An ultra-thin anticorrosion wear-resistant composite pipe and a vertical assembly method thereof

Abstract

The application discloses a kind of ultra-thin anticorrosion wear-resistant composite pipe and vertical assembly method thereof, the composite pipe includes the steel pipe (4) with flange on upper and lower ends, anticorrosive layer (2) close to the inner wall of steel pipe, non-metallic wear-resistant lining pipe (1) is arranged in anticorrosive layer, filling cement layer (31) is filled in assembly gap (3) between non-metallic wear-resistant lining pipe and anticorrosive layer;The anticorrosive layer flange is folded to the sealing end face;The non-metallic wear-resistant lining pipe is stacked by a group of cylindrical lining pipe units, and the upper end and the lower end of each lining pipe unit are respectively provided with tenon (1a) and mortise (1b) which can be connected with each other.The application can greatly reduce the thickness of anticorrosive layer, non-metallic wear-resistant lining pipe and outer sleeve steel pipe of multiple composite anticorrosion wear-resistant pipe, greatly reduce the weight of composite pipe, greatly reduce production cost, and improve the flatness of inner wall of composite pipe, keep the service life of composite pipe from being shortened.

Description

Technical Field

[0001] This invention belongs to the technical field of conveying pipelines for acid- and solid-containing slurries and their manufacturing methods in the metallurgical and chemical industries. Background Technology

[0002] In the metallurgical and chemical industries, there are many types of pipes used for conveying acidic and solid slurries, especially composite corrosion-resistant and wear-resistant pipes such as steel + fluorine + silicon carbide, steel + lead + silicon carbide, and steel + rubber + silicon carbide. These pipes have a long service life, are acid- and wear-resistant, and can withstand high temperatures, positive pressure, and negative pressure. However, current technologies for manufacturing pipes for conveying acidic and solid slurries all use horizontal assembly processes, which have the following shortcomings in the manufacturing process and the pipes produced:

[0003] 1. The anti-corrosion lining is too thick. The reason is that the non-metallic wear-resistant lining to be assembled later has high hardness, and there is a possibility of scratching the anti-corrosion lining during horizontal assembly. Therefore, the actual thickness of the anti-corrosion layer consists of two parts: the working thickness required for anti-corrosion and the safety thickness required to prevent scratches. The thickness is difficult to reduce.

[0004] 2. The non-metallic wear-resistant liner wall is too thick. In the horizontal assembly process, the butt joint assembly of the non-metallic wear-resistant liner is carried out inside the steel pipe and is not visible. Each section of the wear-resistant liner must be pushed from one end of the steel pipe along the lower part of the inner wall to a certain depth to align with the previously installed inner liner. To prevent the wear-resistant liner from scratching or even breaking the anti-corrosion layer during the pushing process, a layer of protective mortar needs to be applied to the outer surface of the wear-resistant liner. Some of the protective mortar will adhere to and / or fall onto the lower part of the anti-corrosion layer of the steel pipe, causing the wear-resistant liner to be misaligned, thus creating a misalignment at the joint. Because only part of the end face is butted at the joint, the wall thickness of the wear-resistant liner must be increased to ensure an absolute seal at the joint.

[0005] 3. Theoretically, the smaller the assembly gap, the easier the alignment and the smaller the misalignment. However, in reality, during the assembly of wear-resistant liners, one or both end faces are coated with sealing putty. This putty applied to the end faces can slide downwards or even fall onto the lower anti-corrosion layer during the pushing and assembly process. If the gap is too small and there is too much putty at the bottom, a "vacuum lining" phenomenon may occur, where the lower putty blocks the upper liner end face from aligning. Vacuum lining is a serious quality issue that must be prevented. However, since the butt-jointing assembly process of wear-resistant liners takes place inside the steel pipe, it is invisible, making it difficult to detect and remedy vacuum lining in a timely manner. To prevent vacuum lining, the gap must be increased, but the larger the gap, the more difficult the alignment, the greater the misalignment, and the lower the assembly accuracy.

[0006] In summary, existing composite corrosion-resistant and wear-resistant pipes designed and manufactured using traditional horizontal assembly processes have large outer diameters, thick linings, heavy weights, large misalignment differences, high conveying resistance, and high production costs, which severely limit the promotion and application of these products. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide an ultra-thin anti-corrosion and wear-resistant pipe with multiple composites, including a thin anti-corrosion layer, thin wear-resistant inner liner, small steel pipe outer diameter, and small assembly gap, which has a small outer diameter, thin outer liner, light weight, small misalignment, low conveying resistance, low production cost, high overall cost performance, long service life, and requires no maintenance.

