Hand-operated and integrated pump oil control system and method

Abstract

The present invention relates to the technical field of pump oil control, and discloses a manual and automatic integrated pump oil control system and method, including: a low oil level alarm module for the storage oil level monitors the oil level in the storage tank in real time, and when it is higher than a preset low oil level, the user selects a manual pump oil mode or an automatic pump oil mode through a manual and automatic pump oil selection module; in the manual pump oil mode, a high oil level alarm module for the fuel oil level monitors the oil level in the fuel tank in real time, and when the oil level is lower than a preset high oil level, it pumps oil according to the user's demand through a manual pump oil module; in the automatic pump oil mode, a fuel supply pump start-stop module monitors the oil level in the fuel tank in real time, and when it is lower than the fuel supply pump start point, it turns on the fuel supply pump, and the automatic pump oil module pumps oil automatically until the oil level is higher than the fuel supply pump stop point and then closes the fuel supply pump to stop pumping oil. The present invention can realize the pump oil function of manual and automatic integration while avoiding the burning of the fuel supply pump and the overflow of the fuel tank, is easy to operate, and has high safety.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel pumping control, and in particular to a manual-automatic integrated fuel pumping control system and method. Background Art

[0002] During the operation of power stations, diesel generator sets, etc., it is necessary to fill fuel from the fuel storage tank to the fuel tank to ensure fuel supply. The existing fuel pumping control methods are generally divided into an automatic mode and a manual mode, and one of the automatic mode or the manual mode is selected through a fuel pumping knob setting to control the fuel supply pump to pump fuel from the fuel storage tank to the fuel tank.

[0003] Currently, the fuel pumping control methods for power stations and diesel generator sets are single in form, either manual fuel pumping or automatic fuel pumping. The fuel pumping operation is complex, the cost is high, and the user experience is poor. At the same time, during the process of manual fuel pumping, when the fuel in the fuel storage tank is insufficient, the fuel supply pump may burn due to the lack of low liquid level alarm protection for the fuel storage liquid level, and the fuel tank may overflow due to the lack of high liquid level alarm protection for the fuel liquid level. The automatic fuel pumping mode also has the phenomena of fuel supply pump burning and fuel tank overflow, which brings potential safety hazards to fuel pumping. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and provide a manual-automatic integrated fuel pumping control system and method, which can avoid the phenomena of fuel supply pump burning and fuel tank overflow while realizing the integrated fuel filling function of manual and automatic, with simple operation and high safety.

[0005] To solve the above technical problem, the present invention provides a manual-automatic integrated fuel pumping control system, including a low liquid level alarm module for the fuel storage liquid level, a high liquid level alarm module for the fuel liquid level, a manual-automatic fuel pumping selection module, a manual fuel pumping module, an automatic fuel pumping module, and a fuel supply pump start-stop module.

[0006] The low liquid level alarm module for the fuel storage liquid level monitors the liquid level in the fuel storage tank in real time. When the liquid level in the fuel storage tank is higher than the preset low liquid level, the user selects to enter the manual fuel pumping mode or the automatic fuel pumping mode through the manual-automatic fuel pumping selection module.

[0007] When the user selects the manual fuel pumping mode, the high liquid level alarm module for the fuel liquid level monitors the liquid level in the fuel tank in real time, and pumps fuel into the fuel tank according to the user's needs through the manual fuel pumping module when the fuel liquid level is lower than the preset high liquid level.

[0008] When the user selects the automatic fuel pumping mode, the fuel supply pump start-stop module monitors the liquid level in the fuel tank in real time. When the fuel level is lower than the fuel supply pump start point, the fuel supply pump start-stop module turns on the fuel supply pump, and the automatic fuel pumping module automatically pumps fuel into the fuel tank; until the fuel level is higher than the fuel supply pump stop point, the fuel supply pump start-stop module turns off the fuel supply pump to stop pumping fuel.

