An explosion-proof depressurization system for ship compartments and its control method

Abstract

This invention relates to the field of marine engineering technology and discloses an explosion-proof pressure relief system and its control method for ship cabins. The cabin includes a wall panel with a vent. The system includes: a sealing gasket surrounding the vent on the wall panel; a sealing plate abutting the outer end of the sealing gasket; a clamping assembly including a gas cylinder, a cylinder, a pressure relief valve, a first solenoid valve, and a second solenoid valve. The piston rod end of the cylinder abuts against the outer end of the sealing plate. The pressure relief valve is located in the rodless chamber of the cylinder. A first pipeline connects the gas cylinder to the rodless chamber of the cylinder, and a second pipeline connects the gas cylinder to the cabin. The first solenoid valve is located in the first pipeline, and the second solenoid valve is located in the second pipeline. The gas cylinder contains inert gas. A control assembly is electrically connected to the pressure relief valve, the first solenoid valve, and the second solenoid valve. The explosion-proof pressure relief system and its control method for ship cabins provided by this invention can maintain stable pressure within the cabin and also address fire hazards.

Description

Technical Field

[0001] This invention relates to the field of marine engineering technology, and in particular to an explosion-proof depressurization system for ship cabins and its control method. Background Technology

[0002] Explosion-proof pressure relief systems for ship compartments are one of the key technologies for ensuring the safe and reliable operation of ships. Under certain circumstances, excessive pressure may occur inside compartments due to factors such as fire, equipment failure, gas leaks, or pressure differences between the inside and outside of the compartment. To prevent compartment rupture or other safety accidents caused by excessive pressure, an effective pressure relief system is needed to release excessive pressure in a timely manner, ensuring the structural safety of the compartment and the safety of the crew.

[0003] Existing explosion-proof pressure relief systems typically employ traditional mechanical structures or pressure relief valves to release pressure within the compartment. For example, common technologies include controlling the opening and closing of the pressure relief valve via spring action or a pneumatic system, automatically releasing gas when the pressure inside the compartment reaches a set value. In the event of a fire inside the compartment, these traditional systems cannot handle the fire promptly, making the equipment inside the compartment highly susceptible to destruction, resulting in lengthy and costly subsequent ship restoration projects. Summary of the Invention

[0004] The purpose of this invention is to provide an explosion-proof pressure relief system and its control method for ship cabins that can maintain stable pressure inside the cabins, respond promptly to fire problems, and reduce damage to equipment inside the cabins.

[0005] To achieve the above objectives, the present invention provides an explosion-proof depressurization system and its control method for ship cabins, wherein the cabin includes a wall panel and a vent is provided on the wall panel;

[0006] In a first aspect of the invention, the explosion-proof depressurization system for ship compartments includes:

[0007] A sealing gasket is disposed on the outside of the vent and is circumferentially disposed on the wall panel surrounding the vent.

[0008] A sealing plate, which abuts against the outer end of the sealing gasket;

[0009] A clamping assembly includes a gas cylinder, a cylinder, a pressure relief valve, a first solenoid valve, and a second solenoid valve. The cylinder is located outside the vent port, and the piston rod end of the cylinder abuts against the outer end of the sealing plate. The pressure relief valve is located in the rodless chamber of the cylinder. A first pipeline connects the gas cylinder to the rodless chamber of the cylinder, and a second pipeline connects the gas cylinder to the compartment. The first solenoid valve is located on the first pipeline, and the second solenoid valve is located on the second pipeline. The gas cylinder contains an inert gas.

[0010] A control component is electrically connected to the pressure relief valve, the first solenoid valve, and the second solenoid valve.

[0011] Furthermore, a groove is provided on the inner end of the sealing plate, and the outer end of the sealing gasket is shaped to fit into the groove.

[0012] Furthermore, the explosion-proof depressurization system for ship cabins also includes a limiting spring, with both ends of the limiting spring respectively located on the outer end of the sealing plate and on the cylinder, and the limiting spring being kept in a stretched state.

