A self-heating road and bridge snow melting and ice thawing device

Abstract

The present invention discloses a self-heating road bridge snow melting and ice thawing device, which includes a heating pack module, a snow melting and ice thawing pipeline module, a water storage tank module and a water collection tank module; the heating pack module includes a number of self-heating packs, and each self-heating pack is provided with self-heating materials that react with water; the snow melting and ice thawing pipeline module is connected to each self-heating pack through a heat pipeline; the water storage tank module is used to store the initial water for starting the self-heating packs; the water collection tank module is used to collect the water generated after the snow and ice on the road surface are melted, and return these waters to the heating pack module through a pipeline to achieve recycling. The present invention starts the self-heating packs through the water storage tank module, generates steam and hot air and sends them to the road surface through the pipeline for snow melting and ice thawing. The water generated by snow melting and ice thawing is collected and recycled through the water collection tank module, so that the present invention can achieve snow melting and ice thawing on the road surface without a high-power heating power supply, is safe and efficient, has low cost, is easy to control, and has strong practicability.

Description

Technical Field

[0001] The present invention belongs to the field of safe operation of road and bridge, and relates to a road and bridge snow melting and ice thawing technology, in particular to a self-heating road and bridge snow melting and ice thawing device. Background Art

[0002] Most areas in China are in snowfall areas. Especially in the early winter and early spring seasons, the problem of ice and snow accumulation on the bridge deck is very common. Due to the changes in temperature and vehicle load, thin ice layers are likely to form on the road and bridge surface. When the road surface freezes, the adhesion coefficient drops rapidly, the bonding force decreases significantly, and the braking stability of the vehicle decreases significantly, often resulting in vehicle braking failure, loss of direction control, and even skidding. At the same time, the braking distance is significantly extended, leading to frequent traffic accidents.

[0003] Currently, the widely used snow and ice melting technologies are the deicer method and the mechanical deicing method. The deicer method is a commonly used ice melting method in most countries. However, it has negative impacts on the surrounding environment, existing buildings, and green vegetation. The main component of the commonly used deicer is chloride, and the chloride solution formed after snow melting is highly corrosive to the road surface structure (steel bars, concrete, asphalt, etc.), seriously affecting the durability and safety of road and bridge structures. Mechanical deicing is a method to eliminate the hazards of ice and snow crisis through the direct action of ice and snow machinery. However, in the specific construction process, it is usually restricted by road conditions, thin snow layers, temperature and other conditions. It is extremely difficult to remove snow and ice on different roads with machines. At the same time, traditional mechanical snow removal will affect traffic and damage the road surface, and the maintenance cost is high in the later stage. In addition, the electric heating method for snow and ice melting technology currently under research and promotion is still in the R & D stage. Compared with the mechanical snow and ice removal methods, although the electric heating snow and ice removal technology is an efficient road surface snow removal method, it has a high cost. Once the snow melting system fails, it is inconvenient to repair. In addition, for existing roads and bridges, closed construction is required, which affects traffic. Summary of the Invention

[0004] The purpose of the present invention is to provide a self-heating road and bridge snow melting and ice thawing device, a road and bridge snow melting and ice removal device and a construction method that do not require a high-power external power supply, are simple in construction, and are convenient for maintenance and repair, so as to solve the deficiencies in the prior art such as corrosion, inconvenient installation and repair, and high cost.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A self-heating road and bridge snow melting and ice thawing device, comprising

[0007] a heating pack module, including a plurality of self-heating packs, and each self-heating pack is provided with a self-heating material that reacts with water;

[0008] The snow melting and ice thawing pipeline module is connected to each self-heating package through a heat pipeline, and the heat generated in the self-heating package is introduced into the road surface to melt snow and ice.

[0009] The water storage tank module is used to store the initial water for starting the self-heating package.

[0010] The water collection tank module is used to collect the water generated after the snow and ice on the road surface melt, and return this water to the heating package module through a pipeline to achieve recycling.

