Installation of automatic fire-fighting water cannon fire extinguishing device

With the development of economy and technology, the fire extinguishing system in the buildings with large space mostly adopts the automatic fire-fighting water cannon device linked with the fire detector for fixed-point fire fighting. The system has unparalleled advantages in traditional fire protection sprinkling in terms of construction period, labor input, safety protection, and actual fire extinguishing effects. The following is a brief summary of its installation method.

Working principle: It is a fully automatic fire extinguishing device that integrates single chip microcomputer technology, infrared and ultraviolet sensor technology, and mechanical transmission technology. The on-site infrared image is collected through the front-end detection system, and the central controller uses image processing to detect and locate the fire that occurred in the control area, open the corresponding linkage equipment and control the water cannon to enter the sprinkler operation. Form a complete automatic detection-automatic positioning-automatic sprinkler system.

The installation of water monitors should be accurately and reasonably arranged according to the objects and scope of fire protection, as well as the headroom, plane size, configuration and distribution of the buildings. Arrangement spacing should consider that the range of a water cannon can be achieved anywhere in the room.

1. Main points of control system installation

The main equipment of the control system consists of a power supply control box, a solenoid valve control power supply, and an information processing host.

1. Control box

The control box is a special power controller used with it. Its connecting line input AC220V, output two sets of DC12V / 2A and four sets of passive contacts. The connector on the power controller is connected to the external power harness, and the other end is connected to the connector of the water monitor, and the lock cap should be tightened.

The installation method of the power control box of the control system is divided into two types: concealed and wall-mounted. The installation must be vertical, and the installation height is 1.5m from the bottom to the ground.

2. Solenoid valve

The solenoid valve is powered by AC220V power supply (leakage protection switch is not suitable), its connection line and a group of passive nodes of the power controller are connected to the power supply for use, and are waterproof. The metal shell and metal bracket of the power controller should be grounded, and the ground wire should be connected to the electrical protection grounding line.

3. Information processor

Information processor is the core equipment for information processing and control of large space fire safety monitoring system and automatic fire monitor system. It integrates fire alarm confirmation, linkage control, image monitoring, and automatic fire-fighting water cannon device positioning and extinguishing, and can be networked with other systems. Generally installed in the fire control center. The specific standards and requirements for installation are in accordance with the design requirements. When installing, pay attention to: the equipment foundation should be firmly fixed, and waterproof treatment should be done, the power cord and control cable should be classified, the connection should be firm and clear, and it should not be misconnected or missed.

2. Wiring inspection and installation

After the control line and power line are installed, check the correctness of the connection of each line to ensure the smoothness of the control line and power supply. Main points of automatic fire water cannon pipe network installation

1. Pipe network system

Compared with other automatic fire sprinkler systems, its pipe network system is basically the same in principle. The system consists of pipe network, valves and water pumps.

2. Installation of ball valve

The ball valve is made of all-copper valve, which is installed at the end of the water distribution pipe. The sealing packing of the thread connection should be evenly attached to the thread part of the water distribution pipe. , The spanner part of the ball valve should be installed above the pipe network to facilitate later operation.

3. Installation of solenoid valve

The solenoid valve is made of all-copper valve, which is installed horizontally close to the water cannon. Behind the ball valve, the port diameter is DN50. 50mm ～ 100mm hot-dip galvanized steel pipe thread connection is used in the middle, and the water flow direction must be consistent with the direction of the valve body during installation.

4. Installation of water pump

The foundation concrete strength, coordinates, elevation, size and bolt hole location before the pump installation must meet the design requirements.