SB-O3-175 hand pump Usage: hand pump and emergency shut-off valve supporting the use of liquefied petroleum gas storage station for tank or tank emergency shut-off valve in the working state, the use of this pump to achieve the performance Control the emergency shut-off valve to open or close the purpose. SB-O3-175 hand pump working principle and structure Description: Hand pump reciprocating action by the handle, the pressure increases to open the emergency shut-off valve, the medium can be passed, in case of fire or other emergency situations, the hand pump Pressure relief valve open, the hydraulic system quickly pressure relief, the emergency shut-off valve immediately closed, or the temperature rises above 75 ℃, installed in the pump or emergency shut-off valve fusible plug immediately melted to achieve automatic pressure relief wood , So that the emergency shut-off valve automatically shut down quickly. The main structure of the hand pump is suction plunger oil, into the valve, the valve and relief valve composition. The closed space formed by the plunger and the oil inlet and outlet valve is the working space of the oil pump. When the plunger moves upwards to make the volume of the working chamber change from small to large, the oil pressure is lower than the atmospheric pressure and the oil inlet valve is opened. The oil filter valve into the working chamber. When the plunger downward movement of the working chamber volume from large to small, the working chamber of the hydraulic pressure rises, the oil valve is opened, the pressure oil into the oil system for emergency shut-off valve open. Pressure relief valve is used to relieve pressure oil pressure system set up, the work required to close the pressure relief valve, the pressure relief valve in the oil system needs to open the emergency shut-off valve closed. SB-O3-175 hand pump application: the pump tank in the pump jacket body cavity, when filling the oil cap can be opened on the cover, such as oil column volume can be supplemented when not enough auxiliary fuel tank. Strength test: 10.0MPa. Sealing test: 6.0MPa. High temperature relief test: 400cc Supporting equipment: Station emergency shut-off valve BY-850H Oil accumulator BY -962 Working pressure: 2.0. ~ 6.0MPa. Maximum working pressure: 7.0MPa Oil chamber capacity: 4000cc Working medium: 13 # mechanical oil or 2 # spindle oil
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