阅读说明：本技术 一种大型数据中心智能燃油控制系统及方法 (Intelligent fuel control system and method for large data center ) 是由 应南娇 莫秋思 刘文佳 于 2021-07-28 设计创作，主要内容包括：本发明公开了一种大型数据中心智能燃油控制系统及方法,包括燃油供应模块和燃油控制模块,所述燃油供应模块包括储油油罐单元、日用油箱单元和供油管路切换单元,以及一种大型数据中心智能燃油控制方法。本发明通过供油管路切换单元切换供油管道,使另一个油罐负责所有日用油箱的供油,主控子模块设置冗余控制单元作为主控单元的备份,当主控单元故障时程序及控制自动切换到冗余控制单元中执行,通过液位检测子模块对储油油罐单元和日用油箱单元油量液位进行检测,当油量达到不同的检测标准时通过控制子模块对供油阀和进油阀进行管控,还可设置报警装置,进而加强了对供油系统的检测和保护,降低了供油系统故障率。(The invention discloses an intelligent fuel control system and method for a large-scale data center, which comprises a fuel supply module and a fuel control module, wherein the fuel supply module comprises an oil storage tank unit, a daily oil tank unit and an oil supply pipeline switching unit, and the intelligent fuel control method for the large-scale data center. According to the invention, the oil supply pipeline is switched by the oil supply pipeline switching unit, so that the other oil tank is responsible for supplying oil to all the daily oil tanks, the main control submodule is provided with the redundancy control unit as a backup of the main control unit, when the main control unit fails, the program and control are automatically switched into the redundancy control unit to be executed, the oil quantity liquid levels of the oil storage oil tank unit and the daily oil tank unit are detected by the liquid level detection submodule, when the oil quantity reaches different detection standards, the oil supply valve and the oil inlet valve are controlled by the control submodule, and the oil supply system can be further provided with the alarm device, so that the detection and the protection of the oil supply system are enhanced, and the failure rate of the oil supply system is reduced.)

1. An intelligent fuel control system of a large-scale data center is characterized by comprising a fuel supply module and a fuel control module, the fuel supply module comprises a fuel storage tank unit (2), a daily fuel tank unit (3) and a fuel supply pipeline switching unit (4), the oil storage tank unit (2) is connected with the daily oil tank unit (3) through the oil supply pipeline switching unit (4), the fuel control module comprises a main control submodule, a liquid level detection submodule and a control submodule, the main control unit (11) is respectively connected with the liquid level detection unit and the control submodule, the liquid level detection unit is respectively connected with the oil storage tank unit (2) and the daily oil tank unit (3), the control submodule is respectively connected with the oil storage tank unit (2), the daily oil tank unit (3) and the oil supply pipeline switching unit (4).

2. A large data center intelligent fuel control system according to claim 1, further comprising an emergency oil return module (1), wherein the emergency oil return module (1) is connected to the oil storage tank unit (2) and the daily oil tank unit (3), respectively.

3. The large data center intelligent fuel control system according to claim 1 or 2, wherein the liquid level detection submodule comprises an oil storage tank liquid level detection unit (5) and a daily fuel tank liquid level detection unit (6), the oil storage tank liquid level detection unit (5) is connected with the oil storage tank unit (2), and the daily fuel tank liquid level detection unit (6) is connected with the daily fuel tank unit (3).

4. A large data center intelligent fuel control system according to claim 1 or 2, characterized in that the oil storage tank unit (2) comprises at least two oil storage tanks, and each oil storage tank is provided with two oil supply pumps.

5. The large-scale data center intelligent fuel control system according to claim 3, wherein the control submodule comprises an oil storage tank oil supply control unit (7), a pipeline switching control unit (8), a daily oil tank oil supply control unit (9) and an oil return control unit (10), the oil storage tank oil supply control unit (7) is connected with the oil storage tank unit (2), the pipeline switching control unit (8) is connected with the oil supply pipeline switching unit (4), the daily oil tank oil supply control unit (9) is connected with the daily oil tank unit (3), and the oil return control unit (10) is connected with the emergency oil return module (1).

