A device for replenishing a domestic oil tank by level control
The oil replenishment device for the daily oil tank with liquid level control solves the problem of insufficient oil supply, ensures smooth oil circuit and continuous operation of the generator, and is suitable for oil supply systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING ZHONGKE HEYING DATA TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-03
AI Technical Summary
When the existing diesel supply system has an unbalanced flow distribution, the daily fuel tanks of branches with higher resistance cannot be replenished in time, resulting in poor fuel supply and potentially causing generator set shutdown.
Design a daily fuel tank replenishment device controlled by liquid level, including a pump assembly, a replenishment assembly, a liquid level sensor and a controller. Through multi-line fuel supply and liquid level monitoring, prioritize fuel supply to fuel tanks below the danger level line to ensure unobstructed fuel flow.
This ensures smooth oil flow, prevents generator set shutdowns, guarantees continuous generator operation, and is suitable for industry promotion.
Smart Images

Figure CN224450306U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil supply system technology, specifically to a daily oil tank replenishment device that controls the liquid level. Background Technology
[0002] The data center is equipped with a diesel fuel supply system for fueling diesel generator sets used in emergency power generation. The system delivers diesel fuel from an outdoor diesel storage tank to the daytime fuel tank on the generator set side via a fuel pump.
[0003] The existing diesel fuel supply system controls the opening and closing of electric valves on the inlet pipes of each day fuel tank based on changes in the fuel level, and interlocks this control to start and stop the fuel supply pump. "Low level" and "high level" settings are set in each day fuel tank. "Low level" controls the opening of the electric valve on the inlet pipe, and "high level" controls the closing of the electric valve. When any one electric valve is open, the fuel supply pump starts; when all electric valves are closed, the fuel supply pump stops.
[0004] Existing technology cannot guarantee timely replenishment of daily oil tanks located on branches with high pipeline resistance. Due to the unbalanced flow distribution in the system, branches with lower resistance have higher flow rates, and their daily oil tanks only stop replenishing when they reach a "high level." Therefore, even if the daily oil tank level on branches with higher pipeline resistance is below the "low level," it may not receive replenishment for a considerable period or the replenishment amount may be less than the consumption. This results in incomplete oil supply.
[0005] Therefore, we propose a fuel replenishment device for daily fuel tanks that controls the liquid level, which can effectively ensure smooth fuel flow. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides a daily fuel tank replenishment device that controls the liquid level to ensure smooth oil flow and stable oil supply during the replenishment process.
[0007] This utility model provides a daily fuel tank replenishment device controlled by liquid level, comprising: a pumping assembly, which includes an oil storage tank and a supply pump, one end of which extends into the oil storage tank and is used for pumping oil; and a replenishment assembly, which is provided at least once, with one end of each assembly connected to the pumping assembly and the other end of each assembly connected to an external generator; the replenishment assembly includes a daily fuel tank, an electric valve, and a liquid level sensor; one end of the daily fuel tank is connected to the external generator; the liquid level sensor is installed inside the daily fuel tank, and the electric valve is located at the inlet of the daily fuel tank; the liquid level sensor is used to monitor changes in the liquid level in the daily fuel tank; wherein, from top to bottom, the surface of the daily fuel tank is provided with a high liquid level line, a temporary protection liquid level line, a low liquid level line, and a danger liquid level line; when the liquid level of one of the daily fuel tanks is lower than the danger liquid level line, the electric valve of that daily fuel tank is closed; and the other daily fuel tank supplies fuel to the external generator.
[0008] Furthermore, the oil pump assembly has two locations, each connected to one of the two oil replenishment assemblies. In practical applications, the purpose of this design is to achieve multi-line oil supply, preventing the generator from stopping due to insufficient oil in the daily oil tank during actual operation.
[0009] Furthermore, two electric valves are provided, each installed on one of the two daily fuel tanks; and the electric valves are used to open and close the daily fuel tanks. In practical applications, the purpose of this design is to control the daily fuel tanks separately; in this way, separate passages can be achieved for the two daily fuel tanks, preventing the power supply from stopping due to the reduction of fuel in the daily fuel tanks.
[0010] Furthermore, the electric valve is connected to the other end of the oil supply pump. In practical applications, the purpose of this design is to ensure unobstructed oil flow.
