Fuel oil quick-closing control device and control method thereof

Abstract

The invention discloses a fuel oil quick-closing control device and a control method thereof, and relates to the technical field of ship equipment, the device comprises the following components: an air bottle, a safety valve, an electric connection type pressure gauge, a two-position three-way electromagnetic valve, an air filter, a stainless steel ball valve, a one-way valve, a pressure reducing valve, a pipe accessory, an inlet and outlet pairing joint and a control box, by adopting a mode of combining the two-position three-way electromagnetic valve and wireless communication remote control, the fuel oil quick-closing valve is quickly and accurately controlled under emergency conditions such as fire alarm, delay and errors of manual operation are greatly reduced, it is ensured that a fuel oil pipeline can be cut off in the first time, and the fuel oil quick-closing valve is ensured to be safe and reliable. In addition, the electric connection type pressure gauge, the safety valve and other components in the control box can monitor and adjust the system pressure in real time, and the safety and stability of the device are further enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of ship equipment, and in particular to a fuel oil quick shutoff control device and a control method thereof. Background Art

[0002] In the operation of the ship's power compartment, the fuel quick-closing valve plays a vital role. The effective control of the fuel quick-closing valve is the key link to ensure the safe and stable operation of the ship. The ship's power compartment is the core area of ​​the ship. The safety and reliability of its equipment are directly related to the overall performance of the ship and the life safety of the crew. Therefore, the control device of the fuel quick-closing valve not only needs to have a high degree of reliability and stability, but also needs to have the ability to respond quickly in an emergency.

[0003] At present, most fuel quick-closing valves on the market adopt pure manual control. This control method has obvious defects in emergency situations, such as fire. First, the timeliness and accuracy of manual operation are difficult to guarantee, which may lead to the failure to cut off the fuel in time, thus causing greater safety hazards. Secondly, pure manual control lacks real-time status feedback, which is not conducive to the management and operation of the ship's power compartment. Managers cannot understand the status of the fuel quick-closing valve in real time and it is difficult to make correct decisions in time. In addition, the existing fuel quick-closing control device also has deficiencies in integration, reliability and stability, and it is difficult to meet the shipbuilding industry's demand for continuously improving safety performance.

[0004] In view of the above problems, it is necessary to optimize the existing fuel quick-closing control method, and realize the automatic control of the fuel quick-closing valve by integrating components such as air bottles, safety valves, electric pressure gauges, two-position three-way solenoid valves, etc. Therefore, it is of great significance to develop a fuel quick-closing control device and its control method that can comprehensively realize the above characteristics. Summary of the invention

[0005] The purpose of the present invention is to make up for the shortcomings of the prior art and provide a fuel quick-closing control device and a control method thereof, which can realize remote control and real-time monitoring of the fuel quick-closing valve by integrating key components such as an air bottle, a safety valve, an electric pressure gauge, a two-position three-way solenoid valve, etc. By adopting Internet of Things technology, precision manufacturing technology and modern control technology, not only the degree of integration of the device is improved, but also its reliability and stability are significantly improved. In an emergency, the fuel supply can be quickly cut off through wireless communication remote control or manual operation to ensure the safety of the ship. At the same time, the real-time status feedback function also provides strong support for the management and operation of the ship's power compartment.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: on the one hand, a fuel quick-off control device, which includes the following components: an air bottle, a safety valve, an electrically connected pressure gauge, a two-position three-way solenoid valve, an air filter, a stainless steel ball valve, a one-way valve, a pressure reducing valve, pipe accessories, inlet and outlet matching joints and a control box.

[0007] Furthermore, the air bottle is a sealed pressure container, and the compressed air generated by the air compressor or the compressed air delivered by the air supply system enters the air bottle through the air inlet valve and is stored.

[0008] Furthermore, the safety valve includes a gas cylinder safety valve arranged on the air cylinder and a pipeline safety valve arranged on the pipeline. When the air compressor pressure controller fails or the compressed air pressure delivered by the system exceeds the set pressure of the gas cylinder safety valve, the gas cylinder safety valve opens to discharge gas. When the pressure reducing valve is set to too high and the pipeline air pressure exceeds the set pressure of the pipeline safety valve, the pipeline safety valve opens to discharge gas.