6. The large data center intelligent fuel control system according to claim 1, 2 or 5, wherein the main control submodule comprises a main control unit (11) and a redundant control unit (12), the main control unit (11) and the redundant control unit (12) are both connected with the liquid level detection submodule, and the main control unit (11) and the redundant control unit (12) are both connected with the control submodule.

7. The intelligent fuel control system for the large data center according to claim 6, wherein the main control submodule further comprises a display unit (13) for displaying the system operation state and corresponding parameters, and the display unit (13) is connected with the main control unit (11).

8. The intelligent fuel control system for the large-scale data center according to claim 3, wherein the daily fuel tank liquid level detection unit (6) is provided with four detection gears, and the four detection gears are respectively: an emergency oil return gear, a daily oil tank inlet valve closing gear, a daily oil tank inlet valve opening gear and a low oil quantity warning gear.

9. An intelligent fuel control method for a large data center by using the system as claimed in any one of claims 1 to 8, characterized by comprising the following steps:

s1: the liquid level condition of the daily oil tank is detected by a daily oil tank liquid level detection unit (6);

s2: when the liquid level of the daily oil tank is detected to reach an emergency oil return gear, oil is discharged for the daily oil tank through an oil return control unit (10) and is prompted;

s3: when the liquid level of the daily oil tank is detected to reach the closing gear of the oil inlet valve of the daily oil tank, the oil inlet valve of the daily oil tank is closed through the oil supply control unit (7) of the oil storage tank, and the oil supply valve of the oil storage tank is closed through the oil inlet control unit (9) of the daily oil tank;

s4: when the liquid level of the daily oil tank is detected to reach the opening gear of the oil inlet valve of the daily oil tank, the oil inlet valve of the daily oil tank is opened through the oil inlet control unit (9) of the daily oil tank, and the oil supply valve of the oil storage tank is opened through the oil supply control unit (7) of the oil storage tank;

s5: when the liquid level of the daily oil tank reaches the low oil quantity warning gear, the daily oil tank is warned on site to prompt that the oil is short.

Technical Field

The invention relates to the technical field of motors, in particular to an intelligent fuel control system and method for a large-scale data center.

Background

A large-scale data center park has many single buildings and large total power consumption, the power center is arranged in a centralized manner in the current park, a high-voltage diesel generator set is arranged in the power center, and the high-voltage diesel generator set is connected in parallel to supply power for the backup of the data center. The number of diesel generator sets arranged in the power center is generally large, and the total storage capacity of each daily fuel chamber is required to be not more than 1m3 according to GB 50016-2014' design Specification for fire protection of buildings; and the technical requirement of a machine room A in GB50174-2017 data center design Specification meets the requirement of the fuel storage capacity of the diesel generator for 12h of oil. The data center generally adopts the oil storage mode of buried oil tank + a plurality of daily fuel tanks to solve the diesel generating set fuel feeding problem, but most of present fuel control systems have the problem that the structure is simpler, the detection means to the oil tank is single, and the oil feeding system is easy to break down.

As in chinese patent CN111504627A, published 2020, 8/7, a fuel control system for regulating fuel supplied to cylinders of an internal combustion engine during engine starting and cranking to a transitional operating condition, comprising: a first module that determines a raw injected fuel mass based on a utilized fuel fraction model and a nominal fuel dynamics model; and a second module that regulates fueling of the engine cylinder based on the mass of the initially injected fuel until a combustion event of the cylinder begins; wherein each of the percentage fuel and the nominal fuel dynamics model is calibrated based on data from a plurality of test launches, the plurality of test launches being based on a predetermined test schedule. But its system structure is simple, and the detection mode to the oil tank is single, leads to the easy problem that breaks down of oil feeding system.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the technical problem that the oil supply system is prone to failure due to the fact that the existing fuel control system is single in detection and protection means for the oil supply system. The intelligent fuel control system and method for the large-scale data center are capable of enhancing detection and protection of an oil supply system and further reducing the fault rate of the oil supply system.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a large-scale data center intelligence fuel control system, includes fuel supply module and fuel control module, the fuel supply module includes oil storage oil tank unit, daily oil tank unit and supplies oil pipe way switching unit, oil storage oil tank unit passes through supply oil pipe way switching unit with daily oil tank unit connection, fuel control module includes main control submodule piece, liquid level detection submodule piece and control submodule piece, the main control unit respectively with the liquid level detection unit with control submodule piece connects, the liquid level detection unit respectively with oil storage oil tank unit with daily oil tank unit connection, control submodule piece respectively with oil storage oil tank unit daily oil tank unit with supply oil pipe way switching unit connection. The daily oil tank unit is used for connecting the generator set and is used for daily oil consumption of the generator set.

