Combination oil tank fuel oil and water heating system

Abstract

The utility model discloses a combined oil tank fuel oil water heating system and belongs to the field of engine fuel oil supply systems. A water heating sensor and a liquid level display sensor are respectively fixed in the main oil tank and the auxiliary oil tank; the hot water inlet pipeline is communicated with a cooling water outlet of the engine through the water heating sensor; the hot water return pipeline is communicated with a water return port of the engine through the water heating sensor; the main oil inlet oil way is communicated with a main oil inlet of the change-over valve through the water heating sensor, and the main oil return oil way is communicated with a main oil return outlet of the change-over valve through the water heating sensor. A main oil outlet of the change-over valve is communicated with an engine oil inlet through an oil supply main oil way, and an engine oil return port is communicated with a main oil return inlet of the change-over valve through an oil return main oil way. One end of the oil supply path is communicated with a fuel inlet of the liquid level display sensor, the other end is communicated with an auxiliary oil supply inlet of the change-over valve, one end of the oil return path is communicated with a fuel outlet of the liquid level display sensor, and the other end is communicated with an auxiliary oil return outlet of the change-over valve. The oil supply device is used for supplying oil to the engine.

Description

Technical Field

[0001] The utility model belongs to the field of engine fuel supply, and in particular relates to a combined fuel tank fuel water heating system. Background Art

[0002] In cold seasons, the solidification of certain components in the fuel (especially diesel) blocks the fuel supply system, making it difficult to supply fuel to the engine normally. This makes it impossible for diesel-powered vehicles and equipment such as cars, ships, internal combustion locomotives, drilling rigs, etc. to start or operate normally, causing huge direct and indirect economic losses every year and bringing great inconvenience to people's travel.

[0003] At room temperature, diesel is a transparent liquid with low viscosity, good fluidity, good spray effect, and full combustion, resulting in low emissions and low fuel consumption. When the ambient temperature drops, diesel will produce paraffin crystals. At this time, the diesel will become turbid, the viscosity will increase, the fluidity and atomization effect will deteriorate, the combustion will be incomplete, the fuel consumption will increase, and the emission of smoke will increase. In severe cases, the solid paraffin precipitated from the diesel will cause the filter screens in various parts to be blocked, the fuel supply will be reduced or even stopped, and the engine will stall. Although drivers know that they should choose the appropriate brand of diesel according to the local ambient temperature, when the ambient temperature drops to a certain level, the brand of diesel used cannot change the fact that its low-temperature fluidity deteriorates. Experiments have shown that when the ambient temperature is below 4°C, proper heating of the diesel can not only improve its fluidity, optimize the spray quality, and make it easy to start, but also reduce smoke emissions, protect the engine, extend its service life, and save fuel. Utility Model Content

[0004] The utility model aims to solve the problem in the background technology that fuel (especially diesel) cannot normally supply fuel to the engine at low temperature, and provides a combined fuel tank fuel water heating system.

[0005] In view of the increasing demand for fuel heating, the utility model adopts a water heating sensor and a two-position three-way valve (conversion valve) which is mainly electric to realize the switching of the dual fuel tank oil circuits. It can reduce the fuel grade in a low temperature environment and effectively save costs.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A combined fuel tank fuel water heating system comprises a conversion valve, a water heating sensor, a liquid level display sensor, a switch valve and two fuel tanks, wherein the two fuel tanks are a main fuel tank and a subsidiary fuel tank;