[0011] Furthermore, it also includes a pipeline, one end of which is connected to the oil supply pump, and the other end of which is connected to the electric valve. In practical applications, this pipeline is used for connection, to ensure unobstructed oil flow.
[0012] Furthermore, it also includes a control unit, which is electrically connected to the electric valve, the liquid level sensor, and the oil supply pump. In practical applications, the purpose of this design is to ensure control. First, the liquid level sensor performs daily monitoring of the aforementioned daily oil tanks, effectively ensuring real-time information transmission. This real-time information is then transmitted to the control unit, which issues working commands to the electric valve and the oil supply pump. Specifically, when the liquid level in one of the daily oil tanks falls below the danger level line, the other daily oil tank is activated to supply oil, and the connected oil supply pump is also activated to supply oil.
[0013] As can be seen from the above technical solution, the beneficial effects of the oil replenishment device for daily use oil tanks controlled by liquid level provided by this utility model are as follows:
[0014] (1) In actual operation, when the level of one of the daily oil tanks reaches the "danger level line", the control system will close the electric valves of all daily oil tanks that have reached or exceeded the "temporary protection level line" at that moment, and only supply oil to the daily oil tanks at the "danger level". After the level of the daily oil tank at the "danger level" reaches the "temporary protection level", the system will return to the original control logic.
[0015] (2) In this way, the oil tank supply design that prioritizes the oil tank supply to the dangerous liquid level line can effectively replace the traditional oil tank supply design that does not distinguish priorities, thus avoiding the occurrence of generator set shutdown due to oil replenishment during the power generation process.
[0016] (3) At the same time, the multiple liquid level warnings provided early warnings, effectively ensuring the continuous oil supply and enabling the generator to work continuously; therefore, this device is suitable for industry promotion. Attached Figure Description
[0017] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments or prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to scale.
[0018] Figure 1 A schematic diagram of a fuel replenishment device for a daily fuel tank controlled by liquid level, provided for an embodiment of this utility model;
[0019] Figure 2 for Figure 1 The front view of the daytime fuel tank is shown;
[0020] Figure 3 This is a schematic diagram of the workflow of this utility model;
[0021] Figure 4 A schematic diagram showing the fuel level for a traditional daytime fuel tank.
[0022] Figure label:
[0023] Oil pump assembly 1, oil storage tank 11, oil supply pump 12, oil replenishment assembly 2, daily oil tank 21, electric valve 22, liquid level sensor 23, high liquid level line 201, temporary backup liquid level line 202, low liquid level line 203, danger liquid level line 204, pipeline 3, control unit 4, generator 500. Detailed Implementation
[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0025] The basic implementation examples are as follows: Figures 1 to 4 As shown:
[0026] like Figures 1-4 As shown in the figure, this embodiment provides a daily fuel tank replenishment device that controls the liquid level, which can ensure smooth oil flow during the replenishment process and guarantee stable oil supply.
[0027] This utility model provides a daily fuel tank replenishment device controlled by liquid level, comprising: a pumping assembly 1, which includes an oil storage tank 11 and an oil supply pump 12, one end of which extends into the oil storage tank 11 and is used for pumping oil; and a replenishment assembly 2, which is provided at least once, with one end communicating with the pumping assembly 1 and the other end communicating with an external generator 500; the replenishment assembly 2 includes a daily fuel tank 21, an electric valve 22, and a liquid level sensor 23; one end of the daily fuel tank 21 is connected to the external generator 500; A level sensor 23 is installed inside the daily fuel tank 21, and an electric valve 22 is located at the inlet of the daily fuel tank 21. The level sensor 23 is used to monitor changes in the liquid level within the daily fuel tank 21. From top to bottom, the surface of the daily fuel tank 21 is marked with a high level line 201, a temporary safety level line 202, a low level line 203, and a danger level line 204. When the liquid level in one of the daily fuel tanks 21 falls below the danger level line 204, the electric valve 22 of that daily fuel tank 21 is closed, and fuel is supplied to the external generator 500 from another daily fuel tank 21. In actual operation, once the liquid level in one of the daily fuel tanks 21 reaches the "danger level line 204," the control system closes all electric valves 22 of the daily fuel tanks 21 that have reached or exceeded the "temporary safety level line 202," supplying fuel only to the daily fuel tank 21 at the "danger level." Once the daily fuel tank 21, which is at a "dangerous level," reaches the "temporary backup level," the system reverts to its original control logic. This prioritizes fuel supply to tanks reaching the danger level, effectively replacing the traditional design that doesn't prioritize fuel supply to tanks. This avoids generator shutdowns caused by refueling during power generation. Furthermore, the multiple level warnings provide early warnings, ensuring continuous fuel supply and enabling the generator to operate continuously. Therefore, this device is suitable for industry-wide adoption.
