Safety protection system for auxiliary heating of oil tank in extreme environment

Abstract

The invention discloses an oil tank auxiliary heating safety protection system in an extreme environment. The oil tank auxiliary heating safety protection system comprises an oil tank body, an air guide pipe, a heating piece, a plate type heat preservation cover, a temperature control device and a low-temperature switch controller, wherein the air guide pipe and the heating piece are attached to the oil tank body; the oil tank body is sleeved with the plate type heat preservation cover; air circularly flows in a well type air channel, an air guide pipe and an air guide groove in the plate type heat preservation cover, and heat generated in a heating piece and the air guide pipe is rapidly diffused into fuel stored in the fuel tank through a heat conduction piece on the inner wall of the fuel tank body through the fuel tank body. The fuel height in the fuel tank body is judged by monitoring and analyzing the temperature of the fuel tank body in the heating process, and heating is performed at partial height, so that the effects of saving electric energy and ensuring the safety of the fuel tank are achieved; the predicted starting operation time of the vehicle is analyzed, preheating work of the oil tank body is started in advance, and normal starting of the vehicle during use is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of fuel tank auxiliary function technology, and mainly relates to a fuel tank auxiliary heating safety protection system under extreme environments. Background Technology

[0002] Currently, at extremely low temperatures, the diesel fuel in the tank will experience paraffin precipitation, which will reduce the flow of diesel fuel, clog the diesel filter, and cause poor fuel supply. The vehicle may also experience reduced power, difficulty starting, or even stalling, making it unable to operate normally. Therefore, there is a need for a method that can provide auxiliary heating to the fuel tank in extreme low-temperature environments, enabling preheating to ensure smooth diesel fuel supply without affecting normal vehicle operation, reducing waiting time for heating, and ensuring the safety of the fuel tank during the heating process. Summary of the Invention

[0003] The purpose of this invention is to provide a safety protection system for auxiliary heating of fuel tanks under extreme environments, which aims to solve the problem of heating and preheating existing diesel fuel tanks in extreme low-temperature environments.

[0004] To achieve the above objectives, the present invention provides a fuel tank auxiliary heating safety protection system under extreme environments, including a fuel tank body, an air duct and heating element attached to the fuel tank body, a plate-type heat insulation cover fitted on the outside of the fuel tank body, and a temperature control device and a low-temperature switch controller installed on the plate-type heat insulation cover. The low-temperature switch controller is electrically connected to the temperature control device, and the temperature control device is electrically connected to several heating elements and a fan-heating device respectively. The temperature control device is also electrically connected to several temperature sensors, and several temperature sensors are arranged longitudinally on the surface of the oil tank. Several heating elements are spaced apart and attached to the surface of the fuel tank body, with air ducts spaced apart between every two heating elements, and a gap is left between the air ducts and the surface of the fuel tank body. Both ends of the air duct are provided with pipe openings, and a locking slot is provided on one side of the air duct body. A heat sink is installed in the locking slot. The heat sink includes a ceramic heater and a fan. The bottom of the air duct is provided with an air guide groove, and an air guide opening is provided on the surface of the air guide groove; The plate-type heat insulation cover is provided with an air inlet and an air guide mesh; The two air ducts vertically arranged on two adjacent surfaces of the oil tank body are spaced apart and combined with the plate insulation cover. The vertical junctions between the multiple layers of air ducts vertically spaced on the surface of the oil tank body form a well-type air duct from bottom to top. Air is drawn into the well-type air duct through the air inlet on the plate insulation cover. The fan in each air duct draws the air in the well-type air duct into its respective air duct, and the air is heated by the ceramic heater. The heated air in the air duct is discharged from the air duct at the bottom of the air duct, and the heated air is applied to the surface of the fuel tank. The heating elements installed on the fuel tank body release heat onto the fuel tank body after being energized and heated. Air circulates within the well-type air duct, air guide pipe, and air guide slot inside the panel insulation cover, and some air is discharged through the air guide mesh on the panel insulation cover; The low-temperature switch controller senses the low temperature and controls the temperature control device to activate the heating element and the air heating device to automatically heat the fuel tank body and preheat the fuel tank body according to the vehicle's operating status and preset vehicle start time.

[0005] The protrusions on both sides of the bottom air guide groove of the air guide duct form a gap between the air guide duct and the surface of the oil tank body, and concave grooves are formed on both sides of the air guide groove, so that the air discharged from the air guide port on the air guide groove can be discharged to the concave grooves on both sides.

[0006] The heating elements and air ducts on the outside of the oil tank are covered with heat insulation sheets, and the heat insulation sheets are covered with a plate-type heat insulation cover.