[0008] A water heating sensor is fixed in the main fuel tank, and a liquid level display sensor is fixed in the auxiliary fuel tank. The cooling water inlet of the water heating sensor is connected with one end of the hot water inlet pipeline, and the cooling water outlet of the water heating sensor is connected with one end of the hot water return pipeline. The one end of the hot water inlet pipeline and the one end of the hot water return pipeline are connected with each other, and the other end of the hot water inlet pipeline is connected with the cooling water outlet of the engine, and the other end of the hot water return pipeline is connected with the return port of the engine; one end of the main oil inlet oil circuit is connected with the fuel inlet of the water heating sensor, and the other end of the main oil inlet oil circuit is connected with the main oil inlet of the conversion valve. One end of the main oil return oil circuit is connected with the fuel outlet of the water heating sensor, and the other end of the main oil return oil circuit is connected with the main return oil outlet of the conversion valve; the oil outlet of the conversion valve is connected with the engine oil inlet through the main oil supply circuit, and the engine oil return port is connected with the oil return inlet of the conversion valve through the main oil return circuit; one end of the oil supply oil circuit is connected with the fuel inlet of the liquid level display sensor, and the other end of the oil supply oil circuit is connected with the auxiliary oil supply inlet of the conversion valve, one end of the oil return oil circuit is connected with the fuel outlet of the liquid level display sensor, and the other end of the oil return oil circuit is connected with the auxiliary oil return outlet of the conversion valve; a switch valve is installed on the connecting pipeline between the main oil tank and the auxiliary oil tank.

[0009] Furthermore, a diesel filter is installed on the main oil supply line.

[0010] Furthermore, a main tank filter is provided in the main tank, an auxiliary tank filter is provided in the auxiliary tank, one end of the main oil inlet oil circuit is provided in the main tank filter, and one end of the oil supply oil circuit is provided in the auxiliary tank filter.

[0011] Furthermore, when the operating environment temperature is ≥3°C, the switch valve is opened, the two fuel tanks are connected, and both fuel tanks are filled with 0# diesel; when the operating environment temperature is <3°C, the switch valve is closed, the two fuel tanks are not connected, 0# diesel is added to the main fuel tank, and -35# diesel is added to the auxiliary fuel tank.

[0012] Furthermore, the water heating sensor is fixed on a step provided on the front side wall in the main oil tank, and the liquid level display sensor is fixed on a step provided on the front side wall in the auxiliary oil tank.

[0013] Furthermore, the conversion valve, the water heating sensor, and the liquid level display sensor are respectively connected to the controller signal.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Energy saving and consumption reduction, improving economic benefits: After the diesel-powered vehicle is equipped with this system, the diesel used in the engine can be reduced by at least one grade under the same conditions, that is, the -10# diesel, -20# diesel or -35# diesel can be replaced with 0# or -10# diesel. The cost can be saved by about 8%-10%. In the case of a full tank of fuel, the fuel cost saving is about 300 yuan.

[0016] -10# diesel: suitable for use in an environment with a minimum temperature above -5°C;

[0017] -20# diesel: suitable for use in an environment with a minimum temperature above -14°C;

[0018] -35# diesel: suitable for use in environments with a minimum temperature above -29°C.

[0019] 2. Extend the service life of diesel engines: The viscosity of diesel is reduced after heating, which not only enhances its fluidity, but also makes it easier for impurities in the diesel to precipitate and for oil and water to separate, thereby making the diesel supplied to the diesel engine injection system purer, reducing the wear of precision components of the diesel engine injection system and ensuring the service life of the diesel engine.

[0020] 3. Safe and reliable: The utility model uses the heat of the coolant (water) in the engine and water cooler to heat the diesel. There is no high-power electric heating element, and there is no fire hazard in heating. When the diesel in the main tank is lower than 5°C, the temperature sensor of the water heating sensor transmits the temperature signal to the controller. The controller controls the solenoid valve of the water heating sensor to open, and the cooling water is heated until the diesel temperature is higher than 25°C. The controller controls the solenoid valve of the water heating sensor to close and stop heating. The continuous heating will not cause the fuel to denature. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure in which the water heating sensor is installed in the main fuel tank, or the liquid level display sensor is installed in the auxiliary fuel tank;

[0023] Figure 3 yes Figure 2 A partial enlarged view of point A.