[0009] Furthermore, the electric pressure gauge monitors the pressure in the air bottle in real time. When the pressure in the air bottle reaches a set high pressure value, the electric pressure gauge sends a trigger signal to alarm or cut off the gas supply system. When the pressure in the air bottle drops to a set low pressure value, the electric pressure gauge sends a trigger signal and connects the gas supply system to replenish air.

[0010] Furthermore, the discharge valve and the two-position three-way solenoid valve are in a closed state under normal circumstances, and the other valve components are in a normally open state. In an emergency, the two-position three-way solenoid valve is opened by remote control through wireless communication or manually pressing a regional button for operating the quick-closing valve, and air is supplied to the corresponding quick-closing valve cylinder to close the quick-closing valve and cut off the oil supply pipeline. When the quick-closing valve needs to be reset, the two-position three-way solenoid valve is opened by remote control through wireless communication or manually pressing a button to cut off the air supply from the air bottle to the pipeline, causing the quick-closing valve cylinder to lose air, thereby resetting the system.

[0011] On the other hand, a fuel speed shut-off control method is provided, which is applicable to a fuel speed shut-off control device according to any one of claims 1 to 5, and is characterized in that the method comprises the following specific steps: Compressed air storage: compressed air is generated by starting the air compressor or delivered by the air supply system, so that it enters the sealed air bottle in the control box through the air inlet valve for storage; Pressure monitoring and regulation: Use an electric pressure gauge to monitor the pressure in the air cylinder in real time, and send a trigger signal to control the alarm and the on / off of the gas supply system according to the high or low pressure value set by the pressure. At the same time, the gas cylinder safety valve and pipeline safety valve are used to automatically exhaust and reduce the pressure when the system pressure exceeds the limit; Emergency cut-off operation: When an emergency occurs in the ship's power compartment, send a command remotely via wireless communication or manually press the button in the quick-closing valve area to control the two-position three-way solenoid valve to open, so that the air bottle supplies air to the quick-closing valve cylinder, close the quick-closing valve and cut off the oil supply pipeline; System reset: When the emergency situation is resolved and the quick-closing valve needs to be reset, the two-position three-way solenoid valve is opened through wireless communication remote control or manual button pressing, cutting off the air supply from the air bottle to the pipeline, causing the quick-closing valve cylinder to lose air and achieve system reset.

[0012] Furthermore, in the pressure monitoring and regulation step, a trigger signal is sent out according to the pressure reaching the set high or low pressure value to control the alarm and the on and off of the gas supply system. Specifically, a pressure hysteresis coefficient is introduced. and the pressure change rate coefficient ,in Prevent the control signal from being triggered frequently when the pressure fluctuates near the critical value. Considering the impact of pressure changes on system control under different conditions, when the real-time pressure in the air bottle Rise and reach the preset high pressure value When and When the electric pressure gauge generates a trigger signal , trigger the alarm device to sound an alarm or control the disconnection of the air supply system, stop inputting compressed air into the air bottle, when the compressed air in the air bottle is used or there is a leak, resulting in the real-time pressure in the air bottle Reduce to the preset low pressure value When and When the electric pressure gauge sends a trigger signal , give a low pressure alarm to the air bottle, or control the air supply system to start the air compressor or continue the air supply system to replenish compressed air into the air bottle.

