A cooling device suitable for ventilated roadbeds made of rubble.

Abstract

This utility model relates to the field of roadbed, specifically to a cooling device suitable for ventilated riprap roadbeds. It includes a refrigeration unit installed on the side of the roadbed; a diffused capillary cooling pipe network laid within the riprap layer and connected to the refrigeration unit; a temperature sensor for real-time monitoring of the temperature data of the riprap layer; and a temperature control box connected to both the temperature sensor and the refrigeration unit. This utility model utilizes the temperature sensor to perceive and monitor the internal temperature of the riprap roadbed in real time. When the internal temperature exceeds a threshold, the temperature control box activates the refrigeration unit, which then uniformly introduces low-temperature airflow into the riprap layer via the diffused capillary cooling pipe network. This active heat exchange cooling method lowers the temperature of the riprap layer, achieving heat exchange between the inside and outside of the roadbed and reducing the temperature of the riprap layer.

Description

Technical Field

[0001] This utility model relates to the field of roadbed, and in particular to a cooling device suitable for ventilated roadbeds made of boulders. Background Technology

[0002] In permafrost regions, ventilated riprap subgrades are a common engineering structure, but their long-term stability is affected by climate warming and external thermal disturbances. Because permafrost is extremely sensitive to temperature changes, the intrusion of external heat into the subgrade can cause it to thaw, leading to subgrade settlement, deformation, or even failure. Therefore, to ensure the stability of ventilated riprap subgrades in permafrost environments, active cooling measures must be implemented to block or reduce the intrusion of external heat and maintain the thermal balance of the permafrost. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a cooling device suitable for ventilated roadbeds made of rubble.

[0004] A cooling device suitable for ventilated roadbeds made of rubble includes: Refrigeration units are installed on the roadbed and roadside; A diffused capillary cooling pipe network is laid within the roadbed rubble layer and connected to the refrigeration unit; Temperature sensors monitor the temperature data of the roadbed boulders layer in real time; The temperature control box is connected to the temperature sensor and the refrigeration unit, respectively.

[0005] Preferably, the diffused capillary cooling network is connected to the refrigeration unit via a cooling pipe.

[0006] Preferably, the diffused capillary cooling network consists of several pipes, and the pipe walls are provided with multiple through-wall ventilation holes.

[0007] Preferably, multiple through-wall ventilation holes are evenly distributed along the pipe wall.

[0008] Preferably, the pipe is a PP-R pipe, PE-RT pipe, or PB pipe, and the pipes are connected by heat fusion.

[0009] Preferably, the diameter of the pipe is 3mm-5mm.

[0010] Preferably, the temperature sensor is installed inside the roadbed temperature measuring hole, and the temperature control box is equipped with a temperature difference controller.

[0011] Preferably, the temperature sensor is connected to the temperature control box via a temperature measuring cable.

[0012] Preferably, the refrigeration unit is a negative pressure air cooler, a low-temperature coolant circulation pump, a cooling tower, a condenser, an evaporator, an air compressor unit, or a ground source heat pump.

[0013] Preferably, the diffused capillary cooling network adopts a disc-shaped structure.

[0014] Compared with the prior art, the beneficial effects of this utility model This invention provides a cooling device suitable for ventilated roadbeds made of rubble. It uses a temperature sensor to sense and monitor the internal temperature of the rubble roadbed in real time. When the internal temperature is higher than the threshold, the temperature control box controls the start of the refrigeration unit. The low-temperature airflow is evenly introduced into the interior of the rubble layer through a diffuse capillary cooling pipe network. The active heat exchange cooling method is used to reduce the temperature of the rubble layer, thereby realizing heat exchange between the inside and outside of the roadbed and reducing the temperature of the rubble layer of the roadbed. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the cooling device for ventilated roadbeds made of rubble, as described in this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the diffused capillary cooling pipe network described in this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the through-wall ventilation hole described in this utility model.