An intelligent fuel control system for large-scale data center features that the oil storage tanks of fuel supply module are arranged in the spare oil storage tanks for supplying oil to daily oil tank, the oil supply pipeline can be switched by the oil supply pipeline switching unit, so that the other oil tank is in charge of oil supply of all the daily oil tanks, the main control submodule is provided with a redundancy control unit as a backup of the main control unit, when the main control unit is in fault, the program and control are automatically switched to the redundancy control unit to be executed, the oil quantity and liquid level of the oil storage tank unit and the daily oil tank unit are detected by the liquid level detection submodule, when the oil quantity reaches different detection standards, the oil supply valve of the oil storage tank unit and the oil inlet valve of the daily oil tank unit are controlled through the control submodule, and meanwhile, an alarm device can be arranged to remind workers when necessary.

Preferably, the system further comprises an emergency oil return module, and the emergency oil return module is respectively connected with the oil storage tank unit and the daily oil tank unit.

The oil storage tank of each daily oil tank oil storage tank unit of the daily oil tank unit is connected through the emergency oil return module, namely 1 set of emergency oil return pump can be arranged between each fuel oil, an oil valve and the oil return pump in the emergency oil return module can be linked with a fire-fighting system, and the fire-fighting system should send a dry node signal to an oil supply control system under emergency conditions such as fire and the like; when the oil supply control system receives a fire alarm signal between the daily oil tanks, an emergency oil return valve leading to an underground oil tank and a corresponding oil return pump can be opened remotely or manually to empty the fuel oil in the corresponding daily oil tank; when the oil supply control system detects a fire alarm signal in the generator room, the control system can remotely or manually close the emergency cut-off valve on the oil supply main pipe of the daily oil tank and stop the normal action of the oil supply pump.

Preferably, the liquid level detection submodule comprises an oil storage tank liquid level detection unit and a daily oil tank liquid level detection unit, the oil storage tank liquid level detection unit is connected with the oil storage tank unit, and the daily oil tank liquid level detection unit is connected with the daily oil tank unit.

Oil level control: when the oil is normally supplied, the oil supply pump is started to supply oil to the daily oil tank, when a certain daily oil tank reaches the highest liquid level, the electromagnetic valve on the oil supply branch pipe of the oil tank is automatically closed, and when the last oil tank received reaches the highest liquid level, the oil supply pump is automatically closed. When the oil is supplied and the liquid level of the working oil storage tank reaches the lowest liquid level, the oil supply pump of the reserve oil tank can be automatically started in sequence.

The oil storage tank liquid level detection unit can be provided with two remote liquid level meters on the oil tank, and each liquid level meter is provided with two alarm liquid levels of high and low liquid levels; the daily oil tank liquid level detection unit can be provided with four liquid levels of high, low and low in the daily oil tank. When the liquid level control of the daily oil tank fails or a fire alarm occurs, the fire control center signal turns off the oil supply pump, simultaneously turns on the electromagnetic valve of the oil discharge branch pipe of the daily oil tank and the emergency oil return pump, and the oil is discharged to the oil storage tank through the emergency oil return pump.

