Engine oil unsealing cold start hydraulic driving station

Abstract

The utility model discloses an engine oil unsealing cold start hydraulic driving station, which relates to the technical field of engines, comprises an oil tank and a hydraulic motor, and is characterized in that the hydraulic motor is connected with a hydraulic rubber tube, the hydraulic rubber tube is connected with an electromagnetic proportional reversing valve, and the electromagnetic proportional reversing valve is connected with a hydraulic pump. An oil supply pipeline and an oil return pipeline are connected between the electromagnetic proportional directional valve and the oil tank, a plunger pump, a one-way valve, a high-pressure filter, a pressure sensor and a pressure gauge are sequentially arranged on the oil supply pipeline from the end of the oil tank, and an oil return filter and an electromagnetic overflow valve are sequentially arranged on the oil return pipeline from the end of the oil tank. According to the utility model, the hydraulic rubber pipe is connected with the electromagnetic proportional directional valve, so that the flow direction of hydraulic oil is controlled, and the functions of oil pumping pressurization, backflow prevention, impurity filtration, real-time monitoring and pressure display are realized; an oil return filter and an electromagnetic overflow valve are arranged on an oil return pipeline, impurities are further filtered, system pressure is adjusted, and overload is prevented.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, specifically to a hydraulic drive station for cold start engine oil unsealing. Background Technology

[0002] In the field of engine manufacturing and maintenance, cold starts and unsealing operations after long-term oil seals are critical aspects. Especially in cold environments or when the engine has been stored with the oil seal for a long time, the increased viscosity and decreased fluidity of the lubricating oil in the internal components of the engine lead to a significant increase in starting resistance. Direct starting can easily cause accelerated engine wear, starting failure, or even equipment damage.

[0003] Currently, the auxiliary power technologies for engine cold starts and oil seal opening mainly include the following solutions, but all of them have certain limitations:

[0004] Traditional motor drive solutions: Some existing technologies use motors to directly drive the engine to start, but motor drive is prone to insufficient torque and starting difficulties in low-temperature environments. In addition, the motor starting current is large, which has a significant impact on the power grid and is not suitable for occasions with high requirements for starting smoothness.

[0005] Simple hydraulic drive systems: While some existing hydraulic drive systems can provide some auxiliary power, their simple structure lacks necessary pressure regulation and protection mechanisms. For example, the system lacks an effective combination of pressure sensors and electromagnetic relief valves, making it impossible to monitor and regulate system pressure in real time, which can easily lead to system overload and damage to hydraulic components. At the same time, the return oil line is not equipped with a fine filtration device, making it difficult to guarantee the cleanliness of the hydraulic oil and affecting the long-term stability of the system.

[0006] Insufficient oil leak prevention and safety measures: Current technology has limited measures to prevent hydraulic oil leaks, lacking dedicated oil leak monitoring and emergency response mechanisms. Once an oil leak occurs, it will not only cause environmental pollution but may also pose safety hazards and affect the normal operation of the engine and surrounding equipment.

[0007] Poor environmental adaptability: Existing technologies lack effective hydraulic oil heating and temperature control measures when dealing with extreme environments (such as cold environments), which leads to poor hydraulic oil fluidity at low temperatures, further exacerbating the problem of starting difficulties. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a hydraulic drive station for cold start engine oil sealing, thus solving the problems mentioned in the technical background.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A hydraulic drive unit for cold start engine oil sealing includes an oil tank and a hydraulic motor. The hydraulic motor is connected to a hydraulic hose, which is connected to an electromagnetic proportional directional valve. The electromagnetic proportional directional valve is connected to the oil tank via a supply line and a return line. The supply line, starting from the oil tank end, is sequentially equipped with a plunger pump, a check valve, a high-pressure filter, a pressure sensor, and a pressure gauge. The return line, starting from the oil tank end, is sequentially equipped with a return filter and an electromagnetic relief valve.

