Liquid heating system, control system for quick start of engineering equipment and engineering equipment

Abstract

The utility model discloses a liquid heating system, a control system for quick start of engineering equipment and the engineering equipment. The liquid heating system includes: an engine including a cooling mechanism; an outlet of the hydraulic oil tank is connected with an inlet of the cooling mechanism; the liquid heater is used for heating flowing cooling liquid, a heating circulation outlet and a heating circulation inlet are formed in the two ends of the liquid heater respectively, the heating circulation inlet is connected with an outlet of the cooling mechanism, the heating circulation outlet is connected with an inlet of the heat exchange pipeline through a first outlet pipeline, and a second outlet pipeline is connected with an inlet of the cooling mechanism; the hydraulic oil heating switch valve is arranged on the first outlet pipeline; the cooling mechanism heating switch valve is arranged on the second outlet pipeline; the cooling mechanism self-circulation switch valve is arranged on the circulation pipeline, and the two ends of the circulation pipeline are connected with an inlet and an outlet of the cooling mechanism respectively. By designing a liquid heating double-valve control structure, the hydraulic oil and the cooling liquid can be heated at the same time, and the system cost is reduced.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, specifically to a liquid heating system, a control system for rapid start-up of engineering equipment, and engineering equipment. Background Technology

[0002] In existing liquid heating systems, to meet the cooling needs of the engine and the heating needs of the hydraulic oil, a separate cooling system and a hydraulic oil heating system are typically used. While this approach can meet the thermal management requirements of the engine and hydraulic system to a certain extent, it suffers from low resource utilization efficiency, high system complexity, and high cost. Specifically, existing cooling systems are usually only used for engine cooling, while hydraulic oil heating requires an additional heating device; therefore, the current technology suffers from high system costs. Utility Model Content

[0003] The purpose of this application is to provide a liquid heating system, a control system for rapid start-up of engineering equipment, and engineering equipment, in order to solve the problem of high system cost in the prior art.

[0004] To achieve the above objectives, the first aspect of this application provides a liquid heating system, comprising:

[0005] The engine has an internal cooling system containing coolant;

[0006] The hydraulic oil tank is equipped with heat exchange pipelines inside, and the outlet of the heat exchange pipelines is connected to the inlet of the cooling mechanism.

[0007] The liquid heater is used to heat the flowing coolant. The two ends of the liquid heater are the heating circulation outlet and the heating circulation inlet, respectively. The heating circulation inlet is connected to the outlet of the cooling mechanism through the inlet pipe. The heating circulation outlet is connected to the inlet of the heat exchange pipe through the first outlet pipe. The heating circulation outlet is connected to the inlet of the cooling mechanism through the second outlet pipe.

[0008] The hydraulic oil heating switch valve is installed on the first outlet pipeline;

[0009] The cooling mechanism heating switch valve is located on the second outlet pipe;

[0010] The cooling mechanism has a self-circulating switching valve, which is installed on the circulation pipeline. One end of the circulation pipeline is connected to the inlet of the cooling mechanism, and the other end is connected to the outlet of the cooling mechanism.

[0011] In this embodiment of the application, a stirring mechanism is provided in the hydraulic oil tank.

[0012] A second aspect of this application provides a control system for rapid startup of engineering equipment, the control system comprising:

[0013] Working medium temperature detection unit is used to detect the temperature of various working media in engineering equipment;

[0014] Multiple heating subsystems are used to heat various working media in the engineering equipment, including the liquid heating system mentioned above;

[0015] The controller communicates with the working medium temperature detection unit and multiple heating subsystems to receive signals sent by the working medium temperature detection unit and to issue control commands to the multiple heating subsystems.

[0016] In this embodiment, the working medium temperature detection unit includes: an oil temperature sensor for detecting the temperature of the oil in the engineering equipment; a fuel temperature sensor for detecting the temperature of the fuel in the engineering equipment; a coolant temperature sensor for detecting the temperature of the coolant; a hydraulic oil temperature sensor disposed on the end of the hydraulic oil tank away from the heat exchange pipeline for measuring the temperature of the hydraulic oil in the hydraulic oil tank; and a battery box temperature sensor disposed inside the battery box for detecting the temperature inside the battery box.