Preferably, the oil storage tank unit comprises at least two oil storage tanks, and each oil storage tank is provided with two oil supply pumps.

Each oil storage tank is provided with 2 oil-submerged pumps (explosion-proof type), for example, the No. 1 oil tank can be responsible for 1# -8# of the daily fuel chamber during normal use, and the No. 2 oil tank can be responsible for 9# -16# of the daily fuel chamber; two oil tank oil supply pipelines set up reserve switching in the oil pump room, and when a certain oil storage tank did not have oil like No. 2 oil tanks oil, can open reserve electric ball pump, through supply oil pipeline switching unit switch-on reserve supply oil pump and supply oil pipeline, be responsible for all units by 1 oil tank. Each submersible pump can meet the oil consumption of 8 generators running at full load.

Preferably, the control submodule includes oil storage tank fuel feeding control unit, pipeline switching control unit, daily oil tank oil feed control unit and oil return control unit, oil storage tank fuel feeding control unit with oil storage tank unit connection, pipeline switching control unit with oil supply pipeline switching unit connection, daily oil tank oil feed control unit with daily oil tank unit connection, oil return control unit with the urgent oil return module is connected. The control submodule comprises control valve switches arranged on an oil storage tank, a daily oil tank and an oil supply pipeline.

Preferably, the main control sub-module comprises a main control unit and a redundant control unit, the main control unit and the redundant control unit are both connected with the liquid level detection sub-module, and the main control unit and the redundant control unit are both connected with the control sub-module.

The oil supply control system is provided with a main PLC (programmable logic controller), namely a main control unit, and a redundant PLC, namely a redundant control unit, which is used for controlling the electromagnetic switch valve by the auxiliary control submodule. The function switching between the main PLC and the redundant PLC can be automatically completed, and the main PLC operates and executes related programs under normal conditions; when the main PLC fails, the program and control should be automatically switched to the redundant PLC for execution, and the failure of a single main PLC does not affect the use of the whole system.

A plurality of unit small PLC can be arranged, the main PLC control cabinet is arranged in the auxiliary room control room, and each unit PLC controller is arranged at the outlet of the daily oil tank; all PLC controllers need to have independent CPUs and memories, and the PLC controllers can independently execute related programs or codes. The stored program can be automatically started to be executed after the power failure of each PLC is recovered; the internal operation data related to each unit PLC can be transmitted to the main or redundant main PLC through a bus form;

preferably, the main control sub-module further comprises a display unit for displaying the system running state and corresponding parameters, and the display unit is connected with the main control unit. The main PLC, namely the main control unit control cabinet, is provided with an operation display screen, namely a display unit, for operation and maintenance personnel to operate and check the operation state of the system, and the operation display screen can display the operation state and corresponding parameters of the whole oil supply control system. The display unit can be provided with a standby connecting line to be connected with the redundancy control unit.

Preferably, the daily oil tank liquid level detection unit is provided with four detection gears, and the four detection gears are respectively: an emergency oil return gear, a daily oil tank inlet valve closing gear, a daily oil tank inlet valve opening gear and a low oil quantity warning gear. Can set up different liquid level height as detecting the gear, for example set up urgent oil return gear and reach the nine tenth that the oil mass accounts for 90% oil tank volume that the daily oil tank height reaches for the liquid level, set up daily oil tank admission valve and close the eight ten tenth that the gear liquid level height is the daily oil tank height, set up daily oil tank admission valve and open the five tenth that the gear liquid level height is the daily oil tank height, set up the low oil mass and report an emergency and ask for help or increased vigilance the gear liquid level height and be two tenths of the daily oil tank height.

