High-temperature-resistant antioxidant stainless steel tube

Abstract

The utility model discloses a high-temperature-resistant antioxidant stainless steel tube, which relates to the technical field of stainless steel tubes and comprises a long tube, connectors are welded at two ends of the long tube, circular grooves are arranged on one sides of the two connectors close to each other, and the circular grooves are communicated with the long tube. The sides, away from each other, of the two connectors are each provided with a round opening communicating with the round groove, and an elastic sealing mechanism is installed in the round groove. According to the high-temperature-resistant anti-oxidation stainless steel pipe, a bending and breaking resistant mechanism composed of the sealing ring, the first elastic arc piece, the connecting cylinder, the second elastic arc piece and the mounting flange is arranged, and even if the two adjacent stainless steel pipes are slightly staggered, the two adjacent stainless steel pipes are connected and communicated in a sealed mode; every two adjacent mounting flanges are firmly connected all the time, the pressure borne by the bolts is small, the bolts cannot be bent or deformed, the breaking phenomenon cannot occur, connection is stable, and harm caused by sinking can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel pipes, in particular to a high temperature resistant and oxidation resistant stainless steel pipe. Background Art

[0002] Stainless steel pipes are pipes made of stainless steel, commonly used in pipelines for conveying fluids, such as oil, natural gas, water, coal gas, steam, etc. In order to achieve good concealment, some stainless steel pipes are usually pre-buried in the soil.

[0003] After a long time, the stainless steel pipe will sink slightly in the soil. Since the entire stainless steel pipe is long (it is connected in series by multiple pipe bodies, and adjacent pipe bodies are fixedly connected by connecting flanges), and there is a slight difference in ground subsidence in different areas, the adjacent pipe bodies will be slightly staggered. At this time, the bolts on the connecting flange will be under greater pressure, and the bolts are prone to bending and breaking, which reduces the stability of the connection and is prone to leakage. Utility Model Content

[0004] The utility model provides a high temperature resistant and oxidation resistant stainless steel pipe which has the advantage of stable connection when sinking, so as to solve the problems raised in the background technology.

[0005] In order to solve the defects of existing high-temperature resistant and oxidation-resistant stainless steel pipes that bend and break when sinking, the utility model provides the following technical solutions: a high-temperature resistant and oxidation-resistant stainless steel pipe, comprising a long pipe, with connectors welded at both ends of the long pipe, a circular groove is provided on the sides where the two connectors are close to each other, a circular opening connected to the circular groove is provided on the sides where the two connectors are away from each other, an elastic sealing mechanism is installed in the circular groove, an anti-bending and breaking mechanism is provided on the sides where the two connectors are away from each other, the outer surfaces of the anti-bending and breaking mechanism, the long pipe and the connector are coated with an anti-oxidation layer, the long pipe and the connector are both stainless steel structures, and a pair of long plates are welded on the front and back sides of the long pipe.

[0006] As a preferred technical solution of the utility model, an inner tube is arranged inside the long tube, and a plurality of brackets welded to the inner wall of the long tube are welded to the outer wall of the inner tube.

[0007] As a preferred technical solution of the utility model, the elastic sealing mechanism includes a fixing frame located inside the circular groove, the fixing frame is welded to the inner wall of the circular groove, and a plurality of annularly distributed elastic telescopic components are welded to the side of the fixing frame away from the long tube.

[0008] As a preferred technical solution of the utility model, the elastic telescopic component includes a sleeve welded to the side wall of the fixed frame, a spring welded to its inner wall is provided in the sleeve, a sliding column slidably connected to the sleeve is welded to one end of the spring away from the fixed frame, and a top seat is integrally connected to one end of the sliding column away from the spring.

[0009] As a preferred technical solution of the utility model, the anti-bending and breaking mechanism includes a sealing ring attached to the inner wall of one side of the circular groove, one end of the top seat is attached to the side wall of the sealing ring, a plurality of first elastic arc sheets are welded to the outer wall of the sealing ring, the first elastic arc sheets are distributed circumferentially, and the first elastic arc sheets are attached to the inner wall of the circular groove, the end of the sealing ring away from the long tube is integrally connected with a connecting tube, a plurality of second elastic arc sheets are welded to the outer wall of the connecting tube, the second elastic arc sheets are distributed circumferentially, and the second elastic arc sheets are attached to the inner wall of the circular mouth, and the end of the connecting tube away from the long tube is integrally connected with a mounting flange.

[0010] As a preferred technical solution of the utility model, the second elastic arc piece and the first elastic arc piece are both spring steel structures, the mounting flange and the connecting tube are stainless steel structures, and the connecting tube is fixedly connected to the inner wall of the circular mouth with multiple layers of rubber film.

