Ventilation system for ship methanol fuel technology place

Abstract

The utility model provides a ship methanol fuel technology place ventilation system which comprises a plurality of methanol fuel technology places, the plurality of methanol fuel technology places are communicated with a first air inlet through a plurality of air supply pipelines which are connected in parallel, and the plurality of methanol fuel technology places are communicated with a first air outlet through air exhaust pipelines. An anti-explosion exhaust fan is connected to the side, close to the exhaust outlet, of the exhaust pipeline. The ventilation system for the ship methanol fuel technology site can safely and effectively exhaust leaked methanol gas, and provides safety guarantee for ship operation and personnel operation.

Description

Technical Field

[0001] This utility model belongs to the field of marine ventilation technology, and specifically relates to a ventilation system for marine methanol fuel technology spaces. Background Technology

[0002] With increasing global environmental awareness and the urgency of achieving carbon neutrality, the shipping industry is vigorously promoting the application of green alternative fuels. Among many alternative fuels, methanol, due to its unique advantages, has become a development direction for new green fuels in the shipping industry and is gradually becoming the preferred solution for future marine fuels. However, as a hazardous chemical, methanol has a low flash point and is highly volatile. If leaked and exposed to open flames or high temperatures, it can easily cause fires or explosions and pose a hazard to human health. This necessitates the installation of safe and reliable ventilation systems in methanol-related facilities. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a ventilation system for ship methanol fuel facilities, which can safely and effectively discharge leaked methanol gas, providing safety assurance for ship operation and personnel operations.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A ventilation system for methanol fuel technology spaces on ships includes multiple methanol fuel technology spaces. The multiple methanol fuel technology spaces are connected to a first air inlet through multiple parallel air supply ducts, and the multiple methanol fuel technology spaces are connected to a first air outlet through exhaust ducts. An explosion-proof exhaust fan is connected to the side of the exhaust duct near the first air outlet.

[0006] Furthermore, each of the air supply ducts is connected to a shut-off damper at one end within the methanol fuel technology space; and each of the exhaust ducts is connected to a shut-off and regulating damper at one end within the methanol fuel technology space.

[0007] Furthermore, the plurality of methanol fuel technology facilities include a methanol fuel main unit, a methanol fuel preparation room, a methanol fuel tank connection room, two methanol ventilation double-wall pipes, a starboard methanol fuel refueling station, and a port methanol fuel refueling station. The methanol fuel main unit is connected to the methanol fuel preparation room via two methanol ventilation double-wall pipes. One of the methanol ventilation double-wall pipes is connected to a first air inlet via an air supply duct. This methanol ventilation double-wall pipe is connected to the methanol supply system in the methanol material storage room. The other methanol ventilation double-wall pipe is connected to a first exhaust outlet via a first exhaust duct. This methanol ventilation double-wall pipe is connected to the methanol collection system in the methanol material storage room. The methanol fuel preparation room, the methanol fuel tank connection room, the methanol ventilation double-wall pipe, the starboard methanol fuel refueling station, and the port methanol fuel refueling station are connected to the first exhaust outlet via a second exhaust duct. A first explosion-proof exhaust fan is installed on the side of the first exhaust duct near the first exhaust outlet, and an explosion-proof dual-speed exhaust fan is installed on the side of the second exhaust duct near the first exhaust outlet.

[0008] Furthermore, a shut-off damper is provided on the air inlet side of the air supply duct that is connected to the methanol ventilation double-wall pipe.

[0009] Furthermore, a signal line is connected between the second exhaust ducts located on both sides of the explosion-proof dual-speed exhaust fan, and a differential pressure sensor is installed on the signal line; a signal line is connected between the first exhaust ducts located on both sides of the first explosion-proof exhaust fan, and a differential pressure switch is installed on the signal line.

[0010] Furthermore, there are multiple explosion-proof dual-speed exhaust fans and multiple first explosion-proof exhaust fans, with multiple explosion-proof dual-speed exhaust fans connected in parallel and multiple first explosion-proof exhaust fans connected in parallel.

[0011] Furthermore, a methanol fuel preparation chamber airlock is provided at opposite corners within the methanol fuel preparation chamber, and a methanol fuel tank connection chamber airlock is provided at a corner within the methanol fuel tank connection chamber. A port-side methanol fuel refueling station airlock and a starboard-side methanol fuel refueling station airlock are respectively provided on the outer side of the port-side and starboard-side methanol fuel refueling stations. All three airlocks—the methanol fuel preparation chamber airlock, the methanol fuel tank connection chamber airlock, the port-side methanol fuel refueling station airlock, and the starboard-side methanol fuel refueling station airlock—are connected to a second air inlet via an airlock supply duct. All three airlocks are also connected to a second exhaust outlet via an airlock exhaust duct. At least one second explosion-proof exhaust fan is provided on the outlet side of the airlock supply duct.

