Tunnel double-layer drainage pipeline

Abstract

The utility model relates to the technical field of tunnel drainage, and particularly discloses a tunnel double-layer drainage pipeline which comprises an outer pipe, a soft inner pipe and a crushing mechanism. The soft inner pipe is arranged in the outer pipe, and the soft inner pipe and the outer pipe are of a concentric structure. The crushing mechanism is arranged in the soft inner pipe and is used for driving the soft inner pipe to be compressed / stretched by utilizing water flow impact so as to crush crystals on the pipe wall of the soft inner pipe; the crushing mechanism comprises a fixed rod, a movable rod and a shaft rod; the two ends of the fixed rod are fixedly connected with the outer pipe and the shaft rod respectively, the movable rod is fixedly connected with the soft inner pipe, and the central axis of the shaft rod coincides with the central axis of the soft inner pipe; the shaft rod is rotatably sleeved with an impeller, and the impeller, the movable rod and the fixed rod are arranged in sequence; according to the tunnel double-layer drainage pipeline, crystals in the soft inner pipe can be broken, and smooth circulation of the drainage pipe is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel drainage, in particular to a double-layer drainage pipeline for a tunnel. Background Art

[0002] With the substantial increase in tunnel construction, problems with tunnel drainage systems have become increasingly prominent, such as cracks in the tunnel lining and water leakage in the side walls, which seriously affect the use and safety of the tunnel. Once the drainage system is blocked, the water pressure behind the lining increases, resulting in increased axial thrust and bending moment of the tunnel lining, which seriously threatens the long-term safety of the tunnel.

[0003] Leakage water usually comes from groundwater, rainfall, underground rivers or other water sources. When a tunnel passes through an aquifer or an area with a high groundwater level, groundwater may damage the tunnel lining and corrode the pipes in the concrete, causing adverse effects on the tunnel structure, equipment and safety. In addition, it may also cause problems such as rock collapse, tunnel structure damage and underground engineering diseases. A major cause of leakage water is the blockage of tunnel drainage pipes. As the blockage increases, the water head increases, which will seep out of the surrounding rock and put pressure on the tunnel lining. Tunnel drainage pipe blockage is a common and serious problem in tunnel engineering. As an important part of the tunnel, the drainage system is directly related to the safety of the internal structure of the tunnel.

[0004] The blockage of tunnel drainage system during operation is quite common, which has caused some operation accidents. In karst areas, it is more common for tunnel drainage facilities to be blocked by crystallization after a period of operation, which can also cause tunnel leakage, arch bottom bulge, lining block loss and other diseases, threatening the safety of tunnel lining structure and increasing maintenance costs. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a double-layer drainage pipe for a tunnel, which can break up the crystals in the soft inner pipe and ensure the smooth flow of the drainage pipe.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] Provided is a double-layer tunnel drainage pipe comprising an outer pipe, a soft inner pipe and a crushing mechanism.

[0008] The soft inner tube is arranged inside the outer tube, and the soft inner tube and the outer tube are concentric structures.

[0009] The crushing mechanism is arranged in the soft inner tube, and is used for utilizing water flow impact to drive the soft inner tube to compress / stretch, so as to crush the crystals on the wall of the soft inner tube.

[0010] The crushing mechanism includes a fixed rod, a moving rod and a shaft rod.

[0011] The two ends of the fixed rod are fixedly connected to the outer tube and the shaft rod respectively, the movable rod is configured to be fixedly connected to the soft inner tube, and the central axis of the shaft rod is configured to coincide with the central axis of the soft inner tube.

[0012] The shaft rod is rotatably sleeved with an impeller, and the impeller, the moving rod and the fixed rod are arranged in sequence.

[0013] In the double-layer tunnel drainage pipe provided in at least one embodiment of the present disclosure, a reset mechanism is arranged between the fixed rod and the movable rod, and the reset mechanism is used to drive the movable rod to reset.

[0014] In the double-layer tunnel drainage pipe provided in at least one embodiment of the present disclosure, the reset mechanism is a reset spring.

[0015] One end of the return spring is configured to be fixedly connected to the fixed rod, and the other end of the return spring is configured to be fixedly connected to the moving rod.

[0016] In the double-layer tunnel drainage pipe provided by at least one embodiment of the present disclosure, the shaft rod passes through the return spring, and the central axis of the return spring coincides with the central axis of the shaft rod.

[0017] In the double-layer tunnel drainage pipe provided by at least one embodiment of the present disclosure, the moving rod is rotatably connected to the impeller, and the diameter of the impeller is smaller than the inner diameter of the soft inner tube, so that a gap exists between the impeller and the soft inner tube.