[0013] Furthermore, the sealing plate is provided with a first safety valve, and the rodless chamber of the cylinder is provided with a second safety valve. The control component is electrically connected to the first safety valve and the second safety valve.

[0014] Furthermore, the explosion-proof pressure relief system for ship cabins also includes a first pressure sensor, a second pressure sensor, a third pressure sensor, a displacement sensor, and an alarm module. The first pressure sensor is located at the gas output end of the gas cylinder, the second pressure sensor is located in the rodless chamber of the cylinder, the third pressure sensor is located inside the cabin, and the displacement sensor is located on the sealing plate. The first pressure sensor, the second pressure sensor, the third pressure sensor, and the displacement sensor are all electrically connected to the control component, and the alarm module is electrically connected to the control component.

[0015] In a second aspect of the invention, the control method, controlling the explosion-proof depressurization system for the ship's compartments, includes:

[0016] In the compressed state, when the explosion-proof pressure relief system for the ship's compartment is in the compressed state, the piston rod of the cylinder pushes the sealing plate against the sealing gasket and maintains pressure on the cylinder;

[0017] In standby mode, when the explosion-proof pressure relief system for the ship's cabin is in standby mode, the control component monitors the values ​​of the first pressure sensor, the second pressure sensor, the third pressure sensor, and the displacement sensor in real time. If the values ​​are different from the preset values, an alarm is triggered.

[0018] In the depressurization state, when the explosion-proof depressurization system for the ship's compartment is in the depressurization state, the piston rod of the cylinder disengages from the sealing plate, and the pressure inside the compartment is released from between the vent and the sealing plate;

[0019] In fire-fighting mode, when the explosion-proof pressure relief system for the ship's cabin is in fire-fighting mode, the piston rod of the cylinder disengages from the sealing plate, the pressure inside the cabin is released from between the vent and the sealing plate, and inert gas is introduced into the cabin through the gas cylinder.

[0020] Furthermore, when the explosion-proof pressure relief system for the ship's cabin is in the compressed state, if the value detected by the second pressure sensor is less than a preset value, the first solenoid valve opens, the second solenoid valve closes, the pressure relief valve closes, and the gas in the gas cylinder is introduced into the rodless chamber of the cylinder. The piston rod of the cylinder presses the sealing plate onto the sealing gasket. When the displacement sensor detects the displacement signal of the sealing plate, and the second sensor detects that its value is equal to the preset value, the control component determines that the sealing plate has been compressed and closes the first solenoid valve. When the value detected by the second pressure sensor is greater than the preset value, the second safety valve opens until the value detected by the second pressure sensor returns to the preset value, at which point the second safety valve closes, and the explosion-proof pressure relief system for the ship's cabin switches from the compressed state to the standby state.

[0021] Furthermore, when the explosion-proof pressure relief system for the ship's cabin is in the standby state, the first solenoid valve, the second solenoid valve, and the pressure relief valve are all closed. When the value of the first sensor is lower than a preset value, the alarm module determines that the gas cylinder pressure is insufficient and sounds an alarm. When the value of the second sensor is lower than a preset value, the alarm module determines that the sealing pressure of the sealing plate is insufficient and sounds an alarm. When the value of the third sensor is greater than a preset value, and the displacement sensor simultaneously shows a displacement signal, the alarm module determines that the sealing plate is loose and sounds an alarm. At this time, the first safety valve opens to relieve pressure. If the value of the third sensor does not recover to the preset value within a preset time, the explosion-proof pressure relief system for the ship's cabin switches from the standby state to the pressure relief state.

[0022] Furthermore, when the explosion-proof pressure relief system for the ship's cabin is in the pressure relief state, the first solenoid valve is closed, the second solenoid valve is closed, the pressure relief valve is open, and the gas in the rodless chamber of the cylinder is released into the atmosphere through the pressure relief valve.

[0023] Furthermore, when the control component receives a fire signal, and the explosion-proof pressure relief system for the ship's compartment switches to the fire-fighting state, the first solenoid valve closes, the second solenoid valve opens, the pressure relief valve opens, and the gas in the gas cylinder is introduced into the compartment through the second pipeline.

