Marine container type mobile power supply fire alarm control and monitoring system

Abstract

The utility model provides a fire alarm control and monitoring system for a marine container type mobile power supply. The fire alarm control and monitoring system comprises a PLC-based central control unit; the alarm unit and the fire-fighting unit are connected with the central control unit; the box body door monitoring unit is connected with the central control unit and is used for monitoring the opening and closing states of a plurality of battery box body doors; the fire alarm unit is connected with the central control unit and is used for detecting a fire condition in the battery box body in real time; the fire-fighting state monitoring unit is connected with the central control unit and is used for checking whether the fire extinguishing device acts or not after the fire is confirmed and detecting the release state of the fire extinguishing agent; the fire pre-alarm unit is connected with the central control unit and is used for sending a fire pre-alarm signal; and the emergency fan unit is connected with the central control unit and is used for starting an emergency fan to lower the concentration of the combustible gas when the concentration of the combustible gas in the battery box body is too high. According to the utility model, the fire extinguishing system and emergency shutdown measures can be automatically triggered when abnormity is detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of marine power supply, specifically, relate to a marine container type mobile power supply fire alarm control and monitoring system. BACKGROUND

[0002] With the development of green energy technology, electric ships are widely used in the field of shipping. As the power source of pure electric ships, the safety of the battery of the container mobile power supply system (CMPS) is crucial. Real-time monitoring and automatic control of the battery compartment of the marine container mobile power supply are needed to improve the efficiency and safety of the battery system.

[0003] Traditional power management systems use manual control and simple monitoring methods, which cannot meet the complex battery management needs of ships. In order to improve the automation level of the system, automatic control technology is gradually applied to the field of power management, which has the advantages of strong flexibility, fast response speed, and high system safety. UTILITY MODEL CONTENT

[0004] In order to solve the above technical problems, the utility model provides a marine container type mobile power supply fire alarm control and monitoring system, which comprises: a central control unit based on PLC; an alarm unit and a fire extinguishing unit connected with the central control unit; a box door monitoring unit connected with the central control unit and used for monitoring the opening and closing state of a plurality of battery box doors; a fire alarm unit connected with the central control unit and used for real-time detection of the fire condition inside the battery box; a fire extinguishing state monitoring unit connected with the central control unit and used for checking whether the fire extinguishing device is activated after the fire is confirmed and detecting the release state of the fire extinguishing agent; a fire pre-alarm unit connected with the central control unit and used for sending a fire pre-alarm signal; and an emergency fan unit connected with the central control unit and used for starting the emergency fan to blow down the combustible gas concentration when the combustible gas concentration in the battery box is too high.

[0005] According to the utility model, the system realizes efficient automatic management through PLC centralized control, reduces human intervention, and can automatically trigger the fire extinguishing system and emergency shutdown measures when an abnormality is detected. The high reliability and anti-interference of PLC ensure the stable operation of the system in complex environments, optimize the charge and discharge management of the battery, improve the energy utilization rate, and reduce the operation and maintenance cost. Therefore, the system has high practicability and safety in ship power management and has wide application prospect.

[0006] Preferably, the box door monitoring unit comprises a door state sensor.

[0007] Preferably, the door state sensor comprises a mechanical limit sensor arranged at the top of each battery box door.

[0008] Preferably, the box door monitoring unit, fire alarm unit, fire pre-alarm unit and fire state monitoring unit are connected to the central control unit through a wiring module. The system adopts modular design, has good expansibility, and provides the basis for fault troubleshooting and system optimization through real-time data acquisition and historical record function.

[0009] Preferably, the wiring module includes sixteen independent input channels, each two channels receiving an independent signal, and all signals being connected through a wiring terminal.

[0010] Preferably, it further comprises an analog module with eight analog input channels, each channel receiving a voltage or current signal, for real-time monitoring of the combustible gas concentration signal in the battery box.

[0011] Preferably, it further comprises a fire extinguishing agent leakage monitoring unit connected to the central control unit to send a fire extinguishing agent leakage alarm signal from the fire-fighting box to the central control unit.

[0012] Preferably, it further comprises a fire unit fault detection unit connected to the central control unit to send a fire unit comprehensive fault signal from the fire-fighting box to the central control unit.