[0018] In the double-layer tunnel drainage pipe provided in at least one embodiment of the present disclosure, the outer pipe is a hard outer pipe.

[0019] The outer tube is one of a PVC tube, a PE tube or a glass fiber reinforced plastic tube.

[0020] In the double-layer tunnel drainage pipe provided in at least one embodiment of the present disclosure, the soft inner pipe has a spiral skeleton inside, and the soft inner pipe as a whole can be compressed and stretched. When the soft inner pipe is compressed, irregular wrinkles will be generated on its wall.

[0021] In the double-layer tunnel drainage pipe provided in at least one embodiment of the present disclosure, the spiral skeleton adopts a spring steel wire spiral skeleton.

[0022] The beneficial effects of the utility model are as follows: the impeller drives the moving rod to move through the impact of water flow, and the moving rod drives the soft inner tube to do stretching / compression movement. The stretching / compression movement of the soft inner tube can cause the crystals of the pipe attached thereto to break, and the water flow can flush out the broken crystals to prevent the inside of the drainage pipe from being blocked by crystallization, thereby ensuring the smooth flow of the tunnel drainage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 The utility model is a schematic diagram of the internal structure of a double-layer drainage pipe in a tunnel.

[0025] Figure 2 It is a cross-sectional view of a double-layer drainage pipe in a tunnel according to the utility model.

[0026] In the figure:

[0027] 1. Outer tube; 2. Soft inner tube; 3. Shaft; 4. Impeller; 5. Fixed rod; 6. Moving rod; 7. Reset mechanism; 8. Washer. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments. Obviously, the described embodiments are only a part of the embodiments, not all of the embodiments. Unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0029] Example

[0030] like Figure 1 and 2 As shown, this embodiment provides a double-layer drainage pipe for a tunnel, comprising an outer pipe 1, a soft inner pipe 2 and a crushing mechanism.

[0031] Specifically, the soft inner tube 2 is disposed in the outer tube 1 , and the soft inner tube 2 and the outer tube 1 are concentric structures, and the outer tube wall of the soft inner tube 2 abuts against the inner tube wall of the outer tube 1 .

[0032] Specifically, the crushing mechanism is disposed in the soft inner tube 2 , and is used to utilize the impact of water flow to drive the soft inner tube 2 to axially compress or stretch, thereby crushing the crystals on the wall of the soft inner tube 2 .

[0033] In this embodiment, the crushing mechanism includes a fixed rod 5 , a movable rod 6 and a shaft rod 3 .

[0034] Specifically, one end of the fixing rod 5 is fixedly connected to the shaft rod 3 , and the other end of the fixing rod 5 passes through the soft inner tube 2 and is fixedly connected to the outer tube 1 .

[0035] Specifically, the moving rod 6 is configured to be fixedly connected to the soft inner tube 2 , and the central axis of the shaft rod 3 is configured to coincide with the central axis of the soft inner tube 2 .

[0036] Specifically, the shaft 3 is rotatably sleeved with an impeller 4, and the impeller 4, the moving rod 6 and the fixed rod 5 are arranged in sequence. The impeller 4 and the moving rod 6 can perform linear reciprocating motion along the shaft 3.

[0037] For example, the impeller 4 has a rotary bearing (not shown), the impeller 4 is fixedly connected to the outer ring of the rotary bearing, the shaft 3 passes through the inner ring of the rotary bearing, and the inner ring of the rotary bearing is fixedly connected to the moving rod 6.

[0038] Furthermore, the impeller 4, the movable rod 6 and the fixed rod 5 are arranged in sequence along the water flow direction, and when impacted by the water flow, the crushing mechanism drives the soft inner tube 2 to move in axial compression;

[0039] Alternatively, the fixed rod 5, the movable rod 6 and the impeller 4 are arranged in sequence along the opposite direction of the water flow, and when impacted by the water flow, the crushing mechanism drives the soft inner tube 2 to stretch and move in the axial direction.

[0040] When in use, the impeller 4 drives the moving rod 6 to move through the impact of water flow, and the moving rod 6 drives the soft inner tube 2 to perform axial stretching / compression movement. The axial stretching / compression movement of the soft inner tube 2 can cause the pipe crystals attached thereto to break, and the water flow can flush out the broken crystals, thereby preventing the inside of the drain pipe from being blocked by crystallization and ensuring the smooth flow of the drain pipe.