A large-scale data center intelligent fuel control method utilizes the system and comprises the following steps:

s1: detecting the liquid level condition of the daily oil tank by a daily oil tank liquid level detection unit;

s2: when the liquid level of the daily oil tank is detected to reach an emergency oil return gear, oil is discharged for the daily oil tank through the oil return control unit and is prompted;

s3: when the liquid level of the daily oil tank reaches the closing gear of the oil inlet valve of the daily oil tank, the oil inlet valve of the daily oil tank is closed through the oil supply control unit of the oil storage tank, and the oil supply valve of the oil storage tank is closed through the oil inlet control unit of the daily oil tank;

s4: when the liquid level of the daily oil tank reaches the opening gear of the oil inlet valve of the daily oil tank, the oil inlet valve of the daily oil tank is opened through the oil inlet control unit of the daily oil tank, and the oil supply valve of the oil storage tank is opened through the oil supply control unit of the oil storage tank;

s5: when the liquid level of the daily oil tank reaches the low oil quantity warning gear, the daily oil tank is warned on site to prompt that the oil is short.

When normal, each underground oil tank is responsible for supplying oil to 8 daily oil tank boxes; when the oil storage tank liquid level detection unit detects that any one of the underground oil tanks is lack of oil, the communicated pipelines can be switched to one oil tank by the oil supply pipeline switching unit to be responsible for oil supply of all the daily oil tanks. When the liquid level detection unit of the oil storage tank detects that the liquid level reaches the low liquid level of the oil tank through the liquid level sensor of the No. 1 underground oil tank, the oil supply pump corresponding to the oil tank is automatically closed, the oil supply pump of the No. 2 oil tank is simultaneously opened, and the No. 2 oil tank starts to supply oil.

The substantial effects of the invention are as follows: the oil storage tank unit of the fuel supply module is provided with a plurality of oil storage tanks which are mutually standby, the oil storage tanks share the task of supplying oil to the daily oil tank, when any oil storage tank is oil-free, the oil supply pipeline can be switched by the oil supply pipeline switching unit, so that the other oil tank is responsible for supplying oil to all the daily oil tanks, the main control submodule is provided with the redundancy control unit as the backup of the main control unit, when the main control unit fails, the program and control are automatically switched into the redundancy control unit to be executed, the oil level of the oil storage tank unit and the oil level of the daily oil tank unit are detected by the liquid level detection submodule, when the oil level reaches different detection standards, the oil supply valve of the oil storage tank unit and the oil inlet valve of the daily oil tank unit are controlled by the control submodule, meanwhile, the alarm device can be arranged, the staff can be reminded if necessary, and the detection and the protection of the oil supply system are further enhanced, the fault rate of the oil supply system is reduced.

Drawings

Fig. 1 is a schematic composition diagram of the present embodiment.

Wherein: 1. the emergency oil return module comprises an emergency oil return module 2, an oil storage tank unit 3, a daily oil tank unit 4, an oil supply pipeline switching unit 5, an oil storage tank liquid level detection unit 6, a daily oil tank liquid level detection unit 7, an oil storage tank oil supply control unit 8, a pipeline switching control unit 9, a daily oil tank oil inlet control unit 10, an oil return control unit 11, a main control unit 12, a redundancy control unit 13 and a display unit.

Detailed Description

The following provides a more detailed description of the present invention, with reference to the accompanying drawings.

The utility model provides a large-scale data center intelligence fuel control system, as shown in figure 1, includes fuel supply module and fuel control module, and the fuel supply module includes oil storage tank unit 2, daily oil tank unit 3 and supplies oil pipeline switching unit 4, and oil storage tank unit 2 includes two at least oil storage tanks, all is equipped with two on every oil storage tank and supplies the oil pump. Each oil storage tank is provided with 2 oil-submerged pumps (explosion-proof type), for example, the No. 1 oil tank can be responsible for 1# -8# of the daily fuel chamber during normal use, and the No. 2 oil tank can be responsible for 9# -16# of the daily fuel chamber; two oil tank oil supply pipelines set up reserve switching in the oil pump room, and when a certain oil storage tank did not have oil like No. 2 oil tanks, can open reserve electric ball pump, switch on reserve oil supply pump and oil supply pipeline through oil supply pipeline switching unit 4, be responsible for all units by 1 oil tank. Each submersible pump can meet the oil consumption of 8 generators running at full load. The oil storage tank unit 2 is connected with the daily oil tank unit 3 through the oil supply pipeline switching unit 4, and the daily oil tank unit 3 is used for connecting the generator set and is used for daily oil consumption of the generator set.

