Fuel oil heating device and engineering machinery

Abstract

The utility model relates to the field of engineering machinery, and discloses a fuel oil heating device and engineering machinery. The fuel oil heating device comprises a first heater arranged in an oil tank and used for heating fuel oil in the oil tank; the second heater is arranged on the shell of the fuel filter and is used for heating the fuel flowing through the fuel filter; and the heating controller is used for starting and stopping the first heater and the second heater. The engineering machinery comprises the fuel oil heating device. The fuel oil in the oil tank and the fuel oil filter is electrically heated by combining the first heater and the second heater, so that the fuel oil is continuously and comprehensively heated at key positions of an oil supply path, the oil supply path is quickly dredged, the problem of heating the fuel oil in an extremely cold environment is solved, efficient and quick heating is achieved, and the service life of the fuel oil is prolonged. Mounting and dismounting are convenient, the universality is high, and the environment-friendly effect is achieved.

Description

Technical Field

[0001] This application belongs to the technical field of construction machinery, and particularly relates to a fuel heating device and construction machinery. Background Art

[0002] Most construction machinery uses diesel engines to provide power. When operating in cold regions, the diesel in the vehicle-mounted fuel tank is prone to waxing, and the diesel engine often has problems such as difficult cold start and poor working performance. In this regard, the prior art usually uses measures such as fuel water heaters, combustion heaters, and diesel anticoagulants to deal with them. The fuel water heater is usually connected in series in the fuel supply pipeline between the vehicle-mounted fuel tank and the diesel engine, and preheats the diesel electrically while pumping the diesel. The combustion heater is usually also connected in series in the fuel supply pipeline to heat the diesel in the local fuel supply pipeline by combustion. The diesel anticoagulant is usually added to the vehicle-mounted fuel tank to reduce the waxing of diesel.

[0003] However, for extremely cold environments of ≤ -35°C, the preheating power of the fuel water heater is limited, and the preheating effect of the diesel cannot meet the requirements. Excessive use of diesel anticoagulants will clog the fuel injectors and fuel pumps of the diesel engine, affecting the service life of the diesel engine. The installation and use of the combustion heater are complex, and it is necessary to consider the fuel supply pipeline configuration and reserve a smoke exhaust port. The overall layout requirements are high, and it also increases air pollution. Summary of the Utility Model

[0004] The purpose of this application is to provide a fuel heating device and construction machinery, which are used to solve the problem of fuel heating of construction machinery in extremely cold environments, and achieve the effects of efficient and rapid heating, convenient installation and disassembly, high versatility, and environmental protection.

[0005] To achieve the above purpose, the first aspect of this application provides a fuel heating device, including:

[0006] A first heater, which is arranged in the fuel tank and is used to heat the fuel in the fuel tank;

[0007] A second heater, which is arranged on the outer shell of the fuel filter and is used to heat the fuel flowing through the fuel filter;

[0008] A heating controller, which is used to start and stop controlling the first heater and the second heater.

[0009] In some embodiments, the fuel tank is provided with an oil extraction port, and the first heater is arranged close to the oil extraction port.

[0010] In some embodiments, an oil extraction pipe extending towards the bottom is provided in the fuel tank, and the head end of the oil extraction pipe is the oil extraction port; the first heater is a heating rod, and the heating rod is arranged at the bottom of the fuel tank and arranged around the head end of the oil extraction pipe, and the tail end of the heating rod extends outwards and is electrically connected to the heating controller.

[0011] In some embodiments, the fuel heating device further includes a third heater disposed in a fuel supply pipe for transporting fuel, and the third heater is controlled to start and stop by the heating controller and is used to heat the fuel in the fuel supply pipe.

[0012] In some embodiments, the third heater is a heating wire, a pipe joint is provided at the end of the fuel supply pipe, and the heating wire extends outwards from the side wall of the pipe joint and is electrically connected to the heating controller.