[0013] Preferably, it further comprises a water immersion detection unit connected to the central control unit to send a water immersion alarm signal to the central control unit.

[0014] Preferably, the water immersion detection unit includes a water immersion sensor installed at the bottom of the battery box. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a connection diagram of main devices of the marine container type mobile power fire alarm control and monitoring system according to an embodiment of the present application.

[0016] Figure 2 is a schematic principle diagram of the marine container type mobile power fire alarm control and monitoring system according to an embodiment of the present application. DETAILED DESCRIPTION

[0017] The present application is further illustrated below in conjunction with the accompanying drawings and the following embodiments, it should be understood that the accompanying drawings and the following embodiments are only used to illustrate the present application, but not to limit the present application. Some non-essential improvements and adjustments made by those skilled in the art based on the above content of the present application are within the protection scope of the present application. The following example specific process parameters are only one example in the appropriate range, i.e. those skilled in the art can select within the appropriate range through the description herein, but not limited to the specific values of the following examples.

[0018] The utility model provides a kind of marine container type mobile power fire alarm control and monitoring system, to improve the electric power management efficiency and safety of pure electric ship.The so-called container type mobile power refers to the battery installation platform of the battery power supply system using the box body of container.Ordinary container type mobile power can generally include battery cabin (i.e. battery box), busbar cabinet, fire-fighting device, monitoring device, ventilation device and the like.

[0019] The marine container type mobile power fire alarm control and monitoring system of the utility model realizes the automatic control and monitoring of fire-fighting unit by programmable logic controller (PLC).Specifically, Figure 1 It is the connection schematic diagram of main devices of the marine container type mobile power fire alarm control and monitoring system according to an embodiment of the utility model.As shown in Figure 1 The marine container type mobile power fire alarm control and monitoring system of the utility model includes busbar cabinet, which is mainly used for collecting and distributing current of multiple battery modules or battery packs in battery cabin to each load, to provide power required for navigation and daily life of ship. As also Figure 1 As shown, the marine container type mobile power fire alarm control and monitoring system of the embodiment further includes fire-fighting box, emergency fan, fan damper and water immersion sensor connected with busbar cabinet.Fire-fighting box is mainly connected with temperature sensor, smoke sensor and fire extinguishing device, and temperature sensor and smoke sensor are usually arranged at the top of battery box.And busbar cabinet is also connected with display device and buzzer for alarm.

[0020] Figure 2 It is the schematic principle diagram of the marine container type mobile power fire alarm control and monitoring system according to an embodiment of the utility model.As shown in Figure 2 The marine container type mobile power fire alarm control and monitoring system of the embodiment includes central control unit based on PLC and alarm unit and fire-fighting unit connected therewith. In the embodiment, alarm unit can be buzzer as shown. Fire-fighting unit mainly includes fire extinguishing device and the like. Figure 1

[0021] As also Figure 2 ​As shown, the ship container type mobile power supply fire alarm control and monitoring system of the embodiment further comprises a box door monitoring unit connected to the central control unit, which is used to monitor the opening and closing state of the battery box doors (#1 battery box door, #2 battery box door, etc.), so as to ensure that the battery box is in a safe closed state during operation. Any abnormal opening and closing state of the battery box door will be immediately fed back to the central control unit. Further, when all the battery compartment doors (i.e. battery box doors) are closed, the fire extinguishing unit is in an automatic release state, otherwise it is in a manual release state. The opening and closing state of each battery box door is monitored separately. If any abnormal opening and closing state is detected during operation, the central control unit will immediately trigger an alarm through the connected alarm unit, and the fire extinguishing unit connected to the central control unit cannot be automatically started, i.e. the fire extinguishing unit cannot be automatically allowed. Specifically, the box door monitoring unit comprises a door state sensor, which in this embodiment can be a mechanical limit sensor arranged on the top of each battery box door.