[0009] In an embodiment of the present invention, the low fuel storage liquid level alarm module includes a fuel storage liquid level sensor and a fuel storage alarm. The fuel storage liquid level sensor is disposed in the fuel storage tank, and the fuel storage liquid level sensor is connected to the fuel storage alarm;

[0010] The fuel storage liquid level sensor monitors the liquid level in the fuel storage tank in real time. When the liquid level in the fuel storage tank is lower than the preset low liquid level, the fuel storage alarm issues an alarm.

[0011] In an embodiment of the present invention, the fuel storage liquid level sensor includes a floating ball, a metal rod, and a variable resistor.

[0012] The floating ball floats on the surface of the fuel in the fuel storage tank. One end of the metal rod is fixedly connected to the floating ball, and the other end of the metal rod is connected to the variable resistor through a movable contact;

[0013] When the liquid level height of the fuel in the fuel storage tank changes, the floating ball drives the metal rod to change the position of the movable contact on the variable resistor, and the resistance value of the variable resistor changes with different liquid level heights of the fuel in the fuel storage tank.

[0014] In an embodiment of the present invention, the high fuel liquid level alarm module includes a fuel liquid level sensor and an alarm. The fuel liquid level sensor is disposed in the fuel tank, and the fuel liquid level sensor is connected to the fuel alarm;

[0015] The fuel liquid level sensor monitors the liquid level in the fuel tank in real time. When the liquid level in the fuel tank is higher than the preset high liquid level, the fuel alarm issues an alarm.

[0016] In an embodiment of the present invention, the automatic fuel pumping module includes a unit controller and a fuel supply pump. The unit controller includes an output relay.

[0017] The unit controller receives the fuel liquid level signal collected by the fuel liquid level sensor in real time. The unit controller controls the switch of the output relay according to the fuel liquid level signal, and the output relay controls the switch of the fuel supply pump.

[0018] In an embodiment of the present invention, the unit controller controls the switch of the output relay according to the fuel liquid level signal, specifically as follows:

[0019] The unit controller converts the fuel level signal into an analog quantity represented by a percentage, and sets the starting point and stopping point of the fuel supply pump according to the magnitude of the analog quantity;

[0020] When the magnitude of the analog quantity of the fuel level signal is less than the starting point of the fuel supply pump, the output relay is activated, and the output relay controls the fuel supply pump to pump fuel into the fuel tank;

[0021] When the magnitude of the analog quantity of the fuel level signal is greater than the stopping point of the fuel supply pump, the output relay is closed, and the output relay controls the fuel supply pump to stop pumping fuel.

[0022] In an embodiment of the present invention, a protection relay is further included,

[0023] The protection relay is connected to the fuel supply pump, and the protection relay is turned on when the fuel supply pump pumps fuel;

[0024] When the liquid level in the fuel tank is higher than the preset high liquid level, the protection relay is disconnected, and the fuel supply pump stops pumping fuel to prevent the fuel tank from overflowing;

[0025] When the liquid level in the storage tank is lower than the preset low liquid level, the protection relay is disconnected, and the fuel supply pump stops pumping fuel to prevent the fuel supply pump from burning.

[0026] In an embodiment of the present invention, the manual / auto fuel pumping selection module includes an oil pump button, and the oil pump button is provided with an oil pump indicator light,

[0027] The oil pump button is a self-resetting button. When the user presses the oil pump button, it is in the manual fuel pumping mode. When the user does not press the oil pump button, it is in the automatic fuel pumping mode;

[0028] When the user presses the oil pump button, the fuel supply pump starts pumping fuel; when the user continuously presses the oil pump button, the fuel supply pump continuously pumps fuel, and the oil pump indicator light is on; when the user releases the oil pump button, the manual fuel pumping ends, and the fuel supply pump stops pumping fuel.