[0024] Compared with the prior art, the explosion-proof pressure relief system and control method for ship cabins disclosed in this invention have the following advantages: a second pipeline connects the gas cylinder to the cabin, a second solenoid valve is installed on the second pipeline, and the gas cylinder contains inert gas. When a fire occurs inside the cabin, the inert gas in the gas cylinder can be introduced into the cabin through the second pipeline by opening the second solenoid valve. The inert gas can reduce the oxygen content in the cabin, thereby extinguishing the fire and protecting the equipment inside the cabin in a timely manner, reducing the damage to the equipment inside the cabin. Attached Figure Description

[0025] Figure 1 This is a circuit diagram of a ship cabin explosion-proof depressurization system according to an embodiment of the present invention;

[0026] Figure 2 This is a flowchart of a control method for a ship cabin explosion-proof depressurization system according to an embodiment of the present invention;

[0027] In the diagram, 1 is the compartment; 101 is the bulkhead; and 1011 is the vent.

[0028] 2. Sealing gaskets;

[0029] 3. Sealing plate; 301, card slot;

[0030] 4. Clamping assembly; 401. Gas cylinder; 402. Cylinder; 403. Pressure relief valve; 404. First solenoid valve; 405. Second solenoid valve; 406. First pipeline; 407. Second pipeline;

[0031] 5. Control components;

[0032] 6. Limiting spring;

[0033] 7. First safety valve;

[0034] 8. Second safety valve;

[0035] 9. First pressure sensor;

[0036] 10. Second pressure sensor;

[0037] 11. Third pressure sensor;

[0038] 12. Displacement sensor. Detailed Implementation

[0039] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0040] In the description of this invention, the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "lateral," and "longitudinal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0041] In the description of this invention, the terms "provided with," "set up," "connected," and "placed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0043] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0044] like Figure 1 As shown, an explosion-proof depressurization system and its control method for a ship cabin according to an embodiment of the present invention are disclosed. The cabin 1 includes a wall panel 101, and a vent 1011 is provided on the wall panel 101.

[0045] In a first aspect of the present invention, a ship compartment explosion-proof depressurization system includes:

[0046] Sealing gasket 2 is disposed on the outside of the vent 1011 and is arranged around the wall plate 101 on the outer periphery of the vent 1011.

[0047] Sealing plate 3 abuts against the outer end of sealing gasket 2;

[0048] The clamping assembly 4 includes a gas cylinder 401, a cylinder 402, a pressure relief valve 403, a first solenoid valve 404, and a second solenoid valve 405. The cylinder 402 is located outside the vent 1011, and the piston rod end of the cylinder 402 abuts against the outer end of the sealing plate 3. The pressure relief valve 403 is located in the rodless chamber of the cylinder 402. The gas cylinder 401 is connected to the rodless chamber of the cylinder 402 by a first pipeline 406, and the gas cylinder 401 is connected to the chamber 1 by a second pipeline 407. The first solenoid valve 404 is located on the first pipeline 406, and the second solenoid valve 405 is located on the second pipeline 407. The gas cylinder 401 contains an inert gas.

[0049] Control component 5 is electrically connected to pressure relief valve 403, first solenoid valve 404, second solenoid valve 405, and pressure relief valve 403.

[0050] Based on the above technical solution, the gas cylinder 401 is connected to the compartment 1 by a second pipeline 407, and a second solenoid valve 405 is installed on the second pipeline 407. The gas cylinder 401 contains inert gas. When a fire occurs inside the compartment 1, the inert gas in the gas cylinder 401 can be introduced into the compartment 1 through the second pipeline 407 by opening the second solenoid valve 405. The inert gas can reduce the oxygen content in the compartment 1, thereby extinguishing the fire and protecting the equipment inside the compartment 1 in a timely manner, reducing the damage to the equipment inside the compartment 1.

[0051] Preferably, the inner end of the sealing plate 3 has a groove 301, and the outer end of the sealing gasket 2 is shaped to fit into the groove 301. The sealing gasket 2 and the sealing plate 3 are fixed by the engagement of the groove 301, ensuring that the sealing gasket 2 will not shift or loosen during the sealing process, effectively improving the sealing performance and preventing gas leakage.