[0022] As shown, the ship container type mobile power supply fire alarm control and monitoring system of the embodiment further comprises a box door monitoring unit connected to the central control unit, which is used to monitor the opening and closing state of the battery box doors (#1 battery box door, #2 battery box door, etc.), so as to ensure that the battery box is in a safe closed state during operation. Any abnormal opening and closing state of the battery box door will be immediately fed back to the central control unit. Further, when all the battery compartment doors (i.e. battery box doors) are closed, the fire extinguishing unit is in an automatic release state, otherwise it is in a manual release state. The opening and closing state of each battery box door is monitored separately. If any abnormal opening and closing state is detected during operation, the central control unit will immediately trigger an alarm through the connected alarm unit, and the fire extinguishing unit connected to the central control unit cannot be automatically started, i.e. the fire extinguishing unit cannot be automatically allowed. Specifically, the box door monitoring unit comprises a door state sensor, which in this embodiment can be a mechanical limit sensor arranged on the top of each battery box door. Figure 2

[0023] As shown, the ship container type mobile power supply fire alarm control and monitoring system of the embodiment further comprises a box door monitoring unit connected to the central control unit, which is used to monitor the opening and closing state of the battery box doors (#1 battery box door, #2 battery box door, etc.), so as to ensure that the battery box is in a safe closed state during operation. Any abnormal opening and closing state of the battery box door will be immediately fed back to the central control unit. Further, when all the battery compartment doors (i.e. battery box doors) are closed, the fire extinguishing unit is in an automatic release state, otherwise it is in a manual release state. The opening and closing state of each battery box door is monitored separately. If any abnormal opening and closing state is detected during operation, the central control unit will immediately trigger an alarm through the connected alarm unit, and the fire extinguishing unit connected to the central control unit cannot be automatically started, i.e. the fire extinguishing unit cannot be automatically allowed. Specifically, the box door monitoring unit comprises a door state sensor, which in this embodiment can be a mechanical limit sensor arranged on the top of each battery box door. Figure 2

[0024] As shown, the ship container type mobile power supply fire alarm control and monitoring system of the embodiment further comprises a box door monitoring unit connected to the central control unit, which is used to monitor the opening and closing state of the battery box doors (#1 battery box door, #2 battery box door, etc.), so as to ensure that the battery box is in a safe closed state during operation. Any abnormal opening and closing state of the battery box door will be immediately fed back to the central control unit. Further, when all the battery compartment doors (i.e. battery box doors) are closed, the fire extinguishing unit is in an automatic release state, otherwise it is in a manual release state. The opening and closing state of each battery box door is monitored separately. If any abnormal opening and closing state is detected during operation, the central control unit will immediately trigger an alarm through the connected alarm unit, and the fire extinguishing unit connected to the central control unit cannot be automatically started, i.e. the fire extinguishing unit cannot be automatically allowed. Specifically, the box door monitoring unit comprises a door state sensor, which in this embodiment can be a mechanical limit sensor arranged on the top of each battery box door. Figure 2

[0025] As shown, the ship container type mobile power supply fire alarm control and monitoring system of the embodiment further comprises a box door monitoring unit connected to the central control unit, which is used to monitor the opening and closing state of the battery box doors (#1 battery box door, #2 battery box door, etc.), so as to ensure that the battery box is in a safe closed state during operation. Any abnormal opening and closing state of the battery box door will be immediately fed back to the central control unit. Further, when all the battery compartment doors (i.e. battery box doors) are closed, the fire extinguishing unit is in an automatic release state, otherwise it is in a manual release state. The opening and closing state of each battery box door is monitored separately. If any abnormal opening and closing state is detected during operation, the central control unit will immediately trigger an alarm through the connected alarm unit, and the fire extinguishing unit connected to the central control unit cannot be automatically started, i.e. the fire extinguishing unit cannot be automatically allowed. Specifically, the box door monitoring unit comprises a door state sensor, which in this embodiment can be a mechanical limit sensor arranged on the top of each battery box door. Figure 2 ​​​As shown, the ship container type mobile power supply fire alarm control and monitoring system of the embodiment further comprises an emergency fan unit connected to the central control unit. When the flammable gas concentration in the battery box is too high, the emergency fan is started to blow down the flammable gas concentration. Specifically, the emergency fan unit is used to monitor the state of the emergency fan and the state of the fan damper, including the state monitoring of the emergency fan and the opening and closing state monitoring of the fan damper. By monitoring the state of the emergency fan, the system can respond in time in an emergency and perform the opening and closing operation of the fan damper to ensure that when thermal runaway occurs, the flammable gas can be quickly discharged outside the battery box. In this embodiment, the fan damper and the emergency fan can be integrated into one device. For example, after the fan damper is powered for 30 seconds, the emergency fan will be automatically opened; when the fan damper power is turned off, the emergency fan will be turned off first, and the fan damper will be turned off after 30 seconds.

