High strength shock resistant necked butt welded flange for petroleum piping

Abstract

The application relates to the technical field of flanges and discloses a high-strength impact-resistant necked butt-welding flange for a petroleum pipeline, which comprises a first flange and a second flange, and the first flange and the second flange are fixedly installed with flange necks on one side, and the flange comprises: a buffer assembly, which is used for reducing the impact on the welding joint of the first flange and the second flange when liquid in the petroleum pipeline flows; and a reinforcing assembly, which is used for reinforcing the connection between the first flange and the second flange; when liquid in the pipe body of the petroleum pipeline flows through the pipe body and the connecting joint of the first flange and the second flange, the first buffer plate and the second buffer plate rotate to unload the impact force of the liquid under the impact of the liquid, the burden of the welding joint between the first flange, the second flange and the pipe body is reduced, the welding joint between the first flange, the second flange and the pipe body is prevented from loosening due to long-time impact, and the connection strength of the pipe body and the first flange and the second flange is affected.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of flanges, and more particularly relates to a high-strength impact-resistant neck butt welding flange for petroleum pipelines. BACKGROUND

[0002] A flange is also called a flange flange plate or a flange. The flange is a part for connecting shafts to each other, and is used for connecting between pipe ends. The neck butt welding flange belongs to one of the flanges, and is a kind of butt welding flange with a tapered neck. When connecting a petroleum pipeline, the neck butt welding flange is used for welding, which can enhance the welding strength and sealing performance between the pipeline and the flange.

[0003] When liquid flows in the petroleum pipeline, the impact force caused by the liquid flowing through the connection between the neck butt welding flange and the pipeline increases the connection burden of the welding part between the neck butt welding flange and the pipeline. Long-term high-strength impact can cause the welding part between the neck butt welding flange and the pipeline to loosen, which affects the service life of the neck butt welding flange and the pipeline. SUMMARY

[0004] The application aims to provide a high-strength impact-resistant neck butt welding flange for petroleum pipelines, which reduces the impact force of liquid on the first flange and the second flange, prevents long-term impact from loosening the welding part between the first flange, the second flange and the pipe body, and affects the connection strength of the pipe body, the first flange and the second flange.

[0005] The technical solution adopted by the application is as follows: a high-strength impact-resistant neck butt welding flange for petroleum pipelines, comprising a first flange and a second flange, wherein the first flange and the second flange are fixedly installed with a flange neck on one side, and the flange comprises:

[0006] A buffer assembly is arranged for reducing the impact of the liquid flowing in the petroleum pipeline on the welding part of the first flange and the second flange.

[0007] A reinforcing assembly is arranged for reinforcing the connection between the first flange and the second flange.

[0008] A sealing support assembly is arranged for reducing the impact on the sealing between the first flange and the second flange.

[0009] The buffer assembly comprises a first buffer plate, a first mounting ring, a second buffer plate, a second mounting ring, a connecting groove, a first mounting groove, a first spring and a connecting column, a plurality of the first buffer plates are fixedly installed on the inner wall of the first mounting ring, a plurality of the second buffer plates are fixedly installed on the inner wall of the second mounting ring, the first mounting ring is rotatably installed on the inner wall of the flange neck on one side of the first flange, the second mounting ring is rotatably installed on the inner wall of the flange neck on one side of the second flange, a plurality of the connecting grooves are formed on one side of the first buffer plate, a plurality of the first mounting grooves are formed on one side of the second buffer plate, the first spring is fixedly installed on one end of the groove wall of the first mounting groove, the connecting column is fixedly installed on one end of the corresponding first spring, the connecting column is slidably installed on the groove wall of the corresponding first mounting groove, and the connecting column is clamped with the corresponding connecting groove.

[0010] Optionally, annular grooves are formed in the inner walls of the flange necks, and the first mounting ring and the second mounting ring are rotatably installed on the groove walls of the corresponding annular grooves.

