Thermally insulated welded stainless steel pipe

Abstract

The application relates to a heat-insulated welded stainless steel pipe, which comprises a steel pipe body and a heat preservation part arranged outside the steel pipe body, the heat preservation part is a heat preservation sleeve pipe which is installed outside the steel pipe body through an installation structure, the installation structure comprises an installation plate movably connected to the side wall of the steel pipe body and a positioning column movably connected to the heat preservation sleeve pipe, the installation plate is inserted into the heat preservation sleeve pipe, and the positioning column is abutted against one side of the installation plate. The heat preservation sleeve pipe is arranged outside the steel pipe body, the installation plate is inserted into the heat preservation sleeve pipe, and the positioning column is abutted and locked, so that the heat preservation sleeve pipe can be conveniently installed, the heat exchange efficiency between the welded stainless steel pipe and the outside environment during transportation can be reduced, the welded stainless steel pipe can be applied to long-distance transportation of heated heavy viscous crude oil, fuel oil or natural gas and the like in a low-temperature environment, and the heat insulation performance of the welded stainless steel pipe is improved.

Description

Technical Field

[0001] This application relates to the technical field of welded stainless steel pipes, and in particular to a heat-insulating welded stainless steel pipe. Background Technology

[0002] When stainless steel pipes are welded together, they lack heat insulation properties, resulting in high efficiency of heat exchange with the outside environment during transportation. This makes them unsuitable for long-distance transportation of heated heavy viscous crude oil, fuel oil, or natural gas in low-temperature environments. Therefore, there is still room for improvement in current welded stainless steel pipes. Utility Model Content

[0003] In order to reduce the heat exchange efficiency between steel pipes and the outside environment during transportation, and to make them suitable for long-distance transportation of heated heavy viscous crude oil, fuel oil or natural gas in low-temperature environments, this application provides a heat-insulated welded stainless steel pipe.

[0004] This application provides a heat-insulated welded stainless steel pipe using the following technical solution: A heat-insulated welded stainless steel pipe includes a steel pipe body and an insulation part disposed outside the steel pipe body. The insulation part is an insulation sleeve installed outside the steel pipe body by an installation structure. The installation structure includes an installation plate movably connected to the side wall of the steel pipe body and a positioning column movably connected to the insulation sleeve. The installation plate is inserted into the insulation sleeve, and the positioning column abuts against and is positioned on one side of the installation plate.

[0005] By adopting the above technical solution, an insulation sleeve is installed outside the steel pipe body. The installation plate is inserted into the insulation sleeve and the positioning column is locked together, which facilitates the installation of the insulation sleeve. This reduces the heat exchange efficiency between the welded stainless steel pipe and the outside world during transportation, making it suitable for long-distance transportation of heated heavy viscous crude oil, fuel oil or natural gas in low-temperature environments, and improving the heat insulation performance of the welded stainless steel pipe.

[0006] Preferably, the steel pipe body has a receiving groove for accommodating the mounting plate, and the mounting plate is connected to the receiving groove by a mounting spring; the insulation sleeve has a mounting groove corresponding to the mounting plate, and the mounting structure also includes an insert plate fixed to one side wall of the mounting groove, the insert plate being inserted into the mounting plate; the inner wall of the insulation sleeve is fixed with a slider that is offset from the mounting plate, and the steel pipe body has a guide groove for guiding the slider, and one end of the guide groove near the steel pipe body is connected to a guide groove for the slider to slide and be positioned; when the slider is positioned in the guide groove, the mounting plate enters the mounting groove; and a clearance groove is connected to the side wall of the guide groove.

[0007] By adopting the above technical solution, a slider that is misaligned with the mounting plate slides along the slide groove, so that the mounting plate is received in the receiving groove by the abutment of the side wall of the insulation sleeve; until the slider slides to the end of the slide groove and then slides along the guide groove, so that the insulation sleeve rotates until the mounting plate passes through the outside of the steel pipe body and enters the mounting groove, and then pushes the insulation sleeve to make the slider enter the relief groove. At this time, the insertion plate is inserted into the mounting plate, so that the mounting plate maintains the stability of being inserted into the insulation sleeve.

[0008] Preferably, a locking groove is provided on the side wall of the positioning post, and deformable locking plates are fixed on both sides of the insulation sleeve corresponding to the positioning post. Deformable protrusions are fixed on the side wall of the locking plates, and the protrusions are engaged and positioned in the locking groove.

