Anti-frost heaving system for light-gathering and heat-collecting wind-heat circulation channel

Abstract

The invention discloses a condensation and heat collection wind-heat circulation channel frost heaving prevention system, and belongs to the technical field of water conservancy project channel frost heaving prevention, the condensation and heat collection wind-heat circulation channel frost heaving prevention system comprises a wind driving device, a temperature control device, a heating and heat preservation device and a geothermal device, the wind driving device is arranged above the heating and heat preservation device and is connected with the heating and heat preservation device, and the temperature control device is installed on the heating and heat preservation device; and the heating insulation device is connected with the geothermal device. According to the light-gathering and heat-collecting wind-heat circulation channel frost heaving resisting system, rich wind energy and solar energy in a drought and cold region are fully utilized to directionally regulate and control the temperature of base soil of the channel bottom, the temperature of the base soil around the channel can be effectively increased, frost heaving is slowed down, damage to the channel structure is prevented, and the system is free of electronic elements or complex mechanical structures, low in cost and high in practicability. The durability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-freezing heaving of water conservancy project channels, and particularly to a wind-heat circulation channel anti-freezing heaving system with light collection and heat collection. Background Art

[0002] There are significant technical limitations in the current anti-freezing heaving prevention and control system for channel projects. From the perspective of the protection mechanism, conventional passive protection measures (including soil replacement, structural optimization, and application of insulation boards, etc.) are mainly indirect protection based on the frost heaving damage mechanism, and their prevention and control effects are limited by the attenuation of material properties and the uncontrollability of complex freeze-thaw environments; while the active heating technology, although it belongs to the energy intervention type of protection, has high operating costs and insufficient environmental adaptability due to relying on traditional energy supply. It should be noted that arid and cold regions generally have natural energy endowment characteristics such as strong solar radiation and large geothermal gradients, but the existing technical system has not established an energy efficiency conversion mechanism between natural energy and engineering protection, resulting in an application blank of renewable energy in the field of anti-freezing heaving. This technical status quo makes it difficult to achieve the fundamental governance goal of full-cycle and low-energy consumption for channel frost damage prevention and control. Summary of the Invention

[0003] The purpose of the present invention is to provide a wind-heat circulation channel anti-freezing heaving system with light collection and heat collection, which makes full use of the rich wind energy and solar energy in arid and cold regions to directionally regulate the temperature of the foundation soil at the bottom of the channel, can effectively increase the temperature of the foundation soil around the channel, slow down frost heaving, and prevent the destruction of the channel structure. This system has no electronic components or complex mechanical structures and has good durability.

[0004] To achieve the above purpose, the present invention provides a wind-heat circulation channel anti-freezing heaving system with light collection and heat collection, including a wind driving device, a temperature control device, a heating and insulation device, and a geothermal device. The wind driving device is placed above the heating and insulation device and is connected thereto. The temperature control device is installed on the heating and insulation device, and the heating and insulation device is connected to the geothermal device.

[0005] Preferably, the wind driving device includes a wind wheel, the wind wheel is rotatably connected to a connecting column, and the connecting column is fixedly connected to the heating and insulation device.

[0006] Preferably, the heating and insulation device includes a heating chamber, a condenser, and a heat preservation column. The heating chamber is installed on the top of the heat preservation column, and the heat preservation column is fixedly connected to the condenser through a connecting rod.

[0007] Preferably, the heating chamber includes a perforated top cover and a first solar heat collection plate, and the connecting column is fixedly installed in the middle of the top cover.

[0008] Preferably, the heat preservation column includes an external alloy and an internal heat preservation layer.

[0009] Preferably, the temperature control device includes a wind deflector, a bimetallic thermostat switch, baffles, a housing, and a second solar collector. The wind deflector is fixedly connected to the bimetallic thermostat switch. The bimetallic thermostat switch is provided with a housing outside, and one end of the bimetallic thermostat switch is fixedly connected to the housing. The housing is fixedly connected to the second solar collector, and the second solar collector is in contact with the bimetallic thermostat switch. There are two baffles arranged in the rotation direction when the wind deflector is closed.