[0028] In this embodiment, the oil pump assembly 1 is provided in two locations, and each is connected to one of the two oil replenishment assemblies 2. In practical applications, the purpose of this design is to achieve multi-line oil supply and prevent the generator 500 from stopping work due to insufficient oil in the daily oil tank 21 during actual operation.
[0029] In this embodiment, two electric valves 22 are provided and are respectively installed on the two daily fuel tanks 21; and the electric valves 22 are used to open and close the daily fuel tanks 21. In practical applications, the purpose of this design is to control the daily fuel tanks 21 separately; in this way, separate passages can be achieved for the two daily fuel tanks 21, avoiding the interruption of power supply due to the reduction of oil in the daily fuel tanks 21.
[0030] In this embodiment, the electric valve 22 is connected to the other end of the oil supply pump 12. In practical applications, the purpose of this design is to ensure unobstructed oil flow.
[0031] In this embodiment, a pipeline 3 is also included. One end of the pipeline 3 is connected to the oil supply pump 12, and the other end of the pipeline 3 is connected to the electric valve 22. In practical applications, this pipeline 3 is used for connection to ensure unobstructed oil flow.
[0032] In this embodiment, a control unit 4 is also included, which is electrically connected to the electric valve 22, the liquid level sensor 23, and the oil supply pump 12. In practical applications, the purpose of this design is to ensure control. First, the liquid level sensor 23 performs daily monitoring of the daily oil tank 21, effectively ensuring real-time information transmission. This real-time information is then transmitted to the control unit 4, which issues working commands to the electric valve 22 and the oil supply pump 12. Specifically, when the liquid level in one of the daily oil tanks 21 falls below the danger level line 204, the other daily oil tank 21 is activated to supply oil, and the connected oil supply pump 12 is also activated to supply oil.
[0033] In summary, this oil replenishment device for daily oil tanks controlled by liquid level is not only reasonably designed but also simple to operate. It can effectively achieve continuous oil replenishment, ensure smooth oil flow during the replenishment process, guarantee stable oil supply, and ultimately achieve sustainable power generation of the generator. Therefore, this device is suitable for industry promotion.
[0034] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A device for refilling a domestic oil tank by level control, characterized in that include: An oil pumping assembly, comprising an oil storage tank and an oil supply pump, wherein one end of the oil supply pump extends into the oil storage tank and is used for pumping oil; and The oil replenishment assembly is provided at least once, with one end connected to the oil pump assembly and the other end connected to an external generator. The refueling assembly includes a day-use fuel tank, an electric valve, and a level sensor; one end of the day-use fuel tank is connected to an external generator; the level sensor is installed inside the day-use fuel tank, and the electric valve is located at the inlet of the day-use fuel tank; the level sensor is used to monitor changes in the level of the fuel in the day-use fuel tank. The surface of the daily fuel tank is provided with a high level line, a temporary protection level line, a low level line, and a danger level line from top to bottom. When the level of one of the daily fuel tanks is lower than the danger level line, the electric valve of the daily fuel tank is closed. Fuel is supplied to the external generator from the other daily fuel tank.
2. A device for refilling a domestic oil tank by level control according to claim 1, characterized in that The oil pump assembly is provided in two locations, and is connected to the two oil replenishment assemblies respectively.
3. A device for refilling a domestic oil tank by level control according to claim 1, characterized in that There are two electric valves, which are respectively installed on the two daily fuel tanks; and the electric valves are used to open and close the daily fuel tanks.
4. The fuel replenishment device for a daily fuel tank controlled by liquid level according to claim 1, characterized in that, The electric valve is connected to the other end of the oil supply pump.
5. The oil replenishing device for daily oil tank by liquid level control according to claim 1, characterized in that, It also includes a pipeline, one end of which is connected to the oil supply pump, and the other end of which is connected to the electric valve.
6. A device for refilling a domestic oil tank by level control according to claim 1, characterized in that It also includes a control unit, which is electrically connected to the electric valve, the level sensor and the oil supply pump respectively.