[0013] Furthermore, in the pressure monitoring and regulation step, the cylinder safety valve and pipeline safety valve are used to automatically exhaust and reduce the pressure when the system pressure exceeds the limit. If the pressure controller of the air compressor fails, or the compressed air pressure delivered by the system Exceeding the set pressure value of the cylinder safety valve installed on the air cylinder , that is, satisfy When, among them, is the pressure rise rate, The dynamic coefficient of the safety valve opening is determined by conducting actual tests and simulation experiments on the safety valve, combined with the structure and working principle of the safety valve. It is the pressure rise rate coefficient, which reflects the influence of the pressure rise rate on the opening of the safety valve. The value of this coefficient is determined by experimental research and data analysis on the opening of the safety valve under different pressure rise rates, combined with the performance characteristics of the safety valve. The gas cylinder safety valve automatically opens to discharge the gas in the air cylinder to reduce the pressure in the air cylinder. When the pressure set by the pressure reducing valve is too high, the gas pressure in the pipeline exceeds the set pressure value of the pipeline safety valve installed on the pipeline. , introduce the pipeline characteristic coefficient and flow influence coefficient ,in Taking into account the influence of factors such as pipeline material, diameter, and roughness on gas flow and pressure distribution, the value of this coefficient is determined through fluid mechanics experiments and analysis of different types of pipelines combined with actual operating experience. It reflects the influence of gas flow in pipeline on the opening of pipeline safety valve. Through experimental research and data analysis on the opening of pipeline safety valve under different flow conditions, combined with the characteristics of pipeline system, the value of this coefficient is determined. satisfy When the pipeline safety valve opens, the gas is discharged, among which, is the gas flow rate in the pipeline, is the cross-sectional area of ​​the pipe.

[0014] Furthermore, in the emergency shutoff operation step, a command is sent remotely via wireless communication or a button in the quick-closing valve area is manually pressed to control the opening of the two-position three-way solenoid valve. Specifically, the control signal of the two-position three-way solenoid valve is , Indicates opening, Indicates closed, wireless communication control command signal is , the area button control signal is , introduce dynamic adjustment coefficient of operation priority , dynamically adjusted according to the urgency of the operation, system status and other factors, and the control unit calculates and sets according to preset rules. When the system detects an emergency signal When ,but ,like ,but ,when When, regardless of or Why is it worth it? ,when and hour, ,when When the two-position three-way solenoid valve is opened, the air bottle supplies air to the quick-closing valve cylinder, and the quick-closing valve is closed.

[0015] Compared with the prior art, the fuel quick shut-off control device and control method thereof have the following beneficial effects: 1. The present invention combines a two-position three-way solenoid valve with wireless communication remote control to achieve rapid and accurate control of the fuel quick-closing valve in emergency situations such as fire alarms, greatly reducing delays and errors in manual operations, ensuring that the fuel pipeline can be cut off in the first place, thereby effectively preventing the spread of safety accidents such as fires. In addition, components such as the electric pressure gauge and safety valve in the control box can monitor and adjust the system pressure in real time, further enhancing the safety and stability of the device.

[0016] 2. The present invention realizes a high degree of integration of the fuel oil quick-close control device by adopting Internet of Things technology, precision manufacturing technology and modern control technology. The control box not only supports local manual control, but also supports remote control in the control room, and can display the operating status of the device in real time, providing a comprehensive monitoring method for management personnel. At the same time, the electrically connected pressure gauge, safety valve and other components in the device can monitor and adjust the system pressure in real time to ensure that the system operates stably within a safe range, so that the fuel oil quick-close control device of the present invention can better meet the shipbuilding industry's demand for continuously improving safety performance.

[0017] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 is a schematic diagram of a fuel quick shut-off control device; Figure 2 The figure is a flow chart of a fuel quick shut-off control method. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] Embodiment 1 The fuel quick shut-off control device in this embodiment is applied to the power compartment of a certain type of ship. The air bottle of the device is a high-strength sealed pressure vessel, which is arranged inside the control box. The air bottle is connected to the air compressor or the air supply system through an air intake pipe. An air intake valve is installed on the air intake pipe. The air intake valve is used to control the on and off of compressed air entering the air bottle. The air filter is installed on the side of the air intake pipe close to the air bottle. Its function is to filter impurities and pollutants in the compressed air, ensure the cleanliness of the compressed air entering the air bottle, and prevent impurities from damaging the valves and pipelines inside the device.