[0013] In some embodiments, the length of the heating wire is not less than 80% of the length of the fuel supply pipe.

[0014] In some embodiments, the fuel heating device further includes a temperature sensor disposed near the oil extraction port of the fuel tank, and the temperature sensor is used to obtain the fuel temperature around the oil extraction port and feedback it to the heating controller.

[0015] In some embodiments, the fuel heating device is powered by an on-vehicle battery; the heating controller is provided with a battery protection circuit for detecting the working voltage of the on-vehicle battery, and the heating controller is further configured to issue an alarm reminder and stop fuel heating when the working voltage is lower than a set voltage.

[0016] In some embodiments, the heating controller is further provided with a working protection circuit for detecting the working states of the first heater and the second heater, and the heating controller is further configured to issue an alarm reminder when a short circuit or an open circuit occurs in the circuit of the first heater or the second heater.

[0017] In some embodiments, the heating controller includes a control screen for displaying status information and controlling the start and stop of the first heater and the second heater.

[0018] The second aspect of the present application provides a construction machine including the above fuel heating device.

[0019] Compared with the prior art, the beneficial effects of the present application are:

[0020] By combining the first heater and the second heater, the present application electrically heats the fuel in the fuel tank and the fuel filter, enabling the fuel to be continuously and comprehensively heated at key positions in the fuel supply path, achieving rapid dredging of the fuel supply path, thereby solving the problem of fuel heating in extremely cold environments, achieving efficient and rapid heating, being convenient for installation and disassembly, having high versatility, and being green and environmentally friendly.

[0021] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiments section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. In the drawings:

[0023] Figure 1 is a structural diagram of the fuel heating device according to the specific embodiment of the present application.

[0024] Description of the reference numerals: heating rod 1, heating wire 2, heating controller 3, temperature sensor 4, heating sheath 5, fuel tank 6, oil intake port 61, oil intake pipe 62, sealing joint 63, fuel supply pipe 7, pipe joint 71, fuel filter 8. SPECIFIC EMBODIMENTS

[0025] The following will describe in detail the specific embodiments of the present application with reference to the drawings. It should be understood that the specific embodiments described herein are only for explaining and illustrating the present application and are not used to limit the present application.

[0026] As Figure 1 shown, a fuel heating device includes:

[0027] A heating rod 1, disposed in the fuel tank 6 and used for heating the fuel in the fuel tank 6;

[0028] A heating wire 2, disposed in the fuel supply pipe 7 and used for heating the fuel in the fuel supply pipe 7;

[0029] A heating sheath 5, disposed on the outer shell of the fuel filter 8 and used for heating the fuel flowing through the fuel filter 8;

[0030] A heating controller 3, used for starting and stopping the heating rod 1, the heating wire 2, and the heating sheath 5.

[0031] In this application, the first heater is the heating rod 1, the second heater is the heating sheath 5, and the third heater is the heating wire 2. The fuel is stored in the fuel tank 6, pumped by a fuel pump, filtered by a fuel filter 8, and then transported to the engine through a fuel supply pipe 7. The fuel filter 8 is connected in series between the fuel tank 6 and the engine through the fuel supply pipe 7. Under the control of the heating controller 3, the heating rod 1 electrically heats the fuel in the fuel tank 6. The heating wire 2 is threaded through the fuel supply pipe 7 to electrically heat the fuel in the fuel supply pipe 7. The heating sheath 5 is attached to the outer shell of the fuel filter 8 to electrically heat the fuel in the fuel filter 8. First, in the entire fuel supply process, since there is a large amount of fuel in the fuel tank 6 and the fuel filter 8, the fuel inside is more likely to wax and block the fuel flow in extremely cold environments. Therefore, as the key positions for fuel heating, the fuel tank 6 and the fuel filter 8 can achieve efficient and rapid dredging of the entire fuel supply process by setting the heating rod 1 and the heating sheath 5. Second, compared with the prior art where fuel is only heated at local positions, the heating rod 1 and the heating wire 2 continuously and comprehensively heat the fuel along the fuel supply path. The fuel reaches the engine in a gradually increasing temperature manner, reducing the heat exchange process between cold and hot fuel and the heat loss of hot fuel, and achieving the requirement of fuel heating with a lower heating power, thus improving the heating speed and heating efficiency of the fuel. Third, compared with combustion heaters, the heating rod 1, the heating wire 2, and the heating sheath 5 can be easily installed on the original fuel tank 6, fuel supply pipe 7, and fuel filter 8 without complicated modification work, with convenient installation and disassembly and high versatility. Finally, the heating rod 1, the heating wire 2, and the heating sheath 5 all use electric heating for fuel, without combustion flue gas emissions, being green and environmentally friendly, having good economy, and providing a good user experience.