[0011] When the ground temperature reaches the freezing point, the water in the water storage tank module is injected into the self-heating package to react and form steam and hot air. The steam reaches the road surface layer through the heat pipeline, exchanges heat with the surrounding environment, causes the road surface temperature to rise, melts the ice and snow. The melted water is collected by the water collection tank module above the device to collect the water generated after snow melting and ice thawing, and the recycled water is used to replenish the water source required for the reaction of the heating package in the device. When the road surface temperature rises above the freezing point, the heating device stops working, achieving the purpose of snow melting and ice removal.

[0012] Compared with the prior art, the present invention has the following advantages and effects: Chemical reaction between water supply and heating materials is used to supply heat, which does not require long-term direct current power supply, only needs to control the power supply, and a battery can be used to maintain long-term operation; it is not restricted by inconvenient power supply in remote areas. Compared with traditional mechanical de-icing devices, it does not require a large amount of manpower and machinery, does not affect road traffic, and has less impact on the road surface structure; compared with the electrothermal method, it is convenient for installation and maintenance, does not require long-term power supply, has good practical popularization, good economic benefits, and strong adaptability. Brief Description of the Drawings

[0013] Figure 1 It is the overall structure diagram of the self-heating road bridge snow melting and ice thawing device of the present invention.

[0014] Figure 2 It is the schematic diagram of the snow melting and ice thawing pipeline module of the present invention.

[0015] Figure 3 It is the schematic diagram of the structure of a single self-heating package of the present invention.

[0016] Figure 4 It is the schematic diagram of the structure of the water collection tank module of the present invention.

[0017] Figure 5 It is the schematic diagram of the structure of the water storage tank module of the present invention.

[0018] Figure 6 It is the schematic diagram of the operating state of the second self-heating package.

[0019] Figure 7 It is the schematic diagram of the installation and distribution of the self-heating road bridge snow melting and ice thawing device of the present invention on the road.

[0020] 1-Self-heating road bridge snow melting and ice melting device, 2-road surface, 100-modular box structure, 110-cover plate, 120-heating box body, 200-heating pack module, 210-self-heating pack, 211-water storage container, 212-heating pack, 213-self-heating material, 214-water inlet, 215-heat outlet, 216-float control valve, 220-control water tank, 221-top inlet, 222-level gauge, 230-control valve; 300-snow melting and ice melting pipeline module, 310-heat exchange pipeline, 311-heat exchange main pipe, 312-heat exchange branch pipe, 320-heat collection pipeline, 400-water storage tank module, 410-water storage tank, 420-water supply control valve, 500-water collection tank module, 510-water collection pipe, 511-water collection main pipe, 512-water collection branch pipe, 513-water outlet pipe, 520-water collection tank, 521-water storage area, 522-first-stage grit chamber, 523-second-stage grit chamber, 524-large mesh filter, 525-medium mesh filter, 526-small mesh filter, 527-baffle, 528-make-up water valve, 529-circulating water valve, 530-water collection inclined plate, 600-control module, 700-monitoring module. Detailed implementation mode

[0021] The present invention will be further described below in conjunction with the accompanying drawings. The following is only an example of the technical solution of the present invention and does not represent the scope of all technical solutions of the present invention. In addition, for the nouns used in the embodiments, if there are clear definitions, they shall prevail; if there are no clear definitions, the general interpretations in the industry shall prevail. For the structures or steps not mentioned in the following embodiments, they are all existing and mature technologies.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] As Figure 1 and Figure 2 shown, the present invention provides a self-heating road bridge snow melting and ice melting device, including

[0025] a heating pack module 200, including a plurality of self-heating packs 210, and a self-heating material 213 that reacts with water is provided in each self-heating pack 210;

[0026] a snow melting and ice melting pipeline module 300, which is connected to each self-heating pack 210 through a heat pipeline, and conducts the heat generated in the self-heating pack 210 to the road surface 2 for snow melting and ice melting;

[0027] a water storage tank module 400, which is used to store and provide the initial water for starting the self-heating pack 210;

[0028] a water collection tank module 500, which is used to collect the water generated after the snow melting and ice melting of the road surface 2, and return this water to the heating pack module 200 through a pipeline to achieve recycling.

