Excavator fuel oil system with cooling liquid heating device and excavator
By introducing a coolant heating device with coolant into the excavator fuel system and simplifying the design of the fuel route, the problems of insufficient preheating function of the excavator and large oil inlet resistance in the extremely cold areas are solved, and effective preheating of the engine and improving fuel supply efficiency are achieved.
Patent Information
- Application Number
- CN202421752426.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-23
AI Technical Summary
In extremely cold areas, the preheating function of the excavator relies on the intake preheating flap, with high failure rate and fragments easily entering the piston, resulting in an increase in the failure rate; at the same time, the fuel system has a large oil inlet resistance, resulting in poor engine oil supply, high fuel consumption and poor economy.
An excavator fuel system with a coolant heating device is designed, and the engine is preheated by heating with coolant through the fuel heating device. By simplifying the oil inlet and oil return routes, the use of fuel electromagnetic pumps is reduced, and fuel oil supply resistance and energy loss are reduced.
Realize effective preheating of the engine in low temperature environments, reduce failure rate, improve fuel supply efficiency, reduce fuel consumption, and improve economic benefits.
Smart Images
Figure CN222835868U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engineering machinery, in particular to an excavator fuel system with a coolant heating device and an excavator. Background Art
[0002] Winters are long in northern my country and Russia, with ambient temperatures as low as -60°C. Large excavators are difficult to start in extremely cold regions. The current mainstream preheating function is achieved by heating the air at the engine intake, that is, the engine's own intake preheating function. However, the intake preheating plate has a high failure rate. When the intake preheating plate is damaged, the debris can easily enter the piston and cause cylinder pulling, which increases the failure rate of the excavator.
[0003] The existing large excavator fuel pipeline is long and complex, the engine fuel supply is not smooth, the fuel system has large oil inlet resistance, and the installed fuel electromagnetic pump makes the engine fuel exhaust time and path too long, the pipeline is complex, the fuel oil circuit energy loss is high, the engine fuel consumption is high, and the economy is poor. Utility Model Content
[0004] In view of the above-mentioned defects in the prior art, the purpose of the utility model is to provide an excavator fuel system and an excavator with a coolant heating device.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] On the one hand, the utility model provides an excavator fuel system with a coolant heating device, comprising a fuel tank and an engine, characterized in that the fuel tank is connected to the engine through a fuel processing line; it also includes a fuel heating device, and the fuel inlet of the fuel heating device is connected to the fuel processing line; the fuel heating device is provided with a water outlet pipe, a water inlet pipe, and a heat exchange pipe, the heat exchange pipe is located inside the fuel heating device, and the two ends of the heat exchange pipe are respectively connected to the water outlet pipe and the water inlet pipe, the water inlet pipe is connected to the engine lower water pipe through a water pump, and the water outlet pipe is connected to the engine upper water pipe.
[0007] Furthermore, the fuel processing line includes an oil inlet line and an oil return line;
[0008] Specifically, the fuel inlet line includes a fuel tank, a first fuel inlet pipe, a first fuel three-way joint, a second fuel inlet pipe, an oil-water separator, a third fuel inlet pipe, a fuel coarse filter, and an engine fuel inlet port, which are connected in sequence;
[0009] Specifically, the oil return line includes an engine oil return port, a first fuel oil return pipe, a second fuel three-way joint, a second fuel oil return pipe, a fuel radiator, a third fuel oil return pipe, and a fuel tank which are connected in sequence.
[0010] Furthermore, the fuel heating device is connected to the first fuel three-way joint through a fourth fuel inlet pipe and a fifth fuel inlet pipe;
[0011] Specifically, the fuel heating device is connected to the second fuel three-way joint through the fourth fuel return pipe and the fifth fuel return pipe;
[0012] Specifically, the fourth fuel inlet pipe and the fifth fuel inlet pipe, and the fourth fuel return pipe and the fifth fuel return pipe are connected via a ball valve and a clamp.
[0013] Further, the first fuel inlet pipe is connected to the bottom of the fuel tank, and the third fuel return pipe is connected to the top of the fuel tank;
[0014] Specifically, an interface flange is provided at the bottom of the fuel tank, and two valve interfaces are provided on the interface flange. The first fuel inlet pipe is connected to a valve interface of the interface flange, and the interface flange is provided with a pipe clamp for assisting the connection of other fuel pipelines.
[0015] Furthermore, the oil-water separator is driven by an electronic pump, and the fuel radiator is a fin radiator.
[0016] In a second aspect, the utility model provides an excavator, including a rotating platform, and also including an excavator fuel system with a coolant heating device as described in the first aspect, wherein the excavator fuel system is fixedly arranged on the rotating platform.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] 1. The excavator fuel system with a coolant heating device in the utility model can realize engine preheating and maintain starting performance in a low temperature environment.
[0019] 2. The fuel electromagnetic pump is not connected to the oil inlet and oil return lines of the utility model, which greatly saves the length of the fuel supply pipeline, reduces the oil inlet resistance of the engine, reduces energy loss, and improves economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 The utility model is a structural schematic diagram of an excavator fuel system with a coolant heating device.