[0010] Preferably, the wind deflector includes a circular plate surface, a connecting rod member running through the center of the plate surface, and a connecting rod. The number of connecting rod members is two. The connecting rod members are fixedly sleeved at both ends of the connecting rod. The connecting rod is fixedly connected to the plate surface. The connecting rod members are placed in the middle of the bimetallic thermostat switch and fixedly connected to one end in the middle of the bimetallic thermostat switch.

[0011] Preferably, the geothermal device includes geothermal pipes and pipe clamps. The hot air inlet end of one end of the geothermal pipe is connected to the hot air outlet end of the heat preservation column, and the cold air outlet end of the other end of the geothermal pipe is connected to the cold air circulation pipe in the heat preservation column.

[0012] Preferably, the geothermal pipe is of an S-shaped structure, and pipe clamps are clamped on the geothermal pipe. The pipe clamps are fixedly connected through a connecting plate.

[0013] Therefore, the present invention adopts the above-mentioned anti-freezing and swelling system for the wind-heat circulation channel of concentrating solar heat, and has the following beneficial effects: (1) The bimetallic thermostat switch can achieve: when the temperature is high (during the day with solar radiation), the wind deflector is opened, so that the wind wheel blows air into the heating chamber, and the hot air circulates in the foundation soil of the canal, increasing the temperature of the foundation soil of the canal; when the temperature is low (at night or without solar radiation during the day), the wind deflector is closed, and cold air cannot enter the circulation system to cause freezing and swelling of the foundation soil of the canal; (2) By constructing a multi-functional system of a heating and heat preservation device and a wind-driven device, fully coupling the natural energy characteristics of strong solar radiation and large gradient wind force in arid and cold regions, the dynamic stability and sustainability of the device functions are realized; (3) Adopting the distributed embedded pipe network technology, the hot air flow converted by solar energy is precisely distributed in a regionalized manner, and targeted thermal intervention is carried out on the freezing and swelling sensitive parts such as the non-uniform freezing depth area at the bottom of the canal and the transition zone between sunny and shady slopes, effectively inhibiting the moisture migration and the development of ice lens bodies during the phase change process of the foundation soil; (4) Through the modular adjustable structure design and interface enhancement technology, the system can adaptively match typical channel cross-section forms such as trapezoidal and arc-shaped, and relying on the multi-field coupling mechanism of the energy field - structure field - temperature field, realize the synergistic effect with existing protection measures such as composite geomembrane and drainage blind ditch, and finally form an anti-freezing and swelling technology system with full-process closed-loop control; (5) The canal is generally in a place where people rarely go, and the cost of manual maintenance is high. This system has no electronic components or complex mechanical structures and has good durability.

[0014] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the first embodiment of an anti-freezing expansion system for a wind-heat circulation channel with concentrating heat collection according to the present invention; Figure 2 is a top view of the wind driving device and the heating and heat preservation device of the first embodiment of an anti-freezing expansion system for a wind-heat circulation channel with concentrating heat collection according to the present invention; Figure 3 is a schematic principle diagram of the first embodiment of an anti-freezing expansion system for a wind-heat circulation channel with concentrating heat collection according to the present invention; Figure 4 is a schematic structural diagram of the first embodiment of an anti-freezing expansion system for a wind-heat circulation channel with concentrating heat collection according to the present invention when the temperature control device is opened and closed. (a) is a schematic structural diagram when the wind baffle is closed without sunlight, and (b) is a schematic structural diagram when the wind baffle is opened with sunlight; Figure 5 is a schematic structural diagram of the wind baffle of the first embodiment of an anti-freezing expansion system for a wind-heat circulation channel with concentrating heat collection according to the present invention; Figure 6 is a schematic principle diagram of the temperature control device of the first embodiment of an anti-freezing expansion system for a wind-heat circulation channel with concentrating heat collection according to the present invention.

