sealing ring (104) is also fixedly connected to the side of the flange (102) near the welding bevel (105).

6. The carbon steel pipe welded joint reinforcement structure according to claim 5, characterized in that, The outer and inner diameters of the first pipe body (101) and the second pipe body (201) are the same, and the first welding groove (105) abuts against the second welding groove (205), the first flange (102) abuts against the surface of the second flange (202), and each of the first flange holes (103) is aligned with the second flange hole (203).

7. The carbon steel pipe welded joint reinforcement structure according to claim 6, characterized in that, Each of the through holes (211) is connected to a bolt (213), and the end of the bolt (213) is also threaded into the internal threaded hole (208).

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