[0024] The names and reference numerals of the components involved in the figure are as follows:

[0025] Conversion valve 1, main oil tank 2, auxiliary oil tank 3, hot water inlet pipeline 4, hot water return pipeline 5, main oil inlet oil circuit 6, main oil return oil circuit 7, fuel supply main oil circuit 8, fuel supply oil circuit 9, return oil circuit 10, diesel filter 11, main oil tank filter 12, auxiliary oil tank filter 13, return oil main oil circuit 14, water heating sensor 15, liquid level display sensor 16, connecting pipeline 17, switch valve 18. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] Specific implementation method 1: Figure 1-Figure 3 As shown, this embodiment describes a combined fuel tank fuel water heating system, including a conversion valve 1, a water heating sensor 15, a liquid level display sensor 16, a switch valve 18 and two fuel tanks, the two fuel tanks are a main fuel tank 2 and a subsidiary fuel tank 3;

[0028] A water heating sensor 15 is fixed in the main oil tank 2, and a liquid level display sensor 16 is fixed in the auxiliary oil tank 3. The cooling water inlet of the water heating sensor 15 is connected to one end of the hot water inlet pipeline 4, and the cooling water outlet of the water heating sensor 15 is connected to one end of the hot water return pipeline 5. The one end of the hot water inlet pipeline 4 and the one end of the hot water return pipeline 5 are connected to each other, and the other end of the hot water inlet pipeline 4 is connected to the cooling water outlet of the engine, and the other end of the hot water return pipeline 5 is connected to the return port of the engine; one end of the main oil inlet oil circuit 6 is connected to the fuel inlet of the water heating sensor 15, and the other end of the main oil inlet oil circuit 6 is connected to the main oil inlet of the conversion valve 1, and one end of the main oil return oil circuit 7 is connected to the main oil inlet of the conversion valve 1. It is connected to the fuel outlet of the water heating sensor 15, and the other end of the main oil return oil circuit 7 is connected to the main return oil outlet of the conversion valve 1; the oil outlet of the conversion valve 1 is connected to the engine oil inlet through the main oil supply circuit 8, and the engine oil return port is connected to the return oil inlet of the conversion valve 1 through the main oil return circuit 14; one end of the oil supply circuit 9 is connected to the fuel inlet of the liquid level display sensor 16, and the other end of the oil supply circuit 9 is connected to the auxiliary oil supply inlet of the conversion valve 1, one end of the oil return circuit 10 is connected to the fuel outlet of the liquid level display sensor 16, and the other end of the oil return circuit 10 is connected to the auxiliary return oil outlet of the conversion valve 1; a switch valve 18 is installed on the connecting pipeline 17 between the main oil tank 2 and the auxiliary oil tank 3.

[0029] Furthermore, a diesel filter 11 is installed on the main oil supply passage 8 .

[0030] Furthermore, a main tank filter 12 is provided in the main tank 2, an auxiliary tank filter 13 is provided in the auxiliary tank 3, one end of the main oil inlet circuit 6 is provided in the main tank filter 12, and one end of the oil supply circuit 9 is provided in the auxiliary tank filter 13.

[0031] Furthermore, when the operating environment temperature is ≥3°C, the switch valve 18 is opened, the two fuel tanks are connected, and both fuel tanks are filled with 0# diesel; when the operating environment temperature is <3°C, the switch valve 18 is closed, the two fuel tanks are not connected, 0# diesel is added to the main fuel tank 2, and -35# diesel is added to the auxiliary fuel tank 3.

[0032] Furthermore, the water heating sensor 15 is fixed on a step provided on the front side wall in the main oil tank 2 , and the liquid level display sensor 16 is fixed on a step provided on the front side wall in the auxiliary oil tank 3 .

[0033] Furthermore, the conversion valve 1, the water heating sensor 15, and the liquid level display sensor 16 are respectively connected to the controller signal.

[0034] The working principle of the utility model is:

[0035] The heating system of the utility model uses the vehicle's own battery as a power source. When the vehicle is started in winter or in a low temperature environment, the controller controls the electromagnetic valve of the water heating sensor to open, and the cooling water is heated until the diesel temperature in the main fuel tank 2 is higher than 25°C, and the controller controls the electromagnetic valve of the water heating sensor to close and stop heating.

[0036] The heating system of the utility model is designed with a main and auxiliary fuel tank 3. The low-grade fuel in the auxiliary fuel tank 3 is used for engine starting, and the cooling water of the engine is used to heat the fuel in the main fuel tank 2; the high-grade fuel can be heated to supply fuel to the fuel supply system for normal driving.

