Heat transfer enhancement pipe as well as cracking furnace and atmospheric and vacuum heating furnace including the same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11976891
APP PUB NO 20200326141A1
SERIAL NO

16758155

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

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 (1) includes a pipe body (10) of tubular shape having an inlet (100) for entering of a fluid and an outlet (101) for said fluid to flow out; internal wall of the pipe body (10) is provided with a fin (11) protruding towards interior of the pipe body (10), the fin (11) spirally extends in an axial direction of the pipe body (10), wherein a height of the fin (11) gradually increases from one end in at least a part extension of the fin. The heat transfer enhancement pipe can reduce thermal stress of itself, thereby increasing service life of the heat transfer enhancement pipe.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • CHINA PETROLEUM & CHEMICAL CORPORATION; BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CHINA PETROLEUM & CHEMICAL CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Du, Zhiguo Beijing, CN 10 14
Guo, Jinghang Beijing, CN 3 2
Li, Xiaofeng Beijing, CN 254 3569
Liu, Junjie Beijing, CN 117 1564
Shen, Dongfa Beijing, CN 3 2
Shi, Ying Beijing, CN 116 1715
Wang, Guoqing Beijing, CN 70 263
Yang, Shasha Beijing, CN 6 2
Yang, Shifang Beijing, CN 13 144
Zhang, Lijun Beijing, CN 174 2085
Zhang, Yonggang Beijing, CN 29 55
Zhang, Zhaobin Beijing, CN 42 42
Zhou, Cong Beijing, CN 42 94

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Nov 7, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Nov 7, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 7, 2035
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00