CN202081358U - Solar photo-thermal snow melting road surface device - Google Patents
Solar photo-thermal snow melting road surface device Download PDFInfo
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- CN202081358U CN202081358U CN2010206236405U CN201020623640U CN202081358U CN 202081358 U CN202081358 U CN 202081358U CN 2010206236405 U CN2010206236405 U CN 2010206236405U CN 201020623640 U CN201020623640 U CN 201020623640U CN 202081358 U CN202081358 U CN 202081358U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The utility model discloses a solar photo-thermal snow melting road surface device. The device mainly consists of a solar heat collecting system, a road surface radiating system and a control system. The solar heat collecting system comprises a heat collector and a hot water storage tank; the road surface radiating system comprises a heat pipe; the control system comprises a controller and a temperature sensor. The heat collector, the hot water storage tank and the heat pipe are connected by a pipeline in sequence; and then heat collection and heat dispersion can be realized by the control system. Solar energy can be directly converted into heat energy by the device so that snow accumulation on the road surface can be effectively melted.
Description
Technical field
The utility model relates to the traffic safety field, specifically is the device that descends to utilize heliotechnics melting road surface accumulated snow at snow day environment.
Background technology
Traffic department pays much attention to the traffic accident and the antiskid problem of freezing in season with the cold district road surface always both at home and abroad, and it is regional especially to freeze at road surface accumulated snow, and has made big quantity research, explores the method that multiple inhibition road surface accumulated snow freezes.Deicing or snow melting method commonly used both at home and abroad at present comprises removing method and thawing method.The removing method can be divided into two kinds of artificial removing method and mechanical removal methods again; The thawing method comprises chemical thawing method and hot thawing method.Specifically can be divided into following some.
1, spreading Snow Agent
This method is the means that a kind of road surface deicing commonly used is in the world avenged, and reduces the ice and snow melting point by spreading chemical agent on the road surface, makes ice dissolution, and then removes accumulated snow and accumulated ice.Ice-melt snow agent commonly used both at home and abroad mainly contains salt and alcohols.
From practical effect, under certain ambient conditions, the spreading Snow Agent can effectively be removed road ice and snow, and the road improvement safe condition improves road transport efficient.But the deicing effect of alcohols Snow Agent is influenced by environmental temperature, and has reef knot ice phenomenon, in case promptly environment temperature descends, the accumulated snow glaciation again of being melted makes the road surface more sliding, and road accident rate is higher.If environment temperature is crossed low or snowfall is excessive, Snow Agent self is difficult to dissolving fast, melts, must be by the effect that rolls of vehicle tyre, so ice-melt snow longer duration, weak effect causes integrated cost to raise significantly.
All there is corrosivity in most salt Snow Agent products, and perishable destruction road structure and motor vehicles also can pollute soil, water body and atmosphere etc., destroy ecological environment.A statistical report according to the U.S., use in every year under the situation of 1,000 ten thousand tons of Snow Agent, can cause 2,900,000,000～5,900,000,000 dollars loss to road, vehicle, 0.75 hundred million～1.5 hundred million dollar loss is caused in the parking lot, cause 5%～10% plant pathology even withered.In addition, the use of Snow Agent once caused Beijing that more than 4000 big tree and the death of the shrub of strain more than 40,000 were arranged in 2003, and the meadow injured area reaches more than 30,000 square metre, more than 1,500 ten thousand yuan of direct economic losses.
This method is more thorough to ice and snow removing, but efficient is low, and the expense height influences vehicle pass-through and traffic safety during operation, can not long working, be applicable to that snowfall is hour or the ice and snow removing in emphasis difficult point highway section.
2, spreading sandstone material
The sandstone material of the certain particle diameter of spreading on ice and snow road as sand, aggregate chips, ashes, cinder and sand salt compound etc., can improve the friction factor of ice and snow road.The existence of sandstone makes the freezing strength of ice and snow layer inhomogeneous on the one hand, and on the other hand, sandstone makes snow be difficult for compacting in the motion of ice and snow layer, has reached the purpose of antiskid.This method is more thorough to Snowremoval, but efficient is low, expense is high, influence the current and traffic safety of traffic and can not long working, mainly is applicable to the Snowremoval in slight snow and difficult point highway section, and this method is the passive mode operation, has hysteresis quality.
