Freeze-thaw resistant roadbed heat pipe device capable of strengthening liquefaction cooling

Abstract

The utility model discloses a freeze-thaw resistant roadbed heat pipe device capable of strengthening liquefaction cooling, which comprises a heat pipe body filled with a heat exchange working medium, the lower part of the heat pipe body is used for being arranged in a roadbed frozen soil layer, the upper part of the heat pipe body is provided with radiating fins and is exposed in the air for radiating, and the freeze-thaw resistant roadbed heat pipe device also comprises a heat pipe liquefaction cooling assembly arranged in parallel with the upper part of the heat pipe body, the liquefaction supply assembly is communicated with the heat pipe liquefaction cooling assembly through a pipeline, and the liquefaction driving assembly is connected with the liquefaction supply assembly. Structural improvement is carried out based on a traditional roadbed heat pipe, water is taken from a deep well of a permafrost layer or the external environment through the liquefaction driving assembly and the liquefaction supply assembly by means of natural force, and liquid is sprayed to the upper portion of the heat pipe body through the heat pipe liquefaction cooling assembly for liquefaction cooling. The working operation efficiency of the heat release section of the heat pipe body is improved, and heat release in the frozen soil roadbed is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of roadbed heat pipes, in particular to a freeze-thaw-resistant roadbed heat pipe device with enhanced liquefaction cooling. Background Art

[0002] Permafrost refers to land that remains frozen for three years or more under natural conditions, and is primarily distributed in cold regions at high latitudes or altitudes. Unlike roadbed engineering in conventional areas, the engineering properties of roadbed soil and its underlying soil layer in permafrost areas primarily depend on the solid-liquid phase transformation process of water in the soil caused by alternating positive and negative temperatures and fluctuations. Therefore, the impact of temperature on the stability of frozen soil roadbeds is crucial, and thermal stability in frozen soil roadbeds is the key to roadbed stability. The engineering geological problems caused by the destruction of thermal stability of frozen soil roadbeds include: thermal thaw subsidence caused by a decrease in the upper limit; changes in roadbed stability caused by changes in the strength and rheological properties of permafrost foundation soil; roadbed diseases caused by adverse frozen soil phenomena (such as ice cones and frost heaves); and uneven frost heave diseases caused by the freezing and thawing of the active layer.

[0003] A roadbed heat pipe, also known as a heat rod, is a highly efficient heat-conducting device made of seamless carbon steel pipe. The lower portion (heat-absorbing section) is buried directly in permafrost, while the upper portion (heat-releasing section) is exposed and equipped with fins. The interior is filled with a low-boiling-point liquid heat exchange medium. When the ambient temperature is lower than the permafrost surrounding the heat rod's heat-absorbing section, the liquid in the heat rod absorbs heat from the permafrost and evaporates into vapor. Driven by the pressure differential within the pipe, the vapor flows upward along the central channel of the heat rod to the upper portion. Upon encountering the cooler pipe wall, it releases its latent heat of vaporization and condenses into liquid. Under the influence of gravity, it flows back along the pipe wall to the heat-absorbing section, where it evaporates again. This repetitive cycle dissipates heat from the permafrost in the foundation to the atmosphere. Due to the heat rod's one-way heat transfer, it stores a large amount of cold in the permafrost in winter, preventing it from melting in summer and forming a "permafrost layer." This strengthens the permafrost and effectively prevents frost heave and thaw settlement during operation of railways and highways built on permafrost.

[0004] The heat release section of existing heat pipes primarily utilizes ambient temperature for heat dissipation, and therefore typically operates in winter but not in summer. However, due to factors such as relatively high summer temperatures and strong thermal radiation, as well as the vibration and heating of the roadbed caused by moving vehicles, frozen roadbeds can also thaw to some extent, leading to subsidence. Improving the freeze-thaw resistance of frozen roadbeds is a key issue currently being addressed by roadbed heat pipes. Utility Model Content

[0005] In response to the problems existing in the above-mentioned prior art, the utility model provides an anti-freeze-thaw roadbed heat pipe device with enhanced liquefied cooling. By adding a liquefied cooling structure on the basis of the traditional heat pipe, liquid is sprayed on the upper part of the heat pipe to improve the heat dissipation effect of the heat pipe heat release section, thereby improving the working efficiency of the heat pipe and enhancing the anti-freeze-thaw effect.