[0009] By adopting the above technical solution, the deformable locking plate and protrusions play a positioning role for the positioning post. When the positioning post abuts against the side wall of the mounting plate, it is fixed by the protrusions in the locking groove, so that the positioning post will not easily fall out.

[0010] Preferably, a slot is also provided on the side wall of the positioning post on the side of the locking groove near the main body of the steel pipe. When the protrusion is engaged with the slot, the positioning post is positioned above the mounting plate.

[0011] By adopting the above technical solution, the slot and protrusion can position the positioning post above the mounting plate during the process of the insulation sleeve being fitted outside the steel pipe body, thereby avoiding squeezing the mounting plate and hindering the insertion process of the insertion plate during the process of the mounting plate being positioned in the mounting slot.

[0012] Preferably, the mounting plate is arc-shaped, and mounting springs are respectively disposed at both ends of the mounting plate.

[0013] By adopting the above technical solution, the arc-shaped mounting plate improves positioning stability, and the mounting springs set at both ends of the mounting plate maintain the lifting stability of the mounting plate.

[0014] Preferably, the mounting plate has inclined surfaces on opposite sidewalls that extend in opposite directions away from the main body of the steel pipe.

[0015] By adopting the above technical solution, when the insulation sleeve is fitted outside the steel pipe body, the installation plate can smoothly enter the installation groove by setting the inclined surface.

[0016] Preferably, the positioning post is made of deformable rubber.

[0017] By adopting the above technical solution, the rubber positioning post has deformation properties, which can better abut against the side wall of the mounting plate to achieve positioning; on the other hand, the rubber material can also increase friction and improve the stability of the positioning post inserted into one side of the mounting plate.

[0018] Preferably, the positioning post has a threaded hole for threaded connection of a threaded screw.

[0019] By adopting the above technical solution, a threaded hole is set to cooperate with a threaded screw, which facilitates the removal of the positioning pin by using the screw, thereby enabling the disassembly of the insulation sleeve.

[0020] In summary, this application includes at least one of the following beneficial technical effects: An insulation sleeve is installed outside the main body of the steel pipe. The installation plate is inserted into the insulation sleeve and the positioning column is locked together to facilitate the installation of the insulation sleeve. This reduces the heat exchange efficiency between the welded stainless steel pipe and the outside environment during transportation, making it suitable for long-distance transportation of heated heavy viscous crude oil, fuel oil or natural gas in low-temperature environments, and improving the heat insulation performance of the welded stainless steel pipe. The slider, which is misaligned with the mounting plate, slides along the groove, allowing the mounting plate to be received in the receiving groove by the abutment of the side wall of the insulation sleeve. After the slider slides to the end of the groove, it slides along the guide groove, causing the insulation sleeve to rotate until the mounting plate passes through the outside of the steel pipe body and enters the mounting groove. Then, the insulation sleeve is pushed to make the slider enter the relief groove. At this time, the insertion plate is inserted into the mounting plate, keeping the mounting plate stable inside the insulation sleeve. The deformable locking plate and protrusions play a positioning role for the positioning post. When the positioning post abuts against the side wall of the mounting plate, it is fixed by the protrusions into the locking groove, so that the positioning post will not easily fall out. The grooves and protrusions can position the positioning post above the mounting plate when the insulation sleeve is installed outside the steel pipe body, thereby avoiding squeezing the mounting plate and hindering the insertion process of the insert plate when the mounting plate is positioned in the mounting groove. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a cross-sectional view of the mounting plate connected to and positioned in the mounting groove according to an embodiment of this application. Figure 3 This is a partial cross-sectional view of the positioning post abutting against the mounting plate in an embodiment of this application. Figure 4 This is a partially exploded structural diagram highlighting the cooperation between the slider, guide groove, and clearance groove in an embodiment of this application. Figure 5 This is a schematic diagram highlighting the structure of the chute, guide groove, and clearance groove in an embodiment of this application; Figure 6 This is a partially exploded structural diagram highlighting the insertion of the insert plate into the mounting plate according to an embodiment of this application.