[0018] Marked in the image: 0-Roadbed rubble layer, 1-Refrigeration unit, 2-Diffuse capillary cooling pipe network, 21-Through-wall ventilation hole, 3-Cooling pipe, 4-Temperature sensor, 5-Temperature measuring cable, 6-Temperature control box. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0020] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer" used in the description of specific embodiments of this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2mm-1mm, preferably within 0.2mm-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0022] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0023] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0024] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0025] Example 1 like Figure 1 As shown, a cooling device suitable for ventilated roadbeds made of rubble includes: a refrigeration unit 1, a diffused capillary cooling pipe network 2, a temperature sensor 4, a temperature control box 6, etc.

[0026] The refrigeration unit 1 is installed on the side of the roadbed. The refrigeration unit can be selected from negative pressure air cooler, low temperature coolant circulation pump, cooling tower, condenser, evaporator, air compressor unit or ground source heat pump, etc.

[0027] The diffused capillary cooling pipe network 2 is laid within the roadbed rubble layer 0. The diffused capillary cooling pipe network 2 is connected to the refrigeration unit 1. In a preferred embodiment, the diffused capillary cooling pipe network 2 is connected to the refrigeration unit 1 via a cold transfer pipe 3. The low-temperature airflow generated by the refrigeration unit 1 is transmitted to the diffused capillary cooling pipe network 2 through the cold transfer pipe 3. The diffused capillary cooling pipe network 2 uniformly guides the low-temperature airflow into the roadbed rubble layer 0. The diffused capillary cooling pipe network 2 achieves a uniform heat exchange effect due to its large heat exchange area and high heat exchange efficiency.

[0028] like Figure 2 As shown, in an optional embodiment, the diffused capillary cooling pipe network 2 can adopt a disc-shaped structure. That is, the diffused capillary cooling pipe network 2 can be formed by a single coiled pipe or by several pipes forming a disc-shaped structure. This structure has a large laying area, enabling large-scale uniform cooling within the roadbed boulders layer, while using a moderate amount of pipe material and having a moderate engineering cost. Because the pipe network is disc-shaped, heat can be transferred evenly, avoiding local overheating or undercooling, thereby eliminating lateral uneven deformation of the roadbed. For high-grade highways with a wide roadbed, the disc-shaped pipe network can achieve efficient coverage of the cooling area, ensuring overall temperature consistency.

[0029] In an optional embodiment, the diffused capillary cooling pipe network 2 consists of several pipes, and the pipe walls are provided with multiple through-wall ventilation holes 21, such as... Figure 3As shown, this improves the heat exchange efficiency between the ventilation system and the rubble layer. A permeable ventilation duct network with through-wall ventilation holes 21 is used, increasing the contact area between the airflow and the rubble layer. Utilizing low-temperature airflow radiation cooling + forced convection heat dissipation technology, low-temperature airflow is pumped, enabling direct heat exchange between the roadbed rubble layer 0 and the low-temperature airflow, rapidly absorbing and transferring heat, and quickly reducing the temperature of the roadbed rubble layer 0. In a preferred embodiment, multiple permeable ventilation holes 21 are evenly distributed along the duct wall, thereby improving the uniformity of heat exchange and cooling.

[0030] In optional embodiments, the pipes are made of materials such as PP-R (polypropylene), PE-RT (heat-resistant polyethylene), or PB (polybutene). The main pipes and capillary tubes can be connected by heat fusion. Due to the characteristics of the raw materials, the finished products possess excellent resistance to low temperatures, high pressures, corrosion, and flexibility, ensuring normal operation of the pipelines in various harsh environments. Furthermore, the capillary network itself has a certain degree of flexibility, which can absorb some dynamic loads, thereby reducing damage to the rock layer caused by impact or vibration, and providing a certain degree of mechanical protection.

[0031] In an optional embodiment, the diffuse capillary network 2 consists of several pipes with a diameter of 3mm-5mm. The diffuse capillary network 2 is laid horizontally embedded in the gaps between the boulders (pipe diameter 3-5mm), which will not disturb the original boulder layer structure inside the roadbed. This structure can not only increase the friction coefficient between the boulder layers by forming a contact surface between the pipe wall and the surface of the boulders, thereby improving the shear resistance of the roadbed and reducing the risk of interlayer slippage caused by external forces (such as vehicle loads, roadbed temperature changes, etc.), thus enhancing the stability of the roadbed; but also the continuous network structure formed in the gaps between the boulders can effectively disperse the roadbed stress and reduce the risk of local damage to the boulder layer under load.

