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1.发明授权公开(公告)号：US10337493B2
公开(公告)日：2019-07-02
申请号：US15788783
申请日：2017-10-19
发明人： Baiman Chen , Guanfeng Qin , Yongjun Xu , Minlin Yang
摘要： Disclosed is a method of adaptively adjusting lift and drag on an airfoil-shaped sail. The method includes: (1) mounting at least one airfoil-shaped sail body having an airfoil-shaped cross section; (2) defining a Y-shaped air jet channel in the airfoil-shaped sail body; (3) arranging a flow regulating gate in the Y-shaped air jet channel; (4) adjusting the flow regulating gate to automatically adjust the gate opening extent and the cross section opening or closing extent in response to an oncoming flow with a varying direction and speed, to regulate the airflow within the air jet channel and accordingly change the angle of attack, so that the lift and drag on the sail body can be automatically adjusted as the wind speed changes. Further disclosed are an airfoil-shaped sail implementing the above method as well as a vertical-axis wind turbine employing the airfoil-shaped sail.
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2.发明申请公开(公告)号：US20180142100A1
公开(公告)日：2018-05-24
申请号：US15648136
申请日：2017-07-12
发明人： Yongjun Xu , Zhuodi Cai , Qiwen Cai , Huibin Yin
CPC分类号： C08L93/04 , B29C39/003 , B29C39/38 , B29K2091/00 , C08L91/06
摘要： Disclosed are a precision casting wax based on graphite oxide modified rosin and its production method. The precision casting wax is composed of 20%˜30% of modified rosin, 50%˜65% of paraffin, 5%˜10% of an adhesion agent, 5%˜40% of PE wax, and 0%˜3% of montan wax (in mass percentage), and the total content adds up to 100%. The modified rosin is composed of first-grade rosin, graphite oxide, zinc oxide and pentaerythritol. The graphite oxide, zinc oxide, and pentaerythritol have a mass equal to 5%˜8%, 0.3%˜0.5%, and 5%˜8% of the mass of the first-grade rosin respectively. The modified rosin has a softening point of 98° C.˜103° C. and an acidity value of 15 KOH/g˜25 KOH/g. The present invention has the features of small needle penetration, small linear shrinkage rate, large bending strength, and small ash content, and thus can satisfy the requirements of high size precision and high surface quality of the precision casting.
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公开(公告)号：US10315977B1
公开(公告)日：2019-06-11
申请号：US16203479
申请日：2018-11-28
发明人： Shimin Kang , Hang Zhang , Jietai Li , Zhilin Li , Yongjun Xu , Chenghua Sun , Nanlong Hong
IPC分类号： C07C51/00 , C07C53/00 , C07C51/377 , C08G63/06 , C07C53/124
摘要： The present invention relates to a method of preparing n-butyric acid by using poly-3-hydroxybutyrate. The method comprises following steps: placing poly-3-hydroxybutyrate in a closure means, passing hydrogen into the closure means to eliminate air after making an initial hydrogen pressure be 2 to 6 MPa, carrying out an agitation at 190 to 240° C. for reaction for 6 to 36 hours to obtain n-butyric acid. The preparation method provided by the present invention does not require a catalyst or a reaction solvent, and converts poly-3-hydroxybutyrate into n-butyric acid by a one-step reaction under a hydrogen atmosphere. The conversion rate of poly-3-hydroxybutyrate is 100%, the yield of n-butyric acid reaches up to 97%, the purity of n-butyric acid in all obtained liquid products reaches up to 98%, and no additional subsequent separation process is needed to the target product n-butyric acid.
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4.发明申请公开(公告)号：US20190078553A1
公开(公告)日：2019-03-14
申请号：US15788783
申请日：2017-10-19
发明人： Baiman Chen , Guanfeng Qin , Yongjun Xu , Minlin Yang
CPC分类号： F03D3/062 , F03D3/005 , F03D7/06 , F05B2240/217 , F05B2240/301 , F05B2240/302 , F05B2250/70 , F05B2260/502 , F05B2260/71 , Y02E10/74
摘要： Disclosed is a method of adaptively adjusting lift and drag on an airfoil-shaped sail. The method includes: (1) mounting at least one airfoil-shaped sail body having an airfoil-shaped cross section; (2) defining a Y-shaped air jet channel in the airfoil-shaped sail body; (3) arranging a flow regulating gate in the Y-shaped air jet channel; (4) adjusting the flow regulating gate to automatically adjust the gate opening extent and the cross section opening or closing extent in response to an oncoming flow with a varying direction and speed, to regulate the airflow within the air jet channel and accordingly change the angle of attack, so that the lift and drag on the sail body can be automatically adjusted as the wind speed changes. Further disclosed are an airfoil-shaped sail implementing the above method as well as a vertical-axis wind turbine employing the airfoil-shaped sail.
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公开(公告)号：US11339556B2
公开(公告)日：2022-05-24
申请号：US16489224
申请日：2017-11-23
发明人： Xiaojuan Guo , Yongjun Xu
摘要： A device for obtaining water from air on an island includes: a concentrated solution air water obtaining system, a solar collector, a dilute solution dehydration system, a heat pump system, a solution heating system, and a water purification system. Humid air is introduced into the concentrated solution air water obtaining system, which performs a heat and mass transfer into a dilute solution and relatively low-temperature dry air. This air is used as interior fresh air. The diluted solution is heated by the solar collector, delivered to the dilute solution dehydration system, and sent to the solution heating system for heating and evaporating into water vapor. The water purification system cools, purifies, filters and stores the water vapor. At the same time, the heat pump system introduces heated humid air into the dilute solution dehydration system to recover heat contained in the heated humid air, and to extract water.
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