3, mechanical removal method
The mechanical removal method is owing to adopt plant equipment (motor vehicles and machines shovel, push away, the sweep etc.) device efficiency of dying height, be suitable for large tracts of land mechanization and remove operation, but when temperature is low, because the adhesion stress between ice and the road surface is bigger, use snow removal with machine effect and bad separately, not thorough to the removing of ice face, can not fundamentally solve the anti-slide performance on road surface, traffic safety can not get effective guarantee.Though and mechanical blowing snow mode snow removing safety and environmental protection, but only be applicable to airport etc. be convenient to manage, more among a small circle, without rolled, the road surface accumulated snow of thinner thickness, generally be operation while snowing, the mechanical requirements amount is big, expense is high, in case and accumulated snow is rolled or freeze then powerless, this mode is not suitable for bigger highway of the traffic volume and urban road snow removing.As seen, the mechanical type snow removing needs great amount of manpower and material resources and equipment, and belongs to the passive type hysteretic operation, need certain hour just can make traffic recover normal, and snow removing machinery is subjected to, and seasonal effect is strong, frequency of utilization is low, economic benefit is relatively poor.
4, thermal ice-melting snow method
This kind method utilizes the heat of generations such as hot water, combustion gas, electricity to make ice dissolution, as spraying the hot-water process, spraying Snow Agent method, automobile heating-mechanical thawing method etc.
Though this class methods deicing or snow melting effect is better, these methods often consume energy bigger, and the snow-broth that melts can be brought the impurity such as dust of road table into when entering road structure, accumulate in road structure inside, and then the obstruction hole, cause impeded drainage, influence the eliminating of snow-broth.
5, suppress the ice and snow technology from the stress road surface
Main by in the paving material, adding a certain amount of resilient particulate materials, change road surface and the contact condition of tire and the deformation characteristic on road surface, utilize the stronger characteristic of elastomeric material local distortion ability, by road surface outer load effect produce down from stress, make the broken thawing of ice and snow on road surfaces, thereby effectively suppress road surface accumulated snow and icing.Elastomeric material commonly used in this type of technology mostly is the rubber grain that is processed by junked tire.This not only can effectively improve the deicing ability on road surface, improves road safety performance and conevying efficiency, and for the recycling of waste and old elastomeric material provides scientific and rational new way, is beneficial to environmental protection, saves resource.This is a kind of passive snow melt mode, and the effect of snow melt is not so good.
6, conduction paving ice-melt snow technology
In the paving material, mix polymer class, carbon class or metal species conduction admixture, make the paving material of high-insulativity possess heat and electric perception and transfer capability, change electric energy into heat energy, heat energy is by the upwards conduction of contact surface of paving material and ice and snow, temperature raise gradually after ice and snow absorbed heat, realized the purpose of snow melt (ice), and this method power consumption is bigger, the research of road surface insulation materials and application are not finished yet, and its research and extension is worth further inquiring into and distillation.
7, energy transformant ice-melt snow technology
Energy transformant ice-melt snow technology is by the energy converting apparatus, and other forms of energy is converted into heat energy, reaches the purpose of snow melt (ice).
Utilizable energy mainly contains multiple energy such as industrial electric energy, solar energy and underground heat.This technology can improve energy utilization rate, and clean environment firendly, is suitable for the needs of ice-melt snow in the local highway sections such as Large Longitudinal Slope of airport, bridge floor and speedway.Common have heating cable method, infrared heat reservoir method, savings geothermal source heat pipe melt method, solar heat pipe method etc., owing to be subjected to the restriction of energy source, utilize the ice-melt snow technology of soil source heat pipe and solar energy fulgurite just progressively to become the research focus.