[0029] In an embodiment of the present invention, a middle relay and a normally open contact are further included, and the normally open contact is arranged on the main circuit of the fuel supply pump;

[0030] When the middle relay is energized and attracted, the normally open contact is closed, the fuel supply pump starts pumping fuel, and the oil pump indicator light is on; when the middle relay is de-energized and reset, the normally open contact is opened, the fuel supply pump stops pumping fuel, and the oil pump indicator light is off;

[0031] When the analog value of the fuel level signal is less than the starting point of the fuel supply pump, the intermediate relay is energized and attracted; when the analog value of the fuel level signal is greater than the stopping point of the fuel supply pump, the intermediate relay is de-energized and reset;

[0032] When the fuel pump button is in the pressed state, the intermediate relay is energized and attracted; when the fuel pump button is released, the intermediate relay is de-energized and reset.

[0033] The present invention also provides a manual-automatic integrated fuel pumping control method, including:

[0034] Real-time monitor the liquid level in the storage tank and the fuel tank. When the liquid level in the storage tank is higher than the preset low liquid level, the user can choose to enter the manual fuel pumping mode or the automatic fuel pumping mode;

[0035] When the user selects the manual fuel pumping mode, real-time monitor the liquid level in the fuel tank, and pump fuel into the fuel tank according to the user's needs when the fuel liquid level is lower than the preset high liquid level;

[0036] When the user selects the automatic fuel pumping mode, real-time monitor the liquid level in the fuel tank. When the fuel liquid level is lower than the starting point of the fuel supply pump, turn on the fuel supply pump to automatically pump fuel into the fuel tank until the fuel liquid level is higher than the stopping point of the fuel supply pump, then turn off the fuel supply pump to stop pumping fuel.

[0037] The above technical solution of the present invention has the following advantages compared with the prior art:

[0038] Through the manual fuel pumping module and the automatic fuel pumping module, the present invention can not only automatically control the fuel supply pump to pump fuel, but also allow the user to manually control the fuel pumping, realizing the function of manual-automatic integration of fuel filling from the storage tank to the fuel tank and ensuring fuel supply. At the same time, by setting the low liquid level alarm module for the storage liquid level, pumping fuel is carried out when the liquid level in the storage tank does not fall below the preset low liquid level, avoiding the burning of the fuel supply pump; by setting the high liquid level alarm module for the fuel liquid level, pumping fuel is stopped when the liquid level in the fuel tank is higher than the preset high liquid level, avoiding the phenomenon of fuel tank overflow, playing a good protective role for the fuel supply pump, with simple operation and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to make the content of the present invention easier to be clearly understood, the present invention will be further described in detail below according to the specific embodiments of the present invention and in conjunction with the drawings.

[0040] Figure 1 is a schematic diagram of the specific process steps of the present invention,

[0041] Figure 2 is a schematic diagram of the principle of the structure of the present invention,

[0042] Figure 3It is a schematic diagram of the analog input setting of the unit controller in the embodiment of the present invention. Detailed implementation manners

[0043] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the illustrated embodiments are not intended to limit the present invention.

[0044] Embodiment 1

[0045] Refer to Figure 1 - Figure 2 As shown, the present invention discloses a manual and automatic integrated fuel pumping control system, including a low fuel level alarm module for the fuel storage tank, a high fuel level alarm module for the fuel tank, a manual and automatic fuel pumping selection module, a manual fuel pumping module, an automatic fuel pumping module, and a fuel supply pump start / stop module. The low fuel level alarm module for the fuel storage tank monitors the liquid level in the fuel storage tank in real time and issues an alarm when the liquid level in the fuel storage tank is lower than a preset low level; the high fuel level alarm module for the fuel tank monitors the liquid level in the fuel tank in real time and issues an alarm when the liquid level in the fuel tank is higher than a preset high level; the values of the preset low level and the preset high level are determined according to customer requirements or general industry rules and are set in cooperation with the liquid level sensor.

