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1.发明公开公开(公告)号：US20240230762A1
公开(公告)日：2024-07-11
申请号：US18409342
申请日：2024-01-10
Inventor： Gongtian SHEN , Zunxiang WANG , Ran LIU , Zhao ZHAO , Zhimao XU , Wei ZHAO
IPC: G01R31/327 , G01J5/00
CPC classification number: G01R31/3278 , G01J5/00 , G01J2005/0077
Abstract: The present disclosure provides a system and method for testing performance of a relay contact based on infrared thermal imaging, and relates to the field of performance testing of relay contacts. The system includes a collection device, a testing device, and a time relay. The testing device is separately connected to a tested relay and the time relay, and configured to control closing and release of a contact of the tested relay by using the time relay. The collection device is connected to the testing device, and configured to collect a temperature, a closing quantity, and working duration of the contact of the tested relay. The present disclosure resolves a limitation in existing performance testing methods for intermediate relays, which predominantly concentrate on individual parameters like voltage, current, and time, while overlooking the assessment of contact performance.
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公开(公告)号：US20240167982A1
公开(公告)日：2024-05-23
申请号：US18474985
申请日：2023-09-26
Inventor： Junjiao ZHANG , Yongna SHEN , Gongtian SHEN , Zhiquan WANG , Daqing CHEN
Abstract: An apparatus and method for testing sensitivity consistency of an acoustic emission sensor are provided. The apparatus uses a cylindrical polymethyl methacrylate (PMMA) rod as a test bench. A clamping seat, a clamping block, and a mounting cylinder are mounted on one end of the test bench in cooperation. Under an action of a pressure spring, an end face of a tested sensor keeps pressure-stable coupling contact with an end face of the test bench. A bracket is mounted on another end face of the test bench, and keeps, together with a fixing seat and the clamping seat, the test bench horizontally placed on a desktop. By adjusting a width and an amplitude of a pulse excitation signal of a signal generator, and according to sensitivity distribution and aggregation between tested sensors, a consistency calculation method is used to screen out tested sensors with first, second, and third sensitivity consistency.
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公开(公告)号：US20230251229A1
公开(公告)日：2023-08-10
申请号：US18095379
申请日：2023-01-10
Inventor： Gongtian SHEN , Qingli QI , Yang ZHENG , Yilin YUAN , Qingchuan PAN , Zongjian ZHANG
CPC classification number: G01N29/2412 , G01N29/04 , C23C4/123 , G01N2291/023 , G01N2291/0289
Abstract: The present disclosure provides a magnetostrictive guided wave sensor and a method for preparing magnetostrictive coating, relating to the field of magnetic functional materials and preparations thereof. The method includes: pretreating a surface of a test piece; and spraying magnetostrictive alloy powder on the pretreated surface of the test piece to form a magnetostrictive coating attached to the pretreated surface. In the magnetostrictive guided wave sensor and the method for preparing magnetostrictive coating according to the embodiments of the present disclosure, by spraying the magnetostrictive coating on the test piece, no coupling agent is required between the probe of the magnetostrictive coating sensor and the test piece, and the magnetostrictive coating can be formed on test pieces of any shape. In addition, the coating has a high bonding strength with the test piece, and has good tissue characteristics and magnetostrictive performance.
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4.发明授权公开(公告)号：US11674926B2
公开(公告)日：2023-06-13
申请号：US17333148
申请日：2021-05-28
Inventor： Gongtian Shen , Yongna Shen , Wenjun Zhang
CPC classification number: G01N27/725 , G01B7/24
Abstract: A magneto acoustic emission detection method for fatigue damage of ferromagnetic metal components: First, generating an excitation magnetic field by using a sine wave voltage signal, gradually increasing a loading voltage until a magneto acoustic emission signal of a bimodal envelope with an obvious tail peak is acquired, and taking a corresponding voltage peak value as a reference voltage; second, generating an excitation magnetic field by using a square wave voltage signal equal to or higher than a reference voltage, and acquiring a magneto acoustic emission signal with a T-shaped envelope; and third, calculating the average value of peak-to-peak values of the magneto acoustic emission signal in multiple periods to serve as a characteristic parameter, and enabling the characteristic parameter to have inflection point change along with the development of the initiation and expansion of the fatigue crack, and giving a timely early warning for the failure of the component.
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公开(公告)号：US20240219352A1
公开(公告)日：2024-07-04
申请号：US18202385
申请日：2023-05-26
Inventor： Gongtian Shen , Yongna Shen , Junjiao Zhang , Pengcheng Gan , Bin Hu , Baoxuan Wang
IPC: G01N29/22 , G01N29/265
CPC classification number: G01N29/225 , G01N29/265 , G01N2291/015 , G01N2291/023 , G01N2291/0289 , G01N2291/103
Abstract: An acoustic emission internal testing method and device for detecting corrosion of a large liquid-carrying storage tank bottom plate. An acoustic emission sensor is configured to collect an acoustic emission signal generated by an underwater acoustic transducer, and to calculate an attenuation coefficient of the acoustic emission signal when propagated by the underwater acoustic transducer through a medium, thereby determining a step distance of the storage tank robot. After the storage tank robot travels every step distance on a storage tank bottom plate, the acoustic emission sensor collects an acoustic emission signal generated by the storage tank bottom plate. Finally, the position where the storage tank bottom plate is corroded and the corrosion degree are determined according to intensity characteristic parameters and activity characteristic parameters of the acoustic emission signal collected after the storage tank robot travels every step distance.
