【 Weak current College 】 deluge valve system introduction, system works, maintenance and service---Power By 【 China power house network 】

ZSFG series-rain flap valve is composed of deluge system, preaction systems, water systems and water spray systems important component, usually with imports Reed valve, solenoid valve, discharge valve, hydraulic test alarm, manual emergency valve, pressure gauge, rain valve group. In addition to the predefined roles system, fire protection system on the side of the pipeline received are open nozzle, pipe network is filled with water. Shower valve characteristic is in the discovery of fire, the rain and the valve disc quickly opening, the pressure of water sprinkler pipe by fire from exhaled coverage or isolate entire reserve, for rapid fire after the fire, the fire load, not control the use of the site. Deluge valves of the open method is divided into automatic, manual and remote manual in three ways. When you reserve a fire, the ambient temperature rises, the fire detection system, shower valve is opened, the water rapidly through the open nozzle churning out perform fire-fighting capabilities, and may issue a warning signal to reach the alarm, fire control, fire fighting purposes. The device can also be made up of foam and foam systems deluge system for extinguishing a fire and explosion hazardous liquid. This plant sets supply (also spare parts supply), users only need to press the valve bottom flange surface height and the flange connection dimensions can be installed to use.
■ System structure introduction
ZSFG-shower valve unit mainly consists of water control valve (valve), deluge valve, manual emergency equipment, automatic drip valve, drain ball valves, water supply side pressure gauge, the pressure control Chamber.
1. deluge valve: this deluge valves belong to leveraged structure, with locking force is small, the opening action of flexible, reliable, and other characteristics. Usual deluge valve disc is turned off, the system plays the role of water barrier. When a fire occurs, by controlling the cavity pressure, due to export through to control intra-imported vacuum unit, allows the control of the cavity pressure falling sharply, when control of the pressure inside the cavity than water pressure is low value, the function in the bottom-up cover is greater than the power of leverage in the disc on the downward force, deluge valve disc is open water pressure, the water flows into a fire extinguishing system side, control the pressure by the cavity in the protected area of the fire detection system and it is the shower valve disc drive system control, it can be electrical, hydraulic (wet), pneumatic (dry).
With reset and external reset mechanism: after the deluge valve opening, because of the control chamber pressure, pressure balance focus always fall meeting ring, disc cannot cover all ring reset, the valve fire reliable and reduction shall not be required to open the valve cover, simply rotate the reset axes driving wrench clamping buckle to reset, use a very convenient.
ZSFG-deluge valve device specifications and technical parameters are as follows: model nominal diameter mm body height mm flange diameter mm flange screw diameter mm hole diameter of the hole a few mm
ZSFG150　　150　　　422　　　　280　　　　240　　　　　8　　　　¢23
ZSFG200 200 480 335 295 12, 232. water control valve (valve): when closing the valve is handy for maintenance, work should be on, and chained died doing flag.
Fire extinguishing, fire managers to confirm that no longer fighting completely extinguished. Reopen this valve must open when the diaphragm supply control ball valve, pressure clips live disc, and then slowly open water control valve.
3. manual emergency equipment: as in emergency situations to assist open shower valve means, can also be used as control Chamber exhaust vent pipe.
4. automatic drip valve: this valve in the Shui no pressure to automatic drainage, water pressure can remain under seal. Mainly used for small amounts exclude water leakage.
5. drain ball valves: check the water supply pipeline is blocked. Can also be used to check the water alarm work correctly.