[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0007] A freeze-thaw-resistant roadbed heat pipe device with enhanced liquefied cooling comprises a heat pipe body containing a heat exchange medium, the lower portion of the heat pipe body being used to be placed in a frozen soil layer of the roadbed, the upper portion being provided with heat dissipation fins and exposed to the air for heat dissipation, and further comprising a heat pipe liquefaction cooling assembly arranged in parallel with the upper portion of the heat pipe body, a liquefaction supply assembly connected to the heat pipe liquefaction cooling assembly via a pipeline, and a liquefaction drive assembly connected to the liquefaction supply assembly, wherein the liquefaction drive assembly collects natural forces to drive the liquefaction supply assembly to draw water from the outside, and the liquefaction supply assembly uses pressure to transport the obtained external water to the heat pipe liquefaction cooling assembly and sprays it onto the upper portion of the heat pipe body for enhanced cooling.

[0008] Specifically, the liquefaction supply component includes a first reciprocating pump for drawing water, which is arranged in a deep well opened in the permafrost layer, and a liquid buffer tank connected to the first reciprocating pump through a pipeline, wherein the first reciprocating pump is driven by natural force collected by the liquefaction drive component, and the liquid buffer tank supplies liquid to the heat pipe liquefaction cooling component through a pipeline.

[0009] Specifically, the liquefaction drive assembly includes a wind turbine installed on the ground for collecting natural forces, and a reciprocating transmission rod connected to the power output shaft of the wind turbine for driving the first reciprocating pump to operate.

[0010] Furthermore, the liquefaction supply assembly also includes a second reciprocating pump for collecting compressed air, which is arranged on the ground and driven by a reciprocating transmission rod, and a compressed air tank connected to the second reciprocating pump through a pipeline, wherein the output port of the compressed air tank is connected to the heat pipe liquefaction cooling assembly through a pipeline, forming a gas-liquid mixture with the liquid supply of the liquid buffer tank, and then water mist is sprayed out by the heat pipe liquefaction cooling assembly.

[0011] Specifically, the heat pipe liquefaction cooling assembly includes a liquefaction main pipe arranged in parallel with the upper part of the heat pipe body through a bracket, and a plurality of cooling nozzles arranged at intervals on the liquefaction main pipe and facing the upper part of the heat pipe body, wherein the liquefaction main pipe is connected to the liquefaction supply assembly to receive the liquid or gas-liquid mixture transported by the liquefaction supply assembly.

[0012] Furthermore, the anti-freeze-thaw roadbed heat pipe device with enhanced liquefaction cooling also includes an atomizing planting component arranged on the side slope of the frozen roadbed and connected to the liquefaction supply component through a pipeline. The atomizing planting component uses a spraying method to provide water for the planting area configured on the side slope of the frozen roadbed.

[0013] Specifically, the atomizing planting component includes a planting pipeline arranged along the frozen soil roadbed slope, and a plurality of planting nozzles regularly arranged on the planting pipeline and facing the planting area, wherein the planting pipeline is connected to the liquefaction supply component.

[0014] Furthermore, the heat pipe liquefaction cooling assembly is configured in multiple numbers corresponding to different heat pipe bodies, and the liquefaction supply assembly supplies liquid to all the heat pipe liquefaction cooling assemblies.

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

[0016] (1) The present invention improves the structure of a conventional roadbed heat pipe. By utilizing natural forces to draw water from a deep well in the frozen soil layer or from the external environment through a liquefaction drive assembly and a liquefaction supply assembly, the liquid is sprayed onto the upper portion of the heat pipe body through a heat pipe liquefaction cooling assembly for liquefaction cooling. This improves the operating efficiency of the heat release section of the heat pipe body and promotes heat release in the frozen soil roadbed. The present invention is ingeniously designed, relatively simple in structure, easy to use, effective, and low in cost, making it suitable for use in roadbed heat pipes.

[0017] (2) The liquefaction supply assembly of the present invention extracts deep well frozen water and compressed air through a reciprocating pump to form a gas-liquid mixture, which is convenient for the heat pipe liquefaction cooling assembly to spray to form water mist, further improving the liquefaction cooling efficiency and heat dissipation effect of the heat pipe body heat release section.

[0018] (3) The utility model cleverly designs an atomizing planting component to provide a water source for the planting area configured for the frozen soil roadbed slope. After planting, the frozen soil roadbed slope is covered with plants to improve the heat resistance of the frozen soil roadbed itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0020] Figure 2 This is a structural diagram of the liquefaction supply component part in the embodiment of the present utility model.

[0021] Figure 3 This is a structural diagram of the configuration of multiple heat pipe liquefaction cooling components in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and examples. The implementation methods of the present invention include but are not limited to the following examples.

