Stainless steel pipe flange connecting structure

Abstract

The utility model discloses a stainless steel pipe flange connection structure, and relates to the technical field of stainless steel pipe connection, in particular to a stainless steel pipe flange connection structure which comprises a first butt joint pipe and a second butt joint pipe, butt joint rings are sleeved at the tail ends of the first butt joint pipe and the second butt joint pipe, and a first flange plate is mounted at the tail end of the first butt joint pipe. The tail end of the first butt joint pipe is provided with a first flange plate, the tail end of the second butt joint pipe is provided with a second flange plate, the tail end of the first flange plate and the tail end of the second flange plate are fixedly provided with installation rings, the first flange plate and the second flange plate are sleeved with semi-arc-shaped reinforcing pieces respectively, and movable frames are installed in the reinforcing pieces. The two flange plates are connected through the butt joint ring with the threads, when the stainless steel pipe is disassembled and the flange plates are replaced, the pipeline does not need to be cut off for reconnection, operation is convenient, maintenance and other work are facilitated, the two sawtooth-shaped waterproof gaskets are extruded through the connection pressure of the two flange plates, and the connection tightness between the two sections of pipelines is improved; and the possibility of water leakage and gas leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel pipe connection, in particular to a stainless steel pipe flange connection structure. Background Art

[0002] Stainless steel pipe is a common and important piping material in life. Due to its advantages such as corrosion resistance, high strength and long life, it is widely used in various production fields and has become the first choice for many industries.

[0003] In order to adapt to the different needs of different industries and application scenarios for stainless steel water pipes, multiple sections of stainless steel pipes can be connected to make the stainless steel pipes into various lengths. In order to ensure the tightness of the connection between the stainless steel pipes and avoid water leakage, air leakage and other phenomena, flange connections are usually used between stainless steel pipes.

[0004] However, at present, flanges are usually welded to stainless steel pipes, which results in a large workload when the stainless steel pipes need to be disassembled and repaired, and the joints of stainless steel pipes are mostly rigid connections, which results in poor impact resistance of the pipe joints and makes them easily broken by external impact. Utility Model Content

[0005] The utility model aims to solve the defects in the prior art and proposes a stainless steel pipe flange connection structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A stainless steel pipe flange connection structure includes a first butt joint pipe and a second butt joint pipe, the ends of the first butt joint pipe and the second butt joint pipe are both sleeved with butt rings, the end of the first butt joint pipe is installed with a first flange plate, the end of the second butt joint pipe is installed with a second flange plate, the ends of the first flange plate and the second flange plate are both fixedly installed with mounting rings, the outer parts of the first flange plate and the second flange plate are respectively sleeved with a semi-arc-shaped reinforcement piece on the upper and lower parts, and the interior of the reinforcement piece is installed with a movable frame.

[0008] Furthermore, the two docking rings are respectively welded and fixedly installed on the ends of the outer surfaces of the first docking tube and the second docking tube, the first flange and the second flange are respectively threadedly connected to the outer surfaces of the two docking rings, and rubber gaskets are fixedly installed inside the first flange and the second flange, and the surfaces of the rubber gaskets are respectively fitted with the ends of the first docking tube and the second docking tube.

[0009] Furthermore, serrated waterproof gaskets are fixedly installed at the ends of the first flange and the second flange, and the serrations of the two waterproof gaskets are in alignment, a plurality of mounting holes are provided on the surface of the mounting ring, and the positions and sizes of the mounting holes of the first flange and the second flange correspond one to one, fixing bolts are threadedly connected between the mounting holes, and a fixing head is threadedly connected to the end of the fixing bolts, and the first flange and the second flange are fixedly connected by the fixing bolts.

[0010] Furthermore, an arc-shaped reserved groove is opened on the inner surface of the reinforcement, and the two movable frames are slidably installed on both sides of the inner surface of the reserved groove. A plurality of spring rods are fixedly installed on the inner top surface of the reserved groove, and the ends of the spring rods are fixedly connected to the top of the movable frame.

[0011] Furthermore, reinforcement gaskets are fixedly installed at both ends of the two reinforcements, and connecting blocks are fixedly installed at both ends of the two reinforcements. Connecting holes are provided on the surfaces of the connecting blocks. The connecting holes of the upper and lower reinforcements correspond to each other one by one, and connecting bolts are threadedly connected to the upper and lower connecting holes. The two reinforcements are fixedly connected by the connecting bolts.

[0012] Furthermore, the distance between the two movable frames inside the reinforcement member is greater than the length of the fixing bolt, and the lower surfaces of the two movable frames are respectively fitted with the outer surfaces of the first butt joint pipe and the second butt joint pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Use the threaded butt ring to connect the two flanges. When dismantling the stainless steel pipe to replace the flange, there is no need to cut off the pipeline and reconnect it. It is easy to operate and facilitate maintenance.

