Ankerui Electric Co., Ltd.

Xu Shuang

The fire door monitoring system is one of the subsystems of the fire automatic alarm system set in the building specified in the “Code for the Design of Automatic Fire Alarm System” (GB 50116-2013). This article is based on relevant specifications and atlases, and it is installed from the perspective of design and construction. The angle introduces the fire door monitoring system. The correct design and installation of the system will play an important role in ensuring the evacuation of people and ensuring the safety of the property.

Key words fire automatic alarm system fire door monitoring system design and installation

0 Preface

Building fire doors are one of the main objects that keep building fire separation completely intact. They have a certain fire resistance and fire resistance and can control the fire within a predetermined range [1]. The fire doors on the evacuation passages are the safe evacuation of personnel and the firefighters carry out fires to save the passages. In the event of fire or other emergency, the fire doors can be quickly opened; however, the smoke and fire of the fire may also pass through fires that have not been completely closed. The door slammed into an evacuation channel or other fire partition, resulting in personnel being unable to evacuate or spreading the fire to other fire zones. However, after more buildings are put into use, the fire doors are not opened or closed completely in the way they are designed. In the event of a fire, the fire doors cannot effectively block the smoke and fire. In order to ensure that the fire doors will play their due role, the "Fire Automatic Alarm System Design Specification" (GB 50116-2013) stipulates that a fire door monitoring system must be installed in the building. The correct design and installation of the system can ensure fire protection. The fire blocked the fire and ensured the safe evacuation of personnel. This article briefly introduces the design and installation of the fire door monitoring system.

1 Fire door monitoring system

The fire door monitoring system is a subsystem of the fire automatic alarm system. Its main function is to monitor the opening and closing of the fire doors on the evacuation channel and the fault conditions. The system is mainly composed of a fire door monitor, a fire door monitoring extension, a fire door monitoring module and a monitoring linkage device. The fire door monitoring linkage device includes an electric door closer, a manual button, an electromagnetic release and a door magnetic switch, etc. [2] .
The fire door monitor can display the opening, closing and failure status of the fire door, control the opening and closing state of the fire door when a fire occurs, and transmit each fire door in the information to the fire automatic alarm system host; the monitoring extension can expand the monitoring system The scope and scale of work; the monitoring module receives the signal from the monitor, controls the on-site monitoring and linkage device, and collects the status information of the on-site monitoring and linkage equipment and transmits it to the monitor; the electric door closer can change or maintain the opening and closing of the fire door. Status, and can feedback its status information to the fire door monitor; the electromagnetic release device keeps the normally open fire door open at all times, closes the fire door after receiving the signal, and feeds back its own status information to the monitor; The switch is used to monitor the opening and closing state of the fire door and feed back its status information to the fire door monitor [2].
The main composition of the fire door monitoring system is shown in Figure 1.

Fire alarm signal of automatic fire alarm system, and control the electric door closer and releaser; record the status information of the fire door connected with it. The main power supply of the monitor and monitoring extension uses 220V, 50Hz AC power, and the power supply of the electric door closer, releaser and door magnetic switch adopts DC 24V or 12V; and it is equipped with standby power supply, and the standby power adopts sealed and maintenance-free rechargeable battery. The battery capacity is normal and reliable 3h [3] under the condition that the monitor is powered on and the fire door is opened and the required power is turned off.

The fire door monitoring extension is an extension of the fire door monitor, which can extend the power supply and communication distance of the fire door monitor, make the system power supply stable, and the communication is reliable. At the same time, it can expand the number of fire door monitoring modules to form a more complete and stable The monitoring network is smaller and easier to install than the monitor.
In the event of a fire, the opening and closing of the fire doors plays an important role in ensuring the timely evacuation of personnel and obstructing the fire. Fire door monitors and monitoring modules should cooperate with other fire protection systems in case of fire. Therefore, fire door monitoring The device is set in the fire control room. If the building is not provided with a fire control room, the monitor should be set at the place where the man is on duty; the monitoring station can be set at the electric shaft or the floor distribution room; the fire door monitor setting should meet the fire alarm Controller installation requirements [4].

2 Fire Door Monitors and Monitoring Extensions

The fire door monitor is the core of the fire door monitoring system. When the fire door system is in operation, the fire alarm controller and the fire linkage controller signal are transmitted to the fire door monitor. The fire door monitor monitors the fire door monitor module and the monitoring linkage device; at the same time, the status signal of the fire monitor module is transmitted to The fire door monitor transmits the signal from the fire door monitor to the fire linkage controller and the fire control room graphic display device.
The fire door monitor mainly has the following functions: display and control the open and closed state of the electric door closer and releaser connected thereto;

3 fire door monitoring module and monitoring linkage device

The fire door monitoring module is divided into a normally closed monitoring module and a normally open monitoring module. The normally closed monitoring module has a closed state as a normal state, and the normally open monitoring module has a normally open state as a normal state. When the state changes, the fire door monitor needs Make judgments and reactions. For single doors and double doors, the number of linkage devices they connect is different. From an economic point of view, it can be divided into single-open type and double-open type.

The building fire protection code has the following requirements for fire doors: the opening and closing of fire doors on the evacuation channel and the feedback of fault status signals to the fire door monitor ensure that the use of all fire doors is effectively controlled; fire doors have Closed function can ensure that the fire door is completely closed after the evacuation of the personnel. This function is realized by the door closer; the double-fire door is closed in order, which can prevent the fire door from sealing tightly because of the wrong closing sequence. This function is ensured by using the sequencer. Normally open fire doors should be able to close automatically in the event of a fire, and feedback signals [1], through the fire door monitoring system.

According to the requirements of the above specifications, the fire door monitoring linkage device is mainly installed in the following four forms at the fire door [5].