[0052] Preferably, the explosion-proof pressure relief system for ship compartments also includes a limiting spring 6, with its two ends respectively disposed on the outer end of the sealing plate 3 and on the cylinder 402. The limiting spring 6 is kept in a stretched state. The limiting spring 6 can effectively control the movement position of the sealing plate 3, preventing the sealing plate 3 and the sealing gasket 2 from shifting positions during the sealing and pressing process. When the pressure inside the compartment 1 is too high, the piston rod of the cylinder 402 will push the sealing plate 3 to open, releasing gas and reducing the pressure. Because the limiting spring 6 is kept in a stretched state, it provides a predetermined elastic force, controlling the opening position and force of the sealing plate 3, thereby effectively controlling the pressure relief process and preventing the sealing plate 3 from being damaged or unstable due to excessively fast or forceful movement during pressure relief.

[0053] Preferably, the sealing plate 3 is provided with a first safety valve 7, and the rodless chamber of the cylinder 402 is provided with a second safety valve 8. The control component 5 is electrically connected to the first safety valve 7 and the second safety valve 8.

[0054] Specifically, the first safety valve 7 and the second safety valve 8 are mechanical structures. When the air pressure is greater than the preset value, the first safety valve 7 and the second safety valve 8 can open to release pressure. When the air pressure is less than or equal to the preset value, the first safety valve 7 and the second safety valve 8 automatically close.

[0055] The mechanical structure of the first safety valve 7 and the second safety valve 8 ensures the automation and reliability of the pressure relief process. When the air pressure in the chamber 1 or the cylinder 402 exceeds the set value, the first safety valve 7 or the second safety valve 8 will automatically open to release the excess air pressure in time. When the air pressure returns to the safe range, the first safety valve 7 or the second safety valve 8 will automatically close, avoiding excessive pressure relief. This design enables precise air pressure control, reduces resource waste or gas leakage caused by excessive pressure relief, maintains stable air pressure in the chamber 1 or the cylinder 402, and effectively prevents excessive air pressure from damaging the internal equipment of the chamber 1 or the sealing plate 3. This design does not rely on electrical or other complex electronic control systems and can automatically perform pressure holding operations.

[0056] Preferably, the explosion-proof pressure relief system for ship cabins further includes a first pressure sensor 9, a second pressure sensor 10, a third pressure sensor 11, a displacement sensor 12, and an alarm module. The first pressure sensor 9 is located at the gas output end of the gas cylinder 401, the second pressure sensor 10 is located in the rodless chamber of the cylinder 402, the third pressure sensor 11 is located in the cabin 1, and the displacement sensor 12 is located on the sealing plate 3. The first pressure sensor 9, the second pressure sensor 10, the third pressure sensor 11, and the displacement sensor 12 are all electrically connected to the control component 5, and the alarm module is electrically connected to the control component 5 (the alarm module is not shown in the accompanying drawings).

[0057] The first pressure sensor 9 monitors the gas pressure in cylinder 401 in real time, the second pressure sensor 10 monitors the pressure inside cylinder 402, and the third pressure sensor 11 monitors the pressure inside compartment 1. Through the combination of these three sensors, the system can accurately grasp various pressure data throughout the entire explosion-proof depressurization process, ensuring that the system operates according to the preset working state. The displacement sensor 12 monitors the position of the sealing plate 3, ensuring that the opening and closing actions of the sealing plate 3 meet the requirements, and promptly reports the actual position of the sealing plate 3 to prevent depressurization failure due to incorrect positioning of the sealing plate 3.

[0058] In a second aspect of the embodiments of the present invention, as Figure 2 As shown, the control method for controlling the explosion-proof depressurization system in the ship's compartments includes:

[0059] In the compressed state, when the explosion-proof pressure relief system for ship compartments is in the compressed state, the piston rod of cylinder 402 pushes the sealing plate 3 against the sealing gasket 2 and maintains pressure on cylinder 402;

[0060] In standby mode, when the explosion-proof pressure relief system for ship cabins is in standby mode, the control component 5 monitors the values ​​of the first pressure sensor 9, the second pressure sensor 10, the third pressure sensor 11, and the displacement sensor 12 in real time. If the values ​​are different from the preset values, an alarm is triggered.

