【 Weak current College 】 high-rise building automatic control indoor hydrant system---Power By 【 China power house network 】

Summary: this article focuses on high-rise building indoor hydrant system common four control mode and the advantages and disadvantages of various control methods.
Keywords: high-rise building automatic control indoor hydrant

With the accelerated process of urbanization, urban high-rise buildings have been developing rapidly, the strengthening of the high-rise building overall capacity to resist fire are increasingly important. Current fire hydrant system is building the most common, fire fighting
The most economical and most essential. The tall buildings design fire protection standard (GB50045--94) and the automatic fire alarm system design code (GB50116--98), the provision of temporary high pressure water supply system in each hydrant Office should be located directly on the button to start the fire pump and should be equipped with the facilities system protection button; fire protection water supply should take measures against excess pressure; the fire pump, smoke and exhaust blower's start-up and shutdown, automatic control, you should be able to direct manual control; fire control equipment on display indoor hydrant system should have the fire pump work, a failed State.

First, the control of indoor hydrant

Follow the above specifications, high-rise building indoor hydrant system of automatic control generally fall into the following four ways:

1. each hydrant is equipped with fire hydrant Kai pump button to start the fire pump directly and submit to the fire control room, the button Add. Meet the regulations of law No. 7.4.6.7 bar requirements.

2. fire control room manually direct fire pump start-up and shutdown.

3, fire control rooms receive fire hydrant button signal, after confirmation by the fire alarm linkage control cabinet, linkage module that automatically starts the fire pump. Paragraphs 2, 3 kinds of control methods meet the automatic fire alarm system design code 6. 3. 1. 2 requirements.

4, in order to meet the regulations of law No. 7. 5. 6 requirements set against overpressure measures, fire hydrant hose online installation guages. Guages in pipeline pressure limit can automatically stop the pump is running. Heavy water in fire hydrant, fire regulators pumps water cannot be satisfied using the pipeline pressure dropped to lower, monometers direct start fire pump.

The above four kinds of automatic control mode is the high-rise building indoor hydrant system is currently the most common control.

II. characteristics of four ways:

The first control features: direct cycle pump, use a secure, easy to operate, reliable operation. Fire hydrant button has 6 line, two alarm bus, two cycle pump cable, two light lines, 6 root line voltage not exceeding DC 24V. Therefore users are very safe, two police wiring to the nearest bus into the probe or Manual alarm button, easy installation. Because the fire hydrant buttons installed in the fire box opening fire hydrants by simultaneously pressing the fire hydrant button, it is able to restart the pump. All fire hydrants in high-rise buildings by Kai pump line buttons and lights lines are parallel, even if such a connection on a fire hydrant button fails or wiring, near other hydrant button or you can start a fire pump, reliable operation. Another fire hydrant buttons restart pump cable, signal cable does not pass through fire control rooms, direct access by the fire hydrant, fire pump control the control loop, so the cycle pump rapidly. But the fire hydrant button wiring hole is too small, easy-fit is not strong.

The second control mode is characterized by the alarm linkage control cabinet cited one line connect to fire pump control cabinet within the start and stop the fire pump. But you must manually start the manual operation.

The third control characteristic is the need for manual operation. Alarm control cabinet in automatic mode, the received signal is verified after the fire hydrant, fire pump starts automatically. In the alarm or line is outside any interference or have some fault, it is easy to false positives or false operation.

The four control features without the need for any manual operation, as long as the opening fire hydrants, fire hydrant system hydraulic pressure dropped to lower electrical gauges, fire pump which is to start. Turn off the fire hydrant, stop, fire hydrant pipeline pressure rose to the ceiling, monometers fire pump that is to stop running. Start using monometers fire pump main play the role of anti-UHP. This kind of control in the event of a fire, the two above water gun water can guarantee the normal use. But when using a pistol, the consumption of small voltage pump water slightly inadequate water pump is started, the pipeline pressure quickly rose to the ceiling, fire pump immediately stop running, water pressure and soon reduced to minimum, fire pumps and immediately start, when the fire pump in the guages under control of the start-up and shut-down frequently. AC contactor will produce the saying "hit machine gun". This is very easy to damage the contactor, especially guages with bonding contact easily occur. I acceptance fire hydrant system, with a water gun do fire hydrant water test experienced this phenomenon, on the spot to damage a stun gauges.


At present, the fire pump control cabinet and automatic alarm linkage control cabinet of join, generally using bus module automatically control and much line module manual control in two ways, either bus module or multiple line module fails, the control room at the fire alarm cabinet were able to show its normal operation or a failed State, if the fire pump control cabinets in a time loop phase or quadratic control circuit failure, automatic control loop micro relay loss, fire control room will not be displayed. Once in this case there is a fire, fire hydrant system can not be timely, the best time to delay the fight, it will cause incalculable losses. The fire pump control cabinet of a loop and secondary circuits of various failures, fire pump control center are displayed, fully satisfy the automatic fire alarm system design specifications "in Chapter 6. 3. 2. The requirements of articles 2, requires further research.