[0041] In this embodiment, a reset mechanism 7 is disposed between the fixed rod 5 and the movable rod 6 , and the reset mechanism 7 is used to drive the movable rod 6 to reset.

[0042] Specifically, the reset mechanism 7 is a reset spring.

[0043] Exemplarily, both the fixed rod 5 and the movable rod 6 have washers 8 , and both the fixed rod 5 and the movable rod 6 are fixedly connected to the washers 8 thereon, and both ends of the return spring are fixedly connected to the two washers respectively.

[0044] Specifically, the shaft rod 3 passes through the return spring, and the central axis of the return spring coincides with the central axis of the shaft rod 3 .

[0045] In this embodiment, the moving rod 6 is rotatably connected to the impeller 4 via a rotating bearing, and the diameter of the impeller 4 is smaller than the inner diameter of the soft inner tube 2. Since the impeller 4 moves along the shaft 3 and the diameter of the impeller 4 is smaller than the inner diameter of the soft inner tube 2, there is a gap between the impeller 4 and the soft inner tube 2, and the impeller 4 will not scratch the soft inner tube 2 during operation, thereby preventing the impeller 4 from scratching the soft inner tube 2.

[0046] In this embodiment, the soft inner tube 2 has a spiral skeleton (not shown) inside. The soft inner tube 2 has good flexibility. The soft inner tube 2 has a spiral skeleton as support inside. The soft inner tube as a whole can be compressed and stretched. When the soft inner tube is compressed, irregular wrinkles will be generated on its wall. At the same time, the spiral skeleton can also provide the soft inner tube 2 with reset capability.

[0047] Exemplarily, the spiral skeleton adopts a spring steel wire spiral skeleton.

[0048] In some embodiments, the soft inner tube is a synthetic polyester fiber limiting tube, the synthetic polyester fiber limiting tube is a double-layered arrangement, and the spiral skeleton is located between the two layers of the polyester fiber limiting tube.

[0049] In some embodiments, the soft inner tube is a silicone tube, and the spiral skeleton and the silicone tube are integrally formed.

[0050] In this embodiment, the outer tube 1 is a hard outer tube 1 .

[0051] In some embodiments, the outer tube 1 is a PVC tube.

[0052] In some embodiments, the outer tube 1 is a PE tube.

[0053] In some embodiments, the outer tube 1 is a glass fiber reinforced plastic tube.

[0054] Although the embodiments of the present application have been shown and described above, the scope of protection of the present invention is not limited thereto, and any changes or substitutions that are not conceivable through creative work should be included in the scope of protection of the present invention; unless explicitly stated, any element, action or instruction used in this document should not be interpreted as critical or necessary.

Claims

1. A double-layer drainage pipe in a tunnel, characterized in that: include: External pipe; a soft inner tube, disposed inside the outer tube, wherein the soft inner tube and the outer tube are concentric structures; and A crushing mechanism is disposed in the soft inner tube, and is used to use water flow impact to drive the soft inner tube to compress / stretch, so as to crush the crystals on the wall of the soft inner tube; Wherein, the crushing mechanism comprises a fixed rod, a movable rod and an axle rod; The two ends of the fixed rod are fixedly connected to the outer tube and the shaft rod respectively, the movable rod is configured to be fixedly connected to the soft inner tube, and the central axis of the shaft rod is configured to coincide with the central axis of the soft inner tube; The shaft rod is rotatably sleeved with an impeller, and the impeller, the moving rod and the fixed rod are arranged in sequence.

2. A double-layer tunnel drainage pipe according to claim 1, characterized in that: A reset mechanism is arranged between the fixed rod and the movable rod, and the reset mechanism is used to drive the movable rod to reset.

3. A double-layer tunnel drainage pipe according to claim 2, characterized in that: The reset mechanism is a reset spring; One end of the return spring is configured to be fixedly connected to the fixed rod, and the other end of the return spring is configured to be fixedly connected to the moving rod.

4. A double-layer tunnel drainage pipe according to claim 3, characterized in that: The shaft rod passes through the return spring, and the center axis of the return spring coincides with the center axis of the shaft rod.

5. The double-layer tunnel drainage pipe according to claim 1, characterized in that: The moving rod is rotatably connected to the impeller, and the diameter of the impeller is smaller than the inner diameter of the soft inner tube.

6. A double-layer tunnel drainage pipe according to claim 1, characterized in that: The outer tube is a hard outer tube; The outer tube is one of a PVC tube, a PE tube or a glass fiber reinforced plastic tube.

7. The double-layer tunnel drainage pipe according to claim 1, characterized in that: The soft inner tube has a spiral skeleton inside.

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