Soil body anti-freezing system and method applied to seasonally frozen ground region

Abstract

This application provides a soil antifreeze system and method for use in seasonally frozen soil regions, belonging to the field of soil antifreeze technology. The soil antifreeze system includes a power supply component, a heat storage component, a heat release component, and a heat transfer component. The heat storage component is electrically connected to the power supply component. The heat storage component decomposes calcium hydroxide and temporarily stores the decomposition products. The heat release component performs an exothermic reaction between calcium oxide and water and temporarily stores the resulting calcium hydroxide. The heat transfer component transfers the heat generated during the exothermic reaction to the soil in the frozen soil region, thereby heating and preventing freezing. The outlet end of the heat release component is connected to the inlet end of the heat storage component to supply calcium hydroxide to the heat storage component. The system also includes a power component to provide power, enabling communication between the heat storage component and the heat release component. This soil antifreeze system effectively prevents frost heave in seasonally frozen soil regions.

Description

Technical Field

[0001] This application relates to the field of soil antifreeze technology, and more specifically, to a soil antifreeze system and method applied in seasonally frozen soil areas. Background Technology

[0002] Permafrost is a type of soil or rock containing ice and with a temperature below 0°C. It is a low-temperature geological body widely distributed on the Earth's surface, and permafrost regions are rich in land, forests, and mineral resources. Its existence and evolution have a significant impact on human living environment, production, and sustainable development. In recent years, long tunnels, high-speed railways, highways, and large-scale water conservancy projects have been increasingly deployed and constructed in western mountainous and high-altitude regions. Sometimes, tight schedules necessitate construction during the freezing period, raising the question of how to prevent the soil and work surfaces from freezing during construction.

[0003] Currently, common methods for preventing frost damage to soil and work surfaces at construction sites involve directly covering the soil with blankets, straw mats, or geotextiles. However, these methods lack the ability to actively heat the soil, resulting in poor frost protection and an inability to prevent freezing. This is especially problematic when the soil has already frozen, as rapid thawing is impossible. Furthermore, construction sites typically cover large areas with significant soil volume and extensive construction work, requiring large-scale, wide-ranging frost protection. Clearly, the existing methods described above not only consume substantial manpower and resources but also suffer from poor frost protection and low thawing efficiency. Summary of the Invention

[0004] This application provides a soil antifreeze system and method for use in seasonally frozen soil areas, which can effectively prevent frost heave of soil in seasonally frozen soil areas.

[0005] In a first aspect, embodiments of this application provide a soil antifreeze system for seasonally frozen soil regions. The soil antifreeze system includes a power supply component, a heat storage component, a heat release component, and a heat transfer component. The power supply component provides electrical energy. The heat storage component is electrically connected to the power supply component and is used to decompose calcium hydroxide and temporarily store the calcium oxide and water in the decomposition products. The heat release component is connected to the outlet end of the heat storage component and is used to exothermically react the calcium oxide and water in the decomposition products and temporarily store the calcium hydroxide produced by the reaction. The heat transfer component is connected to the heat release component and is used to transfer the heat generated by the heat release component during the exothermic reaction to the soil in the frozen soil region to heat and prevent freezing. The outlet end of the heat release component is connected to the inlet end of the heat storage component to provide calcium hydroxide to the heat storage component. The soil antifreeze system for seasonally frozen soil regions also includes a power component to provide power so that the products between the heat storage component and the heat release component can flow.

[0006] In this scheme, the soil antifreeze system employs a thermochemical heat storage method. First, electrical energy is supplied to the heat storage component via a power supply component, bringing it to the reaction temperature of calcium hydroxide. This allows the calcium hydroxide to decompose, producing calcium oxide and water, which are then temporarily stored. When soil in permafrost areas requires antifreeze treatment, the calcium oxide and water are introduced into an exothermic component. This component then performs an exothermic reaction, releasing a large amount of heat that is transferred to the soil in the permafrost area through a heat transfer component, raising the soil temperature and effectively preventing freezing in seasonally frozen regions. Furthermore, the outlet of the exothermic component is connected to the inlet of the heat storage component, allowing the calcium hydroxide produced in the exothermic reaction to re-enter the heat storage component for a secondary reaction and heat storage. This cycle of heat storage and release is repeated continuously.

[0007] In some embodiments, the heat storage component includes a thermal decomposition chamber, a water tank, and a calcium oxide storage tank. The thermal decomposition chamber is used to decompose calcium hydroxide. The inlet ends of the water tank and the calcium oxide storage tank are respectively connected to the outlet end of the thermal decomposition chamber via pipelines to store the calcium oxide and water generated in the thermal decomposition chamber, respectively. The heat release component includes an exothermic reaction chamber and a calcium hydroxide storage tank. The outlet ends of the water tank and the calcium oxide storage tank are connected to the inlet end of the exothermic reaction chamber. The exothermic reaction chamber is used to allow calcium oxide and water to undergo an exothermic reaction. The inlet end of the calcium hydroxide storage tank is connected to the outlet end of the exothermic reaction chamber via pipelines to store the calcium hydroxide generated in the exothermic reaction chamber. The outlet end of the calcium hydroxide storage tank is connected to the inlet end of the thermal decomposition chamber.