The fuel control module comprises a main control submodule, a liquid level detection submodule and a control submodule, a main control unit 11 is respectively connected with the liquid level detection unit and the control unit,

the main control submodule comprises a main control unit 11 and a redundancy control unit 12, the main control unit 11 and the redundancy control unit 12 are both connected with the liquid level detection submodule, and the main control unit 11 and the redundancy control unit 12 are both connected with the control submodule. The oil supply control system is provided with a main PLC (programmable logic controller), namely a main control unit 11, and a redundant PLC, namely a redundant control unit 12, which is used for controlling the electromagnetic switch valve by the auxiliary control sub-module. The function switching between the main PLC and the redundant PLC can be automatically completed, and the main PLC operates and executes related programs under normal conditions; when the main PLC fails, the program and control should be automatically switched to the redundant PLC for execution, and the failure of a single main PLC does not affect the use of the whole system. A plurality of unit small PLC can be arranged, the main PLC control cabinet is arranged in the auxiliary room control room, and each unit PLC controller is arranged at the outlet of the daily oil tank; all PLC controllers need to have independent CPUs and memories, and the PLC controllers can independently execute related programs or codes. The stored program can be automatically started to be executed after the power failure of each PLC is recovered; the internal operation data related to each unit PLC can be transmitted to the main or redundant main PLC through a bus form;

the main control sub-module further comprises a display unit 13 for displaying the system running state and corresponding parameters, and the display unit 13 is connected with the control sub-module. The main PLC, i.e. the main control unit 11, should be provided with an operation display screen, i.e. the display unit 13, for operation and maintenance personnel to operate and check the operation state of the system, and the operation display screen should be able to display the operation state and corresponding parameters of the whole oil supply control system. The display unit 13 may be provided with a spare connection line to connect with the redundant control unit 12.

The liquid level detection unit is connected with oil storage tank unit 2 and daily oil tank unit 3 respectively, and the liquid level detection submodule includes oil storage tank liquid level detection unit 5 and daily oil tank liquid level detection unit 6, and oil storage tank liquid level detection unit 5 is connected with oil storage tank unit 2, and daily oil tank liquid level detection unit 6 is connected with daily oil tank unit 3. Oil level control: when the oil is normally supplied, the oil supply pump is started to supply oil to the daily oil tank, when a certain daily oil tank reaches the highest liquid level, the electromagnetic valve on the oil supply branch pipe of the oil tank is automatically closed, and when the last oil tank received reaches the highest liquid level, the oil supply pump is automatically closed. When the oil is supplied and the liquid level of the working oil storage tank reaches the lowest liquid level, the oil supply pump of the reserve oil tank can be automatically started in sequence.

The oil storage tank liquid level detection unit 5 can be provided with two remote liquid level meters on the oil tank, and each liquid level meter is provided with two alarm liquid levels of high and low liquid levels; the daily oil tank liquid level detection unit 6 can be provided with four liquid levels of high, low and low in the daily oil tank. When the liquid level control of the daily oil tank fails or a fire alarm occurs, the fire control center signal turns off the oil supply pump, simultaneously turns on the electromagnetic valve of the oil discharge branch pipe of the daily oil tank and the emergency oil return pump, and the oil is discharged to the oil storage tank through the emergency oil return pump. Daily oil tank liquid level detection unit 6 is equipped with four and detects the gear, and four detection gears are respectively: an emergency oil return gear, a daily oil tank inlet valve closing gear, a daily oil tank inlet valve opening gear and a low oil quantity warning gear. Can set up different liquid level height as detecting the gear, for example set up urgent oil return gear and reach the nine tenth that the oil mass accounts for 90% oil tank volume that the daily oil tank height reaches for the liquid level, set up daily oil tank admission valve and close the eight ten tenth that the gear liquid level height is the daily oil tank height, set up daily oil tank admission valve and open the five tenth that the gear liquid level height is the daily oil tank height, set up the low oil mass and report an emergency and ask for help or increased vigilance the gear liquid level height and be two tenths of the daily oil tank height.

