Patents by Inventor Qinwei Yu

Qinwei Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11396444
    Abstract: The present disclosure relates to a foldable truss boom section, a truss boom and a crane. The foldable truss boom section includes: two chords that do not intersect with each other; at least two slideways fixedly disposed on each of the two chords, wherein each of the at least two slideways has at least two slideway fixing points; and at least two long web members connecting the two chords, wherein each of the at least two long web members has at least one sliding end which is slidable along the slideway and connected to the slideway at one of the at least two slideway fixing points, so that a cross-section state of the truss boom section is changeable.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: July 26, 2022
    Assignee: XUZHOU CONSTRUCTION MACHINERY GROUP CO., LTD.
    Inventors: Dandan Cui, Li Sun, Qinwei Yu, Yong Yang, Fahao Zhu
  • Publication number: 20210253408
    Abstract: The present disclosure relates to a foldable truss boom section, a truss boom and a crane. The foldable truss boom section includes: two chords that do not intersect with each other; at least two slideways fixedly disposed on each of the two chords, wherein each of the at least two slideways has at least two slideway fixing points; and at least two long web members connecting the two chords, wherein each of the at least two long web members has at least one sliding end which is slidable along the slideway and connected to the slideway at one of the at least two slideway fixing points, so that a cross-section state of the truss boom section is changeable.
    Type: Application
    Filed: July 3, 2019
    Publication date: August 19, 2021
    Inventors: Dandan CUI, Li SUN, Qinwei YU, Yong YANG, Fahao ZHU
  • Patent number: 10266541
    Abstract: Disclosed are a joint production method and device for aziridine, piperazine and triethylenediamine. The method comprises: reaction 1, preparing piperazine and triethylenediamine by taking ethanol amine as a raw material under the existence of a cyclamine catalyst; reaction 2, preparing aziridine by taking the ethanol amine as the raw material under the existence of a catalyst B; and taking heat released in the reaction 1 as a heat source of heat absorption in the reaction 2. The device comprises a reactor 1 for carrying out the reaction 1 and the heat exchange between reaction materials of the reaction 1 and the raw material of the reaction 2 and a reactor 2 for carrying out the reaction 2.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: April 23, 2019
    Assignee: XI'AN MODERN CHEMISTRY RESEARCH INSTITUTE
    Inventors: Jianming Yang, Suning Mei, Qinwei Yu, Feng Hui, Jun Yuan, Wei Wang, Yani Li, Weiqiang Wang, Jian Lu
  • Publication number: 20180093993
    Abstract: Disclosed are a joint production method and device for aziridine, piperazine and triethylenediamine. The method comprises: reaction 1, preparing piperazine and triethylenediamine by taking ethanol amine as a raw material under the existence of a cyclamine catalyst; reaction 2, preparing aziridine by taking the ethanol amine as the raw material under the existence of a catalyst B; and taking heat released in the reaction 1 as a heat source of heat absorption in the reaction 2. The device comprises a reactor 1 for carrying out the reaction 1 and the heat exchange between reaction materials of the reaction 1 and the raw material of the reaction 2 and a reactor 2 for carrying out the reaction 2.