[0032] The temperature sensor 4 is installed in the roadbed temperature measuring hole, and the temperature sensor 4 monitors the temperature data of the roadbed boulders layer 0 in real time; the temperature control box 6 is connected to the temperature sensor 4 and the refrigeration unit 1 respectively, and the temperature control box 6 controls the start and stop of the refrigeration unit 1 according to the temperature data monitored by the temperature sensor 4.

[0033] In an optional embodiment, the temperature sensor 4 and the temperature control box 6 are equipped with a temperature difference controller, and the temperature sensor 4 is connected to the temperature control box 6 via a temperature measuring cable 5. The temperature difference controller detects and analyzes the temperature monitoring data. When the roadbed temperature is higher than the ambient temperature, the roadside refrigeration unit 1 is started, utilizing the diffused capillary cooling pipe network 2 to radiate low-temperature airflow, thereby reducing the temperature of the roadbed boulders layer 0. When the temperature difference decreases, the refrigeration unit 1 can be stopped from operating.

[0034] The cooling device described in this invention utilizes a diffused capillary cooling pipe network 2 laid between the boulders layer 0 of the roadbed. By employing low-temperature radiative cooling technology, it uniformly introduces low-temperature airflow into the interior of the boulders layer, achieving active cooling of the roadbed interior. This invention effectively improves the heat exchange efficiency within the boulders layer, reduces the internal temperature of the roadbed, maintains the thermal balance of the permafrost, and thus preserves the stability of the underlying permafrost, reducing the occurrence of roadbed thaw settlement.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling device suitable for use in a ballast for a stone-filled ventilation road, characterized in that, include: Refrigeration unit (1) is installed on the side of the roadbed; A diffused capillary cooling network (2) is laid in the roadbed boulders layer (0) and connected to the refrigeration unit (1). The diffuse capillary cooling pipe network (2) adopts a disc-shaped structure. The diffuse capillary cooling pipe network (2) is composed of several pipes. The pipe wall is provided with multiple through-wall ventilation holes (21). The multiple through-wall ventilation holes (21) are evenly distributed along the axial and circumferential directions of the pipe wall. The diameter of the pipe is 3mm-5mm. The diffuse capillary cooling pipe network (2) is flexible. The diffuse capillary cooling pipe network (2) is laid horizontally embedded in the gaps between the stones, which can increase the friction coefficient between the stone layers and form a continuous network structure in the gaps between the stones, thus dispersing the roadbed stress. The diffuse capillary cooling network (2) is connected to the refrigeration unit (1) through the cooling pipe (3). The low-temperature airflow generated by the refrigeration unit (1) is transmitted to the diffuse capillary cooling network (2) through the cooling pipe (3). The diffuse capillary cooling network (2) uniformly introduces the low-temperature airflow into the interior of the roadbed boulders layer (0). Temperature sensor (4) monitors the temperature data of the roadbed boulders layer (0) in real time; The temperature control box (6) is connected to the temperature sensor (4) and the refrigeration unit (1) respectively.

2. A cooling device for a block stone ventilated roadbed according to claim 1, wherein The pipes are PP-R pipes, PE-RT pipes, or PB pipes, and the pipes are connected by heat fusion.

3. A cooling device for a block stone ventilated roadbed according to claim 1, wherein The temperature sensor (4) is installed in the roadbed temperature measuring hole, and the temperature control box (6) is equipped with a temperature difference controller.

4. A cooling device suitable for ventilated roadbeds made of rubble, as described in claim 3, is characterized in that, The temperature sensor (4) is connected to the temperature control box (6) via a temperature measuring cable (5).

5. A cooling device suitable for ventilated roadbeds made of rubble, as described in any one of claims 1-4, characterized in that, The refrigeration unit is a negative pressure air cooler, a low-temperature coolant circulating pump, a cooling tower, a condenser, an evaporator, an air compressor unit, or a ground source heat pump.

Images