[0015] 2. Use the pressure of the two flange connections to squeeze the two serrated waterproof gaskets to increase the tightness of the connection between the two pipe sections and reduce the possibility of water leakage and air leakage;

[0016] 3. After the pipeline is installed, use reinforcements to wrap the joints up and down. When the pipeline joints are hit by external impacts, the movable frame and spring rod provide buffering for the joints, thereby increasing the service life of the pipeline connection and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0018] Figure 1 It is an overall schematic diagram of the utility model;

[0019] Figure 2 It is a partially enlarged schematic diagram of the reinforcement member of the utility model;

[0020] In the figure: 1. first butt joint; 2. second butt joint; 3. first flange; 4. second flange; 5. reinforcement; 6. connecting block; 7. movable frame; 8. butt joint ring; 9. rubber gasket; 10. mounting hole; 11. fixing bolt; 12. fixing head; 13. waterproof gasket; 14. connecting hole; 15. connecting bolt; 16. mounting ring; 17. reinforcement gasket; 18. reserved groove; 19. spring rod. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention;

[0022] Reference Figure 1-2 A stainless steel pipe flange connection structure includes a first butt joint pipe 1 and a second butt joint pipe 2. The ends of the first butt joint pipe 1 and the second butt joint pipe 2 are both sleeved with butt rings 8, the end of the first butt joint pipe 1 is installed with a first flange 3, the end of the second butt joint pipe 2 is installed with a second flange 4, the ends of the first flange 3 and the second flange 4 are both fixedly installed with mounting rings 16, the outer parts of the first flange 3 and the second flange 4 are respectively sleeved with a semi-arc reinforcement 5 on the upper and lower parts, and the interior of the reinforcement 5 is installed with a movable frame 7.

[0023] The two docking rings 8 are respectively welded and fixedly installed on the ends of the outer surfaces of the first docking tube 1 and the second docking tube 2. The first flange 3 and the second flange 4 are respectively threadedly connected to the outer surfaces of the two docking rings 8. If the flange needs to be replaced, there is no need to remove the entire pipeline. Only the first flange 3 and the second flange 4 need to be unscrewed to inspect or replace the connection between the first docking tube 1 and the second docking tube 2. Rubber gaskets 9 are fixedly installed inside the first flange 3 and the second flange 4. The surfaces of the rubber gaskets 9 are respectively fitted with the ends of the first docking tube 1 and the second docking tube 2, thereby improving the tightness of the connection between the first docking tube 1 and the second docking tube 2 and avoiding water and air leakage at the joints.

[0024] The ends of the first flange 3 and the second flange 4 are fixedly installed with serrated waterproof gaskets 13, and the serrations of the two waterproof gaskets 13 are matched. When the first flange 3 and the second flange 4 are installed, the two waterproof gaskets 13 are squeezed toward the middle, and the serrations of the waterproof gaskets 13 are mutually engaged and squeezed, thereby improving the connection tightness of the first flange 3 and the second flange 4. A plurality of mounting holes 10 are provided on the surface of the mounting ring 16. The positions and sizes of the mounting holes 10 of the first flange 3 and the second flange 4 correspond to each other. Fixing bolts 11 are threadedly connected between the mounting holes 10, and the ends of the fixing bolts 11 are threadedly connected with fixing heads 12. The first flange 3 and the second flange 4 are fixedly connected by the fixing bolts 11. After the fixing bolts 11 are passed through the two mounting holes 10 and tightened, the fixing heads 12 are screwed into the fixing bolts 11 opposite to each other to firmly connect the ends thereof, thereby reducing the probability of the fixing bolts 11 falling off due to use or pipeline shaking.

[0025] An arc-shaped reserved groove 18 is provided on the inner surface of the reinforcement 5, and two movable frames 7 are slidably installed on both sides of the inner surface of the reserved groove 18. A plurality of spring rods 19 are fixedly installed on the inner top surface of the reserved groove 18. The ends of the spring rods 19 are fixedly connected to the top of the movable frame 7. When the reinforcement 5 is impacted from the outside, the spring rods 19 can reduce part of the impact force and reduce the impact of the external impact on the connection between the first butt joint 1 and the second butt joint 2.

[0026] Reinforcement gaskets 17 are fixedly installed at both ends of the two reinforcement members 5, and connecting blocks 6 are fixedly installed at both ends of the two reinforcement members 5. Connecting holes 14 are opened on the surfaces of the connecting blocks 6. The connecting holes 14 of the upper and lower reinforcement members 5 correspond to each other one by one, and the upper and lower connecting holes 14 are internally threadedly connected with connecting bolts 15. The two reinforcement members 5 are fixedly connected by the connecting bolts 15.