    Type: Application
    Filed: November 17, 2017
    Publication date: April 5, 2018
    Inventors: Jianming Yang, Suning Mei, Qinwei Yu, Feng Hui, Jun Yuan, Wei Wang, Yani Li, Weiqiang Wang, Jian Lu
  • Patent number: 9920008
    Abstract: The present invention relates to a catalyst for synthesizing ethylenimine as well as a preparation method and application thereof. The related catalyst comprises a carrier and metal ions loaded on the carrier; the carrier is a composite oxide comprising titanium, silicon and phosphorus elements; the metal ions are magnesium ions, iron ions and cesium ions; the molar ratio of the magnesium ions to the iron ions to the cesium ions is (1-10):1:0.1; the mass of all metal ions is 0.5-10 percent of that of the carrier. In the related preparation method, a catalyst precursor is roasted at the temperature of 350-650° C., so that the catalyst is obtained; the catalyst precursor is the mixture of the carrier, soluble salt of magnesium, soluble salt of iron and soluble salt of cesium. The present invention also provides the application of the catalyst to synthesis of the ethylenimine by using amino alcohol as the raw material. Compared with a common catalyst which has the requirement on the temperature of over 400° C.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: March 20, 2018
    Assignee: XI'AN MODERN CHEMISTRY RESEARCH INSTITUTE
    Inventors: Jianming Yang, Jian Lu, Suning Mei, Qinwei Yu, Feng Hui, Yani Li, Fengwei Zhao, Weiqiang Wang, Wei Wang
  • Patent number: 9850250
    Abstract: Disclosed are a joint production method and device for aziridine, piperazine and triethylenediamine. The method comprises: reaction 1, preparing piperazine and triethylenediamine by taking ethanol amine as a raw material under the existence of a cyclamine catalyst; reaction 2, preparing aziridine by taking the ethanol amine as the raw material under the existence of a catalyst B; and taking heat released in the reaction 1 as a heat source of heat absorption in the reaction 2. The device comprises a reactor 1 for carrying out the reaction 1 and the heat exchange between reaction materials of the reaction 1 and the raw material of the reaction 2 and a reactor 2 for carrying out the reaction 2.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: December 26, 2017
    Assignee: XI'AN MODERN CHEMISTRY RESEARCH INSTITUTE
    Inventors: Jianming Yang, Suning Mei, Qinwei Yu, Feng Hui, Jun Yuan, Wei Wang, Yani Li, Weiqiang Wang, Jian Lu
  • Publication number: 20170022207
    Abstract: Disclosed are a joint production method and device for aziridine, piperazine and triethylenediamine. The method comprises: reaction 1, preparing piperazine and triethylenediamine by taking ethanol amine as a raw material under the existence of a cyclamine catalyst; reaction 2, preparing aziridine by taking the ethanol amine as the raw material under the existence of a catalyst B; and taking heat released in the reaction 1 as a heat source of heat absorption in the reaction 2. The device comprises a reactor 1 for carrying out the reaction 1 and the heat exchange between reaction materials of the reaction 1 and the raw material of the reaction 2 and a reactor 2 for carrying out the reaction 2.
    Type: Application
    Filed: September 5, 2014
    Publication date: January 26, 2017
    Inventors: Jianming Yang, Suning Mei, Qinwei Yu, Feng Hui, Jun Yuan, Wei Wang, Yani Li, Weiqiang Wang, Jian Lu
  • Publication number: 20160318863
    Abstract: The present invention relates to a catalyst for synthesizing ethylenimine as well as a preparation method and application thereof. The related catalyst comprises a carrier and metal ions loaded on the carrier; the carrier is a composite oxide comprising titanium, silicon and phosphorus elements; the metal ions are magnesium ions, iron ions and cesium ions; the molar ratio of the magnesium ions to the iron ions to the cesium ions is (1-10):1:0.1; the mass of all metal ions is 0.5-10 percent of that of the carrier. In the related preparation method, a catalyst precursor is roasted at the temperature of 350-650° C., so that the catalyst is obtained; the catalyst precursor is the mixture of the carrier, soluble salt of magnesium, soluble salt of iron and soluble salt of cesium. The present invention also provides the application of the catalyst to synthesis of the ethylenimine by using amino alcohol as the raw material. Compared with a common catalyst which has the requirement on the temperature of over 400° C.
    Type: Application
    Filed: September 5, 2014
    Publication date: November 3, 2016
    Applicant: XI'AN MODERN CHEMISTRY RESEARCH INSTITUTE
    Inventors: Jianming Yang, Jian Lu, Suning Mei, Qinwei Yu, Feng Hui, Yani Li, Fengwei Zhao, Weiqiang Wang, Wei Wang