[0011] Optionally, pipe bodies are welded to the outer walls of the flange necks on one side of the first flange and the second flange.

[0012] Optionally, a plurality of fixing holes are formed in the outer walls of the first flange and the second flange, fixing screws are installed on the inner walls of the fixing holes, and fixing nuts are installed on the outer walls of the fixing screws.

[0013] Optionally, the reinforcing assembly comprises a plurality of fixed frames, a first fixing member, a second fixing member and a notch, the first fixing member is rotatably installed on one side of the fixed frame, the notch is formed in the outer wall of the first fixing member, and the second fixing member is rotatably installed on the other side of the fixed frame.

[0014] Optionally, a plurality of reinforcing grooves are formed in the outer walls of the first flange and the second flange, the fixed frame is installed on the groove wall of the corresponding reinforcing groove, and the first fixing member and the second fixing member are located on one side of the first flange and the second flange respectively.

[0015] Optionally, limiting grooves are formed in the two sides of the fixed frame, rotating grooves are formed in the groove walls of the limiting grooves, connecting members are fixedly installed on the outer walls of the first fixing member and the second fixing member, the first fixing member and the second fixing member are rotatably installed on the groove wall of the corresponding rotating groove through the connecting members, a plurality of second mounting grooves are formed in the outer walls of the first fixing member and the second fixing member, a second spring is fixedly installed on one end of the groove wall of the second mounting groove, a fixing column is fixedly installed on one end of the second spring, the fixing column is slidably installed on the groove wall of the second mounting groove, and the fixing column is clamped with the corresponding fixing groove.

[0016] Optionally, the first flange and the second flange are provided with sealing grooves on one side, the sealing support assembly comprises a sealing piece and a sealing support piece, the sealing support piece is arc-shaped, the sealing piece is installed on the groove wall, and a plurality of sealing support pieces are fixedly installed on the inner wall of the sealing piece.

[0017] A manufacturing process of a high-strength impact-resistant necked butt welding flange for oil pipelines, comprising the following steps:

[0018] S1, heating raw materials to melting by a heating furnace, injecting the melted raw materials into a mold to form two segments of first flange and second flange rough castings;

[0019] S2, an annular groove is formed in the inner wall of the flange neck of the first flange and the second flange.

[0020] S3, the first mounting ring, the first buffer plate and the second mounting ring, the second buffer plate are respectively installed on the annular groove of the inner wall of the flange neck of the first flange and the second flange, the first flange and the second flange are welded into a complete flange, and the first flange and the second flange are polished.

[0021] The technical effects obtained by the present application are:

[0022] (1) When splicing the first buffer plate and the second buffer plate, the connecting column is pressed in the first mounting groove, the connecting groove is aligned, the first spring is used to support the connecting column to be clamped in the connecting groove, the splicing between the first buffer plate and the second buffer plate is facilitated, when the liquid in the pipe body of the oil pipeline flows through the connecting part of the pipe body and the first flange and the second flange, the liquid impacts the first buffer plate and the second buffer plate, the first buffer plate and the second buffer plate rotate to unload the impact force of the liquid, reduce the impact force of the liquid on the first flange and the second flange, reduce the burden of the welding part between the first flange and the second flange and the pipe body, prevent the welding part between the first flange and the second flange and the pipe body from loosening due to long-time impact, and affect the connection strength of the pipe body and the first flange and the second flange;

[0023] (2) The fixed frame is clamped in the reinforcing groove of the outer wall of the first flange and the second flange, the first fixing piece and the second fixing piece are rotated to press on one end of the fixed screw and the fixed nut, the fixed column is popped out to be clamped in the fixed groove on one side of the fixed frame, the first fixing piece and the second fixing piece are fixed, the fixed frame is fixed through the fixed screw and the fixed nut clamping the first fixing piece and the second fixing piece, the rubber pads are arranged on both sides of the inner wall of the fixed frame, the first flange and the second flange are located in the inner wall of the fixed frame, and the first flange and the second flange are compressed by the fixed frame to increase the connection strength of the first flange and the second flange;

