Train wagon heating and unfreezing device and method
By installing flue gas extraction, heat exchange, and return pipelines on train cars, the high-temperature flue gas from thermal power plants can be used to thaw train cars, solving the problem of high thaw costs and achieving energy conservation and emission reduction.
Patent Information
- Application Number
- CN202511108587.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-08
- Publication Date
- 2025-11-07
AI Technical Summary
Existing methods for defrosting train cars are costly and pose safety hazards, while electric heating methods consume huge amounts of energy and steam heating methods require large investments and have low thermal efficiency.
The high-temperature flue gas from the thermal power plant is introduced into the insulation room by a series of flue gas outlet pipes, heat exchange pipes and flue gas return pipes. The heat exchange pipes are used to heat and thaw the train cars, and the heat of the high-temperature flue gas is used for thawing. The temperature is controlled by electric regulating valves and return pumps.
This reduced the cost of thawing train cars, improved thermal efficiency, reduced energy consumption, and enabled energy conservation and emission reduction in thermal power plants.
Smart Images
Figure CN120907155A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of car un-freezing equipment, in particular to a train car heating and un-freezing device and method. BACKGROUND
[0002] In cold regions, coal in the train car is prone to freezing due to low temperature during transportation, and the coal unloading time is significantly prolonged. Currently, common train car heating and un-freezing methods mainly include electric heating method and steam heating method. The electric heating method is to lay an electric heating device on the train car, but the energy consumption is huge, the operation cost is high, and there are certain safety hazards, such as fire caused by electric heating device failure. The steam heating method is to use a steam pipeline to deliver steam to the train car for heating, which requires large equipment investment, and there is a large heat loss in the delivery process of the steam, and the thermal efficiency is low.
[0003] In order to solve the above problems, the present application provides a train car heating and un-freezing device and method to solve the technical problem of high cost of train car un-freezing in the prior art. SUMMARY
[0004] The present application provides a train car heating and un-freezing device and method to solve the technical problem of high cost of train car un-freezing in the prior art.
[0005] To achieve the above purpose, the technical solution adopted by the present application is:
[0006] The present application provides a train car heating and un-freezing device, which comprises a flue gas leading pipe, a heat exchange pipe and a flue gas return pipe connected in series, the inlet end of the flue gas leading pipe is communicated with the outlet of the induced draft fan of the thermal power plant, and the outlet end of the flue gas return pipe is communicated with the inlet of the induced draft fan of the thermal power plant.
[0007] It also comprises a heat preservation house, the heat preservation house is provided with a door, the internal space of the heat preservation house is used for parking a train car, the heat exchange pipe is arranged in the heat preservation house, and the flue gas leading pipe and the flue gas return pipe penetrate through the wall of the heat preservation house and are communicated with the heat exchange pipe; the high-temperature flue gas of the thermal power plant radiates heat to the heat preservation house through the heat exchange pipe, so that the internal temperature of the heat preservation house is raised.
[0008] Further, an electric regulating valve is arranged in the flue gas leading pipe and used for controlling the amount of high-temperature flue gas flowing through the flue gas leading pipe.
[0009] Further, the heat exchange pipe is arranged in close contact with the inner wall of the heat preservation house and in a serpentine shape.
[0010] Further, the heat exchange pipeline surface is coated with high radiation paint to enhance the heat radiation efficiency of the pipeline.
[0011] Further, the flue gas leading pipeline surface is further provided with a heat preservation layer to preserve the high temperature flue gas flowing through the flue gas leading pipeline.
[0012] Further, the flue gas leading pipeline and the flue gas filter device are arranged between the flue gas leading pipeline and the air intake inlet of the thermal power plant.
[0013] Further, the flue gas return pipeline is arranged with a return pump to provide flue gas return pressure.
[0014] Further, the outer surface of the wall of the heat preservation room is further arranged with a heat insulation layer to reduce the heat exchange efficiency between the heat preservation room and the external environment.