[0011] In a preferred embodiment, the electromagnetic overflow valve is also connected to the oil supply pipeline via a pipe.

[0012] In a preferred embodiment, the oil tank is equipped with a heating element, a level gauge, and a thermal resistor.

[0013] In a preferred embodiment, an oil leakage pipeline is provided between the oil tank and the hydraulic motor. Two oil leakage pipelines are provided, and a zero-leakage solenoid valve is installed on each of the oil leakage pipelines.

[0014] In a preferred embodiment, the pressure gauge is a pointer pressure gauge.

[0015] In the preferred embodiment, the output shaft of the hydraulic motor is aligned with the shaft of the engine / generator mounting base.

[0016] In a preferred embodiment, an electromagnetic clutch is provided between the hydraulic motor and the engine. The hydraulic motor has a 30mm keyed shaft, the electromagnetic clutch has a 30mm bore, and the electromagnetic clutch has a torque limit of no more than 75 N·m.

[0017] This utility model provides a hydraulic drive station for cold start engine oil seal opening. It has the following beneficial effects:

[0018] Engine oil seal opening: Enables functions such as in-situ cold start of engine, rapid oil seal opening, on-machine in-situ oil seal opening, and ground-based independent oil seal opening, ensuring that the engine can complete the scheduled periodic work as required, reducing workload, and maintaining the engine's technical condition in a controllable and good manner for a long time.

[0019] System stability and functional implementation: The oil tank serves as the storage and supply center for hydraulic oil, providing a stable oil source for the hydraulic system; the hydraulic motor serves as the power output end, connected to the electromagnetic proportional directional valve via hydraulic hoses to control the flow of hydraulic oil, drive the motor to rotate, and construct a high-efficiency hydraulic drive system.

[0020] Oil supply and return pipeline protection: The oil supply pipeline is equipped with a plunger pump, check valve, high-pressure filter, pressure sensor and pressure gauge to realize oil pumping and pressurization, backflow prevention, impurity filtration, and real-time pressure monitoring and display functions; the oil return pipeline is equipped with a return oil filter and electromagnetic relief valve to further filter impurities and regulate system pressure to prevent overload.

[0021] Pressure regulation and protection: The electromagnetic relief valve is connected to the oil supply line to form a pressure regulation circuit. When the system pressure exceeds the set value, it will automatically open to drain or replenish oil to protect system components.

[0022] Oil tank auxiliary functions: The oil tank is connected to a heating element, a level gauge and a thermal resistor, which are used to heat the hydraulic oil in cold environments, monitor the liquid level in real time and measure the temperature, respectively, to provide a basis for temperature control.

[0023] Oil leakage prevention and safe operation: Two oil leakage pipelines are installed between the oil tank and the hydraulic motor, and equipped with zero-leakage solenoid valves. When an oil leak is detected, the pipelines are automatically shut off to ensure the safe operation of the system. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] In the diagram: 1-oil tank, 2-hydraulic motor, 3-hydraulic hose, 4-electromagnetic proportional directional valve, 5-oil supply line, 6-oil return line, 7-plunger pump, 8-check valve, 9-high pressure filter, 10-pressure sensor, 11-pressure gauge, 12-oil return filter, 13-electromagnetic relief valve, 14-heating tube, 15-level gauge, 16-thermal resistance, 17-leakage line, 18-zero leakage solenoid valve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 ,

