A preheating system, method and walking power station for a walking power station

Abstract

The present invention discloses a preheating system, method and walking power station, belonging to the technical field of engineering machinery equipment. The preheating system includes an engine, an engine water tank, a fuel heater, a distribution valve, a fuel tank and a plurality of heating actuators. The engine is connected to the engine water tank; the second water outlet of the engine is connected to the water inlet of the fuel heater through a first ball valve; the water outlet of the fuel heater is connected to the first cavity of the distribution valve, and the first cavity is connected to the heating actuators; the water outlets of the heating actuators are connected to the second cavity, and the water outlet of the second cavity of the distribution valve is connected to the first water return port through a second ball valve; the oil outlet of the fuel tank is respectively connected to the oil suction port of the fuel heater and the oil inlet of the engine through a tee. The method is based on the provided preheating system, and the walking power station uses the provided system and method for preheating. The present invention has good preheating effect, good versatility, safety and reliability.

Description

Technical Field

[0001] The present invention belongs to the field of engineering machinery and equipment, and in particular relates to a preheating system and method for a traveling power station and the traveling power station. Background Art

[0002] Travel power packs provide auxiliary hydraulic power for construction machinery such as open-pit drills and are widely used in complex operating environments. Currently, travel power packs are also being used in high-altitude and extremely cold regions. In these regions, due to the extremely low temperatures, the relative charge of the battery in the travel power pack decreases, significantly reducing discharge performance. Oils such as engine oil, fuel, and hydraulic oil also become more viscous due to the drop in temperature, increasing resistance between friction pairs. Furthermore, the hydraulic system on the flywheel side of the engine has a considerable starting load, making it very easy for the engine to start in low-temperature conditions.

[0003] Existing technologies often use low-temperature-resistant fuel, engine oil, and hydraulic oil, add thermal insulation and windproof design to batteries, use flames to heat the oil pan, and inject ether when starting the engine as auxiliary measures. While these methods have some effect, the preheating effect is not ideal and also poses significant safety risks. Summary of the Invention

[0004] Technical problem: The present invention provides a preheating system and method for a walking power station with good preheating effect, good versatility, safety and reliability, as well as a walking power station using the provided system and method, which can preheat various components of the walking power station in high-altitude and extremely cold areas.

[0005] Technical solution: On the one hand, the present invention provides a preheating system for a traveling power station, comprising: an engine, an engine water tank, a fuel heater, a distribution valve, a fuel tank, and a plurality of heating actuators, wherein the engine comprises at least a first water inlet, a first water outlet, a first water return port, and a second water outlet; the distribution valve comprises at least a first cavity and a second cavity;

[0006] The first water inlet is connected to the water outlet of the engine water tank, and the first water outlet is connected to the water return port of the engine water tank; the second water outlet is connected to the water inlet of the fuel heater through a first ball valve; the water outlet of the fuel heater is connected to the water inlet of the first cavity, and the water outlet of the first cavity is connected to the heating actuator; the water outlet of each heating actuator is connected to the water inlet of the second cavity, and the water outlet of the second cavity is connected to the first water return port through a second ball valve;

[0007] The oil outlet of the fuel tank is connected to the oil suction port of the fuel heater and the oil inlet of the engine through a tee.

[0008] Further, a fuel filter is provided between the three-way joint and the fuel tank, and the fuel filter has a heating function.

[0009] Further, a first temperature sensor is provided in the fuel tank.

[0010] Further, several of the heating actuating devices include a fuel tank heater, a battery heater, a hydraulic oil tank heater, and an oil pan heater, which are respectively used to heat the fuel tank, the battery of the walking power station, the hydraulic oil tank, and the oil pan.

[0011] Further, the fuel tank heater is arranged in the fuel tank, the battery heater is arranged at the bottom of the battery, the hydraulic oil tank heater is arranged in the hydraulic oil tank, and the oil pan heater is arranged in the engine oil pan.

[0012] Further, the system further includes a second temperature sensor arranged in the hydraulic oil tank, a third temperature sensor arranged on the battery box, and a fourth temperature sensor arranged on the oil pan.

