Mining dump truck warm air and fuel preheating circulating system suitable for high and cold environment

Abstract

The utility model discloses a warm air and fuel preheating circulating system of a mining dump truck suitable for a high and cold environment, and belongs to the field of off-highway dump trucks. The device is composed of a double-cavity fuel tank, a first L-shaped three-way ball valve, a second L-shaped three-way ball valve, a heat exchanger, a first fuel quantity sensor, a second fuel quantity sensor, a fuel taking connector, a fuel heater, a fan heater, a first three-way connector, a second three-way connector, a first ball valve, a second ball valve, a cab rocker switch, a fuel pipe and a high-temperature water pipe. Multiple functions of vehicle high-cold environment starting, fuel oil heating in the fuel tank and switching of two heat circulation systems are integrated, and the problems that the fuel oil heater continuously heats the fuel oil in the fuel tank, so that the oil temperature is too high, and the warm air temperature is insufficient when a driver has a rest in the vehicle at night in the high-cold environment are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mining dump truck technical field, specifically is a kind of mining dump truck warm air and fuel preheating circulation system suitable for high-cold environment. TECHNICAL BACKGROUND

[0002] In order to prevent the oil supply system from waxing in cold temperature, and avoid the engine from being extinguished due to the too low oil temperature, more and more mining dump trucks are equipped with fuel heaters, and the water pipe line of the existing fuel heater generally adopts the series connection mode of oil tank heat exchanger and air heater. Under the working condition of high-cold environment, when the oil temperature of the oil tank is low, the hot water of the fuel heater is heat-exchanged through the heat exchanger, and the water temperature is reduced. When the low-temperature water enters the air heater, the air heating capacity of the air heater is generally insufficient. For high-cold areas, the driver will keep the fuel heater on to improve the air heating capacity of the air heater when the temperature is extremely low at night. However, long-time opening of the fuel heater will cause the temperature of diesel oil in the fuel tank to be too high and the risk of expansion of the fuel tank due to high-temperature gas. SUMMARY

[0003] The utility model discloses a mining dump truck warm air and fuel preheating circulation system suitable for high-cold environment, which can ensure the normal starting and running of the mining dump truck under the working condition of extremely cold environment, and solve the problems of insufficient air heating capacity in the cab and excessive heating of diesel oil in the fuel tank.

[0004] The utility model provides a technical scheme of a mining dump truck warm air and fuel preheating circulation system suitable for high-cold environment, which is characterized by comprising a double-cavity fuel tank, a first L-shaped three-way ball valve, a second L-shaped three-way ball valve, a heat exchanger, a first oil quantity sensor, a second oil quantity sensor, an oil taking connector, a fuel heater, an air heater, a first three-way connector, a second three-way connector, a first ball valve, a second ball valve, a cab tilting plate switch, a fuel pipe, a high-temperature water pipe, an oil taking pipe and an engine.

[0005] The dual-chamber fuel tank is equipped with a heat exchanger, a first fuel level sensor, a second fuel level sensor, and a fuel inlet connector. The fuel outlets of the heat exchanger and the second fuel level sensor are connected to the engine fuel inlet via a first L-shaped three-way ball valve and a fuel pipe. The fuel return ports of the first and second fuel level sensors are connected to the engine fuel return port via a second L-shaped three-way ball valve and a fuel pipe. The fuel inlet connector on the dual-chamber fuel tank is connected to the fuel heater via a fuel inlet pipe. The water inlet of the fuel heater is connected to the engine water outlet via a high-temperature water pipe. The water outlet of the fuel heater, the water inlet and outlet of the heat exchanger, and the water inlet of the heater are connected via a first three-way connector, a second three-way connector, a first ball valve, a second ball valve, and a high-temperature water pipe. The water outlet of the heater is connected to the engine water inlet via a high-temperature water pipe. The cab rocker switch controls the opening and closing of the fuel heater.

[0006] Furthermore, the first tee connector is connected to the outlet of the fuel heater, the inlet of the first ball valve, and the inlet of the second ball valve via high-temperature water pipes.

[0007] Furthermore, the outlet of the first ball valve is connected to the inlet of the heat exchanger via a high-temperature water pipe.

