Steel lining polyurethane pipeline

Abstract

The utility model relates to the technical field of pipelines, and discloses a steel lining polyurethane pipeline which comprises mutually spliced pipe body units, and each pipe body unit comprises an outer pipe and an inner pipe. Mounting blocks are oppositely arranged on the outer side wall of the inner pipe, long-strip-shaped grooves allowing the mounting blocks to slide in are formed in the outer pipe in the axial direction, mounting grooves are oppositely formed in the outer side walls of the two ends of the outer pipe, and the mounting grooves communicate with the long-strip-shaped grooves. The pipe body units are connected through a connecting assembly, the connecting assembly comprises an inserting half ring and a clamping half ring, the inner side wall of the inserting half ring is provided with an abutting block capable of extending into the corresponding mounting groove, the inserting half ring is oppositely provided with an inserting block, the clamping half ring is oppositely provided with a mounting cavity with an opening in the upper end, and a clamping piece is arranged in the mounting cavity. Through the arrangement of the clamping pieces and the inserting blocks, the clamping pieces can clamp and fix the inserting blocks, so that the inserting semi-rings and the clamping semi-rings can be spliced into a complete connecting ring, the two outer pipes can be fixed to the connecting ring, and the two pipe body units can be connected.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, and more specifically, to a steel-lined polyurethane pipeline. Background Technology

[0002] Polyurethane-lined steel pipes are high-wear-resistant and high-pressure-resistant conveying pipes made by lining the inner wall of a steel pipe with a uniform and smooth layer of polyurethane wear-resistant material.

[0003] When connecting two common pipes, flanges are usually used. The flanges are welded to both ends of the pipes, and the flanges at the ends of the two pipes are aligned. The two flanges are then connected with expansion bolts to achieve the connection between the two pipes. However, in actual use, the connection of the two flanges requires aligning them first and then tightening multiple expansion bolts, which makes the operation cumbersome and needs improvement. Utility Model Content

[0004] The purpose of this utility model is to provide a steel-lined polyurethane pipe to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A steel-lined polyurethane pipe includes interconnected pipe units, each comprising an outer pipe and an inner pipe. The outer wall of the inner pipe has opposing mounting blocks, and the inner wall of the outer pipe has an axially spaced elongated groove for the mounting blocks to slide into. The outer walls at both ends of the outer pipe have opposing mounting slots that connect to the elongated groove. The pipe units are connected by a connecting assembly, which includes a plug-in half-ring and a snap-fit ​​half-ring. The inner wall of the plug-in half-ring has an abutment block that can extend into the corresponding mounting slot. The plug-in half-ring has opposing plug-in blocks, and the snap-fit ​​half-ring has opposing mounting cavities with open upper ends. The mounting cavities contain snap-fit ​​elements for fixing the plug-in blocks.

[0007] Furthermore, a rotating groove is provided on the bottom wall of the mounting cavity; the snap-fit ​​component includes an arc-shaped block that is rotatable and disposed opposite to each other in the rotating groove. The arc-shaped block is arc-shaped, with a protrusion at one end of the arc-shaped block located in the rotating groove, and a notch for the protrusion to be inserted at one end of the other arc-shaped block located in the rotating groove. A hinge rod that passes through the notch is provided in the rotating groove; the snap-fit ​​component also includes a driving component disposed opposite to each other in the mounting cavity. The driving component is used to drive the arc-shaped block to rotate and snap-fit ​​the plug-in block.

[0008] Furthermore, the driving component includes a mounting plate disposed on the outer side wall of the arc-shaped block, a first mounting post disposed on the lower side of the mounting plate, and a second mounting post disposed on the bottom wall of the mounting cavity, which is aligned with the first mounting post. The driving component also includes a spring for pushing the corresponding arc-shaped block to rotate, with the two ends of the spring respectively sleeved on the first mounting post and the second mounting post. A limiting component for limiting the arc-shaped block is also disposed inside the mounting cavity.