[0013] Further, when the fuel heater is not working, both the first ball valve and the second ball valve remain closed.

[0014] Compared with the prior art, when using the preheating system provided in the embodiments of the present invention, the cooling water in the engine water tank enters the engine, and then the cooling water in the engine enters the fuel heater for heating. The heated cooling water is branched into each heating actuating device, and each heating device heats the components that need to be preheated on the walking power station; the cooling water after passing through each heating actuating device converges and then flows back to the engine to preheat the engine, and then the cooling water flows out of the engine again, forming a closed heating cycle according to the above flow direction, continuously heating each component until the set time is reached or the set temperature is reached. The solution of the present invention preheats each component entirely through the cooling water. Compared with the prior art, the preheating effect is better. At the same time, it has good versatility and can reduce risks, being safe and reliable.

[0015] In a second aspect, the present invention provides a method for preheating a walking power station by using the preheating system of the provided walking power station, including: filling the engine water tank with cooling water;

[0016] Opening the first ball valve and the second ball valve;

[0017] Starting the fuel heater, the oil pump inside the fuel heater sucks oil from the fuel tank, and the fuel heater starts to work;

[0018] The cooling water in the engine enters the fuel heater for heating, and the heated cooling water enters the first cavity of the distribution valve for branching, and after branching, it enters each heating actuating element;

[0019] The cooling water in each heating actuator flows back to the second cavity of the distribution valve, then passes through the second ball valve and flows back to the engine through the first water return port to preheat the engine;

[0020] The cooling water then flows out from the second water outlet to form a heating closed loop, continuously heating each component of the walking power station.

[0021] Furthermore, when the fuel heater reaches the set heating time, the fuel heater is automatically cut off to stop heating;

[0022] When the fuel heater does not reach the set heating time, if each temperature sensor reaches the corresponding set temperature, the heating of the component corresponding to the temperature sensor is stopped. When the temperatures of all temperature sensors reach the corresponding set temperatures, the fuel heater is automatically cut off to stop heating; then the first ball valve and the second ball valve are closed.

[0023] Compared with the heating methods used in the prior art, after heating the cooling water through a fuel heater, all the components that need to be preheated on the entire walking power station adopt the method of preheating with cooling water, without the need for methods such as flame heating and ether heating. The preheating effect is good, and it has good versatility and higher safety, and is more suitable for the operating environments in high-cold and extremely cold regions.

[0024] In a third aspect, the present invention provides a walking power station, including the preheating system of the provided walking power station, and preheating the walking power station using the provided method. Compared with the prior art, this walking power station has a good preheating effect and can adapt to the operating environments in high-cold and extremely cold regions. Description of the Drawings

[0025] Figure 1 It is a system block diagram of the preheating system of the walking power station in the embodiment of the present invention.

[0026] In the figure: 1. Engine; 2. Engine water tank; 3. Fuel heater; 4. Distribution valve; 5. Fuel tank; 6. First water inlet; 7. First water outlet; 8. First water return port; 9. Second water outlet; 10. First cavity; 11. Second cavity; 12. First ball valve; 13. Second ball valve; 14. Three-way joint; 15. Fuel filter; 16. First temperature sensor; 17. Fuel tank heater; 18. Battery heater; 19. Hydraulic oil tank heater; 20. Oil pan heater. Detailed Embodiments

[0027] The present invention will be further described below in conjunction with the embodiments and the drawings of the specification. It should be noted that the terms "first", "second", etc. are only for convenience of description and should not be construed as limitations on the quantity, etc.

[0028] In a first aspect, in an embodiment of the present invention, the preheating system of the walking power station is mainly used in the walking power station. Generally, the walking power station is composed of an engine, a fuel tank, a battery, a hydraulic oil tank, a gearbox, a hydraulic pump, quick connectors, a controller, etc. In the proposed preheating system, some components of the walking power station are utilized.