[0008] In the above technical solution, the thermal decomposition chamber provides the reaction conditions for the decomposition reaction of calcium hydroxide. A water tank and a calcium oxide storage tank are respectively installed at the outlet of the thermal decomposition chamber to store the water and calcium oxide produced in the thermal decomposition chamber, providing reaction raw materials for the subsequent exothermic reaction chamber. Similarly, the exothermic reaction chamber provides the reaction conditions for the exothermic reaction of water and calcium oxide. A calcium hydroxide storage tank is installed at the outlet of the exothermic reaction chamber to store the calcium hydroxide produced in the exothermic reaction chamber, facilitating the supply of reaction raw materials for the subsequent thermal decomposition chamber.

[0009] In some embodiments, the power assembly includes a first fan, a second fan, and a third fan. The first fan is disposed in the pyrolysis chamber and is used to provide negative pressure to draw calcium hydroxide from the calcium hydroxide storage tank into the pyrolysis chamber. The second fan is disposed in the calcium oxide storage tank and is used to provide negative pressure to draw calcium oxide from the pyrolysis chamber into the calcium oxide storage tank. The third fan is disposed in the calcium hydroxide storage tank and is used to provide negative pressure to draw calcium hydroxide from the exothermic reaction chamber into the calcium hydroxide storage tank.

[0010] In the above technical solution, a first fan is installed in the pyrolysis chamber to provide power and draw calcium hydroxide from the calcium hydroxide storage tank into the pyrolysis chamber under negative pressure, providing reaction raw materials for the pyrolysis chamber. A second fan is installed in the calcium oxide storage tank to provide power and draw calcium oxide from the pyrolysis chamber into the calcium oxide storage tank under negative pressure, facilitating the temporary storage of calcium oxide in the pyrolysis chamber. A third fan is installed in the calcium hydroxide storage tank to provide power and draw calcium hydroxide from the exothermic reaction chamber into the calcium hydroxide storage tank under negative pressure, separating the calcium hydroxide from the exothermic reaction chamber and achieving buffered temporary storage of calcium hydroxide.

[0011] In some embodiments, a temperature controller, a moisture sensor, and a control module are provided in the pyrolysis chamber. The temperature controller is used to control the reaction temperature in the pyrolysis chamber to be maintained in a first temperature range. The moisture sensor is used to detect the moisture content in the pyrolysis chamber. The pyrolysis chamber is connected to a water tank through a condenser pipe. A moisture control switch is provided at the condenser pipe. The moisture control switch is electrically connected to the moisture sensor. The pyrolysis chamber is connected to a calcium oxide storage tank through a pipeline. A pressure control switch is provided on the pipeline between the pyrolysis chamber and the calcium oxide storage tank.

[0012] In the above technical solution, a temperature controller, a moisture sensor, and a control module are installed in the pyrolysis chamber. When water vapor is generated by the reaction in the pyrolysis chamber and passes through the moisture sensor, the control module controls the opening of the moisture control switch. The water vapor is condensed into water droplets through the condenser tube and flows into the water tank. When no moisture passes through the moisture sensor, the moisture control switch is closed, the pressure control switch is opened, and the second fan is started to suck the remaining calcium oxide powder in the pyrolysis chamber into the calcium oxide storage tank.

[0013] In some embodiments, a pressure sensor is installed in the pyrolysis chamber to detect the amount of calcium oxide in the pyrolysis chamber. The control module controls a pressure control switch based on the electrical signal from the pressure sensor to control the opening and closing of the pipeline between the pyrolysis chamber and the calcium oxide storage tank. When the pressure value detected by the pressure sensor is lower than a first threshold, the control module controls the pressure control switch to close and controls the first fan to start, so as to draw calcium hydroxide from the calcium hydroxide storage tank into the pyrolysis chamber.

[0014] In the above technical solution, by installing a pressure sensor in the pyrolysis chamber, when the pressure value detected by the pressure sensor is lower than the first threshold, the control module can control the pressure control switch to close and control the first fan to start, thereby drawing calcium hydroxide from the calcium hydroxide storage tank into the pyrolysis chamber, realizing a continuous supply of calcium hydroxide in the pyrolysis chamber, so that the calcium hydroxide in the calcium hydroxide storage tank can completely enter the pyrolysis chamber and be converted into decomposition products, which is convenient for preparing for subsequent heat generation work.

[0015] In some embodiments, the heat transfer assembly includes a heat dissipation pipe disposed between the exothermic reaction chamber and the soil, with at least a portion of the heat dissipation pipe located within the soil, so that heat generated in the exothermic reaction chamber is transferred to the soil to heat the soil.

