Corrosion-resistant pressure pipeline and assembly thereof

Abstract

The invention discloses a corrosion-resistant pressure pipeline and an assembly thereof, and relates to the technical field of pressure pipelines, the corrosion-resistant pressure pipeline comprises two mounting rings, a plurality of hinge seats are fixedly mounted on the outer surfaces of the two mounting rings, connecting rods are rotatably mounted on the inner sides of the two corresponding hinge seats, and hinge seats are rotatably mounted at the ends, away from the hinge seats, of the multiple connecting rods; a protection part is jointly arranged on one sides of the hinge seats, the two mounting rings are connected with each other through a linkage component, and a proper-pressure adjusting part is arranged at the bottom of the linkage component; the connecting pipe further comprises a pipe body, a connecting pipe and a connecting flange, and anti-corrosion layers are arranged on the outer wall and the inner wall of the pipe body and the outer wall and the inner wall of the connecting pipe. The anti-corrosion pipe has the advantages that corrosion of the pipe body can be avoided to a great extent through the anti-corrosion layers arranged on the outer walls of the pipe body and the connecting pipe; and meanwhile, the pipeline assembly used in cooperation with the pipeline can protect and position the pipeline by combining a plurality of arc-shaped sleeve plates into a sleeve pipe, and water leakage caused by stress concentration at the flange is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure pipelines, and in particular to a corrosion-resistant pressure pipeline and a component thereof. Background Art

[0002] Corrosion-resistant pressure pipes are a type of piping system used to transport corrosive media. They have special materials and designs to ensure long-term reliable operation in corrosive environments. These piping systems are typically used in the chemical, petroleum, natural gas, marine engineering and other fields, where the media may include acids, alkalis, brine, petroleum and other corrosive substances.

[0003] The flange connection of the corrosion-resistant pressure pipe is prone to leakage due to changes in internal pressure. The existing device uses a sleeve to be directly installed on the corrosion-resistant pressure pipe to deal with the leakage problem. However, the sleeve cannot be easily disassembled and assembled, and the strength of the sleeve cannot be adjusted according to the internal pressure of the pipe. When a strong sleeve is used to protect the pipe, the pressure on the pipe is too high, and the pipe will eventually deform due to long-term exposure to external pressure. When a weak sleeve is used to protect the pipe, the increase in internal pressure of the pipe will cause leakage at the flange connection. Therefore, a pipe component whose strength can be adjusted according to the internal pressure of the pipe is required. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a corrosion-resistant pressure pipeline and its components, which solve the problem that the strength of the pipeline component proposed in the above background technology cannot be adjusted according to the internal pressure of the pipeline.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A pressure pipe assembly comprises two mounting rings, the outer surfaces of the two mounting rings are fixedly mounted with a plurality of hinge seats, the inner sides of the two corresponding hinge seats are rotatably mounted with connecting rods, the ends of the plurality of connecting rods away from the hinge seats are rotatably mounted with capstan seats, one side of the plurality of capstan seats is commonly provided with a protective portion, the two mounting rings are connected to each other through a linkage member, and a pressure regulating portion is provided at the bottom of the linkage member; The protection part includes a plurality of arc plates, each of which is fixedly mounted on one side of the capstan seat, and two of the arc plates are connected to each other through a plug-in plate, and the outer wall of the plug-in plate is slidably mounted on the arc plate, and a plurality of compression springs are fixedly mounted on the inner sides of the plurality of arc plates, and a sleeve member is fixedly mounted on one end of the compression spring away from the arc plate; The plug board is a metal sheet made of stainless steel, and the thickness of the metal sheet is 2 mm.

[0006] Furthermore, the sleeve member includes a plurality of arc sleeves, the plurality of arc sleeves are fixedly mounted on one end of the corresponding plurality of compression springs, the plurality of arc sleeves are connected to each other via a connecting plate, and the outer wall of the connecting plate is slidably plugged and mounted with the arc sleeve; The arc-shaped sleeve plate and the connecting plate are both made of carbon fiber composite material.

