High-strength stainless steel welded pipe processed by microwave sintering

Abstract

The utility model discloses a high-strength stainless steel welded pipe processed by microwave sintering, which belongs to the technical field of stainless steel welded pipes, and comprises a stainless steel welded pipe, the inner wall of the stainless steel welded pipe is fixedly connected with flow guide rings, and the flow guide rings are distributed on the inner wall of the stainless steel welded pipe at equal intervals; an inner protection pipe is fixedly connected to the surface of the stainless steel welded pipe, and a through hole is formed in the inner protection pipe. The through holes are distributed in the inner protection tube at equal intervals; the surface of the inner protection pipe is fixedly connected with one end of a supporting plate, and the other end of the supporting plate is fixedly connected with an outer protection pipe. The front view of the supporting plates is triangular, and the supporting plates are distributed on the surface of the inner protection pipe at equal intervals. According to the high-strength stainless steel welded pipe subjected to microwave sintering processing, through the arrangement of the supporting plates and the reinforcing ribs, the structural strength of the stainless steel welded pipe can be remarkably improved, meanwhile, deformation of the pipe due to overlarge local stress is prevented, the rigidity of the pipe wall is enhanced through the reinforcing ribs, and sinking or cracking of the pipe is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to stainless steel welded pipe technical field, concretely is a kind of high-strength stainless steel welded pipe of microwave sintering processing. BACKGROUND

[0002] Stainless steel welded pipe is hollow steel pipe made of steel or steel strip as raw material through coiling forming and welding process, with corrosion resistance, high temperature resistance, high strength, easy processing and other characteristics, widely used in industry, construction, environmental protection and other fields;Microwave sintering technology provides a new path for high-strength stainless steel welded pipe manufacturing, which is efficient, energy-saving and can improve material performance, especially suitable for fields with high requirements on material strength, density and corrosion resistance;When using stainless steel welded pipe, if the strength of stainless steel welded pipe is weak, deformation and fracture are likely to occur under external impact, thereby reducing the service life of stainless steel welded pipe.

[0003] In order to overcome the above-mentioned defects, the prior art (Chinese patent with application number CN202323629997.0 and application date of December 29, 2023) is a kind of high-strength stainless steel welded pipe, including outer tube and inner tube, the outer wall of the circumference of the inner tube is provided with a plurality of strip-shaped reinforcing ribs, and the strip-shaped reinforcing ribs are uniformly distributed, the outer side of the inner tube is provided with two annular reinforcing ribs, the outer wall of the circumference of the inner tube is fixedly connected with a plurality of first arched plates, and the first arched plates are fixed with the outer tube, the inner wall of the circumference of the outer tube is fixedly connected with a plurality of second arched plates, and the second arched plates are fixed with the inner tube, the two ends of the inner tube are fixedly connected with connecting flanges, and the upper surfaces of the two connecting flanges are provided with a plurality of connecting holes;Not only can improve the strength of stainless steel welded pipe, prolong the service life of stainless steel welded pipe, but also can improve the sealing property of stainless steel welded pipe, and can avoid the deviation of stainless steel welded pipe during installation, improve the stability of stainless steel welded pipe during installation.

[0004] Welding process can change the local geometry of welded pipe, and there is often excess height at the weld, that is, the weld is higher than the surface of the base material, when external force acts, stress line bends and concentrates in this area, thus stress concentration occurs;The above device cannot reduce the stress concentration of stainless steel welded pipe during work, which causes micro cracks in the inner part of stainless steel welded pipe, and with the continuous expansion of cracks, the effective bearing area of welded pipe gradually decreases, which leads to leakage of medium conveyed in the pipe. SUMMARY

[0005] The utility model discloses a microwave sintering processing's high strength stainless steel welded pipe to solve the problem that the stress concentration of stainless steel welded pipe cannot be reduced in the working time in the above background art, causes the tiny crack of stainless steel welded pipe inside, and along with the continuous expansion of crack, the effective bearing area of welded pipe gradually reduces, causes the medium leakage of pipe conveying.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a microwave sintering processing's high strength stainless steel welded pipe, including stainless steel welded pipe, the inner wall fixedly connected with the flow -guiding ring of stainless steel welded pipe, and the flow -guiding ring is distributed at the inner wall of stainless steel welded pipe equidistance, the surface fixedly connected with the inner protective tube of stainless steel welded pipe, and the through -hole is seted up in the inside of inner protective tube, the through -hole is distributed at the inside of inner protective tube equidistance.

[0007] The above structure design, through the flow -guiding ring and inner protective tube of setting, prolongs the service life of stainless steel welded pipe, and through reducing physical damage and chemical corrosion, the service life of stainless steel welded pipe is significantly prolonged, and the frequency of needing to replace due to pipeline damage is reduced, and maintenance and replacement cost are saved.

[0008] Preferably, one end of the inner protective tube is fixedly connected with a support plate, and the other end of the support plate is fixedly connected with an outer protective tube.