[0028] This utility model provides a hydraulic drive station for cold start engine oil sealing, including an oil tank 1 and a hydraulic motor 2. The hydraulic motor 2 is connected to a hydraulic hose 3, which is connected to an electromagnetic proportional directional valve 4. An oil supply line 5 and a return line 6 are connected between the electromagnetic proportional directional valve 4 and the oil tank 1. Starting from the oil tank 1 end, the oil supply line 5 is sequentially equipped with a plunger pump 7, a check valve 8, a high-pressure filter 9, a pressure sensor 10, and a pressure gauge 11. Starting from the oil tank 1 end, the return line 6 is sequentially equipped with a return filter 12 and an electromagnetic relief valve 13. The oil tank 1 serves as the storage and supply center for hydraulic oil, providing a stable hydraulic oil source for the entire hydraulic system. The hydraulic motor 2 is the power output end of the system, connected to the electromagnetic proportional directional valve 4 via the hydraulic hose 3 to control the flow direction of the hydraulic oil, thereby driving the rotation of the hydraulic motor 2. Starting from the oil tank 1 end, the oil supply line 5 is equipped with, in sequence, a plunger pump 7 (used to draw hydraulic oil from the oil tank and pressurize it), a check valve 8 (to prevent hydraulic oil backflow), a high-pressure filter 9 (to filter impurities in the hydraulic oil and protect system components), a pressure sensor 10 (to monitor the oil supply pressure in real time), and a pressure gauge 11 (to display the oil supply pressure visually). Starting from the oil tank 1 end, the return line 6 is equipped with, in sequence, a return oil filter 12 (to further filter impurities in the return oil) and a solenoid relief valve 13 (used to regulate system pressure and prevent overload).

[0029] The electromagnetic relief valve 13 is also connected to the oil supply line 5 via a pipeline, forming a pressure regulating loop. When the system pressure exceeds the set value, the electromagnetic relief valve 13 will automatically open, draining excess hydraulic oil back to the oil tank or replenishing it to the oil supply line 5, thereby protecting system components from damage.

[0030] The oil tank 1 is connected to a heating element 14, a level gauge 15, and a thermal resistor 16. The heating element 14 heats the hydraulic oil in cold environments to ensure its fluidity. The level gauge 15 monitors the oil level in the tank in real time to prevent excessive or insufficient hydraulic oil levels. The thermal resistor 16 measures the temperature inside the tank, providing a basis for system temperature control.

[0031] An oil leakage pipeline 17 is also provided between the oil tank 1 and the hydraulic motor 2. Two oil leakage pipelines 17 are provided, each equipped with a zero-leakage solenoid valve 18. To prevent environmental pollution and safety hazards caused by hydraulic oil leakage, the oil leakage pipeline 17 is also provided between the oil tank 1 and the hydraulic motor 2. When an oil leak is detected, the zero-leakage solenoid valve 18 will automatically close, cutting off the leakage path and ensuring the safe operation of the system.

[0032] Pressure gauge 11 is a pointer pressure gauge. Its pointer design allows for a clear and accurate display of the oil supply pressure, facilitating real-time monitoring of the system status by operators.

[0033] The output shaft of hydraulic motor 2 is aligned with the shaft of the engine / generator mounting bracket. This alignment ensures precise alignment between the output shaft of hydraulic motor 2 and the shaft of the engine / generator mounting bracket, thereby improving transmission efficiency and reducing vibration and noise.

[0034] An electromagnetic clutch is installed between the hydraulic motor 2 and the engine. The hydraulic motor 2 has a 30mm keyed shaft, and the electromagnetic clutch has a 30mm bore. The torque limit of the electromagnetic clutch is no greater than 75 N·m. This electromagnetic clutch controls the power transmission between the hydraulic motor 2 and the engine. The 30mm keyed shaft and the 30mm bore of the electromagnetic clutch ensure a tight fit between them. The torque limit of the electromagnetic clutch is no greater than 75 N·m to prevent damage to components due to excessive torque.

[0035] Working principle of hydraulic drive station:

[0036] An AC motor drives the plunger pump 7 to rotate. The electromagnetic proportional directional valve 4 automatically connects the oil supply circuit 5 from the plunger pump 7 to the hydraulic motor 2, driving the hydraulic motor 2 mounted on the engine to operate, thereby rotating the engine. The hydraulic motor 2 operates for 60 seconds under the control of a time relay before disengaging. After the engine has been running stably for 1 minute, the drive system stops working. The engine rotor continues to rotate due to inertia, and the oil supply system continues to supply oil. The oil supply system stops operating after the engine has completely stopped running.