[0016] In the above technical solution, the heat dissipation pipe is inserted into the soil. The heat dissipation pipe can transfer a large amount of heat generated in the heat release reaction chamber to the soil, thereby heating the soil and effectively preventing the soil in seasonally frozen soil areas from freezing.

[0017] In some embodiments, the heat transfer assembly further includes a temperature sensor, a temperature control switch, and a soil temperature controller. The temperature sensor is disposed within the soil and is used to detect the real-time temperature of the soil. The temperature control switch is used to control the opening and closing of the pipeline between the water tank and the exothermic reaction chamber, and between the calcium oxide storage tank and the exothermic reaction chamber. The soil temperature controller is used to control the opening and closing of the temperature control switch based on the electrical signal fed back by the temperature sensor. Specifically, when the soil temperature detected by the temperature sensor is lower than a second threshold, the soil temperature controller controls the temperature control switch to open, so that calcium oxide and water can enter the exothermic reaction chamber for reaction. When the soil temperature detected by the temperature sensor is higher than or equal to a third threshold, the soil temperature controller controls the temperature control switch to close.

[0018] In the above technical solution, a temperature sensor can be used to detect the soil temperature in real time. When the soil temperature detected by the temperature sensor is lower than the second threshold, the soil temperature controller controls the temperature control switch to open, so that calcium oxide and water enter the exothermic reaction chamber to carry out an exothermic reaction and heat up the soil, controlling the soil temperature between the second and third thresholds. When the soil temperature detected by the temperature sensor is higher than or equal to the third threshold, the soil temperature controller controls the temperature control switch to close, stopping the exothermic reaction.

[0019] In some embodiments, a heat sensor, a heat controller, and a heat control switch are provided in the exothermic reaction chamber. The heat sensor is used to detect the heat in the exothermic reaction chamber, and the heat controller is used to control the heat control switch according to the signal from the heat sensor to realize the opening and closing of the pipeline between the exothermic reaction chamber and the calcium hydroxide storage tank. When the heat sensor cannot receive the heat signal, the heat controller controls the third fan to start to provide negative pressure to draw the reaction product calcium hydroxide in the exothermic reaction chamber into the calcium hydroxide storage tank.

[0020] In the above technical solution, a heat sensor is installed in the exothermic reaction chamber. When the exothermic reaction ends and no heat is generated, the heat control switch is turned on, and the third fan is started to draw the reaction product calcium hydroxide into the calcium hydroxide storage tank. Then, the reaction product calcium hydroxide in the calcium hydroxide storage tank is introduced into the thermal decomposition chamber through a pipeline, thus realizing a cycle of summer heat storage and winter heat release for soil antifreezing in seasonally frozen soil areas.

[0021] In some embodiments, the power supply components are configured as wind power generation modules and / or solar panels.

[0022] In the above technical solution, by using wind power and / or solar power as the power supply components, it is green and environmentally friendly, and can effectively improve energy utilization.

[0023] Secondly, this application also provides a method for a soil antifreeze system applied to seasonally frozen soil areas. Based on the soil antifreeze system applied to seasonally frozen soil areas, the method includes the following steps: leveling the site of the frozen soil area, laying an antifreeze layer on the top layer of soil in the frozen soil area, burying the soil antifreeze system on one side of the frozen soil area, arranging a heat transfer component between the heat release component and the soil in the frozen soil area, arranging a drainage pipe in the soil in the frozen soil area, the drainage pipe being used to drain the water after thawing in the soil, and setting a drainage ditch at the bottom layer of the frozen soil area, so that the end of the drainage pipe is connected to the drainage ditch.

[0024] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 Schematic diagrams of soil antifreeze systems applied in seasonally frozen soil regions provided in some embodiments of this application;

[0027] Figure 2 for Figure 1 Schematic diagram of the power supply component;

[0028] Figure 3 for Figure 1 A schematic diagram of the structure of a soil antifreeze system applied in seasonally frozen soil regions, excluding the power supply components.

[0029] Figure 4 This is a schematic diagram of a soil cross-section in a frozen soil region provided for some embodiments of this application.

[0030] Icons: 10-Power supply component; 11-Solar panel; 12-Wind power generation module; 13-Charging controller; 14-Battery; 20-Heat storage component; 21-Thermodecomposition chamber; 210-Temperature controller; 211-Pressure sensor; 212-Moisture sensor; 213-Moisture control switch; 214-Condenser; 215-Pressure control switch; 22-Water tank; 23-Calcium oxide storage tank; 24-Temperature control switch; 25-Temperature sensor; 26-Soil temperature controller; 30-Heat release component; 31-Heat release reaction chamber; 310-Heat pipe; 311-Heat sensor; 32-Calcium hydroxide storage tank; 40-Heat transfer component; 41-Heat dissipation pipe; 50-First fan; 51-Second fan; 52-Third fan; 60-Soil; 70-Antifreeze layer; 71-Drainage pipe; 72-Drainage ditch. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] 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 further defined and explained in subsequent figures.