[0022] Stainless steel ball valves are distributed on different pipelines of the device. They are mainly used to manually cut off or connect the gas flow in the pipeline when needed, which is convenient for the maintenance and inspection of the device. For example, when performing partial maintenance on the device, the corresponding stainless steel ball valve can be closed to isolate the part that needs maintenance without affecting the normal operation of other parts.

[0023] The one-way valve is installed on the air supply pipeline between the air bottle and the quick-closing valve cylinder. Its function is to ensure that the gas can only flow from the air bottle to the quick-closing valve cylinder, prevent the gas in the quick-closing valve cylinder from flowing back into the air bottle, and ensure the reliability of the quick-closing valve closing action.

[0024] The pressure reducing valve is arranged on the air supply pipeline between the air bottle and the quick closing valve cylinder. It is used to reduce the high-pressure gas in the air bottle to a pressure value suitable for the working of the quick closing valve cylinder. The set pressure of the pressure reducing valve can be adjusted according to actual needs to meet the working requirements of different types of quick closing valves.

[0025] The electric pressure gauge is connected to the inside of the air cylinder through a pressure sensor to monitor the pressure in the air cylinder in real time. When the pressure in the air cylinder reaches the set high pressure value (such as 3.0MPa), the contacts of the electric pressure gauge will operate and send out a trigger signal. On the one hand, this signal can be transmitted to the alarm device in the control box to trigger an alarm and alert the staff. On the other hand, it can also be transmitted to the control unit of the gas supply system to cut off the gas supply system and stop inputting compressed air into the air cylinder. When the pressure in the air cylinder drops to the set low pressure value, the electric pressure gauge will also send out a trigger signal to realize the low pressure alarm of the air cylinder or connect the gas supply system to replenish air.

[0026] Safety valves include gas cylinder safety valves and pipeline safety valves. The gas cylinder safety valve is directly installed on the air cylinder. When the air compressor pressure controller fails or the compressed air pressure delivered by the system exceeds the set pressure of the gas cylinder safety valve (such as 3.0MPa), the gas cylinder safety valve automatically opens to discharge the gas in the air cylinder to prevent the air cylinder from exploding due to excessive pressure. The pipeline safety valve is installed on the pipeline connecting the pressure reducing valve and the quick-closing valve cylinder. When the pressure of the pressure reducing valve is set too high, causing the pipeline air pressure to exceed the set pressure of the pipeline safety valve (such as 0.77MPa), the pipeline safety valve opens to discharge gas to protect the safety of the pipeline system.

[0027] The two-position three-way solenoid valve is a key component for realizing the control of the quick-closing valve. It is in a closed state under normal circumstances. The two-position three-way solenoid valve is connected to the control unit in the control box through a control line, and is also connected to the air supply pipe of the quick-closing valve cylinder. In an emergency, the remote control command can be received through the wireless communication module in the control box, or the button set in the operation area of ​​the quick-closing valve can be manually pressed to control the two-position three-way solenoid valve to open, so that the compressed air in the air bottle is supplied to the corresponding quick-closing valve cylinder through the air supply pipe, so that the quick-closing valve is quickly closed and the oil supply pipeline is cut off.

[0028] The control box adopts Internet of Things technology, precision manufacturing technology and modern control technology to achieve high integration. The control box integrates components such as control unit, wireless communication module, alarm device, etc. The control unit is responsible for receiving and processing signals from various sensors, and controlling the action of each valve according to preset programs and logic. The wireless communication module supports remote communication with the control room. The staff can operate and monitor the device through remote control equipment in the control room. The alarm device can send out sound and light alarm signals when abnormal conditions occur in the device, such as too high or too low pressure. At the same time, the display screen of the control box can display the operating status of the device in real time, including the pressure in the air bottle, the switch status of each valve, and other information, to provide quantitative operating status for subsequent processing modules, so that the system can be adjusted in a targeted manner.