[0008] The objective of this invention is achieved through the following technical solution:

[0009] An ultra-thin anti-corrosion and wear-resistant composite pipe includes a steel pipe with flanges at both ends, an anti-corrosion layer tightly attached to the inner wall of the steel pipe, a non-metallic wear-resistant liner disposed within the anti-corrosion layer, and a filling mortar layer filling the assembly gap between the non-metallic wear-resistant liner and the anti-corrosion layer; the anti-corrosion layer is flanged to the sealing end face of the flange; the non-metallic wear-resistant liner is composed of a set of cylindrical liner units stacked together, and each liner unit has a tenon and a tongue that can be connected to each other at its upper and lower ends.

[0010] Furthermore, the wall thickness of the non-metallic wear-resistant liner does not exceed 5 mm + 3% of the outer diameter of the steel pipe, the thickness of the anti-corrosion layer does not exceed 3 mm, the assembly gap (3) does not exceed 5 mm, and the misalignment difference between adjacent liner units does not exceed 1 mm.

[0011] The vertical assembly method of the ultra-thin anti-corrosion and wear-resistant composite pipe of the present invention comprises the following steps:

[0012] S1. Set an assembly base plate, set a tie rod connector on the assembly base plate, connect a central tie rod to the tie rod connector, and set a liner locator with the same center as the tie rod connector around the tie rod connector; set a guide limiting device with the same center as the liner locator around the liner locator.

[0013] S2. Assemble the non-metallic wear-resistant liner: Place the first liner unit on the assembly base plate and fit it over the liner locator. Then stack the subsequent liner units one by one, and snap the tenon on the bottom surface of the upper liner unit onto the tenon on the top surface of the lower liner unit until the stacking reaches the designed height, and assemble it into a vertically upward non-metallic wear-resistant liner.

[0014] S3. Connect the central tie rod to the tie rod connector, pass the pressure plate with the central hole through the central tie rod and press it onto the top of the non-metallic wear-resistant liner, install the clamping device on the central tie rod, clamp the pressure plate, and then clamp the non-metallic wear-resistant liner.

[0015] S4. Lift up the steel pipe with the pre-lined anti-corrosion layer, and under the guidance of the guide and limit device, put the steel pipe vertically downwards onto the non-metallic wear-resistant liner and keep it coaxial with the non-metallic wear-resistant liner.

[0016] S5. Fill the assembly gap between the non-metallic wear-resistant liner and the anti-corrosion layer with sealing slurry. After the sealing slurry solidifies, it forms a filling mortar layer, thus completing the assembly of a section of anti-corrosion and wear-resistant pipe composed of multiple composite components, including a steel pipe, an anti-corrosion layer, and a non-metallic liner.

[0017] Furthermore, the pull rod connector mentioned in step S1 is a nut that matches the center connecting rod, or a bayonet that matches the center pull rod.

[0018] Furthermore, the central tie rod has threads at both ends, or one end has threads and the other end has a locking mechanism.

[0019] Furthermore, the liner locator mentioned in step S1 is a cylinder, a ring, or multiple columns distributed on the same circumference.

[0020] Furthermore, the clamping assembly described in step S3 is a nut that matches the thread of the central tie rod.

[0021] Furthermore, the guide limiting device includes a steel pipe limiter at the bottom and a vertical guide rod inserted into the limiter. The limiter is a ring or multiple columns arranged on the same circumference.

[0022] Furthermore, before assembling the non-metallic wear-resistant liner in step S2 above, a sealing gasket is first laid between the liner positioner and the guide limiting device.

[0023] Furthermore, in step S5 above, the filling slurry introduction device can be placed on the top surface of the anti-corrosion layer, with its inner wall facing the inner wall of the anti-corrosion layer, and the sealing slurry can be poured into it and injected into the assembly gap to gradually fill the gap.

[0024] Furthermore, in step S2 above, when assembling the non-metallic wear-resistant liner, first fill the tenon of the two adjacent liner units with sealant, then connect the two liner units together, press and correct them, squeeze out and remove the excess sealant.

[0025] Furthermore, the assembly base plate is installed on a vibration platform. When the sealing slurry is injected into the assembly gap, the vibration platform vibrates to compact the injected sealing slurry.

