1. The fire sprinkler system is a fixed fire fighting device, which is widely used. The fire sprinkler system is characterized by low price and high fire extinguishing rate. In case of fire, the sprinkler head starts to work under the action of water pressure, which can control and extinguish the initial fire and is widely used in building fire protection.
2. The fire sprinkler system is divided into manual control and automatic spraying. The manual control sprinkler system mainly includes fire pump, pool, main pipeline, sprinkler head and end drainage device; The automatic sprinkler system mainly includes pool, valve, water pump, air pressure tank control box, main pipeline, signal butterfly valve, water flow indicator, branch pipe, sprinkler head, exhaust valve and end water test device.
3. The building water supply and drainage plan is drawn on the basis of the building plan. Generally, only rooms related to pipe layout and water equipment need to be drawn on the building plan.
4. The ground floor plan needs to show the water supply inlet pipe and sewage discharge pipe, so the ground floor plan must be drawn separately. When the water equipment and pipeline layout of other floors are identical, only one plan can be drawn. For floors with different water supply and drainage methods, they need to be drawn separately.
5. The fire hydrant must be placed in the corridor or hall and other public shared spaces. It is required to have eye-catching marks, and it is not allowed to place obstacles in front of it to avoid affecting the normal opening of the fire hydrant; The use method of fire hydrant is: open the fire hydrant door, press the internal fire alarm button, connect the valve door with the water hose, connect the water gun and water hose, pull the water gun near the fire point, and finally open the valve to spray water from the water gun.
6. The building water supply and drainage plan shows the layout of water supply and drainage pipes and sanitary equipment in the building; The plan mainly includes the type and location of various water consuming equipment, the location of water supply and drainage pipe network, the installation method of pipes, and the plan location of various pipe parts.
7. Indoor fire protection system refers to the facility system installed indoors to extinguish the initial fire in the building. Indoor fire fighting system mainly includes indoor hydrant system, automatic sprinkler system, foam fire system, carbon dioxide fire extinguishing system, halon fire extinguishing system and dry powder fire extinguishing system. The indoor fire protection system is a suburban and necessary fire safety precaution.
8. The drainage project is a project to drain human domestic sewage, all kinds of waste water and excess surface water in production. Drainage works consist of drainage pipe system (or drainage ditch), wastewater treatment plant and final treatment facilities; The drainage pipe system is used to collect and transport waste water or sewage; The wastewater treatment plant is used to treat wastewater or sewage, including removing suspended solids, improving oxygen consumption, disinfection, etc. The sewage treatment plant is mainly used to treat industrial wastewater and domestic wastewater with high degree of pollution to avoid environmental pollution; The final treatment facility is used to discharge the wastewater treated by the sewage treatment plant that meets the requirements into the water body or land.
9. The fire water supply project consists of fire water supply source, fire water supply equipment, pipeline system, indoor fire-fighting equipment and system components. Fire water supply equipment can be divided into: automatic water supply equipment (fire water tank), main water supply equipment (fire pump), temporary water supply equipment (pump adapter), local pressurization equipment (pneumatic fire water supply equipment).
10. The valve is a control part in the fluid conveying system, which has the functions of cut-off, regulation, diversion, pressure stabilization, diversion or pressure relief, and prevention of reverse flow. The valve can be used to control the flow of air, water, oil, liquid metal and other fluid media. The valves are mainly divided into block valve, check valve, safety valve, regulating valve, diverter valve, exhaust valve, etc; The block valve is also called a closed valve, which is used to connect or block the fluid in the pipeline. Leakage is not allowed for block valve. Block valve is also divided into gate valve, stop valve, plug valve, ball valve and butterfly valve; Check valve, also known as one-way valve or check valve, is used to prevent the backflow of fluid in the pipeline; 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 pipeline; Regulating valve is sometimes called throttle valve or pressure reducing valve, which is used to regulate the pressure and flow of fluid and other parameters; The diverter valve includes various distribution valves and steam traps, which are used to distribute, separate or mix the fluid in the pipeline; The function of the exhaust valve is to remove the excess gas in the pipeline, improve the utilization rate of the pipeline and reduce energy consumption. The exhaust valve is mostly installed at the commanding height or elbow, and is widely used in boilers, air conditioners, water supply and drainage pipelines.
11. Fire box refers to the fire-fighting facilities that provide water for the fire brigade in fire fighting and rescue activities. The fire water tank can store water. On the one hand, it can make the fire water supply pipeline full of water, save the time of filling the pipeline after the fire pump is started, and win the key time for putting out the fire; On the other hand, the water tank (such as air pressure water tank) with pressurization and pressure stabilization system can ensure the full water column of the fire water gun, which plays a decisive role in extinguishing the initial fire.
12. The water supply and drainage system drawing mainly uses the axonometric drawing. The vertical direction in the drawing 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 pipeline segment is the type and diameter of the pipeline; The axonometric drawing is a single plane projection drawing, which can simultaneously reflect the shape of the object on three coordinate planes on one projection plane. The display mode of axonometric drawing is close to human visual habits, vivid, realistic and full of stereoscopic sense; In the axonometric drawing, the length in the horizontal direction can generally be measured directly in the drawing, while the size in the vertical direction can be determined according to the floor height of the building and the installation height of the sanitary ware.