[0007] Furthermore, a limit plate is fixedly installed on one side of the plug board and the connecting plate, the arc plate and the arc sleeve plate are hollow, and have openings on both sides, the opening width of the arc plate is smaller than the width of the limit plate on the plug board, and the opening width of the arc sleeve plate is smaller than the width of the limit plate on the connecting plate.

[0008] Furthermore, the connecting component includes two sliders, and the two sliders are respectively fixedly installed on the top of the two mounting rings, and a bidirectional lead screw is commonly threadedly installed inside the two sliders. Two support blocks are rotatably installed on the outer wall of the bidirectional lead screw, and the bottoms of the two support blocks are connected to the pressure adjustment part. A second bevel gear is fixedly installed in the middle of the outer wall of the bidirectional lead screw, and opposite threads are opened on both sides of the bidirectional lead screw, and the two sliders are respectively threadedly installed on both sides of the bidirectional lead screw.

[0009] The top of the movable frame is fixedly provided with a movable frame, and the bottom of the movable frame is fixedly provided with a movable frame.

[0010] A corrosion-resistant pressure pipeline comprises the above-mentioned pressure pipeline assembly, and also comprises a pipe body, a connecting pipe, and a connecting flange. There are two pipe bodies, and the connecting pipe is located between the two pipe bodies. The pipe body and the connecting pipe are connected to each other through a connecting flange. The two mounting rings are slidably mounted on the outer wall of the connecting pipe. The outer wall and inner wall of the pipe body and the connecting pipe are provided with an anti-corrosion layer. The anti-corrosion layer of the outer wall of the pipe body is a combination of an epoxy resin coating and a heat shrinkable tape. The anti-corrosion layers of the pipe body and the inner wall of the connecting pipe are both polytetrafluoroethylene coatings. The anti-corrosion layer of the outer wall of the connecting pipe is a combination of metal zinc and wear-resistant ceramic patches.

[0011] Furthermore, the epoxy resin coating is applied to the outer wall of the tube body, and the heat shrinkable tape is fixedly sleeved on the outer wall of the epoxy resin coating. The epoxy resin coating is 1 mm thick, and the polytetrafluoroethylene coating is 2 mm thick.

[0012] Furthermore, the metal zinc is electroplated on the outer wall of the connecting pipe, the thickness of the electroplated zinc is 10um-15um, and the wear-resistant ceramic patch is bonded to the outer wall of the metal zinc, the thickness of the wear-resistant ceramic patch is 3mm.

[0013] Furthermore, the plurality of arc-shaped sleeves are interconnected and combined into a sleeve, and sleeved on the outer wall of the tube body. The plurality of arc-shaped sleeves are fixedly installed with a rubber layer on the outer surface that fits the tube body, and the two mounting rings are fixedly installed with a nylon layer on the outer surface that fits the connecting tube, and the thickness of the nylon layer is 1 mm.

[0014] Furthermore, a plug hole is provided on the connecting pipe, the plug column is fixedly installed with the connecting pipe through the plug hole, and the movable ring is located inside the connecting pipe.

[0015] Compared with the prior art, the present invention has the following advantages: 1: The pressure pipe assembly designed by the present invention is combined into a casing by multiple arc sleeves, which can protect and position the pipeline, enhance the strength of the flange connection of the pipeline, and avoid stress concentration at the flange to cause water leakage. At the same time, the combined casing and the pipeline can be easily disassembled and assembled, and the compression spring and arc plate added to the outside of the casing can prevent the pipeline from being damaged by external force impact.

[0016] 2: The pressure pipe assembly designed by the present invention, when the pressure in the pipe increases, the flow rate and flow velocity of the water in the pipe will also increase accordingly. When the water flow increases, it will drive the movement of the moving ring, and the moving ring is used to gather the arc sleeve plates together. When the pressure in the pipe increases, the protection of the pipe is more sufficient, and the strength of the flange connection is higher, thereby playing a role in pressure compensation. When the pressure in the pipe is normal, the spring can drive the moving ring to reset, thereby reducing the pressure of the casing on the pipe and avoiding pipe deformation caused by long-term high pressure.