[0029] The present invention provides the initial starting water through the water storage tank module 400. When it is judged that snow melting and ice melting are needed through manual or other means, the water storage tank module 400 is started, and the initial starting water is injected into the heating pack module 200. After the water enters the heating pack module 200, it reacts chemically with the self-heating material 213 in the self-heating pack 210, generating a large amount of heat. The large amount of heat heats the air, and the hot air rises and enters the snow melting and ice melting pipeline module 300 through the heat pipeline for snow melting and ice melting. Of course, a large amount of heat can also generate water vapor at the same time. The water vapor and the hot air carry heat and rise together, and transport the heat to the snow melting and ice melting pipeline module 300 for snow melting and ice melting.

[0030] It should be noted that the specific type of the self-heating material 213 in the self-heating pack 210 is not limited and can be strong acids, strong alkalis, oxides of active metals, anhydrous salts, etc. Strong acids are generally concentrated sulfuric acid, perchloric acid, etc.; strong alkalis are generally sodium hydroxide, potassium hydroxide, etc. Oxides of active metals are generally calcium oxide, barium oxide, lithium oxide, etc. Anhydrous salts are generally anhydrous lithium chloride, anhydrous zinc chloride, etc. Of course, considering safety, cost, and operation and maintainability, strong acids and strong alkalis are generally not selected. The self-heating pack 210 can generally be set as a water storage container 211, and measures such as a liquid level gauge can be set for the water storage container 211 to monitor the liquid level. The self-heating material 213 can be placed in the water storage container 211 after being encapsulated by a water-permeable material. Encapsulation can improve the replacement speed after the self-heating material 213 is used up; the water-permeable material can be such as gauze, water-permeable plastic film, etc. The water-permeable speed of the water-permeable material is selected according to the severity of the reaction between the self-heating material 213 and water. For example, if the reaction is mild, highly water-permeable materials such as gauze or mesh can be selected, and when water enters the self-heating pack 210, it can quickly come into full contact with the self-heating material 213 and react to release heat; when the reaction between the self-heating material 213 and water is very intense, materials with a low water-permeable rate such as water-permeable plastic film can be selected to control the intensity of heat release by controlling the contact speed between water and the self-heating material 213, preventing overheating in the self-heating pack 210 in a short time and thus causing potential safety hazards.

[0031] When the self-heating material 213 in the self-heating pack 210 is used up, all the self-heating packs 210 can be replaced as a whole, or the self-heating packs 210 can be replaced one by one, which is specifically selected according to actual needs. The replaced self-heating packs 210 are generally sent to the factory for centralized replacement of the self-heating material 213, which has lower cost and better safety compared with replacing the self-heating material 213 on site; of course, in some special cases, the self-heating material 213 in the self-heating pack 210 can also be replaced on site. At this time, the self-heating pack 210 needs to be designed as a container structure that is convenient to open on site, which is specifically the prior art and will not be elaborated in this invention.

[0032] To reduce the construction cost and improve the project feasibility, such as Figure 1As shown in the figure, the self-heating road bridge snow melting and ice melting device 1 of the present invention is modularly designed and encapsulated in the modular box structure 100. During use, only a corresponding space needs to be reserved or excavated on the road surface 2, and the modular box structure 100 can be integrally installed therein. The modular box structure 100 of the present invention includes a cover plate 110 flush with the road surface 2 and a heating box body 120 buried underground and connected to the cover plate 110. The cover plate 110 can be made of a steel structure or a concrete casting structure, and the heating box body 120 can be made of a steel structure or engineering plastic; the snow melting and ice melting pipeline module 300 is buried in the cover plate 110 and is used for melting the ice and snow on the cover plate 110; the heating pack module 200, the water storage tank module 400, and the water collection tank module 500 are all arranged in the heating box body 120. Generally speaking, the area covered by the positive projection of the cover plate 110 on the road surface 2 is larger than that of the heating box body 120. The snow melting and ice melting pipeline module 300 mainly melts the ice and snow on the cover plate 110. Of course, the snow melting and ice melting pipeline module 300 can also be extended to the road surface 2 around the cover plate 110. At this time, corresponding heat exchange pipelines need to be pre-buried in the road surface 2, and the specific details of the present invention will not be elaborated here.