[0027] The distance between the two movable frames 7 inside the reinforcement 5 is greater than the length of the fixing bolt 11 , and the lower surfaces of the two movable frames 7 are respectively in contact with the outer surfaces of the first butt joint 1 and the second butt joint 2 to prevent the reinforcement 5 from affecting the connection of the fixing bolt 11 .

[0028] Working principle: When using this stainless steel pipe flange connection structure, the two docking rings 8 are welded and fixed to the ends of the outer surfaces of the first butt tube 1 and the second butt tube 2, respectively, and then the first flange 3 and the second flange 4 are screwed in respectively. After the fixing bolt 11 is passed through the two mounting holes 10 and tightened, the fixing head 12 is screwed into the fixing bolt 11 to connect its ends firmly, thereby reducing the probability of the fixing bolt 11 falling off due to use or pipe shaking. When the first flange 3 and the second flange 4 are installed, the two waterproof gaskets 13 are squeezed toward the middle, and the serrations of the waterproof gaskets 13 engage and squeeze each other, thereby improving the connection tightness of the first flange 3 and the second flange 4. The two reinforcement members 5 are pushed from top to bottom to the connection of the first flange 3 and the second flange 4, respectively. The lower surfaces of the two movable frames 7 are respectively fitted with the outer surfaces of the first butt tube 1 and the second butt tube 2. When the reinforcement member 5 is impacted on the outside, the spring rod 19 can reduce part of the impact force, thereby reducing the impact of external impact on the connection between the first butt tube 1 and the second butt tube 2.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A stainless steel pipe flange connection structure, comprising a first butt joint (1) and a second butt joint (2), characterized in that: The ends of the first butt joint pipe (1) and the second butt joint pipe (2) are both sleeved with a docking ring (8); the end of the first butt joint pipe (1) is installed with a first flange (3); the end of the second butt joint pipe (2) is installed with a second flange (4); the ends of the first flange (3) and the second flange (4) are both fixedly installed with a mounting ring (16); the outer parts of the first flange (3) and the second flange (4) are respectively sleeved with a semi-arc-shaped reinforcement member (5) on the upper and lower parts; and the interior of the reinforcement member (5) is installed with a movable frame (7).

2. A stainless steel pipe flange connection structure according to claim 1, characterized in that: The two butt joint rings (8) are respectively welded and fixedly installed on the outer surface ends of the first butt joint tube (1) and the second butt joint tube (2); the first flange (3) and the second flange (4) are respectively threadedly connected to the outer surfaces of the two butt joint rings (8); the first flange (3) and the second flange (4) are both fixedly installed with rubber gaskets (9) inside; the surfaces of the rubber gaskets (9) are respectively fitted with the ends of the first butt joint tube (1) and the second butt joint tube (2).

3. A stainless steel pipe flange connection structure according to claim 1, characterized in that: The ends of the first flange (3) and the second flange (4) are fixedly mounted with serrated waterproof gaskets (13), and the serrations of the two waterproof gaskets (13) are in alignment. A plurality of mounting holes (10) are provided on the surface of the mounting ring (16). The positions and sizes of the mounting holes (10) of the first flange (3) and the second flange (4) are in one-to-one correspondence. A fixing bolt (11) is threadedly connected between the mounting holes (10). The ends of the fixing bolts (11) are threadedly connected with a fixing head (12). The first flange (3) and the second flange (4) are fixedly connected via the fixing bolts (11).

4. A stainless steel pipe flange connection structure according to claim 1, characterized in that: The inner surface of the reinforcement member (5) is provided with an arc-shaped reserved groove (18), and the two movable frames (7) are slidably mounted on both sides of the inner surface of the reserved groove (18), and a plurality of spring rods (19) are fixedly mounted on the inner top surface of the reserved groove (18), and the ends of the spring rods (19) are fixedly connected to the top of the movable frame (7).

5. The stainless steel pipe flange connection structure according to claim 1, characterized in that: Reinforcement gaskets (17) are fixedly mounted at both ends of the two reinforcement members (5), and connection blocks (6) are fixedly mounted at both ends of the two reinforcement members (5), and connection holes (14) are provided on the surfaces of the connection blocks (6), the connection holes (14) of the upper and lower reinforcement members (5) correspond to each other one by one, and the upper and lower connection holes (14) are internally threadedly connected with connection bolts (15), and the two reinforcement members (5) are fixedly connected via the connection bolts (15).

6. A stainless steel pipe flange connection structure according to claim 3, characterized in that: The distance between the two movable frames (7) inside the reinforcement member (5) is greater than the length of the fixing bolt (11), and the lower surfaces of the two movable frames (7) are respectively in contact with the outer surfaces of the first butt joint pipe (1) and the second butt joint pipe (2).

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