Supply of ammonia as a refrigerant refrigeration equipment

In cold storage equipment maintenance, cold storage equipment modification and equipment normal use conditions, in addition to freezing the operating personnel, production personnel and other related personnel, should have the relevant knowledge, the smell in the air with a pungent odor, the first emergency evacuation and evacuation stopped : A small leak, the initial isolation 30m, downwind evacuation daytime 100m, night 200m; large spills, initial isolation 150m, downwind evacuation daytime 800m, night 2300m. First, ammonia leakage accident occurred ammonia compressor 1, ammonia compressor ammonia leak occurred after the accident, the first cut off the compressor power, immediately close the exhaust valve, intake valve (two-stage ammonia compressor should also close the second exhaust valve and two suction valve) If you are refueling, fuel valve should be closed. 2. Run the machine room should be completely stopped, the operator found leaking ammonia compressor shutdown immediately and according to their location when you close the way to the nearest accident aircraft running off the machine. 3. ammonia leakage accident larger machines can not be close to the accident, should the outdoor shutdown, closed immediately after the shutdown of all oil separator ammonia inlet valve and low barrel and connected to the accident inspiratory valve. 4, rapid opening all accidents ammonia compressor room exhaust fan. 5, in dealing with the accident, with a hose spray water leak ammonia parts of ammonia and water soluble, pay attention to water protection ammonia refrigeration compressor motors. Second, pressure vessels leak ammonia incident handling such incidents, the principle is the first to take control of accidents is no longer expanding, and then take measures to accidents vessel disconnected from the system, turn off the device all valves leak ammonia serious can not be taken off the device when close The device is coupled with other devices valve collusion with ammonia water washout water leak site, liquid ammonia treatment promptly emptied containers. Belong to such equipment are: ammonia oil separator, a condenser, high pressure fluid reservoir barrel, the cold, drain barrel, oil collector, put the air filter, low pressure liquid storage barrels. (A) an oil separator ammonia leak ammonia oil separator after ammonia leak ammonia compressor running operation, immediately turn off the compressor power, quickly closing the oil separator of the valve, the intake valve, the liquid valve, drain valve and closing the intake valve condenser, compressor to the oil separator vent ammonia. (Ii) a condenser leak ammonia (vertical, horizontal, evaporative condensers) a condenser leak ammonia compressor is running, immediately turn off the compressor power, quickly shut down all high pressure equalizing valve tub and all other Pressure condenser, air release valve, then close the condenser inlet valve, the valve. Accidents can be reduced when the condenser process allows. (C) high pressure storage barrels leaking liquid ammonia high pressure storage barrel after ammonia leak, immediately turn off the intake valve high pressure liquid storage barrels, all valve, the valve, drain valve and other related valves. Such as ammonia compressor is running, quickly cut off the compressor power, in the conditions and circumstances permit, immediately open container associated with a low pressure vacuum valves, draining, to minimize the loss of liquid ammonia leakage, when the high-pressure reservoir barrel When the pressure is consistent with the low pressure, pressure should be closed drain valve. (D) intercooler intercooler ammonia leak after leak ammonia, when the compressor is running, immediately turn off the machine power, turn off the compressor discharge valve primary and secondary intake valve and communicating with other devices valve, while opening the drain valve draining oil discharge pressure. After (v) low pressure liquid storage barrels barrels leaking ammonia leak ammonia low-pressure accumulator, the compressor when the system is in operation, immediately turn off the compressor power, turn off the compressor suction valve, while closing the low pressure liquid reservoir barrel inlet, outlet are liquid, put oil and other related valve, open ammonia pump into the liquid, the liquid ammonia pump valve and the low pressure liquid reservoir barrel of liquid ammonia evaporator to the Treasury, to be low-pressure accumulator barrel after closing without liquid ammonia pump inlet valve. (Vi) the discharge barrel drain barrel leak ammonia leak ammonia (in red