Mei Fung Yue-hua Pump - Fire gas top pressure device - the national delivery - the lowest price

Top gas pressure fire water supply equipment consists of: pressure tank, regulator pump systems, cylinder systems, steam pump and automatic control system. Second, the regulator pump system startup and operation: Before starting the first use water pressure to the pressure tank and open D4 irrigation systems, charging to a certain extent, closed D4, start pump regulator (B1 or B2) continue to draw water system until the water level in the pressure tank water level increased to the upper limit of that is M1, the regulator pump (both a preparation of a use) is automatically stopped, then if the system pressure at the set lower pressure P2 (P1 system The upper pressure limit, P2 for the system pressure limit) or less, until the tank vapor pump automatically qi pressure reaches the upper pressure limit set by the regulator system when the vapor pump P1 is stopped. This is the complete cycle of a regulator, then the entire fire protection system at the state regulator. When the pressure drops to P2 leak in the system, magnetic level gauge detects the tank if the water level dropped, when the water level drops below the set lower limit of M2, the regulator pump system (B1 or B2) starts automatically, to water in the system, the water level up to the limit set by the system M1, the pump stops. (If the water tank during the pressure is too high, that is higher than the upper pressure limit set by the regulator system, when the solenoid valve opens automatically D2 pressure tank relief to protect the water up to the level set), If at this time the system pressure is lower than the limit set under pressure in the system, then the steam pump starts automatically qi into the tank, the pressure has been up to the upper limit set by the system when the steam pump P1 is stopped, and so forth in order to ensure regulation system runs lie within the set level (M1 ~ M2) and pressure (P1 ~ P2) range, to achieve the purpose of regulation. Third, the cylinder system: Cylinder group with only N cylinders, each cylinder is connected through a pipe with a pipe DN25, DN25 pipe and connected to the top of the pressure tank, piping off D1 controlled by a solenoid valve, gas bottle pressure 12Mpa ~ 15Mpa, the outlet pressure is set to the lower pressure system following P4 = P3-0.02Mpa. Usually cylinders system has been in a dormant state, when the fire broke out to work. Engineering work when there is a fire occurs, the system pressure regulator sharp decline, down to the moment when the P4, the solenoid valve cylinder group D1 open, high-pressure gas cylinders group quickly hit the pressure tank, the pressure inside the tank quick hit of the fire water pipe, in order to ensure water supply emergency fire 10 minutes. Fourth, the steam pump system: Gas top pressure fire water supply equipment system can be set for each one the size of the vapor pump or a large steam pumps (2 gasoline pump is a preparation of a use). Including large steam pump usually is dormant, when only a small gasoline pump fails, it just started. Usually it is from the regulator protection. Small steam pump usually used only for regulation, because the regulator process gas consumption is very small, so the big fire system to be set up and a small two steam pumps, small system is located a steam pump. Steam pump system outlet pipe and the top of the pressure tank is connected to each outlet each equipped with a steam pump check valve to ensure that regulation of gas and water will not flow back to the steam inside the pump. When the stabilizing system pressure drops to the set limit P2, a small air pump to start, to the regulator system and pipeline pressure, until the pressure reaches the upper limit set value P1 when the pump is stopped (control range P1-P2 = 0.05Mpa, P2-P3 = 0.02Mpa), when a small air pump failure or a sharp decline in pressure to P3, the big pump start to complete the regulation process. So again run to ensure that the regulator system within the set pressure range, reaching the size of the backup pump and the purpose of regulation. When the fire accident, fire and sprinkler system piping open, then quickly stabilizing system pressure drop, when the system is reduced to the following namely P3 P4, the solenoid valve D1 quickly open the gas cylinder system immediately started quickly to the high-pressure gas instant increased pressure within the pressure tank, when the high pressure gas system piping the water quickly into the fire, to ensure water for 10 minutes of the emergency fire quickly entered the fire system, fire emergency water to achieve the purpose, to ensure property and personal safety. In order to prevent the gas from entering the pipeline fire, ensure safe pipeline fire, the system can be installed at the exit of a pneumatic valve pressure tank fire, usually in the pipeline long and very complicated case of using. When the water level reaches the bottom of the pressure tank, in order to ensure gas does not enter the fire protection piping systems, pressure tank bottom outlet valve has a start. When the water reaches the bottom of the tank above 250mm (M3 = 50mm reach the bottom of magnetic flap), then controlled by the control point on the level gauge magnetic flap valve D3 is open, control is started quickly close the valve to ensure that the gas is not entered the fire pipeline system. Eight, overpressure safety measures: When the control system malfunction or pressure tank outlet start valve closed, to prevent the system pressure is too high, the vapor pump has a pressure switch in the pipeline with a safety valve, pressure limiting switch guarantee up to a certain pressure pump is stopped, and the valve is in the pressure reaches a certain value, the pressure relief valve opens, the above can guarantee the security and piping systems. Prevent water entering the steam pump and cylinder system measures: 1. When the tank water level reaches the set upper limit M1, magnetic level gauge control the pump stops. 2. When the electrical system is out of control, for insurance, gas top pressure fire water supply equipment can be regulated in the outlet of the pump into the tank outlet to install a hydraulic float valve, when the water level exceeds the upper limit of the water tank when the M1 regulator pump outlet line shut down immediately, the water level in the tank that is stuck at 200mm below the top of the water level no higher, in order to ensure the fire water does not enter the gas pipeline system and cylinders. Ten, pressure setting: pump stops P1 P1-P2 = 0.05Mpa small air pump starts P2 P2-P3 = 0.02Mpa stop large pump P3 P3-P4 = 0.02Mpa open solenoid valve D1 D2 P4 = P3-0.02Mpa solenoid valve opens P5 = P1 + 0.02Mpa open solenoid valve D3 M3 = 50mm Eleven, tank water level settings: M1 stop pump water high water level (manual setting) start the pump low water level M2 (manually set) to close valve M3 = 50mm (Artificial setting) Twelve set wiring table: electrical contacts 1 (P1-P2) --- take a small air pump pressure gauge 2 (P2-P3) --- take a small air pump pressure gauge 3 ( P4) --- connection D1 pressure gauge 4 (P5) --- pick D2