[0009] The above structure design, through the support plate and outer protective tube of setting, improves the protection of stainless steel welded pipe, when stainless steel welded pipe is impacted or stressed from outside, the outer protective tube first bears part of the external force, then the force is dispersed and transmitted through the support plate, which avoids that the stainless steel welded pipe is stressed too much at a single point, and reduces the risk of local deformation or damage.

[0010] Preferably, the support plate is triangular in the front view, and the support plates are equidistantly distributed on the surface of the inner protective tube.

[0011] The above structure design, through the support plate, when the outer protective tube is subjected to pressure, impact force and other loads from the outside, the triangular support plate can effectively transmit these forces to the inner protective tube and the stainless steel welded pipe, and the structure itself can remain stable and will not easily twist or bend, thereby providing reliable support and protection for the stainless steel welded pipe.

[0012] Preferably, the outer protective tube has a circular hole inside.

[0013] The above structure design, through the circular hole, when the outer protective tube is impacted from outside, the material around the circular hole can be elastically deformed to a certain extent, absorbing part of the impact force, thereby reducing the direct impact on the stainless steel welded pipe.

[0014] Preferably, the outer protective tube has a reinforcing rib fixedly connected to the surface thereof, and the upper surface of the reinforcing rib is arc-shaped.

[0015] The reinforcing rib can disperse the external pressure or impact force and transmit the force to a larger area, thereby improving the anti-deformation capacity of the outer protection pipe as a whole.

[0016] Preferably, a flange is fixedly connected to the outer side of the front end of the outer protection pipe, and a bolt connecting groove is formed in the interior of the flange.

[0017] The flange can help the construction personnel to fix two pipes or equipment with the flange by aligning the pipes or equipment and fixing the pipes or equipment by bolts passing through the bolt connecting groove of the flange, thereby greatly shortening the connecting time.

[0018] Preferably, a sealing ring is fixedly connected to the outer side of the front end of the stainless steel welded pipe.

[0019] The sealing ring can help to maintain the internal pressure of the pipe, prevent the pressure from being lost due to poor sealing at the connecting position, ensure the normal work of the pipe system, and reduce the safety hazards and economic losses caused by leakage.

[0020] Compared with the prior art, the microwave sintering processed high-strength stainless steel welded pipe has the beneficial effects that:

[0021] The microwave sintering processed high-strength stainless steel welded pipe can significantly improve the structural strength of the stainless steel welded pipe, prevent the pipe from being deformed due to excessive local stress, and enhance the rigidity of the pipe wall by the reinforcing rib, thereby effectively preventing the pipe from being concave or broken.

[0022] Further, the pipe can be prevented from being deformed or damaged when bearing a large external force, the guarantee capacity of the pipe for conveying internal medium is enhanced, and the service life of the entire pipe system is prolonged.

[0023] The microwave sintering processed high-strength stainless steel welded pipe can prolong the service life of the stainless steel welded pipe, reduce physical damage and chemical corrosion, significantly prolong the service life of the stainless steel welded pipe, and reduce the frequency of replacement due to pipe damage.

[0024] Further, the sealing ring can help to maintain the internal pressure of the pipe and reduce the safety hazards and economic losses caused by leakage.

[0025] (3) The microwave sintering processed high-strength stainless steel welded pipe can reduce the direct impact on the stainless steel welded pipe by the material around the circular hole being elastically deformed to a certain extent to absorb part of the impact force when the outer protection pipe is impacted from the outside. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 It is the utility model support plate and outer protection pipe connecting structure schematic drawing;

[0027] Fig. 2 It is the utility model outer protection pipe and round hole connecting structure schematic drawing;

[0028] Fig. 3 It is the utility model inner protection pipe and support plate connecting structure schematic drawing;

[0029] Fig. 4 It is the utility model stainless steel welded pipe and flow guide ring connecting structure schematic drawing;

[0030] Fig. 5 It is the utility model outer protection pipe and reinforcing rib connecting structure schematic drawing;

[0031] Fig. 6 It is the utility model bolt connection groove and flange connecting structure schematic drawing.

[0032] In the drawing: 1, stainless steel welded pipe;2, flow guide ring;3, inner protection pipe;4, support plate;5, outer protection pipe;6, flange;7, round hole;8, reinforcing rib;9, through hole;10, bolt connection groove;11, sealing ring. DETAILED DESCRIPTION

[0033] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0034] Embodiment one: by setting flow guide ring 2, inner protection pipe 3 and through hole 9, the stability of stainless steel welded pipe 1 is improved, as shown in Figs. 1-2 It includes stainless steel welded pipe 1, and the inner wall of stainless steel welded pipe 1 is fixedly connected with flow guide ring 2, and flow guide ring 2 is distributed at equal intervals on the inner wall of stainless steel welded pipe 1, and the surface of stainless steel welded pipe 1 is fixedly connected with inner protection pipe 3, and through hole 9 is arranged in inner protection pipe 3, and through hole 9 is distributed at equal intervals in inner protection pipe 3.