[0024] (3) The first fixing member supports one end of the fixing screw, and the second fixing member supports one end of the fixing nut, corresponding to the fixing screw and the fixing nut, preventing the first flange and the second flange from vibrating to loosen the fixing screw and the fixing nut, and affecting the connection of the fixing screw and the fixing nut;

[0025] (4) The first flange and the second flange are sealed by the sealing member, and the plurality of sealing supports are in semicircular shape and supported in the inner wall of the sealing member, with the arc surface of the sealing support facing the inner wall of the first flange and the second flange, reducing the impact on the sealing member, increasing the impact resistance of the sealing member, making the sealing member not easy to deform, and increasing the service life of the sealing member. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0027] Figure 1 is a structural schematic view of the present application;

[0028] Figure 2 is a sectional view of the present application;

[0029] Figure 3 is a first buffer plate and a second buffer plate of the present application;

[0030] Figure 4 is a sectional view of the second buffer plate of the present application;

[0031] Figure 5 is a first fixing member installation view of the present application;

[0032] Figure 6 is a sectional view of the first fixing member of the present application;

[0033] Figure 7 is a sealing member view of the present application.

[0034] In the drawings, the components represented by each number are listed as follows:

[0035] 1, first flange; 2, second flange; 3, first buffer plate; 4, first mounting ring; 5, second buffer plate; 6, second mounting ring; 7, connecting groove; 8, first mounting groove; 9, first spring; 10, connecting column; 11, fixed frame; 12, first fixing part; 13, notch; 14, limiting groove; 15, rotating groove; 16, connecting part; 17, second fixing part; 18, second mounting groove; 19, second spring; 20, fixed column; 21, fixed groove; 22, sealing groove; 23, sealing part; 24, sealing support part; 25, fixing screw; 26, pipe body; 27, flange neck. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely 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 work fall within the scope of protection of the present application.

[0037] Please refer to Figures 1-7The application provides a high-strength impact-resistant neck butt welding flange for petroleum pipelines, which is applied to a flange, and the flange has a first flange 1 and a second flange 2, and the first flange 1 and the second flange 2 are fixedly installed with flange necks 27 on one side, and the flange comprises: a buffer assembly for reducing the impact on the welding joint of the first flange 1 and the second flange 2 when the liquid in the petroleum pipeline flows; a reinforcing assembly for reinforcing the connection between the first flange 1 and the second flange 2; a sealing support assembly for reducing the impact on the sealing between the first flange 1 and the second flange 2; the buffer assembly comprises a first buffer plate 3, a first mounting ring 4, a second buffer plate 5, a second mounting ring 6, a connecting groove 7, a first mounting groove 8 and a connecting column 10, a plurality of first buffer plates 3 are fixedly installed on the inner wall of the first mounting ring 4, a plurality of second buffer plates 5 are fixedly installed on the inner wall of the second mounting ring 6, the first mounting ring 4 is rotatably installed on the inner wall of the flange neck 27 on one side of the first flange 1, the second mounting ring 6 is rotatably installed on the inner wall of the flange neck 27 on one side of the second flange 2, a plurality of connecting grooves 7 are formed on one side of the first buffer plate 3, a plurality of first mounting grooves 8 are formed on one side of the second buffer plate 5, the connecting grooves 7 correspond in position to the first mounting grooves 8, the connecting column 10 is slidably installed on the groove wall corresponding to the first mounting groove 8, the inner wall of the flange neck 27 is formed with an annular groove, the first mounting ring 4 and the second mounting ring 6 are rotatably installed on the groove wall corresponding to the annular groove, a first spring 9 is fixedly installed on one end of the groove wall of the first mounting groove 8, the connecting column 10 is fixedly installed on one end of the corresponding first spring 9, and the connecting column 10 is engaged with the corresponding connecting groove 7; the first mounting ring 4 is rotatable in the inner wall of the flange neck 27 on the first flange 1, the second mounting ring 6 is rotatable in the inner wall of the flange neck 27 on the second flange 2, and the corresponding first buffer plate 3 and the second buffer plate 5 are connected to form an integral arc-shaped spiral plate, the first buffer plate 3 and the second buffer plate 5 are spliced together when the first flange 1 and the second flange 2 are connected, and the corresponding first buffer plate 3 and the second buffer plate 5 are fixed by inserting the connecting column 10 into the connecting groove 7, when the first buffer plate 3 and the second buffer plate 5 are spliced, the connecting column 10 is pressed in the first mounting groove 8, and after alignment with the connecting groove 7, the first spring 9 is used to support the connecting column 10 to be engaged into the connecting groove 7, facilitating the splicing between the first buffer plate 3 and the second buffer plate 5, when the liquid in the pipe body 26 of the petroleum pipeline flows through the connection between the pipe body 26 and the first flange 1 and the second flange 2, the liquid impacts the first buffer plate 3 and the second buffer plate 5, the first buffer plate 3 and the second buffer plate 5 rotate to unload the impact force of the liquid, reduce the impact force of the liquid on the first flange 1 and the second flange 2, reduce the burden of the welding joint between the first flange 1, the second flange 2 and the pipe body 26, prevent the welding joint between the first flange 1, the second flange 2 and the pipe body 26 from loosening due to long-term impact, and affect the connection strength of the pipe body 26 and the first flange 1 and the second flange 2.