[0033] As Figure 1 , 2 , as shown in Figure 3, in some embodiments, the heating pack module 200 further includes a control water tank 220. The top inlet 221 of the control water tank 220 is connected to the water storage tank module 400. A number of self-heating packs 210 are stacked from bottom to top at the bottom of the heating box body 120; the control water tank 220 is arranged on the side of a number of stacked self-heating packs 210 ( Figure 2 the right side in the figure). The water inlet 214 of each self-heating pack 210 is connected to the water outlet at the corresponding height arranged on the control water tank 220 through a control valve 230; a heat outlet 215 is provided at the top of each self-heating pack 210 on the side far from the water inlet 214. The heat outlets 215 of all self-heating packs 210 are collected and connected to the snow melting and ice melting pipeline module 300 through a heat collection pipeline 320; the water in the heating box body 120 enters the self-heating pack 210 under the control of the control valve 230 and reacts with the self-heating material 213 to generate hot air or steam. The hot air or steam enters the heat collection pipeline 320 through the heat outlet 215, is collected by the heat collection pipeline 320, and then sent to the snow melting and ice melting pipeline module 300.

[0034] As Figure 3 shown, the self-heating pack 210 includes a water storage container 211 and a heating pack 212 arranged in the water storage container 211. The heating pack 212 itself is made of a water-permeable material, and the heating pack 212 is filled with a material that generates heat when encountering water. A water inlet 214 is provided on the right side of the water storage container 211, and a heat outlet 215 is provided on the left side. The water storage container 211 itself can be made of a steel material or engineering plastic.

[0035] It should be noted that the control water tank 220 generally does not need to be too large in size, but its height should generally cover all the stacked self-heating packages 210; during use, the starting water that enters the control water tank 220 through the water storage tank module 400 first enters the bottommost self-heating package 210 through the control valve 230. When the self-heating material 213 in the bottommost self-heating package 210 has reacted and can no longer generate heat, the corresponding control valve 230 is closed, and the control valve 230 between the upper-level self-heating package 210 and the control water tank 220 is opened to put the second self-heating package 210 into use; therefore, it is necessary to ensure that the height of the control water tank 220 covers all the self-heating packages 210; because the bottommost self-heating package 210 is started first, only a small amount of water is needed to start. As the snow melting and ice thawing progress, a lot of water can flow back through the water collection tank module 500, so there is no need to worry about the water source problem during subsequent snow melting and ice thawing, and basically there is no need for the water storage tank module 400 to replenish water again.

[0036] It should be noted that the number of self-heating packages 210 stacked in each heating box body 120 is not limited and can be selected according to actual situations. Considering complexity, 1 - 10 are all acceptable, and 4 self-heating packages 210 are adopted in this embodiment.

[0037] As Figure 3 shown, in some embodiments, a float control valve 216 is provided at each heat outlet 215 of each self-heating package 210. When the liquid level in the self-heating package 210 is higher than the heat outlet 215, the float control valve 216 automatically closes the heat outlet 215. The float control valve 216 is a safety measure that can prevent the water in the self-heating package 210 from entering the heat collection pipeline 320; under normal circumstances, when the water level in the self-heating package 210 rises to almost the same position as the heat outlet 215, it also indicates that the self-heating material 213 in this self-heating package 210 has failed. At this time, the control valve 230 between the corresponding self-heating package 210 and the control water tank 220 can be closed; however, to prevent inaccurate timing judgment or error in judgment, a float valve is set at the heat outlet 215 to ensure safety and prevent water from entering the heat collection pipeline 320, causing blockage of the heat collection pipeline 320.

[0038] As Figure 1 、 2 shown, in some embodiments, the snow melting and ice thawing pipeline module 300 includes a heat exchange pipeline 310 buried in the cover plate 110. The heat exchange pipeline 310 includes a heat exchange main pipe 311 and a number of heat exchange branch pipes 312 connected to the main pipe. The heat exchange main pipe 311 is connected to the heat collection pipeline 320, receives the heat carried by hot air or steam, and disperses it through the heat exchange branch pipes 312 to melt the ice and snow above the cover plate 110.