[0008] Furthermore, the second three-way connector is connected to the outlet of the second ball valve, the outlet of the heat exchanger, and the inlet of the heater via high-temperature water pipes.

[0009] The beneficial effects of this utility model are as follows: 1. By manually operating two L-shaped three-way ball valves, the engine can switch between drawing fuel from the left and right chambers of the dual-chamber fuel tank. In extremely cold conditions, the engine uses the low-grade diesel fuel from the right chamber of the fuel tank for low-temperature starting, and after the engine starts, it uses the heated high-grade diesel fuel from the left chamber of the fuel tank, ensuring the normal starting and operation of the mining dump truck in extremely cold environments; 2. By manually operating the opening and closing of the two ball valves, the driver can improve the heating capacity of the heater by turning on the fuel heater at night in extremely cold environments, while avoiding the risk of excessively high diesel fuel temperature in the left chamber of the fuel tank due to prolonged operation of the fuel heater, which could lead to gas expansion inside the fuel tank. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structural connection of this utility model.

[0011] In the diagram: 1 Dual-chamber fuel tank, 2 First L-type three-way ball valve, 3 Second L-type three-way ball valve, 4 Heat exchanger, 5 First fuel level sensor, 6 Second fuel level sensor, 7 Fuel tap connector, 8 Fuel heater, 9 Heater, 10 First three-way connector, 11 Second three-way connector, 12 First ball valve, 13 Second ball valve, 14 Cab rocker switch, 15 Fuel pipe, 16 High-temperature water pipe, 17 Fuel tap pipe, 18 Engine. Detailed Implementation

[0012] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings.

[0013] like Figure 1 As shown, a heating and fuel preheating circulation system for a mining dump truck suitable for cold environments consists of a dual-chamber fuel tank 1, a first L-shaped three-way ball valve 2, a second L-shaped three-way ball valve 3, a heat exchanger 4, a first fuel level sensor 5, a second fuel level sensor 6, a fuel inlet connector 7, a fuel heater 8, a heater 9, a first three-way connector 10, a second three-way connector 11, a first ball valve 12, a second ball valve 13, a cab rocker switch 14, a fuel pipe 15, a high-temperature water pipe 16, a fuel inlet pipe 17, and an engine 18.

[0014] Heat exchanger 4, first fuel level sensor 5, second fuel level sensor 6, and fuel inlet connector 7 are installed on dual-chamber fuel tank 1. The fuel outlets of heat exchanger 4 and second fuel level sensor 6 are connected to the fuel inlet of engine 18 through first L-shaped three-way ball valve 2 and fuel line 15. The fuel return ports of first fuel level sensor 5 and second fuel level sensor 6 are connected to the fuel return port of engine 18 through second L-shaped three-way ball valve 3 and several fuel lines 15. The two L-shaped three-way ball valves can control the engine to switch between fuel intake and return from the left and right chambers of the fuel tank.

[0015] The oil tap 7 on the dual-chamber fuel tank 1 is connected to the fuel heater 8 via the oil tap 17; the cab rocker switch 14 controls the opening and closing of the fuel heater 8. When the fuel heater 8 is turned on, it can draw oil from the right chamber of the fuel tank and burn it, thereby raising the temperature of the water flowing through the fuel heater 8.

[0016] The inlet of the fuel heater 8 is connected to the outlet of the engine 18 via a high-temperature water pipe 16, and the outlet of the heater 9 is connected to the inlet of the engine 18 via a high-temperature water pipe 16. The outlet of the fuel heater 8, the inlet and outlet of the heat exchanger 4, and the outlet of the heater 9 are connected via a first tee connector 10, a second tee connector 11, a first ball valve 12, a second ball valve 13, and several high-temperature water pipes 16, so that the entire water pipeline forms a manually adjustable circulation system.

[0017] Preferably, the first tee connector 10 is connected to the outlet of the fuel heater 8, the inlet of the first ball valve 12, and the inlet of the second ball valve 13 via a high-temperature water pipe 16; the outlet of the first ball valve 12 is connected to the inlet of the heat exchanger 4 via a high-temperature water pipe 16; and the second tee connector 11 is connected to the outlet of the second ball valve 13, the outlet of the heat exchanger 4, and the inlet of the heater 9 via a high-temperature water pipe 16.