[0017] 3: The corrosion-resistant pressure pipeline designed by the present invention can avoid corrosion of the pipe body to a great extent through the anti-corrosion layer on the outer wall of the pipe body. At the same time, the static friction between the outer wall of the pipe body and the arc sleeve is large, which avoids the problem of the arc sleeve sliding forward and dislocating. The anti-corrosion layer on the outer wall of the connecting pipe has low friction and is very wear-resistant, which facilitates sliding cooperation with the mounting ring.

[0018] 4: The corrosion-resistant pressure pipe designed by the present invention has polytetrafluoroethylene as an anti-corrosion coating on the inner wall of the pipe body and the connecting pipe. The molecular chain structure of polytetrafluoroethylene is very regular, ensuring that its surface is smooth and not easy to produce sediment. At the same time, when a slight sediment or dirt appears, it is also easy to clean, and it can be cleaned by simple flushing or wiping.

[0019] To sum up, the pipeline designed by the present invention can avoid corrosion of the pipe body to a great extent through the anti-corrosion layer arranged on the outer wall of the pipe body and the connecting pipe; at the same time, the pipeline assembly used in conjunction with the pipeline is combined into a sleeve through multiple arc-shaped sleeve plates, which can protect and position the pipeline, enhance the strength of the flange connection of the pipeline, and avoid stress concentration at the flange causing water leakage. At the same time, the combined sleeve and the pipeline can be conveniently disassembled and assembled, and the compression spring and arc-shaped plate added to the outside of the sleeve can prevent the pipeline from being damaged by external force impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a corrosion-resistant pressure pipeline and its components proposed by the present invention.

[0021] Figure 2 This is a schematic diagram of the pressure pipeline structure.

[0022] Figure 3 for Figure 1 Schematic diagram of the structure of the medium pressure pipeline.

[0023] Figure 4 for Figure 3 Schematic diagram of part of the structure after rotation at a certain angle.

[0024] Figure 5 for Figure 4 Schematic diagram of the structure after the middle arc sleeve and the arc plate are separated.

[0025] Figure 6 It is a schematic diagram of the structure of the pressure-adapting part and some connecting components.

[0026] Figure 7 for Figure 6 Schematic diagram of the structure after the movable ring and the plug-in column are separated.

[0027] Figure 8 This is a schematic diagram of the structure after 7 is rotated by a certain angle.

[0028] Fig. 9 for Figure 8 Schematic diagram of the structure in which the movable ring, the plug-in column and some connecting components are removed.

[0029] Fig.10 This is a schematic diagram of the structure after the arc plate and arc sleeve plate are split and some parts are removed.

[0030] In the figure: 1. pipe body; 2. connecting pipe; 3. connecting flange; 4. plug-in hole; 5. plug-in column; 6. mounting plate; 7. moving ring; 8. moving cavity; 9. moving block; 10. spring; 11. rotating shaft; 12. fixed gear; 13. moving rack; 14. fixed block; 15. first bevel gear; 16. supporting block; 17. two-way lead screw; 18. second bevel gear; 19. moving groove; 20. slider; 21. mounting ring; 22. capstan seat; 23. connecting rod; 24. arc plate; 25. plug-in plate; 26. compression spring; 27. arc sleeve plate; 28. connecting plate; 29. ​​guide column; 30. guide hole; 31. positioning block. DETAILED DESCRIPTION

