Permafrost roadbed ablation device

Abstract

The utility model discloses a permafrost roadbed ablation device, which belongs to the technical field of permafrost roadbeds, and comprises a hot rod, a plurality of radiating fins are uniformly and fixedly connected to the outer surface of the upper end of an inner cavity of the hot rod, two clamping rings are symmetrically sleeved on the outer surface of the hot rod, a fixed frame is sleeved on the outer surfaces of the clamping rings, and the fixed frame is fixed on the outer surface of the hot rod. An inner cavity of the fixing frame is rotationally connected with a two-way screw rod, and one side of the fixing frame is fixedly connected with a fixing plate; a plurality of cooling fins are installed at the upper end of the hot bar, the contact area with surrounding air is increased, the cooling efficiency of the top of the hot bar is improved, a plurality of conical backflow rods are installed at the top of an inner cavity of the hot bar to promote falling of a liquid working medium, backflow of the liquid working medium is guided and accelerated through a sliding groove, and high efficiency of the heat exchange process is ensured. And the heat dissipation efficiency of the hot rod is greatly improved, so that heat energy can be quickly transferred to the ground surface from the underground and dissipated.

Description

Technical Field

[0001] This utility model relates to the field of frozen soil subgrade technology, and more specifically, to a permafrost subgrade ablation device. Background Technology

[0002] This permafrost thawing device primarily prevents permafrost thawing through the operation of heat pipes. The heat pipe is a non-powered cooling system, hollow inside and filled with a working medium. When the outside temperature is lower than the underground permafrost temperature, the liquid working medium inside the heat pipe absorbs heat from the ground and evaporates into gas. This gas is then transported upwards to the surface under gravity or a slight pressure difference. Upon reaching the surface, this gas condenses upon encountering cold air, releasing latent heat, and becomes liquid again, flowing back down the pipe walls to the underground portion, completing one cycle.

[0003] Chinese Patent Publication No. CN213507870U discloses a novel frozen soil roadbed protection device, including a frozen soil roadbed heating rod. The surface of the heating rod is provided with a heating ring, and a fixing seat is provided at the bottom of the heating rod. The bottom of the heating rod is engaged with the fixing seat. A guide groove is formed at the bottom end of the heating rod. A fixing rod is fixed inside the fixing seat and engaged with the guide groove. Fixing blocks are symmetrically arranged on the surface of the heating rod, and a fixing shaft connects the fixing blocks to the heating rod. Screw holes are symmetrically formed on the surface of the fixing seat. This invention, through its designed fixing seat, allows for convenient and secure connection of the frozen soil roadbed heating rod using the designed guide groove, fixing rod, fixing blocks, fixing shaft, screw holes, through holes, and fastening bolts. Compared to existing technologies, this greatly simplifies the installation of the frozen soil roadbed heating rod.

[0004] In practical applications, existing technologies suffer from heat exchange between the medium inside the heat pipe and the evaporation section. The liquid medium flows back slowly due to gravity alone, and the friction with the inner surface of the pipe may also hinder the smooth flow of the liquid. Therefore, a permafrost roadbed ablation device is proposed. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides a permafrost roadbed melting device. It increases the contact area with the surrounding air by installing multiple heat sinks at the upper end of the heat pipe, thereby improving the heat dissipation efficiency of the top of the heat pipe. Multiple conical reflux rods are installed at the top of the inner cavity of the heat pipe to promote the falling of the liquid working fluid, and the reflux of the liquid working fluid is guided and accelerated by the chute, ensuring the high efficiency of the heat exchange process and greatly improving the heat dissipation efficiency of the heat pipe, so that heat energy can be quickly transferred from underground to the surface and dissipated.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A permafrost roadbed thawing device includes a heat pipe. Multiple heat sinks are uniformly fixedly connected to the outer surface of the upper end of the inner cavity of the heat pipe. Two clamping rings are symmetrically sleeved on the outer surface of the heat pipe. A fixing frame is sleeved on the outer surface of the clamping rings. A bidirectional screw is rotatably connected to the inner cavity of the fixing frame. A fixing plate is fixedly connected to one side of the fixing frame.

[0010] Furthermore, the heating rod is a hollow metal rod, and the inner cavity of the heating rod is filled with a working medium.

[0011] Furthermore, multiple conical reflux rods are uniformly fixedly connected to the top of the inner cavity of the heat rod, and multiple sliding grooves are uniformly opened on the inner wall of the heat rod.

[0012] Furthermore, the lower end of the heat pipe is located in the permafrost layer, the middle part of the heat pipe is located in the active layer, and the upper end of the heat pipe is located above the ground.

[0013] Furthermore, a rubber pad is fixedly connected to the inner side of the clamping ring, the lower surface of the fixing plate abuts against the ground, and the fixing plate is fixedly connected to the ground by fixing nails.