[0039] It should be noted that the end of the heat exchange branch pipe 312 can be open. Of course, in order to avoid rainwater from entering, the open mouth should face downward. It can also be closed or semi-closed. The hot air or water vapor carrying heat from the self-heating bag 210 encounters the lower temperature of the cover plate 110, and transfers the heat to the cover plate 110 through heat transfer to melt snow and ice. The hot air becomes cold air, and the water vapor condenses into water. The condensed water and cold air can be discharged from the end of the heat exchange branch pipe 312. A small amount of condensed water condenses in the heat collection pipe 320 and will flow back into the self-heating bag 210 along the heat collection pipe 320 (when the valve of the heat outlet 215 is not closed). On the other hand, due to the water collection function of the water collecting tank module 500, the water in the control water tank 220 continuously enters the self-heating bag 210, so that no negative pressure is generated in the self-heating bag 210.

[0040] Generally, the deicing area of ​​the deicing pipeline module 300 is only the area of ​​the cover plate 110. Figure 7 As shown, the present invention can be arranged in a local icing-prone area on the road to perform local deicing, or can be scattered on the road surface 2 to perform overall deicing of the road surface.

[0041] Of course, the snow-melting and ice-melting area of ​​the snow-melting and ice-melting pipeline module 300 can also be expanded. During the expansion, heat exchange pipes are pre-buried under the roadbed or the road surface 2, or only pre-set channels. When the self-heating road bridge snow-melting and ice-melting device 1 is installed, the end of the heat exchange branch pipe 312 is connected to the heat exchange pipe or aligned with the preset channel. Hot air or steam enters the pre-buried heat exchange pipe or the pre-prepared channel through the end of the heat exchange branch pipe 312 to melt snow and ice on the road around the cover plate 110, and the cold air and steam condensate can also be dissipated in the road layer, or can also be recycled through the water collecting tank module 500.

[0042] like Figure 1 , 4 As shown in Figure 5, in some embodiments, the water collecting tank module 500 includes a water collecting pipe 510 buried in the inner surface of the cover plate 110 and provided with a large number of small holes, and a water collecting tank 520 arranged in the heating box body 120 and located above the heating pack module 200. The water collecting pipe 510 is connected to the water collecting tank 520 or is connected to the water collecting tank 520 after being collected through a main pipe; the bottom outlet of the water collecting tank 520 is connected to the top inlet 221 of the control water tank 220 through a circulating water valve 529.

[0043] As a preferred embodiment, a plurality of water collecting tanks (not shown) can be arranged on the cover plate 110, and the water collecting tanks are covered with a grid plate or a ditch cover plate 110, and the water collecting pipe 510 is arranged in the water collecting tank, and a large number of plum blossom holes are opened around the water collecting pipe 510 for collecting water. In order to improve the water collecting efficiency, the water collecting pipe 510 is divided into a water collecting main pipe 511 and a plurality of water collecting branch pipes 512, and the water collecting branch pipes 512 distributed in the cover plate 110 are collected through the water collecting main pipe 511 and then sent to the water collecting box 520, and of course, there can be multiple water collecting main pipes 511.

[0044] Alternatively, another technical solution may be adopted, for example, the cover plate 110 itself is cast by permeable concrete, and the water collecting pipe 510 is directly pre-buried in the permeable concrete.

[0045] In order to improve the water collection efficiency, Figure 4 As shown, the water collecting main pipe 511 is provided with a plurality of water outlet pipes 513 extending into the water collecting tank 520 , so as to ensure that the water in the water collecting main pipe 511 enters the water collecting tank 520 in time.