Soil source hot pipe ice-melting snow technology is (bridge) face embedded set heat pipe on the road, utilize the soil source heat pipe, through the Lowlevel thermal energy of ground heat exchanger from underground extraction hometown earth, after heat pipe promotes, arrive the interior comb the inside of road (bridge) face by the higher FLUID TRANSPORTATION of pump handle temperature.When high-temperature hot fluid flows, heat by the heat convection mode, is imported into road (bridge) face in comb.When the temperature of road (bridge) face reached more than 0 ℃, its lip-deep ice and snow will melt, thereby reached the purpose of snow melt (ice).And solar energy-electric energy deicing or snow melting pavement technique, be to utilize the storage of solar energy converting system to the fulgurite heating that is embedded in the road surface, in the time that does not influence traffic safety of regulation, the ice and snow that the road surface is saved bit by bit melts rapidly, thereby reaches the purpose of road surface deicing snow.
Existing snow melt technology mainly contains by the blowing snow of power shovel snow, and methods such as Snow Agent have environmental disruption and snow melt hysteresis quality.Adopt industrial electric energy and earth source heat pump snow melt in addition in addition, its cost is higher.
The utility model content
In order to solve the problem that above-mentioned prior art exists, the utility model provides a kind of solar energy optical-thermal snow melt pavement device, and this device is a heat energy with conversion of solar energy directly, effectively melting road surface accumulated snow.
Solar energy optical-thermal snow melt pavement device, its technical scheme is: described device mainly is made up of solar thermal collection system, road surface cooling system and control system.Described solar thermal collection system comprises heat collector and hot water storage tank, and described road surface cooling system comprises heat pipe, and described control system comprises controller and temperature pick up.Heat collector one end is connected with hot water storage tank by the heat collector feed pipe, there is temperature pick up to be connected on the described heat collector feed pipe with controller, the heat collector other end is connected with the bottom of hot water storage tank by the heat collector return pipe, on the described heat collector return pipe flap valve, circulation pump and temperature pick up are arranged, circulation pump, temperature pick up are connected with controller; Described hot water storage tank is connected with an end of heat pipe by the heat pipe feed pipe, on the described heat pipe feed pipe flap valve, circulation pump and temperature pick up are arranged, circulation pump, temperature pick up are connected with controller, described hot water storage tank is connected with the other end of heat pipe by the heat pipe return pipe, on the described heat pipe return pipe temperature pick up is arranged.
On the described hot water storage tank temperature pick up is arranged.
Outlet valve is arranged at the top of described hot water storage tank.
Described hot water storage tank has auxiliary heating power supply.
The operating principle of solar energy optical-thermal snow melt pavement device is: solar thermal collection system is converted into heat energy (heating liquid or hot air exhausted) with solar energy, the road surface cooling system imports the heat energy circulation into heat pipe, heat pipe heats road slab and realizes effective snow melt, and control system is the thermal-arrest and the heat radiation process of control snow-melting system.
With the aqueous medium is example, and solar energy collector heats water in the heat collector by solar energy, and hot water enters hot water storage tank by the heat collector feed pipe and stores.When hot water storage during to a constant volume, start circulation pump by controller, to the heat pipe hot-water supply, right pipe promptly heats the road surface and realizes snow melt the hot water of hot water storage tank from the heat pipe feed pipe, and used water returns hot water storage tank by the heat pipe return pipe to be continued to be heated.When the water temperature in the hot water storage tank is reduced to uniform temperature, start circulation pump by controller, water in the hot water storage tank turns back to from the heat collector return pipe and continues in the heat collector to be heated, and realizes the circulation of water like this, guarantees that the storage water of hot water storage tank inside is stabilized in uniform temperature.The heating on road surface needs the hot water in the heat pipe to guarantee in certain temperature range, but when the storage water in the hot water storage tank still can't reach the hot water of described temperature range, starts the storage water heating that auxiliary heating power supply is given hot water storage tank.