[0061] In the depressurization state, when the explosion-proof depressurization system for the ship's compartments is in the depressurization state, the piston rod of cylinder 402 disengages from the sealing plate 3, and the pressure inside compartment 1 is released from between the vent 1011 and the sealing plate 3.

[0062] In fire-fighting mode, when the explosion-proof pressure relief system for the ship's compartments is in fire-fighting mode, the piston rod of cylinder 402 disengages from the sealing plate 3, the pressure inside compartment 1 is released from between the vent 1011 and the sealing plate 3, and inert gas is introduced into compartment 1 through gas cylinder 401.

[0063] Based on the above technical solution, in the compressed state, the piston rod of cylinder 402 pushes the sealing plate 3 into close contact with the sealing gasket 2, and maintains pressure in cylinder 402 to ensure that the vent 1011 remains sealed. Through continuous pressure maintenance by cylinder 402, good sealing performance is maintained between the sealing plate 3 and the sealing gasket 2, preventing gas leakage or pressure changes when pressure relief is not required, and ensuring the normal operation of the system. In the standby state, the system monitors the data of the first pressure sensor 9, the second pressure sensor 10, the third pressure sensor 11 and the displacement sensor 12 in real time through the control component 5, and compares them with preset values. If the value deviates from the preset value, the system will issue an alarm. The real-time monitoring and early warning mechanism improves the system's response capability, enabling timely detection of pressure changes or equipment abnormalities, and avoiding safety hazards caused by problems such as uncontrolled air pressure, sensor failure, or misalignment of the sealing plate 3. In the depressurization state, the piston rod of the cylinder 402 disengages from the sealing plate 3, and the sealing plate 3 and the sealing gasket 2 disengage from each other. The excessive pressure in the compartment 1 is quickly released through the vent 1011, ensuring that the system can precisely control the release of excessive gas through the cylinder 402 when the pressure is too high, maintaining a safe air pressure level in the compartment 1 and preventing damage to the equipment in the compartment 1. In the fire-fighting state, in addition to releasing the pressure in the compartment 1, the system injects inert gas into the compartment 1 through the gas cylinder 401, using inert gas (such as nitrogen) to reduce the oxygen content in the compartment 1, quickly suppressing the fire source in the compartment 1, thereby achieving the fire extinguishing effect and preventing the fire from spreading.

[0064] More preferably, when the explosion-proof pressure relief system for ship cabins is in the compressed state, if the value detected by the second pressure sensor 10 is less than the preset value, the first solenoid valve 404 opens, the second solenoid valve 405 closes, the pressure relief valve 403 closes, and the gas in the gas cylinder 401 is introduced into the rodless chamber of the cylinder 402. The piston rod of the cylinder 402 presses the sealing plate 3 onto the sealing gasket 2. When the displacement sensor 12 detects the displacement signal of the sealing plate 3, and the second sensor detects that its value is equal to the preset value, the control component 5 determines that the sealing plate 3 has been compressed and closes the first solenoid valve 404. When the value detected by the second pressure sensor 10 is greater than the preset value, the second safety valve 8 opens until the value detected by the second pressure sensor 10 returns to the preset value, at which point the second safety valve 8 closes, and the explosion-proof pressure relief system for ship cabins switches from the compressed state to the standby state. When the system is in the compressed state, if the air pressure inside cylinder 402 detected by the second pressure sensor 10 is lower than the preset value, the first solenoid valve 404 opens, the second solenoid valve 405 closes, and the pressure relief valve 403 closes. Gas from cylinder 401 enters the rodless chamber of cylinder 402, pushing the piston rod to press the sealing plate 3. The system can precisely adjust the pressure of cylinder 402 in the compressed state to ensure that the sealing plate 3 is always in the correct position, effectively isolating the pressure inside and outside the chamber 1, and preventing leakage and unnecessary gas emission. When the displacement sensor 12 detects the displacement signal of the sealing plate 3 and it reaches the preset value with the value of the second pressure sensor 10, the system determines that the sealing plate 3 has been successfully compressed. The dual verification of the value greatly enhances the reliability of the system, ensuring that the sealing plate 3 can achieve the pressing effect in a timely and accurate manner, thereby maintaining the sealing state of the compartment 1. After the pressing operation of the sealing plate 3 is completed, the system can determine that the pressure has returned to the preset range based on the feedback from the pressure sensor and the displacement sensor 12, and automatically close the first solenoid valve 404. Then, the pressure in the cylinder 402 is adjusted through the second safety valve 8 to ensure that the system is in standby mode. The system automatically and smoothly transitions from the pressing state to the standby state, reducing the instability caused by frequent switching or improper operation, making the system more stable and faster in switching to the standby state, ready to respond to the next pressure relief demand or fire event at any time.

