Fuel preheating system for rail engineering vehicle

Abstract

The invention provides a fuel preheating system for a rail engineering vehicle, and belongs to the technical field of vehicles. The electric heating fuel preheating system comprises a gas-heat oil suction pipe, an electric heating oil conveying pipe and a filter element heater, the gas-heat oil suction pipe is installed on the fuel tank and can be used for taking oil from the fuel tank, one end of the electric heating oil conveying pipe is connected with the gas-heat oil suction pipe, and the other end of the electric heating oil conveying pipe is connected with equipment using fuel on the rail car through a filter element device. And a filter element heater is arranged on the filter element device. When the diesel oil deposits wax at a low temperature, the fuel oil conveying pipeline is heated before the vehicle is started, so that the fuel oil frozen in the oil way is unfrozen to guarantee normal starting of the vehicle; heating is conducted continuously in the running process, smooth oil supply is guaranteed, and the vehicle runs normally; and the problem of difficult starting or midway flameout caused by sudden temperature drop is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicles, and in particular relates to a fuel preheating system used in rail engineering vehicles. Background Art

[0002] The fuel system is a component installed between the fuel tank and the engine and other oil-using parts. It is a delivery device that provides fuel for the vehicle's engine and generator set, and is an important part of the vehicle. However, in cold areas in winter, when the ambient temperature is lower than the fuel antifreeze performance requirements, the fuel will wax and the fuel system will not be able to deliver fuel normally, causing the engine and generator set to fail to start normally or run poorly. Therefore, it is necessary to propose improvements to the above problems. Summary of the invention

[0003] The technical problem solved by the present invention is to provide a fuel preheating system for rail engineering vehicles. The purpose of the present invention is to avoid the problem of difficulty in starting the vehicle or stalling during operation due to a sudden drop in temperature by improving the fuel delivery system.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A fuel preheating system for rail engineering vehicles, the electrically heated fuel preheating system comprising an air-heated oil suction pipe, an electrically heated oil delivery pipe and a filter element heater, the air-heated oil suction pipe being installed on a fuel tank and being used to take oil from the fuel tank, one end of the electrically heated oil delivery pipe being connected to the air-heated oil suction pipe, the other end of the electrically heated oil delivery pipe being connected to a fuel-using device on a rail vehicle via a filter element, and the filter element being provided with a filter element heater.

[0006] To further define the above scheme, the gas-heated oil suction pipe includes a gas-heated inner pipe and an oil suction outer pipe sleeved outside the gas-heated inner pipe, a heating wire is installed inside the gas-heated inner pipe; the gas-heated oil suction pipe is fixed to the fuel tank through a flange, and the gas-heated oil suction pipe is immersed below the oil level in the fuel tank during installation.

[0007] As a further limitation of the above scheme, the electric heating oil pipeline is an integral structure consisting of an inner layer and an outer layer, and an electric heating wire is provided between the inner layer and the outer layer.

[0008] As a further limitation of the above scheme, the filter element heater is wrapped around the outer surface of the filter element and clamped with a clamp.

[0009] As a further limitation of the above scheme, a temperature sensor for detecting the temperature of the electric heating fuel preheating system is provided on the upper part of the gas heating oil suction pipe.

[0010] As a further limitation of the above scheme, the electrically heated fuel preheating system also includes an intelligent controller, and the gas-heated oil suction pipe, electrically heated oil delivery pipe, filter element heater and temperature sensor are all electrically connected to the intelligent controller.

[0011] The advantages of the present invention compared with the prior art are:

[0012] 1. This solution sets a preheating component on the fuel delivery system, specifically using a gas-heated oil suction pipe, an electric-heated oil delivery pipe, and a filter element heater. When the diesel is waxed at low temperatures, the fuel delivery pipeline is heated before the vehicle is started to thaw the fuel frozen in the oil line to ensure the normal start of the vehicle; continuous heating during driving ensures smooth fuel supply and normal operation of the vehicle; and avoids the problem of difficulty in starting or stalling midway due to a sudden drop in temperature;

[0013] 2. The electric heating fuel preheating system of this scheme can preheat for 3-8 minutes when the fuel in the fuel tank, pipeline and filter element is waxed, which can eliminate the wax and meet the normal operation of the system;

[0014] 3. This scheme uses an electrically heated fuel preheating system. Vehicles equipped with this system can use diesel with a higher freezing point than vehicles without this system, saving fuel costs;

[0015] 4. The electric fuel preheating system of this scheme can cooperate with the temperature sensor and the intelligent thermostat, and can automatically control whether each heater is working through the feedback signal of the temperature sensor, and can display whether the system is normal and fault display. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the electrically heated fuel preheating system provided by the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0019] See also Figure 1 , describe the embodiments of the present invention in detail.