[0026] The beneficial effects of this invention are: this invention can reduce the thickness of the anti-corrosion layer of the multi-composite anti-corrosion and wear-resistant pipe of steel pipe, anti-corrosion layer and non-metallic wear-resistant liner by 1 / 2 to 1 / 3, reduce the thickness of the non-metallic wear-resistant liner by 1 / 2 to 2 / 5, reduce the assembly gap by 1 / 2 to 4 / 5, reduce the misalignment difference by 95%, reduce the single weight of the anti-corrosion and wear-resistant pipe by about 45%, and reduce the production cost by about 40%. At the same time, it maintains the maintenance-free service life of the anti-corrosion and wear-resistant pipe to meet the design requirements. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the composite corrosion-resistant and wear-resistant pipe of the present invention;

[0028] Figure 2 This is an assembly diagram of the composite corrosion-resistant and wear-resistant pipe of the present invention;

[0029] Figure 3 This is a schematic diagram of the assembly of the composite anti-corrosion and wear-resistant pipe liner of the present invention. Implementation

[0030] The invention will now be further described in conjunction with the accompanying drawings.

[0031] like Figure 1 As shown, the ultra-thin anti-corrosion and wear-resistant composite pipe of the present invention includes a steel pipe 4 with flanges at both ends, an anti-corrosion layer 2 tightly attached to the inner wall of the steel pipe, a non-metallic wear-resistant liner 1 disposed within the anti-corrosion layer, and a filling mortar layer 31 filling the assembly gap 3 between the non-metallic wear-resistant liner and the anti-corrosion layer. The anti-corrosion layer tightly attached to the inner wall of the steel pipe is flanged to the sealing end face of the flange. The non-metallic wear-resistant liner is composed of a set of cylindrical liner units stacked together. Each liner unit has a tenon 1a and a tenon 1b at its upper and lower ends, respectively, which can be connected to each other. Alternatively, the tenon 1a can be placed at the lower end of the liner unit, and the tenon 1b can be placed at the upper end of the liner unit. The non-metallic wear-resistant liner 1 can be a silicon carbide pipe, a corundum pipe, etc.; the anti-corrosion layer 2 can be a PTFE sprayed anti-corrosion layer, a PTFE liner, a rubber liner, etc. The composite of the anti-corrosion layer and the steel pipe can be achieved using existing technology.

[0032] The ultra-thin anti-corrosion and wear-resistant composite pipe of this invention adopts a vertical assembly method, such as... Figure 2 , Figure 3 As shown, the method steps are as follows:

[0033] S1. Set an assembly base plate 5, set a central tie rod connector 51 on the assembly base plate, connect a central tie rod 6 to the tie rod connector, and set a liner locator 11 with the same center as the tie rod connector 51 around the tie rod connector; set a guide limiting device 9 with the same center as the liner locator around the liner locator.

[0034] To improve production efficiency, the assembly base plate 5 is mounted on the vibration platform 13. During subsequent filling of the sealing grout, the platform vibration is activated to accelerate grout injection and compact the sealing grout. Existing technology can be used for the vibration platform. Figure 3 This is just an illustration.

[0035] The pull rod connector 51 can be a nut with an inlet tapered opening, where the lower end screw of the central pull rod 6 is directly screwed into the nut to connect to the assembly base plate 5; or it can be an L-shaped slot with a bayonet structure, where the lower end of the central pull rod is inserted into the L-shaped slot and rotated into place to connect to the assembly base plate. Further details are omitted.

[0036] The upper end of the central tie rod 6 is a screw structure. When the pressure plate 7 with the center hole passes through the upper end of the tie rod and presses against the upper end of the wear-resistant liner 1, the nut, which is the clamping device 12, is used to tighten the central tie rod, thereby clamping the liner. Similarly, there are many other clamping structures at the upper end of the central tie rod 6, which will not be described in detail here.

[0037] The guiding and limiting device 9 includes a bottom limiter 91 and a vertical guide rod 92 inserted into the limiter. The limiter can be annular, arranged on a circumference concentric with the liner locator 11. The inner diameter of the annulus is the same as or slightly larger than the outer diameter of the steel pipe flange. Alternatively, the limiter can be multiple columns arranged on concentric circles. The columns can be cylindrical, square, or triangular, etc., and their inner diameter is the same as or slightly larger than the outer diameter of the steel pipe flange. In short, the shape and size of the limiting device 9 only need to accurately guide the steel pipe into the installation position.