[0011] Compared with the prior art, the utility model provides a high temperature resistant and oxidation resistant stainless steel pipe, which has the following beneficial effects:

[0012] 1. This kind of high-temperature resistant and oxidation-resistant stainless steel pipe is pre-buried in the soil. When different degrees of sinking occur, due to the anti-bending and breaking mechanism composed of a sealing ring, a first elastic arc piece, a connecting tube, a second elastic arc piece and a mounting flange, even if two adjacent stainless steel pipes are slightly misaligned, the two adjacent stainless steel pipes are sealed and connected, and the two adjacent mounting flanges are always firmly connected. The bolts are under little pressure, and the bolts will not bend or deform, and will not break. The connection is stable and not easy to leak, which can effectively reduce the harm caused by sinking.

[0013] 2. This high temperature resistant and oxidation resistant stainless steel pipe is provided with a long plate to increase the contact surface, which can effectively increase the resistance of the stainless steel pipe when it sinks, and can play a good auxiliary role in reducing the degree of sinking.

[0014] 3. This high-temperature resistant and oxidation-resistant stainless steel pipe is made of stainless steel, which has good oxidation resistance and high temperature resistance. At the same time, an anti-oxidation layer is provided to further improve the oxidation resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a cutaway view of the long tube of the utility model;

[0017] Figure 3 This is a disassembled diagram of the anti-bending and breaking mechanism, the connector and the elastic sealing mechanism of the utility model;

[0018] Figure 4 It is a front cross-sectional view of the elastic telescopic component of the utility model.

[0019] In the figure:

[0020] 10. Long tube; 20. Connector; 30. Round groove; 40. Round mouth; 50. Elastic sealing mechanism; 51. Fixed frame; 52. Elastic telescopic component; 521. Sleeve; 522. Spring; 523. Sliding column; 524. Top seat; 60. Anti-bending and anti-breaking mechanism; 61. Sealing ring; 62. First elastic arc piece; 63. Connecting tube; 64. Second elastic arc piece; 65. Mounting flange; 70. Anti-oxidation layer; 80. Long plate; 90. Inner tube; 100. Bracket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 The utility model discloses a high temperature resistant and oxidation resistant stainless steel pipe, comprising a long pipe 10, with connectors 20 welded at both ends of the long pipe 10, circular grooves 30 are provided on the sides where the two connectors 20 are close to each other, and circular openings 40 connected to the circular grooves 30 are provided on the sides where the two connectors 20 are far away from each other, and elastic sealing mechanisms 50 are installed in the circular grooves 30, and anti-bending and breaking mechanisms 60 are provided on the sides where the two connectors 20 are far away from each other, and the outer surfaces of the anti-bending and breaking mechanisms 60, the long pipe 10 and the connector 20 are coated with an anti-oxidation layer 70, which is a chrome-plated layer with good anti-oxidation performance. The long pipe 10 and the connector 20 are both stainless steel structures with high strength, good anti-oxidation performance, and high temperature resistance, and are not easily damaged in high temperature states. A pair of long plates 80 are welded on the front and rear sides of the long pipe 10, which can effectively increase the resistance of the stainless steel pipe when it sinks, and can play a good auxiliary role in reducing the degree of sinking.

[0023] Specifically, an inner tube 90 is disposed inside the long tube 10 , and a plurality of brackets 100 welded to the inner wall of the long tube 10 are welded to the outer wall of the inner tube 90 .

[0024] In this embodiment, the overall strength of the entire stainless steel pipe can be improved, and the entire long pipe 10 is not prone to bending when it sinks.

[0025] Specifically, the elastic sealing mechanism 50 includes a fixed frame 51 located inside the circular groove 30, the fixed frame 51 is welded to the inner wall of the circular groove 30, and a plurality of annularly distributed elastic telescopic components 52 are welded on the side of the fixed frame 51 away from the long tube 10, and the elastic telescopic component 52 includes a sleeve 521 welded to the side wall of the fixed frame 51, and a spring 522 is provided in the sleeve 521 and welded to the inner wall thereof, and a sliding column 523 slidably connected to the sleeve 521 is welded on one end of the spring 522 away from the fixed frame 51, and a top seat 524 is integrally connected to one end of the sliding column 523 away from the spring 522.

[0026] In this embodiment, under the elastic extrusion of the elastic telescopic component 52, the sealing ring 61 is always elastically attached to the inner wall of one side of the circular groove 30, which can ensure the sealing performance of the stainless steel.