[0007] The inner wall of the oil tank is equipped with several heat-conducting fins to quickly diffuse heat into the interior of the oil tank.

[0008] The plate-type heat insulation cover is equipped with a temperature control device, which is equipped with a touch screen display module and internally includes a microcontroller, an oil tank temperature regulation module, an oil tank temperature recognition module, and an oil tank temperature analysis module. The microcontroller is electrically connected to the touch screen display module, the fuel tank temperature control module, the fuel tank temperature recognition module, and the fuel tank temperature analysis module. The oil tank temperature control module is also electrically connected to several heating elements and ceramic heaters and fans inside the air duct; The oil tank temperature recognition module is electrically connected to several temperature sensors, which are disposed on the surface of the oil tank body on one side of the heating element.

[0009] The cryogenic switch controller includes a temperature control microcontroller, a temperature monitoring module, a temperature control switch module, a tilt sensor, a time module, and a data analysis module; The temperature control microcontroller is electrically connected to the temperature monitoring module, the temperature control switch module, the tilt sensor, the time module, and the data analysis module, respectively. The temperature control switch module is electrically connected to the microcontroller of the temperature control device. The temperature control microcontroller is connected to the vehicle's battery. It senses the air temperature through the temperature monitoring module. When the air temperature is lower than the preset temperature threshold, the temperature control microcontroller controls the temperature control switch module to supply power to the microcontroller of the temperature control device.

[0010] The tilt sensor senses the vehicle's running and stopped states. In conjunction with the time module, the data analysis module analyzes the estimated running time of the vehicle's start-up. When the temperature monitoring module detects that the air temperature is lower than the preset air temperature threshold, the time module controls the temperature control device to start the heating operation one hour before the estimated running time of the vehicle's start-up, in preparation for preheating the fuel tank before the vehicle starts.

[0011] Several temperature sensors are longitudinally arranged on the surface of the fuel tank. Two temperature sensors located in the middle and lower parts of the fuel tank surface detect a lower surface temperature than the other temperature sensors in the upper middle part. The fuel tank temperature analysis module then analyzes the temperature data. Based on the different fuel levels in the tank, if there is no medium to absorb heat in the upper middle part of the tank, the heat generated by the heating element directly acts on the metal wall of the tank, causing the surface temperature to rise rapidly. This results in different temperature values ​​on the surface of the fuel tank due to different heights. It is determined that the upper middle part of the fuel tank is in a state of low fuel level, and there is no need to heat the upper middle part of the fuel tank. The microcontroller controls the air-heating device and heating element located in the upper middle part of the fuel tank surface to stop working, saving energy.

[0012] Beneficial effects of this invention: Heating elements and a fan are installed on the surface of the fuel tank. While the heating elements heat the surface of the fuel tank, the fan circulates the air inside the heating element to accelerate the temperature rise of the fuel tank surface.

[0013] 2. The inner wall of the fuel tank is equipped with several heat-conducting fins. These fins quickly dissipate the heat from the fuel tank to the fuel stored inside, thus enhancing the thermal conductivity of the fuel tank.

[0014] 3. Several heating elements and temperature sensors are installed on the surface of the fuel tank. By monitoring and analyzing the temperature of the fuel tank during the heating process, the fuel level in the fuel tank is determined, and partial heating is performed to save energy and ensure the safety of the fuel tank.

[0015] 4. The tilt sensor senses the vehicle's daily operating and stationary status. In conjunction with the time module, the data analysis module analyzes the estimated start-up time of the vehicle and initiates the fuel tank preheating process in advance to ensure normal vehicle start-up during use.

[0016] 5. It adopts a linkage control method that combines a low-temperature switch controller and a temperature control device, each with its own independent execution function and a strict power-on control procedure, thereby improving the safety of the auxiliary heating device in the oil tank. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 A schematic diagram of the structure of the fuel tank body of the present invention, which includes heating elements and air ducts; Figure 4 This is a schematic diagram of the air duct and air-heating device of the present invention; Figure 5 This is a schematic diagram of the air guide channel structure of the air guide duct of the present invention; Figure 6 This is a schematic diagram of the air-heating device structure for the air duct of the present invention; Figure 7 This is a schematic diagram of the side structure of the air duct of the present invention; Figure 8 This is a schematic diagram of the structure of the air-heating device of the present invention; Figure 9 This is a schematic diagram of the internal structure of the fuel tank body of the present invention; Figure 10 This is a schematic diagram of the internal structure of the cryogenic switch controller and temperature control device of the present invention; Figure 11 This is a schematic diagram of the well-type air duct structure of the present invention; Figure 12 This is a schematic diagram of the system of the present invention.