[0038] S2. Assemble the non-metallic wear-resistant liner: Place the first liner unit on the assembly base plate 5 and fit it over the liner locator 11. Then, stack the subsequent liner units one by one, locking the tenon 1b on the bottom surface of the upper liner unit onto the tenon 1a on the top surface of the lower liner unit, until the stacking reaches the designed height, assembling a vertically upward-facing non-metallic wear-resistant liner 1. Before assembling the non-metallic wear-resistant liner 1, it is best to lay a sealing gasket 8 between the liner locator 11 and the guide limiting device 9 to prevent leakage when filling the sealing slurry later. Preferably, when stacking the liner units layer by layer, first fill the tenon of two adjacent liner units with sealing putty, then butt the two liner units together, press and correct them, squeeze out and remove excess sealing putty, further enhancing the connection strength and sealing performance between the liner units. The sealing putty can be made of existing technology and commonly used materials.

[0039] This step employs a full-size, visible, vertical assembly method for the liner tubes. This allows for alignment and straightening of the tenons and tenons at both ends of the liner tube unit, ensuring the inner tube is straight, eliminating misalignment, and promptly removing excess sealant from the joints. This provides the necessary conditions for subsequent small-gap installation of the outer tube and filling with sealant grout after installation. The tenon and tenon mating structure allows for effective sealing of the joints with only a small amount of sealant during liner tube unit assembly, preventing grout leakage during sealant injection and enabling the thinning of the non-metallic wear-resistant liner tube.

[0040] S3. Insert the central tie rod 6 into the tie rod connector 51 and connect it securely; pass the pressure plate 7 with the center hole through the upper end of the central tie rod and press it onto the top of the non-metallic wear-resistant liner 1; install the clamping device 12 on the central tie rod, tighten the pressure plate, and pull the central tie rod taut and straight, thereby clamping the non-metallic wear-resistant liner to prevent displacement during subsequent construction. A simple clamping device 12 is a lock nut, which can be tightened. Alternatively, other existing structures that facilitate quick clamping and locking can also be used.

[0041] S4. The steel pipe 4, pre-lined with the anti-corrosion layer 2, is hoisted up and, guided by the guide limiting device, vertically fitted from top to bottom onto the non-metallic wear-resistant liner 1, maintaining coaxiality with the non-metallic wear-resistant liner. Finally, the bottom flange of the steel pipe 4 falls into the locator 91. The vertical guide rod 92 limits the swing amplitude of the steel pipe within the assembly gap 3. Since the fitting process is visible, with manual control, the steel pipe will not rub against the non-metallic wear-resistant liner during fitting, thus ensuring that the anti-corrosion layer 2 is not scratched or damaged by the wear-resistant liner 1 during assembly. This also ensures that the sealing of each joint on the assembled non-metallic wear-resistant liner and the straightness of the entire inner surface of the liner are not affected, ensuring that the misalignment difference is close to zero.

[0042] S5. Fill the assembly gap 3 between the non-metallic wear-resistant liner 1 and the anti-corrosion layer 2 with sealing grout. After the sealing grout solidifies, it forms a filling mortar layer 31, thus completing the assembly of a multi-composite anti-corrosion and wear-resistant pipe consisting of a steel pipe, an anti-corrosion layer, and a non-metallic liner. To improve the injection efficiency of the sealing grout and prevent grout overflow from contaminating the outer surface of the steel pipe, a pre-prepared grout inlet device 10 can be placed on the top surface of the anti-corrosion layer 2. The funnel-shaped grout inlet device is connected and fixed to the steel pipe flange with connecting bolts 14 to prevent the grout inlet device from loosening. The inner wall of the grout inlet device faces the assembly gap 3 between the non-metallic wear-resistant liner and the anti-corrosion layer. The sealing grout is injected into the assembly gap through the funnel-shaped grout inlet device, gradually filling the gap. When injecting the sealing grout into the assembly gap 3, the vibration platform is started to quickly compact the injected sealing grout and prevent voids from appearing in the filling mortar layer.