[0032] Specifically, the fuel tank 6 is provided with an oil intake 61 for connecting the fuel supply pipe 7, and the heating rod 1 is arranged close to the oil intake 61. The fuel enters the fuel supply pipe 7 through the oil intake 61 for pumping. The heating rod 1 performs fixed-point heating close to the oil intake 61, which can quickly heat the fuel to be pumped out without heating all the fuel in the fuel tank 6, further improving the heating speed and heating efficiency of the fuel.

[0033] Furthermore, an oil extraction pipe 62 extending towards the bottom is provided in the fuel tank 6. The head end of the oil extraction pipe 62 is the oil intake 61, and the tail end of the oil extraction pipe 62 is connected to the fuel supply pipe 7. The heating rod 1 is arranged at the bottom of the fuel tank 6 and arranged around the head end of the oil extraction pipe 62. The tail end of the heating rod 1 extends outwards and is electrically connected to the heating controller 3. For the fuel tank 6 with upper oil outlet, the heating rod 1 is arranged opposite to the oil extraction pipe 62 at the bottom of the fuel tank 6, and only the fuel around the oil intake 61 is heated with a shorter layout of the heating rod 1.

[0034] Specifically, an oil pipe joint 71 is provided at the end of the fuel supply pipe 7. The heating wire 2 extends outward from the side wall of the oil pipe joint 71 and is electrically connected to the heating controller 3. The length of the heating wire 2 is not less than 80% of the length of the fuel supply pipe 7 to ensure the heating effect on the fuel in the fuel supply pipe 7.

[0035] In some embodiments, an oil extraction pipe 62 is installed on the top wall of the fuel tank 6. The oil extraction pipe 62 extends vertically downward to the bottom of the fuel tank 6. A plurality of sealing joints 63 are threadedly connected to the bottom wall of the fuel tank 6. Two heating rods 1 are installed on the bottom wall of the fuel tank 6 through the sealing joints 63, inserted upward into the interior of the fuel tank 6 and located on both sides of the head end of the oil extraction pipe 62. The maximum operating temperature of the heating rod 1 is 130 °C, which is lower than the diesel ignition point of 220 °C. The total power of the heating rod 1 is 240 W. The heating wire 2 is of a two-wire system. The head end of the heating wire 2 passes through the fuel supply pipe 7, and the tail end of the heating wire 2 leaves the fuel supply pipe 7 through the oil pipe joint 71 and is electrically connected to the heating controller 3. The surface of the heating wire 2 is wrapped with an insulating layer with an ultimate temperature tolerance of up to 200 °C. The heating sheath 5 is an electric heating sheet, closely attached to the outer shell of the fuel filter 8 and quickly fixed by a clamp.

[0036] In some other embodiments (not shown in the figure), the oil extraction port can be an opening in the bottom wall of the fuel tank or an opening in the side wall at the bottom. The heating rod is in a cylindrical spiral shape, and its axis is aligned with the center of the oil extraction port.