[0012] Furthermore, there are no fewer than two second explosion-proof exhaust fans, and multiple second explosion-proof exhaust fans are connected in parallel.

[0013] Furthermore, the air supply duct of each airlock is connected to a closing and regulating damper at one end within each airlock, and the exhaust duct of each airlock is connected to a closing damper at one end within each airlock.

[0014] Furthermore, a differential pressure switch is installed inside the airlock of the methanol fuel preparation room, the airlock of the methanol fuel tank connection room, the airlock of the port methanol fuel refueling station, and the airlock of the starboard methanol fuel refueling station. The differential pressure switch is installed on a pressure regulating pipe, with the two ends of the pressure regulating pipe located in the airlock where the differential pressure switch is located and in the methanol fuel technical area where the airlock is located, respectively.

[0015] This utility model's ship methanol fuel technology ventilation system can safely and effectively discharge leaked methanol gas, providing safety assurance for ship operation and personnel operation; the configuration of one working and one standby explosion-proof fan can avoid the emergency shutdown of the methanol system due to ventilation failure; the fan differential pressure sensor and fan differential pressure switch can ensure the monitoring of the fan's operating status; the room differential pressure switch can ensure the monitoring of airlock chamber depressurization. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the ventilation system for the ship methanol fuel technology described in this utility model.

[0017] Among them, 1-methanol fuel main unit, 2-methanol fuel preparation room, 3-methanol fuel preparation room airlock, 4-methanol supply system, 5-methanol fuel tank connection room, 6-methanol fuel tank connection room airlock, 7-methanol ventilation double-wall pipe, 8-port side methanol fuel refueling station, 9-starboard side methanol fuel refueling station, 10-port side methanol fuel refueling station airlock, 11-starboard side methanol fuel refueling station airlock, 12-first air inlet, 13-first exhaust duct, 14- 15-Second exhaust duct, 16-Explosion-proof dual-speed exhaust fan, 17-First explosion-proof exhaust fan, 18-Differential pressure sensor, 19-Signal line, 20-Airlock exhaust duct, 21-Second exhaust vent, 22-Second air inlet, 23-Second explosion-proof exhaust fan, 24-Differential pressure switch, 25-Close and regulate airlock, 26-Close airlock, 27-Methanol collection system, 28-Check airlock, 29-Air supply duct, 30-Airlock air supply duct. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1As shown, a ventilation system for a ship's methanol fuel technology space includes multiple methanol fuel technology spaces. These spaces are connected to a first air inlet 12 via multiple parallel air supply ducts 29. The spaces are also connected to a first exhaust outlet 14 via exhaust ducts. An explosion-proof exhaust fan is connected to the side of each exhaust duct near the first exhaust outlet 14. Each air supply duct has a shut-off damper 26 at one end within the methanol fuel technology space, and each exhaust duct has a shut-off and regulating damper 25 at one end within the methanol fuel technology space.

[0020] In this embodiment, the plurality of methanol fuel technology facilities include a methanol fuel main unit 1, a methanol fuel preparation room 2, a methanol fuel tank connection room 5, a methanol ventilation double-wall pipe 7, a starboard methanol fuel refueling station 9, and a port methanol fuel refueling station 8. The methanol fuel main unit 1 is connected to the methanol fuel preparation room 2 via two methanol ventilation double-wall pipes 7. One of the methanol ventilation double-wall pipes 7 is connected to the first air inlet 12 via an air supply duct 29. This methanol ventilation double-wall pipe 7 is connected to the methanol supply system 4 within the methanol fuel preparation room 2. The other methanol ventilation double-wall pipe 7 is connected to... The methanol ventilation double-wall pipe 7 is connected to the methanol collection system 27 in the methanol material storage room 2 via the first exhaust duct 13 and the first exhaust outlet 14. The methanol fuel preparation room 2, the methanol fuel tank connection room 5, the methanol ventilation double-wall pipe 7, the starboard methanol fuel refueling station 9, and the port methanol fuel refueling station 8 are connected to the first exhaust outlet 14 via the second exhaust duct 15. A first explosion-proof exhaust fan 17 is provided on the side of the first exhaust duct 13 near the first exhaust outlet 14, and an explosion-proof dual-speed exhaust fan 16 is provided on the side of the second exhaust duct 15 near the first exhaust outlet 14. A backflow preventer 28 is provided at the outlet of both the first explosion-proof exhaust fan 17 and the explosion-proof dual-speed exhaust fan 16, and a closing damper 26 is provided on the air inlet side of the air supply duct 29 connected to the methanol ventilation double-wall pipe 7.