[0046] When the low fuel level alarm module for the fuel storage tank does not issue an alarm, the user selects to enter the manual fuel pumping mode or the automatic fuel pumping mode through the manual and automatic fuel pumping selection module. When the user selects the manual fuel pumping mode, the high fuel level alarm module for the fuel tank monitors the liquid level in the fuel tank in real time, and when the fuel level is lower than the preset high level, pumps fuel into the fuel tank according to the user's needs through the manual fuel pumping module. When the user selects the automatic fuel pumping mode, the fuel supply pump start / stop module monitors the liquid level in the fuel tank in real time. When the fuel level is lower than the fuel supply pump start point, the fuel supply pump start / stop module turns on the fuel supply pump, and the automatic fuel pumping module automatically pumps fuel into the fuel tank until the fuel level is higher than the fuel supply pump stop point, at which time the fuel supply pump start / stop module turns off the fuel supply pump to stop pumping.

[0047] In this embodiment, the low fuel level alarm module for the fuel storage tank includes a fuel storage liquid level sensor and a fuel storage alarm. The fuel storage liquid level sensor is arranged in the fuel storage tank, and the fuel storage liquid level sensor is connected to the fuel storage alarm. The fuel storage liquid level sensor monitors the liquid level in the fuel storage tank in real time, and when the liquid level in the fuel storage tank is lower than the preset low level, the fuel storage alarm issues an alarm.

[0048] In this embodiment, the oil storage liquid level sensor includes a floating ball, a metal rod, and a variable resistor. The floating ball floats on the surface of the fuel in the oil storage tank. One end of the metal rod is fixedly connected to the floating ball, and the other end of the metal rod is connected to the variable resistor through a movable contact. When the liquid level height of the fuel in the oil storage tank changes, the floating ball drives the metal rod to change the position of the movable contact on the variable resistor, and the resistance value of the variable resistor changes with different liquid level heights of the fuel in the oil storage tank. The variable resistor is connected to the oil storage alarm. When the resistance value of the variable resistor reaches the resistance value corresponding to the liquid level in the oil storage tank being lower than the preset low liquid level, the oil storage alarm emits an alarm.

[0049] In this embodiment, the high liquid level alarm module for the fuel liquid level includes a fuel liquid level sensor and an alarm. The fuel liquid level sensor is disposed in the fuel tank, and the fuel liquid level sensor is connected to the fuel alarm. The fuel liquid level sensor monitors the liquid level in the fuel tank in real time. When the liquid level in the fuel tank is higher than the preset high liquid level, the fuel alarm emits an alarm. The structure and principle of the fuel liquid level sensor are the same as those of the oil storage liquid level sensor and will not be elaborated here.

[0050] In this embodiment, the automatic fuel pumping module includes a unit controller and a fuel supply pump. The unit controller includes an output relay. The unit controller receives the fuel liquid level signal collected by the fuel liquid level sensor in real time. The unit controller controls the switch of the output relay according to the fuel liquid level signal, and the output relay controls the switch of the fuel supply pump.

[0051] In this embodiment, the unit controller controls the switch of the output relay according to the fuel liquid level signal. Specifically, the unit controller converts the fuel liquid level signal into an analog quantity represented by a percentage, and sets the fuel supply pump start point and the fuel supply pump stop point according to the magnitude of the analog quantity. When the magnitude of the analog quantity of the fuel liquid level signal is less than the fuel supply pump start point, the output relay is activated, and the output relay controls the fuel supply pump to pump fuel into the fuel tank. When the magnitude of the analog quantity of the fuel liquid level signal is greater than the fuel supply pump stop point, the output relay is turned off, and the output relay controls the fuel supply pump to stop pumping fuel.

[0052] As Figure 3As shown, in this embodiment, the unit controller sets 8 analog input points within the resistance value range of the variable resistor from 0Ω to 2500Ω to measure the fuel level, with the unit expressed in %. The values of the fuel supply pump start point and the fuel supply pump stop point are set according to the actual situation or user preferences to keep the fuel level at a preset level. For example, the fuel supply pump start point is set to 60% and the fuel supply pump stop point is set to 90%. When the remaining fuel in the fuel tank is less than 60%, the output relay controls the fuel supply pump to pump oil into the fuel tank until the remaining fuel in the fuel tank reaches 90% and the pump stops. When the fuel in the fuel tank is used up and is less than 60%, it pumps oil again to keep the fuel level between the preset 60% - 90%.

