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Price:Stainless steel fire tank
Product introduction:Suzhou Shanghai stainless steel factory, stainless steel water tank fire water tank, fire water tank, stainless steel manufacturers, the price of the heat preservation water tank, water tank, washing tank, stainless steel cylindri
1. The water pump outlet pipe is used as the outlet pipe of the stainless steel fire fighting tank
Fire technical specifications, the most unfavorable point hydrant hydrostatic pressure should not be less than 0.07Mpa, the most unfavorable point of the sprinkler pressure should not be less than 0.05Mpa. In practical design, fire water tank often needs to set up booster pump to meet the pressure requirements. Some designers charge the water pump outlet pipe as the outlet pipe of the fire water tank, which is very wrong. This is because the main purpose of setting water booster pump is in the initial stage of a fire fire pump before the start of the system to meet the requirements of the fire hydrant and sprinkler water pressure, the water on the fire hydrant water supply system should not be greater than 5L / s, the automatic sprinkler system should not be greater than 1L / s, was considerably less than the standard of indoor fire use of water, can not meet the requirements of the initial fire fighting water. Therefore, the booster water pump installed on the roof shall be provided with a bypass pipe at the side of the water outlet pipe of the booster pump, and the water discharge rate shall not be less than the water consumption required for the fire in the early stage of the fire fighting.
2 、 stainless steel fire water tank outlet pipe is not equipped with one-way valve
Some design fire water tank using fire pipe water supply or fire water pump, through the fire water tank, and then into the fire pipe network. These practices reduce the fire pipe pressure, can not guarantee the full play of fire fighting equipment, so should use life pipeline to supply water to the fire water tank, and a one-way valve in the outlet pipe of fire water tank, fire water tank to prevent the fire pump into the water.
3, the use of pneumatic water tank instead of stainless steel fire water tank
In some multi-storey buildings, the roof is made of steel structure, and it is difficult to set fire water tank. Designers usually consider using pneumatic water tank instead. But buildings with severe hazard levels are not allowed, and fire water can only be used to provide initial fire water.
4, the stainless steel fire water tank outlet pipe from the alarm valve after the pipe access
Some designers will be the top water supply pipe outlet pipe direct access automatic sprinkler system, fire water tank (the alarm valve), appears to meet the pressure and flow requirements and saving material, in fact, this is the wrong approach. This is because the fire water tank outlet pipe from the alarm valve after the piping connection, the water in the tank will not pass through the alarm valve directly into the pipe network, so that after the nozzle moves the alarm valve after the pressure pipeline long time remain high, delaying the pressure switch, hydraulic alarm can alarm in time, the pump has been slow to start therefore, "automatic sprinkler system design" clear requirements, fire water tank outlet pipe should be connected before the alarm valve entrance pipeline.
5 stainless steel fire water tank is not installed in the highest part of the building
Some local steel structure roof of large space buildings, such as the stage of the theatre, the designer will fire water tank is arranged in the bearing capacity of the reinforced concrete structure building relatively good intermediate layer, but lower than the most disadvantageous sprinkler height, boost pump lift to meet the highest requirements of sprinkler working pressure. The designer's idea is that the fire tank can be equipped with a booster pump to meet the most adverse pressure of the hydrant and sprinkler. In fact, this is the wrong understanding of the meaning of fire water tank, so that the fire water tank has become an intermediate pool, can not rely on gravity to fire the water supply pipeline system.