[0046] like Figure 4 As shown, in some embodiments, the bottom of the water collecting tank 520 is divided into a water storage area 521 and a filter area by a partition, and a water collecting inclined plate 530 is arranged above the filter area, and the recovered water entering the water collecting tank 520 is collected into the water storage area 521 through the water collecting inclined plate 530; the filter area is divided into several levels of grit chambers connected in series by a partition vertically arranged at the bottom of the water collecting tank 520, and connecting ports are provided on adjacent grit chambers and on the partitions between the water storage area 521 and the adjacent grit chambers, and the last level of grit chamber is provided with a water collecting tank outlet connected to the outside of the water collecting tank 520, and the water collecting tank outlet is connected to the circulating water valve 529 through a return channel. In this embodiment, the grit chamber has two levels, a large-mesh filter 524 is provided on the first connecting port between the water storage area 521 and the first-stage grit chamber 522, a medium-mesh filter 525 is provided on the second connecting port between the first-stage grit chamber 522 and the second-stage grit chamber 523, and a small-mesh filter 526 is provided on the water outlet of the water collecting tank on the right side of the second-stage grit chamber 523. The multi-stage mesh filter design not only improves the filtration efficiency but also extends the service life of the filter.

[0047] As a preferred embodiment, Figure 4 As shown, the water storage area 521 and the bottom of the grit tank are provided with multiple levels of baffles 527 with increasing heights along the water flow recovery direction. The water storage area 521 or the grit tank is divided into multiple levels of sub-grit tanks along the water flow direction by the baffles 527. The water in the water storage area 521 needs to climb over the baffles 527 step by step to continue to flow, and the baffles 527 are used to maximize the grit settling effect.

[0048] like Figure 5As shown, in some embodiments, the water storage tank module 400 includes a water storage tank 401. The bottom outlet of the water storage tank 401 is connected to the top inlet 221 of the control water tank 220 through a water supply pipe, and a water supply control valve 420 is provided on the water supply pipe; the return channel of the water outlet of the collection water tank 520 is connected to the water storage tank 401 through a make-up water pipe, and a make-up water valve 528 is provided on the make-up water pipe. It should be noted that the height of the water storage tank 401 can be higher or lower than that of the collection water tank 520; when the height of the water storage tank 401 is higher than that of the collection water tank 520, a power pump should be provided on the water supply pipe to lift the water.

[0049] It can be foreseen that the water storage tank 401 should also be provided with a water inlet pipe for adding water in the initial stage to store the water required for starting the self-heating road bridge snow melting and ice melting device 1.

[0050] As Figure 1 、 2 As shown, in some embodiments, the self-heating road bridge snow melting and ice melting device 1 further includes a monitoring module 700 and a control module 600. The monitoring module 700 includes several temperature sensors provided on the cover plate 110 for monitoring whether the cover plate 110 or the road surface 2 is frozen or snow-covered. The control module 600 is connected to each control valve for judging whether to start the corresponding control valve for snow melting and ice melting according to the monitoring situation of the monitoring module 700. The control module 600 can be a PLC controller or an industrial control computer. The specific control valves are selected according to actual needs. For this embodiment, it includes a plurality of control valves 230 between the self-heating package 210 and the control water tank 220, the water supply control valve 420 for the water storage tank 401 to enter the control water tank 220 at the bottom, the circulating water valve 529 for the collection water tank 520 to return to the control water tank 220, and the make-up water valve 528 between the water storage tank 401 and the collection water tank 520; it should be noted that a liquid level gauge 222 can also be provided in the control water tank 220, and the liquid level gauge 222 is connected to the control module 600 through a signal line to be able to collect the water level of the control water tank 220 and control the opening degrees of each valve according to the water level situation to prevent the water level in the control box from being too high in the initial stage of startup.

[0051] During use, when constructing the road surface 2, a pit is reserved, and the self-heating road bridge snow melting and ice melting device 1 of the present invention can be installed therein, or the existing road areas prone to icing are transformed by excavating a pit and then installing the self-heating road bridge snow melting and ice melting device 1.

[0052] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should all be covered within the scope of the claims of the present invention.

Claims

1. A self-heating road and bridge snow melting and ice thawing device, characterized in that, it comprises a heating pack module, including a number of self-heating packs, and self-heating materials reactive with water are provided in each self-heating pack; a snow melting and ice thawing pipeline module, which is connected to each self-heating pack through a heat pipeline, and conducts the heat generated in the self-heating pack to the road surface for snow melting and ice thawing; a water storage tank module, used for storing the initial water for starting the self-heating packs; a water collection tank module, used for collecting the water generated after the snow and ice on the road surface melt, and returning this water to the heating pack module through a pipeline to achieve recycling; and a modular box structure, the modular box structure includes a cover plate flush with the road surface and a heating box body buried underground and connected to the cover plate; the snow melting and ice thawing pipeline module is buried in the cover plate, and the heating pack module, the water storage tank module and the water collection tank module are all arranged in the heating box body.

