Monitoring system for air quality of vehicle cabin of roll-on-roll-off ship

Abstract

The utility model provides a roll-on-roll-off ship vehicle cabin air quality monitoring system, which comprises an electric control box, a plurality of exhaust fans and a plurality of groups of gas probe assemblies, the electric control box and the plurality of exhaust fans are arranged outside a vehicle cabin, each exhaust fan is communicated with the interior of the vehicle cabin through an air duct, and the gas probe assemblies are arranged in the air duct. The multiple sets of gas probe assemblies are all arranged in a vehicle cabin, the electric cabinet is connected with a ship automation machine alarm system through a first control line and an alarm line, the electric cabinet is connected with a data collecting and monitoring control system through a second control line, and each exhaust fan is connected with the electric cabinet through a power line and a fan control line. A power line and a fan control line on each exhaust fan are respectively connected with a frequency converter; and the plurality of groups of gas probe assemblies are connected with the electric cabinet through a plurality of power supply signal lines. The roll-on-roll-off ship vehicle cabin air quality monitoring system can monitor the air quality in a PCTC vehicle cabin in real time so as to guarantee safety, and meanwhile fan energy consumption is reduced so as to save ship operation cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship ventilation, and particularly relates to an air quality monitoring system for a ro-ro ship vehicle cabin. Background Art

[0002] The vehicle cabin of a PCTC (pure car and truck carrier) is mainly used for transporting vehicles, permitted goods, and restricted dangerous goods. In the PCTC vehicle cabin, automobile exhaust gas and flammable and explosive gases are generated, which are simply referred to as dangerous gases. If flammable and explosive gases accumulate in the PCTC vehicle cabin, there will be a fire hazard. The exhaust gas of motor vehicles parked in the PCTC vehicle cabin contains a large amount of harmful substances, mainly CO (carbon monoxide), NO (nitric oxide), and NO2 (nitrogen dioxide). These harmful substances will affect human health and safety in many ways and even endanger life. In order to prevent dangerous gases from accumulating in the PCTC vehicle cabin, the PCTC vehicle cabin is equipped with a ventilation system to timely discharge the dangerous gases in the PCTC vehicle cabin and inject fresh air. The problem is that if the vehicle cabin fan is blindly allowed to run at full load all the time, it will cause excessive unnecessary energy consumption losses; if the fan is blindly run at low load or even not run at all for energy conservation, the dangerous gases in the PCTC vehicle cabin cannot be detected and discharged in time, which poses a great safety hazard. Content of the Utility Model

[0003] In view of the above problems, the utility model provides an air quality monitoring system for a ro-ro ship vehicle cabin, which can monitor the air quality in the PCTC vehicle cabin in real time to ensure safety, and at the same time reduce the energy consumption of the fan to save the ship operation cost.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] An air quality monitoring system for a ro-ro ship vehicle cabin, comprising an electric control box, a plurality of exhaust fans, and multiple groups of gas probe assemblies. The electric control box and the plurality of exhaust fans are both arranged outside the vehicle cabin. Each exhaust fan is connected to the inside of the vehicle cabin through a duct. The multiple groups of gas probe assemblies are all arranged inside the vehicle cabin. The electric control box is connected to the ship automation machine alarm system through a first control line and an alarm line. The electric control box is connected to a data acquisition and monitoring control system through a second control line. Each exhaust fan is connected to the electric control box through a power line and a fan control line. The power line and the fan control line on each exhaust fan are respectively connected to a frequency converter; the multiple groups of gas probe assemblies are connected to the electric control box through a plurality of power signal lines.

[0006] Further, a wind gate is arranged at the inlet end of each exhaust fan, and the wind gate is connected to the electric control box through a power control line.

[0007] Further, a plurality of the exhaust fans are symmetrically arranged on both sides of the vehicle cabin.

[0008] Further, the number of the exhaust fans is four, two of which are symmetrically arranged on both sides of the tail of the PCTC vehicle cabin, and two of which are symmetrically arranged on both sides of the head of the PCTC vehicle cabin.

[0009] Further, every two groups of the plurality of gas probe assemblies are connected in series to a power signal line, and the two groups of gas probe assemblies connected in series to the same power signal line are arranged symmetrically with respect to the central axis in the length direction of the PCTC vehicle cabin.

[0010] Further, each group of the gas probe assemblies includes a CO probe, a NO x probe and a lower explosive limit probe.

[0011] Further, the number of the gas probe assemblies is six groups, which are respectively arranged at the head, middle and tail in the length direction of the PCTC vehicle cabin.