[0043] This invention employs a vertical assembly method with full-size visible assembly of wear-resistant liners. The composite anti-corrosion and wear-resistant pipe produced using this method has a non-metallic wear-resistant liner 1 with a wall thickness not exceeding 5 mm + 3% of the steel pipe's outer diameter, an anti-corrosion layer 2 with a thickness not exceeding 3 mm, and an assembly gap 3 not exceeding 5 mm; the misalignment between adjacent liner units does not exceed 1 mm. Compared to existing horizontal assembly processes for producing composite anti-corrosion and wear-resistant pipes, the wall thickness of the non-metallic wear-resistant liner can be reduced to 1 / 2 to 1 / 3 of the commonly used non-metallic wear-resistant liner thickness, the thickness of the anti-corrosion layer can be reduced to 1 / 2 to 2 / 3 of the commonly used anti-corrosion pipe thickness, and the assembly gap between the non-metallic wear-resistant liner and the anti-corrosion layer can be reduced to 1 / 2 to 1 / 5 of the conventional gap. The inner wall of the wear-resistant liner is smooth and straight, with a misalignment difference close to zero, reducing material conveying resistance by more than 60%. Without affecting the performance of the anti-corrosion and wear-resistant pipe, the product weight can be reduced by approximately 45%, and production costs can be reduced by approximately 40%. The corrosion-resistant and wear-resistant pipe of this invention can completely replace the old-fashioned composite corrosion-resistant and wear-resistant pipe characterized by its large size, thickness, weight, and height, thereby improving the technical level of acid-resistant and wear-resistant conveying pipelines in my country. At the same time, it can serve as an upgraded replacement product for traditional steel pipes and rubber-layer composite wear-resistant pipes, and has a promising market prospect.

[0044] Application examples:

[0045] A customer requires a 120mm inner diameter fly ash slurry conveying pipe containing hydrochloric acid, with a slurry temperature of 150°C, a pressure of 0.6MPa, and a single pipe length of 4000mm. The design life is 10 years.

[0046] This invention employs a vertical assembly method for full-size visible assembly of wear-resistant pipes to produce composite anti-corrosion and wear-resistant pipes consisting of a steel pipe, an anti-corrosion layer, and a non-metallic wear-resistant liner. The steel pipe is a seamless steel pipe with a diameter of φ159 x 5 mm; the anti-corrosion layer is a PTFE tube with a diameter of φ149 x 2 mm; and the non-metallic wear-resistant liner is a silicon carbide tube with a diameter of φ140 x 10 mm. Each liner unit is 500 mm long, with a tenon of 5 x 3 mm and a tenon head of 4 x 2 mm. The single-sided gap between the non-metallic wear-resistant liner and the anti-corrosion layer is 2.5 mm, with a maximum misalignment of 0.1 mm. The assembled anti-corrosion and wear-resistant pipe weighs approximately 34 kg per meter. The effective wear-resistant layer thickness is 10 mm, and the maintenance-free service life is greater than 15 years.

[0047] Composite corrosion-resistant and wear-resistant pipes assembled using traditional horizontal assembly processes can only use seamless steel pipes with a diameter of φ200 x 6 mm. The anti-corrosion layer is made of PTFE tubing with a diameter of φ188 x 3.5 mm, and the wear-resistant liner is made of silicon carbide tubing with a diameter of φ165 x 22.5 mm. The single-sided assembly gap between the wear-resistant liner and the anti-corrosion layer is 11.5 mm, and the joint misalignment is 3-10 mm. Each meter of corrosion-resistant and wear-resistant pipe weighs approximately 68 kg. The effective wear-resistant layer thickness is 12.5 mm, and the maintenance-free service life is greater than 15 years.

[0048] Through the comparison of the above application examples, it can be seen that the composite wear-resistant pipe of the present invention has a single weight reduced by about 50%, an outer diameter reduced by about 20%, an anti-corrosion layer thinned by about 43%, an assembly gap thinned by about 67%, and a misalignment difference almost zero, with very obvious advantages.