[0017] In this embodiment of the application, the multiple heating subsystems further include a battery heating subsystem; the battery heating subsystem includes: a battery heating device, disposed inside the battery box, for heating the air inside the battery box to raise the temperature inside the box.

[0018] In this embodiment of the application, the control system further includes a fuel tank, and the multiple heating subsystems further include a fuel heating subsystem; the fuel heating subsystem includes: a fuel heating device for heating the fuel tank or a fuel delivery pipeline connected to the fuel tank.

[0019] In this embodiment of the application, the control system further includes a fuel filter device, and the multiple heating subsystems further include a fuel heating subsystem; the fuel heating subsystem includes: a first ring structure disposed on the fuel filter device; and a fuel heating device that indirectly heats the fuel by heating the first ring structure.

[0020] In this embodiment of the application, the control system further includes an oil filter device, and the multiple heating subsystems further include an oil heating subsystem; the oil heating subsystem includes: a second ring structure disposed on the oil filter device; and an oil heating device that indirectly heats the oil by heating the second ring structure.

[0021] In this embodiment, the multiple heating subsystems further include an engine intake air heating subsystem; the engine intake air heating subsystem includes: an intake air heating device for heating the air entering the engine; an intake air heating switch for changing the circuit on / off state of the intake air heating device; an ambient temperature sensor, located on the engineering equipment away from each heat-generating working component, for measuring the ambient temperature; and an engine control unit for receiving signals sent by the ambient temperature sensor and sending on / off control commands to the intake air heating switch.

[0022] A third aspect of this application provides an engineering device, including: the aforementioned control system for rapid startup of the engineering device.

[0023] The above technical solution provides a liquid heating system, including: an engine with a cooling mechanism containing coolant; a hydraulic oil tank with a heat exchange pipeline; the outlet of the heat exchange pipeline connected to the inlet of the cooling mechanism; a liquid heater for heating the flowing coolant; the liquid heater has a heating circulation outlet and a heating circulation inlet at its two ends, respectively; the heating circulation inlet is connected to the outlet of the cooling mechanism via an inlet pipeline; the heating circulation outlet is connected to the inlet of the heat exchange pipeline via a first outlet pipeline; the heating circulation outlet is connected to the inlet of the cooling mechanism via a second outlet pipeline; a hydraulic oil heating switch valve is installed on the first outlet pipeline; a cooling mechanism heating switch valve is installed on the second outlet pipeline; and a cooling mechanism self-circulation switch valve is installed on the circulation pipeline; one end of the circulation pipeline is connected to the inlet of the cooling mechanism, and the other end is connected to the outlet of the cooling mechanism. This application, by designing a dual-valve control structure for liquid heating, can control the flow direction of the heated coolant according to different needs, simultaneously satisfying the heating of both hydraulic oil and coolant, and saving a separate heating system, thus reducing system costs.

[0024] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings:

[0026] Figure 1 A structural diagram of a liquid heating system provided in an embodiment of this application;

[0027] Figure 2 This is a structural block diagram of a control system for rapid startup of engineering equipment, provided as an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures

[0029] 1. Engine 2. Hydraulic oil tank

[0030] 3 Heat exchange piping 4 Liquid heater

[0031] 5. Hydraulic oil heating switch valve; 6. Cooling mechanism heating switch valve

[0032] 7. Cooling mechanism self-circulation switching valve; 8. Stirring mechanism.

[0033] 100 working medium temperature detection units and over 200 heating subsystems

[0034] 300 Controller 110 Oil Temperature Sensor

[0035] 120 Fuel temperature sensor 130 Coolant temperature sensor

[0036] 140 Hydraulic oil temperature sensor; 150 Battery box internal temperature sensor

[0037] 210 Liquid heating system 220 Battery heating subsystem

[0038] 230 Fuel Heating Subsystem 240 Oil Heating Subsystem

[0039] 250 Engine Intake Air Heating Subsystem Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0041] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0043] In this application embodiment, engineering equipment refers to engineering equipment whose working medium includes fuel oil, coolant, engine oil, and hydraulic oil, such as concrete equipment, lifting equipment, excavating equipment, and compaction equipment. For ease of understanding, a concrete pump is used as an example of engineering equipment in the following description. It should be understood that the following is only an example to illustrate this solution and is not intended to limit the embodiments of this application.