[0009] Furthermore, the mounting cavity has corresponding limiting grooves on opposite sidewalls, which are arranged along the rotation direction of the arc-shaped block; the limiting member includes a slidable limiting rod disposed in the corresponding limiting groove, which passes through the corresponding arc-shaped block.

[0010] Furthermore, the plug-in block is circular, and a first arc surface is provided on the outer side wall of the plug-in block along its circumference, and a second arc surface that matches the first arc surface is provided at the upper end of the arc block.

[0011] Furthermore, the inner wall of the snap-fit ​​half-ring is provided with a through hole that connects to the mounting cavity and penetrates the limiting groove.

[0012] Furthermore, the outer wall of the snap-fit ​​half-ring is provided with a mounting hole that connects to the mounting cavity and penetrates the rotating groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of snap-fit ​​component and plug-in block, enables the snap-fit ​​component to snap-fit ​​and fix the plug-in block, thereby enabling the plug-in half ring to be spliced ​​with the snap-fit ​​half ring to form a complete connecting ring, so that the two outer tubes can be fixed on the connecting ring, thus enabling the two tube body units to be connected.

[0015] 2. This utility model, through the setting of the nano layer, can effectively prevent the adhesion of scale, thus better preventing scale buildup in the inner tube; through the setting of the polyurethane layer, the polyurethane layer can better maintain the temperature of the medium fluid, thereby giving the inner tube better heat insulation; the protective layer is made of fiberglass, and through the setting of the protective layer, the strength of the inner tube can be better improved. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a steel-lined polyurethane pipe according to the present invention.

[0017] Figure 2 This is a schematic diagram of the inner tube in this utility model.

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the inner tube inside the outer tube in this utility model.

[0019] Figure 4This is a schematic diagram of the connecting ring formed by the insert half-ring and the snap-fit ​​half-ring in this utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the plug-in half-ring in this utility model.

[0021] Figure 6 This is a cross-sectional structural diagram of the plug-in block and snap-fit ​​assembly in this utility model.

[0022] Figure 7 This is a schematic diagram of the snap-fit ​​assembly in this utility model.

[0023] Figure 8 This is a schematic diagram of the layered structure of the inner tube in this utility model.

[0024] The meanings of the labels in the diagram are as follows: 100, outer tube; 101, mounting groove; 102, plug-in half ring; 103, snap-fit ​​half ring; 104, through hole; 105, inner tube;

[0025] 200. Installation block;

[0026] 300, slot; 301, long slot;

[0027] 400. Abutment block; 401. Insert block; 402. Mounting hole; 403. Connecting ring;

[0028] 500, Connector block; 501, First arc surface;

[0029] 600. Mounting cavity; 601. Arc-shaped block; 602. Limiting groove; 603. Mounting plate; 604. Spring; 605. Hinge rod; 606. Rotation groove;

[0030] 700. First mounting post; 701. Second mounting post; 703. Notch; 704. Protrusion; 705. Limiting rod; 706. Second arc surface;

[0031] 800, Nano layer; 801, Polyurethane layer; 802, Protective layer. Detailed Implementation

[0032] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0033] The following is in conjunction with the appendix Figures 1-8 This embodiment will be described in further detail.

[0034] Combination Figures 1-8As shown, a steel-lined polyurethane pipe in this embodiment includes interconnected pipe units, each pipe unit including an outer pipe 100 and an inner pipe 105; mounting blocks 200 are provided opposite each other on the outer side wall of the inner pipe 105, and an elongated groove 301 is provided along its axial direction inside the outer pipe 100 for the mounting blocks 200 to slide into. Mounting grooves 101 are provided opposite each other on the outer side walls at both ends of the outer pipe 100, and the mounting grooves 101 are connected to the elongated grooves 301; the pipe units are connected by connecting components, which include a plug-in half-ring 102 and a snap-fit ​​half-ring 103. An abutment block 400 that can extend into the corresponding mounting groove 101 is provided on the inner side wall of the plug-in half-ring 102, a plug-in block 500 is provided opposite each other on the plug-in half-ring 102, and a mounting cavity 600 with an upper opening is provided opposite each other on the snap-fit ​​half-ring 103. A snap-fit ​​member for fixing the plug-in block 500 is provided in the mounting cavity 600.