[0053] In this embodiment, the system further includes a protection relay, which is connected to the fuel supply pump and conducts when the fuel supply pump pumps oil. When the liquid level in the fuel tank is higher than the preset high liquid level, the protection relay is disconnected and the fuel supply pump stops pumping oil to prevent fuel tank overflow; when the liquid level in the storage tank is lower than the preset low liquid level, the protection relay is disconnected and the fuel supply pump stops pumping oil to prevent the fuel supply pump from burning out.

[0054] The unit controller disconnects the protection relay by receiving the low liquid level alarm signal of the storage oil level or the high liquid level alarm signal of the fuel level, and the main circuit of the fuel supply pump is disconnected, which plays a good role in protecting the fuel supply pump. The unit controller controls the output relay to achieve the function of automatic pumping oil by receiving the liquid level signal of the fuel level sensor.

[0055] In this embodiment, the manual / automatic pumping oil selection module includes an oil pump button, which is equipped with an oil pump indicator light. The oil pump button is a self-resetting button. When the user presses the oil pump button, it is in the manual pumping oil mode, and when the user does not press the oil pump button, it is in the automatic pumping oil mode. When the user presses the oil pump button, the fuel supply pump starts pumping oil; when the user continuously presses the oil pump button, the fuel supply pump continuously pumps oil and the oil pump indicator light is on; when the user releases the oil pump button, the manual pumping oil ends and the fuel supply pump stops pumping oil.

[0056] In this embodiment, the system further includes an intermediate relay and a normally open contact, and the normally open contact is arranged on the main return line of the fuel supply pump. When the intermediate relay is energized and attracted, the normally open contact closes, the fuel supply pump starts pumping oil, and the oil pump indicator light is on; when the intermediate relay is de-energized and reset, the normally open contact opens, the fuel supply pump stops pumping oil, and the oil pump indicator light is off. When the analog value of the fuel level signal is less than the starting point of the fuel supply pump, the intermediate relay is energized and attracted; when the analog value of the fuel level signal is greater than the stopping point of the fuel supply pump, the intermediate relay is de-energized and reset. When the oil pump button is in the pressed state, the intermediate relay is energized and attracted; when the oil pump button is released, the intermediate relay is de-energized and reset.

[0057] The manual oil pumping module and the automatic oil pumping module are provided with a 24V DC power supply by the unit battery, and the manual oil pumping function and the automatic oil pumping function are independent of each other. The self-resetting oil pump button is installed in parallel at both ends of the output relay of the unit controller. The user controls by himself when to start manual oil pumping, and when the fuel level is at the high level alarm, the fuel supply pump stops, the oil pump button indicator light goes out, and the user releases the oil pump button, and the manual oil pumping ends.

[0058] Embodiment Two

[0059] The present invention also discloses a manual-automatic integrated oil pumping control method, including: real-time monitoring of the liquid level in the storage tank and the fuel tank. When the liquid level in the storage tank is higher than the preset low level, the user selects to enter the manual oil pumping mode or the automatic oil pumping mode. When the user selects the manual oil pumping mode, the liquid level in the fuel tank is monitored in real time, and oil is pumped into the fuel tank according to the user's demand when the fuel level is lower than the preset high level. When the user selects the automatic oil pumping mode, the liquid level in the fuel tank is monitored in real time. When the fuel level is lower than the starting point of the fuel supply pump, the fuel supply pump is turned on to automatically pump oil into the fuel tank until the fuel level is higher than the stopping point of the fuel supply pump, and then the fuel supply pump is turned off to stop pumping oil.

