Power-free low-temperature river water guiding auxiliary cooling device for high-temperature tunnel

Abstract

The utility model provides a high-temperature tunnel power-free low-temperature river water leading auxiliary cooling device, which comprises a siphon water pipe, a starting device and an air supply cooling device, the temperature of river water is lower than that of the tunnel, the siphon water pipe comprises a water inlet and a water outlet, the water inlet is directly or indirectly positioned in a river channel, and the starting device is directly or indirectly positioned in the river channel. The water inlet is lower than the river water level line of the river channel, the elevation of the water inlet is lower than that of the water outlet, the starting device can be connected with the water outlet, and liquid is filled into the pipe cavity through the starting device when the pipe cavity of the siphon water pipe is not filled with liquid until the pipe is full. According to the auxiliary cooling device, the siphon effect is utilized through the siphon suction water pipe, low-temperature river water is guided without power to assist in cooling of the high-temperature tunnel, energy consumption caused by a traditional water pump and other modes is reduced, and therefore resources can be saved, and construction cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction engineering technology, specifically to a device for cooling high-temperature tunnels by diverting low-temperature river water without power. Background Technology

[0002] As tunnel engineering develops towards greater depth, size, and length, high ground temperature has become one of the unavoidable geological hazards in tunnel construction. Currently, cooling and control methods for high-temperature tunnels include two types: non-artificial cooling and artificial cooling. Non-artificial cooling includes natural ventilation, surrounding rock insulation, and hot water sealing, while artificial cooling includes ice cooling and water cooling technologies. Ice cooling and water cooling technologies utilize ice or cold water for artificial cooling, which is effective but requires the use of refrigeration units and heat dissipation, consuming significant energy and necessitating waste heat treatment.

[0003] In high-altitude and frigid regions, researchers have used low-temperature river water to aid in heat dissipation in tunnels, utilizing the river water's low temperature to cool the ventilation ducts. However, the process of diverting low-temperature river water often requires the use of tools such as water pumps due to factors such as elevation, and the water diversion process consumes energy, leading to increased construction costs. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary cooling device that can reduce energy consumption during the process of diverting low-temperature river water.

[0005] Therefore, the present invention adopts the following technical solution:

[0006] A high-temperature tunnel cooling device that uses low-temperature river water without power input includes a siphon water pipe, a starting device, and an air supply cooling device. The temperature of the river water is lower than the temperature of the tunnel. The siphon water pipe includes an inlet and an outlet. The inlet is located directly or indirectly in the river channel and is below the river water level. The elevation of the inlet is lower than the elevation of the outlet. The starting device can be connected to the outlet. When the siphon water pipe is not fully filled with liquid, liquid is injected into the pipe through the starting device. The length of the siphon water pipe is greater than at least twice the distance between the river channel and the air supply cooling device. The air supply cooling device includes an air cooler. The siphon water pipe includes an intermediate pipe section arranged inside the air cooler. The air cooler includes an air outlet facing the tunnel.

[0007] Furthermore, the air supply and cooling device also includes a blower, the air cooler includes a duct connected to the cooler body, the intermediate pipe section is arranged around the duct, the duct includes the air outlet, and one end of the duct is connected to the blower.

[0008] Furthermore, the starting device includes a water supply pipe, a machine body, and a drain pump. The drain pump is located in the inner cavity of the machine body, which includes an opening through which water is filled into the inner cavity. One end of the water supply pipe is connected to the drain pump, and the other end of the water supply pipe can be connected to the water outlet.

[0009] Furthermore, the starting device also includes a variable diameter air-punching interface, which is sealed to the water supply pipe and the water outlet.

[0010] Furthermore, the difference between the elevation of the outlet and the elevation of the inlet is greater than 1m.

[0011] Furthermore, the diameter of the siphon water pipe is 3-6 mm.

[0012] Furthermore, the siphon water pipe is made of PU material, and the number of siphon water pipes is greater than or equal to 1, with the middle section of each siphon water pipe simultaneously connected to the interior of the air cooler.

[0013] Furthermore, the auxiliary cooling device also includes reinforcement components, which include underwater reinforcement components and ground reinforcement components. The underwater reinforcement components connect the riverbed to the section of the siphon water pipe that extends into the river channel, and the ground reinforcement components connect the ground to the section of the siphon water pipe located on the ground.