[0029] Embodiment 2 During the preparation stage before the ship sets sail, the operator shall, in accordance with the operating procedures, first check whether the connections of the components of the fuel quick-close control device are firm and whether there is any damage on the appearance, and confirm the initial status of all valves. The drain valve and the two-position three-way solenoid valve shall be in the closed state, and the other valves (such as stainless steel ball valves, etc.) shall be in the normally open state.

[0030] After confirmation, the operator starts the air compressor, and the air compressor starts working. The compressed air generated is finely filtered by the air filter to remove dust, particles and other impurities, ensuring that the compressed air entering the system is clean and pure. The filtered compressed air enters the air bottle through the intake valve for storage. When the intake valve is open, compressed air continues to flow into the air bottle. As the air in the air bottle continues to increase, the pressure gradually rises. The electric pressure gauge monitors the pressure changes in the air bottle in real time and transmits the pressure signal to the control unit in the control box in the form of an electrical signal. The control unit processes and analyzes the pressure signal so that it can make corresponding control decisions based on the pressure conditions later.

[0031] When the pressure in the air bottle reaches the set high pressure value (such as 3.0MPa), the contacts inside the electric pressure gauge will operate and send out a trigger signal. Specifically, the pressure hysteresis coefficient is introduced. and the pressure change rate coefficient , when the real-time pressure in the air bottle Rise and reach the preset high pressure value When and When the electric pressure gauge generates a trigger signal The trigger signal is transmitted to the control unit in the control box through the line. After receiving the trigger signal, the control unit immediately performs two operations: on the one hand, the control alarm device emits a clear and loud alarm sound, and at the same time controls the corresponding indicator light on the display screen to light up, reminding the operator in a striking way that the pressure in the air cylinder has reached the high pressure value; on the other hand, the control unit of the air supply system cuts off the power supply of the air compressor, stops the air compressor from working, and stops inputting compressed air into the air cylinder.

[0032] During the voyage of the ship, due to occasional use of the quick-closing valve (such as testing operations, etc.) or slight leakage, the pressure in the air bottle will gradually decrease. When the pressure drops to the set low pressure value, that is, when and When the electric pressure gauge sends a trigger signal After receiving the low-pressure trigger signal, the control unit also performs two operations: it controls the alarm device to emit a low-pressure alarm sound different from the high-pressure alarm, and at the same time controls the corresponding low-pressure indicator light on the display screen to light up, prompting the operator that the pressure in the air bottle is too low, and at the same time connects the air supply system to restart the air compressor and replenish compressed air into the air bottle.

[0033] In addition, during the entire operation process, if the air compressor pressure controller fails, causing the compressed air pressure delivered by the system to exceed the set pressure of the cylinder safety valve (such as 3.0MPa), it will meet the When the pressure drops to a safe range, the spring and other structures inside the gas cylinder safety valve return to their original state and the valve closes automatically. When the pressure of the pressure reducing valve is set too high, causing the pipeline air pressure to exceed the set pressure of the pipeline safety valve (such as 0.77MPa), the working principle of the pipeline safety valve is similar. The valve opens to discharge gas to protect the safety of the pipeline system. When the pipeline pressure returns to normal, the pipeline safety valve closes automatically.

[0034] During the voyage of the ship, a fire broke out in the power compartment. Multiple fire detectors installed at different locations in the power compartment detected fire signals (such as a sharp rise in temperature, excessive smoke concentration, etc.) at the same time. These fire detectors transmitted the fire signals to the control unit in the control box in the form of electrical signals. After receiving the fire signals, the control unit immediately issued an emergency cut-off command. At this time, the operator can choose two ways to control the two-position three-way solenoid valve: The operator uses a special remote control device in the control room to establish a connection with the wireless communication module in the control box, and uses the wireless communication module to send a control command to the two-position three-way solenoid valve. After receiving the command, the wireless communication module converts it into an electrical signal and transmits it to the two-position three-way solenoid valve to open the two-position three-way solenoid valve. If the remote control device fails or cannot be used due to other reasons such as signal interference, the operator can quickly rush to the power compartment and find the emergency button set in the area where the quick-closing valve is to be operated. The button is connected to the control circuit of the two-position three-way solenoid valve through a line. The operator presses the button to directly open the two-position three-way solenoid valve.