The purpose that flap valve is set at heat collector return pipe and heat pipe feed pipe is the adverse current for anti-sealing.The purpose that outlet valve is set at the top of hot water storage tank is to be beneficial to exhaust when hot water storage tank gathers too many steam.The purpose that temperature pick up is set at heat collector feed pipe and heat collector return pipe is in order to monitor the variations in temperature of heat collector and hot water storage tank, guarantees with the water temperature control of hot water storage tank within the specific limits.The purpose that temperature pick up is set on heat pipe feed pipe and heat pipe return pipe is in order to monitor the variations in temperature of heat pipe and hot water storage tank, start auxiliary heating power supply by the temperature pick up that is arranged on the hot water storage tank again, guarantee that hot water storage tank reaches necessary requirement to the supply water temperature of heat pipe.
Description of drawings
Fig. 1 solar energy optical-thermal snow melt pavement device system drawing.
Among the figure, 1 is heat collector, and 2 is the heat collector feed pipe, and 3 is hot water storage tank, 4 is the heat collector return pipe, and 5 is circulation pump, and 6 is flap valve, and 7 is temperature pick up, 8 is temperature pick up, and 9 is outlet valve, and 10 are auxiliary heating power supply, and 11 is temperature pick up, 12 is circulation pump, and 13 is flap valve, and 14 is temperature pick up, 15 is temperature pick up, and 16 is the heat pipe feed pipe, and 17 is the heat pipe return pipe, 18 is heat pipe, and 19 is the road surface, and 20 is controller.
The specific embodiment
As shown in Figure 1, solar energy optical-thermal snow melt pavement device, described device mainly are made up of solar thermal collection system, road surface cooling system and control system.Described solar thermal collection system comprises heat collector 1 and hot water storage tank 3, and described road surface cooling system comprises heat pipe 18, and described control system comprises controller 20 and temperature pick up.Heat collector 1 one ends are connected with hot water storage tank 3 by heat collector feed pipe 2, there is temperature pick up 7 to be connected on the described heat collector feed pipe 2 with controller 20, heat collector 1 other end is connected with the bottom of hot water storage tank 3 by heat collector return pipe 4, flap valve 6, circulation pump 5 and temperature pick up 8 are arranged on the described heat collector return pipe 4, and circulation pump 5, temperature pick up 8 are connected with controller 20; Described hot water storage tank 3 is connected with an end of heat pipe 18 by heat pipe feed pipe 16, flap valve 13, circulation pump 12 and temperature pick up 14 are arranged on the described heat pipe feed pipe 16, circulation pump 12, temperature pick up 14 are connected with controller 20, described hot water storage tank 3 is connected with the other end of heat pipe 18 by heat pipe return pipe 17, on the described heat pipe return pipe 17 temperature pick up 15 is arranged.
On the described hot water storage tank 3 temperature pick up 11 is arranged, outlet valve 9 is arranged at the top of hot water storage tank 3, and hot water storage tank 3 has auxiliary heating power supply 10.
Heat collector commonly used has flat plate collector, glass vacuum pipe heat collector, heat pipe vacuum tube hot collector.Flat plate collector is simple in structure, fixed installation, can gather that the thermal efficiency was higher when the temperature difference was little between beam radia and diffusive radiation, heat collector and environment, cost is lower, but its antifreeze freezing tolerance is poor, is not suitable for using at cold district.Glass vacuum pipe heat collector has advantages such as good heat insulating, thermal efficiency height and anti-hail, but also exists shortcomings such as operation is dangerous, sealing is unreliable, fouling, non-pressure-bearing, heat collector life-span weak point.Heat pipe vacuum tube hot collector has the following advantages: heat-pipe working medium heat capacity is little, starts fast; There is not water in the vacuum heat collection pipe, anti-freezing; There is not water in the vacuum heat collection pipe, heat shock resistance; Heat pipe and connecting pipe are metals, and bearing capacity is strong; Heat pipe has " thermal diode effect ", good heat insulation; " dryness connection " is water-tight, safe and reliable to operation; Vacuum heat collection pipe " dryness connection " is easy to installation and maintenance, but the cost height, temperature difference hour between heat collector and environment, and its thermal efficiency is low.Take all factors into consideration from technical and economic performance, flat plate collector is applicable to the South China, and promptly winter temperature is higher than 0 ℃ area, and glass vacuum pipe heat collector is fit to North China and the Northeast, part northwest, be that winter minimum temperature is higher than-15 ℃ area, the suitable extremely frigid zones of heat-pipe vacuum-tube is used.