[0035] In practical use, this embodiment is combined with Figure 8 As shown, the inner tube 105 is composed of a nano-layer 800, a polyurethane layer 801, and a protective layer 802 from the inside out. The nano-layer 800 effectively prevents scale adhesion, thus better preventing scale buildup in the inner tube 105. The polyurethane layer 801 effectively maintains the temperature of the medium fluid, thereby giving the inner tube 105 better insulation properties. The protective layer 802 is made of fiberglass, which effectively improves the strength of the inner tube 105.

[0036] In actual use, slots 300 are provided at both ends of the outer wall of the outer tube 100, and the slots 300 are aligned with the mounting groove 101. The inner wall of the snap-fit ​​half ring 103 is provided with a corresponding insertion block 401 opposite to the slot 300. The long groove 301 is open at both ends, and the mounting block 200 is fixedly installed on the outer wall of the inner tube 105.

[0037] When the inner tube 105 needs to be installed inside the outer tube 100, the mounting block 200 is aligned with the opening of the elongated groove 301, allowing the mounting block 200 to slide into the elongated groove 301. When the end of the inner tube 105 is flush with the end of the outer tube 100, the mounting block 200 is located in the elongated groove on one side of the mounting groove 101, thus enabling the inner tube 105 to be slidably installed inside the outer tube 100. Next, the two tube units to be connected are brought together, and the insert block 401 on the snap-fit ​​half-ring 103 is aligned with the slots 300 on the two outer tubes 100 and inserted into the corresponding slots 300. At this time, the two outer tubes 100 can be installed on the snap-fit ​​half-ring 103. Then, the abutment block on the insert half-ring 102 is... 400 aligns with the mounting slots 101 on the two outer tubes 100 and inserts into the corresponding mounting slots 101, so that the side wall of the mounting block 200 can abut against the corresponding side wall of the abutment block 400, thereby preventing the inner tube 105 from moving within the outer tube 100, thus ensuring that the inner tube 105 can be fixedly installed within the outer tube 100; at the same time, the plug-in block 500 can be inserted into the mounting cavity 600. Through the setting of the snap-fit ​​member and the plug-in block 500, the snap-fit ​​member can snap-fit ​​and fix the plug-in block 500, thereby allowing the plug-in half ring 102 to be spliced ​​with the snap-fit ​​half ring 103 to form a complete connecting ring 403, so that the two outer tubes 100 can be fixed on the connecting ring 403, thus ensuring that the two tube units can be connected;

[0038] The mounting groove 101 is adapted to the abutment block 400, so that the side wall of the abutment block 400 can slide against the corresponding side wall of the mounting groove 101, thereby preventing the abutment block 400 from shaking in the mounting groove 101 and allowing the mounting block 200 to better abut against the corresponding side wall of the abutment block 400, thus better preventing the inner tube 105 from moving in the outer tube 100; at the same time, it prevents the insertion half ring 102 from moving on the snap-fit ​​half ring 103, so that the connecting ring 403 can better connect the two outer tubes 100.

[0039] The mounting block 200 is adapted to the elongated groove 301, so that the side wall of the mounting block 200 can slide against the corresponding side wall of the elongated groove 301, thereby preventing the mounting block 200 from shaking in the elongated groove 301, and thus preventing the inner tube 105 from rotating in the outer tube 100.

[0040] The slot 300 is adapted to the plug 401, so that the side wall of the plug 401 can slide against the corresponding side wall of the slot 300, thereby preventing the plug 401 from shaking in the slot 300, and thus allowing the two outer tubes 100 to be better connected on the connecting ring 403.

