理论知识考核内容.doc

理论知识考核内容Annex 1Theoretical knowledge assessment contentI. Basic Knowledge(1) definition, functi on and work in g principle of safety valve ・(two) the term of safety valve1. nominal diameter, nominal pressure and working pressure:2. applicable temperature, applicable medium, workingtemperature and working medium;3. , the opening height, flow area (throat area), discharge area, curtain area, channel diameter (throat diameter);4. theoretical displacement, actual displacement, rated displacement, equivalent calculation, displacement, displacement coefficient, rated displacement coefficient:5. setting pressure, discharge pressure, back seat pressure, seal test pressure, back pressure (discharge back pressure and additional back pressure);6. allow setting pressure deviation;7. over pressure, opening and closing pressure difference;8. cold test differential pressure;9. frequency hopping, flutter, and blocking・(three) the basic requirements and mechanical characteristics of the sealing, opening, discharging and back seat of the safety valve.(four) by using the media, nominal pressure, temperature, connection mode, structure, sealing materials, working principle, operating characteristic, opening height, pressure balance valve, on loading classification knowledge of safety- valve.(five) the structural features and selection conditions of spring type (full closed, semi closed, open type), lever type, static weight type, pulse type (pilot type) and other safety- valves ・(six) safety valve type programming method・Two 、 safety valve design and manufacturing knowledgeSafety valve shell, valve identification, seat, spring and other key parts of the material selection principle and the spring pressure level concept・(two) the manufacturing process of key parts and components of the safety valve・ (three) casting, forging, welding process and requirements of shell.(four) machining accuracy and influence of parts・(five) sealing surface surfacing, surface nondestructive testing, machining and grinding methods and requirements・(six) the manufacturing process, stability and performance test of spring・(seven) safety valve assembly procedures and matters needing attention・(eight) the contents and methods of the safety valve factorytest ・(nine) the whole performance (type) test con tent of the safety- valve.(ten) safety valve product identification, seals, nameplates and other knowledge・(eleven) safety valve products should be shipped with the information.(twelve) safety valve design, manufacturing, testing, the main standards and related requirements・Three 、 safety valve installation knowledge (1) requirements and requirements for installation of safety valves on all types of equipment.(two) attention should be paid to the installation of safety valves on all types of equipment・Four 、 safety valve operation, maintenance and management knowledge(1) safety valve operation, maintenance and management knowledge;1. the contents of the safety valve file should include・2. inspection of safety valve inspection.3. regular inspection and regular discharge of safety valve・4. operation record of safety valve・(two) safety valve failure, reason and treatment1. , safety valve leakage, movement is not flexible, performance (set pressure, emission pressure, back seat pressure and other performance indicators fail to meet the requirements of the causes and hazards;2. frequency hopping and flutter and their causes and hazards;3. handling of faults and matters needing attention.Five 、 safety valve maintenance knowledge(I) classification of safety valve inspection・(two) preparation of safety valve before servicing (including task release, spare parts and materials, tools, record forms, etc.)・(three) safety valve overhaul procedures and matters needing attention.(four) methods of disassembly, cleaning, inspection and recording of parts after disassembly.(five) repair method of safety valve1. replacement of spring and other parts;2. sealing surface grinding and other repair methods;3. stem, guide and other methods of repair;(six) safety valve re assembly and matters needing attention.Six 、 safety valve calibration knowledge(1) the purpose, significance and verification items of the calibration of safety valves・(two) determination principle of setting pressure of safety valve.(three) safety valve calibration mode, scope of application and characteristics;1. the equipment composition, working principle, characteristics and requirements of check table verification method, check operation procedure and check method and matters needing attention;2. use boiler, pressure vessel, pressure pipeline medium pressure on-site verification method characteristics, calibration procedures and calibration methods and matters needing attention;3. the equipment composition, characteristics, working principle, calibration operation procedures and calibrati。