Corrosion resistant cryogenic pipe

Abstract

A kind of corrosion-resistant low temperature pipe, including corrosion-resistant low temperature pipeline, fixed sleeve, movable sleeve, sealing ring, clasp, slide bar, positioning rod, the corrosion-resistant low temperature pipeline both ends have flange, flange has locating disc, flange is connected fixed sleeve, fixed sleeve has sliding slot, sliding slot is adapted to locating disc, locating disc connects sliding slot, sliding slot is adapted to movable sleeve, movable sleeve connects sliding slot, movable sleeve slides in sliding slot, movable sleeve has installation support, installation support connects locating disc, locating disc has threaded support, threaded support is connected installation support by thread outside, threaded support is connected fixed sleeve inside, fixed sleeve connects corrosion-resistant low temperature pipeline and forms sealing groove, sealing groove is adapted to sealing ring, sealing ring connects sealing groove, epoxy coating is arranged on the inner wall of corrosion-resistant low temperature pipeline.

Description

Technical Field

[0001] This utility model relates to the field of cryogenic pipes, and in particular to a corrosion-resistant cryogenic pipe. Background Technology

[0002] Corrosion-resistant cryogenic pipelines are now widely used in engineering construction. An existing patent (publication number: CN215060274U) proposes a corrosion-resistant cryogenic pipeline connection flange, including a left flange. A right flange is detachably installed at one end of the left flange by fixing bolts and fixing nuts. A gasket placement mechanism is provided at one end of the left flange. The inner cavities of the left flange and the right flange are threadedly connected by a protective mechanism. However, in this device, the flange is only fixed by bolts and nuts. Affected by the vibration of the medium flowing in the pipeline, the threaded connection is prone to loosening, resulting in an increase in the flange gap and leakage, which has drawbacks. Summary of the Invention

[0003] This utility model addresses the aforementioned shortcomings of existing technologies by providing a corrosion-resistant cryogenic pipe that is easy to assemble and disassemble, requires no specialized tools, improves the efficiency of installation and maintenance of corrosion-resistant cryogenic pipelines, reduces time costs, and has good sealing and braking properties. This prevents the pipeline connections from becoming loose or leaking due to vibrations caused by the flow of the medium inside the pipeline, thus ensuring the stability of the pipeline connections.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A corrosion-resistant cryogenic pipe includes a corrosion-resistant cryogenic pipe, a fixed pipe sleeve, a movable sleeve, a sealing ring, a retaining ring, a sliding rod, and a positioning rod. The corrosion-resistant cryogenic pipe has flanges at both ends, each flange having a positioning plate. The flanges are connected to the fixed pipe sleeve. The fixed pipe sleeve has a sliding groove that adapts to the positioning plate, and the positioning plate is connected to the sliding groove. The sliding groove also adapts to the movable sleeve, and the movable sleeve is connected to the sliding groove. The movable sleeve slides within the sliding groove. The movable sleeve has an installation support that connects to the positioning plate. The positioning plate has a threaded support that is externally connected to the installation support via threads. The threaded support is internally connected to the fixed pipe sleeve. The fixed pipe sleeve connects to the corrosion-resistant cryogenic pipe to form a sealing groove. The sealing groove adapts to the sealing ring, and the sealing ring is connected to the sealing groove. The inner wall of the corrosion-resistant cryogenic pipe is coated with an epoxy resin coating.

[0006] The fixed sleeve of this utility model has locking blocks on both sides, the movable sleeve has inner locking grooves on both sides, and the positioning plate has outer locking grooves on both sides. The outer locking grooves and inner locking grooves are adapted to the locking blocks, and the locking blocks are sequentially connected to the inner locking grooves and outer locking grooves. The fixed sleeve is externally connected to a buckle, and the buckle has a control rod on its inner side. The fixed sleeve has sliding holes on both sides, and the movable sleeve has a control groove. The control groove and sliding holes are adapted to the control rod, and the control rod passes through the sliding hole and is connected to the control groove.