[0027] Specifically, the anti-bending and breaking mechanism 60 includes a sealing ring 61 attached to the inner wall of one side of the circular groove 30, one end of the top seat 524 is attached to the side wall of the sealing ring 61, a plurality of first elastic arc pieces 62 are welded to the outer wall of the sealing ring 61, the first elastic arc pieces 62 are distributed circumferentially, and the first elastic arc pieces 62 are attached to the inner wall of the circular groove 30, the end of the sealing ring 61 away from the long tube 10 is integrally connected with a connecting tube 63, the outer wall of the connecting tube 63 is welded with a plurality of second elastic arc pieces 64, the second elastic arc pieces 64 are distributed circumferentially, and the second elastic arc pieces 64 are attached to the inner wall of the circular mouth 40, and the end of the connecting tube 63 away from the long tube 10 is integrally connected with a mounting flange 65.

[0028] In the present embodiment, when different degrees of sinking occur, parts of the first elastic arc piece 62 and the second elastic arc piece 64 will be squeezed and elastically deformed. Under the elastic squeezing of the elastic telescopic component 52, the sealing ring 61 is always in contact with the inner wall of one side of the circular groove 30, but the contact surface of the sealing ring 61 with the inner wall of one side of the circular groove 30 will change slightly. At this time, the two adjacent stainless steel pipes will be slightly misaligned, but the two mounting flanges 65 are always tightly connected, the bolts will not be subjected to greater pressure, the bolts are not easy to deform and break, and the safety is high.

[0029] Specifically, the second elastic arc piece 64 and the first elastic arc piece 62 are both spring steel structures, the mounting flange 65 and the connecting tube 63 are stainless steel structures, and the connecting tube 63 is fixedly connected to the inner wall of the circular opening 40 with multiple layers of rubber films.

[0030] In this embodiment, the stainless steel structure has high strength and good anti-oxidation and high temperature resistance. The additional rubber film can prevent dirt from contacting the sealing ring 61, thereby improving cleanliness and avoiding pollution.

[0031] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant and oxidation resistant stainless steel pipe, characterized in that: The invention comprises a long tube (10), connecting heads (20) are welded at both ends of the long tube (10), a circular groove (30) is provided on the sides of the two connecting heads (20) close to each other, a circular opening (40) connected to the circular groove (30) is provided on the sides of the two connecting heads (20) away from each other, an elastic sealing mechanism (50) is installed in the circular groove (30), an anti-bending and breaking mechanism (60) is provided on the sides of the two connecting heads (20) away from each other, and the outer surfaces of the anti-bending and breaking mechanism (60), the long tube (10) and the connecting head (20) are coated with an anti-oxidation layer (70), the long tube (10) and the connecting head (20) are both made of stainless steel, and a pair of long plates (80) are welded on the front and rear sides of the long tube (10).

2. The high temperature resistant and oxidation resistant stainless steel pipe according to claim 1, characterized in that: An inner tube (90) is arranged inside the long tube (10), and a plurality of brackets (100) welded to the inner wall of the long tube (10) are welded to the outer wall of the inner tube (90).

3. The high temperature resistant and oxidation resistant stainless steel pipe according to claim 1, characterized in that: The elastic sealing mechanism (50) comprises a fixing frame (51) located inside the circular groove (30), the fixing frame (51) being welded to the inner wall of the circular groove (30), and a plurality of elastic telescopic components (52) distributed in an annular manner are welded to a side of the fixing frame (51) away from the long tube (10).

4. The high temperature resistant and oxidation resistant stainless steel pipe according to claim 3, characterized in that: The elastic telescopic component (52) comprises a sleeve (521) welded to the side wall of the fixing frame (51), a spring (522) is arranged in the sleeve (521) and is welded to the inner wall thereof, a sliding column (523) is welded to the end of the spring (522) away from the fixing frame (51) and is slidably connected to the sleeve (521), and a top seat (524) is integrally connected to the end of the sliding column (523) away from the spring (522).

5. The high temperature resistant and oxidation resistant stainless steel pipe according to claim 4, characterized in that: The anti-bending and breaking mechanism (60) comprises a sealing ring (61) affixed to the inner wall of one side of the circular groove (30); one end of the top seat (524) affixes to the side wall of the sealing ring (61); a plurality of first elastic arc sheets (62) are welded to the outer wall of the sealing ring (61); the first elastic arc sheets (62) are distributed circumferentially and affixed to the inner wall of the circular groove (30); an end of the sealing ring (61) away from the long tube (10) is integrally connected to a connecting tube (63); a plurality of second elastic arc sheets (64) are welded to the outer wall of the connecting tube (63); the second elastic arc sheets (64) are distributed circumferentially and affixed to the inner wall of the circular opening (40); and an end of the connecting tube (63) away from the long tube (10) is integrally connected to a mounting flange (65).

6. The high temperature resistant and oxidation resistant stainless steel pipe according to claim 5, characterized in that: The second elastic arc piece (64) and the first elastic arc piece (62) are both spring steel structures, the mounting flange (65) and the connecting tube (63) are stainless steel structures, and the connecting tube (63) is fixedly connected to the inner wall of the circular opening (40) by a multi-layer rubber film.

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