[0060] 1. Through the manual oil pumping module and the automatic oil pumping module of the present invention, the fuel supply pump can be automatically controlled to pump oil, and the user can also manually control the oil pumping, realizing the function of manual-automatic integration of fuel filling from the storage tank to the fuel tank and ensuring fuel supply. At the same time, by setting the low liquid level alarm module for the storage liquid level, pumping oil is carried out when the liquid level in the storage tank is not lower than the preset low level, avoiding the burning of the fuel supply pump; by setting the high liquid level alarm module for the fuel level, pumping oil is stopped when the liquid level in the fuel tank is higher than the preset high level, avoiding the phenomenon of fuel tank overflow, and playing a good protective role for the fuel supply pump. The structure is simple, the operation is convenient, and the safety is high.

[0061] 2. By setting the starting point and stopping point of the fuel supply pump during the automatic fuel pumping process, the present invention keeps the fuel liquid level at a preset level, further improving the safety of the fuel tank. The present invention has been used in actual shelter products, and no phenomenon of burning of the fuel supply pump or fuel spillage from the fuel tank has occurred.

[0062] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A manual and automatic integrated pump oil control system, characterized in that: It includes a low fuel level alarm module for the oil storage tank, a high fuel level alarm module for the fuel tank, a manual / auto fuel pumping selection module, a manual fuel pumping module, an auto fuel pumping module, and a start / stop module for the fuel supply pump. The low fuel level alarm module for the oil storage tank monitors the liquid level in the oil storage tank in real time. When the liquid level in the oil storage tank is higher than the preset low level, the user selects to enter the manual fuel pumping mode or the auto fuel pumping mode through the manual / auto fuel pumping selection module. When the user selects the manual fuel pumping mode, the high fuel level alarm module for the fuel tank monitors the liquid level in the fuel tank in real time. When the fuel level is lower than the preset high level, the manual fuel pumping module pumps fuel into the fuel tank according to the user's demand. When the user selects the auto fuel pumping mode, the start / stop module for the fuel supply pump monitors the liquid level in the fuel tank in real time. When the fuel level is lower than the starting point of the fuel supply pump, the start / stop module for the fuel supply pump turns on the fuel supply pump, and the auto fuel pumping module automatically pumps fuel into the fuel tank; until the fuel level is higher than the stopping point of the fuel supply pump, the start / stop module for the fuel supply pump turns off the fuel supply pump to stop pumping.

2. The hand-operated and integrated pump oil control system according to claim 1, characterized in that: The low fuel level alarm module for the oil storage tank includes an oil storage liquid level sensor and an oil storage alarm. The oil storage liquid level sensor is set in the oil storage tank, and the oil storage liquid level sensor is connected to the oil storage alarm. The oil storage liquid level sensor monitors the liquid level in the oil storage tank in real time. When the liquid level in the oil storage tank is lower than the preset low level, the oil storage alarm gives an alarm.

3. The hand-operated and integrated pump oil control system according to claim 2, characterized in that: The oil storage liquid level sensor includes a floating ball, a metal rod, and a variable resistor. The floating ball floats on the surface of the fuel in the oil storage tank. One end of the metal rod is fixedly connected to the floating ball, and the other end of the metal rod is connected to the variable resistor through a movable contact. When the liquid level height of the fuel in the oil storage tank changes, the floating ball drives the metal rod to change the position of the movable contact on the variable resistor, and the resistance value of the variable resistor changes with different liquid level heights of the fuel in the oil storage tank.

4. The hand-operated and integrated pump oil control system according to claim 3, wherein: The high fuel level alarm module for the fuel tank includes a fuel liquid level sensor and a fuel alarm. The fuel liquid level sensor is set in the fuel tank, and the fuel liquid level sensor is connected to the fuel alarm. The fuel liquid level sensor monitors the liquid level in the fuel tank in real time. When the liquid level in the fuel tank is higher than the preset high level, the fuel alarm gives an alarm.