[0007] The buckle of this utility model is divided into an upper buckle and a lower buckle. The upper buckle is connected to the lower buckle. The upper buckle has upper connecting plates on both sides, and the lower buckle has lower connecting plates on both sides. The upper connecting plates are connected to the lower connecting plates. The lower connecting plates have fastening rods, and the upper connecting plates have fastening rod through holes. The fastening rods are adapted to the fastening rod through holes. The fastening rods pass through the fastening rod through holes and are connected to nuts by threads. Beneficial effects

[0008] This utility model features a locking mechanism between the two side buckles. When the knob is rotated, the control rods on both sides simultaneously move the movable sleeves inward or outward. When the movable sleeve moves outward to its maximum extent until the outer surface of the mounting sleeve is in contact with the outer surface of the fixed sleeve, the threaded support can be quickly installed between the thread and the mounting sleeve. After the thread is fixed, the knob is rotated in the opposite direction to move the movable sleeves inward to their maximum extent until the inner surface of the flange is in contact with the fixed sleeve, enhancing the clamping force on the sealing ring. This forms a highly efficient sealing barrier, improving the sealing effect at the pipe connection. Furthermore, the interlocking of the locking blocks, inner grooves, and outer grooves provides axial restraint for the corrosion-resistant cryogenic pipe. This prevents the fixed corrosion-resistant cryogenic pipe from rotating due to vibrations from the flow of the internal medium, which could cause the threaded support to loosen at the threaded connection with the mounting sleeve. This improves the stability of the pipe connection, prevents the gap between the flange and the fixed sleeve from increasing, and ensures the reliability of the pipeline operation.

[0009] This utility model is easy to assemble and disassemble, requiring no professional tools, improving the efficiency of installation and maintenance of corrosion-resistant low-temperature pipelines, reducing time costs, and also has good sealing and braking properties, avoiding the influence of vibrations caused by the flow of the medium inside the pipeline, which can cause the pipeline connection to loosen or leak, thus ensuring the stability of the pipeline connection. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a corrosion-resistant low-temperature pipe structure according to the present invention.

[0011] Figure 2 This is an exploded view of a corrosion-resistant low-temperature pipe structure according to the present invention.

[0012] Figure 3 This is a cross-sectional view of a corrosion-resistant low-temperature pipe structure according to the present invention.

[0013] Figure 4 This is a cross-sectional view of the corrosion-resistant low-temperature pipeline of this utility model in its disassembly and assembly state.

[0014] Figure 5 This is a schematic diagram of the fixed sleeve structure described in this utility model.

[0015] Figure 6This is a cross-sectional view of the connection structure of the fixed sleeve, positioning plate, and sealing ring described in this utility model.

[0016] Figure 7 This is a cross-sectional view of the connection structure of the buckle, fixed sleeve, and movable sleeve described in this utility model. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0018] Example 1:

[0019] A corrosion-resistant cryogenic pipe includes a corrosion-resistant cryogenic pipe 01, a fixed pipe sleeve 02, a movable sleeve 03, a sealing ring 06, a retaining ring 17, a sliding rod 25, and a positioning rod 26. The corrosion-resistant cryogenic pipe 01 has flanges 04 at both ends, each flange having a positioning plate 13. The flanges 04 are connected to the fixed pipe sleeve 02. The fixed pipe sleeve 02 has a sliding groove 12 that adapts to the positioning plate 13. The positioning plate 13 is connected to the sliding groove 12. The sliding groove 12 adapts to the movable sleeve 03, which is connected to the sliding groove 12 and slides within it. The movable sleeve 03 has an installation support 08 that connects to the positioning plate 13. The positioning plate 13 has a threaded support 08. 7. Threaded support 07 is externally connected to support 08 via threaded connection. A fixed pipe sleeve 02 is internally connected to the threaded support 07. The fixed pipe sleeve 02 connects to the corrosion-resistant cryogenic pipeline 01 to form a sealing groove 05. The sealing groove 05 is compatible with the sealing ring 06, and the sealing ring 06 connects to the sealing groove 05. An epoxy resin or polyolefin coating is applied to the inner wall of the corrosion-resistant cryogenic pipeline as an anti-corrosion coating. This device is easy to install and disassemble, requiring no specialized tools, thus improving the installation and maintenance efficiency of the corrosion-resistant cryogenic pipeline 01 and reducing time costs. It also provides good sealing and braking properties, preventing loosening and leakage at pipeline connections due to vibrations from the flow of the operating medium within the pipeline, ensuring the stability of the pipeline connections.

[0020] Example 2:

[0021] The fixed sleeve 02 of this utility model has locking blocks 09 on both sides, the movable sleeve 03 has inner locking grooves 11 on both sides, and the positioning plate 13 has outer locking grooves 10 on both sides. The outer locking grooves 10 and inner locking grooves 11 are adapted to the locking blocks 09. The locking blocks 09 are sequentially connected to the inner locking grooves 11 and outer locking grooves 10. The fixed sleeve 02 is externally connected to a buckle 17. The buckle 17 has a control rod 14 on its inner side. The fixed sleeve 02 has sliding holes 16 on both sides, and the movable sleeve 03 has a control groove 15. The control groove 15 and sliding holes 16 are adapted to the control rod 14. The control rod 14 passes through the sliding holes 16 and is connected to the control groove 15.