[0035] After the two-position three-way solenoid valve is opened, the compressed air in the air bottle, under the action of the pressure difference, quickly supplies air to the corresponding quick-closing valve cylinder through the air supply pipe. The piston in the quick-closing valve cylinder is pushed by the compressed air, driving the valve disc to move rapidly, closing the quick-closing valve and cutting off the oil supply pipeline controlled by the quick-closing valve, preventing the continued supply of fuel and avoiding further expansion of the fire.

[0036] When the fire is extinguished and the professional personnel have conducted a comprehensive inspection of the power compartment and confirmed that the safety hazard has been completely eliminated, the quick-closing valve needs to be reset. The operator can also choose one of the following two methods to control the two-position three-way solenoid valve: In the control room, through the remote control device, the device establishes a connection with the wireless communication module in the control box again, and uses the wireless communication module to send a reset control instruction to the two-position three-way solenoid valve. After receiving the instruction, the wireless communication module converts it into an electrical signal and transmits it to the two-position three-way solenoid valve to open the two-position three-way solenoid valve. If the remote control method cannot be used, the operator can go to the power compartment and find the manual reset button near the quick-closing valve. The button is also connected to the control circuit of the two-position three-way solenoid valve through the line. The operator manually presses the reset button to open the two-position three-way solenoid valve.

[0037] After the two-position three-way solenoid valve is opened, the air supply to the pipeline is cut off from the air bottle, and the gas in the quick-closing valve cylinder is discharged under the action of the external atmospheric pressure and the internal structure of the cylinder. The quick-closing valve cylinder loses air, and the valve disc of the quick-closing valve returns to its initial state under the action of the reset spring and other structures. The entire system is reset to prepare for the next possible emergency. At the same time, the operator also needs to check and confirm the relevant parameters in the control box to ensure that the device is in normal working condition.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fuel quick shut-off control device, characterized in that: The device includes the following components: an air bottle, a safety valve, an electric pressure gauge, a two-position three-way solenoid valve, an air filter, a stainless steel ball valve, a one-way valve, a pressure reducing valve, pipe accessories, inlet and outlet matching joints and a control box.

2. A fuel quick shut-off control device according to claim 1, characterized in that: The air bottle is a sealed pressure container, and the compressed air generated by the air compressor or the compressed air delivered by the air supply system enters the air bottle through the air inlet valve and is stored.

3. A fuel quick shut-off control device according to claim 1, characterized in that: The safety valve includes a gas cylinder safety valve arranged on the air cylinder and a pipeline safety valve arranged on the pipeline. When the air compressor pressure controller fails or the compressed air pressure delivered by the system exceeds the set pressure of the gas cylinder safety valve, the gas cylinder safety valve opens to discharge gas. When the pressure of the pressure reducing valve is set too high and the pipeline air pressure exceeds the set pressure of the pipeline safety valve, the pipeline safety valve opens to discharge gas.

4. A fuel quick shut-off control device according to claim 1, characterized in that: The electric pressure gauge monitors the pressure in the air bottle in real time. When the pressure in the air bottle reaches a set high pressure value, the electric pressure gauge sends a trigger signal to alarm or cut off the gas supply system. When the pressure in the air bottle drops to a set low pressure value, the electric pressure gauge sends a trigger signal and connects the gas supply system to replenish air.

5. A fuel quick shut-off control device according to claim 1, characterized in that: The discharge valve and the two-position three-way solenoid valve are in a closed state under normal circumstances, and the other valve components are in a normally open state. In an emergency, the two-position three-way solenoid valve is opened by remote control through wireless communication or manually pressing a regional button for operating the quick-closing valve, and air is supplied to the corresponding quick-closing valve cylinder to close the quick-closing valve and cut off the oil supply pipeline. When the quick-closing valve needs to be reset, the two-position three-way solenoid valve is opened by remote control through wireless communication or manually pressing a button to cut off the air supply from the air bottle to the pipeline, causing the quick-closing valve cylinder to lose air, thereby resetting the system.