[0037] Specifically, the fuel heating device further includes a temperature sensor 4 disposed near the oil extraction port 61 of the fuel tank 6. The temperature sensor 4 is used to obtain the fuel temperature around the oil extraction port 61 and feedback it to the heating controller 3. The addition of the temperature sensor 4 enables the heating controller 3 to achieve automatic control of fuel heating after being configured with a program. For example, the heating controller 3 monitors the fuel temperature at the oil extraction port 61 of the fuel tank 6 in real time through the temperature sensor 4. When the fuel temperature ≥ 18 °C, the heating rod 1, the heating wire 2, and the heating sheath 5 are automatically shut down. When the fuel temperature ≤ 6 °C, the heating rod 1, the heating wire 2, and the heating sheath 5 are automatically turned on.

[0038] In some embodiments, the temperature sensor 4 is installed on the bottom of the fuel tank 6 through the sealing joint 63, inserted upward into the interior of the fuel tank 6 and located beside the heating rod 1. The tail end of the temperature sensor 4 extends outward and is electrically connected to the heating controller 3.

[0039] Specifically, the fuel heating device is powered by the vehicle-mounted battery. The heating controller 3 is provided with a battery protection circuit for detecting the working voltage of the vehicle-mounted battery. The heating controller 3 is further configured to issue an alarm reminder and stop fuel heating when the working voltage is lower than the set voltage. The fuel heating device is powered by the vehicle-mounted battery, eliminating the need for an additional power source and being unrestricted by the external environment of the whole vehicle, thus enhancing the versatility of the fuel heating device. The battery protection circuit monitors the working voltage of the vehicle-mounted battery. Only when the working voltage is greater than the threshold value does the fuel heating device start heating, preventing the vehicle-mounted battery from discharging and affecting the normal operation of construction machinery.

[0040] In some embodiments, the rated voltage of the vehicle-mounted battery is 24V. The heating controller 3 obtains power from the vehicle-mounted battery and supplies power to the heating rod 1, the heating wire 2, the temperature sensor 4, and the heating sheath 5. The heating rod 1, the heating wire 2, and the heating sheath 5 all use a 24V working voltage, and the heating controller 3 does not need to perform voltage modulation. During the operation of the fuel heating device, when the battery protection circuit of the heating controller 3 monitors that the working voltage of the vehicle-mounted battery is greater than 22V, it starts one or more of the heating rod 1, the heating wire 2, and the heating sheath 5 for fuel heating; otherwise, it issues an alarm reminder through the corresponding fault light and stops fuel heating.

[0041] Furthermore, the heating controller 3 is also provided with a working protection circuit for detecting the working states of the heating rod 1, the heating wire 2, and the heating sheath 5. The heating controller 3 is further configured to issue an alarm reminder when the circuit of the heating rod 1 or the heating wire 2 or the heating sheath 5 is short-circuited or open-circuited. The heating controller 3 can, through the working protection circuit, issue an alarm reminder to the user when the heating rod 1 or the heating wire 2 or the heating sheath 5 fails, enhancing the safety of the fuel heating device.

[0042] In some embodiments, the working protection circuit of the heating controller 3 monitors the heating rod 1, the heating wire 2, and the heating sheath 5. As long as any one of the heating elements is short-circuited or open-circuited, the heating controller 3 issues an alarm reminder through the corresponding fault light and disconnects the power supply circuit of the heating element.

[0043] Furthermore, the heating controller 3 includes a control screen for displaying status information and controlling the start and stop of the heating rod 1, the heating wire 2, and the heating sheath 5.

[0044] In some embodiments, the control screen can display the fuel temperature around the oil intake 61 obtained by the temperature sensor 4 and the working states of the heating rod 1, the heating wire 2, and the heating sheath 5. The user can click on the control screen to start or stop the heating rod 1, the heating wire 2, and the heating sheath 5 with one key, or start or stop them individually, and can also set the automatic heating mode and related control thresholds.

