Stainless steel trenchless pipeline repair lining

Abstract

The utility model relates to a stainless steel trenchless pipeline repair lining, which belongs to the technical field of pipeline repair liners and comprises a lining pipe provided with a fixing mechanism. The fixing mechanism comprises a groove formed in the surface of the inner side of the lining pipe, a round hole formed in the surface of the groove, a fixing bolt movably installed in the groove and penetrating through the round hole and a triangular stabilizing frame fixedly installed in the lining pipe, and a sealing mechanism is arranged between the lining pipe and the fixing bolt. According to the stainless steel trenchless pipeline repairing lining, the fixing bolts are arranged on the lining pipe, the threaded grooves matched with the fixing bolts are formed in the pipeline needing to be repaired in the using process, the lining pipe can be fixed in the pipeline needing to be repaired through the fixing bolts and the threaded grooves when the lining pipe is installed, and using is convenient and fast; the triangular stabilizing frame is arranged on the temporal portion of the lining pipe and can support the interior of the lining pipe, and the interior of the lining pipe can be prevented from collapsing.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline repair linings, and in particular to a stainless steel trenchless pipeline repair lining. Background Art

[0002] Stainless steel trenchless pipe repair lining is a repair technology for old and broken water supply pipes. At the construction site, the prepared lining pipe blanks are delivered to the original pipe section by section using a feeding trolley, and then the round lining pipe is supported by an expansion frame and welded section by section to form a complete stainless steel lining pipe.

[0003] However, the existing stainless steel liner pipe has a small wall thickness, resulting in insufficient ring stiffness of the liner pipe, and there is no stable anchoring between the liner pipe and the old pipeline. Once there is a large local negative pressure and external water pressure, the liner pipe is prone to partial or overall inward collapse, and the pipeline function is seriously affected. Utility Model Content

[0004] In response to the shortcomings of the prior art, the present application provides a stainless steel trenchless pipe repair lining having the advantages of good stability and high strength. It solves the problem that the existing stainless steel liner pipe has a small wall thickness, resulting in insufficient ring stiffness of the liner pipe, and there is no stable anchoring between the liner pipe and the old pipe. Once there is a large local negative pressure and external water pressure, the liner pipe is prone to partial or overall inward collapse, and the pipeline function is seriously affected.

[0005] In summary, the present application provides the following technical solutions: a stainless steel trenchless pipeline repair liner, comprising a liner pipe, on which a fixing mechanism is provided;

[0006] The fixing mechanism includes a groove opened on the inner surface of the liner tube, a circular hole opened on the surface of the groove, a fixing bolt movably installed in the groove and passing through the circular hole, and a triangular stabilizing frame fixedly installed inside the liner tube.

[0007] Furthermore, the size of the nut of the fixing bolt is smaller than the inner size of the groove.

[0008] The beneficial effect of adopting the above further solution is that it is easy for the fixing bolt to rotate in the groove.

[0009] Furthermore, the inner diameter of the circular hole is larger than the diameter of the screw rod of the fixing bolt, and the nut diameter of the fixing bolt is larger than the inner diameter of the circular hole.

[0010] The beneficial effect of adopting the above further solution is that it helps to prevent the fixing bolt from falling out of the circular hole.

[0011] Furthermore, a first rubber sealing gasket is fixedly installed on the inner surface of the groove, and a second rubber sealing gasket is fixedly installed on the lower surface of the nut of the fixing bolt.

[0012] The beneficial effect of adopting the above further solution is that the connection between the fixing bolt and the circular hole can be sealed by the first rubber sealing gasket and the second rubber sealing gasket.

[0013] Furthermore, a rubber sealing cap is clamped inside the groove, and the top surface of the rubber sealing cap is in an arc shape.

[0014] The beneficial effect of adopting the above further scheme is that the inside of the groove can be sealed by the rubber sealing cap, which is helpful to prevent liquid from entering the inside of the groove. At the same time, designing the top of the rubber sealing cap to be an arc shape can reduce the resistance of the rubber sealing cap to the liquid inside the inner liner tube.

[0015] Furthermore, a third rubber sealing gasket is fixedly installed on the outer surface of the inner liner pipe, the circular hole is located on the inner side of the third rubber sealing gasket, and the fixing bolt passes through the third rubber sealing gasket.

[0016] The beneficial effect of adopting the above further solution is that by providing a third rubber sealing gasket on the outer surface of the inner liner pipe, the connection between the fixing bolt and the outer surface of the inner liner pipe can be sealed.