[0018] This utility model discloses a heating and fuel preheating circulation system for mining dump trucks suitable for cold environments. When the first ball valve 12 is opened and the second ball valve 13 is closed, the hot water from the outlet of the engine 18 is heated by the fuel heater 8 and then enters the heat exchanger 4 for heat exchange before entering the heater 9. Finally, it returns to the inlet of the engine 18, completing a heating and fuel preheating hot water circulation system. This circulation system can heat the diesel fuel in the left chamber of the dual-chamber fuel tank 1 in cold environments until it meets the normal operating requirements of the engine 18. When the first ball valve 12 is closed and the second ball valve 13 is opened, the hot water from the outlet of the engine 18 is heated by the fuel heater 8 and then directly enters the heater 9 before returning to the inlet of the engine 18. This completes a circulation system in which the fuel heater 8 heats the water in the heater 9 independently. This circulation system improves the heating capacity of the heater 9 and prevents the risk of overheating the diesel fuel in the left chamber of the dual-chamber fuel tank 1.

[0019] It should be understood that any technical features not elaborated in detail in this specification belong to the prior art. Although the embodiments of this patent have been described, this patent is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this patent without departing from the spirit and scope of protection of the claims, and these all fall within the scope of protection of this patent.

Claims

1. A heating and fuel preheating circulation system for mining dump trucks suitable for cold environments, characterized in that, It consists of a dual-chamber fuel tank (1), a first L-type three-way ball valve (2), a second L-type three-way ball valve (3), a heat exchanger (4), a first fuel level sensor (5), a second fuel level sensor (6), a fuel tap (7), a fuel heater (8), a heater (9), a first three-way connector (10), a second three-way connector (11), a first ball valve (12), a second ball valve (13), a cab rocker switch (14), a fuel pipe (15), a high-temperature water pipe (16), a fuel tap (17), and an engine (18). The dual-chamber fuel tank (1) is equipped with a heat exchanger (4), a first fuel level sensor (5), a second fuel level sensor (6), and a fuel inlet connector (7). The fuel outlets of the heat exchanger (4) and the second fuel level sensor (6) are connected to the fuel inlet of the engine (18) via a first L-shaped three-way ball valve (2) and a fuel pipe (15). The fuel return ports of the first fuel level sensor (5) and the second fuel level sensor (6) are connected to the fuel return port of the engine (18) via a second L-shaped three-way ball valve (3) and a fuel pipe (15). The fuel inlet connector (7) on the dual-chamber fuel tank (1) is connected to the fuel heater via a fuel inlet pipe (17). (8) Connection; the inlet of the fuel heater (8) is connected to the outlet of the engine (18) through a high-temperature water pipe (16); the outlet of the fuel heater (8), the inlet and outlet of the heat exchanger (4) and the inlet of the heater (9) are connected through a first tee connector (10), a second tee connector (11), a first ball valve (12), a second ball valve (13) and a high-temperature water pipe (16); the outlet of the heater (9) is connected to the inlet of the engine (18) through a high-temperature water pipe (16); the cab rocker switch (14) controls the opening and closing of the fuel heater (8).

2. The heating and fuel preheating circulation system for mining dump trucks suitable for cold environments according to claim 1, characterized in that, The first three-way connector (10) is connected to the outlet of the fuel heater (8), the inlet of the first ball valve (12), and the inlet of the second ball valve (13) via a high-temperature water pipe (16).

3. The heating and fuel preheating circulation system for mining dump trucks suitable for cold environments according to claim 1, characterized in that, The outlet of the first ball valve (12) is connected to the inlet of the heat exchanger (4) via a high-temperature water pipe (16).

4. A heating and fuel preheating circulation system for mining dump trucks suitable for cold environments, as described in claim 1, is characterized in that... The second three-way connector (11) is connected to the outlet of the second ball valve (13), the outlet of the heat exchanger (4), and the inlet of the heater (9) via a high-temperature water pipe (16).

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