[0034] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use. This is only for the convenience of describing this application and simplifying the description, and does 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. Therefore, it should not be construed as a limitation of this application. Furthermore, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up" and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] Example

[0037] The inventor discovered that in recent years, long tunnels, high-speed railways, highways, and large-scale water conservancy facilities have been increasingly constructed in the mountainous and frigid regions of western China. Sometimes, tight schedules necessitate construction during freezing periods, raising the question of how to prevent the soil and work surfaces from freezing. However, current antifreeze measures for soil and work surfaces at construction sites are not entirely satisfactory. Most methods involve directly covering the soil or work surfaces with quilts, straw mats, or geotextiles. However, these measures cannot actively heat the objects being protected, failing to guarantee against freezing, especially when the objects are already frozen. Rapid thawing is also impossible, resulting in poor antifreeze performance.

[0038] Therefore, this application provides a soil antifreeze system for seasonally frozen soil regions, suitable for cross-seasonal heat storage. It features high heat storage density, high heat storage efficiency, small output temperature fluctuations, ease of long-term storage, and the ability to simultaneously store both hot and cold water. Soil antifreeze is achieved by utilizing the large amount of heat released from the reaction of calcium oxide with water. For details, please refer to... Figure 1 , Figure 2 and Figure 3 The soil antifreeze system includes a power supply component 10, a heat storage component 20, a heat release component 30, and a heat transfer component 40. The power supply component 10 provides electrical energy. The heat storage component 20 is electrically connected to the power supply component 10 and is used to decompose calcium hydroxide and temporarily store the calcium oxide and water in the decomposition products. The heat release component 30 is connected to the outlet end of the heat storage component 20 and is used to exothermically react the calcium oxide and water in the decomposition products and temporarily store the calcium hydroxide produced by the reaction. The heat transfer component 40... Connected to the exothermic component 30, the heat transfer component 40 is used to transfer the heat generated by the exothermic component 30 during the exothermic reaction to the soil 60 in the frozen soil area, so as to heat and prevent the soil 60 in the frozen soil area from freezing; wherein, the outlet end of the exothermic component 30 is connected to the inlet end of the heat storage component 20 to provide calcium hydroxide to the heat storage component 20. The soil 60 antifreeze system applied to the seasonal frozen soil area also includes a power component, which is used to provide power so that the products between the heat storage component 20 and the exothermic component 30 can flow.

[0039] In this scheme, the soil 60 antifreeze system employs a thermochemical heat storage method. First, electrical energy is supplied to the heat storage component 20 via a power supply component, bringing it to the reaction temperature of calcium hydroxide. This allows the calcium hydroxide to decompose, producing calcium oxide and water, which are then temporarily stored. When soil 60 in the frozen soil area requires antifreeze treatment, the calcium oxide and water are introduced into the exothermic component 30. The exothermic component 30 then performs an exothermic reaction on the calcium oxide and water. The large amount of heat released is transferred to the soil 60 in the frozen soil area through the heat transfer component 40, raising the temperature of the soil and effectively preventing freezing in seasonally frozen soil regions. Furthermore, the outlet of the exothermic component 30 is connected to the inlet of the heat storage component 20, allowing the calcium hydroxide produced by the exothermic reaction to re-enter the heat storage component 20 for a secondary reaction and heat storage. This cycle of heat storage and release is repeated continuously.

[0040] In some embodiments, the heat storage component 20 includes a thermal decomposition chamber 21, a water tank 22, and a calcium oxide storage tank 23. The thermal decomposition chamber 21 is used to decompose calcium hydroxide. The inlet ends of the water tank 22 and the calcium oxide storage tank 23 are respectively connected to the outlet end of the thermal decomposition chamber 21 through pipelines to store the calcium oxide and water generated in the thermal decomposition chamber 21, respectively. The heat release component 30 includes an exothermic reaction chamber 31 and a calcium hydroxide storage tank 32. The outlet ends of the water tank 22 and the calcium oxide storage tank 23 are connected to the inlet end of the exothermic reaction chamber 31. The exothermic reaction chamber 31 is used to allow calcium oxide and water to undergo an exothermic reaction. The inlet end of the calcium hydroxide storage tank 32 is connected to the outlet end of the exothermic reaction chamber 31 through a pipeline to store the calcium hydroxide generated in the exothermic reaction chamber 31. The outlet end of the calcium hydroxide storage tank 32 is connected to the inlet end of the thermal decomposition chamber 21.