[0012] The air quality monitoring system for the vehicle cabin of the ro-ro ship of the present invention can monitor the air quality in the PCTC vehicle cabin in real time, and while ensuring safety, can reduce the energy consumption of the fans and save the operation cost of the ship. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the air quality monitoring system for the vehicle cabin of the ro-ro ship of the present invention.

[0014] Wherein, 1 - CO probe; 2 - NOx probe; 3 - lower explosive limit probe; 4 - power signal line; 5 - electric control box; 6 - first control line; 7 - alarm line; 8 - ship automation and alarm system; 9 - data acquisition and monitoring control system; 10 - second control line; 11 - power line; 12 - fan control line; 13 - power control line; 14 - frequency converter; 15 - exhaust fan; 16 - air damper; 17 - air duct; 18 - PCTC vehicle cabin. Detailed Embodiment

[0015] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0016] As Figure 1As shown in the figure, a vehicle cabin air quality monitoring system for a ro-ro ship includes an electric control box 5, multiple exhaust fans 15 and multiple groups of gas probe assemblies. The electric control box 5 and the multiple exhaust fans 15 are both arranged outside the PCTC vehicle cabin 18. Each exhaust fan 15 is connected to the inside of the PCTC vehicle cabin 18 through a duct 17. The multiple groups of gas probe assemblies are all arranged inside the PCTC vehicle cabin 18. The electric control box 5 is connected to the ship automation alarm system through a first control line 6 and an alarm line 7. The electric control box 5 is connected to a data acquisition and monitoring control system through a second control line 10. Each exhaust fan 15 is connected to the electric control box 5 through a power line 11 and a fan control line 12. The power line 11 and the fan control line 12 on each exhaust fan 15 are respectively connected to an inverter 14. The multiple groups of gas probe assemblies are connected to the electric control box 5 through multiple power signal lines 4. Each group of gas probe assemblies includes a CO probe 1, a NOx probe 2 and a lower explosion limit probe 3. Here, the PCTC vehicle cabin 18 mainly includes the vehicle cabins of cargo ro-ro ships, passenger ro-ro ships, vehicle carriers, etc.

[0017] It can be understood that the CO probe 1, the NOx probe 2 and the lower explosion limit probe 3 are arranged in the PCTC vehicle cabin 18. The CO probe 1 is responsible for monitoring the concentration of carbon monoxide in the air of the PCTC vehicle cabin 18. The NOx probe 2 is responsible for monitoring the concentration of nitrogen oxides in the air of the PCTC vehicle cabin 18. The lower explosion limit probe 3 is responsible for monitoring the concentration of explosive gases in the air of the PCTC vehicle cabin 18. When any one of the three probes monitors that the air quality in the vehicle cabin exceeds the standard value and lasts for a period of time, a signal will be transmitted to the electric control box 5. The electric control box 5 will transmit the alarm signal to the ship automation and alarm system 8, and at the same time transmit the monitoring signal to the ship automation and alarm system 8 or the data acquisition and monitoring control system 9. After judgment and processing, a control signal will be sent to the electric control box 5, and finally the speed of the fan motor will be increased through the inverter 14, so as to increase the air volume of the fan, improve the ventilation and air change rate of the PCTC vehicle cabin 18 to dilute and quickly discharge the dangerous gases as soon as possible. In this way, the air quality in the PCTC vehicle cabin 18 can be monitored in real time, providing a reliable guarantee for safety. When the three probes monitor that the air quality in the PCTC vehicle cabin 18 does not exceed the standard value, a signal will be transmitted to the electric control box 5. The electric control box 5 will transmit the alarm signal to the ship automation and alarm system 8, and at the same time transmit the monitoring signal to the ship automation and alarm system 8 or the data acquisition and monitoring control system 9. After judgment and processing, a control signal will be sent to the electric control box 5, and finally the speed of the fan motor will be reduced through the inverter 14, so as to reduce the air volume of the fan and reduce the ventilation and air change rate of the PCTC vehicle cabin 18 to the minimum value required by the specification. In this way, the fan energy consumption can be reduced and the ship operation cost can be saved.

[0018] Further, a wind damper 16 is provided at the inlet end of each exhaust fan 15, and the wind damper 16 is connected to the electric control box 5 through a power control line 13. The wind damper 16 is a fireproof wind damper 16 or a shut-off wind damper 16. It can be understood that the setting of the wind damper 16 can limit the spread of fire when a fire occurs inside the PCTC vehicle compartment 18, ensuring that the fire source can be effectively isolated in case of a fire and preventing the fire from spreading and expanding through the ventilation system such as the air duct 17.