[0045] Such as Figure 1As shown in the figure, a construction machinery includes a fuel tank 6, a fuel supply pipe 7, a fuel filter 8, a diesel engine, and the above-mentioned fuel heating device.

[0046] In some embodiments, the fuel tank 6, the fuel filter 8, and the diesel engine are sequentially connected through the fuel supply pipe 7. The fuel heating device is powered by a vehicle-mounted battery. Among them, the heating rod 1 is arranged in the fuel tank 6, the heating wire 2 is arranged in the fuel supply pipe 7, the heating sheath 5 is closely attached to the outer shell of the fuel filter 8, and the heating controller 3 is arranged in the cab.

[0047] In some embodiments, the heating power of the fuel heating device increases with the increase of the heating part and the length of the fuel supply pipe 7. Generally, the heating power of the whole set of devices does not exceed 500W, and the energy efficiency ratio is high. Verified by an actual vehicle of a certain crawler crane, when using No. 35 diesel at an ambient temperature of -41°C, after the fuel heating device heats for 10 minutes, there is no wax precipitation in the fuel in the fuel supply pipe 7.

[0048] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0049] In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0050] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0051] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A fuel heating device, characterized in that, The fuel heating device includes: A first heater, which is arranged in the fuel tank (6) and is used to heat the fuel in the fuel tank (6); A second heater, which is arranged on the outer shell of the fuel filter (8) and is used to heat the fuel flowing through the fuel filter (8); A third heater, which is arranged in the fuel supply pipe (7) for transporting fuel and is used to heat the fuel in the fuel supply pipe (7); A heating controller (3), which is used to start and stop controlling the first heater, the second heater and the third heater.

2. The fuel heating device according to claim 1, characterized in that, The fuel tank (6) is provided with an oil extraction port (61), and the first heater is arranged close to the oil extraction port (61).

3. The fuel heating device according to claim 2, characterized in that, An oil extraction pipe (62) extending towards the bottom is arranged in the fuel tank (6), and the head end of the oil extraction pipe (62) is the oil extraction port (61); the first heater is a heating rod (1), and the heating rod (1) is arranged at the bottom of the fuel tank (6) and is arranged around the head end of the oil extraction pipe (62), and the tail end of the heating rod (1) extends outwards and is electrically connected to the heating controller (3).

4. The fuel heating device according to claim 1, characterized in that, The third heater is a heating wire (2), a pipe joint (71) is arranged at the end of the fuel supply pipe (7), and the heating wire (2) extends outwards from the side wall of the pipe joint (71) and is electrically connected to the heating controller (3); and / or, the third heater is a heating wire (2), and the length of the heating wire (2) is not less than 80% of the length of the fuel supply pipe (7).

5. The fuel heating device according to claim 2, characterized in that, The fuel heating device further includes a temperature sensor (4) arranged close to the oil extraction port (61) of the fuel tank (6), and the temperature sensor (4) is used to obtain the fuel temperature around the oil extraction port (61) and feedback it to the heating controller (3).

6. The fuel heating device according to any one of claims 1 to 5, characterized in that, The fuel heating device is powered by a vehicle-mounted battery; the heating controller (3) is provided with a battery protection circuit for detecting the working voltage of the vehicle-mounted battery, and the heating controller (3) is further configured to issue an alarm reminder and stop fuel heating when the working voltage is lower than the set voltage.

7. The fuel heating device according to claim 6, characterized in that, The heating controller (3) is further provided with a working protection circuit for detecting the working states of the first heater and the second heater, and the heating controller (3) is further configured to issue an alarm reminder when the circuit of the first heater or the second heater is short-circuited or open-circuited.

8. The fuel heating device according to claim 6, characterized in that, The heating controller (3) includes a control screen for displaying status information and controlling the start and stop of the first heater and the second heater.

9. An engineering machinery, characterized in that, The construction machinery includes the fuel heating device according to any one of claims 1 to 8.

Images