The control submodule is respectively connected with the oil storage tank unit 2, the daily oil tank unit 3 and the oil supply pipeline switching unit 4. The control submodule comprises an oil storage tank oil supply control unit 7, a pipeline switching control unit 8, a daily oil tank oil inlet control unit 9 and an oil return control unit 10, the oil storage tank oil supply control unit 7 is connected with the oil storage tank unit 2, the pipeline switching control unit 8 is connected with the oil supply pipeline switching unit 4, the daily oil tank oil inlet control unit 9 is connected with the daily oil tank unit 3, and the oil return control unit 10 is connected with the emergency oil return module 1. The control submodule comprises control valve switches arranged on an oil storage tank, a daily oil tank and an oil supply pipeline.

The system also comprises an emergency oil return module 1, wherein the emergency oil return module 1 is respectively connected with the oil storage tank unit 2 and the daily oil tank unit 3. The oil storage tanks of the oil storage tank units 2 of the daily oil tanks of the daily oil tank units 3 are connected through the emergency oil return module 1, namely 1 set of emergency oil return pumps can be arranged among the fuel oil, an oil valve and the oil return pumps in the emergency oil return module 1 can be linked with a fire-fighting system, and the fire-fighting system sends a dry node signal to an oil supply control system under emergency conditions such as fire and the like; when the oil supply control system receives a fire alarm signal between the daily oil tanks, an emergency oil return valve leading to an underground oil tank and a corresponding oil return pump can be opened remotely or manually to empty the fuel oil in the corresponding daily oil tank; when the oil supply control system detects a fire alarm signal in the generator room, the control system can remotely or manually close the emergency cut-off valve on the oil supply main pipe of the daily oil tank and stop the normal action of the oil supply pump.

A large-scale data center intelligent fuel control method utilizes the system and comprises the following steps:

s1: the liquid level condition of the daily oil tank is detected by a daily oil tank liquid level detection unit 6;

s2: when the liquid level of the daily oil tank is detected to reach an emergency oil return gear, oil is discharged for the daily oil tank through the oil return control unit 10 and is prompted;

s3: when the liquid level of the daily oil tank is detected to reach the closing gear of the oil inlet valve of the daily oil tank, the oil inlet valve of the daily oil tank is closed through the oil storage tank oil supply control unit 7, and the oil supply valve of the oil storage tank is closed through the daily oil tank oil inlet control unit 9;

s4: when the liquid level of the daily oil tank reaches the opening gear of the oil inlet valve of the daily oil tank, the oil inlet valve of the daily oil tank is opened through the oil inlet control unit 9 of the daily oil tank, and the oil supply valve of the oil storage tank is opened through the oil supply control unit 7 of the oil storage tank;

s5: when the liquid level of the daily oil tank reaches the low oil quantity warning gear, the daily oil tank is warned on site to prompt that the oil is short.

When normal, each underground oil tank is responsible for supplying oil to 8 daily oil tank boxes; when the oil storage tank liquid level detection unit 5 detects that any one of the underground oil tanks is lack of oil, the communicated pipelines can be switched to one oil tank by the oil supply pipeline switching unit 4 to be responsible for oil supply of all the daily oil tanks. When the liquid level detecting unit 5 of the oil storage tank detects that the liquid level reaches the low liquid level of the oil tank by the liquid level sensor of the 1 st underground oil tank, the oil supply pump corresponding to the oil tank is automatically closed, and the oil supply pump of the 2 nd oil tank is simultaneously opened, so that the oil supply is started from the 2 nd oil tank.

