【 Weak current College 】 automatic sprinkler system debugging scenarios

First, overview
Automatic sprinkler system is the one of the main fire fighting facilities, in addition to the outdoor substation and distribution, all buildings are equipped with automatic sprinkler pipe and nozzle, by region, I, Ⅱ, Ⅲ of spray system are independent form the system while I, Ⅱ, ⅲ trunk pipe in the ground floor, located above each other Unicom electric butterfly valve control their opening and closing status for mutual support.
Second, the basis
1. the new terminal building fire-fighting water professionals and electrical engineering drawings (from Guangzhou Institute of design).
2. the automatic sprinkler system installation and acceptance (GB50261 — 96).
3. the industrial automation and instrumentation engineering construction and acceptance (GBJ93-86).
4. the automatic fire alarm system construction and acceptance (GB50166-92).
3. debugging content and method
1. spray pump function debug
Spray pump function debug its 2h full load stand-alone pilot qualified after using temporary pipeline for debugging.
(1) debugging before you should make sure that the pressure tank installed, inflatable, gauge installed qualified, control cable in place.
(2) to manually restart the pump: close the temporary pipe outlet valves, regulators pumps, manually start the temporary pipeline system filled with water, and gradually step-up, when the gauge to stop after 0.55MPa.
(3) the regulators pumps to work automatically.
(4) slowly opening temporary pipe outlet valve so that the system pressure, when the pressure drops to 0.5MPa, regulators pumps should automatically restart pump water. When you meet the above requirements, continue to the next test, the device switches to overhaul State, make adjustments to the control system in compliance with the requirements, proceed to the next experiment.
(5) duplicate the above paragraph (2), (3), and then slowly opening temporary pipe outlet valve so that the system pressure, when the pressure drops to 0.5MPa, regulators pumps should automatically start the water, this time, slowly close the temporary pipe outlet valves, pressure, when the pressure rises 0.6MPa, regulators pumps should stop automatically. When you meet the demands you make under _ pilot, the device switches to overhaul State, make adjustments to the control system until after you meet the requirements for the next test.
(6) a voltage pump switch to maintenance location, repeat (2) to (5), another pump should be able to work automatically.
(7) the voltage pump switch to overhaul State, when the system pressure 0.5MPa following, and then switch to the regulators pumps, regulators pumps automatically State should start automatically. Close the outlet valve system, main pump step-up to the system, and then add the above 0.6MPa regulators pumps switch to automatic status, regulators pumps should be can't start, otherwise the device switches to overhaul State, make adjustments to the control system, up to meet the requirements.
(8) spray pump pressure switch should be can't meet Kai pump and fire Centre features start-up and stop. Water pump function debugging is completed, the device switches to overhaul State, the temporary removal of the pipeline, restore the system to the design requirements of formal working state.
2. spray system debugging
(1) debugging premise
1) maintenance of automatic sprinkler system piping, ensure that all the sprayer fitted, sprinkler damage, no running water hazards, pipe branch, cradles, baffled bracket is complete and reliable, with specifications.
2) system on wet alarm valve and the valve flow indicator, and before the end of the test unit valves are closed.
3) pump dry run has qualified single, regulators pumps automatic function debugging is complete, the pipeline flushing has qualified.
4) formal water ready.
5) combined with debugging, make sure the water meter, wet alarm valve for pressure switch wiring is complete, the Centre has debugging conditions.
6) debugging preparation phase and the maintenance, adjustment, and repair of the equipment to the State.
(2) debugging:
1) I, Ⅱ, Ⅲ between connectivity electric butterfly valve closed, paragraphs debugging separately.
2) pump adapter charging water test.
3) manually start spray system regulators pumps, this paragraph automatic sprinkler system before wet alarm valve pipe full of water of the trunk, and then close the regulators pumps.
4) test system is filled with water.
5) to wet alarm valve, flow indicator as standard systems are divided, according to the situation on an individual basis on the conditions of the flow indicator area for debugging.
(3) debugging:
1) pump adapter test: water
Contact with the owner with consent from close to spray system pump adapter outdoor hydrant Department hose to the pump adapter, while the indoor water pump house pump outlet outlet orifice on the temporary authority, one ground floor mezzanine (pump adapter test before the system as no water status). Open fire hydrant to pump adapter water filling, open the valves, should have adequate water flow into the ground floor mezzanine. Who meet the requirements, proceed to the next test pump adapter, check the pump adapter, not qualified replacement after the test. Turn on the pump adapter to test until all qualified.
2) spray system water test:
① When a flow indicator partition possess sufficient water, debug, open end of the regional Inspection Unit valves for gas on the water.
② the partition wet alarm valve on each test valve and hydraulic alarm valve closed, then opened the wet alarm valve the valve before and at the same time manually start voltage pump water, the area is filled with water before flow indicator.
③ opened the valve flow indicator, while before manually start voltage pump water, side, the side of the water. Wait until the system is filled with water will end inspection equipment Department valve closed.
④ continued pressure, so that the system pressure equal to pump lift, and then close the regulators pumps, and put it to work automatically, keeping the system pressure, tightness of the system test, check the system to ensure that no leakage.
⑤ tightness test after passing the wet alarm valve the valve recovery to normal working condition, open its pilot valve on the water, hydraulic alarm alarm should be humming, after passing the test valve closed, otherwise on wet alarm valve repair.
⑥ opened at the end of the testing device, on the regional features, regulators pumps should be based on the system pressure automatic start and stop on the system of water, at the end of the test device is opened, the alarm should sound alarm for the hydraulic, comply with the requirement after the end of the test device should be turned off and the pump, regulators pumps to overhaul State, check for fault location.
Flow indicators ⑦ other partitions should be based on the construction site, point to debug, water and its procedures are the same.
3) debugging:
① system test completed water, water meter, wet alarm valve for pressure switch wiring is complete, the Centre has debugging conditions, you can start system combined with debugging.
② Depending on site, arrangements for water flow indicator partition order of debugging. The pumps are automatically transferred to a working state.
③ opened the first flow indicator partition at the end of the testing device on the water, regulators pumps should automatically restart pump water, the wet alarm valve should quail, alarm, fire pump cycle pump, at the same time, the wet alarm valve for pressure switch and the water flow indicator should show the fire Centre and the fire alarm, and displays the fire pump to start automatically, the fire Centre should also be able to control start spray pump. Is able to satisfy the requirements, you should close the end of the testing device, while in the pump room spray pump manually stopped. Regulators pumps should stop automatically. Otherwise deal with the failure site check adjustments until compliant.
④ Repeat the steps above, then click on all debugging flow indicator partition until full compliance with the requirements.
⑤ the fire Centre on pump regulators pumps for manual start and stop test and the main pumps or regulators pumps a failure of the switch pilot, should be able to meet the requirements.
⑥ paragraphs Auto function debugging, add a section of the fire pump to overhaul State, and in that place at the end of the testing device, depending on the design of the test require connectivity by electric butterfly valve for debugging, you should be able to achieve mutual support. Then the two segments of fire pump to overhaul State, on the two ends of the testing device on water test, electric butterfly valve should be based on the design requirements for mutual support. At the same time in the fire Centre should have appropriate fire show, pump and valve opening and closing status display and fire alarm. Otherwise deal with the failure site.
⑦ the band combined debugging is completed, the entire system is restored to the design requirements of the normal working condition, fire acceptance.