1) Single or double open normally closed fire doors. The fire doors are normally closed and the magnetic switch is kept closed. When the fire door is opened, the door magnetic switch sends a signal to the fire door monitor through the monitoring module to indicate that the fire door is in the open state. When the door leaf cannot be completely closed, the door magnetic switch feeds back the fault state to the fire door monitor through the monitoring module. Door magnetic switch shall not break the tightness of the door leaf and door frame. Its installation and arrangement are shown in Figure 2~Figure 4.

2) Single or double open normally open fire doors, electromagnetic release device, mechanical door closer and door magnetic switch, electromagnetic release device and door magnetic switch are connected with the monitoring module respectively, the fire door is in the normally open state, and the fire door monitoring system is involved. In linkage, the “AND” logic alarm signal of two independent fire detectors in the fire district where it is located, or the “AND” logic alarm signal of a fire detector and a manual fire alarm button is used as the trigger signal of fire linkage linkage. After the fire alarm controller or the fire linkage linkage controller confirms the signal, the fire door monitor activates the electromagnetic releaser through the monitoring module, releases the chain, the door leaf closes under the action of the mechanical door closer, and after the magnetic switch is closed, it passes the monitoring. The module feeds back the fire door closing signal to the fire door monitor. When the door leaf cannot be fully closed, the door magnetic switch feeds back the fault status to the fire protection monitor through the monitoring module, and the door magnetic switch must not break the seal between the door leaf and the door frame. Its installation and layout are shown in Figure 5 to Figure 7.

3) single or double open normally open fire doors, which set the electric door closers, fire doors in a normally open state, after a fire, the fire door monitor through the monitoring module to make the electric door closers move, the door leaf in the electric door closers The shutdown is completed under the drive, and the shutdown signal is fed back to the fire door monitor through the monitoring module. The fire door trigger signal is the same as the normally open door trigger signal with the electromagnetic release. The installation height and position requirements of the manual control button are the same as the manual buttons for setting the normally closed fire door of the electric door closer. When the door leaf cannot be completely closed, the door magnetic switch feeds back the fault state to the fire door monitor through the monitoring module. The door magnetic switch must not break the seal between the door leaf and the door frame, as shown in Fig. 8~Fig.

4 AFRD Fire Door Monitoring System Introduction

The AFRD fire door monitoring system centrally controls the working status of its terminal equipments, ie, electric door closers and electromagnetic releasers. It displays the opening, closing and failure status of the fire door of the monitoring evacuation passage, and displays real-time fault signals such as open circuit and short circuit of the terminal equipment. The system adopts the fire two bus to connect the monitoring modules with communication function to each other. When the terminal equipment is short-circuited, open circuited or other faults, the fire door monitor can send an alarm signal, can indicate the alarm location and save the alarm information, so as to ensure the maximum The reliability of electrical safety.
The AFRD fire door monitoring system adopts centralized power supply. The on-site monitoring module is powered by a DC24V safe voltage to effectively ensure the stability and safety of the system. At present, it is widely used in airports, rail transit, tunnels, passenger hubs, hospitals, schools, stadiums, exhibition halls, high-end commercial real estate and other places.

4.1AFRD100/B Fire Door Monitor

4.1.1 Product Overview

The fire door monitor is the host of the fire door monitoring system. The monitor is linked with the host of the fire automatic alarm system. When the fire occurs, the control instructions can be quickly issued according to the spread of the fire and the direction of smoke, and the instructions can be issued to each terminal via the bus to control the opening and closing state of the fire door. Fire source.

4.1.2 Product Parameters

4.1.3 Monitor Panel Component Arrangement and Function Description

4.2 AFRD-QYFJ Regional Extension 4.2.1 Product Overview The regional extension is a local control device for the fire door monitoring system. It can effectively monitor the fire door devices in the local partition, and its own status information can be uploaded to the monitoring host through the bus, extending The communication distance of the monitor expands the number of monitoring terminals.

4.2.2 Product Parameters

4.2.3 Panel Component Arrangement and Function Description

4.3 AFRD-DY centralized power supply

4.3.1 Product Overview

The centralized power supply is a backup centralized emergency power supply device installed in the building. When the monitoring distance is too long or in the emergency state, emergency power supply for the fire door monitoring module can be provided to ensure the normal operation of the fire door monitoring system.

4.3.2 Product Parameters

4.3.3 Panel Component Arrangement and Function Description

4.4 List of other components of fire door monitoring system

5 Concluding remarks

The correct design, construction and installation of the fire door monitoring system is the prerequisite guarantee for its correct use. The design and construction personnel need to understand the new system in this automatic fire alarm system as soon as possible. With the widespread use of the system in the building, It will surely play its due role in protecting the safety of people and property.

references:

[1] Ministry of Construction of the People's Republic of China. Code for Design of Building Fire Protection (GB 50016-2006) [S]. Beijing: China Plan Press, 2006.
[2] Ding Hongjun. Design of Automatic Fire Alarm System [M]. Southwest Jiaotong University Press, 2014.
[3] General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China. Fire Door Monitor (GB 29364-2012) [S]. Beijing: China Plan Publication Center, 2013.
[4] Ministry of Construction of the People's Republic of China. Design Specification for Automatic Fire Alarm System (GB50116-2013) [S]. Beijing: China Plan Press, 2014.
[5] China Building Standard Design and Research Institute. "Fire automatic alarm system design specification" graphic [S]. Beijing: China Planning Press, 2014.
[6] Li Peiyan et al. Discussion on design and installation of fire door monitoring system. Intelligent building electrical technology, 2015.
[7] Arcelor fire door monitoring system selection manual. 2016.7

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