2. The self-heating road and bridge snow melting and ice thawing device according to claim 1, characterized in that: The heating pack module further includes a control water tank, the top inlet of the control water tank is connected to the water storage tank module, a number of self-heating packs are stacked from bottom to top in the heating box body, the control water tank is arranged on the side of the stacked self-heating packs, and the water inlet of each self-heating pack is connected to the water outlet at the corresponding height arranged on the control water tank through a control valve; a heat outlet is provided at the top of each self-heating pack on the side far from the water inlet, and the heat outlets of all self-heating packs are collected and communicated to the snow melting and ice thawing pipeline module through a heat collection pipeline; the water in the heating box body enters the self-heating pack under the control of the control valve, reacts with the self-heating material to generate hot air or steam, and the hot air or steam enters the heat collection pipeline through the heat outlet, and is collected by the heat collection pipeline and sent to the snow melting and ice thawing pipeline module.

3. The self-heating road and bridge snow melting and ice thawing device according to claim 2, characterized in that: A float control valve is provided at the heat outlet of each self-heating pack, and when the liquid level in the self-heating pack is higher than the heat outlet, the float control valve automatically closes the heat outlet.

4. The self-heating road and bridge snow melting and ice thawing device according to claim 2, characterized in that: The snow melting and ice thawing pipeline module includes a heat exchange pipeline buried in the cover plate, the heat exchange pipeline includes a heat exchange main pipe and a number of heat exchange branch pipes connected to the main pipe, the heat exchange main pipe is connected to the heat collection pipeline, receives the heat carried by the hot air or steam, and is dispersed through the heat exchange branch pipes to melt the ice and snow above the cover plate.

5. The self-heating road and bridge snow melting and ice thawing device according to claim 4, characterized in that: The water collection tank module includes a water collection pipe buried in the cover plate with a large number of small holes opened on the inner surface and a water collection tank arranged in the heating box body above the heating pack module, the water collection pipe is communicated with the water collection tank or is collected through a main pipe and then communicated with the water collection tank; the bottom outlet of the water collection tank is connected to the top inlet of the control water tank through a circulating water valve.

6. The self-heating road and bridge snow melting and ice thawing device according to claim 5, characterized in that: The bottom inside the water collecting tank is divided into a water storage area and a filter area by a partition board. A water collecting inclined plate is arranged above the filter area, and the recycled water entering the water collecting tank is collected into the water storage area through the water collecting inclined plate. The filter area is divided into several sedimentation tanks connected in series in sequence by a partition board vertically arranged at the bottom inside the water collecting tank. Communication ports are arranged on the partition boards between adjacent sedimentation tanks and between the water storage area and adjacent sedimentation tanks. The last-stage sedimentation tank is provided with a water collecting tank water outlet communicating to the outside of the water collecting tank, and the water collecting tank water outlet is connected to a circulating water valve through a return channel.

7. The self-heating road bridge snow melting and ice melting device according to claim 6, characterized in that: a filter screen is arranged on each communication port inside the water collecting tank, and along the water outflow direction, the aperture of the filter screen gradually decreases.

8. The self-heating road bridge snow melting and ice melting device according to claim 6, characterized in that: the water storage tank module includes a water storage tank. The bottom outlet of the water storage tank is communicated to the top inlet of the control tank through a water supply pipe, and a water supply control valve is arranged on the water supply pipe; the return channel of the water collecting tank water outlet is connected to the water storage tank through a make-up water pipe.

9. The self-heating road bridge snow melting and ice melting device according to claim 6, characterized in that: it further includes a monitoring module and a control module. The monitoring module is used to monitor whether the cover plate or the road surface is frozen or snow-covered. The control module is connected to each control valve and is used to judge whether to start the corresponding control valve for snow melting and ice melting according to the monitoring situation of the monitoring module.

Images