[0026] Further, in a specific embodiment of the present application, an analog module with 8 analog input channels can be designed, each channel can receive voltage or current signals for real-time monitoring of the flammable gas concentration signal in the battery box. Specifically, the analog module is used to collect the analog signal from the flammable gas concentration sensor arranged in the battery box. When the flammable gas concentration is detected to exceed the set value, the fan damper is immediately opened, the emergency fan is opened after about 30 seconds, the flammable gas is blown away, and the flammable gas concentration in the box is reduced. When the flammable gas concentration is lower than the set value, the emergency fan will stop working after a delay of 30 seconds in order to more thoroughly reduce the flammable gas concentration value in the box.

[0027] In a specific embodiment of the present application, in the ship container type mobile power supply fire alarm control and monitoring system of the embodiment, the connection of the PLC with the above-mentioned box door monitoring unit, fire alarm unit, fire pre-alarm unit and fire state monitoring unit can be realized by designing a wiring module, that is, the PLC is connected to a plurality of external sensors and relays through the wiring module for monitoring the key information such as the opening and closing state of the box door, fire detection, fire pre-alarm and fire extinguishing agent release state, and sending these information to the central control unit. Specifically, the wiring module can be a 16-channel digital input module (for example, SM1221 16DI, model 6ES7-221-1BH32-0XB0) for monitoring and managing the states and key safety information of the battery box as described above. When the system is started, the opening and closing state of the battery box door, the fire alarm signal, the fire pre-alarm and the fire extinguishing agent release state are connected to the central control unit through the signal line to monitor the environment inside and outside the battery box in real time.

[0028] Further, the above-mentioned wiring module can include 16 independent input channels, each of which receives an independent signal for monitoring the change of each key state in the system. Through these input channels, the system can obtain the state information of the battery box and the fire-fighting unit in real time. All signals are connected through the wiring terminal, which is convenient for installation and maintenance.

[0029] Specifically, for battery box door state monitoring, in the embodiment, the first to eighth channels of the above-mentioned wiring module are connected to the top mechanical limit sensors of the doors of the four battery boxes, respectively, for detecting the opening and closing states of the #1, #2, #3 and #4 battery box doors. These sensors ensure that the opening and closing states of the battery box doors are transmitted at any time to prevent the internal environment from contacting the outside, which may cause failure or danger. If the battery box door is detected to be opened, the system will trigger an alarm or take other protective measures. Further, the door state sensor of each battery box is used to monitor whether the battery box is in a closed state, ensuring that the box remains sealed during operation. If the box door is detected to be opened, the central control unit receives the signal from the mechanical limit sensor at the top of the battery box door via the above-mentioned wiring module, and then controls whether the alarm unit issues a door opening alarm.

[0030] For fire pre-alarm, the ninth and tenth channels of the above-mentioned wiring module are used to receive the fire pre-alarm signal, which is sent by the temperature sensor or smoke sensor installed at the top of the battery box to the fire-fighting box, and then the fire-fighting box sends the fire pre-alarm to the central control unit.

[0031] For fire alarm, the eleventh and twelfth channels of the above-mentioned wiring module are used to receive the fire-fighting start signal (i.e. fire alarm signal) to monitor whether there is a fire hazard around the battery or equipment and whether there is a fire in the environment. The signal is sent by the temperature sensor and smoke sensor installed at the top of the battery box to the fire-fighting box, and then the fire-fighting box sends the fire-fighting start signal to the central control unit. For fire extinguishing agent release state monitoring, the thirteenth and fourteenth channels of the above-mentioned wiring module are used to monitor the release state of the fire extinguishing agent to ensure that the fire extinguishing device is automatically started and releases the fire extinguishing agent after the fire is confirmed. The monitoring of this part can immediately feedback the fire extinguishing agent release state of the fire-fighting unit when a fire occurs, ensuring that the fire extinguishing device works according to the predetermined program. Once the fire extinguishing agent release signal from the fire-fighting box is detected, the central control unit will record the state. That is, the fire-fighting unit provides real-time safety monitoring, and once triggered, the PLC will immediately alarm and take emergency measures to start the fire extinguishing system and notify the operator.