[0016] Reference Signs 1. Wind wheel; 2. Heating chamber; 3. Condensing mirror; 4. Heat preservation column; 5. Geothermal pipeline; 6. Pipe clamp; 7. Cold air circulation pipe; 8. Top cover; 9. Connecting rod; 10. Bimetallic thermostatic switch; 11. Wind baffle; 12. Baffle; 13. Outer shell; 14. Plate surface; 15. Connecting rod member; 16. Link rod; 17. First solar heat collection plate; 18. Second solar heat collection plate. Detailed Embodiments

[0017] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings as understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0019] Embodiment 1 As Figure 1 、 Figure 3 shown, the present invention provides an anti-freezing and swelling system for a wind-heat circulation channel with light concentration and heat collection, which includes a wind driving device, a temperature control device, a heating and heat preservation device, and a geothermal device. The wind driving device is placed above the heating and heat preservation device and is connected thereto. The temperature control device is installed on the heating and heat preservation device, and the heating and heat preservation device is connected to the geothermal device. The wind driving device is used to blow wind into the heating and heat preservation device, the heating and heat preservation device is used to heat the blown cold air, the temperature control device is used to prevent the backflow of cold air, and the geothermal device is used for geothermal exchange and anti-freezing and swelling prevention and control. Through the modular adjustable structure design and interface enhancement technology, the system can adaptively match typical channel cross-section forms such as trapezoidal and arc-shaped, and rely on the multi-field coupling mechanism of the energy field - structure field - temperature field to achieve synergistic effects with existing protection measures such as composite geomembrane and drainage blind ditch, and finally form an anti-freezing and swelling technology system with full-process closed-loop control.

[0020] The wind driving device and the heating and heat preservation device are as Figure 2 shown, wherein the wind driving device includes a wind wheel 1. The wind wheel 1 is rotationally connected to a connecting column, and the connecting column is fixedly connected to the heating and heat preservation device. The wind wheel 1 converts wind energy into mechanical energy. When the wind drives the wind wheel 1 to rotate, a downward wind force is generated, blowing air into the heating and heat preservation device for heating.

[0021] The heating and heat preservation device includes a heating chamber 2, a condenser lens 3 and a heat preservation column 4. The heating chamber 2 includes a perforated top cover 8 and a first solar heat collector 17. The connecting column is fixedly installed in the middle of the top cover 8. When sunlight shines on the surface of the first solar heat collector 17, through the selective absorption coating, it can efficiently absorb the short-wave radiation energy in sunlight. The copper wire under the absorption coating quickly heats up, and then transfers the heat energy to the cold air blown in by the wind wheel 1 through heat conduction, achieving the purpose of heating with solar energy. The heating chamber 2 is installed on the top of the heat preservation column 4. The heat preservation column 4 is fixedly connected to the condenser lens 3 through a connecting rod 9. The condenser lens 3 is a parabolic trough-shaped ring condenser lens 3, and its core function is to reflect and focus a large area of sunlight onto a small area receiver to generate high-temperature heat energy. The heat preservation column 4 includes an external alloy and an internal heat preservation layer, and the heat preservation column 4 plays the roles of transmitting hot air, heat preservation, support and connection of various components.

[0022] The temperature control device includes a wind baffle 11, a bimetallic temperature control switch 10, a baffle 12, a housing 13 and a second solar heat collector 18. The wind baffle 11 is fixedly connected to the bimetallic temperature control switch 10. The bimetallic temperature control switch 10 is provided with a housing 13 outside, and one end of the bimetallic temperature control switch 10 is fixedly connected to the housing 13, and the housing 13 is used to protect the bimetallic temperature control switch 10. The housing 13 is fixedly connected to the second solar heat collector 18, and the second solar heat collector 18 is used to absorb solar energy. It works together with the first solar heat collector 17 to enable the heating of air, the opening of the wind baffle 11, and the closing of the wind baffle 11 when there is no sunlight or weak sunlight to be synchronized. The second solar heat collector 18 is in contact with the bimetallic temperature control switch 10. There are two baffles 12 in the rotation direction when the wind baffle 11 is closed, and the baffles 12 can stop the rotation function of the wind baffle 11 at the closed position.