Claims

1. A vertical assembly method for an ultra-thin corrosion-resistant and wear-resistant composite pipe, characterized in that, The ultra-thin anti-corrosion and wear-resistant composite pipe includes a steel pipe (4) with flanges at both ends, an anti-corrosion layer (2) tightly attached to the inner wall of the steel pipe, a non-metallic wear-resistant liner (1) set in the anti-corrosion layer, and a filling mortar layer (31) filling the assembly gap (3) between the non-metallic wear-resistant liner and the anti-corrosion layer; the anti-corrosion layer is flanged to the sealing end face of the flange; the non-metallic wear-resistant liner is composed of a set of cylindrical liner units stacked together, and each liner unit is provided with a tenon (1a) and a tenon (1b) that can be connected to each other at the upper and lower ends; the wall thickness of the non-metallic wear-resistant liner (1) is no more than 5 mm + the outer diameter of the steel pipe × 3%, the thickness of the anti-corrosion layer (2) is no more than 3 mm, the assembly gap (3) is no more than 5 mm, and the misalignment (1c) difference between adjacent liner units is no more than 1 mm. The steps of the vertical assembly method are as follows: S1. Set an assembly base plate (5), set a pull rod connector (51) on the assembly base plate, connect a central pull rod (6) to the pull rod connector, and set a liner locator (11) with the same center as the pull rod connector (51) around the pull rod connector; set a guide limiting device (9) with the same center as the liner locator around the liner locator. S2. Assemble the non-metallic wear-resistant liner (1): Place the first liner unit on the assembly base plate (5) and fit it over the liner locator (11). Then stack the subsequent liner units one by one, and put the tenon (1b) on the bottom surface of the upper liner unit into the tenon (1a) on the top surface of the lower liner unit until it is stacked to the designed height and assembled into a vertically upward non-metallic wear-resistant liner (1). S3. Connect the central tie rod (6) to the tie rod connector (51), pass the pressure plate (7) with the central hole through the central tie rod and press it on the top of the non-metallic wear-resistant liner (1), install the clamping device (12) on the central tie rod, clamp the pressure plate, and then clamp the non-metallic wear-resistant liner. S4. Lift up the steel pipe (4) with the pre-lined anti-corrosion layer (2), and under the guidance of the guide limiting device (9), put the steel pipe vertically downwards outside the non-metallic wear-resistant liner (1) and keep it coaxial with the non-metallic wear-resistant liner; S5. Fill the assembly gap (3) between the non-metallic wear-resistant liner (1) and the anti-corrosion layer (2) with sealing slurry. After the sealing slurry solidifies, it forms a filling mortar layer (31), thus completing the assembly of a composite pipe consisting of a steel pipe, an anti-corrosion layer, and a non-metallic liner.

2. The vertical assembly method of the ultra-thin anti-corrosion and wear-resistant composite pipe as described in claim 1, characterized in that, The pull rod connector (51) mentioned in step S1 is a nut that matches the central pull rod, or a bayonet that matches the central pull rod.

3. The vertical assembly method of the ultra-thin anti-corrosion and wear-resistant composite pipe as described in claim 2, characterized in that: The central tie rod (6) has threads at both ends, or one end has threads and the other end has a bayonet.

4. The vertical assembly method of the ultra-thin anti-corrosion and wear-resistant composite pipe as described in claim 1, characterized in that, The liner locator (11) mentioned in step S1 is a cylinder, a ring, or multiple columns distributed on the same circumference.

5. The vertical assembly method of the ultra-thin anti-corrosion and wear-resistant composite pipe as described in claim 1, characterized in that, The clamping device (12) mentioned in step S3 is a nut that is threadedly matched with the center tie rod (6).

6. The vertical assembly method of the ultra-thin anti-corrosion and wear-resistant composite pipe as described in any one of claims 1 to 5, characterized in that, The guide limiting device (9) includes a steel pipe limiter (91) at the bottom and a vertical guide rod inserted on the limiter. The limiter is a ring or multiple columns arranged on the same circumference.

7. The vertical assembly method of the ultra-thin anti-corrosion and wear-resistant composite pipe as described in any one of claims 1 to 5, characterized in that, Before assembling the non-metallic wear-resistant liner (1) in step S2 above, a sealing gasket (8) is laid between the liner locator (11) and the guide limiting device (9).

8. The vertical assembly method of the ultra-thin anti-corrosion and wear-resistant composite pipe as described in any one of claims 1 to 5, characterized in that, In step S5 above, the filling slurry introduction device (10) can be placed on the top surface of the anti-corrosion layer (2), with its inner wall facing the inner wall of the anti-corrosion layer. The sealing slurry is poured into it and injected into the assembly gap (3) to gradually fill the gap.

9. The vertical assembly method of the ultra-thin anti-corrosion and wear-resistant composite pipe as described in any one of claims 1 to 5, characterized in that, In step S2 above, when assembling the non-metallic wear-resistant liner (1), first fill the tenon of the two adjacent liner units with sealant, then connect the two liner units together, press and correct them, squeeze out and remove the excess sealant.

10. The vertical assembly method of the ultra-thin anti-corrosion and wear-resistant composite pipe as described in any one of claims 1 to 5, characterized in that, The assembly base plate (5) is installed on the vibration platform (13). When the sealing slurry is injected into the assembly gap (3), the vibration platform vibrates to compact the injected sealing slurry.

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