[0032] In addition, for the automatic permission of the fire extinguishing unit, the fifteenth and sixteenth channels of the above-mentioned wiring module are used to transmit the automatic permission signal of the fire extinguishing unit to the fire extinguishing box when the signal of the mechanical limiting sensor of the door of the four battery boxes is not triggered, and the fire extinguishing unit is in an automatic release state.

[0033] During normal operation, the above-mentioned wiring module receives signals from the battery box door status sensor, fire alarm, and fire extinguishing agent release status, and the system monitors these statuses in real time and transmits the signals to the central control unit. When the central control unit detects a fire alarm signal from the battery box, the system will immediately issue an alarm and perform corresponding emergency measures, start the fire extinguishing unit or trigger the fire extinguishing agent release. That is, the above-mentioned wiring module is connected to all key monitoring signals. When the system is started, each channel begins to monitor the status of the battery box and the fire signal in real time. For example, in the state that the battery box door is closed, the central control unit detects the triggering of the fire alarm signal channel and immediately switches to the fire extinguishing mode: closes the battery box door, starts the fire extinguishing device, and the buzzer issues an alarm, so that personnel can respond quickly.

[0034] In addition, when the inverter state in the power system is abnormal, the central control unit will switch to the uninterruptible power supply (UPS) power supply mode according to the received signal indication, ensuring that important load devices are not affected. At the same time, the system automatically records and reports fault information, facilitating the operator to maintain.

[0035] In addition, in order to improve the safety of the battery box, the signals of the fire extinguishing box are not only given to the central control unit through software control, but also through circuit design to hard-wire control the emergency stop of the fan and control the two DC isolators connected with the circuit breaker to make the system emergency stop, and the emergency stop feedback signal and the loss of power of the BMS module are also given to the ship's bridge through hard-wire mode.

[0036] Fire extinguishing box triggers emergency stop signal: When the fire pre-alarm signal of the fire extinguishing box is triggered, the power supply air switch of the emergency fan and the fan brake will be immediately cut off, stopping the work of the emergency fan and the fan brake. When the fire extinguishing start signal and the fire extinguishing agent release status signal of the fire extinguishing box are triggered, the two DC isolators will be tripped.

[0037] Converging cabinet door button control: When the fan cut-off button is pressed, the power supply air switch of the emergency fan and the fan brake will be immediately cut off, stopping the work of the emergency fan and the fan brake. When the system emergency stop button is pressed, the two DC isolators will be tripped.

[0038] In addition, remote control can also be performed: the two DC isolators can be tripped by remote control through the buttons on the container door and the buttons in the bridge. The power supply air switch of the emergency fan and the fan brake can be cut off by remote control through the buttons on the container door and the buttons in the bridge, stopping the work of the emergency fan and the brake.

[0039] In addition, the central control unit can also control the remote emergency stop through the PLC, and the two DC isolators can be tripped.

[0040] With reference to the above Figure 2 The fire alarm control and monitoring system for the marine container-type mobile power supply of the embodiment further includes a fire extinguishing agent leakage monitoring unit connected to the central control unit, which receives the fire extinguishing agent leakage alarm signal of the fire-fighting box. When there is a leakage of the fire extinguishing agent, the system can timely alarm and notify the maintenance personnel to carry out maintenance. The system further includes a fire-fighting unit fault detection unit connected to the central control unit, which receives the comprehensive fault signal of the fire-fighting unit of the fire-fighting box. When the fire-fighting unit is abnormal, the system can timely transmit the signal to the central control unit and issue an alarm state. In addition, the fire alarm control and monitoring system for the marine container-type mobile power supply of the embodiment further includes a water immersion detection unit connected to the central control unit, which includes a water immersion sensor installed at the bottom of the battery box. The alarm signal of the water immersion sensor is transmitted to the central control unit. In a specific embodiment of the embodiment, the fire extinguishing agent leakage monitoring unit, the fire-fighting unit fault detection unit and the water immersion detection unit can also be connected to the central control unit through a collection module with 16 digital input channels. The collection module can also have a standby signal interface.