[0041] Combination Figures 6-7As shown, in this embodiment, a rotating groove 606 is provided on the bottom wall of the mounting cavity 600; the snap-fit ​​component includes an arc-shaped block 601 that is rotatable and disposed opposite to each other in the rotating groove 606. The arc-shaped block 601 is arc-shaped, and a protrusion 704 is provided at one end of the arc-shaped block 601 located in the rotating groove 606. A notch 703 for inserting the protrusion 704 is provided at one end of the other arc-shaped block 601 located in the rotating groove 606. A hinge rod 605 that passes through the notch 703 is provided in the rotating groove 606; the snap-fit ​​component also includes a driving component disposed opposite to each other in the mounting cavity 600. The driving component is used to drive the arc-shaped block 601 to rotate and snap-fit ​​and fix the plug-in block 500.

[0042] In actual use, the plug-in block 500 is inserted into the corresponding mounting cavity 600. Through the setting of the driving component, the driving component can drive the two arc-shaped blocks 601 to rotate around the hinge rod 605, so that the two arc-shaped blocks 601 can move away from each other, and the plug-in block 500 can be inserted between the two arc-shaped blocks 601. When the plug-in block 500 abuts against the bottom wall of the two arc-shaped blocks 601, the driving component can drive the two arc-shaped blocks 601 to reset around the hinge rod 605 and hold the plug-in block 500, so that the snap-fit ​​assembly can fix the plug-in block 500, so that the plug-in half ring 102 can be spliced ​​with the snap-fit ​​half ring 103 to form a complete connecting ring 403, so that the two outer tubes 100 can be connected.

[0043] In actual use, the plug-in block 500 is adapted to the two arc-shaped blocks 601, so that the side wall of the plug-in block 500 can slide and fit against the corresponding side wall of the two arc-shaped blocks 601, thereby allowing the two arc-shaped blocks 601 to better hold the plug-in block 500, thus allowing the plug-in block 500 to be better fixed.

[0044] The notch 703, the protrusion 704, and the hinge rod 605 are designed to allow the hinge rod 605 to pass through the notch 703 and the protrusion 704, thereby enabling the two arc-shaped blocks 601 to be rotatably mounted on the hinge rod 605. Specifically, the outer wall of the snap-fit ​​half-ring 103 is provided with a mounting hole 402 that connects to the mounting cavity 600 and passes through the rotating groove 606. The mounting hole 402 allows the hinge rod 605 to be fixedly mounted within the rotating groove 606.

[0045] Combination Figures 6-7As shown, in this embodiment, the driving component includes a mounting plate 603 disposed on the outer side wall of the arc-shaped block 601. A first mounting post 700 is disposed on the lower side of the mounting plate 603. A second mounting post 701, aligned with the first mounting post 700, is disposed on the bottom wall of the mounting cavity 600. The driving component also includes a spring 604 for pushing the corresponding arc-shaped block 601 to rotate. The two ends of the spring 604 are respectively sleeved on the first mounting post 700 and the second mounting post 701. A limiting component for limiting the arc-shaped block 601 is also provided in the mounting cavity 600.

[0046] In actual use, the plug-in block 500 is circular, and a first arc surface 501 is provided on the outer side wall of the plug-in block 500 along its circumference. A second arc surface 706 adapted to the first arc surface 501 is provided at the upper end of the arc block 601.

[0047] In actual use, the limiting component can limit the two arc-shaped blocks 601, so that there is a gap at the upper end of the two arc-shaped blocks 601 for the insertion block 500 to be inserted. This can prevent the upper ends of the two arc-shaped blocks 601 from abutting each other under the push of the spring 604, which would prevent the insertion block 500 from being inserted between the two arc-shaped blocks 601 and fixed.