[0015] Further, the heat preservation room is further provided with a temperature sensor and a control system, the temperature sensor monitors the temperature in the heat preservation room in real time and feeds back the temperature data to the control system, and the control system controls the opening size of the electric regulating valve and the pump pressure of the return pump based on the temperature data.
[0016] The train car heating and thawing method further comprises the following steps: opening the heat preservation room door, pulling the train car to be thawed into the heat preservation room and closing the door, opening the electric regulating valve and the return pump through the control system, leading the high temperature flue gas of the thermal power plant into the heat exchange pipeline for heat radiation, indirectly controlling the temperature of the heat preservation room, thawing the train car by using the heat of the high temperature flue gas, and after the train car is thawed, closing the electric regulating valve and the return pump through the control system, and then opening the heat preservation room door to pull out the thawed train car.
[0017] Compared with the prior art, the technical scheme disclosed by the present application has the following beneficial effects:
[0018] Due to the above scheme, the heat of the high temperature flue gas of the thermal power plant can be transferred to the heat preservation room through the flue gas leading pipeline, the heat exchange pipeline and the flue gas return pipeline connected in sequence, so as to achieve the technical effect of controlling the temperature in the heat preservation room, and then the train car is parked in the heat preservation room, and the heat transferred by the high temperature flue gas is used for thawing operation, so as to solve the technical problem of high cost of thawing the train car, and it is also beneficial to energy saving and emission reduction of the thermal power plant. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below only show some of the embodiments of the present application, and other drawings can be obtained by those of ordinary skill in the art without any creative effort based on these drawings.
[0020] Figure 1 The figure is a structural schematic diagram of the train skin heating and thawing device in the embodiments of the present application.
[0021] In the figure, 1 is a flue gas leading pipe, 2 is a heat exchange pipe, 3 is a flue gas backflow pipe, 4 is an induced draft fan, 5 is a heat preservation room, 6 is a room door, 7 is an electric regulating valve, and 8 is a backflow pump. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort are within the scope of protection of the present application.
[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.
[0024] The present application provides a train skin heating and thawing device and method, which can solve the technical problem of high cost of thawing train skin and is also beneficial to energy saving and emission reduction of thermal power plants.
[0025] REFERENCE Figure 1 The present application discloses a train skin heating and thawing device, which comprises flue gas leading pipe 1, heat exchange pipe 2 and flue gas backflow pipe 3 connected in series, the inlet end of the flue gas leading pipe 1 is communicated with the outlet of the induced draft fan 4 of the thermal power plant, the outlet end of the flue gas backflow pipe 3 is communicated with the inlet of the induced draft fan 4 of the thermal power plant; the heat preservation room 5 is further included, the heat preservation room 5 is installed with the room door 6, the internal space of the heat preservation room 5 is used for parking train skin, the heat exchange pipe 2 is arranged in the heat preservation room 5, the flue gas leading pipe 1 and the flue gas backflow pipe 3 penetrate through the wall of the heat preservation room 5 and are communicated with the heat exchange pipe 2; the high-temperature flue gas of the thermal power plant radiates heat to the heat preservation room 5 through the heat exchange pipe 2, so as to heat the internal space of the heat preservation room 5.
[0026] The high-temperature flue gas of the thermal power plant is recovered by the flue gas recovery device, and the recovered heat is used for heating the heat preservation house 5. The heated heat preservation house 5 is used for thawing the train car, so that the thawing operation is performed by using the heat transferred by the high-temperature flue gas, thereby solving the technical problem that the thawing cost of the train car is too high, and simultaneously being beneficial to energy saving and emission reduction of the thermal power plant.
