6results about How to "Guaranteed detection stability" patented technology

A spraying device for penetrant testing of rods includes a housing, a placement rack inside the housing, a storage slot on the placement rack, rubber wheels inside the storage slot, a cover plate on the storage slot, an electric push rod on the placement rack, a transverse frame on the housing, a moving slot on the transverse frame, a support frame inside the moving slot, a limit slot on the support frame, a spray can on the limit slot, and a drain port on the housing. The device uses rubber wheels to drive the rotation of the rods and the two-dimensional movement of the spray can, replacing manual rotation of the rods, reducing manual intervention and labor intensity, and is suitable for batch testing. The uniform rotation of the rods and the lateral and longitudinal movement of the spray can ensure that every part of the surface is covered with penetrant, avoiding the omissions of traditional manual spraying and improving the accuracy of the test results. The electric push rod can adjust the position of the placement rack to accommodate rods of different sizes.

A kind of identification calibration method and system suitable for medium voltage distribution network fault travelling wave, for the problems that existing technology is difficult to adapt to complex and varied wave front shape, calibration precision and robustness is insufficient, the present application first adopts medium voltage distribution network travelling wave signal and pre-processes, constructs five types of wave front shape vectors;Then design multi-dimensional classification criterion to divide wave front into five categories, realize online calibration of classification threshold value through threshold value dynamic updating mechanism;Finally, for different types of wave front, corresponding adaptive calibration method is used to complete accurate calibration.The present application can effectively solve the problems of wave front calibration lag, reflection wave misselection, strong noise interference and other problems, adapt to complex working conditions of medium voltage distribution network, and have excellent engineering landing performance.

This application relates to the field of power equipment testing technology, and in particular to a method and apparatus for detecting the amount of dissolved gas degassing in oil. The method includes: acquiring oil sample information and operating condition information of the corresponding expandable gas collector; determining the pressure change data of the expandable gas collector based on the oil sample information and operating condition information; and calculating the total amount of dissolved gas degassing in the oil sample based on the pressure change data and a preset mapping relationship. This solves the problems of gas chromatography, which is cumbersome to operate, requires highly skilled personnel, has high instrument and consumable costs, and is time-consuming, making real-time monitoring impossible; and vacuum degassing, which requires strict vacuum levels, has high equipment purchase and maintenance costs, poor degassing effect stability, difficulty in guaranteeing detection accuracy, and is prone to oil sample contamination and complex operation.

The utility model discloses a kind of mould processing surface quality detection devices, belong to mould detection technical field.It is equipped with detection table, the side surface of detection table is equipped with vertical rod, vertical rod is supported with drive table, the bottom surface of drive table has cavity, first driving part and second driving part are equipped in cavity, the bottom surface of drive table is equipped with protective box, first driving part drives protective box transverse movement, second driving part drives protective box longitudinal movement, the bottom surface of protective box is equipped with mounting groove, detection probe is embedded in mounting groove, the top surface of detection table has cavity, the inside of cavity is slidably equipped with placing plate, the inside of detection table is equipped with third driving part, third driving part drives placing plate vertical movement;The technical scheme of the present application can change the position of detection probe in horizontal plane and the height of the mold to be detected by the cooperation of the first driving part, the second driving part and the third driving part, so as to obtain clear and comprehensive image information of the mold to be detected, and further ensure the accuracy of the mold detection result.

The utility model relates to a kind of power plant condensate regeneration resin conveying automatic identification device, and four sides of the fixed module setting is set on conveying pipeline, comprising: light source, resin conveying window, receiving device and acquisition module;Light source is set at the side of resin conveying window, for sending the transmission light of specific wavelength to resin conveying window;Receiving device is set at the other side of resin conveying window opposite with the side of light source setting, for receiving the optical signal formed after transmission light and resin interact after passing through resin conveying window, and optical signal is converted into electric signal after processing to optical signal;Acquisition module includes analog-digital conversion unit and signal transmission unit, and analog-digital conversion unit is used to collect current signal and is converted into digital signal;Signal transmission unit is used to transmit digital signal to digital signal analysis circuit;Four fixed modules are set around resin conveying window and install equidistantly with the four sides of resin conveying window. Corresponding system is also disclosed.

This invention discloses an automatic detection and sorting process for ball track dimensional defects within a ball cage shell, relating to the field of ball track dimensional defect detection. The process includes: acquiring an original contour point cloud dataset; obtaining a robust ball track contour dataset using random sampling circular arc fitting; establishing a spatial radial dimension compensation model to obtain the radial dimension correction value at the bottom of the ball track and the corrected ball track contour coordinates; obtaining the compensation value for the ball track arc radius based on a least-squares circle fitting algorithm; calculating the angular deviation and straightness error of each ball track to generate a multi-dimensional dimensional defect feature vector; and sorting the workpieces into qualified, reworkable, or scrap bins using a pneumatic sorting mechanism based on the comparison results. The advantages of this invention are: by combining anomaly point suppression and clamping posture calibration compensation, the influence of surface interference and clamping errors on measurement accuracy is eliminated, achieving high-precision automatic detection and reliable grading and sorting of ball track dimensions within the ball cage shell.