173 refinery plant piping, instrumentation, and flowchart legends – worth collecting
Thread Content
I. Pipes, signal wires, pipe fittings, and other linear componentshttp://www.cadpid.com/uploads/allimg/160719/1-160G9110130538.jpg
http://www.cadpid.com/uploads/allimg/160719/1-160G9110159139.jpg
II. Valves
1. Valves
http://www.cadpid.com/uploads/allimg/160719/1-160G9110230A4.jpg
http://www.cadpid.com/uploads/allimg/160719/1-160G9110243D9.jpg
http://www.cadpid.com/uploads/allimg/160719/1-160G911025C57.jpg
Note: ① Butterfly valves for special purposes should be labeled accordingly. The labeling method is XXX-N. Here, XXX refer to BVE (electro-hydraulic actuated butterfly valve), BVA (pneumatic butterfly valve), and BVM (electric butterfly valve) respectively. For example, the notation format for an electric butterfly valve is: http://www.cadpid.com/uploads/allimg/160719/1-160G911215YE.jpg. ② Safety valves also need to be labeled. The labeling method is PSV-N. Where N is the number. For example: http://www.cadpid.com/uploads/allimg/160719/1-160G9112215B3.jpg ③ The spool valve must be labeled, using the same method as in ①. Here, XXX refer to SVE (electro-hydraulic slide valve), SVA (pneumatic slide valve), and SVM (electric slide valve) respectively. 2 Actuation types of control valves http://www.cadpid.com/uploads/allimg/160719/1-160G911051K39.jpg Note: ① For pneumatic diaphragm control valves, a status indication is required; wherein FC means the valve closes in the event of a supply air failure ； FO: Turns on in case of gas supply failure ； The position of the control valve remains unchanged (position holding) in case of a FL gas supply interruption ； When the FLC gas supply is interrupted, the position of the control valve remains unchanged (position holding); at low signal levels, the valve closes ； When the FLO gas supply is interrupted, the position of the control valve remains unchanged (position retention); at low signal levels, the valve opens ； For example, for a pneumatic control valve that should close in the event of an air supply failure, the representation is as follows: ② If it has a manual reset function, it is indicated using the link http://www.cadpid.com/uploads/allimg/160719/1-160G911223G59.jpg. The representation is as follows: http://www.cadpid.com/uploads/allimg/160719/1-160G9112252R7.jpg www.pidcad.com] III. Tower http://www.cadpid.com/uploads/allimg/160719/1-160G91106054V.jpg Note: ① represents the oil collection tank; ② represents the foam breaker; ③ represents the liquid dropping at the center of the two-flow tray; ④ represents the liquid dropping on both sides of the two-flow tray; ⑤ represents the liquid distributor; ⑥ represents the packed tower www.pidcad.com] IV. Furnace http://www.cadpid.com/uploads/allimg/160719/1-160G9110631Q7.jpg http://www.cadpid.com/uploads/allimg/160719/1-160G9110Gb41.jpg www.pidcad.com] V. Heat exchange equipment http://www.cadpid.com/uploads/allimg/160719/1-160G9110A9401.jpg http://www.cadpid.com/uploads/allimg/160719/1-160G9110KD05.jpg http://www.cadpid.com/uploads/allimg/160719/1-160G9110Q4638.jpg www.pidcad.com] VI. Containers and tanks http://www.cadpid.com/uploads/allimg/160719/1-160G9110TX91.jpg http://www.cadpid.com/uploads/allimg/160719/1-160G9110ZVG.jpg www.pidcad.com] VII. Reactor http://www.cadpid.com/uploads/allimg/160719/1-160G911092Q25.jpg www.pidcad.com] VIII. Pumps and compressors http://www.cadpid.com/uploads/allimg/160719/1-160G9110952156.jpg http://www.cadpid.com/uploads/allimg/160719/1-160G911100Q46.jpg www.pidcad.com] IX. Small-scale equipment and other machinery 1. Small-scale equipment Small-scale equipment refers to those installed along pipelines or at their ends; examples are shown below: http://www.cadpid.com/uploads/allimg/160719/1-160G9111025Q7.jpg http://www.cadpid.com/uploads/allimg/160719/1-160G9111039396.jpg 2. Other machinery http://www.cadpid.com/uploads/allimg/160719/1-160G911141YX.jpg http://www.cadpid.com/uploads/allimg/160719/1-160G9111432452.jpg http://www.cadpid.com/uploads/allimg/160719/1-160G9111453911.jpg www.pidcad.com] X. Instruments and DCS http://www.cadpid.com/uploads/allimg/160719/1-160G911152M50.jpg http://www.cadpid.com/uploads/allimg/160719/1-160G9111546364.jpg http://www.cadpid.com/uploads/allimg/160719/1-160G9111602407.jpg Note: ① Process parameters: T represents temperature, P represents pressure, F represents flow rate, and L represents liquid level. ② The diameter of the circles in the instrument diagram is 10–12 mm. This article is from pidcadde’s official website www.pidcad.com; more great content is available on the pidcadde website