[0018] Figure reference numerals: 1. Plate-type insulation cover; 2. Temperature control device; 3. Low-temperature switch controller; 4. Heating element; 5. Air-heating device; 6. Temperature sensor; 7. Ceramic heater; 8. Fan; 9. Air duct; 10. Air outlet; 11. Insulation sheet; 12. Air guide groove; 13. Air guide mesh; 14. Concave groove; 15. Heat-conducting sheet; 16. Touch screen display module; 17. Microcontroller; 18. Air inlet; 19. Oil tank temperature control module; 20. Oil tank temperature recognition module; 21. Oil tank temperature analysis module; 22. Snap-in slot; 23. Well-type air duct; 24. Oil tank body; 25. Temperature control microcontroller; 31. Temperature monitoring module; 32. Temperature control switch module; 33. Tilt sensor; 34. Time module; 35. Data analysis module; 36. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0020] Reference Figure 1-12 As shown, the fuel tank auxiliary heating safety protection system under extreme environment includes fuel tank body 25, air duct 9 and heating element 4 attached to fuel tank body 25, plate insulation cover 1 sleeved on the outside of fuel tank body 25, and temperature control device 2 and low temperature switch controller 3 installed on plate insulation cover 1. The fuel tank body is provided with a number of heat-conducting plates 16 inside the ring. The heat received on the surface of the fuel tank body is quickly diffused to the fuel in the fuel tank body through the heat-conducting plates 16 inside the ring, thereby heating the fuel.

[0021] The heating elements 4 are spaced apart on the surface of the fuel tank body 25 to heat the fuel tank body; a temperature sensor 6 electrically connected to the temperature control device 2 is provided on one side of the heating element 4. The temperature sensors 6 at different heights on the surface of the fuel tank body 25 are used to sense the different temperatures at different heights on the surface of the fuel tank body 25 due to the different fuel levels in the fuel tank. Air guide pipes 9 are provided at intervals between every two heating elements 4, and a gap is left between the air guide pipes 9 and the surface of the oil tank body 25. Both ends of the air duct 9 are provided with pipe openings 11, and a locking slot 23 is opened on one side of the air duct 9. The locking slot 23 is used to lock the air heating device 5. The air heating device 5 includes a ceramic heater 7 and a fan 8. Several heating elements 4 and the air heating device 5 are electrically connected to the temperature control device 2. The temperature control device 2 is electrically connected to the low temperature switch controller 3. The bottom of the air duct 9 is provided with an air guide groove 13, and an air guide port 10 is opened on the groove surface of the air guide groove 13. An air inlet 19 and an air guide mesh 14 are provided on the plate-type heat insulation cover 1 that is fitted on the outside of the oil tank body 25. The two air ducts 9 vertically arranged on two adjacent surfaces of the oil tank body 25 are spaced apart and combined with the plate insulation cover 1. The vertical junction of the multi-layer air ducts 9 vertically spaced on the surface of the oil tank body 25 forms a well-type air duct 24 from bottom to top. Air is drawn into the well-type air duct 24 through the air inlet 19 on the plate insulation cover 1. The fan 8 in each air duct 9 draws the air in the well-type air duct 24 into its respective air duct 9. The air is heated by the ceramic heater 7. The heated air in the air duct 9 is discharged from the air duct port 10 at the bottom of the air duct 9, and the heated air is applied to the surface of the oil tank body 25 until the oil tank body is heated and the temperature is increased. The heating elements 4 installed on the oil tank body 25 release heat onto the oil tank body 25 after being heated by electricity; The protrusions on both sides of the bottom air guide groove 13 of the air guide pipe 9 form a gap between the air guide pipe 9 and the surface of the oil tank body 25, and the air guide groove 13 forms concave grooves 15 on both sides, so that the air guided by the air guide port 10 on the air guide groove 13 is discharged to the concave grooves 15 on both sides, and the discharged air enters the well-type air duct 24 for recirculation and heating. Air circulates within the well-type air duct 24, air guide pipe 9, and air guide slot 13 inside the panel insulation cover 1, and a portion of the air is discharged through the air guide mesh 14 on the panel insulation cover 1.

[0022] The heating element 4 and air duct 9 on the outside of the oil tank are covered with heat insulation sheet 12 to maintain the temperature of the oil tank after heating. A plate-type heat insulation cover 1 for protection and heat preservation is placed on the outside of the heat insulation sheet 12.