[0041] In addition, the fire alarm control and monitoring system for the marine container-type mobile power supply of the embodiment can also realize single high-temperature alarm. When the lithium ion battery temperature alarm from the battery management system is detected, the signal is transmitted to the fire-fighting unit, and the fire-fighting unit can timely respond.

[0042] The fire alarm control and monitoring system for the marine container-type mobile power supply based on PLC has many advantages. First, through the centralized control of PLC, the system realizes efficient automatic management and reduces human intervention. When an abnormality is detected, the system can automatically trigger the fire-fighting system and emergency stop measures. In addition, the system supports remote monitoring and operation, and the operator can perform real-time fault handling and remote maintenance, greatly improving the flexibility of the system. The system adopts modular design and has good expandability. Through real-time data acquisition and historical record function, the system provides a basis for fault troubleshooting and system optimization. The high reliability and anti-interference of PLC ensure the stable operation of the system in complex environments, optimize the charge and discharge management of the battery, improve the energy utilization rate, and reduce the operation and maintenance cost. Therefore, the system has high practicability and safety in ship power management, and has wide application prospect.

[0043] Without departing from the purpose of the basic characteristics of the present application, the present application can be embodied in various forms, therefore the embodiment of the present application is used for description and not limitation, since the scope of the present application is limited by the claims and not limited by the description, and all changes falling within the scope defined by the claims, or within the equivalent scope defined by the claims, should be understood as included in the claims.

Claims

1. A marine containerized mobile power supply fire alarm control and monitoring system, characterized in that, The application relates to a central control unit based on PLC. An alarm unit and a fire extinguishing unit connected with the central control unit; A battery box door monitoring unit connected with the central control unit and used for monitoring the opening and closing states of a plurality of battery box doors; A fire alarm unit connected with the central control unit and used for detecting the fire condition inside the battery box in real time; A fire extinguishing state monitoring unit connected with the central control unit and used for checking whether the fire extinguishing device is operated and detecting the release state of the fire extinguishing agent after the fire is confirmed; A fire pre-alarm unit connected with the central control unit and used for sending a fire pre-alarm signal; An emergency fan unit connected with the central control unit and used for starting the emergency fan to blow the combustible gas to a low concentration when the combustible gas concentration in the battery box is too high. The battery box door monitoring unit comprises a door state sensor.

2. The system of claim 1, wherein, The door state sensor comprises a mechanical limit sensor arranged on the top of each battery box door.

3. The system of claim 2, wherein, The battery box door monitoring unit, the fire alarm unit, the fire pre-alarm unit and the fire extinguishing state monitoring unit are connected with the central control unit through a wiring module.

4. The system of claim 1, wherein, The wiring module comprises sixteen independent input channels, each two channels receive an independent signal, and all the signals are connected through wiring terminals.

5. The system of claim 4, wherein, An analog module with eight analog input channels is further included, each channel receives a voltage or current signal and is used for monitoring the combustible gas concentration signal in the battery box in real time.

6. The system of claim 1, wherein, A fire extinguishing agent leakage monitoring unit connected with the central control unit and used for sending a fire extinguishing agent leakage alarm signal from the fire extinguishing box to the central control unit is further included.

7. The system of claim 1, wherein, A fire extinguishing unit fault detection unit connected with the central control unit and used for sending a fire extinguishing unit comprehensive fault signal from the fire extinguishing box to the central control unit is further included.

8. The system of claim 1, wherein, A water immersion detection unit connected with the central control unit and used for sending a water immersion alarm signal to the central control unit is further included.

9. The system of claim 1, wherein, The water immersion detection unit comprises a water immersion sensor arranged on the bottom of the battery box.

10. The system of claim 9, wherein, ​

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