[0038] In some embodiments, referring toFigure 1 、 Figure 5 The outer wall of the flange neck 27 on one side of the first flange 1 and the second flange 2 is welded with a pipe body 26, a plurality of fixing holes are formed on the outer wall of the first flange 1 and the second flange 2, and a fixing screw 25 is installed on the inner wall of the fixing hole, and a fixing nut is installed on the outer wall of the fixing screw 25; the first flange 1 and the second flange 2 are connected and fixed through the fixing screw 25 and the fixing nut.

[0039] In some embodiments, referring to Figure 1 、 Figure 5 、 Figure 6 The reinforcing assembly comprises a plurality of fixed frames 11, first fixing members 12, second fixing members 17 and notches 13, the first fixing members 12 are rotatably installed on one side of the fixed frame 11, the notches 13 are formed on the outer wall of the first fixing member 12, the second fixing members 17 are rotatably installed on the other side of the fixed frame 11, a plurality of reinforcing grooves are formed on the outer wall of the first flange 1 and the second flange 2, the fixed frame 11 is installed on the groove wall of the corresponding reinforcing groove, and the first fixing member 12 and the second fixing member 17 are located on one side of the first flange 1 and the second flange 2 respectively, the limiting grooves 14 are formed on both sides of the fixed frame 11, the rotating grooves 15 are formed on the groove wall of the limiting groove 14, the connecting members 16 are fixedly installed on the outer wall of the first fixing member 12 and the second fixing member 17, the first fixing member 12 and the second fixing member 17 are rotatably installed on the groove wall of the corresponding rotating groove 15 through the connecting member 16, a plurality of second installation grooves 18 are formed on the outer wall of the first fixing member 12 and the second fixing member 17, the second spring 19 is fixedly installed on one end of the groove wall of the second installation groove 18, the fixed column 20 is fixedly installed on one end of the second spring 19, the fixed column 20 is slidably installed on the groove wall of the second installation groove 18, a plurality of fixed grooves 21 are formed on one side of the fixed frame 11, and the fixed column 20 is engaged with the corresponding fixed groove 21; when the first flange 1 and the second flange 2 are connected, the reinforcing grooves on the outer wall of the first flange 1 and the second flange 2 are aligned, the fixed frame 11 is clamped into the reinforcing grooves on the outer wall of the first flange 1 and the second flange 2, the first fixing member 12 and the second fixing member 17 are rotated, the first fixing member 12 and the second fixing member 17 are pressed on one end of the fixing screw 25 and the fixing nut respectively, the second spring 19 in the first fixing member 12 and the second fixing member 17 supports the fixed column 20 to pop out and be clamped into the fixed groove 21 on one side of the fixed frame 11, the first fixing member 12 and the second fixing member 17 are fixed, the fixed frame 11 is fixed through the first fixing member 12 and the second fixing member 17 clamping the fixed frame 11, and the rubber pads are arranged on both sides of the inner wall of the fixed frame 11, the first flange 1 and the second flange 2 are located on the inner wall of the fixed frame 11, the first flange 1 and the second flange 2 are compressed through the fixed frame 11, and the connection strength of the first flange 1 and the second flange 2 is increased.