[0014] Furthermore, the siphon water pipe includes a filter element connected to the water inlet.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The auxiliary cooling device of this invention utilizes the siphon effect through a siphon-suction water pipe to achieve power-free cooling of high-temperature tunnels by drawing low-temperature river water, thereby reducing energy consumption caused by traditional water pumps and other methods, thus saving resources and reducing construction costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a partial schematic diagram of the inlet of the siphon water pipe in this patent.

[0019] Figure 3 This is a partial schematic diagram of the siphon suction water pipe outlet and the starting device of this patent.

[0020] The markings in the attached diagram are as follows: 1-Siphon suction water pipe; 2-Blower; 3-Air cooler; 4-Air duct; 5-Water inlet; 6-Water outlet; 7-Starting device; 701-Water supply pipe; 702-Body; 703-Opening; 8-Variable diameter air flushing interface. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0022] like Figure 1-3 As shown, a low-temperature river water auxiliary cooling device for high-temperature tunnels without power input is used for cooling during the construction and operation of high-temperature tunnels in high-altitude and cold regions. The auxiliary cooling device includes a siphon water pipe 1, a starting device 7, and a cooling air supply device. The temperature of the river water is lower than that of the tunnel. The siphon water pipe 1 includes an inlet 5 and an outlet 6. The inlet 5 is located directly or indirectly in the river channel and is lower than the river water level. The elevation of the inlet 5 is lower than that of the outlet 6. The starting device 7 can be connected to the outlet 6. When the siphon water pipe 1 is not filled with liquid to the full pipe, liquid is injected into the pipe through the starting device 7. Therefore, the starting device 7 can inject liquid into the siphon water pipe 1 so that the water body can be injected into the siphon water pipe 1 after the starting device 7 is activated. The length of the siphon-suction water pipe 1 is at least twice the distance between the river channel and the air supply and cooling equipment. The air supply and cooling equipment includes an air cooler 3, and the siphon-suction water pipe 1 includes an intermediate pipe section arranged inside the air cooler 3. The air cooler 3 includes an air outlet facing the tunnel. This auxiliary cooling device utilizes the siphon effect through the siphon-suction water pipe 1 to achieve power-free cooling of the high-temperature tunnel by drawing low-temperature river water, reducing the energy consumption of traditional methods such as water pumps, thereby saving resources and reducing construction costs.

[0023] In this embodiment, the air supply and cooling device also includes a blower 2, and an air cooler 3 includes a duct 4 connected to the cooler body. A middle section of the duct is arranged around the duct 4, and the duct 4 includes an air outlet. One end of the duct 4 is connected to the blower 2. This allows air to circulate with the outside air, thereby forming an air supply and cooling channel inside the duct 4 and the cooler body, achieving continuous cooling of the high-temperature tunnel.

[0024] In this embodiment, the siphon water pipe 1 connects the inlet 5 directly or indirectly to the low-temperature river water. Then, the starting device 7 fills the siphon water pipe 1 with water through the outlet 6, which can expel the original air in the cavity of the siphon water pipe 1. After the air is expelled, the starting device 7 is turned off, thereby starting the siphon of the siphon water pipe 1. The water in the pipe flows out from the outlet 6. While maintaining the elevation difference between the inlet 5 and the outlet 6, the siphon will continue to operate and achieve auxiliary cooling.

[0025] In this embodiment, the elevation difference between the inlet 5 and outlet 6 of the siphon water pipe 1, as well as the effect of atmospheric pressure, are necessary conditions for realizing siphon drainage. Specifically, the elevation difference between the outlet 6 and the inlet 5 of the siphon water pipe 1 is greater than 1m, which can satisfy the siphon flow of the siphon water pipe 1. The specific elevation difference can be adjusted according to the water flow velocity required for the cooling process of the low-temperature river water.

[0026] In this embodiment, the diameter of the siphon water pipe 1 is 3-6 mm. Under the constraints of a 4 mm pipe diameter and siphon elevation, the flow velocity within the pipe is limited to a certain range. For a detailed study of the flow velocity, please refer to the master's thesis of Mei Cheng at Zhejiang University. Furthermore, due to the limitation of the siphon head (the maximum head in application is about 8 m), the undulations of the pipe are generally very gentle, so there is no need to pay special attention to cavitation and air cavitation phenomena.

[0027] Furthermore, the siphon water pipe 1 is preferably 4mm. It should be noted that under the limitation of 4mm pipe diameter and siphon elevation, the flow velocity in the pipe can be limited to a certain range. In addition, due to the limitation of siphon head (taking the maximum head of about 8m during application as an example), the undulation of the siphon water pipe 1 is usually very gentle, thus avoiding cavitation and air cavitation phenomena.

