【 Weak current College 】 fire pipe installation scenarios

Competent bracket installation
1. material specification options: DN100-150 or more pipes, steel angle for L40X40X4; DN100 following pipeline, fixed-angle as L30X30X3.

2. bracket type selection: DN150 above pipe, fixed support for gantry; DN100 following pipeline, fixed support for hanger.

3. Select the installation location: more than pipe DN100, fixed bracket installed in the bottom beam.

4. length: the length of the veneer beams (about 25cm) together with the horizontal center of the vertical pipe. And then subtract the radius of the pipeline.

5. bracket installation method: an extension for the horizontal bracket installation, then walk along this line by spacing install several bracket.

6. fixed bolt size selection: selection of 12 # expansion bolts.

7. installation spacing: single competent support spacing ≤ 3 m;

Competent installation

8. material specification options: 13 ~ 64 only nozzle diameter of 200 DN100; 64-DN150 only above the caliber.

9. pipe type choose: may choose according to the cost and use of longevity and laying pipe, pipes using plastic coated or galvanized steel.

10. Select the installation location by column side beam laying.

11. connection fittings: pipe with the diameter of a connection between more than three or four-pass, DN100 size head tube and pipe connections, use the clip. Reducer adopting size head with clamp connection.

12. the branch pipes: plastic coated steel pipe connections, three and four-side by clamp fixed; galvanized pipe connection, in the pipeline lateral holes around the connection machine three and four-way and the size of the header.

13. the installation method: lift tube or you can use the down pipe installation in the chain of gantry frame, using U code fixed, then according to this method to install a second pipeline, then the two branches first ends the connection.

14. connection method: there are three ways to connect, flange connections, welded, clamp connections. According to the design requirements, you can use a connection method.

Branch pipe installation

15. material specification select: 1 nozzle diameter of 200 DN25; 2 nozzle diameter of 200 DN32; 3 ~ 4 nozzle diameter of 200 DN40; 5 ~ 6 nozzle of the caliber DN50; 7 ~ 8 only nozzle diameter of 200 DN65; 9 ~ 12 only nozzle diameter of 200 DN80;

16. pipe type choose: may choose according to the cost and use of longevity and laying pipe, pipes using plastic coated or galvanized steel.

17. Select the installation location: according to the drawing of location.

18. the installation method: branch pipes first end the connection, and then connect with the supervisor.

19. branch pipe fittings: three or four-way connection branch pipe end.

20. connection fittings: size head and three-or four-way connection, intermediate desired retro-20cm short-tube.

21. connection method: connection by screw.

Branch pipe bracket installation

22. material specification options: DN40 ~ 150 or more pipes, steel angle for L40X40X4; DN32 following pipeline, fixed-angle as L30X30X3.

23. bracket type selection: DN100 following pipeline, using fixed support for t-hanger, U code fixed.

24. in the choose the installation location: fixed bracket installed in the floor base; in larger than the diameter of the pipe DN40 corner near the installation a hanger, not less than the distance between the nozzle and the installation of a stent 40cm.

25. bracket length determine: flat floor bottom-pipelines to the horizontal center of the vertical distance, and then subtract the pipeline of RADIUS; uneven floors, each measuring bracket length only.

26. bracket installation method: follow the branch pipe installation, from the side near the supervisor began mounting bracket, bracket from the nozzle spacing is not greater than 40cm each nozzle has a stand, if the nozzle is close to the supervisor, support may be installed on the other side of the head.

27. fixed bolt size selection: selection of 8 # expansion bolts.

28. installation spacing: single competent support spacing ≤ 3 m.

Nozzle and pipe installation

1. on the sprinkler pipes to DN25, beginning with the branch pipe Tee Connect, connect size head end, its length is DN25X15 as floor bottom margin height minus three mouth 20cm ..

2. the mixing tube is the ceiling of the nozzle tip some pipes, the pipes can not be the order of the dry pipe at the same time, to go hand in hand with the ceiling decoration. Ceiling joist ceiling mounted, depending on material thickness fix nozzle elevation of reserved port, press the ceiling decoration figure to determine the coordinates of the nozzle, the branch of the reserved port be accurate. Branch pipe ends with the tapered pipe band, DN25X15 couplings and ceiling decoration layer, line installation.

Upper and lower sprinkler installation

Installation: no on nozzle ceiling installation of vertical head, sprinkler installation height from floor bottom 150mm, suspended ceiling, ceiling clearance height is greater than 800mm in ceiling with a layer of vertical head, sprinkler installation height from floor bottom 150mm.

Jet installation:, apart from shops have ceiling areas outside the install quick response sprinklers, use drop type (with decorative dish) or subtle drop-type nozzle, installation height flat ceiling. No ceiling air duct width is greater than 1200, duct bottom Central Office with a layer of hanging-type nozzle.

Side spray installation: letting fireproof glass inside set horizontal mounted sidewall sprinkler, nozzle spacing to 2000mm, nozzle spacing interval 500mm glass.

Sprayer model options: all the sprayer's action temperature except high-temperature parts for 930C kitchen, are 680C.

Sprinkler installation time selection: nozzle installed in piping systems complete pressure test, flushing, and spray also pending completion of the internal decoration of buildings.

Nozzle selection tools and accessories: mounting nozzle should use specially designed plate hand, filling the use gather four ethylene sealing belt.

ARC spraying pipeline component installation

1. signal valve should be installed in the pipeline before the flow indicator, and the spacing of flow indicator should not be less than 300mm.

2. water meter installation should flush the pipeline pressure test and qualification, installation, vertical installation in horizontal pipe on the side, their actions should be conducted and the direction of flow, blade cannot be the pipe wall friction and collision.

3. pressure orifice plate should be installed in the duct flow turning on downstream side of straight pipe or signal floodgate valve outlet flange, and turning on distance should not be less than 2 times the diameter of the pipeline.

4. alarm set installation you should install water control valves, alarms, and other auxiliary piping connection; water control valves, alarms and water allocation should be conducted in a consistent flow of dry pipe;

5. wet alarm valve should be installed vertically, from indoor floor height 1.2m, on both sides and wall distance should not be less than 0.5m, positive and wall distance should not be less than 1.2m. Alarm and piping should be smooth and flowing water.

6. retarder to hydraulic alarm using ZG3/4 galvanized pipe, length cannot exceed 20 m.

7. hydraulic alarm should be installed in a public channel or some of the on-duty room.

8. pipeline wear expansion joint Department to install stainless steel corrugated compensator.