[0020] Example: See Figure 1 As shown, a fuel preheating system for rail engineering vehicles, the electrically heated fuel preheating system comprises an air-heated oil suction pipe 1, an electrically heated oil delivery pipe 2 and a filter element heater 5, the air-heated oil suction pipe 1 is installed on the fuel tank and can be used to take oil from the fuel tank, one end of the electrically heated oil delivery pipe 2 is connected to the air-heated oil suction pipe 1, and the other end of the electrically heated oil delivery pipe 2 is connected to a fuel-using device on the rail vehicle through a filter element 4, and a filter element heater 5 is provided on the filter element 4.

[0021] The gas-heated oil suction pipe 1 is a device for sucking oil from the fuel tank and has filtering and heating functions. The device has a heating function. When the fuel in the fuel tank is waxed, it is energized to melt the fuel around the oil suction pipe and provide normal fuel supply. Specifically, the gas-heated oil suction pipe 1 includes a gas-heated inner pipe and an oil-absorbing outer pipe sleeved outside the gas-heated inner pipe. A heating wire is installed inside the gas-heated inner pipe. The gas-heated oil suction pipe 1 is fixed to the fuel tank through a flange. When installed, the gas-heated oil suction pipe 1 is immersed below the oil level in the fuel tank.

[0022] The electric heating oil pipeline is an oil pipeline with dual functions of electric heating and oil transportation. The heating circuit in the oil pipeline can heat the oil pipeline while meeting the normal oil transportation, thereby preventing the fuel inside the pipeline from waxing. Specifically, the electric heating oil pipeline 2 is an integrated structure consisting of an inner layer and an outer layer, and an electric heating wire is provided between the inner layer and the outer layer.

[0023] The filter element heater 5 is wrapped around the outer surface of the filter element 4 and clamped with a clamp. After power is turned on, the filter element can be heated to eliminate waxed fuel in the filter element.

[0024] There is no fixed form for the connection between the electric heating oil pipes and the equipment in the electric heating fuel preheating system of this scheme. The installation method, pipe diameter and oil pipe length can be changed according to specific needs.

[0025] The control mode of the electric heating fuel preheating system can be operated by a manual switch.

[0026] The control method of this electric heating fuel preheating system can also adopt intelligent control operation. The specific settings are as follows:

[0027] A temperature sensor 3 for detecting the temperature of the electric heating fuel preheating system is provided on the upper part of the gas heating oil suction pipe 1. When the oil temperature changes, the temperature sensor 3 can automatically feed back to the intelligent thermostat, and the intelligent thermostat can automatically heat or stop heating according to the temperature change.

[0028] The electrically heated fuel preheating system further comprises an intelligent controller 6 , and the gas heated oil suction pipe 1 , the electrically heated oil delivery pipe 2 , the filter element heater 5 and the temperature sensor 3 are all electrically connected to the intelligent controller 6 .

[0029] In this embodiment, the temperature feedback from the temperature sensor can be used to determine whether the heating elements such as the gas-heated oil suction pipe, the electric-heated oil pipeline, and the filter element heater are working or not. The intelligent controller controls whether each heating device needs to work through signals, and can also display the working status and heating faults.

[0030] This embodiment improves the intelligence of the fuel delivery system, controls the heating system to start or stop heating through a temperature sensor, avoids manual control, and improves operation accuracy.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fuel preheating system for a rail engineering vehicle, characterized in that: The electrically heated fuel preheating system comprises an air-heated oil suction pipe (1), an electrically heated oil delivery pipe (2) and a filter element heater (5); the air-heated oil suction pipe (1) is installed on the fuel tank and can be used to take oil from the fuel tank; one end of the electrically heated oil delivery pipe (2) is connected to the air-heated oil suction pipe (1); the other end of the electrically heated oil delivery pipe (2) is connected to a fuel-using device on a rail vehicle via a filter element (4); the filter element heater (5) is provided on the filter element (4); the air-heated oil suction pipe (1) is fixed to the fuel tank via a flange; the air-heated oil suction pipe (1) is immersed below the oil level in the fuel tank when installed.

2. The fuel preheating system for a rail engineering vehicle according to claim 1, characterized in that: The gas-heating oil absorption pipe (1) comprises a gas-heating inner pipe and an oil absorption outer pipe sleeved outside the gas-heating inner pipe, and a heating wire is installed inside the gas-heating inner pipe.

3. The fuel preheating system for a rail engineering vehicle according to claim 1, characterized in that: The electric heating oil pipeline (2) is an integrated structure consisting of an inner layer and an outer layer, and an electric heating wire is arranged between the inner layer and the outer layer.

4. The fuel preheating system for a rail engineering vehicle according to claim 1, characterized in that: The filter element heater (5) is wrapped around the outer surface of the filter element (4) and clamped with a clamp.

5. The fuel preheating system for a rail engineering vehicle according to claim 1, characterized in that: A temperature sensor (3) for detecting the temperature of the electric heating fuel preheating system is provided on the upper part of the gas heating oil absorption pipe (1).

6. The fuel preheating system for rail engineering vehicles according to claim 5, characterized in that: The electrically heated fuel preheating system further comprises an intelligent controller (6), and the gas-heated oil suction pipe (1), the electrically heated oil delivery pipe (2), the filter element heater (5) and the temperature sensor (3) are all electrically connected to the intelligent controller (6).

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