[0021] In the figure: 1. First fuel inlet pipe; 2. Single-head strong clamp; 3. Fuel tee joint; 4. Second fuel inlet pipe; 5. Pipe clamp; 6. First gasket; 7. First bolt; 8. Oil-water separator joint; 9. Oil-water separator; 10. Oil-water separator mounting plate; 11. Third fuel inlet pipe; 12. First fuel return pipe; 13. Second fuel return pipe; 14. Fuel radiator joint; 15. Third fuel return pipe; 16. Second bolt; 17. Second gasket; 18. Third bolt; 19. Fuel coarse filter; 20. Fuel tank; 21. Fuel radiator; 22. Engine oil return port; 23. Engine oil inlet port; 24. Fuel heating device; 25. Fourth fuel inlet pipe; 26. Fifth fuel inlet pipe; 27. Fourth fuel return pipe; 28. Fifth fuel return pipe; 29. Ball valve; 30. Clamp; 31. Water outlet pipe; 32. Water inlet pipe; 33. Fuel three-way joint; 34. Rotating platform. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Embodiment 1:
[0024] See also Figure 1 The utility model provides an excavator fuel system with a coolant heating device, comprising a fuel tank 20, a fuel heating device 24, an oil-water separator 9, a fuel coarse filter 19, a fuel radiator 21, an engine, and a fuel delivery pipeline. The engine is provided with an engine oil return port 22 and an engine oil inlet 23.
[0025] The fuel delivery pipeline includes a first fuel three-way joint 3, a second fuel three-way joint 3, a first fuel inlet pipe 1, a second fuel inlet pipe 4, a third fuel inlet pipe 11, a fourth fuel inlet pipe 25, a fifth fuel inlet pipe 26, a first fuel return pipe 12, a second fuel return pipe 13, a third fuel return pipe 15, a fourth fuel return pipe 27, and a fifth fuel return pipe 28.
[0026] Among them, the fuel tank 20 is connected to one port of the first fuel three-way joint 1 through the first fuel inlet pipe 1, the second port of the first fuel three-way joint 1 is connected to the fuel heating device 24 through the fourth fuel inlet pipe 25 and the fifth fuel inlet pipe 26, and the three-way port of the first fuel three-way joint 1 is connected to the oil-water separator 9 through the second fuel inlet pipe 4.
[0027] The oil-water separator 9 is connected to the fuel coarse filter 19 via a third fuel inlet pipe 11, and the fuel coarse filter 19 is connected to the engine fuel inlet 23 via an oil delivery pipeline.
[0028] Among them, the engine oil return port 22 is connected to one port of the second fuel three-way joint 33 through the first fuel return pipe 12, the second port of the second fuel three-way joint 33 is connected to the fuel radiator 21 through the second fuel return pipe 13, and the three-way port of the second fuel three-way joint 33 is connected to the fuel heating device 24 through the fourth fuel return pipe 27 and the fifth fuel return pipe 28.
[0029] The fuel radiator 21 is connected to the fuel tank 20 via the third fuel return pipe 15 .
[0030] Among them, the fuel heating device 24 is provided with a water outlet pipe 31, a water inlet pipe 32, and a heat exchange pipe. The heat exchange pipe is located inside the fuel heating device 24, and the two ends of the heat exchange pipe are respectively connected to the water outlet pipe 31 and the water inlet pipe 32. The water inlet pipe 32 is connected to the lower water pipe of the engine through a water pump, and the water outlet pipe 32 is connected to the upper water pipe of the engine; the water pump pumps the antifreeze at the bottom of the engine into the fuel heating device 24, and the antifreeze is input into the upper water pipe of the engine after heating.
[0031] Specifically, the first fuel inlet pipe 1 is connected to the bottom of the fuel tank 20, the third fuel return pipe 15 is connected to the top of the fuel tank 20, an interface flange is provided at the bottom of the fuel tank 20, and two valve interfaces are provided on the interface flange. The interface flange is connected to the bottom of the fuel tank 20 through a first bolt 7 and a first gasket 6. The first fuel inlet pipe 1 is connected to a valve interface of the interface flange, and the interface flange is provided with a pipe clamp 5 for assisting the connection of other fuel pipelines.
[0032] Specifically, the second fuel inlet pipe 4 and the third fuel inlet pipe 11 are connected to the oil-water separator 9 through the oil-water separator joint 8, the oil-water separator 9 is connected to the oil-water separator mounting plate 10 through the third bolt 18 and the second washer 17, and the oil-water separator mounting plate 10 is connected to the rotating platform 34 through the second bolt 16.
[0033] Specifically, the oil-water separator 9 is driven by an electronic pump, and an electric heating coil and a water level alarm are provided. The oil-water separator 9 of the utility model is not connected to an external fuel electromagnetic pump, which greatly saves the length of the fuel supply pipeline, reduces the oil inlet resistance of the engine, reduces energy loss, and improves economic benefits.