[0035] In the oil refining process, the staff will be fixed by the bolt connection groove 10 inside the flange 6 through the stainless steel welded pipe 1 and the external oil refining pipeline, and gradually and uniformly apply torque to ensure the uniformity of the sealing between the flanges 6, prevent leakage, and install along the direction of the flow guide ring 2 inside the stainless steel welded pipe 1 when connecting the stainless steel welded pipe 1, ensure the smooth and efficient flow of the crude oil inside the stainless steel welded pipe 1, reduce energy loss, and prolong the service life of the stainless steel welded pipe 1 by setting the inner protective pipe 3, significantly prolong the service life of the stainless steel welded pipe 1 by reducing physical damage and chemical corrosion, reduce the frequency of replacement due to pipeline damage, and save maintenance and replacement costs.

[0036] In this embodiment, unlike embodiment one, the strength of the stainless steel welded pipe 1 is improved by setting the support plate 4, the outer protective pipe 5 and the reinforcing rib 8, as shown in Figs. 3-4 One end of the support plate 4 fixedly connected to the surface of the inner protective pipe 3, and the other end of the support plate 4 fixedly connected to the outer protective pipe 5, the main view of the support plate 4 is a triangle, and the support plate 4 is distributed at equal intervals on the surface of the inner protective pipe 3, the outer protective pipe 5 is provided with a circular hole 7 inside, and the outer protective pipe 5 is fixedly connected with a reinforcing rib 8 on the surface, and the upper surface of the reinforcing rib 8 is arc-shaped.

[0037] When the outer protective pipe 5 is subjected to external pressure, impact force and other loads, the triangular support plate 4 can effectively transmit these forces to the inner protective pipe 3 and the stainless steel welded pipe 1, and the structure itself can remain stable and not easily twisted or bent, thereby providing reliable support and protection for the stainless steel welded pipe 1, and when the outer protective pipe 5 is subjected to external impact, the material around the circular hole 7 can be elastically deformed to a certain extent, absorbing part of the impact force, thereby reducing the direct impact on the stainless steel welded pipe 1, and by setting the reinforcing rib 8, when the outer protective pipe 5 is subjected to external pressure or impact force, the reinforcing rib 8 can disperse these forces and transmit them to a larger area, thereby improving the overall anti-deformation ability of the outer protective pipe 5.

[0038] In this embodiment, unlike embodiment two, the sealing performance of the stainless steel welded pipe 1 is improved by setting the flange 6, the bolt connection groove 10 and the sealing ring 11, as shown in Figs. 5-6 The flange 6 is fixedly connected to the outer side of the front end of the outer protective pipe 5, and the bolt connection groove 10 is provided inside the flange 6, and the sealing ring 11 is fixedly connected to the outer side of the front end of the stainless steel welded pipe 1.

[0039] Through the flange 6 arranged, the construction personnel only need to align two pipes or equipment with the flange 6, and fix through the bolt connection groove 10 on the flange 6 by the bolt, compared with other complex connection modes, the connection time is greatly shortened, and the sealing ring 11 helps to maintain the internal pressure of the pipe, prevents the pressure from being lost due to the sealing of the connection part being not tight, ensures the normal work of the pipe system, and reduces the safety hidden danger and economic loss caused by leakage.

[0040] The above is the working process of the whole device, and the contents not described in detail in the specification all belong to the prior art known to the person skilled in the art.

[0041] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-strength stainless steel welded pipe processed by microwave sintering, comprising a stainless steel welded pipe (1), a flow guide ring (2) is fixedly connected to the inner wall of the stainless steel welded pipe (1), and the flow guide rings (2) are distributed at equal intervals on the inner wall of the stainless steel welded pipe (1). Characterized in that: The surface of the stainless steel welded pipe (1) is fixedly connected with an inner protective tube (3), and a through hole (9) is formed in the inner protective tube (3); The through holes (9) are distributed at equal intervals in the inner protective tube (3).

2. A high strength, stainless steel welded pipe processed by microwave sintering according to claim 1, characterized in that: One end of the inner protective tube (3) is fixedly connected with a support plate (4), and the other end of the support plate (4) is fixedly connected with an outer protective tube (5).

3. A high strength, stainless steel welded pipe processed by microwave sintering according to claim 2, characterized in that: The front view of the support plate (4) is triangular, and the support plates (4) are distributed at equal intervals on the surface of the inner protective tube (3).

4. A high strength, stainless steel, welded pipe, processed by microwave sintering, according to claim 3, characterized in that: A circular hole (7) is formed in the inner protective tube (5).

5. A high strength, stainless steel, welded pipe, processed by microwave sintering, according to claim 4, characterized by: The surface of the outer protective tube (5) is fixedly connected with a reinforcing rib (8), and the upper surface of the reinforcing rib (8) is arc-shaped.

6. A high-strength, stainless steel, welded pipe, processed by microwave sintering, according to claim 5, characterized in that: A flange (6) is fixedly connected to the front end of the outer protective tube (5), and a bolt connecting groove (10) is formed in the inner protective tube (6).

7. A high strength, stainless steel, welded pipe, processed by microwave sintering, according to claim 1, characterized by: A sealing ring (11) is fixedly connected to the front end of the stainless steel welded pipe (1).

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