Fuel temperature control heating device for track maintenance vehicle

Abstract

The utility model discloses track operation car fuel temperature control heating device relates to engine technical field, including diesel engine still includes the electric control system of realizing device automatic start -stop, the top of diesel engine is provided with the heat dissipation water tank, one side of diesel engine is provided with fuel tank, the top of fuel tank is fixedly connected with water circulation heat exchanger and is penetrated, the side of fuel tank close to diesel engine is penetrated and is communicated with oil supply pipeline, the other end of oil supply pipeline is penetrated and is communicated with diesel engine, the mid -segment of oil supply pipeline is penetrated and is communicated with the filter, the constant temperature heating ring is set up on the outer contour of filter, the oil way temperature increaser is set up on the outer contour of oil supply pipeline close to diesel engine one side and is penetrated, the utility model discloses through setting up water circulation heater and realizes fuel heating, through setting up constant temperature heating ring and oil way temperature increaser and realizing three -level combined heating, through setting up electric control system and realizing automatic start -stop.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, specifically to a fuel temperature control and heating device for rail work vehicles. Background Technology

[0002] Track maintenance vehicles are specialized engineering vehicles used for railway line construction, maintenance, and inspection. They typically carry various equipment and personnel to perform tasks such as stringing lines, laying tracks, emergency repairs, or overhead contact line maintenance on railway lines. They are important engineering equipment for ensuring the normal operation of railway infrastructure. In order to obtain strong independent power and ensure that heavy construction operations can be carried out in railway areas without power grid coverage, track maintenance vehicles are mostly diesel-powered.

[0003] In northern my country, low-pour-point diesel fuel, such as -10 and -20 diesel, is commonly used in winter, with pour points below -10℃ and -20℃ respectively. However, the production cost of low-pour-point diesel is high and its supply is limited. To reduce costs and make rational use of fuel resources in winter, a blending method is usually adopted, mixing -10 or -20 diesel with high-pour-point diesel in an appropriate proportion. However, this blending method results in poor fuel adaptability for railcars during long-distance transportation operations. Drivers need to use a fire to heat the engine oil lines to deal with the problem of oil pipes and filters being clogged due to diesel dewaxing, posing a significant safety hazard.

[0004] To ensure the normal start-up and operation of railcars under extremely cold conditions, a fuel heating device for railcars is proposed. A water circulation exchanger is installed inside the fuel tank, and the cooling water temperature from the engine radiator is used to raise the temperature of the fuel supply pipe, thereby preventing fuel waxing, improving the safety factor of the mechanical equipment, and reducing the operating cost of the railcar. Utility Model Content

[0005] The purpose of this invention is to provide a fuel temperature control and heating device for rail work vehicles, which has the advantages of temperature control heating and adaptive sealing, and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fuel temperature control and heating device for a rail-operated vehicle, including a diesel engine and an electronic control system for automatically starting and stopping the device. A radiator is provided above the diesel engine, and a fuel tank is provided on one side of the diesel engine. A water circulation exchanger is fixedly connected through the top of the fuel tank. A fuel supply pipeline is connected through the side of the fuel tank near the diesel engine. The other end of the fuel supply pipeline is connected through the diesel engine. A filter is connected through the middle section of the fuel supply pipeline. A constant temperature heating coil is provided on the outer contour of the filter. An oil circuit heater is installed through the outer contour of the fuel supply pipeline near the diesel engine.

[0007] Preferably, the top two sides of the water circulation exchanger are respectively connected by an inlet pipe and an outlet pipe, and the other ends of the inlet pipe and the outlet pipe are connected to the heat dissipation tank.

[0008] Preferably, a heating rod is fixedly connected to the bottom of the water circulation exchanger, and a filter is fixedly connected to the bottom of the heating rod. The heating rod and the filter are also penetrated by an inlet pipe and an outlet pipe.