[0031] Reference Figure 2 A corrosion-resistant pressure pipeline comprises a pipe body 1, a connecting pipe 2 and a connecting flange 3. There are two pipe bodies 1. The outer wall and inner wall of the pipe body 1 and the connecting pipe 2 are both provided with an anti-corrosion layer. The anti-corrosion layer on the outer wall of the pipe body 1 is composed of an epoxy resin coating and a heat shrink tape. The epoxy resin coating is 1 mm thick. The epoxy resin coating is applied to the outer wall of the pipe body 1. The heat shrink tape is fixedly sleeved on the outer wall of the epoxy resin coating. The anti-corrosion layer formed by the epoxy resin coating and the heat shrink tape is a combination of the epoxy resin coating and the heat shrink tape. The heat shrink tape has a super strong anti-corrosion performance and can also be waterproof and increase friction to prevent the components attached to the outer wall from being misaligned and scratching the anti-corrosion layer. The anti-corrosion layer on the inner wall of the pipe body 1 is polytetrafluoroethylene. The thickness of polytetrafluoroethylene is 2 mm. Polytetrafluoroethylene has the characteristics of low friction and easy cleaning. While providing anti-corrosion ability, it can also reduce the generation of deposits on the inner wall of the pipe. The anti-corrosion layer of the outer wall of the connecting pipe 2 is composed of electroplated metal and wear-resistant ceramic patches. The outer wall of the connecting pipe 2 is electroplated with anti-corrosion metal, and the anti-corrosion metal is zinc. The thickness of the electroplated zinc is 10um-15um. The wear-resistant ceramic patch is bonded to the outer wall of the zinc layer. The thickness of the wear-resistant ceramic patch is 3mm. The use of wear-resistant ceramic patches for anti-corrosion can prevent the sliding components on the connecting pipe 2 from scratching the anti-corrosion layer of the connecting pipe 2, while reducing friction and making sliding more convenient. Electroplating of anti-corrosion metal zinc can prevent corrosion at the connection gap of the wear-resistant ceramic patch. The anti-corrosion layer on the inner wall of the connecting pipe 2 is polytetrafluoroethylene.

[0032] There are four connecting flanges 3, two of which are fixedly mounted at the ends of the two pipe bodies 1 close to each other, and the other two connecting flanges 3 are fixedly mounted at both ends of the connecting pipe 2. The four connecting flanges 3 are of the same model and can cooperate with each other.

[0033] Reference Figure 1 - Figure 5, a pressure pipe assembly, including two mounting rings 21 sleeved on the outer wall of the connecting pipe 2, multiple hinge seats are fixedly installed on the outer surfaces of the two mounting rings 21, and connecting rods 23 are rotatably installed on the inner sides of the multiple hinge seats, and a capstan 22 is rotatably installed on the ends of the multiple connecting rods 23 away from the hinge seats. When the two mounting rings 21 approach each other, the multiple connecting rods 23 will be pulled together. A curved plate 24 is fixedly installed on one side of the multiple capstan 22. When the multiple connecting rods 23 gather together, the multiple curved plates 24 are driven to gather together. The multiple curved plates 24 are connected to each other through a plug-in plate 25. The plug-in plate 25 is made of metal sheet, such as stainless steel, aluminum alloy, titanium alloy and other metals. The plug-in plate 25 has a certain curvature and a certain elasticity. It has the elasticity to deform when the curved plates 24 gather together. If the plug-in plate 25 is not elastic, the curvature of the plug-in plate 25 itself cannot be changed, which prevents the curved plates 24 from gathering together.

[0034] Reference Figure 1 - Figure 5 Multiple compression springs 26 are fixedly installed on the inner side of the outer wall of multiple arc-shaped plates 24, and multiple compression springs 26 form a group. (For details, refer to Figure 5 ) A group of compression springs 26 are installed with an arc sleeve plate 27 at the other end away from the arc plate 24. The multiple arc sleeve plates 27 are connected to each other through a connecting plate 28. The arc sleeve plates 27 and the connecting plate 28 are made of high-strength and ductile materials. They can be deformed accordingly as the spacing changes to ensure the fitting effect with the tube body 1. Specifically, they can be carbon fiber composite materials. The carbon fiber composite material is composed of carbon fiber and resin, and has the characteristics of high strength, light weight, good ductility, etc.; A plurality of arc-shaped sleeves 27 are combined into a sleeve, which is sleeved on the outer wall of the tube body 1. The interiors of the plurality of arc-shaped plates 24 and the arc-shaped sleeves 27 are hollow, and openings connected to each other are opened on both sides. Limiting plates are installed at both ends of the plug-in plate 25 and the connecting plate 28. The limiting width of the plug-in plate 25 is greater than the opening width of the arc-shaped plate 24. The limiting plate of the plug-in plate 25 slides and fits on the inner wall of the arc-shaped plate 24. The limiting plate width of the connecting plate 28 is greater than the opening width of the arc-shaped sleeve 27. The limiting plate of the connecting plate 28 is slidably installed on the inner wall of the arc-shaped sleeve 27. The sliding of the plug-in plate 25 and the connecting plate 28 is limited by the limiting plate to prevent the plug-in plate 25 and the connecting plate 28 from detaching from the arc-shaped plate 24 and the arc-shaped sleeve 27. In the initial stage, the arc-shaped sleeve 27 and the arc-shaped sleeve 24 are both in the maximum expansion state limited by the limiting plate. Subsequently, the arc-shaped plate 24 and the arc-shaped sleeve 27 are brought together according to the pressure change.

