Problems in the structural design of pressure vessels

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Structural design: The main problems in the structural design of pressure vessels include: 01 For jacketed vessels, there is no anti-impact baffle at the steam inlet, and no exhaust port is provided at the upper part of the jacket； 02 Regarding the heat exchanger structure: (1) The tube bank partition does not have drain holes ； No anti-impact baffle is provided at the shell-side steam inlet ； ⑵There is no drain port at the bottom of the baffle ； The shell side of a vertical heat exchanger should be equipped with a vent and a drain port ； The tie rods are not arranged properly; there are no tie rods at the gaps in the baffle plates ； 03 In the skirt component diagram, the welding dimensions of the weld joints between the skirt and the bottom head are incomplete ； 04 For horizontal containers, the use of inward-extending nozzles at the venting ports is not conducive to gas emission; flat nozzles should be used instead ； 05 The use of flat seals for the flanges of containers holding explosive materials is unreasonable; recessed and protruding sealing surfaces should be employed instead ； 06 Long-neck butt weld flanges should not be connected directly to the head; a short section should be used instead ； 07 The fixing and sliding ends of the saddle support are not arranged properly; the fixing end of the support should be placed on the side with more external pipes ； It is unreasonable for the bolt holes in the double-support base plate to be designed as round holes; one end should be fixed (round hole) while the other end should be slidable (oval hole) ； 09 For the gasket used on the manhole of liquid ammonia storage tanks, one with an internal reinforcement ring should be selected ； 10 The distance from the centerline of the skirt exhaust pipe to the top of the skirt is too large, resulting in no effective exhaust function ； 11 The safety accessories are not fully installed ； 12 The medium is explosive, the equipment is not equipped with an electrostatic grounding plate, and the technical requirements do not specify the requirements for electrostatic grounding of the equipment ； The material used for the static ground plate is a low-alloy material, which does not meet the requirements for static grounding; stainless steel should be used instead ； 13 Containers containing explosive or highly hazardous materials and equipped with safety relief devices, but the technical requirements do not specify that \"a conduit should be installed at the outlet of the safety relief device to direct the discharged material to a safe location; it is not permitted to discharge it directly into the atmosphere\" ； 14 Mechanical stirring equipment with explosive media did not use explosion-proof motors.