[0023] Example

[0024] like Figures 1 to 3 As shown, the anti-freeze-thaw roadbed heat pipe device with enhanced liquefied cooling includes a heat pipe body 1 containing a heat exchange medium. The lower portion of the heat pipe body is used to be placed in the roadbed frozen soil layer, and the upper portion is equipped with heat dissipation fins 2 and exposed to the air for heat dissipation. It also includes a heat pipe liquefied cooling assembly 11 arranged in parallel with the upper portion of the heat pipe body, a liquefaction supply assembly 12 connected to the heat pipe liquefied cooling assembly via a pipeline, and a liquefaction drive assembly 13 connected to the liquefaction supply assembly. The liquefaction drive assembly collects natural forces to drive the liquefaction supply assembly to draw water from the outside. The liquefaction supply assembly uses pressure to transport the obtained external water to the heat pipe liquefied cooling assembly and spray it onto the upper portion of the heat pipe body for enhanced cooling. The external water can come from a deep well 3 arranged in the frozen soil layer or from a natural water body in the external environment.

[0025] Specifically, the liquefaction supply assembly includes a first reciprocating pump 21 for drawing water, which is located in a deep well opened in the permafrost layer; a liquid buffer tank 22 connected to the first reciprocating pump via a pipeline; a second reciprocating pump 23 located on the ground for collecting compressed air; and a compressed air tank 24 connected to the second reciprocating pump via a pipeline. Alternatively, the first reciprocating pump can also be configured to draw water from a natural body of water in the external environment. The liquefaction drive assembly includes a wind turbine 25 located on the ground for collecting natural forces; and a reciprocating drive rod 26 connected to the wind turbine's power output shaft for driving the first and second reciprocating pumps. The liquid buffer tank supplies liquid to the heat pipe liquefaction cooling assembly via a pipeline, and the output port of the compressed air tank is connected to the heat pipe liquefaction cooling assembly via a pipeline to supply air. The liquid and air are mixed in the pipeline to form a gas-liquid mixture, which is then sprayed by the heat pipe liquefaction cooling assembly to form a water mist, spraying the upper portion of the heat pipe body. Due to the low temperature of deep well frozen water, it can greatly enhance the heat dissipation performance of the upper part of the heat pipe body. Moreover, the sprayed water mist can further enhance the cooling effect under the action of the ambient wind. At the same time, the water mist can also play the role of cleaning the upper part of the heat pipe body, ensuring the cleanliness of the heat pipe body, thereby ensuring the heat dissipation capacity of the heat pipe body.

[0026] Furthermore, to expand the liquefaction supply assembly's water sources, the liquid buffer tank can also be equipped with an interface for receiving water from an external water supply device. This external water supply device can be an additional refrigeration unit for the wind-solar hybrid power system, providing cooling water that is fed into the liquid buffer tank to provide a water source. Furthermore, when the liquefaction supply assembly draws water from different sources, water sources of varying temperatures can be utilized to dynamically adjust the direction and intensity of heat transfer in the heat pipe liquefaction cooling assembly, thereby releasing or blocking heat transfer from the heat pipe body to the frozen roadbed.

[0027] Specifically, the heat pipe liquefaction cooling assembly includes a liquefaction main pipe arranged in parallel with the upper part of the heat pipe body through a bracket, and a plurality of cooling nozzles arranged at intervals on the liquefaction main pipe and facing the upper part of the heat pipe body, wherein the liquefaction main pipe is connected to the liquefaction supply assembly to receive the liquid or gas-liquid mixture transported by the liquefaction supply assembly.

[0028] Furthermore, the anti-freeze-thaw roadbed heat pipe device with enhanced liquefied cooling also includes an atomized planting assembly 14 arranged on the side slope of the frozen roadbed and connected to the liquefied supply assembly via a pipeline. The atomized planting assembly uses a spraying method to provide water for the planting area configured on the side slope of the frozen roadbed. At the same time, the sprayed atomized water replenishment can replenish water to varying degrees on the sunny and shady sides of the frozen roadbed slope, eliminating the freeze-thaw difference between the sunny and shady sides of the roadbed before the planting is complete, further stabilizing the roadbed. The sprayed atomized water replenishment can also reduce road dust. Specifically, the atomized planting assembly includes a planting pipeline arranged along the side slope of the frozen roadbed, and a plurality of planting nozzles regularly arranged on the planting pipeline and facing the planting area, wherein the planting pipeline is connected to the liquefied supply assembly.