[0009] Preferably, the inlet pipe is coiled inside the heating rod, and the outlet pipe is straight inside the heating rod. The inlet pipe and the outlet pipe are interconnected inside the filter.

[0010] Preferably, the inlet pipe and outlet pipe are combined with a filter and a cooling water tank to form a circulating water circuit.

[0011] Preferably, the electronic control system includes a fuel tank temperature sensor, an ambient temperature sensor, a relay, and a solenoid valve;

[0012] Fuel tank temperature sensor: Located inside the fuel tank and connected to the relay signal.

[0013] Ambient temperature sensor: installed on the outer wall of the fuel tank and connected to the relay signal;

[0014] Relay: Receives signals and controls the start / stop status of solenoid valves, constant temperature heating coils, and oil circuit heaters according to preset parameters;

[0015] Solenoid valve: Located inside the water circulation exchanger, it controls the flow status of the inlet and outlet water pipes.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model uses the waste heat of the cooling water in the engine radiator to heat the fuel by setting up a water circulation heater, which does not consume additional fuel, has high energy utilization rate and low operating cost;

[0018] 2. This utility model achieves three-stage combined heating by setting a constant temperature heating coil and an oil circuit heater, in conjunction with a water circulation exchanger. Through a safe and controllable heating method, it completely replaces the dangerous operation of heating the engine oil circuit with fire in the traditional way, fundamentally avoiding the risks of fire, explosion and burns to personnel.

[0019] 3. This utility model, by setting up an electronic control system, uses temperature sensors and solenoid valves to achieve automatic start and stop, avoiding human negligence and overheating, ensuring the stability and reliability of the heating process, and reducing the labor intensity of operators. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the main structure of the present utility model;

[0021] Figure 2 This is a schematic diagram of the fuel tank structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the water circulation exchanger of this utility model;

[0023] Figure 4 This is a schematic diagram of the oil supply pipeline of this utility model;

[0024] Figure 5 This is a flowchart illustrating the overall workflow of this utility model.

[0025] In the diagram: 1. Diesel engine; 2. Radiator; 3. Fuel tank; 31. Inlet pipe; 32. Outlet pipe; 4. Water exchanger; 41. Heating rod; 42. Filter; 5. Oil supply line; 6. Filter; 61. Thermostatic heating coil; 7. Oil circuit heater. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1:

[0028] Please see Figures 1 to 5 This utility model provides a technical solution: a fuel temperature control and heating device for a rail vehicle, including a diesel engine 1 and an electronic control system for automatic start and stop of the device. A radiator 2 is provided above the diesel engine 1, and a fuel tank 3 is provided on one side of the diesel engine 1. A water circulation exchanger 4 is fixedly connected through the top of the fuel tank 3. A fuel supply pipeline 5 is connected through the side of the fuel tank 3 near the diesel engine 1. The other end of the fuel supply pipeline 5 is connected through the diesel engine 1. A filter 6 is connected through the middle section of the fuel supply pipeline 5. A constant temperature heating coil 61 is provided on the outer contour of the filter 6. An oil circuit heater 7 is provided through the outer contour of the fuel supply pipeline 5 near the diesel engine 1.

[0029] In this scheme, the cooling system in the radiator 2 is used to dissipate heat from the diesel engine 1. The cooling principle is existing technology and will not be described in detail here. Then, the high-heat cooling water is introduced into the water circulation exchanger 4, and the fuel in the fuel supply line 5 is further heated through the water circulation exchanger 4. Then, the low-heat cooling water is introduced back into the radiator 2 to achieve the effect of recovering the waste heat of the cooling water and heating the fuel, thereby effectively preventing the fuel in the fuel tank 3 from waxing due to the low temperature.

[0030] On the other hand, the constant temperature heating coil 61 and the oil circuit heater 7 work together with the water circulation exchanger 4 to achieve three-stage combined heating, which further heats the fuel supply line 5 and the filter 6 in a targeted manner, thereby effectively preventing the fuel supply line 5 from freezing and the filter 6 from clogging due to fuel waxing in low temperature environments.