[0021] When the methanol fuel main unit 1 is working, the explosion-proof dual-speed exhaust fan 16 and the first explosion-proof exhaust fan 17 need to run continuously to ensure the ventilation of the methanol fuel preparation room 2, the methanol fuel tank connection room 5, and the methanol ventilation double-wall pipe 7. Fresh air from the outside is delivered to the relevant places through the first air inlet 12 and the air supply pipe 29, and then discharged by the explosion-proof dual-speed exhaust fan 16 and the first explosion-proof exhaust fan 17 through the first exhaust pipe 13, the second exhaust pipe 15, and the first exhaust outlet 14.

[0022] A signal line 19 is connected between the second exhaust ducts 15 located on both sides of the explosion-proof dual-speed exhaust fan 16, and a differential pressure sensor 18 is provided on the signal line 19; a signal line 19 is connected between the first exhaust ducts 13 located on both sides of the first explosion-proof exhaust fan 17, and a differential pressure switch 24 is provided on the signal line 19.

[0023] The number of explosion-proof dual-speed exhaust fans 16 and first explosion-proof exhaust fans 17 are both multiple, with multiple explosion-proof dual-speed exhaust fans 16 connected in parallel and multiple first explosion-proof exhaust fans 17 connected in parallel. In this embodiment, the number of explosion-proof dual-speed exhaust fans 16 and first explosion-proof exhaust fans 17 are both two.

[0024] The explosion-proof dual-speed exhaust fan 16 is configured with one fan in operation and one on standby, powered by different power sources. One fan operates continuously, and the other is activated when one fan fails. Each explosion-proof dual-speed exhaust fan 16 is equipped with a backflow preventer 28 to prevent ventilation short circuits. The explosion-proof dual-speed exhaust fan 16 is a dual-speed fan. In addition to its built-in fault alarm system, it is also equipped with a differential pressure sensor 18 to ensure monitoring of the fan. Under normal operating conditions, it operates at low speed to achieve at least 30 ventilation cycles per hour. When a methanol fuel leak is detected in the methanol fuel preparation room 2, the methanol fuel tank connection room 5, the port methanol fuel refueling station 8, or the starboard methanol fuel refueling station 9, the explosion-proof dual-speed exhaust fan 16 operates at high speed to quickly exhaust methanol gas.

[0025] The first explosion-proof exhaust fan 17 is configured with one in operation and one on standby, powered by different power sources. One fan operates continuously, and when one fan fails, the other fan is activated. Each of the first explosion-proof exhaust fans 17 is equipped with a backflow preventer 28 to prevent short circuits in the ventilation system. The first explosion-proof exhaust fan 17 is responsible for the ventilation of the methanol ventilation double-wall duct 7. In addition to the fan's own fault alarm system, it is also equipped with a differential pressure switch 24 to ensure monitoring of the fan. In the event of a fire, the shut-off dampers 26 on the supply duct 29 and the exhaust duct shut off the ventilation.

[0026] Furthermore, a methanol fuel preparation chamber airlock 3 is provided at opposite corners within the methanol fuel preparation chamber 2, and a methanol fuel tank connection chamber airlock 6 is provided at a corner within the methanol fuel tank connection chamber 5. A port side methanol fuel refueling station airlock 10 and a starboard side methanol fuel refueling station airlock 11 are respectively provided on the outer side of the port side methanol fuel refueling station 8 and starboard side methanol fuel refueling station 9. The methanol fuel preparation chamber airlock 3, the methanol fuel tank connection chamber airlock 6, and the port side methanol fuel refueling station airlock 10... The airlock chamber 11 of the starboard methanol fuel refueling station is connected to the second air inlet 22 through an airlock air supply duct 30. The airlock chamber 3 of the methanol fuel preparation room, the airlock chamber 6 of the methanol fuel tank connecting room, the airlock chamber 10 of the port methanol fuel refueling station, and the airlock chamber 11 of the starboard methanol fuel refueling station are all connected to the second exhaust outlet 21 through an airlock exhaust duct 20. At least one second explosion-proof exhaust fan 23 is provided on the inlet side of the airlock air supply duct 30, and a backflow preventer 28 is provided at the outlet of each of the second explosion-proof exhaust fans 23.