[0023] The wind baffle 11 is used to prevent cold air from flowing back due to the lack of sunlight heating at night. As Figure 4 shown, where Figure 4 (a) in it is a schematic structural diagram of the wind baffle 11 closed when there is no sunlight, Figure 4 (b) in it is a schematic structural diagram of the wind baffle 11 opened when there is sunlight. The wind baffle 11 includes a circular plate surface 14, a connecting rod member 15 running through the center of the plate surface 14 and a connecting rod 16. As Figure 5As shown, the number of connecting rods 15 is two. The connecting rods 15 are fixedly sleeved at both ends of the connecting rod 16. The connecting rod 16 is fixedly connected to the plate surface 14. The connecting rods 15 are placed in the middle of the bimetal temperature control switch 10 and are fixedly connected to one end in the middle of the bimetal temperature control switch 10. The bimetal temperature control switch 10 is composed of two layers of metal sheets. The inner layer is a copper sheet and the outer layer is an iron sheet. The bimetal temperature control switch 10 utilizes the difference in the thermal expansion coefficients of these two different metals. These two metals are combined together and one end is fixed to the housing 13. When the temperature changes, the two metals expand differently thermally. The other end of the bimetal temperature control switch 10 drives the connecting rod 15 to deflect, and the wind deflector 11 deflects by rotating around the connecting rod 16 to control the intake and exhaust of air, as Figure 6 shown.

[0024] The geothermal device includes geothermal pipes 5 and pipe clamps 6. The geothermal pipes 5 are of an S-shaped structure and are placed 30 cm away from the lining board in the canal foundation soil, placed parallel to the lining board, and are used to transport the air heated by solar energy to increase the ground temperature. A plurality of pipe clamps 6 are clamped on the geothermal pipes 5. The pipe clamps 6 are fixedly connected through connecting plates. The pipe clamps 6 are used to connect the parallel pipes to prevent the pipes from being overly deformed due to factors such as soil deformation, which may affect the smooth flow of air or even cause air leakage due to breakage. The hot air inlet end of one end of the geothermal pipe 5 is connected to the hot air outlet end of the heat preservation column 4, and the cold air outlet end of the other end of the geothermal pipe 5 is connected to the cold air circulation pipe 7 in the heat preservation column 4.

[0025] When the concentrating solar heat and wind heat circulation canal anti-freezing system provided by the present invention is in use, during the day, the second solar heat collecting plate 18 absorbs solar energy and converts it into heat energy to heat the bimetal temperature control switch 10. Due to the different thermal expansion coefficients of the two different metals of the bimetal temperature control switch 10, it will drive the connecting rod 15 in the middle to rotate clockwise. The connecting rod 15 drives the plate surface 14 to rotate clockwise, so that the plate surface 14 is opened. The wind drives the wind wheel 1 to rotate, and presses the air into the heating chamber 2 where the plate surface 14 is opened. The first solar heat collecting plate 17 absorbs the radiant energy concentrated and reflected by the condenser 3 to heat the iron wire inside the heating chamber 2, and then heats the air inside to raise the temperature. The heated hot air enters the geothermal system from the hot air inlet through the heat preservation column 4. Subsequently, the S-shaped geothermal pipe 5 uses the heat of the hot air to heat the canal foundation soil. The heat-exchanged cold air enters the cold air circulation pipe 7 through the cold air inlet. The temperature of the cold air gradually rises in the heat preservation column 4, and after the final heating in the heating chamber 2, it enters the heat preservation column 4 to participate in the hot air circulation, forming a complete cold and hot circulation supplement system.

