【 Weak current College 】 heptafluoropropane no pipeline automatic fire extinguishing system in the taipu River pump station---Power By 【 China power house network 】

Introduction: heptafluoropropane no network install automatic fire extinguishing system consists of the fire detectors, automatic alarm control, fire control, fixed fire-fighting equipment, fire extinguishing agent, transmission soft pipe and nozzle.

Keywords: heptafluoropropane, no network, workflow, use and operation

1 Introduction
Taipu River pump station central control room, computer room layout a heptafluoropropane no pipeline automatic fire extinguishing equipment. Heptafluoropropane no pipeline automatic fire extinguishing system is to "clean gas" heptafluoropropane as the extinguishing agent, heptafluoropropane is colored tasteless gas, with clean, non-conductive, degree of low, fire extinguishing with high efficiency, no pollution protection object characteristics, especially on atmospheric ozone layer non-destructive, compliance with environmental protection requirements. The appliance is a network, light, movable, automatic fire extinguishing of fire fighting equipment, with installation flexibility, appearance, extinguishing not network loss, fire extinguishing efficiency, speed, no pollution. When the fire broke out, you can directly reserve automatic sprinkler fire extinguishing agent, easy and fast. The appliance does not set storage bottles, gas cylinder and the entire system are set in the reserve.

Heptafluoropropane no network install automatic fire extinguishing system consists of the fire detectors, automatic alarm control, fire control, fixed fire-fighting equipment, fire extinguishing agent, transmission soft pipe and nozzle.

2 systems work flow chart



3 fire extinguishing systems components

ZQW2-120-heptafluoropropane no pipeline automatic fire extinguishing system is independent of all drown the fire extinguishing system that consists of a set or sets of non-network devices correspond to protect an area that can provide time protection area Jet must manoeuvrability concentration and evenly fill the protection area. Taipu River pump station central control room set two ZQW2-120-heptafluoropropane no pipeline automatic fire extinguishing system, calculation of room setting a ZQW2-120-heptafluoropropane no pipeline automatic fire extinguishing system is shown in Figure 1

3.1 system technical data

Filling pressure 2.5Mpa

Fire extinguishing agent injection on time ≤ 10s

System power supply AC220V, power DC24V

System working environment temperature-10 ~ 50 ℃

System startup mode automatic, manual, mechanical emergency manual

Storage bottle volume 120L

　　

3.2 heptafluoropropane storage cylinder group

The storage of bottles, containers, valve, a pressure generator, electric start valve, hose, usually stored bottle store heptafluoro, fire extinguishing agent release out when fighting.

Heptafluoropropane storage bottle storage pressure check method: check the pressure gauge switch is closed, that is, whether the compression nut tightening; remove the pressure gauge, the pressure relief cavity pressure seal; this pressure gauge should return zero, otherwise replace the pressure gauge; fitted with pressure gauge, open switches, displays the normal pressure.

Solenoid valve installed in the container to start valve, electric or manual open container valve to release the extinguishing agent. Urgent cases, you can use your finger pull handles insurance, insurance for pull-out, rattling manual button driven solenoid valve action.

Pressure signal generator installed in a outlet sites, when you release the heptafluoropropane, pressure signal generator action sent a signal to the fire control work.

High pressure hose and nozzle for container valve.

4 fire extinguishing system installation and debugging

4.1 ZQW2-120-heptafluoropropane no pipeline automatic fire extinguishing system box smooth placed in advance on the basis of a set, fixed with bolts.

4.2 electromagnetic starter, pressure signal generator add-in to fire controllers, and check the line is correct, press the wiring diagrams and alarm controller connection.

4.3 inspection due to electromagnetic starter, the action mechanism of spring is in the compressed State, in order to prevent the installation, commissioning and transport in malfunction, the action mechanism is positioning axis locked insurance until the whole system after the installation, commissioning, which is put into use, you must set the electromagnetic Starter insurance positioning axis Rotary u-turn tighten up after the installation, otherwise the electromagnetic Starter actions agencies will not be able to act.