[0041] The thermal decomposition chamber 21 provides the reaction conditions for the decomposition reaction of calcium hydroxide. A water tank 22 and a calcium oxide storage tank 23 are respectively installed at the outlet end of the thermal decomposition chamber 21. The water tank 22 and the calcium oxide storage tank 23 can store the water and calcium oxide produced in the thermal decomposition chamber 21, providing reaction raw materials for the subsequent exothermic reaction chamber 31. Similarly, the exothermic reaction chamber 31 provides the reaction conditions for the exothermic reaction of water and calcium oxide. A calcium hydroxide storage tank 32 is installed at the outlet end of the exothermic reaction chamber 31 to store the calcium hydroxide produced in the exothermic reaction chamber 31, facilitating the supply of reaction raw materials for the subsequent thermal decomposition chamber 21.

[0042] In some embodiments, the power assembly includes a first fan 50, a second fan 51, and a third fan 52. The first fan 50 is disposed in the pyrolysis chamber 21 and provides negative pressure to draw calcium hydroxide from the calcium hydroxide storage tank 32 into the pyrolysis chamber 21. The second fan 51 is disposed in the calcium oxide storage tank 23 and provides negative pressure to draw calcium oxide from the pyrolysis chamber 21 into the calcium oxide storage tank 23. The third fan 52 is disposed in the calcium hydroxide storage tank 32 and provides negative pressure to draw calcium hydroxide from the exothermic reaction chamber 31 into the calcium hydroxide storage tank 32. By disposing of the first fan 50 in the pyrolysis chamber 21, power can be provided to draw calcium hydroxide from the calcium hydroxide storage tank 32 into the pyrolysis chamber 21 under negative pressure, thus providing reaction raw materials for the pyrolysis chamber 21. By installing a second fan 51 in the calcium oxide storage tank 23, the second fan 51 can provide power to draw calcium oxide from the pyrolysis chamber 21 into the calcium oxide storage tank 23 under negative pressure, thus facilitating the temporary storage of calcium oxide in the pyrolysis chamber 21. A third fan 52 is installed in the calcium hydroxide storage tank 32. The third fan 52 can provide power to draw calcium hydroxide from the exothermic reaction chamber 31 into the calcium hydroxide storage tank 32 under negative pressure, thereby separating the calcium hydroxide from the exothermic reaction chamber 31 and achieving buffered temporary storage of calcium hydroxide.

[0043] In some embodiments, a temperature controller 210, a moisture sensor 212, and a control module are provided in the pyrolysis chamber 21. The temperature controller 210 is used to control the reaction temperature in the pyrolysis chamber 21 to maintain it in a first temperature range. The moisture sensor 212 is used to detect the amount of moisture in the pyrolysis chamber 21. The pyrolysis chamber 21 is connected to the water tank 22 through a condenser pipe 214. A moisture control switch 213 is provided at the condenser pipe 214. The moisture control switch 213 is electrically connected to the moisture sensor 212. The pyrolysis chamber 21 is connected to the calcium oxide storage tank 23 through a pipeline. A pressure control switch 215 is provided on the pipeline between the pyrolysis chamber 21 and the calcium oxide storage tank 23. A temperature controller 210, a moisture sensor 212, and a control module are installed in the pyrolysis chamber 21. When water vapor is generated by the reaction in the pyrolysis chamber 21 and passes through the moisture sensor 212, the control module controls the opening of the moisture control switch 213. The water vapor is condensed into water droplets through the condenser pipe 214 and flows into the water tank 22. When no moisture passes through the moisture sensor 212, the moisture control switch 213 is closed, the pressure control switch 215 is opened, and the second fan 51 is started to suck the remaining calcium oxide powder in the pyrolysis chamber 21 into the calcium oxide storage tank 23.

[0044] It should be noted that the moisture sensor 212 mentioned above uses a humidity-sensitive resistor sensor, which covers a film made of moisture-sensitive material on a substrate. When water vapor in the air is adsorbed on the moisture-sensitive film, the resistivity and resistance value of the element will change accordingly. By making full use of this characteristic, moisture can be measured, and the sensitivity is high.

[0045] The first temperature range is 500℃~600℃, that is, the temperature controller 210 controls the temperature in the pyrolysis chamber 21 to be between 500℃ and 600℃. The pyrolysis chamber 21 is equipped with a heating component, and the temperature controller 210 controls the heating component to maintain the temperature in the pyrolysis chamber 21.

[0046] In some embodiments, a pressure sensor 211 is installed inside the pyrolysis chamber 21 to detect the amount of calcium oxide in the pyrolysis chamber 21. The control module controls the pressure control switch 215 based on the electrical signal from the pressure sensor 211 to control the opening and closing of the pipeline between the pyrolysis chamber 21 and the calcium oxide storage tank 23. When the pressure value detected by the pressure sensor 211 is lower than a first threshold, the control module controls the pressure control switch 215 to close and controls the first fan 50 to start, so as to draw calcium hydroxide from the calcium hydroxide storage tank 32 into the pyrolysis chamber 21. By installing the pressure sensor 211 inside the pyrolysis chamber 21, when the pressure value detected by the pressure sensor 211 is lower than the first threshold, the control module can control the pressure control switch 215 to close and control the first fan 50 to start, thereby drawing calcium hydroxide from the calcium hydroxide storage tank 32 into the pyrolysis chamber 21, realizing a continuous supply of calcium hydroxide in the pyrolysis chamber 21, so that the calcium hydroxide in the calcium hydroxide storage tank 32 can completely enter the pyrolysis chamber 21 and be converted into decomposition products, which is convenient for preparing for subsequent heat generation.