[0031] Example 2:

[0032] The top two sides of the water circulation exchanger 4 are respectively connected by an inlet pipe 31 and an outlet pipe 32, and the other ends of the inlet pipe 31 and the outlet pipe 32 are connected to the heat dissipation tank 2.

[0033] A heating rod 41 is fixedly connected to the bottom of the water circulation exchanger 4, and a filter 42 is fixedly connected to the bottom of the heating rod 41. The heating rod 41 and the filter 42 are also penetrated by the inlet pipe 31 and the outlet pipe 32.

[0034] The inlet pipe 31 is coiled inside the heating rod 41, and the outlet pipe 32 is straight inside the heating rod 41. The inlet pipe 31 and the outlet pipe 32 are interconnected inside the filter 42.

[0035] The inlet pipe 31 and outlet pipe 32 form a circulating water circuit by means of the filter 42 and the heat dissipation tank 2.

[0036] The electronic control system includes a fuel tank temperature sensor, an ambient temperature sensor, a relay, and a solenoid valve;

[0037] Fuel tank temperature sensor: Located inside fuel tank 3 and connected to the relay signal.

[0038] Ambient temperature sensor: installed on the outer wall of fuel tank 3 and connected to the relay signal;

[0039] Relay: Receives signals and controls the start / stop status of the solenoid valve, the constant temperature heating coil 61, and the oil circuit heater 7 according to preset parameters.

[0040] Solenoid valve: installed inside the water circulation exchanger 4 and controls the flow status of the inlet pipe 31 and the outlet pipe 32.

[0041] Taking a critical temperature of 5°C for fuel wax deposition as an example, the electronic control logic of the solution at this time is as follows: Figure 5 As shown, after the vehicle is started, the electronic control system first reads the ambient temperature through the ambient temperature sensor located on the outer wall of the fuel tank 3. If the ambient temperature is higher than 5°C, the system considers the risk of wax buildup to be low and remains in standby mode; if the ambient temperature is lower than 5°C, the electronic control system is activated and begins to continuously monitor the fuel tank temperature sensor.

[0042] In the initial state, the solenoid valve is in the off state, and the conduction state of the inlet pipe 31 and the outlet pipe 32 is blocked by the solenoid valve.

[0043] Furthermore, when the oil tank temperature drops to the preset point, there is a risk of wax formation. The relay determines that intervention is needed and simultaneously starts the three-stage combined heating. The solenoid valve, the constant temperature heating coil 61, and the oil circuit heater 7 start synchronously. At this time, the water inlet pipe 31 and the water outlet pipe 32 are simultaneously connected along with the start of the solenoid valve, and high-temperature cooling water enters the water inlet pipe 31 from the radiator tank 2.

[0044] When the high-temperature cooling water flows through the heating rod 41 in the inlet pipe 31, it is inside the fuel tank 3. Under the action of heat exchange, it transfers heat to the fuel in the fuel tank 3. At this time, the temperature of the fuel in the fuel tank 3 rises, the monitoring value of the fuel tank temperature sensor rises synchronously, and the temperature of the cooling water decreases synchronously.

[0045] After heat exchange, the low-temperature cooling water flows back to the radiator tank 2 through the outlet pipe 32, realizing the recovery of waste heat and cooling of the cooling water. At the same time, it heats the fuel in the fuel tank 3 to prevent waxing.

[0046] The coiled design of the water inlet pipe 31 within the heating rod 41 extends the residence time of the high-temperature cooling water at the heating rod 41, allowing the high-temperature cooling water to remain sufficiently within the fuel tank 3, thereby facilitating heat exchange between the cooling water and the fuel in the fuel tank 3 and improving the waste heat recovery efficiency of the cooling water.