[0035] A rubber layer is fixedly installed on the outer surface of multiple arc sleeves 27 that are in contact with the tube body 1, so as to increase static friction and prevent dislocation, and avoid scratching the anti-corrosion layer of the tube body 1. The outer surfaces of the two mounting rings 21 that are in contact with the connecting tube 2 are fixedly installed with a polyamide nylon layer. The thickness of the polyamide nylon layer is 1 mm, which reduces the friction coefficient and facilitates the sliding of the mounting ring 21 on the outer wall of the connecting tube 2. At the same time, it has wear resistance and is not easy to be damaged. Multiple arc sleeves 27 are interconnected and cooperated to be used as sleeves of the tube body 1, which increases the strength of the tube body 1 and avoids leakage and damage at the joints. The cooperation of multiple compression springs 26 and multiple arc plates 24 enables the multiple arc sleeves 27 to have a certain moving space, thereby reducing vibration.

[0036] Reference Figure 1 , Figure 5 - Fig.10 A slider 20 is fixedly installed on the top of the two mounting rings 21, and a bidirectional lead screw 17 is installed on the internal thread of the slider 20. Opposite threads are provided on both sides of the bidirectional lead screw 17. The two sliders 20 are respectively threadedly installed on both sides of the bidirectional lead screw 17. Two support blocks 16 are rotatably installed on the outer wall of the bidirectional lead screw 17. The support blocks 16 can fix the position of the bidirectional lead screw 17. A positioning block 31 is fixedly installed on both ends of the bidirectional lead screw 17. The positioning block 31 provides a limit to prevent the slider 20 from detaching from the bidirectional lead screw 17. A second bevel gear 18 is fixedly installed in the middle of the outer surface of the bidirectional screw 17, and the outer surface of the second bevel gear 18 is meshed with the first bevel gear 15. A plug-in column 5 is commonly installed at the bottom of the two support blocks 16, and a moving cavity 8 is provided in the plug-in column 5. A rotating shaft 11 is fixedly installed at the bottom of the first bevel gear 15, and the rotating shaft 11 rotates and penetrates and is installed on the top wall of the plug-in column 5. A fixed gear 12 is fixedly installed at the bottom of the rotating shaft 11, and a moving rack 13 is meshed on the outer surface of the fixed gear 12. A fixed block 14 is fixedly installed at the bottom of the moving rack 13. A moving groove 19 matching the moving rack 13 is provided in the plug-in column 5, a fixed block 14 is fixedly installed at the bottom of the moving rack 13, and a moving block 9 is fixedly installed at the bottom of the fixed block 14. A guide hole 30 is provided inside the moving block 9, and a guide column 29 is slidably inserted in the moving block 9 through the guide hole 30. The guide column 29 is located in the moving cavity 8, and a spring 10 is fixedly installed on one side of the moving block 9, and the spring 10 is located in the moving cavity 8.

[0037] A moving ring 7 is fixedly installed at the bottom of the moving block 9, a plug hole 4 is opened on the connecting pipe 2, and the plug column 5 is fixedly installed on the connecting pipe 2 through the plug hole 4. The moving ring 7 is located inside the connecting pipe 2, and a mounting plate 6 is fixedly installed at the bottom of the plug column 5 and on the periphery of the moving cavity 8.