[0047] It should be noted that the pressure sensor 211 mentioned above is a semiconductor piezoresistive diffusion pressure sensor 211. Its working principle is to form semiconductor deformation pressure on the surface of the thin film. The thin film is deformed by external force (pressure) to generate piezoresistive effect, thereby converting the change in impedance into an electrical signal.

[0048] In some embodiments, the heat transfer assembly 40 includes a heat dissipation pipe 41 disposed between the exothermic reaction chamber 31 and the soil 60. At least a portion of the heat dissipation pipe 41 is located within the soil 60, so that the heat generated in the exothermic reaction chamber 31 is transferred to the soil 60 to heat the soil 60. By extending the heat dissipation pipe 41 into the soil 60, the heat dissipation pipe 41 can transfer a large amount of heat generated in the exothermic reaction chamber 31 to the soil 60, heating the soil 60 and effectively preventing the soil from freezing in seasonally frozen soil areas.

[0049] The exothermic reaction chamber 31 is equipped with a heat-conducting pipe 310, which guides the heat from the chamber outwards. A heat dissipation pipe 41 contacts the heat-conducting pipe 310, transferring heat from the heat-conducting pipe 310 to the heat dissipation pipe 41. The heat dissipation pipe 41 then contacts the soil 60, thereby heating the soil 60. Furthermore, the heat dissipation pipe 41 can be S-shaped, U-shaped, or threaded.

[0050] In some embodiments, the heat transfer assembly 40 further includes a temperature sensor 25, a temperature control switch 24, and a soil temperature controller 26. The temperature sensor 25 is disposed within the soil 60 and is used to detect the real-time temperature of the soil 60. The temperature control switch 24 is used to control the opening and closing of the pipeline between the water tank 22 and the exothermic reaction chamber 31, and between the calcium oxide storage tank 23 and the exothermic reaction chamber 31. The soil temperature controller 26 is used to control the opening and closing of the temperature control switch 24 according to the electrical signal fed back by the temperature sensor 25. Specifically, when the temperature of the soil 60 detected by the temperature sensor 25 is lower than a second threshold, the soil temperature controller 26 controls the temperature control switch 24 to open, so that calcium oxide and water can enter the exothermic reaction chamber 31 to react. When the temperature of the soil 60 detected by the temperature sensor 25 is higher than or equal to a third threshold, the soil temperature controller 26 controls the temperature control switch 24 to close. Temperature sensor 25 can detect the temperature of soil 60 in real time. When the temperature of soil 60 detected by temperature sensor 25 is lower than the second threshold, soil temperature controller 26 controls temperature control switch 24 to open, so that calcium oxide and water enter the exothermic reaction chamber 31 to carry out an exothermic reaction and heat up the soil 60, controlling the soil temperature between the second threshold and the third threshold. When the temperature of soil 60 detected by temperature sensor 25 is higher than or equal to the third threshold, soil temperature controller 26 controls temperature control switch 24 to close, stopping the exothermic reaction.

[0051] The soil temperature controller 26 has a preset second threshold temperature of 3℃ and a third threshold temperature of 10℃, which can be set according to actual conditions. The temperature sensor 25 is a thermistor sensor with an accuracy of ±0.05℃, used to detect soil temperature.

[0052] In some embodiments, a heat sensor 311, a heat controller, and a heat control switch are installed in the exothermic reaction chamber 31. The heat sensor 311 is used to detect the heat in the exothermic reaction chamber 31, and the heat controller is used to control the heat control switch according to the signal from the heat sensor 311, so as to realize the opening and closing of the pipeline between the exothermic reaction chamber 31 and the calcium hydroxide storage tank 32. When the heat sensor 311 cannot receive a heat signal, the heat controller controls the third fan 52 to start, so as to provide negative pressure to draw the reaction product calcium hydroxide in the exothermic reaction chamber 31 into the calcium hydroxide storage tank 32. By installing the heat sensor 311 in the exothermic reaction chamber 31, when the exothermic reaction ends and no heat is generated, the heat control switch is opened, and the third fan 52 is started to draw the reaction product calcium hydroxide into the calcium hydroxide storage tank 32. Then, the reaction product calcium hydroxide in the calcium hydroxide storage tank 32 is introduced into the thermal decomposition chamber 21 through the pipeline, realizing a cyclical soil antifreeze system for seasonally frozen soil areas that stores heat in summer and releases heat in winter.