[0017] Furthermore, there are multiple fixing bolts, which are evenly distributed on the inner liner pipe, and the number of the grooves and the circular holes matches the number of the fixing bolts.

[0018] The beneficial effect of adopting the above further solution is that by providing multiple fixing bolts, it is convenient to increase the connection fixing points between the liner pipe and the repaired pipe, which is beneficial to improving the connection firmness between the liner pipe and the repaired pipe.

[0019] Furthermore, there are multiple triangular stabilizing frames, and the multiple triangular stabilizing frames are evenly distributed on the inner side of the liner tube.

[0020] The beneficial effect of adopting the above further solution is that the inner side of the liner pipe can be supported by multiple triangular stabilizing frames, which is helpful to prevent the inner side of the liner pipe from collapsing.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] The stainless steel trenchless pipeline repair lining is provided with fixing bolts on the lining pipe. When in use, a threaded groove matched with the fixing bolts is opened inside the pipeline to be repaired. When installing the lining pipe, the lining pipe can be fixed to the inside of the pipeline to be repaired by using the fixing bolts and the threaded groove. The use is convenient and quick. A triangular stabilizing frame is provided at the temporal part of the lining pipe to support the inside of the lining pipe and prevent the inside of the lining pipe from collapsing. At the same time, the first rubber sealing gasket, the second rubber sealing gasket, the rubber sealing cap and the third rubber sealing gasket can be used to seal the connection between the fixing bolt and the lining pipe, thereby solving the problem that the existing stainless steel lining pipe has a small wall thickness, resulting in insufficient ring stiffness of the lining pipe, and there is no stable anchoring between the lining pipe and the old pipe. Once a large local negative pressure and external water pressure appear, the lining pipe is prone to local or overall inward collapse, and the pipeline function is therefore seriously affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the appearance of the liner pipe of the utility model.

[0024] Figure 2 It is a cross-sectional schematic diagram of the inner liner pipe of the utility model.

[0025] Figure 3 This utility model Figure 2 Enlarged schematic diagram at point A in the middle.

[0026] Description of reference numerals:

[0027] 1. Inner liner; 2. Groove; 3. Round hole; 4. Fixing bolt; 5. Triangular stabilizing frame; 6. First rubber sealing gasket; 7. Second rubber sealing gasket; 8. Rubber sealing cap; 9. Third rubber sealing gasket. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] See also Figure 1-3 A stainless steel trenchless pipe repair lining in this embodiment includes a lining pipe 1, on which a fixing mechanism is provided, the fixing mechanism including a groove 2 opened on the inner surface of the lining pipe 1, a circular hole 3 opened on the surface of the groove 2, a fixing bolt 4 movably installed in the groove 2 and passing through the circular hole 3, and a triangular stabilizing frame 5 fixedly installed inside the lining pipe 1.

[0030] The size of the nut of the fixing bolt 4 is smaller than the internal size of the groove 2, which is convenient for the fixing bolt 4 to rotate in the groove 2. The inner diameter of the circular hole 3 is larger than the screw diameter of the fixing bolt 4. The diameter of the nut of the fixing bolt 4 is larger than the inner diameter of the circular hole 3, which is conducive to preventing the fixing bolt 4 from escaping from the circular hole 3. A first rubber sealing gasket 6 is fixedly installed on the inner surface of the groove 2, and a second rubber sealing gasket 7 is fixedly installed on the lower surface of the nut of the fixing bolt 4. The connection between the fixing bolt 4 and the circular hole 3 can be sealed by the first rubber sealing gasket 6 and the second rubber sealing gasket 7. A rubber sealing cap is clamped inside the groove 2 8. The top surface shape of the rubber sealing cap 8 is an arc shape, and the inside of the groove 2 can be sealed by the rubber sealing cap 8, which is beneficial to prevent liquid from entering the inside of the groove 2. At the same time, the top of the rubber sealing cap 8 is designed to be an arc shape to reduce the resistance of the rubber sealing cap 8 to the liquid inside the inner liner tube 1. A third rubber sealing gasket 9 is fixedly installed on the outer surface of the inner liner tube 1, and the circular hole 3 is located on the inner side of the third rubber sealing gasket 9. The fixing bolt 4 passes through the third rubber sealing gasket 9. By providing the third rubber sealing gasket 9 on the outer surface of the inner liner tube 1, the connection between the fixing bolt 4 and the outer surface of the inner liner tube 1 can be sealed.