[0038] When the pressure increases, the force pushing the moving ring 7 will also increase accordingly. The moving ring 7 pushes the guide hole 30 to slide on the outer wall of the guide column 29, overcomes the resilience of the spring 10, stretches the spring 10, drives the moving rack 13 to move, and drives the fixed gear 12 to rotate through the moving rack 13. The rotation of the fixed gear 12 can drive the rotating shaft 11 and the first bevel gear 15 to rotate, and the second bevel gear 18 and the bidirectional lead screw 17 to rotate through the rotation of the first bevel gear 15. The slider 20 and the mounting ring 21 are rotated through the rotation of the bidirectional lead screw 17. When the mounting rings 21 are close to each other, the angle of the connecting rod 23 can be reduced, and the arc plates 24 can be pulled together, compressing the compression spring 26 and the arc sleeve plate 27, so that the arc sleeve plate 27 gathers together, and the protection force on the pipeline is increased while the pressure increases; Since high-pressure pipelines are mainly used to transport high-pressure and ultra-high-pressure fluid media, the liquid flow rate inside them is generally higher than that of ordinary pipelines. When the pressure inside the high-pressure pipe is normal, the driving force exerted by the high-pressure fluid medium inside it on the moving ring 7 cannot overcome the rebound force of the spring 10. At this time, the moving ring 7 will not move. When the pressure in the pipeline continues to increase, the driving force of the high-pressure fluid medium inside it on the moving ring 7 continues to increase, which will break through the rebound force of the spring 10. At this time, the moving ring 7 is pushed, driving the arc-shaped sleeve plates 27 to gather together.

[0039] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0040] The working principle of a corrosion-resistant pressure pipeline and its components in the present invention is as follows; First, the pipeline is assembled. When assembling, the two pipe bodies 1 are respectively inserted into the sleeves composed of multiple arc sleeve plates 27, so that the pipe body 1 and the connecting flange 3 on the connecting pipe 2 match each other. After screwing in the bolts, the installation is completed. When disassembling, the bolts are loosened to pull the pipe body 1 out of the sleeve. A plurality of arc-shaped sleeve plates 27 are interconnected to form a sleeve, which protects the tube body 1 . The compression spring 26 and the arc-shaped plate 24 arranged on the outer wall of the arc-shaped sleeve plate 27 can provide protection and buffering for the arc-shaped sleeve plate 27 .

[0041] When the pressure in the tube body 1 increases, the movable ring 7 moves in the tube body 1 due to the pressure, overcoming the elastic force of the spring 10. At this time, under the action of the movable rack 13 and the fixed gear 12, the first bevel gear 15 drives the second bevel gear 18 to rotate, so the two sliders 20 on the bidirectional lead screw 17 will approach each other. At this time, because the inner side of the arc sleeve plate 27 is buckled with the connecting flange 3, it will not be driven to slide. Then, under the action of the multiple connecting rods 23, the multiple arc plates 24 are close to each other and retracted; At this time, the multiple compression springs 26 are in a compressed state, so the multiple arc sleeve plates 27 are close to each other, providing more stable support to the outer wall of the tube body 1. Conversely, when the pressure decreases, the multiple springs 10 are reset to make the second bevel gear 18 rotate in the opposite direction, so that the two sliders 20 move away from each other, so that the multiple arc plates 24 open to each other, reducing the pressure applied to the outer wall of the tube body 1.

[0042] The plurality of arc-shaped plates 24 are connected to each other by plug-in plates 25. The plug-in plates 25 are metal sheets made of stainless steel and have a certain elasticity, which can adapt to the gathering of the arc-shaped plates 24. Multiple arc-shaped sleeves 27 are connected to each other by connecting plates 28. The arc-shaped sleeves 27 and the connecting plates 28 are made of high-strength materials with a certain degree of ductility. They can deform accordingly as the spacing changes to ensure the fit with the tube body 1. Specifically, they can be carbon fiber composite materials. The carbon fiber composite material is composed of carbon fiber and resin, and has the characteristics of high strength, light weight, and good ductility.

