Tunnel pipeline drainage pipe in alpine region

Abstract

The utility model relates to the technical field of engineering drainage, in particular to a tunnel pipeline drainage pipe in an alpine region. Comprising an inner pipe body and an outer pipe sleeve arranged outside the inner pipe body in a sleeving mode, a clamping sleeve layer is arranged between the inner pipe body and the outer pipe sleeve, a supporting ring and an electric heating belt are installed in the clamping sleeve layer, the outer wall of the inner pipe body is sleeved with the supporting ring in an interference fit mode, and the outer ring face of the supporting ring is matched with the inner wall of the outer pipe sleeve; the ribbon heater is connected in parallel with the power line; and a pipeline connecting mechanism is arranged at the end part of the outer pipe sleeve. The drainage pipe is good in heat preservation effect, water in the inner pipe body can be heated and unfrozen in a low-temperature environment, and the drainage efficiency is not affected while the drainage pipe is prevented from being frozen; the structure is reasonable, and construction is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of engineering drainage technical field, more specifically, it is a kind of high-cold region tunnel drainage pipe. BACKGROUND

[0002] Freezing often causes tunnel drainage pipe freezing under low temperature environment in high-cold region, causing poor drainage. Because pipeline is long, and the circumferential drainage pipe of tunnel is hung at high place in tunnel inner wall, traditional hot air thawing method and hot water thawing method all consume a lot of resources, and thawing speed is slow, effect is not obvious, cannot completely solve the problem of low temperature freezing. Chinese patent 2021115516234 discloses a traffic wind power generation heating anti-freezing system for tunnel drainage pipe in cold region, and the application publication number is CN114382536A. The system sets up electric heat tracing band in drainage pipe to heat water in drainage pipe, to prevent drainage pipe freezing. But there are many drawbacks in actual use, 1) electric heat tracing band and temperature sensor are directly in contact with water, which has the risk of accelerating aging and easy to leak; 2) electric heat tracing band and temperature sensor change the shape of the inner cavity section of the drainage pipe, causing poor water flow and easy to block; 3) tunnel drainage engineering usually needs to use multiple drainage pipes in series, and it is difficult to insert electric heat tracing band into drainage pipe after connecting drainage pipe. Even if the electric heat tracing band is inserted into the drainage pipe using a guide line, it is also difficult to arrange the posture of the electric heat tracing band in the drainage pipe, and the twisted, uncooperative and disordered electric heat tracing band is more likely to block the pipeline. SUMMARY

[0003] The utility model aims at providing a kind of high-cold region tunnel drainage pipe that is convenient for construction and does not affect drainage efficiency, which can thaw the drainage pipe under low temperature environment, prevent the drainage pipe from freezing and keep the drainage smooth.

[0004] The technical scheme adopted by the utility model to solve the technical problems is as follows:

[0005] The utility model discloses a kind of high-cold region tunnel drainage pipe including inner tube body, outer pipe sleeve being sleeved in the outer surface of the inner tube body, clamping sleeve layer is arranged between the inner tube body and outer pipe sleeve, support ring and electric heating band are installed in the clamping sleeve layer, the support ring is interference fit and is sleeved on the outer wall of inner tube body, the outer ring surface of support ring is adapted to the inner wall of outer pipe sleeve;The electric heating band is connected in parallel on power line;The end of the outer pipe sleeve is provided with pipeline connection mechanism.

[0006] Through the scheme, the drainage pipe has inner and outer two layers of pipes, and the hollow clamping sleeve layer has good heat preservation effect. The electric heating band in the clamping sleeve layer is isolated from water, which can heat the water in the inner tube body without hindering the flow of water. The support ring can facilitate the connection of the electric heating band and the power line during construction, and the pipeline connection mechanism can facilitate the installation of the pipeline in series.

[0007] Preferably, a plurality of outer annular surface wire grooves are uniformly distributed on the outer annular surface of the supporting ring, and the power supply wire is installed through the outer annular surface wire grooves.

[0008] By the scheme, the power supply wire can be conveniently connected during construction, and the insulation effect is good and short circuit is prevented.

