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    PETROLEUM DRILL-STRING SHOCK ABSORBERS
    1.
    发明公开
    PETROLEUM DRILL-STRING SHOCK ABSORBERS 审中-公开

    公开(公告)号：US20230304361A1

    公开(公告)日：2023-09-28

    申请号：US17700555

    申请日：2022-03-22

    Applicant: University of Science and Technology Beijing ,  Shunde Graduate School, University of Science and Technology Beijing

    Inventor： Haiping LIU ,  Qi LV ,  Dashan SHEN ,  Donghang HAN ,  Dongmei ZHU

    IPC: E21B17/07

    CPC classification number: E21B17/076

    Abstract: A petroleum drill-string shock absorber includes a drill collar nipple, a driving unit, an outer shell, a helical guideway, a drill bit base, a woven metal ring and a vibration-absorbing composite beam, the vibration-absorbing composite beam consists of a sheet metal and a flexible material gasket bonded by an adhesive; the drill collar nipple is connected with the helical guideway; the helical guideway is connected with the drill bit base; the driving unit rotates on the helical guideway; the outer shell is connected with the drill bit base; a metal seal ring is configured to seal a space formed between the outer shell and the drill collar nipple, a sealed space is formed among the drill collar nipple, the outer shell and the drill bit base; the woven metal ring is placed between the helical guideway and the drill bit base configured to absorb an axial impact vibration.

    Petroleum drill-string shock absorbers
    2.
    发明授权
    Petroleum drill-string shock absorbers 有权

    公开(公告)号：US12139974B2

    公开(公告)日：2024-11-12

    申请号：US17700555

    申请日：2022-03-22

    Applicant: University of Science and Technology Beijing ,  Shunde Graduate School, University of Science and Technology Beijing

    Inventor： Haiping Liu ,  Qi Lv ,  Dashan Shen ,  Donghang Han ,  Dongmei Zhu

    IPC: E21B17/07

    Abstract: A petroleum drill-string shock absorber includes a drill collar nipple, a driving unit, an outer shell, a helical guideway, a drill bit base, a woven metal ring and a vibration-absorbing composite beam, the vibration-absorbing composite beam consists of a sheet metal and a flexible material gasket bonded by an adhesive; the drill collar nipple is connected with the helical guideway; the helical guideway is connected with the drill bit base; the driving unit rotates on the helical guideway; the outer shell is connected with the drill bit base; a metal seal ring is configured to seal a space formed between the outer shell and the drill collar nipple, a sealed space is formed among the drill collar nipple, the outer shell and the drill bit base; the woven metal ring is placed between the helical guideway and the drill bit base configured to absorb an axial impact vibration.

    High-strength and high-plasticity titanium matrix composite and preparation method thereof
    5.
    发明授权
    High-strength and high-plasticity titanium matrix composite and preparation method thereof 有权

    公开(公告)号：US12226826B2

    公开(公告)日：2025-02-18

    申请号：US17768737

    申请日：2020-08-17

    Applicant: University of Science and Technology Beijing

    Inventor： Xin Lu ,  Yu Pan ,  Yucheng Yang ,  Jiazhen Zhang ,  Wei Xu ,  Bowen Liu ,  Ce Zhang ,  Jianzhuo Sun ,  Yanjun Liu ,  Xuanhui Qu

    IPC: B22F3/10 ,  B22F1/05 ,  B22F1/12 ,  B22F9/04

    Abstract: The present invention provides a high-strength and high-plasticity titanium matrix composite and a preparation method thereof. The preparation method includes: preparing high-oxygen hydride-dehydride titanium powder using a high-temperature rotary ball grinding treatment process, in which the prepared hydride-dehydride titanium powder has a particle size of 10-40 μm, and has an oxygen content of 0.8-1.5 wt. %; preparing high-purity ultra-fine oxygen adsorbent powder using a wet grinding method of high-energy vibration ball grinding treatment process; in which a purity of the oxygen adsorbent powder is ≥99.9%, and a particle size of the oxygen adsorbent powder is ≤8 μm; mixing the high-oxygen hydride-dehydride titanium powder with the oxygen adsorbent powder in a protective atmosphere, and then press-forming the powder obtained after mixing to obtain a raw material blank; and performing atmosphere protective sintering treatment on the raw material blank to obtain a titanium matrix composite. The method prepares a titanium matrix composite reinforced by in-situ self-generating multi-scale Ca—Ti—O, TiC, TiB particles. The microstructure and grains are effectively refined, and the strength and plasticity of the material are significantly improved.

    Method and device for controlling temperature of molten steel during ladle furnace (LF) refining based on interpretable machine learning
    8.
    发明授权
    Method and device for controlling temperature of molten steel during ladle furnace (LF) refining based on interpretable machine learning 有权

    公开(公告)号：US12146200B1

    公开(公告)日：2024-11-19

    申请号：US18655340

    申请日：2024-05-06

    Applicant: University of Science and Technology Beijing

    Inventor： Qing Liu ,  Zicheng Xin ,  Jiangshan Zhang

    IPC: C21C5/30 ,  C21C7/00

    Abstract: A method for controlling a temperature of a molten steel during ladle furnace (LF) refining based on interpretable machine learning includes: acquiring process data of the LF refining and a target temperature of the molten steel during the LF refining; acquiring a prediction model for the temperature of the molten steel during the LF refining; calculating a base value for prediction of the temperature of the molten steel, SHapley Additive explanations (SHAP) values of key factor parameters, and a relationship trend between the key factor parameters and the SHAP values; and calculating a predicted value of the temperature of the molten steel during the LF refining, and acquiring a control result for the temperature of the molten steel during the LF refining according to the relationship trend and the predicted value of the temperature of the molten steel during the LF refining.

    SYSTEM FOR GRADUALLY PULVERIZING AND DRYING WATER-CONTAINING MATERIALS
    10.
    发明公开
    SYSTEM FOR GRADUALLY PULVERIZING AND DRYING WATER-CONTAINING MATERIALS 审中-公开

    公开(公告)号：US20240286143A1

    公开(公告)日：2024-08-29

    申请号：US18581675

    申请日：2024-02-20

    Applicant: University of Science and Technology Beijing ,  Suzhou Weihang Environmental Technology Co., LTD.

    Inventor： Chen HONG ,  Yanxiao SI ,  Jirong LI ,  Yang WANG

    IPC: B02C23/16 ,  B02C18/16

    CPC classification number: B02C23/16 ,  B02C18/16

    Abstract: Solid-liquid separation equipment includes a pulverizing and drying device. The pulverizing and drying device includes a pulverizing device and a drying device connected with one another. The pulverizing device has a pulverizing shell, an inlet, a main shaft and impellers, and the main shaft and the impellers are arranged in the pulverizing shell. The impellers are configured to rotate around the main shaft. The inlet forms a sidewall of the pulverizing shell and is intersected with the main shaft or an extension line of the main shaft. A gap is defined between an outer peripheral end of the impeller and the wall of the pulverizing shell. The sludge is efficiently and deeply dried in a condition with no phase change. The sludge is graded, pulverized and dried. During the pulverizing and drying process, the water is liquefied and centrifugally separated, and the water is not completely phase-transformed and removed.

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