The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2024
Filed:
Oct. 25, 2018
China Petroleum & Chemical Corporation, Beijing, CN;
Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation, Beijing, CN;
Guoqing Wang, Beijing, CN;
Junjie Liu, Beijing, CN;
Lijun Zhang, Beijing, CN;
Cong Zhou, Beijing, CN;
Zhaobin Zhang, Beijing, CN;
Shasha Yang, Beijing, CN;
Dongfa Shen, Beijing, CN;
Xiaofeng Li, Beijing, CN;
Shifang Yang, Beijing, CN;
Zhiguo Du, Beijing, CN;
Yonggang Zhang, Beijing, CN;
Ying Shi, Beijing, CN;
Jinghang Guo, Beijing, CN;
Abstract
The present invention relates to the field of fluid heat transfer, and discloses a heat transfer enhancement pipe as well as a cracking furnace and an atmospheric and vacuum heating furnace including the same. The heat transfer enhancement pipe () includes a pipe body () of tubular shape having an inlet () for entering of a fluid and an outlet () for said fluid to flow out; internal wall of the pipe body () is provided with a fin () protruding towards interior of the pipe body (), wherein the fin () has one or more fin sections extending spirally in the axial direction of the pipe body (), and each fin section has a first end surface facing the inlet () and a second end surface facing the outlet (), at least one of the first end surface and the second end surface of at least one of the rib sections is formed as a transition surface along spirally extending direction. The heat transfer enhancement pipe can reduce thermal stress of itself, thereby increasing service life of the heat transfer enhancement pipe.