[0044] Figure 1 This is a structural diagram of a liquid heating system provided in an embodiment of this application. Figure 1 As shown, this application embodiment provides a liquid heating system, which includes:

[0045] Engine 1, which has a cooling system containing coolant.

[0046] The hydraulic oil tank 2 is equipped with a heat exchange pipeline 3 inside, and the outlet of the heat exchange pipeline 3 is connected to the inlet of the cooling mechanism.

[0047] The liquid heater 4 is used to heat the flowing coolant. The two ends of the liquid heater are a heating circulation outlet and a heating circulation inlet, respectively. The heating circulation inlet is connected to the outlet of the cooling mechanism through an inlet pipe. The heating circulation outlet is connected to the inlet of the heat exchange pipe through a first outlet pipe. The heating circulation outlet is connected to the inlet of the cooling mechanism through a second outlet pipe.

[0048] Hydraulic oil heating switch valve 5 is installed on the first outlet pipeline.

[0049] The cooling mechanism heating switch valve 6 is located on the second outlet pipe.

[0050] The cooling mechanism has a self-circulating switching valve 7, which is installed on the circulation pipeline. One end of the circulation pipeline is connected to the inlet of the cooling mechanism, and the other end is connected to the outlet of the cooling mechanism.

[0051] It can be understood that the cooling mechanism inside engine 1 is used to circulate coolant to cool engine 1, or to circulate heated coolant to heat engine 1. The heat exchange pipe 3 in the hydraulic oil tank is used to cool hydraulic oil using flowing coolant, or to heat hydraulic oil using flowing heated coolant. The hydraulic heater 4 is used to heat the flowing coolant via a heating motor. The hydraulic oil heating switch valve 5 is used to control whether coolant flows into the heat exchange pipe 3. The cooling mechanism heating switch valve 6 is used to control whether coolant flows directly back to the cooling mechanism. The cooling mechanism self-circulation switch valve 7 is used to control whether coolant circulates within the cooling mechanism.

[0052] In one example, under normal cooling mode, when engine 1 is operating, the coolant circulates within the cooling system, absorbing and carrying away the heat generated by engine 1. Hydraulic oil exchanges heat with the coolant through heat exchange pipe 3, maintaining the hydraulic oil at a suitable temperature. At this time, the hydraulic heater is not operating, and the hydraulic oil heating switch valve 5 is open, while the cooling system self-circulation switch valve 7 and / or the cooling system heating switch valve 6 are closed.

[0053] In one example, in the cooling mechanism's independent heating mode, the liquid heater 4 starts working, the hydraulic oil heating switch valve 5 is closed, the cooling mechanism heating switch valve 6 is open, and the cooling mechanism self-circulation switch valve 7 is closed or remains open, which can be designed according to actual needs. At this time, the coolant flows out from the cooling mechanism outlet, is heated by the liquid heater 4, and then flows directly back to the cooling mechanism inlet through the second outlet pipe, thereby heating the engine 1 and helping to quickly preheat the engine 1 or maintain the coolant temperature in cold environments.

[0054] In one example, in the simultaneous heating mode of the cooling mechanism and hydraulic oil, the liquid heater 4 starts working, the hydraulic oil heating switch valve 5 is open, the cooling mechanism heating switch valve 6 is closed or open, and the cooling mechanism self-circulation switch valve 7 is closed or remains open, which can be designed according to actual needs. Coolant flows out from the cooling mechanism outlet, is heated by the liquid heater 4, and then enters the heat exchange pipeline 3 through the first outlet pipe to heat the hydraulic oil. When the cooling mechanism heating switch valve 6 is closed, the heated coolant does not flow directly back to the cooling mechanism but continues to participate in the heating process of the hydraulic oil until both the hydraulic oil and engine 1 reach their corresponding set temperatures. When the cooling mechanism heating switch valve 6 is open, part of the heated coolant flows directly back to the cooling mechanism, and part flows into the heat exchange pipeline 3 until both the hydraulic oil and engine 1 reach their corresponding set temperatures. After both reach their corresponding set temperatures, the liquid heater 4 stops heating.

