2. Fire sprinkler system is divided into manual control and automatic sprinkler. Manual control automatic sprinkler system mainly includes fire pump, pool, main pipeline, sprinkler and terminal drainage device; Automatic sprinkler system mainly includes pool, valve, water pump, pressure tank control box, main pipeline, signal butterfly valve, water flow indicator, branch pipe, nozzle, exhaust valve and terminal water testing device.
3. The building water supply and drainage plan is drawn on the basis of the building plan, and generally only rooms related to pipeline layout and water equipment need to be drawn on the building plan.
4. The bottom floor plan needs to give the water inlet pipe and sewage pipe, so the bottom floor plan must be drawn separately. Only one floor plan can be drawn when the water equipment and pipeline layout of other floors are exactly the same. For different floors and different water supply and drainage methods, they need to be drawn separately.
5. Fire hydrants must be placed in public * * * * spaces such as corridors or halls, and eye-catching signs are required, and obstacles shall not be placed in front of them, so as not to affect the normal opening of fire hydrants; The use method of the fire hydrant is as follows: open the fire hydrant door, press the internal fire alarm button, then connect the valve nozzle with a hose, connect the water gun with a hose and pull the water gun near the fire point, and finally open the valve to spray water from the water gun.
6 building water supply and drainage plan shows the layout of water supply and drainage pipes and sanitary equipment in the building; The scheme mainly includes the types and locations of various water-using equipment, the location of water supply and drainage pipe network, the installation mode of pipelines, and the plane location of pipeline components.
7. Indoor fire protection system refers to the facility system installed indoors to extinguish the initial fire of buildings. Indoor fire fighting system mainly includes indoor fire hydrant system, automatic sprinkler system, foam fire extinguishing system, carbon dioxide fire extinguishing system, halon fire extinguishing system and dry powder fire extinguishing system. Indoor fire protection system is a necessary fire safety measure in suburbs.
8. Drainage engineering is a project to discharge human domestic sewage, all kinds of wastewater and excess surface water in production. The drainage project consists of drainage pipeline system (or drainage channel), sewage treatment plant and final treatment facilities; Drainage pipes are used to collect and transport waste water or sewage; Wastewater treatment plants are used to treat wastewater or sewage, including removing suspended solids, increasing oxygen consumption and disinfection. Sewage treatment plant is mainly used to treat industrial wastewater and domestic wastewater with high pollution level to avoid environmental pollution; The final treatment facility is used to discharge the wastewater that meets the requirements after being treated by the sewage treatment plant into the water body or land.
9. Fire water supply project consists of fire water supply source, fire water supply equipment, piping system, indoor fire extinguishing equipment and system components. Fire water supply equipment can be divided into: automatic water supply equipment (fire water tank), main water supply equipment (fire water pump), temporary water supply equipment (water pump adapter) and local pressurization equipment (pneumatic fire water supply equipment).
10. The valve is a control element in the fluid conveying system, which has the functions of cutting off, adjusting, shunting, stabilizing pressure, shunting or relieving pressure, and preventing backflow. Valves can be used to control the flow of fluid media, such as air, water, oil and liquid metal. Valves are mainly divided into block valves, check valves, safety valves, regulating valves, diverter valves and exhaust valves. Block valve, also known as closed-circuit valve, is used to connect or cut off the fluid in the pipeline. For block valves, no leakage is allowed. Block valves are divided into gate valves, globe valves, plug valves, ball valves and butterfly valves. Check valve, also known as one-way valve or check valve, is used to prevent the fluid in the pipeline from flowing backwards; The function of the safety valve is to prevent the fluid pressure in the pipeline from exceeding the specified value, so as to achieve the purpose of safety protection of equipment and pipelines; The regulating valve is sometimes called throttle valve or pressure reducing valve, and its function is to regulate the parameters such as pressure and flow of fluid. Diverter valves include various distribution valves and traps for distributing, separating or mixing fluids in pipelines; The function of exhaust valve is to remove excess gas in the pipeline, improve the utilization rate of the pipeline and reduce energy consumption. Exhaust valves are mostly installed at commanding heights or elbows, and are widely used in boilers, air conditioners and water supply and drainage pipelines.
1 1. Fire box refers to the fire-fighting facilities that provide water for the fire brigade in fire fighting and rescue activities. On the one hand, storing water in the fire water tank can make the fire water supply pipeline full of water, save the time of filling the pipeline after the fire water pump is turned on, and win the key time for fire fighting; On the other hand, the water tank with pressurization and pressure stabilization system (such as pneumatic water tank) can ensure that the water column of the fire water gun is sufficient, which plays a decisive role in extinguishing the initial fire.
12. The water supply and drainage system diagram mainly adopts axonometric drawing, in which the vertical direction indicates the up and down direction of the pipeline, the horizontal direction indicates the left and right direction of the pipeline, and the 135 degree direction indicates the front and back direction of the pipeline; The number marked on the pipe section is the model and diameter of the pipe; The axonometric drawing is a kind of one-sided projection drawing, which can simultaneously reflect the shape of an object in three coordinate planes on one projection plane. The display mode of axonometric drawing is close to people's visual habits, and it is vivid, realistic and stereoscopic. Generally, the horizontal dimension in the axonometric drawing can be measured directly in the drawing, while the vertical dimension can be determined according to the building height and the installation height of sanitary ware.
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