[0048] In actual use, the plug-in block 500 is inserted through the gap between the arc-shaped blocks 601, so that the first arc surface 501 can fit against the second arc surface 706. At this time, the plug-in block 500 is inserted further, so that the first arc surface 501 can slide and squeeze the second arc surface 706, so that the second arc surface 706 can drive the corresponding arc-shaped block 601 away, so that the two arc-shaped blocks 601 can drive the corresponding mounting plate 603 to compress the spring 604. When the first arc surface 501 slides away from the second arc surface 706, at this time, the second arc surface 706 stops driving the corresponding arc-shaped block 601 away from each other, so that under the action of the spring 604, the spring 604 can push the corresponding mounting plate 603 upward, so that the two mounting plates 603 can drive the corresponding arc-shaped blocks 601 to move closer to each other, so that the two arc-shaped blocks 601 can hug the side wall of the plug-in block 500, thereby locking and fixing the plug-in block 500.

[0049] Among them, the spring 604 is made of alloy spring steel, which gives the spring 604 high strength, so that the two arc blocks 601 can tightly hold the plug block 500, making it difficult for the plug block 500 to detach from the two arc blocks 601.

[0050] The spring 604 can be installed in the mounting cavity 600 by setting the first mounting post 700 and the second mounting post 701.

[0051] Combination Figure 6As shown, in this embodiment, the mounting cavity 600 has a limiting groove 602 on the opposite side wall, and the limiting groove 602 is arranged along the rotation direction of the arc block 601; the limiting member includes a limiting rod 705 that is disposed in the opposite limiting groove 602 and is slidable, and the limiting rod 705 passes through the corresponding arc block 601.

[0052] In actual use, in the initial state, the spring 604 pushes the mounting plate 603 to rotate the corresponding arc block 601. Since the limiting groove 602 is set along the rotation direction of the arc block 601, the limiting rod 705 can slide in the limiting groove 602. When the limiting rod 705 slides and abuts against one end of the limiting groove 602, the spring 604 cannot push the mounting plate 603 to rotate the corresponding arc block 601, thereby limiting the arc block 601 and allowing a gap to exist between the upper ends of the two arc blocks 601.

[0053] In actual use, the inner side wall of the snap-fit ​​half ring 103 is provided with a through hole 104 that connects to the mounting cavity 600 and passes through the limiting groove 602. Through the setting of the through hole 104, the limiting rod 705 can be installed in the mounting cavity 600.

[0054] In this embodiment, the two ends of the plug-in half ring 102 are provided with plug holes, and the two ends of the snap-fit ​​half ring 103 are provided with plug rods corresponding to the plug holes.

[0055] In actual use, when the plug block 500 is inserted into the mounting cavity 600 and fixed by the snap-fit, the plug rod can be inserted into the socket at the same time, so that the two tube units can be pre-fixed. At this time, the plug rod is fixed in the socket by the screw, thereby improving the connection strength between the two tube units.

[0056] In practical use, this invention involves aligning the mounting block 200 on the inner tube 105 with the opening of the elongated groove 301 and sliding the mounting block 200 into the elongated groove 301, allowing the inner tube 105 to slide into the outer tube 100. When the end of the inner tube 105 is flush with the end of the outer tube 100, the mounting block 200 is located in the elongated groove 301 on one side of the mounting groove 101. At this point, the ends of the two tube units to be connected are brought together, and the insertion block 401 on the snap-fit ​​half-ring 103 is aligned with the slots 300 on the two outer tubes 100 and inserted into the corresponding slots 300. At this point, the two outer tubes 100 can be installed on the snap-fit ​​half-ring 103. Then, the abutment block 401 on the insertion half-ring 102 is... Align the mounting slots 101 on the two outer tubes 100 and insert them into the corresponding mounting slots 101, so that the side wall of the mounting block 200 can abut against the corresponding side wall of the abutment block 400, thereby preventing the inner tube 105 from moving within the outer tube 100, thus ensuring that the inner tube 105 can be fixedly installed within the outer tube 100; at the same time, the plug-in block 500 can be inserted into the mounting cavity 600. Through the setting of the snap-fit ​​member and the plug-in block 500, the snap-fit ​​member can snap-fit ​​and fix the plug-in block 500, thereby allowing the plug-in half ring 102 to be spliced ​​with the snap-fit ​​half ring 103 to form a complete connecting ring 403, so that the two outer tubes 100 can be fixed on the connecting ring 403, thus ensuring that the two tube units can be connected.