Furthermore, in the fuel supply module: the oil tank adopts a horizontal steel oil tank and is arranged in an underground oil tank room; the outdoor underground oil tank is provided with a drop-in type liquid level transmitter for oil level indication and high-low oil level alarm signal monitoring; a daily fuel tank of 1m3 is arranged between each daily fuel. The daily fuel tank is provided with a manhole cover plate, an oil inlet, an oil return port, an oil discharge port, an oil overflow port, a liquid level meter and the like. The on-site visual liquid level meter is a magnetic turning plate liquid level measuring device and is provided with a magnetostrictive liquid level meter, and the magnetostrictive liquid level meter is provided with corresponding scales to clearly mark the oil storage height and can provide a remote transmission 4-20mA signal indicating liquid level signal; an engine oil transfer pump of the diesel generating set transfers oil from a daily oil discharge tank to a generator oil injection system and returns the extra oil to a daily oil return tank; each daily fuel chamber can be provided with an oil return pump (explosion-proof type) which returns oil to the underground oil tank; each daily oil tank is provided with an emergency oil discharge manual and electric oil discharge valve, an electromagnetic valve on an oil inlet main pipe in an oil tank room is closed in emergency, the electric oil discharge valve and an oil return pump are opened, and fuel oil in the daily oil tank is discharged to an underground oil tank.

In the fuel control module: the oil supply control system is provided with a main PLC, a redundant PLC and a plurality of unit small PLCs, and the main PLC control cabinet is provided with a touch screen and can reflect relevant operation parameters of the oil supply system in real time; each underground oil tank system is provided with 2 oil supply pumps, a control cabinet of each oil supply pump is reserved with two start-stop points, and two faults, two states and two manual and automatic points are respectively provided for a main PLC and a redundant PLC; the underground oil tank and the daily oil tank are all provided with liquid level monitoring facilities, the underground oil tank and the liquid level sensors of each 1 daily oil tank have remote transmission and local display functions, detected signals of the liquid level sensors can be accessed into corresponding PLC, wherein each 1 group of daily oil tanks adopt one liquid level sensor and are accessed into corresponding unit PLC, and the underground oil tank needs to adopt redundant liquid level sensors and needs to be respectively accessed into the main PLC and the redundant PLC; the oil supply pump of the underground oil tank is interlocked with the oil supply electromagnetic valve of the daily oil tank, after the electromagnetic valves of 1 arbitrary group of daily oil tanks in the oil supply loop are opened and the valve states are confirmed, the unit PLC respectively sends an oil supply pump starting request to the main PLC and the redundant PLC, and at the moment, the main PLC (the main PLC is normally used and sends a command by the redundant PLC when the main PLC fails) starts the oil supply pump corresponding to the underground oil tank; when the electromagnetic valves of the corresponding group of the daily oil tanks are all closed, the corresponding oil supply pump should be immediately stopped. All the states of oil pumps, the liquid level of daily oil tanks, the liquid level of oil tanks, the states of control valves, all alarm signals and the like can be integrated into a dynamic ring monitoring server through primary or redundant PLC (programmable logic controllers), and each primary or redundant PLC controller is reserved with a communication protocol interface for dynamic ring system integration

The oil storage tank unit 2 of the fuel supply module of the present embodiment is provided with oil storage tanks which are mutually standby, the oil storage tanks share the task of supplying oil to the daily oil tank, when any oil storage tank is oil-free, the oil supply pipeline can be switched by the oil supply pipeline switching unit 4, so that another oil tank is responsible for supplying oil to all the daily oil tanks, the main control submodule sets the redundancy control unit 12 as the backup of the main control unit 11, when the main control unit 11 fails, the program and control are automatically switched to the redundancy control unit 12 to be executed, the oil level of the oil storage tank unit 2 and the oil level of the daily oil tank unit 3 are detected by the liquid level detection submodule, when the oil level reaches different detection standards, the oil supply valve of the oil storage tank unit 2 and the oil inlet valve of the daily oil tank unit 3 are controlled by the control submodule, meanwhile, an alarm device can be set, and workers can be reminded when necessary. And further, the purposes of strengthening the detection and protection of the oil supply system and reducing the fault rate of the oil supply system are achieved.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.