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Patent Agency Ranking
公开(公告)号：US11421986B2
公开(公告)日：2022-08-23
申请号：US16478858
申请日：2017-03-06
Applicant: China Special Equipment Inspection Group Co., Ltd. , CHINA SPECIAL EQUIPMENT INSPECTION AND RESEARCH INSTITUTE
Inventor： Gongtian Shen , Yang Zheng , Zongjian Zhang , Jidong Tan , Sujun Li
Abstract: The disclosure discloses a method, apparatus and system for detecting multi-mode electromagnetic acoustic and magnetic flux leakage and a sensor. The method comprises: S102, receiving an operation instruction for detecting an object to be detected, the operation instruction is used for controlling a detection sensor to enter into any one or more of working modes as follows: magnetic flux leakage detection, ultrasonic bulk wave detection, ultrasonic guided wave detection and surface wave detection; S104, controlling the detection sensor to output a corresponding detection signal according to the operation instruction; and S106, detecting the object to be detected on the basis of the detection signal. The technical solution achieves a purpose of using one sensor to realize various detection modes, such as magnetic flux leakage and electromagnetic acoustic modes, reduces complexity and cost of a detection system, and improves detection efficiency.
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公开(公告)号：US10962504B2
公开(公告)日：2021-03-30
申请号：US15829586
申请日：2017-12-01
Applicant: Hubei University of Technology , Tsinghua University , China Special Equipment Inspection and Research Institute , Eddysun (Xiamen) Electronic Co., Ltd. , Huazhong University of Science and Technology
Inventor： Songling Huang , Xiaochun Song , Gongtian Shen , Wei Zhao , Junming Lin , Yihua Kang , Yu Zhang , Shen Wang
Abstract: Disclosed are a method and device for compressing and reconstructing data. The method includes: disposing a transmitting EMAT array and a receiving EMAT array; exciting a Lamb wave, receiving the Lamb wave, subjecting the Lamb wave to narrowband filtering with the narrowband frequency, to form detecting data x(n); analysing the detecting data with a DFT; reconstructing original detecting data and calculating a reconstruction error according to the measurement vector and the recovery matrix by using a TLBO algorithm; optimizing measurement vector and recovery matrix; transmitting the measurement vector to a supervisory device.
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公开(公告)号：US20210033276A1
公开(公告)日：2021-02-04
申请号：US16844397
申请日：2020-04-09
Inventor： Guoli Qi , Songsong Zhang
Abstract: A system is disclosed. The system includes a boiler setting system, a heating system, a burner, an inner layer temperature measurement system and an outer wall temperature measurement system, where the boiler setting system includes four vertically arranged, interconnected bottom supported heavy walls and/or sectional supporting water cooled walls; the bottom supported heavy wall includes a refractory brick layer, a first insulation layer and a machine-made red brick layer in order from the inside to the outside; the sectional supporting water cooled wall includes a second insulation layer, an air interlayer and a steel plate in order from the inside to the outside; the heating system includes a membrane wall and a smooth tube; the membrane wall is fixed inside the bottom supported heavy wall; the smooth tube is fixed inside the sectional supporting water cooled wall; the burner is fixed on the inside bottom of the boiler setting system.
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公开(公告)号：US20240337553A1
公开(公告)日：2024-10-10
申请号：US18401535
申请日：2023-12-31
Inventor： Yongna SHEN , Gongtian SHEN , Bin HU , Junjiao ZHANG , Yufeng OUYANG , Mengjun LI
CPC classification number: G01M3/24 , F17C13/02 , F17C13/126 , F17C2221/033 , F17C2250/0465 , F17C2250/0486 , F17C2260/044
Abstract: Disclosed is a method for detecting leakage of a full-capacity liquefied natural gas (LNG) storage tank by acoustic emission. The method includes: detecting an amplitude of system noise by an acoustic sensor, and determining a signal acquisition threshold; acquiring an amplitude of ambient noise; acquiring an amplitude of the acoustic signal excited by the analog sound source at the distance of 0.1 m from the acoustic sensor and an amplitude of the acoustic signal excited by the analog sound source at the distance of x m from the acoustic sensor, and calculating, an attenuation coefficient of an acoustic signal passing through the outer wall of the storage tank; determining a maximum detection range of the acoustic sensor; and continuously moving the acoustic sensor on the outer wall of the storage tank in a step smaller than the maximum detection range, to perform an LNG leakage detection.
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10.发明公开公开(公告)号：US20230334191A1
公开(公告)日：2023-10-19
申请号：US18134746
申请日：2023-04-14
Inventor： Guodong ZHU
IPC: G06F30/17
CPC classification number: G06F30/17 , G06F2111/10
Abstract: The present disclosure discloses a safety evaluation method and system for a straight-section external guide cylinder, and a correction method and system for a heat exchanger. The safety evaluation method includes: determining a radial displacement formula and a rotation angle formula of the guide cylinder based on symmetrical structural characteristics and real load conditions of the straight-section external guide cylinder, then constructing seven-order matrix equations and solving the equation, then obtaining a stress of each element in the guide cylinder, performing strength evaluation on a bending stress and a membrane stress of each element, and determining a final wall thickness of each element; calculating axial stiffness of the guide cylinder, and performing calculation and correction on a heat exchanger system; obtaining an axial force of the guide cylinder, and further performing calculation and safety evaluation on the straight-section external guide cylinder under the axial force and an internal pressure load.
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