6. pressure gauge: supply side pressure gauge indicates the water pressure, pressure gauge indicating control control cavities cavity pressure. ■ Main technical parameters and specifications
1. nominal diameter: 150, 200 (mm);
2. rated pressure: 1.2MPa;
3. wait should work pressure: 0.14MPa;
4. open time: 5s;
5. connect the flange standard flange: GB9113.3;
6. head loss: ≤ 0.07MPa;
7. water supply flow rate: nominal diameter 150mm 200mm
Water flow 2200L/mm 5000L/mm ■ system working principle
Deluge system control mode has three: wet and dry pipe conduit, solenoid valve drive, they are suitable for different occasions, specifically the following:
1. wet tube drive
Wet pipe operation mode is the deluge system minimum simplest one mode of operation, it consists of a protected area of a series of closed-type probe head, the tubes filled with a certain pressure of water, and the shower valve control Chamber of export, when any of the sprinkler head movements, deluge valve control Chamber communicates with atmosphere pressure exit, rains valve action. Wet tube just alarm system, cannot use it to control the fire. Emergency hand alarm box provides a remote manual operation mode, automatic alarm system's accessibility features. Wet pipe installation has the following requirements:
A) wet pipe can not be installed in the frozen zone;
B) cannot be installed in ambient temperature above 70 ° c (150 degrees f);
2. dry tube drive
Application of dry tube operates in two ways, one is generated with icing; the other one is wet catheter cannot meet the spray head installation height and length of the pipeline. Dry tube from the protected area of a series of closed-type nozzle, the pipeline filled with a certain amount of pressure of air, full of pressure pipeline connected to the shower valve control Chamber, dry-pipe, some full of moisture the air can cause pipe freezing zone or other issues, the proposed role of dry compressed gases such as nitrogen. WhenAny action, dry sprinkler pipe air pressure decreases, the deluge valve action.
3. electrical drive
Electrical control of rain fire suppression system: from shower valves, solenoid valve, open type nozzle, various electronic detector and fire alarm controller and other components.　　Throughout the system in various electronic detectors and open distribution in the sprinkler fire partition key parts, when a fire once electronic detection systems to different types of fire signal fed to the fire alarm controller through analysis, and judgement to fire open solenoid valve outlet so that the rain valve control for cavity pressure drop, rain, water valve quickly turned from open nozzle churning out fight fire. ■ Use description
1. installation
1) ZSFG deluge valve equipment should be vertical installation, the installation location should have sufficient space for installation, maintenance and upkeep.
2) in a frozen regions, rain valve should be installed in a heating indoor, wet air control valve not rain on the icy parts of the installation, the installation environment temperature can not be more than 70 degrees centigrade.
3) installed before the deluge valve, the water supply pipeline must be thoroughly cleaned, make sure no dirt in the pipeline.
4) wet control rain fire extinguishing system its closed sounding sprinkler installation height should not exceed the table values: water pressure (MPa) 0.140.200.300.350.400.500.600.700.800.901.01.101.12
Allowable DN1503.34.05.36.68.010.613.315.317.319.322.024.626.6
Height DN2003.25.27.08.51114.51821.22426.53133.635 5) dry control rain fire extinguishing system its water deluge valve pressure shall not exceed the control chamber pressure 0.05MPa.
2. debugging
1) main drainage test: open drain valve, observe whether there has been a stable flow out, if not, check the water supply pipeline is blocked
2) alarm test: first close control valve of hydraulic alarm, in order to prevent water flowing into the system side, second open alarm test valve, normally, hydraulic pressure switch alarm and should work properly, the test, close the alarm test valve, open the control valve for the hydraulic alarm.
3. maintenance and service
Should be done once every quarter and main drainage test and alarm test, a test open valve function. Rain gear and accessories should be conducted on a half-yearly basis maintenance.
1) disc seals clean or replace: does not contain corrosive detergent cleaning rubber seals, seals have wear should be reversed.
2) seat cleaning and replacement: must clean the valve seat, and check for damage, if there are cracks, scratches or pressure, severe damage is not available, finer grind and sand repaired damaged seriously should be replaced.
3) check regularly the work of electromagnetic valve, solenoid valve is not functioning properly, check wiring circuit, circuit normal need to replace the solenoid valve.
4 other auxiliary valve) to check whether the leakage or damage should be repaired or replaced.
5) should be kept clean, often matching filters on the filter for cleaning.
6) had to have action the rain and the valve should check the reset lever is deformed or loose, the Reset PIN of the shaft is bent or damaged, "O"-rings for damage such as damage should be replaced.
7) each year, you should check once seals and seat, remove dirt, scratches and smooth with a fine sandpaper, if it is damaged with spare parts replacement. At the same time that there is no dust cleaning filter.
8) daily observe the water level, water pressure and the corresponding valve State is correct.