[0040] In this example, after the first fixing member 12 and the second fixing member 17 are fixed by the fixing column 20, the first fixing member 12 supports one end of the fixing screw 25, and the second fixing member 17 is supported at one end of the fixing nut, corresponding to the fixing screw 25 and the fixing nut, to prevent the first flange 1 and the second flange 2 from vibrating to loosen the fixing screw 25 and the fixing nut, thereby affecting the connection of the fixing screw 25 and the fixing nut.

[0041] In some embodiments, referring to Figure 7 , the first flange 1 and the second flange 2 are each provided with a sealing groove 22 on one side, and the sealing support assembly includes a sealing member 23 and a sealing support member 24, the sealing support member 24 is arc-shaped, the sealing member 23 is installed on the groove wall of the sealing groove 22, and the plurality of sealing support members 24 are fixedly installed on the inner wall of the sealing member 23; the sealing member 23 seals the connection between the first flange 1 and the second flange 2, and the plurality of sealing support members 24 are semi-circularly supported on the inner wall of the sealing member 23, the arc surface of the sealing support member 24 faces the inner wall of the first flange 1 and the second flange 2, reducing the impact on the sealing member 23, increasing the impact resistance of the sealing member 23, making the sealing member 23 not easy to deform, and increasing the service life of the sealing member 23.

[0042] The working process and principle of the present application are as follows: when the first flange 1 and the second flange 2 are connected, the reinforcing grooves on the outer walls of the first flange 1 and the second flange 2 are aligned, the fixing frame 11 is clamped into the reinforcing grooves on the outer walls of the first flange 1 and the second flange 2, the first fixing member 12 and the second fixing member 17 are rotated to press on one end of the fixing screw 25 and the fixing nut respectively, the second spring 19 inside the first fixing member 12 and the second fixing member 17 supports the fixing column 20 to pop out and be clamped into the fixing groove 21 on one side of the fixing frame 11, thereby fixing the first fixing member 12 and the second fixing member 17, and the fixing screw 25 and the fixing nut clamp the first fixing member 12 and the second fixing member 17 to fix the fixing frame 11; when the liquid in the pipe body 26 of the oil pipeline flows through the connection between the pipe body 26 and the first flange 1 and the second flange 2, the liquid impacts the first buffer plate 3 and the second buffer plate 5, and the first buffer plate 3 and the second buffer plate 5 rotate to unload the impact force of the liquid.