[0065] More preferably, when the explosion-proof pressure relief system for ship cabins is in standby mode, the first solenoid valve 404, the second solenoid valve 405, and the pressure relief valve 403 are all closed. When the value of the first sensor is lower than the preset value, the alarm module determines that the pressure of the gas cylinder 401 is insufficient and sounds an alarm. When the value of the second sensor is lower than the preset value, the alarm module determines that the sealing pressure of the sealing plate 3 is insufficient and sounds an alarm. When the value of the third sensor is greater than the preset value, and the displacement sensor 12 simultaneously shows a displacement signal, the alarm module determines that the sealing plate 3 is loose and sounds an alarm. At this time, the first safety valve 7 opens to relieve pressure. If the value of the third sensor does not recover to the preset value within a preset time, the explosion-proof pressure relief system for ship cabins switches from standby mode to pressure relief mode. The system monitors the working status of the sealing plate 3, gas cylinder 401, and cylinder 402 through the first pressure sensor 9, the second pressure sensor 10, and the third pressure sensor 11, respectively. It can automatically respond through the alarm module in case of abnormalities. Through real-time monitoring and automatic alarm functions, the system can accurately maintain the stability of standby mode and promptly handle any potential problems. The system's self-diagnostic capabilities enable real-time detection and alarms, reducing the tediousness of manual inspection and improving maintenance efficiency. When an abnormality is detected, the alarm module can automatically determine the type of problem and provide a clear warning, such as insufficient gas pressure in gas cylinder 401, etc. Poor sealing of plate 3 or loose sealing plate 3 provides operators with clear handling guidelines, reducing the possibility of operational errors. Operators can promptly understand the specific problems of the equipment and take corresponding measures, thereby improving equipment maintenance efficiency and extending equipment service life. By comparing the preset time with the duration after the first safety valve 7 is opened, when the value of the third pressure sensor 11 fails to recover to the preset value within the specified time, the system automatically switches from standby state to depressurization state, ensuring that the system will not be in an abnormal state for a long time, avoiding safety hazards or equipment damage in compartment 1 due to failure to switch states in time.

[0066] More preferably, when the explosion-proof pressure relief system for ship compartments is in a pressure relief state, the first solenoid valve 404 is closed, the second solenoid valve 405 is closed, the pressure relief valve 403 is opened, and the gas in the rodless chamber of cylinder 402 is released into the atmosphere through the pressure relief valve 403.

[0067] Specifically, the reading of the third pressure sensor 11 is approximately equal to atmospheric pressure, meaning that after the depressurization process ends, the system requires manual reset. Operators must personally verify and restore the system status after each depressurization process. This helps ensure that operators are fully aware of every step of the system's operation, avoiding unknown risks or errors that may arise after automatic system reset. During reset, operators can check the overall system condition to ensure there are no other potential faults or risks, providing additional safety and improving system maintenance efficiency. The explosion-proof depressurization system for ship cabins not only automatically handles emergencies during depressurization but also allows for more precise manual control and maintenance.