[0055] Preferably, to improve the flexibility of liquid heating, the liquid heater 4 can have multiple operating positions. For example, the liquid heater 4 can operate in two positions. In the first position, the power is relatively low, and the heated coolant is only used for heat exchange with the hydraulic oil. At this time, the hydraulic oil heating switch valve is open, and the cooling mechanism heating switch valve is closed. In the second position, the heating power is higher, and both heating switch valves are open. The output heat provides heating for both the hydraulic oil and the engine 1 cooling mechanism.

[0056] In one example, in the self-circulation mode of the cooling mechanism, during the heating process, the self-circulation switch valve 7 of the cooling mechanism is in the closed state. When neither the hydraulic oil nor the coolant needs to be heated, both heating switch valves are closed, and the self-circulation switch valve 7 of the cooling mechanism is opened, so that the coolant self-circulates.

[0057] The above technical solution provides a liquid heating system 210, including: an engine 1 with a cooling mechanism containing coolant; a hydraulic oil tank 2 with a heat exchange pipeline 3 inside; the outlet of the heat exchange pipeline 3 is connected to the inlet of the cooling mechanism; a liquid heater 4 for heating the flowing coolant; the two ends of the liquid heater 4 are a heating circulation outlet and a heating circulation inlet, respectively; the heating circulation inlet is connected to the outlet of the cooling mechanism through an inlet pipeline; the heating circulation outlet is connected to the inlet of the heat exchange pipeline 3 through a first outlet pipeline; the heating circulation outlet is connected to the inlet of the cooling mechanism through a second outlet pipeline; a hydraulic oil heating switch valve 5 is installed on the first outlet pipeline; a cooling mechanism heating switch valve 6 is installed on the second outlet pipeline; and a cooling mechanism self-circulation switch valve 7 is installed on the circulation pipeline; one end of the circulation pipeline is connected to the inlet of the cooling mechanism, and the other end is connected to the outlet of the cooling mechanism. This application, by designing a liquid heating dual-valve control structure, can control the flow direction of the heated coolant according to different needs, simultaneously satisfying the heating of hydraulic oil and coolant, and saving a separate heating system, thus reducing system costs.

[0058] like Figure 1 As shown in the embodiment of this application, a stirring mechanism 8 is provided in the hydraulic oil tank 2.

[0059] Specifically, in addition to the use of heat exchange in the heating of hydraulic oil, a stirring mechanism 8 is added to the hydraulic oil tank 2 to improve the heating effect and avoid local overheating.

[0060] Figure 2 This application provides a structural block diagram of a control system for rapid startup of engineering equipment, as illustrated in an embodiment of the present application. The present application also provides a control system for rapid startup of engineering equipment, comprising:

[0061] The working medium temperature detection unit 100 is used to detect the temperature of various working media in the engineering equipment.

[0062] Multiple heating subsystems 200 are used to heat various working media in the engineering equipment, and the multiple heating subsystems 200 include the liquid heating system 210 in the above embodiment.

[0063] The controller 300 communicates with the working medium temperature detection unit 100 and multiple heating subsystems 200, and is used to receive signals sent by the working medium temperature detection unit 100 and to issue control commands to the multiple heating subsystems 200.

[0064] In this embodiment, the working medium temperature detection unit 100 is used to detect the temperature of various working media in the engineering equipment. The working media in the engineering equipment may include hydraulic oil, fuel oil, engine oil, and coolant. For engineering equipment including batteries, considering that the battery's performance is also affected by temperature, and since batteries are generally installed in a battery box, the working medium temperature detection unit 100 can also detect the temperature inside the battery box. It is understood that the specific working media included in the engineering equipment need to be determined based on the actual situation. Multiple heating subsystems 200 are used to heat the various working media that need to be heated in the engineering equipment. Among the multiple heating subsystems 200 is a liquid heating system 210, which is used to heat the engine coolant and hydraulic oil. The controller 300 can communicate with the working medium temperature detection unit 100 and multiple heating subsystems 200 respectively. It can receive signals sent by the working medium temperature detection unit 100, and based on the received signals, it can run a preset control program to obtain control results, and then send control commands to the corresponding heating subsystems. The control commands include heating commands and stop heating commands, so that the corresponding heating subsystems can start or stop performing heating operations.