[0029] As Figure 1 shown, the preheating system includes an engine 1, an engine water tank 2, a fuel heater 3, a distribution valve 4, a fuel tank 5, and a plurality of heating actuators. Among them, the engine 1 includes at least a first water inlet 6, a first water outlet 7, a first water return port 8, and a second water outlet 9; the distribution valve 4 includes at least a first cavity 10 and a second cavity 11; the first water inlet 6 is connected to the water outlet of the engine water tank 2, and the first water outlet 7 is connected to the water return port of the engine water tank 2; the second water outlet 9 is connected to the water inlet of the fuel heater 3 through a first ball valve 12; the water outlet of the fuel heater 3 is connected to the water inlet of the first cavity 10, and the water outlet of the first cavity 10 is connected to the heating actuator; the water outlet of each heating actuator is connected to the water inlet of the second cavity 11, and the water outlet of the second cavity 11 is connected to the first water return port 8 through a second ball valve 13. The oil outlet of the fuel tank 5 is respectively connected to the oil suction port of the fuel heater 3 and the oil inlet of the engine 1 through a tee 14. In the embodiment of the present invention, when the fuel heater 3 is not working, the first ball valve 12 and the second ball valve 13 are in a closed state.

[0030] The above components are all connected by pipelines, and the engine 1 and the fuel heater 3 share a fuel tank 5. Among them, the distribution valve 4 mainly plays the role of flow splitting and flow combining. Specifically, flow splitting is achieved in the first cavity 10, and flow combining is achieved in the second cavity 11. The distribution valve can adopt a hydraulic valve with flow splitting and flow collecting functions available on the market.

[0031] The cooling water in the engine water tank 2 enters the engine 1 from the first water inlet 6 of the engine 1, and after passing through the pipelines inside the engine 1, it returns to the engine water tank 2 from the first water outlet 7. The cooling water flowing out from the second water outlet 9 of the engine 1 enters the heater.

[0032] In the embodiment of the present invention, a fuel filter 15 is provided between the tee 14 and the fuel tank 5 to filter the fuel coming out of the fuel tank 5. The fuel filter 15 has a heating function, so that the fuel can be preheated. On the current market, there are many fuel filters 15 with heating functions, which can be directly selected according to requirements.

[0033] The heating actuator is mainly a heater used to heat the components that need preheating on the walking power station. In the embodiments of the present invention, the heating actuator includes a fuel tank heater 17, a battery heater 18, a hydraulic oil tank heater 19, and an oil pan heater 20, which are respectively used to heat the fuel tank, the battery, the hydraulic oil tank, and the oil pan of the walking power station. The fuel tank heater 17 is arranged in the fuel tank 5, the battery heater 18 is arranged at the bottom of the battery, the hydraulic oil tank heater 19 is arranged in the hydraulic oil tank, and the oil pan heater 20 is arranged in the engine oil pan. Therefore, in the embodiments of the present invention, the distribution valve 4 is adopted, and its first cavity 10 has 4 water outlets, which are respectively connected to the water inlets of the fuel tank heater 17, the battery heater 18, the hydraulic oil tank heater 19, and the oil pan heater 20; similarly, its second cavity 11 has 4 water inlets, which are respectively connected to the water outlets of the fuel tank heater 17, the battery heater 18, the hydraulic oil tank heater 19, and the oil pan heater 20.

[0034] In the embodiments of the present invention, a first temperature sensor 16 is arranged in the fuel tank 5 to monitor the fuel temperature in the fuel tank 5. At the same time, a second temperature sensor is arranged in the hydraulic oil tank, so that the temperature in the hydraulic oil tank can be monitored. A third temperature sensor is arranged on the battery box, so that the temperature of the battery box can be monitored. A fourth temperature sensor is arranged on the oil pan, so that the temperature of the oil pan can be monitored.

[0035] For the first ball valve 12, the second ball valve 13, the fuel heater 3, and each sensor, they can all be electrically connected to the controller, which is convenient for control.