[0014] Furthermore, one end of the bidirectional screw passes through the fixed frame and is fixedly connected to a rotating handle, and a rectangular protrusion is provided on one side of the clamping ring. The clamping ring moves within the cavity of the fixed frame through the rectangular protrusion and is threadedly connected to the bidirectional screw.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] (1) This scheme increases the contact area with the surrounding air by installing multiple heat sinks at the top of the heat pipe, thereby improving the heat dissipation efficiency of the top of the heat pipe. Multiple conical reflux rods are installed at the top of the inner cavity of the heat pipe to promote the falling of the liquid working fluid. The reflux of the liquid working fluid is guided and accelerated by the chute, ensuring the high efficiency of the heat exchange process and greatly improving the heat dissipation efficiency of the heat pipe, so that the heat energy can be quickly transferred from the ground to the surface and dissipated.

[0018] (2) This solution involves placing the clamping rings on the outer surface of the heat rod and rotating the handle to drive the bidirectional screw to rotate, causing the two clamping rings to move inward simultaneously and clamp and fix them to the outer surface of the heat rod. The rubber pads provide additional friction, protecting the heat rod from mechanical damage and increasing the stability of the fixation. At this time, the fixing plate contacts the ground and the fixing nails are used to stably fix the entire device to the ground, supporting the tilted heat rod and preventing the heat rod from shifting, thus ensuring that the equipment remains stable even in harsh environments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a side view of the overall structure of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the heat pipe structure of this utility model;

[0022] Figure 4 For the present utility model Figure 3 - Enlarged structural diagram at point A;

[0023] Figure 5 This is a partial structural disassembly diagram of this utility model.

[0024] Explanation of the labels in the diagram:

[0025] 1. Heat pipe; 2. Heat sink; 3. Conical reflux rod; 4. Slide groove; 5. Clamping ring; 6. Fixing frame; 7. Double-acting screw; 8. Rotary handle; 9. Fixing plate; 10. Fixing pin. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1

[0030] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This is the first embodiment of the present invention. This embodiment provides a permafrost roadbed melting device, including a heat pipe 1, and multiple heat sinks 2 are uniformly fixedly connected to the outer surface of the upper end of the inner cavity of the heat pipe 1.

[0031] Specifically, the heat pipe 1 is a hollow metal rod. The inner cavity of the heat pipe 1 is filled with working medium. Multiple conical reflux rods 3 are uniformly fixedly connected to the top of the inner cavity of the heat pipe 1. Multiple sliding grooves 4 are uniformly opened on the inner wall of the heat pipe 1. The lower end of the heat pipe 1 is located in the frozen soil layer, the middle part of the heat pipe 1 is located in the active layer, and the upper end of the heat pipe 1 is located above the ground.

[0032] Furthermore, the heat pipe 1 is installed at an angle between the ground and the permafrost layer. Multiple heat sinks 2 are installed at the upper end of the heat pipe 1 to increase the contact area with the surrounding air and improve the heat dissipation efficiency of the top of the heat pipe. Multiple conical reflux rods 3 are installed at the top of the inner cavity of the heat pipe 1 to promote the falling of the liquid working fluid and guide and accelerate the reflux of the liquid working fluid through the chute 4, ensuring the high efficiency of the heat exchange process and greatly improving the heat dissipation efficiency of the heat pipe, so that heat energy can be quickly transferred from underground to the surface and dissipated.

[0033] Heat pipe 1 is usually made of a metal with high thermal conductivity, such as copper or aluminum. It is hollow inside and is used to contain the working medium, such as water, ammonia, acetone, etc. The media are selected according to different application environments. Heat sink 2 is mostly made of aluminum alloy, which has good thermal conductivity and a large specific surface area, improving heat dissipation efficiency. Conical reflux rod 3 is generally made of stainless steel or copper, which helps the liquid medium to reflux quickly and reduce energy loss.

[0034] The portion of heat pipe 1 located above or near the ground surface is called the heat dissipation section. This is the area of ​​heat pipe 1 responsible for dissipating heat to the surrounding environment. When the working fluid vapor inside heat pipe 1 rises to this section, it condenses into liquid upon contact with the cold surface, releasing latent heat. This heat is absorbed by the surrounding air, thus achieving the purpose of cooling. The portion of heat pipe 1 located near the ground, between the permafrost layer and the ground surface, is called the insulation section. Its main function is to reduce the conduction of heat from the heat dissipation section to the heat absorption section, ensuring that most of the heat can be effectively dissipated rather than flowing back into the ground. It plays an insulating role, making the entire system work more efficiently. The portion of heat pipe 1 that extends deep underground, within the permafrost layer, is called the heat absorption section. This is the key area in heat pipe 1 for absorbing underground heat. When the underground temperature is higher than the boiling point of the working fluid inside the heat pipe, the working fluid evaporates here to form vapor, which then moves upward along the heat pipe to the heat dissipation section. In this way, the heat absorption section can effectively extract excess underground heat, helping to maintain the low temperature of the permafrost layer and preventing it from melting due to changes in the external temperature.