[0028] Simultaneously, under high head conditions, the water in the siphon process will experience a decrease in pressure within the pipe, causing dissolved gases to precipitate. These precipitated air particles adhere to the pipe wall and, over time, rise to the top of the siphon pipe 1. This accumulation at the top can disrupt the hydraulic connection between the inlet and outlet, thus interrupting the siphon process. Selecting a specific pipe diameter can prevent air bubbles and water from accumulating at the top in a wall-following flow pattern, thus preventing the siphon process from interrupting. Instead, it ensures that the gas-liquid two-phase flow within the pipe is predominantly slug flow, allowing the siphon water to expel the air bubbles and enabling the siphon process to operate continuously. In other words, after the siphon of the 4mm diameter siphon pipe 1 is initiated, by maintaining the height difference between the inlet 5 and outlet 6, both air bubbles precipitated from the water flow and other infiltrated gases are filled with air bubbles within the siphon pipe 1 due to tension, allowing them to be expelled with the siphon flow.

[0029] In this embodiment, the siphon water pipe 1 is made of PU material. PU material has high temperature resistance and can be used as a pipe material for drawing low-temperature river water in high-temperature tunnels.

[0030] In this embodiment, the number of siphon water pipes 1 passing through and arranged inside the air cooler 3 is greater than or equal to one. By calculating the drainage rate and thermal conductivity, one or more siphon water pipes 1 can be selected for individual or combined auxiliary cooling.

[0031] In this embodiment, the starting device 7 includes a water supply pipe 701, a body 702, and a drain pump. The drain pump is located inside the body 702 and is used to transport water from the body 702 to the outside through the water supply pipe 701, so as to achieve a state where the siphon water pipe 1 is fully filled. The body 702 includes an opening 703, through which water is filled into the inner cavity. One end of the water supply pipe 701 is connected to the drain pump, and the other end of the water supply pipe 701 can be connected to the outlet 6. The end of the water supply pipe 701 connected to the drain pump is close to the inner bottom wall of the body 702.

[0032] The starting device 7 also includes a variable diameter air-punching interface 8, which is a sealed connection between the water supply pipe 701 and the water outlet 6 to ensure the sealing of the connection between the water supply pipe 701 and the water outlet 6 of the siphon water pipe 1, to ensure that the water can flow smoothly, and to reduce the pressure at the connection between the water supply pipe 701 and the siphon water pipe 1.

[0033] It should be noted that the definition of the state of the siphon water pipe 1 being fully filled is based on the criterion that the siphon water pipe 1 can achieve siphoning.

[0034] In this embodiment, the auxiliary cooling device further includes reinforcement components, including underwater reinforcement and ground reinforcement. The underwater reinforcement connects the riverbed to the section of the siphon pipe 1 extending into the river channel, while the ground reinforcement connects the ground to the section of the siphon pipe 1 located on the ground. The underwater reinforcement can be a concrete counterweight or a metal anchor, used to fix the section of the siphon pipe 1 extending into the river channel in the river water. The ground reinforcement can be pile foundations or clamps, used to connect and fix the siphon pipe 1 to the ground on the bank, preventing unnecessary displacement of the siphon pipe 1 that could interrupt the siphon and ensuring the reliability of the auxiliary cooling device.

[0035] In this embodiment, the siphon water pipe 1 includes a filter element connected to the water inlet 5. This is to prevent the water inlet 5 from being blocked by impurities, thus avoiding siphon interruption and ensuring the reliability of the auxiliary cooling device.

[0036] Please see Figure 1-3 When using auxiliary cooling devices to cool down high-temperature tunnels in high-altitude and frigid regions during construction and operation, the specific details are as follows:

[0037] S1: The middle section of the siphon water pipe 1 is pre-arranged inside the air cooler 3;

[0038] S2: Arrange the locations of the inlet 5 and outlet 6 of the siphon suction pipe 1, and the elevation of the inlet 5 is lower than the elevation of the outlet 6, while also satisfying that the elevation difference between the inlet 5 and outlet 6 is greater than 1m.

[0039] S3: Place the inlet 5 of the siphon water pipe 1 into the river water in the target area;

[0040] S4: Connect the starting device 7 to the outlet 6 so that the starting device 7 fills the siphon pipe 1 with liquid from the outlet 6 until the siphon pipe 1 is full. Specifically, this includes:

[0041] S401: Use the variable diameter air-pump interface 8 to connect the water outlet 6 of the siphon drinking water pipe 1 to the water supply pipe 701 of the starting device 7;

[0042] S402: The starting device 7 includes a body 702, which puts water into the inner cavity of the body 702 through the opening 703 of the body 702, and keeps sufficient water in the inner cavity during subsequent starting.