[0029] like Figure 3 As shown, in order to further reduce the cost of the device, a multiple-to-one structure of heat pipe liquefied cooling components 11 and liquefied supply components 12 can be adopted. After the heat pipe liquefied cooling components are respectively configured on different heat pipe bodies, all heat pipe liquefied cooling components are connected to the liquefied supply components through pipelines. One set of liquefied supply components supports multiple sets of road-based heat pipes, thereby realizing the maximum utilization of cooling efficiency and natural resource power.

[0030] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any changes based on the design principles of the present invention and any changes made through non-creative work on this basis shall fall within the scope of protection of the present invention.

Claims

1. A freeze-thaw resistant roadbed heat pipe device with enhanced liquefaction cooling, comprising a heat pipe body containing a heat exchange medium, the lower portion of the heat pipe body being placed in a frozen layer of the roadbed, and the upper portion being provided with heat dissipation fins and exposed to the air for heat dissipation, characterized in that: It also includes a heat pipe liquefaction cooling assembly arranged in parallel with the upper part of the heat pipe body, a liquefaction supply assembly connected to the heat pipe liquefaction cooling assembly through a pipeline, and a liquefaction drive assembly connected to the liquefaction supply assembly, wherein the liquefaction drive assembly collects natural force to drive the liquefaction supply assembly to draw water from the outside, and the liquefaction supply assembly uses pressure to transport the obtained external water to the heat pipe liquefaction cooling assembly and spray it onto the upper part of the heat pipe body for enhanced cooling.

2. The freeze-thaw-resistant roadbed heat pipe device with enhanced liquefaction cooling according to claim 1, characterized in that: The liquefaction supply component includes a first reciprocating pump for drawing water, which is arranged in a deep well opened in the permafrost layer, and a liquid buffer tank connected to the first reciprocating pump through a pipeline. The first reciprocating pump is driven by natural force collected by the liquefaction drive component, and the liquid buffer tank supplies liquid to the heat pipe liquefaction cooling component through a pipeline.

3. The freeze-thaw-resistant roadbed heat pipe device with enhanced liquefaction cooling according to claim 2, characterized in that: The liquefaction drive assembly includes a wind turbine placed on the ground for collecting natural forces, and a reciprocating transmission rod connected to the power output shaft of the wind turbine for driving the first reciprocating pump to operate.

4. The anti-freeze-thaw roadbed heat pipe device with enhanced liquefaction cooling according to claim 3, characterized in that: The liquefaction supply assembly also includes a second reciprocating pump for collecting compressed air, which is arranged on the ground and driven by a reciprocating transmission rod, and a compressed air tank connected to the second reciprocating pump through a pipeline, wherein the output port of the compressed air tank is connected to the heat pipe liquefaction cooling assembly through a pipeline, forming a gas-liquid mixture with the liquid supply of the liquid buffer tank, and then spraying water mist from the heat pipe liquefaction cooling assembly.

5. The freeze-thaw-resistant roadbed heat pipe device with enhanced liquefaction cooling according to claim 4, characterized in that: The heat pipe liquefaction cooling assembly includes a liquefaction main pipe arranged in parallel with the upper part of the heat pipe body through a bracket, and a plurality of cooling nozzles arranged at intervals on the liquefaction main pipe and facing the upper part of the heat pipe body, wherein the liquefaction main pipe is connected to the liquefaction supply assembly to receive the liquid or gas-liquid mixture transported by the liquefaction supply assembly.

6. The freeze-thaw resistant roadbed heat pipe device with enhanced liquefaction cooling according to any one of claims 1 to 5, characterized in that: It also includes an atomizing planting component that is arranged on the side slope of the frozen soil roadbed and is connected to the liquefaction supply component through a pipeline. The atomizing planting component uses a spraying method to provide water for the planting area configured on the side slope of the frozen soil roadbed.

7. The freeze-thaw resistant roadbed heat pipe device with enhanced liquefaction cooling according to claim 6, characterized in that: The atomizing planting component includes a planting pipeline arranged along the frozen soil roadbed slope, and a plurality of planting nozzles regularly arranged on the planting pipeline and facing the planting area, wherein the planting pipeline is connected to the liquefaction supply component.

8. The freeze-thaw resistant roadbed heat pipe device with enhanced liquefaction cooling according to claim 6, characterized in that: The heat pipe liquefaction cooling assembly is configured in multiples corresponding to different heat pipe bodies, and the liquefaction supply assembly supplies liquid to all the heat pipe liquefaction cooling assemblies.

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