5 fire-fighting system use and operation

5.1 automatic control

No one in the protected areas, fire control box control mode switch to "automatic" position, automatic fire extinguishing system is in control state. When the reserve has issued a fire, fire detectors, alarm fire signal that emit sound and light alarm signals, at the same time issued a joint directive, close linkage between the device and, after about 30 seconds delay time (at this point reserve personnel must be all withdrawal), the issue of fire fighting instructions, electromagnetic valve action open storage startup bottle container valve, fire extinguishing agent is released.

5.2 electric manual control

In the protection zone was working or on duty, a fire control box control mode switch to "manual", manual fire extinguishing system is in control state. Fires when the reserve has occurred, you can press the Start button on the controller, or lively open in protection zones outside the manual control box, press the Start button inside the box, you can start the fire-fighting system. In the automatic control of the State, still achievable electrical manual control, electric manual control before the reserve officers must be evacuated.

5.3 mechanical emergency manual control

Occurs when the reserve, but because of the power of fire to fail or automatic detection system, control system failure, you cannot perform fire fighting instructions, open the cabinet doors, press store bottle on electromagnetic Starter emergency button to release the fireAgent for fire suppression. Emergency manual control, you must shut down the affected fire extinguishing effect of devices (e.g. ventilator, Windows and doors, etc.), and confirm that the protection of all persons in the region have passed before the withdrawal.

5.4 when a fire alarm, the delay time found do not need to start the fire-fighting system, you can press the controller or manually control box red emergency stop button to stop the fire fighting instructions issued to stop system fire-fighting program.

Before the fire, 5.5 personnel must evacuate the protection zone; spews heptafluoropropane after should maintain the necessary extinguishing time to reserve ventilation, open doors and Windows; reserve outstanding ventilation shall enter, before personnel must wear masks when they entered.

5.6 without releasing the extinguishing agent to be detection system, you can press the test button to run the test transfer switch, you can test the system.

(1) fire controller reset.

(2) pressure signal generator piston reset.

(3) electromagnetic Starter device reset.

(4) replace the container valve sealing membrane.

(5) according to the design requirements of re-filling.

(6) the box container nozzle connectors, valves, hose connections must remain sealed correctly installed.

6 fire extinguishing system maintenance

6.1 extinguishing system after installation, you should follow the design content and requirements, according to the national fire standards for inspection, testing and debugging, and experience your qualified before delivery.

6.2 gas fire extinguishing system run using by a trained specialist is responsible for; use of personnel should be familiar with the system's structure, operation, performance and action programs, and various parts of the structure and working condition; to know when the reserve fire extinguishing equipment as input type, quantity, location and action state; familiar with the operation of emergency fire-fighting system and fire extinguishing system recovery work in content and operations.

6.3 monthly at least for the system to carry out a Visual inspection, meet the following requirements:

(1) equipment in place correctly, no touch invasive, fixed firmly.

(2) normal working state, no leakage phenomenon.

(3) line, meter indicates normal, signs, safety instructions properly.

6.4 yearly annual inspection:

(1) check the heptafluoropropane storage pressure, such as pressure gauge pointer is not in green normal area, or in the storage temperature pressure gauge indicating the numeric value and the corresponding numeric disc does not match, you should remove the storage of bottles, for weighing check, identify the reasons for exclusion in a timely manner, as designed to complement the extinguishing agent.

(2) remove the bottle from the storage of electromagnetic Launcher, application of the system's own fire control circuits are powered on checks, should start after normal, check the electromagnetic Starter device must be reset.

(3) on the rubber seals for sampling, is aging.

6.5 every five years on the system to carry out a checking:

(1) remove the bottle heptafluoropropane storage, weighing and inspection

(2) to take apart and wash on valves, test, and debug the system.

7 summary

Taipu River pump station of central control room and computer room equipment and decoration are Deluxe, the probability of fire appears low, for security reasons and the fire requirements, fire-fighting equipment must be installed, ZQW2-120-heptafluoropropane no pipeline automatic fire extinguishing system is able to meet the fire requirements, the second is after the fire-fighting facilities to minimize the damage, not as a result of fire suppression and destruction facilities, easy installation, easy maintenance. Heptafluoropropane automatic fire extinguishing system with its own characteristics, widely used, taipu River pump station heptafluoropropane no pipeline installation of automatic fire extinguishing system, enabling us to better understand its performance, having the characteristics of its installation, the eleventh China hydropower Engineering Bureau and electric installation branch of fire fighting system installation has laid a good foundation.