[0023] During use, the heating status, oil tank temperature, set ambient temperature threshold, and preheating time are displayed via the touch screen display module 17. The temperature control microcontroller 31 of the low temperature switch controller 3 is connected to the vehicle's battery for power supply. It senses the air temperature of the natural environment through the temperature monitoring module 32. When the temperature is lower than the preset air temperature threshold of 8°C, the temperature control microcontroller 31 controls the temperature control switch module 33 to supply power to the microcontroller 18 of the temperature control device 2. After the temperature control device 2 is powered on, it controls the temperature of the oil tank body by controlling several temperature sensors 6 connected to the oil tank temperature identification module 21, and at the same time controls the ceramic heater 7 of the air heating device 5 connected to the oil tank temperature regulation module 20 to heat, the fan 8 to rotate, and several heating elements 4 to heat. When the fan 8 rotates, the air outside the panel insulation cover 1 enters through the air inlet 19. The air is heated and circulated in the well-type air duct 24, air guide pipe 9 and air guide groove 13 inside the panel insulation cover 1. A portion of the air is discharged through the air guide mesh 14 on the panel insulation cover 1. As the temperature of the fuel tank rises, temperature sensors 6 positioned at different heights within the tank measure its temperature. Influenced by the height of the fuel medium inside the tank, two of the temperature sensors 6 located longitudinally on the surface of the fuel tank 25—one in the middle and one at the bottom—detect a lower surface temperature than the other sensors 6 in the upper middle section. The fuel tank temperature analysis module then analyzes the temperature data. Based on the varying fuel levels, if the upper middle section lacks fuel to absorb heat, the heat generated by the heating element directly acts on the metal wall of the tank, causing a rapid rise in surface temperature. This results in different temperature values ​​on the surface of the fuel tank 25 due to varying heights. This indicates that the upper middle section of the fuel tank 25 is in a low-fuel-content state, eliminating the need for heating. The microcontroller, via the fuel tank temperature control module, stops the operation of the fan-heating device and heating elements located in the upper middle section of the fuel tank 25, saving energy and ensuring fuel tank safety.

[0024] The tilt sensor 34 of the temperature control switch module 33 senses the daily operating and stopping status of the vehicle, and works with the time module 35 to analyze the estimated running time of the vehicle to start through the data analysis module 36. If the vehicle is scheduled to start at 7:00 AM every day, when the temperature monitoring module 32 detects that the air temperature is 8°C lower than the preset temperature threshold, the time module 35 will control the temperature control device 2 to start heating 1 hour before the scheduled start time of the vehicle, in order to preheat the fuel tank before the vehicle starts.

[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A fuel tank auxiliary heating safety protection system under extreme environments, characterized in that: It includes an oil tank body (25), an air duct (9) and a heating element (4) attached to the oil tank body (25), a plate-type heat insulation cover (1) fitted on the outside of the oil tank body (25), and a temperature control device (2) and a low temperature switch controller (3) installed on the plate-type heat insulation cover (1). The low-temperature switch controller (3) is electrically connected to the temperature control device (2), and the temperature control device (2) is electrically connected to a plurality of heating elements (4) and a fan-heating device (5); The temperature control device (2) is also electrically connected to several temperature sensors (6), and several temperature sensors (6) are arranged longitudinally on the surface of the oil tank body (25). Several heating elements (4) are spaced apart and attached to the surface of the tank body (25), and air ducts (9) are spaced apart between every two heating elements (4), with a gap between the air ducts (9) and the surface of the tank body (25); Both ends of the air duct (9) are provided with pipe openings (11), and a locking slot (23) is opened on one side of the air duct (9). The locking slot (23) is used to lock the air heating device (5), which includes a ceramic heater (7) and a fan (8). The bottom of the air duct (9) is provided with an air guide groove (13), and an air guide port (10) is opened on the groove surface of the air guide groove (13). The plate-type heat insulation cover (1) is provided with an air inlet (19) and an air guide mesh (14). The two air ducts (9) vertically arranged on two adjacent surfaces of the oil tank body (25) are spaced apart and combined with the plate insulation cover (1). The vertical junction of the multi-layer air ducts (9) vertically spaced on the surface of the oil tank body (25) forms a well-type air duct (24) from bottom to top. Air is drawn into the well-type air duct (24) through the air inlet (19) opened on the plate insulation cover (1). The air in the well-type air duct (24) is drawn into its respective air duct (9) by the fan (8) in each air duct (9). The air is heated by the ceramic heater (7). The heated air in the air duct (9) is discharged from the air duct (10) at the bottom of the air duct (9), and the heated air is applied to the surface of the tank body (25); The heating elements (4) installed on the tank body (25) release heat onto the tank body (25) after being heated by electricity; Air circulates within the well-type air duct (24), air guide pipe (9), and air guide slot (13) inside the panel insulation cover (1), and a portion of the air is discharged through the air guide mesh (14) on the panel insulation cover (1). The inner wall of the fuel tank is provided with several heat-conducting plates (16), which rapidly diffuse the heat generated in the heating plate (4) and the air duct (9) into the fuel stored in the fuel tank through the heat-conducting plates (16) on the inner wall of the fuel tank.