5. The hand-operated and integrated pump oil control system according to claim 4, characterized in that: The auto fuel pumping module includes a unit controller and a fuel supply pump. The unit controller includes an output relay. The unit controller receives the fuel level signal collected by the fuel liquid level sensor in real time. The unit controller controls the switch of the output relay according to the fuel level signal, and the output relay controls the switch of the fuel supply pump.

6. The hand-operated and integrated pump oil control system according to claim 5, characterized in that: The unit controller controls the switch of the output relay according to the fuel level signal, specifically: The unit controller converts the fuel level signal into an analog quantity represented by a percentage, and sets the starting point and the stopping point of the fuel supply pump according to the magnitude of the analog quantity. When the analog value of the fuel level signal is less than the starting point of the fuel supply pump, the output relay is activated, and the output relay controls the fuel supply pump to pump fuel into the fuel tank; When the analog value of the fuel level signal is greater than the stopping point of the fuel supply pump, the output relay is turned off, and the output relay controls the fuel supply pump to stop pumping fuel.

7. The hand-operated and integrated pump oil control system according to claim 5, wherein: It also includes a protection relay, The protection relay is connected to the fuel supply pump, and the protection relay is turned on when the fuel supply pump pumps fuel; When the liquid level in the fuel tank is higher than the preset high liquid level, the protection relay is disconnected, and the fuel supply pump stops pumping fuel to prevent the fuel tank from overflowing; When the liquid level in the storage tank is lower than the preset low liquid level, the protection relay is disconnected, and the fuel supply pump stops pumping fuel to prevent the fuel supply pump from burning.

8. The hand-operated and integrated pump oil control system according to claim 6, characterized in that: The manual / auto fuel pumping selection module includes a fuel pump button, and the fuel pump button is equipped with a fuel pump indicator light, The fuel pump button is a self-resetting button. When the user presses the fuel pump button, it is in the manual fuel pumping mode. When the user does not press the fuel pump button, it is in the automatic fuel pumping mode; When the user presses the fuel pump button, the fuel supply pump starts pumping fuel; when the user continuously presses the fuel pump button, the fuel supply pump continuously pumps fuel, and the fuel pump indicator light is on; when the user releases the fuel pump button, the manual fuel pumping ends, and the fuel supply pump stops pumping fuel.

9. The hand-operated and integrated pump oil control system according to claim 8, wherein: It also includes an intermediate relay and a normally open contact, and the normally open contact is arranged on the main return path of the fuel supply pump; When the intermediate relay is energized and attracted, the normally open contact closes, the fuel supply pump starts pumping fuel, and the fuel pump indicator light is on; when the intermediate relay is de-energized and reset, the normally open contact opens, the fuel supply pump stops pumping fuel, and the fuel pump indicator light goes out; When the analog value of the fuel level signal is less than the starting point of the fuel supply pump, the intermediate relay is energized and attracted; when the analog value of the fuel level signal is greater than the stopping point of the fuel supply pump, the intermediate relay is de-energized and reset; When the fuel pump button is in the pressed state, the intermediate relay is energized and attracted; when the fuel pump button is released, the intermediate relay is de-energized and reset.

10. A manual and automatic integrated pump oil control method, characterized in that, It includes: Real-time monitor the liquid levels in the storage tank and the fuel tank. When the liquid level in the storage tank is higher than the preset low liquid level, the user can choose to enter the manual fuel pumping mode or the automatic fuel pumping mode; When the user selects the manual fuel pumping mode, real-time monitor the liquid level in the fuel tank, and pump fuel into the fuel tank according to the user's needs when the fuel level is lower than the preset high liquid level; When the user selects the automatic fuel pumping mode, real-time monitor the liquid level in the fuel tank. When the fuel level is lower than the starting point of the fuel supply pump, turn on the fuel supply pump to automatically pump fuel into the fuel tank until the fuel level is higher than the stopping point of the fuel supply pump, then turn off the fuel supply pump to stop pumping fuel.

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