[0065] In this embodiment, the working medium temperature detection unit 100 includes: an oil temperature sensor 110 for detecting the temperature of the oil in the engineering equipment; a fuel temperature sensor 120 for detecting the temperature of the fuel in the engineering equipment; a coolant temperature sensor 130 for detecting the temperature of the coolant; a hydraulic oil temperature sensor 140, disposed on the end of the hydraulic oil tank away from the heat exchange pipeline, for measuring the temperature of the hydraulic oil in the hydraulic oil tank; and a battery box temperature sensor 150, disposed inside the battery box, for detecting the temperature inside the battery box.

[0066] It is understandable that corresponding temperature sensors are installed for the working media in engineering equipment to detect the temperature of each working medium. These sensors can capture and record the temperature data of various media in real time and accurately, providing key information for subsequent intelligent control.

[0067] Specifically, the oil temperature sensor 110 is typically installed in the oil circulation system of the engineering equipment to monitor the oil temperature in real time, ensuring that the oil operates within the appropriate temperature range to maintain normal lubrication and cooling of the engine 1. The fuel temperature sensor 120 is typically located at a critical location in the fuel supply system, such as near the fuel tank or fuel filter, to detect the fuel temperature, helping to control the fuel injection quantity and timing, thereby improving combustion efficiency and engine 1 performance. The coolant temperature sensor 130 is typically installed in the coolant circulation path of the cooling mechanism, such as at the coolant outlet or inlet, to monitor the coolant temperature, providing crucial data for the cooling management of the engine 1. By controlling the coolant flow and temperature, it ensures that the engine 1 operates under optimal conditions. The hydraulic oil temperature sensor 140 is located on the hydraulic oil tank 2 at the end furthest from the heat exchange pipeline 3 to ensure that the measured hydraulic oil temperature is not affected by the heat exchange process. It measures the temperature of the hydraulic oil in the hydraulic oil tank 2, providing a basis for the temperature management of the hydraulic system. The battery box temperature sensor 150 is installed inside the battery box, away from the heat source, to detect the temperature inside the battery box. This helps monitor the battery's operating environment and health status, ensuring the system operates normally.

[0068] In this embodiment of the application, the multiple heating subsystems also include a battery heating subsystem 220; the battery heating subsystem 220 includes: a battery heating device, disposed inside the battery box, for heating the air inside the battery box to raise the temperature inside the box.

[0069] Specifically, for engineering equipment containing batteries, to ensure that the batteries maintain a suitable operating temperature when the equipment starts in a cold environment, the multiple heating subsystems 200 may include a battery heating subsystem 220. The battery heating subsystem 220 includes a battery heating device located inside the battery compartment. This device heats the air inside the battery compartment, and through heat conduction, the overall temperature inside the battery compartment gradually rises. This avoids the safety risks that may arise from directly heating the battery while effectively increasing the battery's operating ambient temperature.

[0070] For example, in practical applications, when the controller 300 detects that the temperature inside the battery box is lower than the preset safe or optimal operating temperature range, the controller 300 sends a start command to the battery heating subsystem 220. The battery heating device then begins to operate, heating the air inside the battery box. As the air temperature rises, the overall temperature inside the battery box gradually increases until it reaches the preset operating temperature range. During this process, the controller 300 continuously monitors the temperature inside the battery box and adjusts the heating power of the heating device as needed to ensure temperature stability and safety.

[0071] In this embodiment of the application, the control system further includes a fuel tank, and the plurality of heating subsystems 200 further include a fuel heating subsystem 230; the fuel heating subsystem 230 includes: a fuel heating device for heating the fuel tank or a fuel delivery pipeline connected to the fuel tank.