[0026] When in the night state, the bimetal temperature control switch 10 controls the connecting rod 15 to rotate counterclockwise. The connecting rod 15 drives the plate surface 14 to rotate counterclockwise, so that the plate surface 14 is closed, and the cold air at the wind wheel 1 no longer enters the heating chamber 2.

[0027] Therefore, the present invention adopts the above-mentioned anti-freezing and swelling system for a wind-heat circulation channel with concentrating heat collection, which makes full use of the abundant wind energy and solar energy in the arid and cold regions to regulate the temperature of the bottom base soil of the channel in a directional manner, can effectively increase the temperature of the base soil around the channel, slow down the frost heaving, and prevent the damage of the channel structure. This system has no electronic components or complex mechanical structures and has good durability.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A wind-heat circulation channel anti-freezing and swelling system for concentrating heat collection, characterized in that: It includes a wind driving device, a temperature control device, a heating and heat preservation device, and a geothermal device. The wind driving device is placed above the heating and heat preservation device and is connected thereto. The temperature control device is installed on the heating and heat preservation device, and the heating and heat preservation device is connected to the geothermal device.

2. The anti-freezing and swelling system for a wind-heat circulation channel with concentrating heat collection according to claim 1, characterized in that: The wind driving device includes a wind wheel. The wind wheel is rotatably connected to a connecting column, and the connecting column is fixedly connected to the heating and heat preservation device.

3. The anti-freezing and swelling system for the wind-heat circulation channel of the concentrating heat collection according to claim 2, characterized in that: The heating and heat preservation device includes a heating chamber, a condenser lens, and a heat preservation column. The heating chamber is installed at the top of the heat preservation column, and the heat preservation column is fixedly connected to the condenser lens through a connecting rod.

4. The anti-freezing and swelling system for the wind-heat circulation channel of the concentrating heat collection according to claim 2, wherein: The heating chamber includes a perforated top cover and a first solar heat collector. The connecting column is fixedly installed in the middle of the top cover.

5. The anti-freezing and swelling system for the wind-heat circulation channel of the concentrating heat collection according to claim 3, characterized in that: The heat preservation column includes an external alloy and an internal heat preservation layer.

6. The anti-freezing and swelling system for the wind-heat circulation channel of the concentrating heat collection according to claim 1, wherein: The temperature control device includes a wind baffle, a bimetallic thermostat switch, a baffle, a housing, and a second solar heat collector. The wind baffle is fixedly connected to the bimetallic thermostat switch. The bimetallic thermostat switch is provided with a housing outside, and one end of the bimetallic thermostat switch is fixedly connected to the housing. The housing is fixedly connected to the second solar heat collector. The second solar heat collector is in contact with the bimetallic thermostat switch. There are two baffles arranged in the rotational direction when the wind baffle is closed.

7. A frost heaving resistant system for a wind-heat circulation channel of a concentrating heat collection according to claim 6, characterized in that: The wind baffle includes a circular plate surface, a connecting rod member passing through the center of the plate surface, and a connecting rod. The number of the connecting rod members is two. The connecting rod members are fixedly sleeved at both ends of the connecting rod, and the connecting rod is fixedly connected to the plate surface. The connecting rod members are placed in the middle of the bimetallic thermostat switch and are fixedly connected to one end of the middle of the bimetallic thermostat switch.

8. A frost heaving resistant system for a wind-heat circulation channel with concentrating heat collection according to claim 3, characterized in that: The geothermal device includes a geothermal pipeline and a pipe clamp. One end of the hot air inlet end of the geothermal pipeline is connected to the hot air outlet end of the heat preservation column, and the other end of the cold air outlet end of the geothermal pipeline is connected to the cold air circulation pipe in the heat preservation column.

9. The anti-freezing and swelling system for the wind-heat circulation channel of the concentrating heat collection according to claim 8, wherein: The geothermal pipeline is of an S-shaped structure. Pipe clamps are clamped on the geothermal pipeline, and the pipe clamps are fixedly connected through a connecting plate.

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