[0027] Furthermore, there are no fewer than two second explosion-proof exhaust fans 23, and multiple second explosion-proof exhaust fans 23 are connected in parallel.

[0028] In this embodiment, the second explosion-proof exhaust fan 23 is configured as a standby unit, powered by different power sources. One fan runs continuously, and when one fan fails, the other fan is started. Fresh air from the outside is drawn in by the second explosion-proof exhaust fan 23 through the second air inlet 22 and delivered to the methanol fuel preparation room airlock 3, the methanol fuel preparation room airlock 4, the methanol fuel tank connecting room airlock 6, the port side methanol fuel refueling station airlock 10, and the starboard side methanol fuel refueling station airlock 11 through the airlock air supply duct 30. This maintains positive pressure in each airlock to prevent methanol gas from spreading out of adjacent hazardous areas in case of leakage. The exhaust air from each airlock is discharged from the second exhaust port 21 through the airlock exhaust duct 20.

[0029] Furthermore, the air supply duct 30 of each airlock is connected to a closing and regulating damper 25 at one end in each airlock, and the exhaust duct 20 of each airlock is connected to a closing damper 26 at one end in each airlock.

[0030] Furthermore, a differential pressure switch 24 is provided inside the airlock 3 of the methanol fuel preparation room, the airlock 6 of the methanol fuel tank connection room, the airlock 10 of the port methanol fuel refueling station, and the airlock 11 of the starboard methanol fuel refueling station. The differential pressure switch 24 is located on a pressure regulating pipe, with the two ends of the pressure regulating pipe located in the airlock where the differential pressure switch 24 is located and in the methanol fuel technical area where the airlock is located, respectively.

[0031] In the methanol fuel preparation room 2, methanol fuel tank connection room 5, port side methanol fuel refueling station 8 and starboard side methanol fuel refueling station 9, the air supply duct 29 is equipped with a closing damper 26, and the exhaust duct is equipped with a closing and regulating damper 25. Under normal operating conditions, both dampers are in the open state, and they will automatically close in the event of a fire.

[0032] To enter or exit the methanol fuel preparation room 2, one must pass through two methanol fuel preparation room airlocks 3. Each methanol fuel preparation room airlock 3 has a corresponding closing and regulating damper 25 on its air supply duct 30, and a corresponding closing damper 26 on its exhaust duct. Each airlock is also equipped with a differential pressure switch 24 to monitor the pressure difference between the methanol fuel preparation room airlock 3 and the methanol fuel preparation room 2. An alarm will be triggered when the airlock loses pressure.

[0033] Entering and exiting the methanol fuel tank connecting chamber 5 requires passing through the methanol fuel tank connecting chamber airlock 6. The airlock air supply duct 30 of the methanol fuel tank connecting chamber airlock 6 is equipped with a closing and regulating air damper 25, and the air exhaust duct of the airlock is equipped with a closing air damper 26. The airlock is equipped with a differential pressure switch 24 to monitor the pressure difference between the methanol fuel tank connecting chamber airlock 6 and the methanol fuel tank connecting chamber 5. When the methanol fuel tank connecting chamber airlock 6 loses pressure, an alarm will be triggered.

[0034] The port side methanol refueling station 8 needs to pass through the port side methanol refueling station airlock 10. The airlock air supply duct 30 of the port side methanol refueling station airlock 10 is equipped with a closing and regulating air damper 25, and the air exhaust duct of the airlock is equipped with a closing air damper 26. The port side methanol refueling station airlock 10 is equipped with a differential pressure switch 24 to monitor the pressure difference between the port side methanol refueling station airlock 10 and the port side methanol refueling station 8. When the port side methanol refueling station is on the right...

[0035] The starboard methanol refueling station 9 needs to pass through the starboard methanol refueling station airlock 11. The airlock air supply duct 30 of the starboard methanol refueling station airlock 11 is equipped with a closing and regulating air damper 25, and the airlock exhaust duct is equipped with a closing air damper 26. The port methanol refueling station airlock 10 is equipped with a differential pressure switch 24 to monitor the pressure difference between the starboard methanol refueling station airlock 11 and the starboard methanol refueling station 9. When the starboard methanol refueling station airlock 11 loses pressure, an alarm will be issued.