[0027] The induced draft fan 4 of the thermal power plant is installed at the end of the boiler tail flue. The high-temperature flue gas is sucked out of the boiler by the negative pressure generated by the rotation of the impeller, and is discharged to the chimney by overcoming the resistance of the flue. In the embodiment, the inlet end of the flue gas leading pipe 1 is communicated with the outlet of the induced draft fan 4 of the thermal power plant, so that the high-temperature flue gas with a certain pressure flows along the flue gas leading pipe 1, and enters the heat exchange pipe 2. During the flow of the high-temperature flue gas in the heat exchange pipe 2, the internal space of the heat preservation house 5 is subjected to the heat radiation, so as to increase the temperature of the heat preservation house 5. With the flow of the high-temperature flue gas, the high-temperature flue gas enters the flue gas return pipe 3. Because the outlet end of the flue gas return pipe 3 is communicated with the inlet of the induced draft fan 4 of the thermal power plant, the induced draft fan 4 generates the negative pressure at the outlet end of the flue gas return pipe 3, so as to provide the power for the flow of the flue gas in the flue gas return pipe 3, thereby forming the continuous flow of the gas in the flue gas leading pipe 1, the heat exchange pipe 2 and the flue gas return pipe 3 in sequence.
[0028] Meanwhile, the heat preservation house 5 is provided with the door and the traction device, and the floor of the heat preservation house 5 is provided with the train track communicated with the train track outside. After the door 6 is opened, the train car to be thawed can be pulled into the heat preservation house 5 by the traction device, so as to perform the thawing operation. After the thawing operation is completed, the door 6 is opened, and the traction head can run to the train track in the heat preservation house 5, so as to pull out the thawed train car.
[0029] The embodiment further comprises the electric regulating valve 7 arranged in the flue gas leading pipe 1, which is used for controlling the amount of the high-temperature flue gas flowing through the flue gas leading pipe 1. The electric regulating valve 7 is the electric gate valve, i.e. the electric gate valve. The valve plate of the electric gate valve is vertically inserted into the flue gas leading pipe 1 under the control of the electric push rod, so as to cut off the flue gas leading pipe 1. The length of the output end of the electric push rod is controlled, so as to adjust the flow diameter of the flue gas leading pipe 1, thereby indirectly adjusting the total amount of the high-temperature flue gas entering the heat exchange pipe 2. Because the amount of the high-temperature flue gas is controlled, the technical requirement of adjusting the temperature of the heat preservation house 5 is achieved.
[0030] The heat exchange pipeline 2 of the embodiment is arranged close to the inner wall of the heat preservation room 5 and is arranged in a serpentine shape; wherein the bending sections of the heat exchange pipeline 2 are connected by U-shaped elbow pipes, and other positions are connected by straight pipes; after the U-shaped elbow pipes and the straight pipes are connected in turn, welding is used for fixation, so that the technical effect of large-area heat exchange is realized in the limited space of the heat preservation room 5; as a further optimized scheme, the heat exchange pipeline 2 can be installed by using spring support hangers; because the flow direction of the gas changes at the elbow during the flow of the high-temperature gas, enhanced turbulent flow is formed, thereby causing local vibration effect of the heat exchange pipeline 2; therefore, the mode of fixation by using the spring support hangers can effectively buffer the pipeline vibration, thereby avoiding the pipeline damage caused by the vibration effect.
[0031] The surface of the heat exchange pipeline 2 of the embodiment is smeared with high-radiation paint, which is used for enhancing the heat radiation efficiency of the pipeline; in addition, heat dissipation fins can be arranged on the surface of the heat exchange pipeline 2 to increase the heat exchange area of the heat exchange pipeline.
[0032] The surface of the flue gas leading pipeline 1 of the embodiment is also provided with a heat preservation layer, which is used for heat preservation of the high-temperature flue gas flowing through the flue gas leading pipeline 1; the heat preservation layer uses rock wool as a base and stainless steel foil as a wrapping layer, so as to meet the use requirements of heat resistance, fire prevention and flame retardation.