[0036] Using the preheating system provided in the embodiments of the present invention, the cooling water in the engine water tank 2 enters the engine 1, and then the cooling water in the engine 1 enters the fuel heater 3 for heating. The heated cooling water is split and enters each heating actuator. Each heating device heats the components that need preheating on the walking power station; after the cooling water passes through each heating actuator and converges, it flows back to the engine to preheat the engine, and then the cooling water flows out of the engine again, forming a closed heating circulation loop according to the above flow direction, continuously heating each component until it reaches the set temperature. The solution of the present invention preheats each component entirely through the cooling water. Compared with the prior art, the preheating effect is better. At the same time, it has good versatility, and can reduce risks, being safe and reliable.

[0037] In the second aspect, in the embodiments of the present invention, a method for preheating a walking power station by using the proposed preheating system is also provided. The method includes:

[0038] First, fill the engine water tank 2 with cooling water. The cooling water in the engine water tank 2 flows into the engine 1 through a pipeline from the first water inlet 6 of the engine 1, and continue to add cooling water to the engine water tank 2 until it is full.

[0039] Then, open the first ball valve 12 and the second ball valve 13.

[0040] Then, start the fuel heater 3. The oil pump inside the fuel heater 3 sucks oil from the fuel tank 5, and the fuel heater 3 starts to work. When there is a fuel filter 15 with a heating function between the tee 14 and the fuel heater 3, the fuel is preheated before entering the fuel heater 3.

[0041] Then, the cooling water in the engine 1 enters the fuel heater 3 for heating. The heated cooling water enters the first cavity 10 of the distribution valve 4 for splitting, and after splitting, it enters each heating actuator. Such as entering the fuel tank heater 17, the battery heater 18, the hydraulic oil tank heater 19 and the oil pan heater 20, which can respectively heat the fuel tank, the battery of the walking power station, the hydraulic oil tank and the oil pan.

[0042] The cooling water passing through each heating actuator flows back to the second cavity 11 of the distribution valve 4 through a pipeline for confluence. After confluence, it passes through the second ball valve 13 and flows back to the engine 1 through the first water return port 8 to preheat the engine.

[0043] Then the cooling water flows out again from the second water outlet 9 of the engine 1, and in accordance with the above-mentioned cooling water flow mode, as Figure 1 the arrow indicates in the figure, a heating closed loop is formed, so as to continuously heat each component of the engine.

[0044] In the embodiment of the present invention, for when to stop heating, it can be controlled by the following method.

[0045] The heating time of the fuel heater can be controlled by using a timer on the console. When the fuel heater runs for the set heating time, the fuel heater is automatically cut off to stop heating.

[0046] It is also possible that when the fuel heater has not reached the set heating time, a set temperature is correspondingly set for each temperature sensor. When the temperature sensor reaches the corresponding set temperature, heating of the component corresponding to the temperature sensor is stopped. For example, if the set temperature of the first temperature sensor is set to 20 °C, then when the temperature of the first temperature sensor reaches 20 °C, heating of the fuel tank by the cooling water is stopped. Similarly, separate heating of the battery, hydraulic oil tank, and oil pan can also be achieved. Different set temperatures can be set for different temperature sensors to ensure that the temperature of the entire system does not become too high. When the temperatures of all the temperature sensors reach the set temperature, the fuel heater is cut off and heating is stopped. This avoids overheating of the heating medium of the system due to too long heating time.

[0047] After stopping heating, close the first ball valve 12 and the second ball valve 13. Then the engine can be started to put the walking power station into working state.

[0048] In the preheating method of the walking power station provided in the embodiments of the present invention, compared with the heating methods used in the prior art, after heating the cooling water through a fuel heater, all the components that need to be preheated on the entire walking power station adopt the method of preheating with cooling water, without the need for methods such as flame heating and ether heating. The preheating effect is good, and it has good versatility and higher safety, and is more suitable for the operating environments in high-cold and extremely cold regions.

[0049] In a third aspect, the present invention also provides a walking power station, including the preheating system of the provided walking power station, and preheating the walking power station using the provided method. Compared with the prior art, this walking power station has a good preheating effect and can adapt to the operating environments in high-cold and extremely cold regions.

[0050] The above embodiments are only the preferred embodiments of the present invention. It should be noted that: for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and equivalent replacements can be made. These technical solutions obtained by improving and equivalently replacing the claims of the present invention all fall within the protection scope of the present invention.