[0072] Specifically, to further improve the starting performance and operating efficiency of the engineering equipment in low-temperature environments, the multiple heating subsystems 200 also include a fuel heating subsystem 230, which includes a fuel heating device. The fuel heating device is used to heat the fuel tank or the fuel supply pipe connected to the fuel tank. By increasing the fuel temperature, the fuel heating device can effectively improve the fuel's flowability and reduce its viscosity, thereby ensuring that fuel can be smoothly supplied to the engine 1 in low-temperature environments.

[0073] In this embodiment of the application, the control system further includes a fuel filter device, and the plurality of heating subsystems 200 further include a fuel heating subsystem 230; the fuel heating subsystem 230 includes: a first ring structure disposed on the fuel filter device; and a fuel heating device that indirectly heats the fuel by heating the first ring structure.

[0074] It is understood that the fuel filter is a crucial component in engineering equipment used to filter impurities and particulate matter from fuel. It effectively removes solid particles, moisture, and gum contaminants from the fuel, ensuring that the fuel supplied to engine 1 is clean, thereby extending the service life of engine 1 and improving the overall performance of the equipment. The first ring structure, located on the fuel filter, serves as a heat transfer medium between the fuel heating device and the fuel. The fuel heating subsystem 230 can also indirectly heat the fuel by heating the ring structure installed on the fuel filter. Specifically, the fuel heating device transfers heat by heating the first ring structure, thereby indirectly increasing the temperature of the fuel flowing through the fuel filter. This indirect heating method not only avoids the safety risks associated with direct fuel heating but also ensures the uniformity and stability of the fuel temperature. Furthermore, since the heating device does not directly contact the fuel, it reduces maintenance costs and potential points of failure.

[0075] In this embodiment of the application, the control system further includes an oil filter device, and the plurality of heating subsystems 200 further include an oil heating subsystem 240; the oil heating subsystem 240 includes: a second ring structure disposed on the oil filter device; and an oil heating device that indirectly heats the oil by heating the second ring structure.

[0076] It is understandable that the oil filter is a crucial component in engineering equipment used to filter impurities and particulate matter from engine oil. It effectively removes solid particles, moisture, and colloids from the oil, ensuring that the oil supplied to engine 1 is clean, thereby extending the engine 1's lifespan and improving the overall performance of the equipment. The second ring structure, located on the oil filter, serves as a heat transfer medium between the oil heating device and the oil. The oil heating subsystem 240 can also indirectly heat the oil by heating the ring structure installed on the oil filter. Specifically, the oil heating device transfers heat by heating the second ring structure, thereby indirectly increasing the temperature of the oil flowing through the oil filter. This indirect heating method not only avoids the safety risks associated with direct oil heating but also ensures the uniformity and stability of the oil temperature. Furthermore, since the oil heating device does not directly contact the oil, it reduces maintenance costs and potential points of failure.

[0077] In this embodiment of the application, the plurality of heating subsystems 200 further include an engine intake air heating subsystem 250; the engine intake air heating subsystem 250 includes: an intake air heating device for heating the air entering the engine 1; an intake air heating switch for changing the circuit on / off state of the intake air heating device; an ambient temperature sensor, disposed on the engineering equipment at a position away from each heat-generating working component, for measuring the ambient temperature; and an engine 1 control unit for receiving signals sent by the ambient temperature sensor and sending on / off control commands to the intake air heating switch.

[0078] To further improve the starting performance and operating efficiency of engineering equipment in low-temperature environments, the multiple heating subsystems 200 may include an engine intake air heating subsystem 250. The engine intake air heating subsystem 250 includes an intake air heating device, an intake air heating switch, an ambient temperature sensor, and an engine 1 control unit. The intake air heating device heats the air entering the engine 1. By increasing the intake air temperature, the intake air heating device improves fuel atomization, promotes more complete combustion, and thus improves the engine 1's power output and fuel economy. The intake air heating switch controls the on / off state of the intake air heating device's circuit. By changing the circuit state, the intake air heating switch can turn the heating device on or off as needed, achieving precise control of the intake air temperature. The ambient temperature sensor is located on the engineering equipment away from the heat-generating components. The ambient temperature sensor accurately measures the external ambient temperature, providing a data basis for the engine 1's intake air heating control. The engine 1 control unit receives signals from the ambient temperature sensor and sends on / off control commands to the intake air heating switch based on the results of a preset program. This facilitates more efficient and reliable starting of the engineering equipment in low-temperature environments.