[0031] There are multiple fixing bolts 4, which are evenly distributed on the inner liner pipe 1. The number of grooves 2 and circular holes 3 matches the number of fixing bolts 4. By setting multiple fixing bolts 4, it is convenient to increase the connection and fixing points between the inner liner pipe 1 and the repaired pipe, which is beneficial to improve the connection firmness between the inner liner pipe 1 and the repaired pipe. There are multiple triangular stabilizers 5, which are evenly distributed on the inner side of the inner liner pipe 1. The inner side of the inner liner pipe 1 can be supported by multiple triangular stabilizers 5, which is beneficial to prevent the inner side of the inner liner pipe 1 from collapsing.

[0032] See also Figure 2 The external shape of the triangular stabilizer frame 5 in this embodiment is a triangle, and the triangular triangular stabilizer frame 5 can improve the stability inside the liner tube 1.

[0033] It should be noted that the first rubber sealing gasket 6, the second rubber sealing gasket 7 and the rubber sealing cap 8 in the present embodiment are all made of silicone rubber material, and silicone rubber has excellent high temperature resistance, low temperature resistance, oxidation resistance and UV resistance.

[0034] It should be noted that the third rubber sealing gasket 9 in the present embodiment is made of nitrile rubber material, which has good wear resistance and is convenient for absorbing the vibration generated when the inner liner pipe 1 is used.

[0035] The working principle of the above embodiment is:

[0036] When in use, first open a threaded groove compatible with the fixing bolt 4 on the surface at the required position inside the pipeline, then send the inner liner pipe 1 into the pipeline to be repaired, and screw the fixing bolt 4 into the threaded groove to complete the fixation of the inner liner pipe 1. At this time, the third rubber sealing gasket 9 is located between the outer surface of the inner liner pipe 1 and the inner surface of the repaired pipeline. The third rubber sealing gasket 9 is in close contact with the outer surface of the inner liner pipe 1 and the inner surface of the repaired pipeline. When the fixing bolt 4 is tightened, the first rubber sealing gasket 6 and the second rubber sealing gasket 7 are in close contact with each other, and then the rubber sealing cap can be inserted into the groove 2.

Claims

1. A stainless steel trenchless pipeline repair lining, comprising a lining pipe (1), characterized in that: The inner lining tube (1) is provided with a fixing mechanism; The fixing mechanism comprises a groove (2) formed on the inner surface of the inner lining tube (1), a circular hole (3) formed on the surface of the groove (2), a fixing bolt (4) movably mounted in the groove (2) and passing through the circular hole (3), and a triangular stabilizing frame (5) fixedly mounted inside the inner lining tube (1).

2. A stainless steel trenchless pipeline repair lining according to claim 1, characterized in that: The size of the nut of the fixing bolt (4) is smaller than the inner size of the groove (2).

3. The stainless steel trenchless pipeline repair lining according to claim 1 is characterized by: The inner diameter of the circular hole (3) is larger than the diameter of the screw rod of the fixing bolt (4), and the nut diameter of the fixing bolt (4) is larger than the inner diameter of the circular hole (3).

4. The stainless steel trenchless pipeline repair lining according to claim 1 is characterized by: A first rubber sealing gasket (6) is fixedly mounted on the inner surface of the groove (2), and a second rubber sealing gasket (7) is fixedly mounted on the lower surface of the nut of the fixing bolt (4).

5. The stainless steel trenchless pipeline repair lining according to claim 1 is characterized by: A rubber sealing cap (8) is clamped inside the groove (2), and the top surface of the rubber sealing cap (8) is in the shape of an arc.

6. The stainless steel trenchless pipeline repair lining according to claim 1, characterized in that: A third rubber sealing gasket (9) is fixedly mounted on the outer surface of the inner liner tube (1); the circular hole (3) is located inside the third rubber sealing gasket (9); and the fixing bolt (4) passes through the third rubber sealing gasket (9).

7. The stainless steel trenchless pipeline repair lining according to claim 1 is characterized by: The number of the fixing bolts (4) is multiple, and the multiple fixing bolts (4) are evenly distributed on the inner liner pipe (1), and the number of the grooves (2) and the circular holes (3) is compatible with the number of the fixing bolts (4).

8. The stainless steel trenchless pipeline repair lining according to claim 1, characterized in that: The number of the triangular stabilizing frames (5) is multiple, and the multiple triangular stabilizing frames (5) are evenly distributed on the inner side of the liner tube (1).

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