Heat collector can connect into the heat collector group by modes such as parallel connection, series connection and connection in series-parallel mixing.Under the prerequisite that guarantees journeys such as pipeline, series connection as much as possible, few in parallel.Its unit in parallel be difficult for to surpass six groups, and is in parallel too many, should cause circular flow unbalanced, and valve regulated is can not dependable flow even, can cause system thermal efficiency to descend like this.
The heat collector heat transfer medium should be determined according to regional temperature condition.Such as, the extreme lowest temperature in winter is in the area below-16.5 ℃, easily cause freezing of heat collector side heat transfer medium, cause the cold damage of heat collector, adding antifreezing agent (for example ethylene glycol) in heat transfer medium is to solve the effective ways that heat transfer medium freezes, adopt closed circulation, consider the leakage loss of heat transfer medium, heat transfer medium supply case need be set.
What the road surface cooling system adopted when laboratory test is hot water circulation system, and common pipe laying form has three kinds: spirality, Reciprocatory and type in upright arrangement.Heat pipe is laid in the way of concrete foundations, considers the complexity of processing technology, and heating power road snow-melting system is generally chosen type pipe laying mode in upright arrangement at present.
Because the influence of rule sexual factors such as intensity of solar radiation both had been subjected to round the clock, season and geographical position is subjected to the restriction of enchancement factors such as Changes in weather again, therefore, it is particularly important that the solar heat-preservation technology seems.In various heat storage technologies, the principle of sensible heat accumulation of heat is the simplest, technology is the most ripe, cost is minimum.The sensible heat accumulation of heat comprises accumulation of heat of liquid sensible heat and the accumulation of heat of solid sensible heat, adopts liquid to carry out the sensible heat accumulation of heat, is a kind of that technology is the most ripe in the various sensible heat heat storage types, application is the most general, because of the road surface heating system adopts the liquid circulation, so adopt liquid sensible heat heat accumulation.
The hot water storage tank of solar water heating system is generally the normal pressure water tank, has enough strength and stiffness.Hot water storage tank is made by cold-rolled steel sheet, can prolong its application life.The size of general hot water storage tank is relevant with collector area and heat-collecting temperature, general 1m
2The volume of the corresponding hot water storage tank of heat collector is 50～100L.Hot water storage tank adopts the polyurethane rigid foam plastic insulation layer outward.
The position of heat collector and the hot water storage tank relation and the resistance of ducting adopt the forced circulation mode, and the hot water storage tank accumulation of heat is whether by the operation decision of heat collector side circulation pump.Consider intermittence and unreliability that solar energy utilizes, should not adopt the start and stop of manual control circulation pump, therefore, adopt controller to control the start and stop of heat collector side circulation pump automatically.
Because the unstability of solar energy must have an auxiliary heating power supply in the solar energy optical-thermal system, when solar irradiation is not enough, can open three way cock, utilizes the auxiliary thermal source heating.The selection of auxiliary thermal source has multiple mode, can adopt Electric heating, also can adopt earth source heat pump.
The control principle of system is as follows: the difference of the water temperature in heat collector temperature and the water tank is during greater than 6 ℃, and circulation pump 5 starts, and with hot water in the heat collector and water tank interchange of heat, both temperature difference are during less than 3 ℃, and circulation pump 5 stops automatically.Start auxiliary thermal source when temperature is less than 40 ℃ of requirement temperature in the water tank, stop automatically when temperature is heated to 45 ℃.
Because system only moves when snow melt, circulation of fluid is selected ethylene glycol antifreeze for use, so system does not need antifreeze circulation, if circulation of fluid adopts water, then needs antifreeze circulation, and running cost is increased.