[0057] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A steel lined polyurethane pipe comprising pipe body units spliced to each other, the pipe body units comprising an outer pipe (100) and an inner pipe (105); characterized in that: The outer side wall of the inner tube (105) is oppositely provided with a mounting block (200), the outer tube (100) is axially provided with a long slot (301) for sliding the mounting block (200) into along the axial direction, the outer side wall of the two ends of the outer tube (100) is oppositely provided with a mounting slot (101), the mounting slot (101) is communicated with the long slot (301); the pipe body unit is connected through a connecting assembly, the connecting assembly comprises a plug-in half ring (102) and a clamping half ring (103), the inner side wall of the plug-in half ring (102) is provided with an abutting block (400) which can extend into the corresponding mounting slot (101), the plug-in half ring (102) is oppositely provided with a plug-in block (500), the clamping half ring (103) is oppositely provided with an installation cavity (600) which is open at the upper end, and the installation cavity (600) is provided with a clamping piece for fixing the plug-in block (500).

2. A steel lined polyurethane pipe according to claim 1, characterized in that: A rotating slot (606) is formed in the bottom wall of the installation cavity (600); the clamping piece comprises an arc-shaped block (601) which is oppositely arranged in the rotating slot (606) and can rotate, the arc-shaped block (601) is arc-shaped, one end of the arc-shaped block (601) located in the rotating slot (606) is provided with a protrusion (704), the other end of the arc-shaped block (601) located in the rotating slot (606) is provided with an opening (703) for inserting the protrusion (704), and a hinge rod (605) is arranged in the rotating slot (606) and penetrates the opening (703); the clamping piece further comprises a driving piece oppositely arranged in the installation cavity (600), and the driving piece is used for driving the arc-shaped block (601) to rotate and clamping and fixing the plug-in block (500).

3. A steel lined polyurethane pipe according to claim 2, characterised in that: The driving piece comprises a mounting plate (603) arranged on the outer side wall of the arc-shaped block (601), a first mounting column (700) is arranged on the lower side of the mounting plate (603), a second mounting column (701) is arranged on the bottom wall of the installation cavity (600) and is opposite to the first mounting column (700), the driving piece further comprises a spring (604) for pushing the corresponding arc-shaped block (601) to rotate, and the two ends of the spring (604) are respectively sleeved on the first mounting column (700) and the second mounting column (701); the installation cavity (600) is further provided with a limiting piece for limiting the arc-shaped block (601).

4. A steel lined polyurethane pipe according to claim 3, characterised in that: Limiting grooves (602) are oppositely arranged on the side walls of the installation cavity (600), and the limiting grooves (602) are arranged along the rotating direction of the arc-shaped block (601); the limiting piece comprises a limiting rod (705) which is oppositely arranged in the limiting grooves (602) and can slide, and the limiting rod (705) penetrates the corresponding arc-shaped block (601).

5. A steel lined polyurethane pipe according to claim 2, characterized in that: The plug-in block (500) is circular, a first arc surface (501) is arranged on the outer side wall of the plug-in block (500) along the circumferential direction, and a second arc surface (706) which is matched with the first arc surface (501) is arranged at the upper end of the arc-shaped block (601).

6. A steel lined polyurethane pipe according to claim 1, characterized in that: A through hole (104) is arranged on the inner side wall of the clamping half ring (103) and penetrates the limiting groove (602) and the installation cavity (600).

7. A steel lined polyurethane pipe according to claim 1, characterized in that: An installation hole (402) is arranged on the outer side wall of the clamping half ring (103) and penetrates the installation cavity (600) and the rotating slot (606).

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