[0022] Explanation of reference numerals in the attached drawings: 1. Steel pipe body; 11. Receiving groove; 12. Sliding groove; 121. Guide groove; 122. Relief groove; 2. Insulation part; 21. Insulation sleeve; 211. Mounting groove; 212. Sliding block; 3. Mounting structure; 31. Mounting plate; 311. Inclined surface; 32. Insert plate; 33. Positioning post; 331. Locking groove; 332. Slot; 4. Mounting spring; 5. Locking plate; 51. Protrusion. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the accompanying drawings.

[0024] This application discloses a heat-insulating welded stainless steel pipe, referring to... Figure 1 It includes a steel pipe body 1 and an insulation part 2 disposed outside the steel pipe body 1. The insulation part 2 is an insulation sleeve 21 installed outside the steel pipe body 1 through an installation structure 3. It can reduce the heat exchange efficiency between the welded stainless steel pipe and the outside world during transportation, so as to be suitable for long-distance transportation of heated heavy viscous crude oil, fuel oil or natural gas in low-temperature environments, and improve the heat insulation performance of the welded stainless steel pipe.

[0025] Reference Figure 1 , 2 The installation structure 3 includes a deformable mounting plate 31 movably connected to the side wall of the steel pipe body 1. The steel pipe body 1 has a receiving groove 11 for accommodating the mounting plate 31. The mounting plate 31 is connected to the receiving groove 11 by a mounting spring 4. The mounting plate 31 is arc-shaped, and the mounting spring 4 is respectively set at both ends of the mounting plate 31. The arc-shaped mounting plate 31 improves the positioning stability, and the mounting spring 4 set at both ends of the mounting plate 31 maintains the lifting stability of the mounting plate 31. The insulation sleeve 21 has a mounting groove 211 corresponding to the mounting plate 31. The mounting plate 31 can be inserted through the outside of the steel pipe body 1 and accommodated in the mounting groove 211. The mounting plates 31 are spaced along the side wall of the steel pipe body 1 and inserted through corresponding positions inside the insulation sleeve 21.

[0026] Reference Figure 2 , 3 The mounting plate 31 has inclined surfaces 311 on its opposite sidewalls that extend in the direction away from the main body of the steel pipe 1; when the insulation sleeve 21 is fitted outside the main body of the steel pipe 1, the mounting plate 31 is easily placed in the receiving groove 11.

[0027] Reference Figure 2 , 4 The inner wall of the insulation sleeve 21 is fixed with a slider 212 that is misaligned with the mounting plate 31.

[0028] Reference Figure 3-5The steel pipe body 1 is provided with a guide groove 12 for the guide slider 212. The end of the guide groove 12 near the steel pipe body 1 is connected to a guide groove 121 for the slider 212 to slide and be positioned. The slider 212, which is misaligned with the mounting plate 31, slides along the guide groove 12, so that the mounting plate 31 is received in the receiving groove 11 under the abutment of the side wall of the insulation sleeve 21. Until the slider 212 slides to the end of the guide groove 12, it slides along the guide groove 121, so that the insulation sleeve 21 rotates until the mounting plate 31 passes through the outside of the steel pipe body 1 and enters the mounting groove 211.

[0029] Reference Figure 4 , 6 The installation structure 3 also includes an insert plate 32 fixed to one side wall of the installation groove 211, which can be inserted into the installation plate 31; a clearance groove 122 is provided on the side wall of the guide groove 121, and the insulation sleeve 21 is pushed longitudinally to make the slider 212 enter the clearance groove 122, which facilitates the process of inserting the insert plate 32 into the installation plate 31; when the insert plate 32 is inserted and positioned in the installation plate 31, it maintains the stability of the installation plate 31 inserted into the insulation sleeve 21; when the slider 212 enters the clearance groove 122, the insulation sleeve 21 covers the outside of the steel pipe body 1 and both ends of the insulation sleeve 21 are flush with the ends of the steel pipe body 1.

[0030] Reference Figure 3 The installation structure 3 also includes a positioning post 33 movably connected to the insulation sleeve 21. The positioning post 33 is made of deformable rubber and is positioned against the side of the mounting plate 31 opposite to the insert plate 32. The rubber positioning post 33 has deformability, which can better abut against the side wall of the mounting plate 31 to achieve positioning. On the other hand, the rubber material can also increase friction and improve the stability of the positioning post 33 inserted into the side of the mounting plate 31.