[0053] The power supply component 10 can be a combination of various power supply mechanisms, such as solar power generation, wind power generation, battery 14, or grid power supply.

[0054] For example, the power supply component 10 is configured as a wind power generation module 12 and / or a solar panel 11. By using wind power and / or solar power as the power supply component, it is environmentally friendly and can effectively improve energy utilization.

[0055] In this embodiment, the power supply component 10 includes a wind power generation module 12, a solar panel 11, a charge controller 13, and a battery 14. The solar panel 11 can generate electricity using solar energy and store the electrical energy in the battery 14. The wind power generation module 12 can generate electricity using wind energy and store the electrical energy in the battery 14. The charge controller 13 plays a control role, storing the generated electrical energy in the battery 14 and preventing further energy storage when the battery 14 is fully charged. The battery 14 can provide electrical energy to the pyrolysis chamber 21 when needed, maintaining the reaction temperature in the pyrolysis chamber 21 within a first temperature range. Solar and wind power generation have the advantages of being green and environmentally friendly, and can effectively improve energy utilization.

[0056] Understandably, this embodiment utilizes the chemical principle of the reaction between calcium oxide and water, with the chemical equation: CaO + H₂O = Ca(OH)₂. Heat calculations show that the complete reaction of 100g of CaO releases 116.37 kJ of heat. Soil, being a mixture of minerals, organic matter, water or solutions, and air, does not have a fixed specific heat capacity. It is estimated that when soil porosity is 50% and water content is 30%, the volumetric heat capacity of soil is generally 168 J / cm³. 3·℃. According to calculations, the amount of heat required to raise the temperature of 1 cubic centimeter of soil from 3℃ to 10℃ is approximately 1.176 kilojoules.

[0057] Secondly, embodiments of this application also provide a method for a soil antifreeze system applied to seasonally frozen soil regions. Based on this soil antifreeze system for seasonally frozen soil regions, please refer to... Figure 4 The method includes the following steps: leveling the site of the frozen soil area, laying an antifreeze layer 70 on the top layer of soil in the frozen soil area, burying a soil antifreeze system on one side of the frozen soil area, arranging the heat dissipation pipe 41 in the heat transfer component between the heat dissipation component and the soil in the frozen soil area, arranging a drainage pipe 71 in the soil of the frozen soil area, the drainage pipe 71 is used to drain the water in the soil after thawing, and setting a drainage ditch 72 at the bottom layer of the frozen soil area, so that the end of the drainage pipe 71 is connected to the drainage ditch 72.

[0058] A frost-resistant layer 70, also known as an insulation layer, is installed on the soil or construction surface. The insulation material within this layer can be slag, sawdust, wood shavings, straw, straw mats, expanded perlite, etc. A one-way drainage pipe 71 is installed within the soil or construction surface to drain thawed water. A drainage ditch 72 is constructed around the construction surface of the soil 60 to drain water from the drainage pipe 71. The insulation material can be slag, sawdust, wood shavings, straw, straw mats, expanded perlite, etc. The one-way drainage pipe can be a PVC pipe with several inlet holes on its outer wall to facilitate water entry into the drainage pipe 71.

[0059] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0060] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A soil anti-freezing system applied to a seasonally frozen ground region, characterized in that, include: Power supply components are used to provide electrical energy; A heat storage component is electrically connected to the power supply component. The heat storage component is used to decompose calcium hydroxide and temporarily store the calcium oxide and water in the decomposition products. A heat-releasing component is connected to the outlet end of the heat storage component. The heat-releasing component is used to exothermically react calcium oxide and water in the decomposition products and temporarily store the calcium hydroxide produced by the reaction. A heat transfer component is connected to the heat release component. The heat transfer component is used to transfer the heat generated by the heat release component during the exothermic reaction to the soil in the frozen soil area, so as to heat and prevent the soil in the frozen soil area from freezing. The outlet end of the heat release component is connected to the inlet end of the heat storage component to provide calcium hydroxide to the heat storage component. The soil antifreeze system applied in seasonally frozen soil areas also includes a power component to provide power so that the products between the heat storage component and the heat release component can flow.

2. The soil antifreeze system for seasonally frozen soil regions as described in claim 1, characterized in that, The thermal storage component includes a thermal decomposition chamber, a water tank, and a calcium oxide storage tank. The thermal decomposition chamber is used to decompose calcium hydroxide. The inlet ends of the water tank and the calcium oxide storage tank are respectively connected to the outlet end of the thermal decomposition chamber through pipelines to store the calcium oxide and water generated in the thermal decomposition chamber, respectively. The exothermic assembly includes an exothermic reaction chamber and a calcium hydroxide storage tank. The outlets of the water tank and the calcium hydroxide storage tank are connected to the inlet of the exothermic reaction chamber. The exothermic reaction chamber is used for the exothermic reaction of calcium oxide and water. The inlet of the calcium hydroxide storage tank is connected to the outlet of the exothermic reaction chamber via a pipeline to store the calcium hydroxide produced in the exothermic reaction chamber. The outlet of the calcium hydroxide storage tank is connected to the inlet of the thermal decomposition chamber.