[0043] The external anti-corrosion layer of the pipe body 1 is made of epoxy resin and heat shrink tape. The heat shrink tape is in contact with the rubber layer of the arc sleeve 27. The static friction between the two is large and it is not easy to slip and dislocate. The outer wall anti-corrosion layer of the connecting pipe 2 is composed of electroplated zinc and wear-resistant ceramic patches. The mounting ring 21 is in contact with the wear-resistant ceramic patches through nylon, which reduces the friction between the connecting pipe 2 and the mounting ring 21, enhances the wear resistance, and prevents the mounting ring 21 from scratching the anti-corrosion layer on the connecting pipe 2. The anti-corrosion layers on the inner walls of the connecting pipe 2 and the pipe body 1 are both made of polytetrafluoroethylene. After long-term use of the pipeline, sediment will be generated, and the sediment will cause the pressure in the pipeline to increase. The low friction and easy-to-clean characteristics of polytetrafluoroethylene reduce the accumulation of sediment.

[0044] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A pressure pipe assembly comprising two mounting rings (21), characterized in that: A plurality of hinge seats are fixedly mounted on the outer surfaces of the two mounting rings (21), a connecting rod (23) is rotatably mounted on the inner sides of the two corresponding hinge seats, a capstan seat (22) is rotatably mounted on one end of the plurality of connecting rods (23) away from the hinge seat, a protective portion is commonly provided on one side of the plurality of capstan seats (22), the two mounting rings (21) are connected to each other via a linkage member, and a pressure adjustment portion is provided at the bottom of the linkage member; The protection part comprises a plurality of arc-shaped plates (24), each of the arc-shaped plates (24) being fixedly mounted on one side of the capstan seat (22), two of the arc-shaped plates (24) being connected to each other via a plug-in plate (25), an outer wall of the plug-in plate (25) being slidably mounted on the arc-shaped plates (24), a plurality of compression springs (26) being fixedly mounted on the inner sides of the plurality of arc-shaped plates (24), and a sleeve member being fixedly mounted on one end of the compression spring (26) away from the arc-shaped plates (24); The plug board (25) is a metal sheet made of stainless steel, and the thickness of the metal sheet is 2 mm.

2. A pressure pipe assembly according to claim 1, characterized in that: The sleeve member comprises a plurality of arc-shaped sleeve plates (27), the plurality of arc-shaped sleeve plates (27) being fixedly mounted on one end of a corresponding plurality of compression springs (26), the plurality of arc-shaped sleeve plates (27) being connected to each other via a connecting plate (28), and the outer wall of the connecting plate (28) being installed in a sliding plug-in manner with the arc-shaped sleeve plates (27); The arc-shaped sleeve plate (27) and the connecting plate (28) are both made of carbon fiber composite material.

3. A pressure pipe assembly according to claim 2, characterized in that: The plug-in board (25) and the connecting board (28) are both fixedly mounted with a limit plate on one side; the arc-shaped plate (24) and the arc-shaped sleeve plate (27) are both hollow and have openings on both sides; the opening width of the arc-shaped plate (24) is smaller than the width of the limit plate on the plug-in board (25); and the opening width of the arc-shaped sleeve plate (27) is smaller than the width of the limit plate on the connecting board (28).

4. A pressure pipe assembly according to claim 3, characterized in that: The connecting member comprises two sliders (20), the two sliders (20) are respectively fixedly mounted on the tops of the two mounting rings (21), a bidirectional lead screw (17) is commonly threadedly mounted inside the two sliders (20), two support blocks (16) are rotatably mounted on the outer wall of the bidirectional lead screw (17), the bottoms of the two support blocks (16) are mutually connected to the pressure adjustment part, a second bevel gear (18) is fixedly mounted in the middle of the outer wall of the bidirectional lead screw (17), opposite threads are formed on both sides of the bidirectional lead screw (17), and the two sliders (20) are respectively threadedly mounted on both sides of the bidirectional lead screw (17).

