09-08-27**Question——(Participation rewards available)
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The last edit to this post was made by jia717 on 2009-8-26 at 23:10. Fill-in-the-blank questions: 1. The theoretical basis for calculating the strength of heat exchanger tube sheets in GB151-1999 is to consider _______ as an elastic support, with the tube sheet acting as a _____ placed on this elastic foundation; the stress on the tube sheet is then determined based on the magnitude of the loads, the stiffness of ________, and the conditions of the surrounding supports. 2. The welding joint coefficient φ shall be determined based on ________ and the length ratio of non-destructive testing. This question was provided by member luhongtai; the provider should pay close attention to it. The purpose of this* topic is to help everyone review some basic theoretical knowledge, gain new insights by reviewing what has been learned before, discuss and gain a deeper understanding of standards or specifications, as well as address specific issues encountered in practice. This enables us to learn together and improve together; we welcome all friends to participate actively. If you have good *questions, you can also provide them to us; we will offer certain rewards to those who provide them. For more details, please refer to the top post in the heat exchange forum titled “Special Thread for Collecting Technical Questions and Answers Related to the Heat Exchange Area”, with the link: http://bbs.hcbbs.com/thread-526242-1-1.html. Note: 1. For fill-in-the-blank, multiple-choice, and true/false questions, please reply using the hidden format. Rewards will be given to those who answer correctly; those who do not use the hidden format or edit their replies will not receive any rewards. Please cooperate actively. 2. For multiple accounts under the same IP, only the first response counting as participation is valid.
1. The theoretical basis for calculating the strength of heat exchanger tube sheets in GB151-1999 is to consider the tube bundle as an elastic support, with the tube sheet acting as a circular plate placed on this elastic foundation; the stress in the tube sheet is then determined based on the magnitude of the loads, the stiffness of the tube bundle, and the conditions of the surrounding supports. 2. The welding joint coefficient φ shall be determined based on the form of the welding joints in the compression members and the length proportion for non-destructive testing
1. Tube bundle, circular plate, tube bundle 2. Welded joint type
1. The theoretical basis for calculating the strength of heat exchanger tube sheets in GB151-1999 is to consider the __tube bundle__ as an elastic support, with the tube sheet acting as a __circular plate__ placed on this elastic foundation; the stress in the tube sheet is then determined based on the magnitude of the loads, the stiffness of the __tube bundle__, and the conditions of the surrounding supports. 2. The welding joint coefficient φ shall be determined based on the welding joint configuration of the ____compressed member____ and the length proportion of non-destructive testing.
Weld joint types for tube bundles, plates, and pressurized components of tube bundles
1. The theoretical basis for calculating the strength of the tube sheet is to consider the tube bundle as an elastic support, with the tube sheet acting as a circular plate placed on this elastic foundation; the stress in the tube sheet is then determined based on the magnitude of the loads, the stiffness of the tube bundle, and the conditions of the surrounding supports. 2. The welding joint coefficient φ shall be determined based on the form of the welding joints in the compression members and the length proportion for non-destructive testing
1. Tube bundle； disk ； Tube bundle 2. Weld joint type
1. The theoretical basis for calculating the strength of heat exchanger tube sheets in GB151-1999 is to consider the tube bundle as an elastic support, with the tube sheet acting as a circular plate placed on this elastic foundation; the stress on the tube sheet is then determined based on the magnitude of the loads, the stiffness of the tube bundle, and the conditions of the surrounding supports. 2. The welding joint coefficient φ shall be determined based on the form of the welding joints in the compression members and the length proportion for non-destructive testing
1: Tube bundle, circular plate, tube bundle 2: Welding joint type of the pressure-bearing element
1. Tube bundles, circular plates, tube bundles 2. Welding joint types of pressure-bearing components
1. The theoretical basis for calculating the strength of heat exchanger tube sheets in GB151-1999 is to consider the tube bundle as an elastic support, with the tube sheet acting as a circular plate placed on this elastic foundation; the stress in the tube sheet is then determined based on the magnitude of the loads, the stiffness of the tube bundle, and the conditions of the surrounding supports. 2. The welding joint coefficient φ shall be determined based on the form of the welding joints in the compression members and the length proportion for non-destructive testing