3. The soil antifreeze system for seasonally frozen soil regions as described in claim 2, characterized in that, The power assembly includes: A first fan is installed in the pyrolysis chamber. The first fan is used to provide negative pressure to draw calcium hydroxide from the calcium hydroxide storage tank into the pyrolysis chamber. A second fan is installed in the calcium oxide storage tank. The second fan is used to provide negative pressure to draw calcium oxide from the pyrolysis chamber into the calcium oxide storage tank. A third fan is installed in the calcium hydroxide storage tank. The third fan is used to provide negative pressure to draw calcium hydroxide from the exothermic reaction chamber into the calcium hydroxide storage tank.

4. The soil antifreeze system for seasonally frozen soil regions as described in claim 3, characterized in that, The pyrolysis chamber is equipped with a temperature controller, a moisture sensor, and a control module. The temperature controller is used to maintain the reaction temperature in the pyrolysis chamber within a first temperature range. The moisture sensor is used to detect the moisture content in the pyrolysis chamber. The pyrolysis chamber is connected to the water tank via a condenser pipe. A moisture control switch is installed at the condenser pipe, and the moisture control switch is electrically connected to the moisture sensor. The pyrolysis chamber is connected to the calcium oxide storage tank via a pipeline. A pressure control switch is installed on the pipeline between the pyrolysis chamber and the calcium oxide storage tank.

5. The soil antifreeze system for seasonally frozen soil regions as described in claim 4, characterized in that, A pressure sensor is installed in the pyrolysis chamber to detect the amount of calcium oxide in the chamber. The control module controls the pressure control switch based on the electrical signal from the pressure sensor to control the opening and closing of the pipeline between the pyrolysis chamber and the calcium oxide storage tank. When the pressure value detected by the pressure sensor is lower than a first threshold, the control module controls the pressure control switch to close and controls the first fan to start, so as to draw calcium hydroxide from the calcium hydroxide storage tank into the pyrolysis chamber.

6. The soil antifreeze system for seasonally frozen soil regions as described in claim 2, characterized in that, The heat transfer assembly includes a heat dissipation pipe disposed between the exothermic reaction chamber and the soil, with at least a portion of the heat dissipation pipe located within the soil, so that the heat generated by the exothermic reaction chamber is transferred to the soil to heat the soil.

7. The soil antifreeze system for seasonally frozen soil regions as described in claim 6, characterized in that, The heat transfer component also includes: A temperature sensor is installed in the soil, and the temperature sensor is used to detect the real-time temperature of the soil. A temperature control switch is used to control the opening and closing of the pipeline between the water tank and the exothermic reaction chamber, and between the calcium oxide storage tank and the exothermic reaction chamber; A soil temperature controller is used to control the opening and closing of a temperature control switch based on an electrical signal fed back by the temperature sensor; wherein, when the soil temperature detected by the temperature sensor is lower than a second threshold, the soil temperature controller controls the temperature control switch to open, so that calcium oxide and water can enter the exothermic reaction chamber for reaction; when the soil temperature detected by the temperature sensor is higher than or equal to a third threshold, the soil temperature controller controls the temperature control switch to close.

8. The soil antifreeze system for seasonally frozen soil regions as described in claim 3, characterized in that, The exothermic reaction chamber is equipped with a heat sensor, a heat controller, and a heat control switch. The heat sensor is used to detect the heat in the exothermic reaction chamber, and the heat controller is used to control the heat control switch according to the signal from the heat sensor to open and close the pipeline between the exothermic reaction chamber and the calcium hydroxide storage tank. When the heat sensor cannot receive a heat signal, the heat controller controls the third fan to start, so as to provide negative pressure to draw the reaction product calcium hydroxide from the exothermic reaction chamber into the calcium hydroxide storage tank.

9. The soil antifreeze system for seasonally frozen soil regions as described in claim 1, characterized in that, The power supply components are configured as wind power generation modules and / or solar panels.

10. A method for a soil antifreeze system applied in seasonally frozen soil regions, based on the soil antifreeze system for seasonally frozen soil regions as described in any one of claims 1-9, characterized in that, Includes the following steps: The site of the frozen soil area is leveled, an antifreeze layer is laid on the top layer of soil in the frozen soil area, the soil antifreeze system is buried on one side of the frozen soil area, the heat transfer component is arranged between the heat release component and the soil in the frozen soil area, a drainage pipe is arranged in the soil in the frozen soil area, the drainage pipe is used to drain the water after the soil thaws, and a drainage ditch is set at the bottom layer of the frozen soil area, so that the end of the drainage pipe is connected to the drainage ditch.

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