6. A fuel quick shut-off control method, which is applicable to a fuel quick shut-off control device according to any one of claims 1 to 5, characterized in that: The method comprises the following specific steps: Compressed air storage: compressed air is generated by starting the air compressor or delivered by the air supply system, so that it enters the sealed air bottle in the control box through the air inlet valve for storage; Pressure monitoring and regulation: Use an electric pressure gauge to monitor the pressure in the air cylinder in real time, and send a trigger signal to control the alarm and the on / off of the gas supply system according to the high or low pressure value set by the pressure. At the same time, the gas cylinder safety valve and pipeline safety valve are used to automatically exhaust and reduce the pressure when the system pressure exceeds the limit; Emergency cut-off operation: When an emergency occurs in the ship's power compartment, send a command remotely via wireless communication or manually press the button in the quick-closing valve area to control the two-position three-way solenoid valve to open, so that the air bottle supplies air to the quick-closing valve cylinder, close the quick-closing valve and cut off the oil supply pipeline; System reset: When the emergency situation is resolved and the quick-closing valve needs to be reset, the two-position three-way solenoid valve is opened through wireless communication remote control or manual button pressing, cutting off the air supply from the air bottle to the pipeline, causing the quick-closing valve cylinder to lose air and achieve system reset.

7. A fuel quick shut-off control method according to claim 6, characterized in that: In the pressure monitoring and regulation step, a trigger signal is sent out according to the pressure reaching the set high or low pressure value to control the alarm and the on and off of the gas supply system. Specifically, the pressure hysteresis coefficient is introduced. and the pressure change rate coefficient , when the real-time pressure in the air bottle Rise and reach the preset high pressure value When and When the electric pressure gauge generates a trigger signal , trigger the alarm device to sound an alarm or control the disconnection of the air supply system, stop inputting compressed air into the air bottle, when the compressed air in the air bottle is used or there is a leak, resulting in the real-time pressure in the air bottle Reduce to the preset low pressure value When and When the electric pressure gauge sends a trigger signal , give a low pressure alarm to the air bottle, or control the air supply system to start the air compressor or continue the air supply system to replenish compressed air into the air bottle.

8. A fuel quick shut-off control method according to claim 6, characterized in that: In the pressure monitoring and regulation step, the cylinder safety valve and pipeline safety valve are used to automatically exhaust and reduce the pressure when the system pressure exceeds the limit. If the pressure controller of the air compressor fails, or the compressed air pressure delivered by the system Exceeding the set pressure value of the cylinder safety valve installed on the air cylinder , that is, satisfy When, among them, is the pressure rise rate, is the safety valve opening dynamic coefficient, It is the pressure rise rate coefficient. The gas cylinder safety valve automatically opens to discharge the gas in the air cylinder to reduce the pressure in the air cylinder. When the pressure set by the pressure reducing valve is too high, the gas pressure in the pipeline exceeds the set pressure value of the pipeline safety valve installed on the pipeline. , introduce the pipeline characteristic coefficient and flow influence coefficient When the pressure reducing valve is set too high, the pipeline pressure satisfy When the pipeline safety valve opens, the gas is discharged, among which, is the gas flow rate in the pipeline, is the cross-sectional area of ​​the pipe.

9. A fuel quick shut-off control method according to claim 6, characterized in that: In the emergency shut-off operation step, a command is sent remotely via wireless communication or a button in the quick-closing valve area is manually pressed to control the opening of the two-position three-way solenoid valve. Specifically, the control signal of the two-position three-way solenoid valve is , Indicates opening, Indicates closed, the wireless communication control command signal is , the area button control signal is , introduce dynamic adjustment coefficient of operation priority , when the system detects an emergency signal When ,but ,like ,but ,when When, regardless of or Why is it worth it? ,when and hour, ,when When the two-position three-way solenoid valve is opened, the air bottle supplies air to the quick-closing valve cylinder, and the quick-closing valve is closed.

Images