[0043] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present application. The present application selects and describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. A high-strength impact-resistant weld neck flange for oil pipelines, the flange having a first flange (1) and a second flange (2), wherein a flange neck (27) is fixedly installed on one side of both the first flange (1) and the second flange (2), characterized in that, The flange includes: A buffer assembly is used to reduce the impact on the weld joint of the first flange (1) and the second flange (2) when the liquid flows inside the oil pipeline. A reinforcement assembly for reinforcing the connection between the first flange (1) and the second flange (2); A sealing support assembly for reducing the impact on the seal between the first flange (1) and the second flange (2); The buffer assembly includes a first buffer plate (3), a first mounting ring (4), a second buffer plate (5), a second mounting ring (6), a connecting groove (7), a first mounting groove (8), a first spring (9), and a connecting post (10). A plurality of the first buffer plates (3) are fixedly installed on the inner wall of the first mounting ring (4), and a plurality of the second buffer plates (5) are fixedly installed on the inner wall of the second mounting ring (6). The first mounting ring (4) is rotatably installed on the inner wall of the flange neck (27) on one side of the first flange (1), and the second mounting ring (6) is rotatably installed on... On the inner wall of the flange neck (27) on one side of the second flange (2), a plurality of connecting grooves (7) are opened on one side of the first buffer plate (3), a plurality of first mounting grooves (8) are opened on one side of the second buffer plate (5), the first spring (9) is fixedly installed on one end of the groove wall of the first mounting groove (8), the connecting column (10) is fixedly installed on one end of the corresponding first spring (9), the connecting column (10) is slidably installed on the groove wall of the corresponding first mounting groove (8), and the connecting column (10) is engaged with the corresponding connecting groove (7).

2. The high-strength impact-resistant weld neck flange for oil pipelines according to claim 1, characterized in that: The inner wall of the flange neck (27) is provided with an annular groove, and the first mounting ring (4) and the second mounting ring (6) are rotatably mounted on the corresponding annular groove wall.

3. The high-strength impact-resistant weld neck flange for oil pipelines according to claim 1, characterized in that: A pipe body (26) is welded to the outer wall of the flange neck (27) on one side of the first flange (1) and the second flange (2).

4. A high-strength impact-resistant weld neck flange for oil pipelines according to claim 1, characterized in that: The outer walls of the first flange (1) and the second flange (2) are provided with a plurality of fixing holes, and fixing screws (25) are installed on the inner walls of the fixing holes, and fixing nuts are installed on the outer walls of the fixing screws (25).

5. A high-strength impact-resistant weld neck flange for oil pipelines according to claim 1, characterized in that: The reinforcement component includes several fixed frames (11), a first fixing member (12), a second fixing member (17), and a slot (13). The first fixing member (12) is rotatably installed on one side of the fixed frame (11), the slot (13) is opened on the outer wall of the first fixing member (12), and the second fixing member (17) is rotatably installed on the other side of the fixed frame (11).

6. A high-strength impact-resistant weld neck flange for oil pipelines according to claim 5, characterized in that: The outer walls of the first flange (1) and the second flange (2) are provided with a plurality of reinforcing grooves. The fixing frame (11) is installed on the corresponding wall of the reinforcing groove, and the first fixing member (12) and the second fixing member (17) are respectively located on one side of the first flange (1) and the second flange (2).

7. A high-strength impact-resistant weld neck flange for oil pipelines according to claim 5, characterized in that: The fixed frame (11) has limit grooves (14) on both sides. The wall of the limit groove (14) has a rotating groove (15). The outer walls of the first fixing member (12) and the second fixing member (17) are fixedly installed with connectors (16). The first fixing member (12) and the second fixing member (17) are rotatably installed on the wall of the corresponding rotating groove (15) through the connectors (16). The outer walls of the first fixing member (12) and the second fixing member (17) are provided with several second mounting grooves (18). A second spring (19) is fixedly installed at one end of the wall of the second mounting groove (18). A fixing post (20) is fixedly installed at one end of the second spring (19). The fixing post (20) is slidably installed on the wall of the second mounting groove (18). The fixed frame (11) has several fixing grooves (21) on one side. The fixing post (20) engages with the corresponding fixing groove (21).

8. A high-strength impact-resistant weld neck flange for oil pipelines according to claim 1, characterized in that: The first flange (1) and the second flange (2) are provided with a sealing groove (22) on one side. The sealing support assembly includes a sealing element (23) and a sealing support element (24). The sealing support element (24) is arc-shaped. The sealing element (23) is installed on the groove wall of the sealing groove (22). Several sealing support elements (24) are fixedly installed on the inner wall of the sealing element (23).

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