cream, pressing, draining, put the oil work), you should immediately turn off the tub drain all other devices connected to the valve, according to the tub drain Level number processing. As less fluid volume, open decompression valve; as liquid volume when more should be emptied as soon as the barrel, reducing the amount of leakage of ammonia. (Vii) the oil trap set when ammonia leak oil leak ammonia, or put oil in the process, should be immediately shut down the oil collector into the oil and valve. (Viii) the discharge air is leaking ammonia discharge air is leaking ammonia, should be closed immediately mixed gas inlet valve, the liquid valve, reflux valve, an evaporator return valve. (Ix) equipment broken glass, oil level indicator tube rupture leaking ammonia plant, oil level indicator of liquid ammonia leak, when the upper and lower side of the ball failure, immediately turn on the instructions, a lower side of the ball angle valve, as early as possible to control a large number of liquid ammonia leakage. (X) ammonia leak ammonia ammonia bottle bottle belonging mobile pressure vessel, ammonia bottle must conduct a regular inspection every two years, using 12 years should be scrapped. If found sidewall cracks, severe corrosion, dents, drum kits, deformation and other defects and without regular inspections should be prohibited. In the process of adding ammonia leak ammonia, ammonia bottle should immediately turn off the valve, plus add ammonia valve ammonia station, with the washout pouring ammonia leak site, quickly pushed away the bottle of ammonia plus ammonium scene. Third, the evaporator drain ammonia leak ammonia evaporator library includes chillers, wall pipes, the top row of tubes, principles: should be closed immediately evaporator liquid supply valves, back valves, heat ammonia valve, drain valve, and promptly emptied the evaporator liquid ammonia. As in red cream during, immediately turn red cream hot ammonia valve, close the drain valve, open the decompression valve back. As the cooling process in the warehouse, it should immediately turn off the evaporator liquid supply valve, ammonia pump system to stop running. OK ammonia leak site, do a temporary treatment, play cards to take control card fastening pipe to reduce the amount of leakage of ammonia. And turn on the exhaust fan forced ventilation, minimizing the ammonia concentration of the Treasury. Clear ammonia evaporator, in conditions, environmental permit, may take appropriate pressure, red cream with hot ammonia method, the liquid ammonia evaporator drain back into the drain barrel, reducing fluid loss and warehouse ammonia air pollution. Fourth, the valve leak ammonia was found after ammonia leak ammonia valve, should quickly close the valve on both sides of the recent accident control valve, and valve leakage by blocking special equipment plugging. If the valve leak ammonia container, the valve should be closed before the recent leak valve, close the inlet of the container, the intake valve and so on. When conditions, environmental permits, quickly open the relevant valve to the low pressure drain system. In dealing with spills, should open the exhaust fan for ventilation. V. ammonia pipeline leak is found after a pipeline leak ammonia, should be quickly shut down the pipeline on both sides of the recent accident control valve, cut off the source of the ammonia solution. And take temporary control card playing approach, sealing plugging mouth and crack, and then evacuated to the accident site. Six, plus ammonia means ammonia leak (plus ammonia stations) in the process of adding ammonia, add ammonia leak ammonia plants, should be quickly shut recent addition of ammonia means ammonia bottle valves and the valve. Seven of accidental discharge when handling ammonia leak ammonia leak ammonia equipment such as containers, a container of liquid ammonia in more cases, the container must be liquid ammonia emissions into the other container or discharged. Liquid ammonia emissions into the system of emissions and emissions to the outside of the system. Releases to the system: General should take place tubing and drain pipe discharge apparatus, the ammonia leak ammonia liquid discharge container to lower pressure inside other containers. Outside the exhaust system, in exceptional cases, to reduce the liquid ammonia leakage accident equipment, to avoid casualties occurred, was put through a series of ammonia and pressure hoses tubing equipment into the pool in order to ensure safety. When ammonia solution or ammonia emissions to the outside world to pay attention to the valve not to open too big, too fast, to prevent the hose connection off, causing the accident.