2. The fuel tank auxiliary heating safety protection system under extreme environments according to claim 1, characterized in that: The protrusions on both sides of the bottom air guide groove (13) of the air guide pipe (9) form a gap between the air guide pipe (9) and the surface of the oil tank body (25), and the air guide groove (13) forms concave grooves (15) on both sides, so that the air guided by the air guide port (10) on the air guide groove (13) can be discharged to the concave grooves (15) on both sides.

3. The fuel tank auxiliary heating safety protection system under extreme environments according to claim 1, characterized in that: The heating element (4) and air duct (9) on the outside of the oil tank are covered with heat insulation sheet (12), and a plate heat insulation cover (1) is fitted on the outside of the heat insulation sheet (12).

4. The fuel tank auxiliary heating safety protection system under extreme environments according to claim 1, characterized in that: The temperature control device (2) is equipped with a touch screen display module (17), and internally includes a microcontroller (18), an oil tank temperature regulation module (20), an oil tank temperature identification module (21), and an oil tank temperature analysis module (22). The microcontroller (18) is electrically connected to the touch screen display module (17), the oil tank temperature control module (20), the oil tank temperature recognition module (21), and the oil tank temperature analysis module (22), respectively. The oil tank temperature control module (20) is also electrically connected to several heating elements (4) and ceramic heaters (7) and fans (8) in the air duct (9); The oil tank temperature recognition module (21) is electrically connected to several temperature sensors (6), and the temperature sensors (6) are disposed on the surface of the oil tank body (25) on one side of the heating element (4).

5. The fuel tank auxiliary heating safety protection system under extreme environments according to claim 1, characterized in that: The low-temperature switch controller (3) includes a temperature control microcontroller (31), a temperature monitoring module (32), a temperature control switch module (33), a tilt sensor (34), a time module (35), and a data analysis module (36). The temperature control microcontroller (31) is electrically connected to the temperature monitoring module (32), the temperature control switch module (33), the tilt sensor (34), the time module (35), and the data analysis module (36), respectively. The temperature control switch module (33) is electrically connected to the microcontroller (18) of the temperature control device (2). The temperature control microcontroller (31) is connected to the vehicle's battery. It senses the air temperature through the temperature monitoring module (32). When the air temperature is lower than the preset air temperature threshold, the temperature control microcontroller (31) controls the temperature control switch module (33) to supply power to the microcontroller (18) of the temperature control device (2).

6. The fuel tank auxiliary heating safety protection system under extreme environments according to claim 5, characterized in that: The tilt sensor (34) senses the vehicle's running and stopping status. In conjunction with the time module (35), the data analysis module (36) analyzes the expected running time of the vehicle's start-up. When the temperature monitoring module (32) detects that the air temperature is lower than the preset air temperature threshold, the time module (35) controls the temperature control device (2) to start the heating operation 1 hour before the expected running time of the vehicle's start-up.

7. The fuel tank auxiliary heating safety protection system under extreme environments according to claim 1, characterized in that: Several temperature sensors (6) are longitudinally arranged on the surface of the fuel tank body (25). Two temperature sensors (6) located on the surface of the middle and lower parts of the fuel tank body (25) sense that the surface temperature of the fuel tank body (25) is lower than the temperature detected by the other temperature sensors (6) in the upper middle part. Then, the temperature data is analyzed by the fuel tank temperature analysis module. According to the different fuel levels in the fuel tank, if there is no medium to absorb heat in the upper middle part of the fuel tank, the heat generated by the heating element will directly act on the metal wall of the tank body, causing the surface temperature of the tank body to rise rapidly. As a result, the surface of the fuel tank body (25) will have different temperature values ​​due to different heights. It is determined that the interior of the upper middle part of the fuel tank body (25) is in a state of fuel shortage. There is no need to heat the upper middle part of the fuel tank body (25). The microcontroller controls the air heating device and heating element located in the upper middle part of the surface of the fuel tank body (25) to stop working through the fuel tank temperature control module.

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