[0068] More preferably, when the control component 5 receives a fire signal, and the explosion-proof pressure relief system for the ship's compartment switches to fire-fighting mode, the first solenoid valve 404 closes, the second solenoid valve 405 opens, the pressure relief valve 403 opens, and the gas in the gas cylinder 401 is introduced into the compartment 1 through the second pipeline 407.

[0069] Specifically, the fire-fighting status has a higher priority than the compressed status, standby status, and depressurization status.

[0070] Upon receiving a fire signal, the system automatically switches to fire-fighting mode, opening the second solenoid valve 405 and the pressure relief valve 403. Inert gas from cylinder 401 is then introduced into compartment 1 via the second pipeline 407, rapidly reducing the oxygen concentration in compartment 1 and achieving fire suppression. This automated response allows the system to act quickly in the early stages of a fire, reducing fire spread and damage to compartment 1, and significantly improving fire suppression efficiency.

[0071] In summary, this invention provides an explosion-proof pressure relief system and its control method for ship cabins. A gas cylinder 401 is connected to cabin 1 via a second pipeline 407. A second solenoid valve 405 is installed on the second pipeline 407. The gas cylinder 401 contains inert gas. When a fire occurs inside cabin 1, the inert gas in the gas cylinder 401 can be introduced into cabin 1 through the second pipeline 407 by opening the second solenoid valve 405. The inert gas reduces the oxygen content in cabin 1, thereby extinguishing the fire and protecting the equipment inside cabin 1, reducing damage to the equipment.

[0072] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An explosion relief system for a cabin of a ship, the cabin (1) comprising a wall panel (101) having a relief opening (1011) formed therein, characterized in that, It comprises: A sealing gasket (2) is arranged outside the relief port (1011) and annularly arranged on the wall plate (101) outside the circumference of the relief port (1011); An enclosing plate (3) abuts the outer end of the sealing gasket (2); A pressing assembly (4) comprises a gas cylinder (401), a gas cylinder (402), a pressure relief valve (403), a first electromagnetic valve (404), and a second electromagnetic valve (405). The gas cylinder (402) is arranged outside the relief port (1011), the piston rod end of the gas cylinder (402) abuts the outer end of the enclosing plate (3), the pressure relief valve (403) is arranged at the rodless cavity of the gas cylinder (402), the gas cylinder (401) is communicated with the rodless cavity of the gas cylinder (402) through a first pipeline (406), the gas cylinder (401) is communicated with the cabin (1) through a second pipeline (407), the first electromagnetic valve (404) is arranged on the first pipeline (406), the second electromagnetic valve (405) is arranged on the second pipeline (407), and the gas cylinder (401) contains inert gas inside. A control assembly (5) is electrically connected with the pressure relief valve (403), the first electromagnetic valve (404), and the second electromagnetic valve (405).

2. The explosion relief system for a marine cabin according to claim 1, characterized in that, The inner end of the enclosing plate (3) is provided with a clamping groove (301), and the outer end of the sealing gasket (2) is fitted into the clamping groove (301).

3. The explosion relief system for a marine cabin according to claim 1, wherein It also comprises a limiting spring (6), both ends of which are arranged on the outer end of the enclosing plate (3) and the gas cylinder (402), respectively, and the limiting spring (6) is kept in a stretched state.

4. The explosion relief system for a marine cabin according to claim 1, wherein The enclosing plate (3) is provided with a first safety valve (7), the rodless cavity of the gas cylinder (402) is provided with a second safety valve (8), and the control assembly (5) is electrically connected with the first safety valve (7) and the second safety valve (8).

5. The explosion relief system for a marine cabin according to claim 4, wherein It also comprises a first pressure sensor (9), a second pressure sensor (10), a third pressure sensor (11), a displacement sensor (12), and an alarm module. The first pressure sensor (9) is arranged at the gas output end of the gas cylinder (401), the second pressure sensor (10) is arranged in the rodless cavity of the gas cylinder (402), the third pressure sensor (11) is arranged in the cabin (1), the displacement sensor (12) is arranged on the enclosing plate (3), and the first pressure sensor (9), the second pressure sensor (10), the third pressure sensor (11), and the displacement sensor (12) are electrically connected with the control assembly (5). The alarm module is electrically connected with the control assembly (5).