[0034] Specifically, the fourth fuel inlet pipe 25 and the fifth fuel inlet pipe 26, and the fourth fuel return pipe 27 and the fifth fuel return pipe 28 are connected via a ball valve 29 and a clamp 30. The ball valve 29 is used to control the fuel supply amount and the heating heat.
[0035] Specifically, the first fuel three-way connector 3 and the second fuel three-way connector 3 are both connected to the pipeline through a single-head strong clamp 2.
[0036] Specifically, the fuel radiator 21 is connected to the second fuel return pipe 13 and the third fuel return pipe 15 through a fuel radiator joint 14, and the fuel radiator 21 is a fin radiator.
[0037] Specifically, the fuel heating device 24 is fixed on the excavator rotary platform 34 .
[0038] It should be noted that the structure of the fuel heating device 24 for combustion heating, the structure of the oil-water separator 9 for separation, the fuel coarse filter 19, the fuel radiator 21, and the engine itself belong to the prior art, and those skilled in the art are clear about their structures.
[0039] Embodiment 2:
[0040] Based on Example 1, an excavator fuel system with a coolant heating device is applied to the excavator, and the pipeline flow in the excavator is as follows:
[0041] Fuel inlet circuit: fuel tank 20, first fuel inlet pipe 1, first fuel three-way joint 3, second fuel inlet pipe 4, oil-water separator 9, third fuel inlet pipe 11, fuel coarse filter 19, engine fuel inlet 23;
[0042] Oil return circuit: engine oil return port 22, first fuel oil return pipe 12, second fuel three-way joint 33, second fuel oil return pipe 13, fuel radiator 21, third fuel oil return pipe 15, fuel tank 20;
[0043] Preheating oil circuit: the first fuel three-way joint 3, the fourth fuel inlet pipe 25, and the fifth fuel inlet pipe 26 supply fuel to the fuel heating device 24; the second fuel three-way joint 33, the fourth fuel return pipe 27, and the fifth fuel return pipe 28 supply fuel to the fuel heating device 24; the low-temperature antifreeze introduced by the heating water inlet pipe 32 is discharged into the engine antifreeze tank through the water outlet pipe 31 after heating, and the amount of fuel entering is controlled by the ball valve 29.
[0044] The utility model realizes engine preheating and maintains starting performance in a low temperature environment.
[0045] All components and connection methods of components not discussed in this application belong to the known technologies in this technical field and can be directly applied without further explanation.
[0046] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0047] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.
[0048] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0049] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. An excavator fuel system with a coolant heating device, comprising a fuel tank and an engine, characterized in that: The fuel tank is connected to the engine via a fuel processing line; It also includes a fuel heating device, wherein the fuel inlet of the fuel heating device is connected to the fuel processing line; The fuel heating device is provided with a water outlet pipe, a water inlet pipe and a heat exchange pipe. The heat exchange pipe is located inside the fuel heating device. Both ends of the heat exchange pipe are respectively connected to the water outlet pipe and the water inlet pipe. The water inlet pipe is connected to the lower water pipe of the engine through a water pump, and the water outlet pipe is connected to the upper water pipe of the engine.
2. The excavator fuel system with a coolant heating device according to claim 1, characterized in that: The fuel processing line includes an oil inlet line and an oil return line; The fuel inlet line includes a fuel tank, a first fuel inlet pipe, a first fuel three-way joint, a second fuel inlet pipe, an oil-water separator, a third fuel inlet pipe, a fuel coarse filter, and an engine fuel inlet port which are connected in sequence; The oil return line includes an engine oil return port, a first fuel oil return pipe, a second fuel three-way joint, a second fuel oil return pipe, a fuel radiator, a third fuel oil return pipe, and a fuel tank which are connected in sequence.
3. The excavator fuel system with a coolant heating device according to claim 2, characterized in that: The fuel heating device is connected to the first fuel three-way joint through a fourth fuel inlet pipe and a fifth fuel inlet pipe; The fuel heating device is connected to the second fuel three-way joint through the fourth fuel return pipe and the fifth fuel return pipe; The fourth fuel inlet pipe and the fifth fuel inlet pipe, and the fourth fuel return pipe and the fifth fuel return pipe are connected via ball valves and clamps.
4. The excavator fuel system with a coolant heating device according to claim 2, characterized in that: The first fuel inlet pipe is connected to the bottom of the fuel tank, and the third fuel return pipe is connected to the top of the fuel tank; An interface flange is provided at the bottom of the fuel tank, and two valve interfaces are provided on the interface flange. The first fuel inlet pipe is connected to a valve interface of the interface flange, and the interface flange is provided with a pipe clamp for assisting the connection of other fuel pipelines.
5. The excavator fuel system with a coolant heating device according to claim 2, characterized in that: The oil-water separator is driven by an electronic pump, and the fuel radiator is a fin radiator.
6. An excavator, comprising a slewing platform, characterized in that: It also includes an excavator fuel system with a coolant heating device as described in claim 3, and the excavator fuel system is fixedly arranged on a rotating platform.