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公开(公告)号：US20220099496A1
公开(公告)日：2022-03-31
申请号：US17387527
申请日：2021-07-28
Inventor： Chao Wang , Jing Jiang , Yi Niu , Anmei Qiu , Zezhan Zhang , Peifeng Yu , Guiyun Tian , Shan Gao
Abstract: A four-shaft panoramic scanning temperature measuring device with a circulating water-cooling device is provided, which not only improves the working reliability of the probe, but also increases the overall flexibility and scanning measurement efficiency. The circulating water-cooling device is self-cooled. Compared with the conventional single-circulation water-cooling way, the design of five cooling cavities can achieve higher circulating water-cooling efficiency. The four-shaft structure includes a shaft structure for translation, a shaft structure for rotation, a shaft structure for swinging, and a shaft structure with coaxial sight pipe and light pipe. The design of the four-shaft structure is able to panoramically scan the high-temperature components inside the turbine. The temperature measuring device integrates functions of cooling, swinging, translating and rotating together, which solves problems of large size and complex control of the conventional temperature measuring device.
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Patent Agency Ranking
公开(公告)号：US10229486B2
公开(公告)日：2019-03-12
申请号：US15608320
申请日：2017-05-30
Inventor： Bin Gao , Xiaoqing Li , Guiyun Tian
Abstract: A method automatically separates out the defect image from a thermogram sequence based on the physical characteristics of the defect of a conductive material in electromagnetic field. Defect area radiates more heat than other area, when it is mapped to the histogram of the image to be separated, the defect area is located in the top-end of histogram, and the proportion of defect area is smaller to the background or other area. The method equally divides the histogram of the image to be separated into multi groups, and calculates the first derivative ki of total pixel number Si of group i, finds the maximum absolute value of ki, i.e. |ki|max, where i is expressed as imax; if imax is the last group, Wn is regarded as threshold T, otherwise, Wimax+1 is selected as threshold T. The pixels that less than threshold T are removed to obtain the defect image in ECPT.
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公开(公告)号：US11808632B2
公开(公告)日：2023-11-07
申请号：US17387527
申请日：2021-07-28
Inventor： Chao Wang , Jing Jiang , Yi Niu , Anmei Qiu , Zezhan Zhang , Peifeng Yu , Guiyun Tian , Shan Gao
CPC classification number: G01J5/0088 , G01J5/048 , F05D2260/232
Abstract: A four-shaft panoramic scanning temperature measuring device with a circulating water-cooling device is provided, which not only improves the working reliability of the probe, but also increases the overall flexibility and scanning measurement efficiency. The circulating water-cooling device is self-cooled. Compared with the conventional single-circulation water-cooling way, the design of five cooling cavities can achieve higher circulating water-cooling efficiency. The four-shaft structure includes a shaft structure for translation, a shaft structure for rotation, a shaft structure for swinging, and a shaft structure with coaxial sight pipe and light pipe. The design of the four-shaft structure is able to panoramically scan the high-temperature components inside the turbine. The temperature measuring device integrates functions of cooling, swinging, translating and rotating together, which solves problems of large size and complex control of the conventional temperature measuring device.
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公开(公告)号：US11680851B2
公开(公告)日：2023-06-20
申请号：US17326313
申请日：2021-05-20
Inventor： Chao Wang , Jing Jiang , Anmei Qiu , Yekui Zhong , Yi Niu , Peifeng Yu , Zezhan Zhang , Ying Duan , Xueke Gou , Guiyun Tian
CPC classification number: G01J5/0088 , G01J5/04 , G01J5/0806 , G01J5/10 , G01M15/02 , G01M15/14 , G01J5/485 , G01J2005/106
Abstract: A device for measuring surface temperature of a turbine blade based on a rotatable prism includes a probe, a prism rotating apparatus and an optical focusing apparatus. The prism rotating apparatus and the optical focusing apparatus are located inside the probe. The probe includes a probe outer casing, a probe inner casing, a water-cooled casing pipe, a sapphire window piece, a quartz prism, a light pipe, a collimating lens, a focusing lens and an infrared array detector. The prism rotating apparatus includes a rotary motor, a worm, a gear and a prism rotary table, the rotary motor rotates to drive the prism rotary table to rotate. The optical focusing apparatus includes a telescopic motor, a coupler, a lead screw and a drive rod, the telescopic motor rotates to drive the lead screw, so as to further drive the drive rod to move along the slot.
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5.发明授权公开(公告)号：US11366152B2
公开(公告)日：2022-06-21
申请号：US16666428
申请日：2019-10-29
Inventor： Dong Liu , Yan Yan , Xiaoting Xiao , Bin Gao , Guiyun Tian
Abstract: A method for measuring equivalent circuit parameters and resonant frequency of a piezoelectric resonator, by which the phase-frequency curve of the piezoelectric resonator is measured, and the resonant frequency and the anti-resonant frequency are obtained. Then, the slopes of the phase-frequency curve at the resonant frequency and the anti-resonant frequency are respectively measured. The resonant angular frequency and the anti-resonant angular frequency are also calculated. Finally, the equivalent circuit parameters of the piezoelectric resonator are obtained by solving a system of nonlinear equations.
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公开(公告)号：US20210270674A1
公开(公告)日：2021-09-02
申请号：US17326313
申请日：2021-05-20
Inventor： Chao Wang , Jing Jiang , Anmei Qiu , Yekui Zhong , Yi Niu , Peifeng Yu , Zezhan Zhang , Ying Duan , Xueke Gou , Guiyun Tian
Abstract: A device for measuring surface temperature of a turbine blade based on a rotatable prism includes a probe, a prism rotating apparatus and an optical focusing apparatus. The prism rotating apparatus and the optical focusing apparatus are located inside the probe. The probe includes a probe outer casing, a probe inner casing, a water-cooled casing pipe, a sapphire window piece, a quartz prism, a light pipe, a collimating lens, a focusing lens and an infrared array detector. The prism rotating apparatus includes a rotary motor, a worm, a gear and a prism rotary table, the rotary motor rotates to drive the prism rotary table to rotate. The optical focusing apparatus includes a telescopic motor, a coupler, a lead screw and a drive rod, the telescopic motor rotates to drive the lead screw, so as to further drive the drive rod to move along the slot.
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