Heat exchanger tips No. 0220 (prizes for correct answers)
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Multiple choice questions: 1. The GB151 standard stipulates that the effective thickness of the tube sheet refers to the thickness of the tube sheet at the bottom of the dividing plate groove of the pipe section minus the following thickness ( ). A) The part where the tube side corrosion allowance exceeds the depth of the tube side partition plate groove B) The larger value of the shell side corrosion allowance and the structural groove depth of the tube sheet on the shell side C) The thickness of both A and B 116. 2. When the tube sheet and heat exchange tube are welded together, the minimum thickness of the tube sheet should meet the requirements of structural design and manufacturing, and ≥ ( ). A) 10mm B) 12mm C) 15mm Each question is worth 3 points. correct answer: 1.C 2.B
My answer is 1,A,2,B
1. The GB151 standard stipulates that the effective thickness of the tube sheet refers to the thickness of the tube sheet at the bottom of the pipe split partition groove minus the following thickness (C). A) The part where the tube side corrosion allowance exceeds the tube side partition groove depth B) The larger value of the shell side corrosion allowance and the structural groove depth of the tube sheet on the shell side C) The thickness of both A and B 116. 2. When the tube sheet and heat exchange tube are welded together, the minimum thickness of the tube sheet should meet the requirements of structural design and manufacturing, and ≥ (B). A) 10mm B) 12mm C) 15mm This post was last edited by Xuehua on 2009-2-20 08:35 ]
1. The GB151 standard stipulates that the effective thickness of the tube sheet refers to the thickness of the tube sheet at the bottom of the dividing plate groove of the pipe section minus the following thickness (C). 2. When the tube plate and heat exchange tube are connected by welding, the minimum thickness of the tube plate should meet the requirements of structural design and manufacturing, and ≥ (B). A) 10mm B) 12mm C) 15mm
1. The GB151 standard stipulates that the effective thickness of the tube sheet refers to the thickness of the tube sheet at the bottom of the pipe split partition groove minus the following thickness (C). A) The part where the tube side corrosion allowance exceeds the tube side partition groove depth B) The larger value of the shell side corrosion allowance and the structural groove depth of the tube sheet on the shell side C) The thickness of both A and B 116. 2. When the tube sheet and heat exchange tube are welded together, the minimum thickness of the tube sheet should meet the requirements of structural design and manufacturing, and ≥ (B). A) 10mm B) 12mm C) 15mm
1. The GB151 standard stipulates that the effective thickness of the tube sheet refers to the thickness of the tube sheet at the bottom of the pipe split partition groove minus the following thickness (C). A) The part where the tube side corrosion allowance exceeds the tube side partition groove depth B) The larger value of the shell side corrosion allowance and the structural groove depth of the tube sheet on the shell side C) The thickness of both A and B 116. 2. When the tube sheet and heat exchange tube are welded together, the minimum thickness of the tube sheet should meet the requirements of structural design and manufacturing, and ≥ (B). A) 10mm B) 12mm C) 15mm
1. The GB151 standard stipulates that the effective thickness of the tube sheet refers to the thickness of the tube sheet at the bottom of the pipe split partition groove minus the following thickness (C) The thickness of A and B). A) The part where the tube side corrosion allowance exceeds the depth of the tube side partition plate groove B) The larger value of the shell side corrosion allowance and the structural groove depth of the tube plate on the shell side C) The thickness of both A and B 116. 2. When the tube plate and heat exchange tube are welded together, the minimum thickness of the tube plate should meet the requirements of structural design and manufacturing, and ≥ (B) 12mm). A) 10mm B) 12mm C) 15mm
1. The GB151 standard stipulates that the effective thickness of the tube sheet refers to the thickness of the tube sheet at the bottom of the pipe split partition groove minus the following thickness (C). A) The part where the tube side corrosion allowance exceeds the tube side partition groove depth B) The larger value of the shell side corrosion allowance and the structural groove depth of the tube sheet on the shell side C) The thickness of both A and B 116. 2. When the tube sheet and heat exchange tube are welded together, the minimum thickness of the tube sheet should meet the requirements of structural design and manufacturing, and ≥ (B). A) 10mm B) 12mm C) 15mm
1. The GB151 standard stipulates that the effective thickness of the tube sheet refers to the thickness of the tube sheet at the bottom of the pipe split partition groove minus the following thickness (C). A) The part where the tube side corrosion allowance exceeds the depth of the tube side partition plate groove B) The larger value of the shell side corrosion allowance and the structural groove depth of the tube plate on the shell side C) The thickness of both A and B 116. 2. When the tube plate and heat exchange tube are welded together, the minimum thickness of the tube plate should meet the requirements of structural design and manufacturing, and ≥ (B). A) 10mm B) 12mm C) 15mm
1. The GB151 standard stipulates that the effective thickness of the tube sheet refers to the thickness of the tube sheet at the bottom of the pipe split partition groove minus the following thickness (C). A) The part where the tube side corrosion allowance exceeds the tube side partition groove depth B) The larger value of the shell side corrosion allowance and the structural groove depth of the tube sheet on the shell side C) The thickness of both A and B 116. 2. When the tube sheet and heat exchange tube are welded together, the minimum thickness of the tube sheet should meet the requirements of structural design and manufacturing, and ≥ (B). A) 10mm B) 12mm C) 15mm
1. The GB151 standard stipulates that the effective thickness of the tube sheet refers to the thickness of the tube sheet at the bottom of the pipe split partition groove minus the following thickness (C). A) The part where the tube side corrosion allowance exceeds the depth of the tube side partition plate groove B) The larger value of the shell side corrosion allowance and the structural groove depth of the tube plate on the shell side C) The thickness of both A and B 116. 2. When the tube plate and heat exchange tube are welded together, the minimum thickness of the tube plate should meet the requirements of structural design and manufacturing, and ≥ (B). A) 10mm B) 12mm C) 15mm
my answer: 1.C 2.B
1. The GB151 standard stipulates that the effective thickness of the tube sheet refers to the thickness of the tube sheet at the bottom of the pipe split partition groove minus the following thickness (C). 2. When the tube plate and heat exchange tube are connected by welding, the minimum thickness of the tube plate should meet the requirements of structural design and manufacturing, and ≥ (B).