[0037] According to the engine oil / unsealing requirements, the PLC control and monitoring section sends control and receives feedback signals. Through the switches (buttons) on the control panel, it sends a pressure supply signal to the pressure supply system, enabling the system to provide pressure to the drive output system. When hydraulic motor 2 is not needed, the electromagnetic proportional directional valve 4 controls the pressure supply system to return oil from the return oil line 6, reducing the system load. When hydraulic motor 2 needs to drive the engine, the electromagnetic proportional directional valve 4 disconnects the return oil, allowing hydraulic motor 2 to obtain stable operating pressure, driving the engine to reach the required oil seal speed, and then disengaging after 60 seconds. To ensure absolute engine safety, an engine speed drop feedback signal output device is installed. When the output speed of hydraulic motor 2 remains constant and the engine speed suddenly drops, the speed sensor sends a signal to the PLC. Upon receiving the signal, the PLC sends a return oil signal to the electromagnetic proportional directional valve 4, causing the oil in the pressure supply system to return directly to the oil tank 1, stopping the pressure supply to hydraulic motor 2 and ensuring engine safety.

[0038] Hydraulic motor 2 reliably connects to the generator mounting interface on the engine via a connecting device, ensuring coaxiality. To ensure safe engine rotation in case of engine jamming or other special circumstances during startup or operation, in accordance with the requirement that the engine's maximum set torque not exceed 75 Nm, an electromagnetic clutch is installed on the connecting device, providing protection against engine damage.

[0039] The hydraulic drive station for cold start engine oil seal opening provided by this utility model integrates a variety of hydraulic components and auxiliary components to build a high-efficiency, safe and reliable hydraulic drive system, providing strong support for the engine under special working conditions such as cold start or oil seal opening.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic drive unit for cold start engine oil sealing, comprising an oil tank (1) and a hydraulic motor (2), characterized in that, The hydraulic motor (2) is connected to a hydraulic hose (3), which is connected to an electromagnetic proportional directional valve (4). The electromagnetic proportional directional valve (4) is connected to the oil tank (1) via an oil supply line (5) and a return line (6). The oil supply line (5) is provided with a plunger pump (7), a check valve (8), a high-pressure filter (9), a pressure sensor (10), and a pressure gauge (11) in sequence from the oil tank (1). The return line (6) is provided with a return filter (12) and an electromagnetic relief valve (13) in sequence from the oil tank (1).

2. The hydraulic drive unit for cold start engine oil sealing as described in claim 1, characterized in that: The electromagnetic overflow valve (13) is also connected to the oil supply line (5) via a pipeline.

3. The hydraulic drive unit for cold start engine oil sealing as described in claim 1, characterized in that: The oil tank (1) is connected to a heating tube (14), a level gauge (15), and a thermal resistor (16).

4. The hydraulic drive unit for cold start engine oil sealing as described in claim 1, characterized in that: An oil leakage pipeline (17) is also provided between the oil tank (1) and the hydraulic motor (2). There are two oil leakage pipelines (17), and a zero-leakage solenoid valve (18) is provided on each of the oil leakage pipelines (17).

5. The hydraulic drive unit for cold start engine oil sealing as described in claim 1, characterized in that: The pressure gauge (11) is a pointer pressure gauge.

6. The hydraulic drive unit for cold start engine oil sealing as described in claim 1, characterized in that: The output shaft of the hydraulic motor (2) is aligned with the shaft of the engine generator mounting base.

7. The hydraulic drive unit for cold start engine oil seal opening according to claim 6, characterized in that: An electromagnetic clutch is provided between the hydraulic motor (2) and the engine. The shaft diameter of the hydraulic motor (2) is a 30mm key shaft, the bore diameter of the electromagnetic clutch is 30mm, and the torque limit value of the electromagnetic clutch is no greater than 75N·M.

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