[0047] Meanwhile, the straight pipe design of the outlet pipe 32 inside the heating rod 41 accelerates the return efficiency of the low-temperature cooling water after heat exchange, further improving the overall heat exchange efficiency of the water circuit.

[0048] At the same time, the constant temperature heating coil 61 heats the filter 6 and the fuel inside it to prevent the filter 6 from becoming clogged due to fuel waxing; the fuel line heater 7 heats the fuel supply line 5 to prevent the fuel in the fuel supply line 5 from freezing and reducing the fuel supply efficiency. This solution effectively addresses the problem of diesel fuel waxing through a multi-layered protection strategy of "overall preheating + key point insulation." The heating rod 41, working in conjunction with the water inlet pipe 31, achieves a global heating effect, preventing waxing in the fuel tank 3. Simultaneously, the constant-temperature heating coil 61 and the fuel line heater 7 provide localized heating, supplying targeted heat to the fuel supply line 5 and the filter 6 to prevent waxing at critical points. The electronic control system, composed of a fuel tank temperature sensor, an ambient temperature sensor, relays, and solenoid valves, forms the logical foundation of the solution. By comparing the current temperature with a preset value in real time, the system automatically starts and stops the temperature control function, achieving considerable overall heating efficiency. For example, with a fuel tank 3 containing 1000 liters of fuel, this solution only requires 10 minutes of heating to allow the diesel engine 1 to operate normally.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fuel temperature control and heating device for a railcar, comprising a diesel engine (1), characterized in that: It also includes an electronic control system for automatically starting and stopping the device. A radiator (2) is provided above the diesel engine (1). A fuel tank (3) is provided on one side of the diesel engine (1). A water exchanger (4) is fixedly connected through the top of the fuel tank (3). A fuel supply line (5) is connected through the side of the fuel tank (3) near the diesel engine (1). The other end of the fuel supply line (5) is connected through the diesel engine (1). A filter (6) is connected through the middle section of the fuel supply line (5). A constant temperature heating coil (61) is provided on the outer contour of the filter (6). An oil circuit heater (7) is provided through the outer contour of the fuel supply line (5) near the diesel engine (1).

2. The fuel temperature control and heating device for railcars according to claim 1, characterized in that: The top two sides of the water circulation exchanger (4) are respectively connected by an inlet pipe (31) and an outlet pipe (32), and the other ends of the inlet pipe (31) and the outlet pipe (32) are connected to the heat dissipation tank (2).

3. The fuel temperature control and heating device for rail work vehicles according to claim 1, characterized in that: A heating rod (41) is fixedly connected to the bottom end of the water circulation exchanger (4), and a filter (42) is fixedly connected to the bottom end of the heating rod (41). The heating rod (41) and the filter (42) are also penetrated by the inlet pipe (31) and the outlet pipe (32).

4. The fuel temperature control and heating device for railcars according to claim 3, characterized in that: The inlet pipe (31) is coiled inside the heating rod (41), and the outlet pipe (32) is straight inside the heating rod (41). The inlet pipe (31) and the outlet pipe (32) are interconnected inside the filter (42).

5. The fuel temperature control and heating device for rail work vehicles according to claim 3, characterized in that: The inlet pipe (31) and outlet pipe (32) form a circulating water circuit by means of a filter (42) and a heat dissipation tank (2).

6. The fuel temperature control and heating device for railcars according to claim 1, characterized in that: The electronic control system includes a fuel tank temperature sensor, an ambient temperature sensor, a relay, and a solenoid valve; Fuel tank temperature sensor: installed inside the fuel tank (3) and connected to the relay signal. Ambient temperature sensor: installed on the outer wall of the fuel tank (3) and connected to the relay signal; Relay: Receives signals and controls the start and stop states of the solenoid valve, the constant temperature heating coil (61), and the oil circuit heater (7) according to preset parameters; Solenoid valve: installed inside the water circulation exchanger (4) and controls the flow status of the inlet pipe (31) and outlet pipe (32).

Images