[0031] Reference Figure 3 The positioning post 33 has a locking groove 331 on its side wall. The insulation sleeve 21 is fixed with deformable locking plates 5 on both sides corresponding to the positioning post 33. The locking plate 5 has a deformable protrusion 51 fixed on its side wall. The protrusion 51 is engaged and positioned in the locking groove 331. The deformable locking plate 5 and the protrusion 51 play a positioning role for the positioning post 33. When the positioning post 33 abuts against the side wall of the mounting plate 31, it is fixed by the protrusion 51 engaging and locking in the locking groove 331, so that the positioning post 33 will not easily fall out.

[0032] Reference Figure 3On the side wall of the positioning post 33, a slot 332 is also provided on the side of the locking groove 331 near the steel pipe body 1. When the protrusion 51 is engaged in the slot 332, the positioning post 33 is positioned above the mounting plate 31. The slot 332 and the protrusion 51 can position the positioning post 33 above the mounting plate 31 during the process of the insulation sleeve 21 being fitted outside the steel pipe body 1, thereby avoiding the mounting plate 31 being squeezed during the process of the mounting plate 31 being positioned in the mounting groove 211, thus preventing the insertion process of the insertion plate 32 from being hindered.

[0033] Reference Figure 1 , 3 The outer end of the positioning post 33 is provided with a threaded hole, and a screw can be threaded into the threaded hole to facilitate the removal of the positioning post 33 and the disassembly of the insulation sleeve 21.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heat-insulating welded stainless steel pipe, characterized in that: It includes a steel pipe body (1) and an insulation part (2) disposed outside the steel pipe body (1). The insulation part (2) is an insulation sleeve (21) installed outside the steel pipe body (1) by an installation structure (3). The installation structure (3) includes an installation plate (31) movably connected to the side wall of the steel pipe body (1) and a positioning column (33) movably connected to the insulation sleeve (21). The installation plate (31) is inserted into the insulation sleeve (21), and the positioning column (33) abuts against and is positioned on one side of the installation plate (31).

2. The heat-insulating welded stainless steel pipe according to claim 1, characterized in that: The main body (1) of the steel pipe is provided with a receiving groove (11) for accommodating the mounting plate (31), and the mounting plate (31) is connected to the receiving groove (11) by a mounting spring (4); the insulation sleeve (21) is provided with a mounting groove (211) corresponding to the mounting plate (31), and the mounting structure (3) also includes an insert plate (32) fixed to one side wall of the mounting groove (211), and the insert plate (32) is inserted into the mounting plate (31); the inner wall of the insulation sleeve (21) is fixed with a mounting plate (31) corresponding to the mounting plate (31). The mounting plate (31) has a slider (212) that is misaligned. The steel pipe body (1) has a guide groove (12) for the slider (212). The end of the guide groove (12) near the steel pipe body (1) is connected to a guide groove (121) for the slider (212) to slide and be positioned. When the slider (212) is positioned in the guide groove (121), the mounting plate (31) enters the mounting groove (211). The side wall of the guide groove (121) is connected to a clearance groove (122).

3. The heat-insulating welded stainless steel pipe according to claim 2, characterized in that: The positioning post (33) has a locking groove (331) on its side wall. The insulation sleeve (21) is fixed with deformable locking plates (5) on both sides of the positioning post (33). The locking plates (5) have deformable protrusions (51) on their side walls. The protrusions (51) are engaged and positioned in the locking groove (331).

4. The heat-insulating welded stainless steel pipe according to claim 3, characterized in that: The positioning post (33) has a slot (332) on the side wall of the locking groove (331) near the steel pipe body (1). When the protrusion (51) is engaged in the slot (332), the positioning post (33) is positioned above the mounting plate (31).

5. The heat-insulating welded stainless steel pipe according to claim 2, characterized in that: The mounting plate (31) is arc-shaped, and the mounting springs (4) are respectively located at both ends of the mounting plate (31).

6. The heat-insulating welded stainless steel pipe according to claim 1, characterized in that: The mounting plate (31) has inclined surfaces (311) that extend in opposite directions toward the steel pipe body (1) on opposite side walls.

7. The heat-insulating welded stainless steel pipe according to claim 1, characterized in that: The positioning post (33) is made of deformable rubber.

8. The heat-insulating welded stainless steel pipe according to claim 1, characterized in that: The positioning post (33) has a threaded hole for threaded connection of a threaded screw.

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