6. A control method of the explosion relief system for a ship cabin according to claim 5, characterized by, It comprises: A pressing state, when the ship cabin explosion-proof pressure relief system is in the pressing state, the piston rod of the gas cylinder (402) pushes the enclosing plate (3) to abut on the sealing gasket (2), and the gas cylinder (402) is pressure maintained; The standby state, when the ship cabin explosion-proof pressure relief system is in the standby state, the control assembly (5) monitors the values of the first pressure sensor (9), the second pressure sensor (10), the third pressure sensor (11) and the displacement sensor (12) in real time, and the alarm is given when the values are different from the preset values. The pressure relief state, when the ship cabin explosion-proof pressure relief system is in the pressure relief state, the piston rod of the cylinder (402) is separated from the abutment of the sealing plate (3), and the pressure in the cabin (1) is discharged from the discharge port (1011) and the sealing plate (3). The fire state, when the ship cabin explosion-proof pressure relief system is in the fire state, the piston rod of the cylinder (402) is separated from the abutment of the sealing plate (3), the pressure in the cabin (1) is discharged from the discharge port (1011) and the sealing plate (3), and the inert gas is input into the cabin (1) through the gas cylinder (401).

7. The control method according to claim 6, characterized by When the ship cabin explosion-proof pressure relief system is in the compression state, the second pressure sensor (10) monitors the value less than the preset value, the first electromagnetic valve (404) is opened, the second electromagnetic valve (405) is closed, the pressure relief valve (403) is closed, the gas in the gas cylinder (401) is introduced into the rodless cavity of the cylinder (402), and the piston rod of the cylinder (402) presses the sealing plate (3) on the sealing washer (2). When the displacement sensor (12) monitors the displacement signal of the sealing plate (3) and the second pressure sensor (10) monitors the value equal to the preset value, the control assembly (5) judges that the sealing plate (3) has been compressed and closes the first electromagnetic valve (404). When the value monitored by the second pressure sensor (10) is greater than the preset value, the second safety valve (8) is opened until the value monitored by the second pressure sensor (10) returns to the preset value, the second safety valve (8) is closed, and the ship cabin explosion-proof pressure relief system switches from the compression state to the standby state.

8. The control method according to claim 7, characterized by, When the ship cabin explosion-proof pressure relief system is in the standby state, the first electromagnetic valve (404), the second electromagnetic valve (405) and the pressure relief valve (403) are all closed. When the value of the first pressure sensor (9) is lower than the preset value, the alarm module judges that the pressure of the gas cylinder (401) is insufficient and gives an alarm. When the value of the second pressure sensor (10) is lower than the preset value, the alarm module judges that the sealing pressure of the sealing plate (3) is insufficient and gives an alarm. When the value of the third pressure sensor (11) is greater than the preset value and the displacement sensor (12) simultaneously generates a displacement signal, the alarm module judges that the sealing plate (3) is loose and gives an alarm. At this time, the first safety valve (7) is opened to relieve pressure. If the value of the third pressure sensor (11) does not return to the preset value within a preset time, the ship cabin explosion-proof pressure relief system switches from the standby state to the pressure relief state.

9. The control method according to claim 8, characterized by, When the ship cabin explosion-proof pressure relief system is in the pressure relief state, the first electromagnetic valve (404) is closed, the second electromagnetic valve (405) is closed, the pressure relief valve (403) is opened, and the gas in the rodless cavity of the cylinder (402) is discharged to the atmosphere through the pressure relief valve (403).

10. The control method according to claim 6, characterized by, When the ship cabin explosion-proof pressure relief system is switched to the fire-fighting state after receiving the fire signal by the control assembly (5), the first electromagnetic valve (404) is closed, the second electromagnetic valve (405) is opened, the pressure relief valve (403) is opened, and the gas in the gas cylinder (401) is introduced into the cabin (1) through the second pipeline (407).

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