What is the specific requirement for the pressure vessel to install the safety valve
Is very comprehensive, relevant regulations, can be found on the net, can see the rules of the safety technology safety valve, pressure vessels periodical inspection procedures, steam boiler safety technology supervision procedures
The safety valve shall be installed directly in the gas phase space above the pressure vessel level, or in the pipe connected to the gas phase of the pressure vessel; 2, pressure vessel and safety valve hole is the connection between the pipe and pipe fittings, the cross-sectional area shall not be less than the imported sectional area of the relief valve, the takeover shall be short and straight as far as possible; 3 a joint, pressure vessel, furnish when two or more than two relief valve, the connection interface entrance sectional area, should be at least equal to the sum of the relief valve import cross-sectional area; No cut-off valve between safety valve and pressure vessel; The new safety valve shall be calibrated to be installed.
Above, please speak "the relief valve should be installed vertically, and should be installed in the liquid level above the gas phase space part of pressure vessel, or installed in the gas phase with pressure vessel space connected to the line." "Or" is the pipe that is attached to the gas phase of the pressure vessel? "does it say that it can be installed on the air outlet's pipe or air outlet?
Safety valve installation requirements The requirements for the relief valve installation are as follows: The safety valve shall be installed vertically and shall be installed in the gas phase space above the pressure vessel, or in the pipe connected to the gas phase of the pressure vessel. The cross-section of the connection pipe between the pressure vessel and the relief valve shall not be less than the inlet area of the relief valve and shall be taken as short and straight as possible. 3 a joint, pressure vessel, furnish two or more than two relief valve, the connection interface entrance area, should be at least equal to the sum of safety valve import cross-sectional area. The safety valve and the pressure vessel are not normally installed as cut-off valves. To implement an online check for the relief valve, a blasting device can be installed between the relief valve and the pressure vessel. To dress up for extreme toxicity, high, moderate harm medium, flammable medium, corrosion, viscous medium or valuable medium pressure vessel, in order to facilitate cleaning and relief valve replacement, after use the unit in charge of pressure vessel safety technology without the approval of the head and develop reliable preventive measures, to the relief valve (blasting device) installing globe valves with pressure vessel. When the pressure vessel normally runs, the stop valve must be fully open (with lead seal or lock). The structure and size of the stop valve shall not interfere with the safety discharge of the relief valve. Safety valve installation position should facilitate inspection and maintenance.