[0035] Example 2

[0036] Reference Figure 1 , Figure 2 and Figure 5 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. Two clamping rings 5 ​​are symmetrically sleeved on the outer surface of the heat rod 1. A fixing frame 6 is sleeved on the outer surface of the clamping rings 5. A bidirectional screw 7 is rotatably connected to the inner cavity of the fixing frame 6. A fixing plate 9 is fixedly connected to one side of the fixing frame 6.

[0037] Specifically, a rubber pad is fixedly connected to the inner side of the clamping ring 5, the lower surface of the fixing plate 9 abuts against the ground, the fixing plate 9 is fixedly connected to the ground by fixing nails 10, one end of the bidirectional screw 7 passes through the fixing frame 6 and is fixedly connected to the rotating handle 8, a rectangular protrusion is provided on one side of the clamping ring 5, the clamping ring 5 moves in the inner cavity of the fixing frame 6 through the rectangular protrusion and is threadedly connected to the bidirectional screw 7.

[0038] Furthermore, the clamping ring 5 is fitted onto the outer surface of the heat rod 1, and the rotation of the handle 8 drives the bidirectional screw 7 to rotate, causing the two clamping rings 5 ​​to move inward simultaneously and clamp and fix to the outer surface of the heat rod 1. The rubber pad provides additional friction, protecting the heat rod 1 from mechanical damage and increasing the stability of the fixation. At this time, the fixing plate 9 contacts the ground and the fixing nail 10 stably fixes the entire device to the ground, supporting the tilted heat rod 1 and preventing the heat rod 1 from shifting, ensuring that the equipment remains stable even in harsh environments.

[0039] Working principle: During the operation of the device, the heat pipe 1 is installed at an angle between the ground and the frozen soil layer. Multiple heat sinks 2 are installed on the upper end of the heat pipe 1 to increase the contact area with the surrounding air and improve the heat dissipation efficiency of the top of the heat pipe. Multiple conical reflux rods 3 are installed on the top of the inner cavity of the heat pipe 1 to promote the fall of the liquid working fluid and guide and accelerate the reflux of the liquid working fluid through the slide 4, ensuring the high efficiency of the heat exchange process and greatly improving the heat dissipation efficiency of the heat pipe. This allows heat energy to be quickly transferred from the ground to the surface and dissipated. The clamping rings 5 ​​are fitted on the outer surface of the heat pipe 1, and the rotation of the handle 8 drives the bidirectional screw 7 to rotate, causing the two clamping rings 5 ​​to move inward at the same time to clamp and fix them to the outer surface of the heat pipe 1. The rubber pad provides additional friction, protecting the heat pipe 1 from mechanical damage and increasing the stability of the fixation. At this time, the fixing plate 9 contacts the ground and the fixing nails 10 fix the entire device stably on the ground, supporting the tilted heat pipe 1 and preventing the heat pipe 1 from shifting, ensuring that the equipment remains stable even in harsh environments.

[0040] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A permafrost roadbed thawing device, comprising a heat pipe (1), characterized in that: Multiple heat sinks (2) are uniformly fixedly connected to the outer surface of the upper end of the inner cavity of the heat rod (1). Two clamping rings (5) are symmetrically sleeved on the outer surface of the heat rod (1). A fixing frame (6) is sleeved on the outer surface of the clamping rings (5). A bidirectional screw (7) is rotatably connected to the inner cavity of the fixing frame (6). A fixing plate (9) is fixedly connected to one side of the fixing frame (6). The heat rod (1) is a hollow metal rod. The inner cavity of the heat rod (1) is filled with a working medium. The top of the inner cavity of the heat rod (1) is uniformly fixedly connected to... The heat rod (1) is connected to multiple conical reflux rods (3). Multiple sliding grooves (4) are evenly opened on the inner wall of the heat rod (1). The lower end of the heat rod (1) is located in the frozen soil layer. The middle part of the heat rod (1) is located in the active layer. The upper end of the heat rod (1) is located above the ground. One end of the bidirectional screw (7) passes through the fixed frame (6) and is fixedly connected to the rotating handle (8). A rectangular protrusion is provided on one side of the clamping ring (5). The clamping ring (5) moves in the inner cavity of the fixed frame (6) through the rectangular protrusion and is threadedly connected to the bidirectional screw (7).

2. The permafrost roadbed thawing device according to claim 1, characterized in that: A rubber pad is fixedly connected to the inner side of the clamping ring (5), the lower surface of the fixing plate (9) abuts against the ground, and the fixing plate (9) is fixedly connected to the ground by fixing nails (10).

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