[0037] The two-position three-way valve (conversion valve 1) for switching the oil circuits of the dual fuel tanks is mainly electrically driven. Without stopping the car, the driver can automatically switch the oil supply and return circuits of the main and auxiliary fuel tanks 3 by pressing a controller switch in the cab.

[0038] The heating system of the utility model has a return oil delay function, which can solve the problem of oil mixing between different brands of diesel in two tanks. When the vehicle switches from the main tank 2 (0# diesel) to the auxiliary tank 3 (-35# diesel), the conversion valve 1 first switches the oil supply oil circuit, and then switches the oil return oil circuit after a certain delay, so as to prevent the 0# diesel from flowing back from the engine's oil supply main oil circuit 8 to the engine's oil return main oil circuit 14 to the auxiliary tank 3 of -35# diesel, thereby causing oil mixing.

[0039] The operation method of the heating system of the utility model:

[0040] 1. Open the switch valves of the engine water inlet and return port;

[0041] 2. Switch the fuel switch (and the converter switch);

[0042] The #0 tank is the main tank 2 (large tank), and the #-35 tank is the auxiliary tank 3 (small tank). Power on the fuel system of the whole machine. At this time, the fuel system is in the access state. The fuel tank level displayed on the A-pillar instrument is the tank pointed to by the conversion valve 1 switch. The state of conversion valve 1 means that the inlet and return oil paths of the tank pointed to by its switch are both in the access state.

[0043] 3. Working status of conversion valve 1:

[0044] Taking the oil supply circuit from "main" to "auxiliary" as an example, the following is explained: when the main tank 2 is working, the main tank oil supply of the conversion valve 1 flows to the engine oil inlet, and the main tank return oil flows back to the main tank 2. When the operator presses the cab switch (i.e., the auxiliary tank 3 instruction), the controller starts to control the motor of the conversion valve 1 to rotate, the auxiliary tank oil supply channel (oil supply oil circuit 9) is opened, and the main tank oil supply channel (main oil inlet oil circuit 6) is closed, completing the switching of the oil supply channel from "main" to "auxiliary", and the state switching time is within 1s; at this time, the auxiliary tank 3 provides working fuel for the engine, the main tank return oil channel (main oil return oil circuit 7) continues to remain open, and the engine returns oil to the main tank 2. After a certain delay (i.e. to ensure that the main tank oil in the pipeline returns to the main tank 2), the auxiliary tank return oil channel (return oil channel 10) is opened, and the main tank return oil channel (main oil return oil channel 7) is closed, completing the switching of the return oil channel from "main" to "auxiliary", and the state switching time is within 1s; at this point, the conversion valve 1 completes the entire switching process from "auxiliary" to "main".

[0045] Similarly, when auxiliary tank 3 is transferred to main tank 2, the oil inlet circuit switch from auxiliary tank 3 to main tank 2 is completed first, and the oil return delay waits for a while before switching the oil return circuit from auxiliary tank 3 to main tank 2.

[0046] The manual operation controller sends an indication signal to the conversion valve 1, and the conversion valve 1 automatically switches to realize the oil circuit switching.

[0047] Factory setting: The oil return delay from "main" to "auxiliary" is 80s, and the oil return delay from "auxiliary" to "main" is 70s.

[0048] Delayed oil return requires a reserve of about 5L in the fuel tank to prevent oil return from overflowing.

[0049] 4. Usage scenario description:

[0050] After the whole machine is used, the fuel system uses high-grade fuel (main tank 2). 2-3 minutes before the engine is turned off, switch the fuel switch to the marked-35# tank (auxiliary tank 3), replace the diesel in the whole machine fuel system including the inlet and return oil pipelines, filter cup, and engine fuel system with low-grade diesel, and the engine can be turned off. After the second whole machine start (the fuel system uses high-grade fuel at this time), switch the fuel switch (i.e., conversion valve 1) when the whole machine runs for 20-25 minutes or the coolant (water meter) temperature reaches 78±2 degrees Celsius (the thermostat reaches the critical state of opening), restore the main tank 2 fuel oil circuit, and use high-grade diesel normally.