[0036] Those skilled in the art should understand that the above description is merely a specific embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A methanol fuel service vent system for a marine vessel, comprising: The methanol fuel technology space includes a plurality of methanol fuel technology spaces, a plurality of parallel air supply pipes and a first air inlet, a plurality of air exhaust pipes and a first air outlet; the methanol fuel technology space includes a methanol fuel main machine, a methanol fuel preparation room, a methanol fuel cabin connecting room, two methanol ventilation double-wall pipes, a right methanol fuel filling station and a left methanol fuel filling station, the methanol fuel main machine is communicated with the methanol fuel preparation room through the two methanol ventilation double-wall pipes, one of the methanol ventilation double-wall pipes is communicated with the first air inlet through an air supply pipe, the methanol ventilation double-wall pipe is connected with a methanol supply system in the methanol material storage room, the other methanol ventilation double-wall pipe is communicated with the first air outlet through the first air exhaust pipe, the methanol ventilation double-wall pipe is connected with a methanol collection system in the methanol material storage room; the methanol fuel preparation room, the methanol fuel cabin connecting room, the methanol ventilation double-wall pipe, the right methanol fuel filling station and the left methanol fuel filling station are communicated with the first air outlet through the second air exhaust pipe, at least two first explosion-proof exhaust fans are arranged in parallel on the side of the first air exhaust pipe close to the first air outlet, and at least two explosion-proof double-speed exhaust fans are arranged in parallel on the side of the second air exhaust pipe close to the first air outlet; A signal line is connected between the second air exhaust pipes on the two sides of the explosion-proof double-speed exhaust fan, and a differential pressure sensor is arranged on the signal line; a signal line is connected between the first air exhaust pipes on the two sides of the first explosion-proof exhaust fan, and a differential pressure switch is arranged on the signal line; A methanol fuel preparation room air lock chamber is arranged in each of the opposite corners in the methanol fuel preparation room, a methanol fuel cabin connecting room air lock chamber is arranged at a corner in the methanol fuel cabin connecting room, and a left methanol fuel filling station air lock chamber and a right methanol fuel filling station air lock chamber are arranged on the outer side of the left methanol fuel filling station and the right methanol fuel filling station respectively; A differential pressure switch is arranged in each of the methanol fuel preparation room air lock chamber, the methanol fuel cabin connecting room air lock chamber, the left methanol fuel filling station air lock chamber and the right methanol fuel filling station air lock chamber, the differential pressure switch is arranged on a pressure regulating pipe, and the two ends of the pressure regulating pipe are located in the air lock chamber and the methanol fuel technology space respectively.

2. A ventilation system for a methanol fuel service area of a marine vessel as defined in claim 1, wherein, A closing air lock is connected to one end of each air supply pipe in the methanol fuel technology space; and a closing and adjusting air lock is connected to one end of each air exhaust pipe in the methanol fuel technology space.

3. A ventilation system for a methanol fuel service area of a marine vessel as defined in claim 2, wherein, A closing air lock is arranged on the air inlet side of the air supply pipe communicated with the methanol ventilation double-wall pipe.

4. A ventilation system for a methanol fuel service area of a marine vessel as claimed in claim 3, wherein, The methanol fuel preparation room air lock chamber, the methanol fuel tank connecting room air lock chamber, the left methanol fuel filling station air lock chamber and the right methanol fuel filling station air lock chamber are communicated with the second air inlet through an air lock chamber air supply pipeline, the methanol fuel preparation room air lock chamber, the methanol fuel tank connecting room air lock chamber, the left methanol fuel filling station air lock chamber and the right methanol fuel filling station air lock chamber are communicated with the second air exhaust through an air lock chamber air exhaust pipeline, and at least one second explosion-proof air exhaust fan is arranged at the outlet side of the air lock chamber air supply pipeline.

5. A ventilation system for a methanol fuel service area of a marine vessel as claimed in claim 4, wherein, The number of the second explosion-proof air exhaust fans is not less than two, and the multiple second explosion-proof air exhaust fans are arranged in parallel.

6. A ventilation system for a methanol fuel service area of a marine vessel as claimed in claim 5, wherein, One end of the air lock chamber air supply pipeline in each air lock chamber is connected with a closing and adjusting air lock, and one end of the air lock chamber air exhaust pipeline in each air lock chamber is connected with a closing air lock.

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