[0033] The flue gas filtering device is arranged between the flue gas leading pipeline 1 and the inlet of the induced draft fan of the thermal power plant; the flue gas filtering device is used for filtering out particulate impurities in the high-temperature flue gas; wherein the electrostatic precipitator is generally selected as the filtering unit; the particulate is charged and then adsorbed by the polar plate by using the high-voltage electric field generated by the electrostatic precipitator, so as to reduce the particulate impurities in the high-temperature flue gas; because the content of the particulate impurities is reduced, the pipeline blockage can be significantly reduced, so as to improve the service life of the device.
[0034] The backflow pump 8 is arranged on the flue gas backflow pipeline 3 of the embodiment, which is used for providing backflow pressure of the flue gas; when the electrically operated gate valve of the electrically operated regulating valve 7 is fully opened, if the temperature in the heat preservation chamber 5 still cannot meet the requirement, the backflow pump 8 needs to be opened to provide additional power; the pump pressure of the backflow pump 8 can accelerate the flow rate of the gas flow in the pipeline, so as to drive more high-pressure gas into the heat exchange pipeline 2, thereby meeting the technical requirement of rapid heating.
[0035] The outer surface of the wall of the heat preservation room 5 of the embodiment is also provided with a heat insulation layer, which is used for reducing the heat exchange efficiency between the heat preservation room and the external environment; the heat insulation layer is arranged on the outer surface of the wall, so that the rock wool board can be used as the heat insulation material to meet the use standards of heat preservation and fire prevention.
[0036] The temperature sensor monitors the temperature in the heat preservation room 5 in real time, and feeds back the temperature data to the control system, and the control system controls the opening size of the electric regulating valve 7 and the pump pressure of the backflow pump 8 based on the temperature data; wherein the control system is installed to the wall outside the door 6 of the heat preservation room 5, and is configured with a display screen to display the internal temperature data of the heat preservation room 5 in real time; as a further optimized scheme, a camera is also installed in the heat preservation room 5 to visually display the indoor information on the display screen of the control system, so as to facilitate the monitoring operation of the staff outdoors.
[0037] The application further discloses a train car heating and thawing method.
[0038] First, open the heat preservation room door 6, pull the train car to be thawed into the heat preservation room 5 through the traction device installed indoors and close the door 6, open the electric regulating valve 7 and the backflow pump 8 through the control system, and guide the high-temperature flue gas of the thermal power plant into the heat exchange pipeline 2 for heat radiation, control the temperature of the heat preservation room 5, thaw the train car by using the heat of the high-temperature flue gas, and then open the door 6 of the heat preservation room 5 to pull out the thawed train car after the thawing operation is completed.
[0039] During the process of pulling the train car, the traction device needs to be used for operation when entering the heat preservation room 5, and during the process of pulling out the train car, the train head in the outside world needs to be used for traction, that is, after the thawing operation is completed, the door 6 is opened, the traction head runs to the rail in the heat preservation room 5 and then pulls out the thawed train car.
[0040] It should be noted that for those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, and any reference signs in the claims should not be regarded as limiting the claims involved.
Claims
1. A train car thawing apparatus, comprising: The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room.
2. The train car thawing apparatus of claim 1, wherein, The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room.
3. The train car thawing apparatus of claim 1, wherein, The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room.
4. The train car thawing apparatus of claim 1, wherein, The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room.
5. The train car thawing apparatus of claim 1, wherein, The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room.
6. The train car thawing apparatus of claim 1, wherein, The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room.
7. The railroad car thawing apparatus of claim 2, wherein, The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room.
8. The train car thawing apparatus of claim 1, wherein, The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room.
9. The train car thawing apparatus of claim 7, wherein, The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room.
10. A method of heating and thawing a railcar using the railcar heating and thawing apparatus of claim 9, wherein, The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. The utility model relates to a heat exchange pipeline and a smoke backflow pipeline are arranged in a heat preservation room, and the high-temperature smoke of a thermal power plant is radiated to the heat preservation room through the heat exchange pipeline to heat the heat preservation room. 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