[0009] Preferably, a plurality of inner annular surface wire grooves are uniformly distributed on the inner annular surface of the supporting ring, and the power supply wire is installed through the inner annular surface wire grooves.

[0010] By the scheme, the power supply wire can be conveniently connected during construction, and the insulation effect is good and short circuit is prevented.

[0011] Preferably, the pipeline connecting mechanism is a flange plate fixedly connected to the end surface of the outer pipe sleeve.

[0012] By the scheme, the outer pipe sleeve can be conveniently connected.

[0013] Preferably, the supporting ring is a circular truncated cone structure with an outer conical surface.

[0014] By the scheme, the supporting ring can be conveniently inserted into the jacket layer between the inner pipe body and the outer pipe sleeve.

[0015] Thanks to the above structure, the drain pipe has good heat preservation effect, can heat and thaw the water in the inner pipe body in a low temperature environment, prevents the drain pipe from freezing while not hindering the drainage efficiency, has reasonable structure and convenient construction. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings incorporated in and forming a part of the specification illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0017] Figure 1 is a three-dimensional structure schematic diagram of one embodiment of the present application.

[0018] Figure 2 is a sectional structure schematic diagram of one end of the drain pipe of the present application.

[0019] Figure 3 is a circuit schematic diagram of the electric heating belt. DETAILED DESCRIPTION

[0020] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application or its application or uses.

[0021] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus can be considered as part of the present application.

[0022] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0024] like Figure 1 , Figure 2 As shown, the drainage pipe for tunnels in cold regions according to this utility model includes an inner pipe body 1 and an outer pipe sleeve 2 fitted over the inner pipe body 1. Both the inner pipe body 1 and the outer pipe sleeve 2 are ordinary cylindrical pipe structures, and their materials can be PVC plastic pipes or metal pipes. The inner pipe body 1 can be joined by hot-melt welding or metal welding, or by pipe clamps. The welding methods for PVC plastic pipes or metal pipes, as well as the structure of the pipe clamps connecting the pipes, are existing technologies and will not be described in detail here.

[0025] The outer sleeve 2 is equipped with a pipe connection mechanism at its end, which allows two sections of the outer sleeve 2 to be connected together, thereby extending the overall length of the outer sleeve 2. In one embodiment of this invention, the pipe connection mechanism is a flange 21 fixedly connected to the end face of the outer sleeve 2. Figure 1 As shown, both ends of the outer sleeve 2 have flanges 21. The two outer sleeves 2 can be connected by bolting the opposite flanges together. Of course, pipe clamps can also be used to connect the two outer sleeves 2.

[0026] The inner diameter of the outer sleeve 2 is larger than the outer diameter of the inner tube 1. A jacket layer 3 is provided between the inner tube 1 and the outer sleeve 2, both of equal length. A support ring 4 and an electric heating tape 5 are installed in the jacket layer 3. The electric heating tape 5 can be laid flat on the outer wall of the inner tube 1 using double-sided adhesive, or it can be spirally wound around the outer wall of the inner tube 1. Each inner tube 1 has at least one support ring 4 at each end to support the outer sleeve 2, forming a jacket layer 3 of uniform thickness. This jacket layer 3 is filled with air, providing excellent insulation and preventing the water in the inner tube 1 from freezing to a certain extent.

[0027] The support ring 4 is a ring structure made of foamed rubber, and is fitted on the outer wall of the inner pipe body 1 in an interference fit, with the outer ring surface of the support ring 4 adapted to the inner wall of the outer pipe sleeve 2. In order to facilitate installation, the support ring 4 is a circular truncated cone structure with an outer conical surface. In addition, a plurality of outer ring surface grooves 41 are uniformly distributed on the outer ring surface of the support ring 4, and a plurality of inner ring surface grooves 42 can also be uniformly distributed on the inner ring surface. The power supply wire 6 for supplying power to the electric heating band 5 extends from one end of the outer pipe sleeve 2 to the other end, and the power supply wire 6 is threaded through and installed in the outer ring surface groove 41 or the inner ring surface groove 42.