[0079] A third aspect of this application provides an engineering device, including: the control system for rapid startup of the engineering device described in the above embodiments.

[0080] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0081] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A liquid heating system, characterized in that, include: The engine has an internal cooling system containing coolant; The hydraulic oil tank is equipped with heat exchange pipelines inside, and the outlet of the heat exchange pipelines is connected to the inlet of the cooling mechanism; A liquid heater is used to heat the flowing coolant. The two ends of the liquid heater are a heating circulation outlet and a heating circulation inlet, respectively. The heating circulation inlet is connected to the outlet of the cooling mechanism through an inlet pipe. The heating circulation outlet is connected to the inlet of the heat exchange pipe through a first outlet pipe. The heating circulation outlet is connected to the inlet of the cooling mechanism through a second outlet pipe. A hydraulic oil heating switch valve is installed on the first outlet pipeline; The cooling mechanism heating switch valve is located on the second outlet pipe; The cooling mechanism has a self-circulating switching valve installed on the circulation pipeline. One end of the circulation pipeline is connected to the inlet of the cooling mechanism, and the other end is connected to the outlet of the cooling mechanism.

2. The liquid heating system according to claim 1, characterized in that, The hydraulic oil tank is equipped with a stirring mechanism.

3. A control system for rapid start-up of engineering equipment, characterized in that, The control system includes: The working medium temperature detection unit is used to detect the temperature of each working medium in the engineering equipment; Multiple heating subsystems are provided for heating various working media in the engineering equipment, and the multiple heating subsystems include a liquid heating system according to any one of claims 1 to 2; The controller communicates with the working medium temperature detection unit and the plurality of heating subsystems, and is used to receive signals sent by the working medium temperature detection unit and to issue control commands to the plurality of heating subsystems.

4. The control system according to claim 3, characterized in that, The working medium temperature detection unit includes: An oil temperature sensor is used to detect the temperature of the oil in the engineering equipment. A fuel temperature sensor is used to detect the temperature of the fuel in the engineering equipment; A coolant temperature sensor is used to detect the temperature of the coolant; A hydraulic oil temperature sensor is installed on the hydraulic oil tank at the end away from the heat exchange pipeline, and is used to measure the temperature of the hydraulic oil in the hydraulic oil tank; A temperature sensor is installed inside the battery box to detect the temperature inside the battery box.

5. The control system according to claim 3, characterized in that, The plurality of heating subsystems further includes a battery heating subsystem; the battery heating subsystem includes: A battery heating device is installed inside the battery box to heat the air inside the battery box, thereby raising the temperature inside the box.

6. The control system according to claim 3, characterized in that, The control system further includes a fuel tank, and the plurality of heating subsystems further include a fuel heating subsystem; the fuel heating subsystem includes: A fuel heating device for heating the fuel tank or the fuel supply pipe connected to the fuel tank.

7. The control system according to claim 3, characterized in that, The control system further includes a fuel filter, and the plurality of heating subsystems further include a fuel heating subsystem; the fuel heating subsystem includes: The first ring structure is disposed on the fuel filter device; The fuel heating device indirectly heats the fuel by heating the first ring structure.

8. The control system according to claim 3, characterized in that, The control system further includes an oil filter device, and the plurality of heating subsystems further include an oil heating subsystem; the oil heating subsystem includes: The second ring structure is disposed on the oil filter device; The oil heating device indirectly heats the oil by heating the second ring structure.

9. The control system according to claim 3, characterized in that, The plurality of heating subsystems further includes an engine intake air heating subsystem; the engine intake air heating subsystem includes: An intake air heating device is used to heat the air entering the engine; An intake heating switch is used to change the on / off state of the circuit of the intake heating device. An ambient temperature sensor is installed on the engineering equipment at a location away from the heat-generating working components to measure the ambient temperature. The engine control unit is used to receive signals sent by the ambient temperature sensor and to send on / off control commands to the intake air heater switch.

10. An engineering device, characterized in that, include: The control system for rapid start-up of engineering equipment according to any one of claims 3 to 9.

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