[0019] Further, a plurality of the exhaust fans 15 are symmetrically arranged on both sides of the PCTC vehicle compartment 18. It can be understood that the area of the PCTC vehicle compartment 18 is very large. If the exhaust fans 15 are only arranged on one side of the PCTC vehicle compartment 18, it is difficult to ensure that all the harmful gases inside the PCTC vehicle compartment 18 are exhausted. Arranging the exhaust fans 15 on both sides of the PCTC vehicle compartment 18 can ensure the comprehensiveness of the internal exhaust of the PCTC vehicle compartment 18.

[0020] In this embodiment, the number of the exhaust fans 15 is 4. Two are symmetrically arranged on both sides of the tail of the PCTC vehicle compartment 18, and two are symmetrically arranged on both sides of the head of the PCTC vehicle compartment 18. In other embodiments, more groups of exhaust fans 15 can be set according to the length of the PCTC vehicle compartment 18, such as 3 groups, 4 groups or 5 groups, etc.

[0021] Further, every two groups of the plurality of gas probe assemblies are connected in series to a power signal line 4, and the two groups of gas probe assemblies connected in series to the same power signal line 4 are symmetrically arranged with respect to the central axis in the length direction of the PCTC vehicle compartment 18.

[0022] It can be understood that the area of the PCTC vehicle compartment 18 is very large. If the gas probe assemblies are arranged unevenly, such as only on one side or at one place inside the PCTC vehicle compartment 18, it is difficult to ensure that an alarm can be given in time and exhaust treatment can be carried out when there are excessive harmful gases inside the PCTC vehicle compartment 18. Arranging the gas probe assemblies on the left and right sides inside the PCTC vehicle compartment 18 can ensure the comprehensiveness of monitoring and the timeliness of alarm and exhaust.

[0023] In this embodiment, the number of the gas probe assemblies is 6 groups, which are respectively arranged at the head, middle and tail in the length direction of the PCTC vehicle compartment 18. Of course, in other embodiments, other numbers of gas probe assemblies can be set according to the length and width of the PCTC vehicle compartment 18, such as 2 groups, 3 groups, 4 groups or 5 groups, etc.

[0024] Those of ordinary skill in the art should understand that: the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ro-ro ship vehicle hold air quality monitoring system, characterized in that, It includes an electric control box, multiple exhaust fans and multiple groups of gas probe assemblies. The electric control box and the multiple exhaust fans are both arranged outside the vehicle cabin. Each exhaust fan is communicated with the inside of the vehicle cabin through a duct. The multiple groups of gas probe assemblies are all arranged inside the vehicle cabin. The electric control box is connected to a ship automation machine alarm system through a first control line and an alarm line. The electric control box is connected to a data acquisition and monitoring control system through a second control line. Each exhaust fan is connected to the electric control box through a power line and a fan control line. The power line and the fan control line on each exhaust fan are respectively connected to a frequency converter. The multiple groups of gas probe assemblies are connected to the electric control box through multiple power signal lines.

2. The ro-ro ship vehicle hold air quality monitoring system according to claim 1, characterized in that A wind gate is arranged at the inlet end of each exhaust fan. The wind gate is connected to the electric control box through a power control line.

3. The ro-ro ship vehicle cabin air quality monitoring system according to claim 1, characterized in that, The multiple exhaust fans are symmetrically arranged on both sides of the vehicle cabin.

4. The ro-ro ship vehicle hold air quality monitoring system according to claim 2, characterized in that, The number of the exhaust fans is 4. Two are symmetrically arranged on both sides of the tail of the PCTC vehicle cabin, and two are symmetrically arranged on both sides of the head of the PCTC vehicle cabin.

5. The ro-ro ship vehicle hold air quality monitoring system according to claim 1, characterized in that, Among the multiple groups of gas probe assemblies, every two groups are connected in series on a power signal line. The two groups of gas probe assemblies connected in series on the same power signal line are symmetrically arranged with respect to the central axis in the length direction of the PCTC vehicle cabin.

6. The air quality monitoring system for the vehicle compartment of a roll-on / roll-off ship according to claim 5, wherein Each of the gas probe assemblies includes a CO probe, a NO x probe, and a lower explosive limit probe.

7. The ro-ro ship vehicle hold air quality monitoring system according to claim 6, characterized in that, The number of the gas probe assemblies is 6 groups, which are respectively arranged at the head, middle and tail in the length direction of the PCTC vehicle cabin.

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