[0043] S403: Start the starting device 7. The water in the inner cavity rushes into the water supply pipe 701 through the drain pump and enters the cavity of the siphon drinking water pipe 1 through the variable diameter air flushing interface 8 and the water outlet 6.

[0044] S404: When a continuous stream of water without obvious bubbles flows out of the inlet 5 of the siphon water pipe 1, it can be considered that the liquid in the siphon water pipe 1 is in a full pipe state.

[0045] S5: Turn off the start-up device 7 and disconnect the start-up device 7 from the siphon water pipe 1. Due to the height difference, the water flows out continuously from the outlet 6 and is siphoned through the siphon water pipe 1 to achieve continuous and effective cooling.

[0046] The above embodiments are merely preferred technical solutions of this utility model. Those skilled in the art should understand that modifications or substitutions to the technical solutions or parameters in the embodiments can be made without departing from the principles and essence of this utility model, and all such modifications or substitutions should be covered within the protection scope of this utility model.

Claims

1. A device for cooling high-temperature tunnels without the need for power to draw low-temperature river water, characterized in that: The system includes a siphon water pipe (1), a starting device (7), and a cooling air supply device. The temperature of the river water is lower than the temperature of the tunnel. The siphon water pipe (1) includes an inlet (5) and an outlet (6). The inlet (5) is located directly or indirectly in the river channel. The inlet (5) is lower than the river water level line. The elevation of the inlet (5) is lower than the elevation of the outlet (6). The starting device (7) can be connected to the outlet (6). When the siphon water pipe (1) is not filled with liquid to the full pipe, liquid is filled into the pipe through the starting device (7). The air supply and cooling device includes an air cooler (3), the siphon water pipe (1) includes an intermediate pipe section, the intermediate pipe section is arranged inside the air cooler (3), the air cooler (3) includes an air outlet, the air outlet faces the tunnel.

2. The high-temperature tunnel cooling device without power supply and with low-temperature river water as described in claim 1, characterized in that: The air supply and cooling device also includes a blower (2), the air cooler (3) includes a duct (4) connected to the cooler body, the intermediate pipe section is arranged around the duct (4), the duct (4) includes the air outlet, and one end of the duct (4) is connected to the blower (2).

3. The high-temperature tunnel cooling device without power supply and with low-temperature river water as described in claim 1, characterized in that: The starting device (7) includes a water supply pipe (701), a body (702), and a drain pump. The drain pump is located in the inner cavity of the body (702). The body (702) includes an opening (703). The inner cavity is filled with water through the opening (703). One end of the water supply pipe (701) is connected to the drain pump, and the other end of the water supply pipe (701) can be connected to the water outlet (6).

4. The high-temperature tunnel cooling device without power supply and with low-temperature river water as described in claim 3, characterized in that: The starting device (7) also includes a variable diameter air-punching interface (8), which is sealed to the water supply pipe (701) and the water outlet (6).

5. The high-temperature tunnel cooling device without power supply and with low-temperature river water as described in claim 1, characterized in that: The difference between the elevation of the outlet (6) and the elevation of the inlet (5) is greater than 1m.

6. The high-temperature tunnel cooling device without power supply and with low-temperature river water as described in claim 1, characterized in that: The diameter of the siphon water pipe (1) is 3-6 mm.

7. The high-temperature tunnel cooling device without power supply and with low-temperature river water as described in claim 5, characterized in that: The siphon water pipe (1) is made of PU material, and the number of siphon water pipes (1) is greater than or equal to 1. The middle pipe section of each siphon water pipe (1) is connected to the interior of the air cooler (3).

8. The high-temperature tunnel cooling device without power supply and auxiliary cooling with low-temperature river water according to any one of claims 1-7, characterized in that: It also includes reinforcement components, which include underwater reinforcement components and ground reinforcement components. The underwater reinforcement components connect the riverbed to the section of the siphon water pipe (1) that extends into the river channel, and the ground reinforcement components connect the ground to the section of the siphon water pipe (1) located on the ground.

9. The high-temperature tunnel cooling device without power supply and auxiliary cooling with low-temperature river water according to any one of claims 1-7, characterized in that: The siphon suction pipe (1) includes a filter element connected to the inlet (5).

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