Claims

1. A preheating method for a walking power station, characterized in that, The preheating system adopted by the preheating method of the walking power station includes: an engine (1), an engine water tank (2), a fuel heater (3), a distribution valve (4), a fuel tank (5) and a number of heating actuators. The engine (1) at least includes a first water inlet (6), a first water outlet (7), a first water return port (8) and a second water outlet (9); the distribution valve (4) at least includes a first cavity (10) and a second cavity (11); The first water inlet (6) is connected to the water outlet of the engine water tank (2), and the first water outlet (7) is connected to the water return port of the engine water tank (2); the second water outlet (9) is connected to the water inlet of the fuel heater (3) through a first ball valve (12); the water outlet of the fuel heater (3) is connected to the water inlet of the first cavity (10), and the water outlet of the first cavity (10) is connected to the heating actuator; the water outlets of each heating actuator are connected to the water inlet of the second cavity (11), and the water outlet of the second cavity (11) is connected to the first water return port (8) through a second ball valve (13); The oil outlet of the fuel tank (5) is respectively connected to the oil suction port of the fuel heater (3) and the oil inlet of the engine (1) through a tee (14); The preheating method of the walking power station by the preheating system of the walking power station is as follows: Fill the engine water tank (2) with cooling water; Open the first ball valve (12) and the second ball valve (13); Start the fuel heater (3). The oil pump inside the fuel heater (3) sucks oil from the fuel tank (5), and the fuel heater (3) starts to work; The cooling water in the engine (1) enters the fuel heater (3) for heating. The heated cooling water enters the first cavity (10) of the distribution valve (4) for shunting, and then enters each heating actuator; The cooling water flowing through each heating actuator flows back to the second cavity (11) of the distribution valve (4), then passes through the second ball valve (13), and flows back to the engine (1) through the first water return port (8) to preheat the engine; The cooling water then flows out from the second water outlet (9) to form a heating closed loop, continuously heating each component of the walking power station.

2. The preheating method of the walking power station according to claim 1, characterized in that, A fuel filter (15) is provided between the tee (14) and the fuel tank (5), and the fuel filter (15) has a heating function.

3. The preheating method of the walking power station according to claim 2, characterized in that, A first temperature sensor (16) is provided in the fuel tank (5).

4. The preheating method of the walking power station according to any one of claims 1-3, characterized in that, The number of heating actuators includes a fuel tank heater (17), a battery heater (18), a hydraulic oil tank heater (19) and an oil pan heater (20), which are respectively used to heat the fuel tank, as well as the battery, hydraulic oil tank and oil pan of the walking power station.

5. The preheating method of the walking power station according to claim 4, characterized in that, The fuel tank heater (17) is provided in the fuel tank (5), the battery heater (18) is provided at the bottom of the battery, the hydraulic oil tank heater (19) is provided in the hydraulic oil tank, and the oil pan heater (20) is provided in the engine oil pan.

6. The preheating method of the walking power station according to claim 5, characterized in that, The system further includes a second temperature sensor provided in the hydraulic oil tank, a third temperature sensor provided on the battery box, and a fourth temperature sensor provided on the oil pan.

7. The preheating method of the walking power station according to claim 6, characterized in that, When the fuel heater is not working, both the first ball valve (12) and the second ball valve (13) remain closed.

8. A preheating method for a walking power station according to any one of claims 1-7, characterized in that, The method includes: When the fuel heater (3) reaches the set heating time, the fuel heater (3) is automatically cut off to stop heating; When the fuel heater (3) does not reach the set heating time, if each temperature sensor reaches the corresponding set temperature, the heating of the component corresponding to the temperature sensor is stopped. When the temperatures of all temperature sensors all reach the corresponding set temperatures, the fuel heater (3) is automatically cut off to stop heating; Then the first ball valve (12) and the second ball valve (13) are closed.

9. A walking power station, characterized in that, The walking power station preheats the walking power station by using the preheating method described in any one of claims 1 to 8.

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