[0051] The functions of the water heating sensor 15 (purchased part) used in the present invention are as follows: ① providing instrument liquid level display; ② providing fuel inlet and outlet on the main fuel tank; ③ providing cooling water inlet and outlet on the main fuel tank; ④ the built-in temperature sensor outputs a signal to the solenoid valve of the water heating sensor itself, and controls its opening and closing in the range temperature.

[0052] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other forms of assembly without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalents of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0053] 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A combined fuel tank fuel water heating system, characterized in that: It comprises a conversion valve (1), a water heating sensor (15), a liquid level display sensor (16), a switch valve (18) and two oil tanks, the two oil tanks being a main oil tank (2) and an auxiliary oil tank (3); A water heating sensor (15) is fixed in the main oil tank (2), and a liquid level display sensor (16) is fixed in the auxiliary oil tank (3). The cooling water inlet of the water heating sensor (15) is connected to one end of the hot water inlet pipeline (4), and the cooling water outlet of the water heating sensor (15) is connected to one end of the hot water return pipeline (5). The one end of the hot water inlet pipeline (4) and the one end of the hot water return pipeline (5) are connected to each other, and the other end of the hot water inlet pipeline (4) is connected to the cooling water outlet of the engine, and the other end of the hot water return pipeline (5) is connected to the return port of the engine; one end of the main oil inlet oil circuit (6) is connected to the fuel inlet of the water heating sensor (15), and the other end of the main oil inlet oil circuit (6) is connected to the main oil inlet of the conversion valve (1), and one end of the main oil return oil circuit (7) is connected to the water inlet of the conversion valve (1). The fuel outlet of the heating sensor (15) is connected, and the other end of the main oil return oil circuit (7) is connected to the main oil return outlet of the conversion valve (1); the oil outlet of the conversion valve (1) is connected to the engine oil inlet through the main oil supply circuit (8), and the engine oil return port is connected to the oil return inlet of the conversion valve (1) through the main oil return circuit (14); one end of the oil supply circuit (9) is connected to the fuel inlet of the liquid level display sensor (16), and the other end of the oil supply circuit (9) is connected to the auxiliary oil supply inlet of the conversion valve (1); one end of the oil return circuit (10) is connected to the fuel outlet of the liquid level display sensor (16), and the other end of the oil return circuit (10) is connected to the auxiliary oil return outlet of the conversion valve (1); and a switch valve (18) is installed on the connecting pipeline (17) between the main oil tank (2) and the auxiliary oil tank (3).

2. A combined fuel tank fuel water heating system according to claim 1, characterized in that: A diesel filter (11) is installed on the main oil supply line (8).

3. A combined fuel tank fuel water heating system according to claim 1, characterized in that: A main oil tank filter (12) is arranged in the main oil tank (2), an auxiliary oil tank filter (13) is arranged in the auxiliary oil tank (3), one end of the main oil inlet oil path (6) is arranged in the main oil tank filter (12), and one end of the oil supply oil path (9) is arranged in the auxiliary oil tank filter (13).

4. A combined fuel tank fuel water heating system according to claim 1, characterized in that: When the operating environment temperature is ≥3°C, the switch valve (18) is opened, the two oil tanks are connected, and 0# diesel is added to the two oil tanks; when the operating environment temperature is <3°C, the switch valve (18) is closed, the two oil tanks are not connected, 0# diesel is added to the main oil tank (2), and -35# diesel is added to the auxiliary oil tank (3).

5. The combined fuel tank fuel water heating system according to claim 1, characterized in that: The water heating sensor (15) is fixed on a step provided on the front side wall inside the main oil tank (2), and the liquid level display sensor (16) is fixed on a step provided on the front side wall inside the auxiliary oil tank (3).

6. A combined fuel tank fuel water heating system according to claim 1, characterized in that: The conversion valve (1), the water heating sensor (15) and the liquid level display sensor (16) are respectively connected to the controller signal.

Images