5. A pressure pipe assembly according to claim 4, characterized in that: The pressure-adjusting portion comprises a plug-in column (5), wherein the plug-in column (5) is fixedly mounted at the bottom of two support blocks (16), a movable cavity (8) is provided in the plug-in column (5), a mounting plate (6) is fixedly mounted at the bottom of the plug-in column (5) and on the periphery of the movable cavity (8), a rotating shaft (11) is rotatably penetrated through the top wall of the plug-in column (5), a first bevel gear (15) is fixedly mounted at the top of the rotating shaft (11), a fixed gear (12) is fixedly mounted at the bottom of the rotating shaft (11), an outer surface of the first bevel gear (15) meshes with a second bevel gear (18), an outer surface of the fixed gear (12) meshes with a movable rack (13), and the plug-in column (5) is provided with a plurality of movable racks (13) and a plurality of movable racks (13) are provided on the outer surface of the movable racks (13). A moving groove (19) matching with the moving rack (13) is provided in the column (5); a fixed block (14) is fixedly installed at the bottom of the moving rack (13); a moving block (9) is fixedly installed at the bottom of the fixed block (14); a guide hole (30) is provided inside the moving block (9); a guide column (29) is slidably installed on the moving block (9) through the guide hole (30); both ends of the guide column (29) are fixedly installed with the plug-in column (5); a moving ring (7) is fixedly installed at the bottom of the moving block (9); a spring (10) is fixedly installed on one side of the moving block (9); and the other end of the spring (10) is fixedly installed on the inner wall of the plug-in column (5).

6. A corrosion-resistant pressure pipeline, comprising a pressure pipeline assembly according to claim 5, characterized in that: The invention also comprises a pipe body (1), a connecting pipe (2), and a connecting flange (3), wherein the number of the pipe bodies (1) is two, the connecting pipe (2) is located between the two pipe bodies (1), the pipe body (1) and the connecting pipe (2) are connected to each other via the connecting flange (3), the two mounting rings (21) are both slidably mounted on the outer wall of the connecting pipe (2), the outer wall and the inner wall of the pipe body (1) and the connecting pipe (2) are both provided with an anti-corrosion layer, the anti-corrosion layer of the outer wall of the pipe body (1) is a combination of an epoxy resin coating and a heat shrinkable tape, the anti-corrosion layers of the inner walls of the pipe body (1) and the connecting pipe (2) are both polytetrafluoroethylene coatings, and the anti-corrosion layer of the outer wall of the connecting pipe (2) is a combination of metal zinc and a wear-resistant ceramic patch.

7. The corrosion-resistant pressure pipeline according to claim 6, characterized in that: The epoxy resin coating is applied to the outer wall of the tube body (1), and the heat shrinkable tape is fixedly sleeved on the outer wall of the epoxy resin coating. The epoxy resin coating has a thickness of 1 mm, and the polytetrafluoroethylene coating has a thickness of 2 mm.

8. The corrosion-resistant pressure pipeline according to claim 6, characterized in that: The metal zinc is electroplated on the outer wall of the connecting pipe (2), and the thickness of the electroplated zinc is 10um-15um. The wear-resistant ceramic patch is bonded to the outer wall of the metal zinc, and the thickness of the wear-resistant ceramic patch is 3mm.

9. The corrosion-resistant pressure pipeline according to claim 6, characterized in that: The plurality of arc-shaped sleeves (27) are interconnected to form a sleeve and sleeved on the outer wall of the tube body (1). The plurality of arc-shaped sleeves (27) are all fixedly mounted with a rubber layer on their outer surfaces in contact with the tube body (1). The two mounting rings (21) are all fixedly mounted with a nylon layer on their outer surfaces in contact with the connecting tube (2). The thickness of the nylon layer is 1 mm.

10. The corrosion-resistant pressure pipeline according to claim 6, characterized in that: The connecting pipe (2) is provided with a plug hole (4), the plug column (5) is fixedly mounted on the connecting pipe (2) through the plug hole (4), and the movable ring (7) is located inside the connecting pipe (2).

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