[0022] Example 3:

[0023] The buckle 17 of this utility model is divided into an upper buckle 171 and a lower buckle 172. The upper buckle 171 is connected to the lower buckle 172. The upper buckle 171 has upper connecting plates 18 on both sides, and the lower buckle 172 has lower connecting plates 19 on both sides. The upper connecting plates 18 are connected to the lower connecting plates 19. The lower connecting plates 19 have fastening rods 20, and the upper connecting plates 18 have fastening rod through holes 21. The fastening rods 20 are adapted to the fastening rod through holes 21 and pass through the fastening rod through holes 21. The fastening rods 20 are connected to nuts 22 by threads.

[0024] Example 4:

[0025] The upper buckle 171 of this utility model has a positioning support block 23 on the outside, and the upper part of the fixed tube sleeve 02 has an upper support block 27. The positioning rod 26 passes through the upper support block 27 and the positioning support block 23 in sequence. The positioning rod 26 is connected to the positioning support block 23 by a thread. The two ends of the positioning rod 26 are connected to the knobs 29, and the knobs 29 are attached to the upper support block 27.

[0026] Example 5:

[0027] The lower buckle 172 of this utility model has a slider 24 on its outside, and a lower support block 28 at the lower part of the fixed sleeve 02. The slide rod 25 passes through the lower support block 28 and the slider 24 in sequence. The two ends of the slide rod 25 are connected to baffles 30, and the baffles 30 are connected to the lower support block 28. The two buckles 17 are fastened and fixed together, so that when the knob 29 is rotated, the two control rods 14 drive the two movable sleeves 03 to move inward or outward simultaneously. When the movable sleeve 03 moves outward to the maximum extent to the mounting support 0, When the outer surface of the 8th sleeve is in contact with the outer surface of the fixed sleeve 02, the threaded support 07 can be quickly installed between the thread and the installation support 08. After the thread is fixed, the knob 29 is rotated in the opposite direction to drive the movable sleeves 03 on both sides to move inward to the maximum extent, so that the inner surface of the flange 04 is in contact with the fixed sleeve 02, which enhances the clamping force on the sealing ring 06. By forming an efficient sealing barrier, the sealing effect of the pipeline connection is improved. At the same time, the interlocking of the locking block 09, the inner groove 11, and the outer groove 10 forms an axial limit on the corrosion-resistant low-temperature pipeline 01. This prevents the corrosion-resistant low-temperature pipeline 01 from rotating due to vibrations caused by the flow of the medium inside the pipeline, which could lead to the loosening of the threaded connection between the threaded support 07 and the installation support 08. This improves the stability of the pipeline connection, prevents the gap between the flange 04 and the fixed sleeve 02 from increasing, and avoids leakage, thus ensuring the reliability of pipeline operation.

[0028] Example 6:

[0029] Installation steps: First, assemble the fixed sleeve 02 structure. Place the movable sleeve 03 into the slide groove 12, with the control groove 15 corresponding to the slide hole 16. Insert the locking block 09 into the inner locking groove 11. Then, place the retaining ring 17 outside the fixed sleeve 02, and insert the control rod 14 through the slide hole 16 into the control groove 15. The upper retaining ring 171 and the lower retaining ring 172 are fastened together. The upper connecting plate 18 is connected to the lower connecting plate 19. The fastening rod 20 passes through the fastening rod through hole 21 and is fixedly connected to the nut 22 through threads. Then, the positioning rod 26 passes through the upper support block 27 and the positioning support block 23 in sequence, and the two ends of the positioning rod 26 are respectively positioned and connected to the positioning support blocks 23 on both sides through positive and negative threads. Then, place the knob 29 outside the upper support block 27 and fix it to the positioning rod 26, with the inner surface of the knob 29 fitting against the outer surface of the upper support block 27. Then, the sliding rod 25 passes through the lower... After assembling the fixed pipe sleeve 02 structure, the support block 28 and slider 24 are installed. Finally, the baffle 30 is placed outside the lower support block 28 and fixedly connected to the slide rod 25. Then, the movable sleeves 03 on both sides are moved outward to the maximum extent by rotating the knob 29. The outer surface of the mounting support 08 is in contact with the outer surface of the fixed pipe sleeve 02. Then, the sealing ring 06 is placed in the sealing groove 05. Then, the corrosion-resistant low-temperature pipe 01 is placed outside the fixed pipe sleeve 02, and the threaded support 07 is embedded in the mounting support 08 and fixedly connected to it by threads until the inner surface of the positioning plate 13 is in contact with the mounting support 08, and the outer groove 10 and the inner groove 11 are aligned. Finally, the movable sleeves 03 on both sides are moved inward to the maximum extent by rotating the knob 29 in the opposite direction. The inner surface of the flange 04 is in contact with the fixed pipe sleeve 02, and the positioning plate 13 is embedded in the slide groove 12. The locking block 09 is embedded in the outer groove 10, completing the installation.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A corrosion-resistant low-temperature pipe, characterized in that: The system includes a corrosion-resistant cryogenic pipe (01), a fixed pipe sleeve (02), a movable sleeve (03), a sealing ring (06), a retaining ring (17), a sliding rod (25), and a positioning rod (26). The corrosion-resistant cryogenic pipe (01) has flanges (04) at both ends. Each flange (04) has a positioning plate (13). The flange (04) is connected to the fixed pipe sleeve (02). The fixed pipe sleeve (02) has a sliding groove (12). The sliding groove (12) is adapted to the positioning plate (13), and the positioning plate (13) is connected to the sliding groove (12). The sliding groove (12) is adapted to the movable sleeve (03), and the movable sleeve (03) is connected to the sliding groove (12). The movable sleeve (03) slides in the groove (12). The movable sleeve (03) has an installation support (08). The installation support (08) is connected to the positioning plate (13). The positioning plate (13) has a threaded support (07). The threaded support (07) is externally connected to the installation support (08) by threads. The threaded support (07) is internally connected to the fixed pipe sleeve (02). The fixed pipe sleeve (02) is connected to the corrosion-resistant low-temperature pipe (01) to form a sealing groove (05). The sealing groove (05) is compatible with the sealing ring (06). The sealing ring (06) is connected to the sealing groove (05). The inner wall of the corrosion-resistant low-temperature pipe (01) is provided with an epoxy resin coating.

2. The corrosion-resistant low-temperature pipe according to claim 1, characterized in that: The fixed sleeve (02) has locking blocks (09) on both sides, the movable sleeve (03) has inner locking grooves (11) on both sides, and the positioning plate (13) has outer locking grooves (10) on both sides. The outer locking grooves (10) and inner locking grooves (11) are adapted to the locking blocks (09). The locking blocks (09) are connected to the inner locking grooves (11) and outer locking grooves (10) in sequence. The fixed sleeve (02) is connected to a buckle (17) on the outside. The buckle (17) has a control rod (14) on the inside. The fixed sleeve (02) has sliding holes (16) on both sides, and the movable sleeve (03) has a control groove (15). The control groove (15) and sliding holes (16) are adapted to the control rod (14). The control rod (14) passes through the sliding holes (16) and is connected to the control groove (15).

3. The corrosion-resistant low-temperature pipe according to claim 2, characterized in that: The buckle (17) is divided into an upper buckle (171) and a lower buckle (172). The upper buckle (171) is connected to the lower buckle (172). The upper buckle (171) has an upper connecting plate (18) on both sides. The lower buckle (172) has a lower connecting plate (19) on both sides. The upper connecting plate (18) is connected to the lower connecting plate (19). The lower connecting plate (19) has a fastening rod (20). The upper connecting plate (18) has a fastening rod through hole (21). The fastening rod (20) is adapted to the fastening rod through hole (21). The fastening rod (20) passes through the fastening rod through hole (21). The fastening rod (20) is connected to the nut (22) by a thread.

4. A corrosion-resistant low-temperature pipe according to claim 3, characterized in that... The upper buckle (171) has a positioning support block (23) on the outside, and the upper part of the fixed sleeve (02) has an upper support block (27). The positioning rod (26) passes through the upper support block (27) and the positioning support block (23) in sequence. The positioning rod (26) is connected to the positioning support block (23) by a thread. The two ends of the positioning rod (26) are connected to knobs (29), and the knobs (29) fit against the upper support block (27).

5. A corrosion-resistant low-temperature pipe according to claim 1, characterized in that... The lower buckle (172) has a slider (24) on the outside, and the lower part of the fixed tube sleeve (02) has a lower support block (28). The slide rod (25) passes through the lower support block (28) and the slider (24) in sequence. The two ends of the slide rod (25) are connected to the baffle (30), and the baffle (30) is connected to the lower support block (28).

Images