[0028] As shown in Figure 3 , the electric heating band 5 is connected in parallel to the power supply wire 6, and a fuse FU and a control circuit K are connected in series on the power supply wire 6, and the control circuit K is connected to a temperature sensor T. When the temperature sensor T senses that the ambient temperature is lower than a threshold value, the control circuit K is triggered to apply a voltage to the electric heating band 5, and the electric heating band 5 generates heat to increase the temperature of the inner pipe body 1, achieving the purpose of thawing or preventing icing.

[0029] During assembly and construction, first, the electric heating band 5 is laid on the outer wall of the inner pipe body 1, which can be laid flat and adhered to the outer wall of the inner pipe body 1 by double-sided adhesive tape, or can be wound in a spiral shape on the outer wall of the inner pipe body 1. After laying, the two ends of the electric heating band 5 are slightly shorter than the inner pipe body 1, and then two power supply wires 6 that are slightly longer than the inner pipe body 1 are laid flat on the outer wall of the inner pipe body 1, and the power supply ends of the electric heating band 5 are connected to the power supply wires 6; after the first support ring 4 is sleeved on the front end of the inner pipe body 1, the end portion of the power supply wire 6 is extended to the outside through the outer ring surface groove 41 or the inner ring surface groove 42 on the support ring, and then the outer pipe sleeve 2 is sleeved from the rear end of the inner pipe body 1, until the front end of the outer pipe sleeve 2 is sleeved on the first support ring, and then the second support ring is sleeved from the rear end of the inner pipe body 1, and the second support ring is inserted into the gap between the inner pipe body 1 and the outer pipe sleeve 2, thereby completing the assembly of a group of drain pipes. In the project, if only one group of drain pipes is needed, the power supply wire 6 at one end of the drain pipe can be insulated, and the other end can be connected to the power output end of the control circuit K; if two or more groups of drain pipes need to be connected and used later, as shown in Figure 1 , first, the inner pipe bodies 1 are connected by conventional methods, which can be directly welded together or connected by pipe clamps; then the exposed power supply wires 6 are connected and insulated, which can be directly welded together or connected by connectors; after the power supply wires 6 are connected, the flanges of the outer pipe sleeves 2 of the two groups of drain pipes are fixedly connected together by bolts, and so on, so that more drain pipes can be connected to form a longer drainage system. Finally, the power supply wire 6 at one end of the drainage system is insulated, and the other end of the power supply wire is connected to the power output end of the control circuit K.

[0030] Although some specific embodiments of the utility model have been described in detail above through specific embodiments, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the protection scope of the utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the utility model. The protection scope of the utility model is defined by the appended claims.

Claims

1. A tunnel drainage pipe for high-cold region, comprising an inner pipe body (1) and an outer pipe sleeve (2) sleeved outside the inner pipe body (1), characterized in that The inner tube body (1) and the outer tube sleeve (2) are provided with a jacket layer (3), the jacket layer (3) is provided with a supporting ring (4) and an electric heating belt (5), the supporting ring (4) is provided on the outer wall of the inner tube body (1) in an interference fit, and the outer ring surface of the supporting ring (4) is matched with the inner wall of the outer tube sleeve (2); the electric heating belt (5) is connected in parallel with the power line (6); and the end of the outer tube sleeve (2) is provided with a pipeline connecting mechanism.

2. The tunnel drainage pipe according to claim 1, characterized in that, A plurality of outer ring surface wire grooves (41) are uniformly distributed on the outer ring surface of the supporting ring (4), and the power line (6) is installed in the outer ring surface wire grooves (41) in a penetrating mode.

3. The tunnel drainage pipe according to claim 1, characterized in that, A plurality of inner ring surface wire grooves (42) are uniformly distributed on the inner ring surface of the supporting ring (4), and the power line (6) is installed in the inner ring surface wire grooves (42) in a penetrating mode.

4. The tunnel drainage pipe according to claim 1 or 2 or 3, characterized in that, The pipeline connecting mechanism is a flange plate (21) fixedly connected to the end surface of the outer tube sleeve (2).

5. The tunnel drainage pipe according to claim 1 or 2 or 3, characterized in that, The supporting ring (4) is a circular truncated cone structure with an outer conical surface.

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