Claims (4)
1. solar energy optical-thermal snow melt pavement device, it is characterized in that: described device mainly is made up of solar thermal collection system, road surface cooling system and control system; Described solar thermal collection system comprises heat collector (1) and hot water storage tank (3), and described road surface cooling system comprises heat pipe (18), and described control system comprises controller (20) and temperature pick up; Heat collector (1) one end is connected with hot water storage tank (3) by heat collector feed pipe (2), there is temperature pick up (7) to be connected on the described heat collector feed pipe (2) with controller (20), heat collector (1) other end is connected with the bottom of hot water storage tank (3) by heat collector return pipe (4), flap valve (6), circulation pump (5) and temperature pick up (8) are arranged on the described heat collector return pipe (4), and circulation pump (5), temperature pick up (8) are connected with controller (20); Described hot water storage tank (3) is connected with an end of heat pipe (18) by heat pipe feed pipe (16), flap valve (13), circulation pump (12) and temperature pick up (14) are arranged on the described heat pipe feed pipe (16), circulation pump (12), temperature pick up (14) are connected with controller (20), described hot water storage tank (3) is connected with the other end of heat pipe (18) by heat pipe return pipe (17), and temperature pick up (15) is arranged on the described heat pipe return pipe (17).
2. solar energy optical-thermal snow melt pavement device according to claim 1 is characterized in that: temperature pick up (11) is arranged on the described hot water storage tank (3).
3. solar energy optical-thermal snow melt pavement device according to claim 1 is characterized in that: outlet valve (9) is arranged at the top of described hot water storage tank (3).
4. solar energy optical-thermal snow melt pavement device according to claim 1 is characterized in that: described hot water storage tank (3) has auxiliary heating power supply (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206236405U CN202081358U (en) | 2010-11-24 | 2010-11-24 | Solar photo-thermal snow melting road surface device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206236405U CN202081358U (en) | 2010-11-24 | 2010-11-24 | Solar photo-thermal snow melting road surface device |
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| CN202081358U true CN202081358U (en) | 2011-12-21 |
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| CN2010206236405U Expired - Fee Related CN202081358U (en) | 2010-11-24 | 2010-11-24 | Solar photo-thermal snow melting road surface device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061654A (en) * | 2010-11-24 | 2011-05-18 | 西安中交公路岩土工程有限责任公司 | Solar energy photo-thermal snowmelt pavement integrating system |
| CN103382697A (en) * | 2012-05-05 | 2013-11-06 | 常熟南师大发展研究院有限公司 | Floor-heating type heating antiskid bridge |
| CN104032645A (en) * | 2014-06-25 | 2014-09-10 | 杭州宇航交通工程有限公司 | Anti-freezing and thawing system for thermal cycle bridge deck |
| CN107829342A (en) * | 2017-10-27 | 2018-03-23 | 江苏湖滨园林建设有限公司 | A kind of ecological garden road and its rapid construction engineering method |
| CN109778634A (en) * | 2019-03-04 | 2019-05-21 | 重庆大学 | A kind of heat pipe snow removing deicing device based on solar thermal utilization |
-
2010
- 2010-11-24 CN CN2010206236405U patent/CN202081358U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061654A (en) * | 2010-11-24 | 2011-05-18 | 西安中交公路岩土工程有限责任公司 | Solar energy photo-thermal snowmelt pavement integrating system |
| CN103382697A (en) * | 2012-05-05 | 2013-11-06 | 常熟南师大发展研究院有限公司 | Floor-heating type heating antiskid bridge |
| CN104032645A (en) * | 2014-06-25 | 2014-09-10 | 杭州宇航交通工程有限公司 | Anti-freezing and thawing system for thermal cycle bridge deck |
| CN107829342A (en) * | 2017-10-27 | 2018-03-23 | 江苏湖滨园林建设有限公司 | A kind of ecological garden road and its rapid construction engineering method |
| CN109778634A (en) * | 2019-